:root{--bg: #0b0b0b;--surface: #151515;--surface-2: #1e1e1e;--line: #242424;--line-strong: #353535;--text: #f2f2ef;--text-2: #a3a39e;--text-3: #6b6b66;--slow: #4fb8a6;--fast: #ff7a59;--danger: #ff6b6b;--warning: #e3b45c;--radius: 12px;--radius-sm: 8px;--gutter: 20px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic Medium", system-ui, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100%}html{-webkit-text-size-adjust:100%}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent;overscroll-behavior:none}button{font:inherit;color:inherit;background:none;border:none;cursor:pointer}button:disabled{cursor:default}input,select{font:inherit;color:inherit}a{color:inherit}:focus-visible{outline:2px solid var(--text-2);outline-offset:2px}.num{font-variant-numeric:tabular-nums;letter-spacing:-.02em}.icon{display:block;flex-shrink:0}.spinner{animation:spin .9s linear infinite;color:var(--text-2)}@keyframes spin{to{transform:rotate(360deg)}}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.app{min-height:100dvh;max-width:480px;margin:0 auto;padding:0 max(var(--gutter),env(safe-area-inset-right)) calc(32px + env(safe-area-inset-bottom)) max(var(--gutter),env(safe-area-inset-left));display:flex;flex-direction:column}.screen{display:flex;flex-direction:column;gap:28px;padding-top:8px}.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;height:calc(56px + env(safe-area-inset-top));padding-top:env(safe-area-inset-top);background:var(--bg)}.topbar__brand{font-size:15px;font-weight:600;letter-spacing:-.01em}.icon-btn{width:40px;height:40px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;color:var(--text-2);transition:background .15s,color .15s}.icon-btn:active{background:var(--surface-2)}.icon-btn:disabled{opacity:.4}.topbar .icon-btn{margin-right:-10px}.screen-header__title{font-size:26px;font-weight:600;letter-spacing:-.02em;line-height:1.25}.screen-header__sub{margin-top:6px;color:var(--text-2);font-size:14px}.section-label{font-size:12px;color:var(--text-3);margin-bottom:4px}.muted{color:var(--text-2);font-size:13px}.hint{color:var(--text-3);font-size:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 22px;border-radius:999px;font-size:15px;font-weight:500;text-decoration:none;transition:background .15s,opacity .15s,transform .1s}.btn:active:not(:disabled){transform:scale(.98)}.btn:disabled{opacity:.35}.btn--primary{background:var(--text);color:var(--bg)}.btn--secondary{border:1px solid var(--line-strong);color:var(--text)}.btn--secondary:active:not(:disabled){background:var(--surface-2)}.btn--text{min-height:40px;padding:0 4px;color:var(--text-2);font-weight:400;font-size:14px}.btn--danger-text{min-height:40px;padding:0 4px;color:var(--danger);font-weight:400;font-size:14px}.btn--block{width:100%}.btn--small{min-height:34px;padding:0 14px;font-size:13px}.bottom-bar{position:sticky;bottom:0;z-index:10;margin:0 calc(var(--gutter) * -1);padding:12px var(--gutter) calc(12px + env(safe-area-inset-bottom));background:var(--bg);border-top:1px solid var(--line)}.list{border-top:1px solid var(--line)}.list-row{display:flex;align-items:center;gap:12px;min-height:56px;padding:10px 0;border-bottom:1px solid var(--line);width:100%;text-align:left}button.list-row:active{background:var(--surface)}.list-row__main{flex:1;min-width:0}.list-row__label{font-size:15px}.list-row__sub{font-size:12px;color:var(--text-3);margin-top:1px}.list-row__value{font-size:17px;font-weight:500}.list-row__unit{font-size:12px;font-weight:400;color:var(--text-2);margin-left:3px}.list-row .icon{color:var(--text-3)}.list-row--stack{flex-direction:column;align-items:stretch;gap:10px}.list-row__head{display:flex;align-items:center;gap:12px}.dot{display:inline-block;width:8px;height:8px;border-radius:50%;flex-shrink:0}.dot--slow{background:var(--slow)}.dot--fast{background:var(--fast)}.field{display:flex;flex-direction:column;gap:8px}.field__label{font-size:13px;color:var(--text-2)}.input{width:100%;height:48px;padding:0 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-sm);font-size:16px;transition:border-color .15s}.input:focus{outline:none;border-color:var(--text-3)}.input--big{height:72px;font-size:40px;font-weight:500;font-variant-numeric:tabular-nums;text-align:center}.select{-moz-appearance:none;appearance:none;-webkit-appearance:none;background:transparent;border:none;color:var(--text);font-size:15px;text-align:right;text-align-last:right;max-width:60%;padding-right:2px}.stepper{display:flex;align-items:center;gap:4px}.stepper__btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line-strong);color:var(--text-2);display:inline-flex;align-items:center;justify-content:center}.stepper__btn:active:not(:disabled){background:var(--surface-2)}.stepper__btn:disabled{opacity:.3}.stepper__value{min-width:64px;text-align:center}.range{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:24px;background:transparent;--thumb-color: var(--text)}.range::-webkit-slider-runnable-track{height:2px;background:var(--line-strong);border-radius:1px}.range::-moz-range-track{height:2px;background:var(--line-strong)}.range::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;margin-top:-9px;border-radius:50%;background:var(--thumb-color);border:3px solid var(--bg)}.range::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--thumb-color);border:3px solid var(--bg)}.segmented{display:grid;grid-template-columns:1fr 1fr;padding:3px;background:var(--surface);border-radius:999px}.segmented__btn{height:36px;border-radius:999px;font-size:13px;color:var(--text-2);transition:background .15s,color .15s}.segmented__btn.is-active{background:var(--line-strong);color:var(--text)}.check{width:22px;height:22px;border-radius:50%;border:1.5px solid var(--line-strong);display:inline-flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--bg)}.check.is-on{background:var(--text);border-color:var(--text)}.notice{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--surface);font-size:13px;color:var(--text-2)}.notice__body{flex:1}.notice--error{color:var(--text);border-left:2px solid var(--danger);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.notice--warning{border-left:2px solid var(--warning);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.notice .icon-btn{width:28px;height:28px;margin:-4px -6px -4px 0}.toast-area{position:sticky;top:calc(56px + env(safe-area-inset-top));z-index:15;margin-bottom:8px}.panel{display:flex;flex-direction:column;gap:14px;padding:18px;border-radius:var(--radius);background:var(--surface)}.panel__head{display:flex;align-items:center;justify-content:space-between;gap:12px}.panel__title{font-size:15px;font-weight:500}.progress__bar{height:3px;background:var(--line-strong);border-radius:2px;overflow:hidden}.progress__fill{height:100%;background:var(--text);border-radius:2px;transition:width .3s ease}.progress__meta{display:flex;justify-content:space-between;margin-top:6px;font-size:12px;color:var(--text-3)}.stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}.stat__value{font-size:40px;font-weight:500;line-height:1.1}.stat__label{font-size:12px;color:var(--text-3);margin-top:4px}.auth{display:flex;flex-direction:column;gap:40px;padding-top:12vh}.auth__title{font-size:44px;font-weight:600;letter-spacing:-.035em;line-height:1.05}.auth__title span{color:var(--text-3)}.auth__lead{margin-top:16px;color:var(--text-2);font-size:15px}.auth__form{display:flex;flex-direction:column;gap:16px}.auth__steps{list-style:none;counter-reset:step;display:flex;flex-direction:column;gap:14px;font-size:13px;color:var(--text-2)}.auth__steps li{counter-increment:step;display:grid;grid-template-columns:22px 1fr}.auth__steps li:before{content:counter(step);color:var(--text-3);font-variant-numeric:tabular-nums}.auth__steps strong{color:var(--text);font-weight:500}.copy-row{display:flex;align-items:center;gap:8px;margin-top:8px;padding:8px 8px 8px 12px;background:var(--surface);border-radius:var(--radius-sm)}.copy-row code{flex:1;min-width:0;font-size:12px;color:var(--text);word-break:break-all}.seed-group+.seed-group{margin-top:12px}.seed-group__title{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--text-2);margin-bottom:6px}.seed-track{display:flex;gap:8px;font-size:13px;padding:3px 0 3px 16px}.seed-track__name{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.seed-track__artist{color:var(--text-3);white-space:nowrap}.bpm-pair{display:grid;grid-template-columns:1fr 1fr;gap:16px}.bpm-pair__label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}.bpm-pair__value{font-size:36px;font-weight:500;line-height:1.2;margin-top:4px}.timeline{display:flex;gap:3px;height:4px}.timeline__cell{flex:1;border-radius:2px}.timeline__cell--slow{background:var(--slow)}.timeline__cell--fast{background:var(--fast)}.counts{display:flex;gap:16px;font-size:12px;color:var(--text-2)}.counts span{display:inline-flex;align-items:center;gap:6px}.histogram__svg{display:block;width:100%;height:64px}.histogram__axis{display:flex;justify-content:space-between;margin-top:4px;font-size:11px;color:var(--text-3);font-variant-numeric:tabular-nums}.backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;background:#0009}.sheet{position:fixed;left:0;right:0;bottom:0;z-index:40;max-width:480px;max-height:92dvh;margin:0 auto;overflow-y:auto;padding:8px var(--gutter) calc(24px + env(safe-area-inset-bottom));background:var(--surface);border-radius:20px 20px 0 0;animation:sheet-in .22s ease-out}@keyframes sheet-in{0%{transform:translateY(24px);opacity:0}}.sheet__handle{width:36px;height:4px;border-radius:2px;background:var(--line-strong);margin:0 auto 12px}.sheet__head{display:flex;align-items:center;justify-content:space-between;min-height:40px;margin-bottom:8px}.sheet__title{font-size:17px;font-weight:600}.sheet .list,.sheet .list-row{border-color:var(--line-strong)}.sheet .segmented{background:var(--bg)}.sheet__body{display:flex;flex-direction:column;gap:20px}.menu-user{display:flex;align-items:center;justify-content:space-between;padding:4px 0 12px}.badge{font-size:11px;padding:2px 8px;border-radius:999px;border:1px solid var(--line-strong);color:var(--text-2)}.badge--warn{border-color:var(--warning);color:var(--warning)}.tuner__steps{display:flex;gap:16px;font-size:12px;color:var(--text-3)}.tuner__steps .is-active{color:var(--text)}.big-bpm{text-align:center}.big-bpm__label{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2)}.big-bpm__value{font-size:72px;font-weight:500;line-height:1.1}.big-bpm__unit{font-size:13px;color:var(--text-3)}.tuner__controls{display:flex;align-items:center;justify-content:center;gap:10px}.play-btn{width:64px;height:64px;border-radius:50%;background:var(--text);color:var(--bg);display:inline-flex;align-items:center;justify-content:center;transition:transform .1s}.play-btn:active{transform:scale(.96)}.play-btn--lg{width:68px;height:68px}.text-step{min-width:44px;height:44px;border-radius:999px;border:1px solid var(--line-strong);color:var(--text-2);font-size:14px;font-variant-numeric:tabular-nums}.text-step:active{background:var(--surface-2)}.tap-pad{height:160px;border-radius:var(--radius);border:1px solid var(--line-strong);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:var(--text-2);font-size:14px;user-select:none;-webkit-user-select:none;touch-action:manipulation}.tap-pad:active{background:var(--surface-2)}.workout{flex:1;display:flex;flex-direction:column;padding-top:calc(20px + env(safe-area-inset-top));user-select:none;-webkit-user-select:none}.workout__head{display:flex;justify-content:space-between;align-items:center;font-size:14px;color:var(--text-2)}.workout__phase{font-weight:500}.workout__rings{flex:1;display:flex;align-items:center;justify-content:center;padding:24px 0;min-height:300px}.workout__rings svg{width:min(78vw,300px);height:auto;overflow:visible}.workout__time{font-size:54px;font-weight:500}.workout__bpm-btn{display:inline-flex;align-items:center;gap:4px;margin:2px auto 0;padding:4px 10px;border-radius:999px;color:var(--text-2);font-size:13px}.workout__bpm-btn:active{background:var(--surface-2)}.workout__center{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%}.workout__track{display:flex;align-items:center;gap:12px;min-height:52px;margin-bottom:24px}.workout__art{width:48px;height:48px;border-radius:6px;background:var(--surface-2);object-fit:cover;flex-shrink:0}.workout__track-text{flex:1;min-width:0}.workout__track-name{font-size:15px;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.workout__track-artist{font-size:13px;color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.like-btn.is-liked{color:var(--text)}.like-btn.is-liked path{fill:currentColor}.workout__controls{display:flex;align-items:center;justify-content:space-between;padding:0 24px;margin-bottom:8px}.workout__controls .icon-btn{width:52px;height:52px;color:var(--text)}.workout__controls .icon-btn--quiet{color:var(--text-2)}.workout__issue{margin-bottom:20px}.workout__issue-actions{display:flex;gap:8px;margin-top:12px}.workout__issue-actions .btn{flex:1}.finished{display:flex;flex-direction:column;gap:36px;padding-top:10vh}.finished__title{font-size:32px;font-weight:600;letter-spacing:-.03em;line-height:1.2}.loading{flex:1;display:flex;align-items:center;justify-content:center;min-height:60vh}