/* ==========================================================================
   VPN机场对照站 (vpn-jichang.blog) - 核心样式表
   视觉定位：双色对照手册（柔紫概念区 #6b21a8 + 浅赭服务资料区 #b45309）
   ========================================================================== */

:root {
  --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, monospace;

  /* 主色调与背景 */
  --bg-main: #ffffff;
  --bg-subtle: #f8fafc;
  --bg-muted: #f1f5f9;
  --border-color: #e2e8f0;
  --border-dark: #cbd5e1;

  /* 文字颜色 */
  --text-main: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  /* 柔紫色概念区 (名称、技术原理、服务概念) */
  --purple-main: #6b21a8;
  --purple-hover: #581c87;
  --purple-bg: #faf5ff;
  --purple-border: #e9d5ff;
  --purple-tag: #7e22ce;

  /* 浅赭色服务资料区 (价格、购买、套餐、商业关系) */
  --ochre-main: #b45309;
  --ochre-hover: #92400e;
  --ochre-bg: #fffbeb;
  --ochre-border: #fde68a;
  --ochre-tag: #d97706;

  /* 辅色与状态色 */
  --green-main: #15803d;
  --green-bg: #f0fdf4;
  --green-border: #bbf7d0;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.07), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.08), 0 4px 6px -4px rgb(0 0 0 / 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --max-w: 1160px;
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-main);
  background-color: var(--bg-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--purple-main);
  text-decoration: none;
  transition: color 0.15s ease, opacity 0.15s ease;
}

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

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* ==========================================================================
   页眉与主导航
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none !important;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.nav-and-search {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.main-nav ul {
  display: flex;
  list-style: none;
  align-items: center;
  gap: 0.35rem;
}

.nav-link {
  display: inline-block;
  padding: 0.45rem 0.8rem;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  transition: all 0.15s ease;
}

.nav-link:hover {
  background-color: var(--bg-muted);
  color: var(--text-main);
}

.nav-link.active {
  background-color: var(--purple-bg);
  color: var(--purple-main);
  font-weight: 600;
}

/* 突出显示机场推荐导航项 */
.nav-link-featured {
  background: linear-gradient(135deg, #7e22ce, #6b21a8);
  color: #ffffff !important;
  font-weight: 600;
  box-shadow: 0 2px 4px rgba(107, 33, 168, 0.2);
}

.nav-link-featured:hover {
  background: linear-gradient(135deg, #6b21a8, #581c87);
  box-shadow: 0 3px 6px rgba(107, 33, 168, 0.3);
}

/* 导航下拉菜单组件 */
.nav-dropdown-wrapper {
  position: relative;
}

.nav-dropdown-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  cursor: pointer;
}

.nav-dropdown-arrow {
  width: 10px;
  height: 10px;
  transition: transform 0.2s ease;
  fill: currentColor;
}

.nav-dropdown-wrapper:hover .nav-dropdown-arrow,
.nav-dropdown-wrapper:focus-within .nav-dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
  padding: 0.4rem 0;
  display: none;
  flex-direction: column;
  z-index: 120;
}

.nav-dropdown-wrapper:hover .nav-dropdown-menu,
.nav-dropdown-wrapper:focus-within .nav-dropdown-menu {
  display: flex;
}

.nav-dropdown-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none !important;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.nav-dropdown-item:hover {
  background-color: var(--purple-bg);
  color: var(--purple-main);
}

.nav-dropdown-item.active {
  background-color: var(--purple-bg);
  color: var(--purple-main);
  font-weight: 600;
}

/* VPN推荐场景子导航标签栏 */
.vpn-recommend-subnav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.85rem 1.15rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 2rem;
}

.subnav-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--purple-main);
  margin-right: 0.35rem;
}

.subnav-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  text-decoration: none !important;
  transition: all 0.15s ease;
}

.subnav-pill:hover {
  border-color: var(--purple-border);
  color: var(--purple-main);
  background-color: var(--purple-bg);
}

.subnav-pill.active {
  background-color: var(--purple-main);
  border-color: var(--purple-main);
  color: #ffffff !important;
  font-weight: 600;
  box-shadow: 0 2px 4px rgba(107, 33, 168, 0.2);
}

/* 页眉搜索框 */
.header-search {
  position: relative;
}

.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.85rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.search-trigger-btn:hover {
  border-color: var(--purple-border);
  background-color: #ffffff;
  color: var(--text-main);
  box-shadow: 0 0 0 2px rgba(126, 34, 206, 0.08);
}

.search-icon {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.search-kbd {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.1rem 0.35rem;
  background-color: var(--bg-muted);
  border: 1px solid var(--border-dark);
  border-radius: 4px;
  color: var(--text-secondary);
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.4rem;
  cursor: pointer;
  color: var(--text-main);
}

/* ==========================================================================
   页面容器与布局
   ========================================================================== */

.site-main {
  flex: 1;
  max-width: var(--max-w);
  width: 100%;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

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

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

.breadcrumb-separator {
  color: var(--border-dark);
}

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

/* 页面头屏 (Hero / Title Block) */
.page-header {
  margin-bottom: 2.25rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--border-color);
}

.page-badge-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-purple {
  background-color: var(--purple-bg);
  color: var(--purple-main);
  border: 1px solid var(--purple-border);
}

.badge-ochre {
  background-color: var(--ochre-bg);
  color: var(--ochre-main);
  border: 1px solid var(--ochre-border);
}

.badge-green {
  background-color: var(--green-bg);
  color: var(--green-main);
  border: 1px solid var(--green-border);
}

.page-title {
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 0.75rem;
}

.page-lead {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 900px;
}

.page-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1rem;
}

/* ==========================================================================
   页面内目录 (Table of Contents)
   ========================================================================== */

.inpage-toc {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2.5rem;
}

.toc-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.toc-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0.4rem 1.5rem;
}

.toc-list a {
  font-size: 0.875rem;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.toc-list a:hover {
  color: var(--purple-main);
}

.toc-list a::before {
  content: "•";
  color: var(--purple-main);
  font-weight: bold;
}

/* ==========================================================================
   标题与排版规则 (遵循每题独立分行与空行)
   ========================================================================== */

.content-section {
  margin-bottom: 3rem;
}

h2.section-heading {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.35;
  margin: 2.25rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h2.section-heading.heading-purple {
  border-bottom-color: var(--purple-border);
}

h2.section-heading.heading-ochre {
  border-bottom-color: var(--ochre-border);
}

h3.sub-heading {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 1.75rem 0 0.75rem;
  line-height: 1.4;
}

p {
  margin-bottom: 1.15rem;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* ==========================================================================
   双色对照模块 (柔紫概念区 VS 浅赭服务资料区)
   ========================================================================== */

.dual-compare-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0 2rem;
}

.compare-card {
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid;
}

.compare-card.card-concept {
  background-color: var(--purple-bg);
  border-color: var(--purple-border);
}

.compare-card.card-data {
  background-color: var(--ochre-bg);
  border-color: var(--ochre-border);
}

.compare-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
}

.card-concept .compare-tag {
  background-color: var(--purple-main);
  color: #ffffff;
}

.card-data .compare-tag {
  background-color: var(--ochre-main);
  color: #ffffff;
}

.compare-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.compare-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.compare-list li {
  margin-bottom: 0.5rem;
  padding-left: 1.25rem;
  position: relative;
}

.compare-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  font-weight: bold;
}

.card-concept .compare-list li::before {
  color: var(--purple-main);
}

.card-data .compare-list li::before {
  color: var(--ochre-main);
}

/* 通用双栏与卡片网格 */
.grid-2-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.two-col-compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0 2rem;
}

.concept-col {
  border-radius: var(--radius-md);
  padding: 1.5rem;
  border: 1px solid;
}

.concept-col.concept-purple {
  background-color: var(--purple-bg);
  border-color: var(--purple-border);
}

.concept-col.concept-ochre {
  background-color: var(--ochre-bg);
  border-color: var(--ochre-border);
}

.concept-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.card {
  background-color: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ==========================================================================
   提示框 (Callouts / Alerts)
   ========================================================================== */

.callout {
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  border-left: 4px solid;
  font-size: 0.925rem;
  line-height: 1.65;
}

.callout-purple {
  background-color: var(--purple-bg);
  border-left-color: var(--purple-main);
  color: var(--text-secondary);
}

.callout-ochre {
  background-color: var(--ochre-bg);
  border-left-color: var(--ochre-main);
  color: var(--text-secondary);
}

.callout-title {
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ==========================================================================
   数据表格与横向滚动
   ========================================================================== */

.table-wrapper {
  overflow-x: auto;
  margin: 1.5rem 0 2rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  background-color: #ffffff;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
  white-space: nowrap;
}

.data-table th,
.data-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  background-color: var(--bg-subtle);
  font-weight: 600;
  color: var(--text-main);
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
}

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

.data-table tbody tr:hover {
  background-color: #f8fafc;
}

.data-table td.td-highlight {
  font-weight: 600;
  color: var(--ochre-main);
}

/* ==========================================================================
   机场推荐卡片 (28家机场专属档案)
   ========================================================================== */

.airport-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 2.25rem;
  background-color: #ffffff;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
  scroll-margin-top: 5rem;
}

.airport-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-dark);
}

.airport-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.airport-title-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.airport-num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--purple-main);
  font-weight: 700;
}

.airport-name {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.airport-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.airport-price-box {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.5rem;
}

.price-display {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.price-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.price-amount {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--ochre-main);
}

.btn-aff-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  background-color: var(--ochre-main);
  color: #ffffff !important;
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.55rem 1.15rem;
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  transition: all 0.15s ease;
  box-shadow: 0 2px 4px rgba(180, 83, 9, 0.2);
}

.btn-aff-cta:hover {
  background-color: var(--ochre-hover);
  box-shadow: 0 4px 6px rgba(180, 83, 9, 0.3);
}

.airport-coupon-box {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--ochre-bg);
  border: 1px dashed var(--ochre-border);
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 1.25rem;
}

.coupon-code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--ochre-main);
  background-color: #ffffff;
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--ochre-border);
  border-radius: 4px;
}

.coupon-note {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.airport-details-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

.detail-block {
  background-color: var(--bg-subtle);
  border-radius: var(--radius-sm);
  padding: 1rem;
}

.detail-block-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.detail-block-content {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.detail-block-content p {
  margin-bottom: 0.5rem;
}

.detail-block-content p:last-child {
  margin-bottom: 0;
}

.airport-verify-box {
  background-color: #f8fafc;
  border-left: 3px solid var(--text-muted);
  padding: 0.75rem 1rem;
  font-size: 0.825rem;
  color: var(--text-muted);
  line-height: 1.5;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* 推荐文章机场规格信息网格与操作按钮 */
.airport-grid-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem 1.25rem;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin: 1rem 0;
}

.airport-grid-info .info-item {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  font-size: 0.875rem;
  line-height: 1.5;
}

.airport-grid-info .info-label {
  font-weight: 700;
  color: var(--text-secondary);
  white-space: nowrap;
  flex-shrink: 0;
}

.airport-grid-info .info-value {
  color: var(--text-main);
  word-break: break-word;
}

.airport-card-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.showcase-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   FAQ 专题样式
   ========================================================================== */

.faq-group {
  margin-bottom: 2.5rem;
}

.faq-item {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  padding: 1.25rem 1.5rem;
  background-color: #ffffff;
  scroll-margin-top: 5rem;
}

.faq-question {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.65rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.faq-q-mark {
  color: var(--purple-main);
  font-weight: 800;
  flex-shrink: 0;
}

.faq-answer {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
}

.faq-answer p {
  margin-bottom: 0.65rem;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

/* ==========================================================================
   页脚与合规链接
   ========================================================================== */

.site-footer {
  margin-top: auto;
  background-color: var(--bg-subtle);
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.25rem 2rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2rem;
}

.footer-col-brand .footer-brand-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.footer-col-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

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

.footer-links a:hover {
  color: var(--purple-main);
}

.footer-bottom {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
}

.footer-disclosure {
  background-color: var(--bg-muted);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--text-muted);
}

/* ==========================================================================
   全站搜索弹窗 (Modal)
   ========================================================================== */

.search-modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 200;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1rem 2rem;
}

.search-modal-backdrop.is-open {
  display: flex;
}

.search-modal {
  width: 100%;
  max-width: 620px;
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  animation: modalFadeIn 0.18s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: translateY(-12px) scale(0.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--bg-subtle);
}

.search-input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-size: 1.05rem;
  color: var(--text-main);
  font-family: inherit;
}

.search-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
}

.search-close-btn:hover {
  color: var(--text-main);
}

.search-results-area {
  max-height: 420px;
  overflow-y: auto;
  padding: 0.75rem;
}

.search-results-group {
  margin-bottom: 0.75rem;
}

.search-group-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
  padding: 0.35rem 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.search-result-item {
  display: block;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-main);
  text-decoration: none !important;
  transition: background-color 0.1s ease;
}

.search-result-item:hover,
.search-result-item:focus {
  background-color: var(--purple-bg);
}

.search-item-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.15rem;
}

.search-item-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.search-empty-state {
  padding: 2.5rem 1rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}



/* ==========================================================================
   全站置顶强曝光栏 (全球云特惠公告 - 确保单行严格并行)
   ========================================================================== */

.site-announcement-bar {
  background: linear-gradient(90deg, #581c87 0%, #7e22ce 50%, #92400e 100%);
  color: #ffffff;
  padding: 0.45rem 1.25rem;
  font-size: 0.85rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 101;
  width: 100%;
}

.announcement-inner {
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap !important; /* 确保严格并行，绝不折行 */
  gap: 1rem;
}

.announcement-text {
  display: flex;
  align-items: center;
  flex-wrap: nowrap !important; /* 确保文字与徽章严格并行 */
  white-space: nowrap !important;
  gap: 0.65rem;
  line-height: 1.4;
  min-width: 0;
  flex: 1 1 auto;
}

.announcement-badge {
  background: #fef08a;
  color: #854d0e;
  font-weight: 800;
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.announcement-code {
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.4);
  padding: 0.1rem 0.45rem;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #fef08a;
  letter-spacing: 0.05em;
  white-space: nowrap;
  flex-shrink: 0;
}

.announcement-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  white-space: nowrap !important;
}

.announcement-btn {
  background-color: #ffffff;
  color: #7e22ce !important;
  font-weight: 700;
  font-size: 0.8rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  text-decoration: none !important;
  transition: all 0.15s ease;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
}

.announcement-btn:hover {
  background-color: #fef08a;
  color: #854d0e !important;
  transform: translateY(-1px);
}

.announcement-link {
  color: #e9d5ff;
  font-size: 0.8rem;
  text-decoration: underline;
  white-space: nowrap;
  flex-shrink: 0;
}

.announcement-link:hover {
  color: #ffffff;
}

/* ==========================================================================
   首页全球云专属高曝光展板 (Featured Showcase Card)
   ========================================================================== */

.featured-showcase-box {
  background: linear-gradient(145deg, #ffffff 0%, #faf5ff 55%, #fffbeb 100%);
  border: 2px solid #d8b4fe;
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin: 2.25rem 0;
  box-shadow: 0 10px 25px -5px rgba(126, 34, 206, 0.12), 0 8px 10px -6px rgba(180, 83, 9, 0.08);
  position: relative;
  overflow: hidden;
}

.featured-showcase-box::before {
  content: "★ 本站核心推荐方案 · 综合优选";
  position: absolute;
  top: 0;
  right: 0;
  background: linear-gradient(90deg, #7e22ce, #b45309);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.35rem 1.25rem;
  border-bottom-left-radius: var(--radius-md);
  letter-spacing: 0.04em;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.showcase-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(216, 180, 254, 0.4);
}

.showcase-title-area {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.showcase-badge-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.showcase-brand-name {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.showcase-tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.showcase-price-tag {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.25rem;
}

.showcase-original-price {
  font-size: 0.85rem;
  color: var(--text-muted);
  text-decoration: line-through;
}

.showcase-discount-price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
}

.showcase-price-amount {
  font-size: 1.75rem;
  font-weight: 900;
  color: var(--ochre-main);
  line-height: 1;
}

.showcase-coupon-highlight {
  background-color: #ffffff;
  border: 1.5px dashed #d97706;
  border-radius: var(--radius-md);
  padding: 0.85rem 1.25rem;
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  box-shadow: 0 2px 4px rgba(217, 119, 6, 0.05);
}

.showcase-coupon-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.coupon-big-code {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 800;
  color: #b45309;
  background-color: #fffbeb;
  padding: 0.25rem 0.75rem;
  border: 1px solid #fde68a;
  border-radius: var(--radius-sm);
  letter-spacing: 0.05em;
}

.showcase-feature-points {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.feature-point-card {
  background-color: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(216, 180, 254, 0.5);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
}

.feature-point-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--purple-main);
  margin-bottom: 0.35rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.feature-point-desc {
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.showcase-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-showcase-primary {
  background: linear-gradient(135deg, #d97706 0%, #b45309 100%);
  color: #ffffff !important;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 4px 10px rgba(180, 83, 9, 0.3);
  transition: all 0.15s ease;
}

.btn-showcase-primary:hover {
  background: linear-gradient(135deg, #b45309 0%, #92400e 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(180, 83, 9, 0.4);
}

.btn-showcase-secondary {
  background-color: var(--purple-bg);
  color: var(--purple-main) !important;
  border: 1px solid var(--purple-border);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  text-decoration: none !important;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s ease;
}

.btn-showcase-secondary:hover {
  background-color: #f3e8ff;
  border-color: #c084fc;
}

.showcase-disclaimer {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
  line-height: 1.4;
}

/* 高亮增强卡片 (用于推荐页卡片 #14) */
.airport-card-featured {
  border: 2px solid #c084fc !important;
  background: linear-gradient(180deg, #faf5ff 0%, #ffffff 40%) !important;
  box-shadow: 0 6px 16px -2px rgba(126, 34, 206, 0.15) !important;
}

/* ==========================================================================
   响应式断点与移动端深度适配 (Responsive Media Queries)
   ========================================================================== */

@media (max-width: 868px) {
  /* 1. 全球云置顶特惠条在移动端优雅堆叠，不横向溢出 */
  .site-announcement-bar {
    padding: 0.55rem 0.85rem;
  }

  .announcement-inner {
    flex-direction: column !important;
    align-items: flex-start !important;
    flex-wrap: wrap !important;
    gap: 0.5rem !important;
  }

  .announcement-text {
    flex-wrap: wrap !important;
    white-space: normal !important;
    gap: 0.4rem !important;
    line-height: 1.45 !important;
    font-size: 0.825rem !important;
  }

  .announcement-badge {
    font-size: 0.7rem !important;
    padding: 0.15rem 0.45rem !important;
  }

  .announcement-code {
    font-size: 0.8rem !important;
    padding: 0.1rem 0.35rem !important;
  }

  .announcement-actions {
    width: 100% !important;
    justify-content: flex-start !important;
    gap: 0.6rem !important;
    flex-wrap: wrap !important;
  }

  .announcement-btn {
    padding: 0.35rem 0.85rem !important;
    font-size: 0.8rem !important;
  }

  .announcement-link {
    font-size: 0.8rem !important;
  }

  /* 2. 页眉与导航抽屉 */
  .header-inner {
    flex-wrap: wrap;
    position: relative;
    padding: 0.75rem 0;
  }

  .nav-and-search {
    display: contents; /* 将子项提升到 header-inner 直接排布 */
  }

  .brand-link {
    order: 1;
    max-width: calc(100% - 110px);
  }

  .header-search {
    order: 2;
    margin-left: auto;
  }

  .mobile-menu-toggle {
    order: 3;
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .main-nav {
    display: none;
    width: 100%;
    order: 4;
    padding-top: 0.75rem;
    margin-top: 0.5rem;
    border-top: 1px solid var(--border-color);
  }

  .main-nav.is-mobile-open {
    display: block;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0.35rem;
  }

  .nav-link {
    display: block;
    padding: 0.65rem 0.85rem;
    font-size: 0.95rem;
  }

  /* 移动端菜单中的“好用的VPN推荐”下拉直接展开展示，触屏免悬停 */
  .nav-dropdown-wrapper .nav-dropdown-menu {
    position: static !important;
    display: flex !important;
    box-shadow: none !important;
    border: 1px solid var(--purple-border) !important;
    border-radius: var(--radius-sm) !important;
    background-color: var(--purple-bg) !important;
    margin: 0.35rem 0 0.5rem 0.75rem !important;
    padding: 0.35rem 0 !important;
    width: auto !important;
  }

  .nav-dropdown-item {
    padding: 0.55rem 0.85rem !important;
    font-size: 0.85rem !important;
    white-space: normal !important;
    line-height: 1.4 !important;
  }

  .nav-dropdown-arrow {
    transform: rotate(180deg);
  }

  /* 3. VPN推荐场景子导航横向滑块 */
  .vpn-recommend-subnav {
    flex-wrap: nowrap !important;
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    padding: 0.65rem 0.85rem !important;
    gap: 0.5rem !important;
    scrollbar-width: none !important;
    -ms-overflow-style: none !important;
    margin-bottom: 1.5rem !important;
  }

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

  .subnav-label {
    flex-shrink: 0 !important;
    font-size: 0.825rem !important;
    white-space: nowrap !important;
  }

  .subnav-pill {
    flex-shrink: 0 !important;
    white-space: nowrap !important;
    font-size: 0.825rem !important;
    padding: 0.35rem 0.75rem !important;
  }

  /* 4. 双栏与网格降为单列 */
  .dual-compare-grid,
  .two-col-compare,
  .grid-2-col,
  .airport-details-grid,
  .footer-inner {
    grid-template-columns: 1fr !important;
    gap: 1.25rem !important;
  }

  .page-title {
    font-size: 1.6rem;
  }

  .airport-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .airport-price-box {
    align-items: flex-start;
    width: 100%;
    flex-direction: row;
    justify-content: space-between;
  }

  /* 机场卡片规格信息在平板/手机端优化 */
  .airport-grid-info {
    grid-template-columns: 1fr;
    gap: 0.6rem;
    padding: 0.85rem 1rem;
  }

  /* 5. 数据表格横向平滑滚动 */
  .table-wrapper {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    margin: 1rem 0 1.5rem !important;
  }

  /* 6. 搜索弹窗移动端适配 */
  .search-modal-backdrop {
    padding: 1.5rem 0.75rem 1rem !important;
  }

  .search-results-area {
    max-height: 60vh !important;
  }
}

@media (max-width: 640px) {
  .site-main {
    padding: 1.25rem 0.85rem 3rem !important;
  }

  .page-title {
    font-size: 1.4rem !important;
    line-height: 1.3 !important;
  }

  .page-lead {
    font-size: 0.925rem !important;
  }

  /* 移动窄屏隐藏搜索框长文字，仅显示放大镜图标，保证极窄屏不挤占品牌标 */
  .header-search .search-trigger-btn span {
    display: none !important;
  }

  .header-search .search-trigger-btn {
    padding: 0.5rem !important;
    border-radius: var(--radius-full) !important;
  }

  /* 首页高曝光展板在手机端的排版 */
  .featured-showcase-box {
    padding: 1.5rem 1rem 1.25rem !important;
    margin: 1.5rem 0 !important;
  }

  .showcase-header {
    flex-direction: column !important;
    align-items: flex-start !important;
    gap: 0.75rem !important;
  }

  .showcase-brand-name {
    font-size: 1.35rem !important;
  }

  .showcase-price-tag {
    align-items: flex-start !important;
  }

  .showcase-price-amount {
    font-size: 1.5rem !important;
  }

  .showcase-coupon-highlight {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.75rem !important;
    padding: 0.75rem 1rem !important;
  }

  .showcase-coupon-left {
    flex-direction: column !important;
    align-items: center !important;
    gap: 0.4rem !important;
  }

  .coupon-big-code {
    width: 100% !important;
    text-align: center !important;
    font-size: 1.1rem !important;
  }

  /* 按钮在窄屏下全宽触控，避免误触 */
  .showcase-actions,
  .airport-card-actions {
    flex-direction: column !important;
    align-items: stretch !important;
    width: 100% !important;
    gap: 0.6rem !important;
  }

  .showcase-actions .btn-showcase-primary,
  .showcase-actions .btn-showcase-secondary,
  .airport-card-actions .btn,
  .airport-card-actions .btn-coupon-copy {
    width: 100% !important;
    justify-content: center !important;
    text-align: center !important;
    padding: 0.65rem 1rem !important;
    font-size: 0.9rem !important;
  }

  .showcase-feature-points {
    grid-template-columns: 1fr !important;
    gap: 0.75rem !important;
  }

  /* 页内目录单列 */
  .inpage-toc {
    padding: 1rem !important;
  }

  .toc-list {
    grid-template-columns: 1fr !important;
    gap: 0.5rem !important;
  }

  /* 页面元信息 */
  .page-meta {
    gap: 0.5rem 1rem !important;
    font-size: 0.8rem !important;
  }
}