/* roulang page: index */
:root {
            --color-primary: #17332B;
            --color-primary-deep: #0E241E;
            --color-primary-soft: #1E3A2C;
            --color-accent: #C8F169;
            --color-accent-amber: #E8923A;
            --color-bg: #F6F5F0;
            --color-bg-cool: #F4F7F4;
            --color-card: #FFFFFF;
            --color-card-soft: #FBFBF8;
            --color-text: #18251D;
            --color-text-secondary: #5C6A61;
            --color-text-muted: #8A958D;
            --color-border: #DCE3DC;
            --color-red-earth: #C46A55;
            --radius-sm: 10px;
            --radius-md: 12px;
            --radius-lg: 14px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 4px 8px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.08);
            --transition-base: 200ms ease-in-out;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        ::selection {
            background: var(--color-accent);
            color: var(--color-primary);
        }
        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-page {
                padding: 0 16px;
            }
        }
        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(0,0,0,0.03);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-base), border-color var(--transition-base);
            white-space: nowrap;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-links-desktop a.nav-active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--color-primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23,51,43,0.18);
        }
        .nav-cta:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background var(--transition-base);
        }
        .nav-toggle:hover {
            background: var(--color-bg-cool);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            gap: 8px;
            box-shadow: 0 16px 32px rgba(0,0,0,0.06);
        }
        .mobile-menu a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition-base), padding-left var(--transition-base);
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }
        .mobile-menu a.nav-active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .mobile-menu .mobile-cta {
            margin-top: 12px;
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 14px 20px;
            border-radius: 999px;
            font-weight: 600;
            text-decoration: none;
            border-bottom: none;
        }
        .mobile-menu .mobile-cta:hover {
            background: var(--color-primary-deep);
            padding-left: 20px;
        }
        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-cta.desktop-only {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .mobile-menu.open {
                display: flex;
            }
        }
        /* Section base */
        .section-base {
            padding: 72px 0;
        }
        .section-alt-bg {
            background: #fff;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--color-primary);
            background: rgba(200,241,105,0.25);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            text-transform: uppercase;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }
        .section-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 28px;
        }
        @media (max-width: 640px) {
            .section-base {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
        }
        /* Hero */
        .hero-section {
            position: relative;
            background: var(--color-primary);
            color: #fff;
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
            padding: 80px 0 72px;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/23d72d714f510c76.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
        }
        .hero-section::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23,51,43,0.92) 0%, rgba(14,36,30,0.85) 55%, rgba(23,51,43,0.7) 100%);
            z-index: 1;
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(200,241,105,0.18);
            border: 1px solid rgba(200,241,105,0.4);
            color: var(--color-accent);
            font-size: 0.82rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 999px;
            margin-bottom: 20px;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            color: #fff;
        }
        .hero-title .highlight-accent {
            color: var(--color-accent);
        }
        .hero-desc {
            font-size: 1.05rem;
            line-height: 1.8;
            color: rgba(255,255,255,0.82);
            margin-bottom: 28px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 28px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-accent);
            color: var(--color-primary);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 999px;
            font-size: 0.95rem;
            text-decoration: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            border: none;
            cursor: pointer;
        }
        .btn-primary:hover {
            background: #d8ff7e;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(200,241,105,0.3);
        }
        .btn-primary:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 3px;
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #fff;
            font-weight: 600;
            padding: 14px 24px;
            border-radius: 999px;
            font-size: 0.95rem;
            text-decoration: none;
            border: 1px solid rgba(255,255,255,0.4);
            transition: background var(--transition-base), border-color var(--transition-base);
            cursor: pointer;
        }
        .btn-secondary:hover {
            background: rgba(255,255,255,0.1);
            border-color: rgba(255,255,255,0.6);
        }
        .btn-secondary:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }
        .hero-progress-card {
            background: rgba(255,255,255,0.07);
            border: 1px solid rgba(255,255,255,0.18);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(8px);
        }
        .progress-card-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            margin-bottom: 12px;
            letter-spacing: 0.04em;
        }
        .progress-bar-track {
            width: 100%;
            height: 10px;
            background: rgba(255,255,255,0.15);
            border-radius: 999px;
            overflow: hidden;
            margin-bottom: 14px;
        }
        .progress-bar-fill {
            height: 100%;
            background: var(--color-accent);
            border-radius: 999px;
            width: 65%;
            transition: width 600ms ease;
        }
        .progress-stats {
            display: flex;
            justify-content: space-between;
            font-size: 0.83rem;
            color: rgba(255,255,255,0.75);
        }
        .progress-stats strong {
            color: #fff;
            font-weight: 700;
        }
        .hero-rewards {
            margin-top: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .reward-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(200,241,105,0.3);
            color: #fff;
            font-size: 0.8rem;
            padding: 6px 14px;
            border-radius: 999px;
        }
        @media (max-width: 900px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-title {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 520px) {
            .hero-section {
                padding: 56px 0 48px;
                min-height: auto;
            }
            .hero-title {
                font-size: 1.7rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
        }
        /* Cards */
        .card-base {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            overflow: hidden;
        }
        .card-base:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: #cbd8cb;
            transform: translateY(-2px);
        }
        .card-img-cover {
            width: 100%;
            height: 180px;
            object-fit: cover;
            display: block;
        }
        .card-body {
            padding: 20px;
        }
        .card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }
        .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 12px;
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }
        .badge-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(23,51,43,0.06);
            color: var(--color-primary);
            letter-spacing: 0.03em;
        }
        .badge-accent {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: 999px;
            background: rgba(200,241,105,0.35);
            color: var(--color-primary);
            letter-spacing: 0.03em;
        }
        /* Capability rows */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 12px;
        }
        @media (max-width: 1024px) {
            .capability-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 640px) {
            .capability-grid {
                grid-template-columns: 1fr;
            }
        }
        .capability-card {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: transform var(--transition-base), box-shadow var(--transition-base);
        }
        .capability-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .capability-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(23,51,43,0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 14px;
            color: var(--color-primary);
        }
        .capability-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }
        .capability-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
        }
        /* Status rows */
        .status-row {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .status-row:last-child {
            border-bottom: none;
        }
        .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            margin-top: 6px;
            flex-shrink: 0;
        }
        .status-dot.online {
            background: var(--color-primary);
            box-shadow: 0 0 0 4px rgba(23,51,43,0.12);
        }
        .status-dot.in-progress {
            background: var(--color-accent-amber);
            box-shadow: 0 0 0 4px rgba(232,146,58,0.15);
        }
        .status-dot.planned {
            background: #b5c5bb;
            box-shadow: 0 0 0 4px rgba(181,197,187,0.2);
        }
        .status-title {
            font-weight: 700;
            color: var(--color-primary);
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .status-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        /* Update log */
        .update-log-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }
        .update-log-date {
            flex-shrink: 0;
            width: 90px;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-text-muted);
            padding-top: 2px;
        }
        .update-log-content {
            flex: 1;
        }
        .update-log-title {
            font-weight: 700;
            color: var(--color-text);
            font-size: 0.98rem;
            margin-bottom: 4px;
        }
        .update-log-summary {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        @media (max-width: 520px) {
            .update-log-item {
                flex-direction: column;
                gap: 6px;
            }
            .update-log-date {
                width: auto;
            }
        }
        /* News list */
        .news-list-item {
            padding: 18px 0;
            border-bottom: 1px solid var(--color-border);
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 20px;
            transition: background var(--transition-base);
        }
        .news-list-item:hover {
            background: rgba(200,241,105,0.06);
        }
        .news-left {
            flex: 1;
        }
        .news-title {
            font-weight: 700;
            color: var(--color-text);
            font-size: 1rem;
            margin-bottom: 4px;
            line-height: 1.5;
        }
        .news-excerpt {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .news-right {
            flex-shrink: 0;
            text-align: right;
        }
        .news-date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            white-space: nowrap;
        }
        .news-tag {
            display: inline-block;
            margin-top: 6px;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--color-primary);
            background: rgba(23,51,43,0.06);
            padding: 3px 10px;
            border-radius: 999px;
        }
        @media (max-width: 640px) {
            .news-list-item {
                flex-direction: column;
                gap: 8px;
            }
            .news-right {
                text-align: left;
            }
        }
        /* Brand intro */
        .brand-intro {
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 48px;
            position: relative;
            overflow: hidden;
        }
        .brand-intro::after {
            content: '28';
            position: absolute;
            right: 32px;
            bottom: 16px;
            font-size: 10rem;
            font-weight: 800;
            color: rgba(200,241,105,0.08);
            line-height: 1;
            pointer-events: none;
        }
        .brand-intro-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            z-index: 1;
        }
        .brand-intro-text {
            font-size: 0.98rem;
            line-height: 1.9;
            color: rgba(255,255,255,0.85);
            max-width: 820px;
            position: relative;
            z-index: 1;
        }
        .brand-intro-text p + p {
            margin-top: 16px;
        }
        @media (max-width: 640px) {
            .brand-intro {
                padding: 28px 20px;
            }
            .brand-intro::after {
                font-size: 6rem;
                right: 14px;
                bottom: 8px;
            }
        }
        /* FAQ */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            background: #fff;
            transition: box-shadow var(--transition-base);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            transition: background var(--transition-base);
        }
        .faq-question:hover {
            background: rgba(200,241,105,0.1);
        }
        .faq-question:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: -2px;
        }
        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(23,51,43,0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            color: var(--color-primary);
            transition: transform var(--transition-base);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(200,241,105,0.4);
        }
        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        /* Partners */
        .partners-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 14px 24px;
            align-items: center;
        }
        .partner-name {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-muted);
            letter-spacing: 0.04em;
            transition: color var(--transition-base);
            cursor: default;
            white-space: nowrap;
        }
        .partner-name:hover {
            color: var(--color-primary);
        }
        /* Subscribe CTA */
        .subscribe-panel {
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius-lg);
            padding: 52px 44px;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
            position: relative;
            overflow: hidden;
        }
        .subscribe-panel::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            border-radius: 50%;
            border: 2px solid rgba(200,241,105,0.2);
            pointer-events: none;
        }
        .subscribe-panel::after {
            content: '';
            position: absolute;
            bottom: -80px;
            right: 80px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            border: 3px solid rgba(200,241,105,0.13);
            pointer-events: none;
        }
        .subscribe-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .subscribe-desc {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }
        .subscribe-input {
            flex: 1;
            min-width: 200px;
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: 999px;
            padding: 14px 20px;
            color: #fff;
            font-size: 0.92rem;
            outline: none;
            transition: border-color var(--transition-base), background var(--transition-base);
        }
        .subscribe-input::placeholder {
            color: rgba(255,255,255,0.55);
        }
        .subscribe-input:focus {
            border-color: var(--color-accent);
            background: rgba(255,255,255,0.15);
            outline: 2px solid rgba(200,241,105,0.4);
            outline-offset: 1px;
        }
        .subscribe-btn {
            background: var(--color-accent);
            color: var(--color-primary);
            font-weight: 700;
            padding: 14px 28px;
            border-radius: 999px;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition-base), transform var(--transition-base);
            white-space: nowrap;
        }
        .subscribe-btn:hover {
            background: #d8ff7e;
            transform: translateY(-1px);
        }
        .subscribe-btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        @media (max-width: 768px) {
            .subscribe-panel {
                grid-template-columns: 1fr;
                padding: 36px 24px;
            }
        }
        /* Data note bar */
        .data-note-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 20px 36px;
            align-items: flex-start;
            background: var(--color-bg-cool);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            border: 1px solid var(--color-border);
        }
        .data-note-item {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 0.86rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .data-note-item strong {
            color: var(--color-primary);
            font-weight: 700;
            white-space: nowrap;
        }
        /* Footer */
        footer.site-footer {
            background: var(--color-primary-deep);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand-desc {
            font-size: 0.86rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 260px;
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.04em;
        }
        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col-links a {
            font-size: 0.86rem;
            color: rgba(255,255,255,0.65);
            text-decoration: none;
            transition: color var(--transition-base), padding-left var(--transition-base);
        }
        .footer-col-links a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .footer-bottom {
            padding-top: 26px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.5);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.65);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }
        .footer-badge-links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        /* Decorative */
        .decor-circle {
            position: absolute;
            border-radius: 50%;
            pointer-events: none;
        }
        .decor-grid-line {
            position: absolute;
            pointer-events: none;
            opacity: 0.15;
        }
        /* Utilities */
        .text-accent {
            color: var(--color-accent);
        }
        .text-primary {
            color: var(--color-primary);
        }
        .bg-primary-soft {
            background: var(--color-primary-soft);
        }
        .border-radius-12 {
            border-radius: 12px;
        }
        .transition-base {
            transition: var(--transition-base);
        }

/* roulang page: category1 */
:root {
            --color-primary: #17332B;
            --color-primary-deep: #0E241E;
            --color-primary-soft: #1E3A2C;
            --color-accent: #C8F169;
            --color-accent-amber: #E8923A;
            --color-bg: #F6F5F0;
            --color-bg-cool: #F4F7F4;
            --color-card: #FFFFFF;
            --color-card-soft: #FBFBF8;
            --color-text: #18251D;
            --color-text-secondary: #5C6A61;
            --color-text-muted: #8A958D;
            --color-border: #DCE3DC;
            --color-red-earth: #C46A55;
            --radius-sm: 10px;
            --radius-md: 12px;
            --radius-lg: 14px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 4px 8px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.08);
            --transition-base: 200ms ease-in-out;
        }

        html {
            scroll-behavior: smooth;
            box-sizing: border-box;
        }
        *, *::before, *::after {
            box-sizing: inherit;
        }
        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button, input, textarea, select {
            font-family: inherit;
        }
        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 640px) {
            .container-page {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(0,0,0,0.03);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-base), border-color var(--transition-base);
            white-space: nowrap;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-links-desktop a.nav-active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff !important;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--color-primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23,51,43,0.18);
        }
        .nav-cta:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background var(--transition-base);
        }
        .nav-toggle:hover {
            background: var(--color-bg-cool);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            gap: 8px;
            box-shadow: 0 16px 32px rgba(0,0,0,0.06);
        }
        .mobile-menu a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition-base), padding-left var(--transition-base);
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }
        .mobile-menu a.nav-active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .mobile-menu .mobile-cta {
            margin-top: 12px;
            background: var(--color-primary);
            color: #fff !important;
            text-align: center;
            padding: 14px 20px;
            border-radius: 999px;
            font-weight: 600;
            text-decoration: none;
        }
        .desktop-only {
            display: inline-flex;
        }
        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .desktop-only {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 12px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-text-secondary);
            transition: color var(--transition-base);
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .separator {
            color: var(--color-text-muted);
            user-select: none;
        }
        .breadcrumb .current {
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Category header */
        .category-header {
            padding: 48px 0 36px;
            background: linear-gradient(180deg, #FBFBF8 0%, var(--color-bg) 100%);
            border-bottom: 1px solid var(--color-border);
        }
        .category-header-inner {
            max-width: 860px;
        }
        .category-header h1 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--color-primary);
            line-height: 1.25;
            margin: 0 0 14px 0;
        }
        .category-header p {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.8;
            max-width: 720px;
        }

        /* Section base */
        .section-block {
            padding: 56px 0;
        }
        .section-block-alt {
            background: var(--color-bg-cool);
        }
        .section-title {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.015em;
            margin: 0 0 8px 0;
            line-height: 1.3;
        }
        .section-subtitle {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            margin: 0 0 28px 0;
            max-width: 680px;
        }

        /* Report list */
        .report-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .report-card {
            display: flex;
            gap: 20px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
        }
        .report-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(23,51,43,0.18);
            transform: translateY(-2px);
        }
        .report-card-img {
            flex-shrink: 0;
            width: 160px;
            height: 110px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background: var(--color-bg-cool);
        }
        .report-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .report-card-body {
            flex: 1;
            min-width: 0;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 8px;
        }
        .report-card-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
            margin: 0;
            transition: color var(--transition-base);
        }
        .report-card:hover .report-card-title {
            color: var(--color-primary);
        }
        .report-card-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .report-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .report-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .report-meta .meta-icon {
            width: 14px;
            height: 14px;
            flex-shrink: 0;
            color: var(--color-text-muted);
        }
        .report-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(200,241,105,0.18);
            color: var(--color-primary);
            white-space: nowrap;
        }
        .report-tag-hot {
            background: rgba(232,146,58,0.15);
            color: #B56A1E;
        }
        @media (max-width: 640px) {
            .report-card {
                flex-direction: column;
                padding: 14px;
            }
            .report-card-img {
                width: 100%;
                height: 180px;
            }
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-base);
            user-select: none;
        }
        .tag-chip:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(200,241,105,0.08);
        }
        .tag-chip.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }

        /* Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }
        .stat-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .stat-number .unit {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-secondary);
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }
        @media (max-width: 768px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }
        @media (max-width: 480px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stat-number {
                font-size: 1.5rem;
            }
        }

        /* Related topics */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }
        .related-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
        }
        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(23,51,43,0.18);
            transform: translateY(-2px);
        }
        .related-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px 0;
            line-height: 1.4;
        }
        .related-card p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.65;
        }
        .related-card .related-link {
            display: inline-block;
            margin-top: 12px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            transition: color var(--transition-base);
        }
        .related-card .related-link:hover {
            color: var(--color-primary-deep);
            text-decoration: underline;
        }
        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Subscribe CTA */
        .subscribe-cta {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }
        .subscribe-cta-content h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px 0;
            letter-spacing: -0.015em;
        }
        .subscribe-cta-content p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
            margin: 0;
            max-width: 520px;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }
        .subscribe-form input {
            padding: 12px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,0.25);
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 0.9rem;
            width: 260px;
            outline: none;
            transition: border-color var(--transition-base), background var(--transition-base);
        }
        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.5);
        }
        .subscribe-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255,255,255,0.15);
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .subscribe-form button {
            padding: 12px 28px;
            border-radius: 999px;
            background: var(--color-accent);
            color: var(--color-primary-deep);
            font-size: 0.9rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }
        .subscribe-form button:hover {
            background: #D8F580;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(0,0,0,0.2);
        }
        .subscribe-form button:focus-visible {
            outline: 2px solid var(--color-accent-amber);
            outline-offset: 2px;
        }
        @media (max-width: 768px) {
            .subscribe-cta {
                flex-direction: column;
                align-items: flex-start;
                padding: 32px 24px;
            }
            .subscribe-form {
                width: 100%;
            }
            .subscribe-form input {
                width: 100%;
            }
            .subscribe-form button {
                width: 100%;
            }
        }

        /* Footer */
        footer.site-footer {
            background: var(--color-primary-deep);
            color: rgba(255,255,255,0.75);
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-brand-desc {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.55);
            line-height: 1.7;
            margin: 0;
            max-width: 300px;
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            color: #fff;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col-links a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.6);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-col-links a:hover {
            color: var(--color-accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 14px;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.4);
        }
        .footer-badge-links {
            display: flex;
            gap: 14px;
            margin-left: auto;
        }
        .footer-badge-links a {
            color: rgba(255,255,255,0.5);
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-badge-links a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .footer-badge-links {
                margin-left: 0;
            }
        }
        @media (max-width: 480px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Timeline extra section */
        .timeline-mini {
            display: flex;
            flex-direction: column;
            gap: 0;
            border-left: 2px solid var(--color-border);
            padding-left: 24px;
        }
        .timeline-item {
            margin-bottom: 20px;
            position: relative;
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -30px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 2px solid var(--color-primary);
        }
        .timeline-item .timeline-date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-bottom: 4px;
        }
        .timeline-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 4px 0;
        }
        .timeline-item p {
            font-size: 0.88rem;
            color: var(--color-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* Utility */
        .text-primary {
            color: var(--color-primary);
        }
        .bg-primary {
            background-color: var(--color-primary);
        }
        .text-accent {
            color: var(--color-accent);
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }

/* roulang page: category2 */
:root {
            --color-primary: #17332B;
            --color-primary-deep: #0E241E;
            --color-primary-soft: #1E3A2C;
            --color-accent: #C8F169;
            --color-accent-amber: #E8923A;
            --color-bg: #F6F5F0;
            --color-bg-cool: #F4F7F4;
            --color-card: #FFFFFF;
            --color-card-soft: #FBFBF8;
            --color-text: #18251D;
            --color-text-secondary: #5C6A61;
            --color-text-muted: #8A958D;
            --color-border: #DCE3DC;
            --color-red-earth: #C46A55;
            --radius-sm: 10px;
            --radius-md: 12px;
            --radius-lg: 14px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 4px 8px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.08);
            --transition-base: 200ms ease-in-out;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), background var(--transition-base), border-color var(--transition-base);
        }
        a:hover {
            color: var(--color-primary-deep);
        }
        button,
        input {
            font-family: inherit;
        }
        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 768px) {
            .container-page {
                padding: 0 16px;
            }
        }
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(0,0,0,0.03);
        }
        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .nav-links-desktop {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-links-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-base), border-color var(--transition-base);
            white-space: nowrap;
        }
        .nav-links-desktop a:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }
        .nav-links-desktop a.nav-active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }
        .nav-cta:hover {
            background: var(--color-primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23,51,43,0.18);
            color: #fff;
        }
        .nav-cta:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background var(--transition-base);
        }
        .nav-toggle:hover {
            background: var(--color-bg-cool);
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            gap: 8px;
            box-shadow: 0 16px 32px rgba(0,0,0,0.06);
        }
        .mobile-menu a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition-base), padding-left var(--transition-base);
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }
        .mobile-menu a.nav-active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .mobile-menu .mobile-cta {
            margin-top: 12px;
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 14px 20px;
            border-radius: 999px;
            font-weight: 600;
            text-decoration: none;
            border: none;
        }
        .mobile-menu .mobile-cta:hover {
            background: var(--color-primary-deep);
            color: #fff;
        }
        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .desktop-only {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.open {
                display: flex;
            }
        }
        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }
        main {
            display: block;
        }
        section {
            padding: 64px 0;
        }
        @media (max-width: 768px) {
            section {
                padding: 40px 0;
            }
        }
        .section-alt {
            background-color: #fff;
        }
        .breadcrumb-bar {
            padding: 20px 0 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }
        .breadcrumb-bar a {
            color: var(--color-text-secondary);
        }
        .breadcrumb-bar a:hover {
            color: var(--color-primary);
        }
        .breadcrumb-sep {
            margin: 0 6px;
            color: var(--color-border);
        }
        .category-hero {
            padding: 32px 0 36px;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: "";
            position: absolute;
            top: -80px;
            right: -40px;
            width: 320px;
            height: 320px;
            border-radius: 50%;
            border: 2px solid rgba(23,51,43,0.06);
            pointer-events: none;
        }
        .category-hero::after {
            content: "28";
            position: absolute;
            bottom: -20px;
            right: 28px;
            font-size: 7rem;
            font-weight: 800;
            color: rgba(23,51,43,0.04);
            line-height: 1;
            pointer-events: none;
        }
        .category-h1 {
            font-size: 34px;
            line-height: 1.25;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 10px;
        }
        @media (max-width: 768px) {
            .category-h1 {
                font-size: 26px;
            }
        }
        .category-sub {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 720px;
            margin: 0;
            line-height: 1.75;
        }
        .topic-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        @media (max-width: 768px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }
        .topic-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .topic-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            border-color: rgba(23,51,43,0.2);
        }
        .topic-card-img {
            width: 100%;
            height: 220px;
            object-fit: cover;
            background: var(--color-bg-cool);
        }
        .topic-card-body {
            padding: 22px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .topic-card-tag {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-bottom: 10px;
        }
        .tag-chip {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 500;
            background: var(--color-bg-cool);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            white-space: nowrap;
        }
        .tag-chip.accent {
            background: rgba(200,241,105,0.2);
            color: var(--color-primary);
            border-color: rgba(200,241,105,0.5);
        }
        .topic-card-title {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px;
            line-height: 1.35;
        }
        .topic-card-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0 0 16px;
            flex: 1;
        }
        .topic-card-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 0.8rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
        }
        .topic-card-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-left: auto;
        }
        .topic-card-link:hover {
            color: var(--color-primary-deep);
            text-decoration: underline;
        }
        .tag-cloud-wrap {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .tag-cloud-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 16px;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--color-bg-cool);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
            transition: all var(--transition-base);
        }
        .tag-cloud a:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-1px);
        }
        .rank-list {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-card);
        }
        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 0;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-base);
        }
        .rank-item:last-child {
            border-bottom: none;
        }
        .rank-item:hover {
            background: var(--color-bg-cool);
            border-radius: 8px;
            padding-left: 8px;
            padding-right: 8px;
        }
        .rank-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .rank-number.secondary {
            background: var(--color-bg-cool);
            color: var(--color-text-secondary);
            border: 1px solid var(--color-border);
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-name {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin: 0;
        }
        .rank-heat {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        @media (max-width: 768px) {
            .related-grid {
                grid-template-columns: 1fr;
            }
        }
        .related-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }
        .related-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .related-card-img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .related-card-body {
            padding: 16px 18px 18px;
        }
        .related-card-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 6px;
            line-height: 1.4;
        }
        .related-card-desc {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        .faq-section {
            background: #fff;
        }
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: var(--color-card-soft);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: rgba(23,51,43,0.25);
        }
        .faq-item summary {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background var(--transition-base);
        }
        .faq-item summary:hover {
            background: var(--color-bg-cool);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "+";
            font-size: 1.4rem;
            font-weight: 400;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 22px 18px;
            color: var(--color-text-secondary);
            font-size: 0.95rem;
            line-height: 1.75;
        }
        .subscribe-panel {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            color: #fff;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 16px 40px rgba(23,51,43,0.2);
        }
        @media (max-width: 768px) {
            .subscribe-panel {
                padding: 28px 20px;
                flex-direction: column;
                text-align: center;
            }
        }
        .subscribe-panel h2 {
            font-size: 1.6rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: #fff;
        }
        .subscribe-panel p {
            margin: 0;
            color: rgba(255,255,255,0.85);
            font-size: 0.95rem;
            max-width: 480px;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            align-items: center;
        }
        .subscribe-form input {
            padding: 12px 18px;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,0.3);
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 0.9rem;
            width: 260px;
            max-width: 100%;
            outline: none;
            transition: border-color var(--transition-base), background var(--transition-base);
        }
        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.6);
        }
        .subscribe-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255,255,255,0.15);
        }
        .subscribe-form button {
            padding: 12px 28px;
            border-radius: 999px;
            background: var(--color-accent);
            color: var(--color-primary-deep);
            font-weight: 700;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition-base), transform var(--transition-base);
        }
        .subscribe-form button:hover {
            background: #d6f585;
            transform: translateY(-1px);
        }
        .subscribe-form button:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }
        .section-header {
            margin-bottom: 32px;
        }
        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-primary);
            margin: 0 0 8px;
            line-height: 1.3;
        }
        @media (max-width: 768px) {
            .section-header h2 {
                font-size: 22px;
            }
        }
        .section-header p {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            margin: 0;
            max-width: 680px;
            line-height: 1.7;
        }
        .badge-accent {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            background: rgba(200,241,105,0.2);
            color: var(--color-primary);
            border: 1px solid rgba(200,241,105,0.5);
            white-space: nowrap;
        }
        footer.site-footer {
            background: var(--color-primary-deep);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 24px;
            margin-top: 32px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }
        .footer-brand-name {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand-desc {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
            margin: 0;
            max-width: 320px;
        }
        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col-links a {
            font-size: 0.88rem;
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: color var(--transition-base), padding-left var(--transition-base);
        }
        .footer-col-links a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px 20px;
            align-items: center;
            font-size: 0.78rem;
            color: rgba(255,255,255,0.55);
        }
        .footer-badge-links {
            display: flex;
            gap: 14px;
            margin-left: auto;
        }
        .footer-badge-links a {
            color: rgba(255,255,255,0.55);
            font-size: 0.78rem;
            text-decoration: none;
            transition: color var(--transition-base);
        }
        .footer-badge-links a:hover {
            color: var(--color-accent);
        }
        @media (max-width: 768px) {
            .footer-badge-links {
                margin-left: 0;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        .deco-ring {
            position: absolute;
            border-radius: 50%;
            border: 2px solid rgba(23,51,43,0.06);
            pointer-events: none;
        }
        .deco-ring.r1 {
            width: 220px;
            height: 220px;
            top: -60px;
            left: -80px;
        }
        .deco-ring.r2 {
            width: 140px;
            height: 140px;
            bottom: 20px;
            right: 40px;
            border-color: rgba(200,241,105,0.2);
        }

/* roulang page: category3 */
:root {
            --color-primary: #17332B;
            --color-primary-deep: #0E241E;
            --color-primary-soft: #1E3A2C;
            --color-accent: #C8F169;
            --color-accent-amber: #E8923A;
            --color-bg: #F6F5F0;
            --color-bg-cool: #F4F7F4;
            --color-card: #FFFFFF;
            --color-card-soft: #FBFBF8;
            --color-text: #18251D;
            --color-text-secondary: #5C6A61;
            --color-text-muted: #8A958D;
            --color-border: #DCE3DC;
            --color-red-earth: #C46A55;
            --radius-sm: 10px;
            --radius-md: 12px;
            --radius-lg: 14px;
            --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(0, 0, 0, 0.04);
            --shadow-card-hover: 0 4px 8px rgba(0, 0, 0, 0.06), 0 16px 40px rgba(0, 0, 0, 0.08);
            --transition-base: 200ms ease-in-out;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 640px) {
            .container-page {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.03);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .nav-links-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-base), border-color var(--transition-base);
            white-space: nowrap;
        }

        .nav-links-desktop a:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }

        .nav-links-desktop a.nav-active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23, 51, 43, 0.18);
        }

        .nav-cta:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background var(--transition-base);
        }

        .nav-toggle:hover {
            background: var(--color-bg-cool);
        }

        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            gap: 8px;
            box-shadow: 0 16px 32px rgba(0, 0, 0, 0.06);
        }

        .mobile-menu a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition-base), padding-left var(--transition-base);
        }

        .mobile-menu a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }

        .mobile-menu a.nav-active {
            color: var(--color-primary);
            font-weight: 700;
        }

        .mobile-menu .mobile-cta {
            margin-top: 12px;
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 14px 20px;
            border-radius: 999px;
            font-weight: 600;
            text-decoration: none;
            border: none;
        }

        @media (max-width: 768px) {
            .nav-links-desktop,
            .nav-cta.desktop-only {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .mobile-menu.open {
                display: flex;
            }
        }

        @media (min-width: 769px) {
            .mobile-menu {
                display: none !important;
            }
        }

        /* Section common */
        .wiki-section {
            padding: 64px 0;
        }

        .wiki-section-alt {
            background: #fff;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-accent-amber);
            margin-bottom: 12px;
        }

        .section-label::before {
            content: '';
            width: 18px;
            height: 2px;
            background: var(--color-accent-amber);
            border-radius: 2px;
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            color: var(--color-primary);
            margin-bottom: 16px;
        }

        .section-desc {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.8;
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

        .breadcrumb .separator {
            color: var(--color-text-muted);
            font-size: 0.7rem;
        }

        /* Hero light banner */
        .wiki-hero {
            background: linear-gradient(180deg, rgba(23, 51, 43, 0.04) 0%, rgba(23, 51, 43, 0) 100%), var(--color-bg);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--color-border);
            position: relative;
            overflow: hidden;
        }

        .wiki-hero::before {
            content: '28';
            position: absolute;
            right: 48px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 10rem;
            font-weight: 800;
            color: rgba(23, 51, 43, 0.06);
            line-height: 1;
            pointer-events: none;
            letter-spacing: -0.04em;
        }

        .wiki-hero h1 {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            line-height: 1.25;
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .wiki-hero h1 {
                font-size: 2rem;
            }
            .wiki-hero::before {
                font-size: 5rem;
                right: 16px;
                opacity: 0.5;
            }
        }

        /* Term card */
        .term-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        @media (max-width: 1024px) {
            .term-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .term-grid {
                grid-template-columns: 1fr;
            }
        }

        .term-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .term-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(23, 51, 43, 0.25);
            transform: translateY(-2px);
        }

        .term-card-header {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 12px;
            margin-bottom: 14px;
        }

        .term-card-name {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
        }

        .term-card-en {
            font-size: 0.75rem;
            font-weight: 500;
            letter-spacing: 0.05em;
            color: var(--color-text-muted);
            text-transform: uppercase;
            margin-top: 2px;
        }

        .term-badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 0.7rem;
            font-weight: 600;
            background: rgba(200, 241, 105, 0.2);
            color: var(--color-primary);
            letter-spacing: 0.04em;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .term-card-desc {
            font-size: 0.92rem;
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex-grow: 1;
        }

        .term-card-meta {
            border-top: 1px solid var(--color-border);
            padding-top: 14px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .term-card-meta span {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        .term-card-meta .related-link {
            font-size: 0.8rem;
            color: var(--color-primary);
            text-decoration: none;
            font-weight: 500;
            transition: color var(--transition-base);
        }

        .term-card-meta .related-link:hover {
            color: var(--color-accent-amber);
            text-decoration: underline;
        }

        /* Filter tags */
        .term-filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 24px;
        }

        .term-filter-btn {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .term-filter-btn:hover {
            border-color: var(--color-primary);
            color: var(--color-primary);
            background: rgba(23, 51, 43, 0.04);
        }

        .term-filter-btn.active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            font-weight: 600;
        }

        .term-filter-btn:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        /* Keyword cloud */
        .keyword-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .keyword-tag {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.85rem;
            font-weight: 500;
            background: #fff;
            border: 1px solid var(--color-border);
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: all var(--transition-base);
            white-space: nowrap;
        }

        .keyword-tag:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(23, 51, 43, 0.15);
        }

        .keyword-tag.highlight {
            background: rgba(200, 241, 105, 0.25);
            border-color: rgba(23, 51, 43, 0.3);
            color: var(--color-primary);
            font-weight: 600;
        }

        /* Hot ranking */
        .rank-list {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 18px 24px;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-base);
        }

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

        .rank-item:hover {
            background: var(--color-bg-cool);
        }

        .rank-number {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--color-primary);
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: rgba(200, 241, 105, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .rank-number.top1 {
            background: var(--color-accent-amber);
            color: var(--color-primary-deep);
        }

        .rank-info {
            flex-grow: 1;
            min-width: 0;
        }

        .rank-name {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .rank-bar-wrap {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .rank-bar-bg {
            flex-grow: 1;
            height: 6px;
            background: var(--color-border);
            border-radius: 999px;
            overflow: hidden;
        }

        .rank-bar-fill {
            height: 100%;
            background: var(--color-primary);
            border-radius: 999px;
            transition: width 600ms ease-in-out;
        }

        .rank-bar-fill.accent {
            background: var(--color-accent-amber);
        }

        .rank-percent {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        /* CTA Section */
        .cta-section {
            background: var(--color-primary);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '28';
            position: absolute;
            left: -20px;
            bottom: -40px;
            font-size: 12rem;
            font-weight: 800;
            color: rgba(255, 255, 255, 0.04);
            line-height: 1;
            pointer-events: none;
            letter-spacing: -0.04em;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1rem;
            max-width: 560px;
            margin-bottom: 24px;
        }

        .cta-subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            flex-wrap: wrap;
        }

        .cta-input {
            flex-grow: 1;
            min-width: 220px;
            padding: 14px 20px;
            border-radius: 999px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            transition: border-color var(--transition-base), background var(--transition-base);
            outline: none;
        }

        .cta-input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .cta-input:focus {
            border-color: var(--color-accent);
            background: rgba(255, 255, 255, 0.15);
        }

        .cta-input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .cta-btn {
            padding: 14px 28px;
            border-radius: 999px;
            background: var(--color-accent);
            color: var(--color-primary-deep);
            font-weight: 700;
            font-size: 0.95rem;
            border: none;
            cursor: pointer;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            white-space: nowrap;
        }

        .cta-btn:hover {
            background: #d9f78e;
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(200, 241, 105, 0.25);
        }

        .cta-btn:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        /* Extra article cards */
        .article-mini-gallery {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        @media (max-width: 1024px) {
            .article-mini-gallery {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .article-mini-gallery {
                grid-template-columns: 1fr;
            }
        }

        .article-mini-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            text-decoration: none;
            color: inherit;
            display: flex;
            flex-direction: column;
        }

        .article-mini-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }

        .article-mini-img {
            aspect-ratio: 16 / 9;
            background: var(--color-bg-cool);
            overflow: hidden;
            position: relative;
        }

        .article-mini-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .article-mini-body {
            padding: 18px 20px 20px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }

        .article-mini-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .article-mini-body p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex-grow: 1;
        }

        .article-mini-meta {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            border-top: 1px solid var(--color-border);
            padding-top: 12px;
            display: flex;
            justify-content: space-between;
            gap: 8px;
        }

        /* Data note */
        .data-note-bar {
            background: var(--color-bg-cool);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 20px 0;
        }

        .data-note-bar p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

        .data-note-bar .note-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 12px;
            border-radius: 999px;
            background: #fff;
            border: 1px solid var(--color-border);
            font-size: 0.78rem;
            color: var(--color-text-secondary);
            white-space: nowrap;
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary-deep);
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 640px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .footer-brand-name {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-brand-desc {
            font-size: 0.85rem;
            line-height: 1.7;
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col-links a {
            color: rgba(255, 255, 255, 0.65);
            text-decoration: none;
            font-size: 0.88rem;
            transition: color var(--transition-base), padding-left var(--transition-base);
        }

        .footer-col-links a:hover {
            color: var(--color-accent);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.78rem;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-badge-links {
            display: flex;
            gap: 12px;
            margin-left: auto;
        }

        .footer-badge-links a {
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

        /* Focus visible global */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

/* roulang page: category4 */
:root {
      --color-primary: #17332B;
      --color-primary-deep: #0E241E;
      --color-primary-soft: #1E3A2C;
      --color-accent: #C8F169;
      --color-accent-amber: #E8923A;
      --color-bg: #F6F5F0;
      --color-bg-cool: #F4F7F4;
      --color-card: #FFFFFF;
      --color-card-soft: #FBFBF8;
      --color-text: #18251D;
      --color-text-secondary: #5C6A61;
      --color-text-muted: #8A958D;
      --color-border: #DCE3DC;
      --color-red-earth: #C46A55;
      --radius-sm: 10px;
      --radius-md: 12px;
      --radius-lg: 14px;
      --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
      --shadow-card-hover: 0 4px 8px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.08);
      --transition-base: 200ms ease-in-out;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
      background-color: var(--color-bg);
      color: var(--color-text);
      line-height: 1.7;
      -webkit-font-smoothing: antialiased;
      -moz-osx-font-smoothing: grayscale;
    }

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

    a, button, input, summary {
      font-family: inherit;
    }

    a {
      color: var(--color-primary);
      transition: color var(--transition-base), background var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
    }

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

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

    button {
      border: none;
      cursor: pointer;
      background: none;
    }

    .container-page {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .section {
      padding: 64px 0;
    }

    .section-alt {
      background-color: var(--color-bg-cool);
    }

    .section-heading {
      font-size: 1.85rem;
      line-height: 1.3;
      letter-spacing: -0.01em;
      color: var(--color-primary);
      font-weight: 700;
      margin-bottom: 12px;
    }

    .section-subheading {
      font-size: 1rem;
      color: var(--color-text-secondary);
      line-height: 1.8;
      margin-bottom: 32px;
    }

    .btn-primary,
    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 12px 22px;
      border-radius: 999px;
      font-weight: 600;
      font-size: 0.95rem;
      text-decoration: none;
      transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    }

    .btn-primary {
      background: var(--color-primary);
      color: #fff;
      border: 1px solid var(--color-primary);
    }
    .btn-primary:hover {
      background: var(--color-primary-deep);
      border-color: var(--color-primary-deep);
      transform: translateY(-1px);
      box-shadow: 0 10px 24px rgba(23,51,43,0.2);
      color: #fff;
    }
    .btn-primary:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .btn-secondary {
      background: #fff;
      color: var(--color-primary);
      border: 1px solid var(--color-border);
    }
    .btn-secondary:hover {
      background: var(--color-bg-cool);
      border-color: #b7c2b8;
      transform: translateY(-1px);
    }
    .btn-secondary:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .badge-tag {
      display: inline-block;
      padding: 4px 10px;
      background: #EEF3F0;
      color: var(--color-primary);
      border-radius: 999px;
      font-size: 0.78rem;
      font-weight: 600;
      letter-spacing: 0.01em;
    }

    /* Header / Navigation */
    header.site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--color-border);
      box-shadow: 0 1px 8px rgba(0,0,0,0.03);
    }

    .nav-wrapper {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 68px;
      gap: 16px;
    }

    .nav-logo {
      font-size: 1.35rem;
      font-weight: 700;
      letter-spacing: -0.01em;
      color: var(--color-primary);
      text-decoration: none;
      white-space: nowrap;
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-logo-mark {
      width: 32px;
      height: 32px;
      border-radius: 50%;
      background: var(--color-primary);
      color: var(--color-accent);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 800;
      font-size: 0.9rem;
      flex-shrink: 0;
    }

    .nav-links-desktop {
      display: flex;
      align-items: center;
      gap: 28px;
    }
    .nav-links-desktop a {
      font-size: 0.95rem;
      font-weight: 500;
      color: var(--color-text-secondary);
      text-decoration: none;
      padding: 6px 2px;
      border-bottom: 2px solid transparent;
      transition: color var(--transition-base), border-color var(--transition-base);
      white-space: nowrap;
    }
    .nav-links-desktop a:hover {
      color: var(--color-primary);
      border-bottom-color: var(--color-accent);
    }
    .nav-links-desktop a.nav-active {
      color: var(--color-primary);
      border-bottom-color: var(--color-accent);
      font-weight: 600;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      background: var(--color-primary);
      color: #fff;
      padding: 10px 20px;
      border-radius: 999px;
      font-size: 0.9rem;
      font-weight: 600;
      text-decoration: none;
      transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
      white-space: nowrap;
    }
    .nav-cta:hover {
      background: var(--color-primary-deep);
      transform: translateY(-1px);
      box-shadow: 0 8px 20px rgba(23,51,43,0.18);
      color: #fff;
    }
    .nav-cta:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: 1px solid var(--color-border);
      border-radius: 10px;
      width: 42px;
      height: 42px;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      color: var(--color-primary);
      transition: background var(--transition-base);
    }
    .nav-toggle:hover {
      background: var(--color-bg-cool);
    }
    .nav-toggle:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 2px;
    }

    .mobile-menu {
      display: none;
      flex-direction: column;
      background: #fff;
      border-bottom: 1px solid var(--color-border);
      padding: 16px 24px 24px;
      gap: 8px;
      box-shadow: 0 16px 32px rgba(0,0,0,0.06);
    }
    .mobile-menu a {
      font-size: 1rem;
      font-weight: 500;
      color: var(--color-text);
      text-decoration: none;
      padding: 10px 0;
      border-bottom: 1px solid var(--color-border);
      transition: color var(--transition-base), padding-left var(--transition-base);
    }
    .mobile-menu a:hover {
      color: var(--color-primary);
      padding-left: 6px;
    }
    .mobile-menu a.nav-active {
      color: var(--color-primary);
      font-weight: 700;
    }
    .mobile-menu .mobile-cta {
      margin-top: 12px;
      background: var(--color-primary);
      color: #fff;
      text-align: center;
      padding: 14px 20px;
      border-radius: 999px;
      font-weight: 600;
      text-decoration: none;
    }
    .mobile-menu .mobile-cta:hover {
      background: var(--color-primary-deep);
      color: #fff;
    }

    /* Breadcrumb */
    .breadcrumb {
      font-size: 0.9rem;
      color: var(--color-text-muted);
      margin-bottom: 20px;
    }
    .breadcrumb a {
      color: var(--color-text-secondary);
      text-decoration: none;
    }
    .breadcrumb a:hover {
      color: var(--color-primary);
      text-decoration: underline;
    }
    .breadcrumb span {
      color: var(--color-text-muted);
      margin: 0 6px;
    }

    /* Case Hero */
    .case-hero {
      background: #fff;
      border-bottom: 1px solid var(--color-border);
      padding: 40px 0 56px;
    }
    .case-hero-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 40px;
      align-items: center;
    }
    .case-hero-copy h1 {
      font-size: 2.5rem;
      line-height: 1.2;
      font-weight: 700;
      color: var(--color-primary);
      letter-spacing: -0.02em;
      margin-bottom: 16px;
    }
    .case-hero-copy .hero-desc {
      font-size: 1.05rem;
      color: var(--color-text-secondary);
      line-height: 1.8;
      margin-bottom: 28px;
      max-width: 540px;
    }
    .hero-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
    }
    .hero-compare-card {
      background: var(--color-bg);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow-card);
    }
    .compare-label {
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--color-primary);
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 14px;
      display: block;
    }
    .compare-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 10px;
      flex-wrap: wrap;
    }
    .compare-row > div {
      flex: 1;
      min-width: 90px;
    }
    .compare-row strong {
      display: block;
      font-size: 0.95rem;
      color: var(--color-text);
      margin-bottom: 8px;
    }
    .compare-row span {
      display: block;
      font-size: 0.9rem;
      color: var(--color-text-secondary);
      background: #fff;
      border: 1px solid var(--color-border);
      padding: 6px 10px;
      border-radius: 8px;
      margin-bottom: 5px;
    }
    .compare-arrow {
      font-size: 1.5rem;
      color: var(--color-accent-amber);
      font-weight: 700;
      min-width: 30px;
      text-align: center;
    }
    .compare-note {
      margin-top: 14px;
      font-size: 0.8rem;
      color: var(--color-text-muted);
      border-top: 1px dashed var(--color-border);
      padding-top: 12px;
    }

    /* Case Intro */
    .case-intro {
      background: var(--color-bg);
      padding: 40px 0;
      border-bottom: 1px solid var(--color-border);
    }
    .case-intro-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 24px;
    }
    .case-intro-card {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 24px;
      box-shadow: var(--shadow-card);
    }
    .case-intro-card h3 {
      font-size: 1.15rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 10px;
    }
    .case-intro-card p {
      font-size: 0.95rem;
      color: var(--color-text-secondary);
      line-height: 1.75;
    }

    /* Case Cards */
    .case-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .case-card {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-card);
      transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
      display: flex;
      flex-direction: column;
    }
    .case-card:hover {
      box-shadow: var(--shadow-card-hover);
      border-color: #c9d2ca;
      transform: translateY(-2px);
    }
    .case-card-cover {
      width: 100%;
      aspect-ratio: 16/9;
      object-fit: cover;
      background: #e9ede9;
    }
    .case-card-body {
      padding: 20px;
      display: flex;
      flex-direction: column;
      gap: 12px;
      flex: 1;
    }
    .case-card-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      flex-wrap: wrap;
    }
    .case-card h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.4;
      margin: 0;
    }
    .case-card p {
      font-size: 0.93rem;
      color: var(--color-text-secondary);
      line-height: 1.7;
      margin: 0;
    }
    .case-metrics {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      border-top: 1px dashed var(--color-border);
      padding-top: 12px;
      margin-top: auto;
    }
    .case-metric {
      flex: 1;
      min-width: 80px;
      background: var(--color-bg-cool);
      border-radius: 8px;
      padding: 8px 10px;
    }
    .case-metric small {
      display: block;
      font-size: 0.7rem;
      color: var(--color-text-muted);
      text-transform: uppercase;
      letter-spacing: 0.02em;
    }
    .case-metric strong {
      font-size: 1rem;
      color: var(--color-primary);
    }

    /* Timeline */
    .timeline {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
      position: relative;
    }
    .timeline::before {
      content: "";
      position: absolute;
      top: 24px;
      left: 5%;
      right: 5%;
      height: 2px;
      background: var(--color-border);
      z-index: 0;
    }
    .timeline-step {
      position: relative;
      z-index: 1;
      text-align: center;
      padding: 0 8px;
    }
    .timeline-dot {
      width: 48px;
      height: 48px;
      border-radius: 50%;
      background: #fff;
      border: 2px solid var(--color-primary);
      color: var(--color-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      font-size: 1rem;
      margin: 0 auto 14px;
      box-shadow: 0 2px 10px rgba(0,0,0,0.06);
    }
    .timeline-step h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 6px;
    }
    .timeline-step p {
      font-size: 0.85rem;
      color: var(--color-text-secondary);
      line-height: 1.6;
    }

    /* Rank list */
    .rank-grid {
      display: grid;
      grid-template-columns: 1.4fr 0.8fr;
      gap: 28px;
      align-items: start;
    }
    .rank-list {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }
    .rank-item {
      display: flex;
      align-items: center;
      gap: 14px;
      padding: 16px 20px;
      border-bottom: 1px solid var(--color-border);
      transition: background var(--transition-base);
    }
    .rank-item:last-child {
      border-bottom: none;
    }
    .rank-item:hover {
      background: var(--color-bg-cool);
    }
    .rank-number {
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--color-bg);
      color: var(--color-primary);
      font-weight: 700;
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .rank-item:nth-child(1) .rank-number {
      background: var(--color-accent-amber);
      color: #fff;
    }
    .rank-item:nth-child(2) .rank-number {
      background: #D8E3D5;
      color: var(--color-primary);
    }
    .rank-item:nth-child(3) .rank-number {
      background: #F3D9CF;
      color: var(--color-primary);
    }
    .rank-content {
      flex: 1;
    }
    .rank-content h4 {
      font-size: 0.98rem;
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: 4px;
    }
    .rank-content p {
      font-size: 0.82rem;
      color: var(--color-text-muted);
      margin: 0;
    }
    .rank-meta {
      font-size: 0.8rem;
      color: var(--color-text-muted);
      white-space: nowrap;
    }

    /* Filter / tag cloud */
    .filter-panel {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow-card);
      padding: 24px;
    }
    .filter-panel h3 {
      font-size: 1.1rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 14px;
    }
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
    }
    .tag-cloud a,
    .tag-cloud span {
      font-size: 0.82rem;
      padding: 6px 12px;
      border-radius: 999px;
      background: var(--color-bg-cool);
      color: var(--color-text-secondary);
      text-decoration: none;
      transition: background var(--transition-base), color var(--transition-base);
    }
    .tag-cloud a:hover {
      background: var(--color-primary);
      color: #fff;
    }

    /* Metrics strip */
    .metric-strip {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 20px;
    }
    .metric-item {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 22px;
      text-align: center;
      box-shadow: var(--shadow-card);
    }
    .metric-item strong {
      font-size: 2rem;
      line-height: 1.2;
      color: var(--color-primary);
      display: block;
      margin-bottom: 4px;
    }
    .metric-item span {
      font-size: 0.88rem;
      color: var(--color-text-secondary);
    }

    /* Related */
    .related-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .related-card {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-md);
      padding: 18px;
      transition: box-shadow var(--transition-base), border-color var(--transition-base);
    }
    .related-card:hover {
      box-shadow: var(--shadow-card-hover);
      border-color: #c9d2ca;
    }
    .related-card h4 {
      font-size: 1rem;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 6px;
    }
    .related-card p {
      font-size: 0.85rem;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin: 0;
    }

    /* FAQ */
    .faq-list {
      max-width: 760px;
      margin: 0 auto;
    }
    .faq-item {
      background: #fff;
      border: 1px solid var(--color-border);
      border-radius: var(--radius-sm);
      margin-bottom: 12px;
      box-shadow: var(--shadow-card);
      overflow: hidden;
      transition: border-color var(--transition-base), box-shadow var(--transition-base);
    }
    .faq-item:hover {
      border-color: #c9d2ca;
    }
    .faq-item summary {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      cursor: pointer;
      font-weight: 600;
      color: var(--color-primary);
      font-size: 1rem;
      list-style: none;
      gap: 16px;
    }
    .faq-item summary::-webkit-details-marker {
      display: none;
    }
    .faq-item summary .faq-icon {
      transition: transform var(--transition-base);
      flex-shrink: 0;
      width: 22px;
      height: 22px;
      position: relative;
    }
    .faq-item summary .faq-icon::before,
    .faq-item summary .faq-icon::after {
      content: "";
      position: absolute;
      background: var(--color-primary);
      border-radius: 2px;
      top: 50%;
      left: 50%;
      transform: translate(-50%, -50%);
    }
    .faq-item summary .faq-icon::before {
      width: 12px;
      height: 2px;
    }
    .faq-item summary .faq-icon::after {
      width: 2px;
      height: 12px;
      transition: transform var(--transition-base);
    }
    .faq-item[open] summary .faq-icon::after {
      transform: translate(-50%, -50%) rotate(90deg);
    }
    .faq-answer {
      padding: 0 20px 18px;
      font-size: 0.95rem;
      color: var(--color-text-secondary);
      line-height: 1.75;
    }

    /* Subscribe */
    .subscribe-box {
      background: var(--color-primary);
      border-radius: var(--radius-lg);
      padding: 48px 32px;
      color: #fff;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
    }
    .subscribe-box h2 {
      font-size: 1.8rem;
      font-weight: 700;
      color: #fff;
      letter-spacing: -0.01em;
      margin-bottom: 10px;
    }
    .subscribe-box p {
      color: rgba(255,255,255,0.85);
      margin-bottom: 0;
    }
    .subscribe-form {
      display: flex;
      gap: 10px;
      flex-wrap: wrap;
    }
    .subscribe-form input[type="email"] {
      flex: 1;
      min-width: 180px;
      padding: 12px 18px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.3);
      background: rgba(255,255,255,0.12);
      color: #fff;
      font-size: 0.95rem;
      outline: none;
      transition: background var(--transition-base), border-color var(--transition-base);
    }
    .subscribe-form input[type="email"]::placeholder {
      color: rgba(255,255,255,0.7);
    }
    .subscribe-form input[type="email"]:focus {
      background: rgba(255,255,255,0.2);
      border-color: var(--color-accent);
    }
    .subscribe-form button {
      background: var(--color-accent);
      color: var(--color-primary);
      padding: 12px 24px;
      border-radius: 999px;
      font-weight: 700;
      font-size: 0.95rem;
      transition: background var(--transition-base), transform var(--transition-base);
    }
    .subscribe-form button:hover {
      background: #B7DF58;
      transform: translateY(-1px);
    }
    .subscribe-form button:focus-visible {
      outline: 2px solid #fff;
      outline-offset: 2px;
    }

    /* Footer */
    .site-footer {
      background: var(--color-primary);
      color: #fff;
      padding: 48px 0 24px;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1fr 1fr;
      gap: 32px;
      margin-bottom: 32px;
    }
    .footer-brand-name {
      font-size: 1.4rem;
      font-weight: 700;
      margin-bottom: 12px;
    }
    .footer-brand-desc {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.75);
      line-height: 1.7;
    }
    .footer-col-title {
      font-size: 0.85rem;
      font-weight: 700;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      margin-bottom: 14px;
      color: rgba(255,255,255,0.7);
    }
    .footer-col-links a {
      display: block;
      color: rgba(255,255,255,0.85);
      text-decoration: none;
      font-size: 0.9rem;
      margin-bottom: 8px;
      transition: color var(--transition-base), padding-left var(--transition-base);
    }
    .footer-col-links a:hover {
      color: var(--color-accent);
      padding-left: 4px;
    }
    .footer-bottom {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      border-top: 1px solid rgba(255,255,255,0.15);
      padding-top: 20px;
      font-size: 0.78rem;
      color: rgba(255,255,255,0.55);
    }
    .footer-badge-links {
      display: flex;
      gap: 16px;
    }
    .footer-badge-links a {
      color: rgba(255,255,255,0.7);
      text-decoration: none;
    }
    .footer-badge-links a:hover {
      color: var(--color-accent);
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .case-hero-grid {
        grid-template-columns: 1fr;
      }
      .case-intro-grid {
        grid-template-columns: 1fr;
      }
      .timeline {
        grid-template-columns: repeat(2, 1fr);
      }
      .timeline::before {
        display: none;
      }
      .rank-grid {
        grid-template-columns: 1fr;
      }
      .metric-strip {
        grid-template-columns: repeat(2, 1fr);
      }
      .related-grid {
        grid-template-columns: 1fr 1fr;
      }
      .subscribe-box {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .nav-links-desktop,
      .desktop-only {
        display: none;
      }
      .nav-toggle {
        display: flex;
      }
      .mobile-menu.open {
        display: flex;
      }
      .nav-wrapper {
        height: 60px;
      }
      .section {
        padding: 48px 0;
      }
      .case-hero-grid {
        gap: 24px;
      }
      .case-hero-copy h1 {
        font-size: 1.9rem;
      }
      .case-grid {
        grid-template-columns: 1fr;
      }
      .related-grid {
        grid-template-columns: 1fr;
      }
      .metric-strip {
        grid-template-columns: 1fr 1fr;
      }
      .timeline {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 520px) {
      .container-page {
        padding: 0 12px;
      }
      .case-hero-copy h1 {
        font-size: 1.6rem;
      }
      .metric-strip {
        grid-template-columns: 1fr;
      }
      .hero-actions {
        flex-direction: column;
      }
      .btn-primary,
      .btn-secondary {
        width: 100%;
        text-align: center;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .footer-bottom {
        flex-direction: column;
        align-items: flex-start;
      }
    }

/* roulang page: category5 */
:root {
            --color-primary: #17332B;
            --color-primary-deep: #0E241E;
            --color-primary-soft: #1E3A2C;
            --color-accent: #C8F169;
            --color-accent-amber: #E8923A;
            --color-bg: #F6F5F0;
            --color-bg-cool: #F4F7F4;
            --color-card: #FFFFFF;
            --color-card-soft: #FBFBF8;
            --color-text: #18251D;
            --color-text-secondary: #5C6A61;
            --color-text-muted: #8A958D;
            --color-border: #DCE3DC;
            --color-red-earth: #C46A55;
            --radius-sm: 10px;
            --radius-md: 12px;
            --radius-lg: 14px;
            --shadow-card: 0 1px 2px rgba(0,0,0,0.04), 0 8px 24px rgba(0,0,0,0.04);
            --shadow-card-hover: 0 4px 8px rgba(0,0,0,0.06), 0 16px 40px rgba(0,0,0,0.08);
            --transition-base: 200ms ease-in-out;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "Inter", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .container-page {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        @media (max-width: 520px) {
            .container-page {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        header.site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 1px 8px rgba(0,0,0,0.03);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-logo-mark {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-primary);
            color: var(--color-accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .nav-links-desktop a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            text-decoration: none;
            padding: 6px 2px;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-base), border-color var(--transition-base);
            white-space: nowrap;
        }

        .nav-links-desktop a:hover {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
        }

        .nav-links-desktop a.nav-active {
            color: var(--color-primary);
            border-bottom-color: var(--color-accent);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--color-primary);
            color: #fff;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
            white-space: nowrap;
            border: none;
            cursor: pointer;
        }

        .nav-cta:hover {
            background: var(--color-primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23,51,43,0.18);
        }

        .nav-cta:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 10px;
            width: 42px;
            height: 42px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            transition: background var(--transition-base);
        }

        .nav-toggle:hover {
            background: var(--color-bg-cool);
        }

        .nav-toggle:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 2px;
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            background: #fff;
            border-bottom: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            gap: 8px;
            box-shadow: 0 16px 32px rgba(0,0,0,0.06);
        }

        .mobile-menu a {
            font-size: 1rem;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            padding: 10px 0;
            border-bottom: 1px solid var(--color-border);
            transition: color var(--transition-base), padding-left var(--transition-base);
        }

        .mobile-menu a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }

        .mobile-menu a.nav-active {
            color: var(--color-primary);
            font-weight: 700;
        }

        .mobile-menu .mobile-cta {
            margin-top: 12px;
            background: var(--color-primary);
            color: #fff;
            text-align: center;
            padding: 14px 20px;
            border-radius: 999px;
            font-weight: 600;
            text-decoration: none;
        }

        @media (max-width: 768px) {
            .nav-links-desktop {
                display: none;
            }
            .desktop-only {
                display: none !important;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .mobile-menu.open {
                display: flex;
            }
        }

        /* Page hero */
        .page-hero {
            background: linear-gradient(135deg, #F6F5F0 0%, #F4F7F4 55%, #EDF3EE 100%);
            border-bottom: 1px solid var(--color-border);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .page-hero::after {
            content: "28";
            position: absolute;
            right: -20px;
            top: -30px;
            font-size: 180px;
            font-weight: 900;
            color: rgba(23,51,43,0.04);
            line-height: 1;
            pointer-events: none;
            letter-spacing: -0.04em;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--color-text-secondary);
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

        .breadcrumb span.sep {
            color: var(--color-border);
        }

        .page-hero-title {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--color-primary);
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .page-hero-sub {
            font-size: 1.05rem;
            color: var(--color-text-secondary);
            max-width: 760px;
            line-height: 1.75;
        }

        @media (max-width: 640px) {
            .page-hero-title {
                font-size: 1.75rem;
            }
            .page-hero-sub {
                font-size: 0.95rem;
            }
        }

        /* General section */
        .section {
            padding: 64px 0;
        }

        .section-alt {
            background-color: var(--color-bg-cool);
        }

        .section-header {
            margin-bottom: 32px;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--color-primary);
            line-height: 1.3;
            margin-bottom: 8px;
        }

        .section-desc {
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        /* Resource cards */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .resource-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .resource-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-3px);
        }

        .resource-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--color-bg-cool);
            border-bottom: 1px solid var(--color-border);
        }

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

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

        .resource-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .resource-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: rgba(200,241,105,0.22);
            color: var(--color-primary);
            font-size: 0.75rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 999px;
            margin-bottom: 12px;
            width: fit-content;
            white-space: nowrap;
        }

        .resource-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .resource-card-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 16px;
        }

        .resource-meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 16px;
        }

        .resource-actions {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 600;
            text-decoration: none;
            border: 1px solid transparent;
            cursor: pointer;
            transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
        }

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

        .btn-primary:hover {
            background: var(--color-primary-deep);
            transform: translateY(-1px);
            box-shadow: 0 8px 20px rgba(23,51,43,0.15);
        }

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

        .btn-outline:hover {
            background: var(--color-bg-cool);
            border-color: var(--color-primary);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
        }

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

        @media (max-width: 1024px) {
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 640px) {
            .resource-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Archive list */
        .archive-list {
            display: flex;
            flex-direction: column;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--color-card);
            box-shadow: var(--shadow-card);
        }

        .archive-item {
            display: flex;
            align-items: center;
            gap: 20px;
            padding: 18px 24px;
            border-bottom: 1px solid var(--color-border);
            transition: background var(--transition-base);
        }

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

        .archive-item:hover {
            background: var(--color-card-soft);
        }

        .archive-date {
            min-width: 90px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .archive-content {
            flex: 1;
        }

        .archive-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .archive-summary {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }

        .archive-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            white-space: nowrap;
            transition: color var(--transition-base);
        }

        .archive-link:hover {
            color: var(--color-accent-amber);
        }

        @media (max-width: 640px) {
            .archive-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
                padding: 16px;
            }
            .archive-date {
                min-width: auto;
            }
            .archive-link {
                align-self: flex-start;
            }
        }

        /* Changelog timeline */
        .changelog-timeline {
            position: relative;
            padding-left: 28px;
            border-left: 2px solid var(--color-border);
            margin-left: 8px;
        }

        .timeline-item {
            position: relative;
            padding: 0 0 28px 20px;
        }

        .timeline-item:last-child {
            padding-bottom: 0;
        }

        .timeline-item::before {
            content: "";
            position: absolute;
            left: -34px;
            top: 6px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--color-accent);
            border: 2px solid var(--color-primary);
        }

        .timeline-date {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--color-accent-amber);
            margin-bottom: 4px;
        }

        .timeline-title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }

        .timeline-desc {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* Ranking list */
        .ranking-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .ranking-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            box-shadow: var(--shadow-card);
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .ranking-item:hover {
            border-color: var(--color-primary-soft);
            box-shadow: var(--shadow-card-hover);
        }

        .ranking-number {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--color-bg-cool);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .ranking-item:first-child .ranking-number {
            background: var(--color-primary);
            color: var(--color-accent);
        }

        .ranking-content {
            flex: 1;
        }

        .ranking-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 2px;
        }

        .ranking-desc {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        .ranking-hot {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent-amber);
            white-space: nowrap;
        }

        @media (max-width: 640px) {
            .ranking-item {
                gap: 10px;
                padding: 12px;
            }
            .ranking-number {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
        }

        /* Term grid */
        .term-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .term-card {
            background: var(--color-card-soft);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .term-card:hover {
            border-color: var(--color-primary-soft);
            box-shadow: var(--shadow-card);
        }

        .term-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .term-card p {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        @media (max-width: 1024px) {
            .term-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .term-grid {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

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

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 20px;
            cursor: pointer;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            list-style: none;
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary::after {
            content: "+";
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(45deg);
            color: var(--color-accent-amber);
        }

        .faq-answer {
            padding: 0 20px 18px;
            font-size: 0.95rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* Subscribe CTA */
        .subscribe-panel {
            background: var(--color-primary);
            border-radius: var(--radius-lg);
            padding: 48px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .subscribe-panel::before {
            content: "28";
            position: absolute;
            right: 20px;
            bottom: -40px;
            font-size: 180px;
            font-weight: 900;
            color: rgba(255,255,255,0.06);
            line-height: 1;
            pointer-events: none;
        }

        .subscribe-title {
            font-size: 1.75rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .subscribe-desc {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.85);
            max-width: 600px;
            margin-bottom: 24px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        .subscribe-form {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            position: relative;
            z-index: 1;
        }

        .subscribe-form input {
            flex: 1 1 220px;
            padding: 12px 18px;
            border-radius: 10px;
            border: 1px solid rgba(255,255,255,0.2);
            background: rgba(255,255,255,0.1);
            color: #fff;
            font-size: 0.95rem;
            outline: none;
            transition: border-color var(--transition-base), background var(--transition-base);
        }

        .subscribe-form input::placeholder {
            color: rgba(255,255,255,0.6);
        }

        .subscribe-form input:focus {
            border-color: var(--color-accent);
            background: rgba(255,255,255,0.15);
        }

        .subscribe-form .btn-light {
            background: var(--color-accent);
            color: var(--color-primary-deep);
            font-weight: 700;
            padding: 12px 28px;
        }

        .subscribe-form .btn-light:hover {
            background: #ddfa9b;
            transform: translateY(-1px);
        }

        .subscribe-form .btn-light:focus-visible {
            outline: 2px solid #fff;
            outline-offset: 2px;
        }

        .subscribe-success {
            margin-top: 16px;
            font-size: 0.9rem;
            color: var(--color-accent);
            position: relative;
            z-index: 1;
            min-height: 24px;
        }

        @media (max-width: 640px) {
            .subscribe-panel {
                padding: 32px 24px;
            }
            .subscribe-title {
                font-size: 1.45rem;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                flex: 1 1 auto;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--color-primary-deep);
            color: rgba(255,255,255,0.75);
            padding: 56px 0 0;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer-brand-name {
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .footer-brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.7);
            max-width: 320px;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col-links a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.7);
            text-decoration: none;
            transition: color var(--transition-base);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 24px 0;
            font-size: 0.8rem;
            color: rgba(255,255,255,0.55);
        }

        .footer-badge-links {
            display: flex;
            gap: 16px;
        }

        .footer-badge-links a {
            color: rgba(255,255,255,0.55);
            text-decoration: none;
            transition: color var(--transition-base);
        }

        .footer-badge-links a:hover {
            color: var(--color-accent);
        }

        @media (max-width: 768px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }