/* ==========================================================================
   贝贝云 (BeiBei Cloud) - Pelagic Glass-Bubble & Underwater-Caustics Luxury UI
   深海澄澈琉璃美学 · 水下焦散光影 · 气泡悬浮感 · 纯原生 CSS
   ========================================================================== */

/* --------------------------------------------------
   1. 深海色彩体系与 CSS 变量 (Marine Design System)
   -------------------------------------------------- */
:root {
  /* 基础字体与圆角半径 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", Monaco, Consolas, "Liberation Mono", Courier, monospace;
  --transition-smooth: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-caustic: transform 0.2s cubic-bezier(0.2, 0.8, 0.2, 1), box-shadow 0.3s ease;
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 26px;
  --radius-pill: 9999px;

  /* ================= 白天模式 (Sunlit Ocean / 浅海琉璃浅色系 - 默认) ================= */
  --bg-deep: #0e2444;
  --bg-pelagic: #f0f7ff;
  --bg-surface: #ffffff;
  --bg-surface-translucent: rgba(255, 255, 255, 0.78);
  --bg-glass-card: rgba(255, 255, 255, 0.72);
  --bg-glass-card-hover: rgba(255, 255, 255, 0.92);
  --bg-glass-border: rgba(56, 189, 248, 0.35);
  --bg-glass-border-hover: rgba(14, 165, 233, 0.7);

  /* 文字配色 */
  --text-pearl: #0a192f;
  --text-secondary: #334e68;
  --text-muted: #627d98;
  --text-accent: #0284c7;

  /* 品牌深海与水光焦散色 */
  --caustic-cyan: #0284c7;
  --caustic-cyan-glow: rgba(14, 165, 233, 0.22);
  --ocean-sapphire: #0369a1;
  --rim-refraction: rgba(14, 165, 233, 0.4);
  --bubble-border: rgba(56, 189, 248, 0.4);

  /* 按钮与高光渐变 */
  --btn-primary-gradient: linear-gradient(135deg, #0284c7 0%, #0ea5e9 50%, #06b6d4 100%);
  --btn-glow: rgba(14, 165, 233, 0.35);
  --hero-glow: radial-gradient(circle at 50% 20%, rgba(14, 165, 233, 0.18) 0%, rgba(2, 132, 199, 0.05) 50%, transparent 80%);

  /* 阴影 */
  --card-shadow: 0 10px 30px -8px rgba(10, 25, 47, 0.08), inset 0 1px 1px rgba(255, 255, 255, 0.8);
  --card-shadow-hover: 0 20px 45px -10px rgba(2, 132, 199, 0.22), inset 0 1px 2px rgba(255, 255, 255, 1);
  --header-bg: rgba(240, 247, 255, 0.82);
  --header-border: rgba(186, 230, 253, 0.6);
  --tag-bg: rgba(2, 132, 199, 0.08);
  --tag-border: rgba(2, 132, 199, 0.25);
  --tag-color: #0369a1;
}

/* ================= 夜间模式 (Pelagic Abyss / 深海深渊蓝奢华UI) ================= */
[data-theme="dark"] {
  --bg-deep: #030814;
  --bg-pelagic: #071124;
  --bg-surface: #0a1733;
  --bg-surface-translucent: rgba(10, 23, 51, 0.75);
  --bg-glass-card: rgba(13, 33, 66, 0.52);
  --bg-glass-card-hover: rgba(17, 43, 85, 0.75);
  --bg-glass-border: rgba(56, 189, 248, 0.22);
  --bg-glass-border-hover: rgba(56, 189, 248, 0.65);

  /* 珍珠白高对比排版 */
  --text-pearl: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-accent: #38bdf8;

  /* 生物发光水母蓝与水下焦散色 */
  --caustic-cyan: #38bdf8;
  --caustic-cyan-glow: rgba(56, 189, 248, 0.3);
  --ocean-sapphire: #0ea5e9;
  --rim-refraction: rgba(56, 189, 248, 0.35);
  --bubble-border: rgba(56, 189, 248, 0.3);

  /* 渐变与光晕 */
  --btn-primary-gradient: linear-gradient(135deg, #0284c7 0%, #38bdf8 55%, #22d3ee 100%);
  --btn-glow: rgba(56, 189, 248, 0.4);
  --hero-glow: radial-gradient(circle at 50% 25%, rgba(56, 189, 248, 0.16) 0%, rgba(13, 33, 66, 0.5) 55%, transparent 85%);

  /* 阴影 */
  --card-shadow: 0 16px 40px -12px rgba(3, 8, 20, 0.7), inset 0 1px 1px rgba(255, 255, 255, 0.12);
  --card-shadow-hover: 0 24px 55px -10px rgba(56, 189, 248, 0.28), 0 0 25px rgba(56, 189, 248, 0.15), inset 0 1px 2px rgba(255, 255, 255, 0.3);
  --header-bg: rgba(7, 17, 36, 0.85);
  --header-border: rgba(56, 189, 248, 0.18);
  --tag-bg: rgba(56, 189, 248, 0.12);
  --tag-border: rgba(56, 189, 248, 0.3);
  --tag-color: #38bdf8;
}

/* --------------------------------------------------
   2. 基础重置与深海焦散背景设定
   -------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  scroll-padding-top: 86px; /* 锚点跳转平滑缓冲留白 */
  font-size: 16px;
  background-color: var(--bg-pelagic);
  color: var(--text-pearl);
  transition: background-color 0.4s ease, color 0.4s ease;
}

body {
  min-height: 100vh;
  line-height: 1.68;
  background-color: var(--bg-pelagic);
  color: var(--text-pearl);
  overflow-x: hidden;
  position: relative;
}

/* 水下光影焦散波纹动效 (Underwater Caustics Canvas) */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse 80% 50% at 50% -10%, var(--caustic-cyan-glow), transparent 70%),
    radial-gradient(ellipse 60% 40% at 85% 60%, rgba(14, 165, 233, 0.08), transparent 60%),
    radial-gradient(ellipse 50% 50% at 15% 75%, rgba(6, 182, 212, 0.06), transparent 60%);
  pointer-events: none;
  z-index: -2;
  filter: blur(40px);
  animation: caustics-drift 22s ease-in-out infinite alternate;
}

@keyframes caustics-drift {
  0% { transform: scale(1) translateY(0); opacity: 0.85; }
  50% { transform: scale(1.05) translateY(-20px); opacity: 1; }
  100% { transform: scale(0.98) translateY(10px); opacity: 0.85; }
}

/* 柔和升腾的深海微气泡装饰背景 (Ocean Micro-Bubbles) */
.ocean-bubbles-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.bubble {
  position: absolute;
  bottom: -60px;
  background: radial-gradient(circle at 35% 35%, rgba(255, 255, 255, 0.65), rgba(56, 189, 248, 0.25) 60%, transparent 80%);
  border: 1px solid var(--bubble-border);
  border-radius: 50%;
  box-shadow: inset 0 1px 3px rgba(255, 255, 255, 0.7), 0 0 12px var(--caustic-cyan-glow);
  opacity: 0.45;
  animation: rise-bubble 16s infinite linear;
}

.bubble:nth-child(1) { width: 32px; height: 32px; left: 10%; animation-duration: 18s; animation-delay: 0s; }
.bubble:nth-child(2) { width: 18px; height: 18px; left: 24%; animation-duration: 14s; animation-delay: 3s; }
.bubble:nth-child(3) { width: 44px; height: 44px; left: 45%; animation-duration: 22s; animation-delay: 5s; }
.bubble:nth-child(4) { width: 22px; height: 22px; left: 68%; animation-duration: 16s; animation-delay: 2s; }
.bubble:nth-child(5) { width: 36px; height: 36px; left: 88%; animation-duration: 20s; animation-delay: 7s; }
.bubble:nth-child(6) { width: 14px; height: 14px; left: 82%; animation-duration: 12s; animation-delay: 9s; }

@keyframes rise-bubble {
  0% { transform: translateY(0) translateX(0) scale(0.85); opacity: 0; }
  15% { opacity: 0.55; }
  50% { transform: translateY(-50vh) translateX(18px) scale(1); }
  85% { opacity: 0.45; }
  100% { transform: translateY(-110vh) translateX(-15px) scale(1.15); opacity: 0; }
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

img, svg {
  display: block;
  max-width: 100%;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  outline: none;
}

/* --------------------------------------------------
   3. 布局与容器
   -------------------------------------------------- */
.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 95px 0;
  position: relative;
}

/* --------------------------------------------------
   4. 深海琉璃导航栏 (Header & Navbar)
   -------------------------------------------------- */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: var(--header-bg);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-bottom: 1px solid var(--header-border);
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.08);
  transition: background-color 0.4s ease, border-color 0.4s ease;
}

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

/* 品牌 Logo */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.38rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-pearl);
  flex-shrink: 0;
}

.brand-icon {
  width: 40px;
  height: 40px;
  background: var(--btn-primary-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 16px var(--btn-glow), inset 0 1px 1px rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.25);
  transition: var(--transition-smooth);
}

.brand:hover .brand-icon {
  transform: scale(1.05) rotate(-3deg);
  box-shadow: 0 6px 20px var(--btn-glow);
}

.brand-icon svg {
  width: 22px;
  height: 22px;
}

.brand-name {
  background: linear-gradient(135deg, var(--text-pearl) 30%, var(--caustic-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
}

/* 导航主目录 */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 4px;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.nav-link:hover {
  color: var(--text-accent);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2.5px;
  background: var(--btn-primary-gradient);
  transition: width 0.3s cubic-bezier(0.16, 1, 0.3, 1), left 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border-radius: var(--radius-pill);
  box-shadow: 0 0 8px var(--caustic-cyan);
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  left: 0;
}

/* 推荐资讯特殊徽章标签 */
.nav-badge-pill {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: var(--radius-pill);
  background: rgba(56, 189, 248, 0.15);
  color: var(--caustic-cyan);
  border: 1px solid var(--tag-border);
  letter-spacing: 0.02em;
}

/* 导航右侧功能区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 昼夜模式切换按钮（水滴琉璃质感） */
.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  background: var(--bg-surface-translucent);
  border: 1px solid var(--bg-glass-border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition-smooth);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.25), 0 4px 12px rgba(0, 0, 0, 0.06);
}

.theme-toggle-btn:hover {
  border-color: var(--caustic-cyan);
  color: var(--caustic-cyan);
  box-shadow: 0 0 16px var(--caustic-cyan-glow), inset 0 1px 2px rgba(255, 255, 255, 0.5);
  transform: translateY(-1.5px);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.theme-toggle-btn .icon-moon {
  display: block;
}
.theme-toggle-btn .icon-sun {
  display: none;
}

[data-theme="dark"] .theme-toggle-btn .icon-moon {
  display: none;
}
[data-theme="dark"] .theme-toggle-btn .icon-sun {
  display: block;
}

/* 移动端汉堡折叠按钮 */
.mobile-menu-btn {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  border: 1px solid var(--bg-glass-border);
  color: var(--text-pearl);
  background: var(--bg-surface-translucent);
}

.mobile-menu-btn svg {
  width: 22px;
  height: 22px;
}

/* --------------------------------------------------
   5. 通用按钮设计 (Luxury Glass & Ripple Buttons)
   -------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
  cursor: pointer;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--btn-primary-gradient);
  color: #ffffff !important;
  box-shadow: 0 4px 16px var(--btn-glow), inset 0 1px 1px rgba(255, 255, 255, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--btn-glow), inset 0 1px 2px rgba(255, 255, 255, 0.6);
  filter: brightness(1.08);
}

.btn-outline {
  background: var(--bg-glass-card);
  color: var(--text-pearl);
  border: 1px solid var(--bg-glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.1);
}

.btn-outline:hover {
  border-color: var(--caustic-cyan);
  color: var(--caustic-cyan);
  background: var(--bg-glass-card-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--caustic-cyan-glow);
}

.btn-lg {
  padding: 15px 36px;
  font-size: 1.08rem;
  border-radius: var(--radius-md);
}

.btn svg {
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.btn:hover svg {
  transform: translateX(4px);
}

/* --------------------------------------------------
   6. 主视觉区 (Hero Section - Pelagic Depth)
   -------------------------------------------------- */
.hero-section {
  padding: 95px 0 75px 0;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  color: var(--tag-color);
  font-size: 0.9rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  margin-bottom: 28px;
  box-shadow: 0 2px 14px var(--caustic-cyan-glow), inset 0 1px 1px rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(8px);
}

.badge-wave-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--caustic-cyan);
  box-shadow: 0 0 10px var(--caustic-cyan);
  animation: pulse-wave 2s infinite ease-in-out;
}

@keyframes pulse-wave {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.1rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
  color: var(--text-pearl);
}

.hero-title .brand-gradient {
  background: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 50%, #22d3ee 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 40px var(--caustic-cyan-glow);
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.2vw, 1.32rem);
  font-weight: 600;
  color: var(--caustic-cyan);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.hero-brief-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 780px;
  margin: 0 auto 40px auto;
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 54px;
}

/* 性能指标栏 (Pelagic Glass Strip) */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 26px;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  margin-top: 15px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -10px;
  top: 15%;
  height: 70%;
  width: 1px;
  background: var(--bg-glass-border);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 900;
  background: linear-gradient(135deg, var(--text-pearl) 20%, var(--caustic-cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.stat-label {
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* --------------------------------------------------
   7. 通用区域标题
   -------------------------------------------------- */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 58px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--caustic-cyan);
  background: var(--tag-bg);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  border: 1px solid var(--tag-border);
  box-shadow: 0 2px 10px var(--caustic-cyan-glow);
}

.section-title {
  font-size: clamp(2rem, 3.6vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 15px;
  color: var(--text-pearl);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* --------------------------------------------------
   8. 核心优势 (3个深海琉璃图文卡片)
   -------------------------------------------------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

/* 具有表面张力感与动态焦散水光的卡片 */
.glass-ripple-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-caustic);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

/* 水下光影边缘折射高光 */
.glass-ripple-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--caustic-cyan), transparent);
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

.glass-ripple-card:hover {
  transform: translateY(-8px);
  border-color: var(--bg-glass-border-hover);
  box-shadow: var(--card-shadow-hover);
}

.glass-ripple-card:hover::before {
  opacity: 1;
}

.feature-crystal-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-md);
  background: var(--tag-bg);
  color: var(--caustic-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 26px;
  border: 1px solid var(--tag-border);
  box-shadow: 0 4px 18px var(--caustic-cyan-glow), inset 0 1px 2px rgba(255, 255, 255, 0.3);
  transition: var(--transition-smooth);
}

.glass-ripple-card:hover .feature-crystal-icon {
  transform: scale(1.08) rotate(4deg);
  border-color: var(--caustic-cyan);
}

.feature-crystal-icon svg {
  width: 32px;
  height: 32px;
}

.feature-title {
  font-size: 1.4rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: var(--text-pearl);
}

.feature-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.feature-points {
  list-style: none;
  margin-top: auto;
  border-top: 1px dashed var(--bg-glass-border);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.feature-point-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.feature-point-item svg {
  width: 17px;
  height: 17px;
  color: #10b981;
  flex-shrink: 0;
}

/* --------------------------------------------------
   8.1 全球低延迟节点与“除雾清晰聚焦”交互卡片
   (Condensation-clearing & needle-sharp ping focus)
   -------------------------------------------------- */
.routes-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-top: 30px;
}

.route-condense-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  box-shadow: var(--card-shadow);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.route-condense-card:hover {
  border-color: var(--caustic-cyan);
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

/* 水雾遮罩效果 (Simulated condensation mist) */
.route-mist-layer {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.15), transparent 70%);
  backdrop-filter: blur(3px);
  opacity: 0.65;
  transition: opacity 0.35s ease, backdrop-filter 0.35s ease;
  pointer-events: none;
}

.route-condense-card:hover .route-mist-layer {
  opacity: 0;
  backdrop-filter: blur(0px);
}

.route-flag-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.route-name {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-pearl);
}

.route-spec {
  font-size: 0.84rem;
  color: var(--text-muted);
}

/* 针尖般锐利的极低延迟徽章 (Needle-sharp optical ping focus) */
.ping-badge-sharp {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: rgba(16, 185, 129, 0.12);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.3);
  transition: all 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  filter: blur(1px); /* 默认微朦胧 */
}

.route-condense-card:hover .ping-badge-sharp {
  filter: blur(0px); /* 悬浮瞬间如同擦净水汽，针尖般清晰聚焦！ */
  transform: scale(1.06);
  background: rgba(16, 185, 129, 0.22);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.4);
}

.ping-pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 6px #10b981;
}

/* --------------------------------------------------
   9. 流媒体专区 (Streaming Unlocked Showcase)
   -------------------------------------------------- */
.stream-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stream-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 26px 22px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.stream-card:hover {
  transform: translateY(-5px);
  border-color: var(--bg-glass-border-hover);
  box-shadow: var(--card-shadow-hover);
}

.stream-logo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  margin-bottom: 16px;
}

.stream-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: var(--radius-pill);
  background: rgba(56, 189, 248, 0.15);
  color: var(--caustic-cyan);
  border: 1px solid var(--tag-border);
}

.stream-logo-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.stream-card h3,
.stream-card h4 {
  font-size: 1.16rem;
  font-weight: 700;
  color: var(--text-pearl);
  margin-bottom: 8px;
}

.stream-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* --------------------------------------------------
   10. 前沿 AI 工具支持专区 (AI Tools Showcase)
   -------------------------------------------------- */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.ai-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

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

.ai-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  border: 1px solid var(--bg-glass-border);
}

.ai-card h3,
.ai-card h4 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--text-pearl);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-card p {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 18px;
}

.ai-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 700;
  color: #10b981;
  background: rgba(16, 185, 129, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* --------------------------------------------------
   11. 套餐价格对比表 (参考网上真实套餐价格)
   -------------------------------------------------- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 42px 34px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-caustic);
  display: flex;
  flex-direction: column;
  position: relative;
  backdrop-filter: blur(22px);
  -webkit-backdrop-filter: blur(22px);
}

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

/* 热门尊享进阶高光卡片 */
.pricing-card.featured {
  border-color: var(--caustic-cyan);
  background: var(--bg-surface-translucent);
  box-shadow: 0 16px 45px -8px var(--btn-glow), inset 0 1px 2px rgba(255, 255, 255, 0.3);
  transform: scale(1.03);
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-8px);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--btn-primary-gradient);
  color: #ffffff;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px var(--btn-glow);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.pricing-header {
  margin-bottom: 22px;
}

.pricing-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-pearl);
  margin-bottom: 8px;
}

.pricing-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.pricing-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 26px;
}

.currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-pearl);
}

.price-amount {
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-pearl);
  letter-spacing: -0.04em;
  line-height: 1;
  font-family: var(--font-mono);
}

.price-period {
  font-size: 0.92rem;
  color: var(--text-muted);
  font-weight: 600;
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 36px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.pricing-feature-item svg {
  width: 18px;
  height: 18px;
  color: #10b981;
  flex-shrink: 0;
}

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

/* --------------------------------------------------
   12. 用户评价 (Testimonials)
   -------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.testimonial-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 28px 22px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.testimonial-card:hover {
  transform: translateY(-5px);
  border-color: var(--caustic-cyan);
}

.testimonial-stars {
  display: flex;
  gap: 3px;
  color: #f59e0b;
  margin-bottom: 14px;
}

.testimonial-stars svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.testimonial-quote {
  font-size: 0.93rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--bg-glass-border);
  padding-top: 14px;
}

.avatar-bubble {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--btn-primary-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
  box-shadow: 0 4px 12px var(--btn-glow);
  flex-shrink: 0;
}

.author-info h3,
.author-info h5 {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-pearl);
}

.author-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --------------------------------------------------
   13. 常见问题解答 (FAQ)
   -------------------------------------------------- */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-smooth);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.faq-item:hover {
  border-color: var(--caustic-cyan);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 22px 28px;
  font-size: 1.06rem;
  font-weight: 700;
  color: var(--text-pearl);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  background: transparent;
}

.faq-question svg {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  flex-shrink: 0;
}

.faq-item.active .faq-question svg {
  transform: rotate(180deg);
  color: var(--caustic-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
  padding: 0 28px;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding-bottom: 24px;
}

.faq-answer p {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* --------------------------------------------------
   14. 页脚 (Footer) - 严格保留 4 个标题，新窗口打开
   -------------------------------------------------- */
.footer {
  background: var(--bg-surface-translucent);
  border-top: 1px solid var(--bg-glass-border);
  padding: 65px 0 38px 0;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: var(--transition-smooth);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 34px;
}

.footer-brand-summary {
  max-width: 580px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 38px;
  flex-wrap: wrap;
  list-style: none;
}

.footer-nav-link {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 6px;
  transition: var(--transition-smooth);
}

.footer-nav-link:hover {
  color: var(--caustic-cyan);
}

.footer-nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--btn-primary-gradient);
  transition: width 0.25s ease, left 0.25s ease;
}

.footer-nav-link:hover::after {
  width: 100%;
  left: 0;
}

.footer-copyright {
  font-size: 0.86rem;
  color: var(--text-muted);
  border-top: 1px solid var(--bg-glass-border);
  width: 100%;
  padding-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  align-items: center;
}

/* --------------------------------------------------
   15. 独立页面与推荐资讯专用样式 (Doc & Insights Pages)
   -------------------------------------------------- */
.doc-page {
  padding: 75px 0 110px 0;
}

.doc-card {
  background: var(--bg-glass-card);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 52px 46px;
  box-shadow: var(--card-shadow);
  max-width: 920px;
  margin: 0 auto;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

.doc-header {
  border-bottom: 1px solid var(--bg-glass-border);
  padding-bottom: 26px;
  margin-bottom: 36px;
}

.doc-header h1 {
  font-size: 2.3rem;
  font-weight: 800;
  margin-bottom: 12px;
  color: var(--text-pearl);
}

.doc-header .doc-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.doc-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 38px;
  margin-bottom: 16px;
  color: var(--text-pearl);
  display: flex;
  align-items: center;
  gap: 12px;
}

.doc-content h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--caustic-cyan);
  border-radius: var(--radius-pill);
  box-shadow: 0 0 10px var(--caustic-cyan);
}

.doc-content h3 {
  font-size: 1.18rem;
  font-weight: 600;
  margin-top: 24px;
  margin-bottom: 12px;
  color: var(--text-pearl);
}

.doc-content p, .doc-content li {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.82;
  margin-bottom: 15px;
}

.doc-content ul, .doc-content ol {
  padding-left: 24px;
  margin-bottom: 22px;
}

.doc-content .callout-box {
  background: var(--tag-bg);
  border-left: 4px solid var(--caustic-cyan);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  margin: 24px 0;
  box-shadow: inset 0 1px 1px rgba(255, 255, 255, 0.2);
}

.doc-content .callout-box p {
  margin: 0;
  color: var(--text-pearl);
  font-weight: 600;
}

/* 资讯专享卡片列表 */
.insights-feed {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  margin-top: 30px;
}

.insight-item-card {
  background: var(--bg-surface-translucent);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 30px 28px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
}

/* ==================================================
   15.1 SEO 深度长文专属结构样式 (Article SEO Architecture)
   ================================================== */
/* 面包屑导航 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 22px;
  flex-wrap: wrap;
}

.breadcrumb a {
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.breadcrumb a:hover {
  color: var(--caustic-cyan);
}

.breadcrumb-separator {
  color: var(--text-muted);
  opacity: 0.6;
}

/* 文章目录盒 (Table of Contents) */
.article-toc {
  background: var(--bg-surface-translucent);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 24px 26px;
  margin: 32px 0;
  box-shadow: var(--card-shadow);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.article-toc-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-pearl);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-toc-title svg {
  width: 18px;
  height: 18px;
  color: var(--caustic-cyan);
}

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

.article-toc-list li a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition-smooth);
}

.article-toc-list li a:hover {
  color: var(--caustic-cyan);
  transform: translateX(4px);
}

.article-toc-list li a::before {
  content: "→";
  color: var(--caustic-cyan);
  font-weight: bold;
}

/* 文章内嵌入式对比数据表格 */
.article-table-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--bg-glass-border);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.94rem;
  background: var(--bg-surface-translucent);
}

.article-table th, .article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--bg-glass-border);
}

.article-table th {
  background: var(--tag-bg);
  color: var(--text-pearl);
  font-weight: 700;
}

.article-table tr:hover td {
  background: rgba(56, 189, 248, 0.05);
}

/* 文章内 FAQ 问答区块 */
.article-faq-section {
  margin-top: 48px;
  border-top: 1px solid var(--bg-glass-border);
  padding-top: 36px;
}

.article-faq-section h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-pearl);
  margin-bottom: 22px;
}

.article-faq-item {
  background: var(--bg-surface-translucent);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin-bottom: 16px;
}

.article-faq-item h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-pearl);
  margin-top: 0;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-faq-item h3::before {
  content: "Q";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--btn-primary-gradient);
  color: #fff;
  border-radius: 50%;
  font-size: 0.78rem;
  font-weight: 800;
  flex-shrink: 0;
}

.article-faq-item p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 0;
  padding-left: 34px;
}

/* 文章底部转化行动号召横幅 */
.article-cta-box {
  background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(2, 132, 199, 0.25) 100%);
  border: 1px solid var(--caustic-cyan);
  border-radius: var(--radius-lg);
  padding: 38px 32px;
  text-align: center;
  margin: 48px 0;
  box-shadow: 0 10px 30px -5px var(--btn-glow);
}

.article-cta-box h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-pearl);
  margin-bottom: 12px;
}

.article-cta-box p {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 24px auto;
}

/* 相关阅读网格 (Related Reading Grid) */
.related-section {
  margin-top: 50px;
  border-top: 1px solid var(--bg-glass-border);
  padding-top: 36px;
}

.related-section h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-pearl);
  margin-bottom: 24px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

@media (max-width: 768px) {
  .related-articles-grid {
    grid-template-columns: 1fr;
  }
}

.related-card {
  background: var(--bg-surface-translucent);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  box-shadow: var(--card-shadow);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.related-card:hover {
  transform: translateY(-4px);
  border-color: var(--caustic-cyan);
  box-shadow: var(--card-shadow-hover);
}

.related-card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-pearl);
  margin-bottom: 8px;
  line-height: 1.45;
}

.related-card-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 14px;
}

.related-card-link {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--caustic-cyan);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.related-card-link:hover {
  text-decoration: underline;
}

.insight-item-card:hover {
  transform: translateY(-4px);
  border-color: var(--caustic-cyan);
  box-shadow: var(--card-shadow-hover);
}

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

.insight-category-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--caustic-cyan);
  background: var(--tag-bg);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--tag-border);
}

.insight-date {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.insight-item-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-pearl);
  margin-bottom: 12px;
}

.insight-item-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.68;
}

/* --------------------------------------------------
   16. 响应式媒体查询 (@media) - 确保手机端完美单栏适配
   -------------------------------------------------- */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .routes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stream-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ai-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
  .stat-item:nth-child(2)::after {
    display: none;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 65px 0;
  }

  .navbar {
    height: 66px;
  }

  .nav-menu {
    position: fixed;
    top: 66px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--bg-glass-border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    display: none;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-actions .btn {
    display: none;
  }

  .hero-section {
    padding: 60px 0 45px 0;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    min-height: 52px;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .routes-grid {
    grid-template-columns: 1fr;
  }

  .stream-grid {
    grid-template-columns: 1fr;
  }

  .ai-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .stats-strip {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 24px 18px;
  }

  .stat-item::after {
    display: none !important;
  }

  .footer-nav {
    flex-direction: column;
    gap: 18px;
  }

  .doc-card {
    padding: 30px 20px;
  }

  .doc-header h1 {
    font-size: 1.8rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 18px;
    padding-right: 18px;
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .pricing-card {
    padding: 32px 22px;
  }
}