/* roulang page: index */
:root {
            --color-primary: #1A3A2A;
            --color-primary-dark: #10251B;
            --color-accent: #E6772E;
            --color-accent-dark: #C96221;
            --color-bg: #FAFAF7;
            --color-card: #FFFFFF;
            --color-text: #1C1C1E;
            --color-text-secondary: #5A5A5A;
            --color-border: #E8E8E4;
            --color-success: #2E5A41;
            --color-danger: #A33A2A;
            --color-table-header: #F5F5F2;
            --font-serif: 'Noto Serif SC', 'Source Han Serif', 'Songti SC', 'SimSun', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Menlo', 'Courier New', monospace;
            --radius-card: 8px;
            --radius-data-card: 4px;
            --radius-btn: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.09);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
            --container-max: 1200px;
            --nav-height: 64px;
            --transition-base: 0.2s ease;
            --transition-hover: 0.3s ease;
            --spacing-section: 64px;
            --spacing-card-gap-x: 16px;
            --spacing-card-gap-y: 24px;
        }

        *,
        *::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(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
        }

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

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

        a:hover {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
        }

        input {
            font-family: var(--font-sans);
        }

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

        section,
        .section {
            padding: var(--spacing-section) 0;
        }
        .section--alt {
            background-color: #F4F4F0;
        }
        .section--white {
            background-color: var(--color-card);
        }
        .section--tight {
            padding: 40px 0;
        }

        .section__header {
            margin-bottom: 32px;
        }
        .section__label {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
            letter-spacing: 0.08em;
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .section__title {
            font-family: var(--font-serif);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            letter-spacing: 0.01em;
        }
        .section__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-top: 10px;
            max-width: 720px;
            line-height: 1.8;
        }

        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            white-space: nowrap;
            border: 0;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }
        .site-header .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .logo__icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            border-radius: 4px;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
        }
        .main-nav__item {
            position: relative;
        }
        .main-nav__link {
            display: block;
            padding: 20px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            letter-spacing: 0.02em;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .main-nav__link:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .main-nav__link.active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .main-nav__link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px 2px 0 0;
        }
        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            padding: 8px;
        }
        .nav-toggle__bar {
            display: block;
            width: 100%;
            height: 2px;
            background: var(--color-primary);
            border-radius: 1px;
            transition: transform var(--transition-base), opacity var(--transition-base);
        }
        .nav-toggle__bar--top.nav-toggle__bar--open {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle__bar--middle.nav-toggle__bar--open {
            opacity: 0;
        }
        .nav-toggle__bar--bottom.nav-toggle__bar--open {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .hero {
            padding-top: calc(var(--nav-height) + 40px);
            padding-bottom: 48px;
            background: linear-gradient(180deg, #F0F0EA 0%, var(--color-bg) 100%);
            position: relative;
            overflow: hidden;
        }
        .hero__inner {
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 32px;
            align-items: center;
            min-height: 440px;
        }
        .hero__content {
            padding-right: 8px;
        }
        .hero__eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            letter-spacing: 0.12em;
            text-transform: uppercase;
            background: rgba(230, 119, 46, 0.08);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 16px;
        }
        .hero__title {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary);
            letter-spacing: 0.015em;
            margin-bottom: 16px;
        }
        .hero__subtitle {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin-bottom: 24px;
            max-width: 480px;
        }
        .hero__cta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 500;
            border-radius: var(--radius-btn);
            letter-spacing: 0.02em;
            transition: all var(--transition-hover);
            white-space: nowrap;
            text-decoration: none;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #fff;
        }
        .btn--primary:hover {
            background: var(--color-accent-dark);
            color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
            box-shadow: 0 4px 12px rgba(230, 119, 46, 0.25);
        }
        .btn--secondary {
            background: transparent;
            color: var(--color-primary);
            border: 1.5px solid var(--color-primary);
        }
        .btn--secondary:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
        }
        .hero__stats {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .hero__stat-item {
            text-align: left;
        }
        .hero__stat-number {
            font-family: var(--font-mono);
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }
        .hero__stat-label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 2px;
        }
        .hero__image-wrapper {
            position: relative;
            border-radius: 4px;
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 4 / 3;
        }
        .hero__image-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero__image-badge {
            position: absolute;
            bottom: 16px;
            right: 16px;
            background: rgba(26, 58, 42, 0.88);
            color: #fff;
            padding: 8px 14px;
            border-radius: 4px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.04em;
        }

        /* ===== Stats Cards ===== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card-gap-x);
        }
        .stat-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-data-card);
            padding: 20px 18px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover), transform var(--transition-hover);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }
        .stat-card__number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-card__label {
            font-size: 14px;
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ===== Brand Intro ===== */
        .brand-intro {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: var(--shadow-card);
        }
        .brand-intro__text {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text);
            max-width: 860px;
        }

        /* ===== News Cards ===== */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card-gap-x) 20px;
        }
        .news-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover), transform var(--transition-hover);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }
        .news-card__image {
            height: 180px;
            overflow: hidden;
            position: relative;
        }
        .news-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-hover);
        }
        .news-card:hover .news-card__image img {
            transform: scale(1.05);
        }
        .news-card__body {
            padding: 16px 18px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            flex: 1;
        }
        .news-card__tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            color: var(--color-accent);
            background: rgba(230, 119, 46, 0.08);
            padding: 3px 10px;
            border-radius: 4px;
            letter-spacing: 0.05em;
            width: fit-content;
        }
        .news-card__title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            letter-spacing: 0.01em;
        }
        .news-card__excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            flex: 1;
        }
        .news-card__date {
            font-size: 13px;
            color: #888;
            letter-spacing: 0.03em;
        }

        /* ===== Dashboard Table ===== */
        .dashboard-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 28px;
            box-shadow: var(--shadow-card);
            overflow-x: auto;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 560px;
        }
        .data-table thead th {
            background: var(--color-table-header);
            color: var(--color-text);
            font-weight: 600;
            padding: 12px 14px;
            text-align: left;
            border-bottom: 1px solid var(--color-border);
            white-space: nowrap;
            font-size: 13px;
            letter-spacing: 0.03em;
        }
        .data-table thead th:last-child,
        .data-table tbody td:last-child {
            text-align: right;
        }
        .data-table tbody td {
            padding: 12px 14px;
            border-bottom: 1px solid var(--color-border);
            color: var(--color-text);
            font-size: 14px;
            white-space: nowrap;
        }
        .data-table tbody td:last-child {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--color-primary);
        }
        .data-table tbody tr:hover {
            background: #FAFAF8;
        }
        .data-table tbody tr:last-child td {
            border-bottom: none;
        }
        .data-table .trend-up {
            color: var(--color-success);
            font-family: var(--font-mono);
        }
        .data-table .trend-down {
            color: var(--color-danger);
            font-family: var(--font-mono);
        }

        /* ===== Category Entries ===== */
        .category-entry-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-card-gap-x) 20px;
        }
        .category-entry {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 20px 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-hover);
            text-decoration: none;
        }
        .category-entry:hover {
            border-color: var(--color-primary);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
            text-decoration: none;
        }
        .category-entry__icon {
            width: 48px;
            height: 48px;
            border-radius: 6px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .category-entry__content {
            flex: 1;
        }
        .category-entry__title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .category-entry__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }
        .category-entry__arrow {
            font-size: 20px;
            color: var(--color-accent);
            font-weight: 500;
            flex-shrink: 0;
        }

        /* ===== Deep Read List ===== */
        .deep-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .deep-list__item {
            display: flex;
            gap: 18px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
            align-items: flex-start;
        }
        .deep-list__item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .deep-list__thumb {
            width: 100px;
            height: 72px;
            border-radius: 4px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .deep-list__thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .deep-list__content {
            flex: 1;
        }
        .deep-list__title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 4px;
            line-height: 1.45;
        }
        .deep-list__excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin-bottom: 6px;
        }
        .deep-list__meta {
            font-size: 13px;
            color: #888;
        }

        /* ===== Personnel Grid ===== */
        .personnel-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card-gap-x) 20px;
        }
        .personnel-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-hover);
            text-align: center;
            padding-bottom: 16px;
        }
        .personnel-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }
        .personnel-card__avatar {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .personnel-card__name {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-top: 12px;
        }
        .personnel-card__sport {
            font-size: 13px;
            color: var(--color-accent);
            font-weight: 500;
            margin-top: 2px;
        }
        .personnel-card__bio {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            padding: 8px 14px 0;
        }

        /* ===== Industry Analysis ===== */
        .industry-flex {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            align-items: center;
        }
        .industry-flex__image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card-hover);
            aspect-ratio: 4 / 3;
        }
        .industry-flex__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .industry-flex__text {
            font-size: 15px;
            line-height: 1.85;
            color: var(--color-text);
        }
        .industry-flex__text p {
            margin-bottom: 12px;
        }

        /* ===== Timeline / Calendar ===== */
        .calendar-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .calendar-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-data-card);
            padding: 14px 18px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
        }
        .calendar-item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .calendar-item__date {
            font-family: var(--font-mono);
            font-size: 15px;
            font-weight: 600;
            color: var(--color-primary);
            white-space: nowrap;
            min-width: 80px;
        }
        .calendar-item__event {
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            flex: 1;
        }
        .calendar-item__region {
            font-size: 13px;
            color: var(--color-text-secondary);
            background: #F0F0EA;
            padding: 4px 10px;
            border-radius: 4px;
            white-space: nowrap;
        }

        /* ===== Venue / Geography ===== */
        .venue-flex {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 28px;
            align-items: stretch;
        }
        .venue-map {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            position: relative;
            aspect-ratio: 4 / 3;
        }
        .venue-map img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .venue-map__overlay {
            position: absolute;
            inset: 0;
            background: rgba(26, 58, 42, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            font-weight: 500;
            letter-spacing: 0.06em;
        }
        .venue-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            justify-content: center;
        }
        .venue-list__item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--color-border);
        }
        .venue-list__item:last-child {
            border-bottom: none;
        }
        .venue-list__dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            margin-top: 7px;
            flex-shrink: 0;
        }
        .venue-list__text {
            font-size: 14px;
            color: var(--color-text);
            line-height: 1.7;
        }

        /* ===== Methodology Cards ===== */
        .method-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .method-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 24px 22px;
            box-shadow: var(--shadow-card);
            transition: all var(--transition-hover);
        }
        .method-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
            transform: translateY(-3px);
        }
        .method-card__icon {
            width: 40px;
            height: 40px;
            border-radius: 6px;
            background: rgba(230, 119, 46, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--color-accent);
            margin-bottom: 14px;
            font-weight: 700;
        }
        .method-card__title {
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            margin-bottom: 8px;
        }
        .method-card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.75;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 800px;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }
        .faq-item:hover {
            border-color: var(--color-primary);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 16px 20px;
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            letter-spacing: 0.01em;
        }
        .faq-item__question-text {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
        }
        .faq-item__q-icon {
            font-weight: 700;
            color: var(--color-accent);
            font-size: 16px;
        }
        .faq-item__toggle {
            font-size: 20px;
            color: var(--color-text-secondary);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }
        .faq-item--open .faq-item__toggle {
            transform: rotate(45deg);
        }
        .faq-item__answer {
            padding: 0 20px 16px 46px;
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            background: #FAFAF8;
            margin: 0 12px 12px;
            border-radius: 4px;
            display: none;
        }
        .faq-item--open .faq-item__answer {
            display: block;
        }

        /* ===== Subscribe / CTA ===== */
        .subscribe-panel {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 32px 36px;
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .subscribe-panel__text {
            flex: 1;
            min-width: 240px;
        }
        .subscribe-panel__title {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 6px;
        }
        .subscribe-panel__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }
        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            min-width: 280px;
            flex-shrink: 0;
        }
        .subscribe-form__input {
            flex: 1;
            min-width: 200px;
            padding: 10px 16px;
            border: 1.5px solid var(--color-primary);
            border-radius: 4px;
            font-size: 15px;
            color: var(--color-text);
            background: #fff;
            transition: border-color var(--transition-base);
        }
        .subscribe-form__input:focus {
            border-color: var(--color-accent);
            outline: none;
        }
        .subscribe-form__submit {
            padding: 10px 20px;
            background: var(--color-accent);
            color: #fff;
            border: none;
            border-radius: 4px;
            font-size: 15px;
            font-weight: 500;
            cursor: pointer;
            transition: background var(--transition-hover);
            white-space: nowrap;
        }
        .subscribe-form__submit:hover {
            background: var(--color-accent-dark);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: #E8E8E4;
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .site-footer a {
            color: #D4D4CF;
            transition: color var(--transition-base);
        }
        .site-footer a:hover {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1.5fr 1.5fr 2fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand__icon {
            display: inline-block;
            width: 28px;
            height: 28px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 4px;
            text-align: center;
            font-size: 15px;
            line-height: 28px;
            margin-right: 8px;
        }
        .footer-desc {
            font-size: 13px;
            color: #B0B0AA;
            line-height: 1.8;
            max-width: 260px;
        }
        .footer-col__title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }
        .footer-col__list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col__list a {
            font-size: 14px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: #B0B0AA;
        }
        .footer-bottom__links {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .footer-bottom a {
            color: #B0B0AA;
            font-size: 13px;
        }
        .footer-bottom a:hover {
            color: var(--color-accent);
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero__inner {
                grid-template-columns: 1fr;
                gap: 24px;
                min-height: auto;
            }
            .hero__image-wrapper {
                aspect-ratio: 16 / 9;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .personnel-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .industry-flex {
                grid-template-columns: 1fr;
            }
            .venue-flex {
                grid-template-columns: 1fr;
            }
            .category-entry-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 40px;
                --nav-height: 56px;
            }
            body {
                font-size: 15px;
            }
            .container {
                padding: 0 16px;
            }
            .section__title {
                font-size: 20px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--color-card);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px 20px;
                gap: 8px;
                transform: translateX(100%);
                transition: transform 0.3s ease;
                z-index: 999;
                box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
                overflow-y: auto;
            }
            .main-nav--open {
                transform: translateX(0);
            }
            .main-nav__item {
                width: 100%;
            }
            .main-nav__link {
                padding: 14px 4px;
                font-size: 17px;
                border-bottom: 1px solid var(--color-border);
                width: 100%;
            }
            .main-nav__link.active::after {
                display: none;
            }
            .main-nav__link.active {
                border-bottom: 2px solid var(--color-accent);
            }
            .hero {
                padding-top: calc(var(--nav-height) + 24px);
                padding-bottom: 32px;
            }
            .hero__title {
                font-size: 24px;
            }
            .hero__stats {
                gap: 16px;
            }
            .hero__stat-number {
                font-size: 22px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-entry-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .personnel-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .method-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .deep-list__item {
                flex-direction: column;
                gap: 12px;
            }
            .deep-list__thumb {
                width: 100%;
                height: 140px;
            }
            .calendar-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .calendar-item__date {
                min-width: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-panel {
                padding: 20px 18px;
                flex-direction: column;
                align-items: stretch;
            }
            .subscribe-form {
                flex-direction: column;
                min-width: auto;
            }
            .subscribe-form__input {
                min-width: auto;
            }
            .dashboard-card {
                padding: 16px;
            }
            .data-table {
                font-size: 12px;
                min-width: 480px;
            }
            .brand-intro {
                padding: 20px 18px;
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .personnel-grid {
                grid-template-columns: 1fr;
            }
            .hero__title {
                font-size: 22px;
            }
            .btn {
                padding: 9px 16px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .hero__cta {
                flex-direction: column;
                gap: 8px;
            }
            .section__title {
                font-size: 18px;
            }
            .data-table {
                font-size: 11px;
                min-width: 400px;
            }
        }

/* roulang page: category2 */
:root {
        --color-primary: #1A3A2A;
        --color-primary-dark: #10251B;
        --color-accent: #E6772E;
        --color-accent-dark: #C96221;
        --color-bg: #FAFAF7;
        --color-card: #FFFFFF;
        --color-text: #1C1C1E;
        --color-text-secondary: #5A5A5A;
        --color-border: #E8E8E4;
        --color-success: #2E5A41;
        --color-danger: #A33A2A;
        --color-table-header: #F5F5F2;
        --font-serif: 'Noto Serif SC', 'Source Han Serif', 'Songti SC', 'SimSun', serif;
        --font-sans: 'Noto Sans SC', 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        --font-mono: 'SF Mono', 'Consolas', 'Menlo', 'Courier New', monospace;
        --radius-card: 8px;
        --radius-data-card: 4px;
        --radius-btn: 6px;
        --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05);
        --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.09);
        --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
        --container-max: 1200px;
        --nav-height: 64px;
        --transition-base: 0.2s ease;
        --transition-hover: 0.3s ease;
        --spacing-section: 64px;
        --spacing-card-gap-x: 16px;
        --spacing-card-gap-y: 24px;
    }

    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(--color-text);
        background-color: var(--color-bg);
        min-height: 100vh;
        margin: 0;
        padding-top: var(--nav-height);
    }

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

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

    a:hover {
        color: var(--color-accent);
        text-decoration: underline;
        text-underline-offset: 4px;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
        outline: 2px solid var(--color-accent);
        outline-offset: 3px;
    }

    button {
        cursor: pointer;
        font-family: var(--font-sans);
        border: none;
        background: none;
    }

    input {
        font-family: var(--font-sans);
    }

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

    section,
    .section {
        padding: var(--spacing-section) 0;
    }

    .section--alt {
        background-color: #F4F4F0;
    }

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

    .section--tight {
        padding: 40px 0;
    }

    .section__header {
        margin-bottom: 32px;
    }

    .section__label {
        display: inline-block;
        font-size: 14px;
        font-weight: 500;
        color: var(--color-accent);
        letter-spacing: 0.08em;
        margin-bottom: 8px;
        text-transform: uppercase;
    }

    .section__title {
        font-family: var(--font-serif);
        font-size: 24px;
        font-weight: 700;
        color: var(--color-primary);
        line-height: 1.35;
        letter-spacing: 0.01em;
        margin: 0;
    }

    .section__desc {
        font-size: 15px;
        color: var(--color-text-secondary);
        margin-top: 10px;
        max-width: 720px;
        line-height: 1.8;
    }

    /* Header / Navigation */
    .site-header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        height: var(--nav-height);
        background: var(--color-card);
        border-bottom: 1px solid var(--color-border);
        z-index: 1000;
        box-shadow: var(--shadow-nav);
    }

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

    .logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-family: var(--font-serif);
        font-weight: 700;
        font-size: 20px;
        color: var(--color-primary);
        letter-spacing: 0.03em;
        white-space: nowrap;
    }

    .logo:hover {
        color: var(--color-primary);
        text-decoration: none;
    }

    .logo__icon {
        width: 36px;
        height: 36px;
        background: var(--color-primary);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 18px;
        font-weight: 700;
        border-radius: 4px;
        letter-spacing: 0;
    }

    .main-nav {
        display: flex;
        align-items: center;
        gap: 0;
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .main-nav__item {
        position: relative;
    }

    .main-nav__link {
        display: block;
        padding: 20px 16px;
        font-size: 15px;
        font-weight: 500;
        color: var(--color-text);
        letter-spacing: 0.02em;
        transition: color var(--transition-base);
        white-space: nowrap;
    }

    .main-nav__link:hover {
        color: var(--color-primary);
        text-decoration: none;
    }

    .main-nav__link.active {
        color: var(--color-primary);
        font-weight: 700;
    }

    .main-nav__link.active::after {
        content: '';
        position: absolute;
        bottom: -1px;
        left: 50%;
        transform: translateX(-50%);
        width: 40px;
        height: 3px;
        background: var(--color-accent);
        border-radius: 3px 3px 0 0;
    }

    .nav-toggle {
        display: none;
        flex-direction: column;
        justify-content: space-between;
        width: 30px;
        height: 24px;
        background: transparent;
        border: none;
        cursor: pointer;
        padding: 0;
        z-index: 1001;
    }

    .nav-toggle__bar {
        display: block;
        width: 100%;
        height: 3px;
        background: var(--color-primary);
        border-radius: 2px;
        transition: all 0.3s ease;
    }

    .nav-toggle__bar--top.active {
        transform: translateY(10px) rotate(45deg);
    }

    .nav-toggle__bar--middle.active {
        opacity: 0;
    }

    .nav-toggle__bar--bottom.active {
        transform: translateY(-10px) rotate(-45deg);
    }

    /* Hero-like category header */
    .category-header {
        background: #F4F4F0;
        padding: 40px 0 32px;
        border-bottom: 1px solid var(--color-border);
    }

    .breadcrumb {
        font-size: 14px;
        color: var(--color-text-secondary);
        margin-bottom: 12px;
        display: flex;
        gap: 6px;
        align-items: center;
    }

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

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

    .category-header h1 {
        font-family: var(--font-serif);
        font-size: 32px;
        font-weight: 700;
        color: var(--color-primary);
        margin: 0 0 8px;
        letter-spacing: 0.02em;
    }

    .category-header .lead {
        font-size: 16px;
        color: var(--color-text-secondary);
        max-width: 760px;
        line-height: 1.8;
    }

    /* Data snapshot */
    .snapshot-strip {
        background: var(--color-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 20px 24px;
        display: flex;
        flex-wrap: wrap;
        gap: 24px;
        justify-content: space-between;
        align-items: center;
        margin-top: -20px;
        position: relative;
        z-index: 2;
    }

    .snapshot-item {
        text-align: center;
        flex: 1 0 0;
        min-width: 120px;
    }

    .snapshot-item__number {
        font-family: var(--font-mono);
        font-size: 36px;
        font-weight: 700;
        color: var(--color-primary);
        line-height: 1.2;
    }

    .snapshot-item__label {
        font-size: 14px;
        color: var(--color-text-secondary);
        margin-top: 4px;
    }

    /* Main list */
    .tracker-list {
        display: flex;
        flex-direction: column;
        gap: 16px;
    }

    .tracker-item {
        background: var(--color-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        display: flex;
        overflow: hidden;
        transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
    }

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

    .tracker-item__thumb {
        width: 180px;
        flex-shrink: 0;
        overflow: hidden;
        border-radius: var(--radius-card) 0 0 var(--radius-card);
    }

    .tracker-item__thumb img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .tracker-item:hover .tracker-item__thumb img {
        transform: scale(1.05);
    }

    .tracker-item__body {
        padding: 16px 20px;
        flex: 1;
        display: flex;
        flex-direction: column;
    }

    .tracker-item__title {
        font-size: 18px;
        font-weight: 700;
        color: var(--color-primary);
        margin: 0 0 6px;
        line-height: 1.4;
    }

    .tracker-item__summary {
        font-size: 14px;
        color: var(--color-text-secondary);
        line-height: 1.6;
        margin: 0 0 12px;
        flex: 1;
    }

    .tracker-item__meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 8px 16px;
        font-size: 13px;
        color: var(--color-text-secondary);
    }

    .tracker-item__tag {
        background: #F4F4F0;
        color: var(--color-primary);
        padding: 2px 10px;
        border-radius: 12px;
        font-size: 12px;
    }

    /* Tag group */
    .tag-group {
        display: flex;
        flex-wrap: wrap;
        gap: 10px;
        align-items: center;
    }

    .tag-chip {
        display: inline-block;
        padding: 6px 16px;
        border: 1px solid var(--color-border);
        border-radius: 20px;
        background: var(--color-card);
        color: var(--color-text);
        font-size: 14px;
        font-weight: 500;
        transition: all var(--transition-base);
    }

    .tag-chip:hover {
        border-color: var(--color-accent);
        color: var(--color-accent);
        text-decoration: none;
    }

    .tag-chip--more {
        border-color: var(--color-primary);
        color: var(--color-primary);
        font-weight: 700;
    }

    .tag-chip--more:hover {
        background: var(--color-primary);
        color: #fff;
    }

    /* Feature block (image + text) */
    .feature-block {
        display: flex;
        align-items: center;
        gap: 32px;
        background: var(--color-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        padding: 24px;
    }

    .feature-block__text {
        flex: 1;
    }

    .feature-block__title {
        font-family: var(--font-serif);
        font-size: 22px;
        font-weight: 700;
        color: var(--color-primary);
        margin: 0 0 12px;
    }

    .feature-block__desc {
        font-size: 15px;
        color: var(--color-text-secondary);
        line-height: 1.8;
        margin: 0;
    }

    .feature-block__image {
        flex: 0 0 280px;
        border-radius: var(--radius-card);
        overflow: hidden;
    }

    .feature-block__image img {
        width: 100%;
        height: 180px;
        object-fit: cover;
    }

    /* Extend reading cards */
    .reading-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .reading-card {
        background: var(--color-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        box-shadow: var(--shadow-card);
        overflow: hidden;
        transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
    }

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

    .reading-card__image {
        height: 140px;
        overflow: hidden;
    }

    .reading-card__image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

    .reading-card:hover .reading-card__image img {
        transform: scale(1.05);
    }

    .reading-card__body {
        padding: 16px;
    }

    .reading-card__title {
        font-size: 16px;
        font-weight: 700;
        color: var(--color-primary);
        margin: 0 0 6px;
        line-height: 1.4;
    }

    .reading-card__desc {
        font-size: 13px;
        color: var(--color-text-secondary);
        line-height: 1.6;
        margin: 0;
    }

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

    .faq-item {
        background: var(--color-card);
        border: 1px solid var(--color-border);
        border-radius: var(--radius-card);
        margin-bottom: 12px;
        box-shadow: var(--shadow-card);
        overflow: hidden;
    }

    .faq-question {
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 16px 20px;
        font-size: 16px;
        font-weight: 700;
        color: var(--color-primary);
        background: none;
        border: none;
        text-align: left;
        cursor: pointer;
        transition: background var(--transition-base);
    }

    .faq-question:hover {
        background: #F4F4F0;
    }

    .faq-question .faq-icon {
        font-size: 22px;
        font-weight: 400;
        color: var(--color-accent);
        transition: transform 0.3s ease;
    }

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

    .faq-answer {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .faq-item.open .faq-answer {
        max-height: 200px;
    }

    .faq-answer__inner {
        padding: 0 20px 16px;
        font-size: 15px;
        color: var(--color-text-secondary);
        line-height: 1.8;
    }

    /* Footer */
    .site-footer {
        background: var(--color-primary-dark);
        color: #B0B0AA;
        padding: 40px 0 0;
    }

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

    .footer-brand {
        font-family: var(--font-serif);
        font-size: 20px;
        font-weight: 700;
        color: #fff;
        display: flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 12px;
    }

    .footer-brand__icon {
        width: 32px;
        height: 32px;
        background: var(--color-accent);
        color: #fff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 16px;
        border-radius: 4px;
    }

    .footer-desc {
        font-size: 14px;
        line-height: 1.8;
        color: #B0B0AA;
        margin: 0;
    }

    .footer-col__title {
        font-size: 16px;
        font-weight: 700;
        color: #fff;
        margin-bottom: 12px;
    }

    .footer-col__list {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .footer-col__list li {
        margin-bottom: 8px;
    }

    .footer-col__list a {
        color: #B0B0AA;
        font-size: 14px;
        transition: color var(--transition-base);
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255,255,255,0.1);
        padding: 16px 0;
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        gap: 12px;
        font-size: 13px;
    }

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

    .footer-bottom__links a {
        color: #B0B0AA;
    }

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

    /* Buttons generic */
    .btn-primary {
        background: var(--color-accent);
        color: #fff;
        border-radius: var(--radius-btn);
        padding: 10px 20px;
        font-size: 15px;
        font-weight: 600;
        transition: all var(--transition-base);
        display: inline-block;
    }

    .btn-primary:hover {
        background: var(--color-accent-dark);
        color: #fff;
        transform: translateY(-2px);
        text-decoration: none;
    }

    .btn-outline-primary {
        background: transparent;
        border: 1.5px solid var(--color-primary);
        color: var(--color-primary);
        border-radius: var(--radius-btn);
        padding: 10px 20px;
        font-size: 15px;
        font-weight: 600;
        transition: all var(--transition-base);
        display: inline-block;
    }

    .btn-outline-primary:hover {
        background: var(--color-primary);
        color: #fff;
        text-decoration: none;
    }

    /* Responsive */
    @media (max-width: 1199px) {
        :root {
            --spacing-section: 48px;
        }
        .footer-grid {
            grid-template-columns: 1fr 1fr;
        }
        .feature-block {
            flex-direction: column;
            align-items: flex-start;
        }
        .feature-block__image {
            width: 100%;
            flex-basis: auto;
        }
        .feature-block__image img {
            height: 200px;
        }
        .reading-grid {
            grid-template-columns: repeat(2, 1fr);
        }
    }

    @media (max-width: 767px) {
        :root {
            --spacing-section: 32px;
            --nav-height: 56px;
        }
        body {
            padding-top: var(--nav-height);
        }
        .main-nav {
            position: fixed;
            top: var(--nav-height);
            left: 0;
            right: 0;
            background: var(--color-card);
            flex-direction: column;
            align-items: stretch;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
        }
        .main-nav.open {
            max-height: calc(100vh - var(--nav-height));
        }
        .main-nav__link {
            padding: 16px 24px;
            text-align: center;
            font-size: 16px;
        }
        .main-nav__link.active::after {
            display: none;
        }
        .nav-toggle {
            display: flex;
        }
        .snapshot-strip {
            gap: 12px;
            padding: 16px;
        }
        .snapshot-item__number {
            font-size: 28px;
        }
        .tracker-item {
            flex-direction: column;
        }
        .tracker-item__thumb {
            width: 100%;
            height: 160px;
            border-radius: var(--radius-card) var(--radius-card) 0 0;
        }
        .tracker-item__body {
            padding: 12px 16px;
        }
        .footer-grid {
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .reading-grid {
            grid-template-columns: 1fr;
        }
        .feature-block__image img {
            height: 160px;
        }
        .category-header h1 {
            font-size: 26px;
        }
        .section__title {
            font-size: 20px;
        }
    }

    @media (max-width: 479px) {
        .container {
            padding: 0 16px;
        }
        .snapshot-item {
            min-width: calc(50% - 12px);
        }
    }

/* roulang page: category1 */
:root {
      --color-primary: #1A3A2A;
      --color-primary-dark: #10251B;
      --color-accent: #E6772E;
      --color-accent-dark: #C96221;
      --color-bg: #FAFAF7;
      --color-card: #FFFFFF;
      --color-text: #1C1C1E;
      --color-text-secondary: #5A5A5A;
      --color-border: #E8E8E4;
      --color-success: #2E5A41;
      --color-danger: #A33A2A;
      --color-table-header: #F5F5F2;
      --font-serif: 'Noto Serif SC', 'Source Han Serif', 'Songti SC', 'SimSun', serif;
      --font-sans: 'Noto Sans SC', 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-mono: 'SF Mono', 'Consolas', 'Menlo', 'Courier New', monospace;
      --radius-card: 8px;
      --radius-data-card: 4px;
      --radius-btn: 6px;
      --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05);
      --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.09);
      --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
      --container-max: 1200px;
      --nav-height: 64px;
      --transition-base: 0.2s ease;
      --transition-hover: 0.3s ease;
      --spacing-section: 64px;
      --spacing-card-gap-x: 16px;
      --spacing-card-gap-y: 24px;
    }
    *, *::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(--color-text);
      background-color: var(--color-bg);
      min-height: 100vh;
      padding-top: var(--nav-height);
    }
    img {
      max-width: 100%;
      height: auto;
      display: block;
    }
    a {
      color: var(--color-primary);
      text-decoration: none;
      transition: color var(--transition-base), text-decoration-color var(--transition-base);
    }
    a:hover {
      color: var(--color-accent);
      text-decoration: underline;
      text-underline-offset: 4px;
    }
    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 3px;
    }
    button {
      cursor: pointer;
      font-family: var(--font-sans);
      border: none;
      background: none;
    }
    input {
      font-family: var(--font-sans);
    }
    .container {
      max-width: var(--container-max);
      margin: 0 auto;
      padding: 0 24px;
    }
    section,
    .section {
      padding: var(--spacing-section) 0;
    }
    .section--alt {
      background-color: #F4F4F0;
    }
    .section--white {
      background-color: var(--color-card);
    }
    .section--tight {
      padding: 40px 0;
    }
    .section__header {
      margin-bottom: 32px;
    }
    .section__label {
      display: inline-block;
      font-size: 14px;
      font-weight: 500;
      color: var(--color-accent);
      letter-spacing: 0.08em;
      margin-bottom: 8px;
      text-transform: uppercase;
    }
    .section__title {
      font-family: var(--font-serif);
      font-size: 24px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.35;
      letter-spacing: 0.01em;
    }
    .section__desc {
      font-size: 15px;
      color: var(--color-text-secondary);
      margin-top: 10px;
      max-width: 720px;
      line-height: 1.8;
    }

    /* ===== Header / Navigation ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: var(--nav-height);
      background: var(--color-card);
      border-bottom: 1px solid var(--color-border);
      z-index: 1000;
      box-shadow: var(--shadow-nav);
    }
    .site-header .container {
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 20px;
      color: var(--color-primary);
      letter-spacing: 0.03em;
      white-space: nowrap;
    }
    .logo:hover {
      color: var(--color-primary);
      text-decoration: none;
    }
    .logo__icon {
      width: 36px;
      height: 36px;
      background: var(--color-primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      border-radius: 4px;
      letter-spacing: 0;
    }
    .main-nav {
      display: flex;
      align-items: center;
      gap: 0;
      list-style: none;
    }
    .main-nav__item {
      position: relative;
    }
    .main-nav__link {
      display: block;
      padding: 20px 16px;
      font-size: 15px;
      font-weight: 500;
      color: var(--color-text);
      letter-spacing: 0.02em;
      transition: color var(--transition-base);
      white-space: nowrap;
    }
    .main-nav__link:hover {
      color: var(--color-primary);
      text-decoration: none;
    }
    .main-nav__link.active {
      color: var(--color-primary);
      font-weight: 700;
    }
    .main-nav__link.active::after {
      content: '';
      position: absolute;
      left: 16px;
      right: 16px;
      bottom: 0;
      height: 3px;
      background: var(--color-accent);
      border-radius: 2px 2px 0 0;
    }
    .nav-toggle {
      display: none;
      flex-direction: column;
      gap: 5px;
      padding: 8px;
      margin-left: auto;
      z-index: 1100;
    }
    .nav-toggle__bar {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-primary);
      transition: transform var(--transition-base), opacity var(--transition-base);
    }
    .nav-toggle__bar--top {
      transform-origin: top left;
    }
    .nav-toggle__bar--middle {
      transition: opacity var(--transition-base);
    }
    .nav-toggle__bar--bottom {
      transform-origin: bottom left;
    }
    .nav-toggle[aria-expanded="true"] .nav-toggle__bar--top {
      transform: translateY(2px) rotate(45deg);
    }
    .nav-toggle[aria-expanded="true"] .nav-toggle__bar--middle {
      opacity: 0;
    }
    .nav-toggle[aria-expanded="true"] .nav-toggle__bar--bottom {
      transform: translateY(-2px) rotate(-45deg);
    }

    /* ===== Breadcrumb & Page Hero ===== */
    .page-hero {
      background: var(--color-card);
      border-bottom: 1px solid var(--color-border);
      padding: 32px 0 28px;
    }
    .breadcrumb {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-bottom: 16px;
    }
    .breadcrumb a {
      color: var(--color-primary);
    }
    .breadcrumb a:hover {
      color: var(--color-accent);
      text-decoration: underline;
    }
    .page-hero h1 {
      font-family: var(--font-serif);
      font-size: 28px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.4;
      margin-bottom: 12px;
    }
    .page-hero__desc {
      font-size: 16px;
      color: var(--color-text-secondary);
      max-width: 820px;
      line-height: 1.8;
    }

    /* ===== Stats Row ===== */
    .stats-row {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .stats-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-data-card);
      padding: 20px 16px;
      text-align: center;
      box-shadow: none;
      transition: box-shadow var(--transition-hover);
    }
    .stats-card:hover {
      box-shadow: var(--shadow-card-hover);
    }
    .stats-card__number {
      font-family: var(--font-mono);
      font-size: 36px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.2;
      letter-spacing: 0.02em;
    }
    .stats-card__label {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-top: 4px;
    }

    /* ===== Data List ===== */
    .data-list {
      display: flex;
      flex-direction: column;
      gap: 16px;
    }
    .data-list__item {
      display: flex;
      gap: 16px;
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 16px;
      transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
    }
    .data-list__item:hover {
      box-shadow: var(--shadow-card-hover);
      border-color: var(--color-primary);
    }
    .data-list__item img {
      width: 160px;
      height: 110px;
      object-fit: cover;
      border-radius: 4px;
      flex-shrink: 0;
      transition: transform var(--transition-hover);
    }
    .data-list__item:hover img {
      transform: scale(1.03);
    }
    .data-list__content {
      flex: 1;
      display: flex;
      flex-direction: column;
    }
    .data-list__content h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--color-text);
      margin-bottom: 4px;
      line-height: 1.5;
    }
    .data-list__content h3 a {
      color: inherit;
      text-decoration: none;
    }
    .data-list__content h3 a:hover {
      color: var(--color-accent);
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .data-list__content p {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.6;
      margin-bottom: 8px;
      flex: 1;
    }
    .data-list__meta {
      font-size: 13px;
      color: var(--color-text-secondary);
      border-top: 1px dashed var(--color-border);
      padding-top: 8px;
      display: inline-block;
    }

    /* ===== Tag Cloud ===== */
    .tag-cloud {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      align-items: center;
    }
    .tag {
      display: inline-block;
      padding: 6px 16px;
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: 20px;
      font-size: 14px;
      color: var(--color-primary);
      transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
    }
    .tag:hover {
      border-color: var(--color-accent);
      color: var(--color-accent);
      background: #FFF;
      text-decoration: none;
    }
    .tag--link {
      background: var(--color-primary);
      color: #fff;
      border-color: var(--color-primary);
    }
    .tag--link:hover {
      background: var(--color-primary-dark);
      border-color: var(--color-primary-dark);
      color: #fff;
    }

    /* ===== Featured Report ===== */
    .featured-report {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 32px;
      align-items: center;
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      padding: 24px;
      box-shadow: none;
      transition: box-shadow var(--transition-hover);
    }
    .featured-report:hover {
      box-shadow: var(--shadow-card-hover);
    }
    .featured-report__text h2 {
      font-family: var(--font-serif);
      font-size: 22px;
      font-weight: 700;
      color: var(--color-primary);
      margin: 8px 0 14px;
      line-height: 1.4;
    }
    .featured-report__text p {
      font-size: 15px;
      color: var(--color-text-secondary);
      line-height: 1.8;
    }
    .featured-report__image img {
      width: 100%;
      height: 240px;
      object-fit: cover;
      border-radius: 4px;
    }

    /* ===== Related List ===== */
    .related-list {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .related-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      overflow: hidden;
      transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
    }
    .related-card:hover {
      box-shadow: var(--shadow-card-hover);
      border-color: var(--color-primary);
    }
    .related-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
      transition: transform var(--transition-hover);
    }
    .related-card:hover img {
      transform: scale(1.05);
    }
    .related-card h3 {
      font-size: 18px;
      font-weight: 600;
      color: var(--color-text);
      margin: 16px 16px 8px;
      line-height: 1.4;
    }
    .related-card p {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin: 0 16px 16px;
      line-height: 1.6;
    }
    .related-card__link {
      display: inline-block;
      font-size: 14px;
      color: var(--color-accent);
      margin: 0 16px 16px;
      font-weight: 500;
      text-decoration: none;
    }
    .related-card__link:hover {
      text-decoration: underline;
      text-underline-offset: 3px;
      color: var(--color-accent-dark);
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 860px;
    }
    .faq-item {
      border-bottom: 1px solid var(--color-border);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 4px;
      font-size: 16px;
      font-weight: 600;
      color: var(--color-text);
      text-align: left;
      transition: color var(--transition-base);
    }
    .faq-question:hover {
      color: var(--color-primary);
    }
    .faq-icon {
      font-size: 22px;
      color: var(--color-accent);
      font-weight: 400;
      transition: transform var(--transition-base);
    }
    .faq-item[data-open="true"] .faq-icon {
      transform: rotate(45deg);
    }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height var(--transition-hover), padding var(--transition-hover);
      background: var(--color-card);
    }
    .faq-item[data-open="true"] .faq-answer {
      max-height: 300px;
      padding: 0 4px 16px;
    }
    .faq-answer p {
      font-size: 15px;
      color: var(--color-text-secondary);
      line-height: 1.8;
      margin-bottom: 0;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--color-primary-dark);
      color: #D0D0CA;
      padding: 56px 0 0;
      margin-top: 0;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.5fr;
      gap: 32px;
      margin-bottom: 32px;
    }
    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 20px;
      color: #fff;
      margin-bottom: 12px;
    }
    .footer-brand__icon {
      width: 32px;
      height: 32px;
      background: var(--color-accent);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      border-radius: 4px;
    }
    .footer-desc {
      font-size: 14px;
      line-height: 1.8;
      color: #B0B0AA;
      margin-bottom: 0;
    }
    .footer-col__title {
      font-size: 16px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 16px;
    }
    .footer-col__list {
      list-style: none;
      padding: 0;
    }
    .footer-col__list li {
      margin-bottom: 8px;
    }
    .footer-col__list a {
      color: #B0B0AA;
      font-size: 14px;
      transition: color var(--transition-base);
    }
    .footer-col__list a:hover {
      color: #fff;
      text-decoration: underline;
      text-underline-offset: 3px;
    }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding: 20px 0;
      display: flex;
      align-items: center;
      justify-content: space-between;
      flex-wrap: wrap;
      gap: 12px;
    }
    .footer-bottom span {
      font-size: 13px;
      color: #B0B0AA;
    }
    .footer-bottom__links a {
      font-size: 13px;
      color: #B0B0AA;
      margin-left: 20px;
      text-decoration: none;
    }
    .footer-bottom__links a:hover {
      color: #fff;
      text-decoration: underline;
    }

    /* ===== Responsive ===== */
    @media (max-width: 991.98px) {
      .main-nav {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: var(--color-card);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        gap: 0;
        padding-top: 24px;
        transform: translateX(100%);
        transition: transform 0.35s ease;
        z-index: 999;
        overflow-y: auto;
      }
      .main-nav.open {
        transform: translateX(0);
      }
      .main-nav__item {
        width: 100%;
        text-align: center;
      }
      .main-nav__link {
        padding: 16px 20px;
        font-size: 18px;
        width: 100%;
      }
      .main-nav__link.active::after {
        left: 50%;
        transform: translateX(-50%);
        right: auto;
        width: 60px;
      }
      .nav-toggle {
        display: flex;
      }
      .featured-report {
        grid-template-columns: 1fr;
      }
      .related-list {
        grid-template-columns: 1fr 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 767.98px) {
      :root {
        --spacing-section: 48px;
      }
      .stats-row {
        grid-template-columns: 1fr;
        gap: 12px;
      }
      .data-list__item {
        flex-direction: column;
      }
      .data-list__item img {
        width: 100%;
        height: 180px;
      }
      .related-list {
        grid-template-columns: 1fr;
      }
      .footer-grid {
        grid-template-columns: 1fr;
        gap: 24px;
      }
      .footer-bottom {
        flex-direction: column;
        text-align: center;
      }
      .footer-bottom__links a {
        margin: 0 10px;
      }
      .page-hero h1 {
        font-size: 24px;
      }
      .section__title {
        font-size: 20px;
      }
    }
    @media (max-width: 575.98px) {
      .container {
        padding: 0 16px;
      }
      .main-nav__link {
        padding: 14px 12px;
        font-size: 16px;
      }
      .data-list__content h3 {
        font-size: 16px;
      }
    }

/* roulang page: category3 */
:root {
            --color-primary: #1A3A2A;
            --color-primary-dark: #10251B;
            --color-accent: #E6772E;
            --color-accent-dark: #C96221;
            --color-bg: #FAFAF7;
            --color-card: #FFFFFF;
            --color-text: #1C1C1E;
            --color-text-secondary: #5A5A5A;
            --color-border: #E8E8E4;
            --color-success: #2E5A41;
            --color-danger: #A33A2A;
            --color-table-header: #F5F5F2;
            --font-serif: 'Noto Serif SC', 'Source Han Serif', 'Songti SC', 'SimSun', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Menlo', 'Courier New', monospace;
            --radius-card: 8px;
            --radius-data-card: 4px;
            --radius-btn: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.09);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
            --container-max: 1200px;
            --nav-height: 64px;
            --transition-base: 0.2s ease;
            --transition-hover: 0.3s ease;
            --spacing-section: 64px;
            --spacing-card-gap-x: 16px;
            --spacing-card-gap-y: 24px;
        }

        @media (max-width: 767px) {
            :root {
                --spacing-section: 40px;
                --nav-height: 56px;
            }
        }

        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(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            padding-top: var(--nav-height);
        }

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

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

        a:hover {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 4px;
        }

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }

        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
        }

        input {
            font-family: var(--font-sans);
        }

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

        section,
        .section {
            padding: var(--spacing-section) 0;
        }

        .section--alt {
            background-color: #F4F4F0;
        }

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

        .section--tight {
            padding: 40px 0;
        }

        .section__header {
            margin-bottom: 32px;
        }

        .section__label {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
            letter-spacing: 0.08em;
            margin-bottom: 8px;
            text-transform: uppercase;
        }

        .section__title {
            font-family: var(--font-serif);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            letter-spacing: 0.01em;
        }

        .section__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-top: 10px;
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }

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

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }

        .logo__icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            border-radius: 4px;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav__item {
            position: relative;
        }

        .main-nav__link {
            display: block;
            padding: 20px 16px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            letter-spacing: 0.02em;
            transition: color var(--transition-base);
            white-space: nowrap;
        }

        .main-nav__link:hover {
            color: var(--color-accent);
            text-decoration: none;
        }

        .main-nav__link.active {
            color: var(--color-primary);
            font-weight: 700;
        }

        .main-nav__link.active::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--color-accent);
        }

        .nav-toggle {
            display: none;
            width: 40px;
            height: 40px;
            position: relative;
            z-index: 1001;
            border-radius: 4px;
            border: 1px solid var(--color-border);
            background: var(--color-card);
        }

        .nav-toggle__bar {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-primary);
            margin: 4px auto;
            transition: transform 0.3s ease, opacity 0.3s ease;
        }

        @media (max-width: 991px) {
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-card);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 8px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--shadow-card);
                transform: translateY(-120%);
                transition: transform 0.35s ease;
                z-index: 999;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }

            .main-nav.mobile-open {
                transform: translateY(0);
            }

            .main-nav__item {
                width: 100%;
            }

            .main-nav__link {
                padding: 12px 0;
                font-size: 17px;
            }

            .main-nav__link.active::after {
                left: 0;
                right: 0;
                bottom: 0;
            }

            .nav-toggle {
                display: block;
            }
        }

        @media (min-width: 992px) {
            .main-nav {
                display: flex !important;
                transform: none !important;
                position: static;
                background: transparent;
                padding: 0;
                border: none;
                box-shadow: none;
                max-height: none;
                overflow: visible;
            }
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 24px 0 0;
            font-size: 14px;
            color: var(--color-text-secondary);
        }

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

        .breadcrumb-wrap a:hover {
            color: var(--color-accent);
            text-decoration: underline;
        }

        .breadcrumb-sep {
            margin: 0 8px;
            color: #B0B0AA;
        }

        /* ===== Page H1 zone ===== */
        .page-h1 {
            padding: 32px 0 0;
        }

        .page-h1 h1 {
            font-family: var(--font-serif);
            font-size: 30px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.3;
            letter-spacing: 0.02em;
            margin-bottom: 16px;
        }

        .page-h1__desc {
            font-size: 16px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 760px;
        }

        /* ===== Stat mini strip ===== */
        .stat-mini-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .stat-mini-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-data-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
        }

        .stat-mini-card__num {
            font-family: var(--font-mono);
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
        }

        .stat-mini-card__label {
            font-size: 14px;
            color: var(--color-text-secondary);
            margin-top: 6px;
            letter-spacing: 0.02em;
        }

        @media (max-width: 767px) {
            .stat-mini-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .stat-mini-card {
                padding: 16px 20px;
            }
        }

        /* ===== Card list main zone ===== */
        .archive-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px 16px;
        }

        .archive-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

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

        .archive-card__img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .archive-card:hover .archive-card__img {
            transform: scale(1.05);
        }

        .archive-card__body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .archive-card__title {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 10px;
        }

        .archive-card__desc {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            flex: 1;
        }

        .archive-card__meta {
            font-size: 13px;
            color: #8A8A85;
            margin-top: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .archive-card__tag {
            display: inline-block;
            background: var(--color-table-header);
            color: var(--color-primary);
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 12px;
            font-weight: 500;
        }

        @media (max-width: 767px) {
            .archive-list {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .archive-card__img {
                height: 160px;
            }
        }

        /* ===== Tags zone ===== */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
        }

        .tag-cloud__item {
            display: inline-block;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            color: var(--color-primary);
            font-size: 14px;
            padding: 6px 16px;
            border-radius: 20px;
            transition: background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
            cursor: default;
        }

        .tag-cloud__item:hover {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .tag-cloud__more {
            font-size: 14px;
            color: var(--color-accent);
            font-weight: 500;
        }

        .tag-cloud__more:hover {
            color: var(--color-accent-dark);
        }

        /* ===== Split text & image zone ===== */
        .split-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .split-panel__text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.85;
        }

        .split-panel__text strong {
            color: var(--color-primary);
            font-weight: 600;
        }

        .split-panel__img {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .split-panel__img img {
            width: 100%;
            height: 260px;
            object-fit: cover;
        }

        @media (max-width: 767px) {
            .split-panel {
                grid-template-columns: 1fr;
                gap: 20px;
            }

            .split-panel__img img {
                height: 200px;
            }
        }

        /* ===== Extended cards ===== */
        .extended-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
        }

        .extended-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
        }

        .extended-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-accent);
        }

        .extended-card__img {
            width: 100%;
            height: 140px;
            object-fit: cover;
        }

        .extended-card__body {
            padding: 16px 18px;
        }

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

        .extended-card__desc {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        @media (max-width: 991px) {
            .extended-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 767px) {
            .extended-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
        }

        /* ===== FAQ accordion ===== */
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }

        .faq-item__question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 20px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-primary);
            transition: background var(--transition-base);
        }

        .faq-item__question:hover {
            background: #F9F9F5;
        }

        .faq-item__q-mark {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-accent);
            flex-shrink: 0;
        }

        .faq-item__text {
            flex: 1;
        }

        .faq-item__icon {
            font-size: 20px;
            color: var(--color-accent);
            transition: transform 0.3s ease;
            flex-shrink: 0;
        }

        .faq-item__answer {
            padding: 0 20px 18px 20px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            border-top: 1px dashed var(--color-border);
            padding-top: 14px;
            margin: 0 20px 0 20px;
        }

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

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary-dark);
            color: #D0D0CA;
            padding: 56px 0 24px 0;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand__icon {
            width: 36px;
            height: 36px;
            background: var(--color-accent);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            border-radius: 4px;
            flex-shrink: 0;
        }

        .footer-desc {
            font-size: 14px;
            color: #B0B0AA;
            line-height: 1.8;
        }

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

        .footer-col__list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col__list a {
            color: #B0B0AA;
            font-size: 14px;
            transition: color var(--transition-base);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            font-size: 13px;
            color: #8A8A85;
        }

        .footer-bottom__links {
            display: flex;
            gap: 20px;
        }

        .footer-bottom__links a {
            color: #B0B0AA;
            font-size: 13px;
        }

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

        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

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

        /* ===== Small utilities ===== */
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0, 0, 0, 0);
            border: 0;
        }

/* roulang page: category4 */
:root {
      --color-primary: #1A3A2A;
      --color-primary-dark: #10251B;
      --color-accent: #E6772E;
      --color-accent-dark: #C96221;
      --color-bg: #FAFAF7;
      --color-card: #FFFFFF;
      --color-text: #1C1C1E;
      --color-text-secondary: #5A5A5A;
      --color-border: #E8E8E4;
      --color-success: #2E5A41;
      --color-danger: #A33A2A;
      --color-table-header: #F5F5F2;
      --font-serif: 'Noto Serif SC', 'Source Han Serif', 'Songti SC', 'SimSun', serif;
      --font-sans: 'Noto Sans SC', 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
      --font-mono: 'SF Mono', 'Consolas', 'Menlo', 'Courier New', monospace;
      --radius-card: 8px;
      --radius-data-card: 4px;
      --radius-btn: 6px;
      --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05);
      --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.09);
      --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
      --container-max: 1200px;
      --nav-height: 64px;
      --transition-base: 0.2s ease;
      --transition-hover: 0.3s ease;
      --spacing-section: 64px;
      --spacing-card-gap-x: 16px;
      --spacing-card-gap-y: 24px;
    }

    * {
      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(--color-text);
      background-color: var(--color-bg);
      min-height: 100vh;
    }

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

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

    a:hover {
      color: var(--color-accent);
      text-decoration: underline;
      text-underline-offset: 4px;
    }

    a:focus-visible,
    button:focus-visible,
    input:focus-visible {
      outline: 2px solid var(--color-accent);
      outline-offset: 3px;
    }

    button {
      cursor: pointer;
      font-family: var(--font-sans);
      border: none;
      background: none;
    }

    input {
      font-family: var(--font-sans);
    }

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

    .page-main {
      padding-top: var(--nav-height);
    }

    section,
    .section {
      padding: var(--spacing-section) 0;
    }

    .section--alt {
      background-color: #F4F4F0;
    }

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

    .section--tight {
      padding: 40px 0;
    }

    .section__header {
      margin-bottom: 32px;
    }

    .section__label {
      display: inline-block;
      font-size: 14px;
      font-weight: 600;
      color: var(--color-accent);
      letter-spacing: 0.08em;
      margin-bottom: 8px;
      text-transform: uppercase;
    }

    .section__title {
      font-family: var(--font-serif);
      font-size: 24px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.35;
      letter-spacing: 0.01em;
    }

    .section__desc {
      font-size: 15px;
      color: var(--color-text-secondary);
      margin-top: 10px;
      max-width: 720px;
      line-height: 1.8;
    }

    .btn {
      display: inline-block;
      border-radius: var(--radius-btn);
      padding: 10px 20px;
      font-size: 15px;
      font-weight: 600;
      letter-spacing: 0.01em;
      border: 1.5px solid transparent;
      transition: transform var(--transition-base), background-color var(--transition-base), color var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
      text-align: center;
      vertical-align: middle;
      user-select: none;
    }

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

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

    .btn--primary:hover {
      background: var(--color-accent-dark);
      border-color: var(--color-accent-dark);
      color: #fff;
      transform: translateY(-2px);
    }

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

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

    /* ===== Header ===== */
    .site-header {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      height: var(--nav-height);
      background: var(--color-card);
      border-bottom: 1px solid var(--color-border);
      z-index: 1030;
      box-shadow: var(--shadow-nav);
    }

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

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-serif);
      font-weight: 700;
      font-size: 20px;
      color: var(--color-primary);
      letter-spacing: 0.03em;
      white-space: nowrap;
      z-index: 1040;
    }

    .logo:hover {
      color: var(--color-primary);
      text-decoration: none;
    }

    .logo__icon {
      width: 36px;
      height: 36px;
      background: var(--color-primary);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      border-radius: 4px;
      letter-spacing: 0;
    }

    .main-nav {
      display: flex;
      align-items: stretch;
      gap: 0;
      list-style: none;
      margin: 0;
      padding: 0;
    }

    .main-nav__link {
      display: block;
      padding: 20px 14px;
      font-size: 15px;
      font-weight: 500;
      color: var(--color-text);
      letter-spacing: 0.02em;
      transition: color var(--transition-base), background-color var(--transition-base);
      white-space: nowrap;
      position: relative;
    }

    .main-nav__link:hover {
      color: var(--color-primary);
      text-decoration: none;
      background: #F7F7F3;
    }

    .main-nav__link.active {
      color: var(--color-primary);
      font-weight: 700;
      border-bottom: 3px solid var(--color-accent);
      padding-bottom: 17px;
    }

    .nav-toggle {
      display: none;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      width: 44px;
      height: 44px;
      z-index: 1040;
      background: transparent;
      border: 0;
      padding: 0;
      margin-left: auto;
    }

    .nav-toggle__bar {
      display: block;
      width: 22px;
      height: 2px;
      background: var(--color-primary);
      margin: 3px 0;
      transition: transform var(--transition-base), opacity var(--transition-base);
      transform-origin: center;
    }

    .nav-open .nav-toggle .nav-toggle__bar--top {
      transform: translateY(8px) rotate(45deg);
    }

    .nav-open .nav-toggle .nav-toggle__bar--middle {
      opacity: 0;
    }

    .nav-open .nav-toggle .nav-toggle__bar--bottom {
      transform: translateY(-8px) rotate(-45deg);
    }

    /* ===== Category Hero ===== */
    .category-hero {
      background: var(--color-primary);
      color: #fff;
      padding: 48px 0 40px;
    }

    .breadcrumb-category {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: rgba(255, 255, 255, 0.75);
      margin-bottom: 20px;
      list-style: none;
      padding: 0;
    }

    .breadcrumb-category a {
      color: rgba(255, 255, 255, 0.85);
      text-decoration: none;
    }

    .breadcrumb-category a:hover {
      color: #fff;
      text-decoration: underline;
    }

    .breadcrumb-category .separator {
      color: rgba(255, 255, 255, 0.5);
    }

    .category-hero h1 {
      font-family: var(--font-serif);
      font-size: 32px;
      font-weight: 700;
      color: #fff;
      line-height: 1.3;
      letter-spacing: 0.02em;
      margin-bottom: 12px;
    }

    .category-hero .hero-desc {
      font-size: 17px;
      color: rgba(255, 255, 255, 0.85);
      max-width: 760px;
      line-height: 1.85;
    }

    /* ===== Stats ===== */
    .category-stats {
      padding: 20px 0 0;
    }

    .category-stats .container {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-card-gap-x);
    }

    .stat-card {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-data-card);
      padding: 22px 20px;
      box-shadow: var(--shadow-card);
    }

    .stat-card .stat-value {
      font-family: var(--font-mono);
      font-size: 36px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.2;
    }

    .stat-card .stat-label {
      font-size: 14px;
      color: var(--color-text-secondary);
      margin-top: 6px;
    }

    /* ===== Personnel List ===== */
    .personnel-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-card-gap-y) var(--spacing-card-gap-x);
    }

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

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

    .personnel-card__img {
      width: 100%;
      height: 180px;
      object-fit: cover;
      transition: transform var(--transition-hover);
    }

    .personnel-card:hover .personnel-card__img {
      transform: scale(1.05);
    }

    .personnel-card__body {
      padding: 16px 20px 20px;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .personnel-card__title {
      font-size: 18px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.45;
      margin-bottom: 8px;
    }

    .personnel-card__desc {
      font-size: 14px;
      color: var(--color-text-secondary);
      line-height: 1.65;
      margin-bottom: 14px;
    }

    .personnel-card__meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 8px;
      font-size: 13px;
      color: #777;
      margin-top: auto;
    }

    .tag-chip {
      display: inline-block;
      background: #F4F4F0;
      color: var(--color-primary);
      font-size: 12px;
      padding: 3px 10px;
      border-radius: 20px;
      letter-spacing: 0.02em;
      font-weight: 600;
    }

    .personnel-date {
      color: #9a9a9a;
    }

    /* ===== Topic Tags ===== */
    .topic-tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 8px;
    }

    .topic-tag {
      display: inline-block;
      background: var(--color-card);
      border: 1px solid var(--color-border);
      color: var(--color-text);
      padding: 8px 18px;
      border-radius: 30px;
      font-size: 15px;
      font-weight: 500;
      transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base);
    }

    .topic-tag:hover {
      background: var(--color-primary);
      border-color: var(--color-primary);
      color: #fff;
      text-decoration: none;
    }

    .topic-tag--link {
      background: transparent;
      border-color: var(--color-primary);
      color: var(--color-primary);
      font-weight: 700;
    }

    .topic-tag--link:hover {
      background: var(--color-primary);
      color: #fff;
    }

    /* ===== Support A ===== */
    .support-grid {
      display: grid;
      grid-template-columns: 1.1fr 0.9fr;
      gap: 32px;
      align-items: center;
    }

    .support-grid__text h2 {
      font-family: var(--font-serif);
      font-size: 22px;
      font-weight: 700;
      color: var(--color-primary);
      line-height: 1.4;
      margin-bottom: 12px;
    }

    .support-grid__text p {
      font-size: 15px;
      color: var(--color-text-secondary);
      line-height: 1.85;
    }

    .support-grid__img {
      width: 100%;
      height: 260px;
      object-fit: cover;
      border-radius: var(--radius-card);
      border: 1px solid var(--color-border);
    }

    /* ===== Support B ===== */
    .insight-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: var(--spacing-card-gap-y) var(--spacing-card-gap-x);
    }

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

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

    .insight-card__img {
      width: 100%;
      height: 150px;
      object-fit: cover;
    }

    .insight-card__body {
      padding: 16px 18px;
    }

    .insight-card__title {
      font-size: 17px;
      font-weight: 700;
      color: var(--color-primary);
      margin-bottom: 6px;
    }

    .insight-card__desc {
      font-size: 13px;
      color: var(--color-text-secondary);
      line-height: 1.6;
    }

    /* ===== FAQ ===== */
    .faq-list {
      max-width: 780px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--color-card);
      border: 1px solid var(--color-border);
      border-radius: var(--radius-card);
      margin-bottom: 12px;
      box-shadow: var(--shadow-card);
      overflow: hidden;
    }

    .faq-item summary {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 18px 20px;
      font-size: 16px;
      font-weight: 700;
      color: var(--color-primary);
      cursor: pointer;
      list-style: none;
      transition: background-color var(--transition-base);
    }

    .faq-item summary:hover {
      background-color: #F4F4F0;
    }

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

    .faq-item summary::after {
      content: "+";
      font-size: 24px;
      color: var(--color-accent);
      font-weight: 500;
      transition: transform var(--transition-base);
    }

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

    .faq-item .faq-answer {
      padding: 0 20px 18px;
      color: var(--color-text-secondary);
      font-size: 15px;
      line-height: 1.8;
    }

    /* ===== Footer ===== */
    .site-footer {
      background: var(--color-primary-dark);
      color: rgba(255, 255, 255, 0.75);
      padding: 48px 0 0;
      margin-top: 0;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.3fr 1fr 1fr 1.2fr;
      gap: 28px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-serif);
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .footer-brand__icon {
      width: 32px;
      height: 32px;
      background: var(--color-accent);
      color: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      border-radius: 4px;
      font-weight: 700;
    }

    .footer-desc {
      font-size: 14px;
      color: rgba(255, 255, 255, 0.65);
      line-height: 1.8;
      max-width: 280px;
    }

    .footer-col__title {
      font-size: 16px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 14px;
    }

    .footer-col__list {
      list-style: none;
      padding: 0;
      margin: 0;
    }

    .footer-col__list li {
      margin-bottom: 8px;
    }

    .footer-col__list a {
      color: rgba(255, 255, 255, 0.7);
      font-size: 14px;
      text-decoration: none;
      transition: color var(--transition-base);
    }

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

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      padding: 20px 0;
      font-size: 13px;
      color: rgba(255, 255, 255, 0.55);
    }

    .footer-bottom__links {
      display: flex;
      gap: 20px;
    }

    .footer-bottom__links a {
      color: rgba(255, 255, 255, 0.7);
      font-size: 13px;
    }

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

    /* ===== Responsive ===== */
    @media (max-width: 991px) {
      :root {
        --spacing-section: 40px;
        --nav-height: 56px;
      }

      .main-nav {
        position: fixed;
        top: var(--nav-height);
        right: 0;
        width: 300px;
        height: calc(100vh - var(--nav-height));
        background: #fff;
        border-left: 1px solid var(--color-border);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 24px 20px;
        transform: translateX(100%);
        transition: transform 0.25s ease;
        box-shadow: -6px 0 18px rgba(0, 0, 0, 0.06);
        z-index: 1029;
      }

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

      .main-nav__link {
        width: 100%;
        padding: 18px 12px;
        font-size: 18px;
        border-bottom: 1px solid #F0F0EB;
        color: var(--color-text);
      }

      .main-nav__link.active {
        border-bottom: 1px solid #F0F0EB;
        border-left: 4px solid var(--color-accent);
        padding-left: 10px;
      }

      .nav-toggle {
        display: flex;
      }

      .personnel-grid,
      .insight-grid {
        grid-template-columns: 1fr 1fr;
      }

      .category-stats .container {
        grid-template-columns: repeat(3, 1fr);
      }

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

    @media (max-width: 767px) {
      .personnel-grid,
      .insight-grid {
        grid-template-columns: 1fr;
      }

      .category-stats .container {
        grid-template-columns: 1fr;
      }

      .category-hero h1 {
        font-size: 26px;
      }

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

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

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

      .support-grid__img {
        height: 200px;
      }
    }

/* roulang page: category6 */
:root{
--color-primary:#1A3A2A;
--color-primary-dark:#10251B;
--color-accent:#E6772E;
--color-accent-dark:#C96221;
--color-bg:#FAFAF7;
--color-card:#FFFFFF;
--color-text:#1C1C1E;
--color-text-secondary:#5A5A5A;
--color-border:#E8E8E4;
--color-success:#2E5A41;
--color-danger:#A33A2A;
--color-table-header:#F5F5F2;
--font-serif:'Noto Serif SC','Source Han Serif','Songti SC','SimSun',serif;
--font-sans:'Noto Sans SC','Source Han Sans','PingFang SC','Microsoft YaHei',sans-serif;
--font-mono:'SF Mono','Consolas','Menlo','Courier New',monospace;
--radius-card:8px;
--radius-data-card:4px;
--radius-btn:6px;
--shadow-card:0 2px 8px rgba(0,0,0,0.05);
--shadow-card-hover:0 6px 16px rgba(0,0,0,0.09);
--shadow-nav:0 1px 4px rgba(0,0,0,0.06);
--container-max:1200px;
--nav-height:64px;
--transition-base:0.2s ease;
--transition-hover:0.3s ease;
--spacing-section:64px;
--spacing-card-gap-x:16px;
--spacing-card-gap-y:24px;
}
@media(max-width:767px){
:root{
--spacing-section:40px;
--nav-height:56px;
}
}
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(--color-text);
background-color:var(--color-bg);
min-height:100vh;
}
img{
max-width:100%;
height:auto;
display:block;
}
a{
color:var(--color-primary);
text-decoration:none;
transition:color var(--transition-base),text-decoration-color var(--transition-base);
}
a:hover{
color:var(--color-accent);
text-decoration:underline;
text-underline-offset:4px;
}
a:focus-visible,button:focus-visible,input:focus-visible{
outline:2px solid var(--color-accent);
outline-offset:3px;
}
button{
cursor:pointer;
font-family:var(--font-sans);
border:none;
background:none;
}
input{
font-family:var(--font-sans);
}
.container{
max-width:var(--container-max);
margin:0 auto;
padding:0 24px;
}
section,.section{
padding:var(--spacing-section) 0;
}
.section--alt{
background-color:#F4F4F0;
}
.section--white{
background-color:var(--color-card);
}
.section--tight{
padding:40px 0;
}
.section__header{
margin-bottom:32px;
}
.section__label{
display:inline-block;
font-size:14px;
font-weight:500;
color:var(--color-accent);
letter-spacing:0.08em;
margin-bottom:8px;
text-transform:uppercase;
}
.section__title{
font-family:var(--font-serif);
font-size:24px;
font-weight:700;
color:var(--color-primary);
line-height:1.35;
letter-spacing:0.01em;
}
.section__desc{
font-size:15px;
color:var(--color-text-secondary);
margin-top:10px;
max-width:720px;
line-height:1.8;
}
.site-header{
position:fixed;
top:0;
left:0;
right:0;
height:var(--nav-height);
background:var(--color-card);
border-bottom:1px solid var(--color-border);
z-index:1000;
box-shadow:var(--shadow-nav);
}
.site-header .container{
height:100%;
display:flex;
align-items:center;
justify-content:space-between;
}
.logo{
display:flex;
align-items:center;
gap:10px;
font-family:var(--font-serif);
font-weight:700;
font-size:20px;
color:var(--color-primary);
letter-spacing:0.03em;
white-space:nowrap;
}
.logo:hover{
color:var(--color-primary);
text-decoration:none;
}
.logo__icon{
width:36px;
height:36px;
background:var(--color-primary);
color:#fff;
display:flex;
align-items:center;
justify-content:center;
font-size:18px;
font-weight:700;
border-radius:4px;
letter-spacing:0;
}
.main-nav{
display:flex;
align-items:center;
gap:0;
list-style:none;
}
.main-nav__item{
position:relative;
}
.main-nav__link{
display:block;
padding:20px 16px;
font-size:15px;
font-weight:500;
color:var(--color-text);
letter-spacing:0.02em;
transition:color var(--transition-base);
white-space:nowrap;
}
.main-nav__link:hover{
color:var(--color-accent);
text-decoration:none;
}
.main-nav__link.active{
color:var(--color-primary);
font-weight:700;
}
.main-nav__link.active::after{
content:"";
position:absolute;
left:16px;
right:16px;
bottom:0;
height:3px;
background:var(--color-accent);
border-radius:2px 2px 0 0;
}
.nav-toggle{
display:none;
flex-direction:column;
justify-content:center;
gap:5px;
width:44px;
height:44px;
padding:10px;
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:6px;
z-index:1001;
}
.nav-toggle__bar{
display:block;
width:100%;
height:2px;
background:var(--color-primary);
border-radius:2px;
transition:transform var(--transition-base),opacity var(--transition-base);
}
@media(max-width:991px){
.nav-toggle{
display:flex;
}
.main-nav{
position:fixed;
top:0;
right:0;
bottom:0;
width:300px;
background:var(--color-card);
flex-direction:column;
align-items:stretch;
justify-content:flex-start;
padding:80px 24px 32px;
gap:8px;
transform:translateX(100%);
transition:transform var(--transition-hover);
box-shadow:-8px 0 24px rgba(0,0,0,0.1);
z-index:1000;
overflow-y:auto;
}
.main-nav.open{
transform:translateX(0);
}
.main-nav__link{
padding:14px 16px;
font-size:18px;
border-bottom:1px solid var(--color-border);
}
.main-nav__link.active::after{
display:none;
}
.main-nav__link.active{
background:var(--color-bg);
border-left:4px solid var(--color-accent);
}
}
@media(max-width:767px){
.main-nav__link{
padding:12px 14px;
font-size:16px;
}
}
.hero-category{
padding-top:calc(var(--nav-height) + 48px);
padding-bottom:48px;
background:var(--color-bg);
border-bottom:1px solid var(--color-border);
}
.breadcrumb{
display:flex;
align-items:center;
gap:8px;
font-size:14px;
color:var(--color-text-secondary);
margin-bottom:20px;
flex-wrap:wrap;
}
.breadcrumb a{
color:var(--color-text-secondary);
}
.breadcrumb a:hover{
color:var(--color-accent);
}
.breadcrumb__sep{
color:var(--color-border);
}
.hero-category__title{
font-family:var(--font-serif);
font-size:32px;
font-weight:700;
color:var(--color-primary);
line-height:1.3;
margin-bottom:12px;
}
.hero-category__desc{
font-size:16px;
color:var(--color-text-secondary);
max-width:720px;
line-height:1.8;
}
.stats-strip{
display:grid;
grid-template-columns:repeat(3,1fr);
gap:var(--spacing-card-gap-x);
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:var(--radius-card);
padding:24px;
margin-top:32px;
box-shadow:var(--shadow-card);
}
.stats-strip__item{
text-align:center;
padding:12px 8px;
border-right:1px solid var(--color-border);
}
.stats-strip__item:last-child{
border-right:none;
}
.stats-strip__num{
font-family:var(--font-mono);
font-size:36px;
font-weight:700;
color:var(--color-primary);
line-height:1.2;
}
.stats-strip__label{
font-size:13px;
color:var(--color-text-secondary);
margin-top:4px;
}
@media(max-width:767px){
.stats-strip{
grid-template-columns:1fr;
gap:12px;
}
.stats-strip__item{
border-right:none;
border-bottom:1px solid var(--color-border);
padding:8px 0;
}
.stats-strip__item:last-child{
border-bottom:none;
}
}
.content-list{
display:flex;
flex-direction:column;
gap:var(--spacing-card-gap-y);
}
.resource-card{
display:grid;
grid-template-columns:280px 1fr;
gap:20px;
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:var(--radius-card);
overflow:hidden;
box-shadow:var(--shadow-card);
transition:box-shadow var(--transition-hover),border-color var(--transition-hover);
}
.resource-card:hover{
box-shadow:var(--shadow-card-hover);
border-color:var(--color-primary);
}
.resource-card__img{
position:relative;
min-height:200px;
overflow:hidden;
background:var(--color-table-header);
}
.resource-card__img img{
width:100%;
height:100%;
object-fit:cover;
transition:transform var(--transition-hover);
}
.resource-card:hover .resource-card__img img{
transform:scale(1.05);
}
.resource-card__body{
padding:20px 24px;
display:flex;
flex-direction:column;
justify-content:center;
}
.resource-card__tag{
display:inline-block;
font-size:12px;
font-weight:500;
color:var(--color-accent);
background:rgba(230,119,46,0.1);
padding:2px 10px;
border-radius:20px;
margin-bottom:8px;
width:fit-content;
}
.resource-card__title{
font-family:var(--font-serif);
font-size:19px;
font-weight:700;
color:var(--color-primary);
margin-bottom:8px;
line-height:1.4;
}
.resource-card__summary{
font-size:14px;
color:var(--color-text-secondary);
line-height:1.8;
margin-bottom:12px;
}
.resource-card__meta{
font-size:13px;
color:#8A8A82;
display:flex;
gap:16px;
flex-wrap:wrap;
}
@media(max-width:767px){
.resource-card{
grid-template-columns:1fr;
}
.resource-card__img{
min-height:180px;
}
.resource-card__body{
padding:16px 18px;
}
}
.tag-cloud{
display:flex;
flex-wrap:wrap;
gap:10px;
align-items:center;
}
.tag-cloud__item{
display:inline-block;
padding:6px 16px;
font-size:14px;
font-weight:500;
color:var(--color-primary);
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:20px;
transition:all var(--transition-base);
cursor:default;
}
.tag-cloud__item:hover{
border-color:var(--color-accent);
color:var(--color-accent);
}
.tag-cloud__link{
color:var(--color-accent);
font-weight:500;
text-decoration:none;
}
.tag-cloud__link:hover{
text-decoration:underline;
text-underline-offset:4px;
}
.split-block{
display:grid;
grid-template-columns:1fr 1fr;
gap:40px;
align-items:center;
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:var(--radius-card);
padding:40px;
box-shadow:var(--shadow-card);
}
.split-block__text{
font-size:15px;
color:var(--color-text-secondary);
line-height:1.9;
}
.split-block__text p{
margin-bottom:16px;
}
.split-block__text p:last-child{
margin-bottom:0;
}
.split-block__img{
border-radius:var(--radius-card);
overflow:hidden;
}
.split-block__img img{
width:100%;
height:auto;
object-fit:cover;
}
@media(max-width:767px){
.split-block{
grid-template-columns:1fr;
padding:24px;
gap:24px;
}
}
.extend-read{
display:grid;
grid-template-columns:repeat(3,1fr);
gap:var(--spacing-card-gap-x);
}
.extend-read__card{
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:var(--radius-card);
overflow:hidden;
box-shadow:var(--shadow-card);
transition:box-shadow var(--transition-hover),border-color var(--transition-hover);
}
.extend-read__card:hover{
box-shadow:var(--shadow-card-hover);
border-color:var(--color-primary);
}
.extend-read__img{
height:160px;
overflow:hidden;
background:var(--color-table-header);
}
.extend-read__img img{
width:100%;
height:100%;
object-fit:cover;
transition:transform var(--transition-hover);
}
.extend-read__card:hover .extend-read__img img{
transform:scale(1.05);
}
.extend-read__body{
padding:16px 20px;
}
.extend-read__title{
font-family:var(--font-serif);
font-size:16px;
font-weight:700;
color:var(--color-primary);
margin-bottom:6px;
line-height:1.4;
}
.extend-read__desc{
font-size:13px;
color:var(--color-text-secondary);
line-height:1.7;
}
@media(max-width:991px){
.extend-read{
grid-template-columns:repeat(2,1fr);
}
}
@media(max-width:575px){
.extend-read{
grid-template-columns:1fr;
}
}
.faq-list{
display:flex;
flex-direction:column;
gap:16px;
max-width:820px;
margin:0 auto;
}
.faq-item{
background:var(--color-card);
border:1px solid var(--color-border);
border-radius:var(--radius-card);
overflow:hidden;
box-shadow:var(--shadow-card);
transition:box-shadow var(--transition-base);
}
.faq-item:hover{
box-shadow:var(--shadow-card-hover);
}
.faq-item__question{
width:100%;
display:flex;
align-items:center;
justify-content:space-between;
gap:16px;
padding:18px 24px;
text-align:left;
font-size:16px;
font-weight:600;
color:var(--color-primary);
background:var(--color-card);
transition:background var(--transition-base);
}
.faq-item__question:hover{
background:var(--color-bg);
}
.faq-item__q-icon{
flex-shrink:0;
width:28px;
height:28px;
background:var(--color-primary);
color:#fff;
display:flex;
align-items:center;
justify-content:center;
font-family:var(--font-serif);
font-weight:700;
border-radius:4px;
font-size:14px;
}
.faq-item__toggle{
flex-shrink:0;
font-size:24px;
font-weight:300;
color:var(--color-text-secondary);
transition:transform var(--transition-base);
line-height:1;
}
.faq-item__question[aria-expanded="true"] .faq-item__toggle{
transform:rotate(45deg);
}
.faq-item__answer{
padding:0 24px 20px;
font-size:15px;
color:var(--color-text-secondary);
line-height:1.8;
display:none;
background:var(--color-bg);
margin:0 8px 8px;
border-radius:4px;
}
.faq-item__answer.open{
display:block;
padding:16px 24px;
}
@media(max-width:767px){
.faq-item__question{
padding:14px 16px;
font-size:15px;
}
.faq-item__answer{
padding:0 16px 16px;
font-size:14px;
}
.faq-item__answer.open{
padding:14px 16px;
}
}
.site-footer{
background:var(--color-primary-dark);
color:#D8D8D2;
padding:48px 0 24px;
margin-top:0;
}
.footer-grid{
display:grid;
grid-template-columns:1.4fr 1fr 1fr 1.6fr;
gap:32px;
margin-bottom:32px;
}
.footer-brand{
display:flex;
align-items:center;
gap:10px;
font-family:var(--font-serif);
font-size:20px;
font-weight:700;
color:#fff;
margin-bottom:12px;
}
.footer-brand__icon{
width:36px;
height:36px;
background:var(--color-accent);
color:#fff;
display:flex;
align-items:center;
justify-content:center;
font-size:18px;
font-weight:700;
border-radius:4px;
}
.footer-desc{
font-size:14px;
color:#B0B0AA;
line-height:1.8;
margin-bottom:0;
}
.footer-col__title{
font-size:16px;
font-weight:600;
color:#fff;
margin-bottom:16px;
}
.footer-col__list{
list-style:none;
padding:0;
margin:0;
}
.footer-col__list li{
margin-bottom:8px;
}
.footer-col__list a{
color:#B0B0AA;
font-size:14px;
text-decoration:none;
transition:color var(--transition-base);
}
.footer-col__list a:hover{
color:var(--color-accent);
text-decoration:underline;
text-underline-offset:4px;
}
.footer-bottom{
border-top:1px solid rgba(255,255,255,0.12);
padding-top:20px;
display:flex;
justify-content:space-between;
align-items:center;
flex-wrap:wrap;
gap:12px;
font-size:13px;
color:#8A8A82;
}
.footer-bottom__links{
display:flex;
gap:20px;
}
.footer-bottom__links a{
color:#B0B0AA;
text-decoration:none;
font-size:13px;
}
.footer-bottom__links a:hover{
color:var(--color-accent);
text-decoration:underline;
}
@media(max-width:991px){
.footer-grid{
grid-template-columns:1fr 1fr;
gap:24px;
}
}
@media(max-width:575px){
.footer-grid{
grid-template-columns:1fr;
gap:20px;
}
.footer-bottom{
flex-direction:column;
align-items:flex-start;
}
}

/* roulang page: category5 */
:root {
            --color-primary: #1A3A2A;
            --color-primary-dark: #10251B;
            --color-accent: #E6772E;
            --color-accent-dark: #C96221;
            --color-bg: #FAFAF7;
            --color-card: #FFFFFF;
            --color-text: #1C1C1E;
            --color-text-secondary: #5A5A5A;
            --color-border: #E8E8E4;
            --color-success: #2E5A41;
            --color-danger: #A33A2A;
            --color-table-header: #F5F5F2;
            --font-serif: 'Noto Serif SC', 'Source Han Serif', 'Songti SC', 'SimSun', serif;
            --font-sans: 'Noto Sans SC', 'Source Han Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Menlo', 'Courier New', monospace;
            --radius-card: 8px;
            --radius-data-card: 4px;
            --radius-btn: 6px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.09);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.06);
            --container-max: 1200px;
            --nav-height: 64px;
            --transition-base: 0.2s ease;
            --transition-hover: 0.3s ease;
            --spacing-section: 64px;
            --spacing-card-gap-x: 16px;
            --spacing-card-gap-y: 24px;
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 40px;
                --nav-height: 56px;
            }
        }

        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(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            padding-top: var(--nav-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-base), text-decoration-color var(--transition-base);
        }
        a:hover {
            color: var(--color-accent);
            text-decoration: underline;
            text-underline-offset: 4px;
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
        }
        button {
            cursor: pointer;
            font-family: var(--font-sans);
            border: none;
            background: none;
        }
        input {
            font-family: var(--font-sans);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        section,
        .section {
            padding: var(--spacing-section) 0;
        }
        .section--alt {
            background-color: #F4F4F0;
        }
        .section--white {
            background-color: var(--color-card);
        }
        .section--tight {
            padding: 40px 0;
        }
        .section__header {
            margin-bottom: 32px;
        }
        .section__label {
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-accent);
            letter-spacing: 0.08em;
            margin-bottom: 8px;
            text-transform: uppercase;
        }
        .section__title {
            font-family: var(--font-serif);
            font-size: 24px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            letter-spacing: 0.01em;
        }
        .section__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            margin-top: 10px;
            max-width: 720px;
            line-height: 1.8;
        }

        /* ===== Header / Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: var(--nav-height);
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            z-index: 1000;
            box-shadow: var(--shadow-nav);
        }
        .site-header .container {
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            color: var(--color-primary);
            letter-spacing: 0.03em;
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .logo__icon {
            width: 36px;
            height: 36px;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            border-radius: 4px;
            letter-spacing: 0;
            flex-shrink: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 0;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .main-nav__item {
            position: relative;
        }
        .main-nav__link {
            display: block;
            padding: 20px 14px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text);
            letter-spacing: 0.02em;
            transition: color var(--transition-base);
            white-space: nowrap;
        }
        .main-nav__link:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .main-nav__link.active {
            color: var(--color-primary);
            font-weight: 700;
        }
        .main-nav__link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 14px;
            right: 14px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 2px 2px 0 0;
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 4px;
            background: transparent;
        }
        .nav-toggle__bar {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--color-primary);
            transition: all 0.3s ease;
        }
        .nav-toggle[aria-expanded='true'] .nav-toggle__bar--top {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle[aria-expanded='true'] .nav-toggle__bar--middle {
            opacity: 0;
        }
        .nav-toggle[aria-expanded='true'] .nav-toggle__bar--bottom {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-section {
            padding: 28px 0 0;
            background: var(--color-bg);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--color-text-secondary);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .breadcrumb li + li::before {
            content: '/';
            color: #B0B0AA;
            margin-right: 4px;
        }
        .breadcrumb a {
            color: var(--color-primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--color-accent);
        }
        .breadcrumb .current {
            color: var(--color-text-secondary);
            font-weight: 500;
        }

        /* ===== Page Header / H1 ===== */
        .page-header {
            padding: 32px 0 40px;
            background: var(--color-bg);
            border-bottom: 1px solid var(--color-border);
        }
        .page-header__title {
            font-family: var(--font-serif);
            font-size: 32px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.3;
            letter-spacing: 0.01em;
            margin: 0 0 12px;
        }
        .page-header__desc {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            max-width: 720px;
            margin: 0;
        }

        /* ===== Stats Mini Cards ===== */
        .stats-mini-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card-gap-x);
        }
        .stats-mini-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-data-card);
            padding: 20px 24px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), transform var(--transition-hover);
        }
        .stats-mini-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .stats-mini-card__number {
            font-family: var(--font-mono);
            font-size: 36px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            letter-spacing: -0.02em;
        }
        .stats-mini-card__label {
            font-size: 13px;
            color: var(--color-text-secondary);
            margin-top: 6px;
            letter-spacing: 0.02em;
        }

        /* ===== Insight List ===== */
        .insight-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .insight-list__item {
            display: grid;
            grid-template-columns: 220px 1fr;
            gap: 20px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
        }
        .insight-list__item:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .insight-list__image {
            width: 220px;
            height: 148px;
            border-radius: 4px;
            overflow: hidden;
            flex-shrink: 0;
        }
        .insight-list__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-hover);
        }
        .insight-list__item:hover .insight-list__image img {
            transform: scale(1.05);
        }
        .insight-list__body {
            display: flex;
            flex-direction: column;
            justify-content: flex-start;
            gap: 8px;
        }
        .insight-list__title {
            font-family: var(--font-serif);
            font-size: 18px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin: 0;
        }
        .insight-list__title a {
            color: var(--color-primary);
        }
        .insight-list__title a:hover {
            color: var(--color-accent);
        }
        .insight-list__excerpt {
            font-size: 14px;
            color: var(--color-text-secondary);
            line-height: 1.7;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .insight-list__meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #8A8A84;
            margin-top: auto;
        }
        .insight-list__tag {
            display: inline-block;
            background: #F5F5F2;
            color: var(--color-text-secondary);
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 12px;
            font-weight: 500;
        }

        /* ===== Tags Zone ===== */
        .tags-zone {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 12px;
        }
        .tag-chip {
            display: inline-block;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: 20px;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition-base);
            cursor: default;
        }
        .tag-chip:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: #FFF;
        }
        .tag-chip--link {
            cursor: pointer;
            border-color: var(--color-accent);
            color: var(--color-accent);
            font-weight: 600;
        }
        .tag-chip--link:hover {
            background: var(--color-accent);
            color: #fff;
            text-decoration: none;
        }

        /* ===== Half Text Image ===== */
        .half-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .half-block__image {
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .half-block__image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
        }
        .half-block__title {
            font-family: var(--font-serif);
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin: 0 0 12px;
        }
        .half-block__text {
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            margin: 0;
        }

        /* ===== Extended Reading Cards ===== */
        .extended-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card-gap-x);
        }
        .extended-card {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow var(--transition-hover), border-color var(--transition-hover);
        }
        .extended-card:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: var(--color-primary);
        }
        .extended-card__image {
            height: 160px;
            overflow: hidden;
        }
        .extended-card__image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-hover);
        }
        .extended-card:hover .extended-card__image img {
            transform: scale(1.05);
        }
        .extended-card__body {
            padding: 16px 20px;
        }
        .extended-card__title {
            font-family: var(--font-serif);
            font-size: 16px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.4;
            margin: 0 0 6px;
        }
        .extended-card__text {
            font-size: 13px;
            color: var(--color-text-secondary);
            line-height: 1.6;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ===== FAQ Accordion ===== */
        .faq-accordion {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: border-color var(--transition-base);
        }
        .faq-item.open {
            border-color: var(--color-primary);
        }
        .faq-item__question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--color-text);
            line-height: 1.5;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color var(--transition-base);
        }
        .faq-item__question:hover {
            color: var(--color-accent);
        }
        .faq-item__q-label {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .faq-item__q-icon {
            width: 28px;
            height: 28px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .faq-item__toggle-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--color-text-secondary);
            flex-shrink: 0;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-item__toggle-icon {
            transform: rotate(45deg);
        }
        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-item.open .faq-item__answer {
            max-height: 200px;
        }
        .faq-item__answer-inner {
            padding: 0 20px 18px 58px;
            font-size: 15px;
            color: var(--color-text-secondary);
            line-height: 1.8;
            background: #F9F9F6;
            border-top: 1px dashed var(--color-border);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary);
            color: #D8D8D2;
            padding: 48px 0 24px;
            margin-top: var(--spacing-section);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-serif);
            font-weight: 700;
            font-size: 20px;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand__icon {
            width: 32px;
            height: 32px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .footer-desc {
            font-size: 13px;
            color: #B0B0AA;
            line-height: 1.8;
            margin: 0;
        }
        .footer-col__title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }
        .footer-col__list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col__list li {
            margin-bottom: 8px;
        }
        .footer-col__list a {
            color: #C8C8C2;
            font-size: 14px;
            transition: color var(--transition-base);
        }
        .footer-col__list a:hover {
            color: var(--color-accent);
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: #B0B0AA;
        }
        .footer-bottom__links {
            display: flex;
            gap: 16px;
        }
        .footer-bottom__links a {
            color: #C8C8C2;
            font-size: 13px;
        }
        .footer-bottom__links a:hover {
            color: var(--color-accent);
        }

        /* ===== Buttons ===== */
        .btn-primary {
            display: inline-block;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            transition: all var(--transition-base);
            border: 1.5px solid var(--color-accent);
        }
        .btn-primary:hover {
            background: var(--color-accent-dark);
            border-color: var(--color-accent-dark);
            color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
        }
        .btn-secondary {
            display: inline-block;
            background: transparent;
            color: var(--color-primary);
            border-radius: var(--radius-btn);
            padding: 10px 20px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.02em;
            border: 1.5px solid var(--color-primary);
            transition: all var(--transition-base);
        }
        .btn-secondary:hover {
            background: var(--color-primary);
            color: #fff;
            transform: translateY(-2px);
            text-decoration: none;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .main-nav__link {
                padding: 20px 10px;
                font-size: 14px;
            }
            .insight-list__item {
                grid-template-columns: 180px 1fr;
            }
            .insight-list__image {
                width: 180px;
                height: 130px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }
        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-card);
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px;
                box-shadow: var(--shadow-nav);
                max-height: 0;
                overflow: hidden;
                transition: max-height 0.4s ease;
            }
            .main-nav.open {
                max-height: 500px;
            }
            .main-nav__link {
                padding: 14px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--color-border);
            }
            .main-nav__link.active::after {
                display: none;
            }
            .main-nav__link.active {
                color: var(--color-accent);
            }
            .page-header__title {
                font-size: 24px;
            }
            .stats-mini-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .stats-mini-card__number {
                font-size: 28px;
            }
            .insight-list__item {
                grid-template-columns: 1fr;
                gap: 12px;
                padding: 14px;
            }
            .insight-list__image {
                width: 100%;
                height: 180px;
            }
            .half-block {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .half-block__image img {
                height: 220px;
            }
            .extended-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .section__title {
                font-size: 20px;
            }
            .breadcrumb-section {
                padding-top: 16px;
            }
            .page-header {
                padding: 20px 0 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo {
                font-size: 17px;
            }
            .logo__icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }
            .page-header__title {
                font-size: 22px;
            }
            .faq-item__question {
                font-size: 14px;
                padding: 14px 16px;
            }
            .faq-item__answer-inner {
                padding: 0 14px 14px 42px;
                font-size: 14px;
            }
            .faq-item__q-icon {
                width: 24px;
                height: 24px;
                font-size: 12px;
            }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}