/* roulang page: index */
:root {
  --primary: #1B87C5;
  --primary-dark: #15699A;
  --primary-light: #E8F3FA;
  --accent: #F59A1D;
  --accent-light: #FFF4E0;
  --bg: #F4F7FA;
  --card: #FFFFFF;
  --border: #E6EDF3;
  --text: #1F2933;
  --text-secondary: #5A6A7A;
  --text-muted: #8A99A8;
  --success: #2E9E6B;
  --success-light: #E6F4ED;
  --header-h: 64px;
  --radius: 14px;
  --radius-lg: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 16px rgba(31,42,62,.06);
  --shadow-hover: 0 8px 24px rgba(31,42,62,.10);
  --shadow-float: 0 12px 32px rgba(31,42,62,.12);
  --transition: all .28s ease;
  --font-base: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-base);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }
button { font-family: var(--font-base); cursor: pointer; }
input, textarea, select { font-family: var(--font-base); font-size: 14px; }
ul, ol { padding: 0; margin: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; line-height: 1.3; font-weight: 700; color: var(--text); }
p { margin: 0; }
:focus-visible { outline: 3px solid rgba(27,135,197,.35); outline-offset: 2px; }

.grid-container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-head { text-align: center; margin-bottom: 48px; }
.section-head .section-eyebrow {
  display: inline-block;
  font-size: 13px;
  color: var(--primary);
  background: var(--primary-light);
  padding: 4px 14px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: .5px;
  margin-bottom: 12px;
}
.section-head h2 { font-size: 32px; font-weight: 700; color: var(--text); }
.section-head .section-desc { margin-top: 10px; color: var(--text-secondary); font-size: 15px; max-width: 600px; margin-left: auto; margin-right: auto; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  transition: var(--transition);
  text-align: center;
  white-space: nowrap;
  user-select: none;
  background: transparent;
  line-height: 1.2;
}
.btn:active { transform: scale(.97); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--accent); color: #fff; box-shadow: 0 6px 16px rgba(245,154,29,.28); }
.btn-secondary { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-secondary:hover { background: var(--primary-light); color: var(--primary-dark); border-color: var(--primary-dark); }
.btn-ghost { background: transparent; color: var(--text-secondary); border-color: #D8E2EC; }
.btn-ghost:hover { background: #fff; color: var(--primary); border-color: var(--primary); }
.btn-lg { height: 52px; padding: 0 32px; font-size: 16px; border-radius: 14px; }
.btn-block { width: 100%; }
.btn i { font-size: 16px; }

.badge {
  display: inline-block;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: 6px;
  padding: 4px 12px;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
}

/* ===================== 顶部通告栏 ===================== */
.top-notice {
  background: #fff;
  border-bottom: 1px solid #EEF2F6;
  padding: 7px 0;
  font-size: 13px;
  color: var(--text-muted);
}
.top-notice .grid-container { display: flex; align-items: center; justify-content: center; gap: 8px; }
.top-notice i { color: var(--accent); }

/* ===================== 导航头部 ===================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(255,255,255,.95);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .3s, border-color .3s;
}
.site-header.is-scrolled {
  border-bottom-color: #E6EDF3;
  box-shadow: 0 4px 20px rgba(31,42,62,.05);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-h); gap: 24px; }
.brand-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-logo:hover { opacity: .92; }

.logo-icon { position: relative; width: 42px; height: 42px; display: inline-block; flex-shrink: 0; }
.logo-icon .cloud {
  position: absolute;
  bottom: 6px; left: 2px;
  width: 30px; height: 20px;
  background: var(--primary);
  border-radius: 14px;
}
.logo-icon .cloud::before {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  background: var(--primary);
  border-radius: 50%;
  top: -7px; left: 5px;
}
.logo-icon .cloud::after {
  content: '';
  position: absolute;
  width: 10px; height: 10px;
  background: var(--primary);
  border-radius: 50%;
  top: -4px; left: 16px;
}
.logo-icon .phone {
  position: absolute;
  top: 0; right: 0;
  width: 18px; height: 28px;
  border: 3px solid var(--accent);
  border-radius: 7px;
  background: #fff;
  z-index: 1;
}
.logo-icon .phone::before {
  content: '';
  position: absolute;
  top: 4px; left: 50%;
  transform: translateX(-50%);
  width: 6px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.brand-text { font-size: 20px; font-weight: 700; color: var(--text); line-height: 1.2; }
.brand-text em { font-style: normal; color: var(--primary); }

.main-nav { display: flex; align-items: center; gap: 8px; }
.nav-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 20px;
  border-radius: 18px;
  background: #EEF3F7;
  color: #3A4553;
  font-size: 14px;
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-chip:hover { background: #E2EBF2; color: var(--primary); }
.nav-chip.active { background: var(--primary); color: #fff; font-weight: 600; }

.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.btn-header { height: 40px; padding: 0 20px; font-size: 14px; border-radius: 10px; }

/* ===================== Hero 首屏 ===================== */
.hero-section {
  position: relative;
  padding: 72px 0 80px;
  background: linear-gradient(180deg, #F8FBFE 0%, var(--bg) 100%);
  overflow: hidden;
  min-height: 520px;
  display: flex;
  align-items: center;
}
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: .12;
}
.hero-ring { position: absolute; border-radius: 50%; border: 1px solid rgba(27,135,197,.10); pointer-events: none; z-index: 0; }
.ring-1 { width: 420px; height: 420px; top: -120px; right: -60px; }
.ring-2 { width: 250px; height: 250px; bottom: -60px; left: -50px; border-width: 2px; }
.ring-3 { width: 120px; height: 120px; top: 60px; left: 30%; border-color: rgba(245,154,29,.12); }
.hero-dots {
  position: absolute;
  width: 260px; height: 260px;
  background-image: radial-gradient(rgba(27,135,197,.08) 1px, transparent 1px);
  background-size: 18px 18px;
  right: 12%; bottom: 20px;
  pointer-events: none;
  z-index: 0;
}
.hero-content { position: relative; z-index: 1; }
.hero-text { padding-right: 20px; }
.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero-tag i { color: var(--primary); }
.hero-title { font-size: 42px; font-weight: 700; line-height: 1.25; color: var(--text); margin-bottom: 16px; letter-spacing: .5px; }
.hero-title .highlight { color: var(--primary); position: relative; }
.hero-subtitle { font-size: 16px; line-height: 1.8; color: var(--text-secondary); margin-bottom: 28px; max-width: 440px; }
.hero-actions { display: flex; align-items: center; gap: 16px; margin-bottom: 28px; flex-wrap: wrap; }
.hero-feature-list { display: flex; gap: 18px; flex-wrap: wrap; }
.hero-feature-list li { display: flex; align-items: center; gap: 6px; font-size: 14px; color: var(--text-secondary); }
.hero-feature-list li i { color: var(--success); font-size: 13px; }

.hero-visual { position: relative; display: flex; justify-content: center; align-items: center; padding: 20px 0; }
.hero-phone {
  width: 260px;
  height: 530px;
  border: 8px solid var(--primary);
  border-radius: 40px;
  background: #fff;
  padding: 12px;
  position: relative;
  box-shadow: 0 24px 60px rgba(27,135,197,.18);
  transition: var(--transition);
}
.hero-phone:hover { transform: translateY(-6px) rotate(-1deg); box-shadow: 0 32px 70px rgba(27,135,197,.22); }
.phone-notch {
  position: absolute;
  top: 18px; left: 50%;
  transform: translateX(-50%);
  width: 80px; height: 18px;
  background: var(--primary);
  border-radius: 12px;
  z-index: 3;
}
.phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  overflow: hidden;
  position: relative;
  background: #fff;
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; }
.hero-float-card {
  position: absolute;
  background: #fff;
  border-radius: 12px;
  box-shadow: var(--shadow-float);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  z-index: 4;
  animation: float 4s ease-in-out infinite;
}
.hero-float-card i { color: var(--success); font-size: 16px; }
.float-card-1 { top: 90px; left: -10px; animation-delay: 0s; }
.float-card-2 { bottom: 110px; right: -14px; animation-delay: 1.6s; }
.float-card-2 i { color: var(--accent); }
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* ===================== 信任指标条 ===================== */
.metrics-section { padding: 0 0 80px; margin-top: -20px; }
.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.metric-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.metric-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.metric-icon { width: 48px; height: 48px; margin: 0 auto 14px; display: flex; align-items: center; justify-content: center; border-radius: 50%; font-size: 20px; color: var(--primary); background: var(--primary-light); }
.metric-number { font-size: 32px; font-weight: 700; color: var(--primary); line-height: 1.2; font-variant-numeric: tabular-nums; }
.metric-number em { font-style: normal; color: var(--accent); font-size: 20px; margin-left: 2px; }
.metric-label { font-size: 13px; color: var(--text-muted); margin-top: 6px; }

/* ===================== 特色功能 ===================== */
.features-section { background: #fff; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.feature-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  height: 100%;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--primary);
  opacity: 0;
  transition: var(--transition);
  z-index: 1;
}
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(27,135,197,.25); }
.feature-card:hover::before { opacity: 1; }
.feature-card-img { position: relative; overflow: hidden; aspect-ratio: 16/9; }
.feature-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.feature-card:hover .feature-card-img img { transform: scale(1.05); }
.feature-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.feature-icon {
  width: 42px; height: 42px;
  border-radius: 12px;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
}
.feature-card-body h3 { font-size: 19px; font-weight: 700; margin-bottom: 8px; }
.feature-card-body p { font-size: 14px; color: var(--text-secondary); line-height: 1.7; margin-bottom: 16px; }
.feature-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
}
.feature-link i { transition: transform .3s; font-size: 12px; }
.feature-link:hover i { transform: translateX(4px); }

.feature-card-lg .feature-card-body { padding: 28px; }
.feature-card-lg h3 { font-size: 22px; margin-bottom: 10px; }
.feature-card-lg p { font-size: 15px; }
.feature-card-sm .feature-card-body { padding: 20px 22px; }
.feature-card-sm h3 { font-size: 17px; }
.feature-card-sm p { font-size: 13px; line-height: 1.65; }

/* ===================== 最新动态 ===================== */
.news-section { background: var(--bg); }
.news-chip-group { display: flex; justify-content: center; gap: 10px; margin-bottom: 32px; flex-wrap: wrap; }
.news-chip {
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--border);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}
.news-chip:hover { border-color: var(--primary); color: var(--primary); }
.news-chip.news-chip-active { background: var(--primary); color: #fff; border-color: var(--primary); }
.news-list { display: flex; flex-direction: column; gap: 16px; max-width: 960px; margin: 0 auto; }
.news-item {
  display: flex;
  gap: 20px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  transition: var(--transition);
}
.news-item:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(27,135,197,.2); }
.news-time {
  min-width: 76px;
  width: 76px;
  height: 86px;
  background: var(--primary-light);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: var(--transition);
}
.news-item:hover .news-time { background: var(--primary); }
.news-month { font-size: 12px; color: var(--primary); font-weight: 600; transition: var(--transition); }
.news-day { font-size: 28px; font-weight: 700; color: var(--primary-dark); line-height: 1.1; transition: var(--transition); }
.news-item:hover .news-month, .news-item:hover .news-day { color: #fff; }
.news-body { flex: 1; min-width: 0; }
.news-title { font-size: 16px; font-weight: 600; color: var(--text); margin-bottom: 6px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; transition: var(--transition); }
.news-title a { color: inherit; }
.news-title a:hover { color: var(--primary); }
.news-excerpt { font-size: 14px; color: var(--text-secondary); line-height: 1.6; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 10px; }
.news-meta-row { display: flex; align-items: center; gap: 16px; }
.news-link { display: inline-flex; align-items: center; gap: 4px; font-size: 14px; font-weight: 600; color: var(--primary); }
.news-link i { font-size: 12px; transition: transform .3s; }
.news-link:hover i { transform: translateX(4px); }
.news-empty {
  border: 2px dashed #D3DEE7;
  border-radius: var(--radius);
  min-height: 160px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 14px;
}
.news-empty i { font-size: 36px; color: #C5D4E0; }

/* ===================== 用户评价 ===================== */
.reviews-section { background: #fff; }
.review-card {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  padding: 40px 50px;
}
.review-icon { font-size: 32px; color: var(--primary); opacity: .5; margin-bottom: 20px; display: inline-block; }
.review-stars { display: flex; justify-content: center; gap: 4px; margin-bottom: 16px; }
.review-stars i { color: var(--accent); font-size: 15px; }
.review-text { font-size: 16px; line-height: 1.9; color: var(--text); margin-bottom: 24px; }
.review-author { display: flex; align-items: center; justify-content: center; gap: 10px; }
.review-avatar {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
}
.review-name { font-size: 15px; font-weight: 600; color: var(--text); }
.review-role { font-size: 13px; color: var(--text-muted); }

.orbit { outline: none; }
.orbit-container { padding: 20px 10px; }
.orbit-bullets { display: flex; justify-content: center; gap: 8px; margin-top: 20px; }
.orbit-bullets button {
  width: 8px; height: 8px;
  padding: 0;
  border-radius: 4px;
  background: #D3DEE7;
  border: none;
  transition: var(--transition);
  cursor: pointer;
  display: block;
}
.orbit-bullets button.is-active { width: 24px; background: var(--primary); }
.orbit-bullets button:hover { background: var(--primary); opacity: .7; }
.orbit-previous, .orbit-next {
  background: #fff !important;
  width: 40px !important;
  height: 40px !important;
  border-radius: 50%;
  border: 1px solid var(--border) !important;
  color: var(--text-secondary) !important;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 5;
  font-size: 14px;
}
.orbit-previous { left: 8px; }
.orbit-next { right: 8px; }
.orbit-previous:hover, .orbit-next:hover { background: var(--primary) !important; color: #fff !important; border-color: var(--primary) !important; }
.orbit-previous:active, .orbit-next:active { transform: translateY(-50%) scale(.95); }

/* ===================== 保障条 ===================== */
.guarantee-section { background: #F0F6FA; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.guarantee-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.guarantee-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.guarantee-item:hover { box-shadow: var(--shadow-hover); }
.guarantee-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--success-light);
  color: var(--success);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}
.guarantee-item h4 { font-size: 16px; font-weight: 600; margin-bottom: 6px; }
.guarantee-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.6; }

/* ===================== FAQ ===================== */
.faq-section { background: var(--bg); }
.faq-wrap { max-width: 800px; margin: 0 auto; }
.accordion { border: none !important; background: transparent !important; }
.accordion-item { border: 1px solid var(--border) !important; border-radius: var(--radius) !important; margin-bottom: 12px !important; background: #fff !important; overflow: hidden; transition: var(--transition); }
.accordion-item.is-active { border-color: rgba(27,135,197,.3) !important; box-shadow: var(--shadow); }
.accordion-title {
  display: flex !important;
  align-items: center;
  gap: 14px;
  position: relative !important;
  padding: 18px 24px 18px 24px !important;
  font-size: 15px !important;
  font-weight: 600 !important;
  color: var(--text) !important;
  border-bottom: none !important;
  background: #fff !important;
  transition: var(--transition) !important;
  cursor: pointer;
}
.accordion-title::before {
  content: '';
  position: absolute;
  left: 0; top: 12px; bottom: 12px;
  width: 3px;
  border-radius: 2px;
  background: var(--primary);
  opacity: 0;
  transition: var(--transition);
}
.accordion-item.is-active .accordion-title::before { opacity: 1; }
.accordion-title::after {
  content: '+' !important;
  font-family: var(--font-base) !important;
  font-size: 22px;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: auto;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: #F0F4F8;
  transition: var(--transition);
  transform: none !important;
}
.accordion-item.is-active .accordion-title::after {
  content: '−' !important;
  background: var(--primary);
  color: #fff;
  transform: rotate(0deg) !important;
}
.accordion-title:hover { color: var(--primary) !important; background: #FCFEFF !important; }
.accordion-content { border-top: 1px solid var(--border) !important; background: #FBFDFF !important; padding: 20px 24px !important; }
.accordion-content p { font-size: 14px; line-height: 1.85; color: var(--text-secondary); }

/* ===================== CTA 横幅 ===================== */
.cta-section {
  position: relative;
  background: linear-gradient(135deg, #EAF4FB 0%, #D7EAF7 100%);
  border-top: 1px solid rgba(27,135,197,.15);
  border-bottom: 1px solid rgba(27,135,197,.15);
  overflow: hidden;
  padding: 60px 0;
}
.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-2.webp');
  background-size: cover;
  background-position: center;
  opacity: .14;
}
.cta-inner { position: relative; z-index: 1; text-align: center; max-width: 620px; margin: 0 auto; }
.cta-inner h2 { font-size: 30px; font-weight: 700; margin-bottom: 12px; color: var(--text); }
.cta-inner p { font-size: 15px; color: var(--text-secondary); margin-bottom: 28px; }
.cta-actions { display: flex; justify-content: center; gap: 16px; flex-wrap: wrap; }
.btn-cta { height: 52px; padding: 0 36px; font-size: 16px; border-radius: 14px; background: var(--primary); color: #fff; }
.btn-cta:hover { background: var(--accent); color: #fff; box-shadow: 0 6px 20px rgba(245,154,29,.3); }

/* ===================== 页脚 ===================== */
.site-footer { background: #12202E; color: #9FB0C0; font-size: 14px; }
.footer-main { padding: 56px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .brand-logo { margin-bottom: 16px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text em { color: #7CC0E8; }
.footer-brand .logo-icon .cloud { background: #7CC0E8; }
.footer-brand .logo-icon .cloud::before, .footer-brand .logo-icon .cloud::after { background: #7CC0E8; }
.footer-brand .logo-icon .phone { border-color: var(--accent); background: #12202E; }
.footer-desc { font-size: 13px; line-height: 1.8; color: #8296A8; margin-top: 14px; max-width: 260px; }
.footer-col h5 { font-size: 15px; font-weight: 600; color: #fff; margin-bottom: 18px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { color: #9FB0C0; font-size: 14px; transition: var(--transition); }
.footer-col ul li a:hover { color: #7CC0E8; padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  font-size: 13px;
  color: #6B8092;
  text-align: center;
}
.footer-bottom a { color: #7CC0E8; }

/* ===================== 登录弹窗 ===================== */
.reveal.login-modal {
  border-radius: var(--radius-lg);
  border: none;
  box-shadow: 0 30px 80px rgba(31,42,62,.25);
  padding: 40px 36px;
  max-width: 420px;
  overflow-y: visible;
}
.login-modal .close-button { color: var(--text-muted); font-size: 28px; transition: var(--transition); }
.login-modal .close-button:hover { color: var(--primary); }
.login-modal-logo { text-align: center; margin-bottom: 24px; }
.login-modal-logo .logo-icon { margin-bottom: 8px; }
.login-modal-logo h3 { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.login-modal-logo p { font-size: 13px; color: var(--text-muted); }
.login-modal form label { font-size: 14px; font-weight: 600; color: var(--text); display: block; margin-bottom: 18px; }
.login-modal form label > span { display: block; margin-bottom: 8px; }
.input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0 14px;
  height: 46px;
  background: #FBFDFF;
  transition: var(--transition);
}
.input-wrap:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(27,135,197,.12); }
.input-wrap i { color: var(--text-muted); font-size: 14px; }
.input-wrap input { flex: 1; border: none; background: transparent; outline: none; height: 100%; font-size: 14px; color: var(--text); }
.input-wrap input::placeholder { color: #B5C2CE; }
.code-row { display: flex; gap: 10px; }
.code-input { flex: 1; display: flex; align-items: center; gap: 10px; border: 1px solid var(--border); border-radius: 10px; padding: 0 14px; height: 46px; background: #FBFDFF; transition: var(--transition); }
.code-input:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(27,135,197,.12); }
.code-input i { color: var(--text-muted); font-size: 14px; }
.code-input input { flex: 1; border: none; background: transparent; outline: none; height: 100%; font-size: 14px; width: 60px; }
.code-btn { height: 40px; padding: 0 14px; font-size: 13px; flex-shrink: 0; border-radius: 8px; }
.login-tip { text-align: center; font-size: 12px; color: var(--text-muted); margin-top: 14px; }
.login-feedback { text-align: center; font-size: 13px; color: var(--success); background: var(--success-light); border-radius: 8px; padding: 8px; margin-top: 12px; display: none; }

/* ===================== 响应式 ===================== */
@media (max-width: 1023.98px) {
  .hero-title { font-size: 36px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .hero-phone { width: 220px; height: 450px; }
  .float-card-1 { left: 0; }
  .float-card-2 { right: 0; }
}

@media (max-width: 639.98px) {
  .section { padding: 40px 0; }
  .grid-container { padding: 0 16px; }
  .top-notice .grid-container { justify-content: center; }
  .top-notice p span { display: none; }
  .site-header { height: auto; min-height: var(--header-h); }
  .header-inner { flex-wrap: wrap; gap: 8px; padding-top: 8px; padding-bottom: 8px; }
  .main-nav { order: 3; width: 100%; display: flex; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 6px; }
  .nav-chip { flex-shrink: 0; }
  .header-actions { margin-left: auto; }
  .hero-section { padding: 48px 0 56px; }
  .hero-content .cell { width: 100% !important; }
  .hero-text { padding-right: 0; margin-bottom: 40px; }
  .hero-title { font-size: 30px; }
  .hero-subtitle { font-size: 15px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { width: 100%; }
  .hero-float-card { display: none; }
  .hero-visual { padding: 0; }
  .hero-phone { width: 220px; height: 450px; }
  .metrics-section { padding-bottom: 40px; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .metric-number { font-size: 26px; }
  .metric-icon { width: 40px; height: 40px; font-size: 16px; }
  .feature-card-body, .feature-card-lg .feature-card-body { padding: 20px; }
  .news-item { flex-direction: column; padding: 18px; }
  .news-time { width: 100%; height: 48px; flex-direction: row; gap: 8px; min-width: 0; }
  .news-month { font-size: 13px; }
  .news-day { font-size: 20px; }
  .guarantee-grid { grid-template-columns: 1fr; gap: 16px; }
  .guarantee-item { padding: 18px; }
  .feedback-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-main { padding: 40px 0 30px; }
  .review-card { padding: 30px 20px; }
  .orbit-previous { left: 0; }
  .orbit-next { right: 0; }
  .cta-inner h2 { font-size: 24px; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { width: 100%; }
  .reveal.login-modal { padding: 30px 22px; }
  .accordion-title { padding: 16px 18px !important; font-size: 14px !important; }
  .accordion-content { padding: 16px 18px !important; }
}

@media (max-width: 374.98px) {
  .hero-title { font-size: 26px; }
  .brand-text { font-size: 17px; }
  .btn-header { padding: 0 14px; }
}

/* roulang page: category1 */
:root {
  --primary: #1B87C5;
  --primary-dark: #1470A8;
  --primary-light: rgba(27, 135, 197, 0.10);
  --accent: #F59A1D;
  --accent-light: rgba(245, 154, 29, 0.12);
  --bg: #F4F7FA;
  --card: #FFFFFF;
  --border: #E3EAF0;
  --text: #1F2933;
  --text-secondary: #5A6A7A;
  --text-muted: #8A99A8;
  --success: #2E9E6B;
  --radius-xl: 18px;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 16px rgba(31, 42, 62, 0.06);
  --shadow-hover: 0 8px 24px rgba(31, 42, 62, 0.10);
  --shadow-hero: 0 12px 40px rgba(31, 42, 62, 0.12);
  --header-height: 64px;
  --space-xl: 90px;
  --space-lg: 70px;
  --space-md: 50px;
  --space-sm: 30px;
  --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

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

img {
  max-width: 100%;
  height: auto;
  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;
  border: none;
  outline: none;
  background: none;
}

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

.section {
  padding: var(--space-lg) 0;
}

.section-sm {
  padding: var(--space-md) 0;
}

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

.section-head h2 {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
}

.section-head p {
  color: var(--text-secondary);
  font-size: 16px;
  max-width: 680px;
  margin: 0 auto;
}

/* ===== Header / Nav ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 24px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

.logo-icon {
  position: relative;
  width: 32px;
  height: 32px;
  display: inline-block;
  flex-shrink: 0;
}

.logo-icon .cloud {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 24px;
  height: 14px;
  background: var(--primary);
  border-radius: 20px;
}

.logo-icon .cloud::before {
  content: "";
  position: absolute;
  top: -6px;
  left: 4px;
  width: 12px;
  height: 12px;
  background: var(--primary);
  border-radius: 50%;
}

.logo-icon .cloud::after {
  content: "";
  position: absolute;
  top: -3px;
  right: 3px;
  width: 9px;
  height: 9px;
  background: var(--primary);
  border-radius: 50%;
}

.logo-icon .phone {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 14px;
  height: 22px;
  border: 2.5px solid var(--accent);
  border-radius: 6px;
}

.logo-icon .phone::before {
  content: "";
  position: absolute;
  top: 3px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.brand-text {
  font-size: 17px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.brand-text em {
  font-style: normal;
  color: var(--primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar {
  display: none;
}

.nav-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 18px;
  background: #EEF3F7;
  color: #40505F;
  font-size: 14px;
  font-weight: 500;
  border-radius: 18px;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.nav-chip:hover {
  background: #E2EAF1;
  color: var(--primary);
}

.nav-chip.active {
  background: var(--primary);
  color: #fff;
}

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

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: var(--primary);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-primary i {
  margin-left: 8px;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 0 28px;
  background: var(--card);
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid var(--primary);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-outline:hover {
  background: rgba(27, 135, 197, 0.05);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
}

.btn-outline:active {
  transform: scale(0.97);
}

.btn-large {
  height: 52px;
  padding: 0 38px;
  font-size: 16px;
  border-radius: 14px;
}

/* ===== Hero ===== */
.cate-hero {
  position: relative;
  padding: 70px 0 60px;
  overflow: hidden;
  background: var(--bg);
}

.cate-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 360px;
  height: 360px;
  border: 2px solid rgba(27, 135, 197, 0.08);
  border-radius: 50%;
  pointer-events: none;
}

.cate-hero::after {
  content: "";
  position: absolute;
  bottom: 40px;
  left: 20%;
  width: 220px;
  height: 220px;
  border: 2px solid rgba(245, 154, 29, 0.07);
  border-radius: 50%;
  pointer-events: none;
}

.cate-hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 60px;
}

.cate-hero-content h1 {
  font-size: 42px;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 16px;
  color: var(--text);
}

.cate-hero-content h1 span {
  color: var(--primary);
}

.cate-hero-content .lead {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 520px;
}

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

.cate-hero-meta {
  display: flex;
  gap: 24px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.cate-hero-meta .meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

.cate-hero-meta .meta-item i {
  color: var(--success);
  font-size: 16px;
}

.cate-hero-media {
  position: relative;
}

.cate-hero-banner {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-hero);
  position: relative;
  min-height: 300px;
}

.cate-hero-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

.cate-hero-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 135, 197, 0.12) 0%, rgba(245, 154, 29, 0.06) 100%);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 20px 0 0;
  font-size: 13px;
  color: var(--text-muted);
}

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

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

.breadcrumb .sep {
  margin: 0 8px;
  color: #C4D0DB;
}

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

/* ===== Feature Cards ===== */
.feature-card-row {
  display: grid;
  gap: 40px;
  margin-bottom: 50px;
}

.feature-card-row:last-child {
  margin-bottom: 0;
}

.feature-card-row .feature-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--shadow);
  transition: all 0.3s ease;
}

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

.feature-card-row .feature-card.reverse .feature-media {
  order: 2;
}

.feature-card-row .feature-card.reverse .feature-body {
  order: 1;
}

.feature-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16 / 10;
  position: relative;
}

.feature-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-media::after {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
}

.feature-body .tag {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 13px;
  font-weight: 500;
  border-radius: 6px;
  margin-bottom: 16px;
}

.feature-body h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 14px;
  line-height: 1.4;
}

.feature-body p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.8;
  margin-bottom: 20px;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: gap 0.2s ease;
}

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

/* ===== Stats Bar ===== */
.stats-bar {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
  padding: 40px 48px;
  margin: var(--space-lg) 0;
}

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

.stats-item {
  text-align: center;
  padding: 16px 8px;
}

.stats-item .num {
  font-size: 38px;
  font-weight: 800;
  color: var(--primary);
  font-feature-settings: "tnum";
  line-height: 1.2;
}

.stats-item .num small {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-muted);
}

.stats-item .label {
  margin-top: 8px;
  font-size: 14px;
  color: var(--text-muted);
}

/* ===== Process Steps ===== */
.process-section {
  background: var(--card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 50px;
  margin-bottom: var(--space-lg);
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  margin-top: 36px;
}

.process-step {
  position: relative;
  padding: 24px 20px;
  border-radius: var(--radius-lg);
  background: #F8FBFC;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

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

.process-step .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 16px;
}

.process-step .step-title {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

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

/* ===== Sub Category Chips ===== */
.subcat-group {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 40px;
}

.subcat-chip {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  border-radius: 18px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.subcat-chip:hover,
.subcat-chip.active {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

/* ===== FAQ ===== */
.faq-section {
  background: var(--card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  padding: 50px;
  margin-bottom: var(--space-lg);
}

.faq-head {
  margin-bottom: 32px;
}

.faq-head h2 {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 8px;
}

.faq-head p {
  color: var(--text-secondary);
  font-size: 15px;
}

.faq-list .faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-list .faq-item:last-child {
  border-bottom: none;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 24px 0;
  cursor: pointer;
  transition: color 0.2s ease;
}

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

.faq-q-title {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  padding-left: 14px;
  position: relative;
  transition: color 0.2s ease;
}

.faq-q-title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  height: calc(100% - 8px);
  width: 3px;
  background: var(--primary);
  border-radius: 3px;
}

.faq-q-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #F0F5F8;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 20px;
  font-weight: 300;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.faq-q-icon.open {
  background: var(--primary-light);
  color: var(--primary);
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 0 24px 14px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  display: none;
}

.faq-answer.active {
  display: block;
}

/* ===== CTA Banner ===== */
.cta-banner {
  position: relative;
  background: linear-gradient(120deg, #EAF4FA 0%, #FEF7EC 100%);
  border-radius: var(--radius-xl);
  padding: 60px;
  text-align: center;
  overflow: hidden;
  margin-bottom: var(--space-lg);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  border: 3px solid rgba(27, 135, 197, 0.1);
  border-radius: 50%;
}

.cta-banner h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.cta-banner p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.site-footer {
  background: #12202E;
  color: rgba(255, 255, 255, 0.75);
  margin-top: var(--space-lg);
}

.footer-main {
  padding: 60px 0 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .brand-logo {
  margin-bottom: 16px;
}

.footer-brand .brand-text {
  color: #fff;
}

.footer-brand .logo-icon .cloud {
  background: var(--primary);
}

.footer-brand .logo-icon .phone {
  border-color: var(--accent);
}

.footer-desc {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.55);
  max-width: 360px;
}

.footer-col h5 {
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 16px;
}

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

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.55);
  font-size: 14px;
  transition: color 0.2s ease;
}

.footer-col ul li a:hover {
  color: #7CC0E8;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
}

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

.footer-bottom a:hover {
  color: #7CC0E8;
}

/* ===== Responsive ===== */
@media (max-width: 1023px) {
  .container {
    padding: 0 20px;
  }

  .header-inner {
    padding: 0 20px;
    gap: 16px;
  }

  .header-cta {
    display: none;
  }

  .cate-hero {
    padding: 50px 0 45px;
  }

  .cate-hero-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .cate-hero-banner {
    min-height: 240px;
  }

  .feature-card-row .feature-card {
    grid-template-columns: 1fr;
    gap: 32px;
    padding: 28px;
  }

  .feature-card-row .feature-card.reverse .feature-media {
    order: 0;
  }

  .feature-card-row .feature-card.reverse .feature-body {
    order: 0;
  }

  .stats-bar {
    padding: 32px;
    overflow-x: auto;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    min-width: 500px;
  }

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

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

@media (max-width: 639px) {
  .container {
    padding: 0 16px;
  }

  .section {
    padding: 50px 0;
  }

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

  .header-inner {
    height: auto;
    flex-wrap: wrap;
    padding: 12px 16px;
    gap: 10px;
  }

  .brand-logo {
    margin-right: auto;
  }

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

  .main-nav {
    order: 3;
    width: 100%;
    padding: 4px 0;
    -webkit-overflow-scrolling: touch;
  }

  .nav-chip {
    height: 32px;
    padding: 0 14px;
    font-size: 13px;
  }

  .cate-hero {
    padding: 36px 0 32px;
  }

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

  .cate-hero-content .lead {
    font-size: 15px;
  }

  .cate-hero-meta {
    gap: 14px;
  }

  .cate-hero-buttons .btn-primary,
  .cate-hero-buttons .btn-outline {
    height: 40px;
    font-size: 14px;
    padding: 0 20px;
  }

  .feature-card-row .feature-card {
    padding: 20px;
  }

  .feature-body h3 {
    font-size: 20px;
  }

  .feature-body p {
    font-size: 14px;
  }

  .stats-bar {
    padding: 24px 20px;
    margin: 36px 0;
  }

  .process-section {
    padding: 30px 20px;
  }

  .faq-section {
    padding: 30px 20px;
  }

  .faq-q-title {
    font-size: 14px;
    padding-left: 10px;
  }

  .cta-banner {
    padding: 40px 24px;
  }

  .cta-banner h2 {
    font-size: 24px;
  }

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

  .footer-main {
    padding: 40px 0 30px;
  }

  .footer-bottom {
    font-size: 12px;
    padding: 16px 0;
  }
}

/* ===== Utilities ===== */
.text-center {
  text-align: center;
}

.mt-lg {
  margin-top: 50px;
}

.mb-lg {
  margin-bottom: 50px;
}

/* roulang page: article */
:root {
  --primary: #1B87C5;
  --primary-dark: #1471A6;
  --primary-light: #EAF4FA;
  --accent: #F59A1D;
  --bg: #F4F7FA;
  --card: #FFFFFF;
  --border: #E3EAF0;
  --text: #1F2933;
  --text-2: #5A6A7A;
  --text-3: #8A99A8;
  --green: #2E9E6B;
  --dark: #12202E;
  --radius-card: 16px;
  --radius-btn: 12px;
  --radius-img: 12px;
  --shadow-card: 0 4px 16px rgba(31,42,62,.06);
  --shadow-hover: 0 8px 24px rgba(31,42,62,.10);
  --transition: all .25s ease;
  --font-stack: system-ui, -apple-system, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-stack);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--accent); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
ul, ol, figure, h1, h2, h3, h4, h5, h6, p { margin: 0; padding: 0; }
:focus-visible { outline: 3px solid rgba(27,135,197,.35); outline-offset: 2px; border-radius: 4px; }

.container, .grid-container { max-width: 1200px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(227,234,240,.9);
}
.top-tip {
  background: #fff;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-3);
  text-align: center;
  padding: 8px 16px;
  letter-spacing: .3px;
}
.header-inner {
  display: flex;
  align-items: center;
  height: 64px;
  gap: 24px;
}
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  position: relative;
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary), #3FA7E8);
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(27,135,197,.24);
  flex: 0 0 36px;
}
.logo-icon .cloud {
  position: absolute;
  top: 9px;
  left: 8px;
  width: 20px;
  height: 8px;
  background: #fff;
  border-radius: 50%;
}
.logo-icon .cloud::before,
.logo-icon .cloud::after {
  content: "";
  position: absolute;
  background: #fff;
  border-radius: 50%;
}
.logo-icon .cloud::before { width: 11px; height: 11px; top: -6px; left: 3px; }
.logo-icon .cloud::after { width: 8px; height: 8px; top: -4px; right: 2px; }
.logo-icon .phone {
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 12px;
  height: 9px;
  border: 2px solid #fff;
  border-radius: 4px;
}
.brand-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  letter-spacing: .4px;
  line-height: 1.2;
  white-space: nowrap;
}
.brand-text em { color: var(--primary); font-style: normal; }

.main-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}
.nav-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 36px;
  padding: 0 18px;
  border-radius: 18px;
  background: #EEF3F7;
  color: #33455A;
  font-size: 14px;
  font-weight: 600;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: var(--transition);
  line-height: 1;
}
.nav-chip:hover {
  background: #E2EAF2;
  color: var(--primary);
  transform: translateY(-1px);
}
.nav-chip.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 10px rgba(27,135,197,.25);
}
.nav-cta { margin-left: 8px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 26px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  text-decoration: none;
  line-height: 1;
  transition: var(--transition);
}
.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(27,135,197,.25);
}
.btn-primary:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(245,154,29,.30);
}
.btn-primary:active { transform: scale(.97); }
.btn-secondary {
  background: #fff;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
  transform: translateY(-2px);
}
.btn-secondary:active { transform: scale(.97); }
.btn-light {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 12px rgba(18,32,46,.08);
}
.btn-light:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

.breadcrumb { padding: 24px 0 6px; font-size: 14px; color: var(--text-3); }
.breadcrumb a { color: var(--text-3); text-decoration: none; transition: var(--transition); }
.breadcrumb a:hover { color: var(--primary); }
.crumb-sep { margin: 0 10px; color: #C7D3DE; }
.breadcrumb .current { color: var(--text-2); font-weight: 600; }

.article-wrap { padding: 28px 0 64px; }
.article-container { max-width: 880px; }
.article-header { max-width: 880px; margin: 0 auto 40px; text-align: center; }
.article-meta-top { display: flex; justify-content: center; gap: 10px; margin-bottom: 18px; flex-wrap: wrap; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 13px;
  border-radius: 6px;
  background: rgba(27,135,197,.10);
  color: var(--primary);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.6;
}
.badge-brand { background: rgba(245,154,29,.12); color: #C67A08; }
.article-header h1 {
  font-size: 30px;
  line-height: 1.35;
  margin: 0 0 20px;
  font-weight: 700;
  letter-spacing: .3px;
  color: var(--text);
}
.article-meta {
  display: flex;
  justify-content: center;
  gap: 26px;
  flex-wrap: wrap;
  font-size: 14px;
  color: var(--text-3);
}
.article-meta i { margin-right: 6px; color: var(--primary); }

.article-body {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 44px 56px;
}
.article-cover { margin: 0 0 38px; }
.article-cover img {
  width: 100%;
  height: 360px;
  object-fit: cover;
  border-radius: var(--radius-img);
  box-shadow: 0 6px 18px rgba(31,42,62,.08);
}
.article-body h2 {
  font-size: 24px;
  line-height: 1.5;
  margin: 42px 0 16px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  border-radius: 0 4px 4px 0;
  font-weight: 700;
  color: var(--text);
}
.article-body h3 {
  font-size: 20px;
  line-height: 1.5;
  margin: 34px 0 12px;
  font-weight: 700;
  color: var(--text);
}
.article-body p {
  font-size: 16px;
  line-height: 1.9;
  color: #333F4D;
  margin: 0 0 20px;
}
.article-body ul,
.article-body ol { margin: 0 0 24px; padding-left: 24px; }
.article-body li { margin-bottom: 8px; line-height: 1.8; color: #333F4D; }
.article-body blockquote {
  margin: 28px 0;
  padding: 16px 24px;
  border-left: 4px solid var(--primary);
  background: var(--primary-light);
  border-radius: 0 10px 10px 0;
  color: var(--text-2);
  font-size: 15px;
}
.article-body img { width: 100%; border-radius: var(--radius-img); margin: 14px 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 26px 0; font-size: 14px; }
.article-body th,
.article-body td { border: 1px solid var(--border); padding: 10px 14px; text-align: left; vertical-align: top; }
.article-body th { background: var(--primary-light); color: var(--text); font-weight: 600; }
.article-body pre {
  background: var(--dark);
  color: #D6E4F0;
  padding: 18px 22px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.7;
  margin: 24px 0;
}
.article-body code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.article-body a { text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { text-decoration: none; }
.article-body .note {
  background: rgba(245,154,29,.10);
  border: 1px solid rgba(245,154,29,.20);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 14px;
  color: #8A5B00;
  margin: 24px 0;
}

.article-tags {
  max-width: 720px;
  margin: 26px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}
.tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 16px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-2);
  font-size: 13px;
  font-weight: 500;
  transition: var(--transition);
  line-height: 1.5;
}
.tag:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.article-actions {
  max-width: 720px;
  margin: 26px auto 0;
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.not-found {
  max-width: 720px;
  margin: 60px auto;
  text-align: center;
  background: #fff;
  border: 1px dashed #C7D3DE;
  border-radius: var(--radius-card);
  padding: 80px 40px;
}
.not-found i { font-size: 46px; color: var(--text-3); margin-bottom: 18px; }
.not-found h2 { font-size: 24px; color: var(--text); margin-bottom: 10px; }
.not-found p { color: var(--text-3); margin-bottom: 28px; }

.related-section {
  background: var(--bg);
  padding: 60px 0 70px;
  border-top: 1px solid var(--border);
}
.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  flex-wrap: wrap;
  gap: 12px;
}
.section-head h2 { font-size: 26px; font-weight: 700; color: var(--text); margin: 0; }
.section-link { font-size: 14px; font-weight: 600; color: var(--text-2); text-decoration: none; display: inline-flex; align-items: center; gap: 6px; }
.section-link:hover { color: var(--primary); }
.related-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  height: 100%;
  display: flex;
  flex-direction: column;
}
.related-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(27,135,197,.30);
}
.related-card img { width: 100%; height: 180px; object-fit: cover; }
.related-content { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.related-content h3 { font-size: 16px; font-weight: 600; line-height: 1.5; color: var(--text); margin-bottom: 10px; }
.related-content h3 a { color: inherit; text-decoration: none; transition: var(--transition); }
.related-content h3 a:hover { color: var(--primary); }
.related-meta { margin-top: auto; display: flex; gap: 14px; font-size: 13px; color: var(--text-3); }
.related-meta i { color: var(--primary); margin-right: 5px; }

.cta-banner {
  position: relative;
  padding: 74px 20px;
  text-align: center;
  background: linear-gradient(135deg, rgba(27,135,197,.10), rgba(245,154,29,.08)), var(--bg);
  border-top: 1px solid var(--border);
  overflow: hidden;
}
.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-1.webp') center / cover no-repeat;
  opacity: .10;
}
.cta-banner .grid-container { position: relative; z-index: 1; }
.cta-banner h2 { font-size: 30px; font-weight: 700; color: var(--text); margin: 0 0 12px; }
.cta-banner p { color: var(--text-2); margin-bottom: 30px; font-size: 16px; }
.cta-banner .btn { height: 48px; padding: 0 32px; font-size: 16px; }

.site-footer { background: var(--dark); color: #A9BCCE; font-size: 14px; }
.footer-main { padding: 60px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text em { color: #7CC0E8; }
.footer-desc {
  color: #7C8EA0;
  margin-top: 16px;
  line-height: 1.8;
  max-width: 330px;
  font-size: 14px;
}
.footer-col h5 { color: #fff; font-size: 15px; margin: 0 0 16px; font-weight: 600; letter-spacing: .4px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: #7C8EA0; text-decoration: none; transition: var(--transition); }
.footer-col a:hover { color: #7CC0E8; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 20px 0;
  color: #66809A;
  font-size: 13px;
  text-align: center;
  letter-spacing: .3px;
}
.footer-bottom a { color: #7C8EA0; text-decoration: none; }
.footer-bottom a:hover { color: #7CC0E8; }

@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .article-body { padding: 36px 32px; }
}

@media (max-width: 768px) {
  .header-inner { height: 60px; gap: 12px; }
  .brand-text { font-size: 18px; }
  .nav-cta { height: 38px; padding: 0 16px; font-size: 14px; }
  .article-header h1 { font-size: 26px; }
  .article-body { padding: 28px 22px; }
  .article-cover img { height: 220px; }
  .cta-banner h2 { font-size: 26px; }
  .related-card img { height: 160px; }
}

@media (max-width: 640px) {
  .top-tip { font-size: 12px; padding: 6px 12px; line-height: 1.5; }
  .header-inner {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 0 8px;
    row-gap: 10px;
  }
  .brand-logo { order: 1; }
  .nav-cta { order: 2; margin-left: auto; height: 38px; padding: 0 16px; font-size: 14px; }
  .main-nav {
    order: 3;
    width: 100%;
    margin-left: 0;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .main-nav::-webkit-scrollbar { display: none; }
  .nav-chip { height: 34px; padding: 0 14px; font-size: 13px; flex-shrink: 0; }
  .breadcrumb { padding: 18px 0 4px; font-size: 13px; }
  .crumb-sep { margin: 0 6px; }
  .article-wrap { padding: 20px 0 44px; }
  .article-header { margin-bottom: 28px; }
  .article-header h1 { font-size: 22px; }
  .article-meta { gap: 16px; font-size: 13px; }
  .article-body {
    padding: 20px 16px;
    border-radius: 12px;
  }
  .article-body p { font-size: 15px; }
  .article-body h2 { font-size: 21px; }
  .article-body h3 { font-size: 18px; }
  .article-cover img { height: 180px; }
  .article-actions .btn { width: 100%; }
  .not-found { padding: 56px 24px; margin: 36px auto; }
  .not-found h2 { font-size: 21px; }
  .related-section { padding: 44px 0 48px; }
  .section-head h2 { font-size: 22px; }
  .cta-banner { padding: 52px 20px; }
  .cta-banner h2 { font-size: 23px; }
  .cta-banner p { font-size: 14px; }
  .footer-main { padding: 44px 0 28px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-desc { max-width: 100%; }
  .table-scroll { overflow-x: auto; }
}