/* ===================================
   探花 - 主样式文件
   dqusi.cn
   =================================== */

/* CSS变量 */
:root {
  --primary: #E8336D;
  --primary-dark: #c4205a;
  --primary-light: #FF6B9D;
  --secondary: #FF9A3C;
  --accent: #7B2FBE;
  --bg-dark: #0d0d1a;
  --bg-card: #1a1a2e;
  --bg-card2: #16213e;
  --text-main: #f0f0f0;
  --text-muted: #a0a0b8;
  --text-dark: #333;
  --border: rgba(232,51,109,0.25);
  --gradient: linear-gradient(135deg, #E8336D 0%, #FF6B9D 50%, #FF9A3C 100%);
  --gradient2: linear-gradient(135deg, #7B2FBE 0%, #E8336D 100%);
  --shadow: 0 8px 32px rgba(232,51,109,0.18);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s ease;
}

/* 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', 'Hiragino Sans GB', sans-serif;
  background: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; outline: none; }

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

/* ===== 顶部公告栏 ===== */
.top-bar {
  background: var(--gradient);
  color: #fff;
  text-align: center;
  padding: 6px 20px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1px;
}
.top-bar a { color: #fff; text-decoration: underline; margin-left: 8px; }

/* ===== 导航栏 ===== */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13,13,26,0.97);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 20px;
}
.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 20px;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.navbar-brand img.nav-logo {
  height: 40px;
  width: auto;
}
.navbar-brand .brand-text {
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}
.navbar-brand .brand-sub {
  font-size: 11px;
  color: var(--text-muted);
  display: block;
  line-height: 1;
  margin-top: 2px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
  justify-content: center;
}
.nav-menu a {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--transition);
  white-space: nowrap;
}
.nav-menu a:hover, .nav-menu a.active {
  color: #fff;
  background: rgba(232,51,109,0.15);
}
.nav-menu a.active { color: var(--primary-light); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.btn-login {
  padding: 7px 18px;
  border-radius: 8px;
  border: 1px solid var(--primary);
  color: var(--primary-light);
  font-size: 13px;
  background: transparent;
  transition: all var(--transition);
}
.btn-login:hover { background: rgba(232,51,109,0.15); }
.btn-join {
  padding: 7px 18px;
  border-radius: 8px;
  background: var(--gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-join:hover { opacity: 0.85; transform: translateY(-1px); }
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== 搜索框 ===== */
.search-bar-wrap {
  background: rgba(26,26,46,0.98);
  border-bottom: 1px solid var(--border);
  padding: 10px 20px;
}
.search-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
}
.search-form {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 6px 16px;
  flex: 1;
  max-width: 600px;
  gap: 8px;
  transition: border-color var(--transition);
}
.search-form:focus-within { border-color: var(--primary); }
.search-form input {
  background: none;
  border: none;
  outline: none;
  color: var(--text-main);
  font-size: 14px;
  flex: 1;
  min-width: 0;
}
.search-form input::placeholder { color: var(--text-muted); }
.search-form button {
  background: none;
  color: var(--primary-light);
  font-size: 16px;
  padding: 0;
  line-height: 1;
}
.search-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.search-tags span {
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 3px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.1);
  transition: all var(--transition);
}
.search-tags span:hover { border-color: var(--primary); color: var(--primary-light); }

/* ===== 通用容器 ===== */
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.section { padding: 60px 0; }
.section-sm { padding: 40px 0; }

/* ===== 区块标题 ===== */
.section-header { text-align: center; margin-bottom: 40px; }
.section-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--primary-light);
  background: rgba(232,51,109,0.1);
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
  border: 1px solid rgba(232,51,109,0.2);
}
.section-title {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 800;
  color: #fff;
  line-height: 1.3;
  margin-bottom: 12px;
}
.section-title span { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.section-desc { font-size: 15px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  min-height: 560px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--bg-dark);
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('../images/banner1.jpg');
  background-size: cover;
  background-position: center top;
  filter: brightness(0.35);
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(13,13,26,0.95) 0%, rgba(13,13,26,0.6) 60%, transparent 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1280px;
  margin: 0 auto;
  padding: 80px 20px;
  width: 100%;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(232,51,109,0.15);
  border: 1px solid rgba(232,51,109,0.3);
  color: var(--primary-light);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  margin-bottom: 20px;
  letter-spacing: 1px;
}
.hero-badge::before { content: '●'; color: var(--primary); animation: blink 1.5s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0.3} }
.hero h1 {
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 900;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 16px;
}
.hero h1 .highlight { background: var(--gradient); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.hero-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.75);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.8;
}
.hero-btns { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  background: var(--gradient);
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  border-radius: 10px;
  transition: all var(--transition);
  box-shadow: 0 4px 20px rgba(232,51,109,0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(232,51,109,0.5); }
.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  border: 1.5px solid rgba(255,255,255,0.3);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  border-radius: 10px;
  transition: all var(--transition);
}
.btn-outline:hover { border-color: var(--primary-light); color: var(--primary-light); }
.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.hero-stat .num {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat .label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

/* ===== 视频卡片 ===== */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}
.video-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  cursor: pointer;
}
.video-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: rgba(232,51,109,0.5);
}
.video-thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #111;
}
.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-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.3);
  opacity: 0;
  transition: opacity var(--transition);
}
.video-card:hover .video-play-btn { opacity: 1; }
.play-icon {
  width: 56px;
  height: 56px;
  background: rgba(232,51,109,0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
  transition: transform var(--transition);
}
.play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-top: 10px solid transparent;
  border-bottom: 10px solid transparent;
  border-left: 18px solid #fff;
  margin-left: 4px;
}
.video-card:hover .play-icon { transform: scale(1.1); }
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  font-size: 11px;
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
}
.video-tag {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  letter-spacing: 1px;
}
.video-info { padding: 14px; }
.video-title {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 8px;
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.video-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--text-muted);
}
.video-meta span { display: flex; align-items: center; gap: 4px; }
.video-author {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 10px;
}
.author-avatar {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  object-fit: cover;
  border: 1.5px solid var(--primary);
}
.author-name { font-size: 12px; color: var(--text-muted); }

/* ===== 图片卡片 ===== */
.photo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.photo-card {
  border-radius: var(--radius);
  overflow: hidden;
  position: relative;
  aspect-ratio: 3/4;
  cursor: pointer;
  border: 1px solid var(--border);
}
.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}
.photo-card:hover img { transform: scale(1.06); }
.photo-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 14px;
}
.photo-card:hover .photo-overlay { opacity: 1; }
.photo-overlay-text { color: #fff; font-size: 13px; font-weight: 600; }

/* ===== 专家卡片 ===== */
.expert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.expert-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all var(--transition);
  text-align: center;
}
.expert-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.expert-img-wrap {
  position: relative;
  height: 200px;
  overflow: hidden;
}
.expert-img-wrap img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.expert-badge {
  position: absolute;
  top: 12px;
  right: 12px;
  background: var(--gradient);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 12px;
}
.expert-body { padding: 20px 16px; }
.expert-name { font-size: 18px; font-weight: 800; color: #fff; margin-bottom: 4px; }
.expert-title { font-size: 12px; color: var(--primary-light); margin-bottom: 12px; font-weight: 600; }
.expert-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; margin-bottom: 16px; }
.expert-awards { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; margin-bottom: 16px; }
.award-tag {
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  background: rgba(232,51,109,0.1);
  border: 1px solid rgba(232,51,109,0.2);
  color: var(--primary-light);
}
.expert-btns { display: flex; gap: 8px; justify-content: center; }
.btn-sm {
  padding: 6px 14px;
  border-radius: 8px;
  font-size: 12px;
  font-weight: 600;
  transition: all var(--transition);
}
.btn-sm-primary { background: var(--gradient); color: #fff; }
.btn-sm-outline { border: 1px solid var(--primary); color: var(--primary-light); background: transparent; }
.btn-sm-outline:hover { background: rgba(232,51,109,0.1); }

/* ===== 评论卡片 ===== */
.review-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.review-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px;
  border: 1px solid var(--border);
  transition: all var(--transition);
  position: relative;
}
.review-card::before {
  content: '"';
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 60px;
  color: rgba(232,51,109,0.1);
  font-family: Georgia, serif;
  line-height: 1;
}
.review-card:hover { border-color: rgba(232,51,109,0.4); }
.review-stars { color: #FFD700; font-size: 14px; margin-bottom: 12px; letter-spacing: 2px; }
.review-text { font-size: 14px; color: var(--text-muted); line-height: 1.7; margin-bottom: 16px; }
.review-user { display: flex; align-items: center; gap: 10px; }
.review-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}
.review-name { font-size: 14px; font-weight: 600; color: #fff; }
.review-date { font-size: 11px; color: var(--text-muted); }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border);
  overflow: hidden;
}
.faq-question {
  padding: 18px 20px;
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background var(--transition);
}
.faq-question:hover { background: rgba(232,51,109,0.05); }
.faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(232,51,109,0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  font-size: 16px;
  flex-shrink: 0;
  transition: transform var(--transition);
}
.faq-item.active .faq-icon { transform: rotate(45deg); background: var(--primary); color: #fff; }
.faq-answer {
  padding: 0 20px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.active .faq-answer { max-height: 300px; padding: 0 20px 18px; }

/* ===== 合作品牌 ===== */
.partner-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  align-items: center;
}
.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 24px;
  font-size: 14px;
  font-weight: 700;
  color: var(--text-muted);
  transition: all var(--transition);
  min-width: 120px;
  text-align: center;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary-light); background: rgba(232,51,109,0.05); }

/* ===== 功能特性 ===== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 28px 20px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.feature-card:hover { transform: translateY(-4px); border-color: rgba(232,51,109,0.4); box-shadow: var(--shadow); }
.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: rgba(232,51,109,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 16px;
  border: 1px solid rgba(232,51,109,0.2);
}
.feature-title { font-size: 16px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.feature-desc { font-size: 13px; color: var(--text-muted); line-height: 1.6; }

/* ===== 联系区块 ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}
.contact-card {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  border: 1px solid var(--border);
  text-align: center;
  transition: all var(--transition);
}
.contact-card:hover { border-color: rgba(232,51,109,0.4); }
.contact-icon { font-size: 36px; margin-bottom: 12px; }
.contact-label { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.contact-value { font-size: 15px; font-weight: 700; color: #fff; }
.qr-img { width: 120px; height: 120px; object-fit: contain; margin: 12px auto 0; border-radius: 8px; border: 2px solid var(--border); }

/* ===== 社交分享 ===== */
.share-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}
.share-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.share-wx { background: rgba(9,187,7,0.15); color: #09BB07; border-color: rgba(9,187,7,0.3); }
.share-wb { background: rgba(230,22,45,0.15); color: #E6162D; border-color: rgba(230,22,45,0.3); }
.share-dy { background: rgba(0,0,0,0.3); color: #fff; border-color: rgba(255,255,255,0.2); }
.share-bili { background: rgba(0,161,214,0.15); color: #00A1D6; border-color: rgba(0,161,214,0.3); }
.share-btn:hover { transform: translateY(-2px); }

/* ===== 页脚 ===== */
.footer {
  background: #080812;
  border-top: 1px solid var(--border);
  padding: 60px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}
.footer-brand img { height: 44px; margin-bottom: 14px; }
.footer-brand-name {
  font-size: 22px;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}
.footer-desc { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 16px; }
.footer-social { display: flex; gap: 10px; }
.social-link {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: all var(--transition);
}
.social-link:hover { background: rgba(232,51,109,0.15); border-color: var(--primary); }
.footer-col h4 {
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13px; color: var(--text-muted); transition: color var(--transition); }
.footer-links a:hover { color: var(--primary-light); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-copyright { font-size: 13px; color: var(--text-muted); }
.footer-copyright a { color: var(--primary-light); }
.footer-update { font-size: 12px; color: rgba(160,160,184,0.6); }
.footer-icp { font-size: 12px; color: rgba(160,160,184,0.5); }

/* ===== 面包屑 ===== */
.breadcrumb {
  padding: 12px 0;
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.breadcrumb a { color: var(--text-muted); transition: color var(--transition); }
.breadcrumb a:hover { color: var(--primary-light); }
.breadcrumb .sep { color: rgba(255,255,255,0.2); }
.breadcrumb .current { color: var(--primary-light); }

/* ===== 内页 Banner ===== */
.page-banner {
  background: linear-gradient(135deg, #1a0a2e 0%, #0d0d1a 50%, #1a0a1a 100%);
  padding: 60px 0;
  text-align: center;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.page-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(232,51,109,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.page-banner h1 { font-size: clamp(28px, 4vw, 42px); font-weight: 900; color: #fff; margin-bottom: 12px; }
.page-banner p { font-size: 15px; color: var(--text-muted); max-width: 600px; margin: 0 auto; }

/* ===== 标签 ===== */
.tag {
  display: inline-block;
  font-size: 11px;
  padding: 3px 10px;
  border-radius: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.tag-pink { background: rgba(232,51,109,0.15); color: var(--primary-light); border: 1px solid rgba(232,51,109,0.2); }
.tag-purple { background: rgba(123,47,190,0.15); color: #b07ee8; border: 1px solid rgba(123,47,190,0.2); }
.tag-orange { background: rgba(255,154,60,0.15); color: #ffb86c; border: 1px solid rgba(255,154,60,0.2); }
.tag-blue { background: rgba(0,161,214,0.15); color: #5bc8e8; border: 1px solid rgba(0,161,214,0.2); }

/* ===== 统计数字 ===== */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
}
.stat-item {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  border: 1px solid var(--border);
}
.stat-num {
  font-size: 36px;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label { font-size: 13px; color: var(--text-muted); }

/* ===== 加入社区 ===== */
.join-section {
  background: linear-gradient(135deg, rgba(232,51,109,0.12) 0%, rgba(123,47,190,0.12) 100%);
  border: 1px solid rgba(232,51,109,0.2);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  text-align: center;
}
.join-section h2 { font-size: 28px; font-weight: 800; color: #fff; margin-bottom: 12px; }
.join-section p { font-size: 15px; color: var(--text-muted); margin-bottom: 24px; }
.join-steps {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}
.join-step {
  display: flex;
  align-items: center;
  gap: 10px;
  background: rgba(255,255,255,0.05);
  border-radius: 10px;
  padding: 12px 20px;
  font-size: 14px;
  color: var(--text-muted);
}
.step-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--gradient);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

/* ===== AI功能卡片 ===== */
.ai-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}
.ai-card {
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(123,47,190,0.1) 100%);
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid rgba(123,47,190,0.25);
  transition: all var(--transition);
}
.ai-card:hover { transform: translateY(-4px); box-shadow: 0 8px 32px rgba(123,47,190,0.2); }
.ai-icon { font-size: 36px; margin-bottom: 16px; }
.ai-title { font-size: 18px; font-weight: 700; color: #fff; margin-bottom: 8px; }
.ai-desc { font-size: 13px; color: var(--text-muted); line-height: 1.7; }

/* ===== 弹幕效果 ===== */
.danmu-wrap {
  background: var(--bg-card);
  border-radius: var(--radius);
  padding: 16px;
  overflow: hidden;
  height: 48px;
  border: 1px solid var(--border);
  position: relative;
}
.danmu-track {
  display: flex;
  gap: 40px;
  animation: danmu-scroll 30s linear infinite;
  white-space: nowrap;
}
@keyframes danmu-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
.danmu-item {
  font-size: 13px;
  color: var(--text-muted);
  padding: 4px 12px;
  background: rgba(255,255,255,0.04);
  border-radius: 12px;
  white-space: nowrap;
}
.danmu-item.hot { color: var(--primary-light); }

/* ===== 懒加载 ===== */
img[data-src] { opacity: 0; transition: opacity 0.4s ease; }
img.loaded { opacity: 1; }

/* ===== 移动端适配 ===== */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .nav-menu, .nav-actions { display: none; }
  .hamburger { display: flex; }
  .nav-menu.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(13,13,26,0.98);
    padding: 20px;
    border-bottom: 1px solid var(--border);
    z-index: 999;
    gap: 8px;
  }
  .nav-menu.open a { padding: 12px 16px; font-size: 15px; }
  .hero { min-height: 400px; }
  .hero-stats { gap: 20px; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .join-section { padding: 32px 20px; }
  .section { padding: 40px 0; }
  .search-tags { display: none; }
}
@media (max-width: 480px) {
  .video-grid { grid-template-columns: 1fr 1fr; gap: 12px; }
  .hero h1 { font-size: 26px; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-outline { width: 100%; justify-content: center; }
}