/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --primary-light: #DBEAFE;
  --primary-soft: #EFF6FF;
  --accent: #D97706;
  --bg-light: #F0F5FF;
  --bg-card: #F8FAFC;
  --text-main: #1E293B;
  --text-sub: #475569;
  --text-light: #64748B;
  --border: #E2E8F0;
  --border-soft: #E5EAF0;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(30,41,59,0.06), 0 4px 12px rgba(30,41,59,0.04);
  --shadow-md: 0 8px 24px rgba(30,41,59,0.08);
  --shadow-lg: 0 12px 32px rgba(30,41,59,0.10);
  --space-section: 80px;
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --transition: all 0.25s ease;
}

/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  background: #fff;
  color: var(--text-main);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: color 0.2s ease; }
img { max-width: 100%; display: block; height: auto; }
button { font-family: inherit; border: none; background: none; cursor: pointer; color: inherit; }
input, select, textarea { font-family: inherit; font-size: 15px; color: var(--text-main); }
ul, ol { list-style: none; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }

/* ===== 容器 ===== */
.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 28px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  white-space: nowrap;
  border: 2px solid transparent;
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-1px); box-shadow: 0 6px 16px rgba(37, 99, 235, 0.25); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-outline {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover { background: var(--primary-soft); transform: translateY(-1px); }
.btn-outline:active { transform: translateY(0); }
.btn-sm { padding: 8px 20px; font-size: 14px; border-radius: 6px; }

/* ===== 徽章/标签 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  background: rgba(37, 99, 235, 0.10);
  color: var(--primary);
  line-height: 1.5;
}
.badge-accent { background: rgba(217, 119, 6, 0.12); color: var(--accent); }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 8px rgba(30, 41, 59, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  gap: 24px;
}
.logo {
  font-size: 24px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.logo i { font-size: 22px; }
.logo span { color: var(--text-main); font-weight: 700; font-size: 18px; }

.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-link {
  position: relative;
  padding: 10px 18px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: 6px;
  transition: var(--transition);
}
.nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.nav-link.active {
  color: var(--primary);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.header-right { display: flex; align-items: center; gap: 12px; }

/* Mega Menu */
.mega-wrap { position: relative; }
.mega-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-sub);
  border-radius: 6px;
  transition: var(--transition);
  background: var(--bg-card);
}
.mega-btn:hover { color: var(--primary); background: var(--primary-soft); }
.mega-btn i { font-size: 12px; transition: transform 0.2s ease; }
.mega-wrap:hover .mega-btn i, .mega-wrap:focus-within .mega-btn i { transform: rotate(180deg); }
.mega-panel {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: 520px;
  max-width: calc(100vw - 48px);
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
  padding: 24px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
  z-index: 50;
}
.mega-wrap:hover .mega-panel, .mega-wrap:focus-within .mega-panel {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.mega-col h4 {
  font-size: 13px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 14px;
  font-weight: 600;
}
.mega-col a { display: block; padding: 8px 0; font-size: 14px; color: var(--text-sub); border-radius: 4px; transition: var(--transition); }
.mega-col a:hover { color: var(--primary); padding-left: 4px; }
.mega-card {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  margin-bottom: 8px;
  border: 1px solid var(--border);
  transition: var(--transition);
}
.mega-card:hover { border-color: var(--primary); background: var(--primary-soft); }
.mega-card strong { display: block; font-size: 14px; color: var(--text-main); }
.mega-card span { font-size: 12px; color: var(--text-light); display: block; margin-top: 2px; }

.nav-toggle { display: none; font-size: 22px; color: var(--text-main); padding: 8px; border-radius: 6px; }
.nav-toggle:hover { background: var(--bg-card); }

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 70%);
  position: relative;
  padding: 90px 0 80px;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background-image:
    linear-gradient(rgba(37, 99, 235, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
  background-size: 28px 28px;
  pointer-events: none;
}
.hero-inner { display: flex; align-items: center; gap: 60px; position: relative; z-index: 2; }
.hero-text { flex: 1.1; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(37, 99, 235, 0.08);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero-title {
  font-size: 42px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: 1px;
}
.hero-title .highlight { color: var(--primary); }
.hero-subtitle {
  font-size: 18px;
  color: var(--text-sub);
  margin-bottom: 28px;
  max-width: 460px;
  line-height: 1.7;
}
.hero-buttons { display: flex; gap: 14px; margin-bottom: 36px; }
.hero-trust {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
}
.trust-item i { color: var(--success); font-size: 16px; }
.hero-image { flex: 0.9; position: relative; }
.hero-img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  width: 100%;
  height: auto;
  object-fit: cover;
  position: relative;
  z-index: 2;
}
.hero-float-card {
  position: absolute;
  bottom: -18px;
  left: -24px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 3;
  border: 1px solid var(--border);
  animation: floatIn 0.6s ease;
}
@keyframes floatIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-float-card i {
  color: var(--success);
  font-size: 24px;
  background: rgba(16, 185, 129, 0.1);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
}
.hero-float-card strong { font-size: 14px; color: var(--text-main); display: block; }
.hero-float-card span { font-size: 12px; color: var(--text-light); }

/* ===== 快速入口 ===== */
.quick-entry { padding: 48px 0 0; position: relative; z-index: 4; }
.quick-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
  padding: 20px;
}
.quick-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  transition: var(--transition);
}
.quick-card:hover { background: var(--primary-soft); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.quick-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.quick-card:nth-child(2) .quick-icon { background: var(--accent); }
.quick-card:nth-child(3) .quick-icon { background: #0EA5E9; }
.quick-card:nth-child(4) .quick-icon { background: #8B5CF6; }
.quick-text strong { font-size: 15px; display: block; color: var(--text-main); }
.quick-text span { font-size: 13px; color: var(--text-light); }

/* ===== 步骤 ===== */
.steps { padding: var(--space-section) 0; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}
.section-header p { font-size: 16px; color: var(--text-light); max-width: 640px; margin: 0 auto; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  position: relative;
}
.steps-grid::before {
  content: "";
  position: absolute;
  top: 36px;
  left: 15%;
  right: 15%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-light), var(--border), var(--primary-light));
  z-index: 0;
}
.step-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px 28px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-soft);
  position: relative;
  z-index: 1;
  transition: var(--transition);
  text-align: left;
}
.step-card:hover { box-shadow: var(--shadow-md); border-color: var(--primary-light); }
.step-num {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  opacity: 0.15;
  display: block;
  margin-bottom: 12px;
  letter-spacing: 1px;
}
.step-card h3 { font-size: 19px; margin-bottom: 10px; color: var(--text-main); }
.step-card p { font-size: 14px; color: var(--text-light); line-height: 1.7; }
.step-link { display: inline-block; margin-top: 16px; font-size: 14px; color: var(--primary); font-weight: 500; }
.step-link:hover { text-decoration: underline; }

/* ===== 资讯区 ===== */
.news { padding: var(--space-section) 0; background: var(--bg-light); }
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  align-items: stretch;
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-soft);
  transition: var(--transition);
}
.news-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.news-thumb {
  width: 180px;
  flex-shrink: 0;
  overflow: hidden;
}
.news-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.news-card:hover .news-thumb img { transform: scale(1.03); }
.news-info { padding: 20px 22px; display: flex; flex-direction: column; }
.news-info .badge { align-self: flex-start; margin-bottom: 10px; }
.news-info h3 {
  font-size: 16px;
  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 0.2s;
}
.news-card:hover .news-info h3 { color: var(--primary); }
.news-info 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;
  margin-bottom: 12px;
  flex: 1;
}
.news-date {
  font-size: 13px;
  color: var(--text-light);
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-date i { font-size: 13px; }
.empty-state {
  grid-column: 1 / -1;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 48px;
  text-align: center;
  border: 1px dashed var(--border);
  color: var(--text-light);
}
.empty-state i { font-size: 36px; margin-bottom: 12px; color: var(--border); display: block; }

/* ===== 案例区 ===== */
.cases { padding: var(--space-section) 0; }
.cases-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  grid-template-rows: auto;
  gap: 24px;
}
.case-large {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-soft);
  background: #fff;
  transition: var(--transition);
  grid-row: span 2;
  display: flex;
  flex-direction: column;
}
.case-large:hover { box-shadow: var(--shadow-md); }
.case-large .case-img-wrap { flex: 1; overflow: hidden; }
.case-large .case-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.case-small { border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid var(--border-soft); background: #fff; transition: var(--transition); display: flex; }
.case-small:hover { box-shadow: var(--shadow-md); }
.case-small .case-img-wrap { width: 140px; flex-shrink: 0; overflow: hidden; }
.case-small .case-img-wrap img { width: 100%; height: 100%; object-fit: cover; }
.case-body { padding: 24px; flex: 1; }
.case-small .case-body { padding: 18px 20px; display: flex; flex-direction: column; justify-content: center; }
.case-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  color: var(--primary);
  background: rgba(37, 99, 235, 0.10);
  padding: 3px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
}
.case-body h3 { font-size: 18px; margin-bottom: 8px; color: var(--text-main); }
.case-body p { font-size: 14px; color: var(--text-light); line-height: 1.6; margin-bottom: 12px; }
.case-result {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 26px;
  font-weight: 800;
  color: var(--accent);
}
.case-result span { font-size: 14px; color: var(--text-light); font-weight: 400; }
.case-small .case-result { font-size: 20px; }

/* ===== FAQ ===== */
.faq { padding: var(--space-section) 0; background: var(--bg-light); }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item.active { border-color: var(--primary); box-shadow: var(--shadow-sm); }
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
  transition: var(--transition);
}
.faq-question:hover { color: var(--primary); }
.faq-question .icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-card);
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform 0.3s ease, background 0.3s ease, color 0.3s ease;
  flex-shrink: 0;
}
.faq-item.active .faq-question .icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #fff;
}
.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
  border-top: 0 solid var(--border);
}
.faq-item.active .faq-answer {
  padding: 16px 24px 20px;
  max-height: 400px;
  border-top: 1px solid var(--border);
}

/* ===== CTA ===== */
.cta {
  padding: var(--space-section) 0;
  background: linear-gradient(135deg, var(--bg-light) 0%, #ffffff 100%);
}
.cta-inner {
  background: linear-gradient(135deg, var(--primary-soft), #ffffff);
  border: 1px solid rgba(37, 99, 235, 0.1);
  border-radius: 24px;
  padding: 56px 60px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  box-shadow: var(--shadow-sm);
}
.cta-text h2 { font-size: 30px; margin-bottom: 12px; color: var(--text-main); }
.cta-text p { color: var(--text-sub); font-size: 16px; margin-bottom: 20px; max-width: 420px; }
.cta-points { display: flex; flex-direction: column; gap: 12px; }
.cta-points li { display: flex; align-items: center; gap: 10px; font-size: 14px; color: var(--text-sub); }
.cta-points li i { color: var(--success); }
.cta-form-wrap { background: #fff; border-radius: var(--radius-lg); padding: 32px 32px; box-shadow: var(--shadow-sm); border: 1px solid var(--border); }
.cta-form-wrap h3 { font-size: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 500; color: var(--text-sub); margin-bottom: 6px; }
.form-control {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  transition: var(--transition);
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background: #fff;
}
.form-control::placeholder { color: var(--text-light); }
select.form-control { appearance: none; -webkit-appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2364748B' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L2 5h12z'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 14px center; }
.form-message {
  display: none;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  margin-top: 12px;
  align-items: center;
  gap: 8px;
}
.form-message.success { background: #ECFDF5; color: #065F46; border: 1px solid #A7F3D0; }
.form-message.error { background: #FEF2F2; color: #991B1B; border: 1px solid #FECACA; }
.form-message.show { display: flex; }
.cta-actions { display: flex; gap: 12px; margin-top: 8px; }
.cta-actions .btn { flex: 1; }

/* ===== Footer ===== */
.site-footer { background: #F1F5F9; border-top: 1px solid var(--border); }
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
  gap: 40px;
  padding: 56px 0 40px;
}
.footer-brand .logo { font-size: 22px; margin-bottom: 14px; }
.footer-brand p { font-size: 14px; color: var(--text-light); line-height: 1.7; max-width: 280px; }
.footer-title { font-size: 15px; font-weight: 600; color: var(--text-main); margin-bottom: 18px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: var(--text-light); transition: var(--transition); }
.footer-links a:hover { color: var(--primary); padding-left: 4px; }
.footer-contact li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
}
.footer-contact li i { color: var(--primary); margin-top: 4px; width: 16px; }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
  color: var(--text-light);
}
.footer-bottom a { color: var(--text-light); }
.footer-bottom a:hover { color: var(--primary); }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .hero-inner { flex-direction: column; gap: 48px; }
  .hero-text { text-align: center; }
  .hero-subtitle { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .hero-trust { justify-content: center; }
  .hero-image { max-width: 560px; }
  .quick-grid { grid-template-columns: repeat(2, 1fr); }
  .steps-grid::before { display: none; }
  .cases-grid { grid-template-columns: 1fr; }
  .cta-inner { grid-template-columns: 1fr; padding: 40px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .container { padding: 0 16px; }
  :root { --space-section: 56px; }
  .section-header h2 { font-size: 24px; }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    box-shadow: 0 16px 32px rgba(0,0,0,0.1);
    border-bottom: 1px solid var(--border);
  }
  .main-nav.open { display: flex; }
  .nav-link { padding: 14px 16px; border-radius: var(--radius-sm); }
  .nav-link.active::after { display: none; }
  .nav-link.active { background: var(--primary-soft); }
  .mega-panel { display: none; position: static; width: 100%; box-shadow: none; border: 1px solid var(--border); opacity: 1; visibility: visible; transform: none; margin-top: 8px; grid-template-columns: 1fr; gap: 16px; }
  .mega-wrap:hover .mega-panel { display: grid; }
  .nav-toggle { display: block; }
  .header-right .mega-wrap, .header-right .btn { display: none; }
  .hero { padding: 60px 0; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 16px; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .hero-buttons .btn { width: 100%; }
  .hero-float-card { left: 12px; bottom: -14px; }
  .quick-grid { grid-template-columns: 1fr; gap: 12px; }
  .steps-grid { grid-template-columns: 1fr; gap: 20px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; }
  .news-thumb { width: 100%; height: 140px; }
  .news-thumb img { height: 140px; }
  .cases-grid { grid-template-columns: 1fr; }
  .case-large .case-img-wrap { height: 200px; }
  .case-small { flex-direction: column; }
  .case-small .case-img-wrap { width: 100%; height: 140px; }
  .cta-inner { padding: 28px 20px; }
  .cta-actions { flex-direction: column; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-brand p { max-width: 100%; }
}

@media (max-width: 576px) {
  .hero-title { font-size: 26px; }
  .section-header h2 { font-size: 21px; }
  .section-header p { font-size: 14px; }
  .step-card { padding: 28px 20px; }
  .cta-form-wrap { padding: 24px 18px; }
  .logo span { font-size: 16px; }
  .logo { font-size: 20px; }
  .hero-float-card { display: none; }
}

/* ===== 可访问性 ===== */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.15);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* roulang page: article */
:root {
  --primary: #2563EB;
  --primary-hover: #1D4ED8;
  --primary-light: #EFF6FF;
  --primary-bg: #F0F5FF;
  --accent: #D97706;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --bg-white: #FFFFFF;
  --bg-gray: #F8FAFC;
  --border: #E2E8F0;
  --border-light: #E5EAF0;
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --radius-s: 8px;
  --radius-m: 12px;
  --radius-l: 16px;
  --shadow-sm: 0 1px 3px rgba(30,41,59,0.06), 0 4px 12px rgba(30,41,59,0.04);
  --shadow-md: 0 8px 24px rgba(30,41,59,0.08);
  --shadow-lg: 0 16px 40px rgba(30,41,59,0.10);
  --font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Inter", sans-serif;
  --container-width: 1200px;
  --section-gap: 80px;
  --mobile-gap: 48px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-family);font-size:16px;line-height:1.75;color:var(--text-main);background:var(--bg-white);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-hover)}
button{font-family:inherit;cursor:pointer;border:none;background:none}
input,select,textarea{font-family:inherit}
.container{max-width:var(--container-width);margin:0 auto;padding:0 24px}
.section-title{font-size:28px;font-weight:700;line-height:1.4;margin-bottom:12px;color:var(--text-main)}
.section-sub{font-size:16px;color:var(--text-muted);margin-bottom:32px;line-height:1.7}

.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--border-light);box-shadow:0 1px 4px rgba(30,41,59,0.03)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:70px;gap:24px}
.logo{display:inline-flex;align-items:center;gap:10px;font-size:22px;font-weight:700;color:var(--text-main);flex-shrink:0}
.logo i{color:var(--primary);font-size:22px;width:38px;height:38px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);border-radius:10px;transition:transform .2s}
.logo:hover i{transform:rotate(8deg) scale(1.05)}
.main-nav{display:flex;align-items:center;gap:4px;margin:0 auto}
.nav-link{position:relative;display:inline-flex;align-items:center;padding:10px 18px;font-size:15px;font-weight:500;color:var(--text-main);border-radius:var(--radius-s);transition:color .2s,background .2s}
.nav-link::after{content:"";position:absolute;left:18px;right:18px;bottom:2px;height:2px;background:var(--primary);border-radius:2px;opacity:0;transform:scaleX(0.5);transition:opacity .2s,transform .2s}
.nav-link:hover{color:var(--primary);background:var(--primary-light)}
.nav-link.active{color:var(--primary);font-weight:600}
.nav-link.active::after{opacity:1;transform:scaleX(1)}
.header-right{display:flex;align-items:center;gap:16px;flex-shrink:0}
.mega-wrap{position:relative}
.mega-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;font-size:15px;font-weight:500;color:var(--text-main);background:var(--bg-gray);border:1px solid var(--border-light);border-radius:999px;transition:all .2s}
.mega-btn i{font-size:12px;transition:transform .2s}
.mega-wrap:hover .mega-btn,.mega-wrap:focus-within .mega-btn{color:var(--primary);border-color:var(--primary);background:var(--primary-light)}
.mega-wrap:hover .mega-btn i,.mega-wrap:focus-within .mega-btn i{transform:rotate(180deg)}
.mega-panel{position:absolute;top:calc(100% + 12px);right:0;width:480px;background:var(--bg-white);border-radius:var(--radius-m);box-shadow:var(--shadow-lg);border:1px solid var(--border-light);padding:22px;display:grid;grid-template-columns:1fr 1.25fr;gap:20px;opacity:0;visibility:hidden;transform:translateY(8px);transition:all .25s ease;z-index:50}
.mega-wrap:hover .mega-panel,.mega-wrap:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;font-weight:600;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em;margin-bottom:12px}
.mega-col .mega-link{display:block;padding:7px 0;font-size:14px;color:var(--text-main)}
.mega-col .mega-link:hover{color:var(--primary)}
.mega-card{display:block;padding:12px 14px;background:var(--bg-gray);border-radius:var(--radius-s);margin-bottom:8px;transition:background .2s,box-shadow .2s}
.mega-card:hover{background:var(--primary-light);box-shadow:var(--shadow-sm)}
.mega-card strong{display:block;font-size:14px;color:var(--text-main)}
.mega-card span{display:block;font-size:13px;color:var(--text-muted);line-height:1.5;margin-top:2px}
.nav-toggle{display:none;width:42px;height:42px;border-radius:var(--radius-s);border:1px solid var(--border);background:var(--bg-white);color:var(--text-main);font-size:18px;align-items:center;justify-content:center}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 28px;font-size:15px;font-weight:600;border-radius:var(--radius-s);border:2px solid transparent;transition:all .25s ease;cursor:pointer;line-height:1.4}
.btn-sm{padding:8px 18px;font-size:14px}
.btn-lg{padding:14px 36px;font-size:16px}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 20px rgba(37,99,235,0.25)}
.btn-primary:active{transform:translateY(0)}
.btn-outline{background:transparent;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-light);color:var(--primary-hover)}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

.article-hero{background:var(--primary-bg);padding:56px 0 48px;border-bottom:1px solid var(--border-light);position:relative;overflow:hidden}
.article-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 15% 30%,rgba(37,99,235,0.06) 0,transparent 45%);pointer-events:none}
.article-hero .container{position:relative;z-index:1}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-muted);margin-bottom:28px}
.breadcrumb a{color:var(--text-muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--text-light);font-size:11px}
.breadcrumb .current{color:var(--text-main);font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:260px}
.article-badge{display:inline-flex;align-items:center;gap:6px;padding:5px 16px;background:var(--primary-light);color:var(--primary);font-size:13px;font-weight:600;border-radius:999px;margin-bottom:16px}
.article-hero h1{font-size:36px;font-weight:700;line-height:1.35;color:var(--text-main);max-width:900px;margin-bottom:24px}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:20px;font-size:13px;color:var(--text-muted)}
.article-meta span{display:inline-flex;align-items:center;gap:6px}
.article-meta i{font-size:14px;color:var(--text-light)}

.article-body{padding:64px 0 72px;background:var(--bg-white)}
.article-content{max-width:760px;margin:0 auto;color:var(--text-main)}
.article-content h2{font-size:24px;font-weight:700;line-height:1.5;margin:44px 0 16px;padding-bottom:10px;border-bottom:1px solid var(--border-light)}
.article-content h3{font-size:19px;font-weight:600;line-height:1.5;margin:30px 0 12px}
.article-content p{font-size:16px;line-height:1.85;color:#334155;margin-bottom:24px}
.article-content img{max-width:100%;height:auto;border-radius:var(--radius-m);margin:28px auto;box-shadow:var(--shadow-sm)}
.article-content blockquote{border-left:4px solid var(--primary);background:var(--primary-light);padding:18px 22px;border-radius:0 var(--radius-s) var(--radius-s) 0;margin:28px 0;font-size:15px;line-height:1.75;color:#334155}
.article-content blockquote p{margin-bottom:0}
.article-content ul,.article-content ol{margin:0 0 24px;padding-left:24px}
.article-content li{margin-bottom:8px;line-height:1.8;color:#334155}
.article-content a{color:var(--primary);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .2s}
.article-content a:hover{border-bottom-color:var(--primary)}
.article-content table{width:100%;border-collapse:collapse;margin:28px 0}
.article-content table th,.article-content table td{border:1px solid var(--border);padding:10px 14px;text-align:left;font-size:14px}
.article-content table th{background:var(--bg-gray);font-weight:600}
.article-content code{background:var(--bg-gray);border:1px solid var(--border);padding:2px 6px;border-radius:4px;font-size:14px}
.article-content figcaption{font-size:13px;color:var(--text-muted);text-align:center;margin-top:-16px;margin-bottom:24px}

.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:40px;padding-top:24px;border-top:1px solid var(--border-light)}
.article-tags .tag{display:inline-flex;align-items:center;padding:5px 14px;background:var(--bg-gray);border:1px solid var(--border-light);color:var(--text-muted);font-size:13px;border-radius:999px;transition:all .2s}
.article-tags .tag:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary)}

.related-section{padding:72px 0 80px;background:var(--bg-gray)}
.related-section .section-top{max-width:100%;margin-bottom:36px;display:flex;align-items:flex-end;justify-content:space-between;gap:16px}
.related-section .section-top h2{font-size:26px;font-weight:700}
.related-section .section-top p{color:var(--text-muted);font-size:14px}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.related-card{display:flex;align-items:center;gap:16px;background:var(--bg-white);border-radius:var(--radius-m);padding:16px;box-shadow:var(--shadow-sm);transition:all .3s;border:1px solid var(--border-light)}
.related-card:hover{box-shadow:var(--shadow-md);transform:translateY(-4px)}
.related-card img{width:104px;height:78px;object-fit:cover;border-radius:var(--radius-s);flex-shrink:0}
.related-card .rc-body{flex:1;min-width:0}
.related-card h3{font-size:15px;font-weight:600;line-height:1.5;margin-bottom:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.related-card:hover h3{color:var(--primary)}
.related-card .rc-date{font-size:12px;color:var(--text-muted)}
.related-footer{display:flex;justify-content:flex-end;margin-top:32px}
.back-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:500;color:var(--primary);padding:8px 16px;border-radius:var(--radius-s);transition:background .2s}
.back-link:hover{background:var(--primary-light)}

.article-cta{padding:72px 0;background:linear-gradient(135deg,#F0F5FF 0%,#EFF6FF 50%,#FFFFFF 100%);text-align:center}
.cta-box{max-width:680px;margin:0 auto;background:var(--bg-white);border-radius:var(--radius-l);padding:44px 40px;box-shadow:var(--shadow-md);border:1px solid var(--border-light)}
.cta-box h2{font-size:24px;font-weight:700;margin-bottom:12px}
.cta-box p{color:var(--text-muted);margin-bottom:28px;font-size:15px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}

.not-found{max-width:600px;margin:0 auto;text-align:center;padding:60px 32px;background:var(--bg-white);border-radius:var(--radius-l);box-shadow:var(--shadow-sm);border:1px solid var(--border-light)}
.not-found i{font-size:52px;color:var(--text-light);margin-bottom:20px}
.not-found h2{font-size:26px;color:var(--text-main);margin-bottom:14px}
.not-found p{color:var(--text-muted);margin-bottom:28px}

.site-footer{background:var(--bg-gray);border-top:1px solid var(--border-light);padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;color:var(--text-muted);line-height:1.7;max-width:320px}
.footer-title{font-size:16px;font-weight:600;margin-bottom:18px;color:var(--text-main)}
.footer-links{list-style:none;padding:0}
.footer-links li{margin-bottom:10px}
.footer-links a{color:var(--text-muted);font-size:14px;transition:color .2s}
.footer-links a:hover{color:var(--primary)}
.footer-contact{list-style:none;padding:0}
.footer-contact li{display:flex;align-items:flex-start;gap:10px;color:var(--text-muted);font-size:14px;margin-bottom:12px;line-height:1.6}
.footer-contact i{color:var(--primary);font-size:14px;margin-top:3px}
.footer-bottom{border-top:1px solid var(--border-light);padding:20px 0;text-align:center}
.footer-bottom p{font-size:13px;color:var(--text-muted)}

@media (max-width:1024px){
  .container{padding:0 20px}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .main-nav{position:fixed;top:70px;left:0;right:0;background:var(--bg-white);flex-direction:column;align-items:stretch;padding:16px 20px 20px;gap:4px;box-shadow:var(--shadow-md);border-bottom:1px solid var(--border-light);display:none;z-index:99;max-height:calc(100vh - 70px);overflow-y:auto}
  .main-nav.open{display:flex}
  .nav-link{display:block;padding:13px 16px;font-size:15px;border-radius:var(--radius-s)}
  .nav-link::after{display:none}
  .nav-link:hover{background:var(--primary-light)}
  .header-right{gap:8px}
  .related-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:768px){
  :root{--section-gap:48px}
  .container{padding:0 16px}
  .mega-wrap{display:none}
  .header-right .btn{display:none}
  .header-inner{height:62px}
  .main-nav{top:62px;padding:12px 16px 16px}
  .article-hero{padding:40px 0 36px}
  .article-hero h1{font-size:28px;line-height:1.4}
  .article-meta{gap:12px}
  .article-body{padding:48px 0}
  .article-content{padding:0}
  .article-content h2{font-size:21px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .related-section{padding:48px 0}
  .related-grid{grid-template-columns:1fr}
  .cta-box{padding:32px 24px}
  .cta-actions .btn{width:100%}
  .section-title{font-size:22px}
}
@media (max-width:576px){
  .footer-grid{grid-template-columns:1fr;gap:24px}
  .footer-type{grid-template-columns:1fr}
  .article-meta span{display:flex}
  .related-card img{width:90px;height:70px}
  .article-cta{padding:48px 0}
  .cta-box h2{font-size:21px}
}

/* roulang page: category1 */
:root {
            --primary: #2563EB;
            --primary-hover: #1D4ED8;
            --primary-light: #EFF6FF;
            --primary-border: #BFDBFE;
            --accent: #D97706;
            --accent-light: #FEF3C7;
            --page-bg: #F0F5FF;
            --body-bg: #FFFFFF;
            --soft-bg: #F8FAFC;
            --text-main: #1E293B;
            --text-body: #334155;
            --text-weak: #64748B;
            --border: #E2E8F0;
            --border-light: #E5EAF0;
            --success: #10B981;
            --warning: #F59E0B;
            --error: #EF4444;
            --radius: 12px;
            --radius-lg: 16px;
            --radius-sm: 8px;
            --radius-pill: 999px;
            --shadow: 0 1px 3px rgba(30, 41, 59, 0.06), 0 4px 12px rgba(30, 41, 59, 0.04);
            --shadow-hover: 0 8px 24px rgba(30, 41, 59, 0.08);
            --container-w: 1200px;
            --gutter: 24px;
            --section-pad: 80px;
            --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", sans-serif;
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-body);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
            height: auto;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color .2s ease;
        }
        a:hover {
            color: var(--primary-hover);
        }
        ul,
        ol {
            list-style: none;
        }
        button {
            font: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        input,
        select {
            font: inherit;
        }
        .container {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 var(--gutter);
        }
        .section {
            padding: var(--section-pad) 0;
        }
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.3;
            margin-bottom: 12px;
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 15px;
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 16px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            line-height: 1.4;
            transition: background .2s, transform .2s, box-shadow .2s, border-color .2s;
            border: 1px solid transparent;
        }
        .btn:focus-visible {
            outline: 2px solid rgba(37, 99, 235, .4);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: var(--shadow-hover);
        }
        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }
        .btn-outline {
            border-color: var(--primary);
            color: var(--primary);
            background: #fff;
        }
        .btn-outline:hover {
            background: var(--primary-light);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 36px;
            font-size: 17px;
        }
        .btn-sm {
            padding: 8px 20px;
            font-size: 14px;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: var(--radius-pill);
            font-size: 12px;
            font-weight: 600;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: #fff;
            box-shadow: 0 1px 4px rgba(30, 41, 59, 0.06);
            border-bottom: 1px solid var(--border-light);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
        }
        .logo i {
            width: 38px;
            height: 38px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            font-size: 18px;
        }
        .logo:hover {
            color: var(--text-main);
        }
        .main-nav {
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 24px 0;
            position: relative;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 100%;
            height: 2px;
            background: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .2s ease;
        }
        .nav-link:hover {
            color: var(--primary);
        }
        .nav-link:hover::after {
            transform: scaleX(1);
        }
        .nav-link.active {
            color: var(--primary);
        }
        .nav-link.active::after {
            transform: scaleX(1);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .mega-wrap {
            position: relative;
        }
        .mega-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            padding: 8px 4px;
            transition: color .2s;
        }
        .mega-btn:hover {
            color: var(--primary);
        }
        .mega-btn i {
            font-size: 12px;
            transition: transform .2s;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 10px);
            right: 0;
            width: 500px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow-hover);
            padding: 24px;
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 24px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(6px);
            transition: opacity .2s ease, transform .2s ease, visibility .2s;
        }
        .mega-wrap:hover .mega-panel,
        .mega-wrap:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mega-col h4 {
            font-size: 14px;
            color: var(--text-weak);
            font-weight: 600;
            margin-bottom: 12px;
        }
        .mega-col>a:not(.mega-card) {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: var(--text-body);
        }
        .mega-col>a:not(.mega-card):hover {
            color: var(--primary);
        }
        .mega-card {
            display: block;
            background: var(--soft-bg);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            margin-bottom: 10px;
            transition: background .2s, box-shadow .2s;
        }
        .mega-card:hover {
            background: var(--primary-light);
            box-shadow: var(--shadow);
        }
        .mega-card strong {
            display: block;
            font-size: 14px;
            color: var(--text-main);
            margin-bottom: 2px;
        }
        .mega-card span {
            font-size: 13px;
            color: var(--text-weak);
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: #fff;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: var(--text-main);
        }
        .nav-toggle.active i::before {
            content: "\f00d";
        }

        /* Breadcrumb */
        .page-breadcrumb {
            background: var(--page-bg);
            border-bottom: 1px solid var(--border);
            padding: 14px 0;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-weak);
        }
        .breadcrumb a {
            color: var(--primary);
        }
        .breadcrumb i {
            font-size: 11px;
            color: #94A3B8;
        }

        /* Hero */
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, var(--page-bg) 0%, #FFFFFF 100%);
            overflow: hidden;
            padding: 88px 0 88px;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: radial-gradient(rgba(37, 99, 235, 0.08) 1px, transparent 1px);
            background-size: 26px 26px;
            pointer-events: none;
        }
        .category-hero-inner {
            position: relative;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
        }
        .hero-text .section-label {
            margin-bottom: 20px;
        }
        .hero-text h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 16px;
        }
        .hero-text>p {
            font-size: 17px;
            line-height: 1.75;
            color: var(--text-body);
            max-width: 520px;
            margin-bottom: 28px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }
        .hero-trust {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
        }
        .hero-trust span {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
        }
        .hero-trust i {
            color: var(--primary);
        }
        .hero-media {
            position: relative;
        }
        .hero-media img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-hover);
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }

        /* Features */
        .features-section {
            background: #fff;
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--gutter);
        }
        .feature-card {
            background: var(--soft-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 28px;
            transition: transform .2s, box-shadow .2s;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .feature-icon {
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 14px;
            font-size: 22px;
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* Scenario */
        .scenario-section {
            background: var(--page-bg);
        }
        .scenario-wrap {
            display: grid;
            grid-template-columns: 1fr 1.15fr;
            gap: 56px;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow);
            padding: 40px;
        }
        .scenario-media img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-hover);
            object-fit: cover;
            aspect-ratio: 4 / 3;
        }
        .scenario-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .scenario-content>p {
            color: var(--text-body);
            margin-bottom: 20px;
            font-size: 15px;
        }
        .scenario-list {
            margin-bottom: 24px;
        }
        .scenario-list li {
            display: flex;
            gap: 10px;
            padding: 6px 0;
            font-size: 15px;
            color: var(--text-body);
        }
        .scenario-list i {
            color: var(--primary);
            margin-top: 5px;
            font-size: 15px;
        }
        .scenario-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        /* Service */
        .service-section {
            background: #fff;
        }
        .service-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--gutter);
        }
        .service-item {
            display: flex;
            gap: 20px;
            background: var(--soft-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 20px;
            transition: box-shadow .2s, transform .2s;
        }
        .service-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .service-thumb {
            flex-shrink: 0;
            width: 160px;
            height: 120px;
            border-radius: 10px;
            overflow: hidden;
            background: #fff;
        }
        .service-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }
        .service-item:hover .service-thumb img {
            transform: scale(1.04);
        }
        .service-info .badge {
            margin-bottom: 8px;
        }
        .service-info h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .service-info p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .service-link {
            font-size: 14px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .service-link i {
            transition: transform .2s;
        }
        .service-link:hover i {
            transform: translateX(4px);
        }

        /* Steps */
        .steps-section {
            background: var(--page-bg);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--gutter);
            position: relative;
        }
        .steps-grid::before {
            content: '';
            position: absolute;
            top: 28px;
            left: 8%;
            right: 8%;
            height: 2px;
            background: var(--border);
            z-index: 0;
        }
        .step-item {
            position: relative;
            z-index: 1;
            background: #fff;
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 32px 24px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: box-shadow .2s, transform .2s;
        }
        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-num {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            border: 2px solid var(--primary-border);
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            border-radius: 50%;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
        }

        /* FAQ */
        .faq-section {
            background: #fff;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            background: var(--soft-bg);
            border: 1px solid var(--border-light);
            border-radius: var(--radius);
            padding: 20px 24px;
            position: relative;
            overflow: hidden;
            transition: box-shadow .2s;
        }
        .faq-item::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 3px;
            background: var(--primary);
            transform: scaleY(0);
            transition: transform .2s;
        }
        .faq-item.open::before {
            transform: scaleY(1);
        }
        .faq-item.open {
            box-shadow: var(--shadow);
        }
        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            padding: 0;
            background: none;
        }
        .faq-q i {
            color: var(--primary);
            transition: transform .2s;
            flex-shrink: 0;
            margin-left: 12px;
            font-size: 14px;
        }
        .faq-item.open .faq-q i {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease, padding .3s ease;
            font-size: 14px;
            color: var(--text-body);
        }
        .faq-item.open .faq-a {
            max-height: 200px;
            padding-top: 14px;
            margin-top: 14px;
            border-top: 1px solid var(--border);
        }

        /* CTA */
        .cta-section {
            padding: 64px 0 80px;
            background: linear-gradient(135deg, var(--page-bg) 0%, #FFFFFF 100%);
        }
        .cta-box {
            max-width: 840px;
            margin: 0 auto;
            text-align: center;
            background: var(--primary-light);
            border: 1px solid var(--primary-border);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            position: relative;
            overflow: hidden;
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
        }
        .cta-box p {
            color: var(--text-body);
            margin-bottom: 28px;
            font-size: 16px;
        }
        .cta-actions {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* Footer */
        .site-footer {
            background: #F1F5F9;
            border-top: 1px solid var(--border);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .logo {
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-weak);
            max-width: 300px;
        }
        .footer-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 16px;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            font-size: 14px;
            color: var(--text-body);
        }
        .footer-links a:hover {
            color: var(--primary);
        }
        .footer-contact li {
            display: flex;
            gap: 10px;
            font-size: 14px;
            color: var(--text-body);
            margin-bottom: 10px;
        }
        .footer-contact i {
            color: var(--primary);
            margin-top: 4px;
            font-size: 13px;
            width: 16px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid var(--border);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: var(--text-weak);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                gap: 0;
                padding: 16px 24px;
                display: none;
                box-shadow: var(--shadow-hover);
                border-top: 1px solid var(--border);
            }
            .main-nav.show {
                display: flex;
            }
            .nav-link {
                padding: 14px 0;
                width: 100%;
                border-bottom: 1px solid var(--border-light);
            }
            .nav-toggle {
                display: flex;
            }
            .mega-wrap {
                width: 100%;
            }
            .mega-btn {
                width: 100%;
                justify-content: space-between;
            }
            .mega-panel {
                position: static;
                width: 100%;
                transform: none;
                opacity: 1;
                visibility: visible;
                display: none;
                box-shadow: none;
                border: none;
                padding: 12px 0;
            }
            .mega-wrap.active .mega-panel {
                display: grid;
            }
            .mega-btn i {
                transition: transform .2s;
            }
            .mega-wrap.active .mega-btn i {
                transform: rotate(180deg);
            }
            .category-hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-text h1 {
                font-size: 31px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-grid::before {
                display: none;
            }
            .scenario-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 28px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 48px;
            }
            .section-head h2 {
                font-size: 22px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .service-grid {
                grid-template-columns: 1fr;
            }
            .service-item {
                flex-direction: row;
            }
            .service-thumb {
                width: 120px;
                height: 100px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 40px 24px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .scenario-wrap {
                padding: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }
            .hero-text h1 {
                font-size: 28px;
            }
            .hero-text>p {
                font-size: 15px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-trust {
                flex-direction: column;
                gap: 12px;
            }
            .service-item {
                flex-direction: column;
            }
            .service-thumb {
                width: 100%;
                height: auto;
                aspect-ratio: 16 / 10;
            }
            .mega-panel {
                grid-template-columns: 1fr;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn {
                width: 100%;
            }
            .footer-contact li {
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
    --primary: #2563EB;
    --primary-dark: #1D4ED8;
    --primary-light: #DBEAFE;
    --accent: #D97706;
    --accent-light: #FEF3C7;
    --body-bg: #F0F5FF;
    --card-bg: #FFFFFF;
    --light-bg: #F8FAFC;
    --border: #E2E8F0;
    --text: #1E293B;
    --text-weak: #64748B;
    --text-light: #475569;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --shadow-card: 0 1px 3px rgba(30,41,59,0.06), 0 4px 12px rgba(30,41,59,0.04);
    --shadow-hover: 0 8px 24px rgba(30,41,59,0.08);
    --container: 1200px;
    --space: 80px;
    --space-sm: 48px;
    --font: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text);
    background: var(--body-bg);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

ul, ol {
    list-style: none;
}

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

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

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.btn-primary {
    background: var(--primary);
    color: #fff !important;
    border-color: var(--primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-hover);
}

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

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

.btn-outline:hover {
    background: var(--primary-light);
    transform: translateY(-1px);
}

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

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
    border-radius: var(--radius-sm);
}

.btn-lg {
    padding: 14px 36px;
    font-size: 17px;
}

/* ========== Header / Nav ========== */
.site-header {
    background: #ffffff;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 8px rgba(30, 41, 59, 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: 18px;
    font-weight: 700;
    color: var(--text) !important;
}

.logo i {
    color: var(--primary);
    font-size: 22px;
}

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

.nav-link {
    padding: 28px 14px 26px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-light);
    position: relative;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}

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

.nav-link.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Mega Menu */
.mega-wrap {
    position: relative;
}

.mega-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
}

.mega-btn:hover,
.mega-wrap:focus-within .mega-btn {
    border-color: var(--primary);
    color: var(--primary);
}

.mega-panel {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 520px;
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-hover);
    padding: 20px;
    display: flex;
    gap: 24px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: all 0.2s ease;
    z-index: 99;
}

.mega-wrap:hover .mega-panel,
.mega-wrap:focus-within .mega-panel {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-col {
    flex: 1;
}

.mega-col h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-weak);
    margin-bottom: 10px;
    letter-spacing: 0.02em;
}

.mega-col a {
    display: block;
    padding: 6px 0;
    font-size: 14px;
    color: var(--text-light);
}

.mega-col a:hover {
    color: var(--primary);
}

.mega-card {
    background: var(--light-bg);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    margin-bottom: 8px;
    transition: background 0.2s;
}

.mega-card:hover {
    background: var(--primary-light);
}

.mega-card strong {
    display: block;
    font-size: 14px;
    color: var(--text);
}

.mega-card span {
    display: block;
    font-size: 13px;
    color: var(--text-weak);
    margin-top: 2px;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 22px;
    color: var(--text);
    cursor: pointer;
    padding: 6px;
}

/* ========== Page Hero ========== */
.page-hero {
    background: linear-gradient(135deg, #F0F5FF 0%, #E8F0FE 60%, #DBEAFE 100%);
    padding: 72px 0 64px;
    position: relative;
    overflow: hidden;
}

.page-hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: linear-gradient(rgba(37, 99, 235, 0.04) 1px, transparent 1px),
                      linear-gradient(90deg, rgba(37, 99, 235, 0.04) 1px, transparent 1px);
    background-size: 32px 32px;
    pointer-events: none;
}

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

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-weak);
    margin-bottom: 28px;
}

.breadcrumb a {
    color: var(--text-weak);
}

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

.breadcrumb .sep {
    color: #CBD5E1;
}

.breadcrumb .current {
    color: var(--text-light);
    font-weight: 500;
}

.page-hero h1 {
    font-size: 36px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
    margin-bottom: 16px;
}

.page-hero .hero-sub {
    font-size: 17px;
    color: var(--text-light);
    max-width: 620px;
    line-height: 1.8;
    margin-bottom: 28px;
}

.hero-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

/* ========== Intro Section ========== */
.intro-section {
    padding: var(--space) 0;
    background: #ffffff;
}

.intro-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 56px;
    align-items: center;
}

.intro-text .section-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    display: inline-block;
}

.intro-text h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.4;
    margin-bottom: 20px;
}

.intro-text p {
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.8;
}

.intro-media {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.intro-media img {
    width: 100%;
    height: 340px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    transition: transform 0.4s ease;
}

.intro-media:hover img {
    transform: scale(1.02);
}

/* ========== Process Section ========== */
.process-section {
    padding: var(--space) 0;
    background: var(--light-bg);
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.section-header p {
    color: var(--text-weak);
    max-width: 560px;
    margin: 0 auto;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    position: relative;
}

.process-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow-card);
    transition: all 0.25s ease;
    position: relative;
}

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

.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 700;
    font-size: 18px;
    border-radius: 50%;
    margin-bottom: 18px;
}

.process-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 10px;
}

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

.process-card .fa-arrow-right-long {
    position: absolute;
    right: -18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--border);
    font-size: 18px;
    z-index: 1;
}

/* ========== Service Cards ========== */
.service-section {
    padding: var(--space) 0;
    background: #fff;
}

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

.service-card {
    display: flex;
    gap: 20px;
    background: var(--light-bg);
    border-radius: var(--radius-md);
    padding: 20px;
    transition: all 0.25s ease;
}

.service-card:hover {
    background: #fff;
    box-shadow: var(--shadow-hover);
}

.service-card .thumb {
    flex-shrink: 0;
    width: 160px;
    height: 120px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.service-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.service-card:hover .thumb img {
    transform: scale(1.03);
}

.service-card .body {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.service-card .badge {
    display: inline-block;
    align-self: flex-start;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 12px;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 999px;
    margin-bottom: 8px;
}

.service-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 8px;
    line-height: 1.4;
}

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

.service-card .card-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-top: 10px;
}

.service-card .card-link i {
    font-size: 12px;
    margin-left: 4px;
    transition: transform 0.2s;
}

.service-card:hover .card-link i {
    transform: translateX(4px);
}

/* ========== Scenario ========== */
.scenario-section {
    padding: var(--space) 0;
    background: var(--body-bg);
}

.scenario-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.scenario-card {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-card);
    transition: all 0.25s ease;
    text-align: center;
}

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

.scenario-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-sm);
    background: var(--primary-light);
    color: var(--primary);
    font-size: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.scenario-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.scenario-card p {
    font-size: 14px;
    color: var(--text-weak);
}

/* ========== FAQ ========== */
.faq-section {
    padding: var(--space) 0;
    background: #fff;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--light-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}

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

.faq-item summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    list-style: none;
    transition: color 0.2s;
}

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

.faq-item summary i {
    font-size: 16px;
    color: var(--text-weak);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

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

.faq-item[open] summary i {
    transform: rotate(45deg);
    color: var(--primary);
}

.faq-item[open] {
    border-color: var(--primary);
    box-shadow: 0 0 0 1px rgba(37, 99, 235, 0.1);
}

.faq-answer {
    padding: 0 24px 18px;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.75;
    border-top: 1px solid var(--border);
    padding-top: 14px;
}

/* ========== CTA ========== */
.cta-section {
    padding: var(--space) 0;
    background: linear-gradient(135deg, #DBEAFE 0%, #F0F5FF 50%, #E0E7FF 100%);
}

.cta-box {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 48px 56px;
    text-align: center;
    box-shadow: var(--shadow-card);
    max-width: 900px;
    margin: 0 auto;
    border: 1px solid var(--border);
}

.cta-box h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 12px;
}

.cta-box p {
    color: var(--text-light);
    margin-bottom: 32px;
    font-size: 16px;
}

.cta-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-note {
    margin-top: 20px;
    font-size: 13px;
    color: var(--text-weak);
}

/* ========== Footer ========== */
.site-footer {
    background: #F1F5F9;
    color: var(--text-light);
    padding: 56px 0 0;
    border-top: 1px solid var(--border);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .logo {
    margin-bottom: 12px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-weak);
    max-width: 280px;
    line-height: 1.7;
}

.footer-title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 16px;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a,
.footer-contact li {
    font-size: 14px;
    color: var(--text-light);
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 10px;
}

.footer-contact i {
    color: var(--primary);
    margin-top: 4px;
    width: 16px;
    text-align: center;
}

.footer-bottom {
    border-top: 1px solid var(--border);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-weak);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .process-card .fa-arrow-right-long {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
    .intro-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .nav-link {
        padding: 24px 10px 22px;
        font-size: 14px;
    }
    .mega-panel {
        width: 440px;
    }
}

@media (max-width: 768px) {
    :root {
        --space: 48px;
    }
    .container {
        padding: 0 16px;
    }
    .site-header {
        height: auto;
    }
    .header-inner {
        height: 64px;
        flex-wrap: wrap;
    }
    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        border-bottom: 1px solid var(--border);
        padding: 8px 16px 16px;
        box-shadow: var(--shadow-card);
    }
    .main-nav.open {
        display: flex;
    }
    .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--border);
        font-size: 15px;
    }
    .nav-link.active {
        color: var(--primary);
    }
    .header-right {
        margin-left: auto;
    }
    .mega-panel {
        position: static;
        width: 100%;
        border: none;
        box-shadow: none;
        padding: 12px 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        display: none;
        background: var(--light-bg);
        border-radius: var(--radius-sm);
        margin-top: 8px;
    }
    .mega-wrap:hover .mega-panel,
    .mega-wrap:focus-within .mega-panel {
        display: flex;
    }
    .mega-btn {
        display: none;
    }
    .mega-panel {
        flex-direction: column;
        gap: 16px;
        padding: 16px;
    }
    .nav-toggle {
        display: block;
    }
    .page-hero {
        padding: 48px 0 40px;
    }
    .page-hero h1 {
        font-size: 28px;
    }
    .hero-actions {
        flex-direction: column;
    }
    .hero-actions .btn {
        width: 100%;
    }
    .service-grid,
    .scenario-grid {
        grid-template-columns: 1fr;
    }
    .service-card {
        flex-direction: column;
    }
    .service-card .thumb {
        width: 100%;
        height: 160px;
    }
    .section-header h2 {
        font-size: 22px;
    }
    .cta-box {
        padding: 32px 20px;
    }
    .cta-box h2 {
        font-size: 22px;
    }
    .cta-actions .btn {
        width: 100%;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
}

@media (max-width: 576px) {
    .btn {
        width: 100%;
        padding: 12px 20px;
    }
    .page-hero h1 {
        font-size: 26px;
    }
    .intro-text h2 {
        font-size: 22px;
    }
    .process-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .footer-brand p {
        max-width: 100%;
    }
}