/* 一元机场 1Yuan Transit - 现代基础设施网络导视风格系统 */
:root {
  --bg-transit-warm: #F5F2EA;
  --bg-canvas: #EDE8DE;
  --bg-card: #FFFFFF;
  --bg-card-muted: #FAF8F4;
  --bg-card-active: #F0EDE4;
  --bg-card-dark: #1E293B;
  
  /* 交通导向识别色 */
  --line-blue: #1B5EBE;       /* 通行蓝 · 主视觉与核心干线 */
  --line-blue-light: #EBF3FF;
  --line-green: #059669;      /* 路线绿 · 畅通与直连专线 */
  --line-green-light: #ECFDF5;
  --line-orange: #EA580C;     /* 提示橙 · 高峰优化与测速 */
  --line-orange-light: #FFF7ED;
  --line-purple: #7C3AED;     /* 极速紫 · 跨洋与多媒体解锁 */
  --line-cyan: #0284C7;       /* 核心青 · 亚太骨干中转 */
  
  /* 文字与界面层级 */
  --text-primary: #1E293B;    /* 导向牌深黑 */
  --text-secondary: #475569;  /* 次级导向文字 */
  --text-muted: #64748B;      /* 辅助说明 */
  --text-light: #94A3B8;
  --text-inverse: #FFFFFF;
  
  /* 边框与阴影 */
  --border-sign: #E2DCCE;     /* 导向牌边框 */
  --border-focus: #1B5EBE;
  --shadow-sm: 0 1px 3px rgba(30, 41, 59, 0.05);
  --shadow-md: 0 4px 12px rgba(30, 41, 59, 0.08);
  --shadow-lg: 0 12px 28px rgba(30, 41, 59, 0.12);
  --shadow-card: 0 18px 40px -10px rgba(27, 94, 190, 0.18);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-transit-warm);
  color: var(--text-primary);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-transit-warm);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 顶部导视告示条 / Ticker */
.transit-ticker-bar {
  background: var(--text-primary);
  color: #E2E8F0;
  font-size: 0.85rem;
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--line-blue);
}
.ticker-content {
  display: flex;
  align-items: center;
  gap: 12px;
  overflow: hidden;
  white-space: nowrap;
}
.ticker-badge {
  background: var(--line-green);
  color: #fff;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.ticker-badge::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #fff;
  border-radius: 50%;
  animation: pulse-dot 1.5s infinite;
}
.ticker-link {
  color: #93C5FD;
  text-decoration: none;
  font-weight: 600;
  margin-left: 8px;
}
.ticker-link:hover {
  text-decoration: underline;
}

/* 顶部导航栏 / Wayfinding Nav */
.transit-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 242, 234, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-sign);
  transition: var(--transition);
}
.transit-header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

/* 品牌 Logo · 公共交通标牌感 */
.brand-sign {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-primary);
}
.brand-symbol {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--line-blue), #0C3E8A);
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -1px;
  box-shadow: 0 4px 10px rgba(27, 94, 190, 0.3);
  position: relative;
  overflow: hidden;
}
.brand-symbol::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent, rgba(255,255,255,0.25), transparent);
  transform: rotate(30deg);
  animation: card-shine 4s infinite linear;
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.brand-tag {
  font-size: 0.7rem;
  background: var(--line-orange);
  color: #fff;
  padding: 1px 6px;
  border-radius: 4px;
  font-weight: 700;
}
.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}
.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-link:hover, .nav-link.active {
  color: var(--line-blue);
  background: rgba(27, 94, 190, 0.08);
}
.nav-link .line-indicator {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--line-blue);
}

/* 导航行动按钮 */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.btn-transit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  font-size: 0.92rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary {
  background: var(--line-blue);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(27, 94, 190, 0.35);
}
.btn-primary:hover {
  background: #144996;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(27, 94, 190, 0.45);
}
.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-sign);
}
.btn-secondary:hover {
  border-color: var(--line-blue);
  color: var(--line-blue);
  background: #FAF8F4;
}
.btn-orange {
  background: var(--line-orange);
  color: #fff;
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.3);
}
.btn-orange:hover {
  background: #C2410C;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(234, 88, 12, 0.4);
}

/* 移动端菜单按钮 */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
  padding: 6px;
}

/* 页面通用容器 */
.transit-container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}
.section-spacer {
  padding: 80px 0;
}
.section-spacer-sm {
  padding: 48px 0;
}

/* 导向标牌通用标题 (Wayfinding Header) */
.wayfinding-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 52px auto;
}
.sign-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(27, 94, 190, 0.08);
  border: 1px solid rgba(27, 94, 190, 0.25);
  color: var(--line-blue);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}
.sign-pill.orange {
  background: rgba(234, 88, 12, 0.08);
  border-color: rgba(234, 88, 12, 0.25);
  color: var(--line-orange);
}
.sign-pill.green {
  background: rgba(5, 150, 105, 0.08);
  border-color: rgba(5, 150, 105, 0.25);
  color: var(--line-green);
}
.wayfinding-title {
  font-size: 2.35rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 16px;
}
.wayfinding-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ====================================================
   首屏 HERO 区域 · 一元网络通行卡与站点换乘调度舱
   ==================================================== */
.transit-hero {
  position: relative;
  padding: 56px 0 80px 0;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}
.hero-content {
  position: relative;
  z-index: 2;
}
.hero-title {
  font-size: 3.1rem;
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -1px;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.hero-title .highlight-blue {
  color: var(--line-blue);
  position: relative;
  display: inline-block;
}
.hero-title .highlight-blue::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(27, 94, 190, 0.15);
  z-index: -1;
  border-radius: 4px;
}
.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 32px;
}
.hero-badges-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
}
.station-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  padding: 6px 14px;
  border-radius: var(--radius-md);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}
.station-tag .line-code {
  background: var(--text-primary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 4px;
}
.station-tag.hk .line-code { background: var(--line-blue); }
.station-tag.jp .line-code { background: var(--line-orange); }
.station-tag.sg .line-code { background: var(--line-green); }
.station-tag.us .line-code { background: var(--line-purple); }

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 28px;
}
.hero-cta-btn {
  padding: 16px 36px;
  font-size: 1.1rem;
}
.hero-notes {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.86rem;
  color: var(--text-muted);
}
.hero-notes span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ====================================================
   首屏右侧：一元网络通行卡交互调度舱 (Transit Smart Card)
   ==================================================== */
.transit-cockpit-wrap {
  position: relative;
}
.transit-pass-card {
  position: relative;
  background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #0D2447 100%);
  border-radius: 24px;
  padding: 32px;
  color: #FFFFFF;
  box-shadow: var(--shadow-card);
  border: 1px solid rgba(255, 255, 255, 0.15);
  overflow: hidden;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
  perspective: 1000px;
}
.transit-pass-card:hover {
  transform: translateY(-6px) rotateX(2deg) rotateY(-2deg);
  box-shadow: 0 24px 50px -10px rgba(27, 94, 190, 0.35);
}

/* 通行卡顶部：卡号、芯片、NFC */
.card-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 28px;
}
.card-brand-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-chip {
  width: 44px;
  height: 34px;
  background: linear-gradient(135deg, #F59E0B, #D97706);
  border-radius: 6px;
  border: 1px solid #B45309;
  position: relative;
  box-shadow: inset 0 1px 2px rgba(255,255,255,0.4);
}
.card-chip::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 1px;
  background: #92400E;
}
.card-chip::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  width: 1px;
  height: 100%;
  background: #92400E;
}
.card-nfc-icon {
  font-size: 1.5rem;
  color: #94A3B8;
  opacity: 0.8;
}
.card-serial {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: #94A3B8;
  letter-spacing: 1.5px;
}

/* 通行卡中间：卡名称与状态 */
.card-body-row {
  margin-bottom: 28px;
}
.card-title-zh {
  font-size: 1.65rem;
  font-weight: 900;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.card-pill-status {
  background: rgba(16, 185, 129, 0.2);
  border: 1px solid #10B981;
  color: #34D399;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 12px;
}
.card-title-en {
  font-size: 0.75rem;
  color: #94A3B8;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-top: 4px;
}

/* 通行卡动态线路装饰轨道 (Card Metro Circuit) */
.card-metro-graphic {
  position: relative;
  width: 100%;
  height: 80px;
  margin-bottom: 20px;
  background: rgba(15, 23, 42, 0.4);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  overflow: hidden;
}
.card-metro-graphic svg {
  width: 100%;
  height: 100%;
}

/* 通行卡底部：实时换乘状态面板 */
.card-dashboard {
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 16px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}
.dash-item {
  display: flex;
  flex-direction: column;
}
.dash-label {
  font-size: 0.72rem;
  color: #94A3B8;
  margin-bottom: 4px;
}
.dash-value {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 800;
  color: #38BDF8;
}
.dash-value.green {
  color: #34D399;
}
.dash-value.orange {
  color: #FB923C;
}

/* 换乘路线选择器与测速按钮 (Station Switcher) */
.station-switcher-tray {
  margin-top: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-md);
}
.tray-label {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 12px;
}
.station-btn-group {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.station-select-btn {
  background: var(--bg-card-muted);
  border: 1px solid var(--border-sign);
  padding: 10px 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}
.station-select-btn:hover {
  background: #FFF;
  border-color: var(--line-blue);
  transform: translateY(-2px);
}
.station-select-btn.active {
  background: rgba(27, 94, 190, 0.08);
  border-color: var(--line-blue);
  box-shadow: 0 0 0 2px rgba(27, 94, 190, 0.2);
}
.station-select-btn .btn-line-no {
  font-size: 0.7rem;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 4px;
  color: #fff;
}
.station-select-btn .btn-city {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}
.station-select-btn .btn-ping {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--line-green);
  font-weight: 700;
}

.speedtest-action-bar {
  margin-top: 14px;
  display: flex;
  gap: 10px;
}
.btn-speedtest {
  flex: 1;
  background: linear-gradient(135deg, var(--line-orange), #C2410C);
  color: #fff;
  border: none;
  padding: 10px 16px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}
.btn-speedtest:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}
.btn-speedtest:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

/* ====================================================
   核心优势模块 · 导视系统四维保障
   ==================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--line-blue);
  transition: var(--transition);
}
.feature-card:nth-child(2)::before { background: var(--line-green); }
.feature-card:nth-child(3)::before { background: var(--line-orange); }
.feature-card:nth-child(4)::before { background: var(--line-purple); }

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(27, 94, 190, 0.4);
}
.feature-icon-badge {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: rgba(27, 94, 190, 0.08);
  color: var(--line-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}
.feature-card:nth-child(2) .feature-icon-badge { background: rgba(5, 150, 105, 0.08); color: var(--line-green); }
.feature-card:nth-child(3) .feature-icon-badge { background: rgba(234, 88, 12, 0.08); color: var(--line-orange); }
.feature-card:nth-child(4) .feature-icon-badge { background: rgba(124, 58, 237, 0.08); color: var(--line-purple); }

.feature-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}
.feature-desc {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 16px;
  flex: 1;
}
.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.feature-tag-item {
  font-size: 0.75rem;
  background: var(--bg-card-muted);
  border: 1px solid var(--border-sign);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

/* ====================================================
   套餐价格 · 通行卡与充值方案结构
   ==================================================== */
.pricing-section {
  background: #EFE9DC;
  position: relative;
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: 20px;
  padding: 32px 24px;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}
.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.pricing-card.popular {
  border: 2px solid var(--line-blue);
  box-shadow: 0 12px 30px rgba(27, 94, 190, 0.15);
}
.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--line-blue);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
}

/* 通行卡车票感头部 */
.pass-ticket-stub {
  border-bottom: 2px dashed var(--border-sign);
  padding-bottom: 20px;
  margin-bottom: 20px;
  position: relative;
}
.pass-ticket-stub::before, .pass-ticket-stub::after {
  content: "";
  position: absolute;
  bottom: -9px;
  width: 16px;
  height: 16px;
  background: #EFE9DC;
  border-radius: 50%;
}
.pass-ticket-stub::before { left: -32px; }
.pass-ticket-stub::after { right: -32px; }

.plan-type-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--line-blue);
  margin-bottom: 6px;
}
.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.plan-sub {
  font-size: 0.86rem;
  color: var(--text-muted);
  min-height: 40px;
}

.plan-price-box {
  margin: 16px 0 20px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}
.price-currency {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--text-primary);
}
.price-figure {
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}
.price-unit {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plan-features-list {
  list-style: none;
  margin-bottom: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.plan-feature-item {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}
.plan-feature-item svg {
  color: var(--line-green);
  flex-shrink: 0;
}
.plan-cta-btn {
  width: 100%;
  text-align: center;
  padding: 12px 20px;
}

/* ====================================================
   适合人群模块 · 场景化场景图谱
   ==================================================== */
.audience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.audience-card {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition);
}
.audience-card:hover {
  transform: translateY(-4px);
  border-color: var(--line-blue);
  box-shadow: var(--shadow-md);
}
.audience-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: inline-block;
}
.audience-title {
  font-size: 1.2rem;
  font-weight: 800;
  margin-bottom: 8px;
  color: var(--text-primary);
}
.audience-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}
.audience-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.audience-tag {
  font-size: 0.75rem;
  background: var(--bg-card-muted);
  color: var(--text-muted);
  border: 1px solid var(--border-sign);
  padding: 2px 8px;
  border-radius: 4px;
}

/* ====================================================
   客户端使用教程 (Clash / Clash Party 专项新手指南)
   ==================================================== */
.tutorial-section {
  background: #FFF;
}
.tutorial-tabs-header {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.tut-tab-btn {
  background: var(--bg-transit-warm);
  border: 1px solid var(--border-sign);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.tut-tab-btn:hover {
  border-color: var(--line-blue);
  color: var(--line-blue);
}
.tut-tab-btn.active {
  background: var(--line-blue);
  color: #fff;
  border-color: var(--line-blue);
  box-shadow: 0 4px 12px rgba(27, 94, 190, 0.25);
}

.tutorial-tab-pane {
  display: none;
}
.tutorial-tab-pane.active {
  display: block;
}

.tutorial-step-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.tut-step-card {
  background: var(--bg-card-muted);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  position: relative;
}
.tut-step-no {
  width: 36px;
  height: 36px;
  background: var(--line-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1rem;
  margin-bottom: 16px;
}
.tut-step-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
}
.tut-step-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.tutorial-media-box {
  background: var(--bg-card-muted);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: center;
}
.tutorial-media-img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  object-fit: cover;
}
.tutorial-tips-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.tip-item {
  display: flex;
  gap: 12px;
}
.tip-icon {
  color: var(--line-orange);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.tip-text h4 {
  font-size: 1rem;
  font-weight: 800;
  margin-bottom: 4px;
}
.tip-text p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ====================================================
   全球站点雷达 / 测速运行态势
   ==================================================== */
.radar-section {
  background: var(--text-primary);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.radar-section .wayfinding-title {
  color: #fff;
}
.radar-section .wayfinding-desc {
  color: #94A3B8;
}

.radar-content-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}
.radar-screen-card {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.15);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}
.radar-screen-img {
  width: 100%;
  display: block;
}

.stations-live-table {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 16px;
  overflow: hidden;
}
.live-table-header {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1.2fr;
  padding: 14px 20px;
  background: rgba(30, 41, 59, 0.8);
  font-size: 0.8rem;
  color: #94A3B8;
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.live-table-row {
  display: grid;
  grid-template-columns: 2fr 1.5fr 1fr 1.2fr;
  padding: 14px 20px;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.88rem;
  transition: background 0.2s;
}
.live-table-row:hover {
  background: rgba(255, 255, 255, 0.04);
}
.station-name-col {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}
.station-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  animation: pulse-dot 1.5s infinite;
}
.station-type-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  padding: 2px 6px;
  border-radius: 4px;
  display: inline-block;
}
.station-ping-col {
  font-family: var(--font-mono);
  font-weight: 700;
  color: #34D399;
}
.station-load-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
}
.load-fill {
  height: 100%;
  background: #10B981;
  border-radius: 3px;
}

/* ====================================================
   用户评价 · 用户真实评价
   ==================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}
.review-stars {
  color: #F59E0B;
  font-size: 1.1rem;
  margin-bottom: 14px;
}
.review-quote {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex: 1;
}
.reviewer-info {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-sign);
  padding-top: 14px;
}
.reviewer-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--bg-card-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: var(--line-blue);
  border: 1px solid var(--border-sign);
}
.reviewer-meta h4 {
  font-size: 0.92rem;
  font-weight: 700;
}
.reviewer-meta p {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ====================================================
   常见问题 FAQ
   ==================================================== */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover {
  border-color: var(--line-blue);
}
.faq-question {
  padding: 20px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  user-select: none;
}
.faq-toggle-icon {
  font-size: 1.2rem;
  color: var(--line-blue);
  transition: transform 0.3s ease;
}
.faq-item.open .faq-toggle-icon {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
  background: var(--bg-card-muted);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
}
.faq-item.open .faq-answer {
  max-height: 600px;
  padding: 16px 24px 24px 24px;
  border-top: 1px solid var(--border-sign);
}

/* ====================================================
   文章站 / 知识库文章列表 (Article Directory)
   ==================================================== */
.articles-section {
  background: var(--bg-transit-warm);
}
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}
.article-card:hover {
  transform: translateY(-6px);
  border-color: var(--line-blue);
  box-shadow: var(--shadow-lg);
}
.article-card-cover {
  height: 160px;
  background: linear-gradient(135deg, #1E293B, #0F172A);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow: hidden;
}
.article-cover-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}
.article-cover-icon {
  font-size: 3rem;
  opacity: 0.9;
}
.article-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}
.article-meta-row {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.article-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.45;
  margin-bottom: 12px;
  transition: color 0.2s;
}
.article-card:hover .article-title {
  color: var(--line-blue);
}
.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex: 1;
}
.article-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border-sign);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--line-blue);
}

/* ====================================================
   文章详情页排版规范 (Article Reader Typography)
   ==================================================== */
.article-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px 24px;
}
.article-header {
  margin-bottom: 36px;
  border-bottom: 1px solid var(--border-sign);
  padding-bottom: 28px;
}
.breadcrumbs-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.breadcrumbs-nav a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumbs-nav a:hover {
  color: var(--line-blue);
}
.article-main-title {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.article-info-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 0.86rem;
  color: var(--text-muted);
}
.article-info-bar span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 48px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: #334155;
  box-shadow: var(--shadow-sm);
  margin-bottom: 48px;
}
.article-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 36px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid rgba(27, 94, 190, 0.15);
  display: flex;
  align-items: center;
  gap: 8px;
}
.article-content h2::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 22px;
  background: var(--line-blue);
  border-radius: 2px;
}
.article-content h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 28px 0 12px 0;
}
.article-content p {
  margin-bottom: 18px;
}
.article-content ul, .article-content ol {
  margin-bottom: 20px;
  padding-left: 28px;
}
.article-content li {
  margin-bottom: 8px;
}
.article-content strong {
  color: var(--text-primary);
}
.article-content blockquote {
  background: var(--bg-card-muted);
  border-left: 4px solid var(--line-blue);
  padding: 16px 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  font-style: normal;
  color: var(--text-secondary);
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.95rem;
}
.article-content th, .article-content td {
  border: 1px solid var(--border-sign);
  padding: 12px 16px;
  text-align: left;
}
.article-content th {
  background: var(--bg-card-muted);
  font-weight: 700;
}
.article-content tr:nth-child(even) td {
  background: #FAF9F6;
}

/* 文章内置 CTA 通行卡横幅 */
.article-cta-banner {
  background: linear-gradient(135deg, #1E293B, #0F172A);
  border-radius: var(--radius-lg);
  padding: 36px;
  color: #fff;
  margin: 40px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.article-cta-banner h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 8px;
}
.article-cta-banner p {
  color: #94A3B8;
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* 文章相关推荐与内部链接 */
.related-posts-box {
  background: var(--bg-card);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
}
.related-posts-box h3 {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--text-primary);
}
.related-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.related-link-card {
  padding: 14px 18px;
  background: var(--bg-card-muted);
  border: 1px solid var(--border-sign);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 0.92rem;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.related-link-card:hover {
  background: #fff;
  border-color: var(--line-blue);
  color: var(--line-blue);
  transform: translateX(4px);
}

/* ====================================================
   页脚 · 交通导向网站地图与法律政策
   ==================================================== */
.transit-footer {
  background: #1E293B;
  color: #E2E8F0;
  padding: 64px 0 32px 0;
  border-top: 3px solid var(--line-blue);
}
.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand-desc {
  font-size: 0.9rem;
  color: #94A3B8;
  line-height: 1.7;
  margin: 16px 0 24px 0;
}
.footer-col-title {
  font-size: 1rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-link {
  color: #94A3B8;
  text-decoration: none;
  font-size: 0.88rem;
  transition: color 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-link:hover {
  color: #38BDF8;
}

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
  color: #64748B;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-legal-links {
  display: flex;
  gap: 20px;
}
.footer-legal-links a {
  color: #94A3B8;
  text-decoration: none;
}
.footer-legal-links a:hover {
  color: #fff;
}

/* 浮动返回顶部按钮 & 快捷 Toast 提示 */
.floating-back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  background: var(--line-blue);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  border: none;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
}
.floating-back-top.visible {
  opacity: 1;
  visibility: visible;
}
.transit-toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #0F172A;
  color: #fff;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  box-shadow: 0 10px 25px rgba(0,0,0,0.3);
  z-index: 1000;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  opacity: 0;
  pointer-events: none;
}
.transit-toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* 动效关键帧 */
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(1.2); }
}
@keyframes card-shine {
  0% { transform: translateX(-150%) rotate(30deg); }
  100% { transform: translateX(250%) rotate(30deg); }
}

/* 响应式媒体查询适配 */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .features-grid, .pricing-grid, .audience-grid, .tutorial-step-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .radar-content-grid { grid-template-columns: 1fr; }
  .footer-top-grid { grid-template-columns: repeat(2, 1fr); }
  .articles-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .hero-title { font-size: 2.2rem; }
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--bg-transit-warm);
    border-bottom: 2px solid var(--border-sign);
    padding: 20px;
    box-shadow: var(--shadow-lg);
  }
  .features-grid, .pricing-grid, .audience-grid, .tutorial-step-grid, .reviews-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  .tutorial-media-box { grid-template-columns: 1fr; }
  .article-content { padding: 24px 16px; }
  .article-cta-banner { flex-direction: column; text-align: center; }
  .footer-top-grid { grid-template-columns: 1fr; }
  .related-links-grid { grid-template-columns: 1fr; }
  .station-btn-group { grid-template-columns: repeat(2, 1fr); }
}