/* ==========================================================================
   飞鱼机场官网信息指南 - 高端商务·价格决策样式表
   色彩体系：珍珠白基底 (#F9FAFB / #FFFFFF)、深石墨文字与结构 (#111827 / #1F2937)、暖铜色点缀与决策标签 (#B45309 / #C87D55)
   ========================================================================== */

:root {
  --bg-primary: #F9FAFB;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F3F4F6;
  --bg-dark: #111827;
  --bg-dark-card: #1F2937;
  
  --text-primary: #111827;
  --text-secondary: #4B5563;
  --text-muted: #6B7280;
  --text-on-dark: #F9FAFB;
  --text-on-dark-muted: #9CA3AF;
  
  --copper-primary: #B45309;
  --copper-hover: #92400E;
  --copper-light: #FEF3C7;
  --copper-border: #FCD34D;
  --copper-tag: #D97706;
  
  --border-light: #E5E7EB;
  --border-strong: #D1D5DB;
  --border-dark: #374151;
  
  --success-color: #065F46;
  --success-bg: #ECFDF5;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  
  --max-w: 1200px;
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
}

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

/* 焦点与无障碍跳步 */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--copper-primary);
  color: #FFFFFF;
  padding: 0.75rem 1.5rem;
  z-index: 9999;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top 0.2s ease;
  text-decoration: none;
}
.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 3px solid var(--copper-primary);
  outline-offset: 2px;
}

/* 容器与版心 */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* 固定导航锚点偏移 */
[id] {
  scroll-margin-top: 5rem;
}

/* 头部导航 Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-light);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  gap: 1rem;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand-logo {
  width: 36px;
  height: 36px;
  display: block;
  object-fit: contain;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  padding: 0.5rem 0.25rem;
  transition: color 0.15s ease;
}
.nav-link:hover, .nav-link.active {
  color: var(--copper-primary);
}

.header-search {
  position: relative;
  min-width: 200px;
}

.search-input {
  width: 100%;
  padding: 0.5rem 0.75rem 0.5rem 2rem;
  font-size: 0.875rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  background-color: var(--bg-surface);
  color: var(--text-primary);
}
.search-icon {
  position: absolute;
  left: 0.65rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.search-results-popover {
  position: absolute;
  top: 100%;
  right: 0;
  left: auto;
  width: 340px;
  margin-top: 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: none;
  z-index: 1010;
  max-height: 400px;
  overflow-y: auto;
}
.search-results-popover.active {
  display: block;
}
.search-result-item {
  display: block;
  padding: 0.75rem 1rem;
  text-decoration: none;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}
.search-result-item:hover {
  background-color: var(--bg-surface-elevated);
}
.search-result-item .item-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--copper-primary);
}
.search-result-item .item-desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: 0.2rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* 按钮与 CTA */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  min-height: 44px;
  min-width: 44px;
  line-height: 1.2;
}

.btn-copper {
  background-color: var(--copper-primary);
  color: #FFFFFF;
  border: 1px solid var(--copper-primary);
}
.btn-copper:hover {
  background-color: var(--copper-hover);
  border-color: var(--copper-hover);
  color: #FFFFFF;
}

.btn-outline {
  background-color: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-strong);
}
.btn-outline:hover {
  background-color: var(--bg-surface-elevated);
  border-color: var(--text-secondary);
}

.btn-dark {
  background-color: var(--bg-dark);
  color: #FFFFFF;
  border: 1px solid var(--bg-dark);
}
.btn-dark:hover {
  background-color: #000000;
  color: #FFFFFF;
}

/* 标签体系 Tag */
.badge {
  display: inline-block;
  padding: 0.25rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 9999px;
}
.badge-copper {
  background-color: var(--copper-light);
  color: var(--copper-primary);
  border: 1px solid var(--copper-border);
}
.badge-dark {
  background-color: var(--bg-dark);
  color: #FFFFFF;
}
.badge-success {
  background-color: var(--success-bg);
  color: var(--success-color);
}

/* Hero 首屏 - 曜金飞翼高品质背景 */
.hero-section {
  position: relative;
  background-color: #0b0e14;
  color: var(--text-on-dark);
  padding: 4.5rem 0 5rem;
  border-bottom: 3px solid var(--copper-primary);
  background-image: url('/public/assets/feiyu-obsidian-gold/hero-desktop-1920.webp');
  background-position: center center;
  background-repeat: no-repeat;
  background-size: cover;
  overflow: hidden;
}

/* 极轻微海面光纹与缓慢光线微动 (振幅 <= 8px, 周期 20s, 仅 transform/opacity) */
.hero-section::before {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  right: -8px;
  bottom: -8px;
  background: radial-gradient(ellipse at 72% 35%, rgba(217, 119, 6, 0.12) 0%, rgba(180, 83, 9, 0.04) 50%, transparent 75%);
  pointer-events: none;
  z-index: 1;
  animation: oceanGlimmer 20s ease-in-out infinite alternate;
}

@keyframes oceanGlimmer {
  0% {
    transform: translate3d(0, 0, 0);
    opacity: 0.55;
  }
  50% {
    transform: translate3d(4px, -6px, 0);
    opacity: 0.8;
  }
  100% {
    transform: translate3d(-5px, 3px, 0);
    opacity: 0.65;
  }
}

.hero-section > .container {
  position: relative;
  z-index: 2;
}

.hero-header {
  max-width: 660px;
}

.hero-pretitle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  color: #FFFFFF;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-on-dark-muted);
  line-height: 1.6;
  margin-bottom: 2rem;
}

/* 最低价通告栏（Anchor Callout）- 左侧收紧，完全避让右侧曜金飞鱼 */
.lowest-price-callout {
  max-width: 560px;
  background: rgba(17, 24, 39, 0.88);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-dark);
  border-left: 4px solid var(--copper-primary);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.callout-info {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.callout-label {
  font-size: 0.85rem;
  color: var(--copper-border);
  font-weight: 600;
}

.callout-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: #FFFFFF;
}

.callout-value small {
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-on-dark-muted);
}

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

/* 按钮放到下一行右侧 */
.callout-action {
  display: flex;
  justify-content: flex-end;
  width: 100%;
}

/* 首屏热门套餐网格（3 卡片） */
.hero-plans-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.plan-card {
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.plan-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.plan-card.featured {
  border: 2px solid var(--copper-primary);
  background: #FFFFFF;
}

.plan-ribbon {
  position: absolute;
  top: -12px;
  right: 1.25rem;
}

.plan-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 1.25rem;
  margin-bottom: 1.25rem;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
}

.plan-intent {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 0.25rem;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin: 1rem 0 0.5rem;
}

.plan-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.plan-amount {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.plan-period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

.plan-feature-item svg {
  flex-shrink: 0;
  color: var(--copper-primary);
  margin-top: 2px;
}

.plan-cta-btn {
  width: 100%;
}

.plan-footnote {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: 0.75rem;
}

/* 通用区块 Section */
.section {
  padding: 4.5rem 0;
}

.section-alt {
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3rem;
}

.section-tag {
  color: var(--copper-primary);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

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

/* 套餐对比矩阵表（完整版） */
.table-scroll-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.5rem;
}

.matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9rem;
  min-width: 720px;
}

.matrix-table caption {
  padding: 1rem;
  font-weight: 600;
  text-align: left;
  background-color: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-light);
  color: var(--text-primary);
}

.matrix-table th, .matrix-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-light);
}

.matrix-table thead th {
  background-color: var(--bg-surface-elevated);
  font-weight: 700;
  color: var(--text-primary);
  white-space: nowrap;
}

.matrix-table tbody tr:hover {
  background-color: #FDFBF7;
}

.matrix-table td.highlight {
  font-weight: 700;
  color: var(--copper-primary);
}

/* 决策指南卡片与服务指标 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-box {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
}

.feature-box-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background-color: var(--copper-light);
  color: var(--copper-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.feature-box-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.feature-box-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* FAQ 模块（原生 details/summary） */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.faq-item[open] {
  border-color: var(--copper-primary);
}

.faq-summary {
  padding: 1.25rem 1.5rem;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  user-select: none;
}
.faq-summary::-webkit-details-marker {
  display: none;
}
.faq-summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--copper-primary);
  font-weight: 400;
  transition: transform 0.2s ease;
}
.faq-item[open] .faq-summary::after {
  content: "−";
}

.faq-content {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.925rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-light);
  padding-top: 1rem;
  line-height: 1.7;
}

/* 文章导航网格 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.article-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

.article-card:hover {
  transform: translateY(-2px);
  border-color: var(--copper-primary);
  box-shadow: var(--shadow-md);
}

.article-category {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--copper-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.article-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.75rem;
  line-height: 1.4;
}

.article-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.article-link-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--copper-primary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* 正文文章排版 Prosetext */
.article-container {
  max-width: 820px;
  margin: 3rem auto 5rem;
  background: var(--bg-surface);
  padding: 3rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}
.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--copper-primary);
}

.prose h1 {
  font-size: 2.2rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.prose-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 2rem;
}

.prose h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-light);
}

.prose h3 {
  font-size: 1.2rem;
  font-weight: 600;
  margin: 1.75rem 0 0.75rem;
}

.prose p {
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.prose ul, .prose ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.prose li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.prose blockquote {
  border-left: 4px solid var(--copper-primary);
  background: var(--bg-surface-elevated);
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  font-style: normal;
}

.prose pre {
  background: var(--bg-dark);
  color: #F3F4F6;
  padding: 1.25rem;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  margin: 1.5rem 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--bg-surface-elevated);
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  color: var(--copper-primary);
}

.prose pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.article-cta-box {
  background: var(--copper-light);
  border: 1px solid var(--copper-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin: 2.5rem 0;
  text-align: center;
}

.article-cta-box h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--copper-hover);
  margin-bottom: 0.5rem;
}

.article-cta-box p {
  color: #78350F;
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

/* 页脚 Footer */
.site-footer {
  background-color: var(--bg-dark);
  color: var(--text-on-dark-muted);
  border-top: 1px solid var(--border-dark);
  padding: 3rem 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  align-items: center;
  text-align: center;
}

.footer-nav {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.footer-nav a {
  color: var(--text-on-dark);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.15s ease;
}
.footer-nav a:hover {
  color: var(--copper-primary);
}

.footer-statement {
  font-size: 0.8rem;
  max-width: 680px;
  line-height: 1.6;
}

.footer-copy {
  font-size: 0.75rem;
  color: #6B7280;
}

/* 响应式调整 (360px, 390px, 768px, 1024px) */
@media (max-width: 1024px) {
  .hero-plans-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .site-nav {
    display: none; /* 移动端精简 */
  }
  .hero-section {
    background-image: url('/public/assets/feiyu-obsidian-gold/hero-mobile-900.webp');
    background-position: center top;
    background-size: cover;
  }
  .hero-title {
    font-size: 2rem;
  }
  .hero-plans-grid {
    grid-template-columns: 1fr;
  }
  .features-grid, .articles-grid {
    grid-template-columns: 1fr;
  }
  .lowest-price-callout {
    max-width: 100%;
  }
  .callout-action {
    justify-content: stretch;
  }
  .callout-action .btn {
    width: 100%;
  }
  .article-container {
    padding: 1.5rem;
    margin: 1.5rem auto 3rem;
  }
  .header-search {
    min-width: 150px;
  }
}

@media (max-width: 390px) {
  .hero-title {
    font-size: 1.75rem;
  }
  .hero-section {
    padding: 3rem 0 3.5rem;
  }
  .callout-value {
    font-size: 1.35rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero-section::before {
    animation: none !important;
  }
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}