/* roulang page: index */
/* ========== 设计变量 ========== */
:root {
    --primary: #C62828;
    --primary-dark: #A81D1D;
    --primary-light: #EF5350;
    --accent: #FFB300;
    --accent-dark: #E69F00;
    --deep-bg: #141824;
    --deep-bg-light: #1E2435;
    --light-bg: #F6F7F9;
    --white: #FFFFFF;
    --text-main: #1F2430;
    --text-secondary: #5F6B7A;
    --text-light: #9AA5B4;
    --border: #E6E9EF;
    --radius: 14px;
    --radius-sm: 8px;
    --radius-lg: 22px;
    --shadow-sm: 0 3px 12px rgba(20,24,36,0.06);
    --shadow-md: 0 8px 28px rgba(20,24,36,0.08);
    --shadow-lg: 0 16px 48px rgba(20,24,36,0.12);
    --transition: all 0.3s ease;
    --space-section: 90px;
    --space-section-sm: 60px;
}

/* ========== Reset & Base ========== */
*, *::before, *::after {
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    margin: 0;
    padding: 0;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-main);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: var(--transition);
}
a:hover, a:focus {
    color: var(--primary-dark);
    outline: none;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
ul, ol {
    margin: 0;
    padding: 0;
    list-style: none;
}
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 10px;
    line-height: 1.3;
    font-weight: 700;
}
p {
    margin: 0 0 12px;
}
button, input, select, textarea {
    font-family: inherit;
    font-size: inherit;
    line-height: inherit;
}
.container-custom {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 30px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.btn:focus {
    outline: 3px solid rgba(198,40,40,0.25);
    outline-offset: 2px;
}
.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(198,40,40,0.28);
}
.btn-primary:hover {
    background: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(198,40,40,0.35);
}
.btn-primary:active {
    transform: translateY(0);
}
.btn-accent {
    background: var(--accent);
    color: #2A2A2A;
    box-shadow: 0 4px 14px rgba(255,179,0,0.3);
}
.btn-accent:hover {
    background: var(--accent-dark);
    color: #222;
    transform: translateY(-2px);
}
.btn-outline-light {
    background: transparent;
    border-color: rgba(255,255,255,0.7);
    color: var(--white);
}
.btn-outline-light:hover {
    background: rgba(255,255,255,0.15);
    border-color: var(--white);
    color: var(--white);
    transform: translateY(-2px);
}
.btn-lg {
    padding: 16px 40px;
    font-size: 16px;
}
.btn-sm {
    padding: 9px 20px;
    font-size: 14px;
}

/* ========== 徽章 / 标签 ========== */
.badge {
    display: inline-block;
    padding: 5px 14px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    line-height: 1.4;
    background: rgba(198,40,40,0.1);
    color: var(--primary);
}
.section-tag {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 30px;
    background: rgba(198,40,40,0.08);
    color: var(--primary);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255,255,255,0.18);
    backdrop-filter: blur(8px);
    color: var(--white);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid rgba(255,255,255,0.25);
    margin-bottom: 24px;
}

/* ========== Section 通用 ========== */
.section {
    padding: var(--space-section) 0;
}
.section-head {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 52px;
}
.section-head h2 {
    font-size: 34px;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}
.section-head p {
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 0;
}
.section-head .section-tag {
    margin-bottom: 14px;
}

/* ========== Header / 导航 ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(20,24,36,0.04);
}
.site-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: 74px;
}
.site-logo {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.3px;
    display: flex;
    align-items: center;
    gap: 10px;
    white-space: nowrap;
}
.site-logo .logo-mark {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    font-weight: bold;
    box-shadow: 0 4px 12px rgba(198,40,40,0.25);
}
.site-logo:hover {
    color: var(--text-main);
    opacity: 0.9;
}
.site-nav {
    display: flex;
    align-items: center;
    gap: 4px;
}
.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    border-radius: 40px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    border: 1px solid transparent;
    transition: var(--transition);
}
.nav-link:hover {
    color: var(--primary);
    background: rgba(198,40,40,0.05);
}
.nav-link.active {
    color: var(--primary);
    background: rgba(198,40,40,0.08);
    border-color: rgba(198,40,40,0.18);
    font-weight: 600;
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--border);
    border-radius: 10px;
    width: 42px;
    height: 42px;
    font-size: 18px;
    color: var(--text-main);
    cursor: pointer;
    transition: var(--transition);
}
.menu-toggle:hover {
    background: var(--light-bg);
}

/* ========== Hero ========== */
.hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    padding: 130px 0 150px;
    color: var(--white);
    overflow: hidden;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(20,24,36,0.82) 0%, rgba(20,24,36,0.55) 60%, rgba(20,24,36,0.3) 100%);
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 680px;
}
.hero-content h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 16px;
    font-weight: 800;
    letter-spacing: -0.5px;
}
.hero-content .hero-desc {
    font-size: 18px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 30px;
    line-height: 1.8;
}
.hero-actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 16px;
    margin-bottom: 40px;
}
.hero-media {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-top: 14px;
}
.hero-media .media-btn {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 18px;
    transition: var(--transition);
    cursor: pointer;
}
.hero-media .media-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    transform: scale(1.06);
}
.hero-media span {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}
.hero-stats {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
    margin-top: 14px;
}
.hero-stats .hs-item {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}
.hero-stats .hs-num {
    font-size: 26px;
    font-weight: 800;
    color: var(--white);
    display: block;
    line-height: 1.2;
}

/* ========== 核心特色卡片 ========== */
.feature-section {
    background: var(--white);
    padding: var(--space-section) 0;
}
.feature-card {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    transition: var(--transition);
    height: 100%;
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    opacity: 0;
    transition: var(--transition);
}
.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(198,40,40,0.2);
}
.feature-card:hover::before {
    opacity: 1;
}
.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 18px;
    background: linear-gradient(135deg, rgba(198,40,40,0.12), rgba(255,179,0,0.12));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--primary);
    margin-bottom: 22px;
    transition: var(--transition);
}
.feature-card:hover .feature-icon {
    background: var(--primary);
    color: var(--white);
    transform: scale(1.05);
}
.feature-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}
.feature-card p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.75;
    margin-bottom: 0;
}

/* ========== 分类入口 ========== */
.category-section {
    background: var(--light-bg);
    padding: var(--space-section) 0;
}
.category-card {
    display: block;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--white);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    position: relative;
}
.category-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}
.category-card .cat-img-wrap {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}
.category-card .cat-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}
.category-card:hover .cat-img-wrap img {
    transform: scale(1.06);
}
.category-card .cat-img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 40%, rgba(20,24,36,0.45));
}
.category-card .cat-meta {
    padding: 24px;
    position: relative;
}
.category-card .cat-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 30px;
    background: rgba(198,40,40,0.1);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 10px;
}
.category-card .cat-meta h3 {
    font-size: 20px;
    margin-bottom: 8px;
}
.category-card .cat-meta p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
    line-height: 1.7;
}
.category-card .cat-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
}
.category-card:hover .cat-link {
    gap: 14px;
}

/* ========== 最新资讯 ========== */
.latest-section {
    background: var(--white);
    padding: var(--space-section) 0;
}
.latest-list {
    display: flex;
    flex-wrap: wrap;
}
.latest-item {
    margin-bottom: 28px;
    display: flex;
}
.latest-card {
    display: flex;
    flex-direction: column;
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    width: 100%;
    box-shadow: var(--shadow-sm);
}
.latest-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
    border-color: rgba(198,40,40,0.18);
}
.latest-card .latest-thumb {
    overflow: hidden;
    aspect-ratio: 16 / 9;
}
.latest-card .latest-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.latest-card:hover .latest-thumb img {
    transform: scale(1.05);
}
.latest-card .latest-content {
    padding: 24px 24px 20px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.latest-card .latest-cat {
    display: inline-block;
    align-self: flex-start;
    padding: 4px 14px;
    border-radius: 30px;
    background: rgba(198,40,40,0.08);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
}
.latest-card .latest-content h3 {
    font-size: 17px;
    line-height: 1.5;
    margin-bottom: 10px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 52px;
}
.latest-card .latest-content p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
    flex: 1;
}
.latest-card .latest-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 14px;
    border-top: 1px solid var(--border);
}
.latest-card .latest-time {
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
}
.latest-card .latest-arrow {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--light-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 13px;
    transition: var(--transition);
}
.latest-card:hover .latest-arrow {
    background: var(--primary);
    color: var(--white);
}
.empty-tip {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 16px;
    background: var(--light-bg);
    border-radius: var(--radius);
    width: 100%;
}

/* ========== 数据统计 ========== */
.stats-section {
    background: var(--deep-bg);
    padding: var(--space-section-sm) 0;
    color: var(--white);
    position: relative;
    overflow: hidden;
}
.stats-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(198,40,40,0.18), transparent 70%);
}
.stats-section .section-head {
    margin-bottom: 40px;
}
.stats-section .section-head h2 {
    color: var(--white);
}
.stats-section .section-head p {
    color: rgba(255,255,255,0.7);
}
.stats-section .section-tag {
    background: rgba(255,255,255,0.12);
    color: var(--white);
}
.stat-item {
    text-align: center;
    padding: 30px 16px;
    position: relative;
    z-index: 2;
}
.stat-item .stat-num {
    font-size: 46px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1.2;
    margin-bottom: 6px;
}
.stat-item .stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    letter-spacing: 1px;
}

/* ========== 使用流程 ========== */
.process-section {
    background: var(--light-bg);
    padding: var(--space-section) 0;
}
.process-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px 28px;
    border: 1px solid var(--border);
    height: 100%;
    transition: var(--transition);
    position: relative;
}
.process-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}
.process-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    font-weight: 800;
    font-size: 18px;
    margin-bottom: 20px;
    box-shadow: 0 6px 16px rgba(198,40,40,0.25);
}
.process-card h3 {
    font-size: 18px;
    margin-bottom: 10px;
}
.process-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 0;
}

/* ========== 图文内容区 ========== */
.content-feature-section {
    background: var(--white);
    padding: var(--space-section) 0;
}
.content-feature-block {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap;
}
.content-feature-text {
    flex: 1 1 420px;
}
.content-feature-text .section-tag {
    margin-bottom: 16px;
}
.content-feature-text h2 {
    font-size: 32px;
    margin-bottom: 18px;
}
.content-feature-text p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 22px;
}
.content-feature-list {
    margin-top: 20px;
}
.content-feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
    color: var(--text-main);
    font-size: 15px;
}
.content-feature-list li i {
    color: var(--primary);
    font-size: 16px;
    margin-top: 4px;
}
.content-feature-media {
    flex: 1 1 420px;
    position: relative;
}
.content-feature-media img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}
.content-feature-media::before {
    content: '';
    position: absolute;
    top: -16px;
    right: -16px;
    width: 120px;
    height: 120px;
    border-radius: 24px;
    background: linear-gradient(135deg, var(--accent), var(--primary));
    opacity: 0.15;
    z-index: -1;
}
.media-badge {
    position: absolute;
    bottom: 24px;
    left: 24px;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(8px);
    border-radius: 14px;
    padding: 16px 22px;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    gap: 12px;
}
.media-badge .mb-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}
.media-badge .mb-text {
    font-size: 13px;
    color: var(--text-secondary);
}
.media-badge .mb-text strong {
    font-size: 16px;
    color: var(--text-main);
    display: block;
}

/* ========== FAQ ========== */
.faq-section {
    background: var(--light-bg);
    padding: var(--space-section) 0;
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
}
.faq-item {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px 30px;
    margin-bottom: 16px;
    transition: var(--transition);
    cursor: pointer;
}
.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: rgba(198,40,40,0.15);
}
.faq-item h3 {
    font-size: 17px;
    color: var(--text-main);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.faq-item h3 .faq-icon {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: rgba(198,40,40,0.08);
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    flex-shrink: 0;
}
.faq-item p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.75;
    margin-bottom: 0;
    padding-left: 42px;
}

/* ========== CTA ========== */
.cta-section {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 100px 0;
    color: var(--white);
    text-align: center;
    overflow: hidden;
}
.cta-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(20,24,36,0.85), rgba(198,40,40,0.6));
}
.cta-content {
    position: relative;
    z-index: 2;
    max-width: 640px;
    margin: 0 auto;
}
.cta-content h2 {
    font-size: 36px;
    margin-bottom: 16px;
}
.cta-content p {
    font-size: 17px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 30px;
}
.cta-content .btn {
    font-size: 16px;
}

/* ========== 页脚 ========== */
.site-footer {
    background: var(--deep-bg);
    color: rgba(255,255,255,0.7);
    padding: 70px 0 30px;
    font-size: 14px;
}
.footer-brand .footer-logo {
    font-size: 20px;
    font-weight: 800;
    color: var(--white);
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}
.footer-brand .footer-logo .logo-mark {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    color: var(--white);
}
.footer-brand p {
    color: rgba(255,255,255,0.55);
    line-height: 1.8;
    margin-bottom: 24px;
    max-width: 320px;
}
.footer-col-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 18px;
    position: relative;
    padding-bottom: 12px;
}
.footer-col-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 28px;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
}
.footer-links li {
    margin-bottom: 12px;
}
.footer-links a {
    color: rgba(255,255,255,0.55);
    font-size: 14px;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.footer-links a:hover {
    color: var(--accent);
    padding-left: 4px;
}
.footer-contact li {
    margin-bottom: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    color: rgba(255,255,255,0.55);
}
.footer-contact i {
    color: var(--accent);
    width: 20px;
    text-align: center;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 28px;
    margin-top: 50px;
    text-align: center;
    color: rgba(255,255,255,0.4);
    font-size: 13px;
}
.footer-bottom a {
    color: rgba(255,255,255,0.5);
}
.footer-bottom a:hover {
    color: var(--accent);
}

/* ========== 响应式 ========== */
@media screen and (max-width: 1024px) {
    .site-nav {
        gap: 2px;
    }
    .nav-link {
        padding: 8px 14px;
        font-size: 14px;
    }
    .hero-content h1 {
        font-size: 40px;
    }
    .section-head h2 {
        font-size: 30px;
    }
}

@media screen and (max-width: 768px) {
    :root {
        --space-section: 60px;
    }
    .site-header-inner {
        height: 64px;
    }
    .site-logo {
        font-size: 17px;
    }
    .site-logo .logo-mark {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }
    .site-nav {
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 20px;
        box-shadow: 0 12px 30px rgba(0,0,0,0.1);
        gap: 6px;
        transform: translateY(-120%);
        transition: transform 0.3s ease;
        border-bottom: 1px solid var(--border);
        z-index: 999;
    }
    .site-nav.open {
        transform: translateY(0);
    }
    .nav-link {
        padding: 12px 16px;
        font-size: 15px;
        border-radius: 12px;
        justify-content: center;
    }
    .menu-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }
    .header-actions .btn {
        display: none;
    }
    .hero {
        padding: 90px 0 110px;
    }
    .hero-content h1 {
        font-size: 32px;
    }
    .hero-content .hero-desc {
        font-size: 16px;
    }
    .hero-stats {
        gap: 24px;
    }
    .content-feature-block {
        gap: 40px;
    }
    .stat-item .stat-num {
        font-size: 40px;
    }
    .faq-item {
        padding: 22px;
    }
    .faq-item p {
        padding-left: 0;
    }
    .cta-content h2 {
        font-size: 28px;
    }
    .section-head h2 {
        font-size: 26px;
    }
}

@media screen and (max-width: 520px) {
    .container-custom {
        padding: 0 18px;
    }
    .site-logo {
        font-size: 15px;
    }
    .site-logo .logo-mark {
        width: 30px;
        height: 30px;
        font-size: 13px;
        border-radius: 9px;
    }
    .hero-content h1 {
        font-size: 26px;
    }
    .hero-content .hero-desc {
        font-size: 15px;
    }
    .hero-actions {
        gap: 10px;
    }
    .btn-lg {
        padding: 14px 24px;
        font-size: 15px;
    }
    .btn {
        padding: 11px 22px;
        font-size: 14px;
    }
    .category-card .cat-meta {
        padding: 18px;
    }
    .latest-card .latest-content {
        padding: 18px;
    }
    .process-card {
        padding: 24px 18px;
    }
    .stat-item .stat-num {
        font-size: 32px;
    }
    .stat-item {
        padding: 20px 8px;
    }
    .faq-item h3 {
        font-size: 15px;
        flex-wrap: wrap;
    }
    .cta-content h2 {
        font-size: 24px;
    }
    .footer-bottom {
        font-size: 12px;
        line-height: 1.8;
    }
}

/* roulang page: category1 */
:root{
    --primary:#e6292b;
    --primary-dark:#b71c1c;
    --primary-light:#ff6b6b;
    --accent:#ffb400;
    --dark:#1a1a2e;
    --dark-2:#16213e;
    --bg:#f7f8fc;
    --card-bg:#ffffff;
    --text:#2b2d42;
    --text-light:#6b7280;
    --border:#e5e7eb;
    --radius:16px;
    --radius-sm:10px;
    --shadow:0 4px 20px rgba(0,0,0,.06);
    --shadow-lg:0 12px 40px rgba(0,0,0,.10);
    --transition:all .3s ease;
    --font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,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:1.7;
    color:var(--text);
    background:var(--bg);
    -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit;transition:var(--transition)}
ul,ol{list-style:none}
button,input,select,textarea{font-family:inherit;font-size:inherit}
.container-custom{
    max-width:1200px;
    margin:0 auto;
    padding:0 24px;
    width:100%;
}
.grid-x{display:flex;flex-wrap:wrap}
.grid-margin-x{margin-left:-15px;margin-right:-15px}
.grid-margin-x>.cell{padding-left:15px;padding-right:15px}
.cell{flex:0 0 auto;width:auto;max-width:100%}
.small-12{width:50%;flex-basis:50%}
.medium-6{width:100%;flex-basis:100%}
.large-4{width:100%;flex-basis:100%}
.large-2{width:100%;flex-basis:100%}
.large-3{width:100%;flex-basis:100%}

/* ===== Header ===== */
.site-header{
    position:sticky;
    top:0;
    z-index:1000;
    background:rgba(255,255,255,.96);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
    box-shadow:0 2px 12px rgba(0,0,0,.04);
}
.header-inner{
    display:flex;
    align-items:center;
    justify-content:space-between;
    height:72px;
    gap:24px;
}
.brand-logo{
    display:flex;
    align-items:center;
    gap:10px;
    flex-shrink:0;
    font-weight:800;
    font-size:20px;
    letter-spacing:.5px;
    color:var(--dark);
}
.logo-mark{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:38px;
    height:38px;
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff;
    border-radius:12px;
    font-size:19px;
    font-weight:900;
    box-shadow:0 4px 12px rgba(230,41,43,.28);
}
.brand-logo span:last-child{
    white-space:nowrap;
}
.header-actions{
    display:flex;
    align-items:center;
    gap:14px;
    flex-shrink:0;
}
.search-box{
    display:flex;
    align-items:center;
    background:var(--bg);
    border:1px solid var(--border);
    border-radius:999px;
    padding:6px 14px;
    gap:8px;
    transition:var(--transition);
}
.search-box:focus-within{
    border-color:var(--primary);
    background:#fff;
    box-shadow:0 0 0 3px rgba(230,41,43,.1);
}
.search-box i{color:var(--text-light);font-size:14px}
.search-box input{
    border:none;
    outline:none;
    background:transparent;
    width:140px;
    font-size:14px;
    color:var(--text);
}
.search-box input::placeholder{color:#adb5bd}
.btn-header{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:9px 22px;
    border-radius:999px;
    background:var(--primary);
    color:#fff;
    font-size:14px;
    font-weight:600;
    border:none;
    cursor:pointer;
    transition:var(--transition);
    white-space:nowrap;
}
.btn-header:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 6px 18px rgba(230,41,43,.32);
}

/* ===== Nav ===== */
.nav-wrap{
    background:var(--dark);
    padding:0;
    margin:0;
}
.site-nav{
    display:flex;
    align-items:center;
    gap:8px;
    padding:8px 0;
    overflow-x:auto;
    scrollbar-width:none;
}
.site-nav::-webkit-scrollbar{display:none}
.nav-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:9px 22px;
    border-radius:999px;
    color:rgba(255,255,255,.82);
    font-size:15px;
    font-weight:500;
    white-space:nowrap;
    transition:var(--transition);
    border:1px solid transparent;
}
.nav-link i{font-size:14px;opacity:.8}
.nav-link:hover{
    color:#fff;
    background:rgba(255,255,255,.1);
    border-color:rgba(255,255,255,.15);
}
.nav-link.active{
    background:var(--primary);
    color:#fff;
    box-shadow:0 4px 14px rgba(230,41,43,.35);
}
.nav-link.active:hover{
    background:var(--primary);
    color:#fff;
}

/* ===== Page Banner ===== */
.page-banner{
    position:relative;
    padding:120px 0 90px;
    background:linear-gradient(135deg,var(--dark-2) 0%,var(--dark) 60%,#0f3460 100%);
    overflow:hidden;
    text-align:center;
}
.page-banner::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;
    background-position:center;
    opacity:.22;
    z-index:0;
}
.page-banner::after{
    content:"";
    position:absolute;
    bottom:-2px;
    left:0;
    right:0;
    height:60px;
    background:linear-gradient(to bottom,transparent,var(--bg));
    z-index:1;
}
.banner-content{
    position:relative;
    z-index:2;
    max-width:780px;
    margin:0 auto;
}
.banner-badge{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:8px 20px;
    background:rgba(230,41,43,.18);
    border:1px solid rgba(230,41,43,.4);
    color:#ffb3b3;
    border-radius:999px;
    font-size:14px;
    font-weight:600;
    margin-bottom:24px;
    letter-spacing:1px;
}
.banner-badge i{font-size:14px}
.page-banner h1{
    font-size:clamp(30px,4.2vw,46px);
    font-weight:900;
    color:#fff;
    line-height:1.25;
    margin-bottom:20px;
    letter-spacing:1px;
}
.page-banner h1 span{
    color:var(--accent);
}
.page-banner p{
    color:rgba(255,255,255,.85);
    font-size:17px;
    line-height:1.8;
    margin-bottom:36px;
    max-width:640px;
    margin-left:auto;
    margin-right:auto;
}
.banner-actions{
    display:flex;
    justify-content:center;
    gap:16px;
    flex-wrap:wrap;
}
.btn{
    display:inline-flex;
    align-items:center;
    gap:8px;
    padding:13px 32px;
    border-radius:999px;
    font-size:15px;
    font-weight:600;
    cursor:pointer;
    transition:var(--transition);
    border:none;
    line-height:1.4;
}
.btn-primary{
    background:var(--primary);
    color:#fff;
}
.btn-primary:hover{
    background:var(--primary-dark);
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(230,41,43,.36);
}
.btn-outline-light{
    background:transparent;
    color:#fff;
    border:1.5px solid rgba(255,255,255,.5);
}
.btn-outline-light:hover{
    background:rgba(255,255,255,.1);
    border-color:#fff;
    transform:translateY(-2px);
}
.btn-accent{
    background:var(--accent);
    color:#1a1a2e;
}
.btn-accent:hover{
    background:#ffc526;
    transform:translateY(-2px);
    box-shadow:0 8px 24px rgba(255,180,0,.3);
}

/* ===== Breadcrumb ===== */
.breadcrumb-bar{
    padding:20px 0;
    border-bottom:1px solid var(--border);
    background:#fff;
}
.breadcrumb-list{
    display:flex;
    align-items:center;
    gap:10px;
    flex-wrap:wrap;
    font-size:14px;
    color:var(--text-light);
}
.breadcrumb-list a{
    color:var(--text-light);
}
.breadcrumb-list a:hover{
    color:var(--primary);
}
.breadcrumb-list i{
    font-size:11px;
    color:#c0c4cc;
}

/* ===== Section Base ===== */
.section{
    padding:80px 0;
}
.section-alt{
    background:#fff;
}
.section-dark{
    background:var(--dark);
    color:#fff;
}
.section-head{
    text-align:center;
    max-width:760px;
    margin:0 auto 56px;
}
.section-tag{
    display:inline-flex;
    align-items:center;
    gap:6px;
    padding:6px 16px;
    background:rgba(230,41,43,.08);
    color:var(--primary);
    border-radius:999px;
    font-size:13px;
    font-weight:700;
    letter-spacing:1px;
    margin-bottom:16px;
    text-transform:uppercase;
}
.section-head h2{
    font-size:clamp(26px,3vw,36px);
    font-weight:800;
    color:var(--dark);
    line-height:1.3;
    margin-bottom:14px;
}
.section-head p{
    color:var(--text-light);
    font-size:16px;
    line-height:1.8;
}
.section-dark .section-head h2{
    color:#fff;
}
.section-dark .section-head p{
    color:rgba(255,255,255,.72);
}
.section-dark .section-tag{
    background:rgba(230,41,43,.25);
    color:#ffb3b3;
}

/* ===== Quick Guide Cards ===== */
.quick-card{
    background:var(--card-bg);
    border-radius:var(--radius);
    padding:36px 28px;
    border:1px solid var(--border);
    box-shadow:var(--shadow);
    text-align:center;
    transition:var(--transition);
    height:100%;
}
.quick-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow-lg);
    border-color:rgba(230,41,43,.25);
}
.quick-icon{
    width:64px;
    height:64px;
    margin:0 auto 20px;
    display:flex;
    align-items:center;
    justify-content:center;
    border-radius:20px;
    font-size:26px;
    color:#fff;
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    box-shadow:0 8px 20px rgba(230,41,43,.25);
}
.quick-icon.orange{
    background:linear-gradient(135deg,#ff9f43,#ee5a24);
    box-shadow:0 8px 20px rgba(255,159,67,.25);
}
.quick-icon.blue{
    background:linear-gradient(135deg,#0abde3,#0984e3);
    box-shadow:0 8px 20px rgba(10,189,227,.25);
}
.quick-card h3{
    font-size:19px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:12px;
}
.quick-card p{
    font-size:14.5px;
    color:var(--text-light);
    line-height:1.75;
    margin-bottom:18px;
}
.quick-link{
    display:inline-flex;
    align-items:center;
    gap:6px;
    color:var(--primary);
    font-size:14px;
    font-weight:600;
}
.quick-link:hover{
    gap:10px;
    color:var(--primary-dark);
}

/* ===== Steps ===== */
.steps-wrap{
    position:relative;
}
.step-card{
    background:#fff;
    border-radius:var(--radius);
    padding:32px 28px;
    box-shadow:var(--shadow);
    border:1px solid var(--border);
    position:relative;
    height:100%;
    transition:var(--transition);
}
.step-card:hover{
    box-shadow:var(--shadow-lg);
    transform:translateY(-4px);
}
.step-num{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:44px;
    height:44px;
    border-radius:14px;
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff;
    font-size:19px;
    font-weight:800;
    margin-bottom:20px;
    box-shadow:0 4px 12px rgba(230,41,43,.28);
}
.step-card h3{
    font-size:18px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:12px;
}
.step-card p{
    font-size:14.5px;
    color:var(--text-light);
    line-height:1.8;
}
.step-card .step-tip{
    margin-top:16px;
    padding-top:14px;
    border-top:1px dashed var(--border);
    font-size:13px;
    color:var(--primary);
    display:flex;
    gap:8px;
    align-items:flex-start;
}
.step-card .step-tip i{
    margin-top:3px;
}

/* ===== Download Grid ===== */
.download-card{
    background:#fff;
    border-radius:var(--radius);
    overflow:hidden;
    box-shadow:var(--shadow);
    border:1px solid var(--border);
    transition:var(--transition);
    height:100%;
}
.download-card:hover{
    box-shadow:var(--shadow-lg);
    transform:translateY(-5px);
}
.download-thumb{
    position:relative;
    height:220px;
    overflow:hidden;
}
.download-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.download-card:hover .download-thumb img{
    transform:scale(1.05);
}
.download-thumb::after{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(to bottom,transparent 40%,rgba(0,0,0,.55));
}
.platform-badge{
    position:absolute;
    top:16px;
    right:16px;
    z-index:2;
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:rgba(255,255,255,.94);
    padding:6px 14px;
    border-radius:999px;
    font-size:13px;
    font-weight:700;
    color:var(--dark);
    box-shadow:0 2px 8px rgba(0,0,0,.12);
    backdrop-filter:blur(4px);
}
.platform-badge i{
    color:var(--primary);
}
.download-body{
    padding:26px 24px 24px;
}
.download-body h3{
    font-size:18px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:10px;
}
.download-body p{
    font-size:14px;
    color:var(--text-light);
    line-height:1.75;
    margin-bottom:16px;
}
.download-meta{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-bottom:18px;
}
.meta-tag{
    display:inline-flex;
    align-items:center;
    gap:5px;
    padding:4px 12px;
    background:var(--bg);
    border-radius:6px;
    font-size:12.5px;
    color:var(--text-light);
    border:1px solid var(--border);
}
.meta-tag i{
    color:var(--primary);
    font-size:12px;
}
.btn-download{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:8px;
    width:100%;
    padding:12px 20px;
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
    color:#fff;
    border-radius:12px;
    font-weight:600;
    font-size:15px;
    border:none;
    cursor:pointer;
    transition:var(--transition);
}
.btn-download:hover{
    box-shadow:0 8px 20px rgba(230,41,43,.32);
    transform:translateY(-2px);
}
.btn-download.secondary{
    background:var(--dark);
}
.btn-download.secondary:hover{
    background:#2b2d42;
    box-shadow:0 8px 20px rgba(43,45,66,.25);
}

/* ===== Notice ===== */
.notice-section{
    background:linear-gradient(135deg,#fff8f0,#fff1e6);
    border-radius:var(--radius);
    padding:40px;
    display:flex;
    gap:28px;
    align-items:flex-start;
    border:1px solid #ffe0c2;
}
.notice-icon{
    flex-shrink:0;
    width:48px;
    height:48px;
    border-radius:14px;
    background:linear-gradient(135deg,#ff9f43,#ee5a24);
    display:flex;
    align-items:center;
    justify-content:center;
    color:#fff;
    font-size:20px;
}
.notice-content h3{
    font-size:18px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:8px;
}
.notice-content p{
    font-size:14.5px;
    color:var(--text-light);
    line-height:1.8;
    margin-bottom:8px;
}
.notice-content ul{
    margin-top:10px;
}
.notice-content ul li{
    position:relative;
    padding-left:18px;
    font-size:14px;
    color:var(--text-light);
    margin-bottom:6px;
    line-height:1.6;
}
.notice-content ul li::before{
    content:"\f058";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    position:absolute;
    left:0;
    top:1px;
    color:var(--primary);
    font-size:13px;
}

/* ===== Version Timeline ===== */
.version-list{
    max-width:860px;
    margin:0 auto;
}
.version-item{
    display:flex;
    gap:24px;
    background:#fff;
    border-radius:var(--radius);
    padding:28px 32px;
    box-shadow:var(--shadow);
    border:1px solid var(--border);
    margin-bottom:18px;
    transition:var(--transition);
    position:relative;
    overflow:hidden;
}
.version-item::before{
    content:"";
    position:absolute;
    left:0;
    top:0;
    bottom:0;
    width:4px;
    background:linear-gradient(to bottom,var(--primary),var(--accent));
    opacity:0;
    transition:var(--transition);
}
.version-item:hover{
    box-shadow:var(--shadow-lg);
    transform:translateX(4px);
}
.version-item:hover::before{
    opacity:1;
}
.version-ver{
    flex-shrink:0;
    display:inline-flex;
    align-items:center;
    padding:6px 16px;
    background:rgba(230,41,43,.08);
    color:var(--primary);
    border-radius:8px;
    font-size:15px;
    font-weight:800;
    height:fit-content;
    font-family:'SF Mono','Fira Code',monospace;
}
.version-info{
    flex:1;
}
.version-info h3{
    font-size:16px;
    font-weight:700;
    color:var(--dark);
    margin-bottom:6px;
}
.version-info p{
    font-size:14px;
    color:var(--text-light);
    line-height:1.7;
    margin-bottom:8px;
}
.version-date{
    font-size:12.5px;
    color:#adb5bd;
    display:flex;
    align-items:center;
    gap:6px;
}
.version-date i{
    font-size:11px;
}

/* ===== FAQ ===== */
.faq-wrap{
    max-width:880px;
    margin:0 auto;
}
.faq-item{
    background:#fff;
    border-radius:14px;
    border:1px solid var(--border);
    margin-bottom:14px;
    overflow:hidden;
    box-shadow:0 2px 8px rgba(0,0,0,.04);
    transition:var(--transition);
}
.faq-item:hover{
    border-color:rgba(230,41,43,.25);
    box-shadow:0 4px 16px rgba(0,0,0,.06);
}
.faq-question{
    display:flex;
    align-items:center;
    justify-content:space-between;
    padding:20px 24px;
    cursor:pointer;
    gap:16px;
    background:transparent;
    border:none;
    width:100%;
    text-align:left;
    font-size:16px;
    font-weight:600;
    color:var(--dark);
    transition:var(--transition);
}
.faq-question:hover{
    color:var(--primary);
}
.faq-question .faq-icon{
    flex-shrink:0;
    width:32px;
    height:32px;
    border-radius:50%;
    background:var(--bg);
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:13px;
    color:var(--text-light);
    transition:var(--transition);
}
.faq-item.active .faq-question{
    color:var(--primary);
}
.faq-item.active .faq-icon{
    background:var(--primary);
    color:#fff;
    transform:rotate(180deg);
}
.faq-answer{
    max-height:0;
    overflow:hidden;
    transition:max-height .4s ease;
}
.faq-answer-inner{
    padding:0 24px 22px;
    font-size:14.5px;
    color:var(--text-light);
    line-height:1.85;
    border-top:1px dashed var(--border);
    padding-top:16px;
    margin-left:24px;
    margin-right:24px;
}

/* ===== CTA ===== */
.cta-section{
    background:linear-gradient(135deg,var(--dark-2),var(--dark) 50%,#0f3460);
    border-radius:28px;
    padding:64px 48px;
    text-align:center;
    position:relative;
    overflow:hidden;
}
.cta-section::before{
    content:"";
    position:absolute;
    inset:0;
    background-image:url('/assets/images/backpic/back-2.png');
    background-size:cover;
    background-position:center;
    opacity:.12;
}
.cta-content{
    position:relative;
    z-index:1;
}
.cta-section h2{
    font-size:clamp(24px,3vw,34px);
    font-weight:800;
    color:#fff;
    margin-bottom:16px;
}
.cta-section p{
    color:rgba(255,255,255,.8);
    font-size:16px;
    max-width:560px;
    margin:0 auto 32px;
    line-height:1.8;
}
.cta-buttons{
    display:flex;
    justify-content:center;
    gap:16px;
    flex-wrap:wrap;
}

/* ===== Article Cards ===== */
.article-card{
    background:#fff;
    border-radius:var(--radius);
    overflow:hidden;
    box-shadow:var(--shadow);
    border:1px solid var(--border);
    transition:var(--transition);
    height:100%;
}
.article-card:hover{
    transform:translateY(-6px);
    box-shadow:var(--shadow-lg);
}
.article-thumb{
    height:190px;
    overflow:hidden;
    position:relative;
}
.article-thumb img{
    width:100%;
    height:100%;
    object-fit:cover;
    transition:transform .5s ease;
}
.article-card:hover .article-thumb img{
    transform:scale(1.06);
}
.article-thumb .cat-tag{
    position:absolute;
    bottom:12px;
    left:12px;
    background:rgba(230,41,43,.92);
    color:#fff;
    font-size:12px;
    padding:5px 12px;
    border-radius:6px;
    font-weight:600;
    backdrop-filter:blur(4px);
}
.article-body{
    padding:22px 22px 24px;
}
.article-body h3{
    font-size:16.5px;
    font-weight:700;
    color:var(--dark);
    line-height:1.5;
    margin-bottom:10px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.article-body p{
    font-size:14px;
    color:var(--text-light);
    line-height:1.7;
    margin-bottom:16px;
    display:-webkit-box;
    -webkit-line-clamp:2;
    -webkit-box-orient:vertical;
    overflow:hidden;
}
.article-meta{
    display:flex;
    align-items:center;
    justify-content:space-between;
    font-size:13px;
    color:#adb5bd;
    padding-top:14px;
    border-top:1px solid var(--border);
}
.article-meta span{
    display:inline-flex;
    align-items:center;
    gap:5px;
}
.article-meta i{
    font-size:12px;
}
.read-more{
    color:var(--primary);
    font-weight:600;
    font-size:13.5px;
    display:inline-flex;
    align-items:center;
    gap:4px;
}
.read-more:hover{
    gap:8px;
}

/* ===== Footer ===== */
.site-footer{
    background:var(--dark);
    color:#fff;
    padding:70px 0 30px;
    margin-top:80px;
    position:relative;
}
.site-footer::before{
    content:"";
    position:absolute;
    top:0;
    left:0;
    right:0;
    height:3px;
    background:linear-gradient(90deg,var(--primary),var(--accent),var(--primary));
}
.footer-brand{
    padding-right:20px;
}
.footer-logo{
    display:flex;
    align-items:center;
    gap:10px;
    font-size:20px;
    font-weight:800;
    margin-bottom:12px;
}
.footer-logo .logo-mark{
    background:linear-gradient(135deg,var(--primary),var(--primary-dark));
}
.footer-brand p{
    color:rgba(255,255,255,.6);
    font-size:14px;
    line-height:1.8;
}
.footer-col-title{
    font-size:16px;
    font-weight:700;
    margin-bottom:18px;
    color:#fff;
    position:relative;
    padding-bottom:10px;
}
.footer-col-title::after{
    content:"";
    position:absolute;
    bottom:0;
    left:0;
    width:28px;
    height:3px;
    background:var(--primary);
    border-radius:2px;
}
.footer-links li{
    margin-bottom:10px;
}
.footer-links a{
    color:rgba(255,255,255,.6);
    font-size:14px;
    display:inline-flex;
    align-items:center;
    gap:8px;
    transition:var(--transition);
}
.footer-links a::before{
    content:"\f105";
    font-family:"Font Awesome 6 Free";
    font-weight:900;
    font-size:12px;
    color:var(--primary);
    opacity:.7;
}
.footer-links a:hover{
    color:#fff;
    padding-left:4px;
}
.footer-contact li{
    display:flex;
    align-items:center;
    gap:10px;
    color:rgba(255,255,255,.6);
    font-size:14px;
    margin-bottom:12px;
    line-height:1.5;
}
.footer-contact i{
    color:var(--primary);
    font-size:14px;
    width:18px;
    text-align:center;
}
.footer-bottom{
    border-top:1px solid rgba(255,255,255,.08);
    margin-top:50px;
    padding-top:26px;
    text-align:center;
    color:rgba(255,255,255,.4);
    font-size:13px;
}
.footer-bottom a{
    color:rgba(255,255,255,.6);
}
.footer-bottom a:hover{
    color:var(--primary);
}

/* ===== Responsive ===== */
@media (min-width:640px){
    .medium-6{width:50%;flex-basis:50%}
    .large-2{width:50%;flex-basis:50%}
    .large-3{width:50%;flex-basis:50%}
}
@media (min-width:1024px){
    .large-4{width:33.333%;flex-basis:33.333%}
    .large-2{width:20%;flex-basis:20%}
    .large-3{width:25%;flex-basis:25%}
    .small-12{width:100%;flex-basis:100%}
}
@media (max-width:1023px){
    .section{padding:60px 0}
    .header-inner{flex-wrap:wrap;height:auto;padding:12px 0}
    .brand-logo{order:1}
    .header-actions{order:3;width:100%;justify-content:flex-start}
    .search-box{flex:1;max-width:360px}
    .header-actions .btn-header{margin-left:auto}
}
@media (max-width:767px){
    .container-custom{padding:0 18px}
    .section{padding:48px 0}
    .page-banner{padding:80px 0 60px}
    .section-head{margin-bottom:40px}
    .notice-section{
        flex-direction:column;
        padding:28px 22px;
    }
    .version-item{
        flex-direction:column;
        padding:22px;
        gap:12px;
    }
    .cta-section{
        padding:44px 24px;
        border-radius:20px;
    }
    .faq-answer-inner{
        margin-left:14px;
        margin-right:14px;
    }
    .footer-bottom{
        font-size:12px;
        line-height:1.8;
    }
}
@media (max-width:520px){
    .page-banner h1{
        font-size:26px;
    }
    .banner-actions .btn{
        width:100%;
        justify-content:center;
    }
    .search-box input{
        width:100px;
    }
    .btn-header{
        padding:8px 16px;
        font-size:13px;
    }
    .brand-logo{
        font-size:17px;
    }
    .logo-mark{
        width:32px;
        height:32px;
        font-size:16px;
    }
    .step-card{
        padding:24px 20px;
    }
}

/* roulang page: category2 */
:root {
            --primary: #e63329;
            --primary-dark: #c42018;
            --primary-light: #fff1f0;
            --accent: #f5a623;
            --accent-light: #fff8ec;
            --dark: #1a1d2d;
            --dark-soft: #272b40;
            --text: #2d3350;
            --text-light: #6b718b;
            --bg: #f7f8fc;
            --bg-white: #ffffff;
            --border: #e8eaf2;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 8px rgba(30, 34, 60, .06);
            --shadow-md: 0 8px 30px rgba(30, 34, 60, .08);
            --shadow-lg: 0 16px 48px rgba(30, 34, 60, .12);
            --space-section: 90px;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, 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%;
            height: auto;
            display: block;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color .25s ease;
        }

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

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

        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(30, 34, 60, .04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 24px;
        }

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            letter-spacing: .5px;
            white-space: nowrap;
        }

        .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            box-shadow: 0 4px 14px rgba(230, 51, 41, .3);
        }

        .site-nav-wrap {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
        }

        .nav-link {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            background: transparent;
            border: 1px solid transparent;
            transition: all .25s ease;
        }

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

        .nav-link.active {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(230, 51, 41, .28);
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            background: var(--dark);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            transition: all .25s ease;
        }

        .nav-cta:hover {
            background: var(--primary);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(230, 51, 41, .3);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            color: var(--dark);
            font-size: 22px;
        }

        /* ===== Banner ===== */
        .page-banner {
            position: relative;
            background: linear-gradient(120deg, rgba(26, 29, 45, .92), rgba(39, 43, 64, .78)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
            padding: 90px 0 100px;
            color: #fff;
            overflow: hidden;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            right: -80px;
            top: -80px;
            width: 320px;
            height: 320px;
            background: radial-gradient(circle, rgba(230, 51, 41, .35), transparent 70%);
            border-radius: 50%;
        }

        .banner-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(4px);
            margin-bottom: 20px;
        }

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

        .page-banner h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 1px;
        }

        .page-banner p.lead {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            max-width: 720px;
            margin-bottom: 32px;
        }

        .banner-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-banner {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 30px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
        }

        .btn-banner-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 6px 24px rgba(230, 51, 41, .35);
        }

        .btn-banner-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(230, 51, 41, .4);
        }

        .btn-banner-ghost {
            background: rgba(255, 255, 255, .12);
            color: #fff;
            border: 1px solid rgba(255, 255, 255, .3);
            backdrop-filter: blur(6px);
        }

        .btn-banner-ghost:hover {
            background: rgba(255, 255, 255, .22);
            transform: translateY(-3px);
        }

        .banner-metrics {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, .15);
        }

        .metric-item {
            text-align: left;
        }

        .metric-item strong {
            display: block;
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .metric-item span {
            font-size: 13px;
            color: rgba(255, 255, 255, .7);
        }

        /* ===== Section base ===== */
        .section-block {
            padding: var(--space-section) 0;
        }

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

        .section-head {
            text-align: center;
            max-width: 760px;
            margin: 0 auto 56px;
        }

        .section-head .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 18px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .section-head h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .section-head p {
            font-size: 16px;
            color: var(--text-light);
            line-height: 1.8;
        }

        /* ===== Login Methods ===== */
        .login-methods-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .login-method-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 30px;
            position: relative;
            transition: all .3s ease;
            overflow: hidden;
        }

        .login-method-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: opacity .3s ease;
        }

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

        .login-method-card:hover::before {
            opacity: 1;
        }

        .method-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin-bottom: 22px;
        }

        .method-icon.red {
            background: var(--primary-light);
            color: var(--primary);
        }

        .method-icon.amber {
            background: var(--accent-light);
            color: var(--accent);
        }

        .method-icon.blue {
            background: #eef5ff;
            color: #2f7cf6;
        }

        .login-method-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 10px;
        }

        .login-method-card p {
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .method-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .method-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            background: var(--bg);
            color: var(--text-light);
            padding: 4px 12px;
            border-radius: 999px;
            border: 1px solid var(--border);
        }

        /* ===== Steps section ===== */
        .steps-section {
            background: linear-gradient(135deg, var(--dark) 0%, var(--dark-soft) 100%);
            position: relative;
            overflow: hidden;
        }

        .steps-section::before {
            content: '';
            position: absolute;
            left: -100px;
            bottom: -100px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(230, 51, 41, .25), transparent 70%);
            border-radius: 50%;
        }

        .steps-section .section-head h2 {
            color: #fff;
        }

        .steps-section .section-head p {
            color: rgba(255, 255, 255, .7);
        }

        .steps-section .section-head .section-tag {
            background: rgba(230, 51, 41, .25);
            color: #ffaaa5;
        }

        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            position: relative;
            z-index: 2;
        }

        .step-card {
            background: rgba(255, 255, 255, .06);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-md);
            padding: 36px 26px;
            backdrop-filter: blur(10px);
            transition: all .3s ease;
            position: relative;
        }

        .step-card:hover {
            background: rgba(255, 255, 255, .1);
            transform: translateY(-4px);
            border-color: rgba(255, 255, 255, .2);
        }

        .step-num {
            font-size: 48px;
            font-weight: 800;
            background: linear-gradient(135deg, #ff6b61, #ffb44d);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            margin-bottom: 16px;
        }

        .step-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .step-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, .72);
            line-height: 1.7;
        }

        .step-arrow {
            position: absolute;
            right: -26px;
            top: 50%;
            transform: translateY(-50%);
            color: rgba(255, 255, 255, .4);
            font-size: 18px;
            z-index: 3;
        }

        /* ===== Security Tips ===== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .security-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: center;
            transition: all .3s ease;
        }

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

        .security-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: var(--accent-light);
            color: var(--accent);
        }

        .security-item:nth-child(2) .security-icon {
            background: var(--primary-light);
            color: var(--primary);
        }

        .security-item:nth-child(3) .security-icon {
            background: #eef5ff;
            color: #2f7cf6;
        }

        .security-item:nth-child(4) .security-icon {
            background: #f0fdf4;
            color: #22a55a;
        }

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

        .security-item p {
            font-size: 13px;
            color: var(--text-light);
            line-height: 1.7;
        }

        /* ===== Login Guide content ===== */
        .guide-section {
            background: var(--bg-white);
        }

        .guide-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .guide-image-wrap {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }

        .guide-image-wrap img {
            width: 100%;
            min-height: 380px;
            object-fit: cover;
            transition: transform .5s ease;
        }

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

        .guide-image-overlay {
            position: absolute;
            left: 16px;
            bottom: 16px;
            background: rgba(26, 29, 45, .85);
            backdrop-filter: blur(8px);
            color: #fff;
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .guide-content h2 {
            font-size: 32px;
            font-weight: 800;
            color: var(--dark);
            line-height: 1.3;
            margin-bottom: 14px;
        }

        .guide-content .guide-sub {
            font-size: 16px;
            color: var(--text-light);
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .guide-list {
            list-style: none;
            margin: 0 0 30px;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .guide-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 15px;
            line-height: 1.7;
        }

        .guide-list li i {
            color: var(--primary);
            margin-top: 5px;
            font-size: 16px;
            flex-shrink: 0;
        }

        .guide-points {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 28px;
        }

        .guide-point {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 13px;
            color: var(--text);
            transition: all .25s ease;
        }

        .guide-point:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .btn-solid {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 32px;
            background: var(--primary);
            color: #fff;
            border: none;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all .3s ease;
            box-shadow: 0 4px 16px rgba(230, 51, 41, .28);
        }

        .btn-solid:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(230, 51, 41, .35);
        }

        .btn-solid:focus-visible,
        .btn-banner:focus-visible,
        .nav-cta:focus-visible,
        .nav-link:focus-visible {
            outline: 3px solid rgba(230, 51, 41, .4);
            outline-offset: 2px;
        }

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

        .faq-item {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all .3s ease;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-sm);
            border-color: #d8dbe8;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 22px 28px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: color .25s ease;
        }

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

        .faq-question i {
            color: var(--primary);
            transition: transform .3s ease;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .35s ease;
        }

        .faq-answer-inner {
            padding: 0 28px 22px;
            font-size: 14px;
            color: var(--text-light);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            margin: 0 28px 0;
            padding: 16px 0 22px;
        }

        /* ===== CTA ===== */
        .cta-section {
            position: relative;
            background: linear-gradient(120deg, rgba(230, 51, 41, .95), rgba(245, 166, 35, .9)), url('/assets/images/backpic/back-3.png') center center / cover no-repeat;
            padding: 80px 0;
            color: #fff;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, .9);
            max-width: 640px;
            margin: 0 auto 32px;
            line-height: 1.8;
        }

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

        .btn-cta-white {
            padding: 16px 36px;
            border-radius: 999px;
            background: #fff;
            color: var(--primary);
            font-size: 16px;
            font-weight: 700;
            border: none;
            cursor: pointer;
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 0, 0, .2);
        }

        .btn-cta-line {
            padding: 16px 36px;
            border-radius: 999px;
            background: transparent;
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border: 2px solid rgba(255, 255, 255, .6);
            cursor: pointer;
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-cta-line:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .75);
            padding: 70px 0 0;
        }

        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-brand .logo-mark {
            background: linear-gradient(135deg, var(--primary), var(--accent));
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .6);
            max-width: 340px;
        }

        .footer-col-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-col-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 28px;
            height: 3px;
            border-radius: 2px;
            background: var(--primary);
        }

        .footer-links,
        .footer-contact {
            list-style: none;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-links a,
        .footer-contact li {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            transition: all .25s ease;
        }

        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-contact li i {
            margin-right: 8px;
            color: var(--primary);
            width: 16px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            margin-top: 50px;
            padding: 22px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .7);
        }

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

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

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

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

            .guide-layout {
                gap: 40px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --space-section: 64px;
            }

            .header-inner {
                height: 64px;
            }

            .nav-toggle {
                display: block;
            }

            .site-nav-wrap {
                position: fixed;
                top: 64px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 16px 24px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-lg);
                max-height: 0;
                overflow: hidden;
                transition: max-height .35s ease;
                gap: 8px;
            }

            .site-nav-wrap.open {
                max-height: 500px;
            }

            .site-nav {
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
            }

            .nav-link {
                text-align: center;
                padding: 12px 18px;
            }

            .nav-cta {
                justify-content: center;
            }

            .page-banner {
                padding: 60px 0 70px;
            }

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

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

            .banner-metrics {
                gap: 22px;
                margin-top: 32px;
            }

            .metric-item strong {
                font-size: 22px;
            }

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

            .login-methods-grid,
            .steps-grid,
            .security-grid {
                grid-template-columns: 1fr;
            }

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

            .guide-image-wrap img {
                min-height: 280px;
            }

            .step-arrow {
                display: none;
            }

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

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

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

            .site-logo {
                font-size: 17px;
            }

            .logo-mark {
                width: 34px;
                height: 34px;
                font-size: 17px;
            }

            .page-banner h1 {
                font-size: 25px;
            }

            .banner-metrics {
                gap: 16px;
                flex-direction: column;
            }

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

            .section-head h2 {
                font-size: 24px;
            }

            .login-method-card {
                padding: 28px 22px;
            }

            .security-grid {
                gap: 16px;
            }

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

            .faq-answer-inner {
                padding: 14px 0 18px;
                margin: 0 20px;
            }

            .cta-actions {
                flex-direction: column;
                align-items: center;
            }

            .btn-cta-white,
            .btn-cta-line {
                width: 100%;
                justify-content: center;
            }

            .footer-bottom {
                font-size: 12px;
                padding: 18px 16px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1b2b4e;
            --primary-dark: #142039;
            --primary-light: #2e486f;
            --accent: #ff6b2c;
            --accent-dark: #e8581d;
            --accent-soft: #fff2e9;
            --bg-page: #f4f6fa;
            --bg-card: #ffffff;
            --bg-deep: #0f1928;
            --text-main: #16233a;
            --text-body: #48576b;
            --text-muted: #8896ab;
            --border-light: #e6ebf2;
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --shadow-sm: 0 2px 10px rgba(16, 26, 44, 0.06);
            --shadow-md: 0 8px 30px rgba(16, 26, 44, 0.08);
            --shadow-lg: 0 20px 55px rgba(16, 26, 44, 0.13);
            --container: 1280px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        *,
        *::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", "Helvetica Neue", Arial, sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--bg-page);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

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

        .text-muted {
            color: var(--text-muted);
        }

        .empty-hint {
            text-align: center;
            color: var(--text-muted);
            padding: 20px 0;
            font-size: 14px;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            cursor: pointer;
            transition: var(--transition);
            border: 2px solid transparent;
            text-align: center;
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--accent);
            color: #fff;
            box-shadow: 0 6px 20px rgba(255, 107, 44, 0.3);
        }

        .btn-primary:hover {
            background: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 107, 44, 0.38);
        }

        .btn-outline {
            background: transparent;
            border-color: rgba(27, 43, 78, 0.28);
            color: var(--primary);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            background: rgba(27, 43, 78, 0.05);
        }

        .btn-light {
            background: #fff;
            color: var(--primary-dark);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 40px rgba(0, 0, 0, 0.22);
        }

        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
        }

        .btn-block {
            display: flex;
            width: 100%;
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 1px 12px rgba(16, 26, 44, 0.05);
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .logo-mark {
            width: 42px;
            height: 42px;
            border-radius: 13px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 19px;
            letter-spacing: -1px;
            box-shadow: 0 6px 18px rgba(27, 43, 78, 0.28);
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.2px;
            white-space: nowrap;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .nav-link {
            padding: 9px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            color: var(--text-body);
            transition: var(--transition);
            white-space: nowrap;
        }

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

        .nav-link.active {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 5px 18px rgba(27, 43, 78, 0.3);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            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;
            background: var(--bg-page);
            cursor: pointer;
        }

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

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

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

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

        /* ===== Article Hero ===== */
        .article-hero {
            position: relative;
            background-size: cover;
            background-position: center center;
            padding: 80px 0 64px;
            color: #fff;
            isolation: isolate;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(95deg, rgba(12, 20, 38, 0.94) 0%, rgba(15, 27, 48, 0.82) 45%, rgba(20, 35, 60, 0.52) 100%);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.72);
            margin-bottom: 22px;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb .sep {
            opacity: 0.5;
        }

        .article-hero h1 {
            font-size: 36px;
            font-weight: 800;
            line-height: 1.3;
            max-width: 760px;
            margin-bottom: 16px;
            letter-spacing: 0.3px;
            word-break: break-word;
        }

        .article-desc {
            font-size: 16px;
            line-height: 1.85;
            max-width: 640px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 26px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .meta-badge {
            display: inline-flex;
            align-items: center;
            gap: 7px;
            padding: 7px 16px;
            border-radius: 999px;
            background: rgba(255, 255, 255, 0.14);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            font-weight: 500;
            color: #fff;
        }

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

        /* ===== Article Body ===== */
        .article-body-section {
            padding: 70px 0;
            background: var(--bg-page);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 370px;
            gap: 32px;
            align-items: start;
        }

        .article-main {
            min-width: 0;
        }

        .article-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-md);
            padding: 48px;
            border: 1px solid rgba(230, 235, 242, 0.7);
        }

        .article-content {
            font-size: 16px;
            line-height: 2;
            color: var(--text-body);
            word-wrap: break-word;
        }

        .article-content h2 {
            font-size: 24px;
            color: var(--text-main);
            font-weight: 700;
            margin: 38px 0 16px;
            line-height: 1.4;
            padding-left: 16px;
            border-left: 4px solid var(--accent);
            border-radius: 0 4px 4px 0;
        }

        .article-content h3 {
            font-size: 19px;
            color: var(--text-main);
            margin: 28px 0 12px;
            line-height: 1.5;
            font-weight: 650;
        }

        .article-content h4 {
            font-size: 16px;
            color: var(--text-main);
            margin: 20px 0 10px;
            font-weight: 650;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            box-shadow: var(--shadow-sm);
        }

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            background: var(--accent-soft);
            border-left: 4px solid var(--accent);
            padding: 18px 22px;
            border-radius: 0 14px 14px 0;
            margin: 24px 0;
            color: var(--text-main);
            font-size: 15px;
            font-style: normal;
        }

        .article-content blockquote p {
            margin: 0;
        }

        .article-content a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(255, 107, 44, 0.35);
        }

        .article-content a:hover {
            color: var(--accent-dark);
            text-decoration-color: var(--accent);
        }

        .article-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: var(--radius-sm);
            overflow: hidden;
            font-size: 14px;
        }

        .article-content table th,
        .article-content table td {
            padding: 12px 16px;
            border: 1px solid var(--border-light);
            text-align: left;
        }

        .article-content table th {
            background: var(--bg-page);
            color: var(--text-main);
            font-weight: 600;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .article-not-found i {
            font-size: 52px;
            color: var(--accent);
            margin-bottom: 20px;
            display: inline-block;
        }

        .article-not-found h3 {
            font-size: 24px;
            color: var(--text-main);
            margin-bottom: 10px;
            font-weight: 700;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 28px;
            font-size: 15px;
        }

        /* ===== Article Source ===== */
        .article-source {
            margin-top: 36px;
            padding: 20px 24px;
            background: var(--bg-page);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }

        .source-line {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 560px;
        }

        .source-line i {
            color: var(--accent);
            margin-top: 3px;
        }

        .share-line {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .share-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-right: 4px;
        }

        .share-btn {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: #fff;
            color: var(--text-body);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            cursor: pointer;
        }

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

        /* ===== Sidebar ===== */
        .article-side {
            position: sticky;
            top: 92px;
            display: flex;
            flex-direction: column;
            gap: 22px;
            min-width: 0;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 26px;
            border: 1px solid rgba(230, 235, 242, 0.7);
        }

        .sidebar-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 18px;
            display: flex;
            align-items: center;
            gap: 9px;
        }

        .sidebar-title::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border-light);
        }

        .sidebar-title i {
            color: var(--accent);
        }

        .category-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .category-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 14px;
            border-radius: 12px;
            transition: var(--transition);
            border: 1px solid transparent;
        }

        .category-item:hover {
            background: var(--accent-soft);
            border-color: rgba(255, 107, 44, 0.18);
            transform: translateX(4px);
        }

        .cat-icon {
            width: 38px;
            height: 38px;
            background: var(--primary);
            color: #fff;
            border-radius: 11px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            flex-shrink: 0;
            box-shadow: 0 4px 12px rgba(27, 43, 78, 0.2);
        }

        .cat-name {
            flex: 1;
            font-weight: 600;
            font-size: 14px;
            color: var(--text-main);
        }

        .cat-arrow {
            color: var(--text-muted);
            font-size: 12px;
            transition: var(--transition);
        }

        .category-item:hover .cat-arrow {
            color: var(--accent);
            transform: translateX(3px);
        }

        .latest-list {
            list-style: none;
        }

        .latest-list li {
            border-bottom: 1px solid var(--border-light);
            padding: 10px 0;
        }

        .latest-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .latest-list li:first-child {
            padding-top: 0;
        }

        .latest-list a {
            display: block;
            transition: var(--transition);
        }

        .latest-title {
            display: block;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            line-height: 1.55;
            margin-bottom: 3px;
            transition: var(--transition);
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .latest-list a:hover .latest-title {
            color: var(--accent);
        }

        .latest-date {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .latest-date i {
            font-size: 11px;
        }

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

        .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 7px 14px;
            background: var(--bg-page);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-body);
            transition: var(--transition);
        }

        .tag-pill:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(27, 43, 78, 0.25);
        }

        /* ===== Section Heading ===== */
        .section-head {
            text-align: center;
            max-width: 620px;
            margin: 0 auto 44px;
        }

        .section-updated {
            display: inline-block;
            padding: 6px 18px;
            background: var(--accent-soft);
            color: var(--accent);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .section-head h2 {
            font-size: 30px;
            font-weight: 800;
            color: var(--text-main);
            margin-bottom: 12px;
            letter-spacing: 0.2px;
            line-height: 1.35;
        }

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

        /* ===== Related Section ===== */
        .related-section {
            padding: 80px 0;
            background: #fff;
            border-top: 1px solid var(--border-light);
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 26px;
        }

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

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

        .related-img {
            height: 185px;
            overflow: hidden;
            position: relative;
        }

        .related-img::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 55%, rgba(15, 25, 40, 0.35) 100%);
        }

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

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

        .related-body {
            padding: 20px 22px 22px;
        }

        .related-cat {
            display: inline-block;
            padding: 4px 12px;
            background: var(--accent-soft);
            color: var(--accent);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .related-body h3 {
            font-size: 17px;
            font-weight: 650;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .related-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        /* ===== FAQ Section ===== */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-page);
        }

        .faq-list {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 14px;
            overflow: hidden;
            border: 1px solid rgba(230, 235, 242, 0.7);
            transition: var(--transition);
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-item.active {
            border-color: rgba(255, 107, 44, 0.25);
            box-shadow: 0 8px 28px rgba(16, 26, 44, 0.08);
        }

        .faq-question {
            width: 100%;
            padding: 20px 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
            gap: 16px;
            transition: var(--transition);
            background: transparent;
        }

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

        .faq-question i {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-soft);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            transition: transform 0.35s ease;
        }

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

        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            color: var(--text-body);
            line-height: 1.85;
            font-size: 15px;
        }

        .faq-item.active .faq-answer {
            display: block;
            animation: fadeInAnswer 0.35s ease;
        }

        @keyframes fadeInAnswer {
            from {
                opacity: 0;
                transform: translateY(-8px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 84px 0;
            background: var(--bg-deep);
            position: relative;
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-3.png');
            background-size: cover;
            background-position: center;
            isolation: isolate;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            z-index: -1;
            background: linear-gradient(120deg, rgba(12, 20, 38, 0.96), rgba(16, 30, 55, 0.82));
        }

        .cta-inner {
            text-align: center;
            color: #fff;
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-inner .section-updated {
            background: rgba(255, 107, 44, 0.2);
            color: #ff9a6c;
        }

        .cta-inner h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }

        .cta-inner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.78);
            margin-bottom: 32px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f1728;
            color: rgba(255, 255, 255, 0.72);
            padding: 64px 0 0;
            font-size: 14px;
        }

        .site-footer .footer-brand {
            margin-bottom: 8px;
        }

        .footer-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }

        .footer-logo .logo-mark {
            background: linear-gradient(135deg, #ff6b2c, #e8581d);
            box-shadow: 0 6px 18px rgba(255, 107, 44, 0.3);
        }

        .footer-logo span:last-child {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 320px;
            margin-bottom: 0;
        }

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

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: rgba(255, 255, 255, 0.6);
            transition: var(--transition);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

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

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            color: rgba(255, 255, 255, 0.6);
            font-size: 13px;
        }

        .footer-contact i {
            width: 30px;
            height: 30px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            color: var(--accent);
        }

        .footer-bottom {
            margin-top: 44px;
            padding: 22px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.07);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.5);
        }

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

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr 320px;
                gap: 24px;
            }

            .article-card {
                padding: 38px;
            }

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

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

            .nav-link {
                padding: 8px 14px;
                font-size: 13px;
            }
        }

        @media (max-width: 900px) {
            .nav-toggle {
                display: flex;
            }

            .site-nav {
                position: fixed;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 14px 20px 20px;
                box-shadow: 0 20px 40px rgba(16, 26, 44, 0.12);
                border-bottom: 1px solid var(--border-light);
                transform: translateY(-16px);
                opacity: 0;
                pointer-events: none;
                transition: var(--transition);
                gap: 4px;
                border-radius: 0 0 22px 22px;
            }

            .site-nav.open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }

            .site-nav .nav-link {
                padding: 13px 20px;
                font-size: 15px;
                border-radius: 12px;
                text-align: center;
            }

            .site-nav .nav-link.active {
                box-shadow: none;
            }

            .header-actions .btn {
                display: none;
            }

            .article-hero {
                padding: 68px 0 54px;
            }

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

            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-side {
                position: static;
                flex-direction: row;
                flex-wrap: wrap;
            }

            .sidebar-card {
                flex: 1 1 260px;
            }

            .article-card {
                padding: 34px;
            }

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

        @media (max-width: 640px) {
            .container-custom {
                padding: 0 18px;
            }

            .header-inner {
                height: 64px;
            }

            .logo-mark {
                width: 36px;
                height: 36px;
                font-size: 16px;
                border-radius: 10px;
            }

            .logo-text {
                font-size: 15px;
            }

            .article-hero {
                padding: 54px 0 44px;
            }

            .article-hero h1 {
                font-size: 22px;
            }

            .article-desc {
                font-size: 14px;
            }

            .article-meta {
                gap: 8px;
            }

            .meta-badge {
                padding: 6px 12px;
                font-size: 12px;
            }

            .article-body-section {
                padding: 48px 0;
            }

            .article-card {
                padding: 24px 20px;
                border-radius: 16px;
            }

            .article-content {
                font-size: 15px;
                line-height: 1.9;
            }

            .article-content h2 {
                font-size: 20px;
                margin: 28px 0 14px;
            }

            .article-content h3 {
                font-size: 17px;
            }

            .article-source {
                padding: 16px 16px;
                flex-direction: column;
                align-items: flex-start;
            }

            .share-line {
                width: 100%;
                justify-content: flex-end;
            }

            .related-section {
                padding: 56px 0;
            }

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

            .related-img {
                height: 170px;
            }

            .section-head h2 {
                font-size: 24px;
            }

            .faq-section {
                padding: 56px 0;
            }

            .faq-question {
                padding: 17px 18px;
                font-size: 15px;
            }

            .faq-answer {
                padding: 0 18px 20px;
                font-size: 14px;
            }

            .cta-section {
                padding: 60px 0;
            }

            .cta-inner h2 {
                font-size: 22px;
            }

            .cta-inner p {
                font-size: 14px;
            }

            .cta-buttons {
                flex-direction: column;
                align-items: stretch;
            }

            .site-footer {
                padding-top: 48px;
            }

            .footer-bottom {
                margin-top: 32px;
            }
        }

        @media (max-width: 480px) {
            .logo-text {
                max-width: 150px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }

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

            .article-content {
                font-size: 14.5px;
            }

            .sidebar-card {
                flex: 1 1 100%;
                padding: 20px;
            }

            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
  --primary: #1e5eff;
  --primary-dark: #0f3fbf;
  --primary-light: #e8efff;
  --accent: #ff6b35;
  --accent-light: #fff1eb;
  --bg-body: #f5f7fb;
  --bg-white: #ffffff;
  --bg-dark: #0d1b2a;
  --bg-dark-2: #14273a;
  --text-main: #1c2434;
  --text-body: #3d4758;
  --text-weak: #7a8499;
  --border-light: #e4e9f2;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-sm: 10px;
  --shadow-sm: 0 2px 10px rgba(15, 40, 80, 0.06);
  --shadow-md: 0 8px 30px rgba(15, 40, 80, 0.1);
  --shadow-lg: 0 16px 48px rgba(15, 40, 80, 0.14);
  --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  background-color: var(--bg-body);
  color: var(--text-body);
  line-height: 1.7;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; display: block; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { color: var(--text-main); font-weight: 700; line-height: 1.3; margin: 0 0 12px; }
p { margin: 0 0 16px; }
input, button, textarea { font-family: inherit; }

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

/* ---------- Header ---------- */
.site-header {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 200;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 20px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.3px;
  white-space: nowrap;
}
.logo:hover { color: var(--primary); }
.logo-mark {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary) 0%, #5a9bff 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  color: #fff;
  box-shadow: 0 4px 14px rgba(30, 94, 255, 0.35);
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #f0f3f9;
  border-radius: 40px;
  padding: 5px;
  overflow-x: auto;
  scrollbar-width: none;
}
.site-nav::-webkit-scrollbar { display: none; }
.nav-link {
  display: inline-block;
  padding: 9px 20px;
  border-radius: 30px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-body);
  white-space: nowrap;
  transition: var(--transition);
}
.nav-link:hover {
  color: var(--primary);
  background: rgba(30, 94, 255, 0.08);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 14px rgba(30, 94, 255, 0.34);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-box {
  display: flex;
  align-items: center;
  background: #f0f3f9;
  border-radius: 30px;
  padding: 6px 14px;
  gap: 8px;
  border: 1px solid transparent;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--primary);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(30, 94, 255, 0.12);
}
.search-box i { color: var(--text-weak); font-size: 14px; }
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  width: 120px;
  color: var(--text-main);
}
.search-box input::placeholder { color: var(--text-weak); }
.btn-header {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 30px;
  padding: 9px 22px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(30, 94, 255, 0.3);
}
.btn-header:hover { background: var(--primary-dark); transform: translateY(-2px); color: #fff; }
.btn-header:focus, .nav-link:focus, .search-box:focus-within { outline: none; }
.nav-toggle {
  display: none;
  background: #f0f3f9;
  border: none;
  border-radius: 10px;
  width: 44px;
  height: 44px;
  font-size: 18px;
  color: var(--text-main);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}
.nav-toggle:hover { background: var(--primary-light); color: var(--primary); }

/* ---------- Page Banner / Hero ---------- */
.page-banner {
  min-height: 300px;
  background-image: linear-gradient(120deg, rgba(13, 27, 42, 0.92) 0%, rgba(20, 39, 58, 0.78) 60%, rgba(30, 94, 255, 0.55) 100%), url('/assets/images/backpic/back-3.png');
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  position: relative;
  padding: 80px 0;
}
.banner-content {
  max-width: 820px;
}
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  border-radius: 30px;
  padding: 6px 18px;
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}
.banner-content h1 {
  color: #fff;
  font-size: 42px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 16px;
  line-height: 1.2;
}
.banner-content p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 17px;
  max-width: 640px;
  margin-bottom: 28px;
}
.banner-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: rgba(255, 255, 255, 0.7);
  font-size: 14px;
}
.banner-meta span { display: inline-flex; align-items: center; gap: 6px; }
.banner-meta i { color: #6f9bff; }

/* ---------- Breadcrumb ---------- */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border-light);
  padding: 14px 0;
  font-size: 13px;
}
.breadcrumb-bar a { color: var(--text-weak); }
.breadcrumb-bar a:hover { color: var(--primary); }
.breadcrumb-bar .current { color: var(--text-main); font-weight: 600; }
.breadcrumb-bar i { font-size: 10px; color: #c1c9d8; margin: 0 8px; }

/* ---------- Section base ---------- */
.section-block { padding: 80px 0; }
.section-dark { background: var(--bg-dark); }
.section-light { background: #fff; }
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}
.section-eyebrow {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: 30px;
  padding: 5px 18px;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
}
.section-header h2 {
  font-size: 34px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}
.section-header p { color: var(--text-weak); font-size: 16px; }
.section-header.light h2 { color: #fff; }
.section-header.light p { color: rgba(255, 255, 255, 0.7); }

/* ---------- Principle cards ---------- */
.principle-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 36px 28px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}
.principle-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(30, 94, 255, 0.3);
}
.principle-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #5a9bff);
  opacity: 0;
  transition: var(--transition);
}
.principle-card:hover::before { opacity: 1; }
.principle-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  transition: var(--transition);
}
.principle-card:hover .principle-icon {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 8px 20px rgba(30, 94, 255, 0.3);
}
.principle-card h3 { font-size: 18px; margin-bottom: 10px; }
.principle-card p { font-size: 14px; color: var(--text-weak); margin-bottom: 0; line-height: 1.7; }

/* ---------- Play mode cards ---------- */
.mode-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.mode-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
}
.mode-cover {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.mode-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.mode-card:hover .mode-cover img { transform: scale(1.06); }
.mode-cover .cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(13, 27, 42, 0) 30%, rgba(13, 27, 42, 0.65) 100%);
}
.mode-badge {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 5px 14px;
  border-radius: 30px;
  z-index: 2;
  backdrop-filter: blur(6px);
}
.mode-body { padding: 26px 24px 28px; flex: 1; display: flex; flex-direction: column; }
.mode-body h3 { font-size: 18px; margin-bottom: 8px; }
.mode-body p { font-size: 14px; color: var(--text-weak); margin-bottom: 16px; flex: 1; }
.mode-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.mode-link:hover { gap: 12px; }

/* ---------- Steps timeline ---------- */
.steps-section { background: #fff; }
.steps-timeline {
  position: relative;
  padding: 40px 0;
}
.steps-timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary-light), var(--primary), var(--primary-light));
  transform: translateX(-50%);
  border-radius: 10px;
}
.step-item {
  position: relative;
  width: 50%;
  padding: 20px 50px;
}
.step-item:nth-child(odd) { left: 0; text-align: right; }
.step-item:nth-child(even) { left: 50%; text-align: left; }
.step-dot {
  position: absolute;
  top: 34px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 0 0 6px var(--primary-light);
  z-index: 2;
}
.step-item:nth-child(odd) .step-dot { right: -22px; }
.step-item:nth-child(even) .step-dot { left: -22px; }
.step-card {
  background: var(--bg-body);
  border-radius: var(--radius-md);
  padding: 26px 30px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  text-align: left;
}
.step-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }
.step-card h3 { font-size: 17px; margin-bottom: 8px; }
.step-card p { font-size: 14px; color: var(--text-weak); margin-bottom: 0; }
.step-card .step-num { color: var(--primary); font-size: 13px; font-weight: 700; letter-spacing: 0.5px; margin-bottom: 6px; display: block; }

/* ---------- Article list ---------- */
.article-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  margin-bottom: 20px;
  padding: 20px;
}
.article-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.article-cover {
  width: 160px;
  min-width: 160px;
  height: 120px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin: 0;
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.article-card:hover .article-cover img { transform: scale(1.08); }
.article-content { flex: 1; display: flex; flex-direction: column; justify-content: center; }
.article-tag {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  border-radius: 20px;
  padding: 3px 12px;
  margin-bottom: 8px;
  width: fit-content;
}
.article-content h3 { font-size: 17px; margin-bottom: 6px; }
.article-content h3 a { color: var(--text-main); }
.article-content h3 a:hover { color: var(--primary); }
.article-content p { font-size: 14px; color: var(--text-weak); margin-bottom: 8px; }
.article-meta {
  display: flex;
  gap: 18px;
  font-size: 13px;
  color: var(--text-weak);
}
.article-meta span { display: inline-flex; align-items: center; gap: 5px; }
.article-meta i { color: #b0b9cb; }

/* ---------- Data band ---------- */
.data-band {
  background: linear-gradient(135deg, var(--bg-dark) 0%, var(--bg-dark-2) 100%);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}
.data-band::after {
  content: "";
  position: absolute;
  right: -80px;
  top: -80px;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  background: rgba(30, 94, 255, 0.25);
  filter: blur(60px);
}
.data-grid { position: relative; z-index: 2; }
.data-item { text-align: center; padding: 20px 12px; }
.data-item .num {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}
.data-item .label { color: rgba(255, 255, 255, 0.65); font-size: 14px; margin-top: 6px; }
.data-item .num i { color: #6f9bff; font-size: 28px; margin-right: 4px; }

/* ---------- FAQ ---------- */
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.faq-item:hover { border-color: rgba(30, 94, 255, 0.35); box-shadow: var(--shadow-md); }
.faq-title {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}
.faq-title:hover { color: var(--primary); }
.faq-title .fa-chevron-down { color: var(--primary); font-size: 14px; transition: transform 0.35s ease; }
.faq-item.open .fa-chevron-down { transform: rotate(180deg); }
.faq-body {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
}
.faq-item.open .faq-body { max-height: 300px; padding: 0 24px 22px; }
.faq-body p { font-size: 14px; color: var(--text-body); margin: 0; line-height: 1.8; }

/* ---------- CTA ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, #4a89ff 50%, #5a9bff 100%);
  border-radius: var(--radius-lg);
  padding: 68px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: "";
  position: absolute;
  left: -40px;
  bottom: -100px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  border: 30px solid rgba(255, 255, 255, 0.08);
}
.cta-section h2 { color: #fff; font-size: 32px; font-weight: 800; margin-bottom: 12px; position: relative; z-index: 2; }
.cta-section p { color: rgba(255, 255, 255, 0.9); font-size: 16px; margin-bottom: 28px; position: relative; z-index: 2; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; position: relative; z-index: 2; }
.btn-white {
  background: #fff;
  color: var(--primary);
  border: none;
  border-radius: 30px;
  padding: 13px 36px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.btn-white:hover { background: var(--primary-light); color: var(--primary-dark); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18); }
.btn-outline-light {
  background: transparent;
  color: #fff;
  border: 2px solid rgba(255, 255, 255, 0.7);
  border-radius: 30px;
  padding: 11px 34px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; transform: translateY(-2px); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.72);
  padding: 70px 0 0;
  margin-top: 80px;
}
.footer-brand { padding-right: 40px; }
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 19px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 18px;
}
.footer-logo .logo-mark {
  width: 38px;
  height: 38px;
  font-size: 18px;
}
.footer-brand p { font-size: 14px; color: rgba(255, 255, 255, 0.65); line-height: 1.8; margin-bottom: 0; }
.footer-col-title {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 28px;
  height: 3px;
  background: var(--primary);
  border-radius: 3px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  color: rgba(255, 255, 255, 0.65);
  font-size: 14px;
  transition: var(--transition);
}
.footer-links a:hover { color: #fff; padding-left: 6px; }
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 12px;
  color: rgba(255, 255, 255, 0.65);
}
.footer-contact i { color: var(--primary); width: 18px; text-align: center; }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 50px;
  padding: 22px 0;
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.45);
}
.footer-bottom a { color: rgba(255, 255, 255, 0.6); }
.footer-bottom a:hover { color: #fff; }

/* ---------- Responsive ---------- */
@media screen and (max-width: 1024px) {
  .banner-content h1 { font-size: 36px; }
  .section-block { padding: 64px 0; }
  .section-header h2 { font-size: 30px; }
  .footer-brand { padding-right: 20px; }
}

@media screen and (max-width: 768px) {
  .header-inner { min-height: 64px; gap: 10px; }
  .site-nav {
    position: absolute;
    top: 70px;
    left: 16px;
    right: 16px;
    background: #fff;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    padding: 12px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    border: 1px solid var(--border-light);
    z-index: 150;
  }
  .site-nav.open { display: flex; }
  .nav-link { border-radius: 12px; padding: 12px 18px; text-align: center; }
  .nav-toggle { display: inline-flex; }
  .search-box { display: none; }
  .btn-header { display: none; }

  .page-banner { min-height: 260px; padding: 60px 0; }
  .banner-content h1 { font-size: 30px; }
  .banner-content p { font-size: 15px; }
  .section-block { padding: 52px 0; }
  .section-header { margin-bottom: 40px; }
  .section-header h2 { font-size: 26px; }

  .steps-timeline::before { left: 22px; }
  .step-item, .step-item:nth-child(odd), .step-item:nth-child(even) {
    width: 100%;
    left: 0;
    text-align: left;
    padding: 16px 16px 16px 56px;
  }
  .step-item:nth-child(odd) .step-dot,
  .step-item:nth-child(even) .step-dot { left: 6px; right: auto; }

  .article-card { flex-direction: column; padding: 16px; }
  .article-cover { width: 100%; min-width: 0; height: 180px; }

  .data-band { padding: 36px 24px; }
  .data-item .num { font-size: 30px; }

  .cta-section { padding: 44px 24px; }
  .cta-section h2 { font-size: 26px; }

  .site-footer { padding-top: 50px; margin-top: 60px; }
  .footer-brand { margin-bottom: 30px; }
}

@media screen and (max-width: 520px) {
  .container-custom { padding: 0 16px; }
  .banner-content h1 { font-size: 26px; }
  .banner-meta { flex-direction: column; gap: 10px; }
  .mode-cover { height: 160px; }
  .step-card { padding: 20px; }
  .faq-title { padding: 18px; font-size: 15px; }
  .faq-body { padding: 0 18px; }
  .faq-item.open .faq-body { padding: 0 18px 18px; }
  .cta-buttons { flex-direction: column; }
  .btn-white, .btn-outline-light { text-align: center; width: 100%; }
}