:root{
  --bg:#0b0b0f;--surface:#14141a;--elevated:#1c1c24;--ink:#f4f4f7;
  --muted:rgba(244,244,247,.62);--primary:#ff3d6e;--accent:#7c5cff;
  --line:rgba(244,244,247,.10);--success:#3dd68c;--danger:#ff5c5c;
  --fd:system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --safe-b:env(safe-area-inset-bottom,0px);
  --topbar-h:57px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--fd);line-height:1.45;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;min-height:100svh;max-width:100vw}
a{color:inherit;text-decoration:none}
button,input,textarea,select{font:inherit;color:inherit}
img{max-width:100%;display:block}
h1,h2,h3{margin:0;font-weight:700;letter-spacing:-.02em}
/* top bar */
.topbar{position:sticky;top:0;z-index:40;display:flex;align-items:center;gap:12px;
  padding:10px 14px;background:color-mix(in srgb,var(--bg) 88%,transparent);
  backdrop-filter:blur(16px);border-bottom:1px solid var(--line);min-height:var(--topbar-h)}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:17px;letter-spacing:-.03em;flex-shrink:0}
.logo .mark{width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary),var(--accent));font-size:14px}
.search{flex:1;max-width:640px;margin:0 auto;display:flex;min-width:0}
.search input{flex:1;min-width:0;background:var(--surface);border:1px solid var(--line);border-right:0;
  border-radius:999px 0 0 999px;padding:11px 18px;outline:none}
.search input:focus{border-color:var(--accent)}
.search button{background:var(--elevated);border:1px solid var(--line);border-radius:0 999px 999px 0;
  padding:0 18px;cursor:pointer;color:var(--muted)}
.top-actions{display:flex;gap:8px;align-items:center;flex-shrink:0}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 14px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);cursor:pointer;font-weight:600;font-size:13px;
  white-space:nowrap;transition:border-color .15s,background .15s,transform .1s}
.btn:active{transform:scale(.98)}
.btn.primary{background:var(--primary);border-color:transparent;color:#fff}
.btn.accent{background:var(--accent);border-color:transparent;color:#fff}
.btn.ghost:hover,.btn:hover{border-color:var(--accent)}
.btn.active,.nav-link.active{border-color:var(--primary);color:#fff;background:color-mix(in srgb,var(--primary) 22%,var(--surface))}
.btn.liked{border-color:var(--primary);color:var(--primary);background:color-mix(in srgb,var(--primary) 14%,transparent)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.block{width:100%}
.btn.sm{padding:8px 12px;font-size:12px}
@media(max-width:720px){
  .search{display:none}
  .top-actions .hide-sm{display:none}
  .topbar{padding:10px 12px;gap:8px}
  .btn{padding:9px 12px;font-size:12px}
}
/* shell */
.shell{display:grid;grid-template-columns:220px 1fr;min-height:calc(100svh - var(--topbar-h))}
.side{padding:18px 12px;border-right:1px solid var(--line);position:sticky;top:var(--topbar-h);height:calc(100svh - var(--topbar-h));overflow:auto}
.side a{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:12px;color:var(--muted);font-size:14px;font-weight:600}
.side a:hover,.side a.active{background:var(--elevated);color:var(--ink)}
.side .sec{margin:18px 12px 8px;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.main{padding:20px 22px 60px;min-width:0}
@media(max-width:900px){
  .shell{grid-template-columns:1fr}
  .side{display:none}
  .main{padding:16px 14px 80px}
}
/* feed */
.hero-strip{display:grid;grid-template-columns:1.4fr 1fr;gap:16px;margin-bottom:28px}
@media(max-width:900px){.hero-strip{grid-template-columns:1fr}}
.hero-card{position:relative;border-radius:18px;overflow:hidden;min-height:240px;border:1px solid var(--line);
  display:flex;align-items:flex-end;padding:22px;background:linear-gradient(135deg,#1c1c24,#7c5cff 60%,#ff3d6e)}
.hero-card h1{font-size:clamp(26px,4vw,40px);max-width:16ch}
.hero-card p{color:rgba(255,255,255,.85);margin:10px 0 0;max-width:42ch;font-size:15px}
.hero-side{display:grid;gap:12px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.stat b{display:block;font-size:22px}
.stat span{color:var(--muted);font-size:13px}
.section-h{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin:8px 0 16px}
.section-h h2{font-size:20px}
.section-h a{color:var(--muted);font-size:13px}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
@media(max-width:1200px){.grid{grid-template-columns:repeat(3,1fr)}}
@media(max-width:800px){.grid{grid-template-columns:repeat(2,1fr);gap:14px}}
@media(max-width:480px){.grid{grid-template-columns:1fr}}
.vcard{display:block;min-width:0}
.thumb{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:var(--elevated);border:1px solid var(--line)}
.thumb.thumb-short{aspect-ratio:9/16;max-height:280px;margin-inline:auto;width:min(100%,160px)}
.thumb img{width:100%;height:100%;object-fit:cover}
.thumb-mark{position:absolute;inset:0;display:grid;place-items:center;font-size:36px;opacity:.55}
.dur{position:absolute;right:8px;bottom:8px;background:rgba(0,0,0,.78);padding:2px 6px;border-radius:6px;font-size:11px;font-weight:700}
.pill{position:absolute;left:8px;top:8px;background:var(--primary);color:#fff;font-size:10px;font-weight:800;
  letter-spacing:.08em;text-transform:uppercase;padding:3px 8px;border-radius:999px}
.pill.short-pill{left:auto;right:8px;top:8px;background:var(--accent)}
.meta{display:grid;grid-template-columns:40px 1fr;gap:10px;margin-top:10px}
.av{width:40px;height:40px;border-radius:999px;background:var(--elevated);border:1px solid var(--line);
  display:grid;place-items:center;font-weight:800;color:var(--accent);flex-shrink:0}
.meta h3{font-size:14px;font-weight:650;line-height:1.3;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.sub{color:var(--muted);font-size:12px;margin-top:3px}
/* watch */
.watch{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:20px}
@media(max-width:1000px){.watch{grid-template-columns:1fr}}
.player{background:#000;border-radius:16px;overflow:hidden;border:1px solid var(--line);aspect-ratio:16/9;
  display:grid;place-items:center;position:relative}
.player.player-short{aspect-ratio:9/16;max-height:min(72svh,640px);width:min(100%,360px);margin-inline:auto}
.player .stage{position:absolute;inset:0;display:grid;place-items:center}
.player .stage .big{font-size:64px;opacity:.7}
.player video{width:100%;height:100%;object-fit:contain;background:#000}
.wtitle{font-size:clamp(18px,2.4vw,26px);margin:16px 0 8px}
.wrow{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;margin-bottom:14px}
.wrow .left{display:flex;gap:12px;align-items:center;min-width:0}
.wactions{display:flex;gap:8px;flex-wrap:wrap}
.descbox{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px;color:var(--muted);font-size:14px;white-space:pre-wrap}
.rail h3{font-size:15px;margin-bottom:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.12em}
.rail .vcard .meta{grid-template-columns:1fr}
.rail .vcard .av{display:none}
.rail .grid{grid-template-columns:1fr;gap:12px}
/* comments */
.comments{margin-top:22px}
.comments h2{font-size:16px;margin-bottom:12px}
.comment-form{display:flex;gap:10px;margin-bottom:16px;align-items:flex-start}
.comment-form textarea{flex:1;min-width:0;min-height:44px;max-height:120px;resize:vertical;
  background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;outline:none}
.comment-form textarea:focus{border-color:var(--accent)}
.comment-list{display:grid;gap:12px}
.comment{display:grid;grid-template-columns:36px 1fr;gap:10px;padding:12px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line)}
.comment .c-head{display:flex;flex-wrap:wrap;gap:8px;align-items:baseline}
.comment .c-head strong{font-size:13px}
.comment .c-head time{font-size:11px;color:var(--muted)}
.comment .c-body{font-size:14px;margin-top:4px;color:var(--ink);white-space:pre-wrap;word-break:break-word}
.toast{position:fixed;bottom:calc(24px + var(--safe-b));left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--elevated);border:1px solid var(--line);padding:12px 18px;border-radius:999px;
  font-size:13px;font-weight:600;z-index:80;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;
  max-width:min(90vw,360px);text-align:center}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
/* channel */
.cbanner{height:160px;border-radius:16px;border:1px solid var(--line);
  background:linear-gradient(90deg,var(--elevated),var(--accent));margin-bottom:18px}
.chead{display:flex;gap:16px;align-items:center;margin-bottom:22px;flex-wrap:wrap}
.chead .av{width:72px;height:72px;font-size:28px}
.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}
.chip{padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);
  color:var(--muted);font-size:13px;cursor:pointer}
.chip.active,.chip:hover{border-color:var(--accent);color:var(--ink)}
/* upload / stage / auth panels */
.panel{max-width:720px;margin:0 auto;background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:24px}
.panel h1{font-size:24px;margin-bottom:8px}
.panel p.lead{color:var(--muted);margin:0 0 20px}
.panel.narrow{max-width:440px}
.field{margin-bottom:14px}
.field label{display:block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.field input,.field textarea,.field select{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:12px;padding:12px 14px;outline:none}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--accent)}
.field textarea{min-height:100px;resize:vertical}
.field .hint{font-size:12px;color:var(--muted);margin-top:6px}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:520px){.field-row{grid-template-columns:1fr}}
.note{font-size:13px;color:var(--muted);margin-top:16px;padding:12px;border-radius:12px;background:var(--bg);border:1px dashed var(--line)}
.note b{color:var(--success)}
.note.warn b,.note .warn{color:#ffb020}
.note.err{border-color:color-mix(in srgb,var(--danger) 40%,var(--line));color:var(--danger)}
.footer{border-top:1px solid var(--line);padding:28px 22px;color:var(--muted);font-size:13px;display:flex;flex-wrap:wrap;gap:16px;justify-content:space-between}
.footer a{color:var(--ink)}
.empty{text-align:center;color:var(--muted);padding:60px 20px}
/* multi-step upload */
.steps{display:flex;gap:8px;margin-bottom:22px;flex-wrap:wrap}
.step-dot{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;
  border:1px solid var(--line);background:var(--bg);font-size:12px;font-weight:600;color:var(--muted)}
.step-dot .n{width:22px;height:22px;border-radius:999px;display:grid;place-items:center;
  background:var(--elevated);font-size:11px}
.step-dot.on{border-color:var(--primary);color:var(--ink)}
.step-dot.on .n{background:var(--primary);color:#fff}
.step-dot.done{border-color:var(--success);color:var(--ink)}
.step-dot.done .n{background:var(--success);color:#0b0b0f}
.step-panel{display:none}
.step-panel.on{display:block}
.step-actions{display:flex;gap:10px;flex-wrap:wrap;justify-content:space-between;margin-top:18px}
.preview-box{border:1px dashed var(--line);border-radius:14px;background:var(--bg);min-height:180px;
  display:grid;place-items:center;overflow:hidden;position:relative}
.preview-box video,.preview-box img{width:100%;max-height:320px;object-fit:contain;background:#000}
.preview-box .ph{color:var(--muted);padding:24px;text-align:center;font-size:14px}
.toggle{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:12px;
  background:var(--bg);border:1px solid var(--line);cursor:pointer;user-select:none}
.toggle input{width:18px;height:18px;accent-color:var(--primary)}
.toggle .t-txt{flex:1;min-width:0}
.toggle .t-txt strong{display:block;font-size:14px}
.toggle .t-txt span{font-size:12px;color:var(--muted)}
.file-pick{position:relative}
.file-pick input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%;height:100%}
.file-pick .fake{display:flex;align-items:center;justify-content:center;gap:10px;padding:28px;
  border:1px dashed var(--line);border-radius:14px;background:var(--bg);color:var(--muted);font-weight:600}
.file-pick:hover .fake{border-color:var(--accent);color:var(--ink)}
/* auth */
.auth-wrap{min-height:calc(100svh - var(--topbar-h));display:grid;place-items:center;padding:24px 14px 48px}
.auth-tabs{display:flex;gap:8px;margin-bottom:18px}
.auth-tabs .chip{flex:1;text-align:center;border:none}
.auth-tabs .chip.active{background:color-mix(in srgb,var(--primary) 20%,var(--surface));color:var(--ink);border:1px solid var(--primary)}
.account-card{display:grid;gap:14px}
.account-head{display:flex;gap:14px;align-items:center}
.account-head .av{width:64px;height:64px;font-size:24px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;border:none}
.kv{display:grid;grid-template-columns:120px 1fr;gap:8px;font-size:14px;padding:10px 0;border-bottom:1px solid var(--line)}
.kv span{color:var(--muted)}
.kv b{word-break:break-all;font-weight:600}
/* ── Shorts: vertical 9:16 snap scroll ── */
body.shorts-page{overflow:hidden;height:100svh;background:#000}
body.shorts-page .topbar{position:fixed;top:0;left:0;right:0;background:color-mix(in srgb,#000 55%,transparent);
  border-bottom-color:transparent}
body.shorts-page .topbar .search{display:none}
.shorts-shell{position:fixed;inset:0;top:0;padding-top:var(--topbar-h);background:#000}
.shorts-feed{height:100%;overflow-y:scroll;scroll-snap-type:y mandatory;
  -webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;scrollbar-width:none}
.shorts-feed::-webkit-scrollbar{display:none}
.short-slide{position:relative;height:100%;min-height:100%;scroll-snap-align:start;scroll-snap-stop:always;
  display:grid;place-items:center;background:#000;overflow:hidden}
.short-stage{position:relative;width:min(100%,calc((100svh - var(--topbar-h)) * 9 / 16));
  height:100%;max-width:100vw;background:var(--elevated);overflow:hidden}
.short-stage video,.short-stage .short-poster{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.short-poster{display:grid;place-items:center}
.short-poster .big{font-size:56px;opacity:.75;filter:drop-shadow(0 4px 12px rgba(0,0,0,.5))}
.short-poster .dur-lg{margin-top:8px;font-weight:700;opacity:.85}
.short-overlay{position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.72) 100%)}
.short-meta{position:absolute;left:0;right:72px;bottom:0;padding:18px 16px calc(18px + var(--safe-b));
  pointer-events:auto;z-index:2}
.short-meta h2{font-size:16px;line-height:1.3;text-shadow:0 1px 8px rgba(0,0,0,.6);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.short-meta .sub{color:rgba(255,255,255,.85);text-shadow:0 1px 6px rgba(0,0,0,.5)}
.short-meta a{pointer-events:auto}
.short-rail{position:absolute;right:8px;bottom:calc(88px + var(--safe-b));display:flex;flex-direction:column;
  gap:14px;align-items:center;z-index:3;pointer-events:auto}
.short-rail .s-btn{width:48px;height:48px;border-radius:999px;border:1px solid rgba(255,255,255,.18);
  background:rgba(0,0,0,.35);backdrop-filter:blur(8px);color:#fff;cursor:pointer;
  display:grid;place-items:center;font-size:18px;font-weight:700}
.short-rail .s-btn:hover{border-color:var(--primary)}
.short-rail .s-btn.liked{color:var(--primary);border-color:var(--primary)}
.short-rail .s-lbl{font-size:11px;font-weight:700;text-align:center;text-shadow:0 1px 4px #000}
.shorts-empty{height:100%;display:grid;place-items:center;color:var(--muted);padding:24px;text-align:center}
.shorts-hint{position:fixed;bottom:calc(16px + var(--safe-b));left:50%;transform:translateX(-50%);
  font-size:12px;color:rgba(255,255,255,.55);z-index:5;pointer-events:none;letter-spacing:.04em}
/* mobile bottom nav (optional companion on non-shorts) */
.bottom-nav{display:none;position:fixed;bottom:0;left:0;right:0;z-index:35;
  background:color-mix(in srgb,var(--bg) 92%,transparent);backdrop-filter:blur(14px);
  border-top:1px solid var(--line);padding:8px 8px calc(8px + var(--safe-b));
  grid-template-columns:repeat(4,1fr);gap:4px}
.bottom-nav a{display:flex;flex-direction:column;align-items:center;gap:2px;padding:6px 4px;
  font-size:10px;font-weight:700;color:var(--muted);border-radius:10px}
.bottom-nav a.active,.bottom-nav a:hover{color:var(--ink);background:var(--elevated)}
.bottom-nav .ico{font-size:18px;line-height:1}
@media(max-width:900px){
  body.has-bottom-nav .main{padding-bottom:88px}
  body.has-bottom-nav .bottom-nav{display:grid}
  body.shorts-page .bottom-nav{display:none}
}
/* util */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.muted{color:var(--muted)}
.mt-0{margin-top:0}
.gap-sm{gap:8px}
.text-center{text-align:center}
.linkish{color:var(--accent);font-weight:600}
.linkish:hover{text-decoration:underline}
pre.json-out{display:none;margin-top:14px;padding:14px;background:var(--bg);border-radius:12px;
  border:1px solid var(--line);overflow:auto;font-size:12px;color:var(--muted);max-width:100%;
  white-space:pre-wrap;word-break:break-word}
pre.json-out.show{display:block}