/* roulang page: index */
:root {
  --bg: #F4F8FC;
  --surface: #FFFFFF;
  --primary: #1E56A0;
  --primary-deep: #153E74;
  --primary-weak: #EAF1F8;
  --accent: #F57C2F;
  --accent-hover: #D9661B;
  --text-main: #1F2D3D;
  --text-secondary: #5E6E80;
  --border: #E3E9F0;
  --success: #1E9E8E;
  --radius-card: 12px;
  --radius-btn: 8px;
  --shadow-card: 0 4px 16px rgba(21,62,116,0.08);
  --shadow-hover: 0 10px 28px rgba(21,62,116,0.14);
  --space-section: 96px;
  --font-main: "PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
}
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; outline: none; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color .2s ease; }
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
ul, ol { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding-left: 24px; padding-right: 24px; }
.section-padding { padding: var(--space-section) 0; }
.text-secondary { color: var(--text-secondary); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-main);
  font-size: 15px;
  font-weight: 600;
  height: 44px;
  padding: 0 28px;
  border-radius: var(--radius-btn);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all .2s ease;
  line-height: 1;
  white-space: nowrap;
}
.btn-accent {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px rgba(245,124,47,0.25);
}
.btn-accent:hover {
  background: var(--accent-hover);
  box-shadow: 0 6px 18px rgba(245,124,47,0.35);
  transform: translateY(-1px);
}
.btn-primary-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-primary-outline:hover {
  background: var(--primary-weak);
  border-color: var(--primary-deep);
}
.btn-lg { height: 52px; padding: 0 36px; font-size: 16px; border-radius: 10px; }
.btn-sm { height: 40px; padding: 0 20px; font-size: 14px; }

/* ---------- Header / Nav ---------- */
.site-header {
  background: #fff;
  height: 72px;
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border);
  transition: box-shadow .25s ease;
}
.site-header.scrolled { box-shadow: 0 2px 20px rgba(21,62,116,0.10); }
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 1;
}
.logo .logo-badge {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: 48px;
  flex: 1;
}
.main-nav .nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  position: relative;
  padding: 28px 0;
  transition: color .2s ease;
}
.main-nav .nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 18px;
  width: 0;
  height: 3px;
  border-radius: 3px;
  background: var(--accent);
  transition: width .25s ease;
}
.main-nav .nav-link:hover { color: var(--primary); }
.main-nav .nav-link:hover::after { width: 100%; }
.main-nav .nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.main-nav .nav-link.active::after { width: 100%; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}
.hamburger {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  color: var(--primary);
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 8px;
}
.hamburger:hover { background: var(--primary-weak); }
.mobile-menu {
  display: none;
  background: #fff;
  border-top: 1px solid var(--border);
  padding: 16px 24px 24px;
  box-shadow: 0 10px 30px rgba(21,62,116,0.10);
}
.mobile-menu .mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 16px;
}
.mobile-menu .mobile-nav-links a {
  padding: 12px 12px;
  border-radius: 8px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
}
.mobile-menu .mobile-nav-links a:hover,
.mobile-menu .mobile-nav-links a.active { background: var(--primary-weak); color: var(--primary); }
.mobile-menu .mobile-cta { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, #F4F8FC 0%, #EAF1F8 60%, #F0F6FB 100%);
  padding: 88px 0 72px;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: -80px;
  width: 55%;
  height: 100%;
  background: url('/assets/images/backpic/back-1.webp') no-repeat center/cover;
  opacity: 0.22;
  transform: rotate(2deg);
}
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 140px;
  background: linear-gradient(to top, rgba(255,255,255,0.6), transparent);
  pointer-events: none;
}
.hero .container { position: relative; z-index: 2; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(30,86,160,0.12);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 30px;
  margin-bottom: 20px;
}
.hero-tag i { font-size: 12px; }
.hero h1 {
  font-size: 46px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero h1 .hl {
  color: var(--primary);
  background: rgba(30,86,160,0.12);
  padding: 2px 8px;
  border-radius: 6px;
  display: inline-block;
}
.hero-sub {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 32px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-visual {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-hover);
  background: #fff;
  padding: 12px;
}
.hero-visual img { border-radius: 12px; width: 100%; height: auto; }
.hero-stats {
  margin-top: 56px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  background: #fff;
  border-radius: var(--radius-card);
  padding: 28px 32px;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(227,233,240,0.7);
}
.hero-stat {
  display: flex;
  align-items: center;
  gap: 16px;
}
.hero-stat .stat-icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: var(--primary-weak);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}
.hero-stat .stat-num { font-size: 26px; font-weight: 700; color: var(--primary); line-height: 1.2; }
.hero-stat .stat-label { font-size: 13px; color: var(--text-secondary); }

/* ---------- 通用板块标题 ---------- */
.section-title-wrap { text-align: center; margin-bottom: 56px; }
.section-label {
  display: inline-block;
  background: var(--primary-weak);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.section-title { font-size: 34px; font-weight: 700; color: var(--text-main); line-height: 1.3; margin-bottom: 16px; }
.section-desc { font-size: 16px; color: var(--text-secondary); max-width: 680px; margin: 0 auto; line-height: 1.8; }

/* ---------- 功能分组区 ---------- */
.features-section { background: var(--surface); }
.feature-main-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; margin-bottom: 24px; }
.feature-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 36px;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
  position: relative;
  overflow: hidden;
}
.feature-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.feature-card-big { display: flex; flex-direction: column; justify-content: center; }
.feature-card-big .feature-img {
  width: 100%;
  height: 240px;
  border-radius: 10px;
  object-fit: cover;
  margin-bottom: 24px;
}
.feature-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-weak);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 18px;
  transition: all .25s ease;
}
.feature-card:hover .feature-icon-wrap {
  background: var(--primary);
  color: #fff;
}
.feature-card h3 { font-size: 20px; font-weight: 600; color: var(--text-main); margin-bottom: 10px; }
.feature-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.feature-card-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.feature-card-link i { transition: transform .2s ease; }
.feature-card-link:hover i { transform: translateX(4px); }
.feature-side { display: flex; flex-direction: column; gap: 24px; }
.feature-small-card {
  flex: 1;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}
.feature-small-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.feature-small-card .fs-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: rgba(245,124,47,0.12);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  flex-shrink: 0;
}
.feature-small-card .fs-body h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; color: var(--text-main); }
.feature-small-card .fs-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.7; }
.feature-bottom-row { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }

/* ---------- 使用场景 ---------- */
.scenario-row { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; margin-bottom: 80px; }
.scenario-row:last-child { margin-bottom: 0; }
.scenario-row.reverse .scenario-img { order: 2; }
.scenario-row.reverse .scenario-content { order: 1; }
.scenario-img {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border);
  position: relative;
}
.scenario-img img { width: 100%; height: 300px; object-fit: cover; }
.scenario-img .img-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background: rgba(255,255,255,0.92);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  backdrop-filter: blur(4px);
}
.scenario-content .scenario-label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
}
.scenario-content h3 { font-size: 28px; font-weight: 700; color: var(--text-main); line-height: 1.35; margin-bottom: 16px; }
.scenario-content p { font-size: 15px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 24px; }
.scenario-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}
.scenario-link:hover { border-bottom-color: var(--primary); }
.scenario-link i { transition: transform .2s ease; }
.scenario-link:hover i { transform: translateX(4px); }

/* ---------- 成功案例 ---------- */
.cases-section { background: var(--surface); }
.cases-grid { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 24px; }
.case-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
}
.case-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.case-card .case-img { width: 100%; height: 180px; object-fit: cover; }
.case-card .case-body { padding: 24px 28px; }
.case-card .case-category { font-size: 12px; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 8px; }
.case-card h4 { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 10px; line-height: 1.5; }
.case-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 16px; }
.case-metrics {
  display: flex;
  align-items: baseline;
  gap: 8px;
  border-top: 1px solid var(--border);
  padding-top: 16px;
  margin-top: 4px;
}
.case-metrics .metric-num { font-size: 26px; font-weight: 700; color: var(--success); }
.case-metrics .metric-label { font-size: 13px; color: var(--text-secondary); }
.case-summary-card { border: none; background: var(--primary-deep); color: #fff; }
.case-summary-card .case-body { padding: 36px; }
.case-summary-card h4 { font-size: 20px; color: #fff; margin-bottom: 16px; }
.case-summary-card p { color: rgba(255,255,255,0.75); }
.summary-list { margin-top: 20px; }
.summary-list li { display: flex; align-items: center; gap: 12px; padding: 8px 0; font-size: 14px; color: rgba(255,255,255,0.9); border-bottom: 1px solid rgba(255,255,255,0.1); }
.summary-list li:last-child { border-bottom: none; }
.summary-list li i { color: var(--accent); font-size: 14px; width: 18px; }

/* ---------- 价格方案 ---------- */
.pricing-section { background: var(--bg); }
.pricing-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: stretch; }
.pricing-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 36px 32px;
  position: relative;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  transition: all .25s ease;
}
.pricing-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.pricing-card .plan-name { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 12px; }
.pricing-card .plan-price { font-size: 40px; font-weight: 700; color: var(--primary); margin-bottom: 8px; line-height: 1.2; }
.pricing-card .plan-price span { font-size: 16px; font-weight: 400; color: var(--text-secondary); }
.pricing-card .plan-desc { font-size: 14px; color: var(--text-secondary); margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px solid var(--border); }
.pricing-card .plan-features { margin-bottom: 28px; flex: 1; }
.pricing-card .plan-features li { display: flex; align-items: center; gap: 10px; padding: 7px 0; font-size: 14px; color: var(--text-main); }
.pricing-card .plan-features li i { color: var(--success); font-size: 14px; }
.pricing-card .btn { width: 100%; }
.pricing-card.recommended {
  background: var(--primary-deep);
  border-color: var(--primary-deep);
  box-shadow: 0 12px 40px rgba(21,62,116,0.25);
  transform: scale(1.03);
}
.pricing-card.recommended:hover { transform: scale(1.03) translateY(-4px); }
.pricing-card.recommended .plan-name,
.pricing-card.recommended .plan-price,
.pricing-card.recommended .plan-price span,
.pricing-card.recommended .plan-desc,
.pricing-card.recommended .plan-features li { color: #fff; }
.pricing-card.recommended .plan-desc { border-bottom-color: rgba(255,255,255,0.15); }
.pricing-card.recommended .plan-features li i { color: var(--accent); }
.recommended-tag {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  padding: 4px 20px;
  border-radius: 20px;
  white-space: nowrap;
  box-shadow: 0 4px 12px rgba(245,124,47,0.3);
}

/* ---------- 最新动态 / CMS ---------- */
.news-section { background: var(--surface); }
.news-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 40px;
}
.news-header h2 { font-size: 32px; font-weight: 700; color: var(--text-main); }
.news-header .view-all {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  border: 1px solid var(--primary);
  border-radius: 30px;
  transition: all .2s ease;
}
.news-header .view-all:hover { background: var(--primary); color: #fff; }
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  box-shadow: var(--shadow-card);
  transition: all .25s ease;
}
.news-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); }
.news-item .news-tag {
  display: inline-block;
  background: var(--primary-weak);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 12px;
  border-radius: 4px;
  margin-bottom: 8px;
}
.news-item h3 { font-size: 18px; font-weight: 600; color: var(--text-main); margin-bottom: 6px; transition: color .2s ease; }
.news-item:hover h3 { color: var(--primary); }
.news-item .news-summary {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.news-meta { display: flex; align-items: center; gap: 16px; margin-top: 10px; }
.news-meta .date { font-size: 13px; color: var(--text-secondary); }
.news-item .news-arrow {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-weak);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all .25s ease;
}
.news-item:hover .news-arrow { background: var(--primary); color: #fff; }
.news-empty {
  border: 2px dashed var(--border);
  border-radius: var(--radius-card);
  padding: 60px 24px;
  text-align: center;
  background: #fafcfe;
}
.news-empty i { font-size: 32px; color: #b8c7d6; margin-bottom: 12px; }
.news-empty p { font-size: 15px; color: var(--text-secondary); }

/* ---------- FAQ ---------- */
.faq-section { background: var(--bg); }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; max-width: 1080px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  padding: 24px 28px;
  box-shadow: var(--shadow-card);
  cursor: pointer;
  transition: all .25s ease;
}
.faq-item:hover { box-shadow: var(--shadow-hover); border-color: rgba(30,86,160,0.25); }
.faq-item .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
}
.faq-item .faq-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--primary-weak);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: all .3s ease;
}
.faq-item.open .faq-icon { background: var(--accent); color: #fff; transform: rotate(45deg); }
.faq-item .faq-a {
  display: none;
  padding-top: 16px;
  margin-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.85;
}

/* ---------- 底部 CTA ---------- */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #EAF1F8 0%, #DCE9F4 100%);
  padding: 72px 0;
  text-align: center;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.webp') no-repeat center/cover;
  opacity: 0.25;
}
.cta-section .container { position: relative; z-index: 2; }
.cta-section h2 { font-size: 32px; font-weight: 700; color: var(--text-main); margin-bottom: 16px; }
.cta-section p { font-size: 16px; color: var(--text-secondary); margin-bottom: 32px; max-width: 560px; margin-left: auto; margin-right: auto; }

/* ---------- Footer ---------- */
.site-footer { background: var(--primary-deep); color: rgba(255,255,255,0.75); padding-top: 64px; }
.footer-top { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px; padding-bottom: 48px; }
.footer-brand .logo { color: #fff; margin-bottom: 16px; }
.footer-brand .logo .logo-badge { background: rgba(255,255,255,0.15); color: #fff; }
.footer-brand p { font-size: 14px; line-height: 1.8; color: rgba(255,255,255,0.6); max-width: 320px; margin-bottom: 20px; }
.footer-col h4 {
  font-size: 16px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 14px; color: rgba(255,255,255,0.6); transition: all .2s ease; }
.footer-col ul li a:hover { color: var(--accent); padding-left: 4px; }
.footer-contact li { display: flex; align-items: flex-start; gap: 10px; font-size: 14px; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.footer-contact li i { color: var(--accent); margin-top: 5px; font-size: 13px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 20px 0;
  background: rgba(15,36,54,0.6);
  text-align: center;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-bottom span { margin: 0 8px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1024px) {
  :root { --space-section: 72px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero h1 { font-size: 38px; }
  .hero-visual { max-width: 640px; }
  .feature-main-grid { grid-template-columns: 1.5fr 1fr; }
  .cases-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; gap: 32px; max-width: 560px; margin: 0 auto; }
  .pricing-card.recommended { transform: none; }
  .pricing-card.recommended:hover { transform: translateY(-4px); }
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 768px) {
  :root { --space-section: 56px; }
  .container { padding-left: 16px; padding-right: 16px; }
  .main-nav { display: none; }
  .hamburger { display: flex; align-items: center; justify-content: center; }
  .mobile-menu.open { display: block; }
  .header-actions .btn { display: none; }
  .header-actions { gap: 8px; }
  .hero { padding: 60px 0; }
  .hero h1 { font-size: 32px; line-height: 1.3; }
  .hero-sub { font-size: 15px; }
  .hero-stats { grid-template-columns: 1fr; gap: 16px; padding: 20px; }
  .hero-stat { padding: 12px 0; }
  .feature-main-grid { grid-template-columns: 1fr; }
  .feature-bottom-row { grid-template-columns: 1fr; }
  .scenario-row { grid-template-columns: 1fr; gap: 32px; margin-bottom: 48px; }
  .scenario-row.reverse .scenario-img { order: 0; }
  .scenario-row.reverse .scenario-content { order: 0; }
  .scenario-img img { height: 220px; }
  .cases-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .news-item { flex-direction: column; align-items: flex-start; gap: 16px; padding: 20px; }
  .news-item .news-arrow { align-self: flex-end; }
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .section-title { font-size: 28px; }
  .cta-section h2 { font-size: 26px; }
  .news-header h2 { font-size: 26px; }
}
@media (max-width: 520px) {
  .container { padding-left: 12px; padding-right: 12px; }
  .hero h1 { font-size: 28px; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; }
  .feature-card { padding: 24px; }
  .feature-small-card { padding: 18px; flex-direction: column; }
  .feature-card-big .feature-img { height: 180px; }
  .pricing-card { padding: 28px 22px; }
  .case-card .case-img { height: 160px; }
  .news-header { flex-direction: column; align-items: flex-start; gap: 16px; }
  .recommended-tag { top: -12px; font-size: 12px; padding: 3px 14px; }
}

/* roulang page: article */
:root {
  --bg: #F4F8FC;
  --surface: #FFFFFF;
  --primary: #1E56A0;
  --primary-deep: #153E74;
  --primary-weak: #EAF1F8;
  --accent: #F57C2F;
  --accent-hover: #D9661B;
  --text-main: #1F2D3D;
  --text-secondary: #5E6E80;
  --border: #E3E9F0;
  --success: #1E9E8E;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(21, 62, 116, 0.08);
  --shadow-lg: 0 10px 28px rgba(21, 62, 116, 0.14);
  --transition: 0.2s ease;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
  background: var(--bg);
  color: var(--text-main);
  line-height: 1.7;
  font-size: 16px;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: var(--primary); transition: color var(--transition); }
a:hover { color: var(--accent); }
ul, ol { list-style: none; }
button, input, textarea { font-family: inherit; font-size: inherit; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

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

/* ========== Header / Nav ========== */
.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 72px;
  box-shadow: 0 1px 4px rgba(21, 62, 116, 0.06);
  transition: box-shadow var(--transition);
}
.site-header.scrolled { box-shadow: 0 4px 20px rgba(21, 62, 116, 0.10); }
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}
.logo:hover { color: var(--primary); }
.logo-badge {
  width: 36px;
  height: 36px;
  background: var(--primary-weak);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 16px;
}

.main-nav { display: flex; align-items: center; gap: 8px; }
.main-nav .nav-link {
  padding: 8px 14px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 6px;
  transition: all var(--transition);
}
.main-nav .nav-link:hover { color: var(--primary); background: var(--primary-weak); }
.main-nav .nav-link.active { color: var(--primary); font-weight: 600; background: rgba(30, 86, 160, 0.08); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  padding: 0 20px;
  height: 40px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
  white-space: nowrap;
}
.nav-cta:hover { background: var(--accent-hover); color: #fff; transform: translateY(-1px); }
.nav-cta i { font-size: 14px; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  width: 44px;
  height: 44px;
  border-radius: 8px;
  font-size: 20px;
  color: var(--text-main);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover { background: var(--primary-weak); }

/* ========== Breadcrumb ========== */
.breadcrumb-wrap {
  background: transparent;
  padding: 20px 0 0;
}
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
}
.breadcrumb a { color: var(--text-secondary); }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .separator { color: var(--border); font-size: 12px; }
.breadcrumb .current { color: var(--primary); font-weight: 500; }

/* ========== Article Hero ========== */
.article-hero {
  padding: 36px 0 32px;
  background: linear-gradient(to bottom, var(--bg), #edf3f9);
  border-bottom: 1px solid var(--border);
}
.article-hero .article-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin-bottom: 16px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 14px;
  color: var(--text-secondary);
}
.article-meta .meta-item { display: flex; align-items: center; gap: 6px; }
.article-meta .meta-item i { color: var(--primary); width: 14px; text-align: center; }
.meta-category {
  display: inline-block;
  background: var(--primary-weak);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  padding: 4px 12px;
  border-radius: 4px;
}

/* ========== Article Body ========== */
.article-main { padding: 48px 0 64px; }
.article-body-wrap {
  max-width: 760px;
  margin: 0 auto;
}

.article-content {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-main);
  background: var(--surface);
  padding: 48px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.article-content h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--primary-deep);
  margin: 36px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}
.article-content h3 {
  font-size: 20px;
  font-weight: 600;
  color: var(--primary);
  margin: 28px 0 12px;
}
.article-content p { margin-bottom: 16px; }
.article-content ul, .article-content ol { margin: 0 0 16px 0; padding-left: 0; }
.article-content ul li {
  padding-left: 24px;
  position: relative;
  margin-bottom: 8px;
}
.article-content ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
}
.article-content ol { counter-reset: article-ol; }
.article-content ol li {
  counter-increment: article-ol;
  padding-left: 32px;
  position: relative;
  margin-bottom: 8px;
}
.article-content ol li::before {
  content: counter(article-ol);
  position: absolute;
  left: 4px;
  top: 0;
  width: 20px;
  height: 20px;
  background: var(--primary-weak);
  color: var(--primary);
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
  text-align: center;
  line-height: 20px;
}
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-weak);
  padding: 16px 20px;
  margin: 20px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: normal;
}
.article-content blockquote p:last-child { margin-bottom: 0; }
.article-content img { border-radius: var(--radius); margin: 20px 0; }
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}
.article-content table th,
.article-content table td {
  border: 1px solid var(--border);
  padding: 10px 14px;
  text-align: left;
}
.article-content table th { background: var(--primary-weak); color: var(--primary); font-weight: 600; }
.article-content table tr:nth-child(even) { background: var(--bg); }
.article-content code {
  background: var(--primary-weak);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 14px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
.article-content pre {
  background: var(--text-main);
  color: #eaf1f8;
  padding: 20px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  margin: 20px 0;
  font-size: 14px;
  line-height: 1.6;
}

/* ========== Article Divider / Nav ========== */
.article-bottom-nav {
  max-width: 760px;
  margin: 24px auto 0;
  padding: 24px;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.article-bottom-nav a {
  font-size: 15px;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition);
}
.article-bottom-nav a:hover { color: var(--accent); }
.article-bottom-nav .prev i { font-size: 12px; }
.article-bottom-nav .next { margin-left: auto; }

/* ========== Related Section ========== */
.related-section { padding: 56px 0 24px; }
.section-head {
  max-width: 760px;
  margin: 0 auto 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.section-head h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-main);
  position: relative;
  padding-left: 16px;
}
.section-head h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 24px;
  background: var(--accent);
  border-radius: 2px;
}
.section-link { font-size: 14px; font-weight: 500; }

.related-grid {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.related-card {
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: box-shadow var(--transition), transform var(--transition);
  display: block;
}
.related-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.related-card img { width: 100%; height: 140px; object-fit: cover; }
.related-card-body { padding: 16px; }
.related-card-body h4 {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}
.related-card:hover h4 { color: var(--primary); }
.related-card-body .date { font-size: 13px; color: var(--text-secondary); display: flex; align-items: center; gap: 6px; }

/* ========== Back to Index ========== */
.back-section {
  padding: 32px 0 80px;
  text-align: center;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  border: 1px solid var(--primary);
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  height: 44px;
  padding: 0 24px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
}
.btn-secondary:hover {
  background: var(--primary-weak);
  transform: translateY(-1px);
}

/* ========== Not Found ========== */
.not-found-wrap {
  max-width: 760px;
  margin: 0 auto;
  background: var(--surface);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  padding: 80px 40px;
  text-align: center;
}
.not-found-icon {
  font-size: 48px;
  color: var(--primary);
  margin-bottom: 16px;
}
.not-found-wrap h2 { font-size: 24px; font-weight: 600; color: var(--text-main); margin-bottom: 12px; }
.not-found-wrap p { color: var(--text-secondary); margin-bottom: 24px; }

/* ========== CTA Section ========== */
.cta-section {
  padding: 64px 0;
  background: linear-gradient(135deg, var(--bg), var(--primary-weak));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  background-blend-mode: soft-light;
}
.cta-inner {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.cta-inner h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}
.cta-inner p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  height: 52px;
  padding: 0 32px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  transform: translateY(-2px);
}
.btn-primary i { font-size: 14px; }

/* ========== Footer ========== */
.site-footer {
  background: var(--primary-deep);
  color: #B8C7DA;
  padding: 64px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
  font-size: 18px;
}
.footer-brand .logo-badge {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
}
.footer-brand > p {
  font-size: 14px;
  line-height: 1.8;
  color: #9AACBF;
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
}
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a {
  color: #B8C7DA;
  font-size: 14px;
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: var(--accent); }
.footer-contact li { display: flex; align-items: center; gap: 8px; font-size: 14px; color: #B8C7DA; }
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 20px 0;
  font-size: 13px;
  color: #8FA3B8;
  flex-wrap: wrap;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

/* ========== Responsive ========== */
@media screen and (max-width: 1024px) {
  .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
  .related-grid { gap: 16px; }
}

@media screen and (max-width: 768px) {
  .header-inner { padding: 0 16px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--surface);
    padding: 16px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    box-shadow: 0 8px 24px rgba(21, 62, 116, 0.12);
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open { display: flex; }
  .main-nav .nav-link { padding: 12px 16px; }
  .nav-cta { height: 40px; padding: 0 16px; font-size: 14px; }
  .nav-cta span { display: none; }
  .nav-cta i { margin: 0; }
  .nav-toggle { display: inline-flex; }
  
  .article-hero .article-title { font-size: 26px; }
  .article-content { padding: 28px 20px; }
  .article-meta { gap: 12px; }
  
  .related-grid { grid-template-columns: 1fr; }
  .related-card { display: flex; align-items: center; }
  .related-card img { width: 100px; height: 100px; }
  .related-card-body { flex: 1; padding: 14px; }
  .related-card-body h4 { max-width: 100%; }
  
  .article-bottom-nav { flex-direction: column; align-items: flex-start; gap: 12px; }
  
  .footer-top { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom span { white-space: nowrap; }
  .cta-inner h2 { font-size: 24px; }
}

@media screen and (max-width: 520px) {
  .container { padding: 0 16px; }
  .header-inner { gap: 12px; }
  .logo { font-size: 14px; gap: 6px; }
  .logo-badge { width: 30px; height: 30px; font-size: 14px; }
}

/* roulang page: category1 */
:root {
      --bg: #F4F8FC;
      --surface: #FFFFFF;
      --primary: #1E56A0;
      --primary-deep: #153E74;
      --primary-weak: #EAF1F8;
      --accent: #F57C2F;
      --accent-hover: #D9661B;
      --text-main: #1F2D3D;
      --text-secondary: #5E6E80;
      --border: #E3E9F0;
      --success: #1E9E8E;
      --radius: 12px;
      --radius-sm: 8px;
      --shadow: 0 4px 16px rgba(21, 62, 116, 0.08);
      --shadow-hover: 0 10px 28px rgba(21, 62, 116, 0.14);
      --transition: all 0.25s ease;
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    }

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

    body {
      margin: 0;
      font-family: var(--font-family);
      font-size: 15px;
      line-height: 1.7;
      color: var(--text-main);
      background: var(--bg);
      -webkit-font-smoothing: antialiased;
    }

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

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

    a:hover {
      color: var(--primary-deep);
    }

    ul, ol {
      margin: 0;
      padding: 0;
      list-style: none;
    }

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

    button {
      cursor: pointer;
    }

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

    .grid-x.grid-padding-x {
      margin-left: -12px;
      margin-right: -12px;
    }

    .grid-x.grid-padding-x > .cell {
      padding-left: 12px;
      padding-right: 12px;
    }

    section {
      padding: 84px 0;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      box-shadow: 0 1px 8px rgba(21, 62, 116, 0.04);
    }

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

    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 17px;
      font-weight: 700;
      color: var(--text-main);
      white-space: nowrap;
    }

    .logo:hover {
      color: var(--text-main);
    }

    .logo-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: var(--primary);
      color: #fff;
      font-size: 15px;
      flex-shrink: 0;
    }

    .logo-badge i {
      font-size: 15px;
    }

    .main-nav {
      display: flex;
      align-items: center;
      gap: 30px;
      margin: 0 auto;
    }

    .main-nav .nav-link {
      position: relative;
      padding: 8px 2px;
      color: var(--text-main);
      font-size: 15px;
      font-weight: 500;
      line-height: 1.2;
    }

    .main-nav .nav-link::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 100%;
      height: 2px;
      border-radius: 2px;
      background: var(--primary);
      transform: scaleX(0);
      transform-origin: left;
      transition: transform 0.25s ease;
    }

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

    .main-nav .nav-link:hover::after,
    .main-nav .nav-link.active::after {
      transform: scaleX(1);
    }

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

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      padding: 13px 28px;
      border-radius: var(--radius-sm);
      border: none;
      font-size: 15px;
      font-weight: 600;
      line-height: 1;
      transition: var(--transition);
      cursor: pointer;
      white-space: nowrap;
    }

    .btn-primary {
      background: var(--accent);
      color: #fff;
    }

    .btn-primary:hover {
      background: var(--accent-hover);
      transform: translateY(-1px);
      box-shadow: 0 6px 18px rgba(245, 124, 47, 0.32);
    }

    .btn-primary:active {
      transform: translateY(0);
      box-shadow: 0 3px 10px rgba(245, 124, 47, 0.26);
    }

    .btn-header {
      height: 40px;
      padding: 0 22px;
      font-size: 14px;
      flex-shrink: 0;
    }

    .btn-lg {
      height: 52px;
      padding: 0 38px;
      font-size: 16px;
      border-radius: 10px;
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      font-size: 22px;
      color: var(--text-main);
      padding: 6px 10px;
      border-radius: 6px;
      transition: background 0.2s;
    }

    .nav-toggle:hover {
      background: var(--primary-weak);
    }

    .page-banner {
      position: relative;
      background-color: var(--primary-weak);
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      padding: 90px 0;
      border-bottom: 1px solid var(--border);
    }

    .page-banner::before {
      content: '';
      position: absolute;
      inset: 0;
      background: rgba(234, 241, 248, 0.88);
    }

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

    .banner-content {
      max-width: 740px;
      margin: 0 auto;
      text-align: center;
    }

    .banner-tag {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: var(--surface);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 8px 18px;
      border-radius: 30px;
      box-shadow: var(--shadow);
      margin-bottom: 20px;
    }

    .page-banner h1 {
      margin: 0 0 14px;
      font-size: 42px;
      font-weight: 700;
      line-height: 1.2;
      color: var(--text-main);
      letter-spacing: 0.5px;
    }

    .page-banner p {
      margin: 0;
      font-size: 17px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .section-header {
      max-width: 660px;
      margin: 0 auto 52px;
      text-align: center;
    }

    .section-eyebrow {
      display: inline-block;
      background: var(--primary-weak);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 16px;
      border-radius: 4px;
      margin-bottom: 12px;
      letter-spacing: 0.3px;
    }

    .section-header h2 {
      margin: 0 0 12px;
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-main);
    }

    .section-header p {
      margin: 0;
      font-size: 15px;
      color: var(--text-secondary);
    }

    .intro-section {
      background: var(--surface);
      border-bottom: 1px solid var(--border);
    }

    .intro-content h2 {
      font-size: 32px;
      font-weight: 700;
      margin: 0 0 16px;
      line-height: 1.3;
      color: var(--text-main);
    }

    .intro-content > p {
      margin: 0 0 24px;
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.9;
    }

    .check-list {
      margin-bottom: 28px;
    }

    .check-list li {
      display: flex;
      align-items: flex-start;
      gap: 10px;
      padding: 7px 0;
      font-size: 15px;
      color: var(--text-main);
    }

    .check-list li i {
      color: var(--success);
      font-size: 17px;
      margin-top: 2px;
    }

    .steps-inline {
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 20px;
      margin-top: 8px;
    }

    .step-item {
      background: var(--bg);
      border-radius: var(--radius-sm);
      padding: 20px;
      border: 1px solid var(--border);
    }

    .step-num {
      display: inline-block;
      font-size: 24px;
      font-weight: 700;
      color: var(--primary);
      margin-bottom: 8px;
      line-height: 1;
    }

    .step-item h4 {
      margin: 0 0 6px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
    }

    .step-item p {
      margin: 0;
      font-size: 13px;
      color: var(--text-secondary);
      line-height: 1.7;
    }

    .intro-image {
      width: 100%;
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      object-fit: cover;
      min-height: 320px;
    }

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

    .topic-card {
      display: flex;
      flex-direction: column;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      overflow: hidden;
      height: 100%;
      transition: var(--transition);
    }

    .topic-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .topic-card-lg img {
      width: 100%;
      height: 210px;
      object-fit: cover;
    }

    .topic-card-body {
      display: flex;
      flex-direction: column;
      gap: 12px;
      flex: 1;
      padding: 28px;
    }

    .topic-card-sm .topic-card-body {
      padding: 24px;
    }

    .topic-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-weak);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      margin-bottom: 4px;
    }

    .topic-card h3 {
      margin: 0;
      font-size: 18px;
      font-weight: 600;
      line-height: 1.4;
      color: var(--text-main);
    }

    .topic-card p {
      margin: 0;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
      flex: 1;
    }

    .topic-card-full {
      margin-top: 24px;
    }

    .topic-card-right {
      display: flex;
      flex-direction: column;
      height: 100%;
    }

    .topic-card-right .topic-card + .topic-card {
      margin-top: 24px;
    }

    .tag {
      display: inline-block;
      background: var(--primary-weak);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 4px;
      line-height: 1.6;
      align-self: flex-start;
    }

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

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

    .text-link i {
      font-size: 12px;
    }

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

    .detail-block {
      padding: 20px 0;
    }

    .detail-block + .detail-block {
      margin-top: 48px;
    }

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

    .detail-text {
      padding: 24px 0;
    }

    .scenario-tag {
      display: inline-block;
      background: var(--primary-weak);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      padding: 6px 14px;
      border-radius: 30px;
      margin-bottom: 16px;
    }

    .detail-text h3 {
      margin: 0 0 14px;
      font-size: 24px;
      font-weight: 700;
      line-height: 1.4;
      color: var(--text-main);
    }

    .detail-text p {
      margin: 0;
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.9;
    }

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

    .post-card {
      display: flex;
      flex-direction: column;
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      overflow: hidden;
      height: 100%;
      box-shadow: var(--shadow);
      transition: var(--transition);
    }

    .post-card:hover {
      box-shadow: var(--shadow-hover);
      transform: translateY(-3px);
    }

    .post-card img {
      width: 100%;
      height: 160px;
      object-fit: cover;
    }

    .post-card-body {
      display: flex;
      flex-direction: column;
      flex: 1;
      padding: 22px;
    }

    .post-card-body .tag {
      margin-bottom: 12px;
    }

    .post-card-body h3 {
      margin: 0 0 10px;
      font-size: 16px;
      font-weight: 600;
      line-height: 1.5;
      color: var(--text-main);
    }

    .post-card-body p {
      margin: 0;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.7;
      flex: 1;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }

    .post-date {
      display: flex;
      align-items: center;
      gap: 6px;
      margin-top: 16px;
      font-size: 13px;
      color: var(--text-secondary);
    }

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

    .faq-list {
      max-width: 900px;
      margin: 0 auto;
    }

    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.25s, box-shadow 0.25s;
    }

    .faq-item.active {
      border-color: var(--primary);
      box-shadow: 0 2px 12px rgba(30, 86, 160, 0.08);
    }

    .faq-question {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 20px 24px;
      cursor: pointer;
      font-size: 16px;
      font-weight: 600;
      color: var(--text-main);
      transition: background 0.2s;
    }

    .faq-question:hover {
      background: rgba(234, 241, 248, 0.4);
    }

    .faq-question i {
      color: var(--primary);
      font-size: 15px;
      flex-shrink: 0;
      transition: transform 0.3s ease;
    }

    .faq-item.active .faq-question i {
      transform: rotate(45deg);
    }

    .faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 24px;
      border-top: 0 solid var(--border);
      transition: max-height 0.35s ease, padding 0.3s ease;
    }

    .faq-item.active .faq-answer {
      max-height: 500px;
      padding: 16px 24px 20px;
      border-top-width: 1px;
    }

    .faq-answer p {
      margin: 0;
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    .cta-section {
      position: relative;
      background: var(--primary-weak);
      padding: 80px 0;
      overflow: hidden;
    }

    .cta-section::before {
      content: '';
      position: absolute;
      inset: 0;
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      opacity: 0.1;
    }

    .cta-inner {
      position: relative;
      z-index: 1;
      max-width: 680px;
      margin: 0 auto;
      text-align: center;
    }

    .cta-inner h2 {
      margin: 0 0 14px;
      font-size: 34px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-main);
    }

    .cta-inner p {
      margin: 0 0 30px;
      font-size: 16px;
      color: var(--text-secondary);
    }

    .site-footer {
      background: var(--primary-deep);
      color: #C7D3E0;
      padding: 64px 0 0;
      font-size: 14px;
    }

    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 44px;
    }

    .footer-brand .logo {
      color: #fff;
      margin-bottom: 14px;
      font-size: 17px;
    }

    .footer-brand .logo:hover {
      color: #fff;
    }

    .footer-brand .logo-badge {
      background: var(--accent);
    }

    .footer-brand p {
      margin: 0;
      max-width: 320px;
      font-size: 14px;
      line-height: 1.8;
      color: #A9BBD0;
    }

    .footer-col h4 {
      margin: 0 0 18px;
      font-size: 16px;
      font-weight: 600;
      color: #fff;
    }

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

    .footer-col a {
      color: #A9BBD0;
      transition: color 0.2s;
    }

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

    .footer-contact li {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 14px;
      color: #A9BBD0;
    }

    .footer-contact i {
      width: 16px;
      color: var(--accent);
      font-size: 14px;
      text-align: center;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      padding: 20px 0;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
      font-size: 13px;
      color: #8FA5BC;
      background: #0F2436;
      margin: 0;
      width: 100%;
    }

    .footer-bottom span {
      line-height: 1.6;
    }

    @media (max-width: 1024px) {
      .main-nav {
        gap: 20px;
      }
      .footer-top {
        grid-template-columns: 1fr 1fr;
      }
      .steps-inline {
        grid-template-columns: 1fr 1fr;
      }
    }

    @media (max-width: 768px) {
      section {
        padding: 64px 0;
      }
      .header-inner {
        height: 64px;
      }
      .nav-toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
      }
      .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--surface);
        border-bottom: 1px solid var(--border);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 12px 24px;
        box-shadow: 0 12px 24px rgba(21, 62, 116, 0.1);
        margin: 0;
        z-index: 99;
      }
      .main-nav.open {
        display: flex;
      }
      .main-nav .nav-link {
        display: block;
        padding: 14px 0;
        width: 100%;
        border-bottom: 1px solid var(--border);
      }
      .main-nav .nav-link:last-child {
        border-bottom: none;
      }
      .main-nav .nav-link::after {
        display: none;
      }
      .btn-header {
        margin-left: auto;
      }
      .page-banner {
        padding: 60px 0;
      }
      .page-banner h1 {
        font-size: 32px;
      }
      .section-header h2 {
        font-size: 26px;
      }
      .intro-content h2 {
        font-size: 26px;
      }
      .detail-text h3 {
        font-size: 22px;
      }
      .cta-inner h2 {
        font-size: 28px;
      }
    }

    @media (max-width: 520px) {
      section {
        padding: 48px 0;
      }
      .container {
        padding: 0 18px;
      }
      .logo {
        font-size: 15px;
      }
      .logo-badge {
        width: 30px;
        height: 30px;
        border-radius: 8px;
        font-size: 13px;
      }
      .btn-header {
        height: 36px;
        padding: 0 14px;
        font-size: 12px;
      }
      .nav-toggle {
        font-size: 18px;
        padding: 4px 6px;
      }
      .page-banner h1 {
        font-size: 27px;
      }
      .page-banner p {
        font-size: 15px;
      }
      .banner-tag {
        font-size: 12px;
        padding: 6px 14px;
      }
      .steps-inline {
        grid-template-columns: 1fr;
      }
      .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
      }
      .footer-bottom {
        gap: 6px;
      }
      .topic-card-body {
        padding: 22px;
      }
      .topic-card-lg img {
        height: 170px;
      }
      .post-card img {
        height: 140px;
      }
      .detail-block {
        padding: 12px 0;
      }
      .detail-text {
        padding: 12px 0;
      }
      .cta-inner h2 {
        font-size: 24px;
      }
      .section-header {
        margin-bottom: 36px;
      }
    }

    .btn:focus-visible,
    .nav-link:focus-visible,
    .text-link:focus-visible,
    .faq-question:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
    }

/* roulang page: category2 */
/* ===== 设计变量 ===== */
    :root {
      --bg: #F4F8FC;
      --surface: #FFFFFF;
      --primary: #1E56A0;
      --primary-deep: #153E74;
      --primary-weak: #EAF1F8;
      --accent: #F57C2F;
      --accent-hover: #D9661B;
      --text-main: #1F2D3D;
      --text-secondary: #5E6E80;
      --border: #E3E9F0;
      --success: #1E9E8E;
      --radius: 12px;
      --radius-btn: 8px;
      --radius-tag: 4px;
      --shadow-sm: 0 4px 16px rgba(21, 62, 116, 0.08);
      --shadow-lg: 0 10px 28px rgba(21, 62, 116, 0.14);
      --transition: 0.2s ease;
      --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
    }

    /* ===== Reset / Base ===== */
    *, *::before, *::after { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-family);
      background: var(--bg);
      color: var(--text-main);
      line-height: 1.7;
      font-size: 15px;
      margin: 0;
      -webkit-font-smoothing: antialiased;
    }
    h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 700; color: var(--text-main); }
    p { margin: 0; }
    a { color: inherit; text-decoration: none; }
    a:focus-visible, button:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
    ul, ol { list-style: none; margin: 0; padding: 0; }
    img { max-width: 100%; height: auto; display: block; }
    button { font-family: inherit; }
    .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

    /* ===== 按钮 ===== */
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      height: 44px;
      padding: 0 28px;
      border-radius: var(--radius-btn);
      font-size: 15px;
      font-weight: 600;
      border: 1px solid transparent;
      cursor: pointer;
      transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition);
    }
    .btn-lg { height: 52px; padding: 0 34px; font-size: 16px; }
    .btn-primary {
      background: var(--accent);
      color: #fff;
      border-color: var(--accent);
    }
    .btn-primary:hover {
      background: var(--accent-hover);
      border-color: var(--accent-hover);
      color: #fff;
      box-shadow: 0 8px 20px rgba(245, 124, 47, 0.28);
      transform: translateY(-2px);
    }
    .btn-secondary {
      background: transparent;
      color: var(--primary);
      border-color: var(--primary);
    }
    .btn-secondary:hover {
      background: var(--primary-weak);
      color: var(--primary-deep);
      border-color: var(--primary-deep);
    }
    .btn-link {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      font-weight: 600;
      color: var(--primary);
      transition: color var(--transition);
    }
    .btn-link i { transition: transform var(--transition); }
    .btn-link:hover { color: var(--primary-deep); }
    .btn-link:hover i { transform: translateX(4px); }

    /* ===== Header 导航 ===== */
    .site-header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: var(--surface);
      border-bottom: 1px solid var(--border);
      height: 72px;
      box-shadow: 0 2px 12px rgba(21, 62, 116, 0.04);
    }
    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      height: 72px;
    }
    .logo {
      display: inline-flex;
      align-items: center;
      gap: 10px;
      font-size: 17px;
      font-weight: 700;
      color: var(--primary-deep);
      white-space: nowrap;
    }
    .logo-badge {
      width: 34px;
      height: 34px;
      border-radius: 8px;
      background: var(--primary);
      color: #fff;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 14px;
      flex: 0 0 34px;
    }
    .main-nav { display: flex; align-items: center; gap: 4px; }
    .nav-link {
      display: inline-block;
      padding: 10px 14px;
      font-size: 14px;
      font-weight: 500;
      color: var(--text-secondary);
      border-radius: 6px;
      transition: background var(--transition), color var(--transition);
    }
    .nav-link:hover { color: var(--primary); background: var(--primary-weak); }
    .nav-link.active { color: var(--primary); font-weight: 600; background: var(--primary-weak); }
    .header-cta { height: 40px; padding: 0 22px; font-size: 14px; white-space: nowrap; }
    .mobile-toggle {
      display: none;
      width: 40px;
      height: 40px;
      border: 1px solid var(--border);
      border-radius: 8px;
      background: #fff;
      color: var(--primary);
      font-size: 16px;
      cursor: pointer;
      align-items: center;
      justify-content: center;
      flex: 0 0 40px;
    }
    .mobile-toggle:hover { background: var(--primary-weak); }

    /* ===== 页头横幅 ===== */
    .page-banner {
      position: relative;
      background-color: var(--primary-weak);
      background-image: url('/assets/images/backpic/back-2.webp');
      background-size: cover;
      background-position: center;
      padding: 78px 0 70px;
      overflow: hidden;
    }
    .page-banner::before {
      content: "";
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(244, 248, 252, 0.95) 35%, rgba(244, 248, 252, 0.82));
    }
    .page-banner-inner { position: relative; z-index: 1; }
    .breadcrumb {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 13px;
      color: var(--text-secondary);
      margin-bottom: 16px;
    }
    .breadcrumb a { color: var(--text-secondary); }
    .breadcrumb a:hover { color: var(--primary); }
    .breadcrumb i { font-size: 10px; color: #9AAEBC; }
    .page-banner h1 {
      font-size: 42px;
      line-height: 1.25;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 14px;
    }
    .banner-sub {
      font-size: 17px;
      color: var(--text-secondary);
      max-width: 640px;
      line-height: 1.8;
    }

    /* ===== 区块通用 ===== */
    .section { padding: 96px 0; }
    .section-alt { background: var(--surface); }
    .section-head {
      max-width: 720px;
      margin: 0 auto 52px;
      text-align: center;
    }
    .section-tag {
      display: inline-block;
      padding: 5px 14px;
      border-radius: var(--radius-tag);
      background: var(--primary-weak);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 14px;
    }
    .section-head h2 {
      font-size: 32px;
      font-weight: 700;
      line-height: 1.3;
      color: var(--text-main);
      margin-bottom: 12px;
    }
    .section-head p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.8;
    }
    .grid-y-gap > .cell { margin-bottom: 24px; }

    /* ===== 卡片通用 ===== */
    .card-surface {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    }
    .card-surface:hover {
      box-shadow: var(--shadow-lg);
      transform: translateY(-3px);
      border-color: #D0DCE8;
    }

    /* ===== 核心能力区 ===== */
    .feature-card-main {
      padding: 24px;
      height: 100%;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }
    .feature-media { border-radius: 10px; overflow: hidden; }
    .feature-media img { width: 100%; height: 210px; object-fit: cover; }
    .feature-body { flex: 1; display: flex; flex-direction: column; align-items: flex-start; }
    .feature-number {
      font-size: 32px;
      font-weight: 700;
      color: var(--primary-weak);
      line-height: 1;
      margin-bottom: 10px;
    }
    .feature-body h3 { font-size: 22px; font-weight: 700; margin-bottom: 10px; }
    .feature-body p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
      margin-bottom: 18px;
    }
    .feature-sub-list {
      display: flex;
      flex-direction: column;
      gap: 20px;
      height: 100%;
    }
    .feature-sub {
      flex: 1;
      display: flex;
      align-items: flex-start;
      gap: 18px;
      padding: 24px;
    }
    .feature-sub-icon {
      width: 48px;
      height: 48px;
      flex: 0 0 48px;
      border-radius: 10px;
      background: var(--primary-weak);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
    }
    .feature-sub h3 { font-size: 18px; font-weight: 600; margin-bottom: 6px; }
    .feature-sub p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

    /* ===== 功能模块卡片 ===== */
    .icon-card {
      padding: 28px 22px;
      height: 100%;
      position: relative;
      border-top: 3px solid var(--primary-weak);
    }
    .icon-card:hover { border-top-color: var(--primary); }
    .icon-card-icon {
      width: 44px;
      height: 44px;
      border-radius: 10px;
      background: var(--primary-weak);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 16px;
      margin-bottom: 18px;
    }
    .icon-card h3 { font-size: 17px; font-weight: 600; margin-bottom: 8px; }
    .icon-card p {
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.75;
      margin: 0;
    }

    /* ===== 图文详情区 ===== */
    .scenario-block { margin-top: 56px; }
    .scenario-block:first-child { margin-top: 0; }
    .scenario-img {
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      width: 100%;
      height: 320px;
      object-fit: cover;
    }
    .scenario-content { padding: 24px 12px; }
    .scenario-tag {
      display: inline-block;
      padding: 5px 14px;
      border-radius: var(--radius-tag);
      background: var(--primary-weak);
      color: var(--primary);
      font-size: 13px;
      font-weight: 600;
      margin-bottom: 16px;
    }
    .scenario-content h3 { font-size: 26px; font-weight: 700; margin-bottom: 14px; }
    .scenario-content p {
      font-size: 15px;
      color: var(--text-secondary);
      line-height: 1.85;
      margin-bottom: 20px;
    }

    /* ===== 服务资讯卡片 ===== */
    .info-card {
      height: 100%;
      display: flex;
      flex-direction: column;
      overflow: hidden;
    }
    .info-media { overflow: hidden; height: 180px; }
    .info-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s ease; }
    .info-card:hover .info-media img { transform: scale(1.04); }
    .info-body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
    .info-tag {
      align-self: flex-start;
      font-size: 12px;
      font-weight: 600;
      color: var(--primary);
      background: var(--primary-weak);
      padding: 4px 10px;
      border-radius: var(--radius-tag);
      margin-bottom: 12px;
    }
    .info-body h3 { font-size: 18px; font-weight: 600; line-height: 1.45; margin-bottom: 8px; }
    .info-body p { font-size: 13px; color: var(--text-secondary); line-height: 1.75; flex: 1; }
    .info-meta {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-top: 16px;
      padding-top: 14px;
      border-top: 1px solid var(--border);
      font-size: 13px;
      color: var(--text-secondary);
    }

    /* ===== FAQ ===== */
    .faq-item {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow-sm);
      margin-bottom: 16px;
      overflow: hidden;
      transition: box-shadow var(--transition);
    }
    .faq-item:hover { box-shadow: var(--shadow-lg); }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding: 18px 22px;
      background: none;
      border: none;
      font-size: 15px;
      font-weight: 600;
      color: var(--text-main);
      cursor: pointer;
      text-align: left;
      transition: background var(--transition);
    }
    .faq-question:hover { background: rgba(234, 241, 248, 0.4); }
    .faq-question i {
      width: 24px;
      height: 24px;
      flex: 0 0 24px;
      border-radius: 50%;
      background: var(--primary-weak);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-size: 12px;
      transition: transform var(--transition);
    }
    .faq-item.active .faq-question i { transform: rotate(45deg); }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease, padding 0.3s ease;
      padding: 0 22px;
    }
    .faq-answer p {
      margin: 0;
      padding: 16px 0 20px;
      border-top: 1px solid var(--border);
      font-size: 14px;
      color: var(--text-secondary);
      line-height: 1.8;
    }

    /* ===== CTA 区 ===== */
    .cta-section {
      position: relative;
      background-color: var(--primary-weak);
      background-image: url('/assets/images/backpic/back-1.webp');
      background-size: cover;
      background-position: center;
      padding: 88px 0;
    }
    .cta-section::before {
      content: "";
      position: absolute;
      inset: 0;
      background: rgba(234, 241, 248, 0.92);
    }
    .cta-box { position: relative; z-index: 1; text-align: center; max-width: 680px; margin: 0 auto; }
    .cta-box h2 { font-size: 32px; font-weight: 700; color: var(--text-main); margin-bottom: 14px; }
    .cta-box p { font-size: 16px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 28px; }
    .cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }

    /* ===== Footer 页脚 ===== */
    .site-footer {
      background: var(--primary-deep);
      color: #C7D4E4;
      padding: 64px 0 0;
      font-size: 14px;
    }
    .footer-top {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1.2fr;
      gap: 40px;
      padding-bottom: 48px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    .site-footer .logo { color: #fff; font-size: 17px; margin-bottom: 14px; }
    .site-footer .logo .logo-badge { background: rgba(255, 255, 255, 0.14); color: #fff; }
    .footer-brand p { font-size: 13px; line-height: 1.8; color: #9FB2C6; max-width: 320px; }
    .footer-col h4 {
      font-size: 15px;
      font-weight: 600;
      color: #fff;
      margin-bottom: 18px;
    }
    .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
    .footer-col a { color: #9FB2C6; font-size: 14px; transition: color var(--transition); }
    .footer-col a:hover { color: var(--accent); }
    .footer-contact li { display: flex; align-items: center; gap: 10px; color: #9FB2C6; font-size: 14px; }
    .footer-contact i { color: rgba(255, 255, 255, 0.5); width: 16px; text-align: center; }
    .footer-bottom {
      padding: 24px 0;
      background: #0F2436;
      text-align: center;
      font-size: 13px;
      color: #8AA0BC;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 12px;
      flex-wrap: wrap;
      margin-top: 0;
      width: 100%;
    }

    /* ===== 响应式 ===== */
    @media (max-width: 1023px) {
      .main-nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        align-items: stretch;
        padding: 16px 24px;
        box-shadow: 0 12px 30px rgba(21, 62, 116, 0.12);
        border-bottom: 1px solid var(--border);
        transform: translateY(-12px);
        opacity: 0;
        visibility: hidden;
        transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
      }
      .main-nav.mobile-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
      }
      .nav-link { padding: 14px 16px; border-radius: 8px; }
      .mobile-toggle { display: inline-flex; }
      .section { padding: 64px 0; }
      .section-head h2 { font-size: 28px; }
      .page-banner { padding: 60px 0; }
      .page-banner h1 { font-size: 34px; }
      .cta-section { padding: 64px 0; }
      .cta-box h2 { font-size: 26px; }
      .footer-top { grid-template-columns: 1fr 1fr; gap: 32px; }
      .scenario-img { height: 260px; }
    }

    @media (max-width: 639px) {
      .container { padding: 0 16px; }
      .section { padding: 48px 0; }
      .section-head { margin-bottom: 36px; }
      .section-head h2 { font-size: 24px; }
      .page-banner { padding: 48px 0 44px; }
      .page-banner h1 { font-size: 28px; }
      .banner-sub { font-size: 15px; }
      .header-cta { padding: 0 16px; font-size: 13px; }
      .feature-card-main { padding: 18px; }
      .feature-media img { height: 170px; }
      .feature-sub { padding: 18px; gap: 14px; }
      .feature-sub-icon { width: 42px; height: 42px; flex-basis: 42px; font-size: 16px; }
      .icon-card { padding: 22px 18px; }
      .scenario-block { margin-top: 40px; }
      .scenario-img { height: 220px; }
      .scenario-content { padding: 20px 0 0; }
      .scenario-content h3 { font-size: 21px; }
      .cta-actions .btn { width: 100%; }
      .cta-box h2 { font-size: 24px; }
      .footer-top { grid-template-columns: 1fr; }
      .faq-question { font-size: 14px; padding: 16px 18px; gap: 10px; padding-left: 16px; padding-right: 16px; }
      .faq-answer { padding: 0 16px; }
      .faq-answer p { padding: 14px 0 18px; }
    }

    @media (max-width: 420px) {
      .logo { font-size: 14px; }
      .header-cta span { display: none; }
      .header-cta { width: 40px; padding: 0; font-size: 14px; }
      .header-cta i { margin: 0; }
    }