/* ==========================================================================
   WESTDATA (西部数据) - 官方网站样式表
   视觉规范：深空暗夜紫星云质感 (Dark Cosmic Violet)
   ========================================================================== */

:root {
  --bg-main: #0b071a;
  --bg-gradient: radial-gradient(circle at 50% 18%, rgba(139, 92, 246, 0.35) 0%, rgba(99, 102, 241, 0.18) 32%, rgba(11, 7, 26, 0.98) 75%), #0b071a;
  --bg-card: rgba(25, 18, 48, 0.65);
  --bg-card-hover: rgba(38, 28, 72, 0.85);
  --border-card: rgba(167, 139, 250, 0.18);
  --border-card-hover: rgba(192, 132, 252, 0.5);
  
  --primary-purple: #9333ea;
  --primary-violet: #8b5cf6;
  --primary-indigo: #6366f1;
  --glow-color: rgba(168, 85, 247, 0.55);
  
  --text-white: #ffffff;
  --text-light: #e2e8f0;
  --text-muted: #94a3b8;
  --text-purple-tint: #c4b5fd;
  
  --accent-cyan: #38bdf8;
  --accent-pink: #f43f5e;
  --accent-green: #10b981;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-pill: 9999px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-light);
  font-size: 16px;
  line-height: 1.6;
}

body {
  min-height: 100vh;
  background: var(--bg-gradient);
  background-attachment: fixed;
  background-repeat: no-repeat;
  overflow-x: hidden;
  position: relative;
}

/* 背景动态微光微粒效果 (纯CSS原生渲染) */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  background-image: 
    radial-gradient(1.5px 1.5px at 15% 25%, rgba(255, 255, 255, 0.6) 50%, transparent),
    radial-gradient(1.5px 1.5px at 45% 15%, rgba(255, 255, 255, 0.4) 50%, transparent),
    radial-gradient(2px 2px at 75% 35%, rgba(216, 180, 254, 0.7) 50%, transparent),
    radial-gradient(1px 1px at 85% 12%, rgba(255, 255, 255, 0.5) 50%, transparent),
    radial-gradient(2px 2px at 25% 65%, rgba(192, 132, 252, 0.6) 50%, transparent),
    radial-gradient(1.5px 1.5px at 60% 75%, rgba(255, 255, 255, 0.4) 50%, transparent),
    radial-gradient(1.5px 1.5px at 88% 85%, rgba(167, 139, 250, 0.5) 50%, transparent),
    radial-gradient(1px 1px at 10% 90%, rgba(255, 255, 255, 0.5) 50%, transparent);
  background-size: 100% 100%;
  z-index: 0;
  opacity: 0.85;
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   导航头部 (Navbar)
   ========================================================================== */
.header-nav {
  position: sticky;
  top: 0;
  width: 100%;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(11, 7, 26, 0.75);
  border-bottom: 1px solid rgba(139, 92, 246, 0.12);
  transition: var(--transition);
}

.header-container {
  max-width: 1260px;
  margin: 0 auto;
  padding: 16px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 品牌 Logo 区域 (采用目标站点官方 179x40 极光光环 logo.png) */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition);
}

.brand-logo-img {
  height: 38px;
  width: auto;
  max-width: 179px;
  display: block;
  object-fit: contain;
  filter: drop-shadow(0 0 12px rgba(168, 85, 247, 0.45));
  transition: var(--transition);
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.03);
  filter: drop-shadow(0 0 20px rgba(192, 132, 252, 0.8));
}

.brand-subname {
  font-size: 0.95rem;
  font-weight: 700;
  color: #c4b5fd;
  letter-spacing: 1px;
  padding: 3px 8px;
  background: rgba(147, 51, 234, 0.2);
  border: 1px solid rgba(192, 132, 252, 0.3);
  border-radius: 6px;
  display: inline-block;
  vertical-align: middle;
}


.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: var(--text-white);
  text-transform: uppercase;
}

.brand-subname {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-purple-tint);
  letter-spacing: 1px;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--text-light);
  opacity: 0.88;
  font-weight: 500;
  transition: var(--transition);
  padding: 6px 4px;
  position: relative;
}

.nav-link:hover {
  opacity: 1;
  color: #fff;
  text-shadow: 0 0 8px rgba(192, 132, 252, 0.6);
}

/* 导航右侧按钮 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.btn-nav-login {
  color: var(--text-light);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 8px 12px;
  border-radius: var(--radius-pill);
}

.btn-nav-login:hover {
  color: #fff;
}

.btn-nav-register {
  padding: 8px 20px;
  font-size: 0.92rem;
  font-weight: 600;
  color: #fff;
  background: transparent;
  border: 1px solid rgba(167, 139, 250, 0.5);
  border-radius: var(--radius-pill);
  transition: var(--transition);
}

.btn-nav-register:hover {
  border-color: var(--primary-violet);
  background: rgba(147, 51, 234, 0.2);
  box-shadow: 0 0 14px rgba(168, 85, 247, 0.4);
  transform: translateY(-1px);
}

/* ==========================================================================
   主视觉区 (Hero Section) - 包含左侧文案与右侧动态卡片
   ========================================================================== */
.hero-section {
  padding: 72px 0 96px;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-content {
  text-align: left;
}

/* 标签胶囊 */
.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  border-radius: var(--radius-pill);
  background: rgba(147, 51, 234, 0.28);
  border: 1px solid rgba(192, 132, 252, 0.4);
  color: #f3e8ff;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  box-shadow: 0 0 18px rgba(168, 85, 247, 0.3);
  margin-bottom: 24px;
}

.hero-pill-badge .dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #a855f7;
  box-shadow: 0 0 8px #a855f7;
  animation: blinkDot 2s infinite ease-in-out;
}

@keyframes blinkDot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

/* 主标题 */
.hero-title {
  font-size: 3.4rem;
  font-weight: 850;
  line-height: 1.2;
  color: var(--text-white);
  margin-bottom: 20px;
  letter-spacing: -0.5px;
}

.hero-title .brand-highlight {
  background: linear-gradient(135deg, #ffffff 30%, #c084fc 70%, #818cf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 副标题 */
.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-purple-tint);
  font-weight: 400;
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 620px;
}

/* CTA 按钮组合 */
.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
}

/* 主要注册按钮 (纯白背景 + 紫色光晕) */
.btn-primary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 34px;
  border-radius: var(--radius-pill);
  background: #ffffff;
  color: #150936;
  font-size: 1.05rem;
  font-weight: 700;
  border: none;
  box-shadow: 0 0 30px rgba(255, 255, 255, 0.35), 0 0 60px rgba(168, 85, 247, 0.45);
  transition: var(--transition);
  cursor: pointer;
}

.btn-primary-cta:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 0 40px rgba(255, 255, 255, 0.5), 0 0 80px rgba(192, 132, 252, 0.7);
  color: #0b071a;
}

/* 2026年机场推荐 专用高能按钮 */
.btn-special-recommend {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.22) 0%, rgba(147, 51, 234, 0.38) 100%);
  border: 1px solid rgba(244, 114, 182, 0.55);
  color: #fdf2f8;
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.25);
  transition: var(--transition);
}

.btn-special-recommend:hover {
  background: linear-gradient(135deg, rgba(236, 72, 153, 0.4) 0%, rgba(147, 51, 234, 0.6) 100%);
  border-color: #f472b6;
  box-shadow: 0 0 30px rgba(236, 72, 153, 0.5);
  transform: translateY(-2px);
}

/* 查看价格按钮 (透明紫半透明药丸) */
.btn-secondary-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-pill);
  background: rgba(76, 29, 149, 0.45);
  border: 1px solid rgba(167, 139, 250, 0.35);
  color: #f3e8ff;
  font-size: 1rem;
  font-weight: 600;
  transition: var(--transition);
}

.btn-secondary-cta:hover {
  background: rgba(109, 40, 217, 0.65);
  border-color: var(--primary-violet);
  transform: translateY(-2px);
}

/* 信任指标徽章 */
.hero-trust-badges {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 12px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.88rem;
  color: var(--text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-item svg {
  color: #10b981;
}

/* 右侧动态控制台卡片 (左右分布) */
.hero-visual-card {
  position: relative;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(30, 20, 60, 0.8) 0%, rgba(15, 10, 35, 0.95) 100%);
  border: 1px solid rgba(167, 139, 250, 0.25);
  padding: 28px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5), 0 0 30px rgba(139, 92, 246, 0.2);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  animation: floatCard 6s ease-in-out infinite;
}

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

.visual-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.visual-status-pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.4);
  color: #34d399;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.visual-node-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 20px;
}

.metric-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  text-align: center;
}

.metric-value {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* 节点线路活跃列表模拟 */
.active-node-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.node-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  transition: var(--transition);
}

.node-row:hover {
  background: rgba(147, 51, 234, 0.15);
  border-color: rgba(167, 139, 250, 0.3);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #f1f5f9;
}

.node-flag {
  font-size: 1.1rem;
}

.node-ping {
  color: #34d399;
  font-weight: 600;
  font-size: 0.82rem;
}

/* ==========================================================================
   通用区块样式 (Sections)
   ========================================================================== */
section {
  padding: 80px 0;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 54px;
}

.section-tag {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #c084fc;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.35rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 16px;
  line-height: 1.3;
}

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

/* ==========================================================================
   核心优势卡片 (Core Features - 3个图文卡片)
   ========================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

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

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4), 0 0 30px rgba(168, 85, 247, 0.2);
}

.feature-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(147, 51, 234, 0.3) 0%, rgba(99, 102, 241, 0.2) 100%);
  border: 1px solid rgba(192, 132, 252, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #c084fc;
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 14px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.feature-highlight-list {
  margin-top: 18px;
  list-style: none;
  font-size: 0.88rem;
  color: var(--text-purple-tint);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-highlight-list li::before {
  content: "✓ ";
  color: #34d399;
  font-weight: bold;
}

/* ==========================================================================
   流媒体与 AI 支持图卡 (Streaming & AI Support)
   ========================================================================== */
.support-media-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.support-item-card {
  background: rgba(22, 15, 45, 0.6);
  border: 1px solid rgba(167, 139, 250, 0.15);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.support-item-card:hover {
  background: rgba(35, 24, 70, 0.8);
  border-color: rgba(192, 132, 252, 0.45);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
}

.media-logo-wrapper {
  width: 52px;
  height: 52px;
  margin: 0 auto 16px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: bold;
}

.media-logo-netflix { background: #e50914; color: #fff; }
.media-logo-youtube { background: #ff0000; color: #fff; }
.media-logo-disney  { background: #113ccf; color: #fff; }
.media-logo-chatgpt { background: #10a37f; color: #fff; }
.media-logo-claude  { background: #d97706; color: #fff; }
.media-logo-gemini  { background: #4f46e5; color: #fff; }
.media-logo-tiktok  { background: #000000; color: #fff; border: 1px solid #333; }
.media-logo-spotify { background: #1db954; color: #fff; }

.support-item-card h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 6px;
}

.support-item-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.support-status-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: #34d399;
  background: rgba(16, 185, 129, 0.12);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   套餐价格对比表 (Pricing Section)
   ========================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 36px 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45), 0 0 30px rgba(168, 85, 247, 0.25);
}

/* 热门推荐套餐 (突出显示) */
.pricing-card.popular {
  background: linear-gradient(180deg, rgba(55, 33, 99, 0.85) 0%, rgba(22, 15, 45, 0.9) 100%);
  border: 1.5px solid #a855f7;
  box-shadow: 0 10px 40px rgba(147, 51, 234, 0.35);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-card.popular:hover {
  transform: scale(1.04) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(90deg, #ec4899, #8b5cf6);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  letter-spacing: 0.8px;
  text-transform: uppercase;
  box-shadow: 0 0 15px rgba(236, 72, 153, 0.6);
}

.plan-name {
  font-size: 1.3rem;
  font-weight: 750;
  color: #ffffff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 22px;
  min-height: 42px;
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
}

.plan-currency {
  font-size: 1.25rem;
  font-weight: 700;
  color: #c084fc;
}

.plan-price {
  font-size: 2.5rem;
  font-weight: 850;
  color: #ffffff;
  line-height: 1;
}

.plan-period {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 30px;
  font-size: 0.9rem;
  color: var(--text-light);
}

.plan-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
}

.plan-features-list li svg {
  color: #10b981;
  flex-shrink: 0;
}

.btn-pricing-cta {
  display: block;
  text-align: center;
  padding: 13px 20px;
  border-radius: var(--radius-pill);
  font-weight: 700;
  font-size: 0.95rem;
  transition: var(--transition);
  text-decoration: none;
  cursor: pointer;
}

.pricing-card .btn-pricing-cta {
  background: rgba(147, 51, 234, 0.25);
  border: 1px solid rgba(167, 139, 250, 0.4);
  color: #ffffff;
}

.pricing-card .btn-pricing-cta:hover {
  background: rgba(147, 51, 234, 0.6);
  border-color: #c084fc;
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.4);
}

.pricing-card.popular .btn-pricing-cta {
  background: #ffffff;
  color: #150936;
  border: none;
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.35);
}

.pricing-card.popular .btn-pricing-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 35px rgba(255, 255, 255, 0.6);
}

/* ==========================================================================
   12篇 SEO 文章专区 (在价格板块下方，图文卡片网格)
   ========================================================================== */
.articles-section {
  padding: 70px 0 90px;
  background: rgba(13, 8, 30, 0.5);
  border-top: 1px solid rgba(139, 92, 246, 0.12);
  border-bottom: 1px solid rgba(139, 92, 246, 0.12);
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  position: relative;
}

.article-card:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-card-hover);
  transform: translateY(-5px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4), 0 0 24px rgba(168, 85, 247, 0.2);
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.8rem;
}

.article-tag {
  color: #c084fc;
  background: rgba(147, 51, 234, 0.2);
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  font-weight: 600;
}

.article-date {
  color: var(--text-muted);
}

.article-title {
  font-size: 1.15rem;
  font-weight: 750;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card:hover .article-title {
  color: #e9d5ff;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer-links {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.btn-read-article {
  font-size: 0.85rem;
  color: #c084fc;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.btn-read-article:hover {
  color: #ffffff;
}

.btn-article-aff {
  font-size: 0.82rem;
  background: rgba(147, 51, 234, 0.28);
  border: 1px solid rgba(192, 132, 252, 0.35);
  color: #f3e8ff;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  transition: var(--transition);
}

.btn-article-aff:hover {
  background: var(--primary-purple);
  color: #ffffff;
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.5);
}

/* ==========================================================================
   用户真实评价 (Testimonials)
   ========================================================================== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-lg);
  padding: 30px;
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--border-card-hover);
  transform: translateY(-4px);
}

.testimonial-stars {
  color: #fbbf24;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.testimonial-content {
  font-size: 0.95rem;
  color: var(--text-light);
  line-height: 1.65;
  margin-bottom: 20px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #a855f7, #6366f1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
  font-size: 1.1rem;
}

.author-info h5 {
  color: #ffffff;
  font-size: 0.95rem;
  font-weight: 700;
}

.author-info span {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* ==========================================================================
   常见问题解答 (FAQ)
   ========================================================================== */
.faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  transition: var(--transition);
}

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

.faq-question {
  font-size: 1.12rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.faq-answer {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   右侧章节切换悬浮控制器 (Right Navigation Arrows)
   ========================================================================== */
.section-nav-widget {
  position: fixed;
  right: 28px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 99;
}

.nav-arrow-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(30, 20, 60, 0.85);
  border: 1px solid rgba(167, 139, 250, 0.35);
  color: #c084fc;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.nav-arrow-btn:hover {
  background: var(--primary-purple);
  color: #ffffff;
  border-color: #e9d5ff;
  transform: scale(1.12);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.6);
}

.nav-arrow-btn:active {
  transform: scale(0.95);
}

/* ==========================================================================
   页脚样式 (Footer & PBN 规范要求)
   页脚只保留四个标题（打开新页面）：网站地图、关于我们、服务条款、隐私政策
   底纹居中版权与两外链 PBN (dofollow)
   ========================================================================== */
footer.site-footer {
  background: #070412;
  border-top: 1px solid rgba(139, 92, 246, 0.16);
  padding: 60px 0 40px;
  position: relative;
  z-index: 10;
}

.footer-top {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  margin-bottom: 36px;
}

.footer-brand-title {
  font-size: 1.4rem;
  font-weight: 800;
  color: #ffffff;
  margin-bottom: 8px;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  max-width: 500px;
  margin-bottom: 24px;
}

/* 页脚严格只保留的 4 个标题菜单 */
.footer-four-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-nav-item a {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-purple-tint);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.footer-nav-item a:hover {
  color: #ffffff;
  background: rgba(147, 51, 234, 0.2);
  text-shadow: 0 0 10px rgba(192, 132, 252, 0.6);
}

/* 页脚底部的 PBN 外链与版权声明区域 (符合严格指令) */
.footer-pbn-section {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 28px;
  text-align: center;
}

.footer-pbn-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.pbn-link {
  font-size: 0.92rem;
  font-weight: 600;
  color: #c084fc;
  transition: var(--transition);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.pbn-link:hover {
  color: #ffffff;
  text-shadow: 0 0 10px rgba(192, 132, 252, 0.8);
}

.footer-copyright {
  font-size: 0.84rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ==========================================================================
   移动端与响应式适配 (@media 媒体查询)
   确保在手机端完美单栏显示，按钮适合手指点击
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .support-media-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 14px 18px;
  }
  
  .nav-links {
    display: none; /* 移动端精简模式 */
  }
  
  .hero-section {
    padding: 42px 0 60px;
  }
  
  .hero-title {
    font-size: 2.3rem;
  }
  
  .hero-subtitle {
    font-size: 1.05rem;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-primary-cta,
  .btn-special-recommend,
  .btn-secondary-cta {
    width: 100%;
    padding: 15px 20px;
    font-size: 1.05rem;
  }
  
  .features-grid,
  .pricing-grid,
  .support-media-grid,
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.popular {
    transform: none;
  }
  
  .section-nav-widget {
    right: 12px;
  }
  
  .nav-arrow-btn {
    width: 38px;
    height: 38px;
  }
  
  .footer-four-nav {
    gap: 16px;
    flex-direction: column;
  }
}