:root {
  --bg-primary: #F4FAF7;
  --bg-card: #FFFFFF;
  --bg-surface: #EBF4F0;
  --bg-subtle: #F0F7F3;
  --border-light: #DCE8E2;
  --border-focus: #1A3A34;
  --text-primary: #152622;
  --text-regular: #2C3E38;
  --text-muted: #5A726A;
  --brand-green: #1A3A34;
  --brand-green-light: #2A544B;
  --brand-accent: #E87A3E;
  --brand-accent-hover: #D5672D;
  --brand-accent-subtle: #FDF3ED;
  --tag-bg: #E3EFEA;
  --tag-text: #1E463E;
  --code-bg: #EAEFEA;
  --shadow-sm: 0 1px 3px rgba(21, 38, 34, 0.05);
  --shadow-md: 0 4px 12px rgba(21, 38, 34, 0.06);
  --shadow-lg: 0 8px 24px rgba(21, 38, 34, 0.08);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --max-width: 1160px;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-regular);
  line-height: 1.75;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--brand-green);
  text-decoration: none;
  transition: all 0.2s ease;
}

a:hover {
  color: var(--brand-accent);
}

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

/* Header & Navigation */
.site-header {
  background: rgba(244, 250, 247, 0.94);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--border-light);
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

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

.brand-logo img {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
}

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

.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.brand-domain {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 400;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.nav-link {
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-regular);
}

.nav-link:hover {
  background-color: var(--bg-surface);
  color: var(--brand-green);
}

.nav-link.active {
  background-color: var(--bg-surface);
  color: var(--brand-green);
  font-weight: 600;
}

.nav-highlight {
  background-color: var(--brand-accent-subtle);
  color: var(--brand-accent) !important;
  border: 1px solid rgba(232, 122, 62, 0.3);
  font-weight: 600;
}

.nav-highlight:hover {
  background-color: var(--brand-accent) !important;
  color: #FFFFFF !important;
}

/* Search Bar in Header */
.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.search-box-trigger {
  position: relative;
  display: flex;
  align-items: center;
}

.search-input {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 0.45rem 1rem 0.45rem 2.25rem;
  font-size: 0.875rem;
  color: var(--text-regular);
  width: 170px;
  transition: all 0.25s ease;
  outline: none;
}

.search-input:focus {
  width: 240px;
  border-color: var(--brand-accent);
  box-shadow: 0 0 0 3px rgba(232, 122, 62, 0.15);
}

.search-icon {
  position: absolute;
  left: 0.8rem;
  width: 14px;
  height: 14px;
  color: var(--text-muted);
  pointer-events: none;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.45rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Container */
.main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

/* Page Titles & Headers */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  line-height: 1.35;
}

h1 {
  font-size: 2.15rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

h2 {
  font-size: 1.5rem;
  margin-top: 2.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-light);
}

h3 {
  font-size: 1.2rem;
  margin-top: 1.75rem;
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1.25rem;
}

/* Relationship Band (首屏三元关系带) */
.relation-band {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

.relation-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  position: relative;
}

.relation-item {
  background: var(--bg-subtle);
  border-left: 3px solid var(--brand-green);
  padding: 1.25rem;
  border-radius: var(--radius-sm);
}

.relation-item h4 {
  font-size: 1.05rem;
  color: var(--brand-green);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.relation-item p {
  font-size: 0.9rem;
  color: var(--text-regular);
  margin-bottom: 0;
  line-height: 1.6;
}

/* Handbook / Note Area / Alert */
.handbook-note {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-left: 4px solid var(--brand-accent);
  padding: 1.15rem 1.35rem;
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
  font-size: 0.925rem;
}

.handbook-note p:last-child {
  margin-bottom: 0;
}

.handbook-tip {
  background-color: #EDF7F2;
  border: 1px solid #CDE5D8;
  border-left: 4px solid var(--brand-green);
  padding: 1.15rem 1.35rem;
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
  font-size: 0.925rem;
}

.disclosure-box {
  background: #FFF9F5;
  border: 1px solid #F5D8C7;
  border-left: 4px solid var(--brand-accent);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  margin: 1.5rem 0;
  font-size: 0.875rem;
  color: #7A3C1A;
}

/* Quick Navigation / Horizontal Anchor Directory */
.anchor-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  background: var(--bg-card);
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  margin: 1.5rem 0 2rem;
  font-size: 0.875rem;
}

.anchor-nav span {
  font-weight: 600;
  color: var(--text-muted);
  margin-right: 0.35rem;
  display: flex;
  align-items: center;
}

.anchor-chip {
  background: var(--bg-subtle);
  color: var(--text-regular);
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  border: 1px solid var(--border-light);
  transition: all 0.15s ease;
}

.anchor-chip:hover {
  background: var(--brand-green);
  color: #FFFFFF;
}

.anchor-chip.active-chip {
  background: var(--brand-green);
  color: #FFFFFF;
  border-color: var(--brand-green);
  font-weight: 700;
}

/* Two Column Entrances on Homepage (左宽右窄双入口) */
.dual-entrance {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.5rem;
  margin: 2rem 0;
}

.entrance-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.entrance-card.featured {
  border-color: rgba(232, 122, 62, 0.4);
  background: linear-gradient(180deg, #FFFFFF 0%, #FDF9F6 100%);
}

.entrance-tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 0.85rem;
}

.tag-orange {
  background: var(--brand-accent-subtle);
  color: var(--brand-accent);
}

.tag-green {
  background: var(--tag-bg);
  color: var(--tag-text);
}

.cta-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background-color: var(--brand-accent);
  color: #FFFFFF !important;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.65rem 1.35rem;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease;
  margin-top: 1rem;
  text-decoration: none;
}

.cta-button:hover {
  background-color: var(--brand-accent-hover);
}

.cta-secondary {
  background-color: var(--brand-green);
}

.cta-secondary:hover {
  background-color: var(--brand-green-light);
}

/* Airport Cards Grid & Details */
.airport-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease;
}

.airport-card:hover {
  border-color: var(--border-focus);
}

.airport-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-light);
}

.airport-header h3 {
  margin: 0;
  font-size: 1.3rem;
  color: var(--text-primary);
}

.airport-meta-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.meta-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background: var(--bg-surface);
  color: var(--text-regular);
  border: 1px solid var(--border-light);
}

.meta-badge.price-badge {
  background: #FFF4EE;
  color: var(--brand-accent);
  border-color: #F8D3BF;
  font-weight: 600;
}

.airport-grid-details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin: 1.25rem 0;
  font-size: 0.9rem;
}

.detail-block {
  background: var(--bg-subtle);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
}

.detail-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
  font-weight: 600;
}

.detail-value {
  color: var(--text-primary);
}

.coupon-box {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  background: #FFF8F3;
  border: 1px dashed var(--brand-accent);
  padding: 0.55rem 0.85rem;
  border-radius: var(--radius-sm);
  margin-top: 0.5rem;
  font-size: 0.875rem;
}

.coupon-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-weight: 700;
  color: var(--brand-accent);
  background: #FFEAD9;
  padding: 0.15rem 0.45rem;
  border-radius: 3px;
}

.copy-btn {
  background: none;
  border: 1px solid var(--brand-accent);
  color: var(--brand-accent);
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.copy-btn:hover {
  background: var(--brand-accent);
  color: #FFFFFF;
}

.airport-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--border-light);
}

/* Full Width Comparison Table */
.data-table-wrapper {
  overflow-x: auto;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
  -webkit-overflow-scrolling: touch;
}

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

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

.data-table th {
  background-color: var(--bg-surface);
  color: var(--text-primary);
  font-weight: 600;
}

.data-table tr:hover td {
  background-color: var(--bg-subtle);
}

/* FAQ Item */
.faq-block {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}

.faq-block h3 {
  margin-top: 0;
  font-size: 1.15rem;
  color: var(--brand-green);
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.faq-block h3::before {
  content: "Q";
  color: var(--brand-accent);
  font-weight: 700;
  font-size: 1rem;
}

.faq-answer {
  font-size: 0.95rem;
  color: var(--text-regular);
  margin-bottom: 0;
}

/* Footer */
.site-footer {
  background: #EAEFEA;
  border-top: 1px solid var(--border-light);
  padding: 3rem 1.25rem 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

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

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

.footer-brand h4 {
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
}

.footer-links h5 {
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

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

.footer-links li {
  margin-bottom: 0.45rem;
}

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

/* Search Dropdown / Results Modal */
.search-results-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(18, 38, 34, 0.4);
  backdrop-filter: blur(4px);
  z-index: 200;
  justify-content: center;
  align-items: flex-start;
  padding: 5rem 1rem 2rem;
}

.search-results-overlay.active {
  display: flex;
}

.search-modal {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  max-width: 680px;
  width: 100%;
  max-height: 75vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

.search-modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.search-modal-input {
  width: 100%;
  border: none;
  outline: none;
  font-size: 1.05rem;
  color: var(--text-primary);
  background: transparent;
}

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

.search-results-list {
  padding: 0.75rem 1.25rem;
  overflow-y: auto;
  list-style: none;
}

.search-result-item {
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border-light);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-title {
  font-weight: 600;
  font-size: 1rem;
  color: var(--brand-green);
  display: block;
  margin-bottom: 0.25rem;
}

.search-result-snippet {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.grid-two-col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

/* Mobile Responsiveness */
@media (max-width: 900px) {
  .relation-grid {
    grid-template-columns: 1fr;
  }

  .dual-entrance {
    grid-template-columns: 1fr;
  }

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

  .footer-top {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .os-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  body {
    font-size: 0.95rem;
  }

  .main-content {
    padding: 1.25rem 1rem 3rem;
  }

  .header-container {
    padding: 0.65rem 1rem;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    flex-direction: column;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    z-index: 1000;
    gap: 0.25rem;
  }

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

  .main-nav li {
    width: 100%;
  }

  .main-nav a.nav-link {
    display: block;
    width: 100%;
    padding: 0.65rem 0.75rem;
    border-radius: var(--radius-sm);
  }

  .mobile-menu-btn {
    display: block;
    padding: 0.4rem;
    cursor: pointer;
  }

  .search-input {
    width: 110px;
    font-size: 0.8rem;
    padding: 0.35rem 0.65rem 0.35rem 1.85rem;
  }

  .search-input:focus {
    width: 135px;
  }

  h1 {
    font-size: 1.45rem;
    line-height: 1.35;
  }

  h2 {
    font-size: 1.25rem;
    line-height: 1.35;
  }

  h3 {
    font-size: 1.1rem;
  }

  .grid-two-col {
    grid-template-columns: 1fr !important;
    gap: 1rem;
  }

  /* Global Cloud Featured Card Mobile */
  .global-cloud-featured {
    padding: 1.25rem 1rem;
    margin: 1.5rem 0;
  }

  .featured-ribbon {
    display: none;
  }

  .gc-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .gc-cta-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }

  .gc-btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  /* Scenario Airport Cards Mobile */
  .scenario-airports-section {
    padding: 1.25rem 1rem;
    margin: 1.75rem 0;
  }

  .scenario-card {
    padding: 1rem;
  }

  .scenario-card-actions,
  .airport-actions {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .scenario-card-actions .cta-button,
  .airport-actions .cta-button {
    width: 100%;
    justify-content: center;
    text-align: center;
    min-height: 40px;
  }

  .coupon-box {
    width: 100%;
    justify-content: space-between;
  }

  /* Client Cards & Filters Mobile */
  .client-filter-wrapper {
    padding: 1rem;
    margin: 1.25rem 0 1.5rem;
  }

  .client-filter-header {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }

  .client-page-search {
    width: 100%;
    min-width: unset;
  }

  .client-card {
    padding: 1.25rem 1rem;
  }

  .client-meta-info {
    gap: 0.5rem 1rem;
    padding: 0.5rem 0.75rem;
  }

  .dl-btn {
    max-width: 100%;
    word-break: break-word;
    font-size: 0.8rem;
    padding: 0.45rem 0.75rem;
    min-height: 34px;
  }

  /* Top Promo Banner Mobile */
  .top-promo-banner {
    font-size: 0.78rem;
    padding: 0.45rem 0.75rem;
    line-height: 1.4;
  }

  .top-promo-banner .promo-btn {
    display: inline-block;
    margin-top: 0.25rem;
    font-size: 0.75rem;
    padding: 2px 8px;
  }

  /* Search Modal Overlay Mobile */
  .search-results-overlay {
    padding: 2.5rem 0.75rem 1rem;
  }

  .search-modal {
    max-height: 85vh;
  }

  /* Code block overflow scrolling */
  pre, code, .code-box {
    -webkit-overflow-scrolling: touch;
  }

  .anchor-nav {
    padding: 0.65rem 0.85rem;
    gap: 0.35rem;
  }

  .anchor-chip {
    font-size: 0.78rem;
    padding: 0.2rem 0.5rem;
  }
}

@media (max-width: 640px) {
  .os-category-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.35rem;
  }

  .brand-name {
    font-size: 0.95rem;
  }

  .brand-domain {
    display: none;
  }

  .header-actions {
    gap: 0.35rem;
  }

  .search-input {
    width: 85px;
  }

  .search-input:focus {
    width: 115px;
  }

  .client-card-title {
    font-size: 1.1rem;
  }

  .scenario-card-title {
    font-size: 1.05rem;
  }
}

/* ==========================================================================
   Client Downloads Page Styles
   ========================================================================== */
.client-filter-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  margin: 1.5rem 0 2rem;
  box-shadow: var(--shadow-sm);
}

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

.client-filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-regular);
  padding: 0.35rem 0.85rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: var(--brand-green);
  color: #FFFFFF;
  border-color: var(--brand-green);
}

.filter-btn.active {
  background: var(--brand-accent);
  color: #FFFFFF;
  border-color: var(--brand-accent);
  font-weight: 600;
}

.client-page-search {
  position: relative;
  min-width: 240px;
}

.client-page-search input {
  width: 100%;
  padding: 0.45rem 1rem 0.45rem 2rem;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  font-size: 0.875rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
}

.client-page-search input:focus {
  border-color: var(--brand-accent);
}

.client-page-search svg {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  color: var(--text-muted);
}

.client-list-stats {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Client Card */
.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.client-card:hover {
  border-color: var(--border-focus);
}

.client-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
}

.client-card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.client-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-system {
  background: var(--bg-surface);
  color: var(--brand-green);
  border: 1px solid var(--border-light);
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
}

.tag-core {
  background: #EAF4FD;
  color: #1A568C;
  border: 1px solid #D1E5F7;
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  font-weight: 600;
}

.status-badge {
  font-size: 0.75rem;
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  font-weight: 600;
}

.status-active {
  background: #E6F7ED;
  color: #15803D;
  border: 1px solid #BBF0CD;
}

.status-slow {
  background: #FEF3C7;
  color: #B45309;
  border: 1px solid #FDE68A;
}

.status-stop {
  background: #FEE2E2;
  color: #B91C1C;
  border: 1px solid #FECACA;
}

.status-unknown {
  background: #F3F4F6;
  color: #4B5563;
  border: 1px solid #E5E7EB;
}

.client-meta-info {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0.65rem 0 1rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px dashed var(--border-light);
}

.client-meta-item span {
  color: var(--text-primary);
  font-weight: 500;
}

.client-downloads-section {
  margin-top: 1rem;
}

.client-downloads-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.65rem;
}

.download-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.dl-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-size: 0.825rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-sm);
  font-weight: 500;
  text-decoration: none;
  transition: all 0.2s ease;
  line-height: 1.4;
}

/* Direct download .exe, .dmg, .apk, .deb */
.dl-btn-direct {
  background: #EDF7F2;
  color: var(--brand-green);
  border: 1px solid #CDE5D8;
}

.dl-btn-direct:hover {
  background: var(--brand-green);
  color: #FFFFFF;
}

/* Official release page (GitHub Releases) */
.dl-btn-release {
  background: var(--bg-surface);
  color: var(--text-regular);
  border: 1px solid var(--border-light);
}

.dl-btn-release:hover {
  background: var(--brand-accent);
  color: #FFFFFF;
  border-color: var(--brand-accent);
}

/* App Store */
.dl-btn-store {
  background: #F3F4F6;
  color: #1F2937;
  border: 1px solid #E5E7EB;
}

.dl-btn-store:hover {
  background: #111827;
  color: #FFFFFF;
}

/* Official Site / Repo */
.dl-btn-repo {
  background: #FDF9F6;
  color: var(--brand-accent);
  border: 1px solid #F8D3BF;
}

.dl-btn-repo:hover {
  background: var(--brand-accent);
  color: #FFFFFF;
}

.router-warning-note {
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-left: 3px solid #D97706;
  color: #92400E;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  margin-top: 0.75rem;
}

.no-download-notice {
  background: #F9FAFB;
  border: 1px dashed #D1D5DB;
  color: #6B7280;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* ==========================================================================
   Global Cloud (全球云) Featured Showcase & Top Announcement Banner
   ========================================================================== */
.top-promo-banner {
  background: linear-gradient(90deg, #1A3A34 0%, #244C43 50%, #1A3A34 100%);
  color: #FFFFFF;
  padding: 0.45rem 1rem;
  font-size: 0.85rem;
  text-align: center;
  position: relative;
  z-index: 101;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.top-promo-banner a {
  color: #FFD4BC;
  font-weight: 600;
  text-decoration: underline;
  margin-left: 0.35rem;
  transition: color 0.2s ease;
}

.top-promo-banner a:hover {
  color: #FFFFFF;
}

.top-promo-badge {
  background: var(--brand-accent);
  color: #FFFFFF;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 0.5rem;
  letter-spacing: 0.02em;
}

.global-cloud-featured {
  background: linear-gradient(135deg, #FFFFFF 0%, #F5FBF8 50%, #FFF8F3 100%);
  border: 2px solid var(--brand-accent);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  margin: 2rem 0;
  box-shadow: 0 6px 20px rgba(232, 122, 62, 0.12);
  position: relative;
  overflow: hidden;
}

.featured-ribbon {
  position: absolute;
  top: 18px;
  right: -32px;
  transform: rotate(45deg);
  background: var(--brand-accent);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 2.8rem;
  text-align: center;
  box-shadow: 0 2px 4px rgba(0,0,0,0.15);
  letter-spacing: 0.05em;
  pointer-events: none;
}

.gc-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.85rem;
  flex-wrap: wrap;
}

.gc-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.gc-badge {
  background: #FFF0E6;
  color: #D3672D;
  border: 1px solid #FDC8AB;
  font-size: 0.8rem;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-weight: 600;
}

.gc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin: 1.25rem 0;
}

.gc-item {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
}

.gc-item-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.gc-item-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-green);
  margin-top: 0.2rem;
}

.gc-cta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px dashed rgba(232, 122, 62, 0.35);
}

.gc-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--brand-accent);
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 12px rgba(232, 122, 62, 0.3);
  transition: all 0.2s ease;
  text-decoration: none;
}

.gc-btn:hover {
  background: var(--brand-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(232, 122, 62, 0.4);
}

.table-row-highlight {
  background-color: #FFF9F5 !important;
  font-weight: 600;
}

.table-row-highlight td {
  border-bottom: 2px solid #FDC8AB !important;
}

@media (max-width: 768px) {
  .gc-grid {
    grid-template-columns: 1fr;
  }
  .featured-ribbon {
    display: none;
  }
}

/* OS Category Grid for Client Downloads */
.os-category-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 1.5rem 0 2.25rem;
}

.os-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-decoration: none;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  box-shadow: var(--shadow-sm);
}

.os-card:hover {
  border-color: var(--brand-accent);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.os-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.os-icon {
  font-size: 1.6rem;
  line-height: 1;
}

.os-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--brand-green);
  margin: 0;
}

.os-count-badge {
  font-size: 0.75rem;
  background: var(--bg-subtle);
  color: var(--text-muted);
  padding: 2px 8px;
  border-radius: 12px;
  margin-left: auto;
  font-weight: 600;
}

.os-desc {
  font-size: 0.85rem;
  color: var(--text-regular);
  line-height: 1.5;
  margin-bottom: 1rem;
}

.os-link-action {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--brand-accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

@media (max-width: 900px) {
  .os-category-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .os-category-grid {
    grid-template-columns: 1fr;
  }
}

/* Scenario-Specific Airport Recommendations Section */
.scenario-airports-section {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2.5rem 0;
  box-shadow: var(--shadow-sm);
}

.scenario-header {
  border-left: 4px solid var(--brand-accent);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
}

.scenario-header h2 {
  margin: 0;
  font-size: 1.35rem;
  color: var(--brand-green);
}

.scenario-header p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.scenario-cards-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.scenario-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  transition: all 0.2s ease;
  position: relative;
}

.scenario-card:hover {
  border-color: var(--border-focus);
  background: #FFFFFF;
  box-shadow: var(--shadow-sm);
}

.scenario-card.featured-card {
  background: #FFFBF7;
  border: 2px solid var(--brand-accent);
  box-shadow: 0 4px 16px rgba(232, 122, 62, 0.12);
}

.scenario-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.scenario-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-green);
  margin: 0;
}

.scenario-card.featured-card .scenario-card-title {
  color: var(--brand-accent);
}

.scenario-card-price {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--brand-accent);
  background: #FFF0E6;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.scenario-card-desc {
  font-size: 0.9rem;
  color: var(--text-regular);
  line-height: 1.6;
  margin: 0.5rem 0 1rem;
}

.scenario-card-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--border-light);
}

/* ==========================================================================
   Comprehensive Mobile Viewport Overrides (Final Cascade)
   ========================================================================== */
@media (max-width: 768px) {
  .scenario-airports-section {
    padding: 1.15rem 0.85rem;
    margin: 1.5rem 0;
  }

  .scenario-card {
    padding: 0.95rem;
  }

  .scenario-card-top {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.35rem;
  }

  .scenario-card-price {
    font-size: 0.85rem;
  }

  .scenario-card-desc {
    font-size: 0.875rem;
    line-height: 1.55;
    margin: 0.4rem 0 0.85rem;
  }

  .global-cloud-featured {
    padding: 1.25rem 0.9rem !important;
  }

  .gc-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}

@media (max-width: 640px) {
  .scenario-card-actions,
  .airport-actions,
  .gc-cta-bar {
    flex-direction: column !important;
    align-items: stretch !important;
    gap: 0.65rem !important;
  }

  .scenario-card-actions .cta-button,
  .airport-actions .cta-button,
  .gc-btn {
    width: 100% !important;
    justify-content: center !important;
    text-align: center !important;
    min-height: 42px !important;
    font-size: 0.925rem !important;
    box-sizing: border-box !important;
  }

  .coupon-box {
    width: 100% !important;
    justify-content: space-between !important;
    box-sizing: border-box !important;
    padding: 0.45rem 0.75rem !important;
  }

  .os-category-grid {
    grid-template-columns: 1fr !important;
    gap: 1rem !important;
  }

  .dl-btn {
    width: 100% !important;
    box-sizing: border-box !important;
    justify-content: flex-start !important;
  }
}

@media (max-width: 380px) {
  body {
    font-size: 0.9rem;
  }

  h1 {
    font-size: 1.25rem !important;
  }

  h2 {
    font-size: 1.15rem !important;
  }

  .brand-logo img {
    width: 28px;
    height: 28px;
  }

  .brand-name {
    font-size: 0.875rem;
  }

  .search-input {
    width: 75px;
  }

  .search-input:focus {
    width: 100px;
  }
}