/* ==========================================================================
   GieGie Cloud (giegie.homes) - 官方原生纯 CSS 样式库
   极速秒开 | 零框架依赖 | 赛博暗夜玻璃拟态 | 响应式多端适配
   ========================================================================== */

:root {
  --bg-primary: #07090e;
  --bg-secondary: #0d121f;
  --bg-card: rgba(18, 24, 38, 0.75);
  --bg-card-hover: rgba(26, 35, 56, 0.85);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --border-color: rgba(255, 255, 255, 0.09);
  --border-glow: rgba(0, 245, 255, 0.35);
  --border-purple: rgba(139, 92, 246, 0.35);
  
  --primary: #00f5ff;
  --primary-glow: rgba(0, 245, 255, 0.4);
  --primary-dark: #00bcd4;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  --accent-gradient: linear-gradient(135deg, #00f5ff 0%, #3b82f6 50%, #8b5cf6 100%);
  --accent-gradient-hover: linear-gradient(135deg, #38bdf8 0%, #6366f1 50%, #a855f7 100%);
  --gold: #f59e0b;
  --success: #10b981;

  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 9999px;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 30px rgba(0, 245, 255, 0.25);
  --shadow-purple: 0 0 35px rgba(139, 92, 246, 0.25);

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "Fira Code", "JetBrains Mono", Consolas, Menlo, monospace;
}

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

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

body {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
  background-color: var(--bg-primary);
}

/* Canvas 动态背景层 */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* 页面主要容器与层级提升 */
.page-wrapper {
  position: relative;
  z-index: 1;
}

.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* 通用排版 */
h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

p {
  color: var(--text-secondary);
}

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

/* 按钮通用组件 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #07090e;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(0, 245, 255, 0.35);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  box-shadow: 0 6px 28px rgba(0, 245, 255, 0.55);
  transform: translateY(-2px);
  color: #000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-blog {
  background: rgba(139, 92, 246, 0.15);
  border: 1px solid var(--border-purple);
  color: #c4b5fd;
}

.btn-blog:hover {
  background: rgba(139, 92, 246, 0.25);
  border-color: #a78bfa;
  color: #ffffff;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 13.5px;
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

/* 导航栏 (Navbar) */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 14px 0;
  background: rgba(7, 9, 14, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
}

.nav-logo {
  height: 48px;
  width: auto;
  display: block;
}

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

.nav-link {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-secondary);
  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 0.25s ease;
}

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

.nav-badge-hot {
  display: inline-block;
  font-size: 10px;
  font-weight: 700;
  background: linear-gradient(135deg, #ef4444, #f59e0b);
  color: #fff;
  padding: 1px 6px;
  border-radius: var(--radius-pill);
  margin-left: 4px;
  vertical-align: middle;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  cursor: pointer;
  padding: 8px;
}

/* 首屏横幅区 (Hero Section) */
.hero {
  position: relative;
  padding: 90px 0 70px;
  text-align: center;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 350px;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.15) 0%, rgba(139, 92, 246, 0.08) 50%, transparent 70%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(0, 245, 255, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--primary);
  margin-bottom: 24px;
  box-shadow: 0 0 20px rgba(0, 245, 255, 0.15);
}

.hero-tag-pulse {
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--primary);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.7; }
}

.hero-title {
  font-size: 54px;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  line-height: 1.18;
}

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

.hero-subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  max-width: 820px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

/* 核心特性数据跑马统计 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 1020px;
  margin: 0 auto;
}

.stat-item {
  padding: 20px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.stat-item:hover {
  border-color: var(--border-glow);
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

.stat-number {
  font-size: 30px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.stat-number span {
  color: var(--primary);
}

.stat-desc {
  font-size: 13px;
  color: var(--text-muted);
}

/* 区块公用标题 */
.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 54px;
}

.section-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
}

/* 核心优势卡片区 */
.features-section {
  padding: 80px 0;
  position: relative;
}

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

.feature-card {
  padding: 36px 30px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-glow);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(0, 245, 255, 0.1);
  border: 1px solid rgba(0, 245, 255, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 22px;
  color: var(--primary);
}

.feature-title {
  font-size: 21px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-text {
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 流媒体与 AI 支持图卡 */
.media-ai-section {
  padding: 40px 0 80px;
}

.media-ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.media-card {
  padding: 36px;
  background: linear-gradient(135deg, rgba(13, 18, 31, 0.85) 0%, rgba(20, 28, 48, 0.8) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
}

.media-card-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.badge-stream {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: rgba(239, 68, 68, 0.2);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.badge-ai {
  font-size: 11px;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.media-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-pill);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-main);
  transition: all 0.2s ease;
}

.tag-pill:hover {
  background: rgba(0, 245, 255, 0.12);
  border-color: var(--primary);
  color: var(--primary);
}

/* ==========================================================================
   套餐定价区 (Pricing Section) - 核心要求：所有价格要同排！
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
  position: relative;
}

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

.pricing-card {
  display: flex;
  flex-direction: column;
  padding: 32px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  position: relative;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

/* 热门推荐高亮卡片 */
.pricing-card.featured {
  background: linear-gradient(180deg, rgba(20, 28, 50, 0.95) 0%, rgba(13, 18, 31, 0.9) 100%);
  border: 1.5px solid var(--primary);
  box-shadow: 0 0 35px rgba(0, 245, 255, 0.22);
}

.featured-ribbon {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #07090e;
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  box-shadow: 0 2px 10px rgba(0, 245, 255, 0.4);
  letter-spacing: 0.5px;
}

.plan-header {
  margin-bottom: 20px;
}

.plan-badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.plan-name {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 6px;
}

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

.plan-price-wrap {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.price-currency {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary);
  vertical-align: top;
  margin-right: 2px;
}

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

.price-period {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-left: 4px;
}

.price-sub {
  font-size: 11.5px;
  color: var(--primary);
  margin-top: 6px;
  font-weight: 600;
}

.plan-features {
  list-style: none;
  margin-bottom: 30px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 13.5px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.45;
}

.check-icon {
  color: var(--primary);
  flex-shrink: 0;
  margin-top: 2px;
  font-weight: bold;
}

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

/* 深度特性解析区 (Why Choose Section) */
.why-section {
  padding: 80px 0;
}

.why-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  margin-bottom: 70px;
}

.why-row.reverse {
  /* 自然左右交错排列，无需 direction: rtl */
}

.why-content h3 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 18px;
}

.why-content p {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.why-list {
  list-style: none;
  margin-bottom: 24px;
}

.why-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14.5px;
  color: var(--text-main);
  margin-bottom: 10px;
}

/* 隐私安全防护仪表盘 (方案 A：现代化安全看板) */
.security-status-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  backdrop-filter: blur(14px);
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.security-status-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #10b981, #00f5ff, #8b5cf6);
}

.security-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--border-color);
}

.security-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
}

.security-shield-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #10b981;
}

.security-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.security-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--success);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: var(--radius-pill);
}

.security-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.security-row:last-of-type {
  border-bottom: none;
}

.security-icon-box {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  margin-top: 2px;
}

.security-info {
  flex-grow: 1;
}

.security-item-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 3px;
  flex-wrap: wrap;
  gap: 6px;
}

.security-item-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

.security-tag {
  font-size: 11.5px;
  font-weight: 700;
  font-family: var(--font-mono);
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(0, 245, 255, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 245, 255, 0.2);
}

.security-tag.tag-success {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
  border-color: rgba(16, 185, 129, 0.3);
}

.security-tag.tag-purple {
  background: rgba(139, 92, 246, 0.12);
  color: #c084fc;
  border-color: rgba(139, 92, 246, 0.3);
}

.security-item-desc {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.5;
}

.security-footer-audit {
  margin-top: 16px;
  padding: 10px 14px;
  background: rgba(16, 185, 129, 0.06);
  border: 1px dashed rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 12.5px;
  color: #34d399;
  font-weight: 500;
}

/* 动态数据面板 */
.network-status-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  backdrop-filter: blur(12px);
}

.status-node-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 0;
  border-bottom: 1px solid var(--border-color);
  font-size: 13.5px;
}

.status-node-row:last-child {
  border-bottom: none;
}

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

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

.node-ping {
  font-family: var(--font-mono);
  color: var(--success);
  font-weight: 600;
}

/* 用户评价跑马灯区 (Testimonials Section) */
.reviews-section {
  padding: 80px 0;
  overflow: hidden;
  position: relative;
}

.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  padding: 28px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  transition: all 0.3s ease;
}

.review-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.review-stars {
  color: var(--gold);
  font-size: 15px;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

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

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00f5ff, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  color: #07090e;
}

.author-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-main);
}

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

/* 常见问题 (FAQ Section) */
.faq-section {
  padding: 80px 0;
}

.faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  overflow: hidden;
  transition: all 0.25s ease;
}

.faq-item[open] {
  border-color: var(--border-glow);
  box-shadow: 0 4px 20px rgba(0, 245, 255, 0.1);
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-question::-webkit-details-marker {
  display: none;
}

.faq-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: transform 0.25s ease;
  color: var(--primary);
  flex-shrink: 0;
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
  background: var(--primary);
  color: #07090e;
}

.faq-answer {
  padding: 0 24px 22px;
  font-size: 14.5px;
  color: var(--text-secondary);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  padding-top: 16px;
}

/* 底部二次行动呼吁 (Bottom CTA Section) */
.bottom-cta-section {
  padding: 90px 0;
  text-align: center;
  position: relative;
}

.cta-box {
  padding: 60px 36px;
  background: linear-gradient(135deg, rgba(20, 28, 50, 0.85) 0%, rgba(13, 18, 31, 0.95) 100%);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  box-shadow: 0 0 50px rgba(0, 245, 255, 0.15);
  max-width: 960px;
  margin: 0 auto;
}

.cta-box h2 {
  font-size: 38px;
  font-weight: 900;
  margin-bottom: 18px;
}

.cta-box p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
}

/* 页脚 (Footer) - 核心要求：仅保留四个标题打开新页面 */
.footer {
  background: #040609;
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 36px;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
  gap: 24px;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.footer-nav a {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-secondary);
}

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

.footer-bottom {
  padding-top: 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 13px;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 16px;
}

/* 模态弹窗 / 内容层 (用于轻量级展现条款) */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(8px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  max-width: 700px;
  width: 100%;
  max-height: 80vh;
  overflow-y: auto;
  padding: 32px;
  position: relative;
}

/* ==========================================================================
   响应式断点适配 (@media)
   ========================================================================== */
@media (max-width: 1180px) {
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 992px) {
  .hero-title {
    font-size: 42px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .media-ai-grid {
    grid-template-columns: 1fr;
  }
  .why-row, .why-row.reverse {
    grid-template-columns: 1fr;
    gap: 32px;
    direction: ltr;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(7, 9, 14, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-color);
  }
  .nav-menu.show {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
  .hero-title {
    font-size: 34px;
  }
  .hero-subtitle {
    font-size: 15.5px;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    flex-direction: column;
    align-items: flex-start;
  }
  .footer-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}