/* ==========================================================================
   泡泡狗 (paopaogou.mom) - Superhuman 极速生产力级极简原生样式表
   设计语言：冰川白背景 (#FAFCFF) · 纯白微凸面板 (#FFFFFF) · 1px 冰蓝边框 (#E0EBF5)
   电光天蓝 (#0EA5E9) · 实时测速翠绿 (#10B981) · 零视觉杂质 · 极致数据排版
   ========================================================================== */

:root {
  /* 白天模式 (默认配色 - Glacial White Minimalist) */
  --bg-main: #FAFCFF;
  --bg-card: #FFFFFF;
  --bg-card-subtle: #F3F7FA;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --border-ice: #E0EBF5;
  --border-ice-hover: #BAE6FD;
  --border-focus: #0EA5E9;
  
  --text-main: #0A1128;
  --text-secondary: #4A5568;
  --text-muted: #7E8DA0;
  --text-dim: #9EB0C6;
  
  --accent-sky: #0EA5E9;
  --accent-sky-dark: #0284C7;
  --accent-sky-light: #F0F9FF;
  --accent-emerald: #10B981;
  --accent-emerald-light: #ECFDF5;
  --accent-amber: #F59E0B;
  --accent-rose: #F43F5E;
  
  --panel-shadow: 0 8px 30px -4px rgba(10, 17, 40, 0.04), 0 2px 6px -1px rgba(10, 17, 40, 0.02);
  --panel-shadow-hover: 0 16px 36px -6px rgba(14, 165, 233, 0.09), 0 4px 12px -2px rgba(10, 17, 40, 0.03);
  --pill-shadow: 0 4px 16px -2px rgba(10, 17, 40, 0.06);
  --cta-shadow: 0 8px 20px -3px rgba(14, 165, 233, 0.35);
  --cta-shadow-hover: 0 12px 26px -4px rgba(14, 165, 233, 0.5);
  
  --header-bg: rgba(250, 252, 255, 0.85);
  --nav-pill-bg: rgba(255, 255, 255, 0.92);
  --nav-active-pill: #F0F9FF;
  
  --radius-xs: 6px;
  --radius-sm: 10px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-base: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
  /* 夜间模式配色 (Deep Obsidian Minimalist) */
  --bg-main: #070A13;
  --bg-card: #0E1526;
  --bg-card-subtle: #141E34;
  --bg-glass: rgba(14, 21, 38, 0.88);
  --border-ice: rgba(224, 235, 245, 0.12);
  --border-ice-hover: rgba(56, 189, 248, 0.35);
  --border-focus: #38BDF8;
  
  --text-main: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  --text-dim: #475569;
  
  --accent-sky: #38BDF8;
  --accent-sky-dark: #0284C7;
  --accent-sky-light: rgba(56, 189, 248, 0.12);
  --accent-emerald: #34D399;
  --accent-emerald-light: rgba(52, 211, 153, 0.12);
  
  --panel-shadow: 0 8px 30px -4px rgba(0, 0, 0, 0.5), 0 2px 6px -1px rgba(0, 0, 0, 0.3);
  --panel-shadow-hover: 0 16px 36px -6px rgba(56, 189, 248, 0.15), 0 4px 12px -2px rgba(0, 0, 0, 0.4);
  --pill-shadow: 0 4px 16px -2px rgba(0, 0, 0, 0.4);
  --cta-shadow: 0 8px 20px -3px rgba(56, 189, 248, 0.3);
  --cta-shadow-hover: 0 12px 26px -4px rgba(56, 189, 248, 0.45);
  
  --header-bg: rgba(7, 10, 19, 0.85);
  --nav-pill-bg: rgba(14, 21, 38, 0.92);
  --nav-active-pill: rgba(56, 189, 248, 0.15);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "SF Pro Display", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-main);
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* 极简网格微底纹 (纯CSS，无图片) */
.bg-subtle-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(14, 165, 233, 0.05) 0%, transparent 60%),
    linear-gradient(to right, rgba(224, 235, 245, 0.3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(224, 235, 245, 0.3) 1px, transparent 1px);
  background-size: 100% 100%, 48px 48px, 48px 48px;
  opacity: 0.6;
}

[data-theme="dark"] .bg-subtle-grid {
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 60%),
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
}

/* 容器规范 */
.container {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   Magnetic Floating Nav Pill (磁吸居中悬浮导航栏)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 14px;
  z-index: 100;
  transition: all var(--transition-base);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 14px;
  background: var(--nav-pill-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-full);
  box-shadow: var(--pill-shadow);
  transition: all var(--transition-base);
}

/* 品牌文字 */
.brand-group {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text-main);
  padding: 4px 10px;
}

.brand-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--accent-sky);
  box-shadow: 0 0 10px var(--accent-sky);
}

.brand-name {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent-sky);
  background: var(--accent-sky-light);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-ice);
  letter-spacing: 0.05em;
}

/* 导航链接集合 (包含首页、各板块锚点与推荐资讯) */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-link {
  display: inline-block;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 6px 12px;
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover {
  color: var(--text-main);
  background: var(--nav-active-pill);
}

.nav-link.active {
  color: var(--accent-sky);
  background: var(--nav-active-pill);
  font-weight: 600;
}

.nav-link-news {
  color: var(--accent-sky) !important;
  font-weight: 600;
  position: relative;
}

.nav-link-news::after {
  content: '';
  display: inline-block;
  width: 5px;
  height: 5px;
  background-color: var(--accent-rose);
  border-radius: 50%;
  margin-left: 4px;
  vertical-align: super;
}

/* 导航右侧按钮组 */
.nav-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 精致半透明专业昼夜切换开关 */
.theme-switch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-ice);
  background: var(--bg-card);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.theme-switch-btn:hover {
  border-color: var(--accent-sky);
  transform: translateY(-1px);
}

.theme-icon-sun,
.theme-icon-moon {
  width: 17px;
  height: 17px;
  transition: transform var(--transition-smooth), opacity var(--transition-smooth);
}

[data-theme="light"] .theme-icon-sun {
  opacity: 1;
  color: #D97706;
}

[data-theme="light"] .theme-icon-moon {
  display: none;
}

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

[data-theme="dark"] .theme-icon-moon {
  opacity: 1;
  color: #38BDF8;
}

/* 按钮通用规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  padding: 8px 18px;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-sky);
  color: #FFFFFF !important;
  box-shadow: var(--cta-shadow);
}

.btn-primary:hover {
  background: var(--accent-sky-dark);
  box-shadow: var(--cta-shadow-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-main);
  border-color: var(--border-ice);
}

.btn-secondary:hover {
  border-color: var(--accent-sky);
  color: var(--accent-sky);
  background: var(--bg-card-subtle);
  transform: translateY(-1px);
}

.btn-lg {
  font-size: 1rem;
  padding: 12px 28px;
}

/* ==========================================================================
   Hero Section (单列极简生产力流 + 实时测速对比部件)
   ========================================================================== */
.hero-section {
  padding: 70px 0 50px;
  text-align: center;
}

.hero-notice-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent-sky);
  margin-bottom: 22px;
  box-shadow: var(--panel-shadow);
}

.hero-headline {
  font-size: clamp(2.3rem, 5.2vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.035em;
  color: var(--text-main);
  margin-bottom: 18px;
}

.hero-subheadline {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 740px;
  margin: 0 auto 32px;
  line-height: 1.65;
  font-weight: 400;
}

.hero-cta-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

/* 交互特性 3: 一键复制与配置快速体验条 */
.interactive-copy-card {
  max-width: 660px;
  margin: 0 auto 46px;
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-full);
  padding: 6px 8px 6px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--panel-shadow);
  transition: all var(--transition-base);
}

.interactive-copy-card:hover {
  border-color: var(--accent-sky);
}

.copy-snippet {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.82rem;
  color: var(--text-muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.copy-tag {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 4px;
  background: var(--accent-emerald-light);
  color: var(--accent-emerald);
}

.copy-btn {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-ice);
  color: var(--text-main);
  border-radius: var(--radius-full);
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.copy-btn:hover {
  background: var(--accent-sky-light);
  color: var(--accent-sky);
  border-color: var(--accent-sky);
}

.copy-btn.copied {
  background: var(--accent-emerald);
  color: #FFFFFF;
  border-color: var(--accent-emerald);
}

/* ==========================================================================
   交互特性 1: Live Speed Benchmark Widget (实时竞速对比面板)
   ========================================================================== */
.benchmark-card {
  max-width: 860px;
  margin: 0 auto;
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  box-shadow: var(--panel-shadow);
  text-align: left;
  transition: all var(--transition-base);
}

.benchmark-card:hover {
  box-shadow: var(--panel-shadow-hover);
  border-color: var(--border-ice-hover);
}

.benchmark-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 14px;
}

.benchmark-title-wrap h2,
.benchmark-title-wrap h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.benchmark-title-wrap p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* 场景切换药丸组 */
.scenario-tabs {
  display: flex;
  gap: 8px;
  background: var(--bg-card-subtle);
  padding: 4px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-ice);
}

.scenario-pill {
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.scenario-pill.active {
  background: var(--bg-card);
  color: var(--accent-sky);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

/* 进度对比条群组 */
.race-track-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.race-item {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.race-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.86rem;
  font-weight: 600;
}

.race-label {
  display: flex;
  align-items: center;
  gap: 8px;
}

.race-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.indicator-paopao {
  background-color: var(--accent-emerald);
  box-shadow: 0 0 8px var(--accent-emerald);
}

.indicator-common {
  background-color: var(--text-dim);
}

.race-metric {
  font-family: ui-monospace, monospace;
  font-size: 0.86rem;
}

.race-bar-bg {
  width: 100%;
  height: 12px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-full);
  overflow: hidden;
  position: relative;
}

.race-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fill-paopao {
  background: linear-gradient(90deg, var(--accent-sky) 0%, var(--accent-emerald) 100%);
  width: 98%;
}

.fill-common {
  background: var(--text-dim);
  width: 32%;
}

.benchmark-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 26px;
  padding-top: 20px;
  border-top: 1px solid var(--border-ice);
}

.benchmark-stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-val {
  font-size: 1.25rem;
  font-weight: 800;
  font-family: ui-monospace, monospace;
  color: var(--text-main);
}

.stat-emerald {
  color: var(--accent-emerald);
}

/* ==========================================================================
   通用Section板块排版 (超纯净无杂质)
   ========================================================================== */
.section-wrap {
  padding: 88px 0;
}

.section-head {
  max-width: 680px;
  margin: 0 auto 50px;
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--accent-sky);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.25;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ==========================================================================
   产品核心优势介绍 (3个图文卡片)
   ========================================================================== */
.cards-triplet {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-lg);
  padding: 34px 28px;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-base);
}

.feature-panel:hover {
  transform: translateY(-4px);
  border-color: var(--border-ice-hover);
  box-shadow: var(--panel-shadow-hover);
}

.panel-header-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--accent-sky);
  background: var(--accent-sky-light);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-ice);
  width: fit-content;
  margin-bottom: 20px;
}

.panel-title {
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  letter-spacing: -0.015em;
}

.panel-body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  flex-grow: 1;
}

.panel-data-metrics {
  border-top: 1px solid var(--border-ice);
  padding-top: 16px;
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
}

.metric-pair {
  display: flex;
  flex-direction: column;
}

.metric-k {
  color: var(--text-muted);
  font-size: 0.72rem;
}

.metric-v {
  font-family: ui-monospace, monospace;
  font-weight: 700;
  color: var(--accent-emerald);
}

/* ==========================================================================
   流媒体图卡 & AI计算支持图卡 (纯净数据风)
   ========================================================================== */
.duo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.ecosystem-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-xl);
  padding: 36px;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-base);
}

.ecosystem-panel:hover {
  border-color: var(--border-ice-hover);
  box-shadow: var(--panel-shadow-hover);
}

.eco-top {
  margin-bottom: 24px;
}

.eco-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  display: inline-block;
  margin-bottom: 14px;
}

.eco-badge-media {
  background: rgba(244, 63, 94, 0.1);
  color: var(--accent-rose);
  border: 1px solid rgba(244, 63, 94, 0.2);
}

.eco-badge-ai {
  background: var(--accent-sky-light);
  color: var(--accent-sky);
  border: 1px solid var(--border-ice);
}

.eco-name {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
}

.eco-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 数据矩阵标签 */
.chip-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 22px 0;
}

.chip-item {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  text-align: center;
  transition: all var(--transition-fast);
}

.chip-item:hover {
  background: var(--bg-card);
  border-color: var(--accent-sky);
}

.chip-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 2px;
}

.chip-sub {
  font-size: 0.7rem;
  color: var(--accent-emerald);
  font-weight: 600;
}

.eco-bottom-bar {
  border-top: 1px solid var(--border-ice);
  padding-top: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.eco-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  color: var(--accent-emerald);
}

/* ==========================================================================
   清晰套餐价格对比表 (参考网上真实机场/专线套餐价格)
   ========================================================================== */
.pricing-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.plan-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-xl);
  padding: 36px 30px;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-base);
}

.plan-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-ice-hover);
  box-shadow: var(--panel-shadow-hover);
}

.plan-card.highlight {
  border: 2px solid var(--accent-sky);
  box-shadow: 0 16px 36px -6px rgba(14, 165, 233, 0.15), var(--panel-shadow);
}

.plan-flag {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-sky);
  color: #FFFFFF;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.plan-head {
  border-bottom: 1px solid var(--border-ice);
  padding-bottom: 22px;
  margin-bottom: 22px;
  text-align: center;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 4px;
}

.plan-caption {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.plan-price-group {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.plan-curr {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-sky);
}

.plan-figure {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-main);
  font-family: ui-monospace, monospace;
}

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

.plan-items {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-items li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-items li span.check {
  color: var(--accent-emerald);
  font-weight: 800;
}

.plan-items li span.dash {
  color: var(--text-dim);
}

.plan-items li.dimmed {
  color: var(--text-dim);
  text-decoration: line-through;
}

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

/* ==========================================================================
   真实用户反馈 (User Reviews)
   ========================================================================== */
.review-trio {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.review-box {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  transition: all var(--transition-base);
}

.review-box:hover {
  transform: translateY(-3px);
  border-color: var(--border-ice-hover);
  box-shadow: var(--panel-shadow-hover);
}

.review-quote {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

.review-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  border-top: 1px solid var(--border-ice);
  padding-top: 14px;
}

.user-tag {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--accent-sky-light);
  color: var(--accent-sky);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
}

.user-details {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 4px;
}

.user-verified {
  color: var(--accent-emerald);
  font-size: 0.72rem;
}

.user-title {
  font-size: 0.74rem;
  color: var(--text-muted);
}

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
}

.accordion-item {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition-base);
}

.accordion-item:hover {
  border-color: var(--border-ice-hover);
}

.accordion-btn {
  width: 100%;
  padding: 18px 22px;
  text-align: left;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-main);
  gap: 14px;
}

.accordion-icon {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: transform var(--transition-base);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  color: var(--accent-sky);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
  padding: 0 22px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.65;
}

.accordion-item.active .accordion-content {
  max-height: 260px;
  padding-bottom: 20px;
}

/* ==========================================================================
   底部行动召唤面板
   ========================================================================== */
.closing-banner {
  margin: 50px auto 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-xl);
  padding: 56px 32px;
  text-align: center;
  box-shadow: var(--panel-shadow);
  position: relative;
  overflow: hidden;
}

.closing-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-sky), var(--accent-emerald), transparent);
}

.banner-heading {
  font-size: clamp(1.7rem, 3.2vw, 2.3rem);
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
  letter-spacing: -0.025em;
}

.banner-sub {
  font-size: 0.98rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 28px;
}

/* ==========================================================================
   页脚规范: 严格只保留 4 个标题，并在新页面打开
   ========================================================================== */
.footer-wrap {
  border-top: 1px solid var(--border-ice);
  background: var(--bg-card);
  padding: 42px 0 28px;
  margin-top: 60px;
  transition: all var(--transition-base);
}

.footer-nav-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.footer-btn {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  text-decoration: none;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  transition: all var(--transition-fast);
}

.footer-btn:hover {
  color: var(--accent-sky);
  background: var(--accent-sky-light);
}

.footer-copyright {
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-ice);
  padding-top: 18px;
}

/* ==========================================================================
   独立子页面通用版式 (关于我们、服务条款、隐私政策、网站地图、推荐资讯)
   ========================================================================== */
.article-page-wrap {
  padding: 40px 0 80px;
  max-width: 860px;
  margin: 0 auto;
}

.article-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--panel-shadow);
}

.article-header {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-ice);
}

.article-h1 {
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 10px;
  letter-spacing: -0.025em;
}

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

.article-block {
  margin-bottom: 30px;
}

.article-block h2 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-block h2::before {
  content: '';
  display: inline-block;
  width: 3px;
  height: 1.1em;
  background-color: var(--accent-sky);
  border-radius: 2px;
}

.article-block p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 12px;
  font-size: 0.94rem;
}

.article-block ul {
  padding-left: 20px;
  margin-bottom: 12px;
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.93rem;
}

.article-block li {
  margin-bottom: 6px;
}

/* ==========================================================================
   响应式媒体查询 (@media) 保证手机端单栏流与手指友好触控
   ========================================================================== */
@media (max-width: 992px) {
  .cards-triplet,
  .pricing-row,
  .review-trio {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .duo-grid {
    grid-template-columns: 1fr;
  }
  
  .benchmark-stats-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .site-header {
    top: 8px;
  }
  
  .nav-wrapper {
    padding: 6px 12px;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 56px;
    left: 10px;
    right: 10px;
    background: var(--bg-card);
    border: 1px solid var(--border-ice);
    border-radius: var(--radius-lg);
    box-shadow: var(--panel-shadow);
    padding: 18px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }
  
  .nav-menu.active {
    display: flex;
  }
  
  .nav-link {
    padding: 10px 14px;
    border-radius: var(--radius-sm);
  }
  
  .mobile-toggle-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    padding: 4px;
  }
  
  .hero-section {
    padding: 46px 0 34px;
  }
  
  .hero-headline {
    font-size: 1.95rem;
  }
  
  .hero-cta-bar {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-cta-bar .btn {
    width: 100%;
    min-height: 48px;
  }
  
  .interactive-copy-card {
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
    border-radius: var(--radius-lg);
    padding: 14px;
  }
  
  .copy-btn {
    text-align: center;
  }
  
  .benchmark-card {
    padding: 22px 18px;
  }
  
  .scenario-tabs {
    flex-wrap: wrap;
    width: 100%;
  }
  
  .scenario-pill {
    flex: 1;
    text-align: center;
    padding: 6px 10px;
  }
  
  .benchmark-stats-row {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .cards-triplet,
  .pricing-row,
  .review-trio {
    grid-template-columns: 1fr; /* 手机端完美单栏展示 */
  }
  
  .chip-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .footer-nav-bar {
    flex-direction: column;
    gap: 12px;
  }
  
  .article-panel {
    padding: 24px 18px;
  }
  
  .btn {
    min-height: 44px; /* 手指舒适点击 */
  }
}

@media (min-width: 769px) {
  .mobile-toggle-btn {
    display: none;
  }
}

/* ==========================================================================
   SEO 深度科普文章与资讯大厅扩展样式
   ========================================================================== */

/* 资讯中心文章大厅卡片网格 */
.insights-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 24px;
}

.insight-card {
  background: var(--bg-card);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--panel-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-base);
  text-decoration: none;
  color: inherit;
}

.insight-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-sky);
  box-shadow: var(--panel-shadow-hover);
}

.insight-card-top {
  margin-bottom: 18px;
}

.insight-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.insight-badge {
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  background: var(--accent-sky-light);
  color: var(--accent-sky);
  border: 1px solid var(--border-ice);
}

.badge-featured {
  background: var(--accent-emerald-light);
  color: var(--accent-emerald);
  border-color: rgba(16, 185, 129, 0.2);
}

.insight-title {
  font-size: 1.18rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 10px;
  transition: color var(--transition-fast);
}

.insight-card:hover .insight-title {
  color: var(--accent-sky);
}

.insight-excerpt {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.insight-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-ice);
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.insight-readmore {
  color: var(--accent-sky);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 目录 (Table of Contents - TOC) */
.toc-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-ice);
  border-left: 4px solid var(--accent-sky);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 28px 0 36px;
}

.toc-heading {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.toc-nav-list {
  list-style: none;
  padding-left: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-nav-list li {
  font-size: 0.9rem;
}

.toc-nav-list a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.toc-nav-list a:hover {
  color: var(--accent-sky);
  transform: translateX(4px);
}

/* 提示与高亮引言条 */
.callout-box {
  background: var(--accent-sky-light);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin: 24px 0;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.callout-box strong {
  color: var(--text-main);
}

.callout-emerald {
  background: var(--accent-emerald-light);
  border-color: rgba(16, 185, 129, 0.25);
}

/* 文章内置比较表格 */
.article-table-wrap {
  overflow-x: auto;
  margin: 24px 0;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-ice);
}

.article-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  text-align: left;
  background: var(--bg-card);
}

.article-table th {
  background: var(--bg-card-subtle);
  padding: 12px 16px;
  font-weight: 700;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-ice);
  white-space: nowrap;
}

.article-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-ice);
  color: var(--text-secondary);
}

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

/* 文章内专属 FAQ 结构 */
.article-faq-container {
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid var(--border-ice);
}

.article-faq-item {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  margin-bottom: 14px;
}

.article-faq-q {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-faq-a {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 文章末尾相关阅读矩阵 */
.related-reading-box {
  margin-top: 48px;
  padding-top: 32px;
  border-top: 2px dashed var(--border-ice);
}

.related-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.related-links-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.related-link-card {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-ice);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  text-decoration: none;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.related-link-card:hover {
  background: var(--bg-card);
  border-color: var(--accent-sky);
  transform: translateY(-2px);
}

.related-link-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
}

.related-link-card:hover .related-link-title {
  color: var(--accent-sky);
}

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

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