/* 
  一云梯 (1yunti.baby) - 赛迪网联名高转化营销落地页样式
  主字体：正楷（KaiTi / STKaiti）
*/

@import url('https://fonts.googleapis.com/css2?family=Ma+Shan+Zheng&family=Noto+Serif+SC:wght@400;600;700&display=swap');

:root {
  --primary-color: #1e40af;
  --primary-hover: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary-color: #4f46e5;
  --accent-color: #f59e0b;
  --accent-red: #ef4444;
  --success-color: #10b981;
  --dark-bg: #0f172a;
  --card-bg: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --border-color: #e2e8f0;
  --font-kaiti: 'STKaiti', 'KaiTi', '楷体', 'Ma Shan Zheng', 'Noto Serif SC', 'DFKai-SB', serif;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 8px 24px rgba(30, 64, 175, 0.08);
  --shadow-lg: 0 16px 36px rgba(30, 64, 175, 0.12);
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.35);
}

/* 全局重置与楷体应用 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-kaiti);
  color: var(--text-primary);
  background-color: #f8fafc;
  line-height: 1.65;
  letter-spacing: 0.3px;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-kaiti);
  font-weight: 700;
  color: #0f172a;
  line-height: 1.3;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.25s ease;
}

/* 顶部赛迪权威条幅 Header Notification */
.ccid-topbar {
  background: linear-gradient(90deg, #0b132b 0%, #1c2541 50%, #0b132b 100%);
  color: #fbbf24;
  font-size: 0.9rem;
  padding: 8px 0;
  text-align: center;
  border-bottom: 1px solid rgba(251, 191, 36, 0.2);
}

.ccid-topbar .badge-ccid {
  background: #dc2626;
  color: #ffffff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: bold;
  margin-right: 8px;
}

/* 导航栏 Navbar */
.navbar {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 16px !important;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--primary-color);
  background: var(--primary-light);
}

/* 转化按钮 CTA Buttons */
.btn-brand {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 50%, #1e40af 100%);
  color: #ffffff !important;
  font-family: var(--font-kaiti);
  font-size: 1.05rem;
  font-weight: bold;
  padding: 12px 28px;
  border-radius: 50px;
  border: none;
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.btn-brand::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(60deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: rotate(30deg);
  transition: all 0.6s ease;
}

.btn-brand:hover::after {
  left: 100%;
}

.btn-brand:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 28px rgba(37, 99, 235, 0.5);
  color: #ffffff !important;
}

.btn-brand-lg {
  padding: 16px 36px;
  font-size: 1.2rem;
  border-radius: 50px;
}

.btn-outline-brand {
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  background: transparent;
  font-family: var(--font-kaiti);
  font-weight: bold;
  padding: 10px 24px;
  border-radius: 50px;
  transition: all 0.3s ease;
}

.btn-outline-brand:hover {
  background: var(--primary-color);
  color: #ffffff;
  transform: translateY(-2px);
}

/* 赛迪网联名评测 Hero Section */
.hero-section {
  position: relative;
  padding: 80px 0 60px;
  background: radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.12) 0%, transparent 60%),
              radial-gradient(circle at 10% 80%, rgba(124, 58, 237, 0.08) 0%, transparent 50%),
              #ffffff;
  overflow: hidden;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(239, 246, 255, 0.9);
  border: 1px solid rgba(59, 130, 246, 0.3);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.95rem;
  color: var(--primary-color);
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  color: #0f172a;
  letter-spacing: -0.5px;
  line-height: 1.25;
  margin-bottom: 18px;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #1d4ed8 0%, #7c3aed 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-sub {
  font-size: 1.3rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  font-weight: 500;
}

.hero-stats-bar {
  display: flex;
  gap: 24px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

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

.stat-num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--primary-color);
}

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

/* 赛迪评测认可卡形 Hero Card */
.hero-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.hero-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(90deg, #2563eb, #7c3aed, #f59e0b);
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

/* 核心特性 Feature Cards */
.section-padding {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 50px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.15rem;
  color: var(--text-secondary);
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  height: 100%;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 130, 246, 0.4);
}

.feature-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--primary-light);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 20px;
}

/* 套餐方案 Pricing Cards */
.pricing-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 36px 28px;
  position: relative;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.popular {
  border: 2px solid var(--primary-color);
  box-shadow: var(--shadow-md);
  transform: scale(1.03);
}

.pricing-card.popular:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  color: white;
  font-size: 0.85rem;
  font-weight: bold;
  padding: 4px 18px;
  border-radius: 20px;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

.pricing-price {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary-color);
  margin: 16px 0;
}

.pricing-price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: normal;
}

.pricing-features {
  list-style: none;
  margin: 20px 0 30px;
  padding: 0;
  flex-grow: 1;
}

.pricing-features li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.05rem;
  color: var(--text-secondary);
}

.pricing-features li i {
  color: var(--success-color);
  font-size: 1.1rem;
}

/* 节点分布 Global Nodes */
.node-chip {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 600;
  transition: all 0.25s ease;
}

.node-chip:hover {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.node-chip img {
  width: 28px;
  height: 20px;
  border-radius: 3px;
  object-fit: cover;
}

/* 常见问题 FAQ */
.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 12px !important;
  margin-bottom: 12px;
  overflow: hidden;
}

.accordion-button {
  font-family: var(--font-kaiti);
  font-size: 1.1rem;
  font-weight: 700;
  color: #0f172a;
  padding: 18px 24px;
}

.accordion-button:not(.collapsed) {
  background-color: var(--primary-light);
  color: var(--primary-color);
}

.accordion-body {
  font-size: 1.05rem;
  color: var(--text-secondary);
  padding: 18px 24px;
}

/* 赛迪网权威测评表格 Table Style */
.eval-table-container {
  background: #ffffff;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.eval-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 1.05rem;
}

.eval-table th {
  background: #f1f5f9;
  color: var(--text-primary);
  padding: 14px 20px;
  font-weight: 700;
  text-align: left;
  border-bottom: 2px solid var(--border-color);
}

.eval-table td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

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

.tag-highlight {
  background: rgba(16, 185, 129, 0.15);
  color: #047857;
  padding: 3px 10px;
  border-radius: 6px;
  font-weight: bold;
  font-size: 0.9rem;
}

/* 网页最底部 60 个 SEO 标签 Styles */
.seo-tags-section {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 40px;
  border-top: 1px solid #1e293b;
}

.seo-tags-header {
  color: #f8fafc;
  font-size: 1.4rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.seo-tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.seo-tag-item {
  background: rgba(30, 41, 59, 0.8);
  border: 1px solid rgba(51, 65, 85, 0.8);
  color: #cbd5e1;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-family: var(--font-kaiti);
  transition: all 0.25s ease;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.seo-tag-item:hover {
  background: var(--primary-color);
  color: #ffffff;
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.4);
}

/* Footer Bottom */
.footer-bottom {
  background: #090d16;
  color: #64748b;
  padding: 24px 0;
  font-size: 0.95rem;
  border-top: 1px solid #1e293b;
}

.scroll-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background: var(--primary-color);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.2);
  z-index: 99;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.scroll-to-top.active {
  opacity: 1;
  visibility: visible;
}

.scroll-to-top:hover {
  background: var(--primary-hover);
  color: white;
  transform: translateY(-4px);
}

/* 响应式 Mobile & PC Adaptations */
@media (max-width: 991px) {
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-sub {
    font-size: 1.1rem;
  }
  .pricing-card.popular {
    transform: none;
  }
  .pricing-card.popular:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 767px) {
  .hero-title {
    font-size: 1.85rem;
  }
  .btn-brand-lg {
    width: 100%;
    padding: 14px 20px;
  }
  .hero-stats-bar {
    flex-wrap: wrap;
    gap: 16px;
  }
  .seo-tag-item {
    font-size: 0.82rem;
    padding: 5px 10px;
  }
}