/* roulang page: index */
:root {
            --color-primary: #1b2d50;
            --color-primary-light: #243860;
            --color-primary-dark: #0f1d38;
            --color-accent: #c8943e;
            --color-accent-light: #d9aa55;
            --color-accent-dark: #a87a2e;
            --color-highlight: #3b7ddd;
            --color-highlight-light: #5b93e5;
            --color-bg: #f5f6f8;
            --color-bg-alt: #edf0f4;
            --color-surface: #ffffff;
            --color-surface-hover: #fafbfc;
            --color-text: #1a1a1a;
            --color-text-secondary: #4a4f58;
            --color-text-muted: #6b7280;
            --color-text-light: #9ca3af;
            --color-border: #e2e5ea;
            --color-border-light: #eef0f3;
            --color-success: #10b981;
            --color-warning: #f59e0b;
            --color-danger: #ef4444;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
            --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.10);
            --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.12);
            --shadow-card-hover: 0 12px 36px rgba(0, 0, 0, 0.13);
            --spacing-xs: 6px;
            --spacing-sm: 12px;
            --spacing-md: 20px;
            --spacing-lg: 32px;
            --spacing-xl: 48px;
            --spacing-2xl: 64px;
            --spacing-3xl: 80px;
            --font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --font-mono: 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
            --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.65;
            color: var(--color-text);
            background-color: var(--color-bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

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

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

        ul,
        ol {
            list-style: none;
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            color: var(--color-primary);
        }

        h1 {
            font-size: clamp(2rem, 4.5vw, 3.2rem);
        }
        h2 {
            font-size: clamp(1.6rem, 3.2vw, 2.2rem);
        }
        h3 {
            font-size: clamp(1.2rem, 2.2vw, 1.5rem);
        }
        h4 {
            font-size: clamp(1rem, 1.6vw, 1.2rem);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-md);
        }

        .container--narrow {
            max-width: 860px;
        }

        .container--wide {
            max-width: 1320px;
        }

        /* ========== HEADER / NAV ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            transition: box-shadow var(--transition-base);
        }

        .header--scrolled {
            box-shadow: var(--shadow-md);
        }

        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-sm) 0;
            min-height: 64px;
        }

        .header__logo {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            flex-shrink: 0;
            letter-spacing: 0.02em;
        }

        .header__logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .nav-panel {
            display: flex;
            align-items: center;
            gap: var(--spacing-xs);
            background: var(--color-bg-alt);
            border-radius: var(--radius-lg);
            padding: 5px 6px;
            border: 1px solid var(--color-border-light);
        }

        .nav-panel__item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 9px 16px;
            border-radius: var(--radius-md);
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            border: 1.5px solid transparent;
            background: transparent;
        }

        .nav-panel__item:hover {
            color: var(--color-primary);
            background: var(--color-surface);
            border-color: var(--color-border);
            box-shadow: var(--shadow-xs);
        }

        .nav-panel__item--active {
            color: #fff;
            background: var(--color-primary);
            border-color: var(--color-primary);
            box-shadow: var(--shadow-sm);
        }

        .nav-panel__item--active:hover {
            color: #fff;
            background: var(--color-primary-light);
            border-color: var(--color-primary-light);
        }

        .nav-panel__item i {
            font-size: 0.85rem;
            opacity: 0.8;
        }

        .header__cta {
            flex-shrink: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 24px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            line-height: 1.4;
            transition: all var(--transition-fast);
            white-space: nowrap;
            cursor: pointer;
            letter-spacing: 0.01em;
        }

        .btn--primary {
            background: var(--color-accent);
            color: #fff;
            border: 2px solid var(--color-accent);
            box-shadow: 0 2px 8px rgba(200, 148, 62, 0.3);
        }

        .btn--primary:hover {
            background: var(--color-accent-light);
            border-color: var(--color-accent-light);
            box-shadow: 0 4px 16px rgba(200, 148, 62, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn--primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 6px rgba(200, 148, 62, 0.3);
        }

        .btn--outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-border);
        }

        .btn--outline:hover {
            border-color: var(--color-accent);
            color: var(--color-accent);
            background: rgba(200, 148, 62, 0.04);
        }

        .btn--lg {
            padding: 14px 32px;
            font-size: 1rem;
            border-radius: var(--radius-lg);
            letter-spacing: 0.02em;
        }

        .btn--white {
            background: #fff;
            color: var(--color-primary);
            border: 2px solid #fff;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
        }

        .btn--white:hover {
            background: #f8f9fb;
            border-color: #f8f9fb;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.15);
            transform: translateY(-1px);
            color: var(--color-primary);
        }

        .mobile-menu-toggle {
            display: none;
            width: 40px;
            height: 40px;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--color-bg-alt);
            border: 1px solid var(--color-border-light);
            font-size: 1.3rem;
            color: var(--color-text-secondary);
            cursor: pointer;
            transition: all var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: var(--color-surface);
            color: var(--color-primary);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 64px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            z-index: 999;
            padding: var(--spacing-md);
            flex-direction: column;
            gap: var(--spacing-xs);
            overflow-y: auto;
            border-top: 1px solid var(--color-border-light);
        }

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

        .mobile-menu__item {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 14px 18px;
            border-radius: var(--radius-md);
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text-secondary);
            transition: all var(--transition-fast);
            border: 1.5px solid transparent;
        }

        .mobile-menu__item:hover,
        .mobile-menu__item--active {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
        }

        .mobile-menu__cta {
            margin-top: var(--spacing-sm);
        }

        /* ========== HERO ========== */
        .hero {
            position: relative;
            min-height: 560px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background-color: var(--color-primary-dark);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 29, 56, 0.88) 0%, rgba(27, 45, 80, 0.78) 40%, rgba(15, 29, 56, 0.85) 100%);
            z-index: 1;
        }

        .hero__content {
            position: relative;
            z-index: 2;
            padding: var(--spacing-3xl) 0;
            color: #fff;
        }

        .hero__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(200, 148, 62, 0.2);
            border: 1px solid rgba(200, 148, 62, 0.35);
            color: var(--color-accent-light);
            padding: 6px 14px;
            border-radius: 50px;
            font-size: 0.82rem;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.03em;
        }

        .hero__badge i {
            font-size: 0.7rem;
        }

        .hero__title {
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.03em;
            line-height: 1.2;
        }

        .hero__title span {
            color: var(--color-accent-light);
            position: relative;
        }

        .hero__desc {
            font-size: clamp(1rem, 1.6vw, 1.15rem);
            color: rgba(255, 255, 255, 0.78);
            max-width: 580px;
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
        }

        .hero__actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .hero__features-row {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
            padding-top: var(--spacing-lg);
            border-top: 1px solid rgba(255, 255, 255, 0.12);
        }

        .hero__feature-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255, 255, 255, 0.75);
            font-size: 0.9rem;
            font-weight: 500;
        }

        .hero__feature-item i {
            color: var(--color-accent-light);
            font-size: 1rem;
        }

        /* ========== SECTION COMMON ========== */
        .section {
            padding: var(--spacing-2xl) 0;
        }

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

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

        .section__header {
            text-align: center;
            margin-bottom: var(--spacing-xl);
        }

        .section__label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--color-accent);
            margin-bottom: var(--spacing-xs);
        }

        .section__title {
            margin-bottom: var(--spacing-sm);
        }

        .section__subtitle {
            color: var(--color-text-muted);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }

        .section--dark .section__subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .section--dark .section__title {
            color: #fff;
        }
        .section--dark .section__label {
            color: var(--color-accent-light);
        }

        /* ========== FEATURE CARDS ========== */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-md);
        }

        .feature-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-highlight) 100%);
            opacity: 0;
            transition: opacity var(--transition-base);
        }

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

        .feature-card:hover::before {
            opacity: 1;
        }

        .feature-card__icon {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: var(--spacing-md);
            flex-shrink: 0;
        }

        .feature-card__icon--blue {
            background: #e8f0fe;
            color: #3b7ddd;
        }
        .feature-card__icon--gold {
            background: #fdf3e0;
            color: #c8943e;
        }
        .feature-card__icon--green {
            background: #e6f7ee;
            color: #10b981;
        }

        .feature-card__title {
            font-size: 1.1rem;
            margin-bottom: var(--spacing-xs);
            color: var(--color-primary);
        }

        .feature-card__desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== CATEGORY ENTRY PANEL ========== */
        .category-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-md);
            align-items: stretch;
        }

        .category-card {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .category-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
            border-color: transparent;
        }

        .category-card__image {
            width: 100%;
            height: 200px;
            object-fit: cover;
            display: block;
        }

        .category-card__body {
            padding: var(--spacing-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-xs);
        }

        .category-card__tag {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        .category-card__title {
            font-size: 1.2rem;
            color: var(--color-primary);
        }

        .category-card__desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
            flex: 1;
        }

        .category-card__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-highlight);
            transition: gap var(--transition-fast);
            margin-top: auto;
        }

        .category-card__link:hover {
            gap: 10px;
            color: var(--color-highlight-light);
        }

        .category-card__link i {
            font-size: 0.75rem;
            transition: transform var(--transition-fast);
        }

        .category-card__link:hover i {
            transform: translateX(3px);
        }

        /* ========== NEWS LIST ========== */
        .news-list {
            display: grid;
            gap: var(--spacing-sm);
        }

        .news-item {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            background: var(--color-surface);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
        }

        .news-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: transparent;
            background: var(--color-surface-hover);
        }

        .news-item__thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--color-bg-alt);
        }

        .news-item__info {
            flex: 1;
            min-width: 0;
        }

        .news-item__title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .news-item__meta {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .news-item__arrow {
            flex-shrink: 0;
            color: var(--color-text-light);
            transition: all var(--transition-fast);
            font-size: 0.85rem;
        }

        .news-item:hover .news-item__arrow {
            color: var(--color-accent);
            transform: translateX(4px);
        }

        .news-empty {
            text-align: center;
            padding: var(--spacing-xl);
            color: var(--color-text-muted);
            font-size: 0.95rem;
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--color-border);
        }

        /* ========== STATS ========== */
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
        }

        .stat-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            transition: all var(--transition-base);
        }

        .stat-card:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        .stat-card__number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-accent-light);
            letter-spacing: 0.02em;
            line-height: 1.2;
        }

        .stat-card__label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ========== STEPS ========== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-md);
            counter-reset: step;
        }

        .step-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition-base);
            counter-increment: step;
        }

        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
            border-color: transparent;
        }

        .step-item__number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: var(--spacing-sm);
        }

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

        .step-item__desc {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* ========== FAQ ========== */
        .faq-list {
            display: grid;
            gap: var(--spacing-sm);
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-item__trigger {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-md) var(--spacing-lg);
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-primary);
            text-align: left;
            cursor: pointer;
            transition: all var(--transition-fast);
            gap: var(--spacing-sm);
        }

        .faq-item__trigger:hover {
            background: var(--color-surface-hover);
        }

        .faq-item__trigger i {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item--open .faq-item__trigger i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-item__content {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item--open .faq-item__content {
            max-height: 300px;
        }

        .faq-item__content-inner {
            padding: 0 var(--spacing-lg) var(--spacing-lg);
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA BANNER ========== */
        .cta-banner {
            background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
            border-radius: var(--radius-2xl);
            padding: var(--spacing-2xl);
            text-align: center;
            position: relative;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .cta-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(200, 148, 62, 0.08);
            pointer-events: none;
        }

        .cta-banner__title {
            color: #fff;
            font-size: clamp(1.4rem, 2.6vw, 1.9rem);
            margin-bottom: var(--spacing-sm);
            position: relative;
            z-index: 1;
        }

        .cta-banner__desc {
            color: rgba(255, 255, 255, 0.7);
            font-size: 1rem;
            margin-bottom: var(--spacing-lg);
            position: relative;
            z-index: 1;
        }

        .cta-banner__actions {
            display: flex;
            gap: var(--spacing-sm);
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-primary-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            font-size: 0.9rem;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: var(--spacing-xl);
            margin-bottom: var(--spacing-xl);
        }

        .footer__brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-sm);
        }

        .footer__brand-desc {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.5);
            line-height: 1.6;
        }

        .footer__col-title {
            font-weight: 700;
            color: #fff;
            font-size: 0.9rem;
            margin-bottom: var(--spacing-sm);
            letter-spacing: 0.03em;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer__links a {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

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

        .footer__bottom {
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.8rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .features-grid {
                grid-template-columns: repeat(3, 1fr);
                gap: var(--spacing-sm);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-panel {
                grid-template-columns: 1fr;
            }
            .footer__grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
            .nav-panel {
                gap: 2px;
                padding: 4px 5px;
            }
            .nav-panel__item {
                padding: 8px 12px;
                font-size: 0.82rem;
                gap: 4px;
            }
            .nav-panel__item i {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .header__inner {
                min-height: 56px;
            }
            .nav-panel {
                display: none;
            }
            .header__cta {
                display: none;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero {
                min-height: 440px;
            }
            .hero__features-row {
                gap: var(--spacing-md);
            }
            .features-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: var(--spacing-sm);
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-sm);
            }
            .category-panel {
                grid-template-columns: 1fr;
            }
            .section {
                padding: var(--spacing-xl) 0;
            }
            .cta-banner {
                padding: var(--spacing-xl) var(--spacing-md);
                border-radius: var(--radius-xl);
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }
            .news-item__thumb {
                width: 60px;
                height: 45px;
            }
            .news-item {
                padding: var(--spacing-sm);
                gap: var(--spacing-sm);
            }
            .stat-card__number {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .hero {
                min-height: 380px;
            }
            .hero__content {
                padding: var(--spacing-xl) 0;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xs);
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            .hero__actions {
                flex-direction: column;
            }
            .hero__actions .btn {
                width: 100%;
                justify-content: center;
            }
            .cta-banner__actions {
                flex-direction: column;
            }
            .cta-banner__actions .btn {
                width: 100%;
                justify-content: center;
            }
            .section__header {
                margin-bottom: var(--spacing-lg);
            }
            .news-item__title {
                font-size: 0.85rem;
            }
        }

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

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .animate-in {
            animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a3a5c;
            --color-primary-light: #1e4d7b;
            --color-primary-dark: #0f2440;
            --color-accent: #c8963e;
            --color-accent-light: #d4a85c;
            --color-accent-glow: #e8c97a;
            --color-bg: #f5f6f9;
            --color-surface: #ffffff;
            --color-surface-alt: #eef1f6;
            --color-text: #1e293b;
            --color-text-secondary: #5c6b7e;
            --color-text-muted: #8895a7;
            --color-border: #dde3ed;
            --color-border-light: #e8ecf2;
            --color-success: #2d8a56;
            --color-warning: #d4892a;
            --color-danger: #c0392b;
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-2xl: 24px;
            --shadow-sm: 0 1px 3px rgba(15,36,64,0.06);
            --shadow-md: 0 4px 16px rgba(15,36,64,0.08);
            --shadow-lg: 0 8px 32px rgba(15,36,64,0.10);
            --shadow-xl: 0 16px 48px rgba(15,36,64,0.12);
            --shadow-card: 0 2px 12px rgba(15,36,64,0.07);
            --shadow-card-hover: 0 8px 28px rgba(15,36,64,0.13);
            --transition-fast: 0.15s ease;
            --transition-base: 0.25s ease;
            --transition-slow: 0.35s ease;
            --container-max: 1200px;
            --container-narrow: 960px;
            --nav-height: 72px;
            --section-gap: 64px;
            --section-gap-sm: 40px;
        }

        *, *::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: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
        }

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

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

        button, input {
            font-family: inherit;
            font-size: inherit;
        }

        .container {
            width: 100%;
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }

        .container--narrow {
            max-width: var(--container-narrow);
        }

        /* ========== HEADER & NAV ========== */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255,255,255,0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition-base);
        }

        .header__inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .header__logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
        }

        .header__logo i {
            color: var(--color-accent);
            font-size: 1.35rem;
            transition: transform var(--transition-base);
        }

        .header__logo:hover {
            color: var(--color-primary-light);
        }

        .header__logo:hover i {
            transform: rotate(-10deg) scale(1.1);
        }

        /* 卡片化导航面板 */
        .nav-panel {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-surface-alt);
            border-radius: var(--radius-xl);
            padding: 5px;
            box-shadow: inset 0 1px 2px rgba(15,36,64,0.04);
        }

        .nav-panel__item {
            display: flex;
            align-items: center;
            gap: 7px;
            padding: 10px 18px;
            border-radius: var(--radius-lg);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            white-space: nowrap;
            transition: all var(--transition-base);
            cursor: pointer;
            position: relative;
        }

        .nav-panel__item i {
            font-size: 0.9rem;
            transition: transform var(--transition-base);
            color: var(--color-text-muted);
        }

        .nav-panel__item:hover {
            color: var(--color-primary);
            background: rgba(26,58,92,0.05);
        }

        .nav-panel__item:hover i {
            color: var(--color-accent);
            transform: translateY(-1px);
        }

        .nav-panel__item--active {
            background: var(--color-surface) !important;
            color: var(--color-primary) !important;
            font-weight: 600;
            box-shadow: var(--shadow-md);
        }

        .nav-panel__item--active i {
            color: var(--color-accent) !important;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 10px 22px;
            background: var(--color-accent);
            color: #fff;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
            transition: all var(--transition-base);
            box-shadow: 0 2px 10px rgba(200,150,62,0.25);
        }

        .nav-cta:hover {
            background: var(--color-accent-light);
            color: #fff;
            box-shadow: 0 4px 18px rgba(200,150,62,0.35);
            transform: translateY(-1px);
        }

        .nav-cta i {
            font-size: 0.85rem;
        }

        /* 移动端菜单按钮 */
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--color-primary);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-surface-alt);
        }

        /* ========== PAGE BANNER ========== */
        .page-banner {
            position: relative;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15,36,64,0.88) 0%, rgba(26,58,92,0.78) 40%, rgba(15,36,64,0.85) 100%);
            z-index: 1;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 60px;
            background: linear-gradient(to top, var(--color-bg) 0%, transparent 100%);
            z-index: 2;
        }

        .page-banner__content {
            position: relative;
            z-index: 3;
            padding: 60px 0 40px;
            max-width: 700px;
        }

        .page-banner__badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(200,150,62,0.2);
            border: 1px solid rgba(200,150,62,0.35);
            color: var(--color-accent-glow);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            margin-bottom: 18px;
            backdrop-filter: blur(6px);
        }

        .page-banner__badge i {
            font-size: 0.8rem;
        }

        .page-banner__title {
            font-size: 2.4rem;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 14px;
            letter-spacing: -0.02em;
        }

        .page-banner__title span {
            color: var(--color-accent-glow);
        }

        .page-banner__desc {
            font-size: 1.1rem;
            color: rgba(255,255,255,0.8);
            line-height: 1.7;
            max-width: 540px;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
            font-size: 0.875rem;
            color: rgba(255,255,255,0.7);
            margin-bottom: 20px;
        }

        .breadcrumb a {
            color: rgba(255,255,255,0.85);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb__sep {
            color: rgba(255,255,255,0.4);
            font-size: 0.7rem;
        }

        .breadcrumb__current {
            color: var(--color-accent-glow);
            font-weight: 500;
        }

        /* ========== SECTION BASE ========== */
        .section {
            padding: var(--section-gap) 0;
        }

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

        .section--sm {
            padding: var(--section-gap-sm) 0;
        }

        .section__header {
            text-align: center;
            margin-bottom: 44px;
        }

        .section__label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-accent);
            text-transform: uppercase;
            letter-spacing: 0.04em;
            margin-bottom: 10px;
        }

        .section__label::before {
            content: '';
            width: 20px;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
        }

        .section__title {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.35;
            letter-spacing: -0.01em;
        }

        .section__subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            margin-top: 8px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        /* ========== 分类介绍卡片 ========== */
        .intro-card {
            background: var(--color-surface);
            border-radius: var(--radius-2xl);
            padding: 40px;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--color-border-light);
        }

        .intro-card__grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }

        .intro-card__image-wrap {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            aspect-ratio: 4/3;
        }

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

        .intro-card__image-wrap:hover img {
            transform: scale(1.04);
        }

        .intro-card__text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .intro-card__text p {
            color: var(--color-text-secondary);
            line-height: 1.75;
            margin-bottom: 10px;
        }

        .intro-card__features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }

        .intro-card__features li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.5;
        }

        .intro-card__features li i {
            color: var(--color-success);
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* ========== 文章列表卡片网格 ========== */
        .articles-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .article-card__image {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }

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

        .article-card:hover .article-card__image img {
            transform: scale(1.06);
        }

        .article-card__badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--color-primary);
            color: #fff;
            padding: 5px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            z-index: 2;
            box-shadow: 0 2px 8px rgba(15,36,64,0.3);
        }

        .article-card__body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .article-card__date {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .article-card__title {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-primary);
            line-height: 1.4;
            margin-bottom: 10px;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card__title {
            color: var(--color-accent);
        }

        .article-card__excerpt {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 14px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card__link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-accent);
            transition: all var(--transition-fast);
            margin-top: auto;
        }

        .article-card__link i {
            transition: transform var(--transition-fast);
            font-size: 0.8rem;
        }

        .article-card__link:hover {
            color: var(--color-accent-light);
        }

        .article-card__link:hover i {
            transform: translateX(3px);
        }

        /* ========== 安全提示卡片 ========== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .tip-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 30px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: 18px;
            align-items: flex-start;
            transition: all var(--transition-base);
        }

        .tip-card:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--color-border);
        }

        .tip-card__icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
        }

        .tip-card__icon--shield {
            background: rgba(45,138,86,0.1);
            color: var(--color-success);
        }

        .tip-card__icon--key {
            background: rgba(200,150,62,0.1);
            color: var(--color-accent);
        }

        .tip-card__icon--eye {
            background: rgba(30,77,123,0.1);
            color: var(--color-primary-light);
        }

        .tip-card__icon--bell {
            background: rgba(212,137,42,0.1);
            color: var(--color-warning);
        }

        .tip-card__content h4 {
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 6px;
        }

        .tip-card__content p {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            line-height: 1.6;
        }

        /* ========== 流程步骤 ========== */
        .steps-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            counter-reset: step;
        }

        .step-item {
            background: var(--color-surface);
            border-radius: var(--radius-xl);
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition-base);
            counter-increment: step;
        }

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

        .step-item__number {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            font-weight: 700;
            font-size: 1.1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            box-shadow: 0 4px 14px rgba(26,58,92,0.3);
        }

        .step-item h4 {
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .step-item p {
            font-size: 0.875rem;
            color: var(--color-text-secondary);
            line-height: 1.55;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition-base);
        }

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

        .faq-item__question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 20px 24px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-primary);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            transition: color var(--transition-fast);
            line-height: 1.5;
        }

        .faq-item__question:hover {
            color: var(--color-accent);
        }

        .faq-item__question i {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-base);
            flex-shrink: 0;
        }

        .faq-item--open .faq-item__question i {
            transform: rotate(180deg);
            color: var(--color-accent);
        }

        .faq-item__answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }

        .faq-item--open .faq-item__answer {
            max-height: 300px;
        }

        .faq-item__answer-inner {
            padding: 0 24px 20px;
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
            border-radius: var(--radius-2xl);
            padding: 52px 48px;
            text-align: center;
            color: #fff;
            box-shadow: var(--shadow-xl);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255,255,255,0.04);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            left: -30px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255,255,255,0.03);
            pointer-events: none;
        }

        .cta-section__content {
            position: relative;
            z-index: 1;
        }

        .cta-section h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 1rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 28px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.6;
        }

        .cta-section__btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-accent);
            color: #fff;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-base);
            box-shadow: 0 4px 20px rgba(200,150,62,0.4);
        }

        .cta-section__btn:hover {
            background: var(--color-accent-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(200,150,62,0.5);
            color: #fff;
        }

        .cta-section__btn i {
            transition: transform var(--transition-base);
        }

        .cta-section__btn:hover i {
            transform: translateX(3px);
        }

        /* ========== FOOTER ========== */
        .footer {
            background: var(--color-primary-dark);
            color: rgba(255,255,255,0.8);
            padding: 48px 0 0;
            margin-top: var(--section-gap);
        }

        .footer__grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .footer__brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .footer__brand-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 320px;
        }

        .footer__col-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }

        .footer__links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer__links a {
            font-size: 0.9rem;
            color: rgba(255,255,255,0.6);
            transition: color var(--transition-fast);
        }

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

        .footer__bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.4);
        }

        /* ========== 分页 ========== */
        .pagination {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 6px;
            margin-top: 40px;
        }

        .pagination__btn {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-md);
            border: 1px solid var(--color-border);
            background: var(--color-surface);
            color: var(--color-text);
            font-weight: 500;
            font-size: 0.9rem;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--transition-fast);
        }

        .pagination__btn:hover {
            background: var(--color-surface-alt);
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

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

        .pagination__btn--disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .articles-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .tips-grid {
                grid-template-columns: 1fr 1fr;
            }
            .intro-card__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .intro-card {
                padding: 28px;
            }
            .page-banner__title {
                font-size: 2rem;
            }
            .section__title {
                font-size: 1.55rem;
            }
            .nav-cta {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .header__inner {
                flex-wrap: wrap;
                height: auto;
                padding: 10px 0;
                gap: 10px;
            }
            .nav-panel {
                order: 3;
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                gap: 2px;
                padding: 4px;
                -webkit-overflow-scrolling: touch;
            }
            .nav-panel__item {
                padding: 8px 14px;
                font-size: 0.85rem;
                flex-shrink: 0;
                gap: 5px;
            }
            .nav-panel__item i {
                font-size: 0.8rem;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .articles-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .steps-list {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .page-banner {
                min-height: 240px;
            }
            .page-banner__title {
                font-size: 1.6rem;
            }
            .page-banner__desc {
                font-size: 0.95rem;
            }
            .page-banner__content {
                padding: 40px 0 30px;
            }
            .section {
                padding: var(--section-gap-sm) 0;
            }
            .section__title {
                font-size: 1.35rem;
            }
            .intro-card {
                padding: 22px;
            }
            .intro-card__text h3 {
                font-size: 1.25rem;
            }
            .cta-section {
                padding: 36px 24px;
                border-radius: var(--radius-xl);
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
            .footer__grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .article-card__body {
                padding: 16px 18px 18px;
            }
            .tip-card {
                padding: 20px;
                gap: 14px;
            }
            .step-item {
                padding: 20px 16px;
            }
            .pagination__btn {
                width: 36px;
                height: 36px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .page-banner__title {
                font-size: 1.4rem;
            }
            .section__title {
                font-size: 1.2rem;
            }
            .articles-grid {
                gap: 14px;
            }
            .steps-list {
                grid-template-columns: 1fr;
                gap: 10px;
            }
            .intro-card__features li {
                font-size: 0.875rem;
            }
            .cta-section h2 {
                font-size: 1.2rem;
            }
            .cta-section__btn {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .article-card__title {
                font-size: 1rem;
            }
        }

        /* 可访问性：focus 轮廓 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

/* roulang page: article */
:root {
            --c-primary: #6C3CE1;
            --c-primary-deep: #4A1FB8;
            --c-primary-light: #8B6BEE;
            --c-primary-bg: #F5F0FE;
            --c-accent: #FF6B35;
            --c-accent-hover: #E85A28;
            --c-accent-light: #FFF0EA;
            --c-dark: #0F0E1A;
            --c-dark-card: #1A1930;
            --c-text: #2D2D3A;
            --c-text-weak: #6B6B7B;
            --c-text-muted: #9999A6;
            --c-bg: #F8F7FC;
            --c-white: #FFFFFF;
            --c-border: #E8E8EF;
            --c-border-light: #F0F0F5;
            --c-success: #10B981;
            --c-warning: #F59E0B;
            --c-shadow-sm: 0 1px 3px rgba(15,14,26,0.06);
            --c-shadow: 0 4px 16px rgba(15,14,26,0.08);
            --c-shadow-md: 0 8px 28px rgba(15,14,26,0.10);
            --c-shadow-lg: 0 16px 48px rgba(15,14,26,0.14);
            --c-shadow-xl: 0 24px 64px rgba(15,14,26,0.18);
            --c-radius-sm: 8px;
            --c-radius: 12px;
            --c-radius-md: 16px;
            --c-radius-lg: 20px;
            --c-radius-xl: 28px;
            --c-transition: 0.22s cubic-bezier(0.4,0,0.2,1);
            --c-font-stack: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
            --container-max: 1200px;
            --container-narrow: 860px;
            --nav-height: 72px;
        }

        *,*::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(--c-font-stack);font-size:16px;line-height:1.7;color:var(--c-text);background:var(--c-bg);min-height:100vh}
        img{max-width:100%;height:auto;display:block}
        a{color:inherit;text-decoration:none;transition:color var(--c-transition)}
        a:hover{color:var(--c-primary)}
        button,input,select,textarea{font-family:inherit;font-size:inherit}
        h1,h2,h3,h4,h5,h6{line-height:1.3;color:var(--c-dark);font-weight:700}
        h1{font-size:2.25rem;letter-spacing:-0.02em}
        h2{font-size:1.75rem;letter-spacing:-0.01em}
        h3{font-size:1.35rem}
        @media(max-width:768px){h1{font-size:1.65rem}h2{font-size:1.35rem}h3{font-size:1.15rem}}

        .container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 24px}
        .container--narrow{max-width:var(--container-narrow)}
        @media(max-width:768px){.container{padding:0 16px}}

        /* 顶部导航栏 */
        .site-header{position:sticky;top:0;z-index:1000;background:var(--c-white);border-bottom:1px solid var(--c-border);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);background:rgba(255,255,255,0.94)}
        .site-header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-height);gap:20px}
        .site-header__logo{font-size:1.25rem;font-weight:800;color:var(--c-dark);letter-spacing:-0.02em;white-space:nowrap;display:flex;align-items:center;gap:8px;flex-shrink:0}
        .site-header__logo .logo-icon{width:38px;height:38px;border-radius:var(--c-radius-sm);background:linear-gradient(135deg,var(--c-primary),var(--c-primary-light));display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px}
        .nav-panel{display:flex;align-items:center;gap:6px;background:var(--c-bg);border-radius:var(--c-radius-lg);padding:6px;border:1px solid var(--c-border)}
        .nav-panel__item{display:flex;align-items:center;gap:7px;padding:10px 18px;border-radius:var(--c-radius);font-size:0.93rem;font-weight:600;color:var(--c-text-weak);transition:all var(--c-transition);white-space:nowrap;position:relative}
        .nav-panel__item i{font-size:0.9rem;opacity:0.7;transition:opacity var(--c-transition)}
        .nav-panel__item:hover{color:var(--c-primary);background:var(--c-primary-bg)}
        .nav-panel__item:hover i{opacity:1}
        .nav-panel__item--active{color:var(--c-white);background:var(--c-primary);box-shadow:0 2px 8px rgba(108,60,225,0.3)}
        .nav-panel__item--active i{opacity:1;color:var(--c-white)}
        .nav-panel__item--active:hover{color:var(--c-white);background:var(--c-primary-deep)}
        .header-cta{flex-shrink:0}
        .btn{display:inline-flex;align-items:center;gap:6px;padding:12px 24px;border-radius:var(--c-radius);font-weight:600;font-size:0.93rem;cursor:pointer;transition:all var(--c-transition);border:none;text-align:center;justify-content:center;white-space:nowrap}
        .btn--primary{background:var(--c-accent);color:#fff;box-shadow:0 2px 8px rgba(255,107,53,0.28)}
        .btn--primary:hover{background:var(--c-accent-hover);box-shadow:0 6px 20px rgba(255,107,53,0.36);transform:translateY(-1px);color:#fff}
        .btn--outline{background:transparent;border:2px solid var(--c-primary);color:var(--c-primary)}
        .btn--outline:hover{background:var(--c-primary);color:#fff}
        .btn--sm{padding:8px 16px;font-size:0.85rem;border-radius:var(--c-radius-sm)}
        .mobile-menu-toggle{display:none;background:none;border:none;font-size:1.5rem;color:var(--c-dark);cursor:pointer;padding:6px}
        @media(max-width:768px){
            .mobile-menu-toggle{display:block}
            .nav-panel{display:none;position:absolute;top:var(--nav-height);left:0;right:0;flex-direction:column;background:var(--c-white);border-radius:0;border:none;border-bottom:2px solid var(--c-border);padding:12px 24px 20px;box-shadow:var(--c-shadow-lg);gap:4px}
            .nav-panel--open{display:flex}
            .header-cta{display:none}
            .site-header__inner{gap:12px}
        }
        @media(max-width:520px){
            .site-header__logo{font-size:1rem}
            .site-header__logo .logo-icon{width:32px;height:32px;font-size:15px}
            .nav-panel{padding:10px 16px 16px}
        }

        /* 内页 Banner */
        .page-banner{position:relative;background:linear-gradient(155deg,var(--c-dark-card) 0%,var(--c-dark) 60%);padding:60px 0;overflow:hidden;min-height:220px;display:flex;align-items:center}
        .page-banner__bg{position:absolute;inset:0;opacity:0.18;background-image:url('/assets/images/backpic/back-2.png');background-size:cover;background-position:center;background-repeat:no-repeat;pointer-events:none}
        .page-banner__overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(108,60,225,0.15) 0%,rgba(15,14,26,0.55) 100%);pointer-events:none}
        .page-banner__content{position:relative;z-index:2;max-width:var(--container-narrow);margin:0 auto;text-align:center;padding:0 24px}
        .page-banner__label{display:inline-block;padding:5px 14px;border-radius:20px;background:rgba(255,255,255,0.12);color:rgba(255,255,255,0.85);font-size:0.82rem;font-weight:500;margin-bottom:12px;backdrop-filter:blur(4px)}
        .page-banner__title{color:#fff;font-size:2rem;font-weight:800;letter-spacing:-0.02em;margin-bottom:8px}
        .page-banner__meta{color:rgba(255,255,255,0.7);font-size:0.9rem;display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap}
        .page-banner__meta span{display:flex;align-items:center;gap:5px}
        @media(max-width:768px){
            .page-banner{padding:40px 0;min-height:180px}
            .page-banner__title{font-size:1.4rem}
            .page-banner__meta{font-size:0.82rem;gap:10px}
        }

        /* 面包屑 */
        .breadcrumb{max-width:var(--container-max);margin:0 auto;padding:16px 24px 0;display:flex;align-items:center;gap:8px;font-size:0.88rem;color:var(--c-text-muted);flex-wrap:wrap}
        .breadcrumb a{color:var(--c-primary);font-weight:500}
        .breadcrumb a:hover{color:var(--c-primary-deep);text-decoration:underline}
        .breadcrumb .sep{color:var(--c-border);user-select:none}
        .breadcrumb .current{color:var(--c-text-weak);font-weight:500}
        @media(max-width:768px){.breadcrumb{padding:12px 16px 0;font-size:0.8rem}}

        /* 文章内容主体 */
        .article-layout{display:grid;grid-template-columns:1fr 340px;gap:40px;align-items:start;max-width:var(--container-max);margin:0 auto;padding:32px 24px 40px}
        .article-main{min-width:0}
        .article-sidebar{position:sticky;top:calc(var(--nav-height) + 32px);display:flex;flex-direction:column;gap:24px}
        @media(max-width:1024px){
            .article-layout{grid-template-columns:1fr;gap:32px}
            .article-sidebar{position:static;display:grid;grid-template-columns:1fr 1fr;gap:20px}
        }
        @media(max-width:768px){
            .article-layout{padding:20px 16px 32px;gap:24px}
            .article-sidebar{grid-template-columns:1fr}
        }

        /* 文章正文卡片 */
        .article-card{background:var(--c-white);border-radius:var(--c-radius-lg);padding:40px;box-shadow:var(--c-shadow);border:1px solid var(--c-border-light)}
        .article-card__cover{margin:-40px -40px 32px;border-radius:var(--c-radius-lg) var(--c-radius-lg) 0 0;overflow:hidden;max-height:420px}
        .article-card__cover img{width:100%;height:100%;object-fit:cover;display:block}
        .article-card__body{line-height:1.85;font-size:1.05rem;color:var(--c-text)}
        .article-card__body h2{font-size:1.55rem;margin:36px 0 16px;padding-top:8px;color:var(--c-dark)}
        .article-card__body h3{font-size:1.25rem;margin:28px 0 12px;color:var(--c-dark)}
        .article-card__body p{margin-bottom:18px}
        .article-card__body ul,.article-card__body ol{margin:12px 0 18px 24px}
        .article-card__body li{margin-bottom:8px}
        .article-card__body blockquote{margin:24px 0;padding:18px 24px;background:var(--c-primary-bg);border-left:4px solid var(--c-primary);border-radius:0 var(--c-radius-sm) var(--c-radius-sm) 0;color:var(--c-text-weak);font-style:italic}
        .article-card__body strong{color:var(--c-dark);font-weight:700}
        .article-card__body a{color:var(--c-primary);font-weight:500;text-decoration:underline;text-underline-offset:3px}
        .article-card__body a:hover{color:var(--c-primary-deep)}
        .article-card__body img{border-radius:var(--c-radius);margin:20px 0}
        .article-card__tags{margin-top:32px;padding-top:20px;border-top:1px solid var(--c-border-light);display:flex;align-items:center;gap:10px;flex-wrap:wrap}
        .article-card__tags-label{font-weight:600;font-size:0.9rem;color:var(--c-text-weak)}
        .tag{display:inline-block;padding:5px 14px;border-radius:20px;background:var(--c-primary-bg);color:var(--c-primary);font-size:0.84rem;font-weight:500;transition:all var(--c-transition)}
        .tag:hover{background:var(--c-primary);color:#fff}
        @media(max-width:768px){
            .article-card{padding:24px 20px}
            .article-card__cover{margin:-24px -20px 24px;border-radius:var(--c-radius) var(--c-radius) 0 0;max-height:260px}
            .article-card__body{font-size:1rem}
            .article-card__body h2{font-size:1.3rem;margin:24px 0 12px}
            .article-card__body h3{font-size:1.1rem;margin:20px 0 10px}
        }

        /* 侧边栏卡片 */
        .sidebar-card{background:var(--c-white);border-radius:var(--c-radius-lg);padding:24px;box-shadow:var(--c-shadow-sm);border:1px solid var(--c-border-light)}
        .sidebar-card__title{font-size:1rem;font-weight:700;color:var(--c-dark);margin-bottom:16px;display:flex;align-items:center;gap:8px}
        .sidebar-card__title i{color:var(--c-primary);font-size:0.95rem}
        .sidebar-post-list{list-style:none;display:flex;flex-direction:column;gap:12px}
        .sidebar-post-list li{padding-bottom:12px;border-bottom:1px solid var(--c-border-light)}
        .sidebar-post-list li:last-child{border-bottom:none;padding-bottom:0}
        .sidebar-post-list a{display:block;font-weight:500;font-size:0.9rem;color:var(--c-text);line-height:1.45;transition:color var(--c-transition)}
        .sidebar-post-list a:hover{color:var(--c-primary)}
        .sidebar-post-list .post-date{font-size:0.78rem;color:var(--c-text-muted);margin-top:3px}
        .sidebar-cta-card{background:linear-gradient(145deg,var(--c-primary),var(--c-primary-deep));border-radius:var(--c-radius-lg);padding:28px 24px;color:#fff;text-align:center;box-shadow:var(--c-shadow-md)}
        .sidebar-cta-card__icon{font-size:2.4rem;margin-bottom:12px}
        .sidebar-cta-card__title{font-size:1.1rem;font-weight:700;margin-bottom:8px;color:#fff}
        .sidebar-cta-card__desc{font-size:0.88rem;opacity:0.9;margin-bottom:18px;line-height:1.5}
        .sidebar-cta-card .btn{background:#fff;color:var(--c-primary);box-shadow:0 4px 12px rgba(0,0,0,0.18)}
        .sidebar-cta-card .btn:hover{background:#f0eaff;color:var(--c-primary-deep);transform:translateY(-2px)}

        /* 相关推荐区 */
        .related-section{padding:48px 0 56px;background:var(--c-white);border-top:1px solid var(--c-border-light)}
        .related-section__title{text-align:center;font-size:1.5rem;font-weight:800;color:var(--c-dark);margin-bottom:32px}
        .related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;max-width:var(--container-max);margin:0 auto;padding:0 24px}
        .related-card{background:var(--c-bg);border-radius:var(--c-radius-lg);overflow:hidden;transition:all var(--c-transition);border:1px solid transparent}
        .related-card:hover{border-color:var(--c-border);box-shadow:var(--c-shadow-md);transform:translateY(-3px)}
        .related-card__img{height:180px;overflow:hidden;background:var(--c-border-light)}
        .related-card__img img{width:100%;height:100%;object-fit:cover;transition:transform 0.4s ease}
        .related-card:hover .related-card__img img{transform:scale(1.04)}
        .related-card__body{padding:18px 20px 20px}
        .related-card__tag{font-size:0.78rem;color:var(--c-primary);font-weight:600;margin-bottom:6px}
        .related-card__title{font-size:0.98rem;font-weight:700;color:var(--c-dark);line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
        .related-card__title a{color:inherit}
        .related-card__title a:hover{color:var(--c-primary)}
        .related-card__date{font-size:0.8rem;color:var(--c-text-muted);margin-top:8px}
        @media(max-width:1024px){.related-grid{grid-template-columns:repeat(2,1fr)}}
        @media(max-width:520px){.related-grid{grid-template-columns:1fr}.related-card__img{height:160px}}

        /* 文章底部CTA */
        .article-cta{background:linear-gradient(155deg,var(--c-dark-card) 0%,#141330 100%);padding:52px 0;text-align:center;position:relative;overflow:hidden}
        .article-cta__bg{position:absolute;inset:0;opacity:0.12;background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;pointer-events:none}
        .article-cta__content{position:relative;z-index:2;max-width:620px;margin:0 auto;padding:0 24px}
        .article-cta__title{font-size:1.6rem;font-weight:800;color:#fff;margin-bottom:10px}
        .article-cta__desc{color:rgba(255,255,255,0.78);font-size:0.98rem;margin-bottom:24px;line-height:1.6}
        .article-cta .btn--primary{padding:14px 32px;font-size:1rem;border-radius:var(--c-radius)}
        @media(max-width:768px){.article-cta{padding:36px 0}.article-cta__title{font-size:1.3rem}}

        /* 页脚 */
        .footer{background:var(--c-dark);color:rgba(255,255,255,0.7);padding:48px 0 28px;font-size:0.9rem}
        .footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:40px;max-width:var(--container-max);margin:0 auto;padding:0 24px}
        .footer__brand{font-size:1.2rem;font-weight:800;color:#fff;margin-bottom:10px}
        .footer__brand-desc{line-height:1.6;font-size:0.88rem;max-width:320px}
        .footer__col-title{font-weight:700;color:#fff;font-size:0.95rem;margin-bottom:14px}
        .footer__links{display:flex;flex-direction:column;gap:9px}
        .footer__links a{color:rgba(255,255,255,0.65);font-size:0.88rem;transition:color var(--c-transition)}
        .footer__links a:hover{color:var(--c-primary-light)}
        .footer__bottom{margin-top:36px;padding-top:20px;border-top:1px solid rgba(255,255,255,0.1);text-align:center;font-size:0.82rem;color:rgba(255,255,255,0.45);max-width:var(--container-max);margin-left:auto;margin-right:auto;padding-left:24px;padding-right:24px}
        @media(max-width:768px){.footer__grid{grid-template-columns:1fr;gap:28px}.footer__brand-desc{max-width:100%}}
        @media(max-width:520px){.footer{padding:36px 0 20px}}

        /* 文章未找到状态 */
        .not-found-block{text-align:center;padding:60px 24px;max-width:500px;margin:0 auto}
        .not-found-block__icon{font-size:4rem;color:var(--c-text-muted);margin-bottom:16px}
        .not-found-block__title{font-size:1.5rem;font-weight:700;color:var(--c-dark);margin-bottom:8px}
        .not-found-block__desc{color:var(--c-text-weak);margin-bottom:24px;line-height:1.6}
        .not-found-block .btn{padding:12px 28px}

        /* 工具类 */
        .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}
        @media(max-width:768px){.hide-mobile{display:none!important}}