/* roulang page: index */
:root {
            --primary: #3d6b5c;
            --primary-dark: #2c5045;
            --primary-light: #5a8a78;
            --accent: #b8865a;
            --accent-soft: #d4b896;
            --bg: #faf8f4;
            --surface: #ffffff;
            --surface-warm: #f5f1ea;
            --text: #2d2a24;
            --text-strong: #1f1d18;
            --muted: #7a756c;
            --muted-light: #a8a298;
            --border: rgba(0, 0, 0, 0.07);
            --border-strong: rgba(61, 107, 92, 0.2);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height-top: 64px;
            --header-height-nav: 44px;
            --header-height-total: calc(var(--header-height-top) + var(--header-height-nav));
            --header-height-scrolled: 58px;
        }

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

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

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }

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

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        @media (min-width: 1024px) {
            .container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        ::selection {
            background-color: rgba(61, 107, 92, 0.25);
            color: var(--text-strong);
        }

        :focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }

        .site-header .top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height-top);
            padding: 0 1.25rem;
            transition: height var(--transition-base), opacity var(--transition-base);
            overflow: hidden;
            max-width: var(--max-width);
            margin: 0 auto;
        }

        .site-header .logo-link {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--text-strong);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .site-header .logo-link .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .site-header .top-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .site-header .search-trigger {
            display: none;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            color: var(--muted);
            font-size: 0.86rem;
            background: var(--bg);
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }

        .site-header .search-trigger:hover {
            border-color: var(--border-strong);
            background: var(--surface-warm);
            color: var(--text);
        }

        @media (min-width: 768px) {
            .site-header .search-trigger {
                display: flex;
            }
        }

        .site-header .nav-row {
            display: flex;
            align-items: center;
            height: var(--header-height-nav);
            border-top: 1px solid var(--border);
            padding: 0 1.25rem;
            max-width: var(--max-width);
            margin: 0 auto;
            transition: height var(--transition-base), border-color var(--transition-base);
        }

        .site-header .nav-row .nav-links {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            height: 100%;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .site-header .nav-row .nav-links::-webkit-scrollbar {
            display: none;
        }

        .site-header .nav-links a {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--muted);
            padding: 0.25rem 0.35rem;
            border-bottom: 2px solid transparent;
            transition: color var(--transition-fast), border-color var(--transition-fast);
            white-space: nowrap;
            position: relative;
        }

        .site-header .nav-links a:hover {
            color: var(--text-strong);
        }

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

        .site-header .hamburger {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text);
            font-size: 1.1rem;
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }

        .site-header .hamburger:hover {
            background: var(--surface-warm);
            border-color: var(--border-strong);
        }

        @media (max-width: 767px) {
            .site-header .nav-row {
                display: none;
            }

            .site-header .top-row {
                height: 60px;
            }

            .site-header .logo-link {
                font-size: 1.2rem;
            }

            .site-header .logo-link .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.95rem;
                border-radius: 8px;
            }

            .site-header .hamburger {
                display: flex;
            }
        }

        @media (min-width: 768px) {
            .site-header .hamburger {
                display: none;
            }
        }

        /* Scrolled state */
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
        }

        .site-header.scrolled .top-row {
            height: 0;
            opacity: 0;
            padding: 0 2rem;
        }

        .site-header.scrolled .nav-row {
            height: var(--header-height-scrolled);
            border-top: none;
        }

        .site-header.scrolled .nav-links a {
            font-size: 0.88rem;
        }

        /* Mobile menu overlay */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 60px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--surface);
            z-index: 99;
            padding: 1.5rem 1.25rem;
            overflow-y: auto;
            border-top: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
        }

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

        .mobile-menu .mobile-nav-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .mobile-menu .mobile-nav-links a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.9rem 1rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            background: var(--surface-warm);
            border: 1px solid var(--border);
            transition: background var(--transition-fast), border-color var(--transition-fast);
        }

        .mobile-menu .mobile-nav-links a:hover {
            background: #ede8df;
            border-color: var(--border-strong);
        }

        .mobile-menu .mobile-nav-links a.active {
            color: var(--primary);
            border-color: var(--border-strong);
            background: rgba(61, 107, 92, 0.06);
            font-weight: 600;
        }

        /* ========== Main spacing ========== */
        main {
            padding-top: var(--header-height-total);
            transition: padding-top var(--transition-base);
        }

        .site-header.scrolled~main {
            padding-top: var(--header-height-scrolled);
        }

        @media (max-width: 767px) {
            main {
                padding-top: 60px;
            }
        }

        section {
            padding: 3.5rem 0;
        }

        @media (min-width: 768px) {
            section {
                padding: 5rem 0;
            }
        }

        .section-alt {
            background: var(--surface-warm);
        }

        .section-dark {
            background: var(--primary-dark);
            color: #f0ede6;
        }

        .section-label {
            display: inline-block;
            padding: 0.35rem 0.9rem;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--primary);
            background: rgba(61, 107, 92, 0.08);
            border: 1px solid rgba(61, 107, 92, 0.15);
            margin-bottom: 1rem;
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.3;
            letter-spacing: -0.01em;
            margin-bottom: 1rem;
        }

        @media (min-width: 768px) {
            .section-title {
                font-size: 2.2rem;
            }
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--muted);
            line-height: 1.8;
            max-width: 720px;
            margin-bottom: 2rem;
        }

        .section-desc strong {
            color: var(--text);
            font-weight: 600;
        }

        @media (min-width: 768px) {
            .section-desc {
                font-size: 1.08rem;
            }
        }

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            letter-spacing: 0.01em;
            transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
            text-align: center;
            border: 1px solid transparent;
        }

        .btn:active {
            transform: translateY(1px);
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(61, 107, 92, 0.3);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            box-shadow: 0 0 0 4px rgba(61, 107, 92, 0.2);
        }

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

        .btn-secondary:hover {
            background: rgba(61, 107, 92, 0.06);
            border-color: var(--primary);
            color: var(--primary-dark);
        }

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

        .btn-accent:hover {
            background: #a06e48;
            border-color: #a06e48;
            color: #fff;
            box-shadow: 0 4px 16px rgba(184, 134, 90, 0.3);
        }

        .btn-sm {
            padding: 0.5rem 1.1rem;
            font-size: 0.86rem;
            border-radius: 0.4rem;
        }

        .btn-lg {
            padding: 0.85rem 2rem;
            font-size: 1.05rem;
            border-radius: 0.6rem;
        }

        /* ========== Cards ========== */
        .card {
            background: var(--surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-strong);
            transform: translateY(-2px);
        }

        .card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--surface-warm);
        }

        .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .card:hover .card-image img {
            transform: scale(1.04);
        }

        .card-body {
            padding: 1.25rem 1.5rem 1.5rem;
        }

        .card-tag {
            display: inline-block;
            padding: 0.2rem 0.7rem;
            border-radius: 999px;
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            background: rgba(61, 107, 92, 0.07);
            color: var(--primary);
            margin-bottom: 0.7rem;
        }

        .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.4;
            margin-bottom: 0.6rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-excerpt {
            font-size: 0.92rem;
            color: var(--muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 1rem;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.8rem;
            color: var(--muted-light);
            flex-wrap: wrap;
        }

        .card-meta .meta-divider {
            width: 4px;
            height: 4px;
            border-radius: 50%;
            background: var(--muted-light);
            flex-shrink: 0;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--primary);
            transition: gap var(--transition-fast), color var(--transition-fast);
        }

        .card-link:hover {
            gap: 0.55rem;
            color: var(--primary-dark);
        }

        /* ========== Hero ========== */
        .hero-section {
            padding: 4rem 0 3rem;
            background: var(--surface);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border);
        }

        .hero-section::before {
            content: "";
            position: absolute;
            top: 0;
            right: 0;
            width: 55%;
            height: 100%;
            background: url('/assets/images/9c5eed23a5c3a7ef.webp') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
            z-index: 0;
        }

        .hero-section .container {
            position: relative;
            z-index: 1;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        @media (min-width: 768px) {
            .hero-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
            }
        }

        .hero-content .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.3rem 0.9rem;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            background: rgba(184, 134, 90, 0.1);
            color: var(--accent);
            border: 1px solid rgba(184, 134, 90, 0.2);
            margin-bottom: 1.2rem;
        }

        .hero-content h1 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--text-strong);
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 1.2rem;
        }

        @media (min-width: 768px) {
            .hero-content h1 {
                font-size: 2.75rem;
            }
        }

        @media (min-width: 1024px) {
            .hero-content h1 {
                font-size: 3rem;
            }
        }

        .hero-content .hero-desc {
            font-size: 1.05rem;
            color: var(--muted);
            line-height: 1.85;
            margin-bottom: 1.75rem;
            max-width: 560px;
        }

        .hero-content .hero-desc strong {
            color: var(--text);
            font-weight: 600;
        }

        .hero-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 0.9rem;
            margin-bottom: 1.5rem;
        }

        .hero-params {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 0.75rem;
        }

        @media (min-width: 480px) {
            .hero-params {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        .hero-param-item {
            background: var(--surface-warm);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.8rem 1rem;
            text-align: left;
        }

        .hero-param-item .param-value {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--primary);
            line-height: 1.2;
        }

        .hero-param-item .param-label {
            font-size: 0.78rem;
            color: var(--muted);
            margin-top: 0.2rem;
        }

        .hero-visual {
            background: var(--surface-warm);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            position: relative;
        }

        .hero-visual .visual-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 1rem;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-strong);
        }

        .hero-visual .visual-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--primary);
            background: rgba(61, 107, 92, 0.08);
            padding: 0.25rem 0.7rem;
            border-radius: 999px;
        }

        .hero-visual .visual-chart {
            display: flex;
            align-items: flex-end;
            gap: 0.5rem;
            height: 140px;
            margin-bottom: 1rem;
            padding-bottom: 0.25rem;
            border-bottom: 2px solid var(--surface-warm);
        }

        .hero-visual .chart-bar {
            flex: 1;
            border-radius: 4px 4px 0 0;
            background: linear-gradient(180deg, var(--primary-light) 0%, var(--primary) 100%);
            min-height: 20px;
            transition: opacity var(--transition-fast);
            position: relative;
        }

        .hero-visual .chart-bar:hover {
            opacity: 0.85;
        }

        .hero-visual .chart-bar .bar-tooltip {
            position: absolute;
            bottom: calc(100% + 8px);
            left: 50%;
            transform: translateX(-50%);
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--text-strong);
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 0.2rem 0.5rem;
            border-radius: 4px;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity var(--transition-fast);
        }

        .hero-visual .chart-bar:hover .bar-tooltip {
            opacity: 1;
        }

        .hero-visual .visual-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--muted);
        }

        .hero-visual .visual-footer .dot {
            display: inline-block;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            margin-right: 0.4rem;
        }

        /* ========== Selling points ========== */
        .selling-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .selling-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 2rem;
            }
        }

        .selling-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 2rem 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .selling-item::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

        .selling-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border-strong);
        }

        .selling-item:hover::before {
            opacity: 1;
        }

        .selling-item .selling-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(61, 107, 92, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1.3rem;
            margin-bottom: 1.2rem;
        }

        .selling-item h3 {
            font-size: 1.18rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.7rem;
        }

        .selling-item p {
            font-size: 0.95rem;
            color: var(--muted);
            line-height: 1.75;
        }

        /* ========== Channel matrix ========== */
        .channel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }

        @media (min-width: 768px) {
            .channel-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.5rem;
            }
        }

        .channel-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
            display: block;
            color: var(--text);
        }

        .channel-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-strong);
            transform: translateY(-2px);
            color: var(--text);
        }

        .channel-card .channel-icon {
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.15rem;
            margin-bottom: 1rem;
        }

        .channel-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.5rem;
        }

        .channel-card p {
            font-size: 0.86rem;
            color: var(--muted);
            line-height: 1.65;
        }

        .channel-card .channel-count {
            display: inline-block;
            margin-top: 0.8rem;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--primary);
        }

        /* ========== Hot topics ========== */
        .topics-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .topics-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }

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

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

        .topic-card .topic-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--surface-warm);
        }

        .topic-card .topic-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

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

        .topic-card .topic-body {
            padding: 1.25rem 1.4rem 1.4rem;
        }

        .topic-card .topic-tag {
            display: inline-block;
            font-size: 0.72rem;
            font-weight: 600;
            color: var(--accent);
            background: rgba(184, 134, 90, 0.1);
            padding: 0.2rem 0.65rem;
            border-radius: 999px;
            margin-bottom: 0.7rem;
        }

        .topic-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .topic-card p {
            font-size: 0.88rem;
            color: var(--muted);
            line-height: 1.7;
        }

        /* ========== Metrics / Data ========== */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .metrics-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 2rem;
            }
        }

        .metric-item {
            text-align: center;
            padding: 1.5rem 1rem;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
        }

        .metric-item .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
            letter-spacing: -0.02em;
        }

        .metric-item .metric-value .unit {
            font-size: 1.1rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.7);
            margin-left: 0.25rem;
        }

        .metric-item .metric-label {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 0.5rem;
        }

        /* ========== Testimonials ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .testimonial-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }

        .testimonial-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.75rem;
            box-shadow: var(--shadow-sm);
        }

        .testimonial-card .quote-icon {
            font-size: 1.6rem;
            color: var(--accent-soft);
            margin-bottom: 0.8rem;
            line-height: 1;
        }

        .testimonial-card blockquote {
            font-size: 0.98rem;
            color: var(--text);
            line-height: 1.8;
            margin-bottom: 1.2rem;
            font-style: normal;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 0.7rem;
        }

        .testimonial-card .author-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            flex-shrink: 0;
        }

        .testimonial-card .author-name {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--text-strong);
        }

        .testimonial-card .author-role {
            font-size: 0.78rem;
            color: var(--muted);
            margin-top: 0.1rem;
        }

        /* ========== Brand story ========== */
        .story-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            align-items: center;
        }

        @media (min-width: 768px) {
            .story-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3.5rem;
            }
        }

        .story-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
        }

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

        .story-text h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        .story-text p {
            font-size: 1rem;
            color: var(--muted);
            line-height: 1.85;
            margin-bottom: 1rem;
        }

        .story-text p strong {
            color: var(--text);
            font-weight: 600;
        }

        /* ========== Featured picks ========== */
        .picks-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
        }

        @media (min-width: 768px) {
            .picks-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: 1.75rem;
            }
        }

        .pick-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            transition: box-shadow var(--transition-base), transform var(--transition-base);
        }

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

        .pick-card .pick-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: rgba(61, 107, 92, 0.15);
            line-height: 1;
            margin-bottom: 0.6rem;
        }

        .pick-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.6rem;
        }

        .pick-card p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.7;
            flex-grow: 1;
        }

        /* ========== Assurance ========== */
        .assurance-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.25rem;
        }

        @media (min-width: 768px) {
            .assurance-grid {
                grid-template-columns: repeat(4, 1fr);
                gap: 1.5rem;
            }
        }

        .assurance-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 1.25rem;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
        }

        .assurance-item .assurance-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(61, 107, 92, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .assurance-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.25rem;
        }

        .assurance-item p {
            font-size: 0.82rem;
            color: var(--muted);
            line-height: 1.6;
        }

        /* ========== Contact / Form ========== */
        .contact-section {
            background: var(--primary-dark);
            color: #f0ede6;
            position: relative;
            overflow: hidden;
        }

        .contact-section::before {
            content: "";
            position: absolute;
            top: -50%;
            right: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(ellipse, rgba(61, 107, 92, 0.4) 0%, transparent 70%);
            pointer-events: none;
        }

        .contact-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2.5rem;
            position: relative;
            z-index: 1;
        }

        @media (min-width: 768px) {
            .contact-grid {
                grid-template-columns: 1fr 1fr;
                gap: 3rem;
                align-items: center;
            }
        }

        .contact-info h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 1rem;
        }

        .contact-info p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.8;
            margin-bottom: 1.2rem;
        }

        .contact-form {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
            padding: 2rem;
            backdrop-filter: blur(10px);
        }

        .contact-form .form-group {
            margin-bottom: 1.25rem;
        }

        .contact-form label {
            display: block;
            font-size: 0.86rem;
            font-weight: 600;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 0.45rem;
        }

        .contact-form input,
        .contact-form textarea {
            width: 100%;
            padding: 0.7rem 0.9rem;
            border-radius: var(--radius-sm);
            border: 1px solid rgba(255, 255, 255, 0.2);
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 0.95rem;
            transition: border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
        }

        .contact-form input::placeholder,
        .contact-form textarea::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }

        .contact-form input:focus,
        .contact-form textarea:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.12);
            outline: none;
            box-shadow: 0 0 0 3px rgba(184, 134, 90, 0.25);
        }

        .contact-form textarea {
            min-height: 120px;
            resize: vertical;
        }

        .contact-form .btn-submit {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 0.75rem 1.8rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 600;
            transition: background var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast);
            width: 100%;
        }

        .contact-form .btn-submit:hover {
            background: #a06e48;
            border-color: #a06e48;
            box-shadow: 0 4px 16px rgba(184, 134, 90, 0.35);
        }

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

        .contact-form .btn-submit:disabled {
            background: rgba(255, 255, 255, 0.2);
            border-color: rgba(255, 255, 255, 0.2);
            cursor: not-allowed;
            box-shadow: none;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1f1d18;
            color: rgba(255, 255, 255, 0.7);
            padding: 3.5rem 0 1.5rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        @media (min-width: 768px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 2rem;
            }
        }

        .footer-brand .footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 0.8rem;
        }

        .footer-brand .footer-logo .logo-icon-sm {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.85rem;
        }

        .footer-brand p {
            font-size: 0.88rem;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.55);
            margin-bottom: 1rem;
        }

        .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
        }

        .footer-column ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.55rem;
        }

        .footer-column ul a {
            font-size: 0.86rem;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }

        .footer-column ul a:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.5rem;
            display: flex;
            flex-direction: column;
            gap: 0.6rem;
            align-items: center;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }

        @media (min-width: 768px) {
            .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                text-align: left;
            }
        }

        /* ========== CMS empty state ========== */
        .cms-empty {
            background: var(--surface-warm);
            border: 1px dashed var(--border-strong);
            border-radius: var(--radius-md);
            padding: 2.5rem 1.5rem;
            text-align: center;
            color: var(--muted);
            font-size: 0.95rem;
        }

        /* ========== Responsive refinements ========== */
        @media (max-width: 767px) {
            .hero-content h1 {
                font-size: 1.7rem;
            }

            .hero-visual .visual-chart {
                height: 100px;
            }

            section {
                padding: 2.75rem 0;
            }

            .section-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-param-item .param-value {
                font-size: 1.15rem;
            }

            .hero-param-item .param-label {
                font-size: 0.7rem;
            }

            .channel-grid {
                grid-template-columns: 1fr;
            }

            .assurance-grid {
                grid-template-columns: 1fr;
            }

            .contact-form {
                padding: 1.5rem;
            }
        }

        /* ========== Smooth scroll offset for anchors ========== */
        section[id] {
            scroll-margin-top: calc(var(--header-height-scrolled) + 20px);
        }

        @media (max-width: 767px) {
            section[id] {
                scroll-margin-top: 70px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #3d6b5c;
            --primary-dark: #2c5045;
            --primary-light: #5a8a78;
            --accent: #b8865a;
            --accent-soft: #d4b896;
            --bg: #faf8f4;
            --surface: #ffffff;
            --surface-warm: #f5f1ea;
            --text: #2d2a24;
            --text-strong: #1f1d18;
            --muted: #7a756c;
            --muted-light: #a8a298;
            --border: rgba(0, 0, 0, 0.07);
            --border-strong: rgba(61, 107, 92, 0.2);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height-top: 64px;
            --header-height-nav: 44px;
            --header-height-total: calc(var(--header-height-top) + var(--header-height-nav));
            --header-height-scrolled: 58px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height-total);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:visited {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }
        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .site-header .top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height-top);
            padding: 0 1.25rem;
            transition: height var(--transition-base), opacity var(--transition-base);
            overflow: hidden;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .site-header .logo-link {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--text-strong);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .site-header .logo-link .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .site-header .top-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .site-header .search-trigger {
            display: none;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            color: var(--muted);
            font-size: 0.86rem;
            background: var(--bg);
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .site-header .search-trigger:hover {
            border-color: var(--border-strong);
            background: var(--surface-warm);
            color: var(--text);
        }
        @media (min-width: 768px) {
            .site-header .search-trigger {
                display: flex;
            }
        }
        .site-header .nav-row {
            display: flex;
            align-items: center;
            height: var(--header-height-nav);
            border-top: 1px solid var(--border);
            padding: 0 1.25rem;
            max-width: var(--max-width);
            margin: 0 auto;
            transition: height var(--transition-base), border-color var(--transition-base);
        }
        .site-header .nav-row .nav-links {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            height: 100%;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .site-header .nav-row .nav-links::-webkit-scrollbar {
            display: none;
        }
        .site-header .nav-row .nav-links a {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--muted);
            white-space: nowrap;
            padding: 0.4rem 0.7rem;
            border-radius: var(--radius-sm);
            transition: color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
        }
        .site-header .nav-row .nav-links a:hover {
            color: var(--primary);
            background: var(--surface-warm);
        }
        .site-header .nav-row .nav-links a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .site-header .nav-row .nav-links a.active i {
            color: #fff;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-color: var(--border-strong);
        }
        .site-header.scrolled .top-row {
            height: 0;
            opacity: 0;
            padding-top: 0;
            padding-bottom: 0;
            overflow: hidden;
        }
        .site-header.scrolled .nav-row {
            height: var(--header-height-scrolled);
            border-top: none;
        }
        /* Mobile hamburger */
        .mobile-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            color: var(--text);
            background: var(--surface);
            transition: border-color var(--transition-fast), color var(--transition-fast);
        }
        .mobile-toggle:hover {
            border-color: var(--border-strong);
            color: var(--primary);
        }
        @media (min-width: 768px) {
            .mobile-toggle {
                display: none;
            }
        }
        .mobile-nav {
            display: none;
            flex-direction: column;
            background: var(--surface);
            border-top: 1px solid var(--border);
            padding: 0.75rem 1.25rem 1rem;
        }
        .mobile-nav a {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.7rem 0.5rem;
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav a:last-child {
            border-bottom: none;
        }
        .mobile-nav a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .mobile-nav.open {
            display: flex;
        }
        @media (max-width: 767px) {
            .site-header .nav-row {
                display: none;
            }
            body {
                padding-top: var(--header-height-top);
            }
            .site-header.scrolled .top-row {
                height: var(--header-height-scrolled);
                opacity: 1;
            }
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            flex-wrap: wrap;
            font-size: 0.82rem;
            color: var(--muted);
            padding: 1.2rem 0 0.2rem;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--muted-light);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        /* ========== Category Header ========== */
        .category-header {
            padding: 2.5rem 0 1.8rem;
            position: relative;
        }
        .category-header .header-content {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.8rem;
            align-items: center;
        }
        @media (min-width: 768px) {
            .category-header .header-content {
                grid-template-columns: 1.2fr 0.8fr;
                gap: 2.5rem;
            }
        }
        .category-header .title-area .eyebrow {
            display: inline-block;
            padding: 0.25rem 0.8rem;
            background: var(--surface-warm);
            border: 1px solid var(--border-strong);
            border-radius: 2rem;
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--primary);
            text-transform: uppercase;
            margin-bottom: 0.9rem;
        }
        .category-header h1 {
            font-size: 2.1rem;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            margin-bottom: 0.8rem;
        }
        .category-header h1 .accent {
            color: var(--accent);
        }
        .category-header .subtitle {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--muted);
            max-width: 36rem;
            margin-bottom: 1.4rem;
        }
        .category-header .header-image {
            width: 100%;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4/3;
            background: var(--surface-warm);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .category-header .header-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* ========== Section ========== */
        .section {
            padding: 2.5rem 0;
            border-bottom: 1px solid var(--border);
        }
        .section:last-of-type {
            border-bottom: none;
        }
        .section-heading {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            margin-bottom: 1.6rem;
        }
        .section-heading h2 {
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--text-strong);
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-heading .section-note {
            font-size: 0.85rem;
            color: var(--muted);
        }

        /* ========== Category Cards ========== */
        .category-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.2rem;
        }
        @media (min-width: 640px) {
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (min-width: 1024px) {
            .category-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .category-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border-strong);
        }
        .category-card .card-image {
            aspect-ratio: 16/10;
            overflow: hidden;
            background: var(--surface-warm);
        }
        .category-card .card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .category-card:hover .card-image img {
            transform: scale(1.03);
        }
        .category-card .card-body {
            padding: 1.1rem 1.1rem 1.2rem;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--accent);
            background: var(--surface-warm);
            padding: 0.2rem 0.6rem;
            border-radius: 1rem;
            margin-bottom: 0.6rem;
            width: fit-content;
        }
        .category-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            line-height: 1.4;
            margin-bottom: 0.5rem;
        }
        .category-card p {
            font-size: 0.86rem;
            color: var(--muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 0.8rem;
        }
        .category-card .card-link {
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: color var(--transition-fast);
        }
        .category-card .card-link:hover {
            color: var(--primary-dark);
        }

        /* ========== Filter Pills ========== */
        .filter-pills {
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            margin-bottom: 1.5rem;
        }
        .filter-pills .pill {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.45rem 1rem;
            border-radius: 2rem;
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--muted);
            font-size: 0.84rem;
            font-weight: 500;
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
        }
        .filter-pills .pill:hover {
            border-color: var(--border-strong);
            background: var(--surface-warm);
            color: var(--text);
        }
        .filter-pills .pill.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
        }

        /* ========== Scenario List ========== */
        .scenario-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }
        @media (min-width: 768px) {
            .scenario-list {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        .scenario-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.3rem 1.3rem 1.4rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .scenario-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border-strong);
        }
        .scenario-item .scenario-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-sm);
            background: var(--surface-warm);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 0.8rem;
        }
        .scenario-item h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.4rem;
        }
        .scenario-item p {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.65;
        }

        /* ========== Process List ========== */
        .process-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1rem;
        }
        @media (min-width: 768px) {
            .process-list {
                grid-template-columns: repeat(4, 1fr);
            }
        }
        .process-step {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 1.2rem 1.2rem 1.3rem;
            position: relative;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .process-step:hover {
            border-color: var(--border-strong);
            box-shadow: var(--shadow-sm);
        }
        .process-step .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 0.9rem;
            margin-bottom: 0.7rem;
        }
        .process-step h3 {
            font-size: 0.98rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 0.3rem;
        }
        .process-step p {
            font-size: 0.84rem;
            color: var(--muted);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
        }
        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--border-strong);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.2rem;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-strong);
            font-size: 0.96rem;
            transition: background var(--transition-fast);
            user-select: none;
        }
        .faq-question:hover {
            background: var(--surface-warm);
        }
        .faq-question .faq-arrow {
            color: var(--muted);
            transition: transform var(--transition-base);
            font-size: 0.8rem;
        }
        .faq-item.open .faq-question .faq-arrow {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
            padding: 0 1.2rem;
            color: var(--muted);
            font-size: 0.9rem;
            line-height: 1.7;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }
        .faq-answer p {
            margin: 0;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 60%, var(--primary-light) 100%);
            color: #fff;
            padding: 2.2rem 0;
            border-radius: var(--radius-lg);
            margin: 2rem 0;
        }
        .cta-section .cta-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 1rem;
        }
        .cta-section h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.85);
            max-width: 28rem;
        }
        .cta-button {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.7rem 1.6rem;
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.95rem;
            transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
            box-shadow: var(--shadow-sm);
        }
        .cta-button:hover {
            background: var(--surface-warm);
            transform: translateY(-1px);
            box-shadow: var(--shadow-md);
            color: var(--primary-dark);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1f1d18;
            color: rgba(255,255,255,0.75);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
            border-top: 1px solid rgba(255,255,255,0.08);
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 2rem;
            margin-bottom: 2rem;
        }
        @media (min-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 1.3fr 1fr 1fr 1fr;
                gap: 1.8rem;
            }
        }
        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .site-footer .footer-brand .logo-icon-sm {
            width: 34px;
            height: 34px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
        }
        .site-footer .footer-brand p {
            font-size: 0.85rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 20rem;
        }
        .site-footer .footer-column h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.9rem;
            letter-spacing: 0.02em;
        }
        .site-footer .footer-column ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }
        .site-footer .footer-column ul li a {
            color: rgba(255,255,255,0.65);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-column ul li a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 0.7rem;
            padding-top: 1.2rem;
            border-top: 1px solid rgba(255,255,255,0.1);
            font-size: 0.8rem;
            color: rgba(255,255,255,0.55);
        }

        /* ========== Responsive tweaks ========== */
        @media (max-width: 520px) {
            .category-header h1 {
                font-size: 1.7rem;
            }
            .section {
                padding: 1.8rem 0;
            }
            .section-heading h2 {
                font-size: 1.3rem;
            }
            .cta-section h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: article */
:root {
            --primary: #3d6b5c;
            --primary-dark: #2c5045;
            --primary-light: #5a8a78;
            --accent: #b8865a;
            --accent-soft: #d4b896;
            --bg: #faf8f4;
            --surface: #ffffff;
            --surface-warm: #f5f1ea;
            --text: #2d2a24;
            --text-strong: #1f1d18;
            --muted: #7a756c;
            --muted-light: #a8a298;
            --border: rgba(0, 0, 0, 0.07);
            --border-strong: rgba(61, 107, 92, 0.2);
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
            --radius-sm: 0.5rem;
            --radius-md: 0.75rem;
            --radius-lg: 1rem;
            --radius-xl: 1.25rem;
            --transition-fast: 0.18s ease;
            --transition-base: 0.28s ease;
            --transition-slow: 0.4s ease;
            --font-sans: "PingFang SC", "Noto Sans CJK SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
            --max-width: 1200px;
            --header-height-top: 64px;
            --header-height-nav: 44px;
            --header-height-total: calc(var(--header-height-top) + var(--header-height-nav));
            --header-height-scrolled: 58px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--header-height-total);
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:visited {
            color: var(--primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container {
                padding-left: 2.5rem;
                padding-right: 2.5rem;
            }
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition-base), border-color var(--transition-base);
        }
        .site-header .top-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height-top);
            padding: 0 1.25rem;
            transition: height var(--transition-base), opacity var(--transition-base);
            overflow: hidden;
            max-width: var(--max-width);
            margin: 0 auto;
        }
        .site-header .logo-link {
            display: flex;
            align-items: center;
            gap: 0.625rem;
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--text-strong);
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .site-header .logo-link .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }
        .site-header .top-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .site-header .search-trigger {
            display: none;
            align-items: center;
            gap: 0.45rem;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            color: var(--muted);
            font-size: 0.86rem;
            background: var(--bg);
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .site-header .search-trigger:hover {
            border-color: var(--border-strong);
            background: var(--surface-warm);
            color: var(--text);
        }
        @media (min-width: 768px) {
            .site-header .search-trigger {
                display: flex;
            }
        }
        .site-header .menu-toggle {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 1.1rem;
            background: var(--surface);
            transition: border-color var(--transition-fast), background var(--transition-fast);
        }
        .site-header .menu-toggle:hover {
            border-color: var(--border-strong);
            background: var(--surface-warm);
        }
        @media (min-width: 768px) {
            .site-header .menu-toggle {
                display: none;
            }
        }
        .site-header .nav-row {
            display: none;
            align-items: center;
            height: var(--header-height-nav);
            border-top: 1px solid var(--border);
            padding: 0 1.25rem;
            max-width: var(--max-width);
            margin: 0 auto;
            transition: height var(--transition-base), border-color var(--transition-base);
        }
        @media (min-width: 768px) {
            .site-header .nav-row {
                display: flex;
            }
        }
        .site-header .nav-row .nav-links {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            height: 100%;
            overflow-x: auto;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }
        .site-header .nav-row .nav-links::-webkit-scrollbar {
            display: none;
        }
        .site-header .nav-row .nav-links a {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            padding: 0.35rem 0.75rem;
            border-radius: var(--radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text);
            white-space: nowrap;
            transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
            border-left: 3px solid transparent;
        }
        .site-header .nav-row .nav-links a:hover {
            color: var(--primary);
            background: var(--surface-warm);
        }
        .site-header .nav-row .nav-links a.active {
            color: var(--primary);
            background: rgba(61, 107, 92, 0.08);
            border-left-color: var(--primary);
            font-weight: 600;
        }
        .site-header .nav-row .nav-links a i {
            font-size: 0.9rem;
            color: var(--accent);
        }
        /* Scrolled state */
        .site-header.scrolled .top-row {
            height: 0;
            opacity: 0;
            overflow: hidden;
            padding-top: 0;
            padding-bottom: 0;
        }
        .site-header.scrolled .nav-row {
            height: var(--header-height-scrolled);
            border-top: none;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: var(--border-strong);
        }
        @media (max-width: 767px) {
            .site-header.scrolled .top-row {
                height: var(--header-height-scrolled);
                opacity: 1;
                overflow: visible;
                padding: 0 1.25rem;
            }
            .site-header.scrolled .nav-row {
                display: none;
            }
            body {
                padding-top: var(--header-height-scrolled);
            }
        }
        body {
            padding-top: var(--header-height-total);
        }
        @media (max-width: 767px) {
            body {
                padding-top: var(--header-height-top);
            }
        }

        /* Mobile menu */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height-top);
            left: 0;
            right: 0;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            z-index: 99;
            padding: 0.75rem 1.25rem;
            flex-direction: column;
            gap: 0.25rem;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            padding: 0.75rem 0.5rem;
            border-radius: var(--radius-sm);
            font-size: 1rem;
            font-weight: 500;
            color: var(--text);
            display: flex;
            align-items: center;
            gap: 0.6rem;
            border-left: 3px solid transparent;
        }
        .mobile-menu a:hover {
            background: var(--surface-warm);
            color: var(--primary);
        }
        .mobile-menu a.active {
            color: var(--primary);
            border-left-color: var(--primary);
            background: rgba(61, 107, 92, 0.06);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-section {
            background: var(--surface-warm);
            border-bottom: 1px solid var(--border);
            padding: 1.5rem 0 1.25rem;
        }
        .breadcrumb-list {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: var(--muted);
            margin-bottom: 0.6rem;
        }
        .breadcrumb-list a {
            color: var(--primary);
        }
        .breadcrumb-list a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }
        .breadcrumb-list .separator {
            color: var(--muted-light);
            font-size: 0.8rem;
        }
        .breadcrumb-list .current {
            color: var(--text);
            font-weight: 500;
            max-width: 260px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        .breadcrumb-section .column-label {
            font-size: 0.8rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent);
            font-weight: 600;
        }

        /* ========== Article Header ========== */
        .article-header-section {
            padding: 2.5rem 0 1.5rem;
            background: var(--surface);
            border-bottom: 1px solid var(--border);
        }
        .article-header-section h1 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text-strong);
            margin-bottom: 1.25rem;
            letter-spacing: 0.01em;
        }
        @media (min-width: 768px) {
            .article-header-section h1 {
                font-size: 2.35rem;
            }
        }
        @media (min-width: 1024px) {
            .article-header-section h1 {
                font-size: 2.6rem;
            }
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 1rem 1.5rem;
            font-size: 0.9rem;
            color: var(--muted);
        }
        .article-meta-row .meta-item {
            display: flex;
            align-items: center;
            gap: 0.45rem;
        }
        .article-meta-row .meta-item i {
            color: var(--accent);
            font-size: 0.9rem;
        }
        .article-meta-row .category-tag {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 999px;
            background: rgba(61, 107, 92, 0.1);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.82rem;
        }

        /* ========== Article Body ========== */
        .article-body-section {
            padding: 2rem 0 2.5rem;
        }
        .article-body-section .article-cover {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            margin-bottom: 2rem;
        }
        .article-body-section .article-cover img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }
        .article-prose {
            max-width: 760px;
            margin: 0 auto;
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text);
        }
        .article-prose p {
            margin-bottom: 1.4em;
        }
        .article-prose h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-top: 2.2em;
            margin-bottom: 0.9em;
            line-height: 1.35;
            padding-left: 0.75rem;
            border-left: 4px solid var(--primary);
        }
        .article-prose h3 {
            font-size: 1.2rem;
            font-weight: 600;
            color: var(--text-strong);
            margin-top: 1.8em;
            margin-bottom: 0.7em;
        }
        .article-prose ul,
        .article-prose ol {
            margin-bottom: 1.4em;
            padding-left: 1.5rem;
        }
        .article-prose ul li {
            list-style: disc;
            margin-bottom: 0.6em;
        }
        .article-prose ol li {
            list-style: decimal;
            margin-bottom: 0.6em;
        }
        .article-prose blockquote {
            border-left: 4px solid var(--accent);
            background: var(--surface-warm);
            padding: 1rem 1.25rem;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 1.8em 0;
            font-style: italic;
            color: var(--text);
        }
        .article-prose blockquote p {
            margin-bottom: 0;
        }
        .article-prose code {
            background: #f0ede7;
            padding: 0.15rem 0.4rem;
            border-radius: 4px;
            font-size: 0.9em;
            font-family: "SFMono-Regular", Consolas, monospace;
        }
        .article-prose img {
            border-radius: var(--radius-md);
            margin: 1.5em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-prose .pull-quote {
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--primary-dark);
            line-height: 1.6;
            padding: 1.75rem 2rem;
            background: rgba(61, 107, 92, 0.06);
            border-radius: var(--radius-md);
            border: 1px solid var(--border-strong);
            margin: 2em 0;
            text-align: center;
        }
        .not-found-box {
            text-align: center;
            padding: 3rem 1.5rem;
            background: var(--surface-warm);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border-strong);
        }
        .not-found-box h2 {
            font-size: 1.5rem;
            color: var(--text-strong);
            margin-bottom: 0.75rem;
        }
        .not-found-box p {
            color: var(--muted);
            margin-bottom: 1.5rem;
        }

        /* ========== Article Hint Bar ========== */
        .article-hint-bar {
            background: rgba(61, 107, 92, 0.06);
            border: 1px solid var(--border-strong);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            margin: 2rem 0;
        }
        .article-hint-bar .hint-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
        }
        .article-hint-bar .hint-text {
            flex: 1;
        }
        .article-hint-bar .hint-text strong {
            color: var(--primary-dark);
            display: block;
            margin-bottom: 0.25rem;
            font-size: 1rem;
        }
        .article-hint-bar .hint-text p {
            margin: 0;
            color: var(--text);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        /* ========== Related Articles ========== */
        .related-section {
            padding: 2.5rem 0;
            background: var(--surface-warm);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .related-section .section-heading {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }
        .related-section .section-heading i {
            color: var(--accent);
        }
        .related-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
        }
        @media (min-width: 768px) {
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 1.5rem;
            }
        }
        .related-card {
            background: var(--surface);
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--border-strong);
        }
        .related-card .card-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #e5e0d8;
        }
        .related-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .related-card:hover .card-cover img {
            transform: scale(1.04);
        }
        .related-card .card-body {
            padding: 1rem 1.25rem 1.25rem;
        }
        .related-card .card-body h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-strong);
            margin-bottom: 0.5rem;
            line-height: 1.45;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-body h3 a {
            color: var(--text-strong);
        }
        .related-card .card-body h3 a:hover {
            color: var(--primary);
        }
        .related-card .card-body .card-excerpt {
            font-size: 0.9rem;
            color: var(--muted);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 0.85rem;
        }
        .related-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--muted-light);
        }
        .related-card .card-meta .meta-tag {
            color: var(--primary);
            font-weight: 500;
        }

        /* ========== Prev / Next ========== */
        .prev-next-section {
            padding: 2rem 0;
            background: var(--surface);
        }
        .prev-next-row {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }
        @media (min-width: 768px) {
            .prev-next-row {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }
        .prev-next-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.75rem 1.25rem;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: var(--surface);
            color: var(--text);
            font-size: 0.95rem;
            font-weight: 500;
            transition: border-color var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
            max-width: 100%;
        }
        .prev-next-btn:hover {
            border-color: var(--border-strong);
            background: var(--surface-warm);
            color: var(--primary);
        }
        .prev-next-btn i {
            color: var(--accent);
        }
        .prev-next-btn .btn-label {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 180px;
        }
        @media (max-width: 767px) {
            .prev-next-btn .btn-label {
                max-width: 140px;
            }
        }
        .back-to-list {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.75rem 1.25rem;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-size: 0.95rem;
            font-weight: 500;
            transition: background var(--transition-fast), transform var(--transition-fast);
        }
        .back-to-list:hover {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ========== CTA Bar ========== */
        .cta-bar-section {
            padding: 2.5rem 0;
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 55%, var(--primary-light) 100%);
            color: #fff;
        }
        .cta-bar-inner {
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            gap: 1.25rem;
        }
        @media (min-width: 768px) {
            .cta-bar-inner {
                flex-direction: row;
                text-align: left;
                justify-content: space-between;
                gap: 2rem;
            }
        }
        .cta-bar-inner .cta-text {
            flex: 1;
        }
        .cta-bar-inner .cta-text h2 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 0.4rem;
            color: #fff;
        }
        .cta-bar-inner .cta-text p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.82);
            margin: 0;
        }
        .cta-bar-inner .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
            padding: 0.75rem 1.5rem;
            border-radius: var(--radius-sm);
            background: #fff;
            color: var(--primary-dark);
            font-weight: 600;
            font-size: 0.95rem;
            white-space: nowrap;
            transition: background var(--transition-fast), transform var(--transition-fast);
        }
        .cta-bar-inner .cta-btn:hover {
            background: var(--accent-soft);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* ========== Footer ========== */
        .site-footer {
            background: #1f1d18;
            color: rgba(255, 255, 255, 0.78);
            padding-top: 3rem;
            padding-bottom: 1.5rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.5rem;
            margin-bottom: 2rem;
        }
        @media (min-width: 768px) {
            .site-footer .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
                gap: 2rem;
            }
        }
        .site-footer .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .site-footer .footer-brand .logo-icon-sm {
            width: 32px;
            height: 32px;
            border-radius: 8px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 0.9rem;
        }
        .site-footer .footer-brand p {
            font-size: 0.9rem;
            line-height: 1.65;
            color: rgba(255, 255, 255, 0.65);
            margin: 0;
        }
        .site-footer .footer-column h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 0.8rem;
        }
        .site-footer .footer-column ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-column ul li {
            margin-bottom: 0.5rem;
        }
        .site-footer .footer-column ul a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .site-footer .footer-column ul a:hover {
            color: var(--accent-soft);
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
            padding-top: 1.25rem;
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }
        @media (min-width: 768px) {
            .site-footer .footer-bottom {
                flex-direction: row;
                justify-content: space-between;
                align-items: center;
            }
        }

        /* ========== Section Spacing Helper ========== */
        .section-pad {
            padding: 2.5rem 0;
        }
        @media (min-width: 768px) {
            .section-pad {
                padding: 3rem 0;
            }
        }