:root { --panel-w: 420px; --gut: 20px; color-scheme: dark; }
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; overflow: hidden; background: var(--bg); color: var(--ink);
  font: 13px/1.45 'UI', ui-monospace, SFMono-Regular, Menlo, monospace; -webkit-font-smoothing: antialiased; }
a { color: inherit; }
button, select, input { font: inherit; color: inherit; }
#stage { position: fixed; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; cursor: grab; }
#stage.hover { cursor: pointer; }

#head { position: fixed; top: var(--gut); left: var(--gut); max-width: min(520px, calc(100vw - 2 * var(--gut))); pointer-events: none; }
#head a { pointer-events: auto; }
h1 { font: 650 clamp(26px, 3.4vw, 44px)/1.02 'Display', system-ui, sans-serif; letter-spacing: -0.03em; margin: 0 0 10px; }
#subtitle { margin: 0 0 6px; color: var(--mute); max-width: 44ch; }
.credit { margin: 0; display: flex; gap: 14px; }
.credit a { color: var(--accent); text-decoration: none; border-bottom: 1px solid color-mix(in srgb, var(--accent) 40%, transparent); }
.credit a:hover { border-bottom-color: var(--accent); }

#search { position: fixed; top: var(--gut); right: var(--gut); width: min(340px, calc(100vw - 2 * var(--gut))); z-index: 5; }
#q { width: 100%; padding: 11px 14px; border-radius: 10px; border: 1px solid var(--dim); background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); outline: none; }
#q:focus { border-color: var(--mute); }
#results { list-style: none; margin: 6px 0 0; padding: 4px; border-radius: 10px; border: 1px solid var(--dim); background: var(--bg); max-height: 60vh; overflow: auto; }
#results li { display: flex; gap: 10px; align-items: center; padding: 6px; border-radius: 7px; cursor: pointer; }
#results li[aria-selected="true"], #results li:hover { background: var(--dim); }
#results .t { min-width: 0; }
#results .n { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#results .s { color: var(--mute); font-size: 11px; }

.thumb { flex: none; width: 64px; height: 36px; border-radius: 4px; background-color: var(--dim); background-repeat: no-repeat; }

#filters { position: fixed; left: var(--gut); bottom: var(--gut); right: calc(var(--gut) + 260px); display: grid; gap: 10px; pointer-events: none; }
#filters > * { pointer-events: auto; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { display: inline-flex; align-items: center; gap: 7px; padding: 6px 11px; border-radius: 999px; border: 1px solid var(--dim);
  background: color-mix(in srgb, var(--bg) 80%, transparent); cursor: pointer; white-space: nowrap; }
.chip i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.chip b { font-weight: 400; color: var(--mute); }
.chip[aria-pressed="true"] { border-color: var(--ink); }
.chips.small .chip { padding: 3px 9px; font-size: 11px; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
select, .toggle, .ghost { padding: 6px 11px; border-radius: 999px; border: 1px solid var(--dim); background: color-mix(in srgb, var(--bg) 80%, transparent); cursor: pointer; }
.toggle[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
.ghost:hover, .toggle:hover, .chip:hover, select:hover { border-color: var(--mute); }
.count { color: var(--mute); }

#hint { position: fixed; right: var(--gut); bottom: var(--gut); margin: 0; color: var(--mute); pointer-events: none; transition: opacity .6s; }
#hint.gone { opacity: 0; }

#scrim { position: fixed; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, var(--bg) 0, color-mix(in srgb, var(--bg) 70%, transparent) 110px, transparent 210px),
              linear-gradient(0deg, var(--bg) 0, color-mix(in srgb, var(--bg) 60%, transparent) 70px, transparent 150px); }
#labels { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.label { position: absolute; left: 0; top: 0; font: 600 15px/1 'Display', system-ui, sans-serif; letter-spacing: -0.01em; white-space: nowrap;
  padding: 5px 9px; border-radius: 6px; background: color-mix(in srgb, var(--bg) 70%, transparent); pointer-events: auto; cursor: pointer; will-change: transform; }
.label span { color: var(--mute); font: 400 11px 'UI', monospace; margin-left: 6px; }

#tip { position: fixed; left: 0; top: 0; padding: 6px 9px; border-radius: 6px; background: var(--ink); color: var(--bg); pointer-events: none; white-space: nowrap; z-index: 6; }
#tip b { font-weight: 400; opacity: .6; margin-left: 8px; }

#panel { position: fixed; top: 0; right: 0; bottom: 0; width: var(--panel-w); max-width: 100vw; padding: 16px 20px 28px; overflow-y: auto; z-index: 8;
  background: color-mix(in srgb, var(--bg) 94%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-left: 1px solid var(--dim); }
#panel[hidden] { display: none; }
.bar { display: flex; align-items: center; gap: 6px; margin-bottom: 14px; }
.rank { flex: 1; color: var(--mute); text-align: center; }
.icon { width: 34px; height: 34px; border-radius: 8px; border: 1px solid var(--dim); background: none; cursor: pointer; }
.icon:hover { border-color: var(--mute); }
#p-name { font: 650 26px/1.1 'Display', system-ui, sans-serif; letter-spacing: -0.02em; margin: 0 0 6px; overflow-wrap: anywhere; }
#p-name span { color: var(--mute); font-weight: 400; }
.meta { margin: 0 0 14px; color: var(--mute); }
.meta i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 6px; }
.player { position: relative; aspect-ratio: 16 / 9; border-radius: 10px; overflow: hidden; background: var(--dim); margin-bottom: 14px; }
.player video { width: 100%; height: 100%; display: block; background: #000; }
.player video[hidden] { display: none; }
#p-novideo { position: absolute; inset: 0; display: grid; place-items: center; margin: 0; color: var(--mute); }
#p-novideo[hidden] { display: none; }
.desc { margin: 0 0 12px; font-size: 14px; }
.links { display: flex; gap: 16px; margin: 14px 0 22px; }
.links a { color: var(--accent); text-decoration: none; }
.links a:hover { text-decoration: underline; }
h3 { font: 400 11px 'UI', monospace; text-transform: uppercase; letter-spacing: .08em; color: var(--mute); margin: 0 0 8px; }
.related { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.related li { display: flex; gap: 10px; align-items: center; padding: 5px; border-radius: 8px; cursor: pointer; }
.related li:hover { background: var(--dim); }
.related .s { color: var(--mute); font-size: 11px; }

#loading { position: fixed; inset: 0; display: grid; place-items: center; background: var(--bg); color: var(--mute); z-index: 20; transition: opacity .5s; }
#loading.done { opacity: 0; pointer-events: none; }

body.open #search { right: calc(var(--panel-w) + var(--gut)); }
body.open #hint { display: none; }
body.open #filters { right: calc(var(--panel-w) + var(--gut)); }
@media (max-width: 1180px) { body.open #head { display: none; } }

@media (max-width: 760px) {
  :root { --gut: 14px; }
  #head { top: 64px; }
  #subtitle { font-size: 12px; }
  #search { width: calc(100vw - 2 * var(--gut)); }
  #filters { right: var(--gut); }
  #clusters { flex-wrap: nowrap; overflow-x: auto; scrollbar-width: none; }
  #hint { display: none; }
  #panel { top: auto; height: 68vh; width: 100vw; border-left: 0; border-top: 1px solid var(--dim); border-radius: 16px 16px 0 0; }
  body.open #search, body.open #filters { right: var(--gut); }
  body.open #filters, body.open #head { display: none; }
}
.papers { list-style: none; margin: 0 0 4px; padding: 0; display: grid; gap: 6px; }
.papers li { font-size: 13px; line-height: 1.35; }
.papers a { color: var(--ink); text-decoration: none; border-bottom: 1px solid var(--dim); }
.papers a:hover { color: var(--accent); border-color: var(--accent); }
.badge { display: inline-block; margin-left: 6px; padding: 1px 7px; border: 1px solid var(--accent); border-radius: 999px; color: var(--accent); font-size: 11px; }