/* roulang page: index */
/* ===== 设计变量 ===== */
:root {
  --primary: #0E9F8A;
  --primary-light: #2BC0A5;
  --primary-gradient: linear-gradient(135deg, #0E9F8A 0%, #2BC0A5 100%);
  --dark: #0C1D1A;
  --dark-gradient: linear-gradient(135deg, #0C1D1A 0%, #153A33 100%);
  --gold: #E8A33D;
  --bg: #F5F8F7;
  --card-bg: #FFFFFF;
  --text: #1F2A27;
  --text-secondary: #5A6B66;
  --border: #D8E2DF;
  --success: #2BB673;
  --warning: #E8A33D;
  --error: #D9534F;
  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --shadow-sm: 0 2px 8px rgba(12,29,26,.06);
  --shadow-md: 0 8px 24px rgba(12,29,26,.08);
  --shadow-lg: 0 16px 40px rgba(12,29,26,.12);
  --space-section: clamp(3rem, 8vw, 6.5rem);
  --container-pad: clamp(1rem, 4vw, 3rem);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
}

/* ===== Reset / Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, select, textarea { font-family: inherit; font-size: 1rem; }
ul, ol { list-style: none; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 46px;
  padding: 0 26px;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1;
  border: 1px solid transparent;
  transition: all .25s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover { box-shadow: var(--shadow-md); }
.btn-secondary {
  background: #fff;
  border-color: var(--border);
  color: var(--text);
}
.btn-secondary:hover { border-color: var(--primary); color: var(--primary); }
.btn-ghost {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn-ghost:hover { background: rgba(14,159,138,.08); box-shadow: none; }
.btn-lg { height: 52px; padding: 0 34px; font-size: 1rem; border-radius: 14px; }
.btn-gold {
  background: var(--gold);
  color: #fff;
  box-shadow: 0 4px 16px rgba(232,163,61,.35);
}
.btn-gold:hover { box-shadow: 0 8px 24px rgba(232,163,61,.4); }
.btn-block { width: 100%; }

/* ===== 标签 / 徽章 ===== */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: .02em;
  background: rgba(14,159,138,.1);
  color: var(--primary);
  white-space: nowrap;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}
.badge-dark {
  background: var(--dark);
  color: #fff;
}
.badge-dark .badge-num { color: var(--gold); font-weight: 700; margin-right: 2px; }
.badge-light {
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text);
}
.badge-light .badge-num { color: var(--primary); font-weight: 700; margin-right: 2px; }

/* ===== 板块基础 ===== */
.section { padding: var(--space-section) 0; }
.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}
.section-head .section-tag {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(14,159,138,.1);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
  letter-spacing: -.02em;
}
.section-head p {
  margin-top: 12px;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245,248,247,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.6);
  transition: box-shadow .3s;
}
.site-header.is-scrolled { box-shadow: var(--shadow-md); }
.brand-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand-icon {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dark-gradient);
  border-radius: 10px;
  color: var(--gold);
  font-size: 18px;
}
.brand-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -.01em;
}
.brand-text small {
  display: block;
  font-size: .6875rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: .08em;
  margin-top: 2px;
}
.brand-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-wrap {
  background: rgba(245,248,247,.6);
  padding: 0 0 12px;
}
.nav-tabs {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #E8F0ED;
  padding: 6px;
  border-radius: 999px;
  width: fit-content;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  transition: all .25s ease;
  white-space: nowrap;
}
.nav-tab:hover { background: #fff; color: var(--primary); box-shadow: var(--shadow-sm); transform: translateY(-1px); }
.nav-tab.active {
  background: var(--primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.nav-tab.active:hover { color: #fff; }

/* ===== Hero ===== */
.hero {
  position: relative;
  background: linear-gradient(135deg, rgba(12,29,26,.92) 0%, rgba(21,58,51,.85) 60%, rgba(14,159,138,.55) 100%), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  color: #fff;
  padding: clamp(4rem, 9vw, 7rem) 0;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}
.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 820px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: rgba(255,255,255,.1);
  border: 1px solid rgba(255,255,255,.2);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: #E8F1EE;
  margin-bottom: 24px;
}
.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 12px rgba(232,163,61,.7);
}
.hero h1 {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -.02em;
  margin-bottom: 20px;
  color: #fff;
}
.hero h1 span {
  background: linear-gradient(135deg, var(--gold) 0%, #F2C078 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-sub {
  font-size: clamp(1rem, 1.6vw, 1.1875rem);
  line-height: 1.8;
  color: rgba(255,255,255,.85);
  margin-bottom: 36px;
  max-width: 680px;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}
.hero-actions .btn-primary {
  box-shadow: 0 8px 28px rgba(14,159,138,.4);
}
.hero-actions .btn-ghost {
  border-color: rgba(255,255,255,.7);
  color: #fff;
}
.hero-actions .btn-ghost:hover { background: rgba(255,255,255,.12); }
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}
.hero-stats .badge {
  background: rgba(255,255,255,.08);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,.15);
  color: #fff;
}
.hero-stats .badge-num {
  color: var(--gold);
  font-weight: 700;
  margin-right: 4px;
  font-size: 1rem;
}

/* ===== 亮点区 ===== */
.highlights-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 24px;
}
.highlight-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(216,226,223,.5);
  transition: all .3s ease;
  position: relative;
  overflow: hidden;
}
.highlight-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  opacity: 0;
  transition: opacity .3s;
}
.highlight-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.highlight-card:hover::after { opacity: 1; }
.highlight-card.feature {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: linear-gradient(135deg, #fff 0%, #F0F9F6 100%);
}
.highlight-media {
  border-radius: var(--radius-md);
  overflow: hidden;
  height: 200px;
  object-fit: cover;
}
.highlight-card.feature .highlight-media { height: 240px; }
.highlight-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(14,159,138,.12);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 4px;
}
.highlight-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 8px;
}
.highlight-card p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  line-height: 1.7;
}
.highlight-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}
.stacked-cards {
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 24px;
}
.stacked-cards .highlight-card {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 24px 28px;
}
.stacked-cards .highlight-card .highlight-icon { flex-shrink: 0; margin: 0; }
.stacked-cards .highlight-card h3 { margin-bottom: 4px; font-size: 1.125rem; }
.stacked-cards .highlight-card p { font-size: 0.875rem; }

/* ===== 议程时间线 ===== */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 20px 0;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary) 0%, rgba(14,159,138,.2) 100%);
  transform: translateX(-50%);
  border-radius: 3px;
}
.timeline-item {
  position: relative;
  width: 50%;
  padding-left: 48px;
  padding-right: 48px;
  margin-bottom: 40px;
}
.timeline-item:nth-child(odd) {
  left: 0;
  padding-left: 0;
  padding-right: 48px;
  text-align: right;
}
.timeline-item:nth-child(even) {
  left: 50%;
  padding-left: 48px;
  padding-right: 0;
  text-align: left;
}
.timeline-dot {
  position: absolute;
  top: 24px;
  right: -9px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--primary);
  border: 3px solid #fff;
  box-shadow: 0 0 0 4px rgba(14,159,138,.2), 0 0 20px rgba(14,159,138,.35);
  z-index: 2;
}
.timeline-item:nth-child(odd) .timeline-dot { right: -9px; left: auto; }
.timeline-item:nth-child(even) .timeline-dot { left: -9px; right: auto; }
.timeline-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 24px 28px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(216,226,223,.5);
  transition: all .3s ease;
}
.timeline-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.timeline-time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--dark);
  color: var(--gold);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.timeline-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--dark);
  margin-bottom: 6px;
}
.timeline-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===== 票种对比 ===== */
.plan-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  background: #fff;
  border: 1px solid rgba(216,226,223,.6);
}
.plan-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}
.plan-table th,
.plan-table td {
  padding: 20px 24px;
  text-align: center;
  border-bottom: 1px solid #EEF3F1;
}
.plan-table th {
  background: #F8FAF9;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
}
.plan-table .plan-name {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--dark);
}
.plan-table .plan-price {
  font-size: 1.875rem;
  font-weight: 800;
  color: var(--primary);
}
.plan-table .plan-price small { font-size: 0.875rem; color: var(--text-secondary); font-weight: 400; }
.plan-table td { font-size: 0.9375rem; color: var(--text); }
.plan-table tr:last-child td { border-bottom: none; }
.plan-table .hot-col {
  background: rgba(14,159,138,.05);
  box-shadow: inset 0 0 0 2px var(--primary);
  border-radius: var(--radius-md);
  position: relative;
}
.plan-table .hot-col th {
  background: var(--dark);
  color: #fff;
  font-size: 1rem;
}
.plan-table .hot-col td { background: rgba(255,255,255,.4); }
.plan-tag {
  display: inline-block;
  background: var(--gold);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 999px;
  margin-bottom: 6px;
  letter-spacing: .05em;
}

/* ===== 资讯列表 ===== */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}
.news-card {
  display: flex;
  gap: 20px;
  background: #fff;
  border-radius: var(--radius-md);
  padding: 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(216,226,223,.5);
  transition: all .3s ease;
}
.news-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.news-thumb {
  flex: 0 0 140px;
  height: 100px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(14,159,138,.18) 0%, rgba(12,29,26,.1) 100%);
  position: relative;
  overflow: hidden;
}
.news-thumb::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(14,159,138,.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(14,159,138,.2) 1px, transparent 1px);
  background-size: 16px 16px;
  mask-image: linear-gradient(135deg, transparent 20%, #000 80%);
}
.news-thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-body { flex: 1; min-width: 0; }
.news-body .chip { margin-bottom: 8px; }
.news-body h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--dark);
  line-height: 1.5;
  margin-bottom: 6px;
}
.news-body h3 a:hover { color: var(--primary); }
.news-body p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body time {
  font-size: 0.75rem;
  color: #93A39E;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-body time::before {
  content: '🕒';
  font-size: 0.6875rem;
}

/* 空状态 */
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  border-radius: var(--radius-lg);
  border: 2px dashed var(--border);
  background: rgba(255,255,255,.6);
}
.empty-icon {
  font-size: 40px;
  color: var(--primary);
  opacity: .5;
  display: block;
  margin-bottom: 12px;
}
.empty-state p {
  color: var(--text-secondary);
  font-size: 1rem;
}

/* ===== CTA区 ===== */
.cta-section {
  padding: var(--space-section) 0 0;
}
.cta-box {
  background: var(--dark-gradient);
  border-radius: 32px;
  padding: clamp(28px, 5vw, 56px);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  position: relative;
  overflow: hidden;
}
.cta-box::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: rgba(14,159,138,.25);
  filter: blur(60px);
}
.cta-content {
  position: relative;
  z-index: 2;
  color: #fff;
}
.cta-content h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
  color: #fff;
}
.cta-content p {
  color: rgba(255,255,255,.8);
  margin-bottom: 28px;
  font-size: 1rem;
}
.cta-points {
  display: grid;
  gap: 14px;
  margin-bottom: 32px;
}
.cta-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: rgba(255,255,255,.9);
  font-size: 0.9375rem;
}
.cta-points li::before {
  content: '✓';
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(14,159,138,.3);
  color: var(--gold);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 3px;
}
.cta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.cta-badges .badge {
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.15);
  color: #fff;
}
.cta-badges .badge-num { color: var(--gold); font-weight: 700; }

/* 表单 */
.cta-form {
  background: #fff;
  border-radius: 24px;
  padding: 32px;
  position: relative;
  z-index: 2;
  box-shadow: 0 20px 50px rgba(0,0,0,.25);
}
.cta-form h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 24px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 6px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  height: 46px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0 14px;
  background: #FBFCFC;
  color: var(--text);
  font-size: 0.9375rem;
  transition: border-color .2s, box-shadow .2s;
}
.form-group textarea { height: 90px; padding: 12px 14px; resize: vertical; }
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14,159,138,.15);
}
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 18px;
}
.form-check input {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  margin-top: 5px;
}
.form-check label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ===== FAQ ===== */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: grid;
  gap: 16px;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0;
  overflow: hidden;
  transition: box-shadow .3s;
}
.faq-item.open { box-shadow: var(--shadow-md); }
.faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  background: none;
  border: none;
  width: 100%;
  text-align: left;
}
.faq-question:hover { color: var(--primary); }
.faq-arrow {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(14,159,138,.1);
  color: var(--primary);
  font-size: 0.8125rem;
  transition: transform .3s;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
  padding: 0 24px;
}
.faq-item.open .faq-answer {
  max-height: 240px;
  padding: 0 24px 20px;
}
.faq-answer p {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,.7);
  margin-top: var(--space-section);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer-brand .brand {
  margin-bottom: 16px;
}
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text small { color: rgba(255,255,255,.5); }
.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255,255,255,.6);
  max-width: 340px;
}
.footer-col h4 {
  font-size: 1rem;
  font-weight: 600;
  color: #fff;
  margin-bottom: 18px;
}
.footer-col li { margin-bottom: 10px; }
.footer-col a {
  font-size: 0.875rem;
  color: rgba(255,255,255,.65);
  transition: color .25s;
}
.footer-col a:hover { color: var(--gold); }
.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.875rem;
  color: rgba(255,255,255,.65);
  margin-bottom: 12px;
}
.footer-contact li span { color: var(--gold); flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: rgba(255,255,255,.5); }
.footer-bottom a:hover { color: var(--gold); }

/* ===== 响应式 ===== */
@media (max-width: 1023px) {
  .hero-stats { gap: 10px; }
  .highlights-grid { grid-template-columns: 1fr; }
  .stacked-cards { grid-template-rows: none; grid-template-columns: 1fr 1fr; }
  .timeline::before { left: 8px; transform: none; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) {
    width: 100%;
    left: 0;
    padding-left: 40px;
    padding-right: 0;
    text-align: left;
  }
  .timeline-item:nth-child(odd) .timeline-dot,
  .timeline-item:nth-child(even) .timeline-dot {
    left: -2px;
    right: auto;
  }
  .cta-box { grid-template-columns: 1fr; gap: 32px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 767px) {
  .brand-bar { padding: 12px 0; }
  .brand-text small { display: none; }
  .nav-wrap { padding-bottom: 8px; }
  .nav-tabs { width: 100%; border-radius: 16px; }
  .nav-tab { flex: 1; justify-content: center; padding: 10px 12px; font-size: 0.875rem; }
  .hero { padding: 3rem 0; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .hero-stats { flex-direction: column; align-items: flex-start; }
  .highlights-grid { gap: 16px; }
  .stacked-cards { grid-template-columns: 1fr; }
  .highlight-card,
  .stacked-cards .highlight-card {
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .highlight-card.feature .highlight-media { height: 180px; }
  .news-grid { grid-template-columns: 1fr; }
  .news-card { flex-direction: column; padding: 16px; }
  .news-thumb { flex: none; width: 100%; height: 140px; }
  .cta-box { border-radius: 24px; padding: 24px; }
  .cta-form { padding: 24px; }
  .form-group input, .form-group select { height: 44px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-bottom { font-size: 0.75rem; }
}

@media (max-width: 520px) {
  .brand-actions .btn { padding: 0 18px; height: 40px; font-size: 0.8125rem; }
  .timeline-item,
  .timeline-item:nth-child(odd),
  .timeline-item:nth-child(even) { padding-left: 36px; }
  .timeline-card { padding: 18px; }
  .section-head { margin-bottom: 32px; }
  .plan-table th, .plan-table td { padding: 14px 16px; }
}

/* roulang page: category1 */
:root {
  --primary: #0E9F8A;
  --primary-light: #2BC0A5;
  --primary-bg: #E8F0ED;
  --primary-grad: linear-gradient(135deg, #0E9F8A, #2BC0A5);
  --dark: #0C1D1A;
  --dark-grad: linear-gradient(135deg, #0C1D1A, #153A33);
  --dark-2: #153A33;
  --gold: #E8A33D;
  --page-bg: #F5F8F7;
  --card-bg: #FFFFFF;
  --text-main: #1F2A27;
  --text-sub: #5A6B66;
  --border: #D8E2DF;
  --success: #2BB673;
  --error: #D9534F;
  --round-lg: 28px;
  --round-md: 18px;
  --round-sm: 12px;
  --round-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(12,29,26,.06);
  --shadow-md: 0 8px 24px rgba(12,29,26,.08);
  --shadow-lg: 0 16px 40px rgba(12,29,26,.12);
  --container: 1280px;
  --gap-section: clamp(3rem, 8vw, 6.5rem);
}
*,
*::before,
*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--page-bg);
  color: var(--text-main);
  font-size: 1rem;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s ease; }
a:hover { color: var(--primary-light); }
button { font-family: inherit; cursor: pointer; }
.container { max-width: var(--container); margin: 0 auto; padding-left: clamp(1rem, 4vw, 3rem); padding-right: clamp(1rem, 4vw, 3rem); }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(245, 248, 247, 0.92); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(216, 226, 223, 0.5); }
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.brand-bar { display: flex; align-items: center; justify-content: space-between; padding: 14px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; color: var(--text-main); }
.brand:hover { color: var(--text-main); }
.brand-icon { display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 38px; border-radius: 12px; background: var(--primary-grad); color: #fff; flex-shrink: 0; }
.brand-text { font-size: 1.375rem; font-weight: 800; letter-spacing: .01em; line-height: 1.1; }
.brand-text small { display: block; font-size: .72rem; font-weight: 500; color: var(--text-sub); letter-spacing: .08em; margin-top: 2px; }
.brand-actions { display: flex; align-items: center; gap: 12px; }
.nav-wrap { border-top: 1px solid rgba(216, 226, 223, 0.5); }
.nav-tabs { display: flex; gap: 6px; padding: 8px 0; overflow-x: auto; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab { display: inline-flex; align-items: center; padding: 10px 20px; border-radius: var(--round-pill); font-size: .9375rem; font-weight: 500; color: var(--text-main); white-space: nowrap; background: transparent; border: 1px solid transparent; transition: background .2s ease, box-shadow .2s ease, color .2s ease; }
.nav-tab:hover { background: #fff; box-shadow: var(--shadow-sm); color: var(--text-main); }
.nav-tab.active { background: var(--primary); color: #fff; box-shadow: 0 4px 12px rgba(14, 159, 138, .28); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 44px; padding: 0 24px; border-radius: var(--round-sm); font-size: .9375rem; font-weight: 600; border: 1px solid transparent; transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease; white-space: nowrap; }
.btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-light); color: #fff; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(14, 159, 138, .3); }
.btn-primary:active { transform: translateY(0); box-shadow: none; }
.btn-ghost { background: transparent; border: 2px solid rgba(255, 255, 255, 0.8); color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.12); border-color: #fff; color: #fff; transform: translateY(-2px); }
.btn-dark { background: var(--dark); color: #fff; }
.btn-dark:hover { background: var(--dark-2); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow-md); }
.btn-gold { background: var(--gold); color: #0C1D1A; }
.btn-gold:hover { background: #F0B352; color: #0C1D1A; transform: translateY(-2px); box-shadow: 0 6px 16px rgba(232, 163, 61, .3); }
.hero { position: relative; background: var(--dark-grad); overflow: hidden; padding: clamp(3.5rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 4.5rem); }
.hero::before { content: ''; position: absolute; inset: 0; background-image: url('/assets/images/backpic/back-1.png'); background-size: cover; background-position: center; opacity: 0.4; }
.hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(12, 29, 26, 0.92) 0%, rgba(12, 29, 26, 0.68) 50%, rgba(12, 29, 26, 0.35) 100%); }
.hero .container { position: relative; z-index: 2; }
.hero-tag { display: inline-flex; align-items: center; gap: 8px; background: rgba(232, 163, 61, 0.16); border: 1px solid rgba(232, 163, 61, 0.4); color: var(--gold); padding: 6px 16px; border-radius: var(--round-pill); font-size: .8125rem; font-weight: 600; letter-spacing: .04em; margin-bottom: 20px; }
.hero h1 { font-size: clamp(2.25rem, 4.5vw, 3.5rem); font-weight: 800; line-height: 1.2; color: #fff; max-width: 640px; margin-bottom: 16px; letter-spacing: .01em; }
.hero-desc { font-size: 1.0625rem; line-height: 1.75; color: rgba(255, 255, 255, 0.85); max-width: 560px; margin-bottom: 28px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 40px; }
.hero-stats { display: flex; flex-wrap: wrap; gap: 16px; max-width: 720px; }
.stat-badge { display: inline-flex; align-items: center; gap: 10px; background: rgba(255, 255, 255, 0.08); border: 1px solid rgba(255, 255, 255, 0.12); padding: 12px 22px; border-radius: var(--round-pill); backdrop-filter: blur(4px); }
.stat-badge .stat-num { font-size: 1.375rem; font-weight: 800; color: var(--gold); line-height: 1.2; }
.stat-badge .stat-label { font-size: .8125rem; color: rgba(255, 255, 255, 0.8); line-height: 1.3; }
.pulse-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--primary-light); margin-right: 8px; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(43, 192, 165, .5); } 50% { box-shadow: 0 0 0 6px rgba(43, 192, 165, 0); } }
.section { padding: var(--gap-section) 0; }
.section-alt { background: #fff; }
.section-head { max-width: 760px; margin-bottom: 40px; }
.section-head .eyebrow { display: inline-block; font-size: .8125rem; font-weight: 700; letter-spacing: .1em; color: var(--primary); text-transform: uppercase; margin-bottom: 10px; }
.section-head h2 { font-size: clamp(1.5rem, 2.5vw, 2.25rem); font-weight: 700; line-height: 1.3; color: var(--text-main); margin-bottom: 12px; }
.section-head p { color: var(--text-sub); font-size: 1rem; line-height: 1.75; }
.capability-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.capability-card { grid-column: span 6; background: var(--card-bg); border-radius: var(--round-lg); padding: 32px; box-shadow: var(--shadow-sm); border: 1px solid rgba(216, 226, 223, 0.4); transition: transform .3s ease, box-shadow .3s ease; position: relative; overflow: hidden; }
.capability-card::after { content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: var(--primary-grad); opacity: 0; transition: opacity .3s ease; }
.capability-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.capability-card:hover::after { opacity: 1; }
.capability-card:first-child { grid-column: span 7; }
.capability-card:nth-child(2) { grid-column: span 5; }
.capability-card:nth-child(3) { grid-column: span 5; }
.capability-card:nth-child(4) { grid-column: span 7; }
.cap-icon { display: inline-flex; align-items: center; justify-content: center; width: 52px; height: 52px; border-radius: 16px; background: var(--primary-bg); color: var(--primary); margin-bottom: 18px; }
.capability-card h3 { font-size: 1.25rem; font-weight: 700; margin-bottom: 10px; color: var(--text-main); }
.capability-card p { color: var(--text-sub); font-size: .9375rem; line-height: 1.7; }
.cap-tag { display: inline-block; margin-top: 16px; background: var(--primary-bg); color: var(--primary); font-size: .75rem; font-weight: 600; padding: 4px 12px; border-radius: var(--round-pill); }
.process-section { background: var(--dark-grad); color: #fff; position: relative; overflow: hidden; }
.process-section::before { content: ''; position: absolute; top: -30%; right: -20%; width: 500px; height: 500px; background: radial-gradient(circle, rgba(14, 159, 138, 0.15), transparent 60%); }
.process-section .section-head h2 { color: #fff; }
.process-section .section-head p { color: rgba(255, 255, 255, 0.7); }
.timeline { position: relative; padding-left: 40px; max-width: 860px; margin: 0 auto; }
.timeline::before { content: ''; position: absolute; left: 14px; top: 0; bottom: 0; width: 2px; background: rgba(255, 255, 255, 0.15); }
.timeline-item { position: relative; padding-bottom: 36px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-node { position: absolute; left: -40px; top: 2px; width: 30px; height: 30px; border-radius: 50%; background: var(--primary); border: 3px solid rgba(255, 255, 255, 0.3); display: flex; align-items: center; justify-content: center; z-index: 1; }
.timeline-node.is-gold { background: var(--gold); }
.timeline-node span { color: #fff; font-size: .75rem; font-weight: 700; }
.timeline-card { background: rgba(255, 255, 255, 0.06); border: 1px solid rgba(255, 255, 255, 0.1); border-radius: var(--round-md); padding: 22px 26px; transition: background .2s ease, border-color .2s ease; }
.timeline-card:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(232, 163, 61, 0.4); }
.timeline-card h3 { font-size: 1.0625rem; font-weight: 700; margin-bottom: 6px; color: #fff; }
.timeline-card p { font-size: .875rem; color: rgba(255, 255, 255, 0.7); line-height: 1.65; }
.product-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.product-card { grid-column: span 3; background: var(--card-bg); border-radius: var(--round-lg); overflow: hidden; box-shadow: var(--shadow-sm); border: 1px solid rgba(216, 226, 223, 0.3); transition: transform .3s ease, box-shadow .3s ease; display: flex; flex-direction: column; }
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
.product-card .cover { aspect-ratio: 16/10; overflow: hidden; background: var(--primary-bg); }
.product-card .cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s ease; }
.product-card:hover .cover img { transform: scale(1.04); }
.product-card .body { padding: 22px 24px; flex: 1; display: flex; flex-direction: column; }
.product-card .body h3 { font-size: 1.125rem; font-weight: 700; margin-bottom: 8px; color: var(--text-main); }
.product-card .body p { color: var(--text-sub); font-size: .875rem; line-height: 1.65; flex: 1; }
.product-card .card-link { display: inline-flex; align-items: center; gap: 6px; margin-top: 16px; font-size: .875rem; font-weight: 600; color: var(--primary); }
.product-card .card-link:hover { color: var(--primary-light); }
.scenario-grid { display: grid; grid-template-columns: repeat(12, 1fr); gap: 24px; }
.scenario-card { grid-column: span 4; background: var(--card-bg); border-radius: var(--round-md); padding: 26px; box-shadow: var(--shadow-sm); border: 1px solid rgba(216, 226, 223, 0.3); transition: transform .3s ease, box-shadow .3s ease; position: relative; }
.scenario-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.scenario-card .sc-num { font-size: 1.5rem; font-weight: 800; color: var(--primary); opacity: .35; position: absolute; top: 18px; right: 22px; }
.scenario-card h3 { font-size: 1.0625rem; font-weight: 700; margin-bottom: 10px; color: var(--text-main); }
.scenario-card p { color: var(--text-sub); font-size: .875rem; line-height: 1.7; }
.scenario-card .sc-tag { display: inline-block; margin-top: 14px; font-size: .75rem; font-weight: 600; color: var(--gold); background: rgba(232, 163, 61, 0.1); padding: 4px 12px; border-radius: var(--round-pill); }
.faq-wrap { max-width: 860px; margin: 0 auto; }
.faq-item { background: var(--card-bg); border: 1px solid rgba(216, 226, 223, 0.5); border-radius: var(--round-md); margin-bottom: 14px; overflow: hidden; box-shadow: var(--shadow-sm); transition: box-shadow .2s ease; }
.faq-item:hover { box-shadow: var(--shadow-md); }
.faq-item details > summary { list-style: none; display: flex; align-items: center; justify-content: space-between; padding: 20px 24px; cursor: pointer; font-size: 1rem; font-weight: 600; color: var(--text-main); transition: background .2s ease; }
.faq-item details > summary::-webkit-details-marker { display: none; }
.faq-item details > summary .faq-arrow { display: inline-flex; align-items: center; justify-content: center; width: 28px; height: 28px; border-radius: 50%; background: var(--primary-bg); color: var(--primary); font-size: .875rem; transition: transform .3s ease, background .3s ease, color .3s ease; flex-shrink: 0; }
.faq-item details[open] > summary { background: var(--primary-bg); }
.faq-item details[open] > summary .faq-arrow { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-item .faq-answer { padding: 4px 24px 22px; font-size: .9375rem; line-height: 1.75; color: var(--text-sub); }
.cta-section { padding: var(--gap-section) 0; }
.cta-panel { background: var(--dark-grad); border-radius: 32px; padding: clamp(2rem, 5vw, 3.5rem); display: grid; grid-template-columns: 1.1fr 1fr; gap: 32px; align-items: center; position: relative; overflow: hidden; }
.cta-panel::before { content: ''; position: absolute; bottom: -50%; right: -20%; width: 400px; height: 400px; background: radial-gradient(circle, rgba(232, 163, 61, 0.12), transparent 60%); }
.cta-panel .cta-left, .cta-panel .cta-right { position: relative; z-index: 1; }
.cta-panel h2 { font-size: clamp(1.5rem, 2.5vw, 2rem); font-weight: 700; color: #fff; margin-bottom: 12px; line-height: 1.3; }
.cta-panel .cta-desc { color: rgba(255, 255, 255, 0.8); margin-bottom: 24px; font-size: 1rem; max-width: 440px; }
.cta-points { list-style: none; margin-bottom: 24px; }
.cta-points li { position: relative; padding-left: 28px; color: rgba(255, 255, 255, 0.85); font-size: .9375rem; margin-bottom: 10px; }
.cta-points li::before { content: '✓'; position: absolute; left: 0; top: 0; color: var(--gold); font-weight: 700; }
.cta-stats { display: flex; flex-wrap: wrap; gap: 20px; }
.cta-stats .stat-item { text-align: center; background: rgba(255, 255, 255, 0.08); border-radius: var(--round-md); padding: 16px 20px; min-width: 100px; }
.cta-stats .stat-item .num { font-size: 1.25rem; font-weight: 800; color: var(--gold); }
.cta-stats .stat-item .label { font-size: .75rem; color: rgba(255, 255, 255, 0.6); margin-top: 2px; }
.cta-form { background: #fff; border-radius: var(--round-lg); padding: 28px; box-shadow: var(--shadow-lg); }
.cta-form .form-title { font-size: 1.125rem; font-weight: 700; color: var(--text-main); margin-bottom: 18px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: .8125rem; font-weight: 600; color: var(--text-main); }
.form-group input, .form-group select, .form-group textarea { height: 46px; border: 1px solid var(--border); border-radius: var(--round-sm); padding: 0 14px; font-size: .875rem; font-family: inherit; background: #FBFCFC; color: var(--text-main); transition: border-color .2s ease, box-shadow .2s ease; }
.form-group textarea { height: auto; padding: 12px 14px; resize: vertical; min-height: 80px; }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(14, 159, 138, 0.15); }
.form-group .hint { font-size: .75rem; color: var(--text-sub); }
.cta-form .btn { width: 100%; margin-top: 16px; }
.site-footer { background: var(--dark); color: rgba(255, 255, 255, 0.75); padding-top: 60px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.2fr; gap: 40px; padding-bottom: 40px; }
.footer-brand .brand { color: #fff; margin-bottom: 16px; }
.footer-brand .brand .brand-text small { color: rgba(255, 255, 255, 0.5); }
.footer-brand p { font-size: .875rem; line-height: 1.7; color: rgba(255, 255, 255, 0.6); max-width: 340px; margin-top: 12px; }
.footer-col h4 { font-size: .9375rem; font-weight: 700; color: #fff; margin-bottom: 18px; }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul a { color: rgba(255, 255, 255, 0.65); font-size: .875rem; transition: color .2s ease; }
.footer-col ul a:hover { color: var(--gold); }
.footer-contact li { display: flex; align-items: center; gap: 10px; font-size: .875rem; color: rgba(255, 255, 255, 0.65); }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.1); padding: 20px 0; text-align: center; }
.footer-bottom p { font-size: .8125rem; color: rgba(255, 255, 255, 0.4); }
.footer-bottom a { color: rgba(255, 255, 255, 0.5); }
.footer-bottom a:hover { color: var(--gold); }
@media (max-width: 1023px) {
  .capability-card,
  .capability-card:first-child,
  .capability-card:nth-child(2),
  .capability-card:nth-child(3),
  .capability-card:nth-child(4) { grid-column: span 6; }
  .product-card { grid-column: span 6; }
  .scenario-card { grid-column: span 6; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 767px) {
  .nav-wrap { border-top: none; }
  .nav-tabs { padding: 8px 0 10px; gap: 4px; }
  .brand-text { font-size: 1.125rem; }
  .brand-text small { display: none; }
  .brand-actions .btn { height: 38px; padding: 0 16px; font-size: .8125rem; }
  .hero { padding: 3rem 0 2.5rem; }
  .hero h1 { font-size: 2rem; }
  .hero-stats { gap: 10px; }
  .stat-badge { padding: 10px 16px; }
  .stat-badge .stat-num { font-size: 1.125rem; }
  .capability-card, .capability-card:first-child, .capability-card:nth-child(2), .capability-card:nth-child(3), .capability-card:nth-child(4), .product-card, .scenario-card { grid-column: 1 / -1; }
  .timeline { padding-left: 28px; }
  .timeline::before { left: 10px; }
  .timeline-node { left: -28px; width: 22px; height: 22px; border-width: 2px; }
  .timeline-node span { font-size: .625rem; }
  .cta-panel { grid-template-columns: 1fr; padding: 2rem 1.5rem; border-radius: 24px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .btn { height: 44px; }
}
@media (max-width: 520px) {
  .brand-text { font-size: 1rem; }
  .brand-icon { width: 32px; height: 32px; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .capability-card { padding: 22px; }
  .product-card .body { padding: 18px; }
  .cta-form { padding: 20px; }
}

/* roulang page: article */
:root {
  --primary: #0E9F8A;
  --primary-light: #2BC0A5;
  --primary-bg: #E8F0ED;
  --dark: #0C1D1A;
  --dark-2: #153A33;
  --gold: #E8A33D;
  --bg: #F5F8F7;
  --card: #FFFFFF;
  --text: #1F2A27;
  --text-2: #5A6B66;
  --border: #D8E2DF;
  --radius-lg: 28px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(12,29,26,.06);
  --shadow-md: 0 8px 24px rgba(12,29,26,.08);
  --shadow-lg: 0 16px 40px rgba(12,29,26,.12);
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  --container: 1280px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--primary); }
button, input, select, textarea { font-family: inherit; }
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(1rem, 4vw, 3rem);
}
.section { padding: clamp(3rem, 8vw, 5.5rem) 0; }
.section-head {
  margin-bottom: 2.5rem;
  max-width: 720px;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  color: var(--text);
}
.section-head p {
  color: var(--text-2);
  font-size: 1rem;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 44px;
  padding: 0 24px;
  border-radius: 12px;
  font-size: .9375rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s, background .2s, border-color .2s;
  white-space: nowrap;
}
.btn:focus-visible, a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  box-shadow: 0 6px 18px rgba(14,159,138,.26);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(14,159,138,.32);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
.btn-outline {
  background: #fff;
  border-color: var(--border);
  color: var(--text);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.btn-gold {
  background: linear-gradient(135deg, var(--gold), #F2B65A);
  color: #fff;
  box-shadow: 0 8px 20px rgba(232,163,61,.3);
}
.btn-gold:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(232,163,61,.38); color: #fff; }
.btn-outline-light {
  background: transparent;
  border: 2px solid rgba(255,255,255,.6);
  color: #fff;
}
.btn-outline-light:hover { background: rgba(255,255,255,.12); border-color: #fff; color: #fff; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245,248,247,.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(216,226,223,.7);
  box-shadow: 0 1px 0 rgba(12,29,26,.03);
}
.site-header.scrolled { box-shadow: var(--shadow-sm); }
.brand-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}
.brand { display: inline-flex; align-items: center; gap: 12px; }
.brand-icon {
  width: 46px;
  height: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-radius: 14px;
  flex-shrink: 0;
  box-shadow: 0 6px 16px rgba(14,159,138,.28);
}
.brand-text {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: .01em;
  color: var(--text);
  line-height: 1.3;
  display: flex;
  flex-direction: column;
}
.brand-text small {
  font-size: .72rem;
  font-weight: 500;
  color: var(--text-2);
  letter-spacing: .08em;
}
.brand-actions .btn { margin-left: 12px; }
.nav-wrap {
  border-top: 1px solid rgba(216,226,223,.5);
  padding: 8px 0;
  overflow-x: auto;
}
.nav-tabs {
  display: flex;
  gap: 4px;
  background: var(--primary-bg);
  padding: 5px;
  border-radius: 999px;
  width: fit-content;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  padding: 9px 20px;
  border-radius: 999px;
  font-size: .9375rem;
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
  transition: background .25s, box-shadow .25s, color .25s, transform .2s;
}
.nav-tab:hover { background: #fff; color: var(--primary); box-shadow: var(--shadow-sm); }
.nav-tab.active { background: var(--primary); color: #fff; font-weight: 600; }
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  background: var(--primary-bg);
  color: var(--primary);
}
.chip-primary {
  background: rgba(14,159,138,.12);
  color: var(--primary);
}
.breadcrumb-wrap {
  background: linear-gradient(180deg, #EDF4F1, transparent);
  border-bottom: 1px solid rgba(216,226,223,.5);
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: .875rem;
  color: var(--text-2);
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-2); transition: color .2s; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .sep { color: #B7C6C1; }
.breadcrumb .current { color: var(--text); font-weight: 600; }
.article-wrap {
  padding: clamp(2rem, 6vw, 4rem) 0;
}
.article-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: clamp(1.5rem, 5vw, 3.5rem);
  max-width: 960px;
  margin: 0 auto;
}
.article-head {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
  margin-bottom: 2rem;
}
.article-head h1 {
  font-size: clamp(1.6rem, 3.2vw, 2.5rem);
  font-weight: 800;
  line-height: 1.3;
  color: var(--text);
  margin-bottom: 1rem;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: .875rem;
  color: var(--text-2);
}
.meta-item { display: inline-flex; align-items: center; gap: 6px; }
.article-content {
  max-width: 820px;
  margin: 0 auto;
  font-size: 1.0625rem;
  line-height: 1.9;
  color: #26332F;
}
.article-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.2rem 0 1rem;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
  line-height: 1.35;
}
.article-content h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 1.8rem 0 .8rem;
  color: var(--text);
}
.article-content p { margin-bottom: 1.25rem; }
.article-content ul, .article-content ol {
  margin: 0 0 1.5rem 1.25rem;
}
.article-content li { margin-bottom: .5rem; }
.article-content blockquote {
  border-left: 4px solid var(--primary);
  background: var(--primary-bg);
  padding: 1rem 1.5rem;
  border-radius: 0 12px 12px 0;
  color: var(--text-2);
  margin: 1.5rem 0;
  font-size: 1rem;
}
.article-content img {
  border-radius: 16px;
  margin: 1.5rem 0;
  width: 100%;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  border-radius: 12px;
  overflow: hidden;
}
.article-content th, .article-content td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  text-align: left;
  font-size: .9375rem;
}
.article-content th {
  background: var(--primary-bg);
  font-weight: 700;
}
.article-content code {
  background: var(--primary-bg);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: .9em;
  color: var(--primary);
}
.article-content pre {
  background: var(--dark);
  color: #D8E8E3;
  padding: 1.25rem 1.5rem;
  border-radius: 14px;
  overflow-x: auto;
  margin: 1.5rem 0;
}
.article-content pre code {
  background: transparent;
  color: inherit;
  padding: 0;
}
.article-content figure {
  margin: 1.5rem 0;
}
.article-content figcaption {
  text-align: center;
  font-size: .8125rem;
  color: var(--text-2);
  margin-top: .5rem;
}
.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 2.25rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}
.tag {
  display: inline-block;
  padding: 5px 14px;
  background: var(--primary-bg);
  color: var(--text-2);
  border-radius: 999px;
  font-size: .8125rem;
  font-weight: 500;
  border: 1px solid transparent;
  transition: all .2s;
}
.tag:hover { border-color: var(--primary); color: var(--primary); }
.article-actions {
  margin-top: 1.5rem;
  display: flex;
  justify-content: flex-end;
}
.not-found {
  max-width: 720px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: clamp(2rem, 6vw, 4rem);
  text-align: center;
}
.not-found h1 { font-size: 1.6rem; font-weight: 800; margin-bottom: 1rem; }
.not-found p { color: var(--text-2); margin-bottom: 1.5rem; }
.related-section {
  background: linear-gradient(180deg, var(--bg), #EDF4F1);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}
.related-card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .25s, box-shadow .25s;
}
.related-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.related-img {
  display: block;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #DCEAE6, #C2DCD4);
}
.related-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.related-card:hover .related-img img { transform: scale(1.05); }
.related-info {
  display: flex;
  flex-direction: column;
  padding: 18px 20px 22px;
  gap: 10px;
}
.related-title {
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text);
}
.related-meta {
  font-size: .8125rem;
  color: var(--text-2);
}
.related-meta .arrow { color: var(--primary); font-weight: 700; }
.cta-inner {
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(12,29,26,.95), rgba(21,58,51,.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  padding: clamp(2rem, 6vw, 4rem);
  color: #fff;
  display: flex;
}
.cta-content { max-width: 640px; }
.cta-content h2 {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  font-weight: 800;
  margin-bottom: 1rem;
  color: #fff;
}
.cta-content p { color: rgba(255,255,255,.85); margin-bottom: 2rem; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 14px; }
.site-footer {
  background: var(--dark);
  color: #B9C8C3;
  font-size: .9375rem;
}
.site-footer .container { padding-top: 3rem; padding-bottom: 1.25rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}
.footer-brand .brand { margin-bottom: 1rem; }
.footer-brand .brand-text { color: #fff; }
.footer-brand .brand-text small { color: #8FA39C; }
.footer-brand p { font-size: .9375rem; line-height: 1.8; max-width: 300px; }
.footer-col h4 {
  font-size: .8125rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: .06em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: .6rem; }
.footer-col a { color: #B9C8C3; transition: color .2s; }
.footer-col a:hover { color: #fff; }
.footer-contact li { display: flex; align-items: flex-start; gap: 8px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,.08);
  padding: 1.1rem 0;
  font-size: .8125rem;
  color: #8FA39C;
}
.footer-bottom .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 0;
  padding-bottom: 0;
}
.footer-bottom a { color: #8FA39C; }
.footer-bottom a:hover { color: #fff; }
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .cta-inner { flex-direction: column; }
}
@media (max-width: 767px) {
  .brand-text small { display: none; }
  .nav-wrap { padding: 8px 0; }
  .nav-tabs { width: auto; }
  .article-card { padding: 1.25rem; border-radius: 18px; }
  .article-content { font-size: 1rem; }
  .article-content table { display: block; overflow-x: auto; white-space: nowrap; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-actions { flex-direction: column; }
  .cta-actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom .container { flex-direction: column; text-align: center; }
  .article-actions { justify-content: center; }
}

/* roulang page: category2 */
:root {
  --primary: #0E9F8A;
  --primary-deep: #0C7F6E;
  --primary-light: #E6F5F2;
  --dark: #0C1D1A;
  --dark-2: #153A33;
  --accent: #E8A33D;
  --bg: #F5F8F7;
  --card-bg: #FFFFFF;
  --text: #1F2A27;
  --text-sub: #5A6B66;
  --border: #D8E2DF;
  --success: #2BB673;
  --error: #D9534F;
  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --shadow-sm: 0 2px 8px rgba(12,29,26,.06);
  --shadow-md: 0 8px 24px rgba(12,29,26,.08);
  --shadow-lg: 0 16px 40px rgba(12,29,26,.12);
  --gradient: linear-gradient(135deg,#0E9F8A,#2BC0A5);
  --gradient-dark: linear-gradient(135deg,#0C1D1A,#153A33);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:all .25s ease}
ul,ol{list-style:none}
button{font-family:inherit;cursor:pointer}
.container{max-width:1280px;margin:0 auto;padding-left:clamp(1rem,4vw,3rem);padding-right:clamp(1rem,4vw,3rem)}
.section{padding:clamp(3rem,8vw,6.5rem) 0;position:relative}
.section-head{max-width:760px;margin:0 auto clamp(2rem,4vw,3.5rem);text-align:center}
.section-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:600;letter-spacing:.08em;
  color:var(--primary);background:var(--primary-light);
  padding:6px 16px;border-radius:999px;margin-bottom:14px;
}
.section-title{
  font-size:clamp(1.5rem,2.5vw,2.25rem);
  font-weight:700;line-height:1.3;color:var(--dark);
}
.section-desc{margin-top:14px;color:var(--text-sub);font-size:1rem}
.section-title.center,.section-desc.center{text-align:center}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:12px;
  font-size:.9375rem;font-weight:600;line-height:1;
  border:1px solid transparent;white-space:nowrap;
  transition:all .25s ease;
}
.btn:focus-visible{outline:2px solid var(--primary);outline-offset:3px}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 14px rgba(14,159,138,.28)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(14,159,138,.35)}
.btn-primary:active{transform:translateY(0);box-shadow:0 2px 8px rgba(14,159,138,.2)}
.btn-outline{background:transparent;border-color:#c9d8d3;color:var(--text)}
.btn-outline:hover{border-color:var(--primary);color:var(--primary);background:rgba(14,159,138,.04)}
.btn-light{background:#fff;color:var(--dark);box-shadow:0 4px 14px rgba(0,0,0,.12)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.15)}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 4px 14px rgba(232,163,61,.3)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 8px 24px rgba(232,163,61,.4)}
.btn-sm{height:42px;padding:0 18px;font-size:.875rem}

/* 徽章/标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:.8125rem;font-weight:500;padding:6px 14px;
  border-radius:999px;background:var(--primary-light);color:var(--primary);
}
.badge-dark{background:var(--dark);color:#fff}
.badge-dark b{color:var(--accent);font-weight:700}
.badge-gold{background:rgba(232,163,61,.14);color:#B5740F}
.data-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:10px 20px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  color:#EAF4F1;font-size:.875rem;
}
.data-badge b{font-size:1.25rem;color:var(--accent);font-weight:800}
.data-badge.ghost{background:#fff;border:1px solid var(--border);color:var(--text)}
.data-badge.ghost b{color:var(--primary)}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(245,248,247,.93);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid rgba(12,29,26,.05);
  transition:box-shadow .3s ease;
}
.site-header.scrolled{box-shadow:0 4px 20px rgba(12,29,26,.08)}
.brand-bar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 0 10px;gap:16px;
}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0}
.brand-icon{
  display:grid;place-items:center;flex-shrink:0;
  width:44px;height:44px;border-radius:14px;
  background:var(--gradient);color:#fff;
  box-shadow:0 4px 12px rgba(14,159,138,.35);
  transition:transform .25s ease;
}
.brand:hover .brand-icon{transform:scale(1.05)}
.brand-text{
  font-size:1.25rem;font-weight:800;line-height:1.15;
  color:var(--dark);letter-spacing:.02em;white-space:nowrap;
}
.brand-text small{
  display:block;font-size:.75rem;font-weight:500;
  color:var(--text-sub);letter-spacing:.06em;margin-top:2px;
}
.brand-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-wrap{padding-bottom:14px;text-align:center}
.nav-tabs{
  display:inline-flex;gap:4px;padding:6px;
  background:#E8F0ED;border-radius:999px;
  max-width:100%;overflow-x:auto;scrollbar-width:none;
}
.nav-tabs::-webkit-scrollbar{display:none}
.nav-tab{
  display:inline-flex;align-items:center;justify-content:center;
  padding:9px 22px;border-radius:999px;
  font-size:.9375rem;font-weight:500;color:var(--text);
  white-space:nowrap;transition:all .25s ease;
}
.nav-tab:hover{background:#fff;color:var(--primary);transform:translateY(-1px)}
.nav-tab.active{background:var(--primary);color:#fff;font-weight:600;box-shadow:0 2px 8px rgba(14,159,138,.32)}
.nav-tab:focus-visible{outline:2px solid var(--primary);outline-offset:2px}

/* Hero */
.cat-hero{
  position:relative;overflow:hidden;
  background:
    linear-gradient(135deg,rgba(12,29,26,.94),rgba(21,58,51,.86)),
    url('/assets/images/backpic/back-2.png') center/cover no-repeat;
  color:#fff;padding:clamp(3rem,7vw,5.5rem) 0;
}
.cat-hero::before{
  content:'';position:absolute;right:-160px;top:-100px;
  width:480px;height:480px;border-radius:50%;
  background:radial-gradient(circle,rgba(14,159,138,.28),transparent 65%);
  pointer-events:none;
}
.cat-hero::after{
  content:'';position:absolute;left:6%;bottom:-70px;
  width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(232,163,61,.15),transparent 60%);
  pointer-events:none;
}
.cat-hero .container{position:relative;z-index:2}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:.8125rem;color:rgba(255,255,255,.7);margin-bottom:22px;
}
.breadcrumb a:hover{color:#fff}
.breadcrumb span{opacity:.6}
.cat-hero-content{max-width:820px}
.cat-hero .hero-chip{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.8125rem;font-weight:600;letter-spacing:.06em;
  padding:7px 16px;border-radius:999px;
  background:rgba(232,163,61,.18);color:#F5C77E;
  border:1px solid rgba(232,163,61,.3);margin-bottom:18px;
}
.cat-hero h1{
  font-size:clamp(2rem,4vw,3.25rem);
  font-weight:800;line-height:1.2;letter-spacing:.01em;
}
.cat-hero .lead{
  margin-top:16px;font-size:clamp(1rem,1.4vw,1.125rem);
  color:rgba(255,255,255,.88);line-height:1.8;max-width:680px;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:32px}
.hero-stats{
  display:flex;flex-wrap:wrap;gap:12px;margin-top:38px;
  padding-top:26px;border-top:1px solid rgba(255,255,255,.14);
}
.data-badge b{font-size:1.125rem;margin-right:2px}

/* 通用卡片 */
.card{
  background:var(--card-bg);border-radius:var(--radius-md);
  box-shadow:var(--shadow-sm);border:1px solid rgba(12,29,26,.04);
  transition:all .3s ease;overflow:hidden;
}
.card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);
  border-color:rgba(14,159,138,.2);
}

/* 方案亮点 */
.feature-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));
  gap:24px;
}
.feature-card{
  padding:30px 28px;border-radius:var(--radius-md);
  background:#fff;box-shadow:var(--shadow-sm);
  border-top:3px solid transparent;
  transition:all .3s ease;position:relative;overflow:hidden;
}
.feature-card::after{
  content:'';position:absolute;right:-40px;top:-40px;
  width:120px;height:120px;border-radius:50%;
  background:var(--primary-light);opacity:.6;transition:all .3s ease;
}
.feature-card:hover{
  transform:translateY(-4px);box-shadow:var(--shadow-lg);
  border-top-color:var(--primary);
}
.feature-icon{
  width:56px;height:56px;border-radius:16px;
  background:var(--gradient);color:#fff;
  display:grid;place-items:center;margin-bottom:18px;
  box-shadow:0 6px 16px rgba(14,159,138,.3);
}
.feature-card h3{font-size:1.125rem;font-weight:700;margin-bottom:10px;color:var(--dark)}
.feature-card p{font-size:.9375rem;color:var(--text-sub);line-height:1.7}
.feature-card .feature-tag{
  display:inline-block;margin-top:14px;font-size:.8125rem;
  color:var(--primary);font-weight:600;
}

/* 核心方案 */
.solution-grid{
  display:grid;grid-template-columns:repeat(2,1fr);gap:26px;
}
.solution-card{border-radius:var(--radius-lg);overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);transition:all .3s ease;display:flex;flex-direction:column}
.solution-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-lg);border-color:rgba(14,159,138,.25)}
.solution-cover{
  position:relative;aspect-ratio:16/9;overflow:hidden;
  background:linear-gradient(135deg,#d9edE8,#c4e2db);
}
.solution-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.solution-card:hover .solution-cover img{transform:scale(1.04)}
.solution-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(12,29,26,.35),transparent 55%);
}
.solution-cover .badge{
  position:absolute;left:16px;top:16px;z-index:2;
  background:rgba(255,255,255,.92);color:var(--primary);
}
.solution-body{padding:26px 26px 28px;display:flex;flex-direction:column;flex:1}
.solution-body h3{font-size:1.2rem;font-weight:700;margin-bottom:10px;color:var(--dark)}
.solution-body p{font-size:.9375rem;color:var(--text-sub);line-height:1.7;flex:1}
.solution-meta{
  display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;padding-top:16px;
  border-top:1px solid #EEF3F1;
}
.solution-meta .badge{font-size:.75rem;padding:4px 12px}
.solution-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:16px;
  font-size:.875rem;font-weight:600;color:var(--primary);
}
.solution-link:hover{gap:10px}

/* 方案对比 */
.compare-wrap{
  background:var(--gradient-dark);border-radius:var(--radius-lg);
  padding:clamp(2rem,5vw,4rem);color:#fff;
  position:relative;overflow:hidden;
}
.compare-wrap::before{
  content:'';position:absolute;right:-80px;top:-80px;
  width:260px;height:260px;border-radius:50%;
  background:rgba(14,159,138,.2);
}
.table-scroll{overflow-x:auto;position:relative;z-index:2}
.compare-table{
  width:100%;min-width:760px;border-collapse:separate;border-spacing:0;
  background:rgba(255,255,255,.97);border-radius:20px;overflow:hidden;
  box-shadow:0 8px 30px rgba(0,0,0,.18);
}
.compare-table th,.compare-table td{
  padding:17px 20px;text-align:center;font-size:.9375rem;
  border-bottom:1px solid #EEF3F1;color:var(--text);
}
.compare-table th{
  background:var(--dark);color:#fff;font-weight:600;font-size:1rem;
}
.compare-table th .sub{display:block;font-size:.75rem;font-weight:400;color:rgba(255,255,255,.65);margin-top:4px}
.compare-table .featured{
  background:rgba(232,163,61,.08);
  border-left:3px solid var(--accent);border-right:3px solid var(--accent);
}
.compare-table th.featured{
  background:var(--dark-2);border-left:3px solid var(--accent);border-right:3px solid var(--accent);
}
.compare-table td{font-size:.875rem}
.compare-table td.check{color:var(--success);font-weight:700;font-size:1.05rem}
.compare-table td.optional{color:var(--text-sub)}
.compare-table tr:last-child td{border-bottom:none}
.recommend-tag{
  display:inline-block;background:var(--accent);color:#fff;
  font-size:.6875rem;font-weight:700;letter-spacing:.08em;
  padding:3px 10px;border-radius:999px;margin-bottom:6px;
}
.compare-cta{display:inline-flex;flex-wrap:wrap;gap:10px;justify-content:center}
.compare-cta .btn-sm{min-width:110px}
.table-note{margin-top:16px;font-size:.8125rem;color:rgba(255,255,255,.65);position:relative;z-index:2}

/* 客户案例 */
.case-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px}
.case-card{
  display:flex;flex-direction:column;background:#fff;border-radius:var(--radius-lg);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:all .3s ease;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.case-cover{position:relative;aspect-ratio:16/9;overflow:hidden}
.case-cover img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.case-card:hover .case-cover img{transform:scale(1.04)}
.case-cover::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(12,29,26,.4),transparent 50%);
}
.case-industry{
  position:absolute;left:16px;bottom:14px;z-index:2;
  color:#fff;font-size:.8125rem;font-weight:600;
  background:rgba(12,29,26,.55);padding:5px 14px;border-radius:999px;
  backdrop-filter:blur(4px);
}
.case-body{padding:24px 26px 28px}
.case-body h3{font-size:1.125rem;font-weight:700;margin-bottom:12px;color:var(--dark)}
.case-body p{font-size:.9375rem;color:var(--text-sub);line-height:1.75;margin-bottom:16px}
.case-result{
  display:flex;flex-wrap:wrap;gap:10px;
}
.case-result .data-badge.ghost{padding:6px 14px;font-size:.8125rem}
.case-result .data-badge.ghost b{font-size:.9375rem}

/* 实施流程 */
.process{background:linear-gradient(180deg,var(--bg),#EAF3F0)}
.process-list{
  max-width:760px;margin:0 auto;position:relative;
  padding-left:12px;
}
.process-list::before{
  content:'';position:absolute;left:31px;top:8px;bottom:8px;
  width:2px;background:linear-gradient(to bottom,var(--primary),rgba(14,159,138,.15));
}
.process-item{
  position:relative;padding:0 0 34px 86px;
}
.process-item:last-child{padding-bottom:0}
.process-item::before{
  content:attr(data-step);
  position:absolute;left:0;top:0;width:62px;height:62px;
  border-radius:50%;background:var(--gradient);color:#fff;
  display:grid;place-items:center;font-weight:800;font-size:1rem;
  box-shadow:0 6px 18px rgba(14,159,138,.3);
  z-index:2;
}
.process-item .step-card{
  background:#fff;border-radius:var(--radius-md);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  transition:all .3s ease;border-left:3px solid transparent;
}
.process-item .step-card:hover{
  box-shadow:var(--shadow-md);border-left-color:var(--primary);
  transform:translateX(4px);
}
.process-item h3{font-size:1.0625rem;font-weight:700;margin-bottom:6px;color:var(--dark)}
.process-item p{font-size:.875rem;color:var(--text-sub);line-height:1.7}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:14px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:16px;
  overflow:hidden;transition:all .3s ease;
}
.faq-item[open]{
  border-color:rgba(14,159,138,.5);
  box-shadow:0 4px 16px rgba(12,29,26,.06);
}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:1rem;font-weight:600;cursor:pointer;
  list-style:none;color:var(--dark);line-height:1.5;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:'+';flex-shrink:0;
  display:grid;place-items:center;
  width:30px;height:30px;border-radius:50%;
  background:var(--primary-light);color:var(--primary);
  font-size:1.25rem;font-weight:600;
  transition:transform .3s ease;
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-answer{
  padding:0 22px 20px;color:var(--text-sub);
  font-size:.9375rem;line-height:1.75;
}
.faq-answer ul{margin-top:8px;display:grid;gap:6px;padding-left:4px}
.faq-answer li{padding-left:16px;position:relative}
.faq-answer li::before{
  content:'';position:absolute;left:0;top:10px;
  width:6px;height:6px;border-radius:50%;background:var(--primary);
}

/* CTA 区块 */
.cta-band{
  position:relative;overflow:hidden;
  background:var(--gradient-dark);
  border-radius:var(--radius-lg);
  padding:clamp(2.5rem,6vw,4.5rem) clamp(1.5rem,5vw,4rem);
  color:#fff;display:flex;align-items:center;justify-content:space-between;
  gap:32px;flex-wrap:wrap;
}
.cta-band::before{
  content:'';position:absolute;left:-100px;bottom:-120px;
  width:320px;height:320px;border-radius:50%;
  background:rgba(14,159,138,.25);pointer-events:none;
}
.cta-band::after{
  content:'';position:absolute;right:10%;top:-60px;
  width:180px;height:180px;border-radius:50%;
  background:rgba(232,163,61,.12);pointer-events:none;
}
.cta-copy{position:relative;z-index:2;max-width:520px}
.cta-copy h2{
  font-size:clamp(1.5rem,2.5vw,2.1rem);font-weight:800;line-height:1.3;
  margin-bottom:12px;
}
.cta-copy p{color:rgba(255,255,255,.85);font-size:.9375rem;line-height:1.7}
.cta-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.cta-points span{
  font-size:.8125rem;color:rgba(255,255,255,.92);
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  padding:6px 14px;border-radius:999px;
}
.cta-actions{position:relative;z-index:2;display:flex;flex-direction:column;gap:14px;align-items:flex-start;min-width:260px}
.cta-note{font-size:.8125rem;color:rgba(255,255,255,.6)}

/* 页脚 */
.site-footer{background:var(--dark);color:rgba(255,255,255,.85);margin-top:clamp(3rem,8vw,6rem)}
.site-footer .container{padding-top:clamp(2.5rem,5vw,4rem)}
.footer-grid{
  display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px;
  padding-bottom:36px;
}
.footer-brand .brand{color:#fff}
.footer-brand .brand-text small{color:rgba(255,255,255,.55)}
.footer-brand p{
  margin-top:16px;font-size:.875rem;line-height:1.75;
  color:rgba(255,255,255,.65);max-width:320px;
}
.footer-col h4{
  font-size:.9375rem;font-weight:600;color:#fff;
  margin-bottom:16px;letter-spacing:.04em;
}
.footer-col ul{display:grid;gap:10px}
.footer-col a{font-size:.875rem;color:rgba(255,255,255,.7);line-height:1.6}
.footer-col a:hover{color:#fff;padding-left:4px}
.footer-contact li{
  display:flex;align-items:center;gap:8px;
  font-size:.875rem;color:rgba(255,255,255,.65);line-height:1.6;
}
.footer-contact span{color:var(--accent)}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:18px 0;
}
.footer-bottom .container{
  display:flex;align-items:center;justify-content:space-between;
  flex-wrap:wrap;gap:8px;
}
.footer-bottom p{font-size:.8125rem;color:rgba(255,255,255,.55)}
.footer-bottom a{color:rgba(255,255,255,.7)}
.footer-bottom a:hover{color:var(--accent)}

/* 响应式 */
@media (max-width:1023px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .solution-grid{grid-template-columns:1fr}
  .case-grid{grid-template-columns:1fr}
}
@media (max-width:767px){
  .brand-text{font-size:1.0625rem}
  .brand-text small{font-size:.6875rem}
  .brand-icon{width:38px;height:38px;border-radius:12px}
  .brand-actions .btn{height:40px;padding:0 14px;font-size:.8125rem}
  .nav-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}
  .nav-wrap::-webkit-scrollbar{display:none}
  .nav-tabs{display:flex;width:max-content;margin:0 auto}
  .nav-tab{padding:8px 16px;font-size:.875rem}
  .hero-actions .btn{width:100%}
  .hero-stats{flex-direction:column;align-items:flex-start}
  .data-badge{width:100%}
  .feature-grid{grid-template-columns:1fr}
  .solution-grid{grid-template-columns:1fr}
  .section-head{margin-bottom:2rem}
  .process-item{padding-left:0;padding-top:80px}
  .process-list::before{left:30px;top:80px;bottom:8px}
  .process-item::before{top:0}
  .process-item .step-card:hover{transform:none}
  .cta-band{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom .container{flex-direction:column;text-align:center}
  .compare-wrap{padding:1.5rem 1rem}
}
@media (max-width:520px){
  .solution-meta{gap:6px}
  .feature-card{padding:22px 18px}
  .faq-item summary{font-size:.9375rem;padding:15px 16px}
  .faq-answer{padding:0 16px 16px}
}

/* roulang page: category3 */
:root {
  --primary: #0E9F8A;
  --primary-light: #2BC0A5;
  --primary-dark: #0B7F6E;
  --accent: #E8A33D;
  --dark: #0C1D1A;
  --dark-2: #153A33;
  --bg: #F5F8F7;
  --card: #FFFFFF;
  --text: #1F2A27;
  --text-muted: #5A6B66;
  --border: #D8E2DF;
  --success: #2BB673;
  --warning: #E8A33D;
  --error: #D9534F;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --radius-pill: 999px;
  --shadow-sm: 0 2px 8px rgba(12, 29, 26, .06);
  --shadow-md: 0 8px 24px rgba(12, 29, 26, .08);
  --shadow-lg: 0 16px 40px rgba(12, 29, 26, .12);
  --gradient-primary: linear-gradient(135deg, #0E9F8A, #2BC0A5);
  --gradient-dark: linear-gradient(135deg, #0C1D1A, #153A33);
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC", "Source Han Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1rem;
}
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary-dark); }
ul, ol { list-style: none; }
button, input, select, textarea { font: inherit; color: inherit; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 clamp(1rem, 4vw, 3rem); }

/* 完整 CSS 设计系统 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, .94);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(12, 29, 26, .06);
  transition: box-shadow .35s ease;
}
.site-header.scrolled { box-shadow: var(--shadow-md); }
.brand-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  color: var(--dark);
}
.brand:hover { color: var(--dark); }
.brand-icon {
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: #fff;
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  flex-shrink: 0;
}
.brand-text {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.2;
  display: flex;
  flex-direction: column;
  color: var(--dark);
  white-space: nowrap;
}
.brand-text small {
  font-size: .72rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: .06em;
}
.brand-actions { display: flex; align-items: center; gap: .75rem; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 48px;
  padding: .85rem 1.75rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: .9375rem;
  line-height: 1.2;
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: transform .2s, box-shadow .25s, background .25s, border-color .25s, color .25s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: #fff;
}
.btn-primary:active { transform: translateY(0); box-shadow: var(--shadow-sm); }
.btn-ghost-light {
  background: transparent;
  border: 2px solid rgba(255, 255, 255, .55);
  color: #fff;
}
.btn-ghost-light:hover {
  background: rgba(255, 255, 255, .08);
  border-color: rgba(255, 255, 255, .9);
  color: #fff;
  transform: translateY(-2px);
}
.btn-ghost-dark {
  background: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}
.btn-ghost-dark:hover {
  background: rgba(14, 159, 138, .08);
  border-color: var(--primary-dark);
}
.btn:focus-visible,
.nav-tab:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}
.nav-wrap { padding-bottom: .875rem; }
.nav-tabs {
  display: flex;
  gap: .25rem;
  background: #E8F0ED;
  padding: .375rem;
  border-radius: var(--radius-pill);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.nav-tabs::-webkit-scrollbar { display: none; }
.nav-tab {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .6rem 1.5rem;
  border-radius: var(--radius-pill);
  font-size: .9375rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  transition: background .25s, color .25s, box-shadow .25s, transform .2s;
  min-height: 40px;
}
.nav-tab:hover {
  background: #fff;
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
  color: var(--text);
}
.nav-tab.active {
  background: var(--dark);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}
.nav-tab.active:hover {
  color: var(--accent);
  transform: none;
}

/* Hero 区 */
.hero-frontier {
  position: relative;
  padding: clamp(4.5rem, 10vw, 7rem) 0;
  color: #fff;
  background:
    linear-gradient(125deg, rgba(12, 29, 26, .94) 0%, rgba(21, 58, 51, .82) 55%, rgba(14, 159, 138, .35) 100%),
    url('/assets/images/backpic/back-1.png') center/cover no-repeat;
  overflow: hidden;
}
.hero-frontier::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 78% 22%, rgba(232, 163, 61, .16), transparent 26%),
    radial-gradient(circle at 15% 80%, rgba(43, 192, 165, .15), transparent 30%);
  pointer-events: none;
}
.hero-frontier::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  pointer-events: none;
}
.hero-inner { position: relative; z-index: 2; max-width: 820px; }
.breadcrumb {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  color: rgba(255, 255, 255, .72);
  margin-bottom: 1.5rem;
}
.breadcrumb a { color: rgba(255, 255, 255, .72); }
.breadcrumb a:hover { color: #fff; }
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  background: rgba(232, 163, 61, .15);
  border: 1px solid rgba(232, 163, 61, .35);
  color: var(--accent);
  font-size: .8125rem;
  font-weight: 600;
  padding: .35rem 1rem;
  border-radius: var(--radius-pill);
  letter-spacing: .05em;
  margin-bottom: 1.5rem;
}
.hero-frontier h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  margin: 0 0 1.25rem;
  color: #fff;
}
.hero-frontier .hero-desc {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
  max-width: 680px;
  margin-bottom: 2rem;
}
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.75rem;
}
.hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .875rem;
}
.stat-pill {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .14);
  border-radius: var(--radius-pill);
  padding: .6rem 1.15rem;
  backdrop-filter: blur(6px);
}
.stat-pill .stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.stat-pill .stat-label {
  font-size: .8125rem;
  color: rgba(255, 255, 255, .75);
  font-weight: 500;
}

/* 通用 section */
.section { padding: clamp(3.5rem, 8vw, 6.5rem) 0; }
.section-head {
  max-width: 760px;
  margin-bottom: clamp(2.25rem, 4vw, 3.5rem);
}
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  font-size: .8125rem;
  font-weight: 600;
  color: var(--primary);
  background: rgba(14, 159, 138, .08);
  padding: .3rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
  letter-spacing: .04em;
}
.section-head h2 {
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--dark);
  margin-bottom: .875rem;
  letter-spacing: -.01em;
}
.section-head p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
}

/* 技术方向 */
.tech-masonry {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
  gap: 1.5rem;
}
.tech-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  border: 1px solid rgba(12, 29, 26, .05);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform .3s, box-shadow .3s;
}
.tech-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.tech-card--hero { grid-row: span 2; display: flex; flex-direction: column; }
.tech-card--wide { grid-column: span 2; }
.tech-card__icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--gradient-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
}
.tech-card--hero .tech-card__icon {
  width: 62px;
  height: 62px;
  font-size: 1.7rem;
  border-radius: 18px;
}
.tech-card__num {
  position: absolute;
  top: 1.5rem;
  right: 1.75rem;
  font-size: .8125rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(14, 159, 138, .09);
  border-radius: var(--radius-pill);
  padding: .25rem .85rem;
}
.tech-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: .75rem;
  line-height: 1.35;
}
.tech-card--hero h3 { font-size: 1.5rem; }
.tech-card p {
  color: var(--text-muted);
  font-size: .9375rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.tech-card--hero p { font-size: 1rem; }
.tech-tags { display: flex; flex-wrap: wrap; gap: .5rem; }
.tech-chip {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  background: rgba(14, 159, 138, .07);
  color: var(--primary);
  font-size: .75rem;
  font-weight: 500;
  padding: .35rem .85rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(14, 159, 138, .14);
}
.tech-card__link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--primary);
  padding-top: 1.25rem;
}
.tech-card__link i { transition: transform .2s; }
.tech-card__link:hover i { transform: translateX(4px); }

/* 时间线 */
.evolution-section { background: #fff; }
.evolution-section .section-head { margin-bottom: 3rem; }
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding-left: 2.25rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: .7rem;
  top: .4rem;
  bottom: .4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--primary) 0%, var(--primary-light) 60%, var(--accent) 100%);
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  padding: 0 0 2.5rem 1.5rem;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -1.8rem;
  top: .3rem;
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 50%;
  background: var(--gradient-primary);
  border: 3px solid #fff;
  box-shadow: var(--shadow-sm);
}
.timeline-item:nth-child(5) .timeline-dot {
  background: var(--accent);
}
.timeline-card {
  background: var(--bg);
  border: 1px solid rgba(12, 29, 26, .05);
  border-radius: var(--radius-md);
  padding: 1.5rem 1.75rem;
  transition: box-shadow .3s, transform .3s;
}
.timeline-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.timeline-stage {
  font-size: .8125rem;
  font-weight: 700;
  color: var(--primary);
  background: rgba(14, 159, 138, .08);
  display: inline-block;
  padding: .3rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: .65rem;
  letter-spacing: .04em;
}
.timeline-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: .4rem;
}
.timeline-card p {
  font-size: .9375rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 文章卡片 */
.articles-section { background: var(--bg); }
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}
.article-card {
  background: var(--card);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(12, 29, 26, .05);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .3s, box-shadow .3s;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.article-cover {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: linear-gradient(135deg, #E8F0ED, #dfeceaq);
  background: linear-gradient(135deg, #E8F0ED, #DCE9E5);
}
.article-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .4s;
}
.article-card:hover .article-cover img { transform: scale(1.04); }
.article-cover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(12, 29, 26, .18));
}
.article-body { padding: 1.5rem 1.75rem 1.75rem; display: flex; flex-direction: column; flex: 1; }
.article-tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  background: rgba(14, 159, 138, .08);
  color: var(--primary);
  font-size: .75rem;
  font-weight: 600;
  padding: .3rem .9rem;
  border-radius: var(--radius-pill);
  margin-bottom: .875rem;
}
.article-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--dark);
  margin-bottom: .65rem;
}
.article-body h3 a { color: var(--dark); }
.article-body h3 a:hover { color: var(--primary); }
.article-body p {
  font-size: .875rem;
  color: var(--text-muted);
  line-height: 1.7;
  flex: 1;
  margin-bottom: 1.25rem;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: .8125rem;
  color: var(--text-muted);
  border-top: 1px solid #EFF4F2;
  padding-top: 1rem;
}
.article-meta i { color: var(--primary); }

/* FAQ */
.faq-section { background: #fff; }
.faq-list { max-width: 860px; margin: 0 auto; }
.faq-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: box-shadow .3s, border-color .3s;
}
.faq-item:hover { box-shadow: var(--shadow-sm); border-color: rgba(14, 159, 138, .3); }
.faq-item[open] { border-color: rgba(14, 159, 138, .4); }
.faq-item summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: background .25s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary);
  line-height: 1;
  transition: transform .3s;
  flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-answer {
  padding: 0 1.5rem 1.4rem;
  color: var(--text-muted);
  font-size: .9375rem;
  line-height: 1.8;
  border-top: 1px dashed #EDF2F0;
  margin: 0 1.5rem;
  padding: 1rem 0 1.4rem;
}

/* CTA Band */
.cta-band { padding: clamp(1rem, 2vw, 2rem) 0 clamp(3.5rem, 6vw, 5rem); }
.cta-inner {
  position: relative;
  background: var(--gradient-dark);
  border-radius: var(--radius-xl);
  padding: clamp(2rem, 5vw, 4rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
  overflow: hidden;
  color: #fff;
  box-shadow: var(--shadow-lg);
}
.cta-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 88% 20%, rgba(232, 163, 61, .14), transparent 22%),
    radial-gradient(circle at 10% 90%, rgba(14, 159, 138, .18), transparent 30%);
  pointer-events: none;
}
.cta-inner::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,.04) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.04) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}
.cta-text { position: relative; z-index: 1; max-width: 560px; flex: 1 1 320px; }
.cta-text h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: .875rem;
  color: #fff;
}
.cta-text p {
  font-size: 1rem;
  color: rgba(255, 255, 255, .78);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}
.cta-points {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem 1.5rem;
}
.cta-points li {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .875rem;
  color: rgba(255, 255, 255, .88);
}
.cta-points li i {
  color: var(--accent);
  font-size: .875rem;
}
.cta-form-wrap {
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  backdrop-filter: blur(8px);
  flex: 1 1 300px;
  max-width: 420px;
}
.cta-form-wrap h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: .5rem;
}
.cta-form-wrap p {
  font-size: .8125rem;
  color: rgba(255, 255, 255, .66);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}
.cta-form { display: flex; flex-direction: column; gap: .875rem; }
.cta-form input,
.cta-form select {
  width: 100%;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, .18);
  background: rgba(255, 255, 255, .1);
  color: #fff;
  padding: 0 1rem;
  font-size: .9375rem;
  outline: none;
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.cta-form input::placeholder { color: rgba(255, 255, 255, .5); }
.cta-form select { appearance: none; -webkit-appearance: none; cursor: pointer; }
.cta-form select option { color: var(--text); background: #fff; }
.cta-form select option:first-child { color: rgba(255,255,255,.5); }
.cta-form input:focus,
.cta-form select:focus {
  border-color: var(--primary-light);
  box-shadow: 0 0 0 3px rgba(14, 159, 138, .25);
  background: rgba(255, 255, 255, .15);
}
.cta-form .btn { width: 100%; margin-top: .25rem; }
.cta-note {
  font-size: .75rem;
  color: rgba(255, 255, 255, .55);
  text-align: center;
  margin-top: .75rem;
  line-height: 1.5;
}

/* 页脚 */
.site-footer {
  background: var(--dark);
  color: rgba(255, 255, 255, .78);
  padding-top: clamp(3rem, 6vw, 4.5rem);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}
.footer-brand .brand {
  color: #fff;
  margin-bottom: 1rem;
}
.footer-brand .brand-text small {
  color: rgba(255, 255, 255, .5);
}
.footer-brand p {
  font-size: .875rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, .6);
  margin-top: 1rem;
  max-width: 340px;
}
.footer-col h4 {
  font-size: .9375rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 1.25rem;
  letter-spacing: .04em;
}
.footer-col ul li { margin-bottom: .65rem; }
.footer-col ul a {
  color: rgba(255, 255, 255, .65);
  font-size: .875rem;
  transition: color .2s, padding-left .2s;
}
.footer-col ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: .6rem;
  font-size: .875rem;
  color: rgba(255, 255, 255, .65);
  line-height: 1.5;
}
.footer-contact li span { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, .08);
  padding: 1.4rem 0;
  text-align: center;
}
.footer-bottom p {
  font-size: .8125rem;
  color: rgba(255, 255, 255, .45);
}
.footer-bottom a { color: rgba(255, 255, 255, .45); }
.footer-bottom a:hover { color: var(--accent); }

/* 响应式 */
@media (max-width: 1023px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .tech-masonry { grid-template-columns: 1fr; }
  .tech-card--hero { grid-row: auto; }
  .tech-card--wide { grid-column: auto; }
  .cta-inner { flex-direction: column; align-items: stretch; }
  .cta-form-wrap { max-width: none; }
}
@media (max-width: 767px) {
  .nav-wrap { overflow-x: auto; padding-bottom: .75rem; }
  .nav-tabs { width: max-content; min-width: 100%; }
  .brand-bar { padding: .75rem 0; }
  .brand-icon { width: 40px; height: 40px; }
  .brand-text { font-size: 1.1rem; }
  .brand-text small { font-size: .68rem; }
  .brand-actions .btn { min-height: 42px; padding: .7rem 1.25rem; font-size: .875rem; }
  .hero-frontier { padding: 3.5rem 0 4.5rem; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; }
  .hero-stats { flex-direction: column; align-items: stretch; }
  .stat-pill { justify-content: space-between; }
  .tech-masonry { gap: 1rem; }
  .tech-card { padding: 1.5rem; }
  .tech-card--hero { grid-row: auto; }
  .tech-card--wide { grid-column: auto; }
  .articles-grid { grid-template-columns: 1fr; }
  .timeline { padding-left: 1.5rem; }
  .timeline-item { padding-left: 1rem; }
  .timeline-dot { left: -1.15rem; width: 1.1rem; height: 1.1rem; }
  .cta-inner { padding: 2rem 1.5rem; border-radius: var(--radius-lg); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .faq-item summary { padding: 1rem 1.25rem; }
  .faq-answer { margin: 0 1.25rem; }
}