/* ===================================================================
   瞬云 (SHUN-YUN) - 纯白陶瓷拟态全站主题系统 (Periwinkle Porcelain System)
   - 提取自官方品牌色：瞬云鸢尾蓝紫 (#6971DB / #7B7EE2)
   - 基础冰瓷玉白底板：#F2F7FA (Pristine Alabaster Surface)
   - 触觉浮雕双重阴影 (Tactile Embossed Shadows) 与瓷光高光微倒角
   - 物理触压压缩感 (Analog Tactile Click Compression)
   =================================================================== */

:root {
  /* 白天陶瓷模式 (Default - 冰瓷玉白与瞬云原色) */
  --bg-surface: #f2f7fa;
  --bg-ceramic: #f8fafc;
  --bg-ceramic-raised: #fbfcfe;
  --bg-ceramic-inset: #e8eef5;
  --bg-nav: rgba(242, 247, 250, 0.9);

  /* 官方品牌核心主题色 (提取自原图 #6971DB / #7B7EE2) */
  --brand-primary: #6971db;
  --brand-primary-hover: #5860cc;
  --brand-primary-light: #7b7ee2;
  --brand-primary-active: #4c53b8;
  --brand-primary-subtle: #edf0fc;
  --brand-primary-glow: rgba(105, 113, 219, 0.3);
  --brand-primary-shadow: 0 6px 20px rgba(105, 113, 219, 0.35);

  /* 陶瓷浮雕双向阴影 (Tactile Embossed Shadows) */
  --shadow-embossed-sm: 4px 4px 10px rgba(152, 168, 188, 0.32), -4px -4px 10px rgba(255, 255, 255, 0.98);
  --shadow-embossed-md: 7px 7px 18px rgba(152, 168, 188, 0.36), -7px -7px 18px rgba(255, 255, 255, 1);
  --shadow-embossed-lg: 10px 14px 28px rgba(152, 168, 188, 0.4), -10px -10px 24px rgba(255, 255, 255, 1);
  --shadow-embossed-hover: 12px 16px 32px rgba(152, 168, 188, 0.3), -10px -10px 26px rgba(255, 255, 255, 1);

  /* 物理内凹微阴影 (Physical Inset Shadows) */
  --shadow-inset-sm: inset 2px 2px 5px rgba(152, 168, 188, 0.42), inset -2px -2px 5px rgba(255, 255, 255, 0.95);
  --shadow-inset-md: inset 3px 3px 7px rgba(152, 168, 188, 0.48), inset -3px -3px 7px rgba(255, 255, 255, 1);
  --shadow-inset-deep: inset 4px 4px 9px rgba(152, 168, 188, 0.52), inset -4px -4px 9px rgba(255, 255, 255, 1);

  /* 瓷光高光与微边框 */
  --border-porcelain: 1px solid rgba(255, 255, 255, 0.9);
  --border-subtle: 1px solid rgba(222, 230, 240, 0.75);
  --border-brand: 1px solid rgba(105, 113, 219, 0.35);

  /* 文字配色 */
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #8292a4;
  --text-inverse: #ffffff;

  /* 辅助状态色 */
  --accent-emerald: #059669;
  --accent-amber: #d97706;
  --accent-rose: #e11d48;
  --accent-cyan: #0284c7;

  /* 圆角与触觉过渡 */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --haptic-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: 0.15s ease;
}

/* 黑夜黑曜石陶瓷模式 (Dark Obsidian Ceramic) */
[data-theme="dark"] {
  --bg-surface: #0b0e1a;
  --bg-ceramic: #111628;
  --bg-ceramic-raised: #161c33;
  --bg-ceramic-inset: #090c17;
  --bg-nav: rgba(11, 14, 26, 0.92);

  /* 暗色模式下瞬云蓝紫自动调光为高辉度鸢尾极光 */
  --brand-primary: #818cf8;
  --brand-primary-hover: #9aa5fc;
  --brand-primary-light: #a5b4fc;
  --brand-primary-active: #6366f1;
  --brand-primary-subtle: rgba(129, 140, 248, 0.14);
  --brand-primary-glow: rgba(129, 140, 248, 0.42);
  --brand-primary-shadow: 0 6px 22px rgba(129, 140, 248, 0.38);

  --shadow-embossed-sm: 4px 4px 10px rgba(0, 0, 0, 0.55), -3px -3px 8px rgba(255, 255, 255, 0.035);
  --shadow-embossed-md: 7px 7px 18px rgba(0, 0, 0, 0.65), -5px -5px 14px rgba(255, 255, 255, 0.04);
  --shadow-embossed-lg: 10px 14px 28px rgba(0, 0, 0, 0.75), -7px -7px 18px rgba(255, 255, 255, 0.045);
  --shadow-embossed-hover: 12px 18px 34px rgba(0, 0, 0, 0.8), -8px -8px 22px rgba(255, 255, 255, 0.05);

  --shadow-inset-sm: inset 2px 2px 5px rgba(0, 0, 0, 0.65), inset -2px -2px 5px rgba(255, 255, 255, 0.03);
  --shadow-inset-md: inset 3px 3px 7px rgba(0, 0, 0, 0.8), inset -3px -3px 7px rgba(255, 255, 255, 0.04);
  --shadow-inset-deep: inset 4px 4px 10px rgba(0, 0, 0, 0.9), inset -4px -4px 10px rgba(255, 255, 255, 0.045);

  --border-porcelain: 1px solid rgba(255, 255, 255, 0.06);
  --border-subtle: 1px solid rgba(30, 41, 59, 0.8);
  --border-brand: 1px solid rgba(129, 140, 248, 0.4);

  --text-main: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #627288;
  --text-inverse: #0b0e1a;

  --accent-emerald: #10b981;
  --accent-amber: #fbbf24;
  --accent-rose: #f43f5e;
  --accent-cyan: #38bdf8;
}

/* ===================================================================
   基础排版与重置
   =================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-surface);
  color: var(--text-main);
  line-height: 1.65;
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  position: relative;
}

/* 陶瓷质感微环境光晕 (融合瞬云蓝紫光晕) */
.ceramic-ambient-glow {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 640px;
  background: radial-gradient(circle at 50% 0%, var(--brand-primary-glow) 0%, rgba(242, 247, 250, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

[data-theme="dark"] .ceramic-ambient-glow {
  background: radial-gradient(circle at 50% 0%, var(--brand-primary-glow) 0%, rgba(11, 14, 26, 0) 70%);
}

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

img, svg {
  display: block;
}

.container {
  width: 100%;
  max-width: 1220px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 1;
}

/* ===================================================================
   页眉导航栏 (Pill Menu & Ceramic Header)
   =================================================================== */
.site-header {
  position: fixed;
  top: 14px;
  left: 0;
  right: 0;
  z-index: 1000;
  pointer-events: none;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-nav);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: var(--border-porcelain);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-embossed-md);
  padding: 8px 18px;
  pointer-events: auto;
  transition: all var(--transition-normal);
}

/* 品牌 Logo 区域 */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text-main);
  user-select: none;
  padding: 4px 6px;
}

.brand-logo-img {
  height: 44px;
  width: auto;
  max-width: 52px;
  object-fit: contain;
  transition: transform var(--transition-normal);
  filter: drop-shadow(0 3px 8px var(--brand-primary-glow));
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.08) rotate(-3deg);
}

.brand-text-accent {
  color: var(--brand-primary);
  margin-left: 2px;
}

/* 顶部胶囊导航目录 (Top Pill Menu) */
.nav-pill-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  background: var(--bg-ceramic-inset);
  padding: 4px 6px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-inset-sm);
}

.nav-pill-item a {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-pill-item a:hover {
  color: var(--brand-primary);
  background: rgba(255, 255, 255, 0.7);
}

[data-theme="dark"] .nav-pill-item a:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* 推荐资讯特殊微高亮胶囊 */
.nav-pill-item.pill-news a {
  color: var(--brand-primary);
  font-weight: 700;
  position: relative;
}

.nav-pill-item.pill-news a::after {
  content: "HOT";
  font-size: 0.62rem;
  font-weight: 800;
  color: #ffffff;
  background: var(--brand-primary);
  border-radius: 4px;
  padding: 1px 4px;
  margin-left: 4px;
  vertical-align: top;
}

/* 右侧操作区 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 精致陶瓷昼夜切换按钮 */
.theme-toggle-btn {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-embossed-sm);
  transition: all var(--transition-fast);
  position: relative;
}

.theme-toggle-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-embossed-md);
  color: var(--brand-primary);
}

.theme-toggle-btn:active {
  transform: translateY(1px);
  box-shadow: var(--shadow-inset-sm);
}

.theme-toggle-btn svg {
  width: 19px;
  height: 19px;
  transition: transform var(--transition-normal);
}

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

[data-theme="dark"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon {
  display: block;
  color: var(--accent-amber);
  transform: rotate(360deg);
}

/* ===================================================================
   物理触觉触压按钮 (Analog Tactile Click Compression Buttons)
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 11px 24px;
  border-radius: var(--radius-pill);
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  text-align: center;
  white-space: nowrap;
  user-select: none;
  line-height: 1.2;
}

/* 瞬云主题主按钮 (Brand Primary Tactile Button) */
.btn-primary {
  background: var(--brand-primary);
  color: #ffffff !important;
  box-shadow: var(--brand-primary-shadow), var(--shadow-embossed-sm);
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-primary:hover {
  background: var(--brand-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px var(--brand-primary-glow), var(--shadow-embossed-md);
}

/* 按钮物理机械触压微互动 (Analog Tactile Click Compression) */
.btn-primary:active,
.btn:active {
  transform: translateY(2px) scale(0.98);
  box-shadow: inset 2px 2px 5px rgba(0, 0, 0, 0.35), 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 陶瓷浮雕次级按钮 (Ceramic Embossed Secondary) */
.btn-ceramic {
  background: var(--bg-ceramic);
  color: var(--text-main);
  border: var(--border-porcelain);
  box-shadow: var(--shadow-embossed-sm);
}

.btn-ceramic:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-embossed-md);
  color: var(--brand-primary);
}

.btn-ceramic:active {
  transform: translateY(1px) scale(0.98);
  box-shadow: var(--shadow-inset-sm);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.86rem;
}

.btn-lg {
  padding: 15px 34px;
  font-size: 1.08rem;
}

/* ===================================================================
   主视觉区 (Hero Section - 醒目标题 + 品牌名 + 简介)
   =================================================================== */
.hero-section {
  padding-top: 150px;
  padding-bottom: 85px;
  text-align: center;
  position: relative;
}

.hero-badge-plate {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 20px;
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-embossed-sm);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--brand-primary);
  margin-bottom: 28px;
}

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

@keyframes pulse-dot {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.35); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* 醒目大标题（包含当前品牌名‘瞬云’并融入精准原色） */
.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 4.1rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 22px;
  color: var(--text-main);
}

.hero-title .brand-highlight {
  color: var(--brand-primary);
  position: relative;
  display: inline-block;
  text-shadow: 0 4px 18px var(--brand-primary-glow);
}

/* 主视觉简介 (Hero Intro / Brief Description) */
.hero-intro-plate {
  max-width: 820px;
  margin: 0 auto 38px auto;
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-sm);
  padding: 24px 32px;
  text-align: left;
}

.hero-intro-plate h2,
.hero-intro-plate h3 {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--brand-primary);
  margin: 0 0 8px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-intro-text {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* 关键指标陶瓷立板 (Stats Plate) */
.hero-stats-plate {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
  padding: 26px 32px;
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  text-align: center;
}

.stat-item {
  padding: 6px;
  border-right: var(--border-subtle);
}

.stat-item:last-child {
  border-right: none;
}

.stat-value {
  font-size: 1.95rem;
  font-weight: 900;
  color: var(--brand-primary);
  line-height: 1.15;
  margin-bottom: 5px;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.86rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* ===================================================================
   板块公共样式 (Section Common)
   =================================================================== */
.section {
  padding: 95px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 55px auto;
}

.section-tag-pill {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-primary);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  padding: 5px 16px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.9rem, 3.8vw, 2.6rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--text-main);
  margin-bottom: 14px;
}

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

/* ===================================================================
   产品核心优势 (3个陶瓷图文卡片)
   3-Column Monolithic Ceramic Plate Layout
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.feature-ceramic-plate {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  position: relative;
}

.feature-ceramic-plate:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-hover);
}

.feature-icon-socket {
  width: 62px;
  height: 62px;
  border-radius: var(--radius-md);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  margin-bottom: 26px;
  transition: transform var(--transition-normal);
}

.feature-ceramic-plate:hover .feature-icon-socket {
  transform: scale(1.08) rotate(3deg);
  color: var(--brand-primary-hover);
}

.feature-icon-socket svg {
  width: 32px;
  height: 32px;
  fill: currentColor;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 14px;
}

.feature-text {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  background: var(--bg-ceramic-inset);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-inset-sm);
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 10px;
}

.feature-list li:last-child {
  margin-bottom: 0;
}

.feature-list svg {
  width: 16px;
  height: 16px;
  fill: var(--accent-emerald);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体支持图卡 (Streaming Media Section)
   =================================================================== */
.streaming-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.streaming-ceramic-card {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-embossed-sm);
  padding: 26px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.streaming-ceramic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-md);
}

.streaming-logo-inset {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-weight: 900;
  font-size: 1.25rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.badge-netflix { background: #e50914; color: #fff; }
.badge-disney { background: #113ccf; color: #fff; }
.badge-youtube { background: #ff0000; color: #fff; }
.badge-spotify { background: #1db954; color: #fff; }
.badge-hbo { background: #5822b4; color: #fff; }
.badge-tiktok { background: #000000; color: #fff; }
.badge-prime { background: #00a8e1; color: #fff; }
.badge-hulu { background: #1ce783; color: #0b0f19; }

.streaming-name {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 6px 0;
}

.streaming-pill-status {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-emerald);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
}

.streaming-desc {
  font-size: 0.86rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

/* ===================================================================
   AI 模型支持图卡 (AI Support Section)
   =================================================================== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.ai-ceramic-plate {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.ai-ceramic-plate:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-hover);
}

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

.ai-avatar-inset {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.25rem;
  color: #fff;
  box-shadow: var(--shadow-embossed-sm);
}

.ai-avatar-chatgpt { background: linear-gradient(135deg, #10a37f, #007555); }
.ai-avatar-claude { background: linear-gradient(135deg, #d97706, #b45309); }
.ai-avatar-midjourney { background: linear-gradient(135deg, #6366f1, #4338ca); }
.ai-avatar-gemini { background: linear-gradient(135deg, #2563eb, #9333ea); }
.ai-avatar-perplexity { background: linear-gradient(135deg, #0ea5e9, #0369a1); }
.ai-avatar-copilot { background: linear-gradient(135deg, #0284c7, #1e40af); }

.ai-badge-model {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  color: var(--brand-primary);
}

.ai-plate-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.ai-plate-desc {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.ai-plate-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.ai-metric-item strong {
  color: var(--accent-emerald);
}

/* ===================================================================
   套餐价格对比表 (Pricing Section)
   - 物理内凹订阅周期切换 (Monthly, Quarterly, Annual)
   - Haptic physics micro-interactions: hover float +4px
   =================================================================== */
.cycle-switcher-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 45px;
}

.cycle-switcher-plate {
  display: inline-flex;
  align-items: center;
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-md);
  border-radius: var(--radius-pill);
  padding: 6px;
  gap: 8px;
}

.cycle-btn {
  background: transparent;
  border: none;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-secondary);
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  user-select: none;
}

.cycle-btn:hover {
  color: var(--brand-primary);
}

/* 选中的周期按钮物理内嵌陷入 (Authentic physical inset shadow toggle) */
.cycle-btn.active {
  background: var(--bg-ceramic);
  color: var(--brand-primary);
  box-shadow: var(--shadow-embossed-sm);
  border: var(--border-porcelain);
}

.cycle-discount-tag {
  font-size: 0.7rem;
  font-weight: 800;
  color: #ffffff;
  background: var(--accent-rose);
  padding: 2px 7px;
  border-radius: var(--radius-pill);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-ceramic-plate {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 38px 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.3s var(--haptic-spring), box-shadow 0.3s var(--haptic-spring);
}

.pricing-ceramic-plate:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-hover);
}

/* 热门推荐高亮板 */
.pricing-ceramic-plate.featured {
  border: var(--border-brand);
  box-shadow: var(--shadow-embossed-lg), 0 0 0 1px var(--brand-primary);
  transform: scale(1.02);
  z-index: 2;
}

.pricing-ceramic-plate.featured:hover {
  transform: scale(1.02) translateY(-4px);
  box-shadow: var(--shadow-embossed-hover), 0 0 0 1px var(--brand-primary);
}

.pricing-badge-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-primary);
  color: #ffffff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 18px;
  border-radius: var(--radius-pill);
  box-shadow: var(--brand-primary-shadow);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  min-height: 42px;
  margin-bottom: 22px;
  line-height: 1.5;
}

.plan-price-socket {
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  border-radius: var(--radius-md);
  padding: 16px 18px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  margin-bottom: 26px;
}

.price-currency {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--brand-primary);
  margin-right: 3px;
}

.price-num {
  font-size: 2.75rem;
  font-weight: 900;
  color: var(--text-main);
  letter-spacing: -0.03em;
  line-height: 1;
}

.price-period {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-left: 6px;
}

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

.plan-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 13px;
  line-height: 1.45;
}

.plan-features-list svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  margin-top: 2px;
}

.icon-check { fill: var(--accent-emerald); }
.icon-cross { fill: var(--text-muted); opacity: 0.45; }

.pricing-ceramic-plate .btn {
  width: 100%;
}

/* ===================================================================
   用户评价 (Testimonials Section)
   =================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.testimonial-ceramic-card {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.testimonial-ceramic-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-hover);
}

.rating-stars {
  display: flex;
  gap: 4px;
  color: var(--accent-amber);
  margin-bottom: 18px;
}

.rating-stars svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

.testimonial-quote {
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 24px;
  flex-grow: 1;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  padding: 12px 18px;
  border-radius: var(--radius-pill);
}

.user-avatar-inset {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--brand-primary);
  color: #ffffff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: var(--shadow-embossed-sm);
}

.user-meta-info h3,
.user-meta-info h4 {
  font-size: 0.98rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 0 0 2px 0;
}

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

/* ===================================================================
   常见问题解答 (FAQ Section - 陶瓷手风琴)
   =================================================================== */
.faq-wrapper {
  max-width: 860px;
  margin: 0 auto;
}

.faq-ceramic-item {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-embossed-sm);
  margin-bottom: 16px;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-ceramic-item:hover {
  box-shadow: var(--shadow-embossed-md);
}

.faq-question-bar {
  padding: 22px 28px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  user-select: none;
}

.faq-question-bar svg {
  width: 20px;
  height: 20px;
  fill: var(--text-secondary);
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}

.faq-ceramic-item.active .faq-question-bar svg {
  transform: rotate(180deg);
  fill: var(--brand-primary);
}

.faq-answer-plate {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0, 1, 0, 1), padding 0.35s ease;
  padding: 0 28px;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.75;
}

.faq-ceramic-item.active .faq-answer-plate {
  max-height: 500px;
  transition: max-height 0.4s cubic-bezier(1, 0, 1, 0), padding 0.35s ease;
  padding: 0 28px 24px 28px;
  border-top: 1px solid var(--border-subtle);
}

/* ===================================================================
   底端主转换横幅 (CTA Banner Plate)
   =================================================================== */
.cta-ceramic-banner {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-lg);
  padding: 65px 45px;
  text-align: center;
  margin-top: 30px;
  position: relative;
  overflow: hidden;
}

.cta-ceramic-banner::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -60px;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, var(--brand-primary-glow) 0%, transparent 70%);
  pointer-events: none;
}

.cta-banner-title {
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-banner-subtitle {
  font-size: 1.12rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 34px auto;
  line-height: 1.7;
}

/* ===================================================================
   极简页脚 (严格保留四个标题：网站地图、关于我们、服务条款、隐私政策)
   =================================================================== */
.site-footer {
  background: var(--bg-ceramic);
  border-top: var(--border-subtle);
  padding: 55px 0 40px 0;
  margin-top: 70px;
  box-shadow: var(--shadow-embossed-sm);
  transition: background var(--transition-normal);
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 44px;
  list-style: none;
  flex-wrap: wrap;
  margin-bottom: 28px;
}

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

.footer-nav-link:hover {
  color: var(--brand-primary);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
}

.footer-copyright {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ===================================================================
   独立子页面通用陶瓷样式 (about, terms, privacy, sitemap, news)
   =================================================================== */
.subpage-hero {
  padding-top: 140px;
  padding-bottom: 45px;
  text-align: center;
}

.subpage-title {
  font-size: clamp(2.1rem, 4.2vw, 3rem);
  font-weight: 900;
  color: var(--text-main);
  margin-bottom: 14px;
}

.subpage-subtitle {
  font-size: 1.08rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
}

.subpage-content {
  padding: 40px 0 80px 0;
  max-width: 920px;
  margin: 0 auto;
}

.article-ceramic-plate {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 40px 36px;
  margin-bottom: 34px;
}

.article-ceramic-plate h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.article-ceramic-plate h2::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 22px;
  background: var(--brand-primary);
  border-radius: var(--radius-pill);
}

.article-ceramic-plate p {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 18px;
}

.article-ceramic-plate p:last-child {
  margin-bottom: 0;
}

.article-ceramic-plate ul {
  list-style: none;
  margin: 18px 0;
}

.article-ceramic-plate ul li {
  position: relative;
  padding-left: 26px;
  margin-bottom: 12px;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.article-ceramic-plate ul li::before {
  content: "•";
  position: absolute;
  left: 10px;
  color: var(--brand-primary);
  font-weight: 900;
}

/* 陶瓷提醒框 */
.notice-box {
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 22px 0;
  font-size: 0.94rem;
  line-height: 1.7;
}

.notice-warning {
  background: rgba(225, 29, 72, 0.06);
  border: 1px solid rgba(225, 29, 72, 0.25);
  color: var(--accent-rose);
}

.notice-success {
  background: rgba(5, 150, 105, 0.06);
  border: 1px solid rgba(5, 150, 105, 0.25);
  color: var(--accent-emerald);
}

.notice-info {
  background: var(--brand-primary-subtle);
  border: 1px solid var(--border-brand);
  color: var(--brand-primary);
}

/* 资讯卡片网格 (推荐资讯专用) */
.news-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.news-card-plate {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.news-card-plate:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-hover);
}

.news-meta-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.news-tag {
  font-size: 0.76rem;
  font-weight: 800;
  color: var(--brand-primary);
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

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

.news-title {
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
  line-height: 1.4;
}

.news-summary {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.news-read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--brand-primary);
}

.news-read-more:hover {
  gap: 10px;
}

/* 网站地图链接标签 */
.sitemap-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
}

.sitemap-link-tag {
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.sitemap-link-tag:hover {
  color: var(--brand-primary);
  box-shadow: var(--shadow-embossed-sm);
  transform: translateY(-2px);
}

/* ===================================================================
   深度 SEO 长文专区样式系统 (Long-form In-depth Article Layout)
   - 面包屑导航 Breadcrumbs
   - 目录 Table of Contents (TOC)
   - 排版 Typography & Comparison Tables
   - 文章专属 FAQ 问答板块
   - 相关阅读推荐网格 Related Articles
   =================================================================== */
.breadcrumb-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

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

.breadcrumb-bar a:hover {
  color: var(--brand-primary);
}

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

.article-header-card {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-embossed-md);
  padding: 42px 36px 32px 36px;
  margin-bottom: 30px;
}

.article-main-title {
  font-size: clamp(1.85rem, 3.8vw, 2.5rem);
  font-weight: 900;
  line-height: 1.3;
  color: var(--text-main);
  letter-spacing: -0.025em;
  margin-bottom: 18px;
}

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

.article-meta-info span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.article-summary-lead {
  font-size: 1.06rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-top: 18px;
  background: var(--bg-ceramic-inset);
  box-shadow: var(--shadow-inset-sm);
  padding: 16px 22px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--brand-primary);
}

/* 目录 (Table of Contents) */
.article-toc-plate {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-embossed-sm);
  padding: 24px 28px;
  margin: 32px 0 40px 0;
}

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

.toc-header svg {
  width: 20px;
  height: 20px;
  fill: var(--brand-primary);
}

.toc-list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 24px;
}

.toc-list li a {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.93rem;
  color: var(--text-secondary);
  padding: 4px 0;
  transition: all var(--transition-fast);
}

.toc-list li a:hover {
  color: var(--brand-primary);
  transform: translateX(4px);
}

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

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

.article-body-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 46px 0 18px 0;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 12px;
}

.article-body-content h2::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 24px;
  background: var(--brand-primary);
  border-radius: var(--radius-pill);
}

.article-body-content h3 {
  font-size: 1.28rem;
  font-weight: 800;
  color: var(--text-main);
  margin: 28px 0 14px 0;
}

.article-body-content p {
  margin-bottom: 20px;
}

.article-body-content strong {
  color: var(--text-main);
  font-weight: 700;
}

.article-body-content ul,
.article-body-content ol {
  margin: 18px 0 24px 0;
  padding-left: 24px;
}

.article-body-content li {
  margin-bottom: 10px;
  line-height: 1.75;
}

/* 对比表格 */
.comparison-table-wrapper {
  overflow-x: auto;
  margin: 28px 0 34px 0;
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-embossed-sm);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.95rem;
}

.article-table th {
  background: var(--bg-ceramic-inset);
  color: var(--text-main);
  font-weight: 800;
  padding: 14px 18px;
  border-bottom: var(--border-subtle);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: var(--border-subtle);
  color: var(--text-secondary);
}

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

.article-table tr:hover td {
  background: rgba(105, 113, 219, 0.04);
}

/* 官方内链高光引导条 (Internal Link Card) */
.internal-link-card {
  background: var(--bg-ceramic);
  border: var(--border-brand);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-embossed-sm);
  padding: 22px 26px;
  margin: 34px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

.internal-link-text h4 {
  font-size: 1.12rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
}

.internal-link-text p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  margin: 0;
}

/* 相关阅读推荐板块 (Related Articles Grid) */
.related-posts-section {
  margin-top: 55px;
  padding-top: 40px;
  border-top: var(--border-subtle);
}

.related-section-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.related-card {
  background: var(--bg-ceramic);
  border: var(--border-porcelain);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-embossed-sm);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.related-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-embossed-hover);
}

.related-card-tag {
  font-size: 0.74rem;
  font-weight: 800;
  color: var(--brand-primary);
  margin-bottom: 8px;
}

.related-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 10px;
  flex-grow: 1;
}

.related-card-date {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===================================================================
   响应式适配 (@media 媒体查询)
   手机端完美单栏，手指易触控 (Tap Target >= 48px)
   =================================================================== */
@media (max-width: 1080px) {
  .nav-pill-menu {
    display: none;
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-ceramic-plate.featured {
    transform: none;
  }
}

@media (max-width: 768px) {
  .site-header {
    top: 8px;
  }

  .nav-container {
    padding: 6px 14px;
  }

  .brand-logo-img {
    height: 38px;
  }

  .hero-section {
    padding-top: 110px;
    padding-bottom: 55px;
  }

  .hero-intro-plate {
    padding: 18px 20px;
  }

  .hero-stats-plate {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding: 20px 16px;
  }

  .stat-item {
    border-right: none;
    border-bottom: var(--border-subtle);
    padding-bottom: 12px;
  }

  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }

  /* 核心优势单栏 */
  .features-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  /* 流媒体双栏 */
  .streaming-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  /* AI 卡片单栏 */
  .ai-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* 价格表单栏 */
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

  /* 评价单栏 */
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* 推荐资讯单栏 */
  .news-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  /* 文章目录与相关阅读手机端单栏 */
  .toc-list {
    grid-template-columns: 1fr;
    gap: 6px;
  }

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

  /* 按钮全屏易按，适配手机手指点击 */
  .btn {
    width: 100%;
    min-height: 48px;
    font-size: 1rem;
  }

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

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

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

  .footer-nav {
    gap: 16px 20px;
  }
}

@media (max-width: 480px) {
  .streaming-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats-plate {
    grid-template-columns: 1fr;
  }

  .stat-item {
    border-bottom: var(--border-subtle);
  }

  .stat-item:last-child {
    border-bottom: none;
  }

  .cycle-switcher-plate {
    width: 100%;
    justify-content: space-between;
  }

  .cycle-btn {
    padding: 8px 14px;
    font-size: 0.88rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 12px;
  }
}