/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0F4C81;
  --primary-dark: #0A3A64;
  --primary-light: #EAF1F7;
  --secondary: #00A67E;
  --secondary-dark: #008A68;
  --secondary-light: #E6F7F2;
  --bg: #F7F9FC;
  --bg-dark: #0B1D2E;
  --text: #1A2433;
  --text-light: #5A6B7B;
  --text-mute: #8A9BAE;
  --border: #E3E9F0;
  --white: #FFFFFF;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 24px rgba(15, 76, 129, 0.07);
  --shadow-hover: 0 12px 36px rgba(15, 76, 129, 0.13);
  --transition: all 0.3s ease;
}
/* ===== 基础 Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 96px 0; }
.section-alt { background: var(--white); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head .section-tag { display: inline-block; font-size: 13px; font-weight: 600; color: var(--secondary); background: var(--secondary-light); border-radius: 20px; padding: 6px 18px; margin-bottom: 16px; letter-spacing: 0.06em; text-transform: uppercase; }
.section-head h2 { font-size: 36px; line-height: 1.3; font-weight: 700; color: var(--text); margin-bottom: 16px; letter-spacing: -0.02em; }
.section-head p { font-size: 16px; color: var(--text-light); }
/* ===== 按钮 ===== */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 50px; font-size: 15px; font-weight: 600; border: 0; transition: var(--transition); text-decoration: none; line-height: 1.2; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 14px rgba(15, 76, 129, 0.25); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(15, 76, 129, 0.35); }
.btn-secondary { background: var(--secondary); color: var(--white); box-shadow: 0 4px 14px rgba(0, 166, 126, 0.25); }
.btn-secondary:hover { background: var(--secondary-dark); color: var(--white); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
.btn-light { background: var(--white); color: var(--primary); box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1); }
.btn-light:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 14px; }
/* ===== Header / 导航 ===== */
.site-header { position: sticky; top: 0; z-index: 999; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.logo-badge { background: var(--primary); color: #fff; font-weight: 700; font-size: 16px; padding: 5px 12px; border-radius: 8px; letter-spacing: 0.02em; }
.logo-text { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: 0.02em; white-space: nowrap; }
.main-nav { display: flex; gap: 36px; align-items: center; margin-left: auto; margin-right: 32px; }
.nav-link { font-size: 15px; color: var(--text-light); text-decoration: none; font-weight: 500; position: relative; padding: 8px 0; transition: var(--transition); }
.nav-link.active, .nav-link:hover { color: var(--primary); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--secondary); border-radius: 3px; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; background: none; border: 0; font-size: 24px; color: var(--text); padding: 8px; border-radius: 8px; transition: var(--transition); }
.nav-toggle:hover { background: var(--primary-light); color: var(--primary); }
/* ===== Hero ===== */
.hero { position: relative; min-height: 640px; display: flex; align-items: center; background: linear-gradient(135deg, rgba(10, 30, 52, 0.92), rgba(15, 76, 129, 0.82)), url('/assets/images/backpic/back-1.png') center/cover no-repeat; color: var(--white); padding: 120px 0; }
.hero-content { max-width: 760px; }
.hero-badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(255, 255, 255, 0.12); border: 1px solid rgba(255, 255, 255, 0.25); border-radius: 40px; padding: 8px 20px; font-size: 14px; font-weight: 500; margin-bottom: 24px; backdrop-filter: blur(8px); }
.hero-badge i { color: var(--secondary); }
.hero h1 { font-size: 56px; line-height: 1.2; font-weight: 800; letter-spacing: -0.02em; margin-bottom: 24px; }
.hero h1 span { color: #4FD1C5; }
.hero-desc { font-size: 18px; line-height: 1.8; color: rgba(255, 255, 255, 0.9); margin-bottom: 36px; max-width: 620px; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 40px; }
.hero-trust { display: flex; gap: 32px; flex-wrap: wrap; }
.trust-item { display: flex; align-items: center; gap: 8px; font-size: 14px; color: rgba(255, 255, 255, 0.8); }
.trust-item i { color: var(--secondary); }
/* ===== 数据统计 KPI ===== */
.stats { margin-top: -60px; position: relative; z-index: 10; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stats-card { background: var(--white); border-radius: var(--radius-lg); padding: 36px 28px; box-shadow: var(--shadow-card); border: 1px solid var(--border); text-align: center; transition: var(--transition); }
.stats-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.stats-number { font-size: 48px; font-weight: 800; color: var(--primary); line-height: 1.1; margin-bottom: 8px; }
.stats-number span { font-size: 24px; font-weight: 700; }
.stats-label { font-size: 15px; color: var(--text-light); }
.stats-icon { width: 52px; height: 52px; border-radius: 14px; display: inline-flex; align-items: center; justify-content: center; background: var(--primary-light); color: var(--primary); font-size: 22px; margin-bottom: 16px; }
/* ===== 核心优势 ===== */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px; }
.feature-card { background: var(--white); border-radius: var(--radius-lg); padding: 40px 32px; border: 1px solid var(--border); box-shadow: var(--shadow-card); transition: var(--transition); position: relative; overflow: hidden; }
.feature-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: linear-gradient(90deg, var(--primary), var(--secondary)); opacity: 0; transition: var(--transition); }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.feature-card:hover::before { opacity: 1; }
.feature-icon { width: 64px; height: 64px; border-radius: 18px; background: var(--primary-light); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 26px; margin-bottom: 20px; }
.feature-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.feature-card p { font-size: 15px; line-height: 1.7; color: var(--text-light); }
/* ===== 分类入口 ===== */
.category-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.category-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-card); transition: var(--transition); display: flex; flex-direction: column; }
.category-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.category-card .card-image { position: relative; height: 220px; overflow: hidden; }
.category-card .card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.category-card:hover .card-image img { transform: scale(1.05); }
.category-card .card-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0, 0, 0, 0.45), transparent 60%); }
.card-cat-badge { position: absolute; top: 16px; left: 16px; z-index: 2; background: rgba(255, 255, 255, 0.95); color: var(--primary); font-size: 13px; font-weight: 600; padding: 5px 14px; border-radius: 20px; }
.category-card .card-body { padding: 28px; flex: 1; display: flex; flex-direction: column; }
.category-card .card-body h3 { font-size: 22px; font-weight: 700; margin-bottom: 12px; }
.category-card .card-body p { font-size: 15px; color: var(--text-light); line-height: 1.7; margin-bottom: 20px; flex: 1; }
.card-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 15px; color: var(--primary); }
.card-link i { transition: transform 0.3s ease; }
.card-link:hover i { transform: translateX(4px); }
/* ===== 资讯列表 ===== */
.news-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); background: var(--white); box-shadow: var(--shadow-card); }
.news-feature { background: linear-gradient(135deg, var(--primary), var(--primary-dark)); color: var(--white); padding: 40px; display: flex; flex-direction: column; justify-content: center; }
.news-feature h2 { font-size: 32px; line-height: 1.3; margin-bottom: 16px; }
.news-feature p { font-size: 15px; line-height: 1.8; opacity: 0.85; margin-bottom: 24px; }
.news-feature .btn { align-self: flex-start; }
.news-list-side { padding: 16px 24px; }
.news-item { display: block; padding: 20px 12px; border-bottom: 1px solid var(--border); text-decoration: none; transition: var(--transition); }
.news-item:last-child { border-bottom: 0; }
.news-item:hover { background: var(--primary-light); border-radius: var(--radius-md); }
.news-item .news-top { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.news-cat { background: var(--secondary-light); color: var(--secondary-dark); font-size: 12px; font-weight: 600; padding: 3px 10px; border-radius: 4px; }
.news-date { font-size: 13px; color: var(--text-mute); }
.news-item h3 { font-size: 17px; font-weight: 600; color: var(--text); margin-bottom: 6px; transition: var(--transition); }
.news-item:hover h3 { color: var(--primary); }
.news-item p { font-size: 14px; color: var(--text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.empty-tip { padding: 40px; text-align: center; color: var(--text-mute); font-size: 16px; }
/* ===== 流程 ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; position: relative; }
.process-step { text-align: center; position: relative; padding: 0 16px; }
.process-step::after { content: ''; position: absolute; top: 36px; left: calc(50% + 60px); width: calc(100% - 80px); height: 2px; background: linear-gradient(90deg, var(--border), var(--border)); z-index: 0; }
.process-step:last-child::after { display: none; }
.process-icon { width: 72px; height: 72px; border-radius: 50%; background: var(--white); border: 2px solid var(--primary); color: var(--primary); display: flex; align-items: center; justify-content: center; font-size: 26px; margin: 0 auto 20px; position: relative; z-index: 1; box-shadow: 0 0 0 6px var(--primary-light); transition: var(--transition); }
.process-step:hover .process-icon { background: var(--primary); color: var(--white); transform: scale(1.05); }
.process-step h3 { font-size: 18px; font-weight: 700; margin-bottom: 10px; }
.process-step p { font-size: 14px; color: var(--text-light); line-height: 1.6; }
/* ===== FAQ ===== */
.faq-grid { max-width: 860px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; transition: var(--transition); }
.faq-item:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.faq-item summary { padding: 24px 28px; font-size: 17px; font-weight: 600; cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: var(--transition); }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; font-size: 14px; color: var(--secondary); transition: transform 0.3s ease; flex-shrink: 0; }
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item[open] summary { color: var(--primary); }
.faq-item .faq-answer { padding: 0 28px 24px; font-size: 15px; color: var(--text-light); line-height: 1.8; }
/* ===== CTA ===== */
.cta-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, #2A6F97); color: var(--white); text-align: center; padding: 96px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 300px; height: 300px; border-radius: 50%; background: rgba(255, 255, 255, 0.08); }
.cta-section::after { content: ''; position: absolute; bottom: -60px; left: -40px; width: 200px; height: 200px; border-radius: 50%; background: rgba(0, 166, 126, 0.2); }
.cta-content { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.cta-content h2 { font-size: 42px; line-height: 1.3; margin-bottom: 20px; font-weight: 800; }
.cta-content p { font-size: 18px; opacity: 0.9; margin-bottom: 36px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
/* ===== Footer ===== */
.site-footer { background: var(--bg-dark); color: #B0C4D8; padding: 72px 0 0; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer-brand .footer-logo { font-size: 22px; font-weight: 700; color: var(--white); margin-bottom: 16px; display: inline-block; }
.footer-brand p { color: #8FA7BF; line-height: 1.8; margin-bottom: 20px; }
.footer-col h4 { color: var(--white); font-size: 16px; margin-bottom: 18px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: #8FA7BF; text-decoration: none; transition: var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-contact-item { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: #8FA7BF; }
.footer-contact-item i { color: var(--secondary); font-size: 16px; width: 20px; text-align: center; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; color: #6D8AA3; }
.footer-bottom p { margin-bottom: 4px; }
/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero h1 { font-size: 42px; }
  .stats-grid, .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .category-grid { grid-template-columns: repeat(2, 1fr); }
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 48px 24px; }
  .process-step::after { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { gap: 24px; margin-right: 20px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
  .main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; gap: 8px; box-shadow: 0 16px 32px rgba(0,0,0,0.1); border-bottom: 2px solid var(--primary); z-index: 998; }
  .main-nav.open { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
  .nav-link.active { background: var(--primary-light); }
  .nav-link.active::after { display: none; }
  .nav-toggle { display: block; }
  .header-actions .btn-sm { display: none; }
  .hero { min-height: 520px; padding: 80px 0; }
  .hero h1 { font-size: 34px; }
  .hero-desc { font-size: 16px; }
  .hero-trust { gap: 16px; }
  .stats { margin-top: -40px; }
  .news-wrap { grid-template-columns: 1fr; }
  .news-feature { padding: 32px; }
  .news-feature h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .feature-grid, .category-grid, .process-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .logo-text { font-size: 16px; }
  .logo-badge { font-size: 14px; padding: 4px 8px; }
  .hero h1 { font-size: 28px; }
  .hero-actions .btn { width: 100%; }
  .cta-content h2 { font-size: 28px; }
  .faq-item summary { padding: 20px; font-size: 15px; }
  .faq-item .faq-answer { padding: 0 20px 20px; }
}

:root {
  --primary: #0F4C81;
  --primary-dark: #0A3A64;
  --primary-light: #EAF1F7;
  --secondary: #00A67E;
  --secondary-dark: #008A68;
  --secondary-light: #E6F7F2;
  --bg: #F7F9FC;
  --bg-dark: #0B1D2E;
  --text: #1A2433;
  --text-light: #5A6B7B;
  --text-mute: #8A9BAE;
  --border: #E3E9F0;
  --white: #FFFFFF;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 24px rgba(15, 76, 129, 0.07);
  --shadow-hover: 0 12px 36px rgba(15, 76, 129, 0.13);
  --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 96px 0; }
.section-alt { background: var(--white); }
.section-head { text-align: center; max-width: 760px; margin: 0 auto 56px; }
.section-head .section-tag { display: inline-block; font-size: 13px; font-weight: 600; color: var(--secondary); background: var(--secondary-light); border-radius: 20px; padding: 6px 18px; margin-bottom: 16px; letter-spacing: 0.06em; text-transform: uppercase; }
.section-head h2 { font-size: 36px; line-height: 1.3; font-weight: 700; color: var(--text); margin-bottom: 16px; }
.section-head p { font-size: 16px; color: var(--text-light); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 50px; font-size: 15px; font-weight: 600; border: 0; transition: var(--transition); text-decoration: none; line-height: 1.2; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 14px rgba(15, 76, 129, 0.25); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(15, 76, 129, 0.35); }
.btn-secondary { background: var(--secondary); color: var(--white); box-shadow: 0 4px 14px rgba(0, 166, 126, 0.25); }
.btn-secondary:hover { background: var(--secondary-dark); color: var(--white); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
.btn-light { background: var(--white); color: var(--primary); box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1); }
.btn-light:hover { background: var(--primary-light); color: var(--primary); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.site-header { position: sticky; top: 0; z-index: 999; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.logo-badge { background: var(--primary); color: #fff; font-weight: 700; font-size: 16px; padding: 5px 12px; border-radius: 8px; }
.logo-text { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: 0.02em; white-space: nowrap; }
.main-nav { display: flex; gap: 36px; align-items: center; margin-left: auto; margin-right: 32px; }
.nav-link { font-size: 15px; color: var(--text-light); text-decoration: none; font-weight: 500; position: relative; padding: 8px 0; transition: var(--transition); }
.nav-link.active, .nav-link:hover { color: var(--primary); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--secondary); border-radius: 3px; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; background: none; border: 0; font-size: 24px; color: var(--text); padding: 8px; border-radius: 8px; transition: var(--transition); }
.nav-toggle:hover { background: var(--primary-light); color: var(--primary); }
.page-banner { position: relative; padding: 100px 0; background: linear-gradient(135deg, rgba(10, 30, 52, 0.9), rgba(15, 76, 129, 0.8)), url('/assets/images/backpic/back-2.png') center/cover no-repeat; color: var(--white); text-align: center; }
.page-banner h1 { font-size: 44px; font-weight: 800; margin-bottom: 16px; }
.page-banner p { font-size: 18px; opacity: 0.9; max-width: 640px; margin: 0 auto; }
.page-banner .banner-badge { display: inline-block; background: rgba(255, 255, 255, 0.15); border: 1px solid rgba(255, 255, 255, 0.25); padding: 6px 20px; border-radius: 40px; font-size: 13px; margin-bottom: 20px; }
.article-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.article-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-card); transition: var(--transition); display: flex; flex-direction: column; }
.article-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.article-card .card-image { height: 200px; overflow: hidden; position: relative; }
.article-card .card-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.article-card:hover .card-image img { transform: scale(1.05); }
.article-card .card-image::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, rgba(0,0,0,0.3), transparent 60%); }
.article-card .card-body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.article-card .card-body .article-top { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.article-card .card-body h3 { font-size: 19px; font-weight: 700; line-height: 1.5; margin-bottom: 10px; color: var(--text); }
.article-card .card-body p { font-size: 14px; color: var(--text-light); line-height: 1.7; flex: 1; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-card .card-body .article-date { margin-top: 16px; font-size: 13px; color: var(--text-mute); display: flex; align-items: center; gap: 6px; }
.badge { display: inline-block; background: var(--primary-light); color: var(--primary); font-size: 12px; font-weight: 600; padding: 4px 12px; border-radius: 4px; }
.badge-green { background: var(--secondary-light); color: var(--secondary-dark); }
.stats-mini { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 64px; }
.stats-mini-card { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 28px; text-align: center; box-shadow: var(--shadow-card); }
.stats-mini-card .num { font-size: 36px; font-weight: 800; color: var(--primary); }
.stats-mini-card .label { font-size: 14px; color: var(--text-light); margin-top: 4px; }
.tags-wrap { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.tag-pill { display: inline-block; padding: 8px 20px; background: var(--white); border: 1px solid var(--border); border-radius: 40px; font-size: 14px; font-weight: 500; color: var(--text-light); transition: var(--transition); }
.tag-pill:hover { border-color: var(--secondary); background: var(--secondary-light); color: var(--secondary-dark); transform: translateY(-2px); }
.cta-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, #2A6F97); color: var(--white); text-align: center; padding: 96px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 300px; height: 300px; border-radius: 50%; background: rgba(255, 255, 255, 0.08); }
.cta-section::after { content: ''; position: absolute; bottom: -60px; left: -40px; width: 200px; height: 200px; border-radius: 50%; background: rgba(0, 166, 126, 0.2); }
.cta-content { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.cta-content h2 { font-size: 42px; line-height: 1.3; margin-bottom: 20px; font-weight: 800; }
.cta-content p { font-size: 18px; opacity: 0.9; margin-bottom: 36px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.site-footer { background: var(--bg-dark); color: #B0C4D8; padding: 72px 0 0; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer-brand .footer-logo { font-size: 22px; font-weight: 700; color: var(--white); margin-bottom: 16px; display: inline-block; }
.footer-brand p { color: #8FA7BF; line-height: 1.8; margin-bottom: 20px; }
.footer-col h4 { color: var(--white); font-size: 16px; margin-bottom: 18px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: #8FA7BF; text-decoration: none; transition: var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-contact-item { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: #8FA7BF; }
.footer-contact-item i { color: var(--secondary); font-size: 16px; width: 20px; text-align: center; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; color: #6D8AA3; }
.footer-bottom p { margin-bottom: 4px; }
@media (max-width: 1024px) {
  .article-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { gap: 24px; margin-right: 20px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .section-head h2 { font-size: 28px; }
  .main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; gap: 8px; box-shadow: 0 16px 32px rgba(0,0,0,0.1); border-bottom: 2px solid var(--primary); z-index: 998; }
  .main-nav.open { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
  .nav-link.active { background: var(--primary-light); }
  .nav-link.active::after { display: none; }
  .nav-toggle { display: block; }
  .header-actions .btn-sm { display: none; }
  .page-banner { padding: 72px 0; }
  .page-banner h1 { font-size: 32px; }
  .stats-mini { grid-template-columns: repeat(3, 1fr); gap: 12px; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-grid { grid-template-columns: 1fr; }
  .stats-mini { grid-template-columns: 1fr 1fr; }
  .stats-mini-card .num { font-size: 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .logo-text { font-size: 16px; }
  .logo-badge { font-size: 14px; padding: 4px 8px; }
  .cta-content h2 { font-size: 28px; }
  .page-banner h1 { font-size: 26px; }
}

:root {
  --primary: #0F4C81;
  --primary-dark: #0A3A64;
  --primary-light: #EAF1F7;
  --secondary: #00A67E;
  --secondary-dark: #008A68;
  --secondary-light: #E6F7F2;
  --bg: #F7F9FC;
  --bg-dark: #0B1D2E;
  --text: #1A2433;
  --text-light: #5A6B7B;
  --text-mute: #8A9BAE;
  --border: #E3E9F0;
  --white: #FFFFFF;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 8px;
  --shadow-card: 0 6px 24px rgba(15, 76, 129, 0.07);
  --shadow-hover: 0 12px 36px rgba(15, 76, 129, 0.13);
  --transition: all 0.3s ease;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif; background: var(--bg); color: var(--text); line-height: 1.7; font-size: 16px; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--secondary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }
.section { padding: 96px 0; }
.section-alt { background: var(--white); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 14px 32px; border-radius: 50px; font-size: 15px; font-weight: 600; border: 0; transition: var(--transition); text-decoration: none; line-height: 1.2; }
.btn-primary { background: var(--primary); color: var(--white); box-shadow: 0 4px 14px rgba(15, 76, 129, 0.25); }
.btn-primary:hover { background: var(--primary-dark); color: var(--white); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(15, 76, 129, 0.35); }
.btn-secondary { background: var(--secondary); color: var(--white); box-shadow: 0 4px 14px rgba(0, 166, 126, 0.25); }
.btn-secondary:hover { background: var(--secondary-dark); color: var(--white); transform: translateY(-2px); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
.btn-sm { padding: 10px 22px; font-size: 14px; }
.site-header { position: sticky; top: 0; z-index: 999; background: rgba(255, 255, 255, 0.92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.brand-logo { display: flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.logo-badge { background: var(--primary); color: #fff; font-weight: 700; font-size: 16px; padding: 5px 12px; border-radius: 8px; }
.logo-text { font-size: 19px; font-weight: 700; color: var(--text); letter-spacing: 0.02em; white-space: nowrap; }
.main-nav { display: flex; gap: 36px; align-items: center; margin-left: auto; margin-right: 32px; }
.nav-link { font-size: 15px; color: var(--text-light); text-decoration: none; font-weight: 500; position: relative; padding: 8px 0; transition: var(--transition); }
.nav-link.active, .nav-link:hover { color: var(--primary); }
.nav-link.active::after { content: ''; position: absolute; bottom: 0; left: 0; width: 100%; height: 3px; background: var(--secondary); border-radius: 3px; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.nav-toggle { display: none; background: none; border: 0; font-size: 24px; color: var(--text); padding: 8px; border-radius: 8px; transition: var(--transition); }
.nav-toggle:hover { background: var(--primary-light); color: var(--primary); }
.breadcrumb-bar { background: var(--white); border-bottom: 1px solid var(--border); padding: 16px 0; font-size: 14px; color: var(--text-mute); }
.breadcrumb-bar a { color: var(--text-light); margin: 0 6px; }
.breadcrumb-bar a:first-child { margin-left: 0; }
.breadcrumb-bar span { margin: 0 6px; }
.article-layout { display: grid; grid-template-columns: 1fr 360px; gap: 48px; padding: 56px 0; }
.article-main { background: var(--white); border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-card); padding: 48px; }
.article-main h1 { font-size: 32px; line-height: 1.4; font-weight: 800; color: var(--text); margin-bottom: 16px; }
.article-meta { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 24px; padding-bottom: 24px; border-bottom: 1px solid var(--border); }
.article-meta .badge { display: inline-block; background: var(--secondary-light); color: var(--secondary-dark); font-size: 13px; font-weight: 600; padding: 4px 14px; border-radius: 4px; }
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-mute); }
.article-content { font-size: 16px; line-height: 1.9; color: var(--text); }
.article-content p { margin-bottom: 20px; }
.article-content h2 { font-size: 26px; font-weight: 700; margin: 40px 0 16px; color: var(--text); }
.article-content h3 { font-size: 21px; font-weight: 700; margin: 32px 0 14px; color: var(--text); }
.article-content img { border-radius: var(--radius-md); max-width: 100%; height: auto; margin: 24px 0; }
.article-content ul, .article-content ol { margin: 16px 0 24px; padding-left: 24px; }
.article-content ul li { list-style: disc; margin-bottom: 8px; }
.article-content ol li { list-style: decimal; margin-bottom: 8px; }
.article-content blockquote { border-left: 4px solid var(--secondary); padding: 16px 24px; background: var(--secondary-light); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; margin: 24px 0; font-style: italic; }
.article-content a { text-decoration: underline; }
.article-share { display: flex; align-items: center; gap: 12px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); }
.article-share span { font-size: 14px; color: var(--text-mute); font-weight: 500; }
.share-btn { width: 42px; height: 42px; border-radius: 50%; background: var(--bg); color: var(--text-light); display: flex; align-items: center; justify-content: center; transition: var(--transition); }
.share-btn:hover { background: var(--primary); color: var(--white); transform: translateY(-2px); }
.article-side { display: flex; flex-direction: column; gap: 28px; }
.side-card { background: var(--white); border-radius: var(--radius-md); border: 1px solid var(--border); box-shadow: var(--shadow-card); padding: 28px; }
.side-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 18px; color: var(--text); position: relative; padding-bottom: 12px; }
.side-card h3::after { content: ''; position: absolute; bottom: 0; left: 0; width: 36px; height: 3px; background: var(--secondary); border-radius: 3px; }
.side-news-item { display: block; padding: 12px 0; border-bottom: 1px solid var(--border); text-decoration: none; transition: var(--transition); }
.side-news-item:last-child { border-bottom: 0; }
.side-news-item:hover { padding-left: 8px; }
.side-news-item .side-cat { font-size: 12px; color: var(--secondary-dark); background: var(--secondary-light); padding: 2px 8px; border-radius: 4px; margin-bottom: 6px; display: inline-block; }
.side-news-item h4 { font-size: 15px; font-weight: 600; color: var(--text); line-height: 1.5; margin-bottom: 4px; transition: var(--transition); }
.side-news-item:hover h4 { color: var(--primary); }
.side-news-item .side-date { font-size: 12px; color: var(--text-mute); }
.not-found { background: var(--white); border-radius: var(--radius-lg); border: 1px solid var(--border); box-shadow: var(--shadow-card); padding: 80px 40px; text-align: center; }
.not-found h1 { font-size: 36px; margin-bottom: 16px; }
.not-found p { color: var(--text-mute); margin-bottom: 24px; }
.cta-section { background: linear-gradient(135deg, var(--primary-dark), var(--primary) 60%, #2A6F97); color: var(--white); text-align: center; padding: 96px 0; position: relative; overflow: hidden; }
.cta-section::before { content: ''; position: absolute; top: -80px; right: -80px; width: 300px; height: 300px; border-radius: 50%; background: rgba(255, 255, 255, 0.08); }
.cta-section::after { content: ''; position: absolute; bottom: -60px; left: -40px; width: 200px; height: 200px; border-radius: 50%; background: rgba(0, 166, 126, 0.2); }
.cta-content { position: relative; z-index: 1; max-width: 720px; margin: 0 auto; }
.cta-content h2 { font-size: 36px; line-height: 1.3; margin-bottom: 20px; font-weight: 800; }
.cta-content p { font-size: 18px; opacity: 0.9; margin-bottom: 36px; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.site-footer { background: var(--bg-dark); color: #B0C4D8; padding: 72px 0 0; font-size: 15px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 48px; padding-bottom: 48px; border-bottom: 1px solid rgba(255, 255, 255, 0.1); }
.footer-brand .footer-logo { font-size: 22px; font-weight: 700; color: var(--white); margin-bottom: 16px; display: inline-block; }
.footer-brand p { color: #8FA7BF; line-height: 1.8; margin-bottom: 20px; }
.footer-col h4 { color: var(--white); font-size: 16px; margin-bottom: 18px; font-weight: 600; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a { color: #8FA7BF; text-decoration: none; transition: var(--transition); }
.footer-col a:hover { color: var(--secondary); padding-left: 4px; }
.footer-contact-item { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; color: #8FA7BF; }
.footer-contact-item i { color: var(--secondary); font-size: 16px; width: 20px; text-align: center; }
.footer-bottom { padding: 24px 0; text-align: center; font-size: 13px; color: #6D8AA3; }
.footer-bottom p { margin-bottom: 4px; }
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr 300px; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { gap: 24px; margin-right: 20px; }
}
@media (max-width: 768px) {
  .container { padding: 0 20px; }
  .section { padding: 64px 0; }
  .article-layout { grid-template-columns: 1fr; }
  .article-main { padding: 28px; }
  .article-main h1 { font-size: 24px; }
  .main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 20px; gap: 8px; box-shadow: 0 16px 32px rgba(0,0,0,0.1); border-bottom: 2px solid var(--primary); z-index: 998; }
  .main-nav.open { display: flex; }
  .nav-link { padding: 12px 16px; border-radius: var(--radius-sm); width: 100%; }
  .nav-link.active { background: var(--primary-light); }
  .nav-link.active::after { display: none; }
  .nav-toggle { display: block; }
  .header-actions .btn-sm { display: none; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-main { padding: 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .logo-text { font-size: 16px; }
  .logo-badge { font-size: 14px; padding: 4px 8px; }
  .cta-content h2 { font-size: 26px; }
  .breadcrumb-bar { font-size: 13px; }
}

/* roulang page: article */
/* ===== Design Variables ===== */
:root {
    --primary: #0e3e5f;
    --primary-dark: #092a41;
    --primary-light: #18688f;
    --accent: #0f9d8a;
    --accent-bright: #16bfa8;
    --accent-soft: #e3f6f2;
    --bg: #f4f7fa;
    --bg-alt: #eaeff4;
    --bg-deep: #0a2c45;
    --surface: #ffffff;
    --text: #17252f;
    --text-secondary: #5b6e7e;
    --text-weak: #92a1b0;
    --border: #dfe6ee;
    --radius: 12px;
    --radius-lg: 20px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 10px rgba(14, 62, 95, .05);
    --shadow-md: 0 8px 28px rgba(14, 62, 95, .09);
    --shadow-lg: 0 22px 56px rgba(14, 62, 95, .14);
    --transition: all .25s ease;
    --header-height: 74px;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
    font-family: "PingFang SC", "HarmonyOS Sans SC", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
img { max-width: 100%; height: auto; display: block; border: 0; }
button, input, select, textarea { font: inherit; color: inherit; border: none; outline: none; background: transparent; }
button { cursor: pointer; }
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 { line-height: 1.3; font-weight: 700; }
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
@media (max-width: 768px) {
    .container { padding: 0 16px; }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 15px;
    line-height: 1.4;
    transition: var(--transition);
    border: 2px solid transparent;
    white-space: nowrap;
    text-align: center;
}
.btn i { font-size: 14px; }
.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(14, 62, 95, .22);
}
.btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(14, 62, 95, .28); color: #fff; }
.btn-primary:active { transform: translateY(0); box-shadow: 0 2px 8px rgba(14, 62, 95, .2); }
.btn-primary:focus-visible { outline: 3px solid rgba(14, 62, 95, .4); outline-offset: 2px; }
.btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 4px 18px rgba(0, 0, 0, .14);
}
.btn-light:hover { background: var(--accent-soft); transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0, 0, 0, .18); color: var(--primary); }
.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
.btn-sm { padding: 9px 20px; font-size: 14px; border-radius: var(--radius-sm); }
.btn-lg { padding: 15px 40px; font-size: 17px; }
.btn-block { width: 100%; display: flex; }
.btn:focus-visible { outline: 3px solid rgba(14, 62, 95, .35); outline-offset: 2px; }

/* ===== Header / Navigation ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    height: var(--header-height);
    background: rgba(255, 255, 255, .92);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 20px;
}
.brand-logo {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}
.brand-logo:hover { text-decoration: none; }
.logo-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    font-weight: 800;
    font-size: 15px;
    border-radius: 10px;
    letter-spacing: 1px;
    box-shadow: 0 4px 14px rgba(14, 62, 95, .22);
}
.logo-text {
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: .5px;
    white-space: nowrap;
}
.main-nav {
    display: flex;
    align-items: center;
    gap: 6px;
    flex: 1;
    justify-content: center;
}
.nav-link {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}
.nav-link:hover { color: var(--primary); background: var(--bg-alt); }
.nav-link.active { color: var(--primary); background: var(--accent-soft); }
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    border-radius: 3px;
    background: var(--accent);
}
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: var(--bg-alt);
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--primary);
    transition: var(--transition);
}
.nav-toggle:hover { background: var(--accent-soft); }

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        padding: 16px;
        gap: 4px;
        border-bottom: 1px solid var(--border);
        box-shadow: var(--shadow-md);
        transform: translateY(-120%);
        opacity: 0;
        pointer-events: none;
        transition: var(--transition);
        z-index: 99;
    }
    .main-nav.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
    .nav-link { text-align: center; padding: 12px 20px; border-radius: var(--radius); }
    .nav-link.active::after { display: none; }
    .nav-toggle { display: inline-flex; }
    .header-actions .btn-primary { display: none; }
    .logo-text { font-size: 18px; }
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: calc(var(--header-height) + 64px) 0 68px;
    background: linear-gradient(rgba(9, 42, 65, .82), rgba(9, 42, 65, .88)), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    color: #fff;
    overflow: hidden;
}
.article-hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(transparent, var(--bg));
    pointer-events: none;
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    margin-bottom: 28px;
    color: rgba(255, 255, 255, .7);
}
.breadcrumb a { color: rgba(255, 255, 255, .85); text-decoration: none; transition: var(--transition); }
.breadcrumb a:hover { color: var(--accent-bright); }
.breadcrumb i { font-size: 11px; opacity: .6; }
.breadcrumb span { color: var(--accent-bright); }
.article-hero-inner { max-width: 860px; }
.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    background: rgba(255, 255, 255, .14);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, .25);
    transition: var(--transition);
}
.tag-accent { background: var(--accent); border-color: var(--accent); color: #fff; }
.tag-accent:hover { background: var(--accent-bright); color: #fff; }
.article-hero h1 {
    font-size: 34px;
    font-weight: 800;
    margin: 18px 0 16px;
    line-height: 1.35;
    letter-spacing: .5px;
    color: #fff;
}
.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, .8);
}
.meta-item { display: inline-flex; align-items: center; gap: 7px; }
.meta-item i { font-size: 14px; color: var(--accent-bright); }

@media (max-width: 768px) {
    .article-hero { padding: calc(var(--header-height) + 40px) 0 52px; }
    .article-hero h1 { font-size: 26px; }
    .article-meta { gap: 12px; }
}

/* ===== Article Main Section ===== */
.article-main-section {
    padding: 64px 0 50px;
    position: relative;
    z-index: 2;
}
.article-content-wrap { padding-right: 8px; }
.article-content {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 44px 48px;
    box-shadow: var(--shadow-md);
    font-size: 16px;
    line-height: 1.9;
    color: var(--text);
}
.article-content p { margin-bottom: 1.4em; }
.article-content h2, .article-content h3, .article-content h4 {
    margin: 1.6em 0 .6em;
    color: var(--primary);
}
.article-content h2 { font-size: 1.45em; }
.article-content h3 { font-size: 1.22em; }
.article-content img { border-radius: var(--radius); margin: 1.4em 0; box-shadow: var(--shadow-sm); }
.article-content ul, .article-content ol { margin: 1em 0 1.4em; padding-left: 1.4em; }
.article-content ul { list-style: disc; }
.article-content ol { list-style: decimal; }
.article-content li { margin-bottom: .5em; }
.article-content blockquote {
    border-left: 4px solid var(--accent);
    background: var(--accent-soft);
    padding: 16px 22px;
    border-radius: 0 var(--radius) var(--radius) 0;
    margin: 1.4em 0;
    color: var(--text-secondary);
}
.article-content a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }
.article-content a:hover { color: var(--primary); }
.article-content code {
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 5px;
    padding: 2px 8px;
    font-size: .92em;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

.article-footer-tags {
    margin-top: 36px;
    padding-top: 26px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 14px;
    color: var(--text-secondary);
}
.article-footer-tags .tag {
    background: var(--bg-alt);
    color: var(--text-secondary);
    border-color: var(--border);
    text-decoration: none;
    font-weight: 500;
}
.article-footer-tags .tag:hover { background: var(--accent-soft); color: var(--primary); border-color: var(--accent); }

.not-found {
    text-align: center;
    padding: 60px 30px;
}
.not-found i {
    font-size: 56px;
    color: var(--border);
    margin-bottom: 24px;
    display: block;
}
.not-found h2 { font-size: 26px; color: var(--primary); margin-bottom: 12px; }
.not-found p { color: var(--text-secondary); margin-bottom: 30px; }

@media (max-width: 900px) {
    .article-content { padding: 30px 28px; }
}
@media (max-width: 520px) {
    .article-content { padding: 22px 18px; border-radius: var(--radius); }
    .article-content-wrap { padding-right: 0; }
}

/* ===== Sidebar ===== */
.article-sidebar-wrap { padding-left: 12px; }
.article-sidebar { display: flex; flex-direction: column; gap: 28px; }
.sidebar-card {
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
}
.sidebar-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.sidebar-card h3 {
    font-size: 17px;
    color: var(--primary);
    padding-bottom: 16px;
    margin-bottom: 18px;
    border-bottom: 2px solid var(--accent-soft);
    display: flex;
    align-items: center;
    gap: 8px;
}
.sidebar-card h3::before {
    content: '';
    width: 4px;
    height: 18px;
    background: var(--accent);
    border-radius: 4px;
    display: inline-block;
}
.sidebar-card ul { display: flex; flex-direction: column; gap: 10px; }
.sidebar-card ul li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 14.5px;
    color: var(--text-secondary);
}
.sidebar-card ul li span:first-child { color: var(--text-weak); flex-shrink: 0; min-width: 70px; }
.sidebar-card ul li span:last-child { color: var(--text); font-weight: 500; }
.sidebar-list li { align-items: center; padding: 6px 0; }
.sidebar-list li i { color: var(--accent); font-size: 15px; width: 20px; text-align: center; flex-shrink: 0; }
.sidebar-cta { background: linear-gradient(160deg, var(--primary), var(--primary-light)); border: none; color: #fff; text-align: center; }
.sidebar-cta h3 { color: #fff; border-bottom-color: rgba(255, 255, 255, .18); }
.sidebar-cta h3::before { background: var(--accent-bright); }
.sidebar-cta p { color: rgba(255, 255, 255, .82); font-size: 14px; margin-bottom: 20px; }
.sidebar-card .btn-block { margin-top: 4px; }

@media (max-width: 1024px) {
    .article-sidebar-wrap { padding-right: 12px; }
    .article-sidebar { flex-direction: row; flex-wrap: wrap; gap: 20px; }
    .sidebar-card { flex: 1 1 260px; }
}
@media (max-width: 768px) {
    .article-sidebar-wrap { padding-left: 0; }
    .article-sidebar { flex-direction: column; }
}

/* ===== Section Common ===== */
.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 54px;
}
.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    border-radius: 30px;
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 18px;
}
.section-tag::before { content: '◆'; font-size: 10px; }
.section-header h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 14px;
    line-height: 1.3;
}
.section-header p { color: var(--text-secondary); font-size: 16px; }

@media (max-width: 768px) {
    .section-header { margin-bottom: 36px; }
    .section-header h2 { font-size: 26px; }
}

/* ===== Platform Features ===== */
.feature-section {
    padding: 80px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.feature-grid { row-gap: 28px; }
.feature-card {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 32px;
    height: 100%;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    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: transparent; }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
    width: 58px;
    height: 58px;
    border-radius: 16px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: #fff;
    margin-bottom: 22px;
    box-shadow: 0 8px 20px rgba(14, 62, 95, .18);
}
.feature-card h3 { font-size: 19px; color: var(--primary); margin-bottom: 12px; }
.feature-card p { color: var(--text-secondary); font-size: 15px; line-height: 1.75; }
@media (max-width: 520px) {
    .feature-card { padding: 26px 22px; }
}

/* ===== FAQ ===== */
.faq-section { padding: 80px 0; background: var(--bg); }
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.faq-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { border-color: var(--accent); box-shadow: var(--shadow-sm); }
.faq-item.active { border-color: var(--accent); box-shadow: var(--shadow-md); }
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 22px 28px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    transition: var(--transition);
    text-align: left;
}
.faq-question:hover { color: var(--primary); }
.faq-question i { color: var(--text-weak); font-size: 13px; transition: var(--transition); flex-shrink: 0; }
.faq-item.active .faq-question { color: var(--primary); }
.faq-item.active .faq-question i { color: var(--accent); transform: rotate(180deg); }
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
    padding: 0 28px;
}
.faq-item.active .faq-answer { max-height: 400px; padding-bottom: 22px; }
.faq-answer p { color: var(--text-secondary); font-size: 15px; line-height: 1.8; }

@media (max-width: 768px) {
    .faq-section { padding: 60px 0; }
    .faq-question { padding: 18px 18px; font-size: 15px; }
    .faq-answer { padding: 0 18px; }
    .faq-item.active .faq-answer { padding-bottom: 18px; }
}

/* ===== CTA ===== */
.cta-section { padding: 0; }
.cta-inner {
    background: linear-gradient(140deg, var(--primary-dark), var(--primary-light)), url('/assets/images/backpic/back-2.png') center / cover no-repeat;
    background-blend-mode: overlay;
    border-radius: var(--radius-lg);
    padding: 72px 56px;
    text-align: center;
    color: #fff;
    margin: 80px 0;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}
.cta-inner::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(22, 191, 168, .18);
    pointer-events: none;
}
.cta-inner::after {
    content: '';
    position: absolute;
    bottom: -80px;
    left: -30px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: rgba(255, 255, 255, .08);
    pointer-events: none;
}
.cta-inner h2 { font-size: 30px; font-weight: 800; margin-bottom: 14px; position: relative; z-index: 2; }
.cta-inner p { color: rgba(255, 255, 255, .85); font-size: 16px; margin-bottom: 34px; max-width: 520px; margin-left: auto; margin-right: auto; position: relative; z-index: 2; }
.cta-inner .btn { position: relative; z-index: 2; }
@media (max-width: 768px) {
    .cta-inner { padding: 44px 24px; margin: 56px 0; }
    .cta-inner h2 { font-size: 24px; }
}

/* ===== Footer ===== */
.site-footer {
    background: var(--bg-deep);
    color: rgba(255, 255, 255, .75);
    padding: 68px 0 0;
    position: relative;
}
.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 48px;
}
.footer-brand .footer-logo {
    font-size: 22px;
    font-weight: 800;
    color: #fff;
    display: block;
    margin-bottom: 16px;
    text-decoration: none;
}
.footer-brand p { font-size: 14px; line-height: 1.85; color: rgba(255, 255, 255, .6); max-width: 360px; }
.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 12px; }
.footer-col ul li a {
    color: rgba(255, 255, 255, .65);
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-col ul li a::before { content: '›'; font-size: 14px; color: var(--accent); transition: var(--transition); }
.footer-col ul li a:hover { color: #fff; padding-left: 4px; }
.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, .65);
    margin-bottom: 14px;
}
.footer-contact-item i { color: var(--accent-bright); width: 18px; text-align: center; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1);
    padding: 22px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, .45);
}
.footer-bottom p { margin: 0; }
@media (max-width: 900px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .footer-bottom { justify-content: center; text-align: center; }
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg-alt); }
::-webkit-scrollbar-thumb { background: #b6c2d0; border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary-light); }

/* ===== Utility ===== */
.text-accent { color: var(--accent); }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

/* roulang page: category1 */
/* ============ 设计变量 ============ */
        :root {
            --primary: #0c6b5f;
            --primary-light: #128a77;
            --primary-dark: #084a42;
            --accent: #f0b341;
            --accent-light: #fbe3b3;
            --dark-bg: #0b1f2a;
            --bg-light: #f2f6f8;
            --white: #ffffff;
            --text-main: #1e2a32;
            --text-muted: #5c7280;
            --border: #dfe7ec;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --shadow-sm: 0 2px 10px rgba(11, 31, 42, .06);
            --shadow-md: 0 8px 28px rgba(11, 31, 42, .08);
            --shadow-lg: 0 18px 48px rgba(11, 31, 42, .12);
            --transition: all .25s ease;
            --font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }

        /* ============ Reset / Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font-family);
            background: var(--bg-light);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
            background: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -.02em;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ 按钮 ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 26px;
            border-radius: 50px;
            font-size: 15px;
            font-weight: 600;
            letter-spacing: .02em;
            cursor: pointer;
            border: 2px solid transparent;
            transition: var(--transition);
            text-align: center;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(12, 107, 95, .3);
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(12, 107, 95, .4);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(12, 107, 95, .3);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(12, 107, 95, .35);
            outline-offset: 3px;
        }
        .btn-outline {
            background: transparent;
            color: var(--white);
            border-color: rgba(255, 255, 255, .7);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
        }
        .btn-accent {
            background: var(--accent);
            color: var(--dark-bg);
            box-shadow: 0 4px 14px rgba(240, 179, 65, .35);
        }
        .btn-accent:hover {
            background: #e0a430;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(240, 179, 65, .45);
        }
        .btn-sm {
            padding: 8px 18px;
            font-size: 14px;
        }
        .btn-lg {
            padding: 16px 38px;
            font-size: 16px;
        }

        /* ============ Header / Nav ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(11, 31, 42, .04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            flex-wrap: nowrap;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(12, 107, 95, .3);
            letter-spacing: .02em;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 800;
            letterspacing: .02em;
            background: linear-gradient(120deg, var(--primary), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: nowrap;
        }
        .nav-link {
            position: relative;
            padding: 8px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 50px;
            white-space: nowrap;
            transition: var(--transition);
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(12, 107, 95, .06);
        }
        .nav-link.active {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 4px 14px rgba(12, 107, 95, .3);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 20px;
            color: var(--primary);
            background: rgba(12, 107, 95, .08);
            cursor: pointer;
            align-items: center;
            justify-content: center;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(12, 107, 95, .16);
        }
        .nav-toggle.active {
            background: var(--primary);
            color: #fff;
        }

        /* ============ Page Banner ============ */
        .page-banner {
            position: relative;
            background: linear-gradient(135deg, rgba(8, 74, 66, .92), rgba(11, 31, 42, .88)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 110px 0 90px;
            color: #fff;
            isolation: isolate;
        }
        .page-banner::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 80% 20%, rgba(240, 179, 65, .18), transparent 50%);
            z-index: -1;
        }
        .banner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .15);
            border: 1px solid rgba(255, 255, 255, .25);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: .08em;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .page-banner h1 {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 18px;
            letter-spacing: -.02em;
            line-height: 1.15;
        }
        .page-banner p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 580px;
            margin-bottom: 30px;
            line-height: 1.7;
        }
        .banner-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        /* ============ Section Header ============ */
        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(12, 107, 95, .08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: .08em;
            margin-bottom: 16px;
        }
        .section-header h2 {
            font-size: 34px;
            font-weight: 800;
            color: var(--dark-bg);
            margin-bottom: 12px;
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.7;
        }

        /* ============ Stats ============ */
        .stats-section {
            padding: 64px 0;
            background: var(--white);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(12, 107, 95, .3);
        }
        .stat-icon {
            width: 52px;
            height: 52px;
            margin: 0 auto 16px;
            border-radius: 14px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            box-shadow: 0 6px 16px rgba(12, 107, 95, .25);
        }
        .stat-num {
            font-size: 40px;
            font-weight: 800;
            color: var(--dark-bg);
            line-height: 1.2;
            letter-spacing: -.02em;
        }
        .stat-num span {
            font-size: 24px;
            margin-left: 2px;
        }
        .stat-label {
            margin-top: 6px;
            font-size: 15px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ============ Intro ============ */
        .intro-section {
            padding: 100px 0;
            background: var(--bg-light);
        }
        .intro-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }
        .intro-image img {
            width: 100%;
            aspect-ratio: 4/3;
            object-fit: cover;
        }
        .intro-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(11, 31, 42, .25), transparent 35%);
        }
        .intro-content h2 {
            font-size: 32px;
            margin-bottom: 18px;
            color: var(--dark-bg);
        }
        .intro-content>p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 28px;
        }
        .feature-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }
        .feature-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: var(--transition);
        }
        .feature-item:hover {
            border-color: rgba(12, 107, 95, .3);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        .feature-icon {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(12, 107, 95, .1);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .feature-text h4 {
            font-size: 15px;
            font-weight: 700;
            color: var(--dark-bg);
            margin-bottom: 4px;
        }
        .feature-text p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* ============ News Grid ============ */
        .news-section {
            padding: 100px 0;
            background: var(--white);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .news-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-6px);
            border-color: rgba(12, 107, 95, .25);
        }
        .news-card-image {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/9;
            background: var(--bg-light);
        }
        .news-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .news-card:hover .news-card-image img {
            transform: scale(1.05);
        }
        .news-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            background: rgba(255, 255, 255, .96);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 30px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, .12);
            backdrop-filter: blur(4px);
        }
        .news-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card-meta {
            display: flex;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }
        .news-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 5px;
        }
        .news-card-body h3 {
            font-size: 17px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 10px;
            color: var(--dark-bg);
        }
        .news-card-body h3 a:hover {
            color: var(--primary);
        }
        .news-card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .news-card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .news-card-link:hover {
            gap: 10px;
            color: var(--primary-dark);
        }

        /* ============ Ranking ============ */
        .ranking-section {
            padding: 100px 0;
            background: var(--dark-bg);
            color: #fff;
        }
        .ranking-section .section-tag {
            background: rgba(240, 179, 65, .15);
            color: var(--accent);
        }
        .ranking-section .section-header h2 {
            color: #fff;
        }
        .ranking-section .section-header p {
            color: rgba(255, 255, 255, .7);
        }
        .ranking-wrap {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 48px;
            align-items: start;
        }
        .ranking-list {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 20px 24px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
            transition: var(--transition);
        }
        .ranking-item:last-child {
            border-bottom: none;
        }
        .ranking-item:hover {
            background: rgba(255, 255, 255, .08);
        }
        .rank-num {
            font-size: 28px;
            font-weight: 800;
            width: 44px;
            text-align: center;
            color: rgba(255, 255, 255, .35);
            font-style: italic;
            flex-shrink: 0;
        }
        .ranking-item:nth-child(-n+3) .rank-num {
            color: var(--accent);
        }
        .rank-info {
            flex: 1;
            min-width: 0;
        }
        .rank-title {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 2px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .rank-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, .5);
        }
        .rank-trend {
            font-size: 13px;
            font-weight: 600;
            color: #67d5a3;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .rank-trend.down {
            color: #f07b7b;
        }
        .rank-tag {
            background: rgba(255, 255, 255, .12);
            color: rgba(255, 255, 255, .8);
            font-size: 12px;
            padding: 4px 12px;
            border-radius: 30px;
            flex-shrink: 0;
        }
        .hot-tags {
            background: rgba(255, 255, 255, .04);
            border: 1px solid rgba(255, 255, 255, .1);
            border-radius: var(--radius-lg);
            padding: 28px;
        }
        .hot-tags h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 18px;
            color: #fff;
        }
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .tag-item {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .12);
            color: rgba(255, 255, 255, .85);
            padding: 8px 18px;
            border-radius: 50px;
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }
        .tag-item:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: var(--dark-bg);
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 100px 0;
            background: var(--bg-light);
        }
        .faq-list {
            max-width: 860px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(12, 107, 95, .3);
            box-shadow: var(--shadow-sm);
        }
        .faq-item summary {
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--dark-bg);
            transition: var(--transition);
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary::after {
            content: "\f067";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 14px;
            color: var(--primary);
            background: rgba(12, 107, 95, .08);
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            flex-shrink: 0;
            transition: transform .3s ease;
        }
        .faq-item[open] summary::after {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }
        .faq-item .faq-content {
            padding: 0 24px 20px;
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.8;
        }

        /* ============ CTA ============ */
        .cta-section {
            position: relative;
            padding: 100px 0;
            background: linear-gradient(135deg, rgba(8, 74, 66, .94), rgba(11, 31, 42, .92)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
            isolation: isolate;
        }
        .cta-section::before {
            content: "";
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(240, 179, 65, .15), transparent 45%);
            z-index: -1;
        }
        .cta-section h2 {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 560px;
            margin: 0 auto 36px;
        }
        .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: var(--dark-bg);
            color: rgba(255, 255, 255, .7);
            padding: 72px 0 28px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 44px;
            border-bottom: 1px solid rgba(255, 255, 255, .1);
        }
        .footer-logo {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            display: inline-block;
            margin-bottom: 16px;
            letter-spacing: .02em;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
            letter-spacing: .04em;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: var(--transition);
        }
        .footer-col ul a:hover {
            color: var(--accent);
            padding-left: 4px;
        }
        .footer-contact-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            margin-bottom: 12px;
        }
        .footer-contact-item i {
            color: var(--accent);
            width: 16px;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .intro-grid {
                gap: 36px;
            }
            .ranking-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                height: auto;
                flex-wrap: wrap;
                padding-top: 14px;
                padding-bottom: 14px;
                position: relative;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
                padding: 16px 0 8px;
            }
            .main-nav.nav-open {
                display: flex;
            }
            .nav-link {
                width: 100%;
                padding: 12px 16px;
                border-radius: var(--radius-sm);
            }
            .nav-link.active {
                background: var(--primary);
                color: #fff;
                box-shadow: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .header-actions .btn-sm {
                display: none;
            }
            .page-banner {
                padding: 80px 0 64px;
            }
            .page-banner h1 {
                font-size: 34px;
            }
            .page-banner p {
                font-size: 15px;
            }
            .banner-btns {
                flex-direction: column;
                align-items: flex-start;
            }
            .stats-grid {
                gap: 16px;
            }
            .stat-card {
                padding: 24px 16px;
            }
            .stat-num {
                font-size: 30px;
            }
            .intro-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 26px;
            }
            .feature-list {
                grid-template-columns: 1fr;
            }
            .faq-item summary {
                font-size: 14px;
                padding: 16px 18px;
            }
            .faq-item .faq-content {
                padding: 0 18px 16px;
                font-size: 13px;
            }
            .cta-section {
                padding: 72px 0;
            }
            .cta-section h2 {
                font-size: 28px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .logo-text {
                font-size: 17px;
            }
            .logo-badge {
                width: 36px;
                height: 36px;
                font-size: 15px;
            }
            .header-inner {
                padding-top: 10px;
                padding-bottom: 10px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .stat-icon {
                width: 42px;
                height: 42px;
                font-size: 18px;
            }
            .stat-num {
                font-size: 24px;
            }
            .stat-label {
                font-size: 13px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .ranking-item {
                flex-wrap: wrap;
                padding: 16px;
                gap: 12px;
            }
            .rank-tag {
                order: 3;
            }
            .rank-trend {
                order: 2;
            }
            .rank-title {
                white-space: normal;
                line-height: 1.4;
            }
        }
        @media (max-width: 360px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
            .btn {
                width: 100%;
            }
        }