:root{--accent: #007aff;--accent-hover: #1a8cff;--ink: #1d1d1f;--ink-2: #6e6e73;--hairline: rgba(0, 0, 0, .08);--glass: rgba(255, 255, 255, .72);--bg: #f2f2f7;font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,SF Pro Text,Helvetica Neue,Arial,PingFang SC,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;height:100%;overflow:hidden;overscroll-behavior:none}body{color:var(--ink);background:var(--bg)}#app{height:100dvh;display:flex;flex-direction:column;overflow:hidden}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.stage{position:relative;flex:1;display:none;align-items:center;justify-content:center;overflow:hidden;background:var(--bg)}.stage.play{display:flex}#board{border-radius:20px;box-shadow:0 1px 2px #0000000a,0 18px 50px -12px #00000029;touch-action:none;cursor:crosshair;background:#f2f2f7}.toolbar{position:absolute;top:16px;left:50%;transform:translate(-50%);display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:999px;background:var(--glass);-webkit-backdrop-filter:blur(22px) saturate(1.4);backdrop-filter:blur(22px) saturate(1.4);border:1px solid var(--hairline);box-shadow:0 8px 28px #0000001a;z-index:5;max-width:calc(100vw - 24px)}.tb-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;color:#636366;font:inherit;font-size:13px;font-weight:500;line-height:1;padding:9px 13px;border-radius:999px;cursor:pointer;white-space:nowrap;display:inline-flex;align-items:center;justify-content:center;transition:background .15s ease,color .15s ease,transform .1s 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ease}.ring-text{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;font-size:9.5px;font-weight:600;color:var(--ink-2);font-variant-numeric:tabular-nums}.ring.done .ring-text{color:var(--accent)}.landing{position:fixed;top:0;right:0;bottom:0;left:0;z-index:10;display:flex;align-items:center;justify-content:center;padding:24px;background:radial-gradient(900px 500px at 20% 10%,rgba(0,122,255,.08),transparent 60%),radial-gradient(800px 500px at 85% 85%,rgba(90,200,250,.08),transparent 60%),var(--bg);transition:opacity .35s ease,visibility .35s}.landing.hide{opacity:0;visibility:hidden;pointer-events:none}.landing-card{max-width:560px;width:100%;text-align:center;padding:56px 48px 40px;border-radius:32px;background:var(--glass);-webkit-backdrop-filter:blur(30px) saturate(1.5);backdrop-filter:blur(30px) saturate(1.5);border:1px solid rgba(255,255,255,.7);box-shadow:0 1px #fffc inset,0 24px 70px -18px #00000029;animation:pop-in .75s cubic-bezier(.34,1.56,.64,1) both}@keyframes pop-in{0%{opacity:0;transform:translateY(34px) scale(.92)}to{opacity:1;transform:translateY(0) scale(1)}}.landing-title{margin:0;font-size:52px;font-weight:800;letter-spacing:-.02em;background:linear-gradient(120deg,#1d1d1f 30%,var(--accent) 75%);-webkit-background-clip:text;background-clip:text;color:transparent}.landing-tagline{margin:14px 0 0;font-size:17px;color:var(--ink-2);letter-spacing:.02em}.landing-actions{margin-top:34px}.btn-primary{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;cursor:pointer;font:inherit;font-size:16px;font-weight:600;color:#fff;background:var(--accent);padding:15px 40px;border-radius:999px;box-shadow:0 10px 24px -8px #007aff80;transition:transform .12s ease,box-shadow .2s ease,background .15s ease}.btn-primary:hover{background:var(--accent-hover);box-shadow:0 14px 30px -8px #007aff99}.btn-primary:active{transform:scale(.96)}.landing-divider{margin:30px 0 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#00000029;opacity:0;visibility:hidden;pointer-events:none;z-index:30;transition:opacity .18s ease-out,transform .18s ease-out,visibility 0s linear .18s}.filters-pop.open{opacity:1;visibility:visible;pointer-events:auto;transform:translate(-50%) translateY(0) scale(1);transition-delay:0s}.fp-item{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;font:inherit;font-size:14px;color:var(--ink);width:100%;min-height:44px;padding:8px 12px;border-radius:12px;display:flex;align-items:center;gap:10px;cursor:pointer;text-align:left;transition:background .15s ease}.fp-item:hover{background:#0000000d}.fp-item .icon{width:18px;height:18px;color:var(--ink-2);flex:none;transition:color .15s ease}.fp-label{flex:1}.fp-item .fp-check{width:16px;height:16px;color:var(--accent);opacity:0;transition:opacity .15s ease}.fp-item.active .icon{color:var(--accent)}.fp-item.active 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0;-webkit-user-select:none;user-select:none;-webkit-user-drag:none;pointer-events:none}.crop-grid{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;pointer-events:none}.crop-grid path{stroke:#ffffff8c;stroke-width:1;fill:none}.crop-grid rect{stroke:#ffffffe6;stroke-width:2;fill:none}.crop-bottom{padding-top:12px;padding-bottom:max(12px,env(safe-area-inset-bottom));padding-left:8px;padding-right:8px;border-top:1px solid var(--hairline)}.crop-btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;background:transparent;color:var(--accent);font:inherit;font-size:16px;padding:10px 14px;min-height:44px;min-width:64px;border-radius:999px;cursor:pointer;transition:background .15s ease}.crop-btn:hover{background:#007aff14}.crop-choose{font-weight:600}.crop-zoom{display:flex;align-items:center;gap:10px;flex:1;max-width:280px;color:var(--ink-2)}.crop-zoom svg{width:16px;height:16px;flex:none}.crop-zoom input[type=range]{flex:1;accent-color:var(--accent);height:44px;cursor:pointer}