/* roulang page: index */
:root {
    --primary: #1e4fd6;
    --primary-dark: #173ba8;
    --primary-light: #4f7df5;
    --accent: #f7852d;
    --accent-dark: #e06a12;
    --accent-light: #ffb37d;
    --bg-light: #f5f8fd;
    --bg-white: #ffffff;
    --bg-dark: #0f1e35;
    --text-main: #1e2a3d;
    --text-muted: #64748b;
    --border: #e3e9f2;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 12px rgba(30, 42, 61, 0.06);
    --shadow-md: 0 8px 32px rgba(30, 42, 61, 0.10);
    --shadow-lg: 0 18px 54px rgba(30, 42, 61, 0.14);
    --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-main);
    background: var(--bg-light);
    -webkit-font-smoothing: antialiased;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

button {
    font-family: inherit;
    border: none;
    cursor: pointer;
}

ul,
ol {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 96px 0;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.section-tag {
    display: inline-block;
    padding: 6px 18px;
    border-radius: 100px;
    background: rgba(30, 79, 214, 0.08);
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-main);
    margin-top: 14px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    margin-top: 12px;
    line-height: 1.75;
}

/* 按钮 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 24px rgba(30, 79, 214, 0.28);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(30, 79, 214, 0.36);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-outline {
    background: transparent;
    color: #fff;
    border-color: rgba(255, 255, 255, 0.65);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
    transform: translateY(-2px);
}

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

.btn-outline-light:hover {
    background: rgba(30, 79, 214, 0.06);
    border-color: var(--primary-dark);
    color: var(--primary-dark);
}

.btn-sm {
    padding: 9px 22px;
    font-size: 14px;
}

.btn:focus-visible,
a:focus-visible {
    outline: 3px solid rgba(30, 79, 214, 0.4);
    outline-offset: 2px;
}

/* 导航 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(227, 233, 242, 0.8);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    gap: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    font-weight: 800;
    box-shadow: 0 4px 14px rgba(30, 79, 214, 0.28);
}

.logo-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(30, 79, 214, 0.06);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(30, 79, 214, 0.10);
    font-weight: 600;
}

.nav-cta {
    flex-shrink: 0;
    white-space: nowrap;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--bg-light);
    padding: 0 10px;
    transition: var(--transition);
}

.nav-toggle span {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--text-main);
    border-radius: 4px;
    transition: var(--transition);
}

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

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

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

/* Hero */
.hero {
    position: relative;
    min-height: 680px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(15, 30, 53, 0.93), rgba(30, 79, 214, 0.82)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    color: #fff;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: -120px;
    right: -80px;
    width: 420px;
    height: 420px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
}

.hero::after {
    content: "";
    position: absolute;
    bottom: -160px;
    left: -60px;
    width: 360px;
    height: 360px;
    border-radius: 50%;
    background: rgba(247, 133, 45, 0.14);
}

.hero-inner {
    position: relative;
    z-index: 2;
    max-width: 680px;
    padding: 80px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    padding: 6px 18px;
    border-radius: 100px;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 24px;
    backdrop-filter: blur(8px);
}

.hero-badge i {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #34d399;
    display: inline-block;
}

.hero-title {
    font-size: 54px;
    line-height: 1.15;
    font-weight: 800;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 18px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.86);
    margin-bottom: 36px;
    max-width: 580px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

/* 关于 */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.about-media {
    position: relative;
}

.about-media img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
    object-fit: cover;
    aspect-ratio: 4 / 3;
}

.about-media::after {
    content: "";
    position: absolute;
    inset: 20px -20px -20px 20px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--primary);
    opacity: 0.18;
    z-index: -1;
}

.about-content .section-tag {
    margin-bottom: 16px;
}

.about-content h2 {
    font-size: 32px;
    line-height: 1.3;
    margin-bottom: 20px;
    color: var(--text-main);
}

.about-content > p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.85;
    margin-bottom: 28px;
}

.about-list {
    margin-bottom: 32px;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    font-size: 15px;
    color: var(--text-main);
    font-weight: 500;
}

.list-icon {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(30, 79, 214, 0.10);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

/* 分类 */
.categories {
    background: var(--bg-white);
}

.cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.category-card {
    display: block;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(30, 79, 214, 0.3);
}

.category-thumb {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.category-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    border-radius: 0;
}

.category-card:hover .category-thumb img {
    transform: scale(1.05);
}

.category-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    background: rgba(15, 30, 53, 0.72);
    color: #fff;
    font-size: 12px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 100px;
    backdrop-filter: blur(6px);
}

.category-body {
    padding: 24px 26px 28px;
}

.category-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
}

.category-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 18px;
}

.category-link {
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.category-card:hover .category-link {
    gap: 12px;
    color: var(--primary-dark);
}

/* 资讯列表 */
.news-section {
    background: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.news-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 26px 28px;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
}

.news-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
    border-color: rgba(30, 79, 214, 0.25);
}

.news-tags {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.tag {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(30, 79, 214, 0.08);
    color: var(--primary);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
}

.tag-hot {
    background: rgba(247, 133, 45, 0.12);
    color: var(--accent-dark);
}

.news-title {
    font-size: 18px;
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: 10px;
    color: var(--text-main);
}

.news-title a {
    transition: var(--transition);
}

.news-title a:hover {
    color: var(--primary);
}

.news-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 18px;
    flex: 1;
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

.news-date {
    font-size: 13px;
    color: var(--text-muted);
}

.news-more {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.news-more:hover {
    gap: 8px;
    color: var(--primary-dark);
}

.news-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 24px;
    background: var(--bg-white);
    border: 1px dashed var(--border);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 15px;
}

.section-more {
    text-align: center;
    margin-top: 44px;
}

/* 数据统计 */
.stats {
    background: linear-gradient(135deg, rgba(15, 30, 53, 0.94), rgba(30, 79, 214, 0.88)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    color: #fff;
    padding: 90px 0;
    position: relative;
    overflow: hidden;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.10);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(8px);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-4px);
}

.stat-number {
    font-size: 48px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #fff, rgba(255, 255, 255, 0.75));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 15px;
    opacity: 0.82;
    letter-spacing: 0.5px;
}

/* 流程 */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    counter-reset: step-counter;
}

.step-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    position: relative;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.step-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-6px);
}

.step-num {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 6px 20px rgba(30, 79, 214, 0.28);
}

.step-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-main);
}

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

/* 特色推荐 */
.featured {
    background: var(--bg-white);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

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

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-6px);
}

.feature-thumb {
    height: 240px;
    overflow: hidden;
}

.feature-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 0;
    transition: transform 0.5s ease;
}

.feature-card:hover .feature-thumb img {
    transform: scale(1.04);
}

.feature-body {
    padding: 28px 30px 32px;
}

.feature-tag {
    display: inline-block;
    padding: 4px 14px;
    background: rgba(247, 133, 45, 0.12);
    color: var(--accent-dark);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 14px;
}

.feature-body h3 {
    font-size: 21px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 12px;
    color: var(--text-main);
}

.feature-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.75;
    margin-bottom: 20px;
}

.text-link {
    color: var(--primary);
    font-size: 15px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.text-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

/* FAQ */
.faq-list {
    max-width: 840px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(30, 79, 214, 0.25);
    box-shadow: var(--shadow-sm);
}

.faq-item summary {
    padding: 22px 30px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    list-style: none;
    transition: var(--transition);
}

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

.faq-item summary:after {
    content: "+";
    font-size: 26px;
    font-weight: 400;
    color: var(--primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    line-height: 1;
}

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

.faq-item[open] summary {
    color: var(--primary);
}

.faq-content {
    padding: 0 30px 24px;
    color: var(--text-muted);
    line-height: 1.8;
    font-size: 15px;
}

/* CTA */
.cta-section {
    position: relative;
    padding: 110px 0;
    background: linear-gradient(135deg, rgba(15, 30, 53, 0.95), rgba(30, 79, 214, 0.85)), url('/assets/images/backpic/back-3.png') center / cover no-repeat;
    color: #fff;
    text-align: center;
}

.cta-inner {
    max-width: 720px;
    margin: 0 auto;
}

.cta-inner h2 {
    font-size: 38px;
    font-weight: 800;
    line-height: 1.25;
    margin-bottom: 18px;
}

.cta-inner p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 36px;
    line-height: 1.8;
}

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

/* 页脚 */
.site-footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.72);
    padding: 70px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 52px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-logo {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.55);
    max-width: 320px;
}

.footer-links-col h4,
.footer-contact h4 {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-links-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.58);
    transition: var(--transition);
}

.footer-links-col a:hover {
    color: #fff;
    padding-left: 8px;
}

.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.58);
    padding: 6px 0;
    line-height: 1.6;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.4);
}

/* 响应式 */
@media (max-width: 1024px) {
    .section {
        padding: 76px 0;
    }

    .hero-title {
        font-size: 42px;
    }

    .about-grid {
        gap: 40px;
    }

    .cat-grid {
        gap: 20px;
    }

    .category-thumb {
        height: 170px;
    }

    .stats-grid {
        gap: 20px;
    }

    .stat-number {
        font-size: 36px;
    }

    .steps-grid {
        gap: 20px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 28px;
    }

    .section-header {
        margin-bottom: 40px;
    }

    .nav-wrap {
        height: 70px;
    }

    .main-nav {
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-white);
        flex-direction: column;
        align-items: flex-start;
        padding: 20px 24px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        display: none;
        z-index: 99;
    }

    .main-nav.is-open {
        display: flex;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 12px 16px;
        font-size: 15px;
        border-radius: var(--radius-sm);
    }

    .nav-link.active {
        background: rgba(30, 79, 214, 0.08);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-cta {
        display: none;
    }

    .hero {
        min-height: 580px;
    }

    .hero-inner {
        padding: 60px 0;
    }

    .hero-title {
        font-size: 34px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

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

    .about-media img {
        aspect-ratio: 16 / 10;
    }

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

    .category-thumb {
        height: 200px;
    }

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

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

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

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

    .feature-thumb {
        height: 210px;
    }

    .cta-inner h2 {
        font-size: 28px;
    }

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

    .footer-links-col,
    .footer-contact {
        border-top: 1px solid rgba(255, 255, 255, 0.06);
        padding-top: 24px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }

    .section {
        padding: 50px 0;
    }

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

    .hero {
        min-height: 520px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-actions {
        flex-direction: column;
        width: 100%;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

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

    .news-item {
        padding: 20px;
    }

    .feature-body {
        padding: 22px;
    }

    .btn {
        padding: 13px 24px;
        font-size: 14px;
    }
}

/* roulang page: category1 */
:root {
  --primary: #d41b2c;
  --primary-dark: #a31320;
  --primary-light: #fce9ea;
  --secondary: #ff8a00;
  --bg: #f6f8fc;
  --surface: #ffffff;
  --text: #1f2933;
  --text-muted: #64748b;
  --border: #e8ebf0;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-sm: 0 4px 12px rgba(0,0,0,.06);
  --shadow: 0 12px 32px rgba(0,0,0,.09);
  --shadow-lg: 0 20px 48px rgba(0,0,0,.12);
  --transition: .3s ease;
  --container: 1200px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

button, input, summary {
  font: inherit;
}

.container {
  width: min(var(--container), 92%);
  margin: 0 auto;
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50rem;
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 14px;
}

.btn-lg {
  padding: 15px 38px;
  font-size: 16px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  box-shadow: 0 8px 20px rgba(212, 27, 44, .25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(212, 27, 44, .32);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-outline-light {
  background: transparent;
  border-color: rgba(255, 255, 255, .6);
  color: #fff;
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, .15);
  border-color: #fff;
}

.btn-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 15px;
  transition: gap var(--transition), color var(--transition);
}

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

.btn:focus-visible, .nav-link:focus-visible, .nav-toggle:focus-visible {
  outline: 3px solid rgba(212, 27, 44, .4);
  outline-offset: 2px;
}

/* ---------- 标签 ---------- */
.section-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 50rem;
  letter-spacing: .5px;
  text-transform: uppercase;
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-mark {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  font-weight: 800;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(212, 27, 44, .25);
}

.logo-text {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .5px;
  white-space: nowrap;
}

.main-nav {
  display: flex;
  gap: 6px;
  align-items: center;
}

.nav-link {
  padding: 10px 16px;
  border-radius: 50rem;
  font-weight: 500;
  font-size: 15px;
  color: var(--text);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.nav-link:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 6px 16px rgba(212, 27, 44, .28);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.nav-toggle span {
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .3s, opacity .3s;
}

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

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

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

/* ---------- 页面 Banner ---------- */
.page-banner {
  position: relative;
  padding: 90px 0 110px;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.page-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(15, 23, 42, .85), rgba(212, 27, 44, .65));
}

.banner-content {
  position: relative;
  z-index: 2;
  color: #fff;
  text-align: center;
}

.breadcrumb {
  display: flex;
  justify-content: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 22px;
  color: rgba(255,255,255,.7);
}

.breadcrumb a:hover {
  color: #fff;
}

.breadcrumb span:not(:last-child)::after {
  content: "/";
  margin-left: 10px;
  color: rgba(255,255,255,.4);
}

.banner-content h1 {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 18px;
  letter-spacing: 1px;
}

.banner-content p {
  font-size: 17px;
  max-width: 620px;
  margin: 0 auto 40px;
  color: rgba(255,255,255,.85);
  line-height: 1.7;
}

.banner-stats {
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.stat {
  background: rgba(255,255,255,.15);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.2);
  border-radius: var(--radius);
  padding: 18px 28px;
  min-width: 130px;
  transition: background var(--transition), transform var(--transition);
}

.stat:hover {
  background: rgba(255,255,255,.24);
  transform: translateY(-4px);
}

.stat strong {
  display: block;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 4px;
}

.stat span {
  font-size: 14px;
  color: rgba(255,255,255,.85);
}

/* ---------- 通用 Section ---------- */
.section {
  padding: 80px 0;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-head h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  line-height: 1.3;
  margin: 14px 0 16px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 16px;
}

.section-head.left {
  text-align: left;
  margin: 0 0 28px;
}

.section-head.left h2 {
  margin-top: 10px;
}

/* ---------- 指南分类卡片 ---------- */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.guide-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--border);
}

.guide-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.guide-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  aspect-ratio: 16/10;
}

.guide-body {
  padding: 26px;
}

.guide-label {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 50rem;
  margin-bottom: 14px;
}

.guide-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.guide-body p {
  color: var(--text-muted);
  font-size: 15px;
  margin-bottom: 18px;
}

/* ---------- 操作步骤 ---------- */
.steps-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  position: relative;
}

.steps-grid::before {
  content: "";
  position: absolute;
  top: 42px;
  left: 12%;
  right: 12%;
  border-top: 2px dashed var(--border);
}

.step-item {
  text-align: center;
  padding: 38px 24px 30px;
  background: var(--bg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.step-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow);
}

.step-num {
  position: absolute;
  top: 16px;
  left: 16px;
  font-size: 16px;
  font-weight: 800;
  color: rgba(212, 27, 44, .25);
}

.step-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #fff;
  box-shadow: 0 8px 20px rgba(212, 27, 44, .22);
}

.step-item h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.step-item p {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 技巧与安全 ---------- */
.split-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 56px;
  align-items: center;
}

.tips-list li {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 22px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.tips-list li i {
  color: var(--primary);
  font-size: 20px;
  margin-top: 2px;
}

.tips-list strong {
  display: block;
  font-weight: 700;
  margin-bottom: 2px;
}

.tips-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.tips-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
  transition: transform .6s ease;
}

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

.tips-content .btn {
  margin-top: 12px;
}

/* ---------- FAQ ---------- */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 24px;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.faq-item:hover {
  border-color: rgba(212, 27, 44, .3);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  font-weight: 600;
  font-size: 16px;
  color: var(--text);
  transition: color var(--transition);
}

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

.faq-item summary i {
  color: var(--primary);
  transition: transform .3s ease;
}

.faq-item[open] summary {
  color: var(--primary);
}

.faq-item[open] summary i {
  transform: rotate(180deg);
}

.faq-item .faq-content {
  padding-bottom: 20px;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 70px 0 90px;
}

.cta-box {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--secondary));
  border-radius: var(--radius-lg);
  text-align: center;
  padding: 64px 32px;
  color: #fff;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.cta-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.15) 1px, transparent 1px);
  background-size: 22px 22px;
}

.cta-box > * {
  position: relative;
}

.cta-box h2 {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  margin-bottom: 14px;
}

.cta-box p {
  font-size: 17px;
  margin-bottom: 36px;
  color: rgba(255,255,255,.9);
}

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

/* ---------- 页脚 ---------- */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 80px 0 30px;
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 50px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  margin-bottom: 30px;
}

.footer-brand .footer-logo {
  font-size: 22px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: .5px;
}

.footer-brand p {
  line-height: 1.8;
  max-width: 330px;
}

.footer-links-col h4,
.footer-contact h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}

.footer-links-col a {
  display: block;
  padding: 6px 0;
  color: #94a3b8;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-links-col a:hover {
  color: var(--secondary);
  padding-left: 6px;
}

.footer-contact p {
  padding: 6px 0;
  line-height: 1.7;
}

.footer-bottom {
  text-align: center;
  padding-top: 8px;
}

.footer-bottom p {
  color: #64748b;
}

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 20px 5%;
    gap: 8px;
    display: none;
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open {
    display: flex;
  }

  .nav-link {
    text-align: center;
    padding: 14px 20px;
    border-radius: var(--radius-sm);
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .grid-3,
  .steps-grid {
    grid-template-columns: 1fr 1fr;
  }

  .steps-grid::before {
    display: none;
  }

  .split-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

@media (max-width: 768px) {
  .section {
    padding: 60px 0;
  }

  .page-banner {
    padding: 70px 0 80px;
  }

  .banner-stats {
    gap: 14px;
  }

  .stat {
    padding: 14px 20px;
    min-width: 110px;
  }

  .stat strong {
    font-size: 22px;
  }

  .grid-3,
  .steps-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

@media (max-width: 520px) {
  .container {
    width: 90%;
  }

  .logo-text {
    font-size: 18px;
  }

  .page-banner h1 {
    font-size: 32px;
  }

  .page-banner p {
    font-size: 15px;
  }

  .banner-stats {
    flex-direction: column;
    align-items: center;
  }

  .stat {
    width: 100%;
    text-align: center;
  }

  .section-head h2 {
    font-size: 26px;
  }

  .section-head p {
    font-size: 15px;
  }

  .cta-box {
    padding: 50px 20px;
  }

  .cta-actions .btn {
    width: 100%;
  }
}

/* roulang page: article */
:root {
    --primary: #1d4ed8;
    --primary-dark: #1e40af;
    --primary-light: #dbeafe;
    --primary-lighter: #eff6ff;
    --accent: #f59e0b;
    --accent-light: #fef3c7;
    --dark: #0f172a;
    --text: #334155;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --bg: #f8fafc;
    --white: #ffffff;
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(15,23,42,.06);
    --shadow-md: 0 6px 20px rgba(15,23,42,.08);
    --shadow-lg: 0 16px 48px rgba(15,23,42,.14);
    --transition: all .3s ease;
    --container: 1200px;
    --header-height: 72px;
    --font-family: "PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none;transition:var(--transition)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;line-height:1;transition:var(--transition);border:2px solid transparent}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(29,78,216,.25)}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(29,78,216,.32)}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary-lighter);transform:translateY(-2px)}
.btn-outline-light{background:transparent;color:#fff;border-color:rgba(255,255,255,.7)}
.btn-outline-light:hover{background:rgba(255,255,255,.14);border-color:#fff;transform:translateY(-2px)}
.btn-sm{padding:9px 18px;font-size:14px;border-radius:8px}
.btn-block{width:100%;display:flex}

.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border);height:var(--header-height);display:flex;align-items:center}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;gap:24px;width:100%}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;font-size:20px;font-weight:800;border-radius:12px;box-shadow:0 4px 12px rgba(29,78,216,.32)}
.logo-text{font-size:20px;font-weight:800;color:var(--dark);letter-spacing:1px}
.main-nav{display:flex;align-items:center;gap:6px;margin:0 auto}
.nav-link{display:inline-flex;align-items:center;padding:10px 16px;border-radius:10px;font-size:15px;font-weight:500;color:var(--text);transition:var(--transition)}
.nav-link:hover{background:var(--primary-lighter);color:var(--primary)}
.nav-link.active{background:var(--primary-lighter);color:var(--primary);font-weight:600}
.nav-toggle{display:none;flex-direction:column;gap:5px;width:42px;height:42px;align-items:center;justify-content:center;border-radius:10px;border:1px solid var(--border);background:var(--white)}
.nav-toggle span{display:block;width:20px;height:2px;background:var(--dark);border-radius:2px;transition:var(--transition)}
.nav-toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.active span:nth-child(2){opacity:0}
.nav-toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.article-banner{background:linear-gradient(135deg,rgba(15,23,42,.9) 0%,rgba(29,78,216,.78) 60%),url('/assets/images/backpic/back-2.png') center center/cover no-repeat;padding:72px 0 56px;color:#fff;position:relative;overflow:hidden}
.breadcrumb{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.7);margin-bottom:16px;flex-wrap:wrap}
.breadcrumb a{color:rgba(255,255,255,.75);transition:var(--transition)}
.breadcrumb a:hover{color:#fff}
.breadcrumb .sep{color:rgba(255,255,255,.45)}
.breadcrumb .current{color:#fff}
.badge{display:inline-block;padding:6px 14px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);color:#fff;border-radius:20px;font-size:13px;font-weight:600;backdrop-filter:blur(8px);margin-bottom:16px}
.article-banner h1{font-size:38px;line-height:1.4;font-weight:800;max-width:900px;margin-bottom:18px}
.banner-meta{display:flex;align-items:center;gap:14px;font-size:14px;color:rgba(255,255,255,.78);flex-wrap:wrap}
.banner-meta .dot{opacity:.5}
.banner-meta .item{display:inline-flex;align-items:center;gap:6px}

.article-section{padding:56px 0 64px;background:var(--bg)}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:48px;align-items:start}
.article-main{background:var(--white);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid var(--border)}
.article-cover{width:100%;height:400px;overflow:hidden;position:relative}
.article-cover img{width:100%;height:100%;object-fit:cover;transition:transform .6s ease}
.article-main:hover .article-cover img{transform:scale(1.02)}
.article-body{padding:40px 44px 28px}
.article-body p{margin-bottom:1.5em;line-height:1.95;font-size:16px;color:var(--text)}
.article-body h2{font-size:24px;font-weight:700;color:var(--dark);margin:1.6em 0 .8em;padding-bottom:8px;border-bottom:2px solid var(--primary-lighter)}
.article-body h3{font-size:20px;font-weight:600;color:var(--dark);margin:1.4em 0 .6em}
.article-body img{border-radius:12px;margin:1.6em auto;box-shadow:var(--shadow-sm)}
.article-body ul,.article-body ol{margin:1em 0 1.4em 1.6em}
.article-body ul li{list-style:disc;margin-bottom:.5em;line-height:1.85}
.article-body ol li{list-style:decimal;margin-bottom:.5em;line-height:1.85}
.article-body blockquote{margin:1.6em 0;padding:18px 22px;background:var(--primary-lighter);border-left:4px solid var(--primary);border-radius:0 10px 10px 0;color:var(--text);font-style:italic}
.article-body a{color:var(--primary);font-weight:500;border-bottom:1px solid transparent}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-tags{padding:20px 44px 32px;display:flex;flex-wrap:wrap;gap:10px;border-top:1px solid var(--border)}
.tag{display:inline-block;padding:6px 14px;background:var(--bg);border:1px solid var(--border);border-radius:20px;font-size:13px;color:var(--text-muted);transition:var(--transition)}
.tag:hover{background:var(--primary-lighter);border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}

.article-side{display:flex;flex-direction:column;gap:24px;position:sticky;top:calc(var(--header-height) + 24px)}
.side-card{background:var(--white);border-radius:var(--radius-lg);padding:28px;border:1px solid var(--border);box-shadow:var(--shadow-sm)}
.side-card>h3{font-size:16px;font-weight:700;margin-bottom:20px;position:relative;padding-left:14px;color:var(--dark)}
.side-card>h3::before{content:'';position:absolute;left:0;top:4px;width:4px;height:16px;background:var(--primary);border-radius:4px}
.side-info{text-align:center;padding:32px 24px}
.side-info .side-logo{width:56px;height:56px;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;font-size:24px;font-weight:800;border-radius:16px;box-shadow:0 8px 24px rgba(29,78,216,.32)}
.side-info h3{font-size:18px;text-align:center;padding-left:0;margin-bottom:10px}
.side-info h3::before{display:none}
.side-info p{font-size:14px;color:var(--text-muted);margin:10px 0 20px;line-height:1.75}
.side-post-list{display:flex;flex-direction:column}
.side-post-list li{padding:12px 0;border-bottom:1px solid var(--border)}
.side-post-list li:last-child{border-bottom:none;padding-bottom:0}
.side-post-list li a{display:-webkit-box;font-size:14px;font-weight:500;color:var(--text);line-height:1.6;margin-bottom:4px;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:var(--transition)}
.side-post-list li a:hover{color:var(--primary)}
.side-date{font-size:12px;color:var(--text-light)}
.side-channels{display:flex;flex-direction:column;gap:10px}
.channel-item{display:flex;align-items:center;gap:10px;padding:12px 16px;background:var(--bg);border-radius:10px;font-size:14px;font-weight:500;color:var(--text);border:1px solid transparent;transition:var(--transition)}
.channel-item::before{content:'▸';color:var(--primary);font-size:14px}
.channel-item:hover{border-color:var(--primary);background:var(--primary-lighter);color:var(--primary);transform:translateX(4px)}

.not-found{text-align:center;padding:64px 24px}
.not-found h2{font-size:30px;color:var(--dark);margin-bottom:14px}
.not-found p{color:var(--text-muted);margin-bottom:28px;font-size:15px}

.related-section{padding:64px 0;background:var(--white);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{text-align:center;margin-bottom:40px}
.section-head h2{font-size:32px;font-weight:800;color:var(--dark);margin-bottom:8px}
.section-head p{color:var(--text-muted);font-size:15px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.related-card{background:var(--bg);border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--border);transition:var(--transition);display:block}
.related-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.related-cover{height:180px;overflow:hidden;position:relative}
.related-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.related-card:hover .related-cover img{transform:scale(1.06)}
.related-body{padding:20px 22px 24px}
.related-cat{display:inline-block;padding:4px 12px;background:var(--primary-lighter);color:var(--primary);border-radius:16px;font-size:12px;font-weight:600;margin-bottom:12px}
.related-body h3{font-size:17px;font-weight:600;color:var(--dark);margin-bottom:8px;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-body p{font-size:14px;color:var(--text-muted);line-height:1.7;margin-bottom:12px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-date{font-size:13px;color:var(--text-light)}

.faq-section{padding:64px 0;background:var(--bg)}
.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;max-width:960px;margin:0 auto}
.faq-item{background:var(--white);border:1px solid var(--border);border-radius:var(--radius-md);padding:28px;transition:var(--transition)}
.faq-item:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.faq-item h3{font-size:16px;font-weight:700;color:var(--dark);margin-bottom:10px;padding-left:28px;position:relative}
.faq-item h3::before{content:'Q';position:absolute;left:0;top:0;width:20px;height:20px;background:var(--primary-lighter);color:var(--primary);font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;border-radius:6px}
.faq-item p{font-size:14px;color:var(--text-muted);line-height:1.85}

.cta-section{padding:64px 0;background:var(--white)}
.cta-box{background:linear-gradient(135deg,var(--dark) 0%,var(--primary-dark) 100%);border-radius:var(--radius-lg);padding:56px 48px;display:flex;align-items:center;justify-content:space-between;gap:40px;color:#fff;position:relative;overflow:hidden}
.cta-box::before{content:'';position:absolute;top:-80px;right:-80px;width:240px;height:240px;background:rgba(255,255,255,.06);border-radius:50%}
.cta-box::after{content:'';position:absolute;bottom:-60px;left:20%;width:160px;height:160px;background:rgba(255,255,255,.04);border-radius:50%}
.cta-content{position:relative;z-index:2}
.cta-content h2{font-size:28px;font-weight:800;margin-bottom:10px}
.cta-content p{color:rgba(255,255,255,.82);font-size:15px;max-width:420px}
.cta-actions{display:flex;gap:14px;flex-shrink:0;position:relative;z-index:2;flex-wrap:wrap}

.site-footer{background:var(--dark);color:#94a3b8;padding:64px 0 0;border-top:3px solid var(--primary)}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-logo{font-size:22px;font-weight:800;color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:#94a3b8}
.footer-links-col h4,.footer-contact h4{font-size:16px;font-weight:600;color:#fff;margin-bottom:20px}
.footer-links-col a{display:block;color:#94a3b8;font-size:14px;padding:6px 0;transition:var(--transition)}
.footer-links-col a:hover{color:#fff;padding-left:6px}
.footer-contact p{font-size:14px;line-height:1.9;color:#94a3b8;margin-bottom:4px}
.footer-bottom{padding:24px 0;text-align:center;font-size:14px;color:#64748b;border-top:1px solid rgba(255,255,255,.06);margin-top:0}

@media (max-width:1024px){
    .main-nav{gap:2px}
    .nav-link{padding:8px 12px;font-size:14px}
    .article-banner h1{font-size:32px}
    .article-layout{grid-template-columns:1fr}
    .article-side{position:static;flex-direction:row;flex-wrap:wrap}
    .side-card{flex:1;min-width:240px}
    .related-grid{grid-template-columns:repeat(2,1fr)}
    .footer-grid{grid-template-columns:1fr 1fr;gap:36px}
    .cta-box{padding:40px 32px;flex-direction:column;text-align:center}
    .cta-actions{justify-content:center}
    .cta-content p{max-width:none}
}
@media (max-width:768px){
    .nav-toggle{display:flex}
    .main-nav{position:fixed;top:var(--header-height);left:0;right:0;background:var(--white);flex-direction:column;align-items:stretch;padding:16px;gap:8px;border-bottom:1px solid var(--border);box-shadow:var(--shadow-md);transform:translateY(-16px);opacity:0;visibility:hidden;transition:var(--transition);margin:0;z-index:999}
    .main-nav.open{transform:translateY(0);opacity:1;visibility:visible}
    .nav-cta{display:none}
    .nav-link{padding:14px 16px;font-size:15px;border-radius:10px}
    .article-banner{padding:48px 0 40px}
    .article-banner h1{font-size:26px}
    .article-body{padding:28px 20px 20px}
    .article-tags{padding:16px 20px 24px}
    .article-cover{height:260px}
    .related-grid{grid-template-columns:1fr}
    .faq-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr;gap:24px}
    .section-head h2{font-size:26px}
    .cta-box{padding:36px 24px}
    .cta-content h2{font-size:24px}
}
@media (max-width:520px){
    .container{padding:0 16px}
    .logo-text{font-size:17px}
    .logo-mark{width:34px;height:34px;font-size:16px;border-radius:10px}
    .article-banner h1{font-size:22px}
    .banner-meta{flex-wrap:wrap;gap:8px}
    .cta-box{padding:32px 20px}
    .cta-actions{flex-direction:column;align-items:stretch}
    .side-card{min-width:100%}
    .related-cover{height:200px}
    .article-cover{height:210px}
    .article-body p{font-size:15px;line-height:1.85}
    .faq-item{padding:22px 18px}
    .footer-logo{font-size:18px}
}

/* roulang page: category2 */
:root {
            --primary: #1d4ed8;
            --primary-light: #3b82f6;
            --primary-dark: #1e3a8a;
            --primary-soft: #eff6ff;
            --accent: #f59e0b;
            --accent-light: #fef3c7;
            --bg: #f8fafc;
            --surface: #ffffff;
            --text: #1e293b;
            --text-weak: #64748b;
            --border: #e2e8f0;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow: 0 2px 12px rgba(30, 64, 175, 0.08);
            --shadow-hover: 0 8px 28px rgba(30, 64, 175, 0.13);
            --transition: all 0.3s ease;
            --container-w: 1200px;
            --header-h: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            list-style: none;
        }

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

        /* ========== Header / Nav ========== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
        }

        .nav-wrap {
            display: flex;
            align-items: center;
            height: var(--header-h);
            gap: 32px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(29, 78, 216, 0.28);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            margin-left: auto;
        }

        .nav-link {
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-weak);
            transition: var(--transition);
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-soft);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-soft);
            font-weight: 600;
        }

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

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: 1px solid var(--border);
            background: var(--surface);
            transition: var(--transition);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            border-radius: 2px;
            background: var(--text);
            transition: var(--transition);
        }

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

        /* ========== Buttons ========== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-align: center;
        }

        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(29, 78, 216, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(29, 78, 216, 0.4);
        }

        .btn-outline {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            color: #1e293b;
            box-shadow: 0 4px 16px rgba(245, 158, 11, 0.3);
        }

        .btn-accent:hover {
            background: #d97706;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .btn:focus-visible {
            outline: 3px solid rgba(59, 130, 246, 0.5);
            outline-offset: 2px;
        }

        /* ========== Page Hero ========== */
        .page-hero {
            position: relative;
            padding: 96px 0 88px;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(15, 23, 42, 0.88) 20%, rgba(30, 64, 175, 0.62) 70%, rgba(59, 130, 246, 0.35) 100%);
        }

        .page-hero .container {
            position: relative;
            z-index: 2;
            max-width: 900px;
            text-align: center;
        }

        .page-hero .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.16);
            border: 1px solid rgba(255, 255, 255, 0.3);
            backdrop-filter: blur(6px);
            padding: 6px 18px;
            border-radius: 999px;
            font-size: 13px;
            letter-spacing: 1px;
            margin-bottom: 24px;
            color: #fff;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: 1px;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .page-hero .lead {
            font-size: 18px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 720px;
            margin: 0 auto 36px;
            line-height: 1.8;
        }

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

        /* ========== Sections ========== */
        .section {
            padding: 88px 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 56px;
        }

        .section-head .subtitle {
            display: inline-block;
            background: var(--primary-soft);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 14px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 12px;
            color: var(--text);
        }

        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
        }

        /* ========== Quick Start Cards ========== */
        .quick-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }

        .quick-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .quick-card::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .quick-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .quick-card:hover::after {
            opacity: 1;
        }

        .quick-icon {
            width: 64px;
            height: 64px;
            border-radius: 20px;
            background: linear-gradient(135deg, var(--primary-soft), #dbeafe);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 24px;
            color: var(--primary);
            transition: var(--transition);
        }

        .quick-card:hover .quick-icon {
            transform: scale(1.06);
        }

        .quick-card h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

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

        /* ========== Steps ========== */
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 20px;
            counter-reset: step;
            position: relative;
        }

        .steps-wrap::before {
            content: '';
            position: absolute;
            top: 36px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: linear-gradient(90deg, var(--primary-light), var(--accent));
            opacity: 0.3;
            border-radius: 2px;
        }

        .step-item {
            text-align: center;
            position: relative;
            z-index: 1;
        }

        .step-num {
            width: 72px;
            height: 72px;
            margin: 0 auto 18px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 22px;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 8px 20px rgba(29, 78, 216, 0.25);
            border: 4px solid #fff;
            position: relative;
            z-index: 2;
        }

        .step-item:nth-child(even) .step-num {
            background: var(--accent);
            box-shadow: 0 8px 20px rgba(245, 158, 11, 0.3);
        }

        .step-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text);
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
            padding: 0 6px;
        }

        /* ========== Guide Categories ========== */
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .guide-card {
            background: var(--surface);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
        }

        .guide-cover {
            height: 190px;
            overflow: hidden;
            position: relative;
        }

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

        .guide-card:hover .guide-cover img {
            transform: scale(1.06);
        }

        .guide-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 23, 42, 0.35), transparent 60%);
        }

        .guide-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }

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

        .guide-body h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text);
        }

        .guide-body p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            flex: 1;
        }

        .guide-link {
            margin-top: 18px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
        }

        .guide-link:hover {
            gap: 12px;
            color: var(--primary-dark);
        }

        /* ========== Article List ========== */
        .content-split {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 40px;
        }

        .article-list {
            display: flex;
            flex-direction: column;
            gap: 18px;
        }

        .article-item {
            display: flex;
            gap: 20px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px 24px;
            box-shadow: var(--shadow);
            transition: var(--transition);
            align-items: flex-start;
        }

        .article-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .article-num {
            font-size: 26px;
            font-weight: 800;
            color: var(--primary-light);
            line-height: 1;
            flex-shrink: 0;
            width: 40px;
            opacity: 0.7;
        }

        .article-content {
            flex: 1;
        }

        .article-content h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text);
            line-height: 1.5;
        }

        .article-content h3 a:hover {
            color: var(--primary);
        }

        .article-content p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            margin-bottom: 8px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 14px;
            font-size: 13px;
            color: var(--text-weak);
        }

        .article-meta .tag {
            background: var(--primary-soft);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
            font-size: 12px;
        }

        .side-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            margin-bottom: 28px;
        }

        .side-card h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 14px;
            border-bottom: 2px solid var(--primary-soft);
            color: var(--text);
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            color: var(--text-weak);
            transition: var(--transition);
        }

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

        .side-stats {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .stat-line {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            padding: 10px 0;
            border-bottom: 1px dashed var(--border);
        }

        .stat-line:last-child {
            border-bottom: none;
        }

        .stat-label {
            color: var(--text-weak);
        }

        .stat-value {
            font-weight: 700;
            color: var(--primary);
            font-size: 16px;
        }

        /* ========== FAQ ========== */
        .faq-wrap {
            max-width: 840px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .faq-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }

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

        .faq-q {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            transition: var(--transition);
            user-select: none;
        }

        .faq-q .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-soft);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 15px;
            font-weight: 700;
            transition: var(--transition);
        }

        .faq-item.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(45deg);
        }

        .faq-a {
            max-height: 0;
            overflow: hidden;
            padding: 0 24px;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-weak);
            font-size: 15px;
            line-height: 1.75;
        }

        .faq-item.active .faq-a {
            max-height: 300px;
            padding: 0 24px 22px;
        }

        /* ========== CTA ========== */
        .cta-section {
            background: linear-gradient(120deg, var(--primary-dark), var(--primary) 55%, var(--primary-light));
            border-radius: var(--radius);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -20%;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60%;
            left: -10%;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(245, 158, 11, 0.14);
        }

        .cta-section .container {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .cta-section p {
            font-size: 16px;
            opacity: 0.85;
            max-width: 560px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

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

        /* ========== Footer ========== */
        .site-footer {
            background: #0f172a;
            color: rgba(255, 255, 255, 0.75);
            padding: 72px 0 0;
            margin-top: 96px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-logo {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            letter-spacing: 1px;
            margin-bottom: 16px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
        }

        .footer-links-col h4,
        .footer-contact h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .footer-links-col a {
            display: block;
            color: rgba(255, 255, 255, 0.55);
            font-size: 14px;
            padding: 6px 0;
            transition: var(--transition);
        }

        .footer-links-col a:hover {
            color: var(--accent);
            transform: translateX(4px);
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            padding: 5px 0;
        }

        .footer-bottom {
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ========== Responsive ========== */
        @media (max-width: 1024px) {
            .quick-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .steps-wrap {
                grid-template-columns: repeat(3, 1fr);
                gap: 28px;
            }

            .steps-wrap::before {
                display: none;
            }

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

            .content-split {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
        }

        @media (max-width: 768px) {
            .nav-wrap {
                gap: 12px;
            }

            .main-nav {
                position: fixed;
                top: var(--header-h);
                left: 0;
                right: 0;
                background: var(--surface);
                flex-direction: column;
                align-items: center;
                gap: 4px;
                padding: 20px 16px;
                box-shadow: 0 16px 32px rgba(0, 0, 0, 0.1);
                border-bottom: 1px solid var(--border);
                transform: translateY(-150%);
                opacity: 0;
                visibility: hidden;
                transition: all 0.35s ease;
                z-index: 99;
            }

            .main-nav.open {
                transform: translateY(0);
                opacity: 1;
                visibility: visible;
            }

            .main-nav .nav-link {
                width: 100%;
                text-align: center;
                padding: 12px 20px;
                border-radius: 12px;
            }

            .nav-cta {
                display: none;
            }

            .nav-toggle {
                display: flex;
                margin-left: auto;
            }

            .page-hero {
                padding: 68px 0 60px;
            }

            .page-hero h1 {
                font-size: 30px;
            }

            .page-hero .lead {
                font-size: 16px;
            }

            .section {
                padding: 64px 0;
            }

            .section-head h2 {
                font-size: 28px;
            }

            .cta-section {
                padding: 48px 24px;
            }

            .cta-section h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 16px;
            }

            .quick-grid,
            .guide-grid {
                grid-template-columns: 1fr;
            }

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

            .article-item {
                flex-direction: column;
                gap: 10px;
            }

            .article-num {
                font-size: 20px;
            }

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

            .hero-actions {
                flex-direction: column;
            }

            .hero-actions .btn {
                width: 100%;
            }

            .faq-q {
                padding: 16px 18px;
                font-size: 15px;
            }

            .faq-a {
                padding: 0 18px;
            }

            .faq-item.active .faq-a {
                padding: 0 18px 18px;
            }
        }

/* roulang page: category3 */
:root {
    --primary: #1e3a8a;
    --primary-light: #2563eb;
    --primary-dark: #172554;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --accent-dark: #d97706;
    --bg: #f8fafc;
    --surface: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(30, 58, 138, 0.06);
    --shadow: 0 8px 30px rgba(30, 58, 138, 0.08);
    --shadow-lg: 0 16px 48px rgba(30, 58, 138, 0.12);
    --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --transition: all 0.3s ease;
}

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

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

body {
    font-family: var(--font-family);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 16px;
}

a {
    color: inherit;
    text-decoration: none;
}

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

ul,
ol {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header & Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.logo-mark {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.28);
}

.logo-text {
    font-size: 18px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    position: relative;
    display: inline-block;
    padding: 8px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text);
    border-radius: 999px;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(30, 58, 138, 0.06);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(30, 58, 138, 0.1);
    font-weight: 600;
}

.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 18px;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    cursor: pointer;
    border-radius: 8px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    border-radius: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(30, 58, 138, 0.32);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(30, 58, 138, 0.2);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid rgba(30, 58, 138, 0.25);
}

.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(30, 58, 138, 0.04);
    transform: translateY(-2px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: #7c2d12;
    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.3);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(245, 158, 11, 0.38);
}

.btn:focus-visible {
    outline: 3px solid rgba(59, 130, 246, 0.5);
    outline-offset: 2px;
}

/* ===== Page Hero ===== */
.page-hero {
    position: relative;
    padding: 96px 0 72px;
    background:
        linear-gradient(135deg, rgba(23, 37, 84, 0.92), rgba(30, 58, 138, 0.78)),
        url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    color: #fff;
}

.page-hero::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to top, var(--bg), transparent);
}

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

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 20px;
}

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

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

.breadcrumb i {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
}

.hero-title {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.hero-title span {
    color: var(--accent-light);
}

.hero-subtitle {
    max-width: 680px;
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 28px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 36px;
}

.hero-search {
    display: flex;
    align-items: center;
    gap: 8px;
    max-width: 460px;
    background: rgba(255, 255, 255, 0.12);
    border: 1px solid rgba(255, 255, 255, 0.25);
    border-radius: 999px;
    padding: 6px 6px 6px 18px;
    backdrop-filter: blur(6px);
}

.hero-search input {
    flex: 1;
    background: transparent;
    color: #fff;
    font-size: 14px;
    padding: 9px 0;
}

.hero-search input::placeholder {
    color: rgba(255, 255, 255, 0.65);
}

.hero-search button {
    background: var(--accent);
    color: #7c2d12;
    font-weight: 700;
    font-size: 14px;
    padding: 9px 22px;
    border-radius: 999px;
    cursor: pointer;
    transition: var(--transition);
}

.hero-search button:hover {
    background: var(--accent-light);
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 24px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 6px 16px;
    border-radius: 999px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(4px);
}

.hero-badge i {
    color: var(--accent-light);
}

/* ===== Section Common ===== */
.section {
    padding: 90px 0;
}

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

.section-head {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 56px;
}

.section-tagline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    background: rgba(30, 58, 138, 0.08);
    padding: 6px 18px;
    border-radius: 999px;
    margin-bottom: 14px;
}

.section-title {
    font-size: 34px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--text);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ===== Filter Tabs ===== */
.filter-tabs {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 48px;
}

.tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    border-radius: 999px;
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition);
}

.tab-btn:hover {
    border-color: var(--primary-light);
    color: var(--primary);
    transform: translateY(-2px);
}

.tab-btn.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 6px 20px rgba(30, 58, 138, 0.25);
}

/* ===== Activity Cards ===== */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

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

.activity-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.card-cover {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

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

.activity-card:hover .card-cover img {
    transform: scale(1.05);
}

.card-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(23, 37, 84, 0.35), transparent 60%);
}

.card-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary);
    font-size: 13px;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card-badge i {
    color: var(--accent);
}

.card-meta-badge {
    position: absolute;
    bottom: 14px;
    right: 14px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(23, 37, 84, 0.75);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 999px;
    backdrop-filter: blur(4px);
}

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

.card-tag {
    display: inline-flex;
    align-items: center;
    font-size: 12px;
    font-weight: 700;
    color: var(--accent-dark);
    background: rgba(245, 158, 11, 0.12);
    padding: 4px 12px;
    border-radius: 999px;
    width: fit-content;
    margin-bottom: 12px;
}

.card-title {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 10px;
    color: var(--text);
    transition: var(--transition);
}

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

.card-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 18px;
    flex: 1;
}

.card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.card-footer .btn {
    padding: 8px 18px;
    font-size: 13px;
}

.card-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.card-meta i {
    color: var(--primary-light);
}

/* ===== Stats ===== */
.stats-section {
    position: relative;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    padding: 88px 0;
    overflow: hidden;
}

.stats-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-3.png') center/cover no-repeat;
    opacity: 0.1;
}

.stats-section .container {
    position: relative;
    z-index: 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

.stat-item {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius);
    padding: 36px 20px;
    backdrop-filter: blur(6px);
    transition: var(--transition);
}

.stat-item:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-4px);
}

.stat-num {
    font-size: 44px;
    font-weight: 800;
    color: var(--accent-light);
    line-height: 1.2;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.85);
}

/* ===== Process ===== */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    counter-reset: step;
}

.process-step {
    position: relative;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 36px 28px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    text-align: center;
}

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

.step-num {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    box-shadow: 0 8px 20px rgba(30, 58, 138, 0.2);
}

.step-title {
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text);
}

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

/* ===== Rules ===== */
.rules-section {
    background: var(--surface);
}

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

.rule-item {
    display: flex;
    gap: 16px;
    background: var(--bg);
    border-radius: var(--radius);
    padding: 26px 28px;
    border-left: 4px solid var(--accent);
    transition: var(--transition);
}

.rule-item:hover {
    background: rgba(245, 158, 11, 0.05);
    transform: translateX(4px);
}

.rule-icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: rgba(245, 158, 11, 0.14);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-dark);
    font-size: 18px;
}

.rule-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

.rule-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

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

.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 14px;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item.active {
    border-color: var(--primary-light);
    box-shadow: var(--shadow);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 22px 28px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

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

.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: rgba(30, 58, 138, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 14px;
    transition: var(--transition);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    background: var(--primary);
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
    padding: 0 28px;
}

.faq-item.active .faq-answer {
    max-height: 240px;
    padding-bottom: 22px;
}

.faq-answer p {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.8;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

/* ===== CTA ===== */
.cta-section {
    padding: 90px 0;
}

.cta-box {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary), var(--primary-light));
    border-radius: var(--radius-lg);
    padding: 64px 48px;
    text-align: center;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 280px;
    height: 280px;
    background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    opacity: 0.15;
    border-radius: 50%;
    transform: translate(60px, -60px);
}

.cta-box::after {
    content: "";
    position: absolute;
    bottom: -80px;
    left: -60px;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    background: rgba(245, 158, 11, 0.25);
}

.cta-box .container-inner {
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-text {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.8;
}

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

/* ===== Footer ===== */
.site-footer {
    position: relative;
    z-index: 3;
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.78);
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer-brand .footer-logo {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    max-width: 320px;
}

.footer-links-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links-col h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
}

.footer-links-col a {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    padding: 6px 0;
    transition: var(--transition);
}

.footer-links-col a:hover {
    color: var(--accent-light);
    padding-left: 6px;
}

.footer-contact h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 10px;
}

.footer-contact h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 24px;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
}

.footer-contact p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 2;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 22px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

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

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

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 36px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow);
        gap: 4px;
    }

    .main-nav.open {
        display: flex;
    }

    .nav-link {
        padding: 12px 20px;
        border-radius: 10px;
    }

    .nav-link.active::after {
        display: none;
    }

    .nav-cta {
        display: none;
    }

    .page-hero {
        padding: 72px 0 60px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .section {
        padding: 72px 0;
    }

    .section-title {
        font-size: 28px;
    }

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

@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }

    .nav-wrap {
        height: 64px;
    }

    .logo-text {
        font-size: 16px;
    }

    .logo-mark {
        width: 36px;
        height: 36px;
        font-size: 18px;
    }

    .page-hero {
        padding: 56px 0 48px;
    }

    .hero-title {
        font-size: 26px;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .hero-search {
        flex-direction: column;
        border-radius: 16px;
        padding: 12px;
        gap: 10px;
    }

    .hero-search button {
        width: 100%;
    }

    .filter-tabs {
        gap: 8px;
    }

    .tab-btn {
        padding: 8px 16px;
        font-size: 13px;
    }

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

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

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

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

    .rule-item {
        padding: 20px;
    }

    .cta-box {
        padding: 44px 24px;
        border-radius: 20px;
    }

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

    .cta-actions .btn {
        width: 100%;
    }

    .faq-question {
        padding: 18px 20px;
        font-size: 15px;
    }

    .faq-answer {
        padding: 0 20px;
    }

    .faq-item.active .faq-answer {
        padding-bottom: 18px;
    }
}