:root{--bg: #0b0c10;--panel: #12141a;--line: #262a35;--text: #e8e8ec;--dim: #9aa0b0;--gold: #ffd95a;--danger: #e65a4d;--font: system-ui, -apple-system, "Hiragino Sans", "Noto Sans JP", "Yu Gothic", sans-serif}*{box-sizing:border-box;margin:0;padding:0;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none;-webkit-tap-highlight-color:transparent}html,body{width:100%;height:100%;overflow:hidden;overscroll-behavior:none;background:var(--bg);color:var(--text);font-family:var(--font);touch-action:manipulation}#stage{position:absolute;left:50%;top:50%;width:1080px;height:1920px;transform-origin:center center;background:var(--bg);overflow:hidden}.screen{position:absolute;inset:0}.screen[hidden]{display:none}.btn{font-family:inherit;font-size:44px;font-weight:600;color:var(--text);background:#1c2029;border:3px solid var(--line);border-radius:14px;padding:26px 64px;cursor:pointer}.btn-primary{background:#2c3444;border-color:#46506a}.btn:disabled{opacity:.35}.title-inner{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:28px;padding:80px 60px;text-align:center}#title-heading{font-size:88px;font-weight:800;letter-spacing:.02em}.tagline{font-size:34px;color:var(--dim);margin-bottom:24px}.rules{font-size:32px;line-height:1.7;white-space:pre-line;border:2px solid var(--line);border-radius:12px;padding:28px 40px;background:var(--panel)}.best{font-size:34px;color:var(--gold);margin-top:8px}.lang{display:flex;gap:16px;margin-top:40px}.lang button{font-family:inherit;font-size:28px;color:var(--dim);background:transparent;border:2px solid var(--line);border-radius:10px;padding:14px 30px;cursor:pointer}.lang-sound{margin-top:16px}.lang button[aria-pressed=true]{color:var(--text);border-color:#5a648a;background:#1c2029}.credit{position:absolute;left:0;right:0;bottom:48px;z-index:1;text-align:center;font-size:26px;color:#6f778a}.credit-link{display:inline-flex;align-items:center;gap:.4em;color:var(--dim);text-decoration:none;padding:12px 16px;vertical-align:middle}.credit-icon{width:.95em;height:.95em;flex-shrink:0}.credit-handle{letter-spacing:.03em;opacity:.75}#hud{position:absolute;left:0;top:0;width:100%;height:150px;display:flex;flex-direction:column;justify-content:center;gap:6px;padding:0 40px}.hud-row{display:flex;justify-content:space-between;font-size:34px;font-variant-numeric:tabular-nums}.hud-row-sub{color:var(--dim)}.score{color:var(--gold);font-weight:700}#gauges{position:absolute;left:0;top:150px;width:100%;height:70px;display:flex;align-items:center;justify-content:center;border-bottom:2px solid var(--line)}#brief{position:absolute;left:0;top:220px;width:100%;height:220px;display:flex;align-items:center;justify-content:center;padding:0 50px;font-size:52px;font-weight:700;line-height:1.3;text-align:center;overflow:hidden}#brief.boss{color:var(--gold)}#range{position:absolute;left:0;top:440px;width:1080px;height:1450px;display:block;touch-action:none}.bar{background:#191b22;border-radius:6px;overflow:hidden}.bar-combo{width:620px;height:16px}.fill{height:100%;width:0;border-radius:6px}#combo-fill{background:var(--gold)}#combo-aura,#combo-break{position:absolute;inset:0;pointer-events:none;opacity:0}#combo-aura{will-change:opacity}#combo-break{box-shadow:inset 0 0 240px 70px var(--danger)}#combo-break.flash{animation:combo-break .5s ease-out}@keyframes combo-break{0%{opacity:.85}to{opacity:0}}#game.shake{animation:shake .28s ease-out}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-14px,6px)}40%{transform:translate(12px,-8px)}60%{transform:translate(-8px,4px)}80%{transform:translate(6px,-3px)}}#hud-combo{display:inline-block;transform-origin:left center;transition:color .2s ease-out,transform .2s ease-out}#hud-combo[data-tier="1"]{color:#ffd95a;transform:scale(1.08)}#hud-combo[data-tier="2"]{color:#ffa53a;transform:scale(1.16);text-shadow:0 0 18px currentcolor}#hud-combo[data-tier="3"]{color:#ff7a2f;transform:scale(1.24);text-shadow:0 0 22px currentcolor}#hud-combo[data-tier="4"]{color:#fff0b0;transform:scale(1.3);text-shadow:0 0 26px currentcolor}.bar-combo{transition:height .2s ease-out}@media(prefers-reduced-motion:reduce){#game.shake{animation:none}#combo-break.flash{animation-duration:.2s}}#countdown{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;opacity:0;font-size:460px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums;color:var(--text);text-shadow:0 0 70px rgba(6,7,10,.75);will-change:opacity,transform}#countdown[hidden]{display:none}#countdown.tick{animation:countdown-tick 1s cubic-bezier(.16,.8,.3,1) forwards}@keyframes countdown-tick{0%{opacity:.55;transform:scale(1.45)}25%{opacity:.3;transform:scale(1)}to{opacity:.07;transform:scale(.97)}}@media(prefers-reduced-motion:reduce){#countdown.tick{animation-name:countdown-tick-flat}}@keyframes countdown-tick-flat{0%{opacity:.4}to{opacity:.1}}.overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:#06070ae6}.overlay[hidden]{display:none}.result-inner{display:flex;flex-direction:column;align-items:center;gap:26px;padding:60px;text-align:center;font-size:38px;line-height:1.5}.score-big{font-size:76px;font-weight:800;color:var(--gold)}.best-flag{font-size:36px;color:#b3e6ff}.result-buttons{display:flex;gap:30px;margin-top:40px}