:root{
  --bg:#0f0f0f;
  --fg:#f4f4f5;
  --muted:#a1a1aa;
  --line:rgba(255,255,255,.10);
  --card:#18181b;
  --card2:#202024;
  --accent:#ff0033;
  --accent2:#cc0029;
  --hover:#27272a;
  --shadow:0 18px 45px rgba(0,0,0,.35);
  --topbar:56px;
  --sidebar:240px;
  --radius:16px;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
}
html.light{
  --bg:#fafafa;
  --fg:#171717;
  --muted:#666;
  --line:rgba(0,0,0,.12);
  --card:#fff;
  --card2:#f1f1f1;
  --hover:#ececec;
  --shadow:0 18px 45px rgba(0,0,0,.14);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0;background:var(--bg);color:var(--fg)}
button,input,textarea{font:inherit;color:inherit}
button{cursor:pointer}
a{color:inherit}
.topbar{
  position:fixed;
  inset:0 0 auto 0;
  height:calc(var(--topbar) + env(safe-area-inset-top,0px));
  padding:env(safe-area-inset-top,0px) 12px 0 12px;
  z-index:1000;
  display:flex;
  align-items:center;
  gap:8px;
  border-bottom:1px solid var(--line);
  background:rgba(15,15,15,.94);
  backdrop-filter:saturate(150%) blur(14px);
  box-shadow:0 1px 0 rgba(255,255,255,.04);
}
html.light .topbar{background:rgba(250,250,250,.94)}
.icon-btn,.avatar-btn{
  width:40px;height:40px;border:0;border-radius:999px;background:transparent;display:inline-flex;align-items:center;justify-content:center;
  transition:.18s ease;background-clip:padding-box;flex:0 0 auto;
}
.icon-btn:hover,.avatar-btn:hover{background:var(--hover)}
.brand{border:0;background:transparent;display:flex;align-items:center;gap:8px;min-width:0;padding:0 4px 0 0;flex:0 0 auto}
.brand-mark{width:30px;height:30px;border-radius:8px;background:var(--accent);display:inline-flex;align-items:center;justify-content:center;color:#fff;font-size:15px;line-height:1;box-shadow:0 10px 25px rgba(255,0,51,.28)}
.brand-text{font-weight:800;font-size:20px;letter-spacing:-.03em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:180px}
.search{display:flex;align-items:center;min-width:0}
.desktop-search{flex:1;justify-content:center;margin:0 12px}
.search input{height:40px;width:min(650px,100%);background:var(--bg);border:1px solid var(--line);border-right:0;border-radius:999px 0 0 999px;padding:0 16px;outline:none}
.search input:focus{border-color:rgba(255,255,255,.25)}
html.light .search input:focus{border-color:rgba(0,0,0,.25)}
.search button{height:40px;min-width:54px;border:1px solid var(--line);border-radius:0 999px 999px 0;background:var(--card2)}
.top-actions{display:flex;align-items:center;gap:2px;margin-left:auto;min-width:0}
.avatar-btn{background:var(--accent);color:#fff;font-size:12px;font-weight:800;width:34px;height:34px}
.mobile-search{display:none;position:absolute;top:calc(var(--topbar) + env(safe-area-inset-top,0px));left:0;right:0;padding:8px 10px;background:var(--bg);border-bottom:1px solid var(--line);box-shadow:var(--shadow);z-index:1001}
.mobile-search.open{display:flex}
.sidebar{position:fixed;top:calc(var(--topbar) + env(safe-area-inset-top,0px));left:0;bottom:0;width:var(--sidebar);overflow:auto;border-right:1px solid var(--line);background:var(--bg);z-index:800;padding:12px 10px}
.sidebar-section{padding:6px 0;border-bottom:1px solid var(--line);margin-bottom:8px}.sidebar-section:last-child{border-bottom:0}.side-title{font-size:13px;font-weight:700;color:var(--muted);padding:8px 12px 4px}.side-item{width:100%;display:flex;align-items:center;gap:14px;border:0;background:transparent;border-radius:12px;padding:11px 12px;text-align:left;transition:.18s ease}.side-item:hover,.side-item.active{background:var(--hover)}.side-icon{width:24px;text-align:center;opacity:.94}.side-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.side-sub{font-size:12px;color:var(--muted);margin-left:auto}
.main{min-height:100vh;padding:calc(var(--topbar) + env(safe-area-inset-top,0px) + 16px) 24px 32px calc(var(--sidebar) + 24px)}
.chips{position:sticky;top:calc(var(--topbar) + env(safe-area-inset-top,0px));z-index:600;display:flex;gap:10px;overflow-x:auto;padding:4px 0 18px;background:linear-gradient(var(--bg) 70%, transparent);scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.chip{border:0;border-radius:10px;background:var(--card2);padding:8px 14px;white-space:nowrap;transition:.18s ease}.chip:hover,.chip.active{background:var(--fg);color:var(--bg)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:26px 18px}.video-card{min-width:0}.thumb-wrap{position:relative;aspect-ratio:16/9;border:0;border-radius:var(--radius);overflow:hidden;background:var(--card2);display:block;width:100%;padding:0}.thumb-wrap img{width:100%;height:100%;display:block;object-fit:cover;transition:transform .28s ease}.thumb-wrap:hover img{transform:scale(1.04)}.duration{position:absolute;right:8px;bottom:7px;background:rgba(0,0,0,.82);color:#fff;border-radius:6px;padding:3px 6px;font-size:12px;font-weight:700}.card-meta{display:flex;gap:12px;padding-top:10px}.avatar{width:38px;height:38px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;color:#fff;font-weight:800;flex:0 0 auto;border:0}.avatar.small{width:28px;height:28px;font-size:12px}.card-title{font-weight:700;line-height:1.35;margin:0 0 4px;font-size:15px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.linkish{border:0;background:transparent;padding:0;text-align:left;color:var(--muted)}.linkish:hover{color:var(--fg)}.meta{color:var(--muted);font-size:13px;line-height:1.45}.section-title{font-size:24px;margin:4px 0 18px}.empty,.loading{color:var(--muted);padding:34px 10px;text-align:center}.watch-layout{display:grid;grid-template-columns:minmax(0,1fr) 390px;gap:24px;align-items:start}.player{width:100%;aspect-ratio:16/9;border-radius:18px;background:#000;overflow:hidden}.player video{width:100%;height:100%;display:block}.watch-title{font-size:22px;line-height:1.32;margin:16px 0 10px}.watch-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.channel-row{display:flex;align-items:center;gap:12px;min-width:0}.channel-row .info{min-width:0}.channel-name{font-weight:800}.btn{border:0;border-radius:999px;background:var(--fg);color:var(--bg);padding:10px 16px;font-weight:700}.btn.secondary{background:var(--card2);color:var(--fg)}.btn.danger{background:var(--accent);color:#fff}.actions-group{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.description{margin-top:14px;background:var(--card2);padding:14px;border-radius:14px;line-height:1.65;white-space:pre-wrap}.related-list{display:flex;flex-direction:column;gap:12px}.related-card{display:grid;grid-template-columns:168px minmax(0,1fr);gap:10px;border:0;background:transparent;text-align:left}.related-card img{width:168px;aspect-ratio:16/9;object-fit:cover;border-radius:12px}.related-card .card-title{font-size:13px;margin:0}.comments{margin-top:28px}.comment-form{display:flex;gap:10px;margin:14px 0 22px}.comment-form input{flex:1;border:0;border-bottom:1px solid var(--line);background:transparent;outline:none;padding:10px}.comment{display:flex;gap:12px;margin:16px 0}.comment-body{min-width:0;flex:1}.comment-author{font-weight:800;font-size:13px}.reply{margin-left:48px}.channel-banner{height:180px;border-radius:20px;background-size:cover;background-position:center;margin-bottom:18px;box-shadow:var(--shadow)}.channel-head{display:flex;align-items:center;gap:18px;margin-bottom:24px}.channel-head .avatar{width:88px;height:88px;font-size:28px}.toast{position:fixed;left:50%;top:75px;transform:translateX(-50%) translateY(-20px);background:var(--fg);color:var(--bg);padding:12px 16px;border-radius:999px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:.22s ease;z-index:2000;font-weight:700}.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.mobile-backdrop{display:none}.mobile-drawer{display:none}.mobile-only{display:none}.footer{color:var(--muted);font-size:13px;margin-top:36px;border-top:1px solid var(--line);padding-top:18px}.skeleton{min-height:120px;border-radius:16px;background:linear-gradient(90deg,var(--card),var(--card2),var(--card));background-size:200% 100%;animation:pulse 1.1s infinite}@keyframes pulse{to{background-position:-200% 0}}
@media (max-width:1023px){.sidebar{display:none}.main{padding-left:16px;padding-right:16px}.mobile-backdrop.open{display:block;position:fixed;inset:0;background:rgba(0,0,0,.52);z-index:850}.mobile-drawer{display:block;position:fixed;top:calc(var(--topbar) + env(safe-area-inset-top,0px));left:0;bottom:0;width:min(290px,86vw);background:var(--bg);border-right:1px solid var(--line);z-index:900;transform:translateX(-105%);transition:transform .22s ease;overflow:auto;padding:10px}.mobile-drawer.open{transform:translateX(0)}.watch-layout{grid-template-columns:1fr}.related-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.related-card{grid-template-columns:1fr}.related-card img{width:100%}.chips{margin-left:-16px;margin-right:-16px;padding-left:16px;padding-right:16px}.channel-banner{height:140px}.desktop-search{display:none}.mobile-only{display:inline-flex}}
@media (max-width:560px){.topbar{gap:4px;padding-left:8px;padding-right:8px}.brand-text{font-size:16px;max-width:118px}.brand-mark{width:28px;height:28px}.icon-btn{width:36px;height:36px}.avatar-btn{width:32px;height:32px}.hide-mobile{display:none}.hide-xs{display:none}.main{padding-left:12px;padding-right:12px;padding-top:calc(var(--topbar) + env(safe-area-inset-top,0px) + 12px)}.grid{grid-template-columns:1fr;gap:24px}.watch-title{font-size:18px}.watch-actions{align-items:flex-start}.actions-group{width:100%}.actions-group .btn{flex:1}.comment-form{align-items:flex-end}.comment-form .btn{padding:9px 12px}.channel-head{align-items:flex-start}.channel-head .avatar{width:64px;height:64px}.section-title{font-size:20px}.toast{max-width:calc(100vw - 24px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}}
@media (max-width:350px){.brand-text{max-width:86px}.icon-btn{width:34px}.avatar-btn{width:30px;height:30px}.top-actions{gap:0}}