/* ==========================================================================
   Nexitally 奶昔机场 - Silky Fluid-Luxury UI 核心样式表
   品牌官网: https://nexitally.site
   设计理念:
   - Haute-couture palette: Milkshake Ivory White (#fbfbf9), Satin Cream-Glass,
     Rich Obsidian Charcoal, Subtle Cold Champagne-Gold (#d4af37).
   - Proprietary custom-panel architecture: Bespoke Bento layout, fluid curves.
   - Viscous hydrodynamic micro-interactions & Liquid Silk Sheen.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 高级时装级色彩系统与流体变量 (Haute-Couture Palette & CSS Variables)
   -------------------------------------------------------------------------- */
:root {
  /* 默认白天模式 (Milkshake Ivory White & Satin Cream-Glass) */
  --bg-page: #fbfbf9;
  --bg-page-secondary: #f4f3ee;
  
  /* 缎面奶油毛玻璃面板 (Satin Cream-Glass) */
  --bg-card: rgba(255, 255, 253, 0.76);
  --bg-card-solid: #ffffff;
  --bg-card-hover: rgba(255, 255, 255, 0.94);
  --bg-surface-elevated: #ffffff;
  
  --nav-bg: rgba(251, 251, 249, 0.82);
  --nav-border: rgba(212, 175, 55, 0.16);

  /* 黑曜石炭黑排版文字 (Rich Obsidian Charcoal) */
  --text-primary: #121316;
  --text-secondary: #3e4149;
  --text-muted: #6e727c;
  --text-inverse: #fbfbf9;

  /* 冷香槟金主调与微渐变 (Subtle Cold Champagne-Gold) */
  --gold-primary: #d4af37;
  --gold-secondary: #c5a028;
  --gold-light: #f6eedb;
  --gold-subtle: rgba(212, 175, 55, 0.12);
  --gold-glow: rgba(212, 175, 55, 0.28);
  --gold-gradient: linear-gradient(135deg, #d4af37 0%, #aa841c 100%);
  --gold-text-gradient: linear-gradient(135deg, #121316 0%, #5a4714 60%, #b89326 100%);

  /* 边框与极微投影 (Viscous Soft Shadows) */
  --border-light: rgba(18, 19, 22, 0.07);
  --border-gold: rgba(212, 175, 55, 0.24);
  --border-card: rgba(212, 175, 55, 0.15);

  --shadow-viscous-sm: 0 4px 12px -2px rgba(18, 19, 22, 0.04), 0 2px 6px -1px rgba(212, 175, 55, 0.04);
  --shadow-viscous-md: 0 12px 32px -4px rgba(18, 19, 22, 0.06), 0 4px 12px -2px rgba(212, 175, 55, 0.06);
  --shadow-viscous-lg: 0 24px 56px -8px rgba(18, 19, 22, 0.08), 0 8px 24px -4px rgba(212, 175, 55, 0.08);
  --shadow-gold-sheen: 0 0 35px rgba(212, 175, 55, 0.22);

  /* 高折射流体圆角 (High-Refraction Fluid Curves) */
  --radius-xs: 8px;
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
  --radius-xl: 34px;
  --radius-pill: 9999px;

  /* 超阻尼电影级流体缓动 (Ultra-Damped Cinematic Fluid Easing) */
  --ease-fluid: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-elastic: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fluid: all 0.42s var(--ease-fluid);
  --transition-fast: all 0.2s ease;
}

/* 暗黑模式 (Obsidian Velvet & Smoked Champagne-Gold) */
[data-theme="dark"] {
  --bg-page: #0a0b0e;
  --bg-page-secondary: #0f1015;

  --bg-card: rgba(18, 19, 24, 0.74);
  --bg-card-solid: #13141a;
  --bg-card-hover: rgba(25, 27, 34, 0.88);
  --bg-surface-elevated: #181920;

  --nav-bg: rgba(10, 11, 14, 0.85);
  --nav-border: rgba(212, 175, 55, 0.2);

  --text-primary: #fbfbf9;
  --text-secondary: #b5b8c0;
  --text-muted: #727682;
  --text-inverse: #0a0b0e;

  --gold-primary: #e5c158;
  --gold-secondary: #d4af37;
  --gold-light: rgba(229, 193, 88, 0.12);
  --gold-subtle: rgba(229, 193, 88, 0.1);
  --gold-glow: rgba(229, 193, 88, 0.32);
  --gold-gradient: linear-gradient(135deg, #e5c158 0%, #aa841c 100%);
  --gold-text-gradient: linear-gradient(135deg, #ffffff 0%, #ecd48e 60%, #e5c158 100%);

  --border-light: rgba(255, 255, 255, 0.08);
  --border-gold: rgba(229, 193, 88, 0.26);
  --border-card: rgba(229, 193, 88, 0.16);

  --shadow-viscous-sm: 0 4px 16px -2px rgba(0, 0, 0, 0.5);
  --shadow-viscous-md: 0 16px 40px -4px rgba(0, 0, 0, 0.7);
  --shadow-viscous-lg: 0 28px 64px -8px rgba(0, 0, 0, 0.85);
  --shadow-gold-sheen: 0 0 40px rgba(229, 193, 88, 0.25);
}

/* --------------------------------------------------------------------------
   2. 全局重置与极简排版基础
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 86px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-page);
  color: var(--text-primary);
  line-height: 1.68;
  transition: background-color 0.4s var(--ease-fluid), color 0.4s var(--ease-fluid);
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

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

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
  position: relative;
  z-index: 2;
}

/* 流体环境柔和金光晕 */
.ambient-glow-fluid {
  position: fixed;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 680px;
  background: radial-gradient(circle at 50% -15%, rgba(212, 175, 55, 0.1) 0%, rgba(246, 238, 219, 0.06) 45%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .ambient-glow-fluid {
  background: radial-gradient(circle at 50% -15%, rgba(229, 193, 88, 0.14) 0%, rgba(18, 19, 24, 0.05) 50%, transparent 70%);
}

/* --------------------------------------------------------------------------
   3. 页眉与完整导航目录 (Header & Comprehensive Navbar)
   -------------------------------------------------------------------------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  transition: background-color 0.35s var(--ease-fluid), border-color 0.35s var(--ease-fluid);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text-primary);
  flex-shrink: 0;
}

.brand-logo-img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  object-fit: cover;
  display: block;
  flex-shrink: 0;
  box-shadow: 0 4px 14px rgba(66, 133, 244, 0.25);
  transition: transform 0.3s var(--ease-fluid), box-shadow 0.3s ease;
}

[data-theme="dark"] .brand-logo-img {
  box-shadow: 0 4px 16px rgba(66, 133, 244, 0.35), 0 0 12px rgba(228, 19, 173, 0.25);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.05);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--gold-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 4px 16px var(--gold-glow);
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.35), transparent);
  transform: rotate(45deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.12rem;
  font-weight: 800;
  line-height: 1.15;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 0.72rem;
  color: var(--gold-secondary);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* 完整的板块导航目录 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 8px 12px;
  border-radius: var(--radius-pill);
  transition: var(--transition-fluid);
  position: relative;
}

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

/* 新增的‘推荐资讯’高亮药丸徽章 */
.nav-link-radar {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--gold-secondary);
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
}

.nav-link-radar:hover {
  background: var(--gold-primary);
  color: #ffffff;
  border-color: var(--gold-primary);
  box-shadow: 0 4px 14px var(--gold-glow);
}

.radar-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold-primary);
  box-shadow: 0 0 8px var(--gold-primary);
}

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

/* 精致专业透明昼夜模式切换按钮 */
.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  color: var(--text-secondary);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-viscous-sm);
  transition: var(--transition-fluid);
  position: relative;
  overflow: hidden;
}

.theme-toggle-btn:hover {
  background: var(--bg-card-hover);
  color: var(--gold-secondary);
  border-color: var(--gold-primary);
  box-shadow: 0 4px 16px var(--gold-glow);
  transform: translateY(-2px);
}

.theme-icon-sun,
.theme-icon-moon {
  position: absolute;
  width: 20px;
  height: 20px;
  transition: transform 0.45s var(--ease-fluid), opacity 0.45s var(--ease-fluid);
}

[data-theme="light"] .theme-icon-sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}
[data-theme="light"] .theme-icon-moon {
  opacity: 0;
  transform: rotate(90deg) scale(0.3);
}

[data-theme="dark"] .theme-icon-sun {
  opacity: 0;
  transform: rotate(-90deg) scale(0.3);
}
[data-theme="dark"] .theme-icon-moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

.mobile-menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  background: var(--bg-card);
}

/* --------------------------------------------------------------------------
   4. 按钮组件规范 (Haute-Couture CTA Buttons)
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  transition: var(--transition-fluid);
  text-align: center;
  white-space: nowrap;
  line-height: 1.2;
}

.btn-primary {
  background: var(--gold-gradient);
  color: #ffffff;
  box-shadow: 0 4px 18px var(--gold-glow);
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

/* 丝绸流光交互特效 (Liquid Silk Sheen Effect) */
.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -120%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.45), transparent);
  transition: left 0.75s var(--ease-fluid);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--gold-glow), 0 0 20px rgba(212, 175, 55, 0.4);
  color: #ffffff;
}

.btn-primary:hover::before {
  left: 120%;
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border-card);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-viscous-sm);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--gold-primary);
  color: var(--gold-secondary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-viscous-md);
}

.btn-lg {
  padding: 15px 32px;
  font-size: 1.05rem;
  border-radius: var(--radius-pill);
  min-height: 54px;
}

.btn-block {
  width: 100%;
}

/* --------------------------------------------------------------------------
   5. 3D 非牛顿流体互动视觉与主视觉区 (Interactive Fluid Hero Section)
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  padding: 85px 0 95px;
  text-align: center;
  overflow: hidden;
}

/* 交互式 3D 非牛顿流体表面画布 (Non-Newtonian Fluid Interactive Surface) */
#fluid-hero-canvas {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  max-width: 1400px;
  height: 100%;
  pointer-events: none;
  z-index: 1;
  opacity: 0.85;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 960px;
  margin: 0 auto;
}

.hero-brand-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-radius: var(--radius-pill);
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  color: var(--text-primary);
  font-size: 0.86rem;
  font-weight: 700;
  box-shadow: var(--shadow-viscous-sm);
  margin-bottom: 24px;
  backdrop-filter: blur(12px);
}

.hero-brand-pill .sparkle-gold {
  color: var(--gold-primary);
}

/* 大标题包含当前品牌名 Nexitally 奶昔机场 */
.hero-headline {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.14;
  margin-bottom: 22px;
  color: var(--text-primary);
}

.hero-headline .brand-highlight {
  background: var(--gold-text-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* 主视觉区详细简介 */
.hero-intro-text {
  font-size: 1.22rem;
  color: var(--text-secondary);
  max-width: 760px;
  margin: 0 auto 38px;
  line-height: 1.78;
  font-weight: 450;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  margin-bottom: 52px;
  flex-wrap: wrap;
}

/* 4项流体奢华专线核心指标 */
.hero-bento-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 34px 24px;
  box-shadow: var(--shadow-viscous-md);
  position: relative;
  overflow: hidden;
}

.metric-bento-item {
  text-align: center;
  position: relative;
}

.metric-bento-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 20%;
  height: 60%;
  width: 1px;
  background-color: var(--border-light);
}

.metric-num {
  font-size: 2.3rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text-primary);
  margin-bottom: 6px;
}

.metric-num span {
  color: var(--gold-primary);
  font-size: 1.4rem;
}

.metric-sub {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   6. 专有便当盒架构与产品核心优势 (Bento Grid Architecture & 3 Cards)
   -------------------------------------------------------------------------- */
.section-features {
  padding: 85px 0;
  position: relative;
  z-index: 2;
}

.section-header {
  text-align: center;
  max-width: 750px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-secondary);
  background: var(--gold-subtle);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
  border: 1px solid var(--border-gold);
}

.section-title {
  font-size: 2.35rem;
  font-weight: 850;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.72;
}

/* 3个核心优势卡片：带有 2000Mbps 液体丝绸流光特效 (Liquid Silk Sheen) */
.features-bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-bento-card {
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  box-shadow: var(--shadow-viscous-sm);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  transition: var(--transition-fluid);
}

/* 悬停卡片轮廓流动的丝绸光泽 (Liquid Silk Sheen Cascades) */
.feature-bento-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle at center, rgba(212, 175, 55, 0.18) 0%, transparent 55%);
  opacity: 0;
  transition: opacity 0.5s var(--ease-fluid), transform 0.5s var(--ease-fluid);
  pointer-events: none;
}

.feature-bento-card:hover {
  transform: translateY(-8px);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-viscous-lg), var(--shadow-gold-sheen);
}

.feature-bento-card:hover::before {
  opacity: 1;
  transform: scale(1.1);
}

.bento-icon-wrapper {
  width: 62px;
  height: 62px;
  border-radius: var(--radius-lg);
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-secondary);
  margin-bottom: 26px;
  box-shadow: var(--shadow-viscous-sm);
}

.feature-bento-title {
  font-size: 1.38rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  line-height: 1.32;
}

.feature-bento-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.74;
  margin-bottom: 22px;
  flex-grow: 1;
}

.feature-bento-pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: auto;
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
}

.feature-bento-pill {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--gold-subtle);
  color: var(--gold-secondary);
}

/* --------------------------------------------------------------------------
   7. 流媒体图卡 & AI 支持图卡 (Streaming & AI Proprietary Bento Panels)
   -------------------------------------------------------------------------- */
.section-unlock {
  padding: 85px 0;
  background: var(--bg-page-secondary);
  position: relative;
  z-index: 2;
  transition: background-color 0.4s var(--ease-fluid);
}

.unlock-bento-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.unlock-bento-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 42px 36px;
  box-shadow: var(--shadow-viscous-md);
  display: flex;
  flex-direction: column;
  transition: var(--transition-fluid);
  position: relative;
}

.unlock-bento-card:hover {
  transform: translateY(-6px);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-viscous-lg);
}

.unlock-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.unlock-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  background: var(--gold-subtle);
  color: var(--gold-secondary);
  border: 1px solid var(--border-gold);
}

.unlock-title {
  font-size: 1.65rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.unlock-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.74;
  margin-bottom: 28px;
}

/* 原生定制网格标牌 (Custom Bento Chips) */
.bento-chips-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 28px;
}

.bento-chip-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 16px;
  background: var(--bg-card-solid);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-viscous-sm);
  transition: var(--transition-fast);
}

.bento-chip-item:hover {
  border-color: var(--gold-primary);
  transform: translateX(3px);
}

.bento-chip-glyph {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  color: var(--gold-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 0.82rem;
  flex-shrink: 0;
}

.bento-chip-detail {
  display: flex;
  flex-direction: column;
}

.bento-chip-name {
  font-size: 0.92rem;
  font-weight: 750;
  color: var(--text-primary);
}

.bento-chip-state {
  font-size: 0.76rem;
  color: var(--gold-secondary);
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.unlock-footer-notice {
  margin-top: auto;
  padding: 18px 20px;
  border-radius: var(--radius-md);
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --------------------------------------------------------------------------
   8. 网上真实套餐价格对比表 (Real Nexitally Pricing Architecture)
   -------------------------------------------------------------------------- */
.section-pricing {
  padding: 85px 0;
  position: relative;
  z-index: 2;
}

.pricing-bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 42px 34px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--shadow-viscous-sm);
  transition: var(--transition-fluid);
}

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

/* 主力推荐版 (Smart Access 旗舰款) 奢华香槟金高亮 */
.pricing-card.flagship-featured {
  border: 2px solid var(--gold-primary);
  box-shadow: 0 16px 45px -8px var(--gold-glow);
  transform: scale(1.025);
  background: var(--bg-card-solid);
}

.pricing-card.flagship-featured:hover {
  transform: scale(1.025) translateY(-8px);
}

.flagship-banner-pill {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gold-gradient);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 5px 20px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.06em;
  box-shadow: 0 4px 16px var(--gold-glow);
  white-space: nowrap;
}

.pricing-tier-tag {
  font-size: 0.8rem;
  font-weight: 750;
  letter-spacing: 0.08em;
  color: var(--gold-secondary);
  text-transform: uppercase;
  margin-bottom: 6px;
}

.pricing-tier-name {
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.pricing-tier-summary {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  min-height: 44px;
  line-height: 1.6;
}

.pricing-amount-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 28px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-light);
}

.pricing-currency {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--gold-secondary);
}

.pricing-number {
  font-size: 3.4rem;
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--text-primary);
}

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

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

.pricing-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.94rem;
  color: var(--text-secondary);
  margin-bottom: 15px;
  line-height: 1.5;
}

.pricing-features-list li svg {
  color: var(--gold-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

/* --------------------------------------------------------------------------
   9. 用户评价 (Testimonials - Haute-Couture Quotes)
   -------------------------------------------------------------------------- */
.section-reviews {
  padding: 85px 0;
  background: var(--bg-page-secondary);
  position: relative;
  z-index: 2;
  transition: background-color 0.4s var(--ease-fluid);
}

.reviews-bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  box-shadow: var(--shadow-viscous-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition-fluid);
}

.review-card:hover {
  transform: translateY(-5px);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-viscous-md);
}

.review-stars {
  color: var(--gold-primary);
  font-size: 0.95rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.review-quote {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: 24px;
  flex-grow: 1;
}

.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

.reviewer-initial {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  color: var(--gold-secondary);
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}

.reviewer-name {
  font-size: 0.96rem;
  font-weight: 750;
  color: var(--text-primary);
}

.reviewer-tag {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   10. 常见问题解答 (FAQ Accordion with Fluid Micro-Interactions)
   -------------------------------------------------------------------------- */
.section-faq {
  padding: 85px 0;
  position: relative;
  z-index: 2;
}

.faq-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  margin-bottom: 16px;
  overflow: hidden;
  transition: var(--transition-fluid);
  box-shadow: var(--shadow-viscous-sm);
}

.faq-item:hover {
  border-color: var(--gold-primary);
}

.faq-item.active {
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-viscous-md), 0 0 20px var(--gold-subtle);
}

.faq-trigger {
  width: 100%;
  padding: 24px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  font-size: 1.1rem;
  font-weight: 750;
  color: var(--text-primary);
  background: none;
  border: none;
  gap: 16px;
}

.faq-icon-arrow {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  color: var(--gold-secondary);
  transition: transform 0.4s var(--ease-fluid);
}

.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s var(--ease-fluid), padding 0.45s var(--ease-fluid);
  padding: 0 28px;
}

.faq-item.active .faq-content {
  max-height: 380px;
  padding: 0 28px 24px;
}

.faq-content p {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.78;
}

/* --------------------------------------------------------------------------
   11. 页脚 (Footer) - 严格只保留四个标题，在新页面打开
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--bg-page-secondary);
  border-top: 1px solid var(--border-card);
  padding: 44px 0;
  transition: background-color 0.4s var(--ease-fluid);
  position: relative;
  z-index: 2;
}

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

.footer-link {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--text-primary);
  transition: var(--transition-fast);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
}

.footer-link:hover {
  color: var(--gold-secondary);
  background: var(--gold-subtle);
}

/* --------------------------------------------------------------------------
   12. 独立子页面通用排版与推荐资讯页 (Subpages & Insights)
   -------------------------------------------------------------------------- */
.subpage-container {
  max-width: 900px;
  margin: 48px auto 90px;
  padding: 0 24px;
}

.subpage-card {
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-xl);
  padding: 56px 50px;
  box-shadow: var(--shadow-viscous-md);
}

.subpage-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 26px;
  margin-bottom: 38px;
}

.subpage-title {
  font-size: 2.3rem;
  font-weight: 900;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 12px;
}

.subpage-subtitle {
  font-size: 1.02rem;
  color: var(--text-muted);
}

.content-block {
  margin-bottom: 38px;
}

.content-block h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.content-block h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 22px;
  background: var(--gold-gradient);
  border-radius: 2px;
}

.content-block p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.82;
  margin-bottom: 14px;
}

.content-block ul {
  padding-left: 20px;
  margin-bottom: 16px;
}

.content-block ul li {
  list-style-type: disc;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 10px;
}

.alert-callout {
  padding: 18px 24px;
  border-radius: var(--radius-md);
  margin: 22px 0;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  font-size: 0.95rem;
  line-height: 1.7;
}

.alert-danger {
  background: rgba(225, 29, 72, 0.08);
  border: 1px solid rgba(225, 29, 72, 0.25);
  color: #e11d48;
}

.alert-success {
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  color: var(--gold-secondary);
}

.alert-info {
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  color: var(--text-primary);
}

.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gold-secondary);
  margin-bottom: 26px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--gold-subtle);
}

.back-home-link:hover {
  background: var(--gold-primary);
  color: #ffffff;
}

/* 推荐资讯卡片流 (Articles Bento Stream) */
.articles-bento-stream {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

.article-bento-item {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-viscous-sm);
  transition: var(--transition-fluid);
}

.article-bento-item:hover {
  transform: translateY(-4px);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-viscous-md);
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
}

.article-tag {
  font-size: 0.78rem;
  font-weight: 750;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--gold-subtle);
  color: var(--gold-secondary);
}

.article-date {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.article-item-title {
  font-size: 1.32rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-item-summary {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.74;
}

/* --------------------------------------------------------------------------
   12.1 长篇深度 SEO 文章排版规范 (Article Reader & SEO Infrastructure)
   -------------------------------------------------------------------------- */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

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

.breadcrumb-separator {
  color: var(--gold-secondary);
  font-size: 0.75rem;
}

.article-header {
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 28px;
  margin-bottom: 32px;
}

.article-headline {
  font-size: 2.35rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1.28;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
}

.article-meta-bar {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.author-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--text-primary);
  font-weight: 700;
}

.author-avatar-sm {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--gold-gradient);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
}

/* 文章目录 (Table of Contents - TOC) */
.toc-container {
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 38px;
}

.toc-title {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-list {
  padding-left: 0;
  list-style: none;
}

.toc-list li {
  margin-bottom: 10px;
  position: relative;
  padding-left: 20px;
}

.toc-list li::before {
  content: "✦";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--gold-primary);
  font-size: 0.75rem;
}

.toc-list a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color var(--transition-fast);
}

.toc-list a:hover {
  color: var(--gold-secondary);
  text-decoration: underline;
}

/* 正文深度排版 */
.article-prose {
  font-size: 1.04rem;
  color: var(--text-secondary);
  line-height: 1.84;
}

.article-prose h2 {
  font-size: 1.6rem;
  font-weight: 850;
  color: var(--text-primary);
  margin: 42px 0 18px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-prose h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 24px;
  background: var(--gold-gradient);
  border-radius: 2px;
}

.article-prose h3 {
  font-size: 1.25rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 28px 0 12px;
}

.article-prose p {
  margin-bottom: 18px;
}

.article-prose strong {
  color: var(--text-primary);
  font-weight: 700;
}

.article-prose ul, .article-prose ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

.article-prose ul li {
  list-style-type: disc;
  margin-bottom: 8px;
}

.article-prose ol li {
  list-style-type: decimal;
  margin-bottom: 8px;
}

/* 数据对比表格 */
.prose-table-wrapper {
  overflow-x: auto;
  margin: 28px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-viscous-sm);
}

.prose-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.92rem;
  background: var(--bg-card-solid);
}

.prose-table th {
  background: var(--gold-subtle);
  color: var(--text-primary);
  font-weight: 800;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-gold);
}

.prose-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
}

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

/* 行内配置代码块 */
.code-callout {
  background: var(--bg-page-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  font-family: SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.88rem;
  color: var(--text-primary);
  margin: 22px 0;
  overflow-x: auto;
  line-height: 1.6;
}

/* 正文内置转化 CTA 卡片 */
.article-inline-cta {
  background: var(--gold-subtle);
  border: 1px solid var(--border-gold);
  border-radius: var(--radius-xl);
  padding: 34px 30px;
  margin: 44px 0;
  text-align: center;
  box-shadow: var(--shadow-viscous-sm);
}

.article-inline-cta h4 {
  font-size: 1.35rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.article-inline-cta p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
  max-width: 620px;
  margin-left: auto;
  margin-right: auto;
}

/* 文章专属 FAQ 区块 */
.article-faq-section {
  margin-top: 50px;
  border-top: 1px solid var(--border-light);
  padding-top: 36px;
}

.article-faq-title {
  font-size: 1.55rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 24px;
}

/* 相关阅读网格 (Related Articles) */
.related-posts-section {
  margin-top: 56px;
  border-top: 1px solid var(--border-light);
  padding-top: 36px;
}

.related-posts-title {
  font-size: 1.55rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 24px;
}

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

.related-post-card {
  background: var(--bg-card-solid);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  transition: var(--transition-fluid);
  display: flex;
  flex-direction: column;
}

.related-post-card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-viscous-md);
}

.related-post-tag {
  font-size: 0.74rem;
  font-weight: 750;
  color: var(--gold-secondary);
  margin-bottom: 8px;
}

.related-post-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1.4;
  margin-bottom: 8px;
}

.related-post-desc {
  font-size: 0.86rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   13. 移动端响应式断点与单栏适配 (@media)
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-headline {
    font-size: 2.8rem;
  }
  .features-bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-bento-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.flagship-featured {
    transform: none;
  }
  .pricing-card.flagship-featured:hover {
    transform: translateY(-8px);
  }
  .reviews-bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .mobile-menu-toggle {
    display: inline-flex;
  }

  /* 移动端全屏流体抽屉菜单 */
  .mobile-drawer {
    display: none;
    position: fixed;
    top: 78px;
    left: 0;
    width: 100%;
    background: var(--bg-card-solid);
    border-bottom: 1px solid var(--border-card);
    padding: 24px;
    box-shadow: var(--shadow-viscous-lg);
    z-index: 999;
    flex-direction: column;
    gap: 14px;
  }

  .mobile-drawer.open {
    display: flex;
  }

  .mobile-drawer .nav-link {
    font-size: 1.05rem;
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-light);
    border-radius: 0;
  }

  .hero-section {
    padding: 55px 0 65px;
  }

  .hero-headline {
    font-size: 2.25rem;
  }

  .hero-intro-text {
    font-size: 1.04rem;
  }

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

  .hero-cta-group .btn {
    width: 100%;
  }

  .hero-bento-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 24px 18px;
  }

  .metric-bento-item:nth-child(2)::after {
    display: none;
  }

  .metric-num {
    font-size: 1.85rem;
  }

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

  .unlock-bento-grid {
    grid-template-columns: 1fr;
  }

  .unlock-bento-card {
    padding: 30px 24px;
  }

  .bento-chips-matrix {
    grid-template-columns: 1fr;
  }

  .reviews-bento-grid {
    grid-template-columns: 1fr;
  }

  .subpage-card {
    padding: 34px 22px;
  }

  .subpage-title {
    font-size: 1.85rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .hero-headline {
    font-size: 1.95rem;
  }
  .hero-bento-metrics {
    grid-template-columns: 1fr;
  }
  .metric-bento-item::after {
    display: none !important;
  }
  .metric-bento-item {
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 14px;
  }
  .metric-bento-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
}