/* roulang page: index */
:root {
            --color-primary: #1a3c5e;
            --color-primary-light: #1e4d7a;
            --color-primary-dark: #0f2940;
            --color-accent: #e8a817;
            --color-accent-light: #f5c34b;
            --color-accent-dark: #c48c0d;
            --color-surface: #ffffff;
            --color-bg: #f4f6f9;
            --color-bg-alt: #eef1f6;
            --color-bg-dark: #0f2940;
            --color-text: #1a1a2e;
            --color-text-secondary: #5a6b7f;
            --color-text-light: #8b9aaf;
            --color-text-on-dark: #e8ecf2;
            --color-border: #dce3ed;
            --color-border-light: #eaf0f7;
            --color-success: #10b981;
            --color-danger: #ef4444;
            --color-info: #3b82f6;
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50px;
            --shadow-xs: 0 1px 2px rgba(15, 41, 64, 0.04);
            --shadow-sm: 0 2px 8px rgba(15, 41, 64, 0.06);
            --shadow: 0 4px 16px rgba(15, 41, 64, 0.08);
            --shadow-lg: 0 8px 32px rgba(15, 41, 64, 0.12);
            --shadow-xl: 0 16px 48px rgba(15, 41, 64, 0.16);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
            --font-mono: "SF Mono", "Fira Code", "Consolas", monospace;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --max-width: 1200px;
            --header-height: 68px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--color-text);
            background: var(--color-bg);
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
            transition: all var(--transition);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--color-accent);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        ul,
        ol {
            list-style: none;
        }

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

        .container--narrow {
            max-width: 900px;
        }

        /* ===== HEADER ===== */
        .site-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);
            height: var(--header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: var(--shadow);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
            gap: 20px;
        }

        .header-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        /* Nav - 分段标签导航 */
        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--color-bg-alt);
            border-radius: var(--radius-full);
            padding: 4px;
        }
        .header-nav a {
            display: inline-flex;
            align-items: center;
            padding: 8px 20px;
            border-radius: var(--radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--color-text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }
        .header-nav a:hover {
            color: var(--color-primary);
            background: rgba(26, 60, 94, 0.06);
        }
        .header-nav a.active {
            background: var(--color-primary);
            color: #fff;
            font-weight: 600;
            box-shadow: var(--shadow-sm);
        }
        .header-nav a.active:hover {
            background: var(--color-primary-light);
            color: #fff;
        }

        .header-cta {
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 0.925rem;
            font-weight: 600;
            border-radius: var(--radius-full);
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            line-height: 1.4;
        }
        .btn--primary {
            background: var(--color-accent);
            color: #1a1a2e;
            box-shadow: var(--shadow-sm);
        }
        .btn--primary:hover {
            background: var(--color-accent-light);
            box-shadow: var(--shadow);
            transform: translateY(-1px);
        }
        .btn--primary:active {
            transform: translateY(0);
            box-shadow: var(--shadow-xs);
        }
        .btn--outline {
            background: transparent;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn--outline:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .btn--lg {
            padding: 13px 30px;
            font-size: 1rem;
            border-radius: var(--radius-full);
        }
        .btn--white {
            background: #fff;
            color: var(--color-primary);
            box-shadow: var(--shadow);
        }
        .btn--white:hover {
            background: #f0f4f8;
            box-shadow: var(--shadow-lg);
            transform: translateY(-2px);
        }

        /* 移动端汉堡菜单 */
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 6px;
            cursor: pointer;
            z-index: 1001;
            border-radius: var(--radius-sm);
        }
        .mobile-toggle span {
            display: block;
            width: 24px;
            height: 2.5px;
            background: var(--color-primary);
            border-radius: 3px;
            transition: all var(--transition);
        }
        .mobile-toggle.active span:nth-child(1) {
            transform: translateY(8.5px) rotate(45deg);
        }
        .mobile-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .mobile-toggle.active span:nth-child(3) {
            transform: translateY(-8.5px) rotate(-45deg);
        }

        /* ===== HERO ===== */
        .hero {
            position: relative;
            padding: 80px 0 90px;
            background: linear-gradient(160deg, #0f2940 0%, #1a3c5e 40%, #1e4d7a 100%);
            overflow: hidden;
            min-height: 520px;
            display: flex;
            align-items: center;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.png') center / cover no-repeat;
            opacity: 0.18;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--color-bg), transparent);
            pointer-events: none;
        }
        .hero-particles {
            position: absolute;
            inset: 0;
            pointer-events: none;
            overflow: hidden;
        }
        .hero-particles .particle {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            animation: floatUp 8s infinite ease-in;
        }
        .hero-particles .particle:nth-child(1) {
            width: 6px;
            height: 6px;
            left: 10%;
            bottom: 10%;
            animation-delay: 0s;
            animation-duration: 7s;
        }
        .hero-particles .particle:nth-child(2) {
            width: 4px;
            height: 4px;
            left: 25%;
            bottom: 30%;
            animation-delay: 1.5s;
            animation-duration: 9s;
        }
        .hero-particles .particle:nth-child(3) {
            width: 8px;
            height: 8px;
            left: 50%;
            bottom: 15%;
            animation-delay: 3s;
            animation-duration: 6.5s;
        }
        .hero-particles .particle:nth-child(4) {
            width: 5px;
            height: 5px;
            left: 70%;
            bottom: 25%;
            animation-delay: 4.5s;
            animation-duration: 8.5s;
        }
        .hero-particles .particle:nth-child(5) {
            width: 7px;
            height: 7px;
            left: 85%;
            bottom: 40%;
            animation-delay: 2s;
            animation-duration: 7.5s;
        }
        .hero-particles .particle:nth-child(6) {
            width: 3px;
            height: 3px;
            left: 38%;
            bottom: 50%;
            animation-delay: 5s;
            animation-duration: 10s;
        }
        @keyframes floatUp {
            0% {
                transform: translateY(0) scale(1);
                opacity: 0.6;
            }
            50% {
                opacity: 0.2;
            }
            100% {
                transform: translateY(-420px) scale(0.3);
                opacity: 0;
            }
        }
        .hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-content {
            max-width: 650px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-full);
            padding: 7px 16px;
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--color-accent-light);
            margin-bottom: 20px;
            backdrop-filter: blur(4px);
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            animation: pulseDot 2s infinite;
        }
        @keyframes pulseDot {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(232, 168, 23, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(232, 168, 23, 0);
            }
        }
        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            letter-spacing: -0.02em;
            line-height: 1.2;
            margin-bottom: 16px;
        }
        .hero-title .highlight {
            color: var(--color-accent);
            position: relative;
        }
        .hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            line-height: 1.7;
            margin-bottom: 30px;
            max-width: 500px;
        }
        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* 统计数据条 */
        .hero-stats {
            display: flex;
            gap: 30px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat .stat-number {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        /* ===== 板块通用 ===== */
        .section {
            padding: 70px 0;
        }
        .section--alt {
            background: var(--color-bg-alt);
        }
        .section--dark {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
        }
        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--color-accent);
            margin-bottom: 8px;
        }
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text);
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .section--dark .section-title {
            color: #fff;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-secondary);
            max-width: 550px;
            margin: 0 auto;
        }
        .section--dark .section-subtitle {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ===== 卡片网格 ===== */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .card-grid--2col {
            grid-template-columns: repeat(2, 1fr);
        }
        .card-grid--4col {
            grid-template-columns: repeat(4, 1fr);
        }

        /* ===== 卡片 ===== */
        .card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card__icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 16px;
            flex-shrink: 0;
        }
        .card__icon--blue {
            background: #e8f0fa;
            color: #1e4d7a;
        }
        .card__icon--gold {
            background: #fef8e8;
            color: #c48c0d;
        }
        .card__icon--green {
            background: #e6f7ee;
            color: #0d9448;
        }
        .card__icon--purple {
            background: #f0eafa;
            color: #6b3faa;
        }
        .card__title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .card__desc {
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.65;
            flex-grow: 1;
        }
        .card__link {
            margin-top: 14px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap var(--transition-fast);
        }
        .card__link:hover {
            gap: 10px;
            color: var(--color-primary-light);
        }
        .card__link::after {
            content: '→';
            font-size: 1rem;
            transition: transform var(--transition-fast);
        }
        .card__link:hover::after {
            transform: translateX(3px);
        }

        /* 图片卡片 */
        .card--image {
            padding: 0;
            overflow: hidden;
        }
        .card--image img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .card--image:hover img {
            transform: scale(1.05);
        }
        .card--image .card__body {
            padding: 20px 22px 22px;
        }
        .card__tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: var(--radius-full);
            background: #e8f0fa;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        /* ===== 列表项 ===== */
        .info-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .info-list__item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 20px;
            border-radius: var(--radius);
            transition: all var(--transition-fast);
            border-bottom: 1px solid var(--color-border-light);
        }
        .info-list__item:last-child {
            border-bottom: none;
        }
        .info-list__item:hover {
            background: var(--color-bg-alt);
        }
        .info-list__item .item-index {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--color-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            flex-shrink: 0;
        }
        .info-list__item:nth-child(1) .item-index,
        .info-list__item:nth-child(2) .item-index,
        .info-list__item:nth-child(3) .item-index {
            background: #fef8e8;
            color: #c48c0d;
        }
        .info-list__item .item-content {
            flex: 1;
            min-width: 0;
        }
        .info-list__item .item-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--color-text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .info-list__item .item-meta {
            font-size: 0.8rem;
            color: var(--color-text-light);
            margin-top: 2px;
        }
        .info-list__item .item-arrow {
            flex-shrink: 0;
            color: var(--color-text-light);
            font-size: 0.9rem;
            transition: transform var(--transition-fast);
        }
        .info-list__item:hover .item-arrow {
            transform: translateX(4px);
            color: var(--color-accent);
        }
        .info-list-empty {
            text-align: center;
            padding: 40px 20px;
            color: var(--color-text-secondary);
            font-size: 0.95rem;
        }

        /* ===== 统计数字区 ===== */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-card {
            background: var(--color-surface);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-2px);
        }
        .stat-card__number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            font-family: var(--font-mono);
        }
        .stat-card__number .plus {
            color: var(--color-accent);
        }
        .stat-card__label {
            font-size: 0.9rem;
            color: var(--color-text-secondary);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ===== 流程区 ===== */
        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-card {
            text-align: center;
            position: relative;
            padding: 24px 16px;
        }
        .step-card__circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            font-weight: 700;
            margin: 0 auto 16px;
            position: relative;
            z-index: 2;
            box-shadow: var(--shadow);
        }
        .step-card__title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text);
            margin-bottom: 4px;
        }
        .step-card__desc {
            font-size: 0.85rem;
            color: var(--color-text-secondary);
            line-height: 1.5;
        }
        .steps-connector {
            display: none;
        }
        @media (min-width: 769px) {
            .steps {
                position: relative;
            }
            .steps::before {
                content: '';
                position: absolute;
                top: 52px;
                left: 12.5%;
                right: 12.5%;
                height: 3px;
                background: var(--color-border);
                border-radius: 3px;
                z-index: 1;
            }
        }

        /* ===== FAQ ===== */
        .faq-list {
            max-width: 750px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .faq-item {
            background: var(--color-surface);
            border-radius: var(--radius);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--color-border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            background: none;
            font-size: 1rem;
            font-weight: 600;
            color: var(--color-text);
            text-align: left;
            gap: 12px;
        }
        .faq-question .faq-arrow {
            flex-shrink: 0;
            font-size: 0.8rem;
            color: var(--color-text-light);
            transition: transform var(--transition);
        }
        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition);
            padding: 0 22px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        .faq-answer p {
            font-size: 0.925rem;
            color: var(--color-text-secondary);
            line-height: 1.7;
        }

        /* ===== CTA ===== */
        .cta-section {
            text-align: center;
            padding: 60px 24px;
            background: linear-gradient(135deg, #1a3c5e 0%, #1e4d7a 50%, #0f2940 100%);
            border-radius: var(--radius-xl);
            position: relative;
            overflow: hidden;
            margin: 0 24px;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
            opacity: 0.12;
            mix-blend-mode: overlay;
            pointer-events: none;
        }
        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin: 0 auto;
        }
        .cta-title {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .cta-desc {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 26px;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: var(--color-bg-dark);
            color: var(--color-text-on-dark);
            padding: 50px 0 30px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 1.25rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-brand-desc {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.6;
            max-width: 260px;
        }
        .footer-col-title {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 14px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-links a {
            font-size: 0.9rem;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: var(--color-accent-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .card-grid--4col {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps::before {
                display: none;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 2px;
                padding: 12px 16px;
                border-radius: 0;
                box-shadow: var(--shadow-lg);
                transform: translateY(-120%);
                opacity: 0;
                transition: all var(--transition);
                z-index: 999;
            }
            .header-nav.open {
                transform: translateY(0);
                opacity: 1;
            }
            .header-nav a {
                border-radius: var(--radius);
                padding: 12px 16px;
                width: 100%;
            }
            .mobile-toggle {
                display: flex;
            }
            .header-cta {
                display: none;
            }
            .header-cta-mobile {
                display: block;
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .hero {
                padding: 50px 0 60px;
                min-height: auto;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .hero-stat .stat-number {
                font-size: 1.4rem;
            }
            .card-grid,
            .card-grid--2col,
            .card-grid--4col {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
            }
            .stat-card__number {
                font-size: 1.8rem;
            }
            .steps {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .section {
                padding: 48px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .cta-section {
                margin: 0 16px;
                border-radius: var(--radius-lg);
                padding: 40px 20px;
            }
            .cta-title {
                font-size: 1.4rem;
            }
            .container {
                padding: 0 16px;
            }
            .header-inner {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.5rem;
            }
            .hero-actions {
                flex-direction: column;
                gap: 10px;
            }
            .hero-actions .btn {
                width: 100%;
                text-align: center;
            }
            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-card {
                padding: 18px 12px;
            }
            .stat-card__number {
                font-size: 1.5rem;
            }
            .card--image img {
                height: 160px;
            }
            .btn--lg {
                padding: 11px 22px;
                font-size: 0.9rem;
            }
        }

        /* 工具类 */
        .text-center {
            text-align: center;
        }
        .mt-0 {
            margin-top: 0;
        }
        .mt-2 {
            margin-top: 8px;
        }
        .mt-4 {
            margin-top: 16px;
        }
        .mb-0 {
            margin-bottom: 0;
        }

/* roulang page: article */
:root {
            --primary: #c91b26;
            --primary-dark: #a0151e;
            --primary-light: #fde8ea;
            --accent: #d4a843;
            --accent-light: #fdf3dc;
            --bg: #fafafa;
            --bg-alt: #f4f4f6;
            --bg-dark: #1a1a2e;
            --surface: #ffffff;
            --text: #1a1a2e;
            --text-secondary: #5c5c70;
            --text-muted: #8e8ea0;
            --border: #e4e4ec;
            --border-light: #f0f0f5;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
            --shadow-md: 0 4px 16px rgba(0,0,0,0.08), 0 2px 6px rgba(0,0,0,0.04);
            --shadow-lg: 0 12px 40px rgba(0,0,0,0.10), 0 4px 12px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 60px rgba(0,0,0,0.14), 0 8px 20px rgba(0,0,0,0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            --max-width: 1200px;
            --content-width: 780px;
        }
        *,*::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:1.6;color:var(--text);background:var(--bg);min-height:100vh}
        a{text-decoration:none;color:inherit;transition:color var(--transition)}
        img{max-width:100%;height:auto;display:block}
        button,input{font:inherit;border:none;outline:none;background:none;cursor:pointer}
        ul,ol{list-style:none}
        h1,h2,h3,h4,h5,h6{line-height:1.3;font-weight:700;color:var(--text)}
        .container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}
        .content-container{width:100%;max-width:var(--content-width);margin:0 auto;padding:0 24px}

        /* Header */
        .site-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(--border);box-shadow:var(--shadow-sm);transition:box-shadow var(--transition)}
        .site-header.scrolled{box-shadow:var(--shadow-md)}
        .header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:20px}
        .header-logo{display:flex;align-items:center;gap:10px;font-size:1.3rem;font-weight:800;color:var(--primary);white-space:nowrap;letter-spacing:-0.01em;transition:opacity var(--transition)}
        .header-logo:hover{opacity:0.85}
        .header-logo .logo-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--primary),var(--primary-dark));display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.1rem;font-weight:900;flex-shrink:0}
        .header-nav{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
        .header-nav a{display:inline-flex;align-items:center;padding:8px 18px;border-radius:24px;font-size:0.95rem;font-weight:600;color:var(--text-secondary);transition:all var(--transition);white-space:nowrap;position:relative}
        .header-nav a:hover{color:var(--primary);background:var(--primary-light)}
        .header-nav a.active{color:#fff;background:var(--primary);box-shadow:0 2px 10px rgba(201,27,38,0.30)}
        .header-nav a.active:hover{background:var(--primary-dark);color:#fff}
        .header-actions{display:flex;align-items:center;gap:10px}
        .btn-header{padding:9px 20px;border-radius:24px;font-size:0.9rem;font-weight:700;background:var(--accent);color:#fff;transition:all var(--transition);white-space:nowrap;box-shadow:0 2px 8px rgba(212,168,67,0.30)}
        .btn-header:hover{background:#c49635;box-shadow:0 4px 14px rgba(212,168,67,0.40);transform:translateY(-1px)}
        .mobile-menu-btn{display:none;width:40px;height:40px;border-radius:var(--radius-sm);align-items:center;justify-content:center;font-size:1.3rem;color:var(--text);transition:background var(--transition)}
        .mobile-menu-btn:hover{background:var(--bg-alt)}

        /* Article Banner */
        .article-banner{position:relative;background:linear-gradient(160deg, #1a1a2e 0%, #2d1a1f 40%, #1a1a2e 100%);padding:56px 0 52px;overflow:hidden}
        .article-banner::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;opacity:0.12;mix-blend-mode:soft-light}
        .article-banner::after{content:'';position:absolute;bottom:0;left:0;right:0;height:60px;background:linear-gradient(to top,var(--bg),transparent)}
        .article-banner .container{position:relative;z-index:2}
        .breadcrumb{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:0.88rem;color:rgba(255,255,255,0.7);margin-bottom:20px}
        .breadcrumb a{color:rgba(255,255,255,0.8);transition:color var(--transition)}
        .breadcrumb a:hover{color:#fff}
        .breadcrumb .sep{width:4px;height:4px;border-radius:50%;background:rgba(255,255,255,0.4);flex-shrink:0}
        .breadcrumb .current{color:#fff;font-weight:600}
        .article-banner-meta{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:16px}
        .article-badge{display:inline-flex;align-items:center;padding:5px 14px;border-radius:20px;font-size:0.82rem;font-weight:700;background:rgba(255,255,255,0.15);color:#ffd700;backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,0.1)}
        .article-banner-date{font-size:0.88rem;color:rgba(255,255,255,0.65)}
        .article-banner-title{font-size:2rem;font-weight:800;color:#fff;line-height:1.35;letter-spacing:-0.01em;max-width:700px}

        /* Article Body Section */
        .article-body-section{padding:40px 0 60px}
        .article-card{background:var(--surface);border-radius:var(--radius-lg);padding:44px 48px;box-shadow:var(--shadow-md);border:1px solid var(--border-light)}
        .article-meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;padding-bottom:24px;margin-bottom:32px;border-bottom:1px solid var(--border-light)}
        .article-meta-item{display:flex;align-items:center;gap:6px;font-size:0.9rem;color:var(--text-muted)}
        .article-meta-item .meta-icon{width:18px;height:18px;display:inline-flex;align-items:center;justify-content:center;font-size:0.85rem}
        .article-content{font-size:1.05rem;line-height:1.85;color:var(--text);word-break:break-word}
        .article-content h2{font-size:1.5rem;margin:36px 0 16px;color:var(--text);padding-bottom:8px;border-bottom:2px solid var(--border-light)}
        .article-content h3{font-size:1.25rem;margin:28px 0 12px;color:var(--text)}
        .article-content p{margin-bottom:18px}
        .article-content ul,.article-content ol{margin:12px 0 18px 22px}
        .article-content li{margin-bottom:8px;position:relative}
        .article-content ul li::before{content:'';position:absolute;left:-18px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--primary)}
        .article-content ol{counter-reset:article-list}
        .article-content ol li{counter-increment:article-list}
        .article-content ol li::before{content:counter(article-list)'.';position:absolute;left:-22px;top:0;font-weight:700;color:var(--primary)}
        .article-content blockquote{margin:24px 0;padding:18px 24px;border-left:4px solid var(--accent);background:var(--accent-light);border-radius:0 var(--radius) var(--radius) 0;font-style:italic;color:var(--text-secondary)}
        .article-content img{border-radius:var(--radius);margin:20px 0}
        .article-content a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}
        .article-content a:hover{color:var(--primary-dark)}
        .article-content strong{font-weight:700;color:var(--text)}
        .article-content hr{margin:32px 0;border:none;height:1px;background:var(--border)}

        /* Not Found */
        .not-found-block{text-align:center;padding:60px 20px}
        .not-found-icon{font-size:4rem;margin-bottom:20px;display:block}
        .not-found-block h2{font-size:1.5rem;margin-bottom:12px;color:var(--text)}
        .not-found-block p{color:var(--text-muted);margin-bottom:24px;font-size:1rem}
        .btn-back{padding:12px 28px;border-radius:24px;font-weight:700;font-size:0.95rem;background:var(--primary);color:#fff;display:inline-flex;align-items:center;gap:8px;transition:all var(--transition);box-shadow:0 3px 12px rgba(201,27,38,0.25)}
        .btn-back:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(201,27,38,0.35)}

        /* Related Posts */
        .related-section{padding:0 0 70px}
        .section-header{margin-bottom:36px}
        .section-label{display:inline-flex;align-items:center;gap:8px;font-size:0.82rem;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:var(--primary);margin-bottom:10px}
        .section-label::before{content:'';width:20px;height:2px;background:var(--primary);border-radius:1px}
        .section-title{font-size:1.65rem;font-weight:800;color:var(--text);letter-spacing:-0.01em}
        .related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
        .related-card{background:var(--surface);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border-light);transition:all var(--transition);display:flex;flex-direction:column}
        .related-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);border-color:var(--border)}
        .related-card-img{width:100%;aspect-ratio:16/10;object-fit:cover;display:block;background:var(--bg-alt)}
        .related-card-body{padding:18px 20px 20px;flex:1;display:flex;flex-direction:column}
        .related-card-cat{font-size:0.75rem;font-weight:700;color:var(--accent);margin-bottom:8px;text-transform:uppercase;letter-spacing:0.04em}
        .related-card-title{font-size:1rem;font-weight:700;line-height:1.45;color:var(--text);margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color var(--transition)}
        .related-card:hover .related-card-title{color:var(--primary)}
        .related-card-date{font-size:0.8rem;color:var(--text-muted);margin-top:auto}

        /* CTA Section */
        .cta-section{padding:64px 0;background:var(--bg-dark);position:relative;overflow:hidden}
        .cta-section::before{content:'';position:absolute;inset:0;background:url('/assets/images/backpic/back-2.png') center/cover no-repeat;opacity:0.08;mix-blend-mode:soft-light}
        .cta-inner{position:relative;z-index:2;text-align:center;max-width:600px;margin:0 auto}
        .cta-heading{font-size:1.7rem;font-weight:800;color:#fff;margin-bottom:14px;letter-spacing:-0.01em}
        .cta-sub{font-size:1rem;color:rgba(255,255,255,0.7);margin-bottom:28px;line-height:1.6}
        .btn-cta{padding:14px 36px;border-radius:28px;font-weight:700;font-size:1rem;background:var(--accent);color:#fff;display:inline-flex;align-items:center;gap:8px;transition:all var(--transition);box-shadow:0 4px 18px rgba(212,168,67,0.35)}
        .btn-cta:hover{background:#c49635;transform:translateY(-2px);box-shadow:0 8px 28px rgba(212,168,67,0.45)}

        /* Footer */
        .site-footer{background:#14141f;color:rgba(255,255,255,0.7);padding:56px 0 28px;border-top:3px solid var(--primary)}
        .footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
        .footer-brand{font-size:1.25rem;font-weight:800;color:#fff;margin-bottom:10px;letter-spacing:-0.01em}
        .footer-brand-desc{font-size:0.88rem;line-height:1.6;color:rgba(255,255,255,0.5);max-width:280px}
        .footer-col-title{font-size:0.9rem;font-weight:700;color:#fff;margin-bottom:16px;letter-spacing:0.02em}
        .footer-links{display:flex;flex-direction:column;gap:9px}
        .footer-links a{font-size:0.88rem;color:rgba(255,255,255,0.55);transition:color var(--transition)}
        .footer-links a:hover{color:#fff}
        .footer-bottom{padding-top:24px;border-top:1px solid rgba(255,255,255,0.08);font-size:0.8rem;color:rgba(255,255,255,0.35);text-align:center}

        /* Responsive */
        @media (max-width:1024px){
            .related-grid{grid-template-columns:repeat(3,1fr)}
            .article-card{padding:32px 28px}
            .article-banner-title{font-size:1.65rem}
        }
        @media (max-width:768px){
            .header-inner{height:56px}
            .header-logo{font-size:1.1rem}
            .header-logo .logo-icon{width:30px;height:30px;font-size:0.9rem}
            .header-nav{gap:3px}
            .header-nav a{padding:7px 13px;font-size:0.85rem;border-radius:20px}
            .btn-header{padding:7px 15px;font-size:0.82rem}
            .article-banner{padding:40px 0 36px}
            .article-banner-title{font-size:1.4rem}
            .article-body-section{padding:28px 0 44px}
            .article-card{padding:24px 20px;border-radius:var(--radius)}
            .article-content{font-size:1rem;line-height:1.75}
            .article-content h2{font-size:1.3rem}
            .article-content h3{font-size:1.1rem}
            .related-grid{grid-template-columns:repeat(2,1fr);gap:14px}
            .related-card-body{padding:14px 16px 16px}
            .related-card-title{font-size:0.9rem}
            .section-title{font-size:1.35rem}
            .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
            .cta-heading{font-size:1.4rem}
        }
        @media (max-width:520px){
            .container{padding:0 16px}
            .content-container{padding:0 16px}
            .header-inner{height:52px;gap:10px}
            .header-logo{font-size:1rem}
            .header-logo .logo-icon{width:26px;height:26px;font-size:0.8rem}
            .header-nav a{padding:6px 10px;font-size:0.78rem;border-radius:16px}
            .btn-header{padding:6px 12px;font-size:0.75rem;border-radius:20px}
            .article-banner{padding:32px 0 28px}
            .article-banner-title{font-size:1.2rem}
            .breadcrumb{font-size:0.78rem;gap:5px}
            .article-badge{font-size:0.72rem;padding:4px 10px}
            .article-card{padding:18px 14px;border-radius:var(--radius-sm)}
            .article-meta-row{gap:10px;padding-bottom:16px;margin-bottom:20px}
            .article-content{font-size:0.95rem;line-height:1.7}
            .article-content h2{font-size:1.15rem;margin:24px 0 12px}
            .article-content h3{font-size:1rem;margin:20px 0 10px}
            .article-content blockquote{padding:14px 16px;margin:16px 0}
            .related-grid{grid-template-columns:1fr 1fr;gap:10px}
            .related-card-body{padding:10px 12px 12px}
            .related-card-title{font-size:0.82rem}
            .related-card-cat{font-size:0.7rem}
            .related-card-date{font-size:0.7rem}
            .section-title{font-size:1.2rem}
            .cta-section{padding:44px 0}
            .cta-heading{font-size:1.2rem}
            .cta-sub{font-size:0.9rem}
            .btn-cta{padding:12px 26px;font-size:0.9rem}
            .footer-grid{grid-template-columns:1fr;gap:22px}
            .footer-brand-desc{max-width:100%}
            .not-found-block{padding:40px 14px}
            .not-found-icon{font-size:3rem}
        }
        @media (max-width:380px){
            .header-nav{gap:2px}
            .header-nav a{padding:5px 9px;font-size:0.74rem}
            .btn-header{padding:5px 10px;font-size:0.7rem}
            .header-logo{font-size:0.9rem}
            .related-grid{grid-template-columns:1fr}
            .article-banner-title{font-size:1.05rem}
            .article-card{padding:14px 10px}
        }

/* roulang page: category1 */
:root {
            --primary: #1a56db;
            --primary-hover: #1648c0;
            --primary-light: #e8f0fe;
            --primary-dark: #0f2d6b;
            --accent: #f59e0b;
            --accent-hover: #d97706;
            --accent-light: #fef3c7;
            --bg: #f8fafc;
            --bg-white: #ffffff;
            --bg-dark: #0f172a;
            --bg-soft: #f1f5f9;
            --text: #1e293b;
            --text-secondary: #64748b;
            --text-muted: #94a3b8;
            --text-light: #cbd5e1;
            --border: #e2e8f0;
            --border-light: #f1f5f9;
            --radius-sm: 8px;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
            --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
            --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
            --shadow-lg: 0 10px 30px rgba(0,0,0,0.1), 0 4px 8px rgba(0,0,0,0.05);
            --shadow-xl: 0 20px 50px rgba(0,0,0,0.12);
            --transition: 0.2s ease;
            --transition-slow: 0.35s ease;
            --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --max-width: 1200px;
            --header-height: 68px;
        }

        *, *::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: 1.65;
            color: var(--text);
            background: var(--bg);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button, input, select {
            font-family: inherit;
            font-size: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
        }

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

        /* ========== Header ========== */
        .site-header {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            height: var(--header-height);
            display: flex;
            align-items: center;
            box-shadow: var(--shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            height: 100%;
        }

        .header-logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--primary-dark);
            white-space: nowrap;
            letter-spacing: -0.01em;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .header-logo .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--primary), #3b82f6);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(26,86,219,0.25);
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            background: var(--bg-soft);
            border-radius: 28px;
            padding: 4px;
        }

        .header-nav a {
            padding: 8px 20px;
            border-radius: 24px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition);
            white-space: nowrap;
            position: relative;
        }

        .header-nav a:hover {
            color: var(--text);
            background: rgba(255,255,255,0.6);
        }

        .header-nav a.active {
            background: var(--bg-white);
            color: var(--primary);
            font-weight: 600;
            box-shadow: var(--shadow);
        }

        .header-cta {
            flex-shrink: 0;
        }

        .btn-primary-sm {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 18px;
            background: var(--primary);
            color: #fff;
            border-radius: 24px;
            font-size: 0.875rem;
            font-weight: 600;
            transition: all var(--transition);
            white-space: nowrap;
            box-shadow: 0 2px 8px rgba(26,86,219,0.2);
        }

        .btn-primary-sm:hover {
            background: var(--primary-hover);
            box-shadow: 0 4px 16px rgba(26,86,219,0.3);
            transform: translateY(-1px);
        }

        /* ========== Category Banner ========== */
        .category-banner {
            background: linear-gradient(160deg, #0f2d6b 0%, #1a3f7a 30%, #1a56db 70%, #2563eb 100%);
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            padding: 48px 0;
            position: relative;
            color: #fff;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,23,42,0.55);
            pointer-events: none;
        }

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

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: rgba(255,255,255,0.75);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            color: rgba(255,255,255,0.5);
            font-size: 0.7rem;
        }

        .breadcrumb .current {
            color: #fff;
            font-weight: 500;
        }

        .category-banner h1 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            margin-bottom: 10px;
        }

        .category-banner .cat-desc {
            font-size: 1rem;
            color: rgba(255,255,255,0.85);
            max-width: 650px;
            line-height: 1.6;
        }

        /* ========== Stats Bar ========== */
        .stats-bar {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
            padding: 18px 0;
        }

        .stats-grid {
            display: flex;
            gap: 32px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .stat-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .stat-item .stat-icon {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-sm);
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }

        .stat-item strong {
            color: var(--primary-dark);
            font-size: 1.15rem;
            font-weight: 700;
            display: block;
            line-height: 1.2;
        }

        .stat-item span {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* ========== Main Content Area ========== */
        .main-content {
            padding: 40px 0 56px;
        }

        .content-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 32px;
            align-items: start;
        }

        /* ========== Filter Bar ========== */
        .filter-bar {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
            margin-bottom: 24px;
            padding-bottom: 16px;
            border-bottom: 1px solid var(--border-light);
        }

        .filter-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .filter-chips {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .filter-chip {
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-soft);
            border: 1px solid transparent;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

        .filter-chip:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        .filter-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-color: var(--primary);
        }

        .filter-sort {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 0.85rem;
            color: var(--text-secondary);
            cursor: pointer;
            padding: 6px 12px;
            border-radius: 20px;
            background: var(--bg-soft);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-sort:hover {
            background: var(--border);
        }

        /* ========== Article Cards ========== */
        .article-list {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

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

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

        .article-card .card-img-wrap {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: var(--bg-soft);
        }

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

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

        .article-card .card-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent);
            color: #fff;
            font-size: 0.72rem;
            font-weight: 600;
            padding: 4px 10px;
            border-radius: 14px;
            z-index: 2;
            letter-spacing: 0.02em;
        }

        .article-card .card-body {
            padding: 16px 18px 18px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card .card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text);
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .article-card:hover .card-title {
            color: var(--primary);
        }

        .article-card .card-excerpt {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
            margin-bottom: 12px;
        }

        .article-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.75rem;
            color: var(--text-muted);
            padding-top: 10px;
            border-top: 1px solid var(--border-light);
        }

        .article-card .card-meta .meta-date {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .article-card .card-meta .meta-views {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ========== Pagination ========== */
        .pagination-wrap {
            margin-top: 36px;
            display: flex;
            justify-content: center;
        }

        .pagination {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .pagination .page-btn {
            width: 38px;
            height: 38px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.875rem;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-white);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }

        .pagination .page-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        .pagination .page-btn.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            border-color: var(--primary);
            box-shadow: 0 2px 8px rgba(26,86,219,0.25);
        }

        .pagination .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        .pagination .page-dots {
            width: 38px;
            height: 38px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* ========== Sidebar ========== */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }

        .sidebar-card {
            background: var(--bg-white);
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
        }

        .sidebar-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 14px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h3::before {
            content: '';
            width: 4px;
            height: 18px;
            background: var(--primary);
            border-radius: 2px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud .tag {
            padding: 5px 12px;
            background: var(--bg-soft);
            border-radius: 16px;
            font-size: 0.78rem;
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
        }

        .tag-cloud .tag:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        .tag-cloud .tag.hot {
            background: #fef3c7;
            color: #b45309;
            font-weight: 500;
        }

        .sidebar-list-item {
            display: flex;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid var(--border-light);
            transition: all var(--transition);
        }

        .sidebar-list-item:last-child {
            border-bottom: none;
        }

        .sidebar-list-item:hover .sli-title {
            color: var(--primary);
        }

        .sidebar-list-item .sli-num {
            width: 26px;
            height: 26px;
            border-radius: 50%;
            background: var(--bg-soft);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .sidebar-list-item:nth-child(1) .sli-num,
        .sidebar-list-item:nth-child(2) .sli-num,
        .sidebar-list-item:nth-child(3) .sli-num {
            background: #fef3c7;
            color: #b45309;
        }

        .sidebar-list-item .sli-info {
            flex: 1;
            min-width: 0;
        }

        .sidebar-list-item .sli-title {
            font-size: 0.82rem;
            font-weight: 500;
            color: var(--text);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--transition);
        }

        .sidebar-list-item .sli-date {
            font-size: 0.7rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* ========== CTA Section ========== */
        .cta-section {
            background: linear-gradient(135deg, #0f2d6b 0%, #1a56db 100%);
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            background-blend-mode: soft-light;
            padding: 52px 0;
            position: relative;
            color: #fff;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15,35,70,0.6);
            pointer-events: none;
        }

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

        .cta-section h2 {
            font-size: 1.75rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            font-size: 0.95rem;
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-primary-lg {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            background: #fff;
            color: var(--primary-dark);
            border-radius: 28px;
            font-size: 1rem;
            font-weight: 700;
            transition: all var(--transition);
            box-shadow: 0 6px 20px rgba(0,0,0,0.2);
        }

        .btn-primary-lg:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 30px rgba(0,0,0,0.3);
            background: #f8fafc;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-light);
            padding: 48px 0 24px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand-desc {
            font-size: 0.85rem;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .footer-col-title {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

        .footer-links a {
            font-size: 0.82rem;
            color: var(--text-muted);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 18px;
            font-size: 0.78rem;
            color: var(--text-muted);
            text-align: center;
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .content-layout {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .sidebar {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }
            .sidebar-card {
                flex: 1;
                min-width: 260px;
            }
            .article-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                gap: 12px;
            }
            .header-logo {
                font-size: 1.05rem;
            }
            .header-logo .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .header-nav a {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .header-cta .btn-primary-sm {
                padding: 7px 14px;
                font-size: 0.78rem;
            }
            .category-banner {
                padding: 36px 0;
            }
            .category-banner h1 {
                font-size: 1.5rem;
            }
            .category-banner .cat-desc {
                font-size: 0.88rem;
            }
            .article-list {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .article-card .card-body {
                padding: 12px 14px 14px;
            }
            .article-card .card-title {
                font-size: 0.85rem;
            }
            .article-card .card-excerpt {
                font-size: 0.75rem;
                -webkit-line-clamp: 2;
            }
            .stats-grid {
                gap: 18px;
            }
            .stat-item {
                font-size: 0.8rem;
            }
            .stat-item strong {
                font-size: 1rem;
            }
            .filter-bar {
                gap: 8px;
            }
            .filter-sort {
                margin-left: 0;
            }
            .sidebar {
                flex-direction: column;
            }
            .sidebar-card {
                min-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cta-section h2 {
                font-size: 1.35rem;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 8px;
            }
            .header-logo {
                font-size: 0.9rem;
                gap: 5px;
            }
            .header-logo .logo-icon {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
                border-radius: 6px;
            }
            .header-nav {
                gap: 2px;
                padding: 3px;
                border-radius: 22px;
            }
            .header-nav a {
                padding: 5px 10px;
                font-size: 0.72rem;
                border-radius: 18px;
            }
            .header-cta .btn-primary-sm {
                padding: 5px 10px;
                font-size: 0.7rem;
                border-radius: 18px;
            }
            .category-banner {
                padding: 28px 0;
            }
            .category-banner h1 {
                font-size: 1.3rem;
            }
            .category-banner .cat-desc {
                font-size: 0.8rem;
            }
            .article-list {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .article-card .card-img-wrap {
                aspect-ratio: 16 / 9;
            }
            .stats-grid {
                gap: 12px;
                justify-content: flex-start;
            }
            .stat-item {
                gap: 6px;
            }
            .stat-item .stat-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .filter-chips {
                gap: 5px;
            }
            .filter-chip {
                padding: 5px 10px;
                font-size: 0.72rem;
            }
            .pagination .page-btn {
                width: 32px;
                height: 32px;
                font-size: 0.78rem;
            }
        }