/* ===================================================================
   淘气兔 (TaoQiTu) 官方落地页 - 极简原生高性能 CSS 样式表
   主题：Cyber Carrot & Electric Sky (元气胡萝卜橙 + 电光天蓝 + 暗夜星空)
   零重型依赖、秒开级渲染、清晰对比按钮、Sticky 鲜明导航、原生响应式
   =================================================================== */

:root {
  /* 品牌色系：淘气兔·元气胡萝卜橙与电光天蓝 */
  --carrot-primary: #FF7A00;
  --carrot-bright: #FF941A;
  --carrot-deep: #EA580C;
  --sky-primary: #0EA5E9;
  --sky-light: #38BDF8;
  --sky-deep: #0284C7;
  --gold-accent: #FBBF24;
  --emerald-status: #10B981;
  --rose-badge: #F43F5E;

  /* 背景色阶 (Deep Night Slate) */
  --bg-primary: #0B0F19;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(31, 41, 55, 0.95);

  /* 文字颜色 */
  --text-main: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;

  /* 边框与光影 */
  --border-nav: 2px solid rgba(255, 122, 0, 0.35);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-card: rgba(255, 122, 0, 0.2);
  --glow-carrot: 0 6px 24px rgba(255, 122, 0, 0.4);
  --glow-sky: 0 6px 24px rgba(14, 165, 233, 0.35);

  /* 字体系统 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* 布局与圆角 */
  --container-max: 1200px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 环境氛围光晕 (Ambient Background Glow) */
.bg-ambient-glow {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  background: 
    radial-gradient(circle at 10% 12%, rgba(255, 122, 0, 0.12) 0%, transparent 45%),
    radial-gradient(circle at 88% 25%, rgba(14, 165, 233, 0.13) 0%, transparent 50%),
    radial-gradient(circle at 50% 85%, rgba(251, 191, 36, 0.08) 0%, transparent 60%);
}

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

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

/* 渐入动效 (Fade-in on scroll/load) */
.fade-in {
  animation: fadeInEffect 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeInEffect {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===================================================================
   顶部导航栏 (Navbar: Sticky with Clear Defined Border)
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(11, 15, 25, 0.92);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  /* 明确且清晰的导航栏与主体分界线 */
  border-bottom: var(--border-nav);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
  transition: var(--transition-normal);
}

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

/* 确保可点击回到首页 */
.nav-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  cursor: pointer;
  padding: 4px 0;
}

.nav-brand img {
  height: 44px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-muted);
  position: relative;
  padding: 8px 0;
  display: inline-block;
}

.nav-links a:hover {
  color: #FFFFFF;
}

.nav-links a::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2.5px;
  background: linear-gradient(90deg, var(--carrot-primary), var(--sky-primary));
  transition: width var(--transition-fast);
  border-radius: 2px;
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.hamburger-btn {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 122, 0, 0.3);
  color: var(--text-main);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  line-height: 0;
}

.hamburger-btn:hover {
  background: rgba(255, 122, 0, 0.15);
}

.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 76px;
  left: 0;
  width: 100%;
  background: rgba(17, 24, 39, 0.98);
  backdrop-filter: blur(20px);
  border-bottom: var(--border-nav);
  padding: 24px;
  flex-direction: column;
  gap: 16px;
  z-index: 99;
}

.mobile-nav-drawer.active {
  display: flex;
}

.mobile-nav-drawer a {
  font-size: 1.1rem;
  font-weight: 600;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===================================================================
   高辨识度按钮设计 (Distinct Buttons)
   具备饱满色块、渐变质感、微立体浮雕与明确点击态
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.96rem;
  font-weight: 700;
  padding: 12px 26px;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
  letter-spacing: 0.2px;
}

/* 核心行动主按钮：元气胡萝卜橙渐变 */
.btn-primary {
  background: linear-gradient(135deg, #FF941A 0%, #FF7A00 50%, #EA580C 100%);
  color: #FFFFFF;
  box-shadow: var(--glow-carrot);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(255, 122, 0, 0.6);
  filter: brightness(1.1);
}

.btn-primary:active {
  transform: translateY(1px);
}

/* 次要转化按钮：电光天蓝质感 */
.btn-secondary {
  background: rgba(14, 165, 233, 0.12);
  color: var(--sky-light);
  border-color: rgba(56, 189, 248, 0.45);
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(14, 165, 233, 0.24);
  border-color: var(--sky-light);
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: var(--glow-sky);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.12rem;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.88rem;
}

/* ===================================================================
   首屏横幅区 (Hero Section)
   =================================================================== */
.hero-section {
  padding: 65px 0 95px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* 促销元素：高亮打折标签 */
.discount-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(255, 122, 0, 0.12);
  border: 1.5px solid rgba(255, 122, 0, 0.45);
  color: #FFA347;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 6px 18px;
  border-radius: var(--radius-full);
  margin-bottom: 22px;
  box-shadow: 0 0 16px rgba(255, 122, 0, 0.2);
  animation: badgeGlow 2.5s infinite ease-in-out;
}

@keyframes badgeGlow {
  0%, 100% {
    box-shadow: 0 0 8px rgba(255, 122, 0, 0.2);
    border-color: rgba(255, 122, 0, 0.4);
  }
  50% {
    box-shadow: 0 0 24px rgba(255, 122, 0, 0.5);
    border-color: #FF941A;
  }
}

.discount-badge .badge-icon {
  font-size: 1.1rem;
}

.discount-badge .coupon-pill {
  background: rgba(255, 122, 0, 0.28);
  padding: 2px 8px;
  border-radius: 4px;
  color: #FFFFFF;
  font-family: var(--font-mono);
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 22px;
  letter-spacing: -0.02em;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #FFA347 0%, #FF7A00 40%, #38BDF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-desc {
  font-size: 1.16rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 34px;
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 0.9rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-subtle);
  padding-top: 24px;
  width: 100%;
}

.guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.guarantee-item svg {
  color: var(--emerald-status);
  flex-shrink: 0;
}

/* ===================================================================
   首屏右侧：淘气兔专属动态矢量艺术 (Animated Mascot & Tech Vector Art)
   =================================================================== */
.hero-visual-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-mascot-box {
  width: 100%;
  max-width: 480px;
  position: relative;
  padding: 20px;
}

/* 兔子吉祥物悬浮漂移动画 */
.mascot-svg-container {
  width: 100%;
  height: auto;
  animation: mascotFloat 4s ease-in-out infinite;
  filter: drop-shadow(0 20px 35px rgba(255, 122, 0, 0.25));
}

@keyframes mascotFloat {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-14px) rotate(1.2deg);
  }
}

/* 浮动营销要点标签 (Floating Marketing Badges) */
.floating-stat-card {
  position: absolute;
  background: rgba(17, 24, 39, 0.92);
  border: 1px solid rgba(255, 122, 0, 0.3);
  backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  padding: 10px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.6);
  z-index: 2;
  transition: var(--transition-fast);
}

.floating-stat-card:hover {
  transform: scale(1.05);
  border-color: var(--carrot-primary);
}

.stat-card-1 {
  top: 12px;
  right: -10px;
  animation: badgeBob 3.5s ease-in-out infinite 0.5s;
}

.stat-card-2 {
  bottom: 30px;
  left: -15px;
  animation: badgeBob 4s ease-in-out infinite 1s;
}

.stat-card-3 {
  bottom: -15px;
  right: 25px;
  animation: badgeBob 3.8s ease-in-out infinite 1.5s;
}

@keyframes badgeBob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.stat-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
}

.stat-icon.orange {
  background: rgba(255, 122, 0, 0.2);
  color: var(--carrot-primary);
}

.stat-icon.sky {
  background: rgba(14, 165, 233, 0.2);
  color: var(--sky-light);
}

.stat-icon.green {
  background: rgba(16, 185, 129, 0.2);
  color: var(--emerald-status);
}

.stat-info .stat-val {
  font-size: 0.96rem;
  font-weight: 800;
  color: #FFFFFF;
}

.stat-info .stat-sub {
  font-size: 0.76rem;
  color: var(--text-dim);
}

/* ===================================================================
   板块公共标题 (Section Headers)
   =================================================================== */
.section-wrapper {
  padding: 85px 0;
  position: relative;
  z-index: 1;
}

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

.section-tag {
  display: inline-block;
  font-size: 0.86rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.8px;
  color: var(--carrot-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 900;
  color: #FFFFFF;
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-desc {
  font-size: 1.08rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===================================================================
   核心优势图卡区 (Dynamic Cards Section)
   =================================================================== */
.features-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 45px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--carrot-bright);
  transform: translateY(-6px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5), var(--glow-carrot);
}

.feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--carrot-primary), var(--sky-primary));
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-card:hover::after {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(255, 122, 0, 0.15) 0%, rgba(14, 165, 233, 0.15) 100%);
  border: 1.5px solid rgba(255, 122, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  font-size: 1.8rem;
}

.feature-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.feature-card p {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 22px;
}

.feature-badges {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.feature-badge-pill {
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  color: var(--sky-light);
}

/* 流媒体与 AI 支持图卡 */
.media-ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.media-ai-card {
  background: linear-gradient(145deg, rgba(17, 24, 39, 0.9) 0%, rgba(15, 23, 42, 0.95) 100%);
  border: 1px solid rgba(255, 122, 0, 0.2);
  border-radius: var(--radius-lg);
  padding: 34px 30px;
  transition: var(--transition-normal);
}

.media-ai-card:hover {
  border-color: var(--sky-light);
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), var(--glow-sky);
}

.media-ai-card h3 {
  font-size: 1.35rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.service-tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.service-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-subtle);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-main);
  transition: var(--transition-fast);
}

.service-tag:hover {
  background: rgba(255, 122, 0, 0.18);
  border-color: var(--carrot-primary);
  color: #FFFFFF;
}

/* ===================================================================
   定价卡片区 (Pricing Section)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition-normal);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 122, 0, 0.4);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.5);
}

/* 推荐套餐高亮 (Card 2) */
.pricing-card.featured {
  background: linear-gradient(165deg, rgba(30, 41, 59, 0.95) 0%, rgba(17, 24, 39, 0.98) 100%);
  border: 2px solid var(--carrot-primary);
  box-shadow: 0 15px 45px rgba(255, 122, 0, 0.25), 0 0 0 1px var(--carrot-bright);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #FF941A 0%, #FF7A00 100%);
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 5px 20px;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 16px rgba(255, 122, 0, 0.6);
}

.plan-type-tag {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--carrot-primary);
  text-transform: uppercase;
  margin-bottom: 10px;
}

.plan-name {
  font-size: 1.55rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 18px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 1.55rem;
  font-weight: 700;
  color: #FFFFFF;
}

.price-number {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: #FFFFFF;
}

.price-cycle {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.plan-traffic-highlight {
  background: rgba(255, 122, 0, 0.1);
  border: 1px solid rgba(255, 122, 0, 0.25);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--carrot-bright);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-bottom: 34px;
  flex-grow: 1;
}

.plan-features-list li {
  font-size: 0.94rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features-list li svg {
  color: var(--emerald-status);
  flex-shrink: 0;
}

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

/* ===================================================================
   平台支持与客户端下载区 (Download Section)
   =================================================================== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 22px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition-normal);
}

.platform-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--sky-light);
  transform: translateY(-5px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.platform-icon {
  width: 68px;
  height: 68px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 2.1rem;
  border: 1px solid var(--border-subtle);
}

.platform-card h3 {
  font-size: 1.3rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.platform-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 24px;
  min-height: 44px;
}

.platform-card .btn {
  width: 100%;
  margin-top: auto;
}

/* ===================================================================
   深度特性解析区 (Why Choose Section)
   =================================================================== */
.why-grid-6 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  background: rgba(17, 24, 39, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  transition: var(--transition-fast);
}

.why-card:hover {
  background: rgba(30, 41, 59, 0.85);
  border-color: rgba(255, 122, 0, 0.4);
  transform: translateY(-3px);
}

.why-card-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.why-emoji {
  font-size: 1.6rem;
  line-height: 1;
}

.why-card h3 {
  font-size: 1.15rem;
  font-weight: 800;
  color: #FFFFFF;
}

.why-card p {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   底部转换 CTA 拦截区 (Bottom CTA Section)
   =================================================================== */
.cta-banner-wrapper {
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.22) 0%, rgba(14, 165, 233, 0.2) 100%);
  border: 2px solid rgba(255, 122, 0, 0.35);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
}

.cta-banner-wrapper::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 122, 0, 0.15) 0%, transparent 65%);
  pointer-events: none;
}

.cta-banner-title {
  font-size: 2.6rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 16px;
}

.cta-banner-desc {
  font-size: 1.18rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 36px auto;
  line-height: 1.75;
}

/* ===================================================================
   用户评价跑马灯区 (Testimonials Marquee Section)
   =================================================================== */
.marquee-wrapper {
  position: relative;
  width: 100%;
  overflow: hidden;
  padding: 24px 0;
  mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
}

.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: scroll-left 42s linear infinite;
}

.marquee-wrapper:hover .marquee-track {
  animation-play-state: paused;
}

@keyframes scroll-left {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px;
  width: 360px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--carrot-primary), var(--sky-primary));
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.15rem;
}

.review-author {
  font-size: 1rem;
  font-weight: 800;
  color: #FFFFFF;
}

.review-role {
  font-size: 0.82rem;
  color: var(--text-dim);
}

.review-stars {
  color: #FBBF24;
  font-size: 1rem;
  letter-spacing: 2.5px;
  margin-bottom: 12px;
}

.review-body {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ===================================================================
   常见问题解答区 (FAQ Section: Native details & summary)
   =================================================================== */
.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(255, 122, 0, 0.35);
}

.faq-item[open] {
  border-color: var(--carrot-primary);
  background: rgba(30, 41, 59, 0.85);
}

.faq-summary {
  list-style: none;
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  user-select: none;
}

.faq-summary::-webkit-details-marker {
  display: none;
}

.faq-icon-arrow {
  width: 22px;
  height: 22px;
  transition: transform var(--transition-fast);
  color: var(--carrot-primary);
}

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

.faq-content {
  padding: 0 24px 22px 24px;
  font-size: 0.96rem;
  color: var(--text-muted);
  line-height: 1.75;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 16px;
}

/* ===================================================================
   页脚区 (Footer: Only 4 Links As Explicitly Requested)
   只保留这四个标题：网站地图, 关于我们, 服务条款, 隐私政策
   =================================================================== */
.site-footer {
  background: #070A12;
  border-top: 1px solid var(--border-subtle);
  padding: 55px 0 35px 0;
  position: relative;
  z-index: 1;
}

.footer-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 26px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand img {
  height: 38px;
  width: auto;
}

.footer-nav-list {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.footer-nav-list a {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.footer-nav-list a:hover {
  color: var(--carrot-primary);
}

.footer-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--text-dim);
}

/* ===================================================================
   独立次级页面通用版式 (About, Terms, Privacy, Sitemap)
   =================================================================== */
.page-hero {
  padding: 70px 0 45px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.page-hero h1 {
  font-size: 2.8rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 14px;
}

.page-hero p {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
}

.static-page-content {
  max-width: 860px;
  margin: 50px auto 80px auto;
  padding: 0 20px;
}

.content-block {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 34px;
  margin-bottom: 30px;
}

.content-block h2 {
  font-size: 1.45rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-block p {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

.content-block ul {
  padding-left: 20px;
  margin-bottom: 16px;
  color: var(--text-muted);
  line-height: 1.75;
}

/* ===================================================================
   响应式媒体查询 (@media)
   =================================================================== */
@media (max-width: 1024px) {
  .hero-title {
    font-size: 2.6rem;
  }
  .features-grid-3 {
    grid-template-columns: 1fr;
  }
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .why-grid-6 {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin: 0 auto;
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions {
    display: none;
  }
  .hamburger-btn {
    display: block;
  }
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  .floating-stat-card {
    position: static;
    margin-top: 12px;
  }
  .media-ai-grid {
    grid-template-columns: 1fr;
  }
  .platform-grid {
    grid-template-columns: 1fr;
  }
  .why-grid-6 {
    grid-template-columns: 1fr;
  }
  .footer-top-row {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }
  .footer-nav-list {
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }
  .footer-bottom-row {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
  .cta-banner-wrapper {
    padding: 40px 20px;
  }
  .cta-banner-title {
    font-size: 1.8rem;
  }
}

/* ===================================================================
   推荐资讯中心 (Article Hub) & 文章阅读器 (Article Reader) 样式
   =================================================================== */

.hub-hero {
  padding: 65px 0 40px 0;
  text-align: center;
  border-bottom: 1px solid var(--border-subtle);
}

.hub-hero h1 {
  font-size: 2.8rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.hub-hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto;
  line-height: 1.75;
}

/* 面包屑导航 (Breadcrumb Navigation) */
.breadcrumb-nav {
  margin: 24px 0 20px 0;
  font-size: 0.92rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.breadcrumb-nav a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition-fast);
}

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

.breadcrumb-nav .separator {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.breadcrumb-nav .current {
  color: var(--text-main);
  font-weight: 600;
}

/* 文章列表 3 列网格 (Responsive 3-Column Tile Grid) */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin: 45px 0 85px 0;
}

.article-tile {
  background: var(--bg-card);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  transition: var(--transition-normal);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.4);
  position: relative;
  text-decoration: none;
}

.article-tile:hover {
  transform: translateY(-6px);
  border-color: var(--carrot-primary);
  box-shadow: 0 18px 42px rgba(0, 0, 0, 0.6), var(--glow-carrot);
  background: var(--bg-card-hover);
}

.article-tile-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.article-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(255, 122, 0, 0.12);
  border: 1px solid rgba(255, 122, 0, 0.35);
  border-radius: var(--radius-full);
  color: var(--carrot-bright);
  font-size: 0.8rem;
  font-weight: 700;
}

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

.article-tile-title {
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.45;
  color: #FFFFFF;
  margin-bottom: 14px;
  transition: color var(--transition-fast);
}

.article-tile:hover .article-tile-title {
  color: var(--carrot-primary);
}

.article-tile-excerpt {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  flex-grow: 1;
}

.article-tile-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--sky-light);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
}

.article-tile:hover .article-tile-footer span {
  transform: translateX(4px);
  display: inline-block;
  transition: transform var(--transition-fast);
}

/* ===================================================================
   单篇文章排版 (Article Reader Prose)
   =================================================================== */
.article-reader-container {
  max-width: 860px;
  margin: 0 auto;
  padding: 40px 20px 90px 20px;
}

.article-header-box {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 28px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.article-meta-badge {
  background: rgba(255, 122, 0, 0.12);
  color: var(--carrot-bright);
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  font-weight: 700;
}

.article-title-main {
  font-size: 2.35rem;
  font-weight: 900;
  line-height: 1.3;
  color: #FFFFFF;
  margin-bottom: 20px;
  letter-spacing: -0.01em;
}

.article-intro-box {
  background: rgba(14, 165, 233, 0.08);
  border-left: 4px solid var(--sky-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 18px 22px;
  font-size: 1.05rem;
  color: #E2E8F0;
  line-height: 1.75;
  margin-bottom: 35px;
}

.article-content {
  color: #E2E8F0;
  font-size: 1.04rem;
  line-height: 1.85;
}

.article-content h2 {
  font-size: 1.65rem;
  font-weight: 800;
  color: #FFFFFF;
  margin: 44px 0 20px 0;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 122, 0, 0.25);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-content h3 {
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--carrot-bright);
  margin: 30px 0 14px 0;
}

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

.article-content strong {
  color: #FFFFFF;
  font-weight: 700;
}

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

.article-content li {
  margin-bottom: 10px;
}

.article-content a {
  color: var(--sky-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-content a:hover {
  color: var(--carrot-primary);
}

.article-callout {
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid rgba(255, 122, 0, 0.3);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin: 30px 0;
}

.article-callout-title {
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--carrot-primary);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* 表格对比 (Comparison Table) */
.article-table-wrapper {
  overflow-x: auto;
  margin: 30px 0;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

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

.article-table th {
  background: rgba(30, 41, 59, 0.95);
  color: #FFFFFF;
  padding: 14px 18px;
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.article-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-muted);
}

.article-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* 文章末尾专属转化横幅 (Article In-content CTA) */
.article-cta-box {
  background: linear-gradient(135deg, rgba(234, 88, 12, 0.22) 0%, rgba(14, 165, 233, 0.2) 100%);
  border: 2px solid rgba(255, 122, 0, 0.4);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  text-align: center;
  margin: 50px 0;
}

.article-cta-box h3 {
  font-size: 1.6rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.article-cta-box p {
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 24px auto;
  line-height: 1.65;
}

/* 目录导读框 (Table of Contents) */
.article-toc {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid rgba(255, 122, 0, 0.28);
  border-radius: var(--radius-md);
  padding: 22px 26px;
  margin: 28px 0 36px 0;
}

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

.article-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 20px;
}

.article-toc-list li a {
  color: #CBD5E1;
  text-decoration: none;
  font-size: 0.95rem;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.article-toc-list li a:hover {
  color: var(--carrot-bright);
  transform: translateX(3px);
}

/* 博客内嵌 FAQ 卡片 (Article FAQ Section) */
.article-faq-box {
  background: rgba(17, 24, 39, 0.65);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px;
  margin: 40px 0;
}

.article-faq-item {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding: 18px 0;
}

.article-faq-item:first-child {
  padding-top: 0;
}

.article-faq-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.article-faq-q {
  font-size: 1.1rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 8px;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.article-faq-q::before {
  content: "Q:";
  font-size: 1.1rem;
  font-weight: 900;
  color: var(--carrot-primary);
}

.article-faq-a {
  font-size: 0.98rem;
  color: var(--text-muted);
  line-height: 1.7;
  padding-left: 26px;
  margin-bottom: 0;
}

@media (max-width: 1024px) {
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .articles-grid {
    grid-template-columns: 1fr;
  }
  .article-title-main {
    font-size: 1.85rem;
  }
  .article-toc-list {
    grid-template-columns: 1fr;
  }
}