/* roulang page: index */
:root {
            --primary: #1A2E27;
            --primary-deep: #0F211C;
            --accent: #C9A96E;
            --accent-strong: #A9824F;
            --bg: #FAF8F4;
            --bg-white: #FFFFFF;
            --text: #1F2220;
            --text-secondary: #6B6B63;
            --border: #E5DED3;
            --border-light: #EFEAE2;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 0px;
            --shadow-sm: 0 6px 24px rgba(15, 33, 28, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 33, 28, 0.12);
            --shadow-lg: 0 20px 48px rgba(15, 33, 28, 0.16);
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', Georgia, 'Times New Roman', serif;
            --font-sans: 'Source Han Sans SC', 'Noto Sans CJK SC', 'Helvetica Neue', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-width: 240px;
            --transition: 0.25s ease;
            --container-max: 1120px;
            --section-padding: 82px 0;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            padding-left: var(--nav-width);
            transition: padding-left 0.3s ease;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        :focus {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }
        :focus:not(:focus-visible) {
            outline: none;
        }
        :focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 3px;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-deep {
            background-color: var(--primary-deep);
            color: var(--bg);
        }
        .section-deep .section-subtitle {
            color: rgba(250, 248, 244, 0.7);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 6px;
        }

        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-serif);
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: inherit;
        }

        h1 {
            font-size: clamp(30px, 4.2vw, 48px);
            font-weight: 700;
        }

        h2 {
            font-size: clamp(26px, 3.2vw, 36px);
        }

        h3 {
            font-size: clamp(20px, 2.2vw, 24px);
            font-weight: 600;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 680px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }

        .btn-primary {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-light {
            background-color: var(--bg);
            color: var(--primary);
            border-color: var(--bg);
        }
        .btn-light:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        /* Left Sidebar Navigation */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--primary-deep);
            color: var(--bg);
            display: flex;
            flex-direction: column;
            z-index: 900;
            padding: 32px 20px 24px;
            box-shadow: 2px 0 16px rgba(15, 33, 28, 0.2);
            transition: transform 0.3s ease;
        }

        .side-nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(201, 169, 110, 0.25);
            margin-bottom: 24px;
        }

        .side-nav-logo-icon {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent) 0%, #8F7440 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            color: var(--primary-deep);
            flex-shrink: 0;
            box-shadow: 0 4px 16px rgba(201, 169, 110, 0.3);
        }

        .side-nav-logo-text {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--bg);
        }
        .side-nav-logo-text span {
            color: var(--accent);
        }

        .side-nav-menu {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .side-nav-link {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(250, 248, 244, 0.75);
            border-radius: var(--radius-sm);
            letter-spacing: 0.03em;
            transition: all var(--transition);
            position: relative;
        }
        .side-nav-link:hover {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.08);
            transform: translateX(4px);
        }
        .side-nav-link.active {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.12);
            font-weight: 600;
        }
        .side-nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 24px;
            background-color: var(--accent);
            border-radius: 0 2px 2px 0;
        }

        .side-nav-footer {
            padding-top: 20px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }
        .side-nav-footer a {
            font-size: 12px;
            color: rgba(250, 248, 244, 0.5);
            letter-spacing: 0.04em;
            transition: color var(--transition);
        }
        .side-nav-footer a:hover {
            color: var(--accent);
        }
        .side-nav-copy {
            font-size: 11px;
            color: rgba(250, 248, 244, 0.4);
            letter-spacing: 0.02em;
            margin-top: 4px;
        }

        /* Mobile Top Bar */
        .mobile-header {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 60px;
            background-color: var(--primary-deep);
            color: var(--bg);
            z-index: 950;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            box-shadow: 0 2px 12px rgba(15, 33, 28, 0.3);
        }
        .mobile-header-logo {
            font-family: var(--font-serif);
            font-size: 17px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--bg);
        }
        .mobile-header-logo span {
            color: var(--accent);
        }
        .hamburger {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            border-radius: var(--radius-sm);
            transition: background-color var(--transition);
        }
        .hamburger:hover {
            background-color: rgba(201, 169, 110, 0.15);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--bg);
            border-radius: 1px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* Hero */
        .hero {
            position: relative;
            min-height: 88vh;
            display: flex;
            align-items: center;
            padding: 100px 0 80px;
            background-color: var(--primary-deep);
            color: var(--bg);
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            opacity: 0.5;
            animation: heroBgFade 2s ease-out forwards;
        }
        @keyframes heroBgFade {
            0% {
                opacity: 0.2;
                transform: scale(1.05);
            }
            100% {
                opacity: 0.55;
                transform: scale(1);
            }
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 33, 28, 0.92) 0%, rgba(15, 33, 28, 0.65) 40%, rgba(15, 33, 28, 0.35) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            max-width: 780px;
            animation: heroContentUp 0.9s ease-out forwards;
        }
        @keyframes heroContentUp {
            0% {
                opacity: 0;
                transform: translateY(30px);
            }
            100% {
                opacity: 1;
                transform: translateY(0);
            }
        }
        .hero-brand-avatar {
            width: 84px;
            height: 84px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent) 0%, #B8965A 50%, #8F7440 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 32px;
            color: var(--primary-deep);
            margin-bottom: 24px;
            box-shadow: 0 8px 32px rgba(201, 169, 110, 0.35);
            border: 2px solid rgba(201, 169, 110, 0.5);
        }
        .hero h1 {
            font-size: clamp(26px, 3.8vw, 44px);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(250, 248, 244, 0.82);
            max-width: 620px;
            margin-bottom: 32px;
        }
        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 32px;
        }
        .hero-badge {
            display: flex;
            align-items: baseline;
            gap: 8px;
            padding: 10px 20px;
            background-color: rgba(250, 248, 244, 0.08);
            border: 1px solid rgba(201, 169, 110, 0.35);
            border-radius: var(--radius-sm);
            backdrop-filter: blur(4px);
        }
        .hero-badge-num {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            color: var(--accent);
        }
        .hero-badge-label {
            font-size: 13px;
            color: rgba(250, 248, 244, 0.75);
            letter-spacing: 0.04em;
        }
        .hero-cta-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* Cards */
        .card-grid {
            display: grid;
            gap: 24px;
        }
        .card-grid-3 {
            grid-template-columns: repeat(3, 1fr);
        }
        .card-grid-2 {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid-4 {
            grid-template-columns: repeat(4, 1fr);
        }
        .card-grid-5 {
            grid-template-columns: repeat(5, 1fr);
        }

        .card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 28px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(201, 169, 110, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: var(--accent-strong);
            flex-shrink: 0;
        }
        .card-title {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.4;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-strong);
            letter-spacing: 0.04em;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
            margin-top: auto;
        }
        .card-link:hover {
            color: var(--primary);
            gap: 10px;
        }

        .card-with-image {
            padding: 0;
            overflow: hidden;
        }
        .card-image-wrap {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background-color: var(--border-light);
        }
        .card-image-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
        }
        .card-with-image:hover .card-image-wrap img {
            transform: scale(1.05);
            filter: saturate(1.1);
        }
        .card-image-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 6px 14px;
            background-color: rgba(15, 33, 28, 0.85);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.06em;
            border-radius: var(--radius-sm);
            backdrop-filter: blur(4px);
        }
        .card-with-image .card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }

        /* Feature Cards */
        .feature-card {
            text-align: left;
            padding: 32px 28px;
        }
        .feature-card .card-icon {
            margin-bottom: 8px;
        }

        /* Data Stats */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }
        .stat-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--accent);
        }
        .stat-num {
            font-family: var(--font-serif);
            font-size: 40px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 8px;
            letter-spacing: 0.04em;
        }

        /* Contrast Table */
        .contrast-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .contrast-card {
            padding: 32px 28px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .contrast-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .contrast-card.contrast-highlight {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
        }
        .contrast-card.contrast-highlight .contrast-title {
            color: var(--accent);
        }
        .contrast-card.contrast-highlight .contrast-item {
            color: rgba(250, 248, 244, 0.85);
            border-color: rgba(201, 169, 110, 0.25);
        }
        .contrast-title {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary);
        }
        .contrast-item {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            font-size: 15px;
            line-height: 1.7;
            color: var(--text-secondary);
        }
        .contrast-item:last-child {
            border-bottom: none;
        }

        /* News */
        .news-list {
            display: grid;
            gap: 16px;
        }
        .news-item {
            display: grid;
            grid-template-columns: 100px 1fr;
            gap: 20px;
            padding: 20px 24px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .news-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--accent);
            transform: translateX(4px);
        }
        .news-date {
            font-family: var(--font-serif);
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-strong);
            letter-spacing: 0.04em;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .news-date .day {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.1;
        }
        .news-body h4 {
            font-size: 17px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            font-family: var(--font-sans);
        }
        .news-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-list {
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--accent);
        }
        .faq-item input[type="checkbox"] {
            display: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.02em;
            transition: all var(--transition);
            user-select: none;
        }
        .faq-question:hover {
            color: var(--accent-strong);
        }
        .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--accent-strong);
            transition: transform var(--transition);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
        }
        .faq-answer-inner {
            padding-bottom: 20px;
            font-size: 15px;
            line-height: 1.85;
            color: var(--text-secondary);
        }
        .faq-item input[type="checkbox"]:checked~.faq-question .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item input[type="checkbox"]:checked~.faq-answer {
            max-height: 400px;
            padding: 0 24px 4px;
        }
        .faq-item input[type="checkbox"]:checked~.faq-question {
            color: var(--accent-strong);
        }

        /* Trust Bar */
        .trust-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .trust-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 16px 20px;
            background-color: rgba(250, 248, 244, 0.06);
            border-radius: var(--radius-sm);
            border: 1px solid rgba(201, 169, 110, 0.2);
            font-size: 14px;
            color: rgba(250, 248, 244, 0.78);
            line-height: 1.6;
        }
        .trust-item-icon {
            font-size: 18px;
            color: var(--accent);
            flex-shrink: 0;
            margin-top: 2px;
        }

        /* Scenario */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .scenario-card {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .scenario-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--accent);
        }
        .scenario-image {
            aspect-ratio: 4/3;
            overflow: hidden;
            background-color: var(--border-light);
        }
        .scenario-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .scenario-card:hover .scenario-image img {
            transform: scale(1.04);
        }
        .scenario-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            justify-content: center;
        }
        .scenario-body h3 {
            font-size: 19px;
            color: var(--primary);
        }
        .scenario-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Brand Matrix */
        .brand-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 16px;
        }
        .brand-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 20px 16px;
            text-align: center;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .brand-card:hover {
            box-shadow: var(--shadow-sm);
            border-color: var(--accent);
            transform: translateY(-3px);
        }
        .brand-card-image {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            overflow: hidden;
            background-color: var(--border-light);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .brand-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .brand-card-name {
            font-family: var(--font-serif);
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.03em;
        }
        .brand-card-cat {
            font-size: 12px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
        }

        /* Sustainable */
        .sustain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .sustain-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            cursor: pointer;
        }
        .sustain-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--accent);
        }
        .sustain-card-image {
            aspect-ratio: 3/2;
            overflow: hidden;
            background-color: var(--border-light);
        }
        .sustain-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .sustain-card:hover .sustain-card-image img {
            transform: scale(1.04);
        }
        .sustain-card-body {
            padding: 20px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .sustain-card-body h3 {
            font-size: 18px;
            color: var(--primary);
        }
        .sustain-card-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Digital */
        .digital-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .digital-visual {
            aspect-ratio: 4/3;
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: var(--border-light);
            box-shadow: var(--shadow-md);
        }
        .digital-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .digital-list {
            display: grid;
            gap: 16px;
        }
        .digital-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 20px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .digital-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .digital-item-icon {
            font-size: 20px;
            color: var(--accent-strong);
            flex-shrink: 0;
        }
        .digital-item-body h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 4px;
        }
        .digital-item-body p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        /* Culture */
        .culture-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .culture-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 28px 24px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .culture-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--accent);
        }
        .culture-card h3 {
            font-size: 18px;
            color: var(--primary);
        }
        .culture-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .culture-tag {
            display: inline-block;
            align-self: flex-start;
            padding: 4px 12px;
            background-color: rgba(201, 169, 110, 0.15);
            color: var(--accent-strong);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.06em;
            border-radius: var(--radius-sm);
        }

        /* Read More */
        .readmore-list {
            display: grid;
            gap: 12px;
        }
        .readmore-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 24px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .readmore-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
            transform: translateX(4px);
        }
        .readmore-item-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.02em;
        }
        .readmore-item-arrow {
            font-size: 18px;
            color: var(--accent-strong);
            transition: transform var(--transition);
        }
        .readmore-item:hover .readmore-item-arrow {
            transform: translateX(6px);
        }

        /* Sticky Bottom CTA */
        .sticky-cta {
            position: fixed;
            bottom: 0;
            left: var(--nav-width);
            right: 0;
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 12px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            z-index: 800;
            box-shadow: 0 -4px 16px rgba(15, 33, 28, 0.25);
            border-top: 1px solid rgba(201, 169, 110, 0.3);
            transition: left 0.3s ease;
        }
        .sticky-cta-text {
            font-size: 14px;
            letter-spacing: 0.04em;
            color: rgba(250, 248, 244, 0.85);
        }
        .sticky-cta-close {
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            color: rgba(250, 248, 244, 0.6);
            font-size: 18px;
            transition: all var(--transition);
            flex-shrink: 0;
        }
        .sticky-cta-close:hover {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.15);
        }

        /* Footer */
        .footer {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 48px 0 80px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--bg);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--accent);
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(250, 248, 244, 0.6);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 16px;
            letter-spacing: 0.05em;
            font-family: var(--font-sans);
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(250, 248, 244, 0.65);
            padding: 6px 0;
            letter-spacing: 0.03em;
            transition: all var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }
        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            justify-content: space-between;
            align-items: center;
        }
        .footer-bottom-text {
            font-size: 12px;
            color: rgba(250, 248, 244, 0.45);
            letter-spacing: 0.02em;
            display: flex;
            flex-wrap: wrap;
            gap: 8px 16px;
            align-items: center;
        }
        .footer-bottom-links {
            display: flex;
            gap: 16px;
            align-items: center;
        }
        .footer-bottom-links a {
            font-size: 13px;
            color: rgba(250, 248, 244, 0.55);
            letter-spacing: 0.03em;
            transition: color var(--transition);
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            letter-spacing: 0.03em;
        }
        .breadcrumb a {
            color: var(--accent-strong);
            transition: color var(--transition);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb-sep {
            color: var(--border);
        }

        /* Responsive */
        @media (max-width: 1023px) {
            body {
                padding-left: 0;
                padding-top: 60px;
            }
            .side-nav {
                transform: translateX(-100%);
                transition: transform 0.3s ease;
                top: 60px;
                height: calc(100vh - 60px);
                z-index: 940;
            }
            .side-nav.open {
                transform: translateX(0);
            }
            .mobile-header {
                display: flex;
            }
            .sticky-cta {
                left: 0;
            }
            .container {
                padding: 0 24px;
            }
            .section {
                padding: 64px 0;
            }
            .card-grid-3,
            .card-grid-4,
            .card-grid-5,
            .brand-grid,
            .sustain-grid,
            .culture-grid,
            .trust-grid,
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .scenario-grid,
            .digital-grid,
            .contrast-wrap {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scenario-card {
                grid-template-columns: 1fr;
            }
            .hero {
                min-height: auto;
                padding: 80px 0 60px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
            .section {
                padding: 48px 0;
            }
            .card-grid-3,
            .card-grid-4,
            .card-grid-5,
            .brand-grid,
            .sustain-grid,
            .culture-grid,
            .trust-grid,
            .stats-grid,
            .card-grid-2 {
                grid-template-columns: 1fr;
            }
            .news-item {
                grid-template-columns: 1fr;
                gap: 8px;
            }
            .news-date {
                flex-direction: row;
                align-items: baseline;
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .hero {
                padding: 60px 0 40px;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-badge {
                padding: 8px 14px;
            }
            .hero-badge-num {
                font-size: 20px;
            }
            .sticky-cta {
                padding: 10px 16px;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .sticky-cta .btn {
                width: 100%;
                justify-content: center;
                padding: 10px 16px;
                font-size: 13px;
            }
            .sticky-cta-close {
                position: absolute;
                top: 8px;
                right: 12px;
            }
            .brand-grid {
                gap: 12px;
            }
            .trust-grid {
                gap: 12px;
            }
            .trust-item {
                padding: 12px 16px;
                font-size: 13px;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 24px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .btn {
                padding: 12px 20px;
                font-size: 14px;
            }
            .section-title {
                font-size: 24px;
            }
            .stat-num {
                font-size: 30px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1A2E27;
            --primary-deep: #0F211C;
            --accent: #C9A96E;
            --accent-strong: #A9824F;
            --bg: #FAF8F4;
            --bg-white: #FFFFFF;
            --text: #1F2220;
            --text-secondary: #6B6B63;
            --border: #E5DED3;
            --border-light: #EFEAE2;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 0px;
            --shadow-sm: 0 6px 24px rgba(15, 33, 28, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 33, 28, 0.12);
            --shadow-lg: 0 20px 48px rgba(15, 33, 28, 0.16);
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', Georgia, 'Times New Roman', serif;
            --font-sans: 'Source Han Sans SC', 'Noto Sans CJK SC', 'Helvetica Neue', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-width: 240px;
            --transition: 0.25s ease;
            --container-max: 1120px;
            --section-padding: 82px 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            padding-left: var(--nav-width);
            transition: padding-left 0.3s ease;
            margin: 0;
            box-sizing: border-box;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

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

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

        h1, h2, h3, h4, h5, h6, p, ul, ol {
            margin: 0;
            padding: 0;
        }

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-deep {
            background-color: var(--primary-deep);
            color: var(--bg);
        }

        .section-deep .section-title {
            color: var(--bg);
        }

        .section-deep .section-desc {
            color: rgba(250, 248, 244, 0.72);
        }

        .section-deep .section-subtitle {
            color: rgba(250, 248, 244, 0.7);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 6px;
        }

        .section-title {
            font-family: var(--font-serif);
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
            color: var(--text);
            line-height: 1.4;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 680px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }

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

        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

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

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

        .btn-light:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        /* Left Sidebar Navigation */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--primary-deep);
            color: var(--bg);
            display: flex;
            flex-direction: column;
            z-index: 900;
            padding: 32px 20px 24px;
            box-shadow: 2px 0 16px rgba(15, 33, 28, 0.2);
            transition: transform 0.3s ease;
        }

        .side-nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(201, 169, 110, 0.25);
        }

        .side-nav-logo-icon {
            width: 40px;
            height: 40px;
            background-color: var(--accent);
            color: var(--primary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .side-nav-logo-text {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--bg);
            display: flex;
            align-items: baseline;
            gap: 2px;
        }

        .side-nav-logo-text span {
            color: var(--accent);
        }

        .side-nav-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            margin-top: 24px;
            flex: 1;
        }

        .side-nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.06em;
            color: rgba(250, 248, 244, 0.78);
            border-left: 2px solid transparent;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .side-nav-link:hover {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.08);
            border-left-color: var(--accent);
        }

        .side-nav-link.active {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.12);
            border-left-color: var(--accent);
            font-weight: 600;
        }

        .side-nav-footer {
            display: flex;
            flex-direction: column;
            gap: 8px;
            padding: 20px 8px 0;
            border-top: 1px solid rgba(201, 169, 110, 0.22);
            font-size: 13px;
        }

        .side-nav-footer a {
            color: rgba(250, 248, 244, 0.62);
            transition: color var(--transition);
        }

        .side-nav-footer a:hover {
            color: var(--accent);
        }

        .side-nav-copy {
            color: rgba(250, 248, 244, 0.45);
            font-size: 12px;
        }

        /* Mobile Top Navigation */
        .mobile-nav {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 950;
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 16px 20px;
            box-shadow: 0 2px 12px rgba(15, 33, 28, 0.28);
        }

        .mobile-nav-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-nav-logo {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.06em;
            color: var(--bg);
        }

        .mobile-nav-logo span {
            color: var(--accent);
        }

        .mobile-nav-toggle {
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--bg);
            font-size: 24px;
            border: 1px solid rgba(201, 169, 110, 0.3);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .mobile-nav-toggle:hover {
            background-color: rgba(201, 169, 110, 0.1);
            border-color: var(--accent);
        }

        .mobile-nav-panel {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding-top: 16px;
        }

        .mobile-nav-panel.open {
            display: flex;
        }

        .mobile-nav-link {
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(250, 248, 244, 0.78);
            border-left: 2px solid transparent;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .mobile-nav-link:hover {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.08);
        }

        .mobile-nav-link.active {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.12);
            border-left-color: var(--accent);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

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

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

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

        /* Category Hero */
        .category-hero {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 76px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 40%;
            background: linear-gradient(135deg, transparent 0%, rgba(201, 169, 110, 0.08) 100%);
            pointer-events: none;
        }

        .category-hero .container {
            position: relative;
            z-index: 2;
        }

        .category-hero .breadcrumb {
            color: rgba(250, 248, 244, 0.6);
        }

        .category-hero .breadcrumb a {
            color: rgba(250, 248, 244, 0.6);
        }

        .category-hero .breadcrumb a:hover {
            color: var(--accent);
        }

        .category-hero .breadcrumb .separator {
            color: rgba(250, 248, 244, 0.3);
        }

        .category-hero .breadcrumb .current {
            color: var(--accent);
        }

        .category-hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(34px, 4.5vw, 46px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.35;
            margin-bottom: 16px;
        }

        .category-hero-desc {
            font-size: 17px;
            line-height: 1.9;
            color: rgba(250, 248, 244, 0.75);
            max-width: 780px;
        }

        /* Category Description Section */
        .category-desc-section {
            padding: 48px 0 0;
        }

        .category-desc-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-left: 4px solid var(--accent);
            padding: 28px 32px;
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
        }

        .category-desc-card p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
        }

        /* Card Grid */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .card-image {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background-color: #EAE5DC;
            position: relative;
        }

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

        .card:hover .card-image img {
            transform: scale(1.04);
            filter: saturate(1.05);
        }

        .card-body {
            padding: 24px 24px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .card-date {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
            margin-bottom: 8px;
        }

        .card-title {
            font-family: var(--font-serif);
            font-size: 19px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .card-desc {
            font-size: 14.5px;
            line-height: 1.75;
            color: var(--text-secondary);
            flex: 1;
        }

        .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-strong);
            margin-top: 16px;
            transition: all var(--transition);
        }

        .card-link:hover {
            color: var(--primary);
            gap: 10px;
        }

        .card-link .arrow {
            font-size: 16px;
            transition: transform var(--transition);
        }

        .card-link:hover .arrow {
            transform: translateX(2px);
        }

        /* Featured Articles */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .featured-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .featured-card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

        .featured-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
        }

        .featured-card:hover .featured-card-image img {
            transform: scale(1.03);
            filter: saturate(1.05);
        }

        .featured-card-body {
            padding: 24px 28px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card-tag {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 10px;
        }

        .featured-card-title {
            font-family: var(--font-serif);
            font-size: 21px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 10px;
        }

        .featured-card-desc {
            font-size: 15px;
            line-height: 1.8;
            color: var(--text-secondary);
        }

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

        .data-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .data-number {
            font-family: var(--font-serif);
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .data-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Related Topics List */
        .topics-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .topic-link {
            display: inline-flex;
            align-items: center;
            padding: 10px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--primary);
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .topic-link:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }

        /* Subscribe Section */
        .subscribe-section {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 64px 0;
        }

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

        .subscribe-text h2 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }

        .subscribe-text p {
            color: rgba(250, 248, 244, 0.7);
            font-size: 15px;
            line-height: 1.8;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
        }

        .subscribe-input {
            width: 260px;
            padding: 14px 18px;
            font-size: 15px;
            color: var(--text);
            background-color: var(--bg);
            border: 1px solid rgba(201, 169, 110, 0.35);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            outline: none;
        }

        .subscribe-input::placeholder {
            color: var(--text-secondary);
        }

        .subscribe-input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(201, 169, 110, 0.25);
        }

        /* Footer */
        .footer {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 64px 0 32px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 0.08em;
            color: var(--bg);
            margin-bottom: 12px;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.85;
            color: rgba(250, 248, 244, 0.62);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--accent);
            margin-bottom: 16px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(250, 248, 244, 0.68);
            margin-bottom: 10px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid rgba(201, 169, 110, 0.18);
        }

        .footer-bottom-text {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 12.5px;
            color: rgba(250, 248, 244, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12.5px;
        }

        .footer-bottom-links a {
            color: rgba(250, 248, 244, 0.62);
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media (max-width: 1023px) {
            body {
                padding-left: 0;
                padding-top: 0;
            }

            .side-nav {
                display: none;
            }

            .mobile-nav {
                display: block;
            }

            .category-hero {
                padding-top: 100px;
                padding-bottom: 56px;
            }

            .container {
                padding: 0 28px;
            }

            .card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .data-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .container {
                padding: 0 18px;
            }

            .section {
                padding: 56px 0;
            }

            .category-hero {
                padding-top: 92px;
                padding-bottom: 44px;
            }

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

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

            .data-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .data-number {
                font-size: 28px;
            }

            .subscribe-inner {
                flex-direction: column;
                align-items: stretch;
                gap: 20px;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-input {
                width: 100%;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .footer-bottom-text {
                flex-direction: column;
                gap: 6px;
            }

            .btn {
                width: 100%;
            }
        }

        @media (max-width: 520px) {
            .section-title {
                font-size: 22px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

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

            .data-card {
                padding: 20px 16px;
            }

            .card-body {
                padding: 18px 18px 16px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1A2E27;
            --primary-deep: #0F211C;
            --accent: #C9A96E;
            --accent-strong: #A9824F;
            --bg: #FAF8F4;
            --bg-white: #FFFFFF;
            --text: #1F2220;
            --text-secondary: #6B6B63;
            --border: #E5DED3;
            --border-light: #EFEAE2;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 0px;
            --shadow-sm: 0 6px 24px rgba(15, 33, 28, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 33, 28, 0.12);
            --shadow-lg: 0 20px 48px rgba(15, 33, 28, 0.16);
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', Georgia, 'Times New Roman', serif;
            --font-sans: 'Source Han Sans SC', 'Noto Sans CJK SC', 'Helvetica Neue', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-width: 240px;
            --transition: 0.25s ease;
            --container-max: 1120px;
            --section-padding: 82px 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            padding-left: var(--nav-width);
            transition: padding-left 0.3s ease;
            margin: 0;
        }

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

        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-deep {
            background-color: var(--primary-deep);
            color: var(--bg);
        }

        .section-deep .section-subtitle {
            color: rgba(250, 248, 244, 0.7);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 6px;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            margin-bottom: 12px;
            font-family: var(--font-serif);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.35;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 680px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }

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

        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

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

        .btn-light:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--primary-deep);
            color: var(--bg);
            display: flex;
            flex-direction: column;
            z-index: 900;
            padding: 32px 20px 24px;
            box-shadow: 2px 0 16px rgba(15, 33, 28, 0.2);
            transition: transform 0.3s ease;
        }

        .side-nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(201, 169, 110, 0.25);
            margin-bottom: 24px;
        }

        .side-nav-logo-icon {
            width: 40px;
            height: 40px;
            background-color: var(--accent);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-serif);
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .side-nav-logo-text {
            font-size: 18px;
            font-weight: 700;
            font-family: var(--font-serif);
            letter-spacing: 0.04em;
            line-height: 1.2;
        }

        .side-nav-logo-text span {
            color: var(--accent);
        }

        .side-nav-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
            overflow-y: auto;
        }

        .side-nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(250, 248, 244, 0.75);
            border-left: 2px solid transparent;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .side-nav-link:hover {
            color: var(--bg);
            background-color: rgba(201, 169, 110, 0.1);
            border-left-color: var(--accent);
            padding-left: 20px;
        }

        .side-nav-link.active {
            color: var(--bg);
            background-color: rgba(201, 169, 110, 0.15);
            border-left-color: var(--accent);
            font-weight: 600;
        }

        .side-nav-footer {
            display: flex;
            flex-direction: column;
            gap: 6px;
            padding-top: 16px;
            border-top: 1px solid rgba(201, 169, 110, 0.25);
            font-size: 12px;
        }

        .side-nav-footer a {
            color: rgba(250, 248, 244, 0.6);
        }

        .side-nav-footer a:hover {
            color: var(--accent);
        }

        .side-nav-copy {
            color: rgba(250, 248, 244, 0.45);
            font-size: 11px;
            margin-top: 4px;
        }

        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            right: 16px;
            z-index: 950;
            width: 44px;
            height: 44px;
            background-color: var(--primary-deep);
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            box-shadow: var(--shadow-sm);
        }

        .mobile-nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--bg);
            transition: all 0.3s ease;
        }

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

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

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

        .mobile-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background-color: rgba(15, 33, 28, 0.6);
            z-index: 880;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .mobile-overlay.show {
            opacity: 1;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

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

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

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

        .category-hero {
            padding: 72px 0 48px;
            background: linear-gradient(135deg, var(--primary-deep) 0%, var(--primary) 60%, #2A4A3E 100%);
            color: var(--bg);
            position: relative;
            overflow: hidden;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background-image: url('/assets/images/5c148b7718545d49.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            pointer-events: none;
        }

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

        .category-hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(36px, 4.5vw, 48px);
            font-weight: 700;
            letter-spacing: -0.01em;
            margin: 0 0 16px;
            line-height: 1.25;
        }

        .category-hero .category-hero-sub {
            font-size: 17px;
            color: rgba(250, 248, 244, 0.75);
            max-width: 580px;
            line-height: 1.8;
            margin: 0;
        }

        .category-hero .breadcrumb a,
        .category-hero .breadcrumb span,
        .category-hero .breadcrumb .breadcrumb-sep {
            color: rgba(250, 248, 244, 0.6);
        }

        .category-hero .breadcrumb .breadcrumb-current {
            color: var(--accent);
        }

        .category-hero .breadcrumb a:hover {
            color: var(--accent);
        }

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

        .brand-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

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

        .brand-card-image {
            width: 100%;
            aspect-ratio: 4 / 3;
            overflow: hidden;
            position: relative;
        }

        .brand-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
        }

        .brand-card:hover .brand-card-image img {
            transform: scale(1.04);
            filter: saturate(1.1);
        }

        .brand-card-body {
            padding: 22px 24px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .brand-card-title {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            margin: 0 0 6px;
            color: var(--primary);
            letter-spacing: 0.01em;
        }

        .brand-card-origin {
            font-size: 12px;
            color: var(--accent-strong);
            letter-spacing: 0.06em;
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .brand-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .brand-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-secondary);
            border-top: 1px solid var(--border-light);
            padding-top: 14px;
        }

        .brand-card-link {
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            transition: color var(--transition);
        }

        .brand-card-link:hover {
            color: var(--accent-strong);
        }

        .more-btn-wrap {
            text-align: center;
            margin-top: 40px;
        }

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

        .featured-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .featured-card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
        }

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

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

        .featured-card-body {
            padding: 20px 22px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .featured-card-title {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 8px;
            line-height: 1.4;
        }

        .featured-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 14px;
            flex: 1;
        }

        .featured-card-date {
            font-size: 12px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
        }

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

        .fact-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition);
        }

        .fact-item:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-sm);
        }

        .fact-number {
            font-family: var(--font-serif);
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
            margin-bottom: 6px;
            letter-spacing: -0.01em;
        }

        .fact-label {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .issue-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .issue-list li {
            border-bottom: 1px solid var(--border-light);
        }

        .issue-list li:last-child {
            border-bottom: none;
        }

        .issue-link {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 4px;
            font-size: 15px;
            color: var(--text);
            font-weight: 500;
            transition: all var(--transition);
        }

        .issue-link:hover {
            color: var(--accent-strong);
            padding-left: 12px;
        }

        .issue-link-arrow {
            color: var(--border);
            font-size: 18px;
            transition: color var(--transition);
        }

        .issue-link:hover .issue-link-arrow {
            color: var(--accent-strong);
        }

        .subscribe-box {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            gap: 32px;
            flex-wrap: wrap;
        }

        .subscribe-info {
            flex: 1;
            min-width: 280px;
        }

        .subscribe-info h3 {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            color: var(--primary);
            margin: 0 0 8px;
        }

        .subscribe-info p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            min-width: 280px;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            background-color: var(--bg);
            color: var(--text);
            font-size: 15px;
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 2px rgba(201, 169, 110, 0.3);
        }

        .subscribe-form input::placeholder {
            color: #9A9A92;
        }

        .footer {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 13px;
            color: rgba(250, 248, 244, 0.65);
            line-height: 1.8;
            margin: 0;
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent);
            margin: 0 0 14px;
            letter-spacing: 0.05em;
        }

        .footer-col a {
            display: block;
            font-size: 13px;
            color: rgba(250, 248, 244, 0.7);
            margin-bottom: 8px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 20px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom-text {
            display: flex;
            gap: 18px;
            font-size: 12px;
            color: rgba(250, 248, 244, 0.5);
            flex-wrap: wrap;
        }

        .footer-bottom-links {
            display: flex;
            gap: 10px;
            font-size: 12px;
            align-items: center;
        }

        .footer-bottom-links a {
            color: rgba(250, 248, 244, 0.6);
        }

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

        @media (max-width: 1023px) {
            body {
                padding-left: 0;
            }

            .side-nav {
                transform: translateX(-100%);
                width: 260px;
                box-shadow: 4px 0 32px rgba(15, 33, 28, 0.3);
            }

            .side-nav.show {
                transform: translateX(0);
            }

            .mobile-nav-toggle {
                display: flex;
            }

            .mobile-overlay {
                display: block;
            }

            .mobile-overlay.show {
                display: block;
            }

            .container {
                padding: 0 28px;
            }

            .brand-card-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .facts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .section {
                padding: 56px 0;
            }

            .category-hero {
                padding: 60px 0 40px;
            }

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

        @media (max-width: 767px) {
            body {
                padding-left: 0;
            }

            .container {
                padding: 0 18px;
            }

            .brand-card-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .featured-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }

            .facts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }

            .fact-number {
                font-size: 26px;
            }

            .section {
                padding: 44px 0;
            }

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

            .section-title {
                font-size: 24px;
            }

            .category-hero {
                padding: 48px 0 32px;
            }

            .category-hero h1 {
                font-size: clamp(28px, 6vw, 36px);
            }

            .category-hero .category-hero-sub {
                font-size: 15px;
            }

            .subscribe-box {
                padding: 28px 20px;
                flex-direction: column;
                gap: 20px;
                align-items: stretch;
            }

            .subscribe-form {
                flex-direction: row;
            }

            .subscribe-form input {
                min-width: 0;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .footer-bottom-text {
                gap: 10px;
                font-size: 11px;
            }
        }

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

            .subscribe-form {
                flex-direction: column;
            }

            .subscribe-form input {
                min-width: 0;
                width: 100%;
            }

            .breadcrumb {
                font-size: 12px;
            }
        }

        @media (min-width: 1024px) {
            .side-nav {
                transform: translateX(0);
            }
            .mobile-nav-toggle {
                display: none;
            }
            .mobile-overlay {
                display: none;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #1A2E27;
            --primary-deep: #0F211C;
            --accent: #C9A96E;
            --accent-strong: #A9824F;
            --bg: #FAF8F4;
            --bg-white: #FFFFFF;
            --text: #1F2220;
            --text-secondary: #6B6B63;
            --border: #E5DED3;
            --border-light: #EFEAE2;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 0px;
            --shadow-sm: 0 6px 24px rgba(15, 33, 28, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 33, 28, 0.12);
            --shadow-lg: 0 20px 48px rgba(15, 33, 28, 0.16);
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', Georgia, 'Times New Roman', serif;
            --font-sans: 'Source Han Sans SC', 'Noto Sans CJK SC', 'Helvetica Neue', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-width: 240px;
            --transition: 0.25s ease;
            --container-max: 1120px;
            --section-padding: 82px 0;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            padding-left: var(--nav-width);
            transition: padding-left 0.3s ease;
            min-height: 100vh;
        }

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

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

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-deep {
            background-color: var(--primary-deep);
            color: var(--bg);
        }

        .section-deep .section-subtitle {
            color: rgba(250, 248, 244, 0.7);
        }

        .section-deep .section-desc {
            color: rgba(250, 248, 244, 0.7);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 6px;
        }

        .section-title {
            font-family: var(--font-serif);
            font-size: clamp(26px, 3vw, 34px);
            font-weight: 600;
            letter-spacing: -0.01em;
            margin-bottom: 12px;
            color: var(--primary);
            line-height: 1.35;
        }

        .section-deep .section-title {
            color: var(--bg);
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 680px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }

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

        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

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

        .btn-light:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--primary-deep);
            color: var(--bg);
            display: flex;
            flex-direction: column;
            z-index: 900;
            padding: 32px 20px 24px;
            box-shadow: 2px 0 16px rgba(15, 33, 28, 0.2);
            transition: transform 0.3s ease;
        }

        .side-nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(201, 169, 110, 0.25);
            margin-bottom: 28px;
        }

        .side-nav-logo-icon {
            width: 40px;
            height: 40px;
            background-color: var(--accent);
            color: var(--primary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .side-nav-logo-text {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 600;
            letter-spacing: 0.02em;
            line-height: 1.2;
            color: var(--bg);
        }

        .side-nav-logo-text span {
            color: var(--accent);
        }

        .side-nav-menu {
            display: flex;
            flex-direction: column;
            gap: 4px;
            flex: 1;
            overflow-y: auto;
        }

        .side-nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            letter-spacing: 0.03em;
            border-radius: var(--radius-sm);
            color: rgba(250, 248, 244, 0.75);
            font-weight: 400;
            position: relative;
            transition: all var(--transition);
        }

        .side-nav-link:hover {
            background-color: rgba(201, 169, 110, 0.12);
            color: var(--accent);
            padding-left: 20px;
        }

        .side-nav-link.active {
            background-color: rgba(201, 169, 110, 0.18);
            color: var(--accent);
            font-weight: 600;
        }

        .side-nav-link.active::before {
            content: '';
            position: absolute;
            left: 0;
            top: 50%;
            transform: translateY(-50%);
            width: 3px;
            height: 20px;
            background-color: var(--accent);
            border-radius: 2px;
        }

        .side-nav-footer {
            padding-top: 20px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            display: flex;
            flex-direction: column;
            gap: 6px;
            font-size: 12px;
            color: rgba(250, 248, 244, 0.45);
        }

        .side-nav-footer a {
            color: rgba(250, 248, 244, 0.5);
            font-size: 12px;
        }

        .side-nav-footer a:hover {
            color: var(--accent);
        }

        .side-nav-copy {
            margin-top: 4px;
            font-size: 11px;
            color: rgba(250, 248, 244, 0.35);
        }

        .mobile-nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            right: 16px;
            z-index: 950;
            width: 44px;
            height: 44px;
            background-color: var(--primary-deep);
            color: var(--bg);
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
        }

        .mobile-nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background-color: var(--bg);
            transition: all var(--transition);
            transform-origin: center;
        }

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

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

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

        .side-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background-color: rgba(15, 33, 28, 0.5);
            z-index: 890;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

        .side-nav-overlay.active {
            opacity: 1;
        }

        .main-content {
            min-height: 100vh;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }

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

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

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

        .category-hero {
            padding: 56px 0 40px;
            background-color: var(--bg);
            border-bottom: 1px solid var(--border-light);
        }

        .category-hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .category-hero .lead {
            font-size: 17px;
            line-height: 1.9;
            color: var(--text-secondary);
            max-width: 720px;
        }

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

        .card-grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .card {
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

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

        .card-image {
            width: 100%;
            aspect-ratio: 4/3;
            overflow: hidden;
            position: relative;
            background-color: var(--border-light);
        }

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

        .card:hover .card-image img {
            transform: scale(1.04);
            filter: saturate(1.1);
        }

        .card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .card-tag {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 0.06em;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 10px;
            text-transform: uppercase;
        }

        .card-title {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            color: var(--primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .card-desc {
            font-size: 14px;
            line-height: 1.75;
            color: var(--text-secondary);
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
            font-size: 13px;
            color: var(--text-secondary);
        }

        .card-meta .date {
            letter-spacing: 0.02em;
        }

        .card-meta .read-link {
            color: var(--accent-strong);
            font-weight: 600;
            font-size: 13px;
            transition: color var(--transition);
        }

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

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

        .fact-item {
            background-color: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(201, 169, 110, 0.25);
            border-radius: var(--radius-sm);
            padding: 28px 24px;
            text-align: center;
        }

        .fact-number {
            font-family: var(--font-serif);
            font-size: 36px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .fact-label {
            font-size: 14px;
            color: rgba(250, 248, 244, 0.7);
            line-height: 1.5;
        }

        .topic-list {
            list-style: none;
            padding: 0;
        }

        .topic-list li {
            padding: 16px 0;
            border-bottom: 1px solid var(--border-light);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
        }

        .topic-list li:last-child {
            border-bottom: none;
        }

        .topic-list a {
            font-size: 16px;
            color: var(--text);
            font-weight: 500;
            transition: color var(--transition), padding-left var(--transition);
            flex: 1;
        }

        .topic-list a:hover {
            color: var(--accent-strong);
            padding-left: 8px;
        }

        .topic-list .arrow {
            color: var(--accent);
            font-weight: 700;
            flex-shrink: 0;
            font-size: 18px;
        }

        .subscribe-box {
            background-color: var(--primary-deep);
            border-radius: var(--radius-sm);
            padding: 48px 40px;
            text-align: center;
            color: var(--bg);
        }

        .subscribe-box h3 {
            font-family: var(--font-serif);
            font-size: 26px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--bg);
        }

        .subscribe-box p {
            font-size: 15px;
            color: rgba(250, 248, 244, 0.7);
            line-height: 1.8;
            max-width: 560px;
            margin: 0 auto 28px;
        }

        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }

        .subscribe-form input {
            flex: 1;
            padding: 14px 20px;
            font-size: 15px;
            background-color: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(201, 169, 110, 0.4);
            border-radius: var(--radius-sm);
            color: var(--bg);
            outline: none;
            transition: border-color var(--transition);
        }

        .subscribe-form input::placeholder {
            color: rgba(250, 248, 244, 0.5);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            border-width: 2px;
        }

        .footer {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 64px 0 32px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 48px;
        }

        .footer-brand {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--bg);
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(250, 248, 244, 0.6);
            max-width: 340px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.06em;
            color: var(--accent);
            margin-bottom: 18px;
            text-transform: uppercase;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(250, 248, 244, 0.7);
            margin-bottom: 10px;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .footer-bottom-text {
            display: flex;
            flex-direction: column;
            gap: 4px;
            font-size: 13px;
            color: rgba(250, 248, 244, 0.5);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }

        .footer-bottom-links a {
            color: rgba(250, 248, 244, 0.6);
            transition: color var(--transition);
        }

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

        .more-btn-wrapper {
            text-align: center;
            margin-top: 40px;
        }

        @media (max-width: 1024px) {
            body {
                padding-left: 0;
            }

            .side-nav {
                transform: translateX(-100%);
                width: 280px;
                box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
            }

            .side-nav.open {
                transform: translateX(0);
            }

            .mobile-nav-toggle {
                display: flex;
            }

            .side-nav-overlay {
                display: block;
                pointer-events: none;
            }

            .side-nav-overlay.active {
                pointer-events: auto;
            }

            .container {
                padding: 0 24px;
            }

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

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

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

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }

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

            .card-grid-2 {
                grid-template-columns: 1fr;
            }

            .fact-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .subscribe-box {
                padding: 32px 20px;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .category-hero {
                padding: 40px 0 28px;
            }

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

            .container {
                padding: 0 16px;
            }
        }

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

            .fact-item {
                padding: 20px 16px;
            }

            .fact-number {
                font-size: 28px;
            }

            .section-title {
                font-size: 22px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1A2E27;
            --primary-deep: #0F211C;
            --accent: #C9A96E;
            --accent-strong: #A9824F;
            --bg: #FAF8F4;
            --bg-white: #FFFFFF;
            --text: #1F2220;
            --text-secondary: #6B6B63;
            --border: #E5DED3;
            --border-light: #EFEAE2;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 0px;
            --shadow-sm: 0 6px 24px rgba(15, 33, 28, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 33, 28, 0.12);
            --shadow-lg: 0 20px 48px rgba(15, 33, 28, 0.16);
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', Georgia, 'Times New Roman', serif;
            --font-sans: 'Source Han Sans SC', 'Noto Sans CJK SC', 'Helvetica Neue', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-width: 240px;
            --transition: 0.25s ease;
            --container-max: 1120px;
            --section-padding: 82px 0;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            padding-left: var(--nav-width);
            transition: padding-left 0.3s ease;
            min-height: 100vh;
        }

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

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

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

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

        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .section-deep {
            background-color: var(--primary-deep);
            color: var(--bg);
        }

        .section-deep .section-subtitle {
            color: rgba(250, 248, 244, 0.7);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }

        .section-head {
            margin-bottom: 48px;
        }

        .section-head-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 6px;
        }

        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            margin-bottom: 12px;
            font-family: var(--font-serif);
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 680px;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }

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

        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }

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

        .btn-light:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-strong);
            outline-offset: 3px;
        }

        /* Left Sidebar Navigation */
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--primary-deep);
            color: var(--bg);
            display: flex;
            flex-direction: column;
            z-index: 900;
            padding: 32px 20px 24px;
            box-shadow: 2px 0 16px rgba(15, 33, 28, 0.2);
            transition: transform 0.3s ease;
        }

        .side-nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(201, 169, 110, 0.25);
            color: var(--bg);
        }

        .side-nav-logo:hover {
            color: var(--accent);
        }

        .side-nav-logo-icon {
            width: 44px;
            height: 44px;
            background-color: var(--accent);
            color: var(--primary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            font-weight: 700;
            font-family: var(--font-serif);
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .side-nav-logo-text {
            font-size: 18px;
            font-weight: 600;
            letter-spacing: 0.03em;
            font-family: var(--font-serif);
            line-height: 1.3;
        }

        .side-nav-logo-text span {
            color: var(--accent);
        }

        .side-nav-menu {
            flex: 1;
            padding-top: 24px;
            display: flex;
            flex-direction: column;
            gap: 4px;
            overflow-y: auto;
        }

        .side-nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 15px;
            font-weight: 500;
            letter-spacing: 0.05em;
            color: rgba(250, 248, 244, 0.75);
            border-left: 3px solid transparent;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .side-nav-link:hover {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.08);
            border-left-color: var(--accent);
        }

        .side-nav-link.active {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.12);
            border-left-color: var(--accent);
            font-weight: 600;
        }

        .side-nav-footer {
            padding-top: 20px;
            border-top: 1px solid rgba(201, 169, 110, 0.25);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .side-nav-footer a {
            font-size: 13px;
            color: rgba(250, 248, 244, 0.55);
            letter-spacing: 0.04em;
        }

        .side-nav-footer a:hover {
            color: var(--accent);
        }

        .side-nav-copy {
            font-size: 12px;
            color: rgba(250, 248, 244, 0.4);
            letter-spacing: 0.04em;
        }

        /* Mobile nav toggle */
        .nav-toggle {
            display: none;
            position: fixed;
            top: 16px;
            right: 16px;
            z-index: 950;
            width: 44px;
            height: 44px;
            background-color: var(--primary);
            color: var(--bg);
            border-radius: var(--radius-sm);
            align-items: center;
            justify-content: center;
            font-size: 24px;
            box-shadow: var(--shadow-sm);
            cursor: pointer;
            transition: all var(--transition);
        }

        .nav-toggle:hover {
            background-color: var(--accent);
            color: var(--primary);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--accent-strong);
            transition: color var(--transition);
        }

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

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

        .breadcrumb-current {
            color: var(--text-secondary);
        }

        /* Category Hero Section */
        .category-hero {
            padding: 56px 0 20px;
            position: relative;
            background-color: var(--bg);
        }

        .category-hero h1 {
            font-size: clamp(30px, 4vw, 42px);
            font-family: var(--font-serif);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .category-hero-search {
            max-width: 480px;
            margin-top: 24px;
            display: flex;
            gap: 0;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            background-color: var(--bg-white);
            box-shadow: var(--shadow-sm);
        }

        .category-hero-search input {
            flex: 1;
            border: none;
            padding: 14px 18px;
            font-size: 14px;
            background: transparent;
            color: var(--text);
            outline: none;
        }

        .category-hero-search input::placeholder {
            color: var(--text-secondary);
            opacity: 0.7;
        }

        .category-hero-search button {
            background-color: var(--primary);
            color: var(--bg);
            padding: 0 20px;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition);
        }

        .category-hero-search button:hover {
            background-color: var(--accent);
            color: var(--primary);
        }

        .category-hero-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 16px;
        }

        .category-hero-tag {
            display: inline-block;
            padding: 6px 16px;
            font-size: 13px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: 20px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

        .category-hero-tag:hover {
            border-color: var(--accent);
            color: var(--accent-strong);
            background-color: rgba(201, 169, 110, 0.05);
        }

        /* Category Intro */
        .category-intro {
            padding: 32px 0 48px;
        }

        .category-intro p {
            font-size: 16px;
            line-height: 1.9;
            color: var(--text-secondary);
            max-width: 780px;
        }

        /* News Card Grid */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 0;
        }

        .news-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .news-card-img {
            aspect-ratio: 4 / 3;
            overflow: hidden;
            background-color: var(--border-light);
            position: relative;
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
        }

        .news-card:hover .news-card-img img {
            transform: scale(1.04);
            filter: saturate(1.1);
        }

        .news-card-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card-date {
            font-size: 13px;
            color: var(--accent-strong);
            letter-spacing: 0.06em;
            margin-bottom: 10px;
            font-weight: 500;
        }

        .news-card-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 10px;
            color: var(--text);
            font-family: var(--font-serif);
        }

        .news-card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
            flex: 1;
            margin-bottom: 16px;
        }

        .news-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--accent-strong);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
            align-self: flex-start;
        }

        .news-card-link:hover {
            color: var(--primary);
            gap: 10px;
        }

        /* Load More */
        .load-more-wrap {
            text-align: center;
            padding: 32px 0 0;
        }

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

        .featured-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .featured-card-img {
            aspect-ratio: 3 / 2;
            overflow: hidden;
            background-color: var(--border-light);
        }

        .featured-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
        }

        .featured-card:hover .featured-card-img img {
            transform: scale(1.04);
            filter: saturate(1.1);
        }

        .featured-card-body {
            padding: 20px 22px 24px;
        }

        .featured-card-tag {
            display: inline-block;
            font-size: 12px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            padding: 4px 12px;
            background-color: rgba(201, 169, 110, 0.1);
            border-radius: 20px;
            margin-bottom: 12px;
        }

        .featured-card-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            font-family: var(--font-serif);
            margin-bottom: 8px;
        }

        .featured-card-desc {
            font-size: 14px;
            line-height: 1.7;
            color: var(--text-secondary);
        }

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

        .fact-item {
            text-align: center;
            padding: 28px 16px;
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .fact-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        .fact-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--accent-strong);
            font-family: var(--font-serif);
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .fact-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Related Topics */
        .related-list {
            list-style: none;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 12px;
        }

        .related-list li {
            padding: 16px 20px;
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }

        .related-list li:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        .related-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
        }

        .related-list a:hover {
            color: var(--accent-strong);
        }

        .related-list .arrow {
            color: var(--accent-strong);
            font-size: 18px;
            transition: transform var(--transition);
        }

        .related-list a:hover .arrow {
            transform: translateX(4px);
        }

        /* Subscribe Section */
        .subscribe-wrap {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 48px 40px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .subscribe-info h3 {
            font-size: 24px;
            font-family: var(--font-serif);
            font-weight: 700;
            margin-bottom: 8px;
        }

        .subscribe-info p {
            font-size: 14px;
            color: rgba(250, 248, 244, 0.7);
            max-width: 480px;
            line-height: 1.7;
        }

        .subscribe-form {
            display: flex;
            gap: 0;
            flex: 1;
            max-width: 460px;
            min-width: 300px;
        }

        .subscribe-form input {
            flex: 1;
            padding: 14px 18px;
            border: 1px solid rgba(201, 169, 110, 0.3);
            border-radius: var(--radius-sm) 0 0 var(--radius-sm);
            background-color: rgba(250, 248, 244, 0.08);
            color: var(--bg);
            font-size: 14px;
            outline: none;
            transition: border-color var(--transition);
        }

        .subscribe-form input::placeholder {
            color: rgba(250, 248, 244, 0.45);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
        }

        .subscribe-form button {
            background-color: var(--accent);
            color: var(--primary);
            padding: 0 28px;
            font-size: 15px;
            font-weight: 600;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            background-color: var(--accent-strong);
            color: var(--bg);
        }

        /* Footer */
        .footer {
            background-color: var(--primary-deep);
            color: var(--bg);
            padding: 56px 0 20px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            font-family: var(--font-serif);
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .footer-brand span {
            color: var(--accent);
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(250, 248, 244, 0.65);
            max-width: 360px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: var(--accent);
            letter-spacing: 0.06em;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(250, 248, 244, 0.65);
            padding: 6px 0;
            transition: color var(--transition);
        }

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

        .footer-bottom {
            padding-top: 24px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom-text {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: rgba(250, 248, 244, 0.55);
        }

        .footer-bottom-links {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
        }

        .footer-bottom-links a {
            color: rgba(250, 248, 244, 0.55);
            transition: color var(--transition);
        }

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

        /* Responsive */
        @media screen and (max-width: 1100px) {
            .container {
                padding: 0 24px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .facts-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
            }
        }

        @media screen and (max-width: 1024px) {
            :root {
                --nav-width: 0px;
            }
            body {
                padding-left: 0;
            }
            .side-nav {
                transform: translateX(-100%);
                width: 260px;
            }
            .side-nav.open {
                transform: translateX(0);
            }
            .nav-toggle {
                display: flex;
            }
            .container {
                padding: 0 20px;
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-list {
                grid-template-columns: 1fr;
            }
        }

        @media screen and (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
            .category-hero {
                padding: 32px 0 12px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .facts-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-list {
                grid-template-columns: 1fr;
            }
            .subscribe-wrap {
                padding: 32px 24px;
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-form {
                width: 100%;
                min-width: 0;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media screen and (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 22px;
            }
            .news-card-body {
                padding: 16px 18px 20px;
            }
            .facts-row {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .fact-number {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom-text {
                flex-direction: column;
                gap: 8px;
            }
            .category-hero-search {
                flex-direction: row;
            }
            .subscribe-form {
                flex-direction: column;
                border-radius: var(--radius-sm);
                overflow: hidden;
            }
            .subscribe-form input {
                border-radius: var(--radius-sm) var(--radius-sm) 0 0;
            }
            .subscribe-form button {
                border-radius: 0 0 var(--radius-sm) var(--radius-sm);
                padding: 12px 20px;
                width: 100%;
            }
        }

        @media screen and (max-width: 380px) {
            .category-hero-tags {
                gap: 6px;
            }
            .category-hero-tag {
                font-size: 12px;
                padding: 5px 12px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #1A2E27;
            --primary-deep: #0F211C;
            --accent: #C9A96E;
            --accent-strong: #A9824F;
            --bg: #FAF8F4;
            --bg-white: #FFFFFF;
            --text: #1F2220;
            --text-secondary: #6B6B63;
            --border: #E5DED3;
            --border-light: #EFEAE2;
            --radius-sm: 2px;
            --radius-md: 4px;
            --radius-lg: 0px;
            --shadow-sm: 0 6px 24px rgba(15, 33, 28, 0.06);
            --shadow-md: 0 12px 32px rgba(15, 33, 28, 0.12);
            --shadow-lg: 0 20px 48px rgba(15, 33, 28, 0.16);
            --font-serif: 'Source Han Serif SC', 'Noto Serif CJK SC', 'Songti SC', Georgia, 'Times New Roman', serif;
            --font-sans: 'Source Han Sans SC', 'Noto Sans CJK SC', 'Helvetica Neue', 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --nav-width: 240px;
            --transition: 0.25s ease;
            --container-max: 1120px;
            --section-padding: 72px 0;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text);
            background-color: var(--bg);
            padding-left: var(--nav-width);
            transition: padding-left 0.3s ease;
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 40px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background-color: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }
        .section-deep {
            background-color: var(--primary-deep);
            color: var(--bg);
        }
        .section-deep .section-subtitle {
            color: rgba(250, 248, 244, 0.7);
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            max-width: 680px;
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-head-tag {
            display: inline-block;
            font-size: 13px;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--accent-strong);
            font-weight: 600;
            margin-bottom: 12px;
            border-bottom: 1px solid var(--accent);
            padding-bottom: 6px;
        }
        .section-title {
            font-size: clamp(26px, 3vw, 34px);
            margin-bottom: 12px;
            font-family: var(--font-serif);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }
        .section-desc {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 680px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 32px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.04em;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            border: 1px solid transparent;
            text-align: center;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-primary {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }
        .btn-outline {
            background-color: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-outline:hover {
            background-color: var(--primary);
            color: var(--bg);
            border-color: var(--primary);
            transform: translateY(-1px);
            box-shadow: var(--shadow-sm);
        }
        .btn-light {
            background-color: var(--bg);
            color: var(--primary);
            border-color: var(--bg);
        }
        .btn-light:hover {
            background-color: var(--accent);
            color: var(--primary);
            border-color: var(--accent);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 10px 20px;
            font-size: 14px;
        }
        .side-nav {
            position: fixed;
            top: 0;
            left: 0;
            width: var(--nav-width);
            height: 100vh;
            background-color: var(--primary-deep);
            color: var(--bg);
            display: flex;
            flex-direction: column;
            z-index: 900;
            padding: 32px 20px 24px;
            box-shadow: 2px 0 16px rgba(15, 33, 28, 0.2);
            transition: transform 0.3s ease;
        }
        .side-nav-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 0 8px 28px;
            border-bottom: 1px solid rgba(201, 169, 110, 0.25);
            margin-bottom: 20px;
        }
        .side-nav-logo-icon {
            width: 40px;
            height: 40px;
            background-color: var(--accent);
            color: var(--primary-deep);
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            border-radius: 50%;
            flex-shrink: 0;
        }
        .side-nav-logo-text {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.02em;
            line-height: 1.2;
            color: var(--bg);
        }
        .side-nav-logo-text span {
            color: var(--accent);
        }
        .side-nav-menu {
            display: flex;
            flex-direction: column;
            gap: 6px;
            flex: 1;
        }
        .side-nav-link {
            display: flex;
            align-items: center;
            padding: 12px 14px;
            font-size: 15px;
            font-weight: 500;
            color: rgba(250, 248, 244, 0.72);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            letter-spacing: 0.03em;
        }
        .side-nav-link:hover {
            color: var(--bg);
            background-color: rgba(201, 169, 110, 0.12);
        }
        .side-nav-link.active {
            color: var(--accent);
            background-color: rgba(201, 169, 110, 0.18);
            font-weight: 600;
        }
        .side-nav-footer {
            display: flex;
            flex-direction: column;
            gap: 4px;
            padding-top: 20px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            font-size: 12px;
            color: rgba(250, 248, 244, 0.5);
        }
        .side-nav-footer a {
            color: rgba(250, 248, 244, 0.55);
            font-size: 13px;
        }
        .side-nav-footer a:hover {
            color: var(--accent);
        }
        .side-nav-copy {
            font-size: 12px;
            color: rgba(250, 248, 244, 0.45);
            margin-top: 6px;
        }
        .mobile-toggle {
            display: none;
            position: fixed;
            top: 16px;
            right: 20px;
            z-index: 1000;
            width: 44px;
            height: 44px;
            background-color: var(--primary-deep);
            color: var(--bg);
            border-radius: var(--radius-sm);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 5px;
            box-shadow: var(--shadow-sm);
            border: 1px solid rgba(201, 169, 110, 0.3);
        }
        .mobile-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background-color: var(--bg);
            transition: all 0.3s ease;
        }
        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .breadcrumb-bar {
            padding: 32px 0 0;
            font-size: 14px;
            color: var(--text-secondary);
        }
        .breadcrumb-bar a {
            color: var(--text-secondary);
        }
        .breadcrumb-bar a:hover {
            color: var(--accent-strong);
        }
        .breadcrumb-sep {
            margin: 0 8px;
            color: var(--border);
        }
        .category-hero {
            padding: 48px 0 16px;
        }
        .category-hero h1 {
            font-family: var(--font-serif);
            font-size: clamp(32px, 4vw, 44px);
            font-weight: 700;
            letter-spacing: -0.01em;
            line-height: 1.25;
            color: var(--primary-deep);
            margin-bottom: 16px;
        }
        .category-hero p {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.9;
            max-width: 760px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .article-card {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .article-card-img {
            aspect-ratio: 4/3;
            overflow: hidden;
            background-color: var(--border-light);
        }
        .article-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
            filter: saturate(0.92);
        }
        .article-card:hover .article-card-img img {
            transform: scale(1.04);
            filter: saturate(1.05);
        }
        .article-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card-meta {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }
        .article-card-title {
            font-family: var(--font-serif);
            font-size: 19px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--primary-deep);
            margin-bottom: 10px;
        }
        .article-card-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }
        .article-card-link {
            color: var(--accent-strong);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.04em;
            transition: color var(--transition);
        }
        .article-card-link:hover {
            color: var(--primary);
        }
        .view-more-area {
            display: flex;
            justify-content: center;
            margin-top: 40px;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background-color: var(--primary-deep);
            color: var(--bg);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .feature-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .feature-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease, filter 0.5s ease;
            filter: saturate(0.9);
        }
        .feature-card:hover .feature-card-img img {
            transform: scale(1.04);
            filter: saturate(1.05);
        }
        .feature-card-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card-tag {
            font-size: 12px;
            letter-spacing: 0.1em;
            text-transform: uppercase;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 10px;
        }
        .feature-card-title {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 10px;
        }
        .feature-card-desc {
            font-size: 14px;
            color: rgba(250, 248, 244, 0.75);
            line-height: 1.75;
            flex: 1;
            margin-bottom: 16px;
        }
        .feature-card-link {
            color: var(--accent);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.04em;
        }
        .feature-card-link:hover {
            color: var(--bg);
        }
        .data-facts-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .data-fact-item {
            background-color: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .data-fact-item:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .data-fact-num {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 700;
            color: var(--primary-deep);
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 8px;
        }
        .data-fact-label {
            font-size: 14px;
            color: var(--text-secondary);
            letter-spacing: 0.04em;
        }
        .related-list {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            list-style: none;
            padding: 0;
        }
        .related-list a {
            display: inline-block;
            padding: 10px 20px;
            background-color: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
            letter-spacing: 0.03em;
        }
        .related-list a:hover {
            border-color: var(--primary);
            color: var(--accent-strong);
            background-color: rgba(201, 169, 110, 0.08);
        }
        .subscribe-box {
            background-color: var(--primary-deep);
            color: var(--bg);
            border-radius: var(--radius-sm);
            padding: 48px 40px;
            display: flex;
            flex-direction: column;
            gap: 20px;
            align-items: flex-start;
        }
        .subscribe-box h3 {
            font-family: var(--font-serif);
            font-size: 24px;
            font-weight: 600;
            line-height: 1.4;
        }
        .subscribe-box p {
            font-size: 15px;
            color: rgba(250, 248, 244, 0.7);
            max-width: 560px;
            line-height: 1.8;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            width: 100%;
            max-width: 560px;
            flex-wrap: wrap;
        }
        .subscribe-form input[type="email"] {
            flex: 1;
            min-width: 240px;
            padding: 14px 18px;
            border: 1px solid rgba(201, 169, 110, 0.35);
            border-radius: var(--radius-sm);
            background-color: rgba(250, 248, 244, 0.06);
            color: var(--bg);
            font-size: 15px;
            outline: none;
            transition: border-color var(--transition);
        }
        .subscribe-form input[type="email"]::placeholder {
            color: rgba(250, 248, 244, 0.4);
        }
        .subscribe-form input[type="email"]:focus {
            border-color: var(--accent);
        }
        .footer {
            background-color: var(--primary-deep);
            color: rgba(250, 248, 244, 0.75);
            padding: 48px 0 28px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            color: var(--bg);
            margin-bottom: 12px;
        }
        .footer-brand span {
            color: var(--accent);
        }
        .footer-desc {
            font-size: 14px;
            color: rgba(250, 248, 244, 0.55);
            line-height: 1.8;
            max-width: 320px;
        }
        .footer-col {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--bg);
            margin-bottom: 4px;
            letter-spacing: 0.04em;
        }
        .footer-col a {
            font-size: 14px;
            color: rgba(250, 248, 244, 0.55);
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid rgba(201, 169, 110, 0.2);
            font-size: 13px;
            color: rgba(250, 248, 244, 0.45);
        }
        .footer-bottom-text {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .footer-bottom-links {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .footer-bottom-links a {
            color: rgba(250, 248, 244, 0.55);
            font-size: 13px;
        }
        .footer-bottom-links a:hover {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            body {
                padding-left: 0;
            }
            .side-nav {
                transform: translateX(-100%);
            }
            .side-nav.open {
                transform: translateX(0);
            }
            .mobile-toggle {
                display: flex;
            }
            .container {
                padding: 0 28px;
            }
            .card-grid,
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .data-facts-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1.5fr 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
            .section {
                padding: 56px 0;
            }
            .card-grid,
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .data-facts-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .data-fact-num {
                font-size: 26px;
            }
            .breadcrumb-bar {
                padding: 24px 0 0;
                font-size: 13px;
            }
            .category-hero {
                padding: 36px 0 12px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .subscribe-box {
                padding: 32px 24px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input[type="email"] {
                min-width: auto;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .footer-bottom-text {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .data-facts-grid {
                grid-template-columns: 1fr;
            }
            .article-card-body {
                padding: 18px;
            }
            .article-card-title {
                font-size: 17px;
            }
            .feature-card-body {
                padding: 18px;
            }
            .feature-card-title {
                font-size: 18px;
            }
            .btn {
                padding: 12px 24px;
                font-size: 14px;
                width: 100%;
            }
            .section-head {
                margin-bottom: 32px;
            }
            .section-title {
                font-size: 24px;
            }
        }