/* Xiutu MVP redesign v1 — tokens first, no raw hex below :root except canvas-adjacent UI */
:root{
  --color-bg:#F7F4F0; --color-surface:#FFFFFF; --color-surface-2:#EFE9E2; --color-surface-3:#E4DCD2;
  --color-canvas-well:#171412; --color-ink:#201A17; --color-ink-2:#57504A; --color-ink-3:#6E665E;
  --color-border:#DCD2C6; --color-border-strong:#A89A8B;
  --color-primary:#9E2B3A; --color-primary-strong:#82222F; --color-primary-soft:#F9E8EA;
  --color-success:#146C43; --color-success-soft:#E3F2E8;
  --color-warning:#8A5A00; --color-warning-soft:#FFF3D1; --color-warning-border:#D9A62E;
  --color-danger:#B42318; --color-danger-soft:#FDECEA;
  --color-focus:#175CD3; --color-disabled:#8A8178; --color-scrim:rgba(23,20,18,.52);
  --color-face-selected:#FFD166; --color-face-idle:rgba(255,255,255,.92);
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:20px; --space-6:24px; --space-8:32px;
  --radius-sm:8px; --radius-md:12px; --radius-lg:16px; --radius-full:999px;
  --shadow-card:0 1px 2px rgba(32,26,23,.06),0 4px 14px rgba(32,26,23,.06);
  --shadow-panel:0 -8px 28px rgba(32,26,23,.16); --shadow-pop:0 8px 24px rgba(32,26,23,.20);
  --tap-min:48px; --sheet-collapsed:148px; --sheet-half:46dvh; --sheet-full:78dvh;
}
*{box-sizing:border-box}
body{margin:0 auto;max-width:1100px;padding:var(--space-4);padding-bottom:calc(96px + env(safe-area-inset-bottom,0px));color:var(--color-ink);background:var(--color-bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.55}
header{position:sticky;top:0;z-index:30;background:var(--color-bg);padding-top:var(--space-2)}
header h1{font-size:1.5rem;font-weight:700;line-height:1.25;margin:0 0 var(--space-1)}
header p{color:var(--color-ink-2);margin:0 0 var(--space-3);font-size:.9rem;white-space:normal;overflow-wrap:anywhere}
section h2{font-size:1.25rem;font-weight:700;margin:var(--space-4) 0 var(--space-2)}
nav{display:flex;gap:var(--space-1);background:var(--color-surface-2);border-radius:var(--radius-md);padding:var(--space-1)}
.tab{flex:1;min-height:44px;border:0;background:transparent;color:var(--color-ink-2);border-radius:var(--radius-sm);font-weight:600}
.tab.active{background:var(--color-surface);color:var(--color-ink);box-shadow:var(--shadow-card)}
button{min-height:var(--tap-min);padding:10px 16px;border:1px solid var(--color-border-strong);background:var(--color-surface);color:var(--color-ink);border-radius:var(--radius-md);font-size:15px;font-weight:600;cursor:pointer;transition:background 120ms ease,opacity 120ms ease}
button:active{background:var(--color-surface-2)}
button:disabled{opacity:.45;cursor:not-allowed;color:var(--color-disabled)}
.primary-btn,#exportPng{background:var(--color-primary);border-color:var(--color-primary);color:var(--color-surface);min-height:52px}
.primary-btn:active,#exportPng:active{background:var(--color-primary-strong)}
.btn-secondary{background:var(--color-surface);border:1px solid var(--color-border-strong);color:var(--color-ink)}
.danger-btn,#confirmOk{background:var(--color-danger);border-color:var(--color-danger);color:var(--color-surface);min-height:52px}
.text-link{min-height:var(--tap-min);padding:12px 8px;border:0;background:none;color:var(--color-primary);text-decoration:underline;text-underline-offset:3px;font-size:14px}
:focus-visible{outline:2px solid var(--color-focus);outline-offset:2px}
.row{display:flex;gap:var(--space-2);flex-wrap:wrap;align-items:center;margin:var(--space-2) 0}
.box{display:flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:96px;border:2px dashed var(--color-border-strong);border-radius:var(--radius-lg);background:var(--color-surface);padding:var(--space-4);cursor:pointer;text-align:center}
.empty{padding:var(--space-6);border:1px solid var(--color-border);border-radius:var(--radius-lg);color:var(--color-ink-2);background:var(--color-surface);text-align:center;white-space:normal;overflow-wrap:anywhere}
.warn{background:var(--color-warning-soft);border:1px solid var(--color-warning-border);color:var(--color-warning);border-radius:var(--radius-md);padding:var(--space-3);margin:var(--space-2) 0}
.hint{color:var(--color-ink-2);font-size:.88rem;white-space:normal;overflow-wrap:anywhere;line-height:1.5}
fieldset{border:0;padding:0;margin:var(--space-3) 0;min-width:0}
legend{font-weight:600;padding:0;margin-bottom:var(--space-2)}
label{white-space:normal;overflow-wrap:anywhere}
input[type=range]{--p:0%;flex:1 1 auto;min-width:0;width:auto;height:48px;padding:12px 10px;box-sizing:border-box;appearance:none;-webkit-appearance:none;background:transparent;touch-action:none;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:var(--radius-full);background:linear-gradient(to right,var(--color-primary) var(--p),var(--color-surface-3) var(--p))}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;margin-top:-11px;border-radius:50%;background:var(--color-surface);border:2px solid var(--color-primary);box-shadow:0 2px 8px rgba(32,26,23,.25)}
input[type=range]::-moz-range-track{height:6px;border-radius:var(--radius-full);background:var(--color-surface-3)}
input[type=range]::-moz-range-progress{height:6px;border-radius:var(--radius-full);background:var(--color-primary)}
input[type=range]::-moz-range-thumb{width:26px;height:26px;border-radius:50%;background:var(--color-surface);border:2px solid var(--color-primary);box-shadow:0 2px 8px rgba(32,26,23,.25)}
input[type=range]:disabled{opacity:.45;cursor:not-allowed}
input[type=range]:disabled::-webkit-slider-thumb{border-color:var(--color-disabled)}
.range-bidirectional{background-image:linear-gradient(var(--color-border-strong),var(--color-border-strong));background-size:2px 12px;background-position:center;background-repeat:no-repeat}
input[type=checkbox]{width:26px;height:26px;accent-color:var(--color-primary);flex:none}
select{min-height:var(--tap-min);border:1px solid var(--color-border-strong);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-ink);padding:8px}
canvas#preview{max-width:100%;max-height:52dvh;width:auto;height:auto;display:block;margin:0 auto;background:var(--color-canvas-well);border-radius:var(--radius-md)}
.canvasWrap{position:sticky;top:132px;z-index:5;background:var(--color-bg);padding-bottom:var(--space-2)}
.canvasStage{position:relative;background:var(--color-canvas-well);border-radius:var(--radius-lg);padding:var(--space-2)}
.canvas-toolbar{position:relative;z-index:6}
.detect-bar{display:flex;gap:var(--space-2);align-items:center;min-height:44px;padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-left:4px solid var(--color-border-strong);border-radius:var(--radius-md);background:var(--color-surface);font-weight:600;margin:var(--space-2) 0}
.detect-bar.is-ok{border-left-color:var(--color-success);background:var(--color-success-soft)}
.detect-bar.is-warn{border-left-color:var(--color-warning-border);background:var(--color-warning-soft);color:var(--color-warning)}
.face-card{display:flex;gap:var(--space-3);align-items:center;background:var(--color-surface);border:1px solid var(--color-border);border-left:4px solid var(--color-success);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:var(--space-3) var(--space-4);margin:var(--space-2) 0}
.face-card.is-warn{background:var(--color-warning-soft);border-left-color:var(--color-warning-border)}
.face-card canvas{width:64px;height:64px;border-radius:var(--radius-md);flex:none}
.face-select-layer{position:absolute;inset:var(--space-2);pointer-events:none}
.face-box{position:absolute;pointer-events:auto;background:rgba(255,209,102,.08);border:2px solid var(--color-face-idle);box-shadow:0 0 0 1px rgba(23,20,18,.65);color:var(--color-surface);border-radius:var(--radius-sm);font-weight:700;padding:0;min-height:0}
.face-box.is-selected{border:3px solid var(--color-face-selected);background:rgba(255,209,102,.10)}
.auto-badge{position:absolute;left:var(--space-4);top:var(--space-4);background:rgba(23,20,18,.85);color:var(--color-surface);border-radius:var(--radius-full);padding:6px 12px;font-size:13px;z-index:4}
.auto-panel-bar{display:flex;gap:var(--space-2);align-items:center;justify-content:space-between;background:var(--color-primary-soft);border:1px solid var(--color-primary);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3);margin:var(--space-2) 0}
.compare-toggle{display:inline-flex;gap:var(--space-2);align-items:center;min-height:var(--tap-min);padding:6px 10px;border:1px solid var(--color-border);border-radius:var(--radius-full);background:var(--color-surface)}
.compare-toggle.is-on{background:var(--color-primary-soft);border-color:var(--color-primary)}
.state-badge{background:var(--color-primary);color:var(--color-surface);border-radius:var(--radius-full);padding:2px 8px;font-size:11px}
#holdOriginal.is-pressed{background:var(--color-ink);color:var(--color-surface)}
#paramsFieldset.is-detecting input,#paramsFieldset.is-none input{opacity:.45}
#paramsFieldset.is-locked [data-param],#paramsFieldset.is-locked #master{opacity:.45}
#sliders>div{padding:var(--space-1) 0}
.item-note{color:var(--color-warning);font-size:12px;margin:2px 0 6px 34px;white-space:normal;overflow-wrap:anywhere}
.manual-banner{padding:var(--space-2) var(--space-3);border:1px solid var(--color-warning-border);background:var(--color-warning-soft);border-radius:var(--radius-sm);color:var(--color-warning);font-weight:600}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:var(--space-3)}
.card{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-card);padding:var(--space-3)}
.card img{width:100%;height:auto;border-radius:var(--radius-sm);display:block}
.danger{border:1px solid var(--color-danger);background:var(--color-danger-soft);border-radius:var(--radius-md);padding:var(--space-3);margin-top:var(--space-8)}
.danger button{background:var(--color-surface);color:var(--color-danger);border-color:var(--color-danger)}
/* bottom param sheet (mobile-first) */
.param-sheet{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);padding:0 var(--space-4) var(--space-3);margin:var(--space-3) 0}
.sheet-handle-row{display:flex;align-items:center;gap:var(--space-2)}
.sheet-handle{flex:1;display:flex;align-items:center;justify-content:center;min-height:28px;cursor:pointer}
.sheet-grip{width:40px;height:5px;border-radius:var(--radius-full);background:var(--color-border-strong);display:block}
.master-row{display:flex;align-items:center;gap:var(--space-2);font-weight:600}
.master-row span,.style-slider-row span,[data-val]{font-variant-numeric:tabular-nums;font-weight:600;font-size:14px}
/* style page */
.example-notice{display:flex;gap:var(--space-2);align-items:flex-start;color:var(--color-ink-2);background:var(--color-surface-2);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-3);margin:var(--space-2) 0;font-size:.9rem}
.notice-close{min-height:var(--tap-min);min-width:var(--tap-min);padding:0 8px;border:0;background:none;color:var(--color-ink-2);font-size:20px}
.example-badge{background:var(--color-warning-soft);border:1px solid var(--color-warning-border);color:var(--color-warning);border-radius:var(--radius-full);padding:2px 10px;font-size:12px;font-weight:600}
.style-head{display:flex;gap:var(--space-3);align-items:flex-start;flex-wrap:wrap}
#styleOverview{font-size:1rem;font-weight:600;color:var(--color-ink);flex:1 1 260px;white-space:normal;overflow-wrap:anywhere;line-height:1.55;margin:var(--space-2) 0}
.style-top-links{display:flex;gap:var(--space-2);flex-wrap:wrap}
#styleBody{padding-bottom:88px}
#styleCards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--space-3);align-items:stretch;margin:var(--space-3) 0}
.style-card{border:1px solid var(--color-border);border-radius:var(--radius-lg);background:var(--color-surface);box-shadow:var(--shadow-card);padding:var(--space-4);display:flex;flex-direction:column;height:100%}
.style-card.is-core{border:2px solid var(--color-primary);box-shadow:var(--shadow-pop)}
.style-card.is-off{opacity:.65}
.style-card-head{display:flex;gap:var(--space-2);align-items:baseline;flex-wrap:wrap;margin:0 0 var(--space-1)}
.core-tag{background:var(--color-primary);color:var(--color-surface);border-radius:var(--radius-full);padding:2px 8px;font-size:11px}
.conf-mark{color:var(--color-ink-2);font-size:12px;border:1px solid var(--color-border);border-radius:var(--radius-full);padding:2px 8px}
.conf-mark.conf-low,.conf-low{color:var(--color-warning);border-color:var(--color-warning-border);background:var(--color-warning-soft)}
.edited-badge{background:var(--color-primary-soft);color:var(--color-primary);border-radius:var(--radius-full);padding:2px 8px;font-size:11px}
.style-conclusion{margin:var(--space-2) 0;white-space:normal;overflow-wrap:anywhere;line-height:1.55;font-weight:600}
.style-slider-row{display:flex;align-items:center;gap:var(--space-2);flex-wrap:nowrap;margin:var(--space-2) 0;padding:0 10px;overflow:visible}
.style-fallback{color:var(--color-ink-3);font-size:12px;white-space:normal;overflow-wrap:anywhere}
.style-why{margin-top:auto;padding-top:var(--space-2)}
.style-why summary{cursor:pointer;color:var(--color-primary);font-size:.9em;padding:var(--space-1) 0;min-height:36px}
.style-compare{display:flex;gap:var(--space-2)}
.swatch{flex:1;text-align:center;padding:var(--space-4) var(--space-2);border-radius:var(--radius-sm);border:1px solid var(--color-border);font-size:12px;color:var(--color-ink-2)}
.sw-before{background:#D8D2C9}.sw-after{background:#E9E4DC}
.eye-btn{display:inline-flex;gap:var(--space-2);align-items:center}
.style-more{border:0;background:none;padding:0;margin:var(--space-4) 0 0}
.style-more-title{margin:0 0 var(--space-1);font-size:1em}
.style-secondary-item{border:1px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-surface);margin:var(--space-2) 0;padding:var(--space-2) var(--space-3)}
.style-secondary-line{display:flex;gap:var(--space-2);align-items:baseline;flex-wrap:wrap;cursor:pointer;padding:var(--space-1) 0;overflow-wrap:anywhere;white-space:normal}
.style-secondary-name{font-weight:700;flex:none}
.style-secondary-conclusion{color:var(--color-ink-2)}
.style-secondary-body{padding-top:var(--space-2)}
.style-confirm-bar{position:sticky;bottom:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);background:var(--color-surface);border-top:1px solid var(--color-border);box-shadow:0 -2px 8px rgba(32,26,23,.08);padding:var(--space-3) var(--space-1) calc(var(--space-3) + env(safe-area-inset-bottom,0px))}
.style-edited-count{color:var(--color-ink-2);font-size:.9em;white-space:nowrap}
.modal{position:fixed;inset:0;z-index:60;display:flex;align-items:center;justify-content:center;background:var(--color-scrim);padding:var(--space-4)}
.modal[hidden]{display:none}
.modal-card{background:var(--color-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-pop);padding:var(--space-5);max-width:420px;width:100%}
#toast{position:fixed;left:50%;transform:translateX(-50%) translateY(8px);bottom:calc(var(--sheet-collapsed) + 16px + env(safe-area-inset-bottom,0px));z-index:70;background:var(--color-ink);color:var(--color-surface);border-radius:var(--radius-md);padding:var(--space-3) var(--space-4);opacity:0;pointer-events:none;transition:opacity 200ms ease,transform 200ms ease;max-width:min(92vw,480px);text-align:center}
#toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
#postExportTip{border:1px solid var(--color-border);background:var(--color-primary-soft);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3)}
.is-busy{opacity:.6;pointer-events:none}
@media (max-width:768px){
  body{padding:var(--space-3);padding-bottom:calc(var(--sheet-collapsed) + 24px + env(safe-area-inset-bottom,0px))}
  header p{display:none}
  .canvasWrap{top:96px}
  .param-sheet{position:fixed;left:0;right:0;bottom:0;z-index:40;margin:0;border-radius:16px 16px 0 0;box-shadow:var(--shadow-panel);padding:0 var(--space-4) calc(var(--space-2) + env(safe-area-inset-bottom,0px));overflow:hidden auto;transition:height 260ms cubic-bezier(.2,.8,.2,1)}
  .param-sheet.is-collapsed{height:calc(var(--sheet-collapsed) + env(safe-area-inset-bottom,0px));overflow:hidden}
  .param-sheet.is-half{height:var(--sheet-half)}
  .param-sheet.is-full{height:var(--sheet-full)}
  .param-sheet.is-collapsed #manualMaskFieldset,.param-sheet.is-collapsed #faceCard,.param-sheet.is-collapsed #autoPanelBar,.param-sheet.is-collapsed #lightingStatus,.param-sheet.is-collapsed #sliders,.param-sheet.is-collapsed .history-row,.param-sheet.is-collapsed #postExportTip,.param-sheet.is-collapsed legend{display:none}
  .param-sheet.is-collapsed .export-row #exportJpg,.param-sheet.is-collapsed .export-row #shareBtn,.param-sheet.is-collapsed .export-row #exportNote{display:none}
  .param-sheet .export-row{flex-wrap:nowrap}
  canvas#preview{max-height:46dvh}
  .modal{align-items:flex-end;padding:0}
  .modal-card{border-radius:16px 16px 0 0;max-width:none}
}
@media (min-width:769px){
  /* Desktop: the sheet is an in-flow panel; state classes never hide controls. */
  .param-sheet.is-collapsed #faceCard,.param-sheet.is-collapsed #autoPanelBar,.param-sheet.is-collapsed #lightingStatus,.param-sheet.is-collapsed #sliders,.param-sheet.is-collapsed .history-row,.param-sheet.is-collapsed legend{display:block}
  .param-sheet.is-collapsed #sliders{display:block}
  .param-sheet.is-collapsed .export-row #exportJpg,.param-sheet.is-collapsed .export-row #shareBtn,.param-sheet.is-collapsed .export-row #exportNote{display:inline-flex}
}
@media (prefers-reduced-motion:reduce){
  .param-sheet{transition:none}
  #toast{transition:opacity 200ms ease}
  button{transition:none}
}

/* custom upload boxes: native file input hidden, token-styled drop area */
.upload-box{position:relative;flex-direction:column;gap:var(--space-1);flex:1 1 220px}
.upload-box .upload-title{font-weight:700;color:var(--color-primary);font-size:16px}
.upload-box .upload-state{color:var(--color-ink-2);font-size:13px}
.upload-box:focus-within{outline:2px solid var(--color-focus);outline-offset:2px}
.file-hidden{position:absolute;width:1px;height:1px;opacity:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}

.upload-primary{background:var(--color-primary);border:2px solid var(--color-primary)}
.upload-primary .upload-title{color:var(--color-surface);font-size:18px}
.upload-primary .upload-state{color:var(--color-primary-soft)}

/* ===== UI v2: one-screen editor, param rail, single active slider, photo gesture ===== */
.param-rail{display:flex;gap:8px;overflow-x:auto;padding:4px 16px;scrollbar-width:none;overscroll-behavior:contain}
.param-rail::-webkit-scrollbar{display:none}
.param-chip{position:relative;flex:0 0 76px;width:76px;height:48px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;border:1px solid var(--color-surface-3);border-radius:var(--radius-md);background:var(--color-surface);color:var(--color-ink);cursor:pointer}
.param-chip .chip-name{font-size:14px;line-height:1.15;white-space:nowrap}
.param-chip .chip-val{font-size:12px;line-height:1.1;color:var(--color-ink-2);font-variant-numeric:tabular-nums;min-height:13px}
.param-chip.is-active{background:var(--color-primary-soft);border:2px solid var(--color-primary)}
.param-chip.is-active .chip-name{font-weight:700;font-size:15px}
.param-chip.is-active::after{content:"";position:absolute;bottom:3px;left:50%;transform:translateX(-50%);width:24px;height:3px;border-radius:2px;background:var(--color-primary)}
.param-chip .chip-warn{position:absolute;top:-6px;right:-4px;color:var(--color-warning);font-size:12px;background:#FFF3D1;border:1px solid var(--color-warning);border-radius:999px;width:16px;height:16px;line-height:14px;text-align:center}
.param-chip.is-blocked{border-style:dashed}
.param-row[hidden]{display:none!important}
#sliders .param-row input[type=range]{height:56px}
#sliders .param-row input[type=range]::-webkit-slider-thumb{width:32px;height:32px}
#sliders .param-row input[type=range]::-moz-range-thumb{width:32px;height:32px}
.gesture-bubble{position:absolute;top:12px;left:50%;transform:translateX(-50%);z-index:6;background:rgba(23,20,18,.85);color:#fff;border-radius:999px;height:36px;line-height:36px;padding:0 16px;font-size:15px;font-variant-numeric:tabular-nums;pointer-events:none}
.canvasWrap{position:relative}
.canvasWrap .history-row{position:absolute;top:56px;right:8px;z-index:5;display:flex;gap:6px}
.canvasWrap .history-row button{min-height:40px;background:rgba(255,255,255,.92)}
.canvasWrap .auto-panel-bar{position:absolute;left:8px;right:8px;bottom:60px;z-index:5}
.profile-row{padding:0 4px}
@media (max-width:768px){
  body:has(#trialArea:not([hidden])){overflow:hidden;height:100dvh;overscroll-behavior:none}
  #tab-trial:has(#trialArea:not([hidden]))>*:not(#trialArea):not(#lightingBanner){display:none!important}
  #tab-trial:has(#trialArea:not([hidden])) #trialArea{display:flex;flex-direction:column;height:calc(100dvh - 118px);min-height:0}
  #tab-trial #trialArea .detect-bar{flex:0 0 48px;display:flex;align-items:center;margin:0}
  #tab-trial #trialArea .face-card{flex:0 0 auto;margin:0;border-radius:0;max-height:48px;overflow:hidden}
  #tab-trial #trialArea .face-card canvas{width:36px;height:36px}
  #tab-trial #trialArea #detectDetails{position:absolute;top:110px;left:12px;right:12px;z-index:8;background:var(--color-surface);border:1px solid var(--color-surface-3);border-radius:var(--radius-md);padding:8px;max-height:40%;overflow:auto}
  #tab-trial #trialArea .canvasWrap{flex:1 1 auto;min-height:200px;position:relative;top:auto;margin:0;display:flex;flex-direction:column}
  #tab-trial #trialArea .canvasStage{flex:1;min-height:0}
  #tab-trial #trialArea canvas#preview{max-height:100%;max-width:100%}
  #tab-trial #trialArea .compare-row{position:absolute;left:8px;right:8px;bottom:8px;z-index:5;background:rgba(255,255,255,.94);border-radius:var(--radius-md);padding:4px 8px;margin:0}
  #tab-trial #trialArea .hint{flex:0 0 auto}
  #tab-trial #trialArea .canvasWrap>.hint{display:none}
  #paramSheet{position:static;flex:0 0 auto;height:auto;max-height:none;overflow:visible;border-radius:0;box-shadow:none;padding:0 0 env(safe-area-inset-bottom)}
  #paramSheet .param-rail{flex:0 0 56px;align-items:center}
  #paramSheet #sliders .param-row{padding:2px 16px}
  #paramSheet .export-row{border-top:1px solid var(--color-surface-3);background:var(--color-surface-2);padding:6px 12px;flex-wrap:nowrap;overflow-x:auto}
  #paramSheet .export-row .master-row{flex:1 1 auto;margin:0}
  #paramSheet .profile-row{display:none}
  #paramSheet:has(#manualMaskFieldset:not([hidden])) #paramRail,
  #paramSheet:has(#manualMaskFieldset:not([hidden])) #paramsFieldset{display:none}
  #paramSheet #manualMaskFieldset{max-height:152px;overflow-y:auto;overscroll-behavior:contain;margin:0 12px}
  #toast{bottom:calc(210px + env(safe-area-inset-bottom))}
}

/* ===== UI v2.1 hotfix: editing shell truly one-screen, overlays de-stacked ===== */
#sliders .param-row label{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px}
#sliders .param-row label input[type=range]{flex:1 1 100%;order:3;width:100%}
#sliders .param-row label span[data-val]{margin-left:auto;font-variant-numeric:tabular-nums;font-weight:600}
@media (max-width:768px){
  body:has(#trialArea:not([hidden])){display:flex;flex-direction:column;height:100dvh}
  body:has(#trialArea:not([hidden])) header{flex:0 0 auto;padding:4px 10px}
  body:has(#trialArea:not([hidden])) header h1,body:has(#trialArea:not([hidden])) header p{display:none}
  body:has(#trialArea:not([hidden])) header nav{display:flex;gap:6px}
  body:has(#trialArea:not([hidden])) header nav .tab{flex:1;min-height:40px;padding:4px 2px;font-size:13px}
  body:has(#trialArea:not([hidden])) main{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;overflow:hidden}
  #tab-trial:has(#trialArea:not([hidden])){flex:1 1 auto;min-height:0;display:flex;flex-direction:column}
  #tab-trial:has(#trialArea:not([hidden])) #lightingBanner{flex:0 0 34px;display:flex;align-items:center;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:12px;padding:0 10px;margin:0 0 4px}
  #tab-trial:has(#trialArea:not([hidden])) #trialArea{flex:1 1 auto;height:auto;min-height:0}
  #tab-trial:has(#faceCard:not([hidden])) #detectBar{display:none}
  #tab-trial #trialArea .face-card{flex:0 0 44px;align-items:center;padding:2px 8px}
  #paramsFieldset legend,#lightingStatus{display:none}
  .canvasWrap .canvas-toolbar{position:absolute;top:8px;left:8px;z-index:5;margin:0;background:transparent}
  .canvasWrap .canvas-toolbar #autoRetouchState{display:none}
  .canvasWrap .history-row{top:8px;right:8px}
  .canvasStage .auto-badge{top:54px;left:8px}
  .gesture-bubble{top:96px}
  #tab-trial #trialArea .compare-row{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none}
  #tab-trial #trialArea .compare-row>*{flex:0 0 auto}
  #tab-trial #trialArea .compare-row #splitPos{width:84px}
  .canvasWrap .auto-panel-bar{bottom:62px;flex-wrap:nowrap}
  .canvasWrap .auto-panel-bar span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  #paramSheet .export-row .master-row{display:flex;align-items:center;gap:6px;white-space:nowrap}
  #paramSheet .export-row .master-row input{flex:1;min-width:60px}
  #paramSheet .export-row button{flex:0 0 auto;white-space:nowrap}
}

/* ===== UI v2.1 hotfix round 2: short screens + top clusters ===== */
@media (max-width:768px){
  #tab-trial #trialArea .canvasWrap{min-height:0}
  .canvasWrap .canvas-toolbar button{font-size:13px;padding:6px 8px;white-space:nowrap}
  .canvasWrap .history-row button{font-size:13px;padding:4px 8px;min-height:44px}
  .compare-row:has(#splitToggle:not(:checked)) #splitPos{display:none}
}
@media (max-width:768px) and (max-height:820px){
  body:has(#trialArea:not([hidden])) header nav .tab{min-height:34px;font-size:12px}
  #tab-trial:has(#trialArea:not([hidden])) #lightingBanner{flex-basis:30px}
  #tab-trial #trialArea .face-card{flex-basis:38px}
  #paramSheet .param-rail{flex-basis:50px}
  .param-chip{height:44px}
  #sliders .param-row input[type=range]{height:44px}
  #paramSheet .export-row{padding-top:4px;padding-bottom:4px}
}
@media (max-width:768px){ #paramSheet .export-row button{font-size:13px;padding:8px 10px} }

/* ===== UI v2.2 (UI walkthrough ruling): photo fixed on top, tools below canvas, params scroll ===== */
body:has(#trialArea:not([hidden])){display:block;height:auto;overflow:visible}
body:has(#trialArea:not([hidden])) main{display:block;overflow:visible;max-width:760px;margin:0 auto;width:100%}
#tab-trial:has(#trialArea:not([hidden])){display:block;height:auto}
#tab-trial:has(#trialArea:not([hidden])) #trialArea{display:block;height:auto;min-height:0}
#tab-trial:has(#trialArea:not([hidden])) #lightingBanner{display:none}
#tab-trial:has(#trialArea:not([hidden])) #detectBar,
#tab-trial:has(#trialArea:not([hidden])) .face-card{position:sticky;top:0;z-index:32;height:40px;max-height:40px;overflow:hidden;align-items:center}
#tab-trial #trialArea .canvasWrap{position:sticky;top:40px;z-index:30;display:flex;flex-direction:column;background:var(--color-bg);padding-bottom:6px;min-height:0}
#tab-trial #trialArea .canvasStage{order:1;flex:0 0 auto;height:min(40dvh,400px);min-height:210px}
#tab-trial #trialArea canvas#preview{max-width:100%;max-height:100%}
#tab-trial #trialArea .canvasWrap .auto-panel-bar{order:2;position:static;margin-top:6px}
#tab-trial #trialArea .canvasWrap .canvas-toolbar{order:3;position:static;margin-top:6px;background:var(--color-surface);border:1px solid var(--color-surface-3);border-radius:var(--radius-md);padding:4px 8px}
#tab-trial #trialArea .canvasWrap .canvas-toolbar #autoRetouchState{display:inline}
#tab-trial #trialArea .compare-row{order:4;position:static;margin-top:6px;background:var(--color-surface);border:1px solid var(--color-surface-3)}
#tab-trial #trialArea .canvasWrap .history-row{order:5;position:static;margin-top:6px;justify-content:flex-end}
.canvasStage .auto-badge{top:8px;left:8px}
.gesture-bubble{top:44px}
#sliders .param-row input[type=range]{min-height:48px}
#paramSheet{position:static;height:auto;overflow:visible}
.canvasStage .auto-badge{display:none}

/* ===== UI v2.3 final skeleton: fixed stage + fixed control deck, secondary scroll area ===== */
body:has(#trialArea:not([hidden])){display:flex;flex-direction:column;height:100dvh;overflow:hidden}
body:has(#trialArea:not([hidden])) header{display:none}
body:has(#trialArea:not([hidden])) main{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;overflow:hidden;max-width:760px}
#tab-trial:has(#trialArea:not([hidden])){flex:1 1 auto;min-height:0;display:flex;flex-direction:column}
#tab-trial:has(#trialArea:not([hidden])) #trialArea{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;height:auto}
#tab-trial:has(#trialArea:not([hidden])) #detectBar,
#tab-trial:has(#trialArea:not([hidden])) .face-card{position:static;flex:0 0 40px;height:40px;max-height:40px}
#tab-trial #trialArea .canvasWrap{position:static;flex:0 0 auto;display:flex;flex-direction:column;background:transparent;padding:0}
#tab-trial #trialArea .canvasStage{flex:0 0 auto;height:clamp(260px,44dvh,400px);min-height:260px}
#tab-trial #trialArea .compare-row{flex:0 0 44px;height:44px;align-items:center;flex-wrap:nowrap;overflow-x:auto;margin:0;border:none;border-radius:0}
#tab-trial #trialArea .compare-row>*{flex:0 0 auto}
#tab-trial #trialArea .canvasWrap .auto-panel-bar{position:static;flex:0 0 auto;margin:0}
#tab-trial #trialArea .canvasWrap>.hint{display:none}
#paramSheet{flex:1 1 auto;min-height:0;display:flex;flex-direction:column;position:static;overflow:hidden}
#paramSheet .param-rail{flex:0 0 52px;align-items:center}
#paramSheet #sliders{flex:0 0 56px}
#paramSheet #sliders .param-row{height:56px;padding:0 12px}
#paramSheet #sliders .param-row label{flex-wrap:nowrap;height:56px}
#paramSheet #sliders .param-row label input[type=range]{flex:1 1 auto;order:0;width:auto;min-width:70px}
#paramSheet .sheet-scroll{flex:1 1 auto;min-height:0;overflow-y:auto;overscroll-behavior:contain;border-top:1px solid var(--color-surface-3);padding:8px 12px}
#paramSheet .export-row{flex:0 0 auto;min-height:60px;padding-bottom:env(safe-area-inset-bottom);align-items:center}
#paramSheet.is-locked [data-param],#paramSheet.is-detecting input,#paramSheet.is-none input{opacity:.45}
#paramsFieldset legend{display:block}
#lightingStatus{display:block}
.gesture-bubble{height:auto;line-height:1.2;padding:7px 14px 9px;text-align:center}
.gesture-bubble i{display:block;height:3px;background:var(--color-primary);border-radius:2px;margin-top:5px;transition:width .05s linear}
@media (max-width:380px){ #paramSheet #sliders .param-row label{font-size:13px} }

/* v2.3 fix: editing shell is a full-viewport fixed layer, immune to ancestor sizing */
#tab-trial:has(#trialArea:not([hidden])){position:fixed;inset:0;z-index:20;background:var(--color-bg);overflow:hidden}

/* ===== UI v2.3.1: export/tool row fully in frame, no duplicate status rows ===== */
#paramSheet .export-row{flex-wrap:nowrap;gap:8px;padding-left:12px;padding-right:12px}
#paramSheet .export-row .master-row{flex:1 1 auto;min-width:0;white-space:nowrap}
#paramSheet .export-row .master-row input{flex:1 1 auto;min-width:48px}
#paramSheet .export-row #exportPng{flex:0 0 auto;white-space:nowrap;padding:10px 14px}
#paramSheet .export-row #exportNote{display:none}
#tab-trial #trialArea .compare-row{overflow:hidden;gap:4px;padding:0 6px;font-size:12px}
#tab-trial #trialArea .compare-row>*{flex:0 1 auto;min-width:0;white-space:nowrap}
#tab-trial #trialArea .compare-row button{padding:6px 5px;font-size:12px;white-space:nowrap}
#tab-trial #trialArea .compare-row .compare-toggle{gap:3px;padding:6px 3px;font-size:12px;white-space:nowrap}
#tab-trial #trialArea .compare-row #splitPos{width:48px;flex:0 0 48px}
.auto-panel-bar{display:none!important}
@media (max-width:400px){
 #tab-trial #trialArea .compare-row{gap:2px;padding:0 4px;font-size:11px}
 #tab-trial #trialArea .compare-row button{padding:5px 4px;font-size:11px}
 #tab-trial #trialArea .compare-row .compare-toggle{gap:2px;padding:4px 2px;font-size:11px}
 #tab-trial #trialArea .compare-row .compare-toggle input{width:14px;height:14px;flex:0 0 14px}
}

/* ===== v2.3.2 detecting guard + banner hidden fix ===== */
#lightingBanner[hidden]{display:none!important}
#paramSheet.is-detecting #paramRail,#paramSheet.is-detecting #sliders{pointer-events:none}
#tab-trial #trialArea .compare-row #undoBtn,#tab-trial #trialArea .compare-row #redoBtn{min-width:44px;flex:0 0 44px;text-align:center}

/* ===== v3 visual & motion (UI spec v1): ink + lime, chunky buttons, motion on transform/opacity only ===== */
[hidden]{display:none!important}
:root{
  --color-bg:#F7F5F0; --color-ink:#17151A; --color-ink-2:#5A5560; --color-ink-3:#6E6872;
  --color-surface:#FFFFFF; --color-surface-2:#ECE8E0; --color-surface-3:#E2DDD3;
  --color-border:#E2DDD3; --color-border-strong:#CFC8BC;
  --color-primary:#17151A; --color-primary-strong:#000; --color-primary-soft:#ECE8E0;
  --color-accent:#C8F03C; --color-canvas-well:#141216; --color-ok:#4E9A2E;
  --ease-spring:cubic-bezier(.34,1.4,.64,1); --ease-out:cubic-bezier(.2,.8,.2,1);
}
body{background:var(--color-bg)}
button{border:0;background:var(--color-surface-2);border-radius:18px;font-weight:800;color:var(--color-ink);transition:transform 200ms var(--ease-spring),opacity 150ms var(--ease-out),background 150ms var(--ease-out)}
button:active:not(:disabled),.cta-btn:active{transform:scale(.96);transition-duration:120ms}
.text-link{background:none;color:var(--color-ink);font-weight:600}
/* header / brand */
header{padding-top:4px}
.brand-row{display:flex;align-items:center;justify-content:space-between;min-height:48px}
.brand{background:none;padding:0 4px;min-height:44px;font-size:17px;font-weight:800}
.brand b{background:var(--color-accent);border-radius:8px;padding:1px 5px;margin-left:2px}
.icon-btn{min-width:44px;min-height:44px;padding:0;border-radius:14px;background:var(--color-surface-2);font-size:18px;line-height:1}
header>p{display:none}
#mainNav{margin:4px 0 8px}
/* home */
.home-hero{padding:4px 4px 0}
.hero-title{font-size:34px;line-height:1.18;font-weight:900;letter-spacing:-.5px;margin:8px 0 6px}
.hero-title mark{background:var(--color-accent);color:var(--color-ink);border-radius:10px;padding:0 6px}
.hero-sub{color:var(--color-ink-2);font-size:14px;margin:0 0 14px}
.hero-photo{position:relative;border-radius:24px;overflow:hidden;background:var(--color-canvas-well);aspect-ratio:1/1;max-height:42dvh;margin:0 auto}
.hero-photo img{width:100%;height:100%;object-fit:cover;display:block}
.hero-tag{position:absolute;left:12px;top:12px;background:rgba(20,18,22,.72);color:#fff;font-size:12px;border-radius:999px;padding:4px 10px}
.hero-split{position:absolute;top:0;bottom:0;left:50%;width:2px;background:rgba(255,255,255,.75);animation:xt-wiggle 1.4s var(--ease-out) .4s 1 both}
@keyframes xt-wiggle{0%{transform:translateX(0)}30%{transform:translateX(-18px)}65%{transform:translateX(14px)}100%{transform:translateX(0)}}
.home-cta{position:sticky;bottom:0;padding:14px 0 calc(8px + env(safe-area-inset-bottom,0px));background:linear-gradient(to top,var(--color-bg) 75%,transparent);display:flex;flex-direction:column;align-items:center;gap:2px;z-index:10}
.cta-btn,.upload-primary.cta-btn{display:flex;align-items:center;justify-content:center;width:100%;min-height:64px;border:0;border-radius:18px;background:var(--color-ink);cursor:pointer;transition:transform 200ms var(--ease-spring)}
.upload-primary.cta-btn .upload-title{color:var(--color-accent);font-size:19px;font-weight:900}
.home-cta .text-link{font-size:13px}
#tab-trial>.home-danger,#tab-trial>#status:empty{display:none}
/* edit: top bar */
#tab-trial #trialArea .detect-bar{border:0;border-radius:0;background:var(--color-bg);padding:0 8px;gap:6px;font-weight:800;font-size:14px;flex:0 0 52px!important;height:52px!important;max-height:52px!important}
#tab-trial #trialArea .detect-bar .icon-btn{flex:0 0 40px;min-width:40px;min-height:40px}
.mode-label{white-space:nowrap}
.status-dot{width:10px;height:10px;border-radius:50%;background:var(--color-border-strong);flex:0 0 10px}
.detect-bar.is-ok .status-dot{background:var(--color-ok)}
.detect-bar.is-ok #detectText{color:var(--color-ok)}
.detect-bar.is-warn .status-dot{background:#D9A62E}
.detect-bar.pop .status-dot{animation:xt-pop 300ms var(--ease-spring)}
@keyframes xt-pop{0%{transform:scale(1)}50%{transform:scale(1.3)}100%{transform:scale(1)}}
#detectText{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:0}
#tab-trial:has(#faceCard:not([hidden])) #detectBar{display:flex!important}
#tab-trial #trialArea .face-card{display:none!important}
/* edit: photo */
#tab-trial #trialArea .canvasStage{background:var(--color-canvas-well);border-radius:24px;margin:0 8px;padding:0;overflow:hidden;display:flex;align-items:center;justify-content:center}
#tab-trial #trialArea canvas#preview{border-radius:0;background:transparent}
.gesture-bubble{background:rgba(20,18,22,.88);border-radius:14px;font-weight:800;transition:opacity 200ms var(--ease-out)}
.gesture-bubble i{background:var(--color-accent)}
.scan-layer{position:absolute;inset:0;pointer-events:none;overflow:hidden;opacity:0;transition:opacity 200ms var(--ease-out)}
.scan-layer::after{content:"";position:absolute;top:0;bottom:0;left:0;width:40%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.18),transparent);transform:translateX(-100%)}
.canvasStage.is-scanning .scan-layer{opacity:1}
.canvasStage.is-scanning .scan-layer::after{animation:xt-scan 1.6s var(--ease-out) infinite}
@keyframes xt-scan{to{transform:translateX(260%)}}
.sweep-layer{position:absolute;pointer-events:none;overflow:hidden;display:none;z-index:4}
.sweep-layer.is-on{display:block}
.sweep-orig{position:absolute;inset:0;width:100%;height:100%}
.sweep-band{position:absolute;top:0;bottom:0;left:0;width:40px;background:linear-gradient(90deg,transparent,rgba(255,255,255,.55),transparent)}
/* edit: tool row */
#tab-trial #trialArea .compare-row{background:transparent!important;gap:6px!important;padding:6px 8px!important;flex:0 0 56px!important;height:56px!important;overflow-x:auto!important;scrollbar-width:none}
#tab-trial #trialArea .compare-row::-webkit-scrollbar{display:none}
#tab-trial #trialArea .compare-row>*{flex:0 0 auto!important}
#tab-trial #trialArea .compare-row button,#tab-trial #trialArea .compare-row .compare-toggle{min-height:44px;border:0;border-radius:16px;background:var(--color-surface-2);font-weight:800;font-size:13px!important;padding:0 12px!important}
#tab-trial #trialArea .compare-row #undoBtn,#tab-trial #trialArea .compare-row #redoBtn{min-width:44px;min-height:44px;flex:0 0 auto!important}
#holdOriginal.is-pressed{background:var(--color-ink)!important;color:var(--color-accent)!important}
.compare-toggle.is-on{background:var(--color-ink)!important;color:var(--color-accent)}
.state-badge{display:none}
/* edit: param chips */
#paramSheet{background:var(--color-bg)!important;border:0!important;box-shadow:none!important}
.param-rail{gap:8px;padding:4px 8px}
.param-chip{flex:0 0 auto;width:auto;min-width:64px;height:44px;padding:0 16px;border:0;border-radius:16px;background:var(--color-surface-2);flex-direction:row;gap:6px;white-space:nowrap;transition:background 240ms var(--ease-spring),color 240ms var(--ease-spring),transform 200ms var(--ease-spring)}
.param-chip .chip-name{font-weight:800;font-size:14px}
.param-chip .chip-val{display:none}
.param-chip.is-active{background:var(--color-ink);border:0;color:var(--color-accent)}
.param-chip.is-active .chip-name{color:var(--color-accent);font-size:14px}
.param-chip.is-active::after{display:none}
/* sliders: ink track, lime thumb */
input[type=range]::-webkit-slider-runnable-track{background:linear-gradient(to right,var(--color-ink) var(--p),var(--color-surface-3) var(--p))}
input[type=range]::-webkit-slider-thumb{background:var(--color-accent);border:3px solid var(--color-ink);box-shadow:none}
input[type=range]::-moz-range-progress{background:var(--color-ink)}
input[type=range]::-moz-range-thumb{background:var(--color-accent);border:3px solid var(--color-ink)}
#paramSheet #sliders .param-row label{font-weight:800}
/* bottom row */
#paramSheet .export-row{background:var(--color-bg)!important;border-top:1px solid var(--color-border)!important;position:relative}
#paramSheet .export-row #exportPng{background:var(--color-accent);color:var(--color-ink);border:0;border-radius:18px;min-height:52px;font-size:16px;font-weight:900;padding:0 20px!important}
#exportPng.is-saving{opacity:.75;background-image:linear-gradient(90deg,rgba(23,21,26,.25),rgba(23,21,26,.25));background-size:40% 3px;background-repeat:no-repeat;background-position:0 100%;animation:xt-save 1s linear infinite}
@keyframes xt-save{to{background-position:100% 100%}}
#exportPng.is-done{background:var(--color-ink)!important;color:var(--color-accent)!important}
.export-group .group-title{font-weight:800;margin:8px 0 0;font-size:14px}
/* export result card: rises above the bottom row, never over the photo */
#paramSheet{position:relative!important;overflow:visible!important}
.export-card{position:absolute;left:8px;right:8px;bottom:calc(68px + env(safe-area-inset-bottom,0px));z-index:12;display:flex;align-items:center;gap:8px;min-height:56px;padding:8px 8px 8px 14px;border-radius:22px;background:var(--color-ink);color:#fff;opacity:0;transform:translateY(16px);transition:transform 280ms var(--ease-spring),opacity 200ms var(--ease-out)}
.export-card.is-in{opacity:1;transform:translateY(0)}
.export-card .ec-text{flex:1 1 auto;min-width:0;display:flex;flex-direction:column}
.export-card .ec-text b{font-size:14px;white-space:normal}
.export-card .ec-text span{font-size:12px;opacity:.8;font-variant-numeric:tabular-nums}
.export-card .ec-actions{display:flex;gap:6px;align-items:center;flex:0 0 auto}
.export-card .ec-btn{min-height:40px;padding:0 12px;border-radius:14px;background:var(--color-accent);color:var(--color-ink);font-size:13px}
.export-card .ec-ghost{background:rgba(255,255,255,.14);color:#fff}
.export-card .ec-close{min-height:40px;min-width:40px;padding:0;background:transparent;color:#fff;font-size:18px}
.export-card.is-fail,.export-card.is-warn{background:var(--color-warning-soft);color:var(--color-warning);border:1px solid var(--color-warning-border)}
.export-card.is-fail .ec-close,.export-card.is-warn .ec-close{color:var(--color-warning)}
.export-card.is-warn .ec-ghost,.export-card.is-fail .ec-ghost{background:rgba(0,0,0,.06);color:var(--color-warning)}
#toast{background:var(--color-ink);border-radius:14px;font-weight:700}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important}
  button,.param-chip,.cta-btn{transition:opacity 150ms ease!important}
  button:active:not(:disabled),.cta-btn:active{transform:none}
  .export-card{transition:opacity 150ms ease;transform:none}
}
/* v3 polish: rail no tray, tool order, hidden native checkboxes */
#paramRail.param-rail{background:transparent;border-radius:0}
#tab-trial #trialArea .compare-row #holdOriginal{order:0}
#tab-trial #trialArea .compare-row #undoBtn{order:1}
#tab-trial #trialArea .compare-row #redoBtn{order:2}
#tab-trial #trialArea .compare-row #backOriginal{order:3}
#tab-trial #trialArea .compare-row #splitLabel{order:4}
#tab-trial #trialArea .compare-row #splitPos{order:5}
#tab-trial #trialArea .compare-row #faceOnlyLabel{order:6}
#tab-trial #trialArea .compare-row #rangeLabel{order:7}
#tab-trial #trialArea .compare-row .compare-toggle{position:relative;cursor:pointer}
#tab-trial #trialArea .compare-row .compare-toggle input{position:absolute;opacity:0;width:1px!important;height:1px!important;pointer-events:none}
.compare-toggle:has(input:checked){background:var(--color-ink)!important;color:var(--color-accent)}
.compare-toggle:has(input:focus-visible){outline:2px solid var(--color-focus);outline-offset:2px}
/* home hero without bundled photos: abstract before/after card */
.hero-photo.is-empty{background:radial-gradient(120% 80% at 50% 30%,#2A2630 0%,var(--color-canvas-well) 70%)}
.hero-tag-r{left:auto;right:12px}
.hero-face{position:absolute;left:50%;top:48%;width:44%;aspect-ratio:3/4;transform:translate(-50%,-50%);border-radius:50%;background:linear-gradient(90deg,#B98A72 0 50%,#D9AE95 50% 100%);box-shadow:0 30px 0 40px rgba(255,255,255,.04)}

/* v3.0.3 walkthrough fixes */
#tab-trial:has(#trialArea:not([hidden])) .home-hero,#tab-trial:has(#trialArea:not([hidden])) .home-cta{display:none!important}
.compare-extra{flex-wrap:wrap;gap:8px;padding:6px 12px}
.compare-extra #splitPos{accent-color:var(--color-border-strong)}
#paramSheet .export-row{max-width:640px;margin-left:auto;margin-right:auto;padding-right:max(12px,env(safe-area-inset-right));padding-bottom:calc(6px + env(safe-area-inset-bottom))}
#paramSheet .export-row #exportPng{margin-right:72px}
@media (max-width:480px){#paramSheet .export-row #exportPng{margin-right:56px}}
.compare-extra #splitPos{flex:0 1 160px;max-width:160px}
/* v3.0.5 识别中进度：白色低对比光带自上而下，1.6s 一轮，只动 transform */
.canvasStage.is-scanning .scan-layer::after{top:0;bottom:auto;left:0;right:0;width:auto;height:28%;background:linear-gradient(180deg,transparent,rgba(255,255,255,.25),transparent);transform:translateY(-100%);animation:xt-scan-v 1.6s linear infinite;will-change:transform}
@keyframes xt-scan-v{to{transform:translateY(360%)}}
.canvasStage:has(.sweep-layer.is-on) .scan-layer{opacity:0!important}
@media (prefers-reduced-motion:reduce){
  .canvasStage.is-scanning .scan-layer::after{animation:none;transform:none;opacity:0}
  .canvasStage.is-scanning .scan-layer{background:#000;animation:xt-breathe 1.6s ease-in-out infinite}
  @keyframes xt-breathe{0%,100%{opacity:0}50%{opacity:.12}}
}
/* v3.0.6 窄屏：工具行四键等分不溢出；底行给托管徽标让出底部空间 */
@media (max-width:480px){
  .compare-row{flex-wrap:nowrap;gap:6px}
  .compare-row>button{flex:1 1 0;min-width:0;padding:4px 4px;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  #paramSheet .export-row #exportPng{margin-right:0}
  #paramSheet{padding-bottom:72px}
}
@media (max-width:480px){
  .canvasWrap .row.compare-row{display:flex!important;flex-wrap:nowrap!important;gap:6px!important;overflow:visible!important}
  .canvasWrap .row.compare-row>button{flex:1 1 0!important;min-width:0!important;width:auto!important;padding:4px 2px!important;font-size:12px!important}
}
@media (max-width:480px){
  #tab-trial #trialArea .compare-row>*,#tab-trial #trialArea .compare-row #undoBtn,#tab-trial #trialArea .compare-row #redoBtn{flex:1 1 0!important;min-width:0!important;padding:0 4px!important;font-size:12px!important}
}
@media (max-width:480px){ #tab-trial #trialArea .compare-row{box-sizing:border-box!important;width:100%!important;max-width:100%!important;margin-left:0!important;margin-right:0!important;padding:0 8px!important} }
@media (max-width:480px){ #tab-trial #paramSheet{padding-bottom:calc(64px + env(safe-area-inset-bottom))!important} }

#holdOriginal{position:relative;overflow:visible!important}
.hold-hint{position:absolute;left:50%;bottom:calc(100% + 8px);transform:translateX(-50%);background:var(--color-ink);color:var(--color-surface);font-size:12px;font-weight:700;padding:6px 10px;border-radius:10px;white-space:nowrap;pointer-events:none;animation:xt-hint-in 200ms var(--ease-out) both;z-index:10}
@keyframes xt-hint-in{from{opacity:0;transform:translate(-50%,4px)}to{opacity:1;transform:translate(-50%,0)}}
@media (prefers-reduced-motion:reduce){.hold-hint{animation:none}}

.compare-extra #splitPos{accent-color:#17151A}
.compare-extra #splitPos::-webkit-slider-thumb{background:#17151A!important;border-color:#17151A!important}
.compare-extra #splitPos::-moz-range-thumb{background:#17151A!important;border-color:#17151A!important}
/* 托管徽标是 fixed 在视口底部的：窄屏编辑页整体给底部让出 64px，而不是给内部容器加 padding */
@media (max-width:480px){
  html.has-host-badge body:has(#trialArea:not([hidden])){height:calc(100dvh - 64px)!important;padding-bottom:0!important}
  #tab-trial #paramSheet{padding-bottom:env(safe-area-inset-bottom)!important}
}
/* v3.1.0: 没看到脸改窄条；照片区可压缩，滚动区保底 88px */
#tab-trial #trialArea #noFacePanel:not([hidden]){display:flex!important;align-items:center;gap:8px;height:44px;min-height:44px;padding:0 12px!important;margin:0!important;font-size:14px;flex:0 0 44px;box-sizing:border-box}
#tab-trial #trialArea #noFacePanel .row{margin:0 0 0 auto!important;gap:6px;flex-wrap:nowrap}
#tab-trial #trialArea #noFacePanel .row button{min-height:32px!important;padding:0 10px!important;font-size:13px}
#tab-trial #trialArea .canvasStage{height:clamp(220px,40dvh,400px)!important;min-height:220px!important;flex:0 1 auto!important}
#tab-trial #trialArea #sheetScroll{min-height:88px!important}
/* v3.1.1: 编辑页本身是 fixed inset:0，只缩 body 无效；直接让编辑层底边让出 64px */
@media (max-width:480px){ html.has-host-badge #tab-trial:has(#trialArea:not([hidden])){bottom:64px!important} }
/* v3.1.2 */
#detectBar.is-noface #detectText,#detectBar.is-noface .status-dot{display:none!important}
@media (max-width:480px){ html.has-host-badge #tab-trial #trialArea .canvasStage{height:clamp(220px,calc(40dvh - 64px),400px)!important} }

/* —— chat retouch panel (UI稿 48% sheet) —— */
.chat-fab{position:fixed;left:12px;bottom:72px;z-index:40;width:44px;height:44px;border:0;border-radius:50%;background:#17151A;color:#C8F03C;font-size:18px;box-shadow:0 4px 14px #0003;cursor:pointer}
.chat-tip{position:absolute;left:52px;bottom:6px;background:#17151A;color:#fff;font-size:12px;padding:6px 10px;border-radius:10px;white-space:nowrap;pointer-events:none}
#trialArea:not([hidden]) .chat-fab{display:grid;place-items:center}
.chat-fab[hidden],#trialArea[hidden] .chat-fab{display:none}
.chat-sheet{position:fixed;left:0;right:0;bottom:0;z-index:45;height:min(40dvh,320px);background:#fff;border-radius:18px 18px 0 0;box-shadow:0 -6px 24px #0002;display:flex;flex-direction:column;padding:6px 12px 10px}
.chat-sheet[hidden]{display:none}
.chat-grab{width:36px;height:4px;border-radius:2px;background:#ccc;margin:2px auto 8px}
.chat-msgs{flex:1;overflow:auto;display:flex;flex-direction:column;gap:8px;min-height:88px}
.chat-u{align-self:flex-end;background:#17151A;color:#fff;padding:7px 11px;border-radius:14px 14px 4px 14px;max-width:75%;font-size:14px}
.chat-a{align-self:flex-start;background:#f2efe9;padding:8px 11px;border-radius:14px 14px 14px 4px;max-width:85%;font-size:14px;color:#17151A}
.chat-d{font-size:11px;color:#8a8690;margin-top:4px}
.chat-acts{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.chat-acts button{font-weight:500;font-size:11px;background:#fff;border:1px solid #e6e2da;padding:3px 8px;border-radius:8px;cursor:pointer}
.chat-chips{display:flex;gap:6px;margin:6px 0;overflow:auto}
.chat-chip{flex:none;font-size:12px;border:1px solid #e6e2da;border-radius:14px;padding:4px 10px;background:#fff;cursor:pointer}
.chat-in{height:44px;display:flex;gap:8px;align-items:center;position:relative}
.chat-left{position:absolute;right:56px;top:-16px;font-size:11px;color:#8a8690}
.chat-left.is-warn{color:#E8862A}
.chat-in input{flex:1;height:40px;border:0;border-radius:12px;background:#f2efe9;padding:0 12px;font-size:14px}
.chat-send{width:40px;height:40px;border:0;border-radius:12px;background:#C8F03C;font-weight:700;cursor:pointer}
.chat-off{flex:1;height:40px;border-radius:12px;background:#ece8e0;color:#8a8690;display:flex;align-items:center;justify-content:center}
.chat-dots{display:flex;gap:4px;padding:4px 0}.chat-dots i{width:6px;height:6px;border-radius:50%;background:#8a8690;animation:chatblink 1.2s infinite}
.chat-dots i:nth-child(2){animation-delay:.2s}.chat-dots i:nth-child(3){animation-delay:.4s}
@keyframes chatblink{0%,80%,100%{opacity:.3}40%{opacity:1}}
.chat-mask{position:fixed;inset:0;z-index:50;background:#0006;display:flex;align-items:flex-end}
.chat-mask[hidden]{display:none}
.chat-consent{width:100%;background:#fff;border-radius:18px 18px 0 0;padding:20px 18px 18px}
.chat-consent h3{font-size:17px;margin:0 0 12px}.chat-consent p{margin:6px 0;font-size:13px}
.chat-consent a{display:block;font-size:12px;color:#8a8690;margin:10px 0 14px}
.chat-consent-btns{display:flex;gap:10px}
.chat-btn-g,.chat-btn-l{flex:1;height:44px;border:0;border-radius:14px;font-weight:600;cursor:pointer}
.chat-btn-g{background:#ece8e0}.chat-btn-l{background:#C8F03C}
.chat-settings-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 0;border-top:1px solid #e6e2da;margin-top:8px}
.chat-auth-label{font-size:13px;display:flex;align-items:center;gap:6px}
body.chat-open #tab-trial:has(#trialArea:not([hidden])) .canvasWrap .canvasStage{min-height:220px}
/* photo area keeps ≥220px when chat open; sheet is 48% overlay */

.chat-grab{cursor:pointer;padding:6px 0;background-clip:content-box;height:16px}
.chat-acts button{min-height:28px}
.chat-a{max-width:80%}
body.chat-kb .chat-chips{display:none}
body.chat-kb .chat-msgs{min-height:60px}

/* v316: UI 走查修正 */
.chat-sheet{height:48%;max-height:48dvh}
.chat-left[hidden]{display:none}
.chat-chip{height:32px;font-size:13px;padding:0 12px;display:inline-flex;align-items:center}
.chat-in input{height:44px;outline:none;border:1.5px solid transparent}
.chat-in input:focus{border-color:#4a4650;outline:none;box-shadow:none}
.chat-fail{display:flex;flex-wrap:wrap;align-items:center;gap:6px}
.chat-fail .chat-acts{display:inline-flex;margin:0}
.chat-fail .chat-acts button,.chat-acts button{height:28px;min-height:28px;padding:0 10px;font-size:12px}
body.chat-kb .chat-msgs>*:not(:nth-last-child(-n+2)){display:none}
body.chat-kb .chat-msgs{min-height:0}
body.chat-kb .chat-fab{display:none}
body.chat-kb #tab-trial .canvasStage{min-height:160px;max-height:calc(55dvh - 16px)}
body.chat-kb #detectBar,body.chat-kb #faceCard,body.chat-kb #lightingBanner{display:none!important}
body.chat-kb #preview{max-height:170px!important;width:auto!important;height:auto!important}
body.chat-kb #tab-trial .canvasStage{min-height:0;max-height:none}
body.chat-kb #tab-trial .canvasStage{height:auto!important;flex:none!important;padding:4px 0}
body.chat-kb #tab-trial #trialArea .canvasStage{height:180px!important;min-height:160px!important;flex:0 0 auto!important}
body.chat-kb #tab-trial #trialArea canvas#preview{max-height:176px!important}

/* v317 chat-kb.html 对齐 */
body.chat-kb #tab-trial #trialArea .canvasStage{height:160px!important;min-height:160px!important;max-height:160px!important;flex:0 0 auto!important;margin:0 8px!important}
body.chat-kb #tab-trial #trialArea canvas#preview{max-height:156px!important}
body.chat-kb #detectBar{display:flex!important;height:44px;min-height:44px}
body.chat-kb #faceCard,body.chat-kb #lightingBanner,body.chat-kb #noFacePanel,body.chat-kb .compare-row,body.chat-kb #paramSheet,body.chat-kb .chat-fab{display:none!important}
.chat-live-tag{position:fixed;right:20px;top:196px;z-index:46;font-size:11px;color:#fff;background:#0008;padding:2px 8px;border-radius:8px;pointer-events:none}
body:not(.chat-kb) .chat-live-tag{display:none!important}
.chat-fab.is-offline{position:relative}
.chat-fab.is-offline::after{content:"";position:absolute;top:4px;right:4px;width:8px;height:8px;border-radius:50%;background:#9a959e;border:1.5px solid #17151A}
.chat-fail .chat-acts button,.chat-acts button{height:24px!important;min-height:24px!important;line-height:22px;padding:0 8px;font-size:11px}
.chat-in input:disabled{opacity:.55;cursor:not-allowed}
.chat-send:disabled{opacity:.45}
body.chat-kb .chat-sheet{max-height:none!important;height:auto}

/* account */
.account-mask{position:fixed;inset:0;z-index:60;background:#0006;display:flex;align-items:flex-end}
.account-mask[hidden]{display:none}
.account-sheet{width:100%;max-height:92dvh;overflow:auto;background:#fff;border-radius:18px 18px 0 0;padding:0 0 calc(96px + env(safe-area-inset-bottom))}
.account-top{height:44px;display:flex;align-items:center;gap:8px;padding:0 12px;font-weight:600}
.account-back{width:32px;height:32px;border:0;border-radius:10px;background:#ebe7df;cursor:pointer}
.account-body{padding:8px 18px 0}.account-body h2{font-size:20px;margin:0 0 6px}
.account-sub{color:#8a8690;font-size:13px;margin:0 0 16px}
.account-field{width:100%;height:48px;border:0;border-radius:12px;background:#f2efe9;padding:0 14px;margin-bottom:10px;font-size:14px}
.account-prim{width:100%;height:44px;border:0;border-radius:14px;background:#C8F03C;font-weight:700;margin-top:8px;cursor:pointer}
.account-links{margin-top:14px}.account-text{border:0;background:none;color:#17151A;font-size:13px;text-decoration:underline;cursor:pointer;padding:0}
.account-err{color:#D94B4B;font-size:12px;margin:4px 0 8px}
.account-hint{font-size:12px;color:#8a8690;margin:0 0 8px}
.account-strength{display:flex;align-items:center;gap:8px;font-size:12px;color:#8a8690;margin:-2px 0 10px}
.account-strength i{width:8px;height:8px;border-radius:50%;background:#ccc}
.account-strength.lv0 i{background:#D94B4B}.account-strength.lv1 i{background:#E6B422}.account-strength.lv2 i{background:#3CB371}
.account-settings{border-top:1px solid #e6e2da;margin-top:8px;padding-top:4px}
.account-row{display:flex;align-items:center;gap:10px;padding:10px 0;font-size:13px}
.account-row em{flex:1;font-style:normal}
.account-mini{height:32px;padding:0 12px;border:0;border-radius:10px;background:#C8F03C;font-size:13px;font-weight:600;cursor:pointer}
.account-row.danger{border-top:1px solid #e6e2da}
.account-text.danger{color:#D94B4B}

/* face deform temp sliders */
.deform-sliders .is-deform-blocked{opacity:.45;}
.deform-sliders .deform-row{margin:4px 0;}

/* back to directory */
.home-tools{display:inline-flex;align-items:center;flex-shrink:0;min-height:44px;padding:10px 10px 10px 0;font-size:13px;line-height:1.2;color:#7A6E66;text-decoration:none}
.home-tools:active,.home-tools:hover{color:#2B2420}
@media(max-width:360px){
  .brand-row{flex-wrap:wrap;gap:0 8px}
  .home-tools{order:-1;width:100%;padding:4px 0 0;min-height:36px}
}