:root{
  --bg:#faf9f7; --panel:#ffffff; --soft:#f2f0ec; --line:#e6e2dc; --text:#1f1e1c; --muted:#6f6b64;
  --accent:#c96442; --accent-soft:#f6e6df; --ok:#2f7d4f; --warn:#a86a12; --bad:#b3372f;
  --bar:#c96442; --shadow:0 1px 2px rgba(0,0,0,.04),0 4px 16px rgba(0,0,0,.04);
  --r:16px; font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#1c1b19; --panel:#262522; --soft:#2e2d29; --line:#3a3833; --text:#ecebe7; --muted:#a19d94;
  --accent:#e07a55; --accent-soft:#3a2a23; --bar:#e07a55; --shadow:none;}}
:root[data-theme="dark"]{--bg:#1c1b19; --panel:#262522; --soft:#2e2d29; --line:#3a3833; --text:#ecebe7; --muted:#a19d94;
  --accent:#e07a55; --accent-soft:#3a2a23; --bar:#e07a55; --shadow:none;}
*{box-sizing:border-box} html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5;display:flex;flex-direction:column}
button{font:inherit;color:inherit;cursor:pointer}
header{position:sticky;top:0;z-index:5;display:flex;align-items:center;gap:10px;padding:10px 16px;
  background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(8px);border-bottom:1px solid transparent}
.brand{display:flex;align-items:center;gap:8px;font-weight:600}
.dot{width:22px;height:22px;border-radius:50%;background:var(--accent);display:grid;place-items:center}
.dot::after{content:"";width:8px;height:8px;border-radius:50%;background:#fff}
.spacer{flex:1}
.picker{position:relative}
.picker>button{display:flex;align-items:center;gap:6px;border:1px solid var(--line);background:var(--panel);
  padding:6px 12px;border-radius:999px;font-size:14px}
.menu{position:absolute;right:0;top:calc(100% + 6px);width:min(320px,calc(100vw - 32px));background:var(--panel);
  border:1px solid var(--line);border-radius:14px;box-shadow:0 8px 30px rgba(0,0,0,.12);padding:6px;display:none}
.menu.open{display:block}
.menu button{display:block;width:100%;text-align:left;border:0;background:none;padding:9px 10px;border-radius:10px}
.menu button:hover,.menu button.sel{background:var(--soft)}
.menu small{display:block;color:var(--muted);font-size:12.5px}
.iconbtn{border:1px solid var(--line);background:var(--panel);border-radius:999px;padding:6px 12px;font-size:14px}
main{flex:1;width:100%;max-width:780px;margin:0 auto;padding:8px 16px 160px}
.hero{text-align:center;margin:12vh auto 0;max-width:560px}
.hero h1{font-family:ui-serif,Georgia,serif;font-weight:500;font-size:clamp(26px,5vw,36px);margin:0 0 6px}
.hero p{color:var(--muted);margin:0 0 22px}
.samples{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px}
.sample{border:1px solid var(--line);background:var(--panel);border-radius:14px;padding:12px;text-align:left;font-size:14px}
.sample:hover{border-color:var(--accent)}
.sample b{display:block;font-weight:600}
.sample span{color:var(--muted);font-size:13px}
.msg{margin:22px 0;animation:in .25s ease}
@keyframes in{from{opacity:0;transform:translateY(4px)}}
.user{display:flex;justify-content:flex-end}
.user img{max-width:min(260px,70%);border-radius:14px;border:1px solid var(--line)}
.bot{display:flex;gap:12px}
.bot .dot{flex:0 0 22px;margin-top:2px}
.body{flex:1;min-width:0}
.title{font-family:ui-serif,Georgia,serif;font-size:22px;line-height:1.25;margin:0 0 4px}
.sub{color:var(--muted);font-size:14px;margin-bottom:12px}
.canvaswrap{position:relative;border-radius:14px;overflow:hidden;border:1px solid var(--line);background:var(--soft)}
.canvaswrap canvas{display:block;width:100%;height:auto}
.badge{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;padding:3px 9px;border-radius:999px;background:var(--soft);color:var(--muted);margin:0 6px 6px 0}
.badge.ok{color:var(--ok)} .badge.warn{color:var(--warn);background:color-mix(in srgb,var(--warn) 12%,transparent)}
.badge.bad{color:var(--bad);background:color-mix(in srgb,var(--bad) 10%,transparent)}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;margin-top:12px;box-shadow:var(--shadow)}
.card h3{margin:0 0 10px;font-size:13px;font-weight:600;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}
.row{display:grid;grid-template-columns:minmax(0,1fr) 56px;gap:4px 10px;align-items:center;margin:8px 0}
.row .n{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .v{font-variant-numeric:tabular-nums;text-align:right;font-size:13.5px;color:var(--muted)}
.track{grid-column:1/-1;height:6px;border-radius:99px;background:var(--soft);overflow:hidden}
.fill{height:100%;background:var(--bar);border-radius:99px;width:0;transition:width .6s ease}
.row.alt .fill{background:color-mix(in srgb,var(--bar) 45%,var(--soft))}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:10px}
.kv div{background:var(--soft);border-radius:12px;padding:8px 10px}
.kv small{display:block;color:var(--muted);font-size:12px}
.kv b{font-variant-numeric:tabular-nums;font-weight:600}
details{margin-top:12px} summary{cursor:pointer;color:var(--muted);font-size:14px;list-style:none}
summary::before{content:"▸ ";} details[open] summary::before{content:"▾ ";}
.stages{display:flex;gap:10px;overflow-x:auto;padding:10px 0 4px;scroll-snap-type:x mandatory}
.stage{flex:0 0 170px;scroll-snap-align:start}
.stage img{width:170px;height:120px;object-fit:cover;border-radius:10px;border:1px solid var(--line);background:var(--soft)}
.stage b{display:block;font-size:13px;margin-top:4px} .stage span{font-size:12px;color:var(--muted)}
.notice{border-radius:12px;padding:10px 12px;font-size:14px;margin-bottom:12px}
.notice.warn{background:color-mix(in srgb,var(--warn) 12%,transparent);color:var(--warn)}
.notice.bad{background:color-mix(in srgb,var(--bad) 10%,transparent);color:var(--bad)}
.typing{display:flex;align-items:center;gap:10px;color:var(--muted);font-size:14px}
.typing i{width:7px;height:7px;border-radius:50%;background:var(--muted);display:inline-block;animation:b 1s infinite}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes b{0%,80%,100%{opacity:.25}40%{opacity:1}}
.composer{position:fixed;left:0;right:0;bottom:0;padding:12px 16px calc(14px + env(safe-area-inset-bottom));
  background:linear-gradient(to top,var(--bg) 70%,transparent)}
.box{max-width:780px;margin:0 auto;background:var(--panel);border:1px solid var(--line);border-radius:22px;
  box-shadow:0 4px 24px rgba(0,0,0,.06);padding:10px 10px 10px 16px;display:flex;align-items:center;gap:10px}
.box.drag{border-color:var(--accent);background:var(--accent-soft)}
.box .hint{flex:1;color:var(--muted);font-size:15px;cursor:pointer;min-width:0}
.box .hint b{color:var(--text);font-weight:500}
.send{width:38px;height:38px;border-radius:50%;border:0;background:var(--accent);color:#fff;display:grid;place-items:center;flex:0 0 38px}
.send:disabled{opacity:.4;cursor:default}
.foot{max-width:780px;margin:6px auto 0;text-align:center;color:var(--muted);font-size:12px}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th,td{padding:7px 8px;border-bottom:1px solid var(--line);text-align:left;font-variant-numeric:tabular-nums}
th{color:var(--muted);font-weight:600;font-size:12.5px}
.tablewrap{overflow-x:auto}
.overlay{position:fixed;inset:0;background:rgba(0,0,0,.35);display:none;z-index:20;align-items:flex-end;justify-content:center}
.overlay.open{display:flex}
.sheet{background:var(--panel);width:100%;max-width:820px;max-height:86vh;overflow:auto;border-radius:20px 20px 0 0;padding:18px 18px 28px}
@media(min-width:700px){.overlay{align-items:center}.sheet{border-radius:20px}}
.sheet h2{font-family:ui-serif,Georgia,serif;font-weight:500;margin:0 0 4px}
.close{float:right;border:0;background:var(--soft);border-radius:999px;padding:4px 12px}
@media(max-width:520px){header .label{display:none} .title{font-size:19px}}
/* ---- in-browser loader ---- */
.loader{max-width:420px;margin:22px auto 0;text-align:left;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:12px 14px;font-size:13.5px;color:var(--muted)}
.loader .bar{height:6px;border-radius:99px;background:var(--soft);overflow:hidden;margin-top:8px}
.loader .bar i{display:block;height:100%;width:0;background:var(--accent);transition:width .2s}
.loader.done{display:none}
.privacy{color:var(--muted);font-size:12.5px;margin-top:14px}
/* ---- multi-vehicle list ---- */
details.veh{margin:0;border-top:1px solid var(--line)}
details.veh:first-of-type{border-top:0}
details.veh summary{display:flex;align-items:center;gap:10px;padding:9px 0;color:var(--text)}
details.veh summary::before{content:none}
.vnum{flex:0 0 22px;height:22px;border-radius:50%;color:#fff;font-size:12.5px;font-weight:700;display:grid;place-items:center}
.vname{flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:14px}
.vconf{font-variant-numeric:tabular-nums;font-size:13.5px;color:var(--muted)}
.vconf.low{color:var(--warn)}
.vtop{padding:0 0 10px 32px;font-size:13px;color:var(--muted)}
.vtop>div{display:flex;justify-content:space-between;gap:10px;padding:2px 0}
.vmeta{margin-top:4px;font-size:12px}