/* ===================================================================
   红杏云 (RedApricot Cloud) - 极鲜多汁蜜杏微透拟态原生样式表
   Juicy ripe-apricot translucent glassmorphic UI design
   Artisanal Palette:
     - Warm milk-froth white: #faf8f5
     - Glowing ripe apricot-amber: #f97316 / #fb923c
     - Vivid nectarine crimson: #e11d48 / #f43f5e
   =================================================================== */

:root {
  /* 白天模式 (默认)：温润奶泡白 + 熟成金杏橙 + 鲜润油桃红 */
  --bg-primary: #faf8f5;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-card-hover: rgba(255, 255, 255, 0.92);
  --bg-glass: rgba(250, 248, 245, 0.82);
  
  --apricot-amber: #f97316;
  --apricot-light: #fb923c;
  --nectarine-crimson: #e11d48;
  --nectarine-soft: #f43f5e;
  
  --accent-gradient: linear-gradient(135deg, #fb923c 0%, #f97316 40%, #e11d48 100%);
  --accent-gradient-hover: linear-gradient(135deg, #fdba74 0%, #fb923c 35%, #e11d48 95%);
  --accent-pill: rgba(249, 115, 22, 0.08);

  --text-primary: #1c1917;
  --text-secondary: #57534e;
  --text-muted: #78716c;

  --border-color: rgba(249, 115, 22, 0.14);
  --border-focus: rgba(249, 115, 22, 0.45);
  --liquid-rim: inset 0 1.5px 1px 0 rgba(255, 255, 255, 0.95), inset 0 -1.5px 1.5px 0 rgba(249, 115, 22, 0.08);

  --badge-bg: rgba(249, 115, 22, 0.1);
  --badge-text: #ea580c;
  --badge-border: rgba(249, 115, 22, 0.22);

  /* 多层级超柔环境漫反射光影 */
  --shadow-sm: 0 2px 8px rgba(249, 115, 22, 0.04);
  --shadow-plush: 0 16px 36px -8px rgba(249, 115, 22, 0.11), 0 6px 16px -2px rgba(225, 29, 72, 0.06), 0 1px 3px rgba(0, 0, 0, 0.02);
  --shadow-hover: 0 24px 52px -10px rgba(249, 115, 22, 0.18), 0 12px 28px -4px rgba(225, 29, 72, 0.12), 0 0 0 1.5px rgba(249, 115, 22, 0.22);
  --shadow-glow: 0 12px 32px -4px rgba(249, 115, 22, 0.45);

  --nav-backdrop: blur(20px);
  --card-backdrop: blur(18px);

  /* 弹性表面张力与果冻果肉缓冲曲线 */
  --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --damping-soft: cubic-bezier(0.25, 0.8, 0.25, 1);
  --transition-speed: 0.32s;
}

[data-theme="dark"] {
  /* 暗黑模式：深曜黑李暗夜 + 炽光金杏 + 亮润油桃红 */
  --bg-primary: #0e0d14;
  --bg-secondary: #161420;
  --bg-card: rgba(24, 21, 35, 0.68);
  --bg-card-hover: rgba(33, 29, 48, 0.86);
  --bg-glass: rgba(14, 13, 20, 0.82);

  --apricot-amber: #fb923c;
  --apricot-light: #fdba74;
  --nectarine-crimson: #f43f5e;
  --nectarine-soft: #fb7185;

  --accent-gradient: linear-gradient(135deg, #fb923c 0%, #f97316 45%, #e11d48 100%);
  --accent-gradient-hover: linear-gradient(135deg, #fed7aa 0%, #fb923c 40%, #f43f5e 100%);
  --accent-pill: rgba(251, 146, 60, 0.12);

  --text-primary: #fafaf9;
  --text-secondary: #d6d3d1;
  --text-muted: #a8a29e;

  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(251, 146, 60, 0.5);
  --liquid-rim: inset 0 1.5px 1px 0 rgba(255, 255, 255, 0.14), inset 0 -1.5px 1.5px 0 rgba(251, 146, 60, 0.16);

  --badge-bg: rgba(251, 146, 60, 0.14);
  --badge-text: #fdba74;
  --badge-border: rgba(251, 146, 60, 0.3);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.35);
  --shadow-plush: 0 18px 42px -6px rgba(0, 0, 0, 0.65), 0 0 22px rgba(249, 115, 22, 0.14);
  --shadow-hover: 0 28px 60px -8px rgba(0, 0, 0, 0.8), 0 0 32px rgba(251, 146, 60, 0.28), 0 0 0 1.5px rgba(251, 146, 60, 0.35);
  --shadow-glow: 0 14px 36px -4px rgba(249, 115, 22, 0.55);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 84px; /* 锚点吸顶导航对齐偏移 */
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.68;
  transition: background-color var(--transition-speed) ease, color var(--transition-speed) ease;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 动态光斑与流动液态焦散水光背景 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(850px circle at var(--caustic-x, 50%) var(--caustic-y, 25%), rgba(249, 115, 22, 0.11), rgba(225, 29, 72, 0.04) 45%, transparent 75%),
    radial-gradient(600px circle at 85% 75%, rgba(251, 146, 60, 0.07), transparent 60%);
  pointer-events: none;
  z-index: 0;
  transition: opacity 0.5s ease;
}

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

img, svg {
  vertical-align: middle;
}

/* 容器布局 */
.container {
  width: 100%;
  max-width: 1220px;
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

/* ===================================================================
   顶部导航栏 (Navbar)
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  background-color: var(--bg-glass);
  backdrop-filter: var(--nav-backdrop);
  -webkit-backdrop-filter: var(--nav-backdrop);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px -2px rgba(249, 115, 22, 0.05);
  z-index: 100;
  transition: background-color var(--transition-speed) ease, border-color var(--transition-speed) ease;
}

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

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.brand-logo-img {
  height: 42px;
  width: auto;
  max-width: 195px;
  display: block;
  object-fit: contain;
  transition: transform var(--transition-speed) var(--spring-bounce);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.03);
}

/* 暗黑模式下为 Logo 添加微透温润胶囊底托 */
[data-theme="dark"] .brand-logo-img {
  background: rgba(255, 255, 255, 0.96);
  padding: 3px 8px;
  border-radius: 10px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.45);
}

.brand-tag {
  font-size: 0.72rem;
  padding: 0.2rem 0.55rem;
  background: var(--accent-pill);
  color: var(--apricot-amber);
  border-radius: 9999px;
  font-weight: 700;
  border: 1px solid var(--badge-border);
  white-space: nowrap;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 550;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0.65rem;
  border-radius: 12px;
  transition: all var(--transition-speed) var(--damping-soft);
}

.nav-link:hover,
.nav-link.active {
  color: var(--apricot-amber);
  background: var(--accent-pill);
}

/* 重点突出新增的“推荐资讯”入口 */
.nav-link.nav-highlight {
  color: var(--nectarine-crimson);
  font-weight: 650;
  background: rgba(225, 29, 72, 0.08);
  border: 1px solid rgba(225, 29, 72, 0.18);
}

.nav-link.nav-highlight:hover {
  background: rgba(225, 29, 72, 0.14);
  color: #be123c;
  transform: translateY(-1px);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* 昼夜切换按钮：精致半透明玻璃磨砂、自然旋转、高阶质感 */
.theme-toggle-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-speed) var(--spring-bounce);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.theme-toggle-btn:hover {
  color: var(--apricot-amber);
  border-color: var(--border-focus);
  transform: scale(1.08) rotate(8deg);
  box-shadow: var(--shadow-plush);
}

.theme-toggle-btn:active {
  transform: scale(0.92);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  transition: transform 0.45s var(--spring-bounce), opacity 0.3s ease;
  position: absolute;
}

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

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

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

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

/* 移动端汉堡切换按钮 */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 10px;
}

.mobile-toggle svg {
  width: 26px;
  height: 26px;
}

/* ===================================================================
   按钮通用规范 (CTA) - 触感果冻微压尼阻 (Pillow-soft Haptic Damping)
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.8rem 1.75rem;
  font-size: 0.98rem;
  font-weight: 650;
  border-radius: 9999px;
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
  transition: all 0.28s var(--spring-bounce);
  position: relative;
  user-select: none;
}

.btn:active {
  /* 柔软阻尼回弹微缩 */
  transform: translateY(2px) scale(0.965);
  transition-duration: 0.1s;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: var(--accent-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -6px rgba(249, 115, 22, 0.52);
  color: #ffffff;
}

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

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  color: var(--apricot-amber);
  transform: translateY(-2px);
  box-shadow: var(--shadow-plush);
}

.btn-nav {
  padding: 0.55rem 1.35rem;
  font-size: 0.92rem;
}

.btn-lg {
  padding: 0.95rem 2.3rem;
  font-size: 1.08rem;
}

/* ===================================================================
   Hero 主视觉区 (醒目标题 + 详细简介)
   =================================================================== */
.hero-section {
  padding: 6.5rem 0 5rem;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.5rem 1.25rem;
  border-radius: 9999px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border: 1px solid var(--badge-border);
  box-shadow: var(--liquid-rim), var(--shadow-sm);
  font-size: 0.88rem;
  font-weight: 650;
  margin-bottom: 2rem;
  animation: floatApricot 4s ease-in-out infinite;
}

.pulse-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--apricot-amber);
  box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.7);
  animation: pulseApricot 2s infinite;
}

@keyframes pulseApricot {
  0% { box-shadow: 0 0 0 0 rgba(249, 115, 22, 0.75); }
  70% { box-shadow: 0 0 0 10px rgba(249, 115, 22, 0); }
  100% { box-shadow: 0 0 0 0 rgba(249, 115, 22, 0); }
}

@keyframes floatApricot {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

.hero-title {
  font-size: 3.55rem;
  font-weight: 850;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin-bottom: 1.6rem;
  color: var(--text-primary);
}

.hero-title .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subtitle {
  font-size: 1.24rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin: 0 auto 2.8rem;
  line-height: 1.8;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.35rem;
  margin-bottom: 3.8rem;
  flex-wrap: wrap;
}

/* 核心指标统计卡 - 28px 圆角有机玻璃质感 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  max-width: 980px;
  margin: 0 auto;
  padding: 2.2rem 2.5rem;
  border-radius: 28px;
  background: var(--bg-card);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  border: 1px solid var(--border-color);
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  transition: transform var(--transition-speed) var(--spring-bounce);
}

.hero-stats:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.stat-item {
  text-align: center;
}

.stat-num {
  font-size: 2.25rem;
  font-weight: 850;
  color: var(--apricot-amber);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
  font-weight: 550;
}

/* ===================================================================
   模块通用标题
   =================================================================== */
.section {
  padding: 6rem 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 3.8rem;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--apricot-amber);
  margin-bottom: 0.85rem;
}

.section-title {
  font-size: 2.45rem;
  font-weight: 850;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

/* ===================================================================
   产品核心优势介绍 (3个图文卡片) - 28px 圆角透光水凝卡片
   =================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 2.6rem 2.2rem;
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  transition: all var(--transition-speed) var(--spring-bounce);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  transform: translateY(-8px) scale(1.015);
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-hover);
}

.feature-card:active {
  transform: scale(0.975);
  transition-duration: 0.1s;
}

.feature-icon-wrapper {
  width: 62px;
  height: 62px;
  border-radius: 20px;
  background: var(--accent-pill);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--apricot-amber);
  margin-bottom: 1.75rem;
  box-shadow: var(--liquid-rim);
  transition: transform 0.4s var(--spring-bounce), background 0.3s ease, color 0.3s ease;
}

.feature-card:hover .feature-icon-wrapper {
  transform: scale(1.12) rotate(6deg);
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 8px 20px -2px rgba(249, 115, 22, 0.4);
}

.feature-icon-wrapper svg {
  width: 30px;
  height: 30px;
}

.feature-title {
  font-size: 1.4rem;
  font-weight: 750;
  margin-bottom: 0.85rem;
  color: var(--text-primary);
}

.feature-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.6rem;
  flex-grow: 1;
}

.feature-list {
  list-style: none;
  border-top: 1px dashed var(--border-color);
  padding-top: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.feature-list li {
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.feature-list li svg {
  width: 17px;
  height: 17px;
  color: var(--apricot-amber);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体支持与 AI 支持展示区 (双图卡微透设计)
   =================================================================== */
.dual-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.2rem;
}

.showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 2.75rem;
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  transition: all var(--transition-speed) var(--spring-bounce);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.showcase-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-hover);
}

.showcase-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.showcase-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.4rem 0.95rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 700;
  background: var(--accent-pill);
  color: var(--apricot-amber);
  border: 1px solid var(--badge-border);
  box-shadow: var(--liquid-rim);
  white-space: nowrap;
}

.showcase-title {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
}

.showcase-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  line-height: 1.72;
  margin-bottom: 2rem;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.95rem;
  margin-bottom: 1.8rem;
}

.platform-pill {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 0.95rem 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.9rem;
  font-weight: 650;
  color: var(--text-primary);
  box-shadow: var(--liquid-rim), var(--shadow-sm);
  transition: all 0.25s var(--spring-bounce);
}

.platform-pill:hover {
  border-color: var(--apricot-amber);
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-plush);
}

.platform-pill-icon {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-pill);
  color: var(--apricot-amber);
  flex-shrink: 0;
}

.platform-pill-icon svg {
  width: 18px;
  height: 18px;
}

.showcase-footer-tips {
  background: var(--accent-pill);
  border-radius: 16px;
  padding: 0.95rem 1.25rem;
  font-size: 0.88rem;
  color: var(--apricot-amber);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: auto;
  font-weight: 600;
  border: 1px solid var(--badge-border);
}

.showcase-footer-tips svg {
  width: 19px;
  height: 19px;
  flex-shrink: 0;
}

/* ===================================================================
   套餐价格对比表 (Pricing) - 表面张力流体弹性压感动效
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.2rem;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 2.85rem 2.2rem;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  /* 果冻表面张力弹性缓冲过渡 */
  transition: transform 0.45s var(--spring-bounce), box-shadow 0.35s ease, border-color 0.3s ease;
  user-select: none;
}

.pricing-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-focus);
}

/* 点击/按下触发弹性压缩，松开后如果冻般果冻弹回 (Elastomeric bounce-back) */
.pricing-card:active {
  transform: translateY(2px) scale(0.965);
  transition-duration: 0.12s;
  box-shadow: var(--shadow-sm);
}

.pricing-card.featured {
  border-color: var(--apricot-amber);
  background: var(--bg-card-hover);
  box-shadow: var(--liquid-rim), var(--shadow-glow);
  transform: scale(1.04);
}

.pricing-card.featured:hover {
  transform: scale(1.04) translateY(-8px);
}

.pricing-card.featured:active {
  transform: scale(0.98) translateY(2px);
  transition-duration: 0.12s;
}

/* 热门推荐单行徽标 - 彻底防止换行 */
.popular-ribbon {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #ffffff;
  padding: 0.4rem 1.35rem;
  border-radius: 9999px;
  font-size: 0.82rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 16px rgba(249, 115, 22, 0.45);
  white-space: nowrap;
}

.plan-name {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.plan-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 1.6rem;
  min-height: 2.8rem;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 0.3rem;
  margin-bottom: 1.85rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px dashed var(--border-color);
}

.price-currency {
  font-size: 1.6rem;
  font-weight: 750;
  color: var(--text-primary);
}

.price-val {
  font-size: 3.35rem;
  font-weight: 850;
  line-height: 1;
  color: var(--text-primary);
  letter-spacing: -0.04em;
}

.price-cycle {
  font-size: 0.94rem;
  color: var(--text-muted);
  font-weight: 550;
}

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  margin-bottom: 2.4rem;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-size: 0.94rem;
  color: var(--text-secondary);
}

.plan-feature-item svg {
  width: 18px;
  height: 18px;
  color: var(--apricot-amber);
  flex-shrink: 0;
}

.plan-feature-item.highlight {
  font-weight: 650;
  color: var(--text-primary);
}

.plan-cta {
  width: 100%;
}

/* ===================================================================
   用户评价 (Testimonials)
   =================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 2.4rem 2rem;
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  backdrop-filter: var(--card-backdrop);
  -webkit-backdrop-filter: var(--card-backdrop);
  transition: all var(--transition-speed) var(--spring-bounce);
  display: flex;
  flex-direction: column;
}

.review-card:hover {
  transform: translateY(-6px) scale(1.015);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-hover);
}

.review-stars {
  display: flex;
  gap: 0.3rem;
  color: #f59e0b;
  margin-bottom: 1.2rem;
}

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

.review-content {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.6rem;
  flex-grow: 1;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 0.95rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--border-color);
}

.reviewer-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #ffffff;
  font-weight: 750;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.3);
}

.reviewer-name {
  font-size: 0.98rem;
  font-weight: 750;
  color: var(--text-primary);
}

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

/* ===================================================================
   常见问题解答 (FAQ)
   =================================================================== */
.faq-wrap {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--liquid-rim), var(--shadow-sm);
  backdrop-filter: var(--card-backdrop);
  transition: all var(--transition-speed) var(--damping-soft);
}

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

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.45rem 1.8rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-primary);
}

.faq-toggle-icon {
  width: 20px;
  height: 20px;
  color: var(--text-muted);
  transition: transform 0.35s var(--spring-bounce);
  flex-shrink: 0;
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(180deg);
  color: var(--apricot-amber);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 1.8rem;
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 280px;
  padding: 0 1.8rem 1.6rem;
}

/* ===================================================================
   底部行动呼吁横幅 (CTA Banner)
   =================================================================== */
.cta-banner-section {
  padding: 3rem 0 5.5rem;
}

.cta-banner-box {
  background: var(--accent-gradient);
  border-radius: 32px;
  padding: 4.5rem 2.8rem;
  text-align: center;
  color: #ffffff;
  position: relative;
  overflow: hidden;
  box-shadow: 0 24px 50px -10px rgba(249, 115, 22, 0.5);
}

.cta-banner-title {
  font-size: 2.5rem;
  font-weight: 850;
  margin-bottom: 1.1rem;
  color: #ffffff;
}

.cta-banner-desc {
  font-size: 1.15rem;
  opacity: 0.95;
  max-width: 660px;
  margin: 0 auto 2.4rem;
  line-height: 1.7;
}

.btn-white {
  background: #ffffff;
  color: var(--apricot-amber);
  font-weight: 750;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.16);
}

.btn-white:hover {
  background: #faf8f5;
  color: var(--nectarine-crimson);
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.22);
}

/* ===================================================================
   页脚规范 (严格只保留四个标题，在新页面打开展示)
   =================================================================== */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4.2rem 0 2.8rem;
  transition: background-color var(--transition-speed) ease;
}

.footer-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2.8rem;
  list-style: none;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-size: 1.08rem;
  font-weight: 650;
  color: var(--text-secondary);
  position: relative;
  padding: 0.45rem 0.3rem;
  transition: color var(--transition-speed) ease;
}

.footer-nav-link:hover {
  color: var(--apricot-amber);
}

.footer-copyright {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   次级独立页面专用样式 (关于我们、服务条款、隐私政策、网站地图、推荐资讯)
   =================================================================== */
.page-hero {
  padding: 5.5rem 0 3.5rem;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-glass);
}

.page-title {
  font-size: 2.65rem;
  font-weight: 850;
  color: var(--text-primary);
  margin-bottom: 0.95rem;
}

.page-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.75;
}

.page-body-container {
  max-width: 940px;
  margin: 0 auto;
  padding: 4.5rem 1.5rem 6.5rem;
}

.content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 2.85rem;
  margin-bottom: 2.4rem;
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  backdrop-filter: var(--card-backdrop);
}

.content-card h2 {
  font-size: 1.55rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.3rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.content-card h2 svg {
  color: var(--apricot-amber);
  width: 26px;
  height: 26px;
}

.content-card p {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 1.1rem;
}

.content-card p:last-child {
  margin-bottom: 0;
}

.content-card ul {
  padding-left: 1.6rem;
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.85;
  margin-bottom: 1.1rem;
}

.notice-box {
  background: var(--accent-pill);
  border-left: 4px solid var(--apricot-amber);
  padding: 1.35rem 1.6rem;
  border-radius: 0 16px 16px 0;
  margin: 1.6rem 0;
  font-size: 0.98rem;
  color: var(--text-primary);
  line-height: 1.75;
}

/* 推荐资讯卡片流 */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 28px;
  padding: 2.4rem 2rem;
  box-shadow: var(--liquid-rim), var(--shadow-plush);
  backdrop-filter: var(--card-backdrop);
  transition: all var(--transition-speed) var(--spring-bounce);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px) scale(1.02);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-hover);
}

.article-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--accent-pill);
  color: var(--apricot-amber);
  margin-bottom: 1.2rem;
  align-self: flex-start;
  white-space: nowrap;
}

.article-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.85rem;
  line-height: 1.45;
}

.article-snippet {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1.1rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.article-link {
  color: var(--apricot-amber);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.article-link:hover {
  color: var(--nectarine-crimson);
}

/* 网站地图列表 */
.sitemap-group {
  margin-bottom: 2.2rem;
}

.sitemap-group h3 {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-color);
}

.sitemap-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.95rem;
  list-style: none;
}

.sitemap-item a {
  display: block;
  padding: 0.95rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 550;
  box-shadow: var(--liquid-rim), var(--shadow-sm);
  transition: all 0.25s var(--spring-bounce);
}

.sitemap-item a:hover {
  border-color: var(--apricot-amber);
  color: var(--apricot-amber);
  transform: translateX(5px);
  box-shadow: var(--shadow-plush);
}

/* ===================================================================
   响应式媒体查询 (@media) - 确保手机端完美单栏与按键友好
   =================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.9rem;
  }
  .features-grid,
  .pricing-grid,
  .reviews-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 74px;
    left: 0;
    width: 100%;
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.6rem;
    flex-direction: column;
    gap: 1.1rem;
    box-shadow: var(--shadow-hover);
  }

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

  .mobile-toggle {
    display: inline-flex;
  }

  .hero-section {
    padding: 3.8rem 0 3.2rem;
  }

  .hero-title {
    font-size: 2.25rem;
    line-height: 1.26;
  }

  .hero-subtitle {
    font-size: 1.05rem;
    margin-bottom: 2.2rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    padding: 1.6rem 1.2rem;
  }

  .stat-num {
    font-size: 1.75rem;
  }

  .features-grid,
  .dual-showcase-grid,
  .pricing-grid,
  .reviews-grid,
  .articles-grid,
  .sitemap-list {
    grid-template-columns: 1fr;
    gap: 1.6rem;
  }

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

  .section {
    padding: 4rem 0;
  }

  .section-title {
    font-size: 1.95rem;
  }

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

  .hero-cta-group .btn {
    width: 100%;
    min-height: 50px;
  }

  .footer-nav {
    flex-direction: column;
    gap: 1.3rem;
  }

  .cta-banner-box {
    padding: 2.8rem 1.6rem;
  }

  .cta-banner-title {
    font-size: 1.85rem;
  }
}

@media (max-width: 480px) {
  .brand-logo-img {
    height: 34px;
    max-width: 140px;
  }

  .brand-tag {
    display: none;
  }

  .hero-title {
    font-size: 1.95rem;
  }

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

  .stat-num {
    font-size: 1.55rem;
  }

  .content-card {
    padding: 1.8rem 1.3rem;
  }
}

/* ===================================================================
   深度长文 SEO 专栏页面样式 (Article Detail & SEO Architecture)
   =================================================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

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

.breadcrumb a:hover {
  color: var(--apricot-amber);
}

.breadcrumb-separator {
  color: var(--border-focus);
}

.article-header {
  margin-bottom: 2.5rem;
  text-align: left;
}

.article-post-title {
  font-size: 2.35rem;
  font-weight: 850;
  line-height: 1.3;
  color: var(--text-primary);
  margin-bottom: 1.2rem;
  letter-spacing: -0.02em;
}

.article-post-meta {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  flex-wrap: wrap;
}

.article-post-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

/* 文章目录 (Table of Contents) - 水凝磨砂卡片 */
.article-toc {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.6rem 2rem;
  margin: 2.2rem 0 3rem;
  box-shadow: var(--liquid-rim), var(--shadow-sm);
  backdrop-filter: var(--card-backdrop);
}

.article-toc-title {
  font-size: 1.15rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.article-toc-title svg {
  color: var(--apricot-amber);
  width: 20px;
  height: 20px;
}

.article-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.article-toc-list a {
  font-size: 0.95rem;
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.article-toc-list a:hover {
  color: var(--apricot-amber);
  transform: translateX(4px);
}

/* 文章正文排版 (Typography) */
.article-content {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: var(--text-primary);
  margin: 3rem 0 1.2rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px dashed var(--border-color);
  display: flex;
  align-items: center;
  gap: 0.65rem;
  scroll-margin-top: 90px;
}

.article-content h2::before {
  content: "";
  display: inline-block;
  width: 5px;
  height: 1.2em;
  background: var(--accent-gradient);
  border-radius: 9999px;
}

.article-content h3 {
  font-size: 1.3rem;
  font-weight: 750;
  color: var(--text-primary);
  margin: 2rem 0 0.9rem;
  scroll-margin-top: 90px;
}

.article-content p {
  margin-bottom: 1.4rem;
}

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

.article-content a.internal-anchor {
  color: var(--apricot-amber);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.article-content a.internal-anchor:hover {
  color: var(--nectarine-crimson);
}

.article-content ul,
.article-content ol {
  padding-left: 1.75rem;
  margin-bottom: 1.6rem;
}

.article-content li {
  margin-bottom: 0.55rem;
}

.article-content blockquote {
  background: var(--accent-pill);
  border-left: 4px solid var(--apricot-amber);
  padding: 1.2rem 1.6rem;
  border-radius: 0 16px 16px 0;
  margin: 2rem 0;
  font-style: normal;
  color: var(--text-primary);
}

/* 步骤/对比展示卡 */
.step-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.75rem;
  box-shadow: var(--liquid-rim), var(--shadow-sm);
}

.step-card-num {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-gradient);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 750;
  font-size: 0.9rem;
  margin-bottom: 0.85rem;
}

.step-card h4 {
  font-size: 1.12rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.step-card p {
  font-size: 0.92rem;
  margin-bottom: 0;
}

/* 提示对照表格 */
.comparison-table-wrap {
  overflow-x: auto;
  margin: 2.2rem 0;
  border-radius: 18px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  box-shadow: var(--liquid-rim), var(--shadow-sm);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.94rem;
}

.comparison-table th {
  background: var(--accent-pill);
  color: var(--text-primary);
  padding: 1rem 1.25rem;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
}

.comparison-table td {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

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

/* 文章内置 CTA 卡片 */
.article-inline-cta {
  background: var(--accent-gradient);
  color: #ffffff;
  border-radius: 24px;
  padding: 2.5rem;
  margin: 3.5rem 0;
  text-align: center;
  box-shadow: 0 16px 36px -6px rgba(249, 115, 22, 0.45);
}

.article-inline-cta h3 {
  font-size: 1.6rem;
  font-weight: 850;
  color: #ffffff;
  margin-bottom: 0.75rem;
}

.article-inline-cta p {
  font-size: 1rem;
  opacity: 0.95;
  max-width: 580px;
  margin: 0 auto 1.6rem;
  color: #ffffff;
}

/* 文章底部 FAQ */
.article-faq-section {
  margin: 3.5rem 0 2rem;
}

/* 相关阅读网格 (Related Articles) */
.related-section {
  margin-top: 4rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border-color);
}

.related-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 1.8rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.related-title svg {
  color: var(--apricot-amber);
  width: 24px;
  height: 24px;
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.related-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 1.5rem;
  box-shadow: var(--liquid-rim), var(--shadow-sm);
  transition: all 0.25s var(--spring-bounce);
  display: flex;
  flex-direction: column;
}

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

.related-card-title {
  font-size: 1.08rem;
  font-weight: 750;
  color: var(--text-primary);
  margin-bottom: 0.6rem;
  line-height: 1.45;
}

.related-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.85rem;
  flex-grow: 1;
}

.related-card-link {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--apricot-amber);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

@media (max-width: 768px) {
  .article-post-title {
    font-size: 1.85rem;
  }
  .step-grid,
  .related-grid {
    grid-template-columns: 1fr;
  }
}