/* ===================================================================
   宝贝云 (baobeiyun.lol) - 官方极简高效原生样式表
   风格美学：Understated mother-of-pearl & gentle cloud-buoyancy luxury
   温润母贝·沉稳羊绒白·香槟琥珀微光·意式浓缩石板黑·柔和云端浮力交互
   零多余AI机器人火花/霓虹·纯原生极致秒开
   =================================================================== */

:root {
  /* 白天模式（默认）：羊绒象牙白与温润母贝色系 */
  --bg-primary: #fbfaf8;
  --bg-secondary: #f4f2ec;
  --bg-tertiary: #ebe7de;
  --bg-card: rgba(255, 255, 255, 0.92);
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(251, 250, 248, 0.88);
  --border-glass: rgba(218, 212, 200, 0.65);

  /* 文字层次：Calm espresso-slate typography */
  --text-primary: #1e1e20;
  --text-secondary: #4a4744;
  --text-muted: #827e77;
  --text-inverse: #fbfaf8;

  /* 核心主调：Muted champagne-amber accents 沉稳香槟琥珀金 */
  --brand-primary: #d97706;
  --brand-primary-hover: #b45309;
  --brand-secondary: #c2410c;
  --brand-accent: #f59e0b;
  --brand-gradient: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  --brand-gradient-hover: linear-gradient(135deg, #b45309 0%, #92400e 100%);

  /* 边框与微光 */
  --border-color: #e5e0d5;
  --border-subtle: #eeeae0;
  --border-pearl: rgba(217, 119, 6, 0.16);
  --rim-highlight: rgba(255, 255, 255, 0.85);

  /* 柔和弥散阴影 */
  --shadow-sm: 0 1px 3px rgba(30, 30, 32, 0.04);
  --shadow-md: 0 12px 34px -8px rgba(30, 30, 32, 0.06), 0 2px 8px rgba(30, 30, 32, 0.02);
  --shadow-lg: 0 22px 50px -12px rgba(30, 30, 32, 0.09), 0 4px 14px rgba(30, 30, 32, 0.03);
  --shadow-buoyancy: 0 20px 45px -12px rgba(217, 119, 6, 0.14), 0 4px 12px rgba(30, 30, 32, 0.03);

  /* 标签徽章 */
  --badge-bg: #fdf5ea;
  --badge-text: #b45309;
  --badge-border: #f9d8a7;

  --pill-bg: rgba(30, 30, 32, 0.03);
  --pill-border: rgba(30, 30, 32, 0.08);

  --status-green: #059669;
}

[data-theme="dark"] {
  /* 夜间模式：深邃珠光沉浸黑曜石 */
  --bg-primary: #121316;
  --bg-secondary: #181a1f;
  --bg-tertiary: #22252c;
  --bg-card: rgba(24, 26, 31, 0.85);
  --bg-card-hover: rgba(32, 35, 42, 0.95);
  --bg-glass: rgba(18, 19, 22, 0.88);
  --border-glass: rgba(255, 255, 255, 0.08);

  --text-primary: #fbfaf8;
  --text-secondary: #b0ada6;
  --text-muted: #726f68;
  --text-inverse: #121316;

  --brand-primary: #f59e0b;
  --brand-primary-hover: #fbbf24;
  --brand-secondary: #d97706;
  --brand-accent: #fbbf24;
  --brand-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  --brand-gradient-hover: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);

  --border-color: rgba(255, 255, 255, 0.09);
  --border-subtle: rgba(255, 255, 255, 0.05);
  --border-pearl: rgba(245, 158, 11, 0.25);
  --rim-highlight: rgba(255, 255, 255, 0.08);

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 34px -8px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 24px 50px -12px rgba(0, 0, 0, 0.7);
  --shadow-buoyancy: 0 20px 45px -12px rgba(245, 158, 11, 0.15), 0 4px 14px rgba(0, 0, 0, 0.5);

  --badge-bg: rgba(245, 158, 11, 0.12);
  --badge-text: #fbbf24;
  --badge-border: rgba(245, 158, 11, 0.25);

  --pill-bg: rgba(255, 255, 255, 0.04);
  --pill-border: rgba(255, 255, 255, 0.09);

  --status-green: #10b981;
}

/* 基础重置与平滑滚动 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  transition: background-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* 容器布局 */
.container {
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 温润母贝与天际云端环境背景光 */
.ambient-glow {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  max-width: 1400px;
  height: 620px;
  background: radial-gradient(circle at 50% 15%, rgba(217, 119, 6, 0.07) 0%, rgba(235, 230, 220, 0.35) 45%, transparent 72%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .ambient-glow {
  background: radial-gradient(circle at 50% 15%, rgba(245, 158, 11, 0.08) 0%, rgba(35, 37, 43, 0.35) 50%, transparent 75%);
}

/* ===================================================================
   顶部导航栏 (Header & Navbar)
   =================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: var(--bg-glass);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: var(--shadow-sm);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

/* 品牌 Logo */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  text-decoration: none;
}

.site-logo {
  height: 42px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  display: block;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.site-logo:hover {
  transform: translateY(-1px);
}

.site-logo-dark {
  display: none;
}

[data-theme="dark"] .site-logo-light {
  display: none;
}

[data-theme="dark"] .site-logo-dark {
  display: block;
}

.brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 6px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  letter-spacing: 0.5px;
  align-self: center;
}

/* 导航链接目录（包含首页、各板块锚点与推荐资讯） */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s ease;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--brand-gradient);
  transition: width 0.25s ease;
  border-radius: 2px;
}

.nav-link:hover::after {
  width: 100%;
}

/* 推荐资讯特殊微光胶囊标签 */
.nav-link-highlight {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px !important;
  border-radius: 20px;
  background: var(--badge-bg);
  color: var(--badge-text) !important;
  border: 1px solid var(--badge-border);
  font-weight: 600;
}

.nav-link-highlight::after {
  display: none !important;
}

.nav-link-highlight:hover {
  transform: translateY(-1px);
}

/* 头部右侧操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 昼夜模式切换按钮：精致半透明磨砂设计 */
.theme-toggle-btn {
  position: relative;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
  backdrop-filter: blur(8px);
}

.theme-toggle-btn:hover {
  transform: translateY(-1px);
  background: var(--bg-tertiary);
  border-color: var(--border-color);
}

.theme-toggle-btn:active {
  transform: scale(0.96);
}

.theme-toggle-btn svg {
  width: 19px;
  height: 19px;
  stroke-width: 2;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.25s ease;
}

.icon-sun { display: block; }
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: block; }

.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--pill-bg);
  border: 1px solid var(--pill-border);
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

/* ===================================================================
   按钮与触觉阻尼微动效 (Tactile Damping & CTA)
   =================================================================== */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.94rem;
  padding: 10px 22px;
  border-radius: 12px;
  background: var(--brand-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 16px rgba(217, 119, 6, 0.24);
  white-space: nowrap;
  letter-spacing: 0.2px;
  transition: transform 0.25s cubic-bezier(0.25, 1, 0.5, 1),
              box-shadow 0.25s ease,
              background 0.25s ease;
}

.btn-cta:hover {
  background: var(--brand-gradient-hover);
  transform: translateY(-1.5px);
  box-shadow: 0 8px 24px rgba(217, 119, 6, 0.32);
}

/* 按钮微按压阻尼感 (Quiet, cushioned tactile damping) */
.btn-cta:active {
  transform: scale(0.985);
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.2);
}

.btn-cta-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  border-radius: 14px;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 1.02rem;
  padding: 14px 28px;
  border-radius: 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
  transition: transform 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateY(-1.5px);
}

.btn-secondary:active {
  transform: scale(0.985);
}

/* ===================================================================
   主视觉区 (Hero Section)
   =================================================================== */
.hero-section {
  position: relative;
  z-index: 1;
  padding: 76px 0 64px 0;
  text-align: center;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: 30px;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--badge-text);
  font-size: 0.86rem;
  font-weight: 600;
  margin-bottom: 26px;
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.08);
}

/* 香槟琥珀色微呼吸光点 */
.amber-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand-primary);
  box-shadow: 0 0 0 0 rgba(217, 119, 6, 0.7);
  animation: amber-pulse 2.2s infinite;
}

@keyframes amber-pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 119, 6, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 7px rgba(217, 119, 6, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(217, 119, 6, 0); }
}

.hero-title {
  font-size: clamp(2rem, 3.8vw, 3.2rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.5px;
  margin-bottom: 22px;
  max-width: 1180px;
  margin-left: auto;
  margin-right: auto;
  color: var(--text-primary);
  text-wrap: balance;
}

.hero-title .brand-highlight {
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
  white-space: nowrap;
}

.hero-subline {
  display: inline-block;
  white-space: nowrap;
  font-size: clamp(1.2rem, 2.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.2px;
  margin-top: 8px;
  max-width: 100%;
}

@media (max-width: 640px) {
  .hero-subline {
    font-size: clamp(0.95rem, 4.3vw, 1.3rem);
    letter-spacing: -0.3px;
  }
}

/* 主视觉区简介（丰富详实） */
.hero-intro-box {
  max-width: 800px;
  margin: 0 auto 38px auto;
}

.hero-subtitle {
  font-size: clamp(1.08rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 12px;
}

.hero-detail-desc {
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 46px;
  flex-wrap: wrap;
}

/* 核心云端指标条 (Cloud-buoyancy Stats) */
.hero-stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 880px;
  margin: 0 auto 46px auto;
  padding: 22px 26px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  box-shadow: var(--shadow-md);
  backdrop-filter: blur(12px);
}

.stat-item {
  text-align: center;
  border-right: 1px solid var(--border-color);
  padding: 0 12px;
}

.stat-item:last-child {
  border-right: none;
}

.stat-num {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--brand-primary);
  line-height: 1.2;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-top: 4px;
}

/* 路线卡片与节点看板 (Route Preview Board) */
.hero-preview-board {
  max-width: 960px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  backdrop-filter: blur(14px);
  text-align: left;
}

.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.board-dots {
  display: flex;
  gap: 8px;
}

.board-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}
.dot-red { background: #e07065; }
.dot-yellow { background: #e6b15c; }
.dot-green { background: #62b587; }

.board-title {
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 7px;
}

.board-nodes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  padding: 22px;
}

/* 温润浮力微交互卡片 (2px Lift with Spring Easing & Champagne Verification Dot) */
.route-node-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  position: relative;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s ease;
}

.route-node-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-buoyancy);
  border-color: var(--border-pearl);
}

.route-node-card .verification-dot {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: transparent;
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.route-node-card:hover .verification-dot {
  background: var(--brand-primary);
  box-shadow: 0 0 8px rgba(217, 119, 6, 0.6);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.node-flag {
  font-size: 1.25rem;
  line-height: 1;
}

.node-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
}

.node-type {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.node-ping {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--status-green);
  background: rgba(5, 150, 105, 0.08);
  padding: 4px 9px;
  border-radius: 8px;
}

/* ===================================================================
   分节通用标题 (Section Headers)
   =================================================================== */
.section {
  padding: 92px 0;
  position: relative;
  z-index: 1;
}

.section-alt {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px auto;
}

.section-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.8px;
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.6px;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* ===================================================================
   核心优势卡片 (Core Advantages - 3 Cards, 24px Radius & Pearlescent Rim)
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 38px 32px;
  box-shadow: var(--shadow-md);
  position: relative;
  display: flex;
  flex-direction: column;
  box-shadow: 0 12px 36px -8px rgba(30, 30, 32, 0.05), inset 0 1px 0 var(--rim-highlight);
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-buoyancy);
  border-color: var(--border-pearl);
  background: var(--bg-card-hover);
}

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--badge-bg);
  color: var(--brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  border: 1px solid var(--badge-border);
}

.feature-icon-wrap svg {
  width: 26px;
  height: 26px;
}

.feature-title {
  font-size: 1.28rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 22px;
  flex-grow: 1;
}

.feature-list {
  border-top: 1px solid var(--border-color);
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.feature-list-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.feature-list-item svg {
  width: 16px;
  height: 16px;
  color: var(--brand-primary);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体 & AI 赋能双图卡专区 (Modular 24px Cloud-buoyancy)
   =================================================================== */
.showcase-dual-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 42px 36px;
  box-shadow: 0 12px 36px -8px rgba(30, 30, 32, 0.05), inset 0 1px 0 var(--rim-highlight);
  position: relative;
  overflow: hidden;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s ease;
}

.showcase-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-buoyancy);
  border-color: var(--border-pearl);
}

.showcase-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 18px;
  background: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
}

.showcase-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.showcase-desc {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 26px;
}

.brand-badges-matrix {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 26px;
}

.brand-badge-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.brand-badge-item:hover {
  border-color: var(--brand-primary);
  transform: translateY(-1px);
}

.brand-badge-item svg {
  width: 19px;
  height: 19px;
  flex-shrink: 0;
}

.showcase-specs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}

.spec-pill {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 11px;
  border-radius: 6px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

/* ===================================================================
   套餐价格对比表 (Pricing Section - 参考真实行情)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 34px 26px;
  box-shadow: 0 12px 34px -8px rgba(30, 30, 32, 0.05), inset 0 1px 0 var(--rim-highlight);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              border-color 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-buoyancy);
  border-color: var(--border-pearl);
}

/* 热门推荐卡片 */
.pricing-card.featured {
  border: 2px solid var(--brand-primary);
  box-shadow: var(--shadow-buoyancy);
  background: var(--bg-card);
}

.pricing-ribbon {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-gradient);
  color: #ffffff;
  font-size: 0.74rem;
  font-weight: 800;
  padding: 5px 16px;
  border-radius: 20px;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  z-index: 2;
  box-sizing: border-box;
}

.pricing-header {
  margin-bottom: 20px;
  text-align: center;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-price-wrap {
  margin: 18px 0;
  text-align: center;
}

.plan-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  vertical-align: top;
  margin-right: 2px;
}

.plan-amount {
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
}

.plan-period {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.plan-discount-tag {
  font-size: 0.76rem;
  color: var(--brand-primary);
  background: var(--badge-bg);
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: 600;
  display: inline-block;
  margin-top: 4px;
  white-space: nowrap;
}

.pricing-features {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
  border-top: 1px solid var(--border-color);
  padding-top: 22px;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.pricing-feature-item svg {
  width: 17px;
  height: 17px;
  color: var(--brand-primary);
  flex-shrink: 0;
}

.pricing-btn {
  width: 100%;
}

/* ===================================================================
   用户评价 (User Reviews / Testimonials)
   =================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 22px;
  padding: 30px;
  box-shadow: 0 10px 30px -8px rgba(30, 30, 32, 0.05), inset 0 1px 0 var(--rim-highlight);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s ease,
              border-color 0.3s ease;
}

.review-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-buoyancy);
  border-color: var(--border-pearl);
}

.review-stars {
  display: flex;
  gap: 3px;
  color: var(--brand-primary);
  margin-bottom: 16px;
}

.review-stars svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.review-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
  flex-grow: 1;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--brand-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.92rem;
  flex-shrink: 0;
}

.author-meta {
  flex-grow: 1;
}

.author-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
}

.author-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.verified-tag {
  font-size: 0.72rem;
  color: var(--status-green);
  background: rgba(5, 150, 105, 0.09);
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}

/* ===================================================================
   常见问题解答 (FAQ Accordion)
   =================================================================== */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}

.faq-item:hover {
  border-color: var(--border-pearl);
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  background: transparent;
  cursor: pointer;
}

.faq-chevron {
  width: 19px;
  height: 19px;
  stroke: var(--text-muted);
  stroke-width: 2.2;
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-chevron {
  transform: rotate(180deg);
  stroke: var(--brand-primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

.faq-item.active .faq-answer {
  padding-bottom: 22px;
}

/* ===================================================================
   页脚 (Footer) - 严格只保留四大独立跳转链接
   =================================================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 48px 0 36px 0;
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 24px;
  text-align: center;
}

.footer-four-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  padding: 6px 14px;
  border-radius: 10px;
  transition: color 0.2s ease, background 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-nav-link:hover {
  color: var(--brand-primary);
  background: var(--bg-tertiary);
}

.footer-nav-link svg {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ===================================================================
   子页面通用与资讯详情页面样式
   =================================================================== */
.subpage-hero {
  padding: 64px 0 42px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
}

.subpage-badge {
  display: inline-block;
  padding: 4px 14px;
  border-radius: 20px;
  background: var(--badge-bg);
  color: var(--badge-text);
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.subpage-title {
  font-size: clamp(2rem, 3.8vw, 2.7rem);
  font-weight: 900;
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}

.subpage-date {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.subpage-content-wrap {
  padding: 60px 0 80px 0;
  max-width: 860px;
  margin: 0 auto;
}

.legal-article, .about-article {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 46px;
  box-shadow: 0 10px 30px -8px rgba(30, 30, 32, 0.05), inset 0 1px 0 var(--rim-highlight);
}

.legal-article h2, .about-article h2 {
  font-size: 1.45rem;
  font-weight: 800;
  margin-top: 36px;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

.legal-article h2:first-child, .about-article h2:first-child {
  margin-top: 0;
}

.legal-article p, .about-article p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.legal-article ul, .about-article ul {
  margin-bottom: 20px;
  padding-left: 20px;
  list-style: disc;
}

.legal-article li, .about-article li {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 8px;
}

.highlight-box {
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-left: 4px solid var(--brand-primary);
  border-radius: 12px;
  padding: 20px;
  margin: 24px 0;
}

.highlight-box p {
  color: var(--badge-text) !important;
  font-weight: 600;
  margin-bottom: 0 !important;
}

/* 资讯卡片网格列表 (推荐资讯页面专用) */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
  margin-bottom: 40px;
}

.insight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 22px;
  padding: 30px;
  box-shadow: 0 10px 30px -8px rgba(30, 30, 32, 0.05), inset 0 1px 0 var(--rim-highlight);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.35s ease,
              border-color 0.3s ease;
}

.insight-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-buoyancy);
  border-color: var(--border-pearl);
}

.insight-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.insight-cat {
  color: var(--brand-primary);
  background: var(--badge-bg);
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 600;
}

.insight-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.insight-summary {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
  flex-grow: 1;
  margin-bottom: 20px;
}

.insight-read-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--brand-primary);
}

/* 网站地图分块 */
.sitemap-sections-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.sitemap-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 30px;
  box-shadow: var(--shadow-sm);
}

.sitemap-box h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.sitemap-links-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sitemap-item-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: all 0.2s ease;
}

.sitemap-item-link:hover {
  background: var(--bg-tertiary);
  border-color: var(--brand-primary);
  color: var(--brand-primary);
  transform: translateX(3px);
}

/* ===================================================================
   响应式设计 (@media)
   =================================================================== */
@media (max-width: 1024px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .showcase-dual-grid {
    grid-template-columns: 1fr;
  }
  .insights-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }
  
  .nav-menu {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 24px 20px;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
    box-shadow: var(--shadow-lg);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    font-size: 1.05rem;
    width: 100%;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-section {
    padding: 48px 0 40px 0;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn-cta, 
  .hero-actions .btn-secondary {
    width: 100%;
    max-width: 100%;
    min-height: 50px;
  }

  .hero-stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .stat-item:nth-child(2) {
    border-right: none;
  }

  .board-nodes-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .reviews-grid {
    grid-template-columns: 1fr;
  }

  .brand-badges-matrix {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-four-nav {
    flex-direction: column;
    gap: 14px;
    width: 100%;
  }

  .footer-nav-link {
    width: 100%;
    justify-content: center;
    padding: 12px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
  }

  .sitemap-sections-grid {
    grid-template-columns: 1fr;
  }

  .legal-article, .about-article {
    padding: 26px 20px;
  }
}

@media (max-width: 480px) {
  .hero-stats-bar {
    grid-template-columns: 1fr;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
  }
  .stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .brand-badges-matrix {
    grid-template-columns: 1fr;
  }
}

/* ===================================================================
   SEO 深度科普文章专用样式 (Article Layout, TOC, Callouts, Tables)
   =================================================================== */
.article-page-wrap {
  padding: 40px 0 80px 0;
  max-width: 920px;
  margin: 0 auto;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.breadcrumb-nav a {
  color: var(--text-secondary);
  transition: color 0.2s ease;
}

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

.breadcrumb-sep {
  opacity: 0.5;
}

.article-header {
  margin-bottom: 32px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.article-h1 {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: -0.6px;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.article-summary-lead {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.8;
  padding: 18px 22px;
  background: var(--bg-secondary);
  border-left: 4px solid var(--brand-primary);
  border-radius: 0 14px 14px 0;
  margin-bottom: 28px;
}

/* 目录 (TOC - Table of Contents) */
.article-toc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 24px 28px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-sm);
}

.article-toc-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-left: 6px;
}

.toc-item-link {
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: color 0.2s ease, transform 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.toc-item-link:hover {
  color: var(--brand-primary);
  transform: translateX(3px);
}

/* 正文排版 */
.seo-article-content {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 24px;
  padding: 46px 40px;
  box-shadow: 0 10px 30px -8px rgba(30, 30, 32, 0.05);
}

.seo-article-content h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-top: 40px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
  scroll-margin-top: 90px;
}

.seo-article-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 10px;
  scroll-margin-top: 90px;
}

.seo-article-content p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 18px;
}

.seo-article-content ul, .seo-article-content ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

.seo-article-content li {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
}

.seo-article-content a.internal-link {
  color: var(--brand-primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: opacity 0.2s ease;
}

.seo-article-content a.internal-link:hover {
  opacity: 0.85;
}

/* 对比表格 */
.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
}

.article-table th {
  background: var(--bg-secondary);
  padding: 12px 16px;
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 1px solid var(--border-color);
}

.article-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

.article-table tr:last-child td {
  border-bottom: none;
}

/* 重点提示框 */
.callout-box {
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  border-radius: 14px;
  padding: 20px;
  margin: 24px 0;
}

.callout-box h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--badge-text);
  margin-bottom: 8px;
}

.callout-box p {
  color: var(--badge-text) !important;
  margin-bottom: 0 !important;
}

/* 相关阅读网格 */
.related-posts-section {
  margin-top: 50px;
  padding-top: 36px;
  border-top: 1px solid var(--border-color);
}

.related-posts-title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.related-posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.related-post-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 14px;
  padding: 18px;
  transition: transform 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

.related-post-card:hover {
  transform: translateY(-2px);
  border-color: var(--brand-primary);
}

.related-post-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 8px;
}

.related-post-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.6;
  flex-grow: 1;
}

/* 文章底部 CTA 悬浮卡 */
.article-cta-box {
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.08) 0%, rgba(245, 158, 11, 0.04) 100%);
  border: 1px solid var(--border-pearl);
  border-radius: 18px;
  padding: 32px;
  text-align: center;
  margin-top: 40px;
}

.article-cta-box h3 {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.article-cta-box p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 20px auto;
}

@media (max-width: 768px) {
  .related-posts-grid {
    grid-template-columns: 1fr;
  }
  .seo-article-content {
    padding: 28px 20px;
  }
}