:root{
  --bg:#f3f6f8; --card:#fff; --text:#17232e; --muted:#6c7d8c; --line:#e2e9ee;
  --primary:#0f766e; --primary-dark:#0b5e57; --ok:#15803d; --warn:#b45309;
  --danger:#c62828; --shadow:0 6px 24px rgba(18,45,60,.08);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}
body{
  background:var(--bg); color:var(--text); min-height:100vh;
  font:15px/1.5 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;
  padding-bottom:calc(24px + env(safe-area-inset-bottom));
}
.topbar{background:linear-gradient(135deg,#0f766e,#115e59);color:#fff;padding:calc(14px + env(safe-area-inset-top)) 16px 18px}
.topbar-row{max-width:560px;margin:0 auto;display:flex;align-items:center;gap:12px}
.logo{width:40px;height:40px;border-radius:12px;background:rgba(255,255,255,.18);display:grid;place-items:center;font-size:20px;font-weight:700;flex:none}
h1{font-size:17px;margin:0;font-weight:650;letter-spacing:.3px}
.sub{font-size:11.5px;opacity:.82;margin-top:2px;max-width:290px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.link-btn{margin-left:auto;flex:none;white-space:nowrap;color:#fff;border:1px solid rgba(255,255,255,.45);border-radius:20px;padding:5px 13px;font-size:12.5px;text-decoration:none}
.wrap{max-width:560px;margin:0 auto;padding:14px 14px 0}
.notice{background:#fff7e6;border:1px solid #fde3b0;color:#8a5a08;border-radius:10px;padding:9px 12px;font-size:12.5px;text-align:center;margin-bottom:12px}
.stage{position:relative;width:100%;aspect-ratio:3/4;max-height:56vh;background:#101a20;border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.stage video,.stage img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.stage img{display:none;object-fit:contain;background:#0b1318}
.stage.review img{display:block}
.stage.review video{visibility:hidden}
.frame{position:absolute;inset:12%;pointer-events:none}
.frame i{position:absolute;width:26px;height:26px;border:2px solid rgba(255,255,255,.85)}
.frame i:nth-child(1){top:0;left:0;border-right:0;border-bottom:0;border-radius:6px 0 0 0}
.frame i:nth-child(2){top:0;right:0;border-left:0;border-bottom:0;border-radius:0 6px 0 0}
.frame i:nth-child(3){bottom:0;left:0;border-right:0;border-top:0;border-radius:0 0 0 6px}
.frame i:nth-child(4){bottom:0;right:0;border-left:0;border-top:0;border-radius:0 0 6px 0}
.stage-hint{position:absolute;left:0;right:0;bottom:16px;text-align:center;color:rgba(255,255,255,.9);font-size:13px;text-shadow:0 1px 4px #000}
.stage.review .stage-hint,.stage.review .frame{display:none}
.stage-mask{position:absolute;inset:0;z-index:6;background:rgba(8,20,26,.62);display:flex;flex-direction:column;gap:12px;align-items:center;justify-content:center;color:#fff;font-size:14px}
.stage-mask[hidden]{display:none}
.spinner{width:32px;height:32px;border:3px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.crop-layer{position:absolute;z-index:4;touch-action:none;user-select:none;-webkit-user-select:none;overflow:hidden}
.crop-layer[hidden]{display:none}
.crop-box{position:absolute;border:2px solid #5eead4;background:rgba(20,184,166,.10);box-shadow:0 0 0 2000px rgba(5,16,22,.58);pointer-events:none}
.crop-box i{position:absolute;width:20px;height:20px;border:3px solid #fff;background:#0f766e;border-radius:50%;box-shadow:0 1px 6px rgba(0,0,0,.5)}
.crop-box i[data-c=nw]{left:-12px;top:-12px}
.crop-box i[data-c=ne]{right:-12px;top:-12px}
.crop-box i[data-c=sw]{left:-12px;bottom:-12px}
.crop-box i[data-c=se]{right:-12px;bottom:-12px}
.crop-box[hidden]{display:none}
.crop-empty{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);display:flex;flex-direction:column;align-items:center;gap:8px;background:rgba(5,18,24,.76);color:#fff;padding:12px 18px;border-radius:12px;font-size:13px;white-space:nowrap;pointer-events:none}
.crop-empty[hidden]{display:none}
.crop-empty button{pointer-events:auto;border:1px solid rgba(255,255,255,.6);background:rgba(255,255,255,.14);color:#fff;border-radius:18px;padding:5px 14px;font-size:12.5px;cursor:pointer}
.crop-tip{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:4px 10px;background:#e8f4f2;color:#0b5e57;border:1px solid #cbe9e4;border-radius:10px;padding:8px 12px;font-size:12.5px;line-height:1.4;margin:10px 0 0}
.crop-tip[hidden]{display:none}
.crop-tip-btns{display:flex;gap:14px;margin-left:auto}
.crop-tip button{flex:none;border:0;background:transparent;color:var(--primary);font-size:12.5px;font-weight:650;text-decoration:underline;padding:4px 2px;cursor:pointer}
.mode-tip{font-size:11.5px;color:var(--muted);text-align:center;margin:8px 4px 12px;min-height:16px;line-height:1.4}
.card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;box-shadow:var(--shadow);margin-bottom:12px}
.card-head{display:flex;justify-content:space-between;align-items:center;font-size:13px;font-weight:650;color:var(--muted);margin-bottom:10px}
.badge{background:#e8f4f2;color:var(--primary);font-size:11px;font-weight:600;border-radius:20px;padding:3px 10px}
.value-row{display:flex;align-items:center;gap:10px;border-bottom:2px solid var(--primary);padding-bottom:4px}
.value-row input{flex:1;min-width:0;border:0;outline:0;font-size:42px;font-weight:700;color:var(--primary-dark);letter-spacing:1px;background:transparent;font-variant-numeric:tabular-nums}
.value-row .unit{font-size:20px;color:var(--muted);font-weight:600;flex:none;cursor:pointer;border-bottom:1px dashed var(--line);padding:0 2px}
.tip-line{font-size:11.5px;color:var(--muted);margin-top:6px}
.tip-line.warn{color:var(--warn);font-weight:600}
.candidates{display:flex;flex-wrap:wrap;gap:7px;margin-top:10px}
.candidates button{border:1px solid var(--line);background:#f7fafb;color:var(--text);border-radius:18px;padding:5px 12px;font-size:13px;font-variant-numeric:tabular-nums}
.candidates button:active{background:var(--primary);color:#fff}
.raw{margin-top:12px;border-top:1px dashed var(--line);padding-top:9px;font-size:12px;color:var(--muted)}
.raw summary{cursor:pointer;outline:0}
.raw-text{word-break:break-all;margin-top:8px;line-height:1.6;max-height:90px;overflow:auto}
.wm-preview{margin-top:8px;background:#0e1b22;color:#e7f3f1;border-radius:8px;padding:8px 10px;font-size:11.5px;line-height:1.7}
.remark{display:flex;align-items:center;gap:10px;margin-top:12px;font-size:13px;color:var(--muted)}
.remark input{flex:1;min-width:0;border:1px solid var(--line);border-radius:8px;padding:9px 10px;font-size:14px;outline:0}
.remark input:focus{border-color:var(--primary)}
.actions{display:flex;gap:10px;margin-bottom:14px}
.btn{flex:1;min-height:52px;border:0;border-radius:12px;font-size:16px;font-weight:650;color:#fff;background:var(--primary);box-shadow:0 4px 12px rgba(15,118,110,.22)}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.55;box-shadow:none}
.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line);box-shadow:none}
.btn.success{background:var(--ok);box-shadow:0 4px 12px rgba(21,128,61,.2)}
.btn[hidden]{display:none}
.history .hitem{display:flex;justify-content:space-between;align-items:center;padding:9px 0;border-bottom:1px solid var(--line);font-size:13px}
.history .hitem:last-child{border-bottom:0}
.history .hitem b{font-size:17px;color:var(--primary-dark);font-variant-numeric:tabular-nums}
.history .hitem small{color:var(--muted);font-size:11px}
.foot{text-align:center;color:var(--muted);font-size:11.5px;margin:16px 0 8px}
.toast{position:fixed;left:50%;bottom:calc(30px + env(safe-area-inset-bottom));transform:translate(-50%,20px);background:#17232e;color:#fff;padding:11px 20px;border-radius:24px;font-size:14px;opacity:0;pointer-events:none;transition:.22s;z-index:99;max-width:88vw;text-align:center;box-shadow:0 8px 24px rgba(0,0,0,.25)}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast.err{background:#b3261e}
.toast.ok{background:#146c43}
@media(min-width:600px){.stage{aspect-ratio:4/3;max-height:52vh}}