:root{--gold:#d8c39a;--gold-strong:#f1dcae;--ink:#f5efe6;--muted:#f5efe69e;--glass:#100c0e8c;--line:#d8c39a47;--danger:#ff4b3a;--ok:#5fe0a0;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Microsoft YaHei,Helvetica Neue,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{overscroll-behavior:none;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;background:#120d10;height:100%;margin:0;overflow:hidden}#app,#app canvas{touch-action:none;display:block;position:fixed;inset:0}.hidden{display:none!important}.mono{font-variant-numeric:tabular-nums;font-family:SF Mono,DIN Alternate,Roboto Mono,Menlo,monospace}.label{letter-spacing:.08em;color:var(--muted);font-size:12px}#hud{pointer-events:none;position:fixed;inset:0}.hud-top{top:calc(14px + env(safe-area-inset-top));justify-content:space-between;gap:10px;display:flex;position:absolute;left:14px;right:14px}.hud-chip{background:var(--glass);border:1px solid var(--line);-webkit-backdrop-filter:blur(10px);border-radius:12px;flex-direction:column;gap:2px;padding:8px 14px;display:flex}.hud-chip .value{color:var(--gold-strong);font-size:22px;font-weight:700}.speedo{left:50%;bottom:calc(18px + env(safe-area-inset-bottom));width:min(300px,62vw);position:absolute;transform:translate(-50%)}@media (max-width:560px){.speedo{left:calc(10px + env(safe-area-inset-left));width:52vw;transform:none}}.speedo-svg{width:100%;display:block;overflow:visible}.speedo-track,.speedo-arc{fill:none;stroke-width:10px;stroke-linecap:round}.speedo-track{stroke:#ffffff1f}.speedo-arc{stroke:var(--gold);filter:drop-shadow(0 0 6px #f1dcaeb3);transition:stroke .2s}.speedo-arc.ready{stroke:var(--ok);filter:drop-shadow(0 0 8px #5fe0a0e6)}.speedo-mark{stroke:#fff;stroke-width:2px;opacity:.7}.speedo-readout{text-align:center;line-height:1;position:absolute;bottom:4px;left:0;right:0}.speedo-readout .speed{text-shadow:0 2px 16px #0009;font-size:clamp(44px,12vw,64px);font-weight:800}.speedo-readout .unit{color:var(--muted);margin-top:4px;font-size:13px;display:block}.force{left:calc(16px + env(safe-area-inset-left));flex-direction:column;align-items:center;gap:8px;display:flex;position:absolute;top:50%;transform:translateY(-50%)}.force-label{color:var(--muted);writing-mode:horizontal-tb;font-size:12px}.force-bar{border:1px solid var(--line);background:#00000073;border-radius:11px;width:22px;height:min(46vh,300px);position:relative;overflow:visible}.force-fill{background:linear-gradient(#ff2d2d,#ff7a2f 15%,#f4d35e 40%,#5fe0a0);border-radius:9px;height:0;position:absolute;bottom:2px;left:2px;right:2px;box-shadow:0 0 14px #ff783c80}.force-limit{background:var(--danger);height:2px;box-shadow:0 0 8px var(--danger);position:absolute;top:6%;left:-6px;right:-6px}.force-limit span{color:var(--danger);white-space:nowrap;font-size:11px;font-weight:700;position:absolute;top:-8px;left:36px}.force-value{font-size:15px;font-weight:700}.force.danger .force-value{color:var(--danger);animation:.25s steps(2,end) infinite blink}@keyframes blink{50%{opacity:.3}}.brake-btn{pointer-events:auto;right:calc(22px + env(safe-area-inset-right));bottom:calc(26px + env(safe-area-inset-bottom));color:#fff6;letter-spacing:.1em;touch-action:none;background:radial-gradient(circle at 35% 30%,#5a5458,#1d1a1c 70%);border:3px solid #ffffff2e;border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:6px;width:clamp(104px,26vw,140px);height:clamp(104px,26vw,140px);font-size:22px;font-weight:800;transition:transform 80ms,box-shadow .2s,background .2s;display:flex;position:absolute}.brake-icon{opacity:.8;background:repeating-linear-gradient(90deg,currentColor 0 4px,#0000 4px 9px);border-radius:6px;width:46%;height:16%}.brake-btn.ready{color:#fff;background:radial-gradient(circle at 35% 30%,#ff6a52,#b3140b 70%);border-color:#ff5a46e6;animation:.9s ease-in-out infinite pulse;box-shadow:0 0 0 6px #ff4b3a2e,0 0 36px #ff3c28a6}.brake-btn.pressed{animation:none;transform:scale(.92);box-shadow:0 0 0 10px #ff4b3a4d,0 0 50px #ff3c28e6}@keyframes pulse{50%{box-shadow:0 0 0 14px #ff4b3a14,0 0 46px #ff3c28cc}}.countdown{color:var(--gold-strong);text-shadow:0 0 40px #f1dcaeb3;pointer-events:none;justify-content:center;align-items:center;font-size:clamp(96px,28vw,180px);font-weight:900;animation:.9s ease-out pop;display:flex;position:fixed;inset:0}@keyframes pop{0%{opacity:0;transform:scale(1.6)}30%{opacity:1}to{transform:scale(1)}}.toast{border:1px solid var(--line);white-space:nowrap;pointer-events:none;background:#0009;border-radius:999px;padding:10px 18px;font-size:15px;font-weight:600;position:fixed;top:26%;left:50%;transform:translate(-50%)}.toast.alert{color:#fff;background:#c81e14d9;border-color:#ff7864cc;font-size:20px}.panel{width:min(460px,100vw - 28px);max-height:calc(100vh - 28px);max-height:calc(100dvh - 20px - env(safe-area-inset-top) - env(safe-area-inset-bottom));-webkit-overflow-scrolling:touch;overscroll-behavior:contain;border:1px solid var(--line);-webkit-backdrop-filter:blur(16px);-webkit-user-select:text;user-select:text;background:linear-gradient(160deg,#1e1618d1,#0c090bdb);border-radius:22px;padding:26px 24px 22px;position:fixed;top:50%;left:50%;overflow-y:auto;transform:translate(-50%,-50%);box-shadow:0 30px 80px #00000080}.menu{top:auto;bottom:calc(18px + env(safe-area-inset-bottom));text-align:center;transform:translate(-50%)}.brand{letter-spacing:.4em;color:var(--gold);font-size:12px}h1{letter-spacing:.06em;background:linear-gradient(180deg, #fff6e2, var(--gold));color:#0000;-webkit-background-clip:text;background-clip:text;margin:8px 0 4px;font-size:clamp(30px,8vw,40px)}h2{margin:0 0 6px;font-size:26px}.tagline{color:var(--muted);margin:0 0 14px}.rules{text-align:left;color:#f5efe6db;margin:0 0 18px;padding:0;font-size:14px;line-height:1.75;list-style:none}.rules li:before{content:"◆";color:var(--gold);vertical-align:2px;margin-right:8px;font-size:9px}.danger{color:var(--danger)}.actions{gap:10px;display:flex}.btn,.close,.mute{touch-action:manipulation}.btn{border:1px solid var(--line);height:48px;color:var(--ink);cursor:pointer;background:#ffffff0f;border-radius:14px;flex:1;font-size:16px;font-weight:700}.btn.primary{color:#20170c;background:linear-gradient(#f6e5bf,#c9a86c);border:none;box-shadow:0 8px 24px #c9a86c59}.btn:disabled{opacity:.5;cursor:default}.mute{color:var(--muted);cursor:pointer;background:0 0;border:none;margin-top:12px;font-size:13px}.hint-keys{color:#f5efe673;margin:4px 0 0;font-size:12px}.result{text-align:center}.result h2.fail{color:var(--danger)}.result h2.ok{color:var(--ok)}.result-sub{color:var(--muted);margin:0 0 16px;font-size:14px}.stats{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:14px;display:grid}.stats>div{background:#ffffff0d;border-radius:12px;flex-direction:column;gap:4px;padding:10px;display:flex}.stats .mono{font-size:20px;font-weight:700}.chart-box{background:#ffffff0a;border-radius:12px;margin-bottom:12px;padding:10px 10px 6px}.chart-head{color:var(--muted);flex-wrap:wrap;align-items:center;gap:4px 12px;margin-bottom:6px;font-size:11px;display:flex}.chart-title{color:var(--ink);margin-right:auto;font-size:13px;font-weight:700}.legend{align-items:center;gap:5px;display:inline-flex}.legend .dot{border-radius:2px;width:12px;height:3px}.legend .dot-speed{background:#f1dcae}.legend .dot-force{background:#ff6a3d}.legend .dash{border-top:2px dashed #ff3b30;width:12px}.chart{width:100%;height:150px;display:block}.score-box{flex-direction:column;margin-bottom:14px;display:flex}.score{color:var(--gold-strong);font-size:46px;font-weight:900}.submit-form{gap:8px;margin-bottom:6px;display:flex}.submit-form input{border:1px solid var(--line);min-width:0;height:48px;color:var(--ink);background:#00000059;border-radius:14px;outline:none;flex:1.4;padding:0 14px;font-size:16px}.submit-form input:focus{border-color:var(--gold)}.submit-msg{min-height:20px;color:var(--gold-strong);margin:0 0 10px;font-size:14px}.board{z-index:10;background:linear-gradient(160deg,#1e1618f7,#0c090bfa);padding-bottom:14px}.board-head{justify-content:space-between;align-items:center;display:flex}.close{border:1px solid var(--line);width:36px;height:36px;color:var(--ink);cursor:pointer;background:0 0;border-radius:50%;font-size:22px}.board-cols,.board-list li{grid-template-columns:34px 1fr 72px 64px 70px;align-items:center;gap:6px;display:grid}.board-cols{color:var(--muted);padding:10px 8px 6px;font-size:12px}.board-list{max-height:56vh;max-height:56dvh;margin:0;padding:0;list-style:none;overflow-y:auto}.board-list li{border-radius:10px;padding:9px 8px;font-size:14px}.board-list li:nth-child(odd){background:#ffffff0a}.board-list li.me{outline:1px solid var(--gold)}.board-list .rank{color:var(--gold);font-weight:800}.board-list .name{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.board-list .num{text-align:right}.board-list .score-cell{text-align:right;color:var(--gold-strong);font-weight:800}.board-list li.board-empty{text-align:center;color:var(--muted);padding:30px 0;display:block}.loading{color:var(--gold);letter-spacing:.2em;z-index:20;background:#120d10;justify-content:center;align-items:center;transition:opacity .6s;display:flex;position:fixed;inset:0}.loading.done{opacity:0;pointer-events:none}@media (max-width:380px){.panel{padding:20px 16px 16px}.rules{font-size:13px;line-height:1.65}.stats .mono{font-size:17px}.score{font-size:38px}.board-cols,.board-list li{grid-template-columns:26px 1fr 58px 54px 60px;font-size:13px}}@media (orientation:landscape) and (max-height:520px){.hud-top{top:calc(8px + env(safe-area-inset-top));left:calc(10px + env(safe-area-inset-left));right:calc(10px + env(safe-area-inset-right))}.hud-chip{padding:5px 10px}.hud-chip .value{font-size:17px}.speedo{left:calc(78px + env(safe-area-inset-left));bottom:calc(8px + env(safe-area-inset-bottom));width:min(220px,50vh);transform:none}.speedo-readout .speed{font-size:40px}.force{left:calc(12px + env(safe-area-inset-left));top:56%}.force-bar{height:46vh}.brake-btn{width:min(118px,30vh);height:min(118px,30vh);right:calc(16px + env(safe-area-inset-right));bottom:calc(14px + env(safe-area-inset-bottom));font-size:18px}.countdown{font-size:30vh}.toast{top:18%}.panel{width:min(620px,100vw - 24px);padding:14px 18px 12px}.menu{bottom:calc(8px + env(safe-area-inset-bottom))}.brand,.tagline,.hint-keys{display:none}h1{margin:0 0 8px;font-size:26px}h2{font-size:20px}.rules{grid-template-columns:1fr 1fr;gap:2px 14px;margin-bottom:10px;font-size:12.5px;line-height:1.5;display:grid}.btn{height:40px;font-size:15px}.mute{margin-top:6px}.result-sub{margin-bottom:8px}.stats{grid-template-columns:repeat(4,1fr);gap:6px;margin-bottom:8px}.stats>div{padding:6px}.stats .mono{font-size:15px}.score-box{margin-bottom:8px}.chart-box{margin-bottom:8px;padding:6px 8px 4px}.chart{height:110px}.score{font-size:32px}.submit-form input{height:40px}.submit-msg{margin-bottom:6px}.board-list{max-height:52dvh}}