:root{--paper: #141416;--paper-2: #1c1e22;--paper-3: #2a2d34;--ink: #f2f3f5;--ink-soft: #9aa0aa;--accent: #e0453f;--accent-2: #4d8ada;--line: rgba(255, 255, 255, .14);--line-strong: rgba(255, 255, 255, .26);--glass: rgba(28, 30, 34, .7);--glass-solid: rgba(24, 26, 30, .95);--glass-blur: blur(20px) saturate(160%);--glass-btn: rgba(42, 45, 52, .75);--lift: 0 8px 24px rgba(0, 0, 0, .45);--lift-sm: 0 4px 12px rgba(0, 0, 0, .4);--lift-lg: 0 24px 64px rgba(0, 0, 0, .55);--press: 0 2px 6px rgba(0, 0, 0, .45);--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;--font-mono: "SF Mono", ui-monospace, "JetBrains Mono", Menlo, Consolas, monospace;--r: 10px;--r-panel: 16px;--r-pill: 999px;--safe-t: env(safe-area-inset-top, 0px);--safe-b: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;height:100%;overflow:hidden;overscroll-behavior:none}body{font-family:var(--font-sans);color:var(--ink);background:var(--paper);user-select:none;-webkit-user-select:none}#app{position:fixed;inset:0}#app:before{content:"";position:absolute;inset:0;background:var(--paper);z-index:0}#app:after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 50% 46%,transparent 42%,rgba(0,0,0,.55) 100%);z-index:1}#stage{position:absolute;inset:0;width:100%;height:100%;display:block;z-index:1;touch-action:none;cursor:grab}#stage:active{cursor:grabbing}.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}.hud{position:absolute;left:0;right:0;z-index:10;display:flex;align-items:center;gap:10px;padding:14px 16px;transition:opacity .32s ease,transform .32s ease;pointer-events:none}.hud>*{pointer-events:auto}.hud.is-hidden{opacity:0;transform:translateY(-8px);pointer-events:none}.hud .stat,.hud .top-tools,.hud .btn{transition:opacity .35s ease}.hud.is-idle .stat{opacity:.38}.hud.is-idle .stat.is-primary{opacity:.92}.hud.is-idle .top-tools{opacity:.42}.hud.is-idle .btn{opacity:.35}.hud .stat:hover,.hud .top-tools:hover,.hud .btn:hover,.hud .btn:focus-visible{opacity:1}#hud-top{top:calc(var(--safe-t) + 4px);justify-content:space-between;position:absolute}#hud-bottom{bottom:calc(var(--safe-b) + 8px);justify-content:center;flex-wrap:wrap}.stats{display:flex;gap:9px}.stat{display:flex;flex-direction:column;gap:2px;min-width:84px;padding:6px 12px;border-radius:var(--r);background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--line);box-shadow:var(--lift)}.stat-label{display:inline-flex;align-items:center;gap:4px;font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-soft)}.stat-label i{width:11px;height:11px;display:inline-flex;flex:none;opacity:.8}.stat-label i svg{width:100%;height:100%;display:block}.stat-value{font-size:17px;font-weight:600;font-family:var(--font-mono);font-variant-numeric:tabular-nums;color:var(--ink)}.stat-best .stat-value{color:var(--accent)}.field{display:inline-flex;align-items:center;gap:6px;padding:4px 6px 4px 12px;border-radius:999px;background:var(--paper-2);border:1.5px solid var(--paper-3);font-size:11px;letter-spacing:.1em;color:var(--ink-soft);transition:border-color .15s ease,background .15s ease}.field:hover{border-color:var(--ink-soft)}.field:focus-within{border-color:var(--accent-2)}.btn-speed{display:none;min-width:58px;font-variant-numeric:tabular-nums}.hud.is-demoing 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+ 8px);right:0;min-width:140px;display:flex;flex-direction:column;gap:2px;padding:5px;border-radius:14px;background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--line);box-shadow:0 12px 32px #0000008c;opacity:0;transform:translateY(-5px);pointer-events:none;transition:opacity .16s ease,transform .16s ease;z-index:20}.size-select.is-open .size-menu{opacity:1;transform:none;pointer-events:auto}.size-opt{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:7px 10px;border:0;border-radius:6px;background:transparent;color:var(--ink);font-size:13px;font-weight:600;font-family:var(--font-mono);text-align:left;cursor:pointer;transition:background .12s ease}.size-opt 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bottom,#0c0c0e14,#0c0c0e8c,#0c0c0ee0)}@media (max-height: 560px){#overlay-start{align-items:center}}.panel{position:relative;width:min(400px,100%);padding:26px 22px;border-radius:var(--r-panel);background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--line);box-shadow:var(--lift-lg);text-align:center;animation:pop .32s cubic-bezier(.2,1,.4,1)}.start-panel{width:min(620px,100%);padding:14px 22px 16px}.start-panel .btn.primary.block{min-height:48px;font-size:15px;font-weight:600;letter-spacing:.05em}@keyframes pop{0%{opacity:0;transform:translateY(12px) scale(.98)}to{opacity:1;transform:none}}.brand-mark{width:34px;height:34px;margin:0 auto 6px;color:var(--ink)}.brand-title{margin:0;font-family:var(--font-sans);font-size:30px;font-weight:700;letter-spacing:.22em;text-indent:.22em;color:var(--ink);text-shadow:2px 2px 0 rgba(224,69,63,.45)}.brand-tag{display:inline-block;margin-top:6px;padding:2px 10px;border:1px solid var(--line);border-radius:999px;font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;color:var(--ink)}.brand-sub{margin:8px 0 0;font-size:12px;color:var(--ink-soft)}.picker{margin:12px 0 10px}.picker-label{font-size:9.5px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:7px}.picker-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}@media (max-width: 480px){.picker-grid{grid-template-columns:repeat(3,1fr)}}.size-chip{padding:7px 4px;border-radius:var(--r);border:1px solid var(--line);background:var(--paper-2);color:var(--ink);font-size:13px;font-weight:600;font-family:var(--font-mono);cursor:pointer;box-shadow:var(--lift-sm);transition:transform .1s ease,box-shadow .1s ease,background .16s ease}.size-chip small{display:none}.size-chip:hover{background:var(--paper-3)}.size-chip.is-active{background:var(--ink);color:var(--paper-2);box-shadow:var(--lift-sm)}.size-chip.is-active 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bounce{0%{transform:scale(.24);opacity:0}62%{transform:scale(1.12);opacity:1}to{transform:scale(1)}}.win-title{margin:12px 0 4px;font-family:var(--font-sans);font-size:24px;font-weight:700;letter-spacing:.08em}.win-time{font-family:var(--font-mono);font-size:40px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--ink);text-shadow:2px 2px 0 rgba(224,69,63,.35);margin:6px 0 12px}.win-meta{display:flex;justify-content:center;gap:16px;flex-wrap:wrap;font-size:13px;color:var(--ink-soft);margin-bottom:20px}.win-meta b{color:var(--ink);font-weight:600;font-family:var(--font-mono)}.win-best{color:var(--accent)}.win-panel.is-demo .win-emoji{color:var(--accent-2)}.win-panel.is-demo .win-time{font-size:30px;letter-spacing:.14em}.win-panel.is-demo .win-best{color:var(--ink-soft)}.panel-close{position:absolute;top:8px;right:8px;display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;padding:0;border:0;border-radius:999px;background:transparent;color:var(--ink-soft);cursor:pointer;transition:background .15s ease,color .15s ease}.panel-close:hover{background:var(--paper-3);color:var(--ink)}.panel-close .ico{width:15px;height:15px}.win-hint{display:none;margin:-6px 0 18px;font-size:12.5px;line-height:1.6;color:var(--ink-soft)}.win-panel.is-demo .win-hint{display:block}.win-actions{display:flex;gap:10px}.win-actions .btn{flex:1}.help-panel{text-align:left;max-height:84vh;overflow-y:auto}.help-panel::-webkit-scrollbar{width:7px}.help-panel::-webkit-scrollbar-thumb{background:var(--ink-soft);border-radius:4px}.help-panel h2{margin:0 0 14px;font-family:var(--font-sans);font-size:22px;text-align:center;font-weight:700}.help-panel h3{margin:18px 0 8px;font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--accent);font-weight:600}.help-panel ul{margin:0;padding-left:17px;font-size:13px;line-height:1.9;color:var(--ink-soft)}.help-panel code{padding:1px 6px;border-radius:3px;background:var(--paper-3);border:1.5px solid var(--ink);color:var(--ink);font-family:var(--font-mono);font-size:12px}.help-body{margin-bottom:18px}.toast{position:absolute;left:50%;bottom:calc(var(--safe-b) + 92px);transform:translate(-50%,12px);z-index:40;padding:9px 17px;border-radius:999px;background:var(--glass);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);border:1px solid var(--line);box-shadow:var(--lift);font-size:13px;font-weight:500;color:var(--ink);opacity:0;pointer-events:none;transition:opacity .26s ease,transform .26s ease;white-space:nowrap}.toast.is-show{opacity:1;transform:translate(-50%)}@media (max-width: 560px){.stat{min-width:68px;padding:5px 9px;box-shadow:var(--lift-sm)}.stat-value{font-size:15px}.brand-title{font-size:31px}.brand-mark{width:34px;height:34px}#hud-bottom{gap:7px;padding:10px}.btn{min-height:42px;padding:0 12px;font-size:13px}.btn .txt{display:none}.btn{width:46px;padding:0}.win-time{font-size:32px}.toast{font-size:12px;padding:8px 14px}}@media (max-height: 520px){.picker{margin:14px 0 10px}.tip{display:none}}@media (max-width: 820px),(pointer: coarse){.panel,.stat,.size-menu,.toast{background:var(--glass-solid);backdrop-filter:none;-webkit-backdrop-filter:none}}