/* roulang page: index */
:root {
            --color-primary: #0F0F0F;
            --color-accent: #FF3B30;
            --color-bg: #FAFAF8;
            --color-white: #FFFFFF;
            --color-border: #E8E6E1;
            --color-muted: #6B6B6B;
            --color-light: #9B9B96;
            --color-footer-text: #D9D9D4;
            --color-success: #1F8A5B;
            --color-warning: #E07B39;
            --color-bg-soft: #F7F6F3;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
            --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
            --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
            --transition-fast: 180ms ease;
            --transition-base: 200ms ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --gap-section: 100px;
            --gap-card: 28px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover {
            color: var(--color-primary);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
            background: none;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4 {
            color: var(--color-primary);
            font-weight: 700;
            line-height: 1.25;
        }

        h1 {
            font-size: clamp(36px, 6vw, 64px);
            line-height: 1.15;
            letter-spacing: -0.01em;
        }

        h2 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: clamp(18px, 2.5vw, 22px);
            font-weight: 600;
            line-height: 1.35;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .section-title {
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .btn-primary:hover {
            background: #232323;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #000000;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(15, 15, 15, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
            background: rgba(15, 15, 15, 0.14);
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }

        .btn-accent:hover {
            background: #e02e25;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
        }

        .btn:focus-visible {
            box-shadow: var(--shadow-focus);
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn:disabled {
            background: var(--color-border);
            color: var(--color-light);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        /* Header / Nav */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            background: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: var(--color-white);
            font-size: 14px;
            font-weight: 700;
            line-height: 1;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition-base);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--color-primary);
        }

        .nav-link:hover::after,
        .nav-link.active::after {
            width: 100%;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
            background: var(--color-primary);
            color: var(--color-white);
        }

        .nav-cta .btn:hover {
            background: var(--color-accent);
        }

        /* Mobile nav */
        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            width: 44px;
            height: 44px;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
        }

        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .hamburger.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.open span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            position: fixed;
            top: 0;
            right: 0;
            bottom: 0;
            width: 70%;
            max-width: 360px;
            background: var(--color-white);
            z-index: 99;
            padding: 80px 24px 32px;
            box-shadow: -6px 0 24px rgba(15, 15, 15, 0.08);
            transform: translateX(100%);
            transition: transform 240ms ease;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu .mobile-nav-link {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-primary);
            border-bottom: 1px solid var(--color-border);
        }

        .mobile-menu .mobile-nav-link.active {
            color: var(--color-accent);
        }

        .mobile-menu .btn {
            width: 100%;
            margin-top: 20px;
        }

        /* Hero */
        .hero {
            min-height: 80vh;
            display: flex;
            align-items: center;
            position: relative;
            padding-top: 100px;
            padding-bottom: 60px;
            background: url('/assets/images/5c6ed0a7a4af8669.webp') center/cover no-repeat;
            background-color: var(--color-primary);
            color: var(--color-white);
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 15, 0.88) 0%, rgba(15, 15, 15, 0.55) 100%);
            z-index: 1;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            max-width: 780px;
        }

        .hero-tag {
            display: inline-block;
            background: var(--color-accent);
            color: var(--color-white);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.05em;
            margin-bottom: 18px;
        }

        .hero h1 {
            color: var(--color-white);
            font-size: clamp(36px, 6vw, 64px);
            font-weight: 700;
            line-height: 1.15;
            margin-bottom: 18px;
        }

        .hero p {
            font-size: 17px;
            line-height: 1.85;
            color: rgba(255, 255, 255, 0.88);
            max-width: 680px;
            margin-bottom: 28px;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 22px;
        }

        .hero-actions .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }

        .hero-actions .btn-accent:hover {
            background: #e02e25;
        }

        .hero-actions .btn-ghost {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: var(--color-white);
        }

        .hero-actions .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.8);
        }

        .hero-countdown {
            display: flex;
            align-items: center;
            gap: 12px;
            background: rgba(255, 255, 255, 0.10);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 12px 20px;
            max-width: 520px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.9);
        }

        .hero-countdown .count-label {
            font-weight: 600;
            color: var(--color-white);
            margin-right: 4px;
            white-space: nowrap;
        }

        .hero-countdown .count-time {
            display: flex;
            gap: 6px;
            align-items: center;
        }

        .hero-countdown .count-time span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.15);
            border-radius: 4px;
            padding: 2px 8px;
            font-weight: 700;
            font-size: 15px;
            color: var(--color-white);
            min-width: 34px;
        }

        /* Pain cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-card);
        }

        .card-grid.two-col {
            grid-template-columns: repeat(2, 1fr);
        }

        .card-grid.four-col {
            grid-template-columns: repeat(4, 1fr);
        }

        .pain-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .pain-card .pain-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            background: rgba(255, 59, 48, 0.08);
            color: var(--color-accent);
            font-size: 18px;
            margin-bottom: 14px;
        }

        .pain-card h3 {
            margin-bottom: 10px;
            font-size: 19px;
        }

        .pain-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-light);
        }

        /* Solution cards */
        .solution-card {
            background: var(--color-bg-soft);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .solution-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .solution-card .solution-num {
            display: inline-block;
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            background: var(--color-border);
            border-radius: var(--radius-sm);
            padding: 2px 8px;
            margin-bottom: 14px;
        }

        .solution-card h3 {
            margin-bottom: 10px;
        }

        .solution-card p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-card);
            counter-reset: step;
        }

        .step-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
            position: relative;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-white);
            font-weight: 700;
            font-size: 16px;
            margin-bottom: 16px;
        }

        .step-item h3 {
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* Data metrics */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .metric-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .metric-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .metric-value {
            font-size: clamp(32px, 4vw, 42px);
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 14px;
            color: var(--color-muted);
            font-weight: 500;
        }

        .metric-card.accent .metric-value {
            color: var(--color-accent);
        }

        .metric-card.success .metric-value {
            color: var(--color-success);
        }

        /* Testimonials */
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-card);
        }

        .testimonial-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .testimonial-quote {
            font-size: 15px;
            color: var(--color-primary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .testimonial-author {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-muted);
            margin-bottom: 4px;
        }

        .testimonial-result {
            font-size: 13px;
            color: var(--color-success);
            font-weight: 600;
        }

        /* Audience tags */
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 16px;
        }

        .audience-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .audience-item:hover {
            transform: translateY(-2px);
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .audience-item .audience-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .audience-item .audience-desc {
            font-size: 13px;
            color: var(--color-light);
            line-height: 1.6;
        }

        /* Scene cards */
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-card);
        }

        .scene-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .scene-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .scene-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-radius: 0;
        }

        .scene-card .scene-body {
            padding: 20px 22px;
        }

        .scene-card h3 {
            margin-bottom: 8px;
        }

        .scene-card p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* Tech points */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .tech-card {
            background: var(--color-bg-soft);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .tech-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-sm);
        }

        .tech-card h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .tech-card p {
            font-size: 13px;
            color: var(--color-muted);
            line-height: 1.7;
        }

        /* Macro metrics */
        .macro-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gap-card);
        }

        .macro-card {
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            text-align: left;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .macro-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(15, 15, 15, 0.25);
        }

        .macro-card .macro-value {
            font-size: clamp(30px, 4vw, 40px);
            font-weight: 700;
            color: var(--color-white);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .macro-card .macro-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Brand intro */
        .brand-section {
            background: var(--color-bg-soft);
        }

        .brand-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 36px;
        }

        .brand-card p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.9;
            margin-bottom: 14px;
        }

        .brand-card p:last-child {
            margin-bottom: 0;
        }

        /* Hot matches */
        .hot-matches-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gap-card);
        }

        .hot-match-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }

        .hot-match-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        .hot-match-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 14px;
            font-size: 13px;
            color: var(--color-light);
        }

        .hot-match-teams {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
        }

        .hot-match-teams .vs {
            color: var(--color-accent);
            font-weight: 600;
            flex-shrink: 0;
        }

        .hot-match-info {
            font-size: 14px;
            color: var(--color-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        /* News */
        .news-section {
            background: var(--color-bg-soft);
        }

        .news-list {
            background: var(--color-white);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            overflow: hidden;
        }

        .news-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            padding: 22px 24px;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-fast);
        }

        .news-item:last-child {
            border-bottom: none;
        }

        .news-item:hover {
            background: var(--color-bg-soft);
        }

        .news-date {
            font-size: 13px;
            color: var(--color-light);
            font-weight: 500;
            white-space: nowrap;
            min-width: 90px;
            padding-top: 4px;
        }

        .news-content {
            flex: 1;
        }

        .news-content h3 {
            font-size: 18px;
            margin-bottom: 6px;
        }

        .news-content p {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin-bottom: 10px;
        }

        .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .news-link:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }

        /* FAQ */
        .faq-list {
            max-width: 720px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: border-color var(--transition-base);
        }

        .faq-item.open {
            border-color: var(--color-primary);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            user-select: none;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 300;
            color: var(--color-primary);
            transition: transform var(--transition-base);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* CTA section */
        .cta-section {
            background: var(--color-primary);
            color: var(--color-white);
            padding: 80px 0;
            text-align: center;
        }

        .cta-section .section-title {
            color: var(--color-white);
            margin-bottom: 12px;
        }

        .cta-section .section-desc {
            color: rgba(255, 255, 255, 0.75);
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* Footer */
        .footer {
            background: var(--color-primary);
            color: var(--color-footer-text);
            padding: 60px 0 20px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: var(--color-white);
            margin-bottom: 12px;
        }

        .footer-brand .logo-mark {
            background: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 260px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
            text-decoration: underline;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
        }

        .footer-bottom-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
            text-decoration: underline;
        }

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 500ms ease, transform 500ms ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .card-grid,
            .steps-grid,
            .testimonials-grid,
            .scene-grid,
            .macro-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid,
            .tech-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hot-matches-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero {
                min-height: 60vh;
                padding-top: 80px;
            }
        }

        @media (max-width: 767px) {
            .section {
                padding: 56px 0;
            }
            .card-grid,
            .steps-grid,
            .testimonials-grid,
            .scene-grid,
            .metrics-grid,
            .tech-grid,
            .macro-grid {
                grid-template-columns: 1fr;
            }
            .hot-matches-grid {
                grid-template-columns: 1fr;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .header {
                height: 60px;
            }
            .hero {
                min-height: 520px;
                padding-top: 70px;
                padding-bottom: 40px;
            }
            .hero h1 {
                font-size: 32px;
            }
            .hero p {
                font-size: 16px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .hero-countdown {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .section-desc {
                font-size: 15px;
            }
            .news-item {
                flex-direction: column;
                gap: 8px;
                padding: 16px;
            }
            .news-date {
                min-width: auto;
                padding-top: 0;
            }
            .cta-section {
                padding: 60px 0;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 10px;
            }
            .container {
                padding: 0 16px;
            }
        }

        @media (max-width: 374px) {
            .hero h1 {
                font-size: 28px;
            }
            .btn {
                font-size: 14px;
                padding: 10px 18px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #0F0F0F;
            --color-accent: #FF3B30;
            --color-bg: #FAFAF8;
            --color-white: #FFFFFF;
            --color-border: #E8E6E1;
            --color-muted: #6B6B6B;
            --color-light: #9B9B96;
            --color-footer-text: #D9D9D4;
            --color-success: #1F8A5B;
            --color-warning: #E07B39;
            --color-bg-soft: #F7F6F3;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
            --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
            --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
            --transition-fast: 180ms ease;
            --transition-base: 200ms ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --gap-section: 80px;
            --gap-card: 28px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover {
            color: var(--color-primary);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
            background: none;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
            box-sizing: border-box;
        }

        .section {
            padding: 70px 0;
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 36px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .section-title {
            margin-bottom: 12px;
            color: var(--color-primary);
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary);
        }

        p {
            margin: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .btn-primary:hover {
            background: #232323;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #000000;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(15, 15, 15, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
            background: rgba(15, 15, 15, 0.14);
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }

        .btn-accent:hover {
            background: #e02e25;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
        }

        .btn:focus-visible {
            box-shadow: var(--shadow-focus);
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn:disabled {
            background: var(--color-border);
            color: var(--color-light);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        /* Header / Nav */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .logo:hover {
            color: var(--color-primary);
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-sm);
            font-size: 18px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            padding: 24px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition-fast);
        }

        .nav-link:hover {
            color: var(--color-primary);
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 16px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .hamburger:hover {
            background: rgba(15, 15, 15, 0.04);
        }

        .hamburger[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }

        .hamburger[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--color-white);
            z-index: 99;
            padding: 24px;
            box-sizing: border-box;
            overflow-y: auto;
            flex-direction: column;
            gap: 0;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            font-size: 16px;
            display: block;
        }

        .mobile-menu .nav-link.active::after {
            display: none;
        }

        .mobile-menu .mobile-cta {
            margin-top: 24px;
            width: 100%;
        }

        /* Category Hero */
        .category-hero {
            padding: 120px 0 56px;
            background: var(--color-bg-soft);
            border-bottom: 1px solid var(--color-border);
            min-height: 45vh;
            display: flex;
            align-items: center;
            box-sizing: border-box;
        }

        .category-hero-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            justify-content: space-between;
        }

        .category-hero-content {
            flex: 1;
            max-width: 620px;
        }

        .category-hero-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }

        .category-hero h1 {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin-bottom: 14px;
        }

        .category-hero-desc {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 560px;
        }

        .category-hero-image {
            flex-shrink: 0;
            width: 280px;
            height: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Breadcrumb */
        .breadcrumb-wrapper {
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border);
            background: var(--color-white);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-light);
        }

        .breadcrumb a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: var(--color-border);
            font-size: 12px;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Category Intro */
        .category-intro {
            padding: 36px 0;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
        }

        .category-intro-text {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.9;
            max-width: 820px;
        }

        /* Article List */
        .article-list-section {
            padding: 56px 0;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .article-card {
            display: flex;
            gap: 24px;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
            cursor: pointer;
            height: 200px;
            box-sizing: border-box;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .article-card-image {
            width: 40%;
            min-width: 260px;
            max-width: 340px;
            height: 100%;
            overflow: hidden;
            flex-shrink: 0;
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.03);
        }

        .article-card-body {
            flex: 1;
            padding: 20px 24px 20px 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
            min-width: 0;
            box-sizing: border-box;
        }

        .article-card-tag-row {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-category-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 3px 8px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
        }

        .article-date {
            font-size: 13px;
            color: var(--color-light);
            white-space: nowrap;
        }

        .article-card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--color-primary);
            transition: color var(--transition-fast);
            margin: 0;
        }

        .article-card:hover .article-card-title {
            color: var(--color-accent);
        }

        .article-card-summary {
            font-size: 14px;
            color: var(--color-light);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-read-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
            align-self: flex-start;
        }

        .article-read-more:hover {
            color: var(--color-accent);
        }

        .article-read-more .arrow {
            display: inline-block;
            transition: transform var(--transition-fast);
            font-size: 14px;
        }

        .article-read-more:hover .arrow {
            transform: translateX(4px);
        }

        /* Editor Picks */
        .editor-picks-section {
            padding: 56px 0;
            background: var(--color-bg-soft);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .editor-picks-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pick-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
            cursor: pointer;
        }

        .pick-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .pick-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 6px;
            transition: color var(--transition-fast);
        }

        .pick-card:hover .pick-card-title {
            color: var(--color-accent);
        }

        .pick-card-meta {
            font-size: 13px;
            color: var(--color-light);
        }

        /* Data Trend */
        .trend-section {
            padding: 56px 0;
        }

        .trend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .trend-item {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }

        .trend-value {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .trend-value .unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-muted);
            margin-left: 2px;
        }

        .trend-label {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.5;
        }

        /* CTA */
        .cta-section {
            padding: 56px 0 72px;
            background: var(--color-primary);
        }

        .cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-text {
            flex: 1;
            min-width: 280px;
        }

        .cta-title {
            font-size: 24px;
            font-weight: 700;
            color: var(--color-white);
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .cta-desc {
            font-size: 15px;
            color: var(--color-footer-text);
            line-height: 1.7;
            max-width: 460px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .cta-actions .btn-primary {
            background: var(--color-white);
            color: var(--color-primary);
        }

        .cta-actions .btn-primary:hover {
            background: var(--color-border);
            box-shadow: 0 6px 18px rgba(255, 255, 255, 0.2);
        }

        .cta-actions .btn-outline {
            border-color: var(--color-footer-text);
            color: var(--color-white);
        }

        .cta-actions .btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--color-white);
        }

        /* Footer */
        .footer {
            background: var(--color-primary);
            padding: 48px 0 24px;
            color: var(--color-footer-text);
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand .logo {
            color: var(--color-white);
            margin-bottom: 14px;
        }

        .footer-brand .logo:hover {
            color: var(--color-white);
        }

        .footer-brand .logo-mark {
            background: var(--color-white);
            color: var(--color-primary);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-footer-text);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-footer-text);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom-links a {
            color: var(--color-footer-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
        }

        /* Reveal animation */
        .reveal {
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 500ms ease, transform 500ms ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            .container {
                padding: 0 20px;
            }

            .section {
                padding: 56px 0;
            }

            .category-hero {
                padding: 104px 0 48px;
                min-height: auto;
            }

            .category-hero-image {
                width: 220px;
                height: 150px;
            }

            .article-card {
                height: 180px;
            }

            .article-card-image {
                min-width: 200px;
                max-width: 260px;
            }

            .trend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }

            .section {
                padding: 44px 0;
            }

            .nav-desktop {
                display: none;
            }

            .nav-cta {
                display: none;
            }

            .hamburger {
                display: flex;
            }

            .category-hero {
                padding: 96px 0 40px;
            }

            .category-hero-inner {
                flex-direction: column;
                gap: 20px;
                align-items: flex-start;
            }

            .category-hero-image {
                width: 100%;
                height: 160px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .article-card {
                flex-direction: column;
                height: auto;
                gap: 0;
            }

            .article-card-image {
                width: 100%;
                min-width: 100%;
                max-width: 100%;
                height: 160px;
            }

            .article-card-body {
                padding: 16px;
                gap: 6px;
            }

            .article-card-summary {
                -webkit-line-clamp: 2;
            }

            .editor-picks-grid {
                grid-template-columns: 1fr;
            }

            .trend-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }

            .trend-value {
                font-size: 26px;
            }

            .cta-inner {
                flex-direction: column;
                align-items: flex-start;
            }

            .cta-actions {
                width: 100%;
                flex-direction: column;
            }

            .cta-actions .btn {
                width: 100%;
            }

            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                justify-content: center;
            }
        }

        @media (max-width: 375px) {
            .trend-grid {
                grid-template-columns: 1fr;
            }

            .container {
                padding: 0 12px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            .article-card,
            .pick-card,
            .btn,
            .article-card-image img,
            .reveal {
                transition: none;
            }

            .reveal {
                opacity: 1;
                transform: none;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #0F0F0F;
            --color-accent: #FF3B30;
            --color-bg: #FAFAF8;
            --color-white: #FFFFFF;
            --color-border: #E8E6E1;
            --color-muted: #6B6B6B;
            --color-light: #9B9B96;
            --color-footer-text: #D9D9D4;
            --color-success: #1F8A5B;
            --color-warning: #E07B39;
            --color-bg-soft: #F7F6F3;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
            --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
            --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
            --transition-fast: 180ms ease;
            --transition-base: 200ms ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --gap-section: 80px;
            --gap-card: 28px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover {
            color: var(--color-primary);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
            background: none;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 70px 0;
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 36px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .section-title {
            margin-bottom: 12px;
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin-top: 0;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-head.center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
            min-height: 44px;
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .btn-primary:hover {
            background: #232323;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #000000;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(15, 15, 15, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
            background: rgba(15, 15, 15, 0.14);
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }

        .btn-accent:hover {
            background: #e02e25;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
        }

        .btn:focus-visible {
            box-shadow: var(--shadow-focus);
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn:disabled {
            background: var(--color-border);
            color: var(--color-light);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        /* Header / Nav */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.02em;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0 auto;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--color-primary);
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            right: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }

        .nav-cta {
            flex-shrink: 0;
        }

        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 14px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-md);
            min-height: 40px;
        }

        .nav-cta .btn:hover {
            background: #e02e25;
            transform: translateY(-1px);
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 36px;
            height: 36px;
            padding: 6px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .hamburger span {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .hamburger:hover {
            background: rgba(15, 15, 15, 0.06);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            z-index: 99;
            flex-direction: column;
            padding: 24px;
            overflow-y: auto;
            border-top: 1px solid var(--color-border);
            box-shadow: 0 12px 30px rgba(15, 15, 15, 0.08);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            font-weight: 500;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-muted);
        }

        .mobile-menu .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .mobile-menu .btn {
            width: 100%;
            margin-top: 24px;
            padding: 14px 0;
            font-size: 15px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-md);
        }

        /* Category Hero */
        .category-hero {
            padding-top: 120px;
            padding-bottom: 36px;
            min-height: 42vh;
            display: flex;
            align-items: center;
            background: var(--color-bg);
        }

        .category-hero .container {
            display: flex;
            align-items: flex-start;
            gap: 40px;
            flex-wrap: wrap;
        }

        .category-hero-text {
            flex: 1 1 55%;
            min-width: 300px;
        }

        .category-hero-text .section-tag {
            margin-bottom: 12px;
        }

        .category-hero-text h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin: 0 0 16px 0;
        }

        .category-hero-text .hero-desc {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 560px;
            margin: 0;
        }

        .category-hero-image {
            flex: 0 0 260px;
            max-width: 260px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 16 / 11;
        }

        .category-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .category-hero-image:hover img {
            transform: scale(1.03);
        }

        /* Breadcrumb */
        .breadcrumb-wrap {
            padding: 16px 0 0;
            background: var(--color-bg);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-light);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--color-primary);
        }

        .breadcrumb .separator {
            color: var(--color-light);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        /* Category Intro */
        .category-intro {
            padding: 32px 0 20px;
            background: var(--color-bg);
        }

        .category-intro .intro-box {
            background: var(--color-bg-soft);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            border: 1px solid var(--color-border);
            max-width: 820px;
        }

        .category-intro p {
            margin: 0;
            font-size: 15px;
            line-height: 1.9;
            color: var(--color-muted);
        }

        /* Article List */
        .article-list {
            padding: 48px 0 70px;
            background: var(--color-bg);
        }

        .article-list .section-head {
            margin-bottom: 32px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }

        .article-card {
            display: flex;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            min-height: 210px;
        }

        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .article-card-image {
            flex: 0 0 40%;
            max-width: 40%;
            position: relative;
            overflow: hidden;
            background: var(--color-bg-soft);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
            transition: transform 0.4s ease;
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.05);
        }

        .article-card-content {
            flex: 1;
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .article-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-muted);
            background: var(--color-bg-soft);
            padding: 3px 8px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            width: fit-content;
            margin-bottom: 10px;
        }

        .article-card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-primary);
            margin: 0 0 8px 0;
        }

        .article-card-title a {
            transition: color var(--transition-fast);
        }

        .article-card-title a:hover {
            color: var(--color-accent);
        }

        .article-card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
            margin: 0 0 12px 0;
            flex-grow: 1;
        }

        .article-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-light);
        }

        .article-card-meta .date {
            white-space: nowrap;
        }

        .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .read-more:hover {
            color: #c93028;
            text-decoration: underline;
        }

        /* Editor Picks */
        .editor-picks {
            padding: 64px 0;
            background: var(--color-bg-soft);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }

        .editor-picks .section-head {
            margin-bottom: 28px;
        }

        .picks-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .pick-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .pick-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .pick-card .pick-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 2px 8px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
        }

        .pick-card .pick-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.5;
            margin: 0;
        }

        .pick-card .pick-desc {
            font-size: 13px;
            color: var(--color-light);
            margin: 6px 0 0;
            line-height: 1.6;
        }

        /* Trend Data */
        .trend-data {
            padding: 64px 0;
            background: var(--color-bg);
        }

        .trend-data .section-head {
            margin-bottom: 32px;
        }

        .trend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .trend-item {
            text-align: left;
            padding: 20px;
            border-left: 3px solid var(--color-accent);
            background: var(--color-white);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            box-shadow: var(--shadow-sm);
        }

        .trend-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }

        .trend-number .unit {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-accent);
        }

        .trend-label {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-band {
            padding: 80px 0;
            background: var(--color-primary);
        }

        .cta-band .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-band-text {
            flex: 1 1 50%;
            min-width: 280px;
        }

        .cta-band-text h2 {
            font-size: clamp(26px, 4vw, 36px);
            font-weight: 700;
            color: #fff;
            margin: 0 0 8px 0;
            line-height: 1.25;
        }

        .cta-band-text p {
            font-size: 16px;
            color: var(--color-footer-text);
            margin: 0;
            line-height: 1.7;
        }

        .cta-band-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .cta-band-actions .btn-primary {
            background: var(--color-accent);
            color: #fff;
            border: 1px solid var(--color-accent);
        }

        .cta-band-actions .btn-primary:hover {
            background: #e02e25;
        }

        .cta-band-actions .btn-outline-light {
            background: transparent;
            border: 1px solid #fff;
            color: #fff;
        }

        .cta-band-actions .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* Footer */
        .footer {
            background: var(--color-primary);
            color: var(--color-footer-text);
            padding: 60px 0 28px;
            margin-top: 0;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1.2fr 1fr;
            gap: 36px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
            font-size: 20px;
        }

        .footer-brand .logo-mark {
            background: var(--color-accent);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: var(--color-footer-text);
            margin: 0;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px 0;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-footer-text);
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 13px;
            color: var(--color-footer-text);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom-links a {
            color: var(--color-footer-text);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: #fff;
            text-decoration: underline;
        }

        .footer-bottom-links span {
            color: rgba(255, 255, 255, 0.3);
        }

        /* Animation classes */
        .reveal {
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 0.5s ease, transform 0.5s ease;
        }

        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .picks-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .header {
                height: 60px;
            }
            .header-inner {
                gap: 10px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .mobile-menu {
                top: 60px;
            }
            .category-hero {
                padding-top: 90px;
                padding-bottom: 24px;
                min-height: auto;
            }
            .category-hero .container {
                flex-direction: column;
                gap: 20px;
            }
            .category-hero-image {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
                aspect-ratio: 16 / 9;
            }
            .category-hero-image img {
                position: static;
                width: 100%;
                height: auto;
            }
            .article-card {
                flex-direction: column;
                min-height: auto;
            }
            .article-card-image {
                flex: 0 0 auto;
                max-width: 100%;
                width: 100%;
                aspect-ratio: 16 / 10;
                position: relative;
            }
            .article-card-image img {
                position: absolute;
                width: 100%;
                height: 100%;
                object-fit: cover;
            }
            .article-card-content {
                padding: 16px 18px;
            }
            .picks-grid {
                grid-template-columns: 1fr;
            }
            .trend-grid {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 50px 0;
            }
            .cta-band .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-band-actions {
                width: 100%;
            }
            .cta-band-actions .btn {
                flex: 1;
                text-align: center;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero-text h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 26px;
            }
            .article-grid {
                gap: 18px;
            }
            .article-card-title {
                font-size: 16px;
            }
            .article-card-desc {
                font-size: 13px;
                -webkit-line-clamp: 3;
                display: -webkit-box;
                -webkit-box-orient: vertical;
                overflow: hidden;
            }
        }

        /* Reduced motion */
        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            .reveal {
                opacity: 1;
                transform: none;
                transition: none;
            }
            .article-card,
            .pick-card,
            .trend-item,
            .btn,
            .article-card-image img {
                transition: none;
            }
            .article-card:hover {
                transform: none;
            }
            .pick-card:hover {
                transform: none;
            }
            .btn:hover {
                transform: none;
            }
        }

        /* Sticky nav adjustments */
        body {
            padding-top: 72px;
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }
        }

/* roulang page: category3 */
:root {
      --color-primary: #0F0F0F;
      --color-accent: #FF3B30;
      --color-bg: #FAFAF8;
      --color-white: #FFFFFF;
      --color-border: #E8E6E1;
      --color-muted: #6B6B6B;
      --color-light: #9B9B96;
      --color-footer-text: #D9D9D4;
      --color-success: #1F8A5B;
      --color-warning: #E07B39;
      --color-bg-soft: #F7F6F3;
      --radius-sm: 4px;
      --radius-md: 8px;
      --radius-lg: 12px;
      --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
      --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
      --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
      --transition-fast: 180ms ease;
      --transition-base: 200ms ease;
      --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
      --container-max: 1200px;
      --gap-section: 100px;
      --gap-card: 28px;
    }

    *,
    *::before,
    *::after {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
      -webkit-text-size-adjust: 100%;
    }

    body {
      font-family: var(--font-sans);
      font-size: 16px;
      line-height: 1.8;
      color: var(--color-muted);
      background-color: var(--color-bg);
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
      overflow-x: hidden;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-fast), border-color var(--transition-fast);
    }

    a:hover {
      color: var(--color-primary);
    }

    img {
      max-width: 100%;
      display: block;
      height: auto;
    }

    button,
    input,
    textarea,
    select {
      font-family: inherit;
      font-size: inherit;
      line-height: inherit;
      color: inherit;
      background: none;
      border: none;
      outline: none;
    }

    button {
      cursor: pointer;
    }

    .container {
      width: 100%;
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: 80px 0;
    }

    .section-head {
      max-width: 680px;
      margin-bottom: 40px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--color-accent);
      background: rgba(255, 59, 48, 0.06);
      padding: 4px 10px;
      border-radius: var(--radius-sm);
      letter-spacing: 0.04em;
      margin-bottom: 12px;
    }

    .section-title {
      margin-bottom: 12px;
      font-size: clamp(28px, 4vw, 40px);
      font-weight: 700;
      line-height: 1.2;
      color: var(--color-primary);
    }

    .section-desc {
      font-size: 16px;
      color: var(--color-muted);
      max-width: 680px;
      line-height: 1.8;
    }

    .section-head.center {
      margin-left: auto;
      margin-right: auto;
      text-align: center;
    }

    .section-head.center .section-desc {
      margin-left: auto;
      margin-right: auto;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 15px;
      font-weight: 600;
      letter-spacing: 0.02em;
      padding: 12px 24px;
      border-radius: var(--radius-md);
      transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
      min-height: 44px;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--color-primary);
      color: var(--color-white);
    }

    .btn-primary:hover {
      background: #232323;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
    }

    .btn-primary:active {
      transform: translateY(0);
      background: #000000;
    }

    .btn-outline {
      background: transparent;
      border: 1px solid var(--color-primary);
      color: var(--color-primary);
    }

    .btn-outline:hover {
      background: rgba(15, 15, 15, 0.08);
      color: var(--color-primary);
      transform: translateY(-2px);
    }

    .btn-outline:active {
      transform: translateY(0);
      background: rgba(15, 15, 15, 0.14);
    }

    .btn-accent {
      background: var(--color-accent);
      color: var(--color-white);
    }

    .btn-accent:hover {
      background: #e02e25;
      color: #fff;
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
    }

    .btn:focus-visible {
      box-shadow: var(--shadow-focus);
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }

    .btn:disabled {
      background: var(--color-border);
      color: var(--color-light);
      cursor: not-allowed;
      transform: none;
      box-shadow: none;
    }

    .text-link {
      display: inline-flex;
      align-items: center;
      gap: 4px;
      font-size: 15px;
      font-weight: 600;
      color: var(--color-accent);
      transition: color var(--transition-fast);
    }

    .text-link:hover {
      color: #c62822;
      text-decoration: underline;
    }

    /* Header / Nav */
    .header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 100;
      height: 72px;
      background: rgba(255, 255, 255, 0.96);
      border-bottom: 1px solid transparent;
      transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
    }

    .header.scrolled {
      border-bottom-color: var(--color-border);
      box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 100%;
      gap: 16px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 18px;
      font-weight: 700;
      color: var(--color-primary);
      letter-spacing: 0.02em;
      white-space: nowrap;
    }

    .logo-mark {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      background: var(--color-primary);
      color: #fff;
      font-size: 16px;
      font-weight: 700;
      border-radius: var(--radius-sm);
    }

    .nav-desktop {
      display: flex;
      align-items: center;
      gap: 28px;
      margin-left: auto;
      margin-right: auto;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--color-muted);
      position: relative;
      padding: 4px 0;
      white-space: nowrap;
    }

    .nav-link::after {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      bottom: -2px;
      height: 2px;
      background: var(--color-primary);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform var(--transition-fast);
    }

    .nav-link:hover {
      color: var(--color-primary);
    }

    .nav-link:hover::after,
    .nav-link.active::after {
      transform: scaleX(1);
    }

    .nav-link.active {
      color: var(--color-primary);
    }

    .nav-cta {
      flex-shrink: 0;
    }

    .hamburger {
      display: none;
      flex-direction: column;
      justify-content: center;
      gap: 5px;
      width: 44px;
      height: 44px;
      padding: 10px;
      background: transparent;
      border-radius: var(--radius-sm);
      transition: background var(--transition-fast);
    }

    .hamburger span {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-primary);
      transition: transform var(--transition-fast), opacity var(--transition-fast);
    }

    .hamburger:hover {
      background: var(--color-bg-soft);
    }

    .hamburger[aria-expanded="true"] span:nth-child(1) {
      transform: translateY(7px) rotate(45deg);
    }

    .hamburger[aria-expanded="true"] span:nth-child(2) {
      opacity: 0;
    }

    .hamburger[aria-expanded="true"] span:nth-child(3) {
      transform: translateY(-7px) rotate(-45deg);
    }

    /* Page Hero */
    .page-hero {
      padding-top: 152px;
      padding-bottom: 56px;
      background: var(--color-bg-soft);
      border-bottom: 1px solid var(--color-border);
    }

    .page-hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 48px;
      align-items: center;
    }

    .page-hero-content h1 {
      font-size: clamp(32px, 5vw, 48px);
      font-weight: 700;
      line-height: 1.2;
      color: var(--color-primary);
      margin-bottom: 16px;
    }

    .page-hero-content p {
      font-size: 17px;
      line-height: 1.8;
      color: var(--color-muted);
      max-width: 560px;
      margin-bottom: 28px;
    }

    .page-hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 16px;
      align-items: center;
    }

    .page-hero-media {
      border-radius: var(--radius-lg);
      overflow: hidden;
      border: 1px solid var(--color-border);
      background: var(--color-white);
      box-shadow: var(--shadow-sm);
    }

    .page-hero-media img {
      width: 100%;
      height: 320px;
      object-fit: cover;
    }

    /* Breadcrumb */
    .breadcrumb-section {
      padding: 16px 0;
      background: var(--color-white);
      border-bottom: 1px solid var(--color-border);
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      font-size: 14px;
      color: var(--color-light);
    }

    .breadcrumb a {
      color: var(--color-muted);
      transition: color var(--transition-fast);
    }

    .breadcrumb a:hover {
      color: var(--color-primary);
    }

    .breadcrumb .separator {
      color: var(--color-light);
    }

    .breadcrumb [aria-current="page"] {
      color: var(--color-primary);
      font-weight: 600;
    }

    /* Intro */
    .intro-section {
      background: var(--color-white);
      border-bottom: 1px solid var(--color-border);
    }

    .intro-grid {
      display: grid;
      grid-template-columns: 1fr 1.2fr;
      gap: 48px;
      align-items: start;
    }

    .intro-text p {
      font-size: 16px;
      line-height: 1.9;
      color: var(--color-muted);
      margin-bottom: 16px;
    }

    .intro-text p:last-child {
      margin-bottom: 0;
    }

    /* Article List */
    .article-list-section {
      background: var(--color-bg);
    }

    .article-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 28px;
      margin-bottom: 36px;
    }

    .list-card {
      display: grid;
      grid-template-columns: 40% 60%;
      min-height: 200px;
      background: var(--color-bg-soft);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      overflow: hidden;
      transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    }

    .list-card:hover {
      transform: translateY(-4px);
      box-shadow: var(--shadow-hover);
      border-color: var(--color-primary);
    }

    .list-card-image {
      display: block;
      overflow: hidden;
      background: var(--color-border);
    }

    .list-card-image img {
      width: 100%;
      height: 100%;
      min-height: 200px;
      object-fit: cover;
      transition: transform var(--transition-base);
    }

    .list-card:hover .list-card-image img {
      transform: scale(1.03);
    }

    .list-card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .list-card-tag {
      display: inline-block;
      align-self: flex-start;
      font-size: 12px;
      font-weight: 600;
      color: var(--color-muted);
      background: var(--color-border);
      padding: 4px 8px;
      border-radius: var(--radius-sm);
      letter-spacing: 0.03em;
    }

    .list-card-title {
      font-size: 18px;
      font-weight: 600;
      line-height: 1.35;
      color: var(--color-primary);
    }

    .list-card-title a {
      color: inherit;
    }

    .list-card-title a:hover {
      color: var(--color-accent);
    }

    .list-card-date {
      font-size: 13px;
      color: var(--color-light);
    }

    .list-card-summary {
      font-size: 14px;
      line-height: 1.7;
      color: var(--color-muted);
      display: -webkit-box;
      -webkit-line-clamp: 3;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .list-card-more {
      margin-top: auto;
      align-self: flex-start;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-accent);
      transition: color var(--transition-fast);
    }

    .list-card-more:hover {
      color: #c62822;
      text-decoration: underline;
    }

    .list-more {
      display: flex;
      justify-content: center;
    }

    /* Featured */
    .featured-section {
      background: var(--color-white);
      border-top: 1px solid var(--color-border);
      border-bottom: 1px solid var(--color-border);
    }

    .featured-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .featured-card {
      display: grid;
      grid-template-columns: 96px 1fr;
      gap: 16px;
      padding: 12px;
      background: var(--color-bg-soft);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    }

    .featured-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: var(--color-primary);
    }

    .featured-card-image {
      width: 96px;
      height: 72px;
      border-radius: var(--radius-sm);
      overflow: hidden;
      background: var(--color-border);
      flex-shrink: 0;
    }

    .featured-card-image img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .featured-card-body {
      display: flex;
      flex-direction: column;
      gap: 4px;
      min-width: 0;
    }

    .featured-card-tag {
      font-size: 12px;
      font-weight: 600;
      color: var(--color-accent);
      letter-spacing: 0.03em;
    }

    .featured-card-title {
      font-size: 15px;
      font-weight: 600;
      line-height: 1.4;
      color: var(--color-primary);
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .featured-card-title a {
      color: inherit;
    }

    .featured-card-title a:hover {
      color: var(--color-accent);
    }

    .featured-card-date {
      font-size: 12px;
      color: var(--color-light);
      margin-top: auto;
    }

    /* Trends */
    .trends-section {
      background: var(--color-bg);
    }

    .trend-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .trend-card {
      background: var(--color-white);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 24px;
      text-align: left;
      transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    }

    .trend-card:hover {
      transform: translateY(-3px);
      box-shadow: var(--shadow-hover);
      border-color: var(--color-primary);
    }

    .trend-value {
      display: block;
      font-size: 18px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.4;
      margin-bottom: 8px;
    }

    .trend-label {
      font-size: 14px;
      line-height: 1.7;
      color: var(--color-muted);
    }

    /* CTA */
    .cta-section {
      background: var(--color-primary);
      color: var(--color-footer-text);
    }

    .cta-inner {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 32px;
    }

    .cta-inner .section-tag {
      background: rgba(255, 59, 48, 0.12);
      color: var(--color-accent);
    }

    .cta-inner h2 {
      font-size: clamp(26px, 3.5vw, 36px);
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      margin-bottom: 12px;
    }

    .cta-inner p {
      font-size: 16px;
      color: var(--color-footer-text);
      max-width: 560px;
    }

    .cta-actions {
      display: flex;
      flex-direction: column;
      gap: 14px;
      flex-shrink: 0;
    }

    .cta-actions .btn-outline {
      border-color: rgba(255, 255, 255, 0.6);
      color: #fff;
    }

    .cta-actions .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      color: #fff;
    }

    /* Footer */
    .footer {
      background: var(--color-primary);
      color: var(--color-footer-text);
      padding: 64px 0 24px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1fr 1fr;
      gap: 40px;
      padding-bottom: 40px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .footer-brand .logo {
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-brand .logo-mark {
      background: var(--color-accent);
    }

    .footer-brand p {
      font-size: 14px;
      line-height: 1.7;
      color: var(--color-footer-text);
      max-width: 300px;
    }

    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }

    .footer-col a {
      display: block;
      font-size: 14px;
      color: var(--color-footer-text);
      margin-bottom: 10px;
      transition: color var(--transition-fast);
    }

    .footer-col a:hover {
      color: #fff;
      text-decoration: underline;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 16px;
      padding-top: 24px;
      font-size: 14px;
      color: var(--color-footer-text);
    }

    .footer-bottom-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .footer-bottom-links a {
      color: var(--color-footer-text);
      transition: color var(--transition-fast);
    }

    .footer-bottom-links a:hover {
      color: #fff;
      text-decoration: underline;
    }

    /* Reveal animations */
    .reveal {
      opacity: 0;
      transform: translateY(8px);
      transition: opacity 0.5s ease, transform 0.5s ease;
    }

    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }

    @media (prefers-reduced-motion: reduce) {
      html {
        scroll-behavior: auto;
      }
      .reveal {
        opacity: 1;
        transform: none;
        transition: none;
      }
      .list-card,
      .featured-card,
      .trend-card,
      .btn,
      .list-card-image img {
        transition: none;
      }
    }

    /* Responsive */
    @media (max-width: 1023px) {
      .nav-desktop,
      .nav-cta {
        display: none;
      }
      .hamburger {
        display: flex;
      }
      .header.menu-open {
        background: #fff;
      }
      .header.menu-open .nav-desktop {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        bottom: 0;
        width: 70%;
        max-width: 360px;
        background: #fff;
        padding: 24px;
        border-right: 1px solid var(--color-border);
        box-shadow: 8px 0 24px rgba(15, 15, 15, 0.08);
        overflow-y: auto;
        margin: 0;
      }
      .header.menu-open .nav-link {
        display: block;
        width: 100%;
        padding: 16px 0;
        font-size: 18px;
        border-bottom: 1px solid var(--color-border);
      }
      .header.menu-open .nav-link::after {
        display: none;
      }
      .header.menu-open .nav-cta {
        display: block;
        margin-top: 24px;
      }
      .header.menu-open .nav-cta .btn {
        width: 100%;
      }
      .page-hero {
        padding-top: 132px;
        padding-bottom: 48px;
      }
      .page-hero-grid {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .page-hero-media img {
        height: 260px;
      }
      .intro-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .article-grid {
        grid-template-columns: 1fr;
      }
      .list-card {
        grid-template-columns: 40% 60%;
      }
      .featured-grid {
        grid-template-columns: 1fr 1fr;
      }
      .trend-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 767px) {
      .section {
        padding: 56px 0;
      }
      .container {
        padding: 0 16px;
      }
      .page-hero {
        padding-top: 112px;
        padding-bottom: 40px;
      }
      .page-hero-content h1 {
        font-size: 28px;
      }
      .page-hero-content p {
        font-size: 16px;
      }
      .page-hero-actions {
        flex-direction: column;
        align-items: stretch;
      }
      .page-hero-actions .btn {
        width: 100%;
      }
      .page-hero-actions .text-link {
        justify-content: center;
      }
      .list-card {
        grid-template-columns: 1fr;
        min-height: 0;
      }
      .list-card-image img {
        min-height: 180px;
        height: 180px;
      }
      .list-card-body {
        padding: 16px;
      }
      .list-card-summary {
        -webkit-line-clamp: 2;
      }
      .featured-grid {
        grid-template-columns: 1fr;
      }
      .trend-grid {
        grid-template-columns: 1fr;
      }
      .cta-inner {
        flex-direction: column;
        align-items: flex-start;
      }
      .cta-actions {
        width: 100%;
        flex-direction: column;
      }
      .cta-actions .btn {
        width: 100%;
      }
      .footer-top {
        grid-template-columns: 1fr;
        gap: 28px;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
      .footer-bottom-links {
        flex-wrap: wrap;
      }
    }

    @media (max-width: 519px) {
      .page-hero-media img {
        height: 200px;
      }
      .featured-grid {
        grid-template-columns: 1fr;
      }
      .trend-grid {
        grid-template-columns: 1fr;
      }
      .header.menu-open .nav-desktop {
        width: 85%;
      }
    }

/* roulang page: category4 */
:root {
            --color-primary: #0F0F0F;
            --color-accent: #FF3B30;
            --color-bg: #FAFAF8;
            --color-white: #FFFFFF;
            --color-border: #E8E6E1;
            --color-muted: #6B6B6B;
            --color-light: #9B9B96;
            --color-footer-text: #D9D9D4;
            --color-success: #1F8A5B;
            --color-warning: #E07B39;
            --color-bg-soft: #F7F6F3;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
            --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
            --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
            --transition-fast: 180ms ease;
            --transition-base: 200ms ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --gap-section: 100px;
            --gap-card: 28px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
        }

        a:hover {
            color: var(--color-primary);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
            background: none;
            border: none;
            outline: none;
        }

        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 40px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }

        .section-title {
            margin-bottom: 12px;
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin-top: 0;
        }

        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }

        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .section-head.center .section-desc {
            margin-left: auto;
            margin-right: auto;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
            min-height: 44px;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }

        .btn-primary:hover {
            background: #232323;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
        }

        .btn-primary:active {
            transform: translateY(0);
            background: #000000;
        }

        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline:hover {
            background: rgba(15, 15, 15, 0.08);
            transform: translateY(-2px);
        }

        .btn-outline:active {
            transform: translateY(0);
            background: rgba(15, 15, 15, 0.14);
        }

        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }

        .btn-accent:hover {
            background: #e02e25;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
        }

        .btn:focus-visible {
            box-shadow: var(--shadow-focus);
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }

        .btn:disabled {
            background: var(--color-border);
            color: var(--color-light);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            flex-shrink: 0;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition-base);
        }

        .nav-link:hover {
            color: var(--color-primary);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }

        .nav-link.active::after {
            width: 100%;
        }

        .nav-cta {
            display: flex;
            align-items: center;
            flex-shrink: 0;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 44px;
            height: 44px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 0;
            z-index: 110;
        }

        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }

        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            right: 0;
            width: 70%;
            max-width: 320px;
            height: 100vh;
            background: var(--color-white);
            border-left: 1px solid var(--color-border);
            padding: 80px 24px 24px;
            z-index: 99;
            transform: translateX(100%);
            transition: transform var(--transition-base);
            box-shadow: -4px 0 20px rgba(15, 15, 15, 0.08);
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-primary);
        }

        .mobile-menu .nav-link.active {
            font-weight: 700;
        }

        .mobile-menu .btn {
            display: flex;
            width: 100%;
            margin-top: 24px;
            text-align: center;
        }

        .breadcrumb {
            padding: 24px 0 0;
            background: transparent;
            margin-top: 72px;
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 14px;
            color: var(--color-light);
        }

        .breadcrumb-list li {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .breadcrumb-list li:not(:last-child)::after {
            content: '>';
            color: var(--color-light);
            font-size: 12px;
        }

        .breadcrumb-list a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb-list a:hover {
            color: var(--color-primary);
        }

        .breadcrumb-list .current {
            color: var(--color-primary);
            font-weight: 500;
        }

        .category-hero {
            padding: 40px 0 32px;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
            margin-top: 72px;
        }

        .category-hero-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            min-height: 220px;
        }

        .category-hero-content {
            flex: 1;
            max-width: 620px;
        }

        .category-hero-content h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin: 0 0 16px;
        }

        .category-hero-content .hero-sub {
            font-size: 17px;
            color: var(--color-muted);
            line-height: 1.8;
            margin: 0;
            max-width: 560px;
        }

        .category-hero-image {
            flex: 0 0 280px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--color-border);
        }

        .category-hero-image img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .category-intro {
            padding: 48px 0 32px;
            background: var(--color-bg);
        }

        .category-intro-box {
            max-width: 840px;
            font-size: 16px;
            line-height: 2;
            color: var(--color-muted);
            margin: 0;
        }

        .article-grid {
            padding: 48px 0 64px;
            background: var(--color-white);
        }

        .article-grid .section-head {
            margin-bottom: 32px;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .article-card {
            display: flex;
            gap: 20px;
            background: var(--color-bg-soft);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            padding: 16px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
        }

        .article-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .article-card-image {
            flex: 0 0 38%;
            max-width: 320px;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            background: var(--color-white);
        }

        .article-card-image img {
            width: 100%;
            height: 100%;
            min-height: 140px;
            object-fit: cover;
            transition: transform var(--transition-base);
        }

        .article-card:hover .article-card-image img {
            transform: scale(1.03);
        }

        .article-card-content {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
            padding: 8px 4px;
        }

        .article-category {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            width: fit-content;
        }

        .article-card-title {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-primary);
            margin: 0 0 8px;
        }

        .article-card-meta {
            font-size: 13px;
            color: var(--color-light);
            margin-bottom: 10px;
        }

        .article-card-summary {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.7;
            margin: 0 0 12px;
        }

        .article-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }

        .article-card-link::after {
            content: '→';
            font-size: 14px;
            transition: transform var(--transition-fast);
        }

        .article-card-link:hover {
            color: var(--color-primary);
        }

        .article-card-link:hover::after {
            transform: translateX(4px);
        }

        .featured-section {
            padding: 64px 0 80px;
            background: var(--color-bg);
        }

        .featured-section .section-head {
            margin-bottom: 32px;
        }

        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .featured-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .featured-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }

        .featured-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-muted);
            background: var(--color-border);
            padding: 3px 8px;
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
        }

        .featured-card-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-primary);
            margin: 0 0 8px;
        }

        .featured-card-desc {
            font-size: 13px;
            color: var(--color-light);
            line-height: 1.6;
            margin: 0;
        }

        .data-section {
            padding: 64px 0 80px;
            background: var(--color-primary);
        }

        .data-section .section-tag {
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.12);
        }

        .data-section .section-title {
            color: var(--color-white);
        }

        .data-section .section-desc {
            color: rgba(217, 217, 212, 0.7);
        }

        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 40px;
        }

        .data-card {
            text-align: left;
            padding: 28px 20px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(217, 217, 212, 0.15);
            border-radius: var(--radius-md);
            transition: background var(--transition-base), transform var(--transition-base);
        }

        .data-card:hover {
            background: rgba(255, 255, 255, 0.08);
            transform: translateY(-2px);
        }

        .data-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--color-white);
            line-height: 1.2;
            margin: 0 0 8px;
        }

        .data-number .unit {
            font-size: 18px;
            font-weight: 500;
            color: rgba(217, 217, 212, 0.7);
            margin-left: 2px;
        }

        .data-label {
            font-size: 14px;
            color: rgba(217, 217, 212, 0.7);
            margin: 0;
        }

        .cta-section {
            padding: 80px 0;
            background: var(--color-bg);
        }

        .cta-box {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            max-width: 820px;
            margin: 0 auto;
        }

        .cta-box h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 16px;
        }

        .cta-box p {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.8;
            margin: 0 0 28px;
        }

        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .faq-section {
            padding: 64px 0 80px;
            background: var(--color-white);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: color var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-accent);
        }

        .faq-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            position: relative;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: '';
            position: absolute;
            top: 50%;
            left: 50%;
            background: currentColor;
            border-radius: 1px;
            transition: transform var(--transition-base);
        }

        .faq-icon::before {
            width: 12px;
            height: 2px;
            transform: translate(-50%, -50%);
        }

        .faq-icon::after {
            width: 2px;
            height: 12px;
            transform: translate(-50%, -50%);
        }

        .faq-question[aria-expanded="true"] .faq-icon::after {
            transform: translate(-50%, -50%) rotate(90deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-base), padding var(--transition-base);
            padding: 0;
        }

        .faq-answer.open {
            max-height: 300px;
            padding-bottom: 20px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--color-muted);
            line-height: 1.8;
            margin: 0;
        }

        .footer {
            background: var(--color-primary);
            color: var(--color-footer-text);
            padding: 56px 0 24px;
        }

        .footer .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1.5fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand .logo {
            color: var(--color-white);
            margin-bottom: 16px;
        }

        .footer-brand .logo-mark {
            background: var(--color-white);
            color: var(--color-primary);
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(217, 217, 212, 0.6);
            margin: 0;
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-white);
            margin: 0 0 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(217, 217, 212, 0.7);
            padding: 6px 0;
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--color-white);
            text-decoration: underline;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(217, 217, 212, 0.15);
            font-size: 13px;
            color: rgba(217, 217, 212, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-bottom-links a {
            color: rgba(217, 217, 212, 0.7);
            transition: color var(--transition-fast);
        }

        .footer-bottom-links a:hover {
            color: var(--color-white);
            text-decoration: underline;
        }

        @media (prefers-reduced-motion: reduce) {
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
                scroll-behavior: auto !important;
            }
        }

        @media (max-width: 1024px) {
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .category-hero-image {
                flex: 0 0 220px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu {
                display: block;
            }
            .category-hero {
                padding: 24px 0;
                margin-top: 60px;
            }
            .category-hero-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
                min-height: auto;
            }
            .category-hero-image {
                flex: none;
                width: 100%;
                max-width: 400px;
            }
            .category-hero-image img {
                height: 160px;
            }
            .breadcrumb {
                margin-top: 60px;
                padding: 16px 0 0;
            }
            .article-card {
                flex-direction: column;
                gap: 12px;
            }
            .article-card-image {
                flex: none;
                max-width: 100%;
                width: 100%;
            }
            .article-card-image img {
                height: 160px;
                min-height: auto;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .data-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 36px 20px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .section {
                padding: 56px 0;
            }
            .category-hero-content h1 {
                font-size: 28px;
            }
            .category-hero-content .hero-sub {
                font-size: 15px;
            }
            .article-card-title {
                font-size: 17px;
            }
            .data-number {
                font-size: 30px;
            }
            .cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .cta-actions .btn {
                width: 100%;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #0F0F0F;
            --color-accent: #FF3B30;
            --color-bg: #FAFAF8;
            --color-white: #FFFFFF;
            --color-border: #E8E6E1;
            --color-muted: #6B6B6B;
            --color-light: #9B9B96;
            --color-footer-text: #D9D9D4;
            --color-success: #1F8A5B;
            --color-warning: #E07B39;
            --color-bg-soft: #F7F6F3;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
            --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
            --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
            --transition-fast: 180ms ease;
            --transition-base: 200ms ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --gap-section: 100px;
            --gap-card: 28px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
        }
        * {
            box-sizing: border-box;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
        }
        a:hover {
            color: var(--color-primary);
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
            background: none;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        .section {
            padding: 80px 0;
        }
        .section-head {
            max-width: 680px;
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .section-title {
            margin: 0 0 12px;
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
            min-height: 44px;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
        }
        .btn-primary:hover {
            background: #232323;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
        }
        .btn-primary:active {
            transform: translateY(0);
            background: #000000;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(15, 15, 15, 0.08);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
            background: rgba(15, 15, 15, 0.14);
        }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
        }
        .btn-accent:hover {
            background: #e02e25;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
        }
        .btn:focus-visible {
            box-shadow: var(--shadow-focus);
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn:disabled {
            background: var(--color-border);
            color: var(--color-light);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.01em;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: var(--color-primary);
            color: var(--color-white);
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            position: relative;
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link.active {
            color: var(--color-primary);
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-fast), opacity var(--transition-fast);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: 72px;
            right: 0;
            width: 70%;
            max-width: 320px;
            height: calc(100vh - 72px);
            background: var(--color-white);
            border-left: 1px solid var(--color-border);
            padding: 24px;
            z-index: 99;
            overflow-y: auto;
            box-shadow: -8px 0 24px rgba(15, 15, 15, 0.08);
        }
        .mobile-menu.open {
            display: block;
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-muted);
        }
        .mobile-menu .nav-link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-menu .nav-link::after {
            display: none;
        }
        .mobile-menu .btn {
            width: 100%;
            margin-top: 24px;
        }
        .page-hero {
            padding-top: 140px;
            padding-bottom: 40px;
            background: var(--color-bg-soft);
            border-bottom: 1px solid var(--color-border);
        }
        .page-hero-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            min-height: 40vh;
        }
        .page-hero-text {
            flex: 1;
        }
        .page-hero-image {
            flex: 0 0 280px;
            width: 280px;
            height: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .page-hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-light);
            margin-bottom: 16px;
        }
        .breadcrumb a {
            color: var(--color-muted);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
            text-decoration: underline;
        }
        .breadcrumb span.sep {
            color: var(--color-light);
        }
        .breadcrumb span.current {
            color: var(--color-primary);
            font-weight: 500;
        }
        .page-hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin: 0 0 16px;
        }
        .page-hero .subtitle {
            font-size: 17px;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 620px;
            margin: 0;
        }
        .section-intro {
            padding: 60px 0;
            background: var(--color-bg);
        }
        .section-intro .intro-text {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-muted);
            max-width: 800px;
            margin: 0;
        }
        .article-list-section {
            padding: 60px 0;
            background: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
        }
        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .article-card {
            display: flex;
            gap: 20px;
            background: var(--color-bg-soft);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
            text-align: left;
            align-items: flex-start;
            width: 100%;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }
        .article-card-image {
            flex: 0 0 140px;
            width: 140px;
            height: 110px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }
        .article-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .article-card-content {
            flex: 1;
            min-width: 0;
        }
        .article-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            background: var(--color-border);
            color: var(--color-muted);
            border-radius: var(--radius-sm);
            padding: 2px 8px;
            margin-bottom: 8px;
        }
        .article-card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.35;
            margin: 0 0 8px;
        }
        .article-card-date {
            font-size: 13px;
            color: var(--color-light);
            margin-bottom: 8px;
            display: block;
        }
        .article-card-summary {
            font-size: 14px;
            color: var(--color-muted);
            line-height: 1.6;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: color var(--transition-fast);
        }
        .article-card-link:hover {
            color: #e02e25;
            text-decoration: underline;
        }
        .featured-section {
            padding: 60px 0;
            background: var(--color-bg);
        }
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 32px;
        }
        .featured-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 16px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
        }
        .featured-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }
        .featured-card-tag {
            font-size: 11px;
            font-weight: 600;
            color: var(--color-success);
            background: rgba(31, 138, 91, 0.06);
            border-radius: var(--radius-sm);
            padding: 2px 6px;
            display: inline-block;
            margin-bottom: 8px;
        }
        .featured-card-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin: 0 0 6px;
        }
        .featured-card-date {
            font-size: 12px;
            color: var(--color-light);
            display: block;
        }
        .data-section {
            padding: 60px 0;
            background: var(--color-primary);
            color: var(--color-footer-text);
        }
        .data-section .section-title {
            color: var(--color-white);
        }
        .data-section .section-desc {
            color: var(--color-footer-text);
        }
        .data-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .data-item {
            text-align: center;
            padding: 20px 12px;
            border: 1px solid rgba(217, 217, 212, 0.2);
            border-radius: var(--radius-md);
            background: rgba(255, 255, 255, 0.03);
        }
        .data-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-white);
            display: block;
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }
        .data-label {
            font-size: 14px;
            color: var(--color-footer-text);
            display: block;
        }
        .cta-section-alt {
            padding: 70px 0;
            background: var(--color-bg-soft);
        }
        .cta-section-alt .cta-box {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .cta-section-alt .cta-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 12px;
        }
        .cta-section-alt .cta-desc {
            font-size: 16px;
            color: var(--color-muted);
            margin: 0 0 28px;
        }
        .cta-section-alt .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .footer {
            background: var(--color-primary);
            color: var(--color-footer-text);
            padding: 60px 0 24px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: var(--color-white);
            margin-bottom: 16px;
        }
        .footer-brand .logo-mark {
            background: var(--color-accent);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-footer-text);
            margin: 0;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-white);
            margin: 0 0 16px;
            letter-spacing: 0.03em;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: var(--color-footer-text);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer-col a:hover {
            color: var(--color-white);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(217, 217, 212, 0.2);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--color-light);
        }
        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer-bottom-links a {
            color: var(--color-footer-text);
            font-size: 13px;
        }
        .footer-bottom-links a:hover {
            color: var(--color-white);
            text-decoration: underline;
        }
        .footer-bottom-links span {
            color: var(--color-light);
        }
        .reveal {
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 500ms ease, transform 500ms ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        @media (prefers-reduced-motion: reduce) {
            * {
                animation-duration: 0.01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }
        @media (max-width: 1023px) {
            .nav-desktop {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .page-hero-inner {
                flex-direction: column;
                align-items: flex-start;
                min-height: auto;
                padding: 24px 0;
            }
            .page-hero-image {
                flex: 0 0 auto;
                width: 100%;
                max-width: 420px;
                height: 220px;
            }
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .data-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 56px 0;
            }
            .page-hero {
                padding-top: 110px;
                padding-bottom: 24px;
            }
            .page-hero h1 {
                font-size: 28px;
            }
            .page-hero .subtitle {
                font-size: 15px;
            }
            .breadcrumb {
                font-size: 13px;
                flex-wrap: wrap;
            }
            .article-card {
                flex-direction: column;
                gap: 12px;
                padding: 16px;
            }
            .article-card-image {
                flex: 0 0 auto;
                width: 100%;
                height: 160px;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .data-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .data-number {
                font-size: 26px;
            }
            .cta-section-alt .cta-box {
                padding: 32px 20px;
            }
            .cta-section-alt .cta-title {
                font-size: 22px;
            }
            .cta-section-alt .cta-actions {
                flex-direction: column;
            }
            .cta-section-alt .cta-actions .btn {
                width: 100%;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-bottom-links {
                justify-content: center;
            }
            .header {
                height: 60px;
            }
            .mobile-menu {
                top: 60px;
                height: calc(100vh - 60px);
            }
            .article-card-title {
                font-size: 16px;
            }
        }
        @media (max-width: 374px) {
            .container {
                padding: 0 12px;
            }
            .page-hero h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 24px;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #0F0F0F;
            --color-accent: #FF3B30;
            --color-bg: #FAFAF8;
            --color-white: #FFFFFF;
            --color-border: #E8E6E1;
            --color-muted: #6B6B6B;
            --color-light: #9B9B96;
            --color-footer-text: #D9D9D4;
            --color-success: #1F8A5B;
            --color-warning: #E07B39;
            --color-bg-soft: #F7F6F3;
            --radius-sm: 4px;
            --radius-md: 8px;
            --radius-lg: 12px;
            --shadow-sm: 0 2px 8px rgba(15, 15, 15, 0.04);
            --shadow-hover: 0 8px 28px rgba(15, 15, 15, 0.10);
            --shadow-focus: 0 0 0 3px rgba(15, 15, 15, 0.08);
            --transition-fast: 180ms ease;
            --transition-base: 200ms ease;
            --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans SC", sans-serif;
            --container-max: 1200px;
            --gap-section: 100px;
            --gap-card: 28px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            scroll-padding-top: 72px;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-muted);
            background-color: var(--color-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast), opacity var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
        }
        a:hover {
            color: var(--color-primary);
        }

        img {
            max-width: 100%;
            display: block;
            height: auto;
        }

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            color: inherit;
            background: none;
            border: none;
            outline: none;
        }
        button {
            cursor: pointer;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 80px 0;
        }

        .section-head {
            max-width: 680px;
            margin-bottom: 40px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: clamp(28px, 4vw, 40px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-primary);
            margin: 0 0 12px;
        }
        .section-desc {
            font-size: 16px;
            color: var(--color-muted);
            max-width: 680px;
            line-height: 1.8;
            margin: 0;
        }
        .section-head.center {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            padding: 12px 24px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-base), box-shadow var(--transition-base);
            min-height: 44px;
            white-space: nowrap;
            border: 1px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .btn-primary:hover {
            background: #232323;
            border-color: #232323;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(15, 15, 15, 0.16);
            color: #fff;
        }
        .btn-primary:active {
            transform: translateY(0);
            background: #000;
            border-color: #000;
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(15, 15, 15, 0.08);
            transform: translateY(-2px);
            color: var(--color-primary);
        }
        .btn-outline:active {
            transform: translateY(0);
            background: rgba(15, 15, 15, 0.14);
        }
        .btn-accent {
            background: var(--color-accent);
            color: var(--color-white);
            border-color: var(--color-accent);
        }
        .btn-accent:hover {
            background: #e02e25;
            border-color: #e02e25;
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(255, 59, 48, 0.25);
            color: #fff;
        }
        .btn:focus-visible {
            box-shadow: var(--shadow-focus);
            outline: 2px solid var(--color-primary);
            outline-offset: 2px;
        }
        .btn:disabled {
            background: var(--color-border);
            color: var(--color-light);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
            border-color: var(--color-border);
        }

        /* Header / Nav */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            height: 72px;
            background: rgba(255, 255, 255, 0.96);
            border-bottom: 1px solid transparent;
            transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .header.scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(15, 15, 15, 0.06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
            gap: 16px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: 0.01em;
            flex-shrink: 0;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            font-size: 18px;
            font-weight: 700;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-desktop .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            letter-spacing: 0.01em;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
        }
        .nav-desktop .nav-link:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
        }
        .nav-desktop .nav-link.active {
            color: var(--color-primary);
            border-bottom-color: var(--color-primary);
            font-weight: 600;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-cta .btn {
            padding: 10px 20px;
            font-size: 15px;
            min-height: 40px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast), transform var(--transition-base);
        }
        .nav-cta .btn:hover {
            background: var(--color-accent);
            transform: translateY(-2px);
            color: #fff;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            transition: background var(--transition-fast);
        }
        .hamburger:hover {
            background: var(--color-bg-soft);
        }
        .hamburger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile nav overlay */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 72px;
            right: 0;
            bottom: 0;
            width: 70%;
            max-width: 320px;
            background: var(--color-white);
            border-left: 1px solid var(--color-border);
            z-index: 99;
            padding: 24px 16px;
            overflow-y: auto;
            box-shadow: -4px 0 20px rgba(15, 15, 15, 0.08);
            transform: translateX(100%);
            transition: transform var(--transition-base);
        }
        .mobile-nav.open {
            transform: translateX(0);
        }
        .mobile-nav a {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-primary);
            border-radius: var(--radius-md);
            transition: background var(--transition-fast);
        }
        .mobile-nav a:hover {
            background: var(--color-bg-soft);
        }
        .mobile-nav a.active {
            font-weight: 700;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.04);
        }
        .mobile-nav .mobile-nav-divider {
            height: 1px;
            background: var(--color-border);
            margin: 16px 0;
        }
        .mobile-nav .mobile-cta {
            margin-top: 16px;
            width: 100%;
            padding: 14px 20px;
            font-size: 16px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-md);
            text-align: center;
            font-weight: 600;
            display: block;
        }
        .mobile-nav .mobile-cta:hover {
            background: var(--color-accent);
            color: #fff;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--color-light);
            padding: 16px 0;
        }
        .breadcrumb a {
            color: var(--color-muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .separator {
            color: var(--color-border);
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            padding: 48px 0 32px;
            background: var(--color-white);
            border-bottom: 1px solid var(--color-border);
        }
        .category-hero .container {
            display: flex;
            align-items: center;
            gap: 40px;
            min-height: 200px;
        }
        .category-hero .hero-text {
            flex: 1;
            max-width: 680px;
        }
        .category-hero .hero-badge {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(255, 59, 48, 0.06);
            padding: 4px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }
        .category-hero h1 {
            font-size: clamp(32px, 5vw, 48px);
            font-weight: 700;
            line-height: 1.15;
            color: var(--color-primary);
            margin: 0 0 16px;
        }
        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--color-muted);
            line-height: 1.8;
            max-width: 520px;
            margin: 0;
        }
        .category-hero .hero-image {
            flex-shrink: 0;
            width: 320px;
            height: 200px;
            border-radius: var(--radius-md);
            overflow: hidden;
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .category-hero .hero-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Category Intro */
        .category-intro {
            padding: 48px 0;
            background: var(--color-bg);
        }
        .category-intro .intro-card {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 32px 36px;
            max-width: 100%;
            box-shadow: var(--shadow-sm);
        }
        .category-intro p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--color-muted);
            margin: 0;
            max-width: 820px;
        }

        /* Article List */
        .article-list {
            padding: 64px 0;
            background: var(--color-bg-soft);
        }
        .article-list .section-head {
            margin-bottom: 36px;
        }
        .article-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
        }
        .article-card {
            display: flex;
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            min-height: 210px;
            transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
            box-shadow: var(--shadow-sm);
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: var(--color-primary);
        }
        .article-card .card-img {
            width: 40%;
            min-height: 210px;
            flex-shrink: 0;
            overflow: hidden;
            position: relative;
        }
        .article-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-base);
        }
        .article-card:hover .card-img img {
            transform: scale(1.04);
        }
        .article-card .card-body {
            flex: 1;
            padding: 24px 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            min-width: 0;
        }
        .article-card .card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-muted);
            background: var(--color-bg-soft);
            padding: 4px 8px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            align-self: flex-start;
        }
        .article-card .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.35;
            color: var(--color-primary);
            margin: 0;
        }
        .article-card .card-title a {
            color: inherit;
        }
        .article-card .card-title a:hover {
            color: var(--color-accent);
        }
        .article-card .card-date {
            font-size: 13px;
            color: var(--color-light);
            letter-spacing: 0.02em;
        }
        .article-card .card-excerpt {
            font-size: 14px;
            line-height: 1.7;
            color: var(--color-muted);
            margin: 0;
            flex: 1;
        }
        .article-card .card-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--transition-fast), color var(--transition-fast);
            align-self: flex-start;
            margin-top: auto;
        }
        .article-card .card-link::after {
            content: "→";
            font-size: 16px;
            transition: transform var(--transition-fast);
        }
        .article-card .card-link:hover {
            color: #c02b22;
            gap: 8px;
        }

        /* Editor Picks */
        .editor-picks {
            padding: 64px 0;
            background: var(--color-white);
        }
        .editor-picks .section-head {
            margin-bottom: 32px;
        }
        .picks-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .pick-card {
            background: var(--color-bg-soft);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
            cursor: default;
        }
        .pick-card:hover {
            transform: translateY(-3px);
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }
        .pick-card .pick-label {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.05em;
            color: var(--color-accent);
            text-transform: uppercase;
        }
        .pick-card .pick-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin: 0;
        }
        .pick-card .pick-meta {
            font-size: 13px;
            color: var(--color-light);
            margin-top: auto;
        }

        /* Data Trends */
        .data-trends {
            padding: 64px 0;
            background: var(--color-primary);
        }
        .data-trends .section-tag {
            background: rgba(255, 59, 48, 0.15);
            color: #ff6b62;
        }
        .data-trends .section-title {
            color: #fff;
        }
        .data-trends .section-desc {
            color: rgba(217, 217, 212, 0.8);
        }
        .trend-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            margin-top: 40px;
        }
        .trend-item {
            text-align: left;
            padding: 24px;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            transition: background var(--transition-base), border-color var(--transition-base);
        }
        .trend-item:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.16);
        }
        .trend-item .trend-number {
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }
        .trend-item .trend-number .suffix {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-accent);
            margin-left: 2px;
        }
        .trend-item .trend-label {
            font-size: 14px;
            color: rgba(217, 217, 212, 0.75);
            line-height: 1.6;
            margin: 0;
        }

        /* CTA Panel */
        .cta-panel {
            padding: 80px 0;
            background: var(--color-bg);
        }
        .cta-panel .cta-inner {
            background: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 56px 48px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            max-width: 800px;
            margin: 0 auto;
        }
        .cta-panel .cta-title {
            font-size: clamp(26px, 3.5vw, 36px);
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.25;
            margin: 0 0 16px;
        }
        .cta-panel .cta-desc {
            font-size: 16px;
            color: var(--color-muted);
            line-height: 1.8;
            margin: 0 0 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-panel .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .cta-panel .cta-actions .btn {
            min-width: 160px;
        }
        .cta-panel .cta-link-secondary {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-muted);
            transition: color var(--transition-fast);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .cta-panel .cta-link-secondary:hover {
            color: var(--color-accent);
        }

        /* Footer */
        .footer {
            background: var(--color-primary);
            color: var(--color-footer-text);
            padding: 64px 0 32px;
            margin-top: 0;
        }
        .footer .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }
        .footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 20px;
        }
        .footer .footer-brand .logo-mark {
            background: var(--color-accent);
        }
        .footer .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(217, 217, 212, 0.75);
            max-width: 320px;
            margin: 0;
        }
        .footer .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }
        .footer .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(217, 217, 212, 0.75);
            padding: 4px 0;
            transition: color var(--transition-fast);
        }
        .footer .footer-col a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 14px;
            color: rgba(217, 217, 212, 0.7);
        }
        .footer .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .footer .footer-bottom-links a {
            color: rgba(217, 217, 212, 0.7);
            transition: color var(--transition-fast);
        }
        .footer .footer-bottom-links a:hover {
            color: #fff;
            text-decoration: underline;
        }
        .footer .footer-bottom-links span {
            color: rgba(217, 217, 212, 0.4);
        }

        /* Scroll animation */
        .reveal {
            opacity: 0;
            transform: translateY(8px);
            transition: opacity 500ms ease, transform 500ms ease;
        }
        .reveal.visible {
            opacity: 1;
            transform: translateY(0);
        }
        .reveal-delay-1 { transition-delay: 80ms; }
        .reveal-delay-2 { transition-delay: 160ms; }
        .reveal-delay-3 { transition-delay: 240ms; }
        .reveal-delay-4 { transition-delay: 320ms; }

        /* Responsive */
        @media (max-width: 1023px) {
            .nav-desktop {
                gap: 18px;
            }
            .nav-desktop .nav-link {
                font-size: 14px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .article-card {
                min-height: 200px;
            }
            .article-card .card-img {
                width: 38%;
                min-height: 200px;
            }
            .picks-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trend-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .footer .footer-top {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .header {
                height: 60px;
            }
            .nav-desktop {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-nav {
                display: block;
                top: 60px;
            }
            .section {
                padding: 56px 0;
            }
            .category-hero .container {
                flex-direction: column;
                align-items: flex-start;
                gap: 24px;
            }
            .category-hero .hero-image {
                width: 100%;
                height: 180px;
            }
            .category-intro .intro-card {
                padding: 24px 20px;
            }
            .article-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .article-card {
                flex-direction: column;
                min-height: auto;
            }
            .article-card .card-img {
                width: 100%;
                min-height: 180px;
                height: 180px;
            }
            .article-card .card-body {
                padding: 18px 16px;
            }
            .picks-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .trend-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .cta-panel .cta-inner {
                padding: 36px 20px;
            }
            .cta-panel .cta-actions {
                flex-direction: column;
                gap: 12px;
            }
            .cta-panel .cta-actions .btn {
                width: 100%;
                min-width: auto;
            }
            .footer .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer .footer-bottom {
                flex-direction: column;
                align-items: center;
                text-align: center;
            }
            .footer .footer-bottom-links {
                justify-content: center;
            }
        }

        @media (max-width: 400px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .article-card .card-img {
                height: 160px;
                min-height: 160px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }
            *,
            *::before,
            *::after {
                animation-duration: 0.01ms !important;
                transition-duration: 0.01ms !important;
            }
            .reveal {
                opacity: 1;
                transform: none;
            }
        }