/* =============================================
   高清3D动漫 - 游戏解说视频社区 - 主样式
   官网：com4og.cn
   ============================================= */

/* ===== CSS变量 ===== */
:root {
  --bg-primary: #0a0812;
  --bg-secondary: #100d1e;
  --bg-card: #15112a;
  --bg-card-hover: #1e1840;
  --primary: #9d4edd;
  --primary-light: #c77dff;
  --primary-dark: #7b2fbe;
  --accent: #00e5ff;
  --accent2: #e040fb;
  --gold: #ffd700;
  --white: #ffffff;
  --text-main: #e8e0f5;
  --text-muted: #8a7faa;
  --text-dim: #5a5070;
  --border: rgba(157,78,221,0.25);
  --border-light: rgba(157,78,221,0.12);
  --gradient-main: linear-gradient(135deg, #9d4edd 0%, #00e5ff 100%);
  --gradient-hero: linear-gradient(135deg, #0a0812 0%, #1a0533 50%, #0d1a33 100%);
  --gradient-card: linear-gradient(180deg, rgba(157,78,221,0.08) 0%, rgba(0,229,255,0.04) 100%);
  --shadow-glow: 0 0 20px rgba(157,78,221,0.3);
  --shadow-card: 0 4px 24px rgba(0,0,0,0.4);
  --radius: 12px;
  --radius-lg: 20px;
  --radius-sm: 8px;
  --transition: all 0.3s cubic-bezier(0.4,0,0.2,1);
}

/* ===== 重置 ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
  background: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ===== 滚动条 ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--primary-dark); border-radius: 3px; }

/* ===== 通用工具类 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-alt { padding: 72px 0; background: var(--bg-secondary); }
.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}
.section-title span {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 48px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.badge-primary { background: rgba(157,78,221,0.2); color: var(--primary-light); border: 1px solid rgba(157,78,221,0.3); }
.badge-accent { background: rgba(0,229,255,0.15); color: var(--accent); border: 1px solid rgba(0,229,255,0.25); }
.badge-gold { background: rgba(255,215,0,0.15); color: var(--gold); border: 1px solid rgba(255,215,0,0.25); }
.badge-pink { background: rgba(224,64,251,0.15); color: var(--accent2); border: 1px solid rgba(224,64,251,0.25); }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary {
  background: var(--gradient-main);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(157,78,221,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(157,78,221,0.5); }
.btn-outline {
  background: transparent;
  color: var(--primary-light);
  border: 1.5px solid var(--primary);
}
.btn-outline:hover { background: rgba(157,78,221,0.1); transform: translateY(-2px); }
.btn-ghost {
  background: rgba(255,255,255,0.06);
  color: var(--text-main);
  border: 1px solid var(--border);
}
.btn-ghost:hover { background: rgba(255,255,255,0.1); }
.btn-sm { padding: 8px 18px; font-size: 0.85rem; }

/* ===== 顶部公告栏 ===== */
.top-notice {
  background: linear-gradient(90deg, var(--primary-dark), #1a0533, var(--primary-dark));
  background-size: 200% 100%;
  animation: noticeSlide 4s linear infinite;
  padding: 8px 0;
  font-size: 0.82rem;
  color: var(--primary-light);
  text-align: center;
  overflow: hidden;
}
@keyframes noticeSlide { 0%{background-position:0% 50%} 100%{background-position:200% 50%} }
.top-notice a { color: var(--accent); font-weight: 600; margin: 0 8px; }
.top-notice a:hover { text-decoration: underline; }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10,8,18,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  padding: 0;
}
.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}
.navbar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-logo img {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: cover;
}
.navbar-logo .brand-text {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.navbar-nav a {
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
  white-space: nowrap;
}
.navbar-nav a:hover, .navbar-nav a.active {
  color: var(--white);
  background: rgba(157,78,221,0.12);
}
.navbar-nav a.active { color: var(--primary-light); }
.navbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-toggle {
  display: none;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(157,78,221,0.1);
  color: var(--white);
  font-size: 1.2rem;
}

/* ===== 搜索栏 ===== */
.search-bar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
  padding: 10px 0;
}
.search-inner {
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-wrap {
  flex: 1;
  max-width: 560px;
  position: relative;
}
.search-wrap input {
  width: 100%;
  padding: 10px 44px 10px 16px;
  background: rgba(255,255,255,0.05);
  border: 1.5px solid var(--border);
  border-radius: 24px;
  color: var(--text-main);
  font-size: 0.9rem;
  font-family: inherit;
  outline: none;
  transition: var(--transition);
}
.search-wrap input::placeholder { color: var(--text-dim); }
.search-wrap input:focus { border-color: var(--primary); background: rgba(157,78,221,0.06); }
.search-icon {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  font-size: 1rem;
  cursor: pointer;
  transition: var(--transition);
}
.search-icon:hover { color: var(--primary-light); }
.search-tags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tag {
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.78rem;
  background: rgba(157,78,221,0.1);
  color: var(--text-muted);
  border: 1px solid var(--border-light);
  cursor: pointer;
  transition: var(--transition);
}
.search-tag:hover { background: rgba(157,78,221,0.2); color: var(--primary-light); }

/* ===== 英雄区 ===== */
.hero {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/hero_banner.jpg');
  background-size: cover;
  background-position: center;
  filter: brightness(0.35) saturate(1.2);
  transform: scale(1.05);
  transition: transform 8s ease;
}
.hero:hover .hero-bg { transform: scale(1.0); }
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,8,18,0.85) 0%, rgba(26,5,51,0.6) 50%, rgba(13,26,51,0.7) 100%);
}
.hero-particles {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}
.hero-particles span {
  position: absolute;
  width: 2px;
  height: 2px;
  background: var(--primary-light);
  border-radius: 50%;
  animation: float-particle 6s infinite;
  opacity: 0.6;
}
@keyframes float-particle {
  0%,100% { transform: translateY(0) scale(1); opacity: 0.6; }
  50% { transform: translateY(-30px) scale(1.5); opacity: 1; }
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(157,78,221,0.15);
  border: 1px solid rgba(157,78,221,0.3);
  border-radius: 20px;
  font-size: 0.82rem;
  color: var(--primary-light);
  font-weight: 600;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}
.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 900;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.03em;
}
.hero-title .highlight {
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.8;
  max-width: 560px;
}
.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-stats {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
}
.hero-stat {}
.hero-stat .num {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1;
}
.hero-stat .num span { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-stat .label { font-size: 0.8rem; color: var(--text-muted); margin-top: 4px; }

/* ===== 滚动通知 ===== */
.ticker-wrap {
  background: rgba(157,78,221,0.08);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
  padding: 10px 0;
  overflow: hidden;
}
.ticker-inner {
  display: flex;
  gap: 48px;
  animation: ticker 30s linear infinite;
  white-space: nowrap;
}
.ticker-item {
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-shrink: 0;
}
.ticker-item strong { color: var(--primary-light); }
@keyframes ticker { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--bg-secondary);
}
.video-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.video-card:hover .video-thumb img { transform: scale(1.05); }
.video-play-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.video-card:hover .video-play-overlay { opacity: 1; }
.play-btn-circle {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(157,78,221,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 24px rgba(157,78,221,0.6);
  transition: var(--transition);
}
.play-btn-circle:hover { transform: scale(1.1); background: var(--primary); }
.play-btn-circle svg { width: 22px; height: 22px; fill: white; margin-left: 3px; }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: white;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 4px;
  backdrop-filter: blur(4px);
}
.video-cat-badge {
  position: absolute;
  top: 8px;
  left: 8px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--text-dim);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ===== 功能模块卡片 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-main);
  opacity: 0;
  transition: var(--transition);
}
.feature-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.feature-card:hover::before { opacity: 1; }
.feature-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: block;
}
.feature-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}
.feature-desc {
  font-size: 0.87rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  text-align: center;
}
.expert-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.expert-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  margin: 0 auto 16px;
  box-shadow: 0 0 20px rgba(157,78,221,0.4);
}
.expert-name { font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.expert-role { font-size: 0.82rem; color: var(--primary-light); margin-bottom: 12px; font-weight: 600; }
.expert-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.expert-tags { display: flex; gap: 6px; flex-wrap: wrap; justify-content: center; margin-bottom: 16px; }
.expert-tag { padding: 3px 10px; border-radius: 12px; font-size: 0.75rem; background: rgba(157,78,221,0.12); color: var(--text-muted); border: 1px solid var(--border-light); }
.expert-btns { display: flex; gap: 8px; justify-content: center; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  margin-bottom: 12px;
  overflow: hidden;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary); }
.faq-item.open { border-color: var(--primary); }
.faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  cursor: pointer;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  gap: 12px;
}
.faq-q:hover { color: var(--white); }
.faq-arrow {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(157,78,221,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 0.7rem;
  color: var(--primary-light);
  transition: var(--transition);
}
.faq-item.open .faq-arrow { transform: rotate(180deg); background: var(--primary); color: white; }
.faq-a {
  display: none;
  padding: 0 22px 18px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
  border-top: 1px solid var(--border-light);
  padding-top: 14px;
}
.faq-item.open .faq-a { display: block; }

/* ===== 评论 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.review-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 700;
  color: white;
  flex-shrink: 0;
}
.review-name { font-size: 0.92rem; font-weight: 700; color: var(--white); }
.review-date { font-size: 0.75rem; color: var(--text-dim); margin-top: 2px; }
.review-stars { color: var(--gold); font-size: 0.9rem; margin-bottom: 10px; letter-spacing: 2px; }
.review-text { font-size: 0.87rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 12px; }
.review-game { font-size: 0.75rem; color: var(--primary-light); background: rgba(157,78,221,0.1); padding: 3px 10px; border-radius: 10px; display: inline-block; }

/* ===== 联系区 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 20px;
  border: 1px solid var(--border-light);
  text-align: center;
  transition: var(--transition);
}
.contact-card:hover { border-color: var(--primary); transform: translateY(-3px); }
.contact-icon { font-size: 1.8rem; margin-bottom: 10px; }
.contact-label { font-size: 0.75rem; color: var(--text-dim); margin-bottom: 6px; text-transform: uppercase; letter-spacing: 0.05em; }
.contact-value { font-size: 0.88rem; color: var(--text-main); font-weight: 600; word-break: break-all; }
.contact-value a { color: var(--accent); }
.contact-value a:hover { text-decoration: underline; }

/* ===== 合作品牌墙 ===== */
.partners-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}
.partner-item {
  padding: 10px 20px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  font-size: 0.88rem;
  color: var(--text-muted);
  transition: var(--transition);
}
.partner-item:hover { border-color: var(--primary); color: var(--primary-light); }

/* ===== 分享按钮 ===== */
.share-btns { display: flex; gap: 10px; flex-wrap: wrap; }
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
  transition: var(--transition);
  border: 1px solid var(--border);
  color: var(--text-muted);
  background: var(--bg-card);
}
.share-btn:hover { transform: translateY(-2px); }
.share-btn.wechat:hover { border-color: #07c160; color: #07c160; }
.share-btn.weibo:hover { border-color: #e6162d; color: #e6162d; }
.share-btn.douyin:hover { border-color: #fe2c55; color: #fe2c55; }
.share-btn.bilibili:hover { border-color: #00a1d6; color: #00a1d6; }

/* ===== 二维码 ===== */
.qrcode-wrap { display: flex; gap: 20px; flex-wrap: wrap; }
.qrcode-item { text-align: center; }
.qrcode-box {
  width: 100px;
  height: 100px;
  background: white;
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qrcode-label { font-size: 0.75rem; color: var(--text-dim); }

/* ===== 页脚 ===== */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: 56px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand .brand-text {
  font-size: 1.3rem;
  font-weight: 800;
  background: var(--gradient-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
  display: block;
}
.footer-brand p { font-size: 0.87rem; color: var(--text-muted); line-height: 1.8; margin-bottom: 8px; }
.footer-col h4 { font-size: 0.92rem; font-weight: 700; color: var(--white); margin-bottom: 16px; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col ul li a { font-size: 0.85rem; color: var(--text-muted); transition: var(--transition); }
.footer-col ul li a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.82rem;
  color: var(--text-dim);
}
.footer-bottom a { color: var(--text-dim); }
.footer-bottom a:hover { color: var(--primary-light); }

/* ===== 直播标识 ===== */
.live-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ff4444;
  animation: pulse-dot 1.5s infinite;
  margin-right: 5px;
}
@keyframes pulse-dot { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.5;transform:scale(1.3)} }
.live-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  background: rgba(255,68,68,0.15);
  border: 1px solid rgba(255,68,68,0.3);
  border-radius: 12px;
  font-size: 0.75rem;
  color: #ff6666;
  font-weight: 600;
}

/* ===== 页面Banner ===== */
.page-banner {
  padding: 48px 0 36px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(157,78,221,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: var(--text-dim); margin-bottom: 12px; }
.breadcrumb a { color: var(--text-dim); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb span { color: var(--text-dim); }
.page-banner h1 { font-size: 2rem; font-weight: 800; color: var(--white); margin-bottom: 8px; }
.page-banner p { color: var(--text-muted); font-size: 0.95rem; }

/* ===== 淡入动画 ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== 滚动进度条 ===== */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  background: var(--gradient-main);
  z-index: 9999;
  width: 0%;
  transition: width 0.1s linear;
}

/* ===== 回到顶部 ===== */
.back-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-main);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: 0 4px 16px rgba(157,78,221,0.4);
}
.back-top.show { opacity: 1; transform: translateY(0); }
.back-top:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(157,78,221,0.5); }

/* ===== 分类标签 ===== */
.cat-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: 32px;
}
.cat-tab {
  padding: 8px 20px;
  border-radius: 24px;
  font-size: 0.87rem;
  font-weight: 600;
  cursor: pointer;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  background: transparent;
  transition: var(--transition);
}
.cat-tab:hover, .cat-tab.active {
  background: var(--gradient-main);
  border-color: transparent;
  color: white;
}

/* ===== AI区块 ===== */
.ai-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.ai-split img {
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-glow);
}
.ai-features { display: flex; flex-direction: column; gap: 16px; margin: 24px 0; }
.ai-feature {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}
.ai-feature:hover { border-color: var(--primary); }
.ai-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(157,78,221,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  flex-shrink: 0;
}
.ai-feature-text h4 { font-size: 0.92rem; font-weight: 700; color: var(--white); margin-bottom: 4px; }
.ai-feature-text p { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; }

/* ===== 社区卡片 ===== */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}
.community-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  border: 1px solid var(--border-light);
  text-align: center;
  transition: var(--transition);
}
.community-card:hover { border-color: var(--primary); transform: translateY(-4px); box-shadow: var(--shadow-glow); }
.community-mascot { font-size: 3rem; margin-bottom: 12px; display: block; }
.community-name { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 6px; }
.community-desc { font-size: 0.82rem; color: var(--text-muted); line-height: 1.6; margin-bottom: 12px; }
.community-count { font-size: 0.78rem; color: var(--primary-light); font-weight: 600; }

/* ===== 加入指南步骤 ===== */
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.step-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 24px;
  border: 1px solid var(--border-light);
  text-align: center;
  position: relative;
  transition: var(--transition);
}
.step-card:hover { border-color: var(--primary); transform: translateY(-4px); }
.step-num {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-main);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  color: white;
  margin: 0 auto 16px;
  box-shadow: 0 0 16px rgba(157,78,221,0.4);
}
.step-title { font-size: 1rem; font-weight: 700; color: var(--white); margin-bottom: 10px; }
.step-desc { font-size: 0.85rem; color: var(--text-muted); line-height: 1.7; }

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ai-split { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .navbar-nav { display: none; }
  .navbar-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(10,8,18,0.98);
    backdrop-filter: blur(20px);
    padding: 16px;
    border-bottom: 1px solid var(--border-light);
    z-index: 999;
  }
  .navbar-toggle { display: flex; }
  .hero { min-height: 480px; }
  .hero-title { font-size: 2rem; }
  .hero-stats { gap: 20px; }
  .section { padding: 48px 0; }
  .section-alt { padding: 48px 0; }
  .section-title { font-size: 1.6rem; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .steps-grid { grid-template-columns: 1fr; }
  .search-tags { display: none; }
  .video-grid { grid-template-columns: 1fr 1fr; }
  .expert-grid { grid-template-columns: 1fr 1fr; }
  .review-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr; }
  .expert-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
  .hero-btns .btn { width: 100%; justify-content: center; }
  .feature-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr 1fr; }
}