/* ============================================================
   小蓝视频 官方网站 - 主样式表
   品牌色：深红 #C0392B | 金色 #F39C12 | 深色背景 #1a1a1a
   设计风格：影视传媒 · 暗色沉浸 · 金红配色
   ============================================================ */

/* ---- Reset & Base ---- */
*, *::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: #111118;
  color: #e8e0d5;
  line-height: 1.7;
  overflow-x: hidden;
}
a { color: #F39C12; text-decoration: none; transition: color .2s; }
a:hover { color: #e67e22; }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* ---- CSS Variables ---- */
:root {
  --red: #C0392B;
  --red-light: #e74c3c;
  --gold: #F39C12;
  --gold-light: #f5c842;
  --dark: #111118;
  --dark2: #1a1a24;
  --dark3: #22222e;
  --card-bg: #1e1e2a;
  --border: rgba(240,180,60,.18);
  --text: #e8e0d5;
  --text-muted: #9a9090;
  --radius: 10px;
  --shadow: 0 4px 24px rgba(0,0,0,.5);
}

/* ---- Layout ---- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section-sm { padding: 48px 0; }

/* ---- Header ---- */
#site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(17,17,24,.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 2px 20px rgba(0,0,0,.6);
}
.header-inner {
  display: flex; align-items: center; gap: 24px;
  padding: 12px 20px; max-width: 1200px; margin: 0 auto;
}
.site-logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.site-logo img { width: 44px; height: 44px; border-radius: 8px; object-fit: contain; }
.site-logo .8mhb8p { font-size: 1.35rem; font-weight: 800; color: #fff;
  letter-spacing: .04em; }
.site-logo .8mhb8p span { color: var(--gold); }

/* ---- Navigation ---- */
#main-nav { flex: 1; }
#main-nav ul { display: flex; gap: 4px; flex-wrap: wrap; }
#main-nav ul li a {
  display: block; padding: 7px 14px; border-radius: 6px;
  font-size: .92rem; color: #ccc; font-weight: 500;
  transition: background .2s, color .2s;
}
#main-nav ul li a:hover,
#main-nav ul li a.active { background: var(--red); color: #fff; }

/* ---- Search Bar ---- */
.header-search { display: flex; align-items: center; gap: 0; }
.header-search input {
  width: 200px; padding: 7px 14px;
  background: var(--dark3); border: 1px solid var(--border);
  border-radius: 20px 0 0 20px; color: #fff; font-size: .9rem; outline: none;
  transition: border-color .2s;
}
.header-search input:focus { border-color: var(--gold); }
.header-search button {
  padding: 7px 16px; background: var(--red); border: none;
  border-radius: 0 20px 20px 0; color: #fff; cursor: pointer;
  font-size: .9rem; transition: background .2s;
}
.header-search button:hover { background: var(--red-light); }

/* ---- Mobile Menu Toggle ---- */
.menu-toggle {
  display: none; background: none; border: none;
  color: #fff; font-size: 1.5rem; cursor: pointer; padding: 4px 8px;
}

/* ---- Hero Section ---- */
#hero {
  position: relative; min-height: 560px;
  background: url('../images/hero-banner.jpg') center/cover no-repeat;
  display: flex; align-items: center;
}
#hero::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(105deg, rgba(17,17,24,.92) 40%, rgba(192,57,43,.35) 100%);
}
.hero-content { position: relative; z-index: 1; max-width: 620px; padding: 60px 20px; margin-left: 60px; }
.7zugs50 {
  display: inline-block; background: var(--red); color: #fff;
  font-size: .78rem; font-weight: 700; padding: 4px 12px;
  border-radius: 4px; letter-spacing: .08em; margin-bottom: 16px; text-transform: uppercase;
}
.hero-content h1 {
  font-size: clamp(1.9rem, 4vw, 3rem); font-weight: 900; line-height: 1.2;
  color: #fff; margin-bottom: 18px;
}
.hero-content h1 .9lu8impi { color: var(--gold); }
.hero-content p { font-size: 1.05rem; color: rgba(255,255,255,.82); margin-bottom: 28px; max-width: 500px; }
.o2hnmnr9 { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--red); color: #fff; padding: 12px 28px;
  border-radius: 6px; font-weight: 700; font-size: 1rem;
  transition: background .2s, transform .15s;
}
.btn-primary:hover { background: var(--red-light); color: #fff; transform: translateY(-2px); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  border: 2px solid var(--gold); color: var(--gold); padding: 10px 26px;
  border-radius: 6px; font-weight: 700; font-size: 1rem;
  transition: background .2s, color .2s;
}
.btn-outline:hover { background: var(--gold); color: #111; }

/* ---- Section Titles ---- */
.section-title {
  text-align: center; margin-bottom: 48px;
}
.section-title h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 800; color: #fff;
  margin-bottom: 10px;
}
.section-title h2 span { color: var(--gold); }
.section-title p { color: var(--text-muted); font-size: .97rem; max-width: 560px; margin: 0 auto; }
.2z16wiy {
  width: 60px; height: 3px; background: linear-gradient(90deg, var(--red), var(--gold));
  margin: 12px auto 0; border-radius: 2px;
}

/* ---- Video Cards ---- */
.video-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 20px;
}
.video-card {
  background: var(--card-bg); border-radius: var(--radius);
  overflow: hidden; border: 1px solid var(--border);
  transition: transform .22s, box-shadow .22s;
  cursor: pointer;
}
.video-card:hover { transform: translateY(-5px); box-shadow: 0 12px 36px rgba(192,57,43,.3); }
.video-thumb {
  position: relative; aspect-ratio: 16/9; overflow: hidden;
  background: var(--dark3);
}
.video-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .4s;
}
.video-card:hover .video-thumb img { transform: scale(1.06); }
.play-btn {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  background: rgba(0,0,0,.35); opacity: 0; transition: opacity .2s;
}
.video-card:hover .play-btn { opacity: 1; }
.play-btn svg { width: 52px; height: 52px; fill: rgba(255,255,255,.92); }
.video-badge {
  position: absolute; top: 8px; left: 8px;
  background: var(--red); color: #fff; font-size: .72rem;
  padding: 2px 8px; border-radius: 3px; font-weight: 700;
}
.video-info { padding: 14px 16px; }
.video-info h3 { font-size: .95rem; font-weight: 700; color: #fff; margin-bottom: 6px;
  line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.video-meta { display: flex; gap: 12px; font-size: .8rem; color: var(--text-muted); }
.video-meta span { display: flex; align-items: center; gap: 4px; }

/* ---- Feature Cards ---- */
.wxbq04 { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }
.w63xm9e5 {
  background: var(--card-bg); border-radius: var(--radius);
  padding: 28px 24px; border: 1px solid var(--border);
  transition: border-color .2s, transform .2s;
}
.w63xm9e5:hover { border-color: var(--gold); transform: translateY(-4px); }
.bdjyee { font-size: 2.2rem; margin-bottom: 14px; }
.w63xm9e5 h3 { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 8px; }
.w63xm9e5 p { font-size: .9rem; color: var(--text-muted); line-height: 1.6; }

/* ---- Expert Cards ---- */
.jytb52ur { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 24px; }
.pswhig9 {
  background: var(--card-bg); border-radius: var(--radius);
  padding: 28px 20px; text-align: center; border: 1px solid var(--border);
  transition: border-color .2s;
}
.pswhig9:hover { border-color: var(--red); }
.a1ejls {
  width: 80px; height: 80px; border-radius: 50%;
  background: linear-gradient(135deg, var(--red), var(--gold));
  display: flex; align-items: center; justify-content: center;
  font-size: 2rem; margin: 0 auto 14px; color: #fff;
}
.pswhig9 h3 { font-size: 1rem; font-weight: 700; color: #fff; margin-bottom: 4px; }
.pswhig9 .role { font-size: .82rem; color: var(--gold); margin-bottom: 8px; }
.pswhig9 p { font-size: .85rem; color: var(--text-muted); }
.nkdsuk { display: flex; gap: 10px; justify-content: center; margin-top: 14px; }
.nkdsuk a {
  font-size: .78rem; padding: 5px 12px; border-radius: 4px;
  border: 1px solid var(--border); color: #ccc;
  transition: background .2s, color .2s;
}
.nkdsuk a:hover { background: var(--red); color: #fff; border-color: var(--red); }

/* ---- Partner Logos ---- */
.1egjq {
  display: flex; flex-wrap: wrap; gap: 16px; justify-content: center; align-items: center;
}
.9dwrat {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: 8px; padding: 14px 24px;
  font-weight: 700; color: #ccc; font-size: .95rem;
  transition: border-color .2s, color .2s;
}
.9dwrat:hover { border-color: var(--gold); color: var(--gold); }

/* ---- Stats Bar ---- */
.6t5kph5i {
  background: linear-gradient(90deg, var(--red) 0%, #8e1a10 100%);
  padding: 32px 0;
}
.dsd7mis { display: flex; gap: 0; justify-content: space-around; flex-wrap: wrap; }
.seo7jf { text-align: center; padding: 12px 24px; }
.seo7jf .num { font-size: 2.2rem; font-weight: 900; color: #fff; }
.seo7jf .label { font-size: .85rem; color: rgba(255,255,255,.8); margin-top: 4px; }

/* ---- Review Cards ---- */
.ytm8jnb { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.d13yf {
  background: var(--card-bg); border-radius: var(--radius);
  padding: 22px 20px; border: 1px solid var(--border);
}
.bi63mz { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.j5a2f {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--red), var(--gold));
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: #fff; flex-shrink: 0;
}
.k3f1sy { font-weight: 700; color: #fff; font-size: .95rem; }
.i4x59x { color: var(--gold); font-size: .85rem; }
.d13yf p { font-size: .9rem; color: var(--text-muted); line-height: 1.65; }

/* ---- FAQ ---- */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: var(--card-bg); border: 1px solid var(--border);
  border-radius: var(--radius); margin-bottom: 12px; overflow: hidden;
}
.faq-q {
  width: 100%; text-align: left; padding: 18px 22px;
  background: none; border: none; color: #fff; font-size: .97rem;
  font-weight: 700; cursor: pointer; display: flex; justify-content: space-between;
  align-items: center; gap: 12px; transition: color .2s;
}
.faq-q:hover { color: var(--gold); }
.faq-q .arrow { transition: transform .25s; font-size: 1.1rem; color: var(--gold); }
.faq-item.open .faq-q .arrow { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s ease; }
.faq-a-inner { padding: 0 22px 18px; color: var(--text-muted); font-size: .92rem; line-height: 1.7; }
.faq-item.open .faq-a { max-height: 300px; }

/* ---- Contact Section ---- */
.fpvqc2xl { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.j48800s7 h3 { font-size: 1.15rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.ftzpl5 { display: flex; gap: 12px; align-items: flex-start; margin-bottom: 14px; }
.ftzpl5 .icon { font-size: 1.2rem; flex-shrink: 0; margin-top: 2px; }
.ftzpl5 .text { font-size: .92rem; color: var(--text-muted); }
.ftzpl5 .text strong { color: #fff; display: block; margin-bottom: 2px; }
.tmhzxx { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 20px; }
.o9e5yiuw { text-align: center; }
.otg8xq8 {
  width: 110px; height: 110px; background: #fff; border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 8px; overflow: hidden;
}
.otg8xq8 img { width: 100%; height: 100%; object-fit: cover; }
.o9e5yiuw p { font-size: .78rem; color: var(--text-muted); }

/* ---- Share Bar ---- */
.jo02zrs2 {
  background: var(--dark2); padding: 20px 0; border-top: 1px solid var(--border);
}
.ykm27rz { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; justify-content: center; }
.a7moyc1 { font-size: .9rem; color: var(--text-muted); }
.r1f1ge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 16px; border-radius: 20px; font-size: .85rem; font-weight: 600;
  border: 1px solid var(--border); color: #ccc; transition: all .2s;
}
.r1f1ge:hover { border-color: var(--gold); color: var(--gold); }
.r1f1ge.wechat:hover { border-color: #07c160; color: #07c160; }
.r1f1ge.weibo:hover { border-color: #e6162d; color: #e6162d; }
.r1f1ge.douyin:hover { border-color: #fe2c55; color: #fe2c55; }
.r1f1ge.bilibili:hover { border-color: #00a1d6; color: #00a1d6; }

/* ---- Footer ---- */
#site-footer {
  background: #0d0d12; border-top: 1px solid var(--border);
  padding: 48px 0 24px;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-brand .x7rtkvk { font-size: 1.3rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
.footer-brand .x7rtkvk span { color: var(--gold); }
.footer-brand p { font-size: .88rem; color: var(--text-muted); line-height: 1.7; max-width: 280px; }
.footer-col h4 { font-size: .95rem; font-weight: 700; color: #fff; margin-bottom: 14px; }
.footer-col ul li { margin-bottom: 8px; }
.footer-col ul li a { font-size: .88rem; color: var(--text-muted); }
.footer-col ul li a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid var(--border); padding-top: 20px;
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px;
}
.footer-bottom p { font-size: .82rem; color: var(--text-muted); }
.footer-bottom .update-time { font-size: .8rem; color: var(--text-muted); }

/* ---- Breadcrumb ---- */
.breadcrumb {
  background: var(--dark2); padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.breadcrumb ol { display: flex; gap: 8px; align-items: center; font-size: .85rem; }
.breadcrumb ol li { color: var(--text-muted); }
.breadcrumb ol li a { color: var(--text-muted); }
.breadcrumb ol li a:hover { color: var(--gold); }
.breadcrumb ol li::after { content: '/'; margin-left: 8px; }
.breadcrumb ol li:last-child::after { content: ''; }
.breadcrumb ol li:last-child { color: var(--gold); }

/* ---- Page Hero ---- */
.page-hero {
  background: linear-gradient(135deg, var(--dark2) 0%, #1a0808 100%);
  padding: 60px 0; text-align: center; border-bottom: 1px solid var(--border);
}
.page-hero h1 { font-size: clamp(1.6rem, 3vw, 2.4rem); font-weight: 900; color: #fff; margin-bottom: 10px; }
.page-hero h1 span { color: var(--gold); }
.page-hero p { color: var(--text-muted); font-size: .97rem; }

/* ---- Video Player Page ---- */
.video-player-wrap {
  background: #000; border-radius: var(--radius); overflow: hidden;
  aspect-ratio: 16/9; margin-bottom: 24px;
}
.video-player-wrap iframe,
.video-player-wrap video {
  width: 100%; height: 100%; border: none;
}
.video-detail h1 { font-size: 1.5rem; font-weight: 800; color: #fff; margin-bottom: 10px; }
.video-detail .meta { display: flex; gap: 16px; font-size: .85rem; color: var(--text-muted); margin-bottom: 16px; }
.video-detail .desc { font-size: .93rem; color: var(--text-muted); line-height: 1.7; }
.hhxbn { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 14px; }
.tag { background: var(--dark3); border: 1px solid var(--border); color: var(--text-muted);
  font-size: .78rem; padding: 3px 10px; border-radius: 4px; }

/* ---- Section BG variants ---- */
.0qhzns { background: var(--dark2); }
.rgh19po1 { background: var(--dark3); }
.jwqcy2g {
  background: url('../images/section-films.jpg') center/cover no-repeat;
  position: relative;
}
.jwqcy2g::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(17,17,24,.88);
}
.jwqcy2g > * { position: relative; z-index: 1; }
.62dfq {
  background: url('../images/section-community.jpg') center/cover no-repeat;
  position: relative;
}
.62dfq::before {
  content: ''; position: absolute; inset: 0;
  background: rgba(17,17,24,.85);
}
.62dfq > * { position: relative; z-index: 1; }

/* ---- Tabs ---- */
.tab-nav { display: flex; gap: 4px; margin-bottom: 28px; border-bottom: 1px solid var(--border); }
.tab-btn {
  padding: 10px 20px; background: none; border: none; border-bottom: 2px solid transparent;
  color: var(--text-muted); font-size: .93rem; font-weight: 600; cursor: pointer;
  transition: color .2s, border-color .2s; margin-bottom: -1px;
}
.tab-btn.active, .tab-btn:hover { color: var(--gold); border-bottom-color: var(--gold); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .fpvqc2xl { grid-template-columns: 1fr; }
  .hero-content { margin-left: 20px; }
}
@media (max-width: 680px) {
  .header-inner { flex-wrap: wrap; gap: 10px; }
  #main-nav { display: none; width: 100%; order: 3; }
  #main-nav.open { display: block; }
  #main-nav ul { flex-direction: column; gap: 2px; }
  .menu-toggle { display: block; margin-left: auto; }
  .header-search { order: 2; }
  .header-search input { width: 140px; }
  .footer-grid { grid-template-columns: 1fr; }
  .dsd7mis { gap: 0; }
  .seo7jf { padding: 10px 16px; }
  .hero-content { margin-left: 0; padding: 40px 20px; }
  #hero { min-height: 420px; }
}