:root{font-size:20px;color:#142d50;background:#f3f6fc;font-family:system-ui,-apple-system,"Microsoft YaHei",sans-serif}*{box-sizing:border-box}body{margin:0}button,select,input{font:inherit}button,select{cursor:pointer}button{min-height:56px;border:0;border-radius:12px;padding:12px 22px;color:inherit}button:focus-visible,input:focus-visible,select:focus-visible{outline:4px solid #ffb733;outline-offset:4px}header{max-width:1160px;margin:auto;padding:28px 32px;display:flex;justify-content:space-between;align-items:center}.brand{text-decoration:none;color:#142d50;font-weight:800;font-size:1.4rem;letter-spacing:1px}.brand span{color:#2458cc}.brand small{font-weight:400;font-size:.85rem;margin-left:22px;letter-spacing:0;color:#58677e}main{max-width:1160px;margin:auto;padding:16px 32px 32px}.eyebrow{font-size:.85rem;color:#2458cc;font-weight:650}h1{font-size:2rem;margin:12px 0}p{color:#53647e;line-height:1.65;margin:8px 0}nav{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:30px 0}.tab{text-align:left;background:white;border:2px solid #dce4f0;padding:22px;display:grid;grid-template-columns:64px 1fr;column-gap:16px;align-items:center}.tab .icon{grid-row:span 2;background:#eaf0ff;color:#2458cc;width:64px;height:64px;display:grid;place-items:center;border-radius:16px;font-size:1.5rem;font-weight:700}.tab strong{font-size:1.15rem}.tab>span:last-child{font-size:.9rem;color:#53647e;margin-top:6px}.tab.active{border-color:#2458cc;box-shadow:0 4px 0 #2458cc}.workspace{background:white;border:1px solid #dce4f0;border-radius:22px;padding:30px}.gamehead{display:flex;justify-content:space-between;gap:24px;align-items:center}h2{font-size:1.5rem;margin:6px 0}.quiet{background:#edf2fa;border:1px solid #dce4f0}.primary{background:#2458cc;color:white;font-weight:650}.toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin:26px 0}select{border:1px solid #bdcade;border-radius:10px;padding:12px;background:white;color:#142d50;margin-left:12px;max-width:100%}.area{background:#f5f8fd;border-radius:16px;min-height:290px;padding:24px;display:flex;align-items:center;justify-content:center}.placeholder{text-align:center;color:#62738e}.placeholder b{display:block;font-size:3.8rem;color:#2458cc;margin-bottom:8px}.grid{display:grid;gap:14px;width:min(100%,620px);grid-template-columns:repeat(3,1fr)}.grid.four{grid-template-columns:repeat(4,1fr)}.tile{background:white;border:2px solid #cddaf0;min-height:95px;font-size:2rem;padding:12px;color:#2458cc;box-shadow:0 3px 0 #dce4f0}.tile.back{background:#2458cc;color:white;border-color:#2458cc}.tile.matched,.tile.done{background:#e1f4eb;color:#166249;border-color:#9bd6bc;box-shadow:none}.tile:disabled{cursor:default;opacity:1}.typingbox{text-align:center;width:100%;max-width:600px}.target{font-size:3rem;letter-spacing:.16em;font-weight:700;margin:12px 0 22px}.typingbox input{width:100%;border:2px solid #9cafd1;border-radius:12px;padding:16px;text-align:center;font-size:1.5rem}.typingbox .quiet{margin-top:16px}.timer{font-size:1.15rem;color:#2458cc}.timer.urgent{color:#a64519}#message{padding-top:22px;min-height:52px;font-weight:600;line-height:1.6}.bottom{display:flex;justify-content:space-between;gap:15px;color:#53647e;font-size:.9rem;margin:22px 0}footer{font-size:.8rem;color:#62738e;line-height:1.6}.success{font-size:1.5rem;text-align:center}.success b{display:block;font-size:2rem;color:#166249;margin-bottom:16px}[hidden]{display:none!important}@media(max-width:720px){header{padding:20px}.brand small{display:none}main{padding:10px 16px 24px}h1{font-size:1.65rem}nav{gap:10px;margin:24px 0}.tab{display:flex;flex-direction:column;text-align:center;padding:14px 6px;gap:10px}.tab .icon{width:48px;height:48px;font-size:1.15rem}.tab strong{font-size:.95rem}.tab>span:last-child{display:none}.workspace{padding:20px 16px}.gamehead{align-items:flex-start;flex-direction:column;gap:12px}.toolbar{gap:12px}select{margin:8px 0 0;display:block}.area{padding:14px;min-height:280px}.grid{gap:10px}.tile{min-height:78px;padding:8px;font-size:1.6rem}.bottom{flex-direction:column}#stat{width:100%}.target{font-size:2.3rem}}
.scoreboard{display:flex;flex-wrap:wrap;gap:14px 24px;margin-bottom:22px;padding:16px 20px;border-radius:12px;background:#eaf0ff;font-size:.95rem}.scoreboard strong{color:#2458cc}.clock{margin-bottom:18px;padding:14px 18px;border:2px solid #cad9f5;border-radius:14px;background:#f3f7ff}.clock-head{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}.clock-head span{font-size:.85rem}.time-track{height:12px;background:#dce5f5;border-radius:12px;overflow:hidden;margin-top:12px}#time-bar{height:100%;background:#2458cc;transition:width .1s linear;border-radius:12px}.clock.warning{border-color:#dc8c22;background:#fff3dd;color:#8a4c00}.clock.warning #time-bar{background:#d18017}.clock.warning #time{display:inline-block;animation:heartbeat 1.2s ease-in-out infinite}.clock.critical{border-color:#c44d31;color:#9d351d;background:#fff0e9}.clock.critical #time-bar{background:#c44d31}.clock.critical #time{animation-duration:.65s}.area.warning{box-shadow:inset 0 0 0 3px #efbd72;animation:edgeglow 1.8s ease-in-out infinite}.area.critical{box-shadow:inset 0 0 0 3px #dd795e;animation-duration:.9s}.earned{font-size:2.6rem;font-weight:800;color:#2458cc;margin:12px 0}.success #reward{font-size:1rem;color:#166249;margin-top:18px}.celebrate .earned{animation:rewardpop .65s ease-out}.celebrate{background:linear-gradient(120deg,#e3f5ed,#edf2ff);border:3px solid #57b38c}.records{background:white;margin-top:24px;border:1px solid #dce4f0;border-radius:18px;padding:24px 30px}.records p,.records li{font-size:.9rem}.records ul{list-style:none;padding:0;margin-bottom:0}.records li{padding:12px 0;border-top:1px solid #e2e8f3;line-height:1.6}button:disabled,select:disabled{cursor:default}.toolbar select:disabled{opacity:.65}@keyframes heartbeat{50%{transform:scale(1.07)}}@keyframes edgeglow{50%{box-shadow:inset 0 0 0 5px #efbd72}}@keyframes rewardpop{0%{transform:scale(.75)}65%{transform:scale(1.12)}100%{transform:scale(1)}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}@media(max-width:720px){.records{padding:20px 16px}.scoreboard{flex-direction:column;gap:8px}.earned{font-size:2rem}}
.area.critical{animation-name:criticalglow}@keyframes criticalglow{50%{box-shadow:inset 0 0 0 5px #dd795e}}
/* One chase stage: measured layout slots keep the road, task and controls clear. */
.race-mode .intro{display:none}.race-mode header{padding-block:12px}.race-mode main{padding-top:0}.race-mode nav{margin-block:6px 14px}.race-mode .tab{padding:12px 16px}.race-mode .tab .icon{width:44px;height:44px;font-size:1.2rem}.race-mode .tab{grid-template-columns:44px 1fr}
.race-workspace{padding:0;overflow:hidden;background:#eaf0f7}.race-workspace>.gamehead,.race-workspace>.toolbar,.race-workspace>#clock,.race-workspace>#message{display:none!important}.race-workspace>.area{padding:0;display:block;background:transparent;animation:none;box-shadow:none}.race-workspace>.scoreboard{margin:0;border-radius:0;padding:10px 22px;font-size:.7rem;gap:10px 20px}
.race-top{display:flex;align-items:center;gap:10px;padding:12px 22px;color:#eff8ff;background:#10283e}.race-top>div:first-child{margin-right:auto}.race-top h2{margin:0;font-size:1.15rem}.race-kicker{display:none}.race-top .quiet{background:#26465f;border:1px solid #638097;color:white;min-height:44px;font-size:.8rem;padding:8px 14px}
.race-stage{position:relative;isolation:isolate;display:grid;grid-template-rows:auto auto auto minmax(250px,1fr) auto;min-height:max(620px,min(880px,calc(100svh - 86px)));height:auto;max-height:none;background:#9bcfe4;overflow:hidden;color:#fff}
.scene-host{position:absolute;inset:0;z-index:0;pointer-events:none}.scene-host>canvas,.scene-host>svg{mask-image:linear-gradient(to bottom,transparent var(--road-start),#000 calc(var(--road-start) + 20px),#000 calc(100% - var(--road-end) - 16px),transparent calc(100% - var(--road-end)));display:block;position:absolute;inset:0;width:100%;height:100%}.scene-fallback{position:absolute;top:55%;width:100%;text-align:center;color:#10283e;font-size:.8rem}
.race-telemetry{grid-row:1;position:relative;z-index:2;display:flex;justify-content:space-between;align-items:center;gap:16px;padding:14px 24px;background:linear-gradient(#10283ef2,#10283e8a);border-bottom:1px solid #daf4ff30}
.race-caption{display:flex;flex-direction:column;gap:6px;font-size:.8rem;font-weight:650}.race-combo{font-size:.7rem;font-weight:400;color:#c0e0ef}.race-hud{display:flex;gap:26px;pointer-events:none}.race-hud>div{min-width:92px}.race-hud small{display:block;font-size:.7rem;color:#c5e2ef}.race-hud strong{display:block;font-size:1.25rem;font-variant-numeric:tabular-nums;margin-top:2px}.race-hud em{font-style:normal;font-size:.65rem;color:#c5e2ef}.race-hud>div:last-child strong{color:#ffe39a}
.typing-mission{grid-row:2;position:relative;z-index:2;justify-self:center;width:min(760px,calc(100% - 48px));min-width:0;margin:16px 0 0;padding:0 12px;background:linear-gradient(90deg,transparent,#0c294850 22%,#0c294850 78%,transparent);border:0;text-align:center;text-shadow:0 2px 6px #08253e;}
.task-sentence{font-size:.7rem;line-height:1.5;color:#e4f4ff;margin:0 0 8px;overflow-wrap:anywhere}.mission-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:14px;min-height:26px;margin-bottom:8px;font-size:.7rem;line-height:1.5;color:#e8f8ff}.mission-kind{font-weight:700;letter-spacing:.08em}.letter-count{font-variant-numeric:tabular-nums;color:#e5f5ff}.bonus-clock{color:#ffe095;font-weight:750}.bonus-track{height:4px;background:#18354d6b;margin:0 0 8px;overflow:hidden;border-radius:3px}.bonus-track i{display:block;height:100%;background:#ffd276;transition:width .1s linear}
.pinyin-task{display:flex;flex-wrap:nowrap;justify-content:safe center;align-items:start;gap:18px;min-width:0;max-width:100%;overflow-x:auto;scrollbar-width:none;padding:3px 8px 10px;margin:0;overscroll-behavior-x:contain;scroll-behavior:smooth}.pinyin-task::-webkit-scrollbar{display:none}.syllable{flex:none;display:flex;flex-direction:column;align-items:center;gap:5px}.hanzi{font-size:1.15rem;line-height:1.35;font-weight:650;color:#fff}.roman{font:750 1.65rem/1.4 ui-monospace,SFMono-Regular,Consolas,monospace;letter-spacing:1px;white-space:nowrap;color:#ecf8ff}.roman>span{display:inline-block;border-bottom:3px solid #c7e6f84a;border-radius:3px;min-width:.66em}.roman .typed{color:#9cffcd;border-color:#72e7b0}.roman .next-letter{color:#152d42;background:#ffe095;border-color:#ffd269;text-shadow:none;box-shadow:0 0 14px #ffe09544}.bonus-active .mission-kind{color:#ffe095}.bonus-warning .bonus-clock{color:#ffb295;animation:missionpulse .7s ease-in-out infinite}.bonus-warning .roman .next-letter{background:#ffb295}.bonus-warning .bonus-track i{background:#ffb295}.wrong .roman .next-letter{background:#ffb295}
.feedback-rail{grid-row:3;z-index:2;position:relative;display:grid;place-items:center;min-height:44px;padding:4px 20px;text-align:center;font-size:.75rem;line-height:1.5;text-shadow:0 2px 5px #10283e;color:#e9f7ff}.letter-feedback{margin:0;max-width:100%;overflow-wrap:anywhere}.letter-feedback.good{color:#b3ffdc}.letter-feedback.bad{color:#ffe0d3}.scene-message{display:none;font-size:.85rem;font-weight:700;color:#ffe6a1}.feedback-rail:has(.scene-message:not(:empty)) .letter-feedback{display:none}.feedback-rail:has(.scene-message:not(:empty)) .scene-message{display:block}
.chase-window{grid-row:4;position:relative;min-height:250px;pointer-events:none}.car-tag{position:absolute;z-index:1;transform:translateX(-50%);text-align:center;pointer-events:none;white-space:nowrap}.car-tag b{display:block;padding:3px 8px;font-size:.65rem;line-height:1.4;border-radius:20px;color:#fff;background:#173958e6;border:1px solid #e7f2ff77;font-weight:650;box-shadow:0 2px 6px #08203944}.car-tag.player b{background:#984414e6}.car-tag span{display:none}
.cockpit{grid-row:5;position:relative;z-index:2;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 22px;padding:12px 24px;color:#e3f3ff;background:linear-gradient(#0c253dc9,#0a2138f5);border-top:1px solid #abd9ed44}.route-row{display:flex;align-items:center;gap:12px;font-size:.7rem;min-width:0;grid-column:1;grid-row:1}.route-track{position:relative;flex:1;height:5px;background:#688ca4;border-radius:4px;margin:10px 8px}.route-track i{position:absolute;top:50%;transform:translate(-50%,-50%);font-size:0;width:12px;height:12px;border-radius:50%;border:2px solid #fff}.route-player{background:#ff9b3d;z-index:2}.route-police{background:#4393e8;z-index:1}.race-readouts{grid-column:1;grid-row:2;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:.7rem;min-width:0;flex-wrap:wrap}.race-points{color:#ffdf94}.race-progress-note{color:#b7d3e4;font-size:.65rem}.race-input-label{position:relative;grid-column:2;grid-row:1/3;display:flex;align-items:center;gap:10px;font-size:.7rem;color:#d0e8f7}.race-input{position:absolute;left:0;bottom:0;opacity:0;width:1px;height:1px;padding:0;border:0;pointer-events:none}.keyboard-toggle{font-size:.7rem;min-height:42px;padding:8px 12px;color:white;background:#2e536e;border:1px solid #8badc3;border-radius:8px}.keyboard{grid-column:1/-1;width:100%;max-width:660px;justify-self:center;margin:8px 0 0;user-select:none}.keyboard>div{display:flex;justify-content:center;gap:6px;margin:5px 0}.keyboard button{flex:1;max-width:56px;min-width:0;min-height:44px;padding:4px 0;border:1px solid #7e9eb2;border-bottom:3px solid #091c2b;border-radius:7px;background:#2a465d;color:#fff;font:600 1rem ui-monospace,monospace;touch-action:manipulation}.keyboard button.next-key{background:#ffe095;color:#172f43;border-color:#e1bb69}.keyboard button:active{transform:translateY(2px)}.keyboard button:disabled{opacity:.5}.input-tip{display:none}
.race-stage:has(.keyboard:not([hidden])){min-height:780px;max-height:none}.race-overlay{position:absolute;inset:0;z-index:6;display:grid;place-items:center;padding:24px;background:#061b3270}.overlay-content{width:min(540px,100%);max-height:100%;overflow:auto;padding:26px;border:1px solid #7899b0;border-radius:18px;background:#10283ef5;box-shadow:0 18px 55px #06172955;text-align:center;color:white}.overlay-content h3{font-size:1.35rem;line-height:1.4;margin:0 0 12px;color:#ffdf94}.overlay-content p{font-size:.8rem;line-height:1.7;color:#d9ecf7;margin:10px 0}.overlay-actions{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:20px}.overlay-actions button{min-height:48px;padding:10px 18px;background:#ffcd6b;color:#153046;font-size:.85rem}.overlay-actions button:not(:first-child){background:#355c78;color:#fff}.lobby-help{font-size:.8rem;line-height:1.9;color:#dfedf7}.race-save-status{color:#acedd7!important}.race-stage:has(.race-overlay:not([hidden])) .typing-mission,.race-stage:has(.race-overlay:not([hidden])) .feedback-rail{visibility:hidden}.race-stage:has(.race-overlay:not([hidden])) .cockpit{opacity:.4;pointer-events:none}.race-stage:has(.race-overlay:not([hidden])) .car-tag{visibility:hidden}
.race-stage.danger:after,.race-stage.wrong:after,.race-stage.boosting:after{content:'';position:absolute;inset:0;z-index:1;pointer-events:none;box-shadow:inset 0 0 55px #ef6c4866}.race-stage.danger:after{animation:chasedanger 1s ease-in-out infinite}.race-stage.wrong:after{box-shadow:inset 0 0 70px #ed583a99}.race-stage.boosting:after{box-shadow:inset 0 0 65px #42d8ff88}.race-stage.letter-thrust .player-speed{color:#94ffd1}.race-stage.wrong .player-speed{color:#ffb295}.race-stage.won .overlay-content{border-color:#8de4be}.race-stage.caught .overlay-content{border-color:#f4af90}
.level-chooser{padding:20px 24px;background:#fff}.level-chooser p{font-size:.8rem}.level-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:8px;margin-top:14px}.level-grid button{min-height:58px;padding:8px 2px;background:#e9f0f8;font-size:.9rem}.level-grid small{display:block;font-size:.6rem;margin-top:3px}.level-grid button.selected{background:#2458cc;color:#fff}.level-grid button:disabled{background:#edf0f3;color:#7a8b9d}.race-rules{margin:16px 24px;padding:14px 18px;background:#fff;border:1px solid #cad7e4;border-radius:10px}.race-rules summary{cursor:pointer;font-weight:650;font-size:.8rem}.race-rules p{font-size:.8rem;line-height:1.7}.race-mode .records h2{font-size:1.2rem}
@keyframes chasedanger{50%{box-shadow:inset 0 0 75px #ef6c48aa}}@keyframes missionpulse{50%{opacity:.65;transform:scale(1.06)}}
@media(max-width:720px){.race-mode header{padding:10px 14px}.race-mode main{padding-inline:8px}.race-mode nav{gap:6px;margin-bottom:10px}.race-mode .tab{display:block;padding:10px 4px;min-height:48px;font-size:.8rem}.race-mode .tab .icon,.race-mode .tab>span:last-child{display:none}.race-top{padding:10px 12px;gap:7px}.race-top h2{font-size:1rem}.race-top .quiet{font-size:.7rem;padding:6px 9px;min-height:40px}.race-workspace>.scoreboard{padding:8px 12px;font-size:.65rem;gap:5px 14px}.race-stage{min-height:max(610px,calc(100svh - 70px));height:auto;max-height:none}.race-telemetry{padding:10px 12px;display:block}.race-caption{flex-direction:row;justify-content:space-between;font-size:.7rem;margin-bottom:10px;gap:8px}.race-combo{font-size:.65rem}.race-hud{justify-content:space-between;gap:8px}.race-hud>div{min-width:0}.race-hud small{font-size:.65rem}.race-hud strong{font-size:1.1rem}.race-hud em{font-size:.6rem}.typing-mission{width:calc(100% - 20px);padding:0 4px;margin-top:12px}.mission-head{font-size:.7rem;gap:4px 10px}.pinyin-task{gap:12px;padding:3px 5px 8px}.roman{font-size:1.35rem;letter-spacing:.5px}.hanzi{font-size:1.1rem}.feedback-rail{font-size:.7rem;padding:4px 12px;min-height:48px}.scene-message{font-size:.8rem}.chase-window{min-height:230px}.car-tag b{font-size:.6rem;padding:3px 6px}.cockpit{padding:10px 12px;gap:4px 12px}.route-row,.race-readouts{font-size:.65rem;gap:8px}.race-progress-note{display:none}.race-input-label{font-size:0;gap:0}.keyboard-toggle{font-size:.65rem;padding:7px 9px}.keyboard>div{gap:4px}.keyboard button{min-height:43px;font-size:.85rem}.race-stage:has(.keyboard:not([hidden])){min-height:770px}.overlay-content{padding:22px 16px}.overlay-content h3{font-size:1.15rem}.overlay-content p,.lobby-help{font-size:.75rem}.overlay-actions button{font-size:.75rem}.race-overlay{padding:14px}.race-rules{margin:12px}.level-chooser{padding:14px}.level-grid{grid-template-columns:repeat(5,minmax(0,1fr))}}
@media(prefers-reduced-motion:reduce){.race-stage:after,.bonus-warning .bonus-clock{animation:none!important}.pinyin-task{scroll-behavior:auto}}
@media(max-height:720px) and (min-width:721px){.race-stage{min-height:calc(100svh - 70px);grid-template-rows:auto auto auto minmax(210px,1fr) auto}.chase-window{min-height:210px}.race-stage:has(.keyboard:not([hidden])){min-height:760px}}

/* Only the task fades: its timer, penalty feedback and road stay readable. */
.typing-mission .pinyin-task,.typing-mission .task-sentence{opacity:var(--task-opacity,1);transition:opacity .1s linear}
.typing-mission .bonus-clock{min-width:6.5em;font-variant-numeric:tabular-nums}
.typing-mission.task-expired .pinyin-task,.typing-mission.task-expired .task-sentence{opacity:0;transition:none}
.typing-mission.task-expired .bonus-clock{color:#ffb295}