/* ==========================================================================
   加速器导航 (jiasuqi-daohang.blog) - 核心样式表
   视觉定位：明亮灰白底、深蓝灰正文、蓝色 VPN/机场标识、橙色游戏加速标识
   ========================================================================== */

:root {
  --bg-primary: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f1f5f9;
  --text-main: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --border-hover: #cbd5e1;

  /* VPN & 机场 Theme (Blue/Cyan) */
  --vpn-color: #0284c7;
  --vpn-bg: #e0f2fe;
  --vpn-border: #bae6fd;
  --vpn-hover: #0369a1;

  /* 游戏加速器 Theme (Orange/Amber) */
  --game-color: #ea580c;
  --game-bg: #ffedd5;
  --game-border: #fed7aa;
  --game-hover: #c2410c;

  /* Neutrals & UI */
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;

  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --max-w: 1200px;
  --header-h: 70px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-body);
  line-height: 1.68;
  scroll-behavior: smooth;
  scroll-padding-top: 85px;
  -webkit-font-smoothing: antialiased;
}

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

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

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

img, svg {
  vertical-align: middle;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: var(--header-h);
}

.header-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text-main);
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
}

.brand-title {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-size: 1.15rem;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.brand-desc {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-link {
  padding: 0.5rem 0.85rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-body);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.nav-link:hover {
  background-color: var(--bg-surface-alt);
  color: var(--text-main);
  text-decoration: none;
}

.nav-link.active {
  background-color: #eff6ff;
  color: var(--primary);
  font-weight: 600;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.search-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 0.9rem;
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.search-trigger:hover {
  border-color: var(--primary);
  background-color: #ffffff;
  color: var(--text-main);
}

.search-trigger kbd {
  font-size: 0.72rem;
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 4px;
  padding: 1px 5px;
  font-family: inherit;
  box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  cursor: pointer;
  color: var(--text-main);
}

/* ==========================================================================
   Layout & Container
   ========================================================================== */

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

.content-wrapper {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.with-toc {
  grid-template-columns: minmax(0, 1fr) 280px;
}

/* ==========================================================================
   Typography & Headers
   ========================================================================== */

h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.015em;
}

h1 {
  font-size: 2rem;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: 1.45rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h3 {
  font-size: 1.18rem;
  margin-top: 1.75rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1.15rem;
  font-size: 1rem;
  color: var(--text-body);
}

ul, ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.4rem;
}

/* Badges & Tags */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.65rem;
  font-size: 0.78rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  line-height: 1.2;
}

.tag-vpn {
  background-color: var(--vpn-bg);
  color: var(--vpn-color);
  border: 1px solid var(--vpn-border);
}

.tag-game {
  background-color: var(--game-bg);
  color: var(--game-color);
  border: 1px solid var(--game-border);
}

.tag-check {
  background-color: #f1f5f9;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
}

.tag-verified {
  background-color: #dcfce7;
  color: #15803d;
  border: 1px solid #bbf7d0;
}

/* ==========================================================================
   Component: Callouts & Cards
   ========================================================================== */

.hero-box {
  background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--text-main);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.target-audience-box {
  background-color: #f8fafc;
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0 2rem;
  border-top: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.target-audience-box h4 {
  font-size: 1rem;
  margin-bottom: 0.6rem;
  color: var(--text-main);
}

.cta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.75rem 0;
}

.cta-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  display: flex;
  flex-direction: column;
}

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

.cta-card.vpn-card:hover {
  border-color: var(--vpn-color);
}

.cta-card.game-card:hover {
  border-color: var(--game-color);
}

.cta-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  text-decoration: none;
}

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

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
}

.btn-vpn {
  background-color: var(--vpn-color);
  color: #ffffff;
}

.btn-vpn:hover {
  background-color: var(--vpn-hover);
  color: #ffffff;
}

.btn-game {
  background-color: var(--game-color);
  color: #ffffff;
}

.btn-game:hover {
  background-color: var(--game-hover);
  color: #ffffff;
}

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-body);
}

.btn-outline:hover {
  border-color: var(--text-body);
  color: var(--text-main);
  background-color: var(--bg-surface-alt);
}

/* ==========================================================================
   Table & Comparison Matrix
   ========================================================================== */

.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 1.75rem 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

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

th {
  background-color: #f8fafc;
  font-weight: 600;
  color: var(--text-main);
  white-space: nowrap;
}

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

tr:hover td {
  background-color: #f8fafc;
}

/* ==========================================================================
   Airport Cards (28 Airport Detailed Profiles)
   ========================================================================== */

.airport-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.airport-card:hover {
  border-color: #93c5fd;
  box-shadow: var(--shadow-md);
}

.airport-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;
  align-items: center;
  gap: 0.75rem;
}

.airport-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: #f1f5f9;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.airport-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.airport-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
  background-color: #f8fafc;
  padding: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid #f1f5f9;
}

.meta-item {
  display: flex;
  flex-direction: column;
}

.meta-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.2rem;
}

.meta-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
}

.coupon-box {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: #fef3c7;
  border: 1px dashed #f59e0b;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-family: monospace;
  font-weight: 700;
  color: #b45309;
}

.plan-table {
  width: 100%;
  margin: 1rem 0;
  font-size: 0.88rem;
}

.plan-table th {
  background-color: #f1f5f9;
}

.pros-cons-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.pros-box, .cons-box {
  padding: 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

.pros-box {
  background-color: #f0fdf4;
  border: 1px solid #dcfce7;
}

.pros-box h5 {
  color: #15803d;
  font-size: 0.88rem;
  margin-bottom: 0.4rem;
}

.cons-box {
  background-color: #fff7ed;
  border: 1px solid #ffedd5;
}

.cons-box h5 {
  color: #c2410c;
  font-size: 0.88rem;
  margin-bottom: 0.4rem;
}

.airport-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.disclosure-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.4;
  flex: 1;
  min-width: 240px;
}

/* ==========================================================================
   TOC (Table of Contents) Sidebar
   ========================================================================== */

.toc-sidebar {
  position: sticky;
  top: 95px;
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  padding: 1.25rem;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
}

.toc-title {
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-item {
  margin-bottom: 0.4rem;
}

.toc-item.indent-1 {
  padding-left: 0.85rem;
}

.toc-link {
  color: var(--text-muted);
  display: block;
  line-height: 1.4;
  padding: 0.2rem 0;
}

.toc-link:hover, .toc-link.active {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

/* ==========================================================================
   FAQ Accordion & List
   ========================================================================== */

.faq-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-sm);
}

.faq-question {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.6rem;
}

.faq-answer {
  color: var(--text-body);
  font-size: 0.95rem;
  line-height: 1.65;
  margin: 0;
}

/* ==========================================================================
   Search Modal (Pure Vanilla JS Instant Search)
   ========================================================================== */

.search-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: flex-start;
  justify-content: center;
  padding: 4rem 1rem 1rem;
}

.search-modal.active {
  display: flex;
}

.search-container {
  background-color: var(--bg-surface);
  width: 100%;
  max-width: 640px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  animation: modalSlide 0.15s ease-out;
}

@keyframes modalSlide {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

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

.search-input {
  flex: 1;
  border: none;
  font-size: 1.1rem;
  color: var(--text-main);
  outline: none;
  background: transparent;
  font-family: inherit;
}

.search-close-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem;
}

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

.search-result-item {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.35rem;
  cursor: pointer;
  display: block;
  text-decoration: none;
  color: inherit;
  transition: background-color 0.15s ease;
}

.search-result-item:hover, .search-result-item.highlighted {
  background-color: var(--bg-surface-alt);
  text-decoration: none;
}

.search-result-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.search-result-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.search-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 3rem 1.25rem 2rem;
  margin-top: auto;
}

.footer-container {
  max-width: var(--max-w);
  margin: 0 auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

.footer-col h5 {
  font-size: 0.95rem;
  color: var(--text-main);
  margin-bottom: 0.85rem;
  font-weight: 600;
}

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

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

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

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

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

/* ==========================================================================
   Responsive Adaptations (Mobile First Optimization)
   ========================================================================== */

@media (max-width: 900px) {
  .with-toc {
    grid-template-columns: 1fr;
  }

  .toc-sidebar {
    display: none; /* Hide sticky sidebar on tablet/mobile */
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }
}

@media (max-width: 768px) {
  :root {
    --header-h: 60px;
  }

  .brand-name {
    font-size: 1.05rem;
  }

  .brand-desc {
    display: none;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
    flex-direction: column;
    padding: 1rem;
    box-shadow: var(--shadow-md);
  }

  .main-nav.active {
    display: flex;
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

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

  .search-trigger kbd {
    display: none;
  }

  .hero-box {
    padding: 1.5rem 1.25rem;
  }

  h1 {
    font-size: 1.55rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  .airport-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .airport-footer {
    flex-direction: column;
    align-items: stretch;
  }

  .airport-footer .btn {
    width: 100%;
  }
}

/* ==========================================================================
   Featured Airport (全球云 主推样式)
   ========================================================================== */

.airport-card.featured-card {
  border: 2px solid #38bdf8;
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 15%);
  box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.15), 0 8px 10px -6px rgba(2, 132, 199, 0.1);
  position: relative;
}

.featured-ribbon {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
  color: #ffffff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.3rem 0.85rem;
  border-radius: var(--radius-full);
  box-shadow: 0 2px 4px rgba(2, 132, 199, 0.3);
}

.featured-spotlight-box {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: var(--radius-lg);
  padding: 2rem;
  color: #f8fafc;
  margin: 2rem 0;
  box-shadow: var(--shadow-lg);
  border: 1px solid #334155;
  position: relative;
  overflow: hidden;
}

.featured-spotlight-box::after {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.25) 0%, rgba(56, 189, 248, 0) 70%);
  pointer-events: none;
}

.featured-spotlight-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.featured-spotlight-title {
  font-size: 1.5rem;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.featured-spotlight-desc {
  font-size: 1.02rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.featured-spotlight-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.spotlight-metric {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
}

.spotlight-metric-label {
  font-size: 0.75rem;
  color: #94a3b8;
  text-transform: uppercase;
}

.spotlight-metric-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: #38bdf8;
  margin-top: 0.2rem;
}

/* ==========================================================================
   Review Article Top Banner (图1 统一规范排版)
   ========================================================================== */

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

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

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

.breadcrumb-sep {
  color: #94a3b8;
}

.review-hero-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border: 1px solid #334155;
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  color: #ffffff;
  margin: 1.5rem 0 2.5rem;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.review-hero-banner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, rgba(56, 189, 248, 0) 70%);
  pointer-events: none;
}

.review-hero-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.review-hero-title-group {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.review-brand-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
  color: #ffffff;
  font-size: 1.25rem;
  font-weight: 800;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.35);
  flex-shrink: 0;
}

.review-hero-h1 {
  font-size: 1.6rem;
  color: #ffffff;
  margin: 0;
  line-height: 1.25;
}

.review-hero-sub {
  font-size: 0.82rem;
  color: #94a3b8;
  margin-top: 0.2rem;
}

/* 统一规范的 6 宫格核心参数指标 (图1) */
.review-metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.review-metric-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s ease;
}

.review-metric-box:hover {
  border-color: rgba(56, 189, 248, 0.4);
  background: rgba(255, 255, 255, 0.07);
}

.review-metric-name {
  font-size: 0.75rem;
  color: #94a3b8;
  font-weight: 600;
  text-transform: uppercase;
  margin-bottom: 0.25rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.review-metric-val {
  font-size: 1.02rem;
  font-weight: 700;
  color: #f8fafc;
}

.review-metric-val.highlight {
  color: #38bdf8;
}

.review-hero-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 0.5rem;
}

.review-coupon-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(254, 243, 199, 0.15);
  border: 1px dashed #f59e0b;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  color: #fde68a;
  font-size: 0.9rem;
}

.review-coupon-pill code {
  color: #fbbf24;
  font-weight: 700;
  font-family: monospace;
  font-size: 1.05rem;
}

@media (max-width: 820px) {
  .review-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .review-metrics-grid {
    grid-template-columns: 1fr;
  }
  .review-hero-banner {
    padding: 1.25rem;
  }
  .review-hero-h1 {
    font-size: 1.35rem;
  }
}

/* ==========================================================================
   简单明了的机场推荐列表排版 (清晰直观、拒绝冗长罗列)
   ========================================================================== */

.airport-article-section {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.airport-article-section:hover {
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.airport-article-section.is-featured {
  border: 2px solid #38bdf8;
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 18%);
  box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.12);
}

.airport-section-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 #e2e8f0;
}

.airport-section-title-wrap {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1 1 60%;
  min-width: 280px;
}

.airport-title-main-row {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  flex-wrap: wrap;
}

.airport-section-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  font-weight: 800;
  color: #0284c7;
  background: #e0f2fe;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.airport-section-name {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
  line-height: 1.35;
}

.airport-brief-desc {
  font-size: 1rem;
  color: #334155;
  line-height: 1.7;
  margin-bottom: 1.15rem;
}

.airport-quick-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.75rem;
  background: #f8fafc;
  padding: 0.9rem 1.15rem;
  border-radius: var(--radius-md);
  border: 1px solid #e2e8f0;
  margin-bottom: 1.15rem;
}

.spec-pill {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.spec-k {
  font-size: 0.78rem;
  font-weight: 700;
  color: #64748b;
}

.spec-v {
  font-size: 0.9rem;
  font-weight: 600;
  color: #1e293b;
}

.spec-v.highlight {
  color: #0284c7;
}

.airport-brief-plans {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.88rem;
  margin-bottom: 1.15rem;
  background: #ffffff;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  border: 1px dashed #cbd5e1;
}

.brief-plans-label {
  font-weight: 700;
  color: #475569;
  flex-shrink: 0;
}

.brief-plans-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.plan-pill {
  background: #f1f5f9;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  color: #334155;
  font-size: 0.85rem;
}

.plan-pill strong {
  color: #0284c7;
}

.airport-brief-highlights {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.brief-pro, .brief-con {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.brief-pro {
  color: #166534;
}

.brief-con {
  color: #9a3412;
}

.brief-icon {
  flex-shrink: 0;
  margin-top: 1px;
}

.airport-article-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1.15rem;
  border-top: 1px solid #f1f5f9;
}

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

.airport-footer-btns {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .airport-article-section {
    padding: 1.25rem;
  }
  .airport-quick-specs {
    grid-template-columns: 1fr;
  }
  .airport-section-name {
    font-size: 1.15rem;
  }
  .airport-article-footer {
    flex-direction: column;
    align-items: flex-start;
  }
  .airport-footer-btns {
    width: 100%;
  }
  .airport-footer-btns .btn {
    flex: 1;
    text-align: center;
  }
}

/* ==========================================================================
   Navigation Dropdown Menu for 游戏加速器
   ========================================================================== */
.nav-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.nav-arrow {
  font-size: 0.7rem;
  margin-left: 0.25rem;
  transition: transform 0.2s ease;
  display: inline-block;
}

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

.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.5rem;
  z-index: 1000;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-dropdown:hover .nav-dropdown-menu {
  display: flex;
}

.nav-dropdown-menu .dropdown-item {
  padding: 0.55rem 0.85rem;
  font-size: 0.88rem;
  color: var(--text-body);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-dropdown-menu .dropdown-item:hover {
  background-color: #f1f5f9;
  color: var(--primary);
  text-decoration: none;
}

.nav-dropdown-menu .dropdown-item.active {
  background-color: #eff6ff;
  color: var(--primary);
  font-weight: 600;
}

@media (max-width: 768px) {
  .nav-dropdown {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }
  .nav-dropdown-menu {
    position: static;
    display: flex;
    box-shadow: none;
    border: none;
    padding-left: 1rem;
    width: 100%;
  }
}

/* ==========================================================================
   游戏加速器子导航栏 (Subnav Bar)
   ========================================================================== */
.game-subnav-bar {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin: 1.25rem 0 2rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  box-shadow: var(--shadow-sm);
}

.game-subnav-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: #475569;
  white-space: nowrap;
}

.game-subnav-items {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.subnav-item {
  font-size: 0.85rem;
  font-weight: 500;
  color: #475569;
  padding: 0.35rem 0.75rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-full);
  transition: all 0.15s ease;
  white-space: nowrap;
}

.subnav-item:hover {
  background: #eff6ff;
  border-color: #93c5fd;
  color: #0284c7;
  text-decoration: none;
}

.subnav-item.active {
  background: #0284c7;
  border-color: #0284c7;
  color: #ffffff;
  font-weight: 600;
}

/* 游戏加速器专栏卡片导航网格 */
.game-subnav-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 1.75rem 0 2.5rem;
}

.game-subnav-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.35rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  text-decoration: none;
  color: inherit;
}

.game-subnav-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: #0284c7;
  text-decoration: none;
}

.game-subnav-card-header {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-bottom: 0.65rem;
}

.game-subnav-card-icon {
  font-size: 1.5rem;
}

.game-subnav-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin: 0;
}

.game-subnav-card:hover .game-subnav-card-title {
  color: #0284c7;
}

.game-subnav-card-desc {
  font-size: 0.88rem;
  color: #64748b;
  line-height: 1.55;
  margin-bottom: 1rem;
}

.game-subnav-card-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: #0284c7;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  margin-top: auto;
}

/* ==========================================================================
   整齐对称的场景卡片网格 (图2排版整齐专用)
   ========================================================================== */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin: 1.5rem 0 2rem;
}

.scenario-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-md);
  padding: 1.35rem 1.5rem;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

.scenario-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid #f1f5f9;
}

.scenario-icon {
  font-size: 1.25rem;
}

.scenario-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.4;
}

.scenario-card-body {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.scenario-row {
  display: flex;
  align-items: flex-start;
  gap: 0.4rem;
  font-size: 0.92rem;
  line-height: 1.6;
}

.scenario-label {
  font-weight: 700;
  color: #334155;
  flex-shrink: 0;
  white-space: nowrap;
}

.scenario-text {
  color: #475569;
}

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

/* ==========================================================================
   加速器工具与客户端专用组件样式
   ========================================================================== */
.tool-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin: 1.75rem 0;
}

.tool-card {
  background: var(--bg-card, #ffffff);
  border: 1px solid var(--border-color, #e2e8f0);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.tool-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary, #0284c7);
  box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.1);
}

.tool-card.is-featured {
  border: 2px solid #38bdf8;
  background: linear-gradient(180deg, #f0f9ff 0%, #ffffff 25%);
}

.tool-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.tool-card-title-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.tool-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main, #0f172a);
  margin: 0;
}

.tool-card-title a {
  color: inherit;
  text-decoration: none;
}

.tool-card-title a:hover {
  color: var(--primary, #0284c7);
}

.tool-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted, #64748b);
  line-height: 1.6;
  margin: 0 0 1rem 0;
  flex-grow: 1;
}

.tool-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.tool-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.78rem;
  font-weight: 500;
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

.tool-badge.is-primary {
  background: #e0f2fe;
  color: #0369a1;
  border-color: #bae6fd;
}

.tool-badge.is-green {
  background: #dcfce7;
  color: #15803d;
  border-color: #bbf7d0;
}

.tool-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-color, #e2e8f0);
}

.tool-btn-group .btn {
  font-size: 0.84rem;
  padding: 0.45rem 0.85rem;
  flex: 1;
  text-align: center;
  white-space: nowrap;
}

/* 客户端教程步骤卡片 */
.tutorial-steps-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin: 2rem 0;
}

.step-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1.5rem;
  position: relative;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.step-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #0284c7;
  color: #ffffff;
  font-weight: 700;
  font-size: 0.95rem;
  flex-shrink: 0;
}

.step-title {
  margin: 0;
  font-size: 1.18rem;
  color: var(--text-main, #0f172a);
}

.step-content {
  font-size: 0.93rem;
  line-height: 1.75;
  color: var(--text-main, #334155);
}

.step-content p {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.step-content ol, .step-content ul {
  padding-left: 1.25rem;
  margin-bottom: 0.75rem;
}

.step-tip-box {
  background: #f0fdf4;
  border-left: 4px solid #10b981;
  padding: 0.75rem 1rem;
  border-radius: 0 6px 6px 0;
  margin: 0.75rem 0;
  font-size: 0.88rem;
  color: #166534;
}

.step-warning-box {
  background: #fef2f2;
  border-left: 4px solid #ef4444;
  padding: 0.75rem 1rem;
  border-radius: 0 6px 6px 0;
  margin: 0.75rem 0;
  font-size: 0.88rem;
  color: #991b1b;
}

/* 客户端目录大表格 */
.tool-catalog-table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
}

.tool-catalog-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  background: #ffffff;
}

.tool-catalog-table th {
  background: #f8fafc;
  padding: 0.75rem 0.85rem;
  text-align: left;
  border-bottom: 2px solid #e2e8f0;
  font-weight: 600;
  color: var(--text-main, #0f172a);
  white-space: nowrap;
}

.tool-catalog-table td {
  padding: 0.7rem 0.85rem;
  border-bottom: 1px solid #f1f5f9;
  color: var(--text-muted, #475569);
  vertical-align: middle;
}

.tool-catalog-table tr:hover {
  background: #f8fafc;
}

/* 客户端教程增强样式：核验概览、进度清单与按症状排查 */
.tutorial-spec-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin: 1.5rem 0;
  box-shadow: 0 1px 4px rgba(0,0,0,0.03);
}

.tutorial-spec-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px dashed #cbd5e1;
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tutorial-spec-title {
  margin: 0;
  font-size: 1.08rem;
  font-weight: 700;
  color: #0f172a;
}

.tutorial-spec-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
  font-size: 0.9rem;
}

.tutorial-spec-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.tutorial-spec-label {
  font-size: 0.78rem;
  color: #64748b;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.tutorial-spec-value {
  color: #1e293b;
  font-weight: 500;
}

.tutorial-spec-goal {
  grid-column: 1 / -1;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  padding: 0.85rem 1rem;
  margin-top: 0.5rem;
  font-size: 0.92rem;
  color: #1e40af;
  line-height: 1.6;
}

/* 步骤快速导航药丸 */
.tutorial-nav-pills {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.5rem 0 1rem 0;
  margin-bottom: 1.5rem;
  scrollbar-width: thin;
}

.tut-nav-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  background: #ffffff;
  border: 1px solid #e2e8f0;
  font-size: 0.82rem;
  color: #475569;
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.tut-nav-pill:hover {
  background: #0284c7;
  color: #ffffff;
  border-color: #0284c7;
}

/* 交互式进度卡片 */
.tutorial-progress-card {
  background: #ffffff;
  border: 1px solid #bae6fd;
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.06);
}

.tut-progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tut-progress-title-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.tut-progress-track {
  width: 100%;
  height: 8px;
  background: #f1f5f9;
  border-radius: 9999px;
  overflow: hidden;
  margin-bottom: 0.75rem;
}

.tut-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #0284c7 0%, #10b981 100%);
  width: 0%;
  transition: width 0.3s ease;
}

.tut-progress-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  color: #64748b;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tut-reset-btn {
  background: transparent;
  border: 1px solid #cbd5e1;
  color: #64748b;
  padding: 0.25rem 0.65rem;
  border-radius: 6px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tut-reset-btn:hover {
  background: #f8fafc;
  color: #0f172a;
  border-color: #94a3b8;
}

/* 步骤卡片完成态与多维度四要素结构 */
.step-card.is-completed {
  border-color: #86efac;
  background: #fcfdfc;
}

.step-card.is-completed .step-number {
  background: #10b981;
}

.step-checkbox-wrap {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.84rem;
  color: #64748b;
  cursor: pointer;
  user-select: none;
}

.step-checkbox-wrap input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: #10b981;
}

.step-action-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 0.75rem;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  padding: 1rem;
  margin: 1rem 0;
  font-size: 0.88rem;
}

.step-action-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.step-action-tag {
  font-weight: 700;
  font-size: 0.78rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.tag-where { color: #0284c7; }
.tag-what { color: #4338ca; }
.tag-expect { color: #15803d; }
.tag-fail { color: #b91c1c; }

.step-action-desc {
  color: #334155;
  line-height: 1.6;
}

/* 按症状排查交互向导 */
.symptom-wizard-card {
  background: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.symptom-selector {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0;
}

.symptom-btn {
  background: #f8fafc;
  border: 1px solid #cbd5e1;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  text-align: left;
  font-size: 0.88rem;
  color: #1e293b;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  line-height: 1.5;
}

.symptom-btn:hover {
  background: #f0f9ff;
  border-color: #0284c7;
  color: #0284c7;
}

.symptom-btn.active {
  background: #e0f2fe;
  border-color: #0284c7;
  color: #0369a1;
  font-weight: 600;
  box-shadow: 0 0 0 2px rgba(2, 132, 199, 0.2);
}

.symptom-panel {
  display: none;
  background: #f8fafc;
  border: 1px solid #bae6fd;
  border-radius: 8px;
  padding: 1.25rem;
  margin-top: 1rem;
  animation: fadeIn 0.25s ease;
}

.symptom-panel h4 {
  margin: 0 0 0.5rem 0;
  color: #0c4a6e;
  font-size: 1rem;
}

.symptom-panel ol, .symptom-panel ul {
  margin: 0.5rem 0 0.75rem 1.25rem;
  padding: 0;
  font-size: 0.9rem;
  line-height: 1.65;
  color: #334155;
}

.symptom-ctrls {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 1rem;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ==========================================================================
   全球云（GCVIP）全站推荐专属 Banner（注册按钮显著高亮）
   ========================================================================== */
.qq-promo-banner {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0369a1 100%);
  border: 2px solid #38bdf8;
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  color: #ffffff;
  margin: 1.75rem 0;
  box-shadow: 0 10px 25px -5px rgba(2, 132, 199, 0.25), 0 8px 10px -6px rgba(15, 23, 42, 0.3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
}

.qq-promo-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.18) 0%, transparent 70%);
  pointer-events: none;
}

.qq-promo-left {
  flex: 1;
  min-width: 0;
  z-index: 1;
}

.qq-promo-badge-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.4rem;
}

.qq-promo-badge {
  background: linear-gradient(90deg, #f59e0b 0%, #ea580c 100%);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  letter-spacing: 0.02em;
}

.qq-promo-tag {
  background: rgba(56, 189, 248, 0.15);
  color: #7dd3fc;
  font-size: 0.78rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.qq-promo-title {
  margin: 0.25rem 0 0.35rem 0;
  font-size: 1.22rem;
  font-weight: 700;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.qq-promo-desc {
  margin: 0 0 0.55rem 0;
  font-size: 0.9rem;
  color: #cbd5e1;
  line-height: 1.55;
}

.qq-promo-meta {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  flex-wrap: wrap;
  font-size: 0.86rem;
}

.qq-promo-price {
  color: #fde68a;
}
.qq-promo-price strong {
  color: #fbbf24;
  font-size: 1.1rem;
}

.qq-promo-coupon {
  background: rgba(15, 23, 42, 0.6);
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(253, 230, 138, 0.6);
  color: #fde68a;
  font-size: 0.82rem;
}
.qq-promo-coupon code {
  color: #ffffff;
  font-weight: 700;
  background: #0284c7;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-family: ui-monospace, monospace;
}

.qq-promo-right {
  flex-shrink: 0;
  z-index: 1;
}

.btn-qq-register {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: linear-gradient(135deg, #f59e0b 0%, #ea580c 50%, #dc2626 100%);
  color: #ffffff !important;
  padding: 0.8rem 1.45rem;
  border-radius: var(--radius-md);
  font-weight: 700;
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(234, 88, 12, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: all 0.25s ease;
  border: 1px solid rgba(255, 255, 255, 0.25);
  white-space: nowrap;
}

.btn-qq-register:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 25px rgba(234, 88, 12, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.45);
  background: linear-gradient(135deg, #fbbf24 0%, #f97316 50%, #ea580c 100%);
}

.btn-qq-register .btn-icon {
  font-size: 1.4rem;
}

.btn-qq-register .btn-text-wrap {
  display: flex;
  flex-direction: column;
  text-align: left;
}

.btn-qq-register .btn-main-text {
  font-size: 1.08rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.btn-qq-register .btn-sub-text {
  font-size: 0.74rem;
  color: #fef08a;
  font-weight: 500;
  line-height: 1.2;
}

.btn-qq-register .btn-arrow {
  font-size: 1.25rem;
  transition: transform 0.2s ease;
}

.btn-qq-register:hover .btn-arrow {
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .qq-promo-banner {
    flex-direction: column;
    align-items: stretch;
    padding: 1.15rem;
    gap: 1rem;
  }
  .btn-qq-register {
    width: 100%;
    justify-content: center;
    padding: 0.75rem 1rem;
  }
}