/**
 * 每日看料-今日看料 | 主样式表
 * 玻璃拟态 (Glassmorphism) · 平滑过渡 · 响应式网格
 * 类名后缀 _e5n4 确保唯一性
 */

/* ═══════════════════════════════════════════
   0. CSS 变量 & 基础重置
   ═══════════════════════════════════════════ */
:root {
  --clr-primary: #6c5ce7;
  --clr-primary-light: #a29bfe;
  --clr-primary-dark: #4a3db8;
  --clr-accent: #fd79a8;
  --clr-accent-light: #fab1c8;
  --clr-bg: #0f0f1a;
  --clr-bg-card: rgba(255, 255, 255, 0.06);
  --clr-bg-glass: rgba(255, 255, 255, 0.08);
  --clr-text: #e8e8f0;
  --clr-text-muted: #9a9ab0;
  --clr-border: rgba(255, 255, 255, 0.1);
  --clr-border-hover: rgba(255, 255, 255, 0.2);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-hover: 0 12px 48px rgba(108, 92, 231, 0.25);
  --glass-blur: blur(20px);
  --glass-blur-heavy: blur(40px);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
  --max-width: 1280px;
  --header-h: 72px;
}

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

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
  min-height: 100vh;
}

/* 全局背景装饰 */
body::before {
  content: "";
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(108, 92, 231, 0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(253, 121, 168, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(0, 206, 209, 0.06) 0%, transparent 50%);
  z-index: -1;
  animation: bgShift_e5n4 20s ease-in-out infinite alternate;
}

@keyframes bgShift_e5n4 {
  0%   { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-2%, -1%) rotate(2deg); }
}

a {
  color: var(--clr-primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--clr-accent); }

img {
  max-width: 100%;
  height: auto;
  display: block;
}

ul, ol { list-style: none; }

/* ═══════════════════════════════════════════
   1. 容器
   ═══════════════════════════════════════════ */
.container_e5n4 {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ═══════════════════════════════════════════
   2. HEADER
   ═══════════════════════════════════════════ */
.site-hdr_e5n4 {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-h);
  z-index: 1000;
  background: var(--clr-bg-glass);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--clr-border);
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

.site-hdr_e5n4.scrolled_e5n4 {
  background: rgba(15, 15, 26, 0.92);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
}

.hdr-inner_e5n4 {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 20px;
}

/* Logo */
.logo-wrap_e5n4 {
  flex-shrink: 0;
  font-size: 1rem;
  font-weight: 700;
}
.logo-wrap_e5n4 a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--clr-text);
}
.logo-wrap_e5n4 a:hover { color: var(--clr-primary-light); }
.logo-img_e5n4 {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--clr-primary);
  box-shadow: 0 0 16px rgba(108, 92, 231, 0.4);
}
.logo-text_e5n4 {
  font-size: 1.15rem;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 搜索框 */
.search-box_e5n4 {
  flex: 1;
  max-width: 420px;
  margin: 0 auto;
}
.search-box_e5n4 form {
  display: flex;
  align-items: center;
  background: var(--clr-bg-glass);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.search-box_e5n4 form:focus-within {
  border-color: var(--clr-primary);
  box-shadow: 0 0 20px rgba(108, 92, 231, 0.2);
}
.search-input_e5n4 {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  padding: 10px 18px;
  color: var(--clr-text);
  font-size: 0.9rem;
}
.search-input_e5n4::placeholder { color: var(--clr-text-muted); }
.search-btn_e5n4 {
  background: transparent;
  border: none;
  padding: 10px 16px;
  color: var(--clr-text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
  display: flex;
  align-items: center;
}
.search-btn_e5n4:hover { color: var(--clr-primary-light); }

/* 导航 */
.main-nav_e5n4 ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link_e5n4 {
  display: block;
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.nav-link_e5n4:hover,
.nav-link_e5n4.active_e5n4 {
  color: #fff;
  background: rgba(108, 92, 231, 0.2);
}
.nav-link_e5n4.active_e5n4 {
  background: var(--clr-primary);
  color: #fff;
}

/* 汉堡按钮 */
.nav-toggle_e5n4 {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
}
.nav-toggle_e5n4 span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition-smooth);
}
.nav-toggle_e5n4.open_e5n4 span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle_e5n4.open_e5n4 span:nth-child(2) { opacity: 0; }
.nav-toggle_e5n4.open_e5n4 span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* 全屏模糊遮罩 */
.nav-overlay_e5n4 {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15, 15, 26, 0.85);
  backdrop-filter: var(--glass-blur-heavy);
  -webkit-backdrop-filter: var(--glass-blur-heavy);
  z-index: 999;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.nav-overlay_e5n4.show_e5n4 {
  display: block;
  opacity: 1;
}

/* ═══════════════════════════════════════════
   3. 面包屑
   ═══════════════════════════════════════════ */
.breadcrumb_e5n4 {
  margin-top: var(--header-h);
  padding: 16px 0 0;
}
.breadcrumb_e5n4 ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
}
.breadcrumb_e5n4 li + li::before {
  content: "›";
  margin-right: 8px;
  color: var(--clr-text-muted);
}
.breadcrumb_e5n4 a { color: var(--clr-text-muted); }
.breadcrumb_e5n4 a:hover { color: var(--clr-primary-light); }

/* ═══════════════════════════════════════════
   4. MAIN CONTENT
   ═══════════════════════════════════════════ */
.main-content_e5n4 {
  min-height: calc(100vh - var(--header-h) - 200px);
  padding-bottom: 60px;
}

/* 通用 Section */
.section_e5n4 {
  padding: 48px 0;
}
.sec-title_e5n4 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.sec-icon_e5n4 {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  font-size: 0.9rem;
  color: #fff;
}
.sec-desc_e5n4 {
  color: var(--clr-text-muted);
  margin-bottom: 32px;
  font-size: 0.95rem;
}
.sec-more_e5n4 {
  text-align: center;
  margin-top: 36px;
}
.btn-more_e5n4 {
  display: inline-block;
  padding: 12px 36px;
  border-radius: 100px;
  background: var(--clr-bg-glass);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  font-size: 0.95rem;
  transition: all var(--transition-smooth);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.btn-more_e5n4:hover {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: #fff;
  box-shadow: var(--shadow-hover);
  transform: translateY(-2px);
}

/* ═══════════════════════════════════════════
   5. HERO
   ═══════════════════════════════════════════ */
.hero-section_e5n4 {
  position: relative;
  height: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 20px;
}
.hero-bg_e5n4 {
  position: absolute;
  inset: 0;
}
.hero-bg-img_e5n4 {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay_e5n4 {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg,
    rgba(15, 15, 26, 0.8) 0%,
    rgba(108, 92, 231, 0.3) 50%,
    rgba(253, 121, 168, 0.2) 100%);
}
.hero-content_e5n4 {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  padding: 24px;
}
.hero-title_e5n4 {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #fff 0%, var(--clr-primary-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fadeUp_e5n4 0.8s ease-out;
}
.hero-sub_e5n4 {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 28px;
  animation: fadeUp_e5n4 0.8s ease-out 0.15s both;
}
.hero-cta_e5n4 {
  display: inline-block;
  padding: 14px 40px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
  animation: fadeUp_e5n4 0.8s ease-out 0.3s both;
}
.hero-cta_e5n4:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 36px rgba(108, 92, 231, 0.5);
  color: #fff;
}

@keyframes fadeUp_e5n4 {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════
   6. 视频卡片流
   ═══════════════════════════════════════════ */
.video-grid_e5n4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.video-card_e5n4 {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-smooth);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  animation: cardIn_e5n4 0.6s ease-out both;
}
.video-card_e5n4:hover {
  transform: scale(1.05);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-hover);
}

@keyframes cardIn_e5n4 {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 缩略图 */
.vc-thumb_e5n4 {
  position: relative;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.vc-img_e5n4 {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}
.video-card_e5n4:hover .vc-img_e5n4 {
  transform: scale(1.08);
}

/* 悬停遮罩 */
.vc-overlay_e5n4 {
  position: absolute;
  inset: 0;
  background: rgba(15, 15, 26, 0.55);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}
.video-card_e5n4:hover .vc-overlay_e5n4 { opacity: 1; }

.vc-play_e5n4 {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(108, 92, 231, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-bounce);
}
.video-card_e5n4:hover .vc-play_e5n4 {
  transform: scale(1.1);
}
.vc-play_e5n4 svg { margin-left: 3px; }

.vc-watch_e5n4 {
  font-size: 0.85rem;
  color: #fff;
  font-weight: 600;
  letter-spacing: 1px;
}

/* 标签 & 时长 */
.vc-tag_e5n4 {
  position: absolute;
  top: 10px;
  left: 10px;
  padding: 3px 10px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  z-index: 2;
}
.vc-duration_e5n4 {
  position: absolute;
  bottom: 8px;
  right: 8px;
  padding: 2px 8px;
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.7);
  color: #fff;
  font-size: 0.75rem;
  z-index: 2;
}

/* 信息区 */
.vc-info_e5n4 { padding: 14px 16px; }
.vc-title_e5n4 {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.vc-stats_e5n4 {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}
.vc-stat_e5n4 {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}
.vc-stat_e5n4 svg { opacity: 0.7; }

/* ═══════════════════════════════════════════
   7. 筛选栏
   ═══════════════════════════════════════════ */
.filter-bar_e5n4 {
  display: flex;
  gap: 10px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.filter-btn_e5n4 {
  padding: 8px 22px;
  border-radius: 100px;
  border: 1px solid var(--clr-border);
  background: var(--clr-bg-glass);
  color: var(--clr-text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.filter-btn_e5n4:hover {
  border-color: var(--clr-primary);
  color: var(--clr-primary-light);
}
.filter-btn_e5n4.active_e5n4 {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  color: #fff;
}

/* ═══════════════════════════════════════════
   8. 专家展示
   ═══════════════════════════════════════════ */
.expert-grid_e5n4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.expert-card_e5n4 {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-smooth);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  position: relative;
}
.expert-card_e5n4:hover {
  transform: translateY(-6px);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-hover);
}
.exp-avatar_e5n4 {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 14px;
  border: 3px solid var(--clr-primary);
  box-shadow: 0 0 20px rgba(108, 92, 231, 0.3);
}
.exp-avatar_e5n4 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.exp-badge_e5n4 {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  color: #fff;
  font-size: 0.72rem;
  font-weight: 600;
  margin-bottom: 10px;
}
.exp-name_e5n4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
}
.exp-title_e5n4 {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}
.exp-consult_e5n4 {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 22px;
  border-radius: 100px;
  border: 1px solid var(--clr-primary);
  color: var(--clr-primary-light);
  font-size: 0.85rem;
  transition: all var(--transition-smooth);
}
.exp-consult_e5n4:hover {
  background: var(--clr-primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(108, 92, 231, 0.4);
}
.exp-dot_e5n4 {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #00e676;
  animation: pulse_e5n4 1.5s ease-in-out infinite;
}
@keyframes pulse_e5n4 {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.5; transform: scale(0.8); }
}

/* ═══════════════════════════════════════════
   9. 社区好评
   ═══════════════════════════════════════════ */
.review-grid_e5n4 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card_e5n4 {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: all var(--transition-smooth);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.review-card_e5n4:hover {
  transform: translateY(-4px);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-card);
}
.rev-header_e5n4 {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}
.rev-avatar_e5n4 {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--clr-border);
}
.rev-nick_e5n4 {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
}
.rev-date_e5n4 {
  display: block;
  font-size: 0.78rem;
  color: var(--clr-text-muted);
}
.rev-stars_e5n4 {
  color: #ffc107;
  font-size: 0.9rem;
  margin-bottom: 10px;
  letter-spacing: 2px;
}
.rev-text_e5n4 {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* ═══════════════════════════════════════════
   10. FAQ
   ═══════════════════════════════════════════ */
.faq-list_e5n4 {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item_e5n4 {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.faq-item_e5n4[open] {
  border-color: var(--clr-primary);
}
.faq-q_e5n4 {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-fast);
  list-style: none;
}
.faq-q_e5n4::-webkit-details-marker { display: none; }
.faq-q_e5n4::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--clr-primary-light);
  transition: transform var(--transition-smooth);
  flex-shrink: 0;
  margin-left: 12px;
}
.faq-item_e5n4[open] .faq-q_e5n4::after {
  transform: rotate(45deg);
}
.faq-q_e5n4:hover {
  background: rgba(108, 92, 231, 0.06);
}
.faq-a_e5n4 {
  padding: 0 24px 18px;
  font-size: 0.9rem;
  color: var(--clr-text-muted);
  line-height: 1.8;
  animation: faqOpen_e5n4 0.3s ease-out;
}
@keyframes faqOpen_e5n4 {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════════
   11. 关于页面
   ═══════════════════════════════════════════ */
.about-content_e5n4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.about-text_e5n4 h3 {
  font-size: 1.2rem;
  margin: 24px 0 10px;
  color: var(--clr-primary-light);
}
.about-text_e5n4 h3:first-child { margin-top: 0; }
.about-text_e5n4 p {
  color: var(--clr-text-muted);
  line-height: 1.8;
  font-size: 0.95rem;
}
.about-img_e5n4 {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
}
.about-img_e5n4 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 360px;
}

/* ═══════════════════════════════════════════
   12. 联系页面
   ═══════════════════════════════════════════ */
.contact-grid_e5n4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}
.ci-item_e5n4 {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 28px;
  padding: 20px;
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  transition: all var(--transition-smooth);
}
.ci-item_e5n4:hover {
  border-color: var(--clr-border-hover);
  transform: translateX(4px);
}
.ci-icon_e5n4 {
  flex-shrink: 0;
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.ci-item_e5n4 h3 {
  font-size: 1rem;
  margin-bottom: 4px;
}
.ci-item_e5n4 p {
  font-size: 0.9rem;
  color: var(--clr-text-muted);
}

/* 表单 */
.contact-form_e5n4 {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 32px;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.contact-form_e5n4 h3 {
  font-size: 1.2rem;
  margin-bottom: 24px;
}
.cf-row_e5n4 {
  margin-bottom: 18px;
}
.cf-row_e5n4 label {
  display: block;
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  margin-bottom: 6px;
}
.cf-row_e5n4 input,
.cf-row_e5n4 textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--clr-text);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  resize: vertical;
}
.cf-row_e5n4 input:focus,
.cf-row_e5n4 textarea:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 16px rgba(108, 92, 231, 0.15);
}
.cf-submit_e5n4 {
  display: inline-block;
  padding: 12px 36px;
  border-radius: 100px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  color: #fff;
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  box-shadow: 0 4px 16px rgba(108, 92, 231, 0.3);
}
.cf-submit_e5n4:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(108, 92, 231, 0.45);
}

/* ═══════════════════════════════════════════
   13. 社区页面
   ═══════════════════════════════════════════ */
.community-grid_e5n4 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.comm-card_e5n4 {
  background: var(--clr-bg-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-smooth);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
}
.comm-card_e5n4:hover {
  transform: translateY(-4px);
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-card);
}
.comm-header_e5n4 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.comm-avatar_e5n4 {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--clr-border);
}
.comm-user_e5n4 {
  font-weight: 600;
  font-size: 0.9rem;
}
.comm-text_e5n4 {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
  margin-bottom: 14px;
}
.comm-img_e5n4 {
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 14px;
  aspect-ratio: 4 / 3;
}
.comm-img_e5n4 img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-smooth);
}
.comm-card_e5n4:hover .comm-img_e5n4 img {
  transform: scale(1.04);
}
.comm-actions_e5n4 {
  display: flex;
  gap: 18px;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}

/* ═══════════════════════════════════════════
   14. 404 页面
   ═══════════════════════════════════════════ */
.error-section_e5n4 {
  padding: 100px 0;
}
.error-content_e5n4 {
  text-align: center;
}
.error-code_e5n4 {
  font-size: 8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 16px;
}
.error-msg_e5n4 {
  font-size: 1.4rem;
  margin-bottom: 10px;
}
.error-hint_e5n4 {
  color: var(--clr-text-muted);
  margin-bottom: 32px;
}

/* ═══════════════════════════════════════════
   15. FOOTER
   ═══════════════════════════════════════════ */
.site-ftr_e5n4 {
  background: rgba(255, 255, 255, 0.03);
  border-top: 1px solid var(--clr-border);
  padding: 48px 0 0;
  margin-top: 40px;
}
.ftr-grid_e5n4 {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 36px;
}
.ftr-logo_e5n4 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--clr-primary-light), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.ftr-desc_e5n4 {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}
.site-ftr_e5n4 h3 {
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--clr-text);
}
.ftr-links_e5n4 li { margin-bottom: 8px; }
.ftr-links_e5n4 a {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  transition: color var(--transition-fast);
}
.ftr-links_e5n4 a:hover { color: var(--clr-primary-light); }
.ftr-contact_e5n4 p {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  margin-bottom: 6px;
}
.ftr-notice_e5n4 p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}
.ftr-bottom_e5n4 {
  border-top: 1px solid var(--clr-border);
  padding: 20px 0;
  text-align: center;
  font-size: 0.82rem;
  color: var(--clr-text-muted);
}
.ftr-bottom_e5n4 a {
  color: var(--clr-text-muted);
  margin: 0 4px;
}
.ftr-bottom_e5n4 a:hover { color: var(--clr-primary-light); }

/* ═══════════════════════════════════════════
   16. 回到顶部
   ═══════════════════════════════════════════ */
.back-top_e5n4 {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--clr-bg-glass);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: all var(--transition-smooth);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  z-index: 900;
}
.back-top_e5n4.show_e5n4 {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-top_e5n4:hover {
  background: var(--clr-primary);
  border-color: var(--clr-primary);
  box-shadow: 0 4px 20px rgba(108, 92, 231, 0.4);
}

/* ═══════════════════════════════════════════
   17. 响应式
   ═══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .video-grid_e5n4 { grid-template-columns: repeat(3, 1fr); }
  .expert-grid_e5n4 { grid-template-columns: repeat(2, 1fr); }
  .ftr-grid_e5n4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  :root { --header-h: 64px; }

  .nav-toggle_e5n4 { display: flex; }

  .main-nav_e5n4 {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(15, 15, 26, 0.96);
    backdrop-filter: var(--glass-blur-heavy);
    -webkit-backdrop-filter: var(--glass-blur-heavy);
    padding: calc(var(--header-h) + 20px) 24px 24px;
    transition: right var(--transition-smooth);
    z-index: 1000;
    border-left: 1px solid var(--clr-border);
  }
  .main-nav_e5n4.open_e5n4 { right: 0; }
  .main-nav_e5n4 ul {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }
  .nav-link_e5n4 {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
  }

  .search-box_e5n4 { max-width: 200px; }

  .video-grid_e5n4 { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .review-grid_e5n4 { grid-template-columns: 1fr; }
  .community-grid_e5n4 { grid-template-columns: 1fr; }
  .about-content_e5n4 { grid-template-columns: 1fr; }
  .contact-grid_e5n4 { grid-template-columns: 1fr; }
  .ftr-grid_e5n4 { grid-template-columns: 1fr; }

  .hero-section_e5n4 { height: 360px; }
  .hero-title_e5n4 { font-size: 1.6rem; }
  .hero-sub_e5n4 { font-size: 0.95rem; }
}

@media (max-width: 480px) {
  .video-grid_e5n4 { grid-template-columns: 1fr; }
  .expert-grid_e5n4 { grid-template-columns: 1fr; }

  .hero-section_e5n4 { height: 300px; border-radius: var(--radius-md); }
  .hero-title_e5n4 { font-size: 1.3rem; }

  .search-box_e5n4 { display: none; }

  .sec-title_e5n4 { font-size: 1.35rem; }
  .error-code_e5n4 { font-size: 5rem; }

  .back-top_e5n4 { bottom: 20px; right: 20px; width: 42px; height: 42px; }
}

/* ═══════════════════════════════════════════
   18. 打印样式
   ═══════════════════════════════════════════ */
@media print {
  .site-hdr_e5n4,
  .nav-overlay_e5n4,
  .back-top_e5n4,
  .search-box_e5n4 { display: none !important; }
  body { background: #fff; color: #333; }
  .main-content_e5n4 { padding-top: 0; }
}