:root{--bg: #0e1726;--bg-2: #16223a;--card: #1b2942;--card-2: #223152;--line: #2c3e60;--text: #eaf0fb;--muted: #94a6c8;--accent: #f4b400;--accent-2: #ffd34d;--green: #2ec16e;--red: #ef5350;--blue: #4f9dff;--radius: 16px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px);--maxw: 520px;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);overscroll-behavior:none}body{-webkit-user-select:none;user-select:none}#app{max-width:var(--maxw);margin:0 auto;min-height:100%;display:flex;flex-direction:column}.screen{display:flex;flex-direction:column;flex:1;padding:calc(var(--safe-top) + 12px) 16px calc(var(--safe-bottom) + 12px);animation:fade .18s ease}@keyframes fade{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}.topbar{display:flex;align-items:center;gap:12px;margin-bottom:14px;min-height:44px}.topbar h1,.topbar h2{font-size:1.15rem;margin:0;flex:1}.iconbtn{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:var(--card);color:var(--text);font-size:1.2rem;display:grid;place-items:center;cursor:pointer}.iconbtn:active{background:var(--card-2)}.scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.btn{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:none;border-radius:14px;padding:16px 18px;font-size:1rem;font-weight:700;background:var(--accent);color:#1a1300;width:100%;cursor:pointer;min-height:52px;transition:transform .05s ease,filter .15s ease}.btn:active{transform:scale(.985)}.btn:disabled{opacity:.5}.btn.secondary{background:var(--card-2);color:var(--text);border:1px solid var(--line)}.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--line)}.btn.danger{background:var(--red);color:#fff}.btn.green{background:var(--green);color:#04210f}.actionbar{position:sticky;bottom:0;padding-top:10px;padding-bottom:var(--safe-bottom);display:flex;gap:10px;background:linear-gradient(to top,var(--bg) 70%,transparent)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px}.muted{color:var(--muted)}.center{text-align:center}.pill{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:4px 10px;border-radius:999px;background:var(--card-2);color:var(--muted)}.pill.do{background:#2ec16e29;color:#6fe6a3}.pill.dont{background:#ef535029;color:#ff8d8a}.hero{text-align:center;padding:28px 16px 12px}.hero .logo{font-size:3rem;line-height:1}.hero h1{font-size:1.7rem;margin:12px 0 4px}.hero p{color:var(--muted);margin:0}.statrow{display:flex;gap:10px;margin:18px 0}.stat{flex:1;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:12px;text-align:center}.stat b{font-size:1.4rem;display:block}.stat span{font-size:.74rem;color:var(--muted)}.segment{margin-bottom:22px}.segment-head{display:flex;align-items:baseline;gap:8px;margin:0 4px 10px}.segment-head h3{margin:0;font-size:1.05rem}.segment-head .seg-prog{margin-left:auto;font-size:.8rem;color:var(--muted)}.level-row{display:flex;align-items:center;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;margin-bottom:10px;cursor:pointer}.level-row.locked{opacity:.55;cursor:not-allowed}.level-row:active:not(.locked){background:var(--card-2)}.level-node{width:46px;height:46px;border-radius:50%;display:grid;place-items:center;font-weight:800;background:var(--card-2);border:2px solid var(--line);flex:none}.level-row.done .level-node{background:var(--green);color:#04210f;border-color:var(--green)}.level-row.current .level-node{border-color:var(--accent);color:var(--accent)}.level-meta{flex:1;min-width:0}.level-meta b{display:block;font-size:.98rem}.level-meta span{font-size:.8rem;color:var(--muted)}.stars{font-size:.85rem;letter-spacing:1px;color:var(--accent);white-space:nowrap}.progress{height:8px;background:var(--card-2);border-radius:999px;overflow:hidden}.progress>div{height:100%;background:var(--accent);border-radius:999px;transition:width .3s ease}.lesson-deck{display:flex;flex-direction:column;gap:14px;flex:1}.lesson-card{animation:fade .2s ease}.lesson-card h2{margin:0 0 6px;font-size:1.3rem}.lesson-card .emoji{font-size:2.6rem}.lesson-card ul{padding-left:18px;margin:10px 0}.lesson-card li{margin:7px 0;line-height:1.4}.dotrow{display:flex;gap:6px;justify-content:center;margin:14px 0}.dot{width:8px;height:8px;border-radius:50%;background:var(--line)}.dot.on{background:var(--accent);width:22px;border-radius:4px}.do-dont{display:grid;gap:8px;margin-top:10px}.dd{display:flex;gap:10px;align-items:flex-start;font-size:.92rem;line-height:1.35}.dd .ic{flex:none}.q{margin-bottom:6px}.q h2{font-size:1.15rem}.options{display:flex;flex-direction:column;gap:10px;margin:14px 0}.opt{text-align:left;padding:15px;border-radius:12px;border:1.5px solid var(--line);background:var(--card);color:var(--text);font-size:.98rem;cursor:pointer;min-height:52px}.opt:active{background:var(--card-2)}.opt.correct{border-color:var(--green);background:#2ec16e24}.opt.wrong{border-color:var(--red);background:#ef535024}.opt.disabled{pointer-events:none}.explain{margin-top:10px;padding:12px;border-radius:12px;background:var(--bg-2);border:1px solid var(--line);font-size:.9rem;color:var(--muted);line-height:1.4}.sign-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:14px 0}.sign{aspect-ratio:1;border-radius:12px;border:2px solid var(--line);background:var(--card);display:grid;place-items:center;padding:8px;cursor:pointer}.sign.sel{border-color:var(--accent)}.sign.correct{border-color:var(--green);background:#2ec16e24}.sign.wrong{border-color:var(--red)}.sign svg{width:100%;height:100%}.sim{display:flex;flex-direction:column;gap:12px;flex:1}.sim-task{background:var(--bg-2);border:1px solid var(--line);border-radius:12px;padding:10px 14px;font-size:.9rem;display:flex;gap:8px;align-items:center}.sim-task b{color:var(--accent)}.dash{background:radial-gradient(120% 120% at 50% 0%,#1c2c49,#111b2e);border:1px solid var(--line);border-radius:16px;padding:14px}.dash-gauges{display:flex;align-items:center;justify-content:space-around}.gauge-label{text-align:center;font-size:.7rem;color:var(--muted);margin-top:2px}.geardisp{font-size:2.4rem;font-weight:800;width:60px;text-align:center;color:var(--accent)}.warnlights{display:flex;gap:8px;justify-content:center;margin-top:8px;min-height:22px}.warn{font-size:.7rem;padding:3px 8px;border-radius:8px;font-weight:700}.warn.red{background:#ef535033;color:#ff8d8a}.warn.amber{background:#f4b40033;color:var(--accent-2)}.warn.green{background:#2ec16e33;color:#6fe6a3}.controls{display:grid;grid-template-columns:1fr 1fr 1fr;gap:10px}.pedal{position:relative;height:150px;border-radius:14px;border:1px solid var(--line);overflow:hidden;background:var(--card);touch-action:none;-webkit-user-select:none;user-select:none}.pedal .fill{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(to top,var(--accent),var(--accent-2));opacity:.85}.pedal.brake .fill{background:linear-gradient(to top,var(--red),#ff8d8a)}.pedal.clutch .fill{background:linear-gradient(to top,var(--blue),#9cc7ff)}.pedal .lbl{position:absolute;top:8px;left:0;right:0;text-align:center;font-weight:800;font-size:.8rem;z-index:2;pointer-events:none}.pedal .lbl small{display:block;font-weight:600;color:var(--text);opacity:.7;font-size:.66rem}.pedal .bite-band{position:absolute;left:0;right:0;z-index:1;border-top:2px dashed rgba(255,255,255,.4);border-bottom:2px dashed rgba(255,255,255,.4);pointer-events:none}.gearbox{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-top:4px}.gearbtn{padding:14px 0;border-radius:12px;border:1.5px solid var(--line);background:var(--card);color:var(--text);font-weight:800;font-size:1.05rem;cursor:pointer;touch-action:manipulation}.gearbtn.active{border-color:var(--accent);color:var(--accent);background:var(--card-2)}.gearbtn.n{color:var(--green)}.result-hero{text-align:center;padding:24px 0}.result-hero .big{font-size:3.4rem}.result-stars{font-size:2.2rem;letter-spacing:6px;color:var(--accent);margin:8px 0}.miss{text-align:left;margin-top:14px}.miss li{color:var(--muted);margin:6px 0}.setting-row{display:flex;align-items:center;gap:12px;padding:16px;border-bottom:1px solid var(--line)}.setting-row:last-child{border-bottom:none}.setting-row b{flex:1}.switch{width:52px;height:30px;border-radius:999px;background:var(--card-2);border:1px solid var(--line);position:relative;cursor:pointer;flex:none}.switch.on{background:var(--green)}.switch:after{content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;border-radius:50%;background:#fff;transition:left .18s ease}.switch.on:after{left:25px}.toast-wrap{position:fixed;left:0;right:0;bottom:calc(var(--safe-bottom) + 16px);display:flex;flex-direction:column;align-items:center;gap:8px;z-index:50;pointer-events:none}.toast{background:#000a;color:#fff;padding:12px 18px;border-radius:12px;font-size:.9rem;animation:fade .2s ease;max-width:90%}.modal-back{position:fixed;top:0;right:0;bottom:0;left:0;background:#000a;display:grid;place-items:center;z-index:60;padding:20px}.modal{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:22px;max-width:360px;width:100%;animation:fade .2s ease}.modal h2{margin-top:0}.spacer{flex:1}.row{display:flex;gap:10px}.mt{margin-top:14px}.mb{margin-bottom:14px}small.hint{color:var(--muted);font-size:.78rem}