/* 高清视频 - 主样式文件 | 原创设计 © 2025 高清视频 */
:root {
  --primary: #2ecc71;
  --primary-dark: #27ae60;
  --primary-light: #a8e6cf;
  --secondary: #ff6b6b;
  --accent: #f39c12;
  --accent2: #9b59b6;
  --bg-dark: #0a1628;
  --bg-card: #12203a;
  --bg-card2: #1a2d4a;
  --text-main: #e8f4f0;
  --text-muted: #8ba4b8;
  --text-light: #ffffff;
  --border-color: #2a4060;
  --gradient-main: linear-gradient(135deg, #2ecc71 0%, #27ae60 50%, #1abc9c 100%);
  --gradient-card: linear-gradient(145deg, #12203a 0%, #1a2d4a 100%);
  --shadow-card: 0 8px 32px rgba(46, 204, 113, 0.12);
  --shadow-hover: 0 16px 48px rgba(46, 204, 113, 0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 30px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-main);
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: var(--primary-light); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary); }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }
.container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
/* 顶部公告栏 */
.top-bar {
  background: var(--gradient-main);
  color: #fff;
  text-align: center;
  padding: 8px 20px;
  font-size: 13px;
  letter-spacing: 0.5px;
}
.top-bar a { color: #fff; font-weight: 600; text-decoration: underline; }
/* 导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(10, 22, 40, 0.95);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
}
.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  height: 70px;
}
.site-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  color: var(--text-light);
}
.site-logo img { width: 40px; height: 40px; border-radius: 8px; }
.logo-text { background: var(--gradient-main); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.site-nav {
  display: flex;
  gap: 6px;
  margin-left: 40px;
  flex: 1;
}
.site-nav a {
  padding: 8px 16px;
  border-radius: var(--radius-xl);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
  transition: var(--transition);
}
.site-nav a:hover, .site-nav a.active {
  background: rgba(46, 204, 113, 0.15);
  color: var(--primary);
}
.header-actions { display: flex; gap: 10px; align-items: center; }
.btn-login {
  padding: 8px 20px;
  border: 1px solid var(--primary);
  border-radius: var(--radius-xl);
  background: transparent;
  color: var(--primary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}
.btn-login:hover { background: rgba(46, 204, 113, 0.1); }
.btn-register {
  padding: 8px 20px;
  border: none;
  border-radius: var(--radius-xl);
  background: var(--gradient-main);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
.btn-register:hover { transform: translateY(-1px); box-shadow: 0 4px 15px rgba(46, 204, 113, 0.4); }
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 8px; }
.hamburger span { width: 22px; height: 2px; background: var(--text-light); transition: var(--transition); }
/* 搜索栏 */
.search-bar-section {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}
.search-bar-inner { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.search-wrap {
  display: flex;
  max-width: 600px;
  margin: 0 auto 12px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition);
}
.search-wrap:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(46, 204, 113, 0.15); }
.search-wrap input {
  flex: 1;
  padding: 12px 20px;
  background: transparent;
  border: none;
  color: var(--text-light);
  font-size: 14px;
  outline: none;
}
.search-wrap input::placeholder { color: var(--text-muted); }
.search-btn {
  padding: 12px 20px;
  background: var(--gradient-main);
  border: none;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
  transition: var(--transition);
}
.search-btn:hover { opacity: 0.9; }
.search-tags { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.search-tags a {
  padding: 4px 14px;
  background: rgba(46, 204, 113, 0.08);
  border: 1px solid rgba(46, 204, 113, 0.2);
  border-radius: var(--radius-xl);
  font-size: 12px;
  color: var(--text-muted);
}
.search-tags a:hover { background: rgba(46, 204, 113, 0.15); color: var(--primary); }
/* Hero Banner */
.hero-banner {
  position: relative;
  height: 520px;
  overflow: hidden;
}
.hero-banner > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(10, 22, 40, 0.9) 0%, rgba(10, 22, 40, 0.4) 100%);
  display: flex;
  align-items: center;
}
.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 40px;
  width: 100%;
}
.jkhlysi {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(46, 204, 113, 0.15);
  border: 1px solid rgba(46, 204, 113, 0.3);
  border-radius: var(--radius-xl);
  font-size: 13px;
  color: var(--primary);
  margin-bottom: 20px;
}
.hero-title {
  font-size: 42px;
  font-weight: 900;
  line-height: 1.3;
  color: var(--text-light);
  margin-bottom: 16px;
  max-width: 600px;
}
.hero-desc {
  font-size: 16px;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 30px;
  max-width: 480px;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--gradient-main);
  color: #fff;
  border-radius: var(--radius-xl);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); color: #fff; }
.btn-outline {
  display: inline-block;
  padding: 14px 32px;
  border: 1px solid var(--primary);
  color: var(--primary);
  border-radius: var(--radius-xl);
  font-size: 15px;
  font-weight: 600;
  transition: var(--transition);
}
.btn-outline:hover { background: rgba(46, 204, 113, 0.1); }
.54uk3yws { display: flex; gap: 40px; margin-top: 30px; }
.54uk3yw { text-align: center; }
.54uk3yw-num { font-size: 28px; font-weight: 900; color: var(--primary); }
.54uk3yw-label { font-size: 12px; color: var(--text-muted); }
/* Section通用 */
.section { padding: 60px 0; }
.section-sm { padding: 40px 0; }
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 32px; }
.section-title { font-size: 24px; font-weight: 800; color: var(--text-light); }
.section-more { font-size: 14px; color: var(--primary); }
/* 视频卡片 */
.video-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.video-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}
.video-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); border-color: var(--primary); }
.video-thumb {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/9;
}
.video-thumb img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.video-play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: var(--transition);
  background: rgba(0,0,0,0);
}
.video-card:hover .video-play-btn { opacity: 1; background: rgba(0,0,0,0.45); }
.play-icon {
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 14px 0 14px 24px;
  border-color: transparent transparent transparent #fff;
}
.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background: rgba(0,0,0,0.75);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
}
.video-quality {
  position: absolute;
  top: 8px;
  left: 8px;
  background: var(--gradient-main);
  color: #fff;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 10px;
  font-weight: 600;
}
.video-info { padding: 16px; }
.video-title { font-size: 14px; font-weight: 700; color: var(--text-light); margin-bottom: 10px; line-height: 1.5; overflow: hidden; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.video-meta { display: flex; justify-content: space-between; align-items: center; }
.video-author { display: flex; align-items: center; gap: 8px; font-size: 12px; color: var(--text-muted); }
.video-author-avatar { width: 20px; height: 20px; border-radius: 50%; }
.video-stats { display: flex; gap: 10px; font-size: 11px; color: var(--text-muted); }
/* 社区入口 */
.dw6smsze { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.o5trrw {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 24px 16px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
}
.o5trrw:hover { border-color: var(--primary); transform: translateY(-3px); box-shadow: var(--shadow-card); }
.o5trrw-icon { font-size: 32px; margin-bottom: 12px; }
.o5trrw-title { font-size: 14px; font-weight: 700; color: var(--text-light); margin-bottom: 6px; }
.o5trrw-desc { font-size: 12px; color: var(--text-muted); }
/* AI功能 */
.yrjd7k { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.x3m25qv4 {
  padding: 30px 24px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: var(--transition);
}
.x3m25qv4:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.t2oxkt4 { font-size: 36px; margin-bottom: 16px; }
.9lmb169 { font-size: 16px; font-weight: 700; color: var(--text-light); margin-bottom: 10px; }
.7nrkfkbu { font-size: 13px; color: var(--text-muted); line-height: 1.8; }
/* 专家卡片 */
.oqrmhr8 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.30qm7w {
  padding: 30px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  transition: var(--transition);
}
.30qm7w:hover { border-color: var(--primary); box-shadow: var(--shadow-card); }
.zpu5nvq { width: 90px; height: 90px; border-radius: 50%; margin: 0 auto 16px; object-fit: cover; border: 3px solid var(--primary); }
.r0v0o9 { font-size: 18px; font-weight: 800; color: var(--text-light); margin-bottom: 6px; }
.klngi { font-size: 13px; color: var(--primary); margin-bottom: 12px; }
.h9vbro { font-size: 13px; color: var(--text-muted); line-height: 1.8; margin-bottom: 14px; }
.r95m0y8 { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; margin-bottom: 16px; }
.8ib74ezt { padding: 3px 10px; background: rgba(46, 204, 113, 0.1); border: 1px solid rgba(46, 204, 113, 0.2); border-radius: var(--radius-xl); font-size: 11px; color: var(--primary); }
.d5wi1 { display: flex; justify-content: center; gap: 10px; }
.btn-sm { padding: 6px 16px; border-radius: var(--radius-xl); font-size: 12px; font-weight: 600; transition: var(--transition); display: inline-block; }
.btn-sm-primary { background: var(--gradient-main); color: #fff; }
.btn-sm-outline { border: 1px solid var(--primary); color: var(--primary); }
/* 合作品牌 */
.y9gxep4c { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.pwjx1l {
  padding: 20px;
  background: var(--bg-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  transition: var(--transition);
  cursor: pointer;
}
.pwjx1l:hover { border-color: var(--primary); color: var(--primary); }
/* 评价 */
.uzy8h0 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.7dym9h {
  padding: 24px;
  background: var(--gradient-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}
.3w0rtc { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.61bqhd { width: 40px; height: 40px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 16px; font-weight: 700; color: #fff; }
.lh2kx8f .name { font-size: 14px; font-weight: 700; color: var(--text-light); }
.lh2kx8f .date { font-size: 11px; color: var(--text-muted); }
.k43h5 { color: #f1c40f; font-size: 14px; margin-bottom: 10px; }
.i5a3v { font-size: 13px; color: var(--text-muted); line-height: 1.8; }
/* FAQ */
.vrf5hw { max-width: 800px; margin: 0 auto; }
.pmgfad7 { border: 1px solid var(--border-color); border-radius: var(--radius-md); margin-bottom: 12px; overflow: hidden; }
.w6bpof {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 24px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-light);
  transition: var(--transition);
}
.w6bpof:hover { color: var(--primary); }
.bu8v4f0 { font-size: 20px; color: var(--primary); transition: var(--transition); }
.sztgmp { padding: 0 24px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease, padding 0.3s ease; }
.pmgfad7.active .sztgmp { max-height: 300px; padding: 0 24px 18px; }
.pmgfad7.active .bu8v4f0 { transform: rotate(45deg); }
.sztgmp span { font-size: 14px; color: var(--text-muted); line-height: 1.8; display: block; }
/* 联系 */
.dzotj { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.m5tm6by { padding: 30px; background: var(--gradient-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); }
.m5tm6by h3 { font-size: 18px; font-weight: 700; color: var(--text-light); margin-bottom: 20px; }
.kekh0 { display: flex; align-items: flex-start; gap: 14px; margin-bottom: 16px; }
.v462zsd { font-size: 20px; min-width: 30px; text-align: center; }
.ls2d5juh .label { font-size: 12px; color: var(--text-muted); margin-bottom: 2px; }
.ls2d5juh .value { font-size: 14px; color: var(--text-light); font-weight: 500; }
.qr-codes { display: flex; gap: 20px; margin-top: 20px; }
.qr-item { text-align: center; }
.qr-item img { border-radius: var(--radius-sm); margin-bottom: 6px; }
.qr-item p { font-size: 11px; color: var(--text-muted); }
/* 底部 */
.site-footer { background: var(--bg-card); border-top: 1px solid var(--border-color); padding: 50px 0 30px; }
.footer-inner { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 30px; }
.footer-col h4 { font-size: 15px; font-weight: 700; color: var(--text-light); margin-bottom: 16px; }
.footer-links { display: flex; flex-direction: column; gap: 10px; }
.footer-links a { font-size: 13px; color: var(--text-muted); }
.footer-links a:hover { color: var(--primary); }
.x9nxb62 { display: flex; gap: 12px; margin-top: 12px; }
.x9nxb62 a { width: 36px; height: 36px; display: flex; align-items: center; justify-content: center; background: var(--bg-dark); border: 1px solid var(--border-color); border-radius: 50%; font-size: 16px; transition: var(--transition); }
.x9nxb62 a:hover { border-color: var(--primary); background: rgba(46, 204, 113, 0.1); }
.d0pd3c6 { display: flex; align-items: center; gap: 30px; padding: 20px 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); margin-bottom: 20px; }
.errlqh7d { display: flex; align-items: center; gap: 12px; }
.errlqh7d img { border-radius: var(--radius-sm); }
.oazzr strong { display: block; font-size: 13px; color: var(--text-light); }
.oazzr span { font-size: 11px; color: var(--text-muted); }
.dusykp9m { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.49ei9cp { font-size: 13px; color: var(--text-muted); }
.nfsrh { padding: 6px 14px; background: var(--bg-dark); border: 1px solid var(--border-color); border-radius: var(--radius-xl); font-size: 12px; color: var(--text-muted); transition: var(--transition); }
.nfsrh:hover { border-color: var(--primary); color: var(--primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; }
.footer-copyright { font-size: 12px; color: var(--text-muted); }
.footer-copyright a { color: var(--primary); }
.footer-update { font-size: 12px; color: var(--text-muted); }
.footer-legal { display: flex; gap: 16px; }
.footer-legal a { font-size: 12px; color: var(--text-muted); }
.footer-legal a:hover { color: var(--primary); }
/* 面包屑 */
.breadcrumb { padding: 14px 20px; max-width: 1280px; margin: 0 auto; font-size: 13px; color: var(--text-muted); }
.breadcrumb a { color: var(--primary); }
.breadcrumb .sep { margin: 0 8px; }
/* 页面Banner */
.page-banner { position: relative; height: 200px; overflow: hidden; margin-bottom: 30px; }
.page-banner img { width: 100%; height: 100%; object-fit: cover; }
.page-banner-content { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; background: rgba(10, 22, 40, 0.7); }
.page-banner-content h1 { font-size: 32px; font-weight: 900; color: var(--text-light); }
/* 标签 */
.tag { display: inline-block; padding: 4px 12px; border-radius: var(--radius-xl); font-size: 11px; font-weight: 600; }
.tag-primary { background: rgba(46, 204, 113, 0.1); border: 1px solid rgba(46, 204, 113, 0.3); color: var(--primary); }
.tag-secondary { background: rgba(255, 107, 107, 0.1); border: 1px solid rgba(255, 107, 107, 0.3); color: var(--secondary); }
.tag-accent { background: rgba(155, 89, 182, 0.1); border: 1px solid rgba(155, 89, 182, 0.3); color: var(--accent2); }
/* 分页 */
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.page-btn { padding: 8px 16px; background: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-sm); font-size: 13px; color: var(--text-muted); transition: var(--transition); }
.page-btn:hover, .page-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
/* 响应式 */
@media (max-width: 1024px) {
  .video-grid { grid-template-columns: repeat(2, 1fr); }
  .dw6smsze { grid-template-columns: repeat(2, 1fr); }
  .yrjd7k { grid-template-columns: repeat(2, 1fr); }
  .oqrmhr8 { grid-template-columns: repeat(2, 1fr); }
  .y9gxep4c { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .dzotj { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .site-nav { display: none; position: fixed; top: 70px; left: 0; right: 0; background: var(--bg-dark); flex-direction: column; padding: 20px; border-bottom: 1px solid var(--border-color); z-index: 999; }
  .site-nav.open { display: flex; }
  .hamburger { display: flex; }
  .btn-login, .btn-register { display: none; }
  .hero-banner { height: 360px; }
  .hero-title { font-size: 28px; }
  .54uk3yws { gap: 20px; }
  .54uk3yw-num { font-size: 20px; }
  .video-grid { grid-template-columns: 1fr; }
  .dw6smsze { grid-template-columns: repeat(2, 1fr); }
  .yrjd7k { grid-template-columns: 1fr; }
  .oqrmhr8 { grid-template-columns: 1fr; }
  .y9gxep4c { grid-template-columns: repeat(2, 1fr); }
  .uzy8h0 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .d0pd3c6 { flex-direction: column; align-items: flex-start; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .section { padding: 40px 0; }
  .section-title { font-size: 20px; }
}