/* 闪跃 (shanyue) - 极速代理/网络加速器样式表 */
:root {
  --bg-primary: #080c14;
  --bg-secondary: #0f172a;
  --bg-card: rgba(30, 41, 59, 0.7);
  --bg-card-hover: rgba(51, 65, 85, 0.8);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-accent: rgba(59, 130, 246, 0.5);
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-highlight: #38bdf8;
  
  --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --accent-gradient: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
  --gold-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  
  --shadow-glow: 0 0 25px rgba(59, 130, 246, 0.3);
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  
  --container-width: 1200px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
}

body {
  line-height: 1.6;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

/* 容器布局 */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 渐变高亮文字 */
.text-gradient {
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--text-highlight);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 18px 40px;
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

/* 导航栏 */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 12, 20, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 18px 0;
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  background: var(--primary-gradient);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 12px rgba(59, 130, 246, 0.5);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text-main);
}

/* Hero 主视觉区 */
.hero-section {
  padding: 120px 0 90px;
  text-align: center;
  position: relative;
  background: linear-gradient(180deg, rgba(8, 12, 20, 0.4) 0%, rgba(8, 12, 20, 0.92) 85%, var(--bg-primary) 100%), url('storm_bg.jpg') no-repeat center top / cover;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 30%, rgba(59, 130, 246, 0.25) 0%, rgba(8, 12, 20, 0) 70%);
  pointer-events: none;
}

.tag-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: var(--text-highlight);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--text-muted);
  max-width: 760px;
  margin: 0 auto 40px;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 60px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 30px;
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-item h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
}

.stat-item p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* 板块通告 */
.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 60px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* 核心优势网格 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 32px 24px;
  border-radius: var(--radius-md);
  transition: all 0.3s;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.feature-icon {
  width: 54px;
  height: 54px;
  background: rgba(59, 130, 246, 0.1);
  color: var(--text-highlight);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 流媒体与 AI 支持 */
.support-section {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.support-card h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.support-card p {
  color: var(--text-muted);
  margin-bottom: 24px;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-item {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-main);
}

/* 价格套餐表 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: stretch;
}

.price-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s;
}

.price-card.popular {
  border-color: #3b82f6;
  background: rgba(30, 41, 59, 0.9);
  box-shadow: var(--shadow-glow);
  transform: scale(1.03);
}

.popular-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #fff;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.price-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.price-desc {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 24px;
}

.price-amount {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.price-amount span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
}

.price-features {
  list-style: none;
  margin-bottom: 36px;
  flex-grow: 1;
}

.price-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  margin-bottom: 14px;
  font-size: 0.95rem;
}

.price-features svg {
  color: #10b981;
  flex-shrink: 0;
}

/* 用户评价 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 28px;
  border-radius: var(--radius-md);
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--border-accent);
  box-shadow: 0 0 10px rgba(59, 130, 246, 0.4);
  flex-shrink: 0;
}

.user-info h4 {
  font-size: 1rem;
  font-weight: 600;
}

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

.stars {
  color: #f59e0b;
  margin-bottom: 12px;
}

.review-text {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
}

/* FAQ 问答 (纯 HTML details/summary 无 JS) */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.3s;
}

.faq-item[open] {
  border-color: var(--border-accent);
}

.faq-item summary {
  padding: 20px 24px;
  font-weight: 600;
  font-size: 1.1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-item summary::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: '−';
  color: var(--text-highlight);
}

.faq-answer {
  padding: 0 24px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 16px;
}

/* 页脚 (只保留 4 个标题链接，新标签页打开) */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  background: var(--bg-primary);
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 40px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: 1rem;
  font-weight: 600;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--text-highlight);
}

.copyright {
  color: rgba(148, 163, 184, 0.5);
  font-size: 0.85rem;
}

/* 子页面专属样式 (about, terms, privacy, sitemap) */
.page-content {
  padding: 60px 0 100px;
  max-width: 900px;
  margin: 0 auto;
}

.page-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
}

.page-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-body {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.page-body h2 {
  font-size: 1.5rem;
  color: var(--text-main);
  margin: 32px 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-body h2:first-child {
  margin-top: 0;
}

.page-body p, .page-body ul {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.page-body ul {
  padding-left: 24px;
}

.page-body li {
  margin-bottom: 8px;
}

.sitemap-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  list-style: none;
  padding-left: 0 !important;
}

.sitemap-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: transform 0.2s;
}

.sitemap-card:hover {
  border-color: var(--text-highlight);
  transform: translateY(-2px);
}

.sitemap-card h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.sitemap-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* 响应式媒体查询 (移动端适配) */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 2.25rem;
  }
  .hero-subtitle {
    font-size: 1.05rem;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .support-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .price-card.popular {
    transform: none;
  }
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .nav-links {
    display: none;
  }
  .hero-cta-group {
    flex-direction: column;
    gap: 14px;
  }
  .btn-lg {
    width: 100%;
  }
  .footer-nav {
    flex-direction: column;
    gap: 20px;
  }
  .sitemap-list {
    grid-template-columns: 1fr;
  }
  .page-body {
    padding: 24px;
  }
}