:root{font-family:Inter,"Hiragino Kaku Gothic ProN","Yu Gothic",sans-serif;color:#f8fafc;background:#080b12;--panel:#121826;--panel2:#182133;--line:#2c374c;--accent:#f5c85b;--danger:#ef4444;--good:#34d399}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 50% -10%,#253149 0,#0c111c 38%,#07090e 80%);color:#fff}button,input{font:inherit}.screen{display:none;min-height:100vh;max-width:560px;margin:0 auto;padding:20px 16px calc(28px + env(safe-area-inset-bottom))}.screen.active{display:block}.topbar,.subhead{display:flex;align-items:center;justify-content:space-between;gap:12px}.topbar h1,.subhead h2{margin:2px 0 0;font-size:26px}.eyebrow{margin:0;color:#aab6cb;font-weight:800;font-size:11px;letter-spacing:.16em}.profile{border:1px solid var(--line);border-radius:14px;background:#101724;color:white;padding:9px 12px;display:flex;flex-direction:column;align-items:flex-end;max-width:46%}.profile span{font-weight:800;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:100%}.profile small{color:var(--accent)}.hero{margin:30px 0 24px;text-align:center}.hero-mark{width:104px;height:104px;border-radius:30px;margin:0 auto 14px;display:grid;place-items:center;font-size:54px;border:1px solid #43506a;background:linear-gradient(145deg,#212b3f,#0e1420);box-shadow:inset 0 0 0 1px #111827}.hero p{color:#c7d0df;font-weight:700}.menu,.stack{display:grid;gap:11px}.menu-btn,.choice{width:100%;min-height:68px;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,#182133,#101621);color:#fff;padding:13px 16px;text-align:left;display:flex;align-items:center;justify-content:space-between;gap:10px}.menu-btn strong,.choice strong{font-size:17px}.menu-btn span,.choice span{color:#9cabc0;font-size:12px;text-align:right}.menu-btn.primary{border-color:#8b712c;background:linear-gradient(145deg,#3c3219,#171714)}.home-note{font-size:11px;line-height:1.6;color:#748199;margin:18px 4px}.subhead{justify-content:flex-start}.subhead>button{width:44px;height:44px;border-radius:12px;border:1px solid var(--line);background:#111827;color:#fff;font-size:22px}.panel{margin-top:24px;border:1px solid var(--line);border-radius:18px;background:rgba(16,23,36,.9);padding:18px}.panel>p:first-child{margin-top:0;color:#cbd5e1}.battle-screen{max-width:600px}.battle-head{display:grid;grid-template-columns:1fr auto 1fr;gap:10px;align-items:center}.fighter{min-width:0;font-size:12px;font-weight:800}.fighter>span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.fighter.right{text-align:right}.hp{height:10px;background:#2d3442;border-radius:999px;overflow:hidden;margin-top:6px}.hp i{display:block;width:100%;height:100%;background:linear-gradient(90deg,#36d399,#86efac);transition:width .28s ease}.fighter.right .hp i{margin-left:auto}.match-time{text-align:center}.match-time span,.answer-timer span,.endless-stats span{display:block;font-size:9px;letter-spacing:.12em;color:#8896ab}.match-time strong{font-size:19px}.battle-stage{height:330px;margin:18px 0 14px;border:1px solid var(--line);border-radius:22px;background:radial-gradient(circle at 50% 50%,#1d2940,#0c111b 70%);position:relative;display:flex;flex-direction:column;align-items:center;justify-content:center;overflow:hidden}.big-countdown{font-size:140px;line-height:1;font-weight:1000;letter-spacing:-.08em;text-shadow:0 8px 40px rgba(255,255,255,.18)}.big-countdown.pop{animation:countPop .34s ease-out}.big-countdown.one{color:var(--accent)}@keyframes countPop{0%{transform:scale(2.2);opacity:0}60%{transform:scale(.92);opacity:1}100%{transform:scale(1)}}.round-status{font-weight:900;letter-spacing:.12em;min-height:24px;color:#d9e1ed}.answer-timer{position:absolute;bottom:18px;text-align:center}.answer-timer strong{font-size:28px}.attack-fx{position:absolute;inset:0;pointer-events:none}.attack-fx.hit::after{content:"";position:absolute;left:50%;top:50%;width:80px;height:80px;border-radius:50%;border:8px solid rgba(255,255,255,.8);transform:translate(-50%,-50%);animation:impact .42s ease-out forwards}@keyframes impact{to{width:420px;height:420px;opacity:0;border-width:1px}}.battle-stage.shake{animation:shake .25s linear}@keyframes shake{25%{transform:translateX(-5px)}50%{transform:translateX(6px)}75%{transform:translateX(-3px)}}.keys{display:grid;grid-template-columns:repeat(8,1fr);gap:4px;user-select:none;touch-action:manipulation}.key{min-width:0;height:124px;border:0;border-radius:0 0 8px 8px;background:linear-gradient(#fff,#e3e7ed);color:#111827;font-weight:900;font-size:16px;box-shadow:inset 0 -7px 0 #b7bfca}.key:active,.key.pressed{transform:translateY(3px);box-shadow:inset 0 -3px 0 #aab3bf;background:#f8d978}.key.low::after{content:"↓";display:block;font-size:10px}.key.high::after{content:"↑";display:block;font-size:10px}.keys.compact{margin-top:14px}.keys.compact .key{height:104px}.text-btn{display:block;margin:14px auto 0;background:transparent;border:0;color:#9cacbf;padding:12px}.endless-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.endless-stats>div{text-align:center;padding:10px;border-radius:12px;background:#0c121d}.endless-stats strong{display:block;font-size:22px;margin-top:3px}.center-status{text-align:center;font-weight:800;min-height:24px}.placeholder{text-align:center;padding:40px 20px}.placeholder p{color:#9aa8bc;line-height:1.7}.settings{display:grid;gap:22px}.settings label{display:grid;grid-template-columns:1fr auto;gap:8px;font-weight:800}.settings input{grid-column:1/-1;width:100%}.settings output{color:var(--accent)}.hidden{display:none!important}dialog{border:1px solid var(--line);border-radius:20px;background:#111827;color:#fff;width:min(92vw,420px);padding:0}dialog::backdrop{background:rgba(0,0,0,.72)}dialog form,.dialog-body{padding:22px}dialog h2{margin:6px 0}dialog p{color:#a7b2c4;line-height:1.5}dialog input{width:100%;font-size:16px;padding:13px;border-radius:12px;border:1px solid #3a465b;background:#080d16;color:#fff}.save-btn{width:100%;margin-top:14px;padding:13px;border:0;border-radius:12px;background:var(--accent);color:#1b1608;font-weight:900}@media(max-width:380px){.screen{padding-left:10px;padding-right:10px}.big-countdown{font-size:118px}.key{font-size:14px;height:108px}.battle-stage{height:290px}.menu-btn{padding-left:12px;padding-right:12px}}@media(prefers-reduced-motion:reduce){*{animation-duration:.001ms!important;transition-duration:.001ms!important}}