/* 赔钱机场 - 高端消费 / 明亮雅致风 Style */
:root {
  --bg-main: #FAF8F5;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --primary-gold: #C5A059;
  --primary-gold-dark: #A47D34;
  --gold-gradient: linear-gradient(135deg, #E6C875 0%, #C5A059 50%, #9B782B 100%);
  --gold-glow: 0 10px 30px rgba(197, 160, 89, 0.28);
  --dark-accent: #111827;
  --dark-gradient: linear-gradient(135deg, #1F2937 0%, #111827 100%);
  --text-main: #1C1917;
  --text-muted: #57534E;
  --text-light: #78716C;
  --border-gold: rgba(197, 160, 89, 0.25);
  --border-subtle: rgba(0, 0, 0, 0.06);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --shadow-subtle: 0 10px 30px rgba(0, 0, 0, 0.04);
  --shadow-card: 0 20px 40px rgba(197, 160, 89, 0.08), 0 1px 3px rgba(0,0,0,0.02);
  --shadow-hover: 0 30px 60px rgba(197, 160, 89, 0.16);
  --transition-fast: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 10% 20%, rgba(230, 200, 117, 0.08) 0%, transparent 40%),
              radial-gradient(circle at 90% 80%, rgba(197, 160, 89, 0.06) 0%, transparent 40%),
              var(--bg-main);
}

a {
  text-decoration: none;
  color: inherit;
}

/* 容器限制 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 页眉 Header */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 248, 245, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-gold);
  transition: var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.logo-brand:hover {
  transform: scale(1.03);
}

.logo-icon {
  width: 42px;
  height: 42px;
  background: var(--gold-gradient);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--gold-glow);
  color: #fff;
  font-weight: 800;
  font-size: 20px;
}

.brand-text {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, #1C1917 0%, #A47D34 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--primary-gold-dark);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gold-gradient);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-link:hover::after {
  width: 100%;
}

.header-cta-group {
  display: flex;
  gap: 12px;
}

/* 按钮通用规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 700;
  transition: all var(--transition-smooth);
  cursor: pointer;
  border: none;
  gap: 8px;
  text-align: center;
}

.btn-primary {
  background: var(--gold-gradient);
  color: #FFFFFF;
  box-shadow: var(--gold-glow);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(197, 160, 89, 0.45);
}

.btn-secondary {
  background: var(--dark-gradient);
  color: #F9FAFB;
  border: 1px solid rgba(230, 200, 117, 0.4);
  box-shadow: 0 10px 25px rgba(17, 24, 39, 0.15);
}

.btn-secondary:hover {
  transform: translateY(-3px);
  background: #1F2937;
  border-color: var(--primary-gold);
  box-shadow: 0 15px 35px rgba(17, 24, 39, 0.25);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-gold);
}

.btn-outline:hover {
  background: rgba(197, 160, 89, 0.1);
  border-color: var(--primary-gold);
}

/* 章节 Section 通用 */
.section {
  padding: 100px 0;
  position: relative;
}

.section-title-wrap {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px auto;
}

.section-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(197, 160, 89, 0.12);
  border: 1px solid rgba(197, 160, 89, 0.3);
  border-radius: var(--radius-full);
  color: var(--primary-gold-dark);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.section-title {
  font-size: 38px;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-muted);
}

/* 主视觉 Hero Area */
.hero-section {
  padding: 120px 0 90px 0;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.hero-title {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -1.2px;
  color: var(--text-main);
}

.hero-title-gradient {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 19px;
  color: var(--text-muted);
  line-height: 1.6;
}

.hero-btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 12px;
}

.hero-stats-row {
  display: flex;
  gap: 32px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--border-gold);
}

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

.stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--primary-gold-dark);
}

.stat-label {
  font-size: 13px;
  color: var(--text-light);
  font-weight: 600;
}

/* 动态卡片 Graphic Card */
.hero-visual {
  position: relative;
}

.visual-card-glass {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-hover);
  position: relative;
  overflow: hidden;
  animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.node-speed-box {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.speed-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 255, 255, 0.9);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
}

.speed-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.flag-icon {
  font-size: 24px;
}

.node-name {
  font-weight: 700;
  font-size: 15px;
}

.node-ping {
  font-size: 13px;
  color: #10B981;
  font-weight: 700;
}

.speed-bar-bg {
  width: 100px;
  height: 8px;
  background: #E5E7EB;
  border-radius: 4px;
  overflow: hidden;
}

.speed-bar-fill {
  height: 100%;
  background: var(--gold-gradient);
  border-radius: 4px;
  animation: pulseBar 2.5s infinite alternate;
}

@keyframes pulseBar {
  0% { width: 80%; }
  100% { width: 98%; }
}

/* 核心优势 3大图文卡片 */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.adv-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-smooth);
}

.adv-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-gold);
}

.adv-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: rgba(197, 160, 89, 0.12);
  color: var(--primary-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 24px;
}

.adv-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
}

.adv-desc {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 流媒体与 AI 支持图卡 */
.support-media-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.media-card {
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow-subtle);
  transition: transform var(--transition-fast);
}

.media-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-gold);
}

.media-icon-box {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: #FAF8F5;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
}

.media-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
}

.media-sub {
  font-size: 12px;
  color: var(--text-light);
}

/* 价格对比表 Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.price-card {
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: all var(--transition-smooth);
}

.price-card.popular {
  border: 2px solid var(--primary-gold);
  transform: scale(1.04);
  box-shadow: var(--shadow-hover);
  background: linear-gradient(180deg, #FFFFFF 0%, #FFFDF9 100%);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold-gradient);
  color: #fff;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.price-plan-name {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
}

.price-val-box {
  margin: 16px 0 24px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-currency {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary-gold-dark);
}

.price-num {
  font-size: 42px;
  font-weight: 900;
  color: var(--text-main);
  line-height: 1;
}

.price-unit {
  font-size: 14px;
  color: var(--text-light);
}

.price-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.price-feature-item {
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.price-feature-item svg {
  color: #10B981;
  flex-shrink: 0;
}

/* SEO 文章板块 (15 篇图卡) */
.articles-section {
  background: rgba(255, 255, 255, 0.6);
  border-top: 1px solid var(--border-gold);
  border-bottom: 1px solid var(--border-gold);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
  transition: all var(--transition-smooth);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--primary-gold);
}

.article-cover-placeholder {
  height: 160px;
  background: linear-gradient(135deg, rgba(230, 200, 117, 0.2) 0%, rgba(197, 160, 89, 0.4) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-gold-dark);
  font-size: 36px;
  font-weight: 800;
}

.article-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-tag {
  font-size: 12px;
  font-weight: 700;
  color: var(--primary-gold-dark);
  background: rgba(197, 160, 89, 0.1);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  width: fit-content;
  margin-bottom: 12px;
}

.article-card-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: var(--text-main);
}

.article-card-snippet {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-read-btn {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-gold-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 用户评价 Customer Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.review-card {
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 30px;
  box-shadow: var(--shadow-subtle);
}

.review-stars {
  color: #F59E0B;
  margin-bottom: 16px;
  font-size: 16px;
}

.review-quote {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  font-style: italic;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gold-gradient);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.reviewer-name {
  font-weight: 700;
  font-size: 15px;
}

.reviewer-title {
  font-size: 12px;
  color: var(--text-light);
}

/* FAQ 问答区 */
.faq-wrap {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-md);
  padding: 24px 30px;
  box-shadow: var(--shadow-subtle);
}

.faq-q {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.faq-q svg {
  color: var(--primary-gold-dark);
}

.faq-a {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 页脚 Footer */
.footer {
  background: var(--dark-gradient);
  color: #E5E7EB;
  padding: 70px 0 30px 0;
  border-top: 1px solid var(--border-gold);
}

.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  margin-bottom: 40px;
}

.footer-brand {
  font-size: 26px;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.footer-desc {
  font-size: 15px;
  color: #9CA3AF;
  max-width: 500px;
  margin-bottom: 28px;
}

.footer-nav-list {
  display: flex;
  justify-content: center;
  gap: 36px;
  list-style: none;
  margin-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 30px;
  width: 100%;
}

.footer-nav-item a {
  font-size: 16px;
  font-weight: 700;
  color: #F3F4F6;
  transition: color var(--transition-fast);
}

.footer-nav-item a:hover {
  color: var(--primary-gold);
}

/* 页脚友情链接 (PBN dofollow) */
.footer-pbn-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
  padding: 16px 24px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(197, 160, 89, 0.2);
  border-radius: var(--radius-md);
}

.pbn-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--primary-gold);
}

.pbn-link {
  font-size: 14px;
  color: #D1D5DB;
  transition: color var(--transition-fast);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.pbn-link:hover {
  color: var(--primary-gold);
}

.footer-copy {
  font-size: 13px;
  color: #6B7280;
  text-align: center;
}

/* 右侧浮动章节上下滑动控制器 (Floating Arrow Controller) */
.floating-arrow-ctrl {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.arrow-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-gold);
  color: var(--primary-gold-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.arrow-btn:hover {
  background: var(--gold-gradient);
  color: #FFFFFF;
  transform: scale(1.12);
  box-shadow: var(--gold-glow);
}

.arrow-btn:active {
  transform: scale(0.95);
}

/* 响应式媒体查询 @media */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .support-media-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .header-inner {
    height: 70px;
  }
  .nav-menu {
    display: none; /* 移动端保持纯粹简易 */
  }
  .hero-title {
    font-size: 34px;
  }
  .hero-desc {
    font-size: 16px;
  }
  .hero-btn-group {
    flex-direction: column;
    width: 100%;
  }
  .btn {
    width: 100%;
    padding: 14px 20px;
  }
  .advantages-grid, .pricing-grid, .articles-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  .price-card.popular {
    transform: none;
  }
  .footer-nav-list {
    flex-direction: column;
    gap: 16px;
  }
  .floating-arrow-ctrl {
    right: 12px;
  }
  .arrow-btn {
    width: 40px;
    height: 40px;
  }
}