/* ==========================================================================
   天航机场官网 (tianhang.mom) - 官方极速原生核心样式表
   零第三方依赖 · 纯原生 HTML5/CSS3 · 毫秒级秒开响应 · 航空超音速深空美学
   ========================================================================== */

:root {
  --bg-main: #050b16;
  --bg-card: rgba(11, 23, 44, 0.75);
  --bg-card-hover: rgba(16, 34, 66, 0.9);
  --bg-card-alt: rgba(7, 16, 32, 0.65);
  --border-color: rgba(192, 132, 252, 0.18);
  --border-focus: rgba(216, 180, 254, 0.6);

  /* 冰淡紫色核心调色盘 (Ice Lavender Theme) */
  --primary: #c084fc;
  --primary-hover: #d8b4fe;
  --primary-glow: rgba(192, 132, 252, 0.45);

  --ice-lavender-light: #f3e8ff;
  --ice-lavender: #d8b4fe;
  --ice-lavender-medium: #c084fc;
  --ice-lavender-dark: #9333ea;
  --ice-lavender-glow: rgba(192, 132, 252, 0.5);

  --accent-cyan: #38bdf8;
  --accent-sky: #818cf8;
  --accent-blue: #a855f7;
  --accent-gold: #fbbf24;
  --accent-purple: #c084fc;
  --accent-green: #10b981;

  --text-main: #f8fafc;
  --text-sub: #cbd5e1;
  --text-muted: #94a3b8;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 26px;

  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-base);
  background-color: var(--bg-main);
  color: var(--text-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  position: relative;
  min-height: 100vh;
  line-height: 1.65;
  overflow-x: hidden;
  background-color: var(--bg-main);
}

/* 纯原生全屏动态 Canvas 容器 */
#dynamic-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
  opacity: 0.9;
}

/* 页面主要包装层 */
.site-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* 通用容器 */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
}

/* 渐变文本 - 冰淡紫色纯净流光 (图一红色框定制) */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 0%, #f3e8ff 22%, #d8b4fe 55%, #c084fc 80%, #9333ea 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 18px rgba(192, 132, 252, 0.45));
}

.gradient-gold {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 统一按钮样式系统 - 主按钮升级为冰淡紫色 (图一红色框定制) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  font-size: 15px;
  padding: 12px 26px;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #f5ebff 0%, #d8b4fe 32%, #c084fc 68%, #9333ea 100%);
  color: #120726;
  font-weight: 700;
  box-shadow: 0 4px 22px rgba(192, 132, 252, 0.45), 0 0 14px rgba(235, 213, 255, 0.3);
  border: 1px solid rgba(243, 232, 255, 0.55);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(192, 132, 252, 0.7), 0 0 24px rgba(243, 232, 255, 0.5);
  background: linear-gradient(135deg, #ffffff 0%, #ebd5ff 38%, #c084fc 75%, #a855f7 100%);
  color: #0b021a;
  border-color: rgba(255, 255, 255, 0.85);
}

.btn-secondary {
  background: rgba(14, 30, 56, 0.7);
  color: #e2e8f0;
  border-color: rgba(56, 189, 248, 0.35);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(24, 48, 88, 0.85);
  border-color: var(--primary);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 15px 36px;
  font-size: 17px;
  border-radius: var(--radius-md);
}

/* 徽章标签 */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 600;
  border-radius: 999px;
  background: rgba(0, 245, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 245, 255, 0.3);
}

.badge-gold {
  background: rgba(251, 191, 36, 0.12);
  color: #fbbf24;
  border-color: rgba(251, 191, 36, 0.4);
}

/* 顶部导航栏 */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(5, 11, 22, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
  transition: all var(--transition-normal);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo-wrapper {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-wrapper img {
  display: block;
  height: 44px;
  width: auto;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--text-sub);
  text-decoration: none;
  font-size: 15px;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width var(--transition-fast);
  border-radius: 2px;
}

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 移动端菜单切换按钮 */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  cursor: pointer;
  width: 32px;
  height: 32px;
  position: relative;
  z-index: 110;
  padding: 0;
}

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-main);
  margin: 5px auto;
  transition: all 0.3s ease-in-out;
  border-radius: 2px;
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* 首页 Hero 区域 */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.hero-title {
  font-size: 46px;
  line-height: 1.25;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.hero-desc {
  font-size: 17px;
  line-height: 1.75;
  color: var(--text-sub);
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 10px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(56, 189, 248, 0.15);
}

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

.stat-number {
  font-size: 26px;
  font-weight: 800;
  color: var(--primary);
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* 右侧科技仪表盘卡片 */
.hero-card {
  background: linear-gradient(135deg, rgba(14, 28, 54, 0.85) 0%, rgba(8, 17, 36, 0.95) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 30px;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 30px rgba(0, 245, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.hero-card::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -80px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
}

.panel-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-sky);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  color: var(--accent-green);
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 20, 38, 0.65);
  border: 1px solid rgba(56, 189, 248, 0.12);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  transition: all var(--transition-fast);
}

.node-row:hover {
  background: rgba(16, 32, 60, 0.85);
  border-color: rgba(0, 245, 255, 0.35);
  transform: translateX(4px);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
}

.node-flag {
  font-size: 18px;
}

.node-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
}

.node-proto {
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-sky);
  margin-left: 6px;
}

.node-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
}

.node-ping {
  color: var(--accent-green);
  font-weight: 700;
}

.node-loss {
  color: var(--text-muted);
}

/* 栏目通用标题 */
.section {
  padding: 80px 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, rgba(5, 11, 22, 0) 0%, rgba(8, 17, 36, 0.6) 50%, rgba(5, 11, 22, 0) 100%);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 54px;
}

.section-header .badge {
  margin-bottom: 12px;
}

.section-title {
  font-size: 34px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  letter-spacing: -0.3px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* 核心特性网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: all var(--transition-normal);
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 245, 255, 0.15);
}

.feature-icon-wrapper {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 245, 255, 0.15) 0%, rgba(59, 130, 246, 0.1) 100%);
  border: 1px solid rgba(0, 245, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 19px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 14px;
  color: var(--text-sub);
  line-height: 1.7;
}

/* ==========================================================================
   价格同排专区 (所有价格要同排)
   桌面端严格四列等宽排列，卡片高度对齐，同排对比一目了然
   ========================================================================== */
.pricing-section {
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-normal);
  position: relative;
  backdrop-filter: blur(12px);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--primary);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45), 0 0 25px rgba(0, 245, 255, 0.2);
}

.pricing-card.featured {
  border-color: var(--primary);
  background: linear-gradient(180deg, rgba(28, 18, 56, 0.85) 0%, rgba(12, 10, 32, 0.95) 100%);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 28px rgba(192, 132, 252, 0.3);
}

.featured-ribbon {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #f5ebff 0%, #c084fc 60%, #9333ea 100%);
  color: #120726;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 14px;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  white-space: nowrap;
  box-shadow: 0 2px 10px rgba(192, 132, 252, 0.4);
}

.pricing-header {
  text-align: center;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(56, 189, 248, 0.12);
  margin-bottom: 20px;
}

.plan-name {
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 13px;
  color: var(--text-muted);
  min-height: 38px;
}

.plan-price-wrapper {
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-top: 14px;
}

.currency {
  font-size: 18px;
  color: var(--accent-sky);
  font-weight: 700;
  margin-right: 2px;
}

.price-number {
  font-size: 40px;
  font-weight: 900;
  color: #ffffff;
  font-family: var(--font-mono);
  line-height: 1;
}

.price-period {
  font-size: 13px;
  color: var(--text-muted);
  margin-left: 4px;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 26px;
}

.pricing-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.5;
}

.feature-check {
  color: var(--primary);
  font-size: 14px;
  line-height: 1.4;
  flex-shrink: 0;
}

.pricing-card .btn {
  width: 100%;
}

.pricing-guarantee {
  text-align: center;
  margin-top: 36px;
  font-size: 14px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
}

.pricing-guarantee span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 客户端支持区域 */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.client-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  text-align: center;
  transition: all var(--transition-fast);
}

.client-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--primary);
  transform: translateY(-4px);
}

.client-icon {
  font-size: 32px;
  margin-bottom: 12px;
}

.client-title {
  font-size: 16px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.client-tools {
  font-size: 12px;
  color: var(--text-muted);
}

/* 知识文章专栏卡片 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  text-decoration: none;
  transition: all var(--transition-normal);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  background: var(--bg-card-hover);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4), 0 0 20px rgba(0, 245, 255, 0.12);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.article-tag {
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(0, 245, 255, 0.12);
  color: var(--primary);
  font-weight: 600;
}

.article-date {
  font-size: 12px;
  color: var(--text-muted);
}

.article-card-title {
  font-size: 18px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

.article-card:hover .article-card-title {
  color: var(--primary);
}

.article-card-desc {
  font-size: 13px;
  color: var(--text-sub);
  line-height: 1.6;
  margin-bottom: 18px;
}

.article-card-link {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-sky);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   用户评价专区 (真实场景·口碑认证)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
  transition: all var(--transition-normal);
}

.review-card:hover {
  transform: translateY(-4px);
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.review-rating {
  color: #fbbf24;
  font-size: 15px;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-sub);
  margin-bottom: 20px;
  font-style: normal;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid rgba(56, 189, 248, 0.1);
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #0284c7 0%, #00f5ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #031024;
  flex-shrink: 0;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 700;
  color: #ffffff;
}

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

/* ==========================================================================
   常见问题 FAQ (手风琴交互)
   ========================================================================== */
.faq-wrapper {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(56, 189, 248, 0.4);
}

.faq-question {
  width: 100%;
  background: transparent;
  border: none;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  text-align: left;
  font-size: 16px;
  font-weight: 600;
  color: #ffffff;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  font-size: 18px;
  font-weight: 400;
  color: var(--accent-sky);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1);
  padding: 0 24px;
  background: rgba(8, 17, 34, 0.4);
}

.faq-item.active .faq-answer {
  max-height: 600px;
  padding: 0 24px 20px;
  transition: max-height 0.3s cubic-bezier(1, 0, 1, 0);
}

.faq-answer p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-sub);
}

/* ==========================================================================
   外链生态专区 (权威开源客户端与测速工具)
   ========================================================================== */
.outbound-section {
  padding: 50px 0;
  border-top: 1px solid rgba(56, 189, 248, 0.12);
}

.outbound-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.outbound-card {
  background: var(--bg-card-alt);
  border: 1px solid rgba(56, 189, 248, 0.12);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.outbound-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--accent-sky);
  transform: translateY(-2px);
}

.outbound-icon {
  font-size: 20px;
}

.outbound-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-main);
}

.outbound-sub {
  font-size: 11px;
  color: var(--text-muted);
}

/* 底部 CTA 通栏 - 冰淡紫色流光 */
.cta-banner {
  margin: 60px 0 20px;
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.22) 0%, rgba(192, 132, 252, 0.08) 100%);
  border: 1px solid rgba(192, 132, 252, 0.38);
  border-radius: var(--radius-xl);
  padding: 50px 30px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(192, 132, 252, 0.2);
}

.cta-banner h2 {
  font-size: 32px;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 14px;
}

.cta-banner p {
  font-size: 16px;
  color: var(--text-sub);
  max-width: 680px;
  margin: 0 auto 28px;
}

/* 页脚 */
.site-footer {
  background: rgba(3, 7, 16, 0.95);
  border-top: 1px solid rgba(56, 189, 248, 0.12);
  padding: 60px 0 30px;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-col {
  display: flex;
  flex-direction: column;
}

.footer-logo {
  display: inline-block;
  margin-bottom: 16px;
}

.footer-logo img {
  height: 40px;
  width: auto;
}

.footer-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 16px;
}

.footer-col-title {
  font-size: 15px;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
  letter-spacing: 0.5px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 13px;
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: var(--text-muted);
}

/* 响应式媒体查询 */
@media (max-width: 1080px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .outbound-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .hero-title {
    font-size: 34px;
  }
  .nav-menu {
    position: fixed;
    top: 74px;
    left: 0;
    width: 100%;
    background: rgba(5, 11, 22, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 30px 20px;
    gap: 20px;
    border-bottom: 1px solid var(--border-color);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .mobile-toggle {
    display: block;
  }
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .outbound-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}