:root{color-scheme:light;--bg: #f4f7fb;--panel: #ffffff;--ink: #1d2530;--muted: #697386;--line: #d9e1ec;--accent: #1b8a7a;--accent-strong: #0f6e62;--warn: #d95f3d;--key: #ffffff;--key-shadow: #b7c4d4;--left-index: #4f80ff;--left-middle: #7b61ff;--left-ring: #b45ad4;--left-pinky: #c1488b;--right-index: #19a974;--right-middle: #e0a300;--right-ring: #e56b6f;--right-pinky: #2b9fd8}*{box-sizing:border-box}body{margin:0;min-height:100vh;overflow:hidden;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input{font:inherit}.app-shell{width:min(1160px,calc(100vw - 32px));height:100svh;margin:0 auto;padding:14px 0;display:grid;grid-template-rows:auto auto auto minmax(0,1fr);gap:10px}.topbar,.practice-panel,.stats-row,.keyboard-section{background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:0 16px 36px #23365214}.topbar{display:flex;justify-content:space-between;gap:20px;align-items:center;padding:14px 20px}.eyebrow{margin:0 0 4px;color:var(--accent-strong);font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}h1,h2,p{margin:0}h1{font-size:clamp(1.35rem,2.6vw,1.9rem)}.header-controls{display:flex;align-items:end;gap:10px}.lesson-picker{display:grid;gap:4px;color:var(--muted);font-size:.82rem;font-weight:800}#modeSelect{min-width:260px;height:40px;border:1px solid var(--accent);border-radius:8px;background:#e8f7f4;color:var(--accent-strong);cursor:pointer;padding:0 12px;font-weight:800}.secondary-button{min-height:40px;border:1px solid var(--line);border-radius:8px;background:#f9fbfd;color:var(--ink);cursor:pointer;padding:0 14px;font-weight:700}.compact-button{min-height:40px;white-space:nowrap}.secondary-button:hover{border-color:var(--accent);background:#e8f7f4;color:var(--accent-strong)}.practice-panel{display:flex;flex-direction:column;gap:14px;padding:20px 24px;position:relative}.prompt-area{min-width:0;width:100%}.prompt-meta{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-weight:700;font-size:.95rem}.prompt{min-height:100px;display:flex;justify-content:center;align-items:center;flex-wrap:wrap;font-size:clamp(3.4rem,8vw,6rem);font-weight:900;line-height:1;text-align:center;overflow-wrap:anywhere}.prompt.sequence{align-content:center;font-size:clamp(1.7rem,3.6vw,3.2rem);line-height:1.2}.prompt span{color:var(--ink);transition:color .12s ease,text-shadow .12s ease,transform .12s ease}.prompt .done{color:#8fa0b4}.prompt .next{color:var(--warn);text-shadow:0 0 18px rgba(224,168,0,.28)}.roman{min-height:38px;color:var(--accent-strong);font-size:1.85rem;font-weight:900;text-align:center;overflow-wrap:anywhere;margin-bottom:8px}.roman .done{color:#95a1b2}.roman .next{color:var(--warn);text-decoration:underline;text-underline-offset:6px}.progress-track{height:10px;overflow:hidden;border-radius:999px;background:#e8edf5}.progress-fill{width:0%;height:100%;border-radius:inherit;background:var(--accent);transition:width .12s ease}#typingInput{position:absolute;top:0;left:0;width:1px;height:1px;opacity:0;pointer-events:none;border:none;outline:none;background:transparent;z-index:-1}#typingInput:focus{box-shadow:none}.feedback{min-height:24px;margin-top:12px;color:var(--muted);line-height:1.5;font-size:.95rem;text-align:center}.feedback.good{color:var(--accent-strong);font-weight:800}.feedback.bad{color:var(--warn);font-weight:800}.metronome{display:flex;justify-content:center;align-items:center;width:100%;margin-top:8px;padding-top:14px;border-top:1px solid var(--line)}.metronome label{display:grid;gap:3px;margin:0;color:var(--muted);font-size:.72rem;font-weight:800}.metronome input[type=number]{width:100%;height:34px;border:1px solid var(--line);border-radius:8px;padding:0 8px;font-weight:900}.metro-sound{justify-items:center}.metro-sound input{width:18px;height:18px}.metro-beat{width:28px;height:28px;border-radius:50%;border:2px solid #b8c2d1;background:#eef2f7;transition:transform 80ms ease,background 80ms ease,border-color 80ms ease}.metro-beat.is-on{border-color:var(--accent)}.metro-beat.pulse{transform:scale(1.22);border-color:var(--warn);background:#fff2bd}.stats-row{display:grid;grid-template-columns:repeat(6,minmax(80px,1fr));align-items:stretch;gap:12px;padding:16px 12px;background:#f4f7fb;border-radius:12px;border:1px solid var(--line);margin-top:14px}.stat{min-height:80px;border:1px solid var(--line);border-radius:10px;padding:8px 10px;background:#fff;box-shadow:0 2px 4px #23365208;transition:all .2s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;justify-content:space-between;position:relative}.stat:hover{transform:translateY(-2px);box-shadow:0 6px 14px #23365214}.stat span{display:block;color:var(--muted);font-size:.72rem;font-weight:800;text-transform:uppercase;letter-spacing:.03em;white-space:nowrap}.stat strong{display:block;font-size:1.35rem;font-weight:800;color:var(--ink);line-height:1.1;font-family:monospace}.tooltip-trigger{position:absolute;top:8px;right:8px;display:flex;align-items:center;justify-content:center;width:15px;height:15px;border-radius:50%;border:1px solid var(--muted);background:transparent;color:var(--muted);font-size:.68rem;font-family:Georgia,Times New Roman,serif;font-style:italic;font-weight:700;cursor:help;transition:all .2s cubic-bezier(.4,0,.2,1);line-height:1;z-index:10;opacity:.7}.tooltip-trigger:hover{background:var(--accent);border-color:var(--accent);color:#fff!important;opacity:1;transform:scale(1.05)}.tooltip-trigger:before{content:attr(data-tooltip);position:absolute;bottom:150%;left:50%;transform:translate(-50%) translateY(8px);width:220px;padding:10px 12px;border-radius:8px;background:#1d2530f2;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);color:#fff!important;font-size:.72rem;line-height:1.45;text-align:left;white-space:normal;box-shadow:0 8px 24px #0003;opacity:0;pointer-events:none;transition:all .2s cubic-bezier(.4,0,.2,1);z-index:100;font-weight:500;text-transform:none;letter-spacing:normal}.tooltip-trigger:after{content:"";position:absolute;bottom:120%;left:50%;transform:translate(-50%) translateY(8px);border-width:6px;border-style:solid;border-color:rgba(29,37,48,.95) transparent transparent transparent;opacity:0;pointer-events:none;transition:all .2s cubic-bezier(.4,0,.2,1);z-index:100}.tooltip-trigger:hover:before,.tooltip-trigger:hover:after{opacity:1;transform:translate(-50%) translateY(0)}.badge-important{display:inline-flex;align-items:center;justify-content:center;font-size:.56rem;font-weight:900;color:#fff!important;background:#d95f3d;padding:1px 5px;border-radius:4px;letter-spacing:.03em;box-shadow:0 2px 5px #d95f3d4d;vertical-align:middle;line-height:1.2;border:1px solid rgba(255,255,255,.15);white-space:nowrap;animation:badge-pulse 2.5s infinite ease-in-out}@keyframes badge-pulse{0%,to{transform:scale(1);box-shadow:0 2px 4px #d95f3d33}50%{transform:scale(1.04);box-shadow:0 4px 8px #d95f3d66}}.rank-badge{display:inline-flex;align-items:center;gap:3px;font-size:.68rem;font-weight:800;padding:1px 6px;border-radius:4px;margin-top:2px;transition:all .3s ease;width:fit-content;text-shadow:none;line-height:1.3}.rank-egg{background:#eef2f7;color:#4a5568;border:1px solid #cbd5e0}.rank-seed{background:#f0fdf4;color:#166534;border:1px solid #bbf7d0}.rank-laptop{background:#eff6ff;color:#1e40af;border:1px solid #bfdbfe;box-shadow:0 0 8px #1e40af1a}.rank-fire{background:#fff7ed;color:#c2410c;border:1px solid #ffedd5;box-shadow:0 0 10px #c2410c26}.rank-rocket{background:#faf5ff;color:#6b21a8;border:1px solid #f3e8ff;box-shadow:0 0 12px #6b21a840;animation:rocket-glow 1.5s infinite alternate ease-in-out}@keyframes rocket-glow{0%{box-shadow:0 0 6px #6b21a833}to{box-shadow:0 0 16px #6b21a880}}.stat:has(#correctCount){border-left:4px solid #1b8a7a;background:linear-gradient(180deg,#fff,#1b8a7a08)}.stat:has(#correctCount) strong{color:#0f6e62}.stat:has(#missCount){border-left:4px solid #d95f3d;background:linear-gradient(180deg,#fff,#d95f3d08)}.stat:has(#missCount) strong{color:#c24b2a}.stat:has(#streakCount){border-left:4px solid #e5a93c;background:linear-gradient(180deg,#fff,#e5a93c08)}.stat:has(#streakCount) strong{color:#bd8420}.stat:has(#keySpeedCount){border-left:4px solid #4a77e5;background:linear-gradient(180deg,#fff,#4a77e508)}.stat:has(#keySpeedCount) strong{color:#2e55bd}.stat:has(#speedCount){border-left:4px solid #7c4ae5;background:linear-gradient(180deg,#fff,#7c4ae508)}.stat:has(#speedCount) strong{color:#592ebd}.stat:has(#avgCharsCount){border-left:4px solid #4ab5e5;background:linear-gradient(180deg,#fff,#4ab5e508)}.stat:has(#avgCharsCount) strong{color:#278abd}.stat:has(#predictedCharsCount){border-left:4px solid #b45ad4;background:linear-gradient(180deg,#fff,#b45ad408)}.stat:has(#predictedCharsCount) strong{color:#923eb2}.keyboard-section{min-height:0;padding:14px 20px 12px;overflow:hidden}.results-page{min-height:0;overflow:auto;padding:16px 18px;background:var(--panel);border:1px solid var(--line);border-radius:8px;box-shadow:0 16px 36px #23365214}.results-head{display:flex;justify-content:space-between;gap:16px;align-items:start;margin-bottom:12px}.results-head p{margin-top:2px;color:var(--muted);font-size:.9rem}.results-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:14px}.result-card,.set-row{border:1px solid var(--line);border-radius:8px;background:#fbfcff}.result-card{padding:10px}.result-card h3,.set-results h3,.problem-list h3{margin:0 0 8px;font-size:1rem}.result-card p{color:var(--muted);font-size:.82rem;line-height:1.5}.set-table{display:grid;gap:6px}.set-row{display:grid;grid-template-columns:92px 1.3fr repeat(4,1fr) auto;align-items:center;gap:8px;padding:8px 10px;font-size:.86rem}.set-row strong{display:grid;gap:2px;font-size:.92rem}.set-row small{color:var(--muted);font-size:.72rem;font-weight:700}.practice-set{min-height:30px;border:1px solid var(--accent);border-radius:8px;background:#e8f7f4;color:var(--accent-strong);font-weight:800;cursor:pointer}.problem-list{margin-top:14px}.problem-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.problem-set-card{border:1px solid var(--line);border-radius:8px;background:#fbfcff}.problem-set-card summary{display:grid;gap:2px;padding:9px 10px;cursor:pointer;font-weight:800}.problem-set-card summary span{color:var(--muted);font-size:.76rem;font-weight:700}.problem-set-card ol{display:grid;grid-template-columns:repeat(2,1fr);gap:4px 8px;margin:0;padding:0 10px 10px 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var(--key-shadow);border-radius:8px;background:var(--key);color:var(--ink);display:grid;place-items:center;font-size:1.08rem;font-weight:900;transition:transform 80ms ease,background 80ms ease,border-color 80ms ease}.keyboard-boundaries{position:absolute;top:0;right:0;bottom:0;left:0;z-index:1;pointer-events:none;overflow:visible}.keyboard-boundary{fill:none;stroke:#ff1f1f;stroke-width:3;stroke-linecap:square;stroke-linejoin:miter;vector-effect:non-scaling-stroke}.key.wide{flex-basis:78px}.key.space{flex-basis:286px}.key:after{content:attr(data-finger);position:absolute;bottom:4px;font-size:.5rem;color:var(--muted);font-weight:800}.key.rest:before{content:"";position:absolute;top:6px;width:7px;height:7px;border-radius:50%;background:currentColor}.key.active{transform:translateY(3px);border-bottom-width:1px;background:#fff7e8;border-color:#f2b84b}.key.correct{background:#e8f7f4;border-color:var(--accent)}.key.dormant,.key.kana-muted{visibility:visible;opacity:.28;filter:grayscale(.25)}.key.lesson-key,.key.chord-key,.key.target{opacity:1;filter:none}.key.left-index,.finger.left-index{color:var(--left-index)}.key.left-index{background:color-mix(in srgb,var(--left-index) 16%,white);border-color:color-mix(in srgb,var(--left-index) 45%,var(--line))}.key.left-middle,.finger.left-middle{color:var(--left-middle)}.key.left-middle{background:color-mix(in srgb,var(--left-middle) 16%,white);border-color:color-mix(in srgb,var(--left-middle) 45%,var(--line))}.key.left-ring,.finger.left-ring{color:var(--left-ring)}.key.left-ring{background:color-mix(in srgb,var(--left-ring) 16%,white);border-color:color-mix(in srgb,var(--left-ring) 45%,var(--line))}.key.left-pinky,.finger.left-pinky{color:var(--left-pinky)}.key.left-pinky{background:color-mix(in srgb,var(--left-pinky) 16%,white);border-color:color-mix(in srgb,var(--left-pinky) 45%,var(--line))}.key.right-index,.finger.right-index{color:var(--right-index)}.key.right-index{background:color-mix(in srgb,var(--right-index) 16%,white);border-color:color-mix(in srgb,var(--right-index) 45%,var(--line))}.key.right-middle,.finger.right-middle{color:var(--right-middle)}.key.right-middle{background:color-mix(in srgb,var(--right-middle) 18%,white);border-color:color-mix(in srgb,var(--right-middle) 45%,var(--line))}.key.right-ring,.finger.right-ring{color:var(--right-ring)}.key.right-ring{background:color-mix(in srgb,var(--right-ring) 16%,white);border-color:color-mix(in srgb,var(--right-ring) 45%,var(--line))}.key.right-pinky,.finger.right-pinky{color:var(--right-pinky)}.key.right-pinky{background:color-mix(in srgb,var(--right-pinky) 16%,white);border-color:color-mix(in srgb,var(--right-pinky) 45%,var(--line))}.key.target{z-index:4;outline:5px solid rgba(255,212,74,.55);border-color:#ff6b2b;background:#fff2a8;box-shadow:0 0 0 3px #ff6b2b38,0 0 18px #ffc400a6,0 8px 18px #23365224;transform:translateY(-2px)}.key.chord-key{z-index:3;outline:3px solid rgba(255,212,74,.42);border-color:#f5b936;background:#fff8c8;box-shadow:0 0 14px #ffd23a80}.key.current-key:before{content:"";position:absolute;top:6px;right:6px;bottom:6px;left:6px;border:4px solid #ff3b30;border-radius:999px;z-index:2;pointer-events:none}.key.rest.current-key:before{top:6px;right:6px;bottom:6px;left:6px;width:auto;height:auto;background:transparent}.finger-legend{display:none;flex-wrap:wrap;gap:6px 14px;margin-top:10px;color:var(--muted);font-size:.82rem;font-weight:700}@media(min-height:900px){.finger-legend{display:flex}}.finger-legend span{display:inline-flex;align-items:center;gap:6px}.finger{display:inline-block;width:12px;height:12px;border-radius:50%;background:currentColor}@media(max-width:860px){body{overflow:auto}.app-shell{height:auto;min-height:100svh}.topbar,.section-head{display:block}.lesson-picker{margin-top:12px}#modeSelect{width:100%;min-width:0}.practice-panel{grid-template-columns:1fr}.stats-row{grid-template-columns:repeat(2,1fr)}.secondary-button{grid-column:1 / -1}.layout-note{margin-top:12px}}@media(max-height:820px)and (min-width:861px){.app-shell{width:min(1120px,calc(100vw - 24px));padding:8px 0;gap:8px}.topbar{padding:10px 16px}.eyebrow{display:none}h1{font-size:1.45rem}.practice-panel{padding:12px 16px}.prompt{min-height:70px;font-size:4.3rem}.roman{min-height:30px;font-size:1.35rem}.stats-row{padding:8px}.stat{min-height:48px}.keyboard-section{padding:10px 16px}.section-head{margin-bottom:8px}.section-head p,.finger-legend{display:none}.key-row{min-width:0}.key.wide{flex-basis:78px}.key.space{flex-basis:280px}}.drive-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:9999;background:#1d25307a;backdrop-filter:blur(5px);-webkit-backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;padding:24px}.overlay-content{background:var(--panel);border:1px solid var(--line);box-shadow:0 24px 56px #23365229;border-radius:12px;padding:36px 32px;max-width:440px;width:100%;text-align:center}.overlay-content h2{font-size:1.45rem;font-weight:800;margin:0 0 12px;color:var(--ink);line-height:1.3}.overlay-content p{color:var(--muted);font-size:.92rem;line-height:1.6;margin:0 0 24px}.primary-button{width:100%;min-height:46px;background:var(--accent);color:#fff;border:none;border-radius:8px;font-weight:800;font-size:.98rem;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:10px;transition:background .15s ease,transform .1s ease;box-shadow:0 4px 12px #1b8a7a3d}.primary-button:hover{background:var(--accent-strong)}.primary-button:active{transform:scale(.98)}.google-icon{flex-shrink:0;background:#fff;border-radius:50%;padding:2px}.ranking-stats{animation:slideDown .3s ease-out}@keyframes slideDown{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.ranking-result-card{box-shadow:inset 0 2px 4px #23365208}.ranking-row{display:grid;grid-template-columns:48px 1.5fr repeat(3,1fr) 1.2fr;align-items:center;gap:8px;padding:10px 14px;font-size:.9rem;border:1px solid var(--line);border-radius:8px;background:#fbfcff;margin-bottom:6px;transition:transform .2s,box-shadow .2s}.ranking-row:hover{transform:translateY(-1px);box-shadow:0 4px 12px #2336520d;background:#fff}.ranking-badge{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;font-weight:800;font-size:.85rem;background:#eef2f7;color:var(--muted)}.ranking-row.gold{border-color:gold;background:#fffdf0}.ranking-row.gold .ranking-badge{background:gold;color:#8c7300;box-shadow:0 2px 6px #ffd70066}.ranking-row.silver{border-color:silver;background:#f7f9fa}.ranking-row.silver .ranking-badge{background:silver;color:#555;box-shadow:0 2px 6px #c0c0c066}.ranking-row.bronze{border-color:#cd7f32;background:#faf6f2}.ranking-row.bronze .ranking-badge{background:#cd7f32;color:#7c4412;box-shadow:0 2px 6px #cd7f3266}.ranking-name{font-weight:800;color:var(--ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.ranking-score{font-weight:900;color:#d95f3d;font-size:1.05rem}.retry-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#f4f7fbe6;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:100;border-radius:8px;animation:retry-fade-in .3s cubic-bezier(.4,0,.2,1)}.retry-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 32px;border-radius:12px;background:#fff;box-shadow:0 12px 36px #23365226;border:1px solid var(--line);text-align:center;max-width:340px;width:90%;animation:retry-scale-up .35s cubic-bezier(.34,1.56,.64,1)}.retry-icon{font-size:2.2rem;margin-bottom:8px;display:inline-block;animation:spin-slow 16s infinite linear}.retry-card h3{margin:0 0 6px;font-size:1.25rem;color:var(--accent-strong);font-weight:800}.retry-card p{margin:0 0 18px;font-size:.88rem;color:var(--muted);font-weight:700;line-height:1.4}.retry-card button{font-size:1.05rem;font-weight:800;padding:10px 24px;border-radius:30px;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-strong) 100%);color:#fff;border:none;cursor:pointer;box-shadow:0 6px 16px #1b8a7a40;transition:all .2s;display:inline-flex;align-items:center;gap:6px}.retry-card button:hover{transform:translateY(-2px);box-shadow:0 8px 20px #1b8a7a59}@keyframes retry-fade-in{0%{opacity:0}to{opacity:1}}@keyframes retry-scale-up{0%{transform:scale(.9);opacity:0}to{transform:scale(1);opacity:1}}@keyframes spin-slow{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.ranking-row.my-score{border:2px solid var(--accent)!important;background:linear-gradient(90deg,#1b8a7a14,#1b8a7a05)!important;box-shadow:0 4px 12px #1b8a7a26!important;transform:scale(1.005);z-index:5}.ranking-row.my-score .ranking-badge{background:var(--accent)!important;color:#fff!important}