:root{
  --bg:#0f1118;--fg:#eaf0fa;--mut:#a3afc4;--card:rgba(28,32,46,.6);--bd:rgba(255,255,255,.10);
  --pri:#7fdcff;--acc:#b794f6;--pri-fg:#0f1118;--radius:12px;
  --grad:linear-gradient(135deg,var(--pri),var(--acc));
  --glow:0 10px 40px -12px rgba(183,148,246,.45);
}
*{box-sizing:border-box;border-color:var(--bd)}
html,body{margin:0;padding:0}
body{
  background:
    radial-gradient(60rem 40rem at 10% -10%,rgba(127,220,255,.13),transparent 60%),
    radial-gradient(50rem 35rem at 100% 10%,rgba(183,148,246,.16),transparent 60%),
    var(--bg);
  background-attachment:fixed;color:var(--fg);
  font-family:ui-sans-serif,system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
a:hover{color:var(--pri)}
img{display:block;max-width:100%;height:auto}
h1,h2,h3,h4{margin:0 0 .4em}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}
.muted{color:var(--mut)}
.small{font-size:12px}
.brand-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.btn{display:inline-flex;align-items:center;padding:10px 20px;border-radius:8px;font-weight:600;border:1px solid var(--bd);cursor:pointer}
.btn.primary{background:var(--grad);color:var(--pri-fg);box-shadow:var(--glow)}
.btn.glass{background:var(--card);backdrop-filter:blur(14px)}
.chip{display:inline-block;background:var(--card);border:1px solid var(--bd);border-radius:999px;padding:4px 12px;font-size:12px;color:var(--pri)}

/* header */
.hdr{position:sticky;top:0;z-index:40;backdrop-filter:blur(14px);background:rgba(15,17,24,.7);border-bottom:1px solid var(--bd)}
.hdr-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;padding:10px 16px}
.brand{display:flex;align-items:center;flex-shrink:0}
.nav{display:flex;flex-wrap:wrap;gap:4px;flex:1;min-width:0;font-size:14px}
.nav a{padding:6px 12px;border-radius:6px;color:var(--mut)}
.nav a:hover,.nav a.on{color:var(--fg);background:rgba(255,255,255,.06)}
.search{display:none;align-items:center;gap:8px;background:var(--card);border:1px solid var(--bd);border-radius:8px;padding:6px 10px;backdrop-filter:blur(14px)}
.search input{background:transparent;border:0;outline:0;color:var(--fg);width:160px;font-size:14px}
.search button{background:transparent;border:0;color:var(--mut);cursor:pointer}
@media(min-width:768px){.search{display:flex}}

/* hero */
.hero{display:grid;grid-template-columns:1fr;gap:32px;padding:48px 16px;align-items:center}
@media(min-width:1024px){.hero{grid-template-columns:1.1fr 1fr;padding:80px 16px}}
.hero h1{font-size:clamp(32px,5vw,60px);font-weight:800;line-height:1.1}
.hero h1 .sub{display:block;font-size:16px;font-weight:400;margin-top:12px;color:var(--mut)}
.hero .lead{max-width:560px;margin-top:18px}
.hero .cta{margin-top:24px;display:flex;flex-wrap:wrap;gap:12px}

/* breadcrumb */
.bc{padding:14px 16px;font-size:14px;color:var(--mut)}
.bc ol{display:flex;gap:8px;flex-wrap:wrap;margin:0;padding:0;list-style:none}
.bc .cur{color:var(--fg)}

/* channel sections */
.ch{padding:64px 16px 0}
.ch-h{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:18px}
.ch-h h2{font-size:clamp(22px,3vw,30px);font-weight:700;margin:0}
.more{font-size:14px;color:var(--mut);flex-shrink:0}
.more:hover{color:var(--fg)}
.ch-side{display:grid;gap:24px}
@media(min-width:1024px){.ch-side{grid-template-columns:1fr 280px}}

/* eeat panels */
.eeat{background:var(--card);border:1px solid var(--bd);border-left:4px solid var(--pri);border-radius:var(--radius);padding:20px;backdrop-filter:blur(14px)}
.eeat h3{font-size:13px;color:var(--pri);margin-bottom:8px;font-weight:600}
.eeat p{font-size:14px;color:var(--mut);margin:0}
.eeat-mid{grid-column:1/-1;border-left-color:var(--acc);margin:8px 0}
.eeat-mid h3{color:var(--acc)}
.eeat-side{border-left-color:var(--acc);align-self:start}
.eeat-side h3{color:var(--acc)}
.eeat-top{margin-bottom:18px}

/* grid */
.grid{display:grid;gap:16px}
.grid.c2{grid-template-columns:repeat(2,1fr)}
@media(min-width:768px){.grid.m3{grid-template-columns:repeat(3,1fr)}}
@media(min-width:1024px){.grid.l4{grid-template-columns:repeat(4,1fr)}}

/* card */
.card{background:var(--card);border:1px solid var(--bd);border-radius:var(--radius);overflow:hidden;backdrop-filter:blur(14px);transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-2px);box-shadow:var(--glow)}
.thumb{position:relative;aspect-ratio:16/9;margin:0;background:#1c2030;overflow:hidden}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .thumb img{transform:scale(1.05)}
.thumb .play{position:absolute;inset:0;display:grid;place-items:center;opacity:0;background:rgba(0,0,0,.1);transition:opacity .25s}
.card:hover .thumb .play{opacity:1}
.thumb .dur{position:absolute;bottom:6px;right:6px;font-style:normal;font-size:11px;padding:2px 6px;background:rgba(0,0,0,.6);color:#fff;border-radius:4px;font-variant-numeric:tabular-nums}
.thumb .tag{position:absolute;top:6px;left:6px;font-style:normal;font-size:11px;padding:2px 6px;border-radius:4px;background:var(--grad);color:var(--pri-fg);font-weight:700}
.meta{padding:12px}
.meta h3{font-size:14px;font-weight:500;line-height:1.45;margin:0;display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:2;overflow:hidden}
.meta .row{display:flex;justify-content:space-between;font-size:12px;color:var(--mut);margin-top:8px;font-variant-numeric:tabular-nums}

/* channel hero / contact / search */
.ch-hero{background:var(--card);border:1px solid var(--bd);border-left:4px solid var(--pri);border-radius:var(--radius);padding:32px;backdrop-filter:blur(14px);margin:14px auto}
.ch-hero h1{font-size:clamp(28px,4vw,40px);font-weight:800}
.ch-hero h1 .sub{display:block;font-size:14px;font-weight:400;color:var(--mut);margin-top:8px}
.contact{list-style:none;margin:18px 0 0;padding:0;display:flex;flex-direction:column;gap:10px;font-size:15px}

/* video */
.video{padding:24px 16px}
.player{position:relative;background:var(--card);border:1px solid var(--bd);border-radius:var(--radius);overflow:hidden;aspect-ratio:16/9;margin:0}
.player img{width:100%;height:100%;object-fit:cover}
.player .play{position:absolute;inset:0;display:grid;place-items:center;background:rgba(0,0,0,.3)}
.video h1{font-size:clamp(22px,3vw,32px);margin-top:24px}
.vmeta{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:14px;color:var(--mut);margin:14px 0 24px}

/* search */
.search-big{display:flex;gap:8px;margin-top:18px}
.search-big input{flex:1;background:transparent;border:1px solid var(--bd);border-radius:8px;padding:10px 14px;outline:0;color:var(--fg)}
.search-big input:focus{border-color:var(--pri)}
.search-grp{margin-bottom:36px}
.search-grp h2{font-size:18px;margin-bottom:12px}

/* faq */
.faq{padding:64px 16px 0}
.faq h2{font-size:clamp(22px,3vw,30px);margin-bottom:20px}
.faq details{background:var(--card);border:1px solid var(--bd);border-radius:var(--radius);padding:18px;backdrop-filter:blur(14px);margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:500;display:flex;justify-content:space-between;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary span{color:var(--pri)}
.faq details p{margin:14px 0 0;font-size:14px;color:var(--mut)}

/* footer */
.ftr{margin-top:96px;border-top:1px solid var(--bd);background:rgba(15,17,24,.4)}
.ftr-grid{display:grid;gap:36px;padding:48px 16px;grid-template-columns:1fr}
@media(min-width:768px){.ftr-grid{grid-template-columns:repeat(3,1fr)}}
.ftr h4{font-size:16px;margin-bottom:12px}
.ftr .links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:8px;font-size:14px}
.ftr .links a{color:var(--mut)}
.ftr .links a:hover{color:var(--fg)}
.ftr .tags{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:8px}
.ftr .tags li{font-size:12px;padding:4px 10px;background:var(--card);border:1px solid var(--bd);border-radius:999px;color:var(--mut);backdrop-filter:blur(14px)}
.ftr-bot{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px;font-size:12px;color:var(--mut);padding:14px 16px;border-top:1px solid var(--bd)}