/* ========================================================
   Clash评测指南 (clashpingce.blog) - 核心样式表
   视觉风格：带批注的实操讲义（淡蓝灰纸面 + 藏蓝标题 + 杏黄标记 + 方格纹理）
   ======================================================== */

:root {
  --bg-paper: #f8fafc;
  --bg-card: #ffffff;
  --bg-card-subtle: #f1f5f9;
  --bg-grid: rgba(148, 163, 184, 0.12);
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-navy: #0f172a;
  --border-color: #e2e8f0;
  --border-strong: #cbd5e1;
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --accent-amber: #d97706;
  --accent-amber-light: #fef3c7;
  --accent-amber-border: #fde68a;
  --tag-bg: #e0f2fe;
  --tag-text: #0369a1;
  --verified-bg: #ecfdf5;
  --verified-text: #059669;
  --unverified-bg: #fffbeb;
  --unverified-text: #b45309;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 10px 25px -5px rgba(15, 23, 42, 0.1);
  --container-width: 1040px;
  --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;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-paper);
  background-image: 
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: -1px -1px;
  color: var(--text-main);
  line-height: 1.65;
  font-size: 14.5px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: all 0.15s ease-in-out;
}

a:hover {
  color: var(--primary-hover);
  text-decoration: underline;
}

/* 容器 */
.container,
.site-container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  width: 100%;
}

/* 顶部导航 */
.site-header {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  width: 100%;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text-navy);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover {
  text-decoration: none;
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  display: block;
}

.brand-domain {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-link {
  font-size: 0.84rem;
  font-weight: 600;
  padding: 5px 9px;
  border-radius: var(--radius-sm);
  color: #334155;
  text-decoration: none;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.nav-link:hover {
  background: var(--bg-card-subtle);
  color: var(--primary);
  text-decoration: none;
}

.nav-link.active {
  background: #e2e8f0;
  color: var(--text-navy);
}

.nav-link.highlight {
  background: #0284c7;
  color: #ffffff;
}

.nav-link.highlight:hover {
  background: #0369a1;
  color: #ffffff;
}

/* 搜索栏 */
.search-wrapper {
  position: relative;
  min-width: 200px;
  max-width: 260px;
  flex: 1;
}

.search-input-box {
  display: flex;
  align-items: center;
  background: #f1f5f9;
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 4px 12px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.search-input-box:focus-within {
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.search-icon {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
  margin-right: 6px;
  flex-shrink: 0;
}

.search-input {
  border: 1px solid var(--border-color);
  background: #f1f5f9;
  border-radius: 16px;
  padding: 4px 12px;
  outline: none;
  font-size: 0.82rem;
  color: var(--text-main);
  width: 100%;
  transition: all 0.2s;
}

.search-input:focus {
  border-color: var(--primary);
  background: #ffffff;
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.15);
}

.search-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  left: 0;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 420px;
  overflow-y: auto;
  display: none;
  z-index: 1050;
  padding: 8px 0;
}

.search-dropdown.active {
  display: block;
}

.search-result-item {
  padding: 10px 16px;
  display: block;
  border-bottom: 1px solid #f1f5f9;
  text-decoration: none;
  color: var(--text-main);
  transition: background 0.15s;
}

.search-result-item:hover {
  background: #f8fafc;
  text-decoration: none;
}

.search-result-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--text-navy);
}

.search-result-badge {
  font-size: 0.75rem;
  background: #e2e8f0;
  color: #475569;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 6px;
}

.search-result-snippet {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 4px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  color: var(--text-navy);
}

/* 页面主体 */
.main-content {
  padding: 24px 0 40px;
}

/* 页面标题区 */
.page-header-box {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  position: relative;
  border-left: 4px solid var(--text-navy);
}

.page-category-tag {
  display: inline-block;
  background: #e2e8f0;
  color: var(--text-navy);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

h1 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-navy);
  line-height: 1.35;
  margin-bottom: 8px;
}

.lead-text {
  font-size: 0.92rem;
  color: #475569;
  line-height: 1.65;
  max-width: 900px;
}

.page-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid #f1f5f9;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 章节层级 */
h2 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-navy);
  margin: 28px 0 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid #e2e8f0;
  position: relative;
}

h2::before {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 40px;
  height: 2px;
  background: var(--primary);
}

h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-navy);
  margin: 20px 0 8px;
}

p {
  margin-bottom: 12px;
  color: #334155;
}

/* 适合谁 / 场景框 */
.target-audience-box {
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 24px 0;
}

.target-audience-title {
  font-weight: 700;
  color: var(--text-navy);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.target-audience-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 10px;
}

.target-audience-list li {
  position: relative;
  padding-left: 20px;
  font-size: 0.92rem;
  color: #475569;
}

.target-audience-list li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--accent-amber);
  font-weight: bold;
}

/* 讲义双列步骤排版（Clash教程专用） */
.lecture-step-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
  margin: 28px 0;
}

.lecture-step-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1.6fr 1.1fr;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.lecture-step-card:hover {
  box-shadow: var(--shadow-md);
}

.step-main-col {
  padding: 28px 32px;
  border-right: 1px solid var(--border-color);
}

.step-header-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 800;
  background: #e0f2fe;
  color: #0369a1;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.step-aside-col {
  padding: 28px 24px;
  background: #fbfcfe;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  gap: 16px;
}

.verified-mark-box {
  background: var(--accent-amber-light);
  border: 1px solid var(--accent-amber-border);
  border-radius: var(--radius-md);
  padding: 16px;
}

.verified-mark-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #92400e;
  font-weight: 800;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

.verified-mark-desc {
  font-size: 0.88rem;
  color: #78350f;
  line-height: 1.6;
}

.step-checklist {
  list-style: none;
  font-size: 0.88rem;
  color: #475569;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step-checklist li {
  position: relative;
  padding-left: 20px;
}

.step-checklist li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* 表格与数据卡片 */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 24px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: #ffffff;
}

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

thead th {
  background: #f1f5f9;
  color: var(--text-navy);
  font-weight: 700;
  padding: 14px 16px;
  border-bottom: 2px solid var(--border-color);
  white-space: nowrap;
}

tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: #334155;
}

tbody tr:hover {
  background: #f8fafc;
}

/* 28家机场卡片列表 */
.airports-grid {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin: 32px 0;
}

.airport-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  position: relative;
  scroll-margin-top: 90px;
}

.airport-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid #f1f5f9;
}

.airport-name-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

.airport-seq {
  display: inline-block;
  background: #0f172a;
  color: #ffffff;
  font-size: 0.85rem;
  font-weight: 800;
  padding: 4px 8px;
  border-radius: 4px;
}

.airport-title {
  margin: 0;
  font-size: 1.4rem;
  color: var(--text-navy);
}

.airport-price-tag {
  font-size: 1.1rem;
  font-weight: 800;
  color: #b45309;
  background: #fef3c7;
  padding: 6px 14px;
  border-radius: 20px;
}

.airport-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.meta-badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
  background: #f1f5f9;
  color: #475569;
}

.meta-badge.promo {
  background: #fef3c7;
  color: #92400e;
  border: 1px solid #fde68a;
  font-weight: 700;
}

.meta-badge.protocol {
  background: #e0f2fe;
  color: #0369a1;
}

.airport-content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 24px;
  margin-top: 16px;
}

.airport-info-block {
  font-size: 0.95rem;
  color: #334155;
}

.airport-info-block h4 {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-navy);
  margin: 12px 0 6px;
}

.airport-side-block {
  background: #f8fafc;
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.promo-code-box {
  background: #ffffff;
  border: 1px dashed var(--accent-amber);
  border-radius: var(--radius-sm);
  padding: 10px;
  text-align: center;
  margin-bottom: 14px;
}

.promo-code-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
}

.promo-code-text {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--accent-amber);
  letter-spacing: 1px;
}

.btn-aff-cta {
  display: block;
  text-align: center;
  background: #0f172a;
  color: #ffffff !important;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s;
}

.btn-aff-cta:hover {
  background: var(--primary);
  text-decoration: none;
  transform: translateY(-1px);
}

.aff-disclaimer-small {
  font-size: 0.72rem;
  color: #94a3b8;
  text-align: center;
  margin-top: 8px;
  line-height: 1.4;
}

/* 提示与批注框 */
.callout {
  padding: 18px 22px;
  border-radius: var(--radius-md);
  margin: 22px 0;
  border-left: 4px solid;
  font-size: 0.95rem;
}

.callout.info {
  background: #f0f9ff;
  border-color: #0284c7;
  color: #0c4a6e;
}

.callout.warning {
  background: #fffbeb;
  border-color: #d97706;
  color: #78350f;
}

.callout.note {
  background: #f1f5f9;
  border-color: #64748b;
  color: #334155;
}

/* FAQ 模块 */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin: 28px 0;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  scroll-margin-top: 90px;
}

.faq-question {
  margin: 0 0 10px;
  font-size: 1.15rem;
  color: var(--text-navy);
  font-weight: 700;
}

.faq-answer {
  margin: 0;
  font-size: 0.95rem;
  color: #334155;
  line-height: 1.75;
}

/* 流程指引图 (首页) */
.roadmap-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin: 28px 0;
}

.roadmap-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  position: relative;
  border-top: 4px solid var(--primary);
}

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

.roadmap-title {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text-navy);
  margin-bottom: 8px;
}

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

/* 目录 (TOC) */
.page-toc {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0;
}

.toc-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-navy);
  margin-bottom: 12px;
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-list li a {
  font-size: 0.92rem;
  color: #475569;
}

.toc-list li a:hover {
  color: var(--primary);
}

/* 页脚 */
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 40px 0 24px;
  margin-top: 48px;
  border-top: 1px solid #1e293b;
  font-size: 0.88rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 28px;
}

.footer-brand-title {
  color: #ffffff;
  font-size: 1.15rem;
  font-weight: 800;
  margin-bottom: 10px;
}

.footer-brand-desc {
  color: #e2e8f0;
  line-height: 1.7;
  max-width: 480px;
  font-size: 0.86rem;
}

.footer-col-title {
  color: #ffffff;
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links li a {
  color: #cbd5e1;
  transition: color 0.15s ease;
}

.footer-links li a:hover {
  color: #38bdf8;
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.8rem;
  color: #94a3b8;
}

/* 响应式适配 (移动端) */
@media (max-width: 900px) {
  .header-inner {
    height: auto;
    padding: 12px 0;
    flex-wrap: wrap;
  }
  
  .nav-links {
    order: 3;
    width: 100%;
    overflow-x: auto;
    padding: 8px 0;
    -webkit-overflow-scrolling: touch;
  }
  
  .search-wrapper {
    order: 2;
    max-width: 100%;
    min-width: 160px;
  }

  .lecture-step-card {
    grid-template-columns: 1fr;
  }

  .step-main-col {
    border-right: none;
    border-bottom: 1px solid var(--border-color);
  }

  .airport-content-grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 600px) {
  h1 {
    font-size: 1.6rem;
  }

  h2 {
    font-size: 1.35rem;
  }

  .page-header-box {
    padding: 24px 20px;
  }

  .airport-card {
    padding: 20px;
  }
}

/* 全局强推“全球云”高转化通栏卡片 */
.featured-recommend-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: 1.5px solid #f59e0b;
  border-radius: var(--radius-md);
  padding: 18px 22px;
  color: #ffffff;
  margin: 18px 0;
  box-shadow: 0 4px 16px -2px rgba(245, 158, 11, 0.2);
  position: relative;
  overflow: hidden;
}

.featured-recommend-banner::after {
  content: "TOP 1 首推";
  position: absolute;
  top: 12px;
  right: -28px;
  background: #f59e0b;
  color: #0f172a;
  font-size: 0.7rem;
  font-weight: 800;
  padding: 3px 30px;
  transform: rotate(45deg);
  box-shadow: var(--shadow-sm);
}

.featured-banner-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.featured-badge {
  background: #f59e0b;
  color: #0f172a;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 4px;
}

.featured-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: #ffffff;
  margin: 0;
}

.featured-banner-desc {
  font-size: 0.88rem;
  color: #f1f5f9;
  line-height: 1.55;
  margin-bottom: 12px;
  max-width: 820px;
}

.featured-grid-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.featured-stat-box {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
}

.featured-stat-label {
  font-size: 0.72rem;
  color: #cbd5e1;
  display: block;
}

.featured-stat-val {
  font-size: 0.95rem;
  font-weight: 800;
  color: #fde68a;
}

.featured-action-row {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.btn-featured-cta {
  background: #f59e0b;
  color: #0f172a !important;
  font-weight: 800;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 0.85rem;
  text-decoration: none !important;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-featured-cta:hover {
  background: #fbbf24;
  transform: translateY(-1px);
  box-shadow: 0 3px 10px rgba(245, 158, 11, 0.35);
}

.featured-promo-pill {
  background: rgba(245, 158, 11, 0.15);
  border: 1px dashed #f59e0b;
  color: #fde68a;
  padding: 6px 12px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 700;
}

/* 主副标题层级 */
.main-subtitle {
  font-size: 0.92rem;
  color: #475569;
  line-height: 1.6;
  margin-top: 6px;
  margin-bottom: 10px;
  font-weight: 500;
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: -10px;
  margin-bottom: 20px;
}

/* 并行图文排版 */
.parallel-content-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin: 24px 0;
}

@media (max-width: 768px) {
  .parallel-content-row {
    grid-template-columns: 1fr;
  }
}

/* 测评卡片强化 */
.review-card-full {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 20px;
  scroll-margin-top: 90px;
}

.review-badge-top {
  display: inline-block;
  background: #e0f2fe;
  color: #0369a1;
  font-weight: 800;
  font-size: 0.8rem;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.pro-con-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 16px 0;
}

@media (max-width: 600px) {
  .pro-con-grid {
    grid-template-columns: 1fr;
  }
}

.pro-box {
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-sm);
  padding: 14px;
  font-size: 0.88rem;
  color: #166534;
}

.con-box {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  padding: 14px;
  font-size: 0.88rem;
  color: #92400e;
}

/* 小导航 (Sub-navigation Pills) */
.subnav-container {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px 18px;
  margin: 24px 0 32px;
  box-shadow: var(--shadow-sm);
}

.subnav-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.subnav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.subnav-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 600;
  color: #334155;
  background: #f1f5f9;
  border: 1px solid #e2e8f0;
  text-decoration: none !important;
  transition: all 0.2s ease;
}

.subnav-pill:hover {
  background: #e2e8f0;
  color: var(--primary);
  border-color: #cbd5e1;
  transform: translateY(-1px);
}

.subnav-pill.active {
  background: #0f172a;
  color: #ffffff !important;
  border-color: #0f172a;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.15);
}

/* 顶部主导航下拉菜单 (Dropdown) */
.nav-dropdown {
  position: relative;
  display: inline-block;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  display: block;
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 230px;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.15);
  padding: 8px 0;
  margin-top: 4px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s, transform 0.2s, visibility 0.2s;
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #334155;
  text-decoration: none !important;
  transition: background 0.15s, color 0.15s;
}

.nav-dropdown-item:hover {
  background: #f8fafc;
  color: var(--primary);
}

.nav-dropdown-item.active {
  color: var(--primary);
  background: #f0f9ff;
  font-weight: 700;
}

/* ==========================================================================
   全站移动端深度极致适配优化 (Mobile First & Touch UX Optimization)
   覆盖 iPhone / Android / iPad 各尺寸屏幕，优化滑动导航、防自动缩放与大触控区域
   ========================================================================== */

@media (max-width: 860px) {
  /* 顶部导航与搜索栏流式重构 */
  .site-header {
    height: auto !important;
    padding: 6px 0;
  }

  .header-inner {
    height: auto !important;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    padding: 6px 0 !important;
  }

  .site-logo {
    font-size: 1.05rem;
  }

  /* 移动端搜索框：16px 防 iOS 自动放大 */
  .search-wrapper {
    order: 2;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
  }

  .search-input {
    font-size: 16px !important;
    height: 38px;
    padding: 6px 14px;
    border-radius: 19px;
  }

  /* 移动端主导航：横向顺滑原生级胶囊条 */
  .nav-links {
    order: 3;
    width: 100% !important;
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    gap: 6px !important;
    padding: 4px 2px 6px !important;
    margin: 0 !important;
  }

  .nav-links::-webkit-scrollbar {
    display: none !important;
  }

  .nav-link {
    flex-shrink: 0 !important;
    padding: 6px 13px !important;
    font-size: 0.82rem !important;
    border-radius: 16px !important;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    white-space: nowrap !important;
  }

  .nav-link.active {
    background: #0f172a !important;
    color: #ffffff !important;
    border-color: #0f172a !important;
  }

  .nav-dropdown {
    flex-shrink: 0 !important;
    display: inline-flex !important;
  }

  .nav-dropdown-menu {
    position: absolute;
    left: 0;
    top: 100%;
    min-width: 220px;
    max-width: 280px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
  }
}

@media (max-width: 640px) {
  /* 全局容器与版面边距优化 */
  .site-container,
  .container {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }

  /* 移动端标题与文本层级 */
  h1, .main-title {
    font-size: 1.25rem !important;
    line-height: 1.35 !important;
    margin-bottom: 6px !important;
  }

  h2, .section-title {
    font-size: 1.12rem !important;
    line-height: 1.4 !important;
  }

  h3 {
    font-size: 0.98rem !important;
  }

  .page-header-box {
    padding: 16px 14px !important;
    margin-bottom: 16px !important;
  }

  .main-subtitle, .lead-text {
    font-size: 0.84rem !important;
    line-height: 1.6 !important;
  }

  /* 强力推荐“全球云”通栏卡片移动端优化 */
  .featured-recommend-banner {
    padding: 16px 14px !important;
    margin: 14px 0 !important;
  }

  .featured-recommend-banner::after {
    font-size: 0.65rem !important;
    padding: 2px 24px !important;
    top: 10px !important;
    right: -24px !important;
  }

  .featured-title {
    font-size: 1.02rem !important;
    line-height: 1.35 !important;
  }

  .featured-banner-desc {
    font-size: 0.82rem !important;
    line-height: 1.55 !important;
    margin-bottom: 10px !important;
  }

  /* 核心数据在手机上排列为 2x2 网格，避免单列过长或拥挤 */
  .featured-grid-row {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 6px !important;
    margin-bottom: 12px !important;
  }

  .featured-stat-box {
    padding: 6px 8px !important;
    text-align: center;
  }

  .featured-stat-label {
    font-size: 0.68rem !important;
  }

  .featured-stat-val {
    font-size: 0.9rem !important;
  }

  /* 行动按钮全宽大触控区，提升手机点击率 */
  .featured-action-row {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 8px !important;
  }

  .btn-featured-cta {
    width: 100% !important;
    min-height: 44px !important;
    justify-content: center !important;
    text-align: center !important;
    font-size: 0.9rem !important;
    box-sizing: border-box !important;
  }

  .featured-promo-pill {
    width: 100% !important;
    text-align: center !important;
    box-sizing: border-box !important;
    display: block !important;
    font-size: 0.78rem !important;
  }

  /* 细分子导航胶囊条：手机端原生横滑 */
  .subnav-container,
  .filter-container {
    padding: 10px 12px !important;
    margin: 16px 0 20px !important;
  }

  .filter-system-buttons {
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    padding-bottom: 4px !important;
    gap: 6px !important;
  }

  .filter-system-buttons::-webkit-scrollbar {
    display: none !important;
  }

  .filter-system-buttons .filter-btn {
    flex-shrink: 0 !important;
  }

  .subnav-pills {
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    gap: 6px !important;
    padding: 2px 0 4px !important;
  }

  .subnav-pills::-webkit-scrollbar {
    display: none !important;
  }

  .subnav-pill {
    flex-shrink: 0 !important;
    font-size: 0.76rem !important;
    padding: 5px 10px !important;
  }

  /* 机场评测卡片与通用卡片手机端全宽紧凑 */
  .airport-card,
  .review-card-full,
  .tutorial-card-full,
  .client-card {
    padding: 16px 14px !important;
    margin-bottom: 18px !important;
    border-radius: var(--radius-md) !important;
  }

  /* 教程步骤手机端紧凑内边距 */
  .lecture-step-card {
    padding: 16px 14px !important;
  }

  /* 优缺点对比在手机端转单列 */
  .pro-con-grid {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }

  .pro-box, .con-box {
    padding: 10px 12px !important;
    font-size: 0.84rem !important;
  }

  /* 客户端下载按钮在手机端全宽易点击 */
  .client-buttons-grid {
    grid-template-columns: 1fr !important;
    gap: 8px !important;
  }

  .client-download-btn {
    width: 100% !important;
    min-height: 44px !important;
    box-sizing: border-box !important;
    padding: 8px 12px !important;
  }

  .client-meta-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 6px !important;
    padding: 10px 12px !important;
  }

  .client-title-row {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 6px !important;
  }

  /* 教程页分类筛选按钮手机端横滑 */
  #platformFilterBar {
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    scrollbar-width: none !important;
    padding-bottom: 4px !important;
    gap: 6px !important;
  }

  #platformFilterBar::-webkit-scrollbar {
    display: none !important;
  }

  #platformFilterBar .filter-btn {
    flex-shrink: 0 !important;
    font-size: 0.8rem !important;
    padding: 5px 12px !important;
  }

  /* 目录索引手机单列 */
  .toc-list {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
    font-size: 0.84rem !important;
  }

  /* 常见问题 (FAQ) 手机端触控优化 */
  .faq-question-btn {
    padding: 14px 16px !important;
    font-size: 0.92rem !important;
    min-height: 44px;
  }

  .faq-answer-content {
    padding: 14px 16px !important;
    font-size: 0.86rem !important;
  }

  /* 页脚手机端整齐两列与居中版权 */
  .site-footer {
    padding: 24px 0 20px !important;
  }

  .footer-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .footer-links {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 6px 12px !important;
  }

  .footer-bottom {
    flex-direction: column !important;
    text-align: center !important;
    gap: 8px !important;
    font-size: 0.75rem !important;
  }
}