*{box-sizing:border-box}
body{margin:0;font:15px/1.5 "Segoe UI",Tahoma,Arial,sans-serif;background:#f5f5f6;color:#1d1d1f}
a{color:#a3121a}
.top{display:flex;align-items:center;gap:24px;padding:10px 24px;background:#fff;border-bottom:3px solid var(--accent);flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#1d1d1f;font-weight:700;font-size:18px}
.brand img{height:36px}.brand small{display:block;font-weight:400;font-size:12px;color:#6b6f78}
nav{display:flex;gap:6px;flex:1}nav a{padding:6px 12px;border-radius:6px;text-decoration:none;color:#1d1d1f}
nav a.on,nav a:hover{background:#fbe7e8}.who{font-size:13px;color:#6b6f78}
.ruo{background:#fff4d6;color:#6a4a00;text-align:center;padding:4px;font-size:12.5px;border-bottom:1px solid #eedc9f}
main{max-width:1400px;margin:0 auto;padding:18px 24px 60px}
h1{font-size:22px;margin:6px 0 14px}h2{font-size:16px;margin:0 0 10px}
.muted{color:#6b6f78;font-size:13px}.err{color:#b3382c}.small{font-size:12px}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.between{justify-content:space-between}.center-row{justify-content:center}
.card{background:#fff;border:1px solid #e2e2e6;border-radius:8px;padding:14px 16px;margin-bottom:14px}
.card.narrow{max-width:420px;margin:60px auto}.center{text-align:center}
.btn{font:inherit;padding:6px 14px;border:1px solid #c8c8ce;background:#fff;border-radius:6px;cursor:pointer;text-decoration:none;color:#1d1d1f;display:inline-block}
.btn:hover{background:#f6f6f8}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{filter:brightness(.93)}
.btn.danger{color:#b3382c;border-color:#e2b3ad}.btn:disabled{opacity:.45;cursor:not-allowed}.btn.small{padding:1px 10px;font-size:13px}
input[type=search],input[type=text],.fld input{font:inherit;padding:6px 10px;border:1px solid #c8c8ce;border-radius:6px;background:#fff;width:100%}
.fld{display:block;margin:12px 0}.fld span{display:block;font-size:12px;color:#6b6f78;margin-bottom:2px}
.code,.codein{font-size:34px;letter-spacing:.3em;font-weight:700;color:#a3121a;margin:6px 0;text-align:center}
.codein{width:7em;font-family:inherit;padding:4px 8px;border:1px solid #c8c8ce;border-radius:6px;margin:10px 0}
.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#2e7d4f;color:#fff;padding:9px 18px;border-radius:8px;z-index:20}.toast.bad{background:#b3382c}
[hidden]{display:none!important}
.warnline{color:#8a5a00;background:#fff6dd;border-radius:5px;padding:6px 10px;margin:6px 0;font-size:13px}

/* home */
.grid-home{display:grid;grid-template-columns:minmax(320px,440px) 1fr;gap:16px;align-items:start}
@media (max-width:900px){.grid-home{grid-template-columns:1fr}}
.drop{border:2px dashed #c8c8ce;border-radius:8px;padding:22px 14px;text-align:center;background:#fafafb}
.drop.over{border-color:var(--accent);background:#fdf1f1}.drop .row{margin:10px 0 4px}
.quality{border:1px solid #e2e2e6;border-radius:6px;margin:0 0 14px;padding:8px 12px}.quality label{display:block;margin:3px 0}
.quality label.off{opacity:.45}
.progress{flex:1;min-width:120px;height:8px;background:#eee;border-radius:4px;overflow:hidden}.progress div{height:100%;width:0;background:var(--accent);transition:width .2s}
.studies{display:flex;flex-direction:column}
.st{display:grid;grid-template-columns:1fr auto;gap:4px 12px;padding:10px 4px;border-bottom:1px solid #eee;text-decoration:none;color:inherit}
.st:hover{background:#fafafb}.st b{font-weight:600}.st .meta{font-size:12.5px;color:#6b6f78}
.pill{display:inline-block;padding:1px 9px;border-radius:10px;font-size:12px;background:#ececf0;white-space:nowrap}
.pill.done{background:#d7eedf;color:#1e5b38}.pill.running{background:#d6e4f6;color:#1f4f8a}.pill.queued{background:#ececf0;color:#444}.pill.failed{background:#f4d4d0;color:#8a2a20}

/* study */
.spinner{width:38px;height:38px;margin:10px auto;border:4px solid #eee;border-top-color:var(--accent);border-radius:50%;animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.viewer-wrap{display:grid;grid-template-columns:1fr 360px;gap:16px;align-items:start}
@media (max-width:1000px){.viewer-wrap{grid-template-columns:1fr}}
.viewer{background:#fff;border:1px solid #e2e2e6;border-radius:8px;padding:10px 12px}
.toolbar{margin-bottom:8px;gap:14px}
.seg-ctl{display:inline-flex;border:1px solid #c8c8ce;border-radius:6px;overflow:hidden}
.tab{font:inherit;font-size:13px;border:0;border-right:1px solid #c8c8ce;background:#fff;padding:4px 12px;cursor:pointer}.tab:last-child{border-right:0}
.tab.on{background:var(--accent);color:#fff}
.stage{position:relative;background:#000;border-radius:6px;display:flex;align-items:center;justify-content:center;height:min(72vh,760px);overflow:hidden;cursor:crosshair}
.stage canvas{image-rendering:auto;max-width:100%;max-height:100%}
.hover{position:absolute;pointer-events:none;background:#000c;color:#fff;font-size:13px;padding:3px 8px;border-radius:4px;white-space:nowrap}
.orient span{position:absolute;color:#ffd166;font:600 13px monospace;text-shadow:0 0 3px #000}
#o-top{top:6px;left:50%}#o-bottom{bottom:6px;left:50%}#o-left{left:8px;top:50%}#o-right{right:8px;top:50%}
.slider-row{margin-top:8px}.slider-row input{flex:1}
.structs{max-height:calc(72vh + 120px);display:flex;flex-direction:column;margin:0}
.structs input[type=search]{margin-bottom:8px}
#structs{overflow:auto;flex:1}
.grp{margin:8px 0 2px;display:flex;align-items:center;gap:6px;font-weight:600;font-size:13px;color:#444;position:sticky;top:0;background:#fff;padding:3px 0}
.it{display:grid;grid-template-columns:auto 14px 1fr auto;gap:6px;align-items:center;padding:3px 4px;border-radius:4px;font-size:13.5px;cursor:pointer}
.it:hover,.it.hl{background:#fdf1f1}.it .sw{width:14px;height:14px;border-radius:3px}
.it .v{font-variant-numeric:tabular-nums;color:#555;font-size:12.5px;text-align:end}
.it .cut{color:#b07a00;font-size:11px;margin-left:4px}