/* roulang page: index */
:root {
            --color-primary: #8A4B1F;
            --color-secondary: #D98E32;
            --color-bg-main: #FAF4E8;
            --color-bg-dark: #3A2318;
            --color-card: #FFFDF8;
            --color-text: #2B1E12;
            --color-text-light: #6C5A4A;
            --color-border: #E4D7C5;
            --color-success: #6B7F3E;
            --color-warning: #B5552E;
            --color-white: #FFFFFF;
            --color-cream: #F6EBD9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 50px;
            --shadow-card: 0 2px 12px rgba(58,35,24,0.06);
            --shadow-card-hover: 0 10px 28px rgba(58,35,24,0.14);
            --shadow-dark-card: 0 4px 20px rgba(0,0,0,0.25);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-numeric: "Inter", "Roboto", system-ui;
            --container-max: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 88px;
            --section-pad-mobile: 52px;
            --transition-base: all 0.28s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

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

        button, input, textarea, select {
            font-family: var(--font-sans);
            font-size: 15px;
        }

        button {
            cursor: pointer;
        }

        h1, h2, h3 {
            letter-spacing: 0.02em;
        }

        h1 {
            font-size: clamp(28px, 4.5vw, 42px);
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
        }

        h2 {
            font-size: clamp(24px, 3.5vw, 32px);
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-bg-dark);
        }

        h3 {
            font-size: clamp(18px, 2.5vw, 22px);
            font-weight: 600;
            line-height: 1.3;
            color: var(--color-bg-dark);
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .section {
            padding: var(--section-pad-desktop) 0;
        }

        .section--cream {
            background-color: var(--color-bg-main);
        }

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

        .section--dark {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
        }

        .section--dark h2,
        .section--dark h3 {
            color: var(--color-cream);
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }

        .section-title {
            margin-bottom: 14px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 36px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            border: 2px solid transparent;
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1.4;
        }

        .btn:hover {
            text-decoration: none;
        }

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

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

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

        .btn--primary:hover {
            background-color: var(--color-bg-dark);
            border-color: var(--color-bg-dark);
            color: var(--color-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(58,35,24,0.2);
        }

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

        .btn--secondary:hover {
            background-color: rgba(217,142,50,0.1);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }

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

        .btn--light:hover {
            background-color: var(--color-cream);
            color: var(--color-bg-dark);
            border-color: var(--color-cream);
            transform: translateY(-2px);
        }

        .btn--outline-light {
            background-color: transparent;
            color: var(--color-cream);
            border-color: rgba(250,244,232,0.5);
        }

        .btn--outline-light:hover {
            background-color: rgba(250,244,232,0.12);
            border-color: var(--color-cream);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            flex-shrink: 0;
        }

        .logo:hover {
            text-decoration: none;
        }

        .logo-mark {
            width: 40px;
            height: 40px;
            background-color: var(--color-primary);
            color: var(--color-white);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--color-text);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            position: relative;
            padding: 6px 0;
            text-decoration: none;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-secondary);
            transition: width 0.25s ease;
        }

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

        .nav-links a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

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

        .nav-cta .btn {
            white-space: nowrap;
            padding: 10px 22px;
            font-size: 14px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            padding: 8px;
            cursor: pointer;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--color-text);
            border-radius: 2px;
            transition: var(--transition-base);
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Mobile drawer */
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            z-index: 999;
            padding: 0 20px;
            flex-direction: column;
            box-shadow: 0 20px 40px rgba(58,35,24,0.1);
        }

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

        .mobile-menu a {
            display: block;
            padding: 14px 0;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            border-bottom: 1px solid var(--color-border);
            text-decoration: none;
        }

        .mobile-menu a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .mobile-menu .btn {
            margin: 16px 0 20px;
            width: 100%;
            justify-content: center;
        }

        /* ========== HERO ========== */
        .hero {
            padding: 60px 0 70px;
            background: linear-gradient(180deg, var(--color-bg-main) 0%, var(--color-white) 100%);
        }

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

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 6px 16px;
            border-radius: var(--radius-lg);
            width: fit-content;
            letter-spacing: 0.05em;
        }

        .hero-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--color-secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .hero h1 {
            font-size: clamp(28px, 4.8vw, 42px);
            line-height: 1.25;
            margin: 0;
        }

        .hero-subtitle {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-bg-dark);
            line-height: 1.5;
        }

        .hero-desc {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.8;
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 8px;
        }

        .hero-stats {
            display: flex;
            gap: 36px;
            margin-top: 16px;
            flex-wrap: wrap;
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
        }

        .hero-stat-num {
            font-family: var(--font-numeric);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--color-text-light);
            letter-spacing: 0.04em;
        }

        .hero-visual {
            position: relative;
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card-hover);
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        .hero-visual-tag {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background-color: rgba(58,35,24,0.82);
            color: var(--color-cream);
            font-size: 13px;
            font-weight: 500;
            padding: 5px 14px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
        }

        /* ========== SECTION 2: CATEGORY STRIP ========== */
        .category-strip {
            background-color: var(--color-white);
            border-top: 1px solid var(--color-border);
            border-bottom: 1px solid var(--color-border);
            padding: 28px 0;
        }

        .category-strip .container {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 0;
        }

        .cat-strip-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            border-right: 1px solid var(--color-border);
            text-decoration: none;
            transition: background-color 0.25s ease;
            min-width: 0;
        }

        .cat-strip-item:last-child {
            border-right: none;
        }

        .cat-strip-item:hover {
            background-color: rgba(217,142,50,0.05);
            text-decoration: none;
        }

        .cat-strip-icon {
            width: 32px;
            height: 32px;
            background-color: rgba(217,142,50,0.15);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            flex-shrink: 0;
            color: var(--color-primary);
        }

        .cat-strip-text {
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .cat-strip-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .cat-strip-desc {
            font-size: 12px;
            color: var(--color-text-light);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        /* ========== SECTION 3: PROCESS CARDS ========== */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin-top: 28px;
        }

        .process-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-top: 3px solid var(--color-secondary);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-card);
        }

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

        .process-step {
            display: inline-block;
            font-family: var(--font-numeric);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.12);
            padding: 3px 12px;
            border-radius: var(--radius-lg);
            margin-bottom: 14px;
            letter-spacing: 0.05em;
        }

        .process-card h3 {
            font-size: 17px;
            margin-bottom: 10px;
        }

        .process-card p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .process-card-img {
            width: 100%;
            height: 130px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 16px;
        }

        /* ========== SECTION 4: RAW MATERIAL ========== */
        .raw-material .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .raw-material-text h2 {
            margin-bottom: 16px;
        }

        .raw-material-text h3 {
            font-size: 20px;
            margin-bottom: 12px;
        }

        .raw-material-text p {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 14px;
        }

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

        .raw-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 16px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .raw-item:hover {
            border-color: var(--color-secondary);
            box-shadow: var(--shadow-card);
        }

        .raw-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-secondary);
            background-color: rgba(217,142,50,0.12);
            padding: 2px 10px;
            border-radius: var(--radius-lg);
            margin-bottom: 8px;
        }

        .raw-item-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }

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

        /* ========== SECTION 5: SCENARIO TABLE ========== */
        .scenario-table {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-top: 28px;
        }

        .scenario-row {
            display: grid;
            grid-template-columns: 0.7fr 1.3fr;
            border-bottom: 1px solid var(--color-border);
            transition: background-color 0.25s ease;
        }

        .scenario-row:last-child {
            border-bottom: none;
        }

        .scenario-row:hover {
            background-color: rgba(217,142,50,0.05);
        }

        .scenario-name {
            padding: 20px 24px;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            border-right: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .scenario-name::before {
            content: '';
            width: 6px;
            height: 6px;
            background-color: var(--color-secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .scenario-desc {
            padding: 20px 24px;
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        /* ========== SECTION 6: CMS POSTS ========== */
        .posts-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 22px;
            margin-top: 28px;
        }

        .post-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

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

        .post-card-img {
            width: 100%;
            height: 150px;
            object-fit: cover;
            border-radius: 10px;
            margin-bottom: 14px;
        }

        .post-card h3 {
            font-size: 16px;
            line-height: 1.5;
            margin-bottom: 8px;
        }

        .post-card h3 a {
            color: var(--color-text);
            text-decoration: none;
        }

        .post-card h3 a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .post-card-summary {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.65;
            margin-bottom: 14px;
            flex-grow: 1;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .post-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--color-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }

        .post-card-cat {
            font-weight: 600;
            color: var(--color-primary);
            font-size: 12px;
        }

        .post-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
        }

        .post-card-link:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        .empty-state {
            text-align: center;
            padding: 48px 20px;
            background-color: var(--color-card);
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-md);
            margin-top: 28px;
        }

        .empty-state-icon {
            font-size: 36px;
            display: block;
            margin-bottom: 12px;
        }

        .empty-state p {
            font-size: 14px;
            color: var(--color-text-light);
        }

        /* ========== SECTION 7: QUALITY DARK ========== */
        .quality-check .container {
            display: grid;
            grid-template-columns: 1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .quality-check-text h2 {
            color: var(--color-cream);
            margin-bottom: 20px;
        }

        .quality-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .quality-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--color-cream);
            font-size: 15px;
            line-height: 1.7;
        }

        .quality-list li::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 22px;
            height: 22px;
            background-color: var(--color-secondary);
            color: var(--color-bg-dark);
            font-weight: 700;
            font-size: 12px;
            border-radius: 50%;
            flex-shrink: 0;
            margin-top: 3px;
        }

        .quality-tip {
            margin-top: 22px;
            font-size: 14px;
            color: var(--color-cream);
            background-color: rgba(255,255,255,0.06);
            border-left: 3px solid var(--color-secondary);
            padding: 14px 18px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            line-height: 1.7;
        }

        .quality-tip strong {
            color: var(--color-secondary);
        }

        .quality-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-dark-card);
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* ========== SECTION 8: TIMELINE ========== */
        .timeline {
            position: relative;
            margin-top: 28px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            top: 8px;
            left: 0;
            right: 0;
            height: 2px;
            background-color: var(--color-border);
            z-index: 0;
        }

        .timeline-item {
            position: relative;
            z-index: 1;
            text-align: center;
            padding-top: 24px;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 14px;
            height: 14px;
            background-color: var(--color-secondary);
            border: 3px solid var(--color-white);
            border-radius: 50%;
            box-shadow: 0 0 0 3px rgba(217,142,50,0.25);
        }

        .timeline-year {
            font-family: var(--font-numeric);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .timeline-desc {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            max-width: 220px;
            margin: 0 auto;
        }

        /* ========== SECTION 9: CASE STUDIES ========== */
        .case-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 26px;
            margin-top: 28px;
        }

        .case-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

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

        .case-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

        .case-card-body {
            padding: 22px 24px;
        }

        .case-card h3 {
            font-size: 18px;
            margin-bottom: 12px;
        }

        .case-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-success);
            background-color: rgba(107,127,62,0.12);
            padding: 3px 12px;
            border-radius: var(--radius-lg);
            margin-bottom: 12px;
        }

        .case-metrics {
            display: flex;
            gap: 20px;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .case-metric {
            display: flex;
            flex-direction: column;
        }

        .case-metric-num {
            font-family: var(--font-numeric);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-secondary);
            line-height: 1.2;
        }

        .case-metric-label {
            font-size: 12px;
            color: var(--color-text-light);
        }

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

        /* ========== SECTION 10: TESTIMONIALS ========== */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
            margin-top: 28px;
        }

        .testimonial-card {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            box-shadow: var(--shadow-card);
            transition: all 0.3s ease;
        }

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

        .testimonial-avatar {
            width: 44px;
            height: 44px;
            background-color: rgba(138,75,31,0.12);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.75;
            margin-bottom: 14px;
            font-style: italic;
        }

        .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-text);
        }

        .testimonial-role {
            font-size: 12px;
            color: var(--color-text-light);
        }

        /* ========== SECTION 11: PROCUREMENT FORM ========== */
        .procurement .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: start;
        }

        .procurement-steps {
            display: flex;
            flex-direction: column;
            gap: 18px;
            margin-top: 20px;
        }

        .procurement-step {
            display: flex;
            align-items: flex-start;
            gap: 14px;
        }

        .procurement-step-num {
            width: 30px;
            height: 30px;
            background-color: var(--color-primary);
            color: var(--color-white);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-numeric);
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }

        .procurement-step-text {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
        }

        .procurement-step-text strong {
            display: block;
            color: var(--color-text);
            font-weight: 600;
            font-size: 15px;
            margin-bottom: 3px;
        }

        .procurement-form {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            box-shadow: var(--shadow-card);
        }

        .procurement-form h3 {
            margin-bottom: 20px;
            font-size: 19px;
        }

        .form-group {
            margin-bottom: 16px;
        }

        .form-group label {
            display: block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 6px;
        }

        .form-group input,
        .form-group select {
            width: 100%;
            height: 48px;
            padding: 0 14px;
            border: 1px solid var(--color-border);
            border-radius: 6px;
            background-color: var(--color-white);
            font-size: 14px;
            color: var(--color-text);
            transition: all 0.25s ease;
        }

        .form-group input:hover,
        .form-group select:hover {
            border-color: var(--color-secondary);
        }

        .form-group input:focus,
        .form-group select:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(138,75,31,0.1);
        }

        .form-group input::placeholder {
            color: #b8aa9a;
        }

        /* ========== SECTION 12: FAQ ========== */
        .faq-list {
            margin-top: 28px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

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

        .faq-item summary {
            padding: 18px 22px;
            cursor: pointer;
            font-weight: 600;
            font-size: 15px;
            color: var(--color-text);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: color 0.25s ease;
            user-select: none;
        }

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

        .faq-item summary:hover {
            color: var(--color-primary);
        }

        .faq-item summary::after {
            content: '';
            width: 10px;
            height: 10px;
            border-right: 2px solid var(--color-secondary);
            border-bottom: 2px solid var(--color-secondary);
            transform: rotate(45deg);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item[open] summary::after {
            transform: rotate(-135deg);
        }

        .faq-item[open] summary {
            color: var(--color-primary);
            border-bottom: 1px solid var(--color-border);
        }

        .faq-answer {
            padding: 18px 22px;
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.8;
        }

        /* ========== SECTION 13: PRODUCT SLIDER ========== */
        .product-slider {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 28px;
            overflow-x: auto;
            padding-bottom: 8px;
            scroll-snap-type: x proximity;
        }

        .product-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-bottom: 3px solid var(--color-primary);
            border-radius: var(--radius-md);
            padding: 20px;
            min-width: 220px;
            scroll-snap-align: start;
            transition: all 0.3s ease;
        }

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

        .product-card h3 {
            font-size: 16px;
            margin-bottom: 8px;
        }

        .product-spec {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.1);
            padding: 2px 10px;
            border-radius: var(--radius-lg);
            margin-bottom: 10px;
        }

        .product-card p {
            font-size: 13px;
            color: var(--color-text-light);
            line-height: 1.65;
            margin-bottom: 12px;
        }

        .product-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
        }

        .product-link:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        /* ========== SECTION 14: UPDATES ========== */
        .updates-strip {
            background-color: rgba(217,142,50,0.1);
            border-top: 3px solid var(--color-primary);
            padding: 24px 0;
        }

        .updates-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .update-item {
            display: flex;
            align-items: baseline;
            gap: 10px;
            font-size: 14px;
            color: var(--color-text);
        }

        .update-date {
            font-family: var(--font-numeric);
            font-size: 13px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .update-title {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.5;
        }

        /* ========== SECTION 15: SERVICE AREA ========== */
        .service-area {
            background-color: var(--color-white);
        }

        .service-row {
            display: flex;
            gap: 24px;
            margin-top: 24px;
            flex-wrap: wrap;
        }

        .service-item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 20px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--color-text);
            transition: all 0.25s ease;
        }

        .service-item:hover {
            border-color: var(--color-secondary);
            background-color: rgba(217,142,50,0.04);
        }

        .service-item-icon {
            font-size: 18px;
            color: var(--color-primary);
            flex-shrink: 0;
        }

        .service-region {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.8;
            margin-top: 16px;
            padding: 16px 20px;
            background-color: var(--color-bg-main);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--color-secondary);
        }

        /* ========== SECTION 16: FINAL CTA ========== */
        .final-cta {
            background-color: var(--color-primary);
            color: var(--color-cream);
            text-align: center;
            padding: 68px 0;
        }

        .final-cta h2 {
            color: var(--color-cream);
            margin-bottom: 16px;
        }

        .final-cta p {
            font-size: 15px;
            color: rgba(250,244,232,0.8);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.75;
        }

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

        .final-cta-brand {
            margin-top: 24px;
            font-size: 13px;
            color: rgba(250,244,232,0.65);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
            padding: 56px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.9fr 1fr 0.9fr;
            gap: 36px;
            padding-bottom: 40px;
        }

        .footer-brand .logo-text {
            color: var(--color-cream);
            font-size: 18px;
        }

        .footer-brand .logo-mark {
            background-color: var(--color-secondary);
            color: var(--color-bg-dark);
        }

        .footer-brand p {
            font-size: 13px;
            color: rgba(250,244,232,0.65);
            line-height: 1.7;
            margin-top: 14px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: var(--color-cream);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: rgba(250,244,232,0.7);
            text-decoration: none;
            transition: color 0.25s ease;
        }

        .footer-col ul a:hover {
            color: var(--color-secondary);
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(250,244,232,0.12);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(250,244,232,0.55);
        }

        .footer-bottom a {
            color: rgba(250,244,232,0.7);
        }

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

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 16px;
            }
            .nav-links a {
                font-size: 14px;
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .product-slider {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-strip .container {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }
            .cat-strip-item {
                border-right: none;
                border-bottom: 1px solid var(--color-border);
                padding: 10px 12px;
            }
            .cat-strip-item:nth-child(n+4) {
                border-bottom: none;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad-desktop: 52px;
                --nav-height: 60px;
            }

            .nav-links {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: flex;
            }

            .hero .container {
                grid-template-columns: 1fr;
                gap: 28px;
                padding: 20px 16px;
            }
            .hero {
                padding: 32px 0 48px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-num {
                font-size: 22px;
            }
            .hero-visual img {
                aspect-ratio: 16/10;
            }

            .process-grid,
            .posts-grid {
                grid-template-columns: 1fr;
            }

            .raw-material .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .raw-grid {
                grid-template-columns: 1fr 1fr;
            }

            .quality-check .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .timeline {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .timeline::before {
                display: none;
            }
            .timeline-item::before {
                left: 16px;
            }
            .timeline-item {
                text-align: left;
                padding-top: 0;
                padding-left: 32px;
            }

            .case-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .procurement .container {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .product-slider {
                grid-template-columns: repeat(2, 1fr);
                overflow-x: auto;
            }

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

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

            .scenario-row {
                grid-template-columns: 1fr;
            }
            .scenario-name {
                border-right: none;
                border-bottom: 1px solid var(--color-border);
                padding: 14px 18px;
            }
            .scenario-desc {
                padding: 14px 18px;
            }

            .category-strip .container {
                grid-template-columns: repeat(2, 1fr);
            }
            .cat-strip-item:nth-child(n+3) {
                border-bottom: 1px solid var(--color-border);
            }
            .cat-strip-item:nth-last-child(-n+2) {
                border-bottom: none;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 14px;
            }
            .section {
                padding: 40px 0;
            }
            h1 {
                font-size: 26px;
            }
            h2 {
                font-size: 22px;
            }
            .hero {
                padding: 24px 0 36px;
            }
            .hero h1 {
                font-size: 24px;
            }
            .hero-desc {
                font-size: 14px;
            }
            .hero-stats {
                gap: 14px;
            }
            .hero-stat-num {
                font-size: 20px;
            }

            .process-grid,
            .posts-grid,
            .raw-grid,
            .timeline,
            .case-grid,
            .testimonial-grid,
            .product-slider,
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .timeline-item {
                padding-left: 28px;
            }

            .category-strip .container {
                grid-template-columns: 1fr;
            }
            .cat-strip-item {
                border-bottom: 1px solid var(--color-border);
                border-right: none;
                padding: 10px 14px;
            }
            .cat-strip-item:last-child {
                border-bottom: none;
            }

            .final-cta {
                padding: 48px 0;
            }
            .final-cta h2 {
                font-size: 22px;
            }
            .final-cta-actions {
                flex-direction: column;
                align-items: center;
            }
            .final-cta-actions .btn {
                width: 100%;
                max-width: 320px;
                justify-content: center;
            }

            .btn {
                padding: 11px 20px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero-actions .btn,
            .final-cta-actions .btn {
                width: 100%;
            }

            .raw-item {
                padding: 14px 12px;
            }
            .case-card-img {
                height: 160px;
            }
            .procurement-form {
                padding: 20px 16px;
            }
            .faq-item summary {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-answer {
                padding: 14px 16px;
                font-size: 13px;
            }

            .updates-grid {
                gap: 12px;
            }
            .update-item {
                flex-direction: column;
                gap: 4px;
            }
        }

        @media (prefers-reduced-motion: reduce) {
            * {
                transition-duration: 0.01ms !important;
                animation-duration: 0.01ms !important;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #8A4B1F;
            --color-secondary: #D98E32;
            --color-bg-main: #FAF4E8;
            --color-bg-dark: #3A2318;
            --color-card: #FFFDF8;
            --color-text: #2B1E12;
            --color-text-light: #6C5A4A;
            --color-border: #E4D7C5;
            --color-success: #6B7F3E;
            --color-warning: #B5552E;
            --color-white: #FFFFFF;
            --color-cream: #F6EBD9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 50px;
            --shadow-card: 0 2px 12px rgba(58,35,24,0.06);
            --shadow-card-hover: 0 10px 28px rgba(58,35,24,0.14);
            --shadow-dark-card: 0 4px 20px rgba(0,0,0,0.25);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-numeric: "Inter", "Roboto", system-ui;
            --container-max: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 88px;
            --section-pad-mobile: 52px;
            --transition-base: all 0.28s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: var(--font-sans);
            font-size: 15px;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--cream {
            background-color: var(--color-bg-main);
        }
        .section--white {
            background-color: var(--color-white);
        }
        .section--dark {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
        }
        .section--dark h2,
        .section--dark h3 {
            color: var(--color-cream);
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .section-title {
            margin-bottom: 14px;
            font-size: 28px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-bg-dark);
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            border: 2px solid transparent;
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn--primary {
            background-color: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .btn--primary:hover {
            background-color: var(--color-bg-dark);
            border-color: var(--color-bg-dark);
            color: var(--color-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(58,35,24,0.2);
        }
        .btn--secondary {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn--secondary:hover {
            background-color: rgba(217,142,50,0.1);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }
        .btn--light {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .btn--light:hover {
            background-color: var(--color-cream);
            color: var(--color-bg-dark);
            border-color: var(--color-cream);
            transform: translateY(-2px);
        }
        .btn--outline-light {
            background-color: transparent;
            color: var(--color-cream);
            border-color: rgba(250,244,232,0.5);
        }
        .btn--outline-light:hover {
            background-color: rgba(250,244,232,0.12);
            border-color: var(--color-cream);
            color: var(--color-white);
            transform: translateY(-2px);
        }
        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            letter-spacing: 0.02em;
        }
        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-primary);
            color: var(--color-cream);
            border-radius: 10px;
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-sans);
        }
        .logo-text {
            white-space: nowrap;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            position: relative;
            display: inline-block;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 6px 0;
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-secondary);
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--color-primary);
        }
        .nav-cta {
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 42px;
            height: 42px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: 8px;
            padding: 8px;
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-text);
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background-color: var(--color-bg-main);
            z-index: 999;
            padding: 20px;
            overflow-y: auto;
        }
        .mobile-menu.active {
            display: block;
        }
        .mobile-menu ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .mobile-menu li {
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-menu li a {
            display: block;
            padding: 16px 8px;
            font-size: 16px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
        }
        .mobile-menu li a.active {
            color: var(--color-primary);
        }
        .mobile-menu .btn {
            margin-top: 20px;
            width: 100%;
        }
        /* ========== CATEGORY HERO ========== */
        .category-hero {
            padding: 60px 0 36px;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
        }
        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .category-hero p {
            max-width: 800px;
            font-size: 16px;
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 0;
        }
        /* ========== CATEGORY LIST GRID ========== */
        .category-list-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 24px;
        }
        .category-card {
            display: flex;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            height: 100%;
        }
        .category-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-secondary);
            transform: translateY(-4px);
        }
        .category-card-img {
            flex: 0 0 40%;
            min-height: 200px;
            background-color: var(--color-cream);
            position: relative;
            overflow: hidden;
        }
        .category-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }
        .category-card-body {
            flex: 1;
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
        }
        .category-card-body h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.3;
            margin-bottom: 10px;
            color: var(--color-text);
        }
        .category-card-body p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .category-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
        }
        .category-card-link:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            background-color: var(--color-card);
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-md);
            color: var(--color-text-light);
        }
        .empty-state .empty-icon {
            font-size: 40px;
            margin-bottom: 12px;
            color: var(--color-secondary);
        }
        /* ========== SUB CATEGORY NAV ========== */
        .sub-cat-nav {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 8px;
        }
        .sub-cat-item {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 18px;
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .sub-cat-item:hover {
            background-color: rgba(217,142,50,0.08);
            border-color: var(--color-secondary);
            color: var(--color-primary);
            text-decoration: none;
        }
        .sub-cat-item.disabled,
        .sub-cat-item.current {
            background-color: rgba(217,142,50,0.15);
            border-color: var(--color-secondary);
            color: var(--color-primary);
            cursor: default;
            pointer-events: none;
        }
        .sub-cat-icon {
            font-size: 18px;
            line-height: 1;
        }
        /* ========== FACT CARDS ========== */
        .fact-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .fact-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .fact-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
        }
        .fact-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-secondary);
            font-family: var(--font-numeric);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .fact-label {
            font-size: 14px;
            color: var(--color-text-light);
            font-weight: 500;
        }
        /* ========== IMAGE TEXT SPLIT ========== */
        .image-text-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .image-text-split h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--color-text);
        }
        .image-text-split p {
            font-size: 16px;
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 12px;
        }
        .image-text-figure {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background-color: var(--color-cream);
            min-height: 320px;
        }
        .image-text-figure img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        /* ========== FAQ ========== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-secondary);
            box-shadow: var(--shadow-card);
        }
        .faq-question {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .faq-question::before {
            content: 'Q';
            font-weight: 700;
            color: var(--color-secondary);
            flex-shrink: 0;
        }
        .faq-answer {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.8;
            padding-left: 26px;
        }
        /* ========== MORE BUTTON ========== */
        .more-entry {
            text-align: center;
            padding: 20px 0;
        }
        /* ========== LINK GROUP ========== */
        .link-group {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            justify-content: center;
        }
        .link-group a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            text-decoration: none;
        }
        .link-group a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
            padding: 56px 0 24px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            color: var(--color-cream);
            margin-bottom: 16px;
        }
        .footer-brand .logo-mark {
            background-color: var(--color-secondary);
            color: var(--color-bg-dark);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(250,244,232,0.75);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-cream);
            margin-bottom: 18px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: rgba(250,244,232,0.8);
            font-size: 14px;
            text-decoration: none;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        .footer-bottom {
            border-top: 1px solid rgba(250,244,232,0.2);
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: rgba(250,244,232,0.6);
        }
        .footer-bottom a {
            color: rgba(250,244,232,0.8);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--color-secondary);
        }
        /* ========== RESPONSIVE ========== */
        @media (max-width: 991.98px) {
            :root {
                --section-pad-desktop: 60px;
            }
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .fact-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .image-text-split {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .category-list-grid {
                grid-template-columns: 1fr;
            }
            .category-card {
                flex-direction: column;
            }
            .category-card-img {
                flex: 0 0 200px;
                min-height: auto;
            }
        }
        @media (max-width: 767.98px) {
            :root {
                --section-pad-desktop: 48px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .fact-grid {
                grid-template-columns: 1fr;
            }
            .sub-cat-nav {
                gap: 8px;
            }
            .sub-cat-item {
                padding: 8px 14px;
                font-size: 13px;
            }
        }
        @media (max-width: 575.98px) {
            .container {
                padding: 0 16px;
            }
            .btn {
                width: 100%;
                justify-content: center;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-card-body {
                padding: 18px;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #8A4B1F;
            --color-secondary: #D98E32;
            --color-bg-main: #FAF4E8;
            --color-bg-dark: #3A2318;
            --color-card: #FFFDF8;
            --color-text: #2B1E12;
            --color-text-light: #6C5A4A;
            --color-border: #E4D7C5;
            --color-success: #6B7F3E;
            --color-warning: #B5552E;
            --color-white: #FFFFFF;
            --color-cream: #F6EBD9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 50px;
            --shadow-card: 0 2px 12px rgba(58,35,24,0.06);
            --shadow-card-hover: 0 10px 28px rgba(58,35,24,0.14);
            --shadow-dark-card: 0 4px 20px rgba(0,0,0,0.25);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-numeric: "Inter", "Roboto", system-ui;
            --container-max: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 88px;
            --section-pad-mobile: 52px;
            --transition-base: all 0.28s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: var(--font-sans);
            font-size: 15px;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--cream {
            background-color: var(--color-bg-main);
        }
        .section--white {
            background-color: var(--color-white);
        }
        .section--dark {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
        }
        .section--dark h2,
        .section--dark h3 {
            color: var(--color-cream);
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .section-title {
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            border: 2px solid transparent;
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn--primary {
            background-color: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .btn--primary:hover {
            background-color: var(--color-bg-dark);
            border-color: var(--color-bg-dark);
            color: var(--color-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(58,35,24,0.2);
        }
        .btn--secondary {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn--secondary:hover {
            background-color: rgba(217,142,50,0.1);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }
        .btn--light {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .btn--light:hover {
            background-color: var(--color-cream);
            color: var(--color-bg-dark);
            border-color: var(--color-cream);
            transform: translateY(-2px);
        }
        .btn--outline-light {
            background-color: transparent;
            color: var(--color-cream);
            border-color: rgba(250,244,232,0.5);
        }
        .btn--outline-light:hover {
            background-color: rgba(250,244,232,0.12);
            border-color: var(--color-cream);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: 0.02em;
            text-decoration: none;
        }
        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background-color: var(--color-primary);
            color: var(--color-cream);
            border-radius: 10px;
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-numeric);
            letter-spacing: -0.05em;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
        }
        .nav-wrap {
            display: flex;
            align-items: center;
            gap: 28px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 24px;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 6px 2px;
            position: relative;
            text-decoration: none;
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 2px;
            background-color: var(--color-secondary);
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-cta {
            white-space: nowrap;
            padding: 10px 20px;
            font-size: 14px;
        }
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 26px;
            color: var(--color-text);
            padding: 4px 8px;
            line-height: 1;
        }
        .menu-toggle:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
            border-radius: 4px;
        }

        /* ========== ARTICLE META / BREADCRUMB ========== */
        .article-hero {
            padding: 42px 0 20px;
            background-color: var(--color-bg-main);
        }
        .article-hero .container {
            max-width: 820px;
        }
        .article-meta-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px 22px;
            margin-top: 14px;
            font-size: 14px;
            color: var(--color-text-light);
        }
        .article-meta-row .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta-row .meta-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background-color: rgba(217,142,50,0.18);
            color: var(--color-primary);
            border-radius: 50%;
            font-size: 11px;
            font-weight: 700;
        }
        .article-category-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 3px 14px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.04em;
        }
        .article-h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-text);
            margin: 14px 0 8px;
            letter-spacing: 0.01em;
        }
        .article-divider {
            height: 1px;
            background-color: var(--color-border);
            margin-top: 22px;
        }
        .breadcrumb-zone {
            padding: 12px 0 0;
        }
        .breadcrumb-zone .container {
            max-width: 820px;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--color-text-light);
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .breadcrumb li {
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li + li::before {
            content: '›';
            color: var(--color-secondary);
            font-weight: 600;
            margin-right: 2px;
        }
        .breadcrumb a {
            color: var(--color-primary);
            font-weight: 500;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        .breadcrumb .current {
            color: var(--color-text-light);
            font-weight: 500;
            max-width: 400px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ========== ARTICLE BODY READING ========== */
        .article-reading {
            padding: 30px 0 70px;
            background-color: var(--color-white);
        }
        .article-reading .container {
            max-width: 820px;
        }
        .article-content {
            font-size: 16px;
            line-height: 1.85;
            color: var(--color-text);
        }
        .article-content p {
            margin-bottom: 18px;
        }
        .article-content h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--color-bg-dark);
            margin: 32px 0 14px;
            letter-spacing: 0.01em;
        }
        .article-content h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-bg-dark);
            margin: 24px 0 10px;
            letter-spacing: 0.01em;
        }
        .article-content img {
            border-radius: 10px;
            max-width: 100%;
            height: auto;
            margin: 20px 0;
        }
        .article-content blockquote {
            border-left: 3px solid var(--color-primary);
            background-color: rgba(217,142,50,0.06);
            padding: 16px 20px;
            border-radius: 0 8px 8px 0;
            margin: 20px 0;
            font-size: 15px;
            color: var(--color-text-light);
        }
        .article-content ul,
        .article-content ol {
            margin: 0 0 18px 22px;
            padding-left: 0;
        }
        .article-content li {
            margin-bottom: 8px;
        }
        .article-empty {
            text-align: center;
            padding: 50px 20px;
        }
        .article-empty-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 70px;
            height: 70px;
            background-color: rgba(217,142,50,0.12);
            color: var(--color-primary);
            border-radius: 50%;
            font-size: 32px;
            margin-bottom: 18px;
        }
        .article-empty h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--color-bg-dark);
        }
        .article-empty p {
            color: var(--color-text-light);
            margin-bottom: 22px;
        }

        /* ========== KEY POINTS CARD ========== */
        .key-points-section {
            padding: 52px 0;
            background-color: var(--color-bg-dark);
        }
        .key-points-section .container {
            max-width: 820px;
        }
        .key-points-card {
            background-color: rgba(250,244,232,0.06);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-md);
            padding: 28px 32px;
            box-shadow: var(--shadow-dark-card);
        }
        .key-points-card h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-secondary);
            margin-bottom: 20px;
            letter-spacing: 0.01em;
        }
        .key-points-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .key-point-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--color-cream);
            font-size: 15px;
            line-height: 1.7;
        }
        .key-point-num {
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 28px;
            height: 28px;
            background-color: var(--color-secondary);
            color: var(--color-bg-dark);
            border-radius: 50%;
            font-size: 13px;
            font-weight: 700;
            margin-top: 2px;
        }

        /* ========== RELATED CARDS ========== */
        .related-section {
            padding: 70px 0;
            background-color: var(--color-bg-main);
        }
        .related-section .container {
            max-width: var(--container-max);
        }
        .related-section .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-bg-dark);
            margin-bottom: 8px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }
        .related-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-secondary);
        }
        .related-card-img {
            height: 170px;
            overflow: hidden;
            background-color: var(--color-cream);
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.04);
        }
        .related-card-body {
            padding: 20px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .related-card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: 0.01em;
        }
        .related-card-summary {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .related-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 13px;
            color: var(--color-text-light);
            padding-top: 12px;
            border-top: 1px solid var(--color-border);
        }
        .related-card-link {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .related-card-link:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        /* ========== RETURN CTA ========== */
        .return-cta-section {
            padding: 60px 0;
            background-color: var(--color-white);
            text-align: center;
        }
        .return-cta-section .container {
            max-width: 680px;
        }
        .return-cta-title {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-bg-dark);
            margin-bottom: 18px;
        }
        .return-cta-actions {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: center;
            gap: 18px;
        }
        .return-cta-actions .text-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-light);
        }
        .return-cta-actions .text-link:hover {
            color: var(--color-primary);
        }

        /* ========== AUTHOR BOX ========== */
        .author-section {
            padding: 40px 0 60px;
            background-color: var(--color-white);
        }
        .author-section .container {
            max-width: 820px;
        }
        .author-box {
            display: flex;
            align-items: flex-start;
            gap: 18px;
            padding-top: 30px;
            border-top: 1px solid var(--color-border);
        }
        .author-avatar {
            flex-shrink: 0;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            overflow: hidden;
            border: 2px solid var(--color-secondary);
        }
        .author-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .author-info h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .author-info p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin: 0;
        }

        /* ========== TAG ZONE ========== */
        .tag-section {
            padding: 0 0 70px;
            background-color: var(--color-white);
        }
        .tag-section .container {
            max-width: 820px;
        }
        .tag-zone {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 24px;
            border-top: 1px solid var(--color-border);
        }
        .tag-chip {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.13);
            padding: 5px 16px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.03em;
            transition: var(--transition-base);
            cursor: default;
        }
        .tag-chip:hover {
            background-color: rgba(217,142,50,0.22);
            color: var(--color-bg-dark);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
            padding: 60px 0 0;
            font-size: 14px;
        }
        .site-footer a {
            color: var(--color-cream);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .site-footer a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 40px;
            border-bottom: 1px solid rgba(250,244,232,0.12);
        }
        .footer-brand .logo {
            color: var(--color-cream);
            margin-bottom: 14px;
        }
        .footer-brand .logo:hover {
            color: var(--color-secondary);
        }
        .footer-brand .logo-mark {
            background-color: var(--color-secondary);
            color: var(--color-bg-dark);
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(250,244,232,0.72);
            max-width: 320px;
            margin: 0;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            font-size: 13px;
            color: rgba(250,244,232,0.75);
            line-height: 1.6;
        }
        .footer-col a:hover {
            color: var(--color-secondary);
        }
        .footer-bottom {
            padding: 20px 0 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(250,244,232,0.55);
        }
        .footer-bottom a {
            color: rgba(250,244,232,0.75);
        }
        .footer-bottom a:hover {
            color: var(--color-secondary);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 991px) {
            .nav-links {
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background-color: var(--color-bg-main);
                border-bottom: 1px solid var(--color-border);
                padding: 12px 20px 20px;
                box-shadow: 0 12px 30px rgba(58,35,24,0.1);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                padding: 0;
            }
            .nav-links a {
                display: block;
                padding: 14px 4px;
                font-size: 16px;
                border-bottom: 1px solid var(--color-border);
            }
            .nav-links a::after {
                display: none;
            }
            .nav-cta {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .article-h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 767px) {
            .section {
                padding: 52px 0;
            }
            .article-hero {
                padding: 28px 0 16px;
            }
            .article-h1 {
                font-size: 24px;
                line-height: 1.4;
            }
            .article-meta-row {
                gap: 8px 14px;
                font-size: 13px;
            }
            .article-reading {
                padding: 22px 0 48px;
            }
            .article-content {
                font-size: 15px;
                line-height: 1.8;
            }
            .article-content h2 {
                font-size: 21px;
            }
            .article-content h3 {
                font-size: 18px;
            }
            .key-points-section {
                padding: 40px 0;
            }
            .key-points-card {
                padding: 22px 20px;
            }
            .key-points-card h2 {
                font-size: 19px;
            }
            .related-section {
                padding: 52px 0;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .return-cta-section {
                padding: 46px 0;
            }
            .return-cta-title {
                font-size: 19px;
            }
            .return-cta-actions {
                flex-direction: column;
                gap: 12px;
            }
            .return-cta-actions .btn {
                width: 100%;
            }
            .author-section {
                padding: 30px 0 46px;
            }
            .author-box {
                flex-direction: column;
                gap: 14px;
            }
            .tag-section {
                padding: 0 0 46px;
            }
        }
        @media (max-width: 575px) {
            .container {
                padding: 0 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
            }
            .footer-brand p {
                max-width: 100%;
            }
            .logo-text {
                font-size: 16px;
            }
            .article-h1 {
                font-size: 22px;
            }
            .breadcrumb .current {
                max-width: 180px;
            }
            .key-point-item {
                font-size: 14px;
            }
            .related-card-title {
                font-size: 15px;
            }
            .author-info p {
                font-size: 13px;
            }
            .tag-chip {
                font-size: 12px;
                padding: 4px 12px;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #8A4B1F;
            --color-secondary: #D98E32;
            --color-bg-main: #FAF4E8;
            --color-bg-dark: #3A2318;
            --color-card: #FFFDF8;
            --color-text: #2B1E12;
            --color-text-light: #6C5A4A;
            --color-border: #E4D7C5;
            --color-success: #6B7F3E;
            --color-warning: #B5552E;
            --color-white: #FFFFFF;
            --color-cream: #F6EBD9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 50px;
            --shadow-card: 0 2px 12px rgba(58,35,24,0.06);
            --shadow-card-hover: 0 10px 28px rgba(58,35,24,0.14);
            --shadow-dark-card: 0 4px 20px rgba(0,0,0,0.25);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-numeric: "Inter", "Roboto", system-ui;
            --container-max: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 48px;
            --transition-base: all 0.28s ease;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, input, textarea, select {
            font-family: var(--font-sans);
            font-size: 15px;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--cream {
            background-color: var(--color-bg-main);
        }
        .section--white {
            background-color: var(--color-white);
        }
        .section--dark {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
        }
        .section--dark h2,
        .section--dark h3 {
            color: var(--color-cream);
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .section-title {
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            border: 2px solid transparent;
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn--primary {
            background-color: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .btn--primary:hover {
            background-color: var(--color-bg-dark);
            border-color: var(--color-bg-dark);
            color: var(--color-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(58,35,24,0.2);
        }
        .btn--secondary {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn--secondary:hover {
            background-color: rgba(217,142,50,0.1);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }
        .btn--light {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .btn--light:hover {
            background-color: var(--color-cream);
            color: var(--color-bg-dark);
            border-color: var(--color-cream);
            transform: translateY(-2px);
        }
        .btn--outline-light {
            background-color: transparent;
            color: var(--color-cream);
            border-color: rgba(250,244,232,0.5);
        }
        .btn--outline-light:hover {
            background-color: rgba(250,244,232,0.12);
            border-color: var(--color-cream);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--color-text);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.02em;
        }
        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            background-color: var(--color-primary);
            color: var(--color-white);
            border-radius: 8px;
            font-size: 20px;
            font-weight: 700;
        }
        .logo-text {
            font-weight: 700;
            color: var(--color-text);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-links a::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--color-secondary);
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-cta {
            white-space: nowrap;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--color-border);
            border-radius: 6px;
            width: 40px;
            height: 40px;
            font-size: 20px;
            color: var(--color-text);
            align-items: center;
            justify-content: center;
            transition: all 0.2s ease;
        }
        .nav-toggle:hover {
            background-color: rgba(217,142,50,0.1);
            border-color: var(--color-secondary);
        }
        .mobile-menu {
            display: none;
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            padding: 16px 20px 24px;
            z-index: 999;
            box-shadow: 0 10px 30px rgba(58,35,24,0.1);
        }
        .mobile-menu ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .mobile-menu li {
            border-bottom: 1px solid var(--color-border);
        }
        .mobile-menu li:last-child {
            border-bottom: none;
        }
        .mobile-menu a {
            display: block;
            padding: 12px 0;
            font-size: 16px;
            color: var(--color-text);
            text-decoration: none;
        }
        .mobile-menu a:hover {
            color: var(--color-primary);
        }
        .mobile-menu .btn {
            width: 100%;
            margin-top: 16px;
            justify-content: center;
        }

        /* ========== CATEGORY HERO ========== */
        .category-hero {
            padding-top: 60px;
            padding-bottom: 48px;
            border-bottom: 1px solid var(--color-border);
            background-color: var(--color-bg-main);
        }
        .category-hero .section-label {
            margin-bottom: 10px;
        }
        .category-hero h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--color-text);
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }
        .category-hero .hero-description {
            font-size: 16px;
            color: var(--color-text-light);
            max-width: 760px;
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            font-size: 14px;
            color: var(--color-text-light);
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .hero-meta .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background-color: var(--color-secondary);
        }

        /* ========== QUALITY CARD GRID (板块2) ========== */
        .quality-card-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .quality-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            display: flex;
            overflow: hidden;
            transition: var(--transition-base);
        }
        .quality-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--color-secondary);
        }
        .quality-card-img {
            width: 40%;
            min-height: 180px;
            background-color: #F0E4D4;
            position: relative;
            overflow: hidden;
        }
        .quality-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .quality-card:hover .quality-card-img img {
            transform: scale(1.05);
        }
        .quality-card-body {
            width: 60%;
            padding: 22px 24px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .quality-card-body h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--color-bg-dark);
        }
        .quality-card-body p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .quality-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .quality-card-link:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        /* ========== ENTRY GRID (板块3) ========== */
        .entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .entry-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: var(--transition-base);
            box-shadow: var(--shadow-card);
            text-decoration: none;
            color: var(--color-text);
        }
        .entry-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
            border-color: var(--color-secondary);
            text-decoration: none;
            color: var(--color-text);
        }
        .entry-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background-color: rgba(217,142,50,0.15);
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            margin-bottom: 12px;
        }
        .entry-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .entry-card p {
            font-size: 14px;
            color: var(--color-text-light);
            margin-bottom: 0;
        }

        /* ========== FACT GRID (板块4) ========== */
        .fact-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .fact-item {
            text-align: center;
            padding: 28px 16px;
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-md);
            background-color: rgba(255,255,255,0.04);
            box-shadow: var(--shadow-dark-card);
            transition: var(--transition-base);
        }
        .fact-item:hover {
            background-color: rgba(255,255,255,0.08);
            transform: translateY(-2px);
        }
        .fact-number {
            font-size: 40px;
            font-weight: 700;
            color: var(--color-secondary);
            font-family: var(--font-numeric);
            line-height: 1.1;
            margin-bottom: 8px;
        }
        .fact-label {
            font-size: 14px;
            color: var(--color-cream);
            opacity: 0.9;
            letter-spacing: 0.03em;
        }

        /* ========== SPLIT LAYOUT (板块5) ========== */
        .split-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .split-text h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-bg-dark);
            margin-bottom: 16px;
        }
        .split-text p {
            font-size: 15px;
            color: var(--color-text-light);
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .split-text ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .split-text li {
            position: relative;
            padding-left: 24px;
            margin-bottom: 10px;
            font-size: 15px;
            color: var(--color-text);
            line-height: 1.7;
        }
        .split-text li::before {
            content: "✓";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--color-primary);
            font-weight: 700;
        }
        .split-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
        }
        .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            aspect-ratio: 4/3;
        }

        /* ========== FAQ (板块6) ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-secondary);
            box-shadow: 0 4px 16px rgba(58,35,24,0.08);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-bg-dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition-base);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-question .arrow {
            flex-shrink: 0;
            width: 12px;
            height: 12px;
            border-right: 2px solid var(--color-secondary);
            border-bottom: 2px solid var(--color-secondary);
            transform: rotate(45deg);
            transition: transform 0.25s ease;
        }
        .faq-item.open .faq-question .arrow {
            transform: rotate(-135deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.8;
            margin: 0;
        }

        /* ========== MORE / BACK (板块7、8) ========== */
        .text-center {
            text-align: center;
        }
        .text-center p {
            color: var(--color-text-light);
            margin-bottom: 20px;
            font-size: 16px;
        }
        .back-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            font-size: 15px;
        }
        .back-links a {
            color: var(--color-primary);
            text-decoration: none;
            padding: 6px 12px;
            border-radius: 6px;
            transition: var(--transition-base);
        }
        .back-links a:hover {
            background-color: rgba(217,142,50,0.1);
            color: var(--color-secondary);
            text-decoration: none;
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
            padding: 60px 0 20px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            color: var(--color-cream);
            margin-bottom: 16px;
        }
        .footer-brand .logo:hover {
            color: var(--color-secondary);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(250,244,232,0.75);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-secondary);
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            font-size: 14px;
            color: rgba(250,244,232,0.75);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-secondary);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            font-size: 13px;
            color: rgba(250,244,232,0.6);
            text-align: center;
        }
        .footer-bottom a {
            color: var(--color-secondary);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 991px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.active {
                display: block;
            }
            .quality-card-grid {
                grid-template-columns: 1fr 1fr;
            }
            .fact-grid {
                grid-template-columns: 1fr 1fr;
            }
            .split-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 767px) {
            .quality-card-grid {
                grid-template-columns: 1fr;
            }
            .quality-card {
                flex-direction: column;
            }
            .quality-card-img {
                width: 100%;
                min-height: 180px;
            }
            .quality-card-body {
                width: 100%;
            }
            .entry-grid {
                grid-template-columns: 1fr;
            }
            .fact-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .fact-number {
                font-size: 32px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .fact-grid {
                grid-template-columns: 1fr;
            }
            .fact-item {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: var(--section-pad-mobile) 0;
            }
            .category-hero {
                padding-top: 40px;
                padding-bottom: 36px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .btn {
                padding: 10px 22px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #8A4B1F;
            --color-secondary: #D98E32;
            --color-bg-main: #FAF4E8;
            --color-bg-dark: #3A2318;
            --color-card: #FFFDF8;
            --color-text: #2B1E12;
            --color-text-light: #6C5A4A;
            --color-border: #E4D7C5;
            --color-success: #6B7F3E;
            --color-warning: #B5552E;
            --color-white: #FFFFFF;
            --color-cream: #F6EBD9;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 50px;
            --shadow-card: 0 2px 12px rgba(58,35,24,0.06);
            --shadow-card-hover: 0 10px 28px rgba(58,35,24,0.14);
            --shadow-dark-card: 0 4px 20px rgba(0,0,0,0.25);
            --font-sans: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            --font-numeric: "Inter", "Roboto", system-ui;
            --container-max: 1200px;
            --nav-height: 68px;
            --section-pad-desktop: 72px;
            --section-pad-mobile: 48px;
            --transition-base: all 0.28s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--color-text);
            background-color: var(--color-bg-main);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            margin: 0;
            padding: 0;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: var(--font-sans);
            font-size: 15px;
        }
        button {
            cursor: pointer;
        }
        h1, h2, h3, h4, h5, h6 {
            font-weight: 700;
            line-height: 1.25;
            color: var(--color-bg-dark);
            letter-spacing: 0.02em;
            margin-top: 0;
        }
        p {
            margin-top: 0;
        }
        ul {
            margin: 0;
            padding: 0;
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }
        .section {
            padding: var(--section-pad-desktop) 0;
        }
        .section--cream {
            background-color: var(--color-bg-main);
        }
        .section--white {
            background-color: var(--color-white);
        }
        .section--dark {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
        }
        .section--dark h2,
        .section--dark h3 {
            color: var(--color-cream);
        }
        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 4px 14px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.06em;
            margin-bottom: 14px;
        }
        .section-title {
            font-size: 28px;
            margin-bottom: 14px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--color-text-light);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 36px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            letter-spacing: 0.02em;
            border: 2px solid transparent;
            transition: all 0.25s ease;
            text-decoration: none;
            line-height: 1.4;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn:focus-visible {
            outline: 2px solid var(--color-secondary);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn--primary {
            background-color: var(--color-primary);
            color: var(--color-white);
            border-color: var(--color-primary);
        }
        .btn--primary:hover {
            background-color: var(--color-bg-dark);
            border-color: var(--color-bg-dark);
            color: var(--color-white);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(58,35,24,0.2);
        }
        .btn--secondary {
            background-color: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn--secondary:hover {
            background-color: rgba(217,142,50,0.1);
            border-color: var(--color-secondary);
            color: var(--color-secondary);
            transform: translateY(-2px);
        }
        .btn--light {
            background-color: var(--color-white);
            color: var(--color-primary);
            border-color: var(--color-white);
        }
        .btn--light:hover {
            background-color: var(--color-cream);
            color: var(--color-bg-dark);
            border-color: var(--color-cream);
            transform: translateY(-2px);
        }
        .btn--outline-light {
            background-color: transparent;
            color: var(--color-cream);
            border-color: rgba(250,244,232,0.5);
        }
        .btn--outline-light:hover {
            background-color: rgba(250,244,232,0.12);
            border-color: var(--color-cream);
            color: var(--color-white);
            transform: translateY(-2px);
        }

        /* ========== HEADER / NAV ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: var(--color-bg-main);
            border-bottom: 1px solid var(--color-border);
            height: var(--nav-height);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            font-weight: 700;
            font-size: 18px;
            color: var(--color-bg-dark);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .logo:hover {
            text-decoration: none;
            color: var(--color-primary);
        }
        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background-color: var(--color-primary);
            color: var(--color-white);
            font-size: 18px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }
        .logo-text {
            font-weight: 700;
            font-size: 17px;
            color: var(--color-bg-dark);
            letter-spacing: 0.03em;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 26px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li {
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            display: inline-block;
            padding: 20px 0 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            text-decoration: none;
            border-bottom: 2px solid transparent;
            transition: var(--transition-base);
            position: relative;
        }
        .nav-links a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -1px;
            height: 2px;
            background-color: var(--color-secondary);
            transform: scaleX(0);
            transform-origin: center;
            transition: transform 0.25s ease;
        }
        .nav-links a:hover::after {
            transform: scaleX(1);
        }
        .nav-links a.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-links a.active::after {
            transform: scaleX(1);
            background-color: var(--color-secondary);
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            padding: 8px;
            background: transparent;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition-base);
        }
        .nav-toggle:hover {
            background-color: rgba(217,142,50,0.1);
        }
        .nav-toggle span {
            display: block;
            width: 100%;
            height: 2px;
            background-color: var(--color-bg-dark);
            border-radius: 2px;
            transition: var(--transition-base);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle[aria-expanded="true"] span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ========== CATEGORY H1 BANNER ========== */
        .cat-hero {
            background-color: var(--color-bg-main);
            padding: 56px 0 28px;
            border-bottom: 1px solid var(--color-border);
        }
        .cat-hero-inner {
            max-width: 820px;
        }
        .cat-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-bg-dark);
            letter-spacing: 0.04em;
            margin-bottom: 16px;
        }
        .cat-hero-desc {
            font-size: 16px;
            color: var(--color-text-light);
            line-height: 1.85;
            max-width: 720px;
            margin-bottom: 0;
        }

        /* ========== CATEGORY CARD GRID ========== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 8px;
        }
        .post-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            transform: translateY(-4px);
            border-color: var(--color-secondary);
            box-shadow: var(--shadow-card-hover);
        }
        .post-card-img {
            width: 100%;
            aspect-ratio: 16/10;
            overflow: hidden;
            background-color: var(--color-cream);
            flex-shrink: 0;
        }
        .post-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .post-card:hover .post-card-img img {
            transform: scale(1.04);
        }
        .post-card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .post-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--color-text-light);
            margin-bottom: 10px;
        }
        .post-card-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--color-primary);
            background-color: rgba(217,142,50,0.15);
            padding: 2px 12px;
            border-radius: var(--radius-lg);
            letter-spacing: 0.04em;
        }
        .post-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--color-bg-dark);
            margin-bottom: 10px;
        }
        .post-card-excerpt {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .post-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: var(--transition-base);
        }
        .post-card-link:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }
        .empty-state {
            background-color: var(--color-card);
            border: 1px dashed var(--color-border);
            border-radius: var(--radius-md);
            padding: 48px 24px;
            text-align: center;
            color: var(--color-text-light);
            font-size: 15px;
        }

        /* ========== CATEGORY SUB-NAV ========== */
        .subnav-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 8px;
        }
        .subnav-item {
            flex: 1 1 200px;
            min-width: 180px;
            background-color: var(--color-white);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition-base);
            text-decoration: none;
            color: var(--color-text);
        }
        .subnav-item:hover {
            background-color: rgba(217,142,50,0.06);
            border-color: var(--color-secondary);
            text-decoration: none;
            color: var(--color-primary);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        .subnav-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            background-color: rgba(217,142,50,0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .subnav-text {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-bg-dark);
            line-height: 1.3;
        }
        .subnav-item:hover .subnav-text {
            color: var(--color-primary);
        }

        /* ========== STATS ROW ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .stat-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-secondary);
            transform: translateY(-2px);
        }
        .stat-number {
            font-family: var(--font-numeric);
            font-size: 34px;
            font-weight: 700;
            color: var(--color-secondary);
            letter-spacing: 0.02em;
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 14px;
            color: var(--color-text-light);
            font-weight: 500;
        }

        /* ========== FEATURE IMAGE TEXT ========== */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 44px;
            align-items: center;
        }
        .feature-text h2 {
            font-size: 26px;
            margin-bottom: 16px;
        }
        .feature-text p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text-light);
            margin-bottom: 12px;
        }
        .feature-img {
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid var(--color-border);
            box-shadow: var(--shadow-card);
            background-color: var(--color-cream);
        }
        .feature-img img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* ========== FAQ CARDS ========== */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 8px;
        }
        .faq-card {
            background-color: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-base);
        }
        .faq-card:hover {
            border-color: var(--color-secondary);
            box-shadow: var(--shadow-card-hover);
        }
        .faq-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .faq-card p {
            font-size: 14px;
            color: var(--color-text-light);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ========== VIEW MORE ========== */
        .view-more-wrap {
            text-align: center;
            padding: 10px 0 4px;
        }

        /* ========== BACK LINKS ========== */
        .back-links {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            align-items: center;
            justify-content: center;
            margin-top: 8px;
        }
        .back-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-primary);
            text-decoration: none;
            padding: 8px 16px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-sm);
            background-color: var(--color-card);
            transition: var(--transition-base);
        }
        .back-links a:hover {
            border-color: var(--color-secondary);
            background-color: rgba(217,142,50,0.08);
            color: var(--color-primary);
            text-decoration: none;
            transform: translateY(-2px);
        }

        /* ========== FOOTER ========== */
        .site-footer {
            background-color: var(--color-bg-dark);
            color: var(--color-cream);
            padding: 56px 0 24px;
        }
        .site-footer .container {
            max-width: var(--container-max);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
            color: var(--color-cream);
        }
        .footer-brand .logo:hover {
            color: var(--color-secondary);
        }
        .footer-brand .logo-text {
            color: var(--color-cream);
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(246,235,217,0.7);
            line-height: 1.75;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-cream);
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col a {
            font-size: 14px;
            color: rgba(246,235,217,0.7);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--color-secondary);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(246,235,217,0.15);
            padding-top: 20px;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(246,235,217,0.6);
            margin: 0;
        }
        .footer-bottom a {
            color: rgba(246,235,217,0.8);
            text-decoration: none;
        }
        .footer-bottom a:hover {
            color: var(--color-secondary);
            text-decoration: underline;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .faq-grid {
                grid-template-columns: 1fr;
                max-width: 600px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --nav-height: 60px;
                --section-pad-desktop: 48px;
            }
            .nav-links {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .nav-cta {
                display: none;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .subnav-grid {
                gap: 12px;
            }
            .subnav-item {
                flex: 1 1 150px;
                min-width: 140px;
                padding: 14px 16px;
            }
            .cat-hero h1 {
                font-size: 27px;
            }
            .card-grid {
                grid-template-columns: 1fr;
                max-width: 520px;
            }
            .stats-grid {
                gap: 14px;
            }
            .stat-number {
                font-size: 27px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section-title {
                font-size: 23px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-pad-desktop: 40px;
            }
            .container {
                padding: 0 16px;
            }
            .cat-hero {
                padding: 36px 0 20px;
            }
            .cat-hero h1 {
                font-size: 23px;
            }
            .cat-hero-desc {
                font-size: 15px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 14px;
            }
            .stat-number {
                font-size: 24px;
            }
            .subnav-item {
                flex: 1 1 100%;
                min-width: 100%;
            }
            .btn {
                padding: 11px 22px;
                font-size: 14px;
            }
            .back-links {
                gap: 10px;
            }
            .back-links a {
                font-size: 14px;
                padding: 7px 12px;
            }
        }