:root{
  --bg:#e8ecf1; --surface:#fff; --ink:#121b27; --muted:#5b6778; --line:#d3dae3; --soft:#f1f4f8;
  --accent:#2447f5; --accent-ink:#fff; --good:#0b8f6f; --bad:#c8372d;
  --font:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  color-scheme:light dark;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#10151d;--surface:#18202b;--ink:#e8edf4;--muted:#93a0b2;--line:#2a3544;--soft:#1f2937;--accent:#6c88ff;--accent-ink:#0b1020;--good:#3cc9a2;--bad:#ff7a6e}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 var(--font);letter-spacing:-.005em;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}
.top{max-width:1180px;margin:0 auto;padding:28px 20px 8px}
.top h1{margin:0;font-size:1.75rem;font-weight:750;letter-spacing:-.03em}
.top p{margin:4px 0 0;color:var(--muted);max-width:60ch}

.app{max-width:1180px;margin:0 auto;padding:16px 20px 120px;display:grid;grid-template-columns:minmax(280px,340px) 1fr;gap:24px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:4px 16px 12px;position:sticky;top:16px;max-height:calc(100vh - 32px);overflow:auto}
main{min-width:0}
@media (max-width:860px){
  .app{grid-template-columns:1fr;gap:16px}
  .panel{position:static;max-height:none;order:2}
  main{order:1}
}

details{border-bottom:1px solid var(--line);padding:12px 0}
details:last-of-type{border-bottom:0}
summary{cursor:pointer;font-weight:650;list-style:none;display:flex;justify-content:space-between;align-items:center;padding:4px 0}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--muted);font-weight:400;font-size:1.25rem;line-height:1}
details[open] summary::after{content:"–"}
details>*+*{margin-top:12px}

.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip input{position:absolute;opacity:0;pointer-events:none}
.chip span{display:inline-block;padding:7px 13px;border:1px solid var(--line);border-radius:999px;font-size:.9rem;cursor:pointer;background:var(--surface);user-select:none}
.chip input:checked+span{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.chip input:focus-visible+span{outline:2px solid var(--accent);outline-offset:2px}

.field{display:flex;flex-direction:column;gap:6px;font-size:.9rem;color:var(--muted)}
.field.inline{flex-direction:row;align-items:center;justify-content:space-between}
.field .row{display:flex;justify-content:space-between}
.field output{color:var(--ink);font-variant-numeric:tabular-nums;font-weight:600}
.dims{display:grid;grid-template-columns:1fr 1fr;gap:10px}
input[type=number],select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface);color:var(--ink);font:inherit}
input[type=range]{width:100%;accent-color:var(--accent);margin:0;height:28px}
input[type=color]{width:44px;height:30px;padding:0;border:1px solid var(--line);border-radius:8px;background:none}
.checks{display:grid;gap:8px}
.check{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;cursor:pointer}
.check input{margin:4px 0 0;accent-color:var(--accent);width:16px;height:16px;flex:none}
.hint{margin:0;font-size:.82rem;color:var(--muted)}
:disabled{opacity:.45}
.link{background:none;border:0;color:var(--muted);text-decoration:underline;font:inherit;font-size:.85rem;cursor:pointer;padding:12px 0 0}
[hidden]{display:none!important}

.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;min-height:168px;padding:24px;text-align:center;border:2px dashed var(--line);border-radius:18px;background:var(--surface);cursor:pointer;transition:border-color .15s,background .15s}
.drop input{position:absolute;width:1px;height:1px;opacity:0}
.drop strong{font-size:1.25rem;letter-spacing:-.02em}
.drop span{color:var(--muted)}
.drop small{color:var(--muted);margin-top:10px;font-size:.8rem}
.drop:hover,.drop.over,.drop:focus-within{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 6%,var(--surface))}

.list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}
.tile{display:grid;grid-template-columns:72px 1fr auto;gap:14px;align-items:center;padding:10px;background:var(--surface);border:1px solid var(--line);border-radius:14px}
.thumb{width:72px;height:72px;border-radius:10px;overflow:hidden;background:var(--soft)}
.thumb img{width:100%;height:100%;object-fit:cover;display:block}
.meta{min-width:0}
.name{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sub{font-size:.85rem;color:var(--muted);font-variant-numeric:tabular-nums}
.tile[data-state=error] .sub{color:var(--bad)}
.tile[data-state=working] .sub::before{content:"";display:inline-block;width:10px;height:10px;margin-right:6px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;vertical-align:-1px}
@keyframes spin{to{transform:rotate(360deg)}}
.save{margin-top:6px}
.track{height:6px;border-radius:3px;background:var(--soft);overflow:hidden}
.fill{height:100%;background:var(--good);border-radius:3px;transition:width .4s}
.fill.worse{background:var(--bad)}
.save .sub{display:flex;justify-content:space-between;gap:8px;margin-top:4px}
.save b{color:var(--good)}
.save b.worse{color:var(--bad)}
.act{display:flex;flex-direction:column;gap:6px}
.btn,.ghost,.primary{font:inherit;font-size:.9rem;border-radius:10px;padding:9px 14px;cursor:pointer;text-decoration:none;text-align:center;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:650}
.ghost:hover,.btn:hover{background:var(--soft)}
.x{border:0;background:none;color:var(--muted);cursor:pointer;font-size:.8rem;padding:2px}
button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.bar{position:sticky;bottom:calc(12px + env(safe-area-inset-bottom));margin-top:16px;display:flex;align-items:center;gap:8px;padding:10px 10px 10px 16px;background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 28px rgba(10,20,40,.16)}
.total{flex:1;font-size:.88rem;color:var(--muted);min-width:0}
.total b{color:var(--ink)}
@media (max-width:520px){
  .tile{grid-template-columns:56px 1fr;}
  .thumb{width:56px;height:56px}
  .act{grid-column:1/-1;flex-direction:row;justify-content:flex-end}
  .bar{flex-wrap:wrap}.total{flex-basis:100%}
  .bar .primary{flex:1}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

.top #install{margin-top:12px}
.top #iosHint{margin-top:10px}