/* ==========================================================================
   疾风云 (JiFengYun) - 奢境空灵极简原生样式表
   Design Language: Stratospheric Ethereal Negative-Space UI
   Zen luxury tech minimalist · Boundless feather-white & cirrus mist · Micro-buoyancy physics
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计系统色彩变量 (默认白天模式：平流层羽白与卷云轻雾)
   -------------------------------------------------------------------------- */
:root {
  /* 平流层羽白与轻雾背景体系 */
  --bg-zen: #f8fafc;
  --bg-zen-cirrus: #f1f5f9;
  --bg-zen-glow: radial-gradient(circle at 50% 0%, rgba(226, 232, 240, 0.7) 0%, rgba(248, 250, 252, 0) 75%);
  --bg-mist-layer: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 20%), rgba(219, 234, 254, 0.35), transparent 70%);

  /* 超薄折射毛玻璃层 (Glass Blades) */
  --glass-surface: rgba(255, 255, 255, 0.62);
  --glass-surface-hover: rgba(255, 255, 255, 0.88);
  --glass-border: rgba(255, 255, 255, 0.85);
  --glass-border-subtle: rgba(226, 232, 240, 0.8);
  --glass-border-hover: rgba(148, 163, 184, 0.4);
  --glass-nav: rgba(248, 250, 252, 0.75);

  /* 冷白金与钛系高级排版色 (Cold Platinum Typography) */
  --platinum-hero: #090d16;
  --platinum-title: #0f172a;
  --platinum-body: #475569;
  --platinum-muted: #64748b;
  --platinum-light: #94a3b8;
  --platinum-tint: #e2e8f0;

  /* 极致收敛的冷光点缀 (剔除艳俗杂色，回归纯粹奢华) */
  --accent-ice: #1e40af;
  --accent-ice-light: #3b82f6;
  --accent-ice-subtle: rgba(59, 130, 246, 0.06);
  --accent-glow: rgba(59, 130, 246, 0.12);

  /* 超柔和超延展环境遮蔽光晕 (Hyper-Soft Ambient Occlusions) */
  --occlusion-sm: 0 4px 24px -2px rgba(15, 23, 42, 0.03), 0 2px 6px -1px rgba(15, 23, 42, 0.02);
  --occlusion-card: 0 16px 40px -12px rgba(15, 23, 42, 0.05), 0 2px 8px -2px rgba(15, 23, 42, 0.02);
  --occlusion-hover: 0 28px 60px -14px rgba(15, 23, 42, 0.09), 0 8px 16px -4px rgba(15, 23, 42, 0.03);
  --occlusion-glow: 0 0 30px rgba(191, 219, 254, 0.4);

  /* 圆角与动力学物理参数 (Micro-buoyancy physics) */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;

  --ease-buoyancy: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-air: cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-buoyancy: transform 0.45s var(--ease-buoyancy), box-shadow 0.45s var(--ease-buoyancy), border-color 0.3s ease, background 0.3s ease;
}

/* --------------------------------------------------------------------------
   2. 深夜平流层模式 (Stratospheric Midnight)
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
  --bg-zen: #07090e;
  --bg-zen-cirrus: #0c1017;
  --bg-zen-glow: radial-gradient(circle at 50% 0%, rgba(30, 41, 59, 0.4) 0%, rgba(7, 9, 14, 0) 80%);
  --bg-mist-layer: radial-gradient(800px circle at var(--mouse-x, 50%) var(--mouse-y, 20%), rgba(30, 58, 138, 0.18), transparent 70%);

  --glass-surface: rgba(14, 19, 29, 0.65);
  --glass-surface-hover: rgba(20, 27, 42, 0.85);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-subtle: rgba(255, 255, 255, 0.05);
  --glass-border-hover: rgba(255, 255, 255, 0.22);
  --glass-nav: rgba(7, 9, 14, 0.78);

  --platinum-hero: #f8fafc;
  --platinum-title: #f1f5f9;
  --platinum-body: #94a3b8;
  --platinum-muted: #64748b;
  --platinum-light: #475569;
  --platinum-tint: #1e293b;

  --accent-ice: #60a5fa;
  --accent-ice-light: #93c5fd;
  --accent-ice-subtle: rgba(96, 165, 250, 0.08);
  --accent-glow: rgba(96, 165, 250, 0.18);

  --occlusion-sm: 0 4px 24px -2px rgba(0, 0, 0, 0.4);
  --occlusion-card: 0 16px 40px -12px rgba(0, 0, 0, 0.65), 0 0 1px 1px rgba(255, 255, 255, 0.04);
  --occlusion-hover: 0 28px 60px -14px rgba(0, 0, 0, 0.85), 0 0 35px rgba(59, 130, 246, 0.15);
  --occlusion-glow: 0 0 35px rgba(59, 130, 246, 0.25);
}

/* --------------------------------------------------------------------------
   3. 全局重置与平流层氛围画布
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-zen);
  color: var(--platinum-body);
  line-height: 1.7;
  letter-spacing: -0.01em;
  transition: background-color 0.5s ease, color 0.5s ease;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 气流折射与环境光雾背景层 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-zen-glow);
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--bg-mist-layer);
  pointer-events: none;
  z-index: 0;
  transition: background 0.2s linear;
}

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

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

ul, ol {
  list-style: none;
}

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

.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 32px;
  padding-right: 32px;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   4. 顶级透明折射导航栏 (Translucent Refraction Header)
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: var(--glass-nav);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid var(--glass-border-subtle);
  transition: background 0.4s ease, border-color 0.4s ease;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* 品牌标识 */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.02em;
  color: var(--platinum-hero);
}

.brand-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--platinum-hero);
  box-shadow: var(--occlusion-sm);
  transition: transform 0.4s var(--ease-buoyancy);
}

.brand-logo:hover .brand-icon {
  transform: translateY(-2px) scale(1.05);
}

.brand-name-text {
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--platinum-hero);
}

/* 导航链接集合 (包含首页加每个板块 + 推荐资讯) */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--platinum-body);
  position: relative;
  padding: 8px 6px;
  transition: color 0.25s ease;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 1.5px;
  background: var(--platinum-hero);
  transition: width 0.3s var(--ease-buoyancy), left 0.3s var(--ease-buoyancy);
  border-radius: 1px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 80%;
  left: 10%;
}

/* 推荐资讯特殊微光胶囊标签 */
.nav-link.highlight-pulse {
  color: var(--accent-ice);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.nav-link.highlight-pulse::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-ice-light);
  box-shadow: 0 0 8px var(--accent-ice);
  display: inline-block;
  animation: airPulse 2.5s infinite ease-in-out;
}

@keyframes airPulse {
  0%, 100% { opacity: 0.4; transform: scale(0.9); }
  50% { opacity: 1; transform: scale(1.2); }
}

/* 导航操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 精致专业化透明昼夜模式切换按钮 */
.theme-toggle-btn {
  position: relative;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  color: var(--platinum-body);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--occlusion-sm);
  transition: all 0.35s var(--ease-buoyancy);
  overflow: hidden;
}

.theme-toggle-btn:hover {
  color: var(--platinum-hero);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--occlusion-card);
}

.theme-toggle-btn svg {
  width: 18px;
  height: 18px;
  position: absolute;
  transition: transform 0.45s var(--ease-buoyancy), opacity 0.35s ease;
}

.theme-toggle-btn .icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.theme-toggle-btn .icon-moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.4);
}

[data-theme="dark"] .theme-toggle-btn .icon-sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.4);
}

[data-theme="dark"] .theme-toggle-btn .icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* 按钮规范 (禅意轻奢冷白金风格) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all 0.35s var(--ease-buoyancy);
  white-space: nowrap;
  font-size: 0.92rem;
  padding: 9px 22px;
  cursor: pointer;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--platinum-hero);
  color: var(--bg-zen);
  border: 1px solid transparent;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.12);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.2);
  opacity: 0.93;
}

[data-theme="dark"] .btn-primary {
  background: #ffffff;
  color: #07090e;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

[data-theme="dark"] .btn-primary:hover {
  box-shadow: 0 8px 30px rgba(255, 255, 255, 0.28);
}

.btn-secondary {
  background: var(--glass-surface);
  color: var(--platinum-hero);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(14px);
  box-shadow: var(--occlusion-sm);
}

.btn-secondary:hover {
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--occlusion-card);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.02rem;
  border-radius: var(--radius-full);
}

/* 移动端汉堡菜单 */
.mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  color: var(--platinum-hero);
  align-items: center;
  justify-content: center;
}

/* --------------------------------------------------------------------------
   5. 平流层空灵主视觉区 (Hero Section - Extreme Negative Space)
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: 130px 0 90px;
  text-align: center;
  overflow: hidden;
}

.hero-content {
  max-width: 920px;
  margin: 0 auto;
}

/* 超轻量空灵药丸标识 (无粗鄙卡通徽章) */
.hero-capsule {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 18px;
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-full);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--platinum-body);
  margin-bottom: 32px;
  backdrop-filter: blur(16px);
  box-shadow: var(--occlusion-sm);
  transition: transform 0.4s var(--ease-buoyancy);
}

.hero-capsule:hover {
  transform: translateY(-2px);
  border-color: var(--glass-border-hover);
}

.hero-capsule .pulse-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
}

/* 大标题包含当前品牌名 */
.hero-title {
  font-size: 3.8rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--platinum-hero);
  margin-bottom: 26px;
}

.hero-title .brand-highlight {
  font-weight: 900;
  letter-spacing: -0.02em;
  background: linear-gradient(180deg, var(--platinum-hero) 20%, var(--platinum-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* 主视觉简介 */
.hero-intro {
  font-size: 1.18rem;
  line-height: 1.8;
  color: var(--platinum-body);
  max-width: 760px;
  margin: 0 auto 46px;
  font-weight: 400;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 72px;
}

/* 超薄玻璃浮刃信息矩阵 (Ultra-Thin Glass Blades) */
.glass-blades-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.blade-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--occlusion-card);
  transition: var(--transition-buoyancy);
  text-align: center;
  position: relative;
}

/* 微浮力反馈 (Micro-buoyancy physics) */
.blade-card:hover {
  transform: translateY(-6px);
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--occlusion-hover);
}

.blade-value {
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--platinum-hero);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 6px;
}

.blade-label {
  font-size: 0.82rem;
  color: var(--platinum-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   6. 纯粹开阔区块 (Negative Space Sections)
   -------------------------------------------------------------------------- */
.section {
  padding: 120px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 68px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--platinum-muted);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.45rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--platinum-hero);
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--platinum-body);
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   7. 核心优势 (3个图文悬浮卡片 · 禅意极简)
   -------------------------------------------------------------------------- */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.advantage-blade {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 44px 36px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--occlusion-card);
  transition: var(--transition-buoyancy);
  display: flex;
  flex-direction: column;
}

.advantage-blade:hover {
  transform: translateY(-8px) scale(1.01);
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--occlusion-hover);
}

.advantage-blade-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: var(--accent-ice-subtle);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--platinum-hero);
  margin-bottom: 30px;
  transition: transform 0.4s var(--ease-buoyancy);
}

.advantage-blade:hover .advantage-blade-icon {
  transform: scale(1.08) translateY(-2px);
}

.advantage-blade-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--platinum-hero);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.advantage-blade-desc {
  font-size: 0.96rem;
  color: var(--platinum-body);
  line-height: 1.8;
  margin-bottom: 24px;
  flex-grow: 1;
}

.advantage-blade-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.blade-chip {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--platinum-muted);
  background: var(--bg-zen-cirrus);
  border: 1px solid var(--glass-border-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* --------------------------------------------------------------------------
   8. 流媒体 & AI 图卡专区 (拒绝卡通，冷钛雅致)
   -------------------------------------------------------------------------- */
.services-zen-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.zen-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--occlusion-sm);
  transition: var(--transition-buoyancy);
  display: flex;
  flex-direction: column;
}

.zen-card:hover {
  transform: translateY(-6px);
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--occlusion-card);
}

.zen-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.zen-card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--bg-zen-cirrus);
  border: 1px solid var(--glass-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--platinum-hero);
  flex-shrink: 0;
}

.zen-card-meta h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--platinum-hero);
  line-height: 1.25;
}

.zen-card-meta span {
  font-size: 0.76rem;
  color: var(--platinum-muted);
  letter-spacing: 0.02em;
}

.zen-card-desc {
  font-size: 0.9rem;
  color: var(--platinum-body);
  line-height: 1.65;
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   9. 真实套餐价格对比表 (参考网上真实机场/加速器标准)
   -------------------------------------------------------------------------- */
.pricing-zen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: stretch;
}

.pricing-blade {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 44px 36px;
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  box-shadow: var(--occlusion-card);
  transition: var(--transition-buoyancy);
  display: flex;
  flex-direction: column;
  position: relative;
}

.pricing-blade:hover {
  transform: translateY(-8px);
  box-shadow: var(--occlusion-hover);
  border-color: var(--glass-border-hover);
}

/* 推荐热门款 (轻盈微芒，高质感边框) */
.pricing-blade.featured {
  border-color: var(--platinum-hero);
  background: var(--glass-surface-hover);
  box-shadow: var(--occlusion-hover), var(--occlusion-glow);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-blade.featured:hover {
  transform: scale(1.02) translateY(-8px);
}

.blade-hot-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--platinum-hero);
  color: var(--bg-zen);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

[data-theme="dark"] .blade-hot-badge {
  background: #ffffff;
  color: #07090e;
}

.pricing-blade-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--platinum-hero);
  margin-bottom: 6px;
}

.pricing-blade-tagline {
  font-size: 0.88rem;
  color: var(--platinum-muted);
  margin-bottom: 24px;
}

.pricing-blade-figure {
  margin-bottom: 30px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.currency-symbol {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--platinum-hero);
}

.amount-main {
  font-size: 3.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--platinum-hero);
  line-height: 1;
}

.billing-cycle {
  font-size: 0.9rem;
  color: var(--platinum-muted);
  margin-left: 4px;
}

.pricing-features-list {
  margin-bottom: 36px;
  flex-grow: 1;
}

.pricing-feature-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 0;
  font-size: 0.92rem;
  color: var(--platinum-body);
  border-bottom: 1px solid var(--glass-border-subtle);
}

.pricing-feature-row:last-child {
  border-bottom: none;
}

.pricing-feature-row svg {
  width: 17px;
  height: 17px;
  color: var(--platinum-hero);
  flex-shrink: 0;
}

.pricing-blade-cta {
  width: 100%;
}

/* --------------------------------------------------------------------------
   10. 用户评价 (深沉真实 · 极简质感)
   -------------------------------------------------------------------------- */
.testimonials-zen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-zen-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--occlusion-sm);
  transition: var(--transition-buoyancy);
  display: flex;
  flex-direction: column;
}

.testimonial-zen-card:hover {
  transform: translateY(-6px);
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--occlusion-card);
}

.quote-mark {
  font-size: 2.2rem;
  line-height: 1;
  color: var(--platinum-light);
  font-family: Georgia, serif;
  margin-bottom: 12px;
}

.testimonial-quote {
  font-size: 0.96rem;
  color: var(--platinum-body);
  line-height: 1.75;
  margin-bottom: 24px;
  flex-grow: 1;
}

.testimonial-client {
  display: flex;
  align-items: center;
  gap: 14px;
}

.client-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-full);
  background: var(--bg-zen-cirrus);
  border: 1px solid var(--glass-border);
  color: var(--platinum-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.95rem;
}

.client-meta h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--platinum-hero);
}

.client-meta p {
  font-size: 0.8rem;
  color: var(--platinum-muted);
}

/* --------------------------------------------------------------------------
   11. 常见问题 (FAQ 极简手风琴)
   -------------------------------------------------------------------------- */
.faq-zen-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.faq-zen-item {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transition: border-color 0.3s ease, background 0.3s ease;
  overflow: hidden;
}

.faq-zen-item:hover {
  border-color: var(--glass-border-hover);
}

.faq-zen-question {
  width: 100%;
  padding: 22px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--platinum-hero);
  background: transparent;
  cursor: pointer;
}

.faq-zen-icon {
  width: 20px;
  height: 20px;
  color: var(--platinum-muted);
  transition: transform 0.4s var(--ease-buoyancy), color 0.3s ease;
  flex-shrink: 0;
}

.faq-zen-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease-buoyancy), padding 0.35s ease;
  padding: 0 28px;
  color: var(--platinum-body);
  font-size: 0.95rem;
  line-height: 1.8;
}

.faq-zen-item.active {
  border-color: var(--platinum-hero);
}

.faq-zen-item.active .faq-zen-icon {
  transform: rotate(180deg);
  color: var(--platinum-hero);
}

.faq-zen-item.active .faq-zen-answer {
  max-height: 320px;
  padding-bottom: 24px;
}

/* --------------------------------------------------------------------------
   12. 底部呼吁转化卡片 (Ethereal Flight Banner)
   -------------------------------------------------------------------------- */
.flight-cta-banner {
  margin: 40px auto 90px;
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 68px 36px;
  text-align: center;
  backdrop-filter: blur(32px);
  -webkit-backdrop-filter: blur(32px);
  box-shadow: var(--occlusion-card);
  position: relative;
  overflow: hidden;
}

.flight-cta-content {
  max-width: 680px;
  margin: 0 auto;
}

.flight-cta-banner h2 {
  font-size: 2.35rem;
  font-weight: 800;
  color: var(--platinum-hero);
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.flight-cta-banner p {
  font-size: 1.05rem;
  color: var(--platinum-body);
  line-height: 1.75;
  margin-bottom: 36px;
}

/* --------------------------------------------------------------------------
   13. 页脚规范 (Footer) - 严格只保留4个标题，内容打开新页面
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--glass-nav);
  border-top: 1px solid var(--glass-border-subtle);
  padding: 56px 0 40px;
  text-align: center;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
  margin-bottom: 26px;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--platinum-body);
  transition: color 0.25s ease;
  padding: 6px 12px;
}

.footer-nav-link:hover {
  color: var(--platinum-hero);
}

.footer-brand-info {
  font-size: 0.85rem;
  color: var(--platinum-muted);
  line-height: 1.7;
}

.footer-copyright {
  margin-top: 8px;
}

/* --------------------------------------------------------------------------
   14. 子页面与推荐资讯专用样式 (Subpages & Insights)
   -------------------------------------------------------------------------- */
.subpage-hero {
  padding: 90px 0 50px;
  text-align: center;
}

.subpage-hero h1 {
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--platinum-hero);
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.subpage-hero p {
  font-size: 1.05rem;
  color: var(--platinum-body);
  max-width: 640px;
  margin: 0 auto;
}

.subpage-content {
  padding: 40px 0 100px;
  max-width: 880px;
  margin: 0 auto;
}

.zen-article-block {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  margin-bottom: 30px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--occlusion-sm);
  transition: var(--transition-buoyancy);
}

.zen-article-block:hover {
  border-color: var(--glass-border-hover);
  box-shadow: var(--occlusion-card);
}

.zen-article-block h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--platinum-hero);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.zen-article-block h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--platinum-hero);
  border-radius: 2px;
}

.zen-article-block p {
  font-size: 0.98rem;
  color: var(--platinum-body);
  line-height: 1.85;
  margin-bottom: 16px;
}

.zen-article-block p:last-child {
  margin-bottom: 0;
}

.zen-article-block ul {
  padding-left: 20px;
  margin-bottom: 18px;
}

.zen-article-block li {
  list-style: disc;
  font-size: 0.95rem;
  color: var(--platinum-body);
  line-height: 1.8;
  margin-bottom: 8px;
}

/* 推荐资讯卡片列表 (Insights Feed) */
.insights-feed-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.insight-item-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 34px 32px;
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  box-shadow: var(--occlusion-sm);
  transition: var(--transition-buoyancy);
}

.insight-item-card:hover {
  transform: translateY(-6px);
  background: var(--glass-surface-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--occlusion-card);
}

.insight-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--platinum-muted);
  margin-bottom: 12px;
}

.insight-tag {
  background: var(--bg-zen-cirrus);
  border: 1px solid var(--glass-border-subtle);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-weight: 600;
  color: var(--platinum-hero);
}

.insight-item-card h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--platinum-hero);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.insight-item-card p {
  font-size: 0.95rem;
  color: var(--platinum-body);
  line-height: 1.75;
}

/* --------------------------------------------------------------------------
   15. 响应式媒体查询 (@media) - 手机端极简单栏与触控保障
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 3rem;
  }
  .advantages-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .services-zen-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-zen-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
  .pricing-blade.featured {
    transform: none;
  }
  .pricing-blade.featured:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: var(--glass-nav);
    backdrop-filter: blur(28px) saturate(180%);
    -webkit-backdrop-filter: blur(28px) saturate(180%);
    border-bottom: 1px solid var(--glass-border-subtle);
    flex-direction: column;
    gap: 0;
    padding: 16px 24px;
    box-shadow: var(--occlusion-hover);
    display: none;
  }

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

  .nav-link {
    width: 100%;
    padding: 14px 0;
    border-bottom: 1px solid var(--glass-border-subtle);
  }

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

  .hero-section {
    padding: 70px 0 50px;
  }

  .hero-title {
    font-size: 2.3rem;
  }

  .hero-intro {
    font-size: 1.02rem;
    margin-bottom: 32px;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }

  .hero-cta-group .btn {
    width: 100%;
    min-height: 48px;
  }

  .glass-blades-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .advantage-blade {
    padding: 30px 24px;
  }

  .services-zen-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .pricing-zen-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .pricing-blade {
    padding: 34px 24px;
  }

  .testimonials-zen-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 14px;
  }

  .subpage-content {
    padding: 20px 0 60px;
  }

  .zen-article-block {
    padding: 28px 20px;
  }
}

/* --------------------------------------------------------------------------
   16. SEO 深度科普长文专用排版规范 (Long-form Technical Article Styling)
   -------------------------------------------------------------------------- */
.article-wrapper {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 100px;
}

/* 面包屑导航 */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--platinum-muted);
  margin-bottom: 28px;
}

.breadcrumb-nav a {
  color: var(--platinum-body);
}

.breadcrumb-nav a:hover {
  color: var(--platinum-hero);
}

.breadcrumb-separator {
  opacity: 0.5;
}

/* 文章头部 */
.article-post-header {
  margin-bottom: 40px;
  text-align: left;
}

.article-category-badge {
  display: inline-block;
  padding: 4px 14px;
  background: var(--bg-zen-cirrus);
  border: 1px solid var(--glass-border-subtle);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--platinum-hero);
  margin-bottom: 16px;
}

.article-main-title {
  font-size: 2.6rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--platinum-hero);
  line-height: 1.25;
  margin-bottom: 18px;
}

.article-post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 18px;
  font-size: 0.86rem;
  color: var(--platinum-muted);
  border-bottom: 1px solid var(--glass-border-subtle);
  padding-bottom: 20px;
}

.article-post-meta span {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* 目录区块 (Table of Contents) */
.toc-container {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 28px 32px;
  margin-bottom: 48px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--occlusion-sm);
}

.toc-header {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--platinum-hero);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toc-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toc-item {
  position: relative;
  padding-left: 18px;
}

.toc-item::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--platinum-muted);
}

.toc-link {
  font-size: 0.95rem;
  color: var(--platinum-body);
  transition: color 0.2s ease;
}

.toc-link:hover {
  color: var(--platinum-hero);
  text-decoration: underline;
}

/* 正文深度排版 */
.article-rich-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--platinum-body);
}

.article-rich-content h2 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--platinum-hero);
  margin-top: 54px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--glass-border-subtle);
  position: relative;
}

.article-rich-content h2::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 50px;
  height: 2px;
  background: var(--platinum-hero);
}

.article-rich-content h3 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--platinum-hero);
  margin-top: 36px;
  margin-bottom: 14px;
}

.article-rich-content p {
  margin-bottom: 22px;
}

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

.article-rich-content li {
  margin-bottom: 10px;
  line-height: 1.8;
}

.article-rich-content ul li {
  list-style: disc;
}

.article-rich-content ol li {
  list-style: decimal;
}

.article-rich-content strong {
  color: var(--platinum-hero);
  font-weight: 700;
}

.article-rich-content a {
  color: var(--accent-ice);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}

.article-rich-content a:hover {
  color: var(--platinum-hero);
}

/* 高亮呼出卡片 (Callout Box) */
.article-callout {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--platinum-hero);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 32px 0;
  backdrop-filter: blur(16px);
  box-shadow: var(--occlusion-sm);
}

.article-callout p {
  margin-bottom: 0;
  font-size: 0.98rem;
}

.article-callout-title {
  font-weight: 700;
  color: var(--platinum-hero);
  margin-bottom: 8px;
  display: block;
}

/* 禅意对比表格 (Data Comparison Table) */
.table-responsive {
  width: 100%;
  overflow-x: auto;
  margin: 32px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  background: var(--glass-surface);
  backdrop-filter: blur(18px);
  box-shadow: var(--occlusion-sm);
}

.zen-data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
}

.zen-data-table th {
  background: var(--bg-zen-cirrus);
  color: var(--platinum-hero);
  font-weight: 700;
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border-subtle);
  white-space: nowrap;
}

.zen-data-table td {
  padding: 16px 20px;
  color: var(--platinum-body);
  border-bottom: 1px solid var(--glass-border-subtle);
  vertical-align: middle;
}

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

.zen-data-table tr:hover td {
  background: var(--glass-surface-hover);
}

/* 极简代码预览区 (Code Snippet) */
.zen-code-box {
  background: #090d16;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 26px 0;
  overflow-x: auto;
  color: #e2e8f0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.88rem;
  line-height: 1.6;
}

/* 文章内置 FAQ 手风琴区块 */
.article-faq-section {
  margin-top: 60px;
  padding-top: 40px;
  border-top: 1px solid var(--glass-border-subtle);
}

.article-faq-section h2 {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--platinum-hero);
  margin-bottom: 24px;
}

/* 相关阅读卡片网格 (Related Reading) */
.related-posts-section {
  margin-top: 70px;
  padding-top: 40px;
  border-top: 1px solid var(--glass-border-subtle);
}

.related-posts-section h2 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--platinum-hero);
  margin-bottom: 24px;
}

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

.related-post-card {
  background: var(--glass-surface);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 24px 22px;
  backdrop-filter: blur(18px);
  box-shadow: var(--occlusion-sm);
  transition: var(--transition-buoyancy);
  display: flex;
  flex-direction: column;
}

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

.related-post-tag {
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--platinum-muted);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.related-post-card h3 {
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--platinum-hero);
  line-height: 1.4;
  margin-bottom: 10px;
}

.related-post-card p {
  font-size: 0.86rem;
  color: var(--platinum-body);
  line-height: 1.6;
  margin-bottom: 14px;
  flex-grow: 1;
}

.related-post-link {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--platinum-hero);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

@media (max-width: 768px) {
  .article-main-title {
    font-size: 1.95rem;
  }
  .article-rich-content h2 {
    font-size: 1.5rem;
  }
  .article-rich-content h3 {
    font-size: 1.2rem;
  }
  .toc-container {
    padding: 20px;
  }
  .related-posts-grid {
    grid-template-columns: 1fr;
  }
}