:root{--bg: #f6f7f9;--surface: #ffffff;--surface-2: #eef1f5;--text: #14181f;--text-dim: #5b6472;--border: #d8dee7;--accent: #1f6feb;--accent-strong: #1558c0;--accent-soft: #dbe9ff;--ok: #177245;--err: #c02626;--err-soft: #ffe3e3;--warn: #8a5a00;--gold: #b57d00;--f1: #e5484d;--f2: #e8a33d;--f3: #46a758;--f4: #3e63dd;--f0: #8b8d98;--radius: 12px;--radius-lg: 18px;--shadow-sm: 0 1px 2px rgb(16 24 40 / .06), 0 1px 3px rgb(16 24 40 / .08);--shadow-md: 0 4px 12px rgb(16 24 40 / .08), 0 2px 4px rgb(16 24 40 / .04);--shadow-lg: 0 18px 40px rgb(16 24 40 / .12);--mono: "Cascadia Mono", "JetBrains Mono", "Consolas", "DejaVu Sans Mono", monospace}@media(prefers-color-scheme:dark){:root{--bg: #0f1216;--surface: #171b21;--surface-2: #1f242c;--text: #e8ecf2;--text-dim: #9aa4b2;--border: #2c333d;--accent: #6ea8fe;--accent-strong: #8bb9ff;--accent-soft: #1b2a44;--ok: #5bd18a;--err: #ff6b6b;--err-soft: #3a1d1d;--gold: #ffc857;--shadow-sm: 0 1px 2px rgb(0 0 0 / .4);--shadow-md: 0 6px 18px rgb(0 0 0 / .45);--shadow-lg: 0 22px 50px rgb(0 0 0 / .5)}}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5}body.font-sm{font-size:15px}body.font-lg{font-size:18px}a{color:var(--accent)}:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.app{max-width:1100px;margin:0 auto;padding:16px 16px 64px}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:8px;background:var(--surface);padding:8px 12px;border-radius:8px;z-index:10}.app-header{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding:14px 0 10px;margin-bottom:8px;border-bottom:1px solid var(--border)}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--text)}.brand-mark{width:34px;height:34px;border-radius:9px;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:800;font-size:.95rem;letter-spacing:-.02em;box-shadow:var(--shadow-sm)}.brand-text{display:flex;flex-direction:column;line-height:1.15}.app-title{font-size:1rem;font-weight:700;margin:0;color:var(--text)}.app-subtitle{color:var(--text-dim);font-size:.78rem}.nav{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}.nav a{padding:7px 12px;border-radius:999px;text-decoration:none;color:var(--text);background:var(--surface);border:1px solid var(--border);font-size:.9rem;transition:background .15s ease,border-color .15s ease,transform .15s ease}.nav a:hover{border-color:var(--accent);background:var(--accent-soft)}.nav a[aria-current=page]{background:var(--accent);border-color:var(--accent);color:#fff}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px 18px;margin-bottom:16px}.card h2{margin:0 0 8px;font-size:1.05rem}.card h3{margin:16px 0 8px;font-size:.95rem}.muted{color:var(--text-dim)}.small{font-size:.85rem}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.grid-2{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:16px}.btn{font:inherit;padding:9px 14px;border-radius:9px;border:1px solid var(--border);background:var(--surface-2);color:var(--text);cursor:pointer}.btn:hover{border-color:var(--accent)}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}.btn-ghost{background:transparent}.btn-danger{color:var(--err);border-color:var(--err);background:transparent}.block{margin-bottom:18px}.block-title{display:flex;align-items:baseline;gap:8px;margin:0 0 4px}.block-note{margin:0 0 10px;color:var(--text-dim);font-size:.85rem}.lesson-row{display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid var(--border);border-radius:10px;background:var(--surface);margin-bottom:6px;text-decoration:none;color:var(--text)}.lesson-row:hover{border-color:var(--accent);background:var(--accent-soft)}.lesson-row.is-done{border-left:4px solid var(--ok)}.lesson-title{flex:1;font-weight:500;color:var(--text);text-decoration:none}.lesson-title:hover{text-decoration:underline}.lesson-modes{display:flex;gap:4px;flex-wrap:wrap}.lesson-modes .chip{font-family:inherit;text-decoration:none;color:var(--text);font-size:.78rem;padding:2px 8px}.lesson-modes .chip:hover{border-color:var(--accent);background:var(--accent-soft)}.lesson-meta{color:var(--text-dim);font-size:.8rem;white-space:nowrap}.stars{color:var(--warn);letter-spacing:2px}.practice-card{position:relative}.text-display{font-family:var(--mono);font-size:1.35rem;line-height:2;white-space:pre-wrap;word-break:break-word;margin:8px 0 20px;padding:14px 16px;border:1px solid var(--border);border-radius:10px;background:var(--surface-2);min-height:120px}.text-display:focus{outline:3px solid var(--accent)}.char{border-radius:3px}.char.is-correct{color:var(--ok)}.char.is-wrong{color:var(--err);background:var(--err-soft);text-decoration:underline wavy var(--err)}.char.is-current{background:var(--accent-soft);box-shadow:inset 0 -3px 0 var(--accent)}.char.is-newline:after{content:"↵";color:var(--text-dim);font-size:.8em}.pause-banner{background:var(--err-soft);color:var(--err);border-radius:8px;padding:6px 10px;font-size:.85rem;display:inline-block;margin-bottom:8px}.metrics{display:flex;flex-wrap:wrap;gap:10px}.metric{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:8px 12px;min-width:104px}.metric-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.04em;color:var(--text-dim)}.metric-value{font-size:1.25rem;font-weight:700;font-variant-numeric:tabular-nums}.metric-value.is-big{font-size:1.8rem}.keyboard{--key-size: 42px;display:flex;flex-direction:column;gap:5px;align-items:flex-start;padding:12px;background:var(--surface-2);border:1px solid var(--border);border-radius:10px;overflow-x:auto}.kb-row{display:flex;gap:5px}.key{width:calc(var(--key-size) * var(--w, 1));height:var(--key-size);display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid var(--border);border-radius:7px;background:var(--surface);font-size:.8rem;line-height:1.05;position:relative}.key .shift-label{font-size:.62rem;color:var(--text-dim)}.key.finger-1{border-bottom:3px solid var(--f1)}.key.finger-2{border-bottom:3px solid var(--f2)}.key.finger-3{border-bottom:3px solid var(--f3)}.key.finger-4{border-bottom:3px solid var(--f4)}.key.finger-0{border-bottom:3px solid var(--f0)}.key.is-home:after{content:"";position:absolute;bottom:4px;width:14px;height:2px;background:var(--text-dim);border-radius:2px}.key.is-next{background:var(--accent);color:#fff;border-color:var(--accent);transform:translateY(1px)}.key.is-next .shift-label{color:#dfe9ff}.key.is-pressed{background:var(--accent-soft)}.key.is-uncalibrated{border-style:dashed;border-color:var(--warn)}.chart{width:100%;height:auto;max-height:260px;overflow:visible}.chart .axis{stroke:var(--border);stroke-width:1}.chart .grid-line{stroke:var(--border);stroke-dasharray:3 4}.chart .line{fill:none;stroke:var(--accent);stroke-width:2}.chart .dot{fill:var(--surface);stroke:var(--accent);stroke-width:2}.chart text{fill:var(--text-dim);font-size:11px}table{width:100%;border-collapse:collapse;font-size:.9rem}th,td{text-align:left;padding:7px 8px;border-bottom:1px solid var(--border)}th{color:var(--text-dim);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}.chip{display:inline-flex;gap:6px;align-items:center;font-family:var(--mono);background:var(--surface-2);border:1px solid var(--border);border-radius:999px;padding:4px 10px}.chip .k{font-weight:700}.calib-list{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.calib-item{font-family:var(--mono);border:1px solid var(--border);border-radius:7px;padding:4px 8px;background:var(--surface-2);font-size:.85rem}.calib-item.is-empty{border-style:dashed;border-color:var(--warn)}@media(prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.landing{display:block}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:40px;align-items:center;padding:28px 0 44px}.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:.78rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);border-radius:999px;padding:5px 12px;margin-bottom:16px}.hero h1{font-size:clamp(2rem,4.4vw,3.1rem);line-height:1.08;letter-spacing:-.02em;margin:0 0 16px}.hero h1 .accent{color:var(--accent)}.hero-lead{font-size:1.08rem;color:var(--text-dim);margin:0 0 24px;max-width:52ch}.hero-actions{display:flex;flex-wrap:wrap;gap:10px;align-items:center;margin-bottom:18px}.btn-lg{padding:13px 22px;font-size:1.02rem;border-radius:11px}.btn-primary:hover{background:var(--accent-strong);border-color:var(--accent-strong)}.trust-row{display:flex;flex-wrap:wrap;gap:8px 18px;list-style:none;padding:0;margin:0;color:var(--text-dim);font-size:.86rem}.trust-row li{display:flex;align-items:center;gap:6px}.tick{color:var(--ok);font-weight:700}.hero-visual{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:18px;box-shadow:var(--shadow-lg)}.hero-visual-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px;margin-bottom:10px}.hero-visual-line{font-family:var(--mono);font-size:1.1rem;line-height:1.6;padding:12px 14px;border-radius:10px;background:var(--surface-2);border:1px solid var(--border);margin-bottom:14px;white-space:pre-wrap}.hero-visual-line .done{color:var(--ok)}.hero-visual-line .now{background:var(--accent);color:#fff;border-radius:3px;padding:0 1px}.hero-visual-line .todo{color:var(--text-dim)}.keyboard--compact{--key-size: 26px;padding:9px;gap:4px}.keyboard--compact .key{font-size:.6rem;border-radius:5px}.keyboard--compact .key .shift-label{font-size:.5rem}.keyboard--compact .key:after{display:none}.hero-fingers{display:flex;justify-content:space-between;margin-top:10px;font-size:.75rem;color:var(--text-dim)}.landing-section{padding:40px 0;border-top:1px solid var(--border)}.section-head{max-width:62ch;margin-bottom:26px}.section-head h2{font-size:clamp(1.4rem,2.6vw,1.9rem);letter-spacing:-.015em;margin:0 0 10px}.section-head p{color:var(--text-dim);margin:0}.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}.feature{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow-sm)}.feature h3{margin:0 0 8px;font-size:1rem}.feature p{margin:0;color:var(--text-dim);font-size:.92rem}.feature-icon{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);font-size:1.1rem;font-weight:700;margin-bottom:12px}.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;counter-reset:step}.step{position:relative;padding-left:46px}.step:before{counter-increment:step;content:counter(step);position:absolute;left:0;top:0;width:32px;height:32px;border-radius:50%;background:var(--accent);color:#fff;display:grid;place-items:center;font-weight:700;font-size:.9rem}.step h3{margin:4px 0 6px;font-size:.98rem}.step p{margin:0;color:var(--text-dim);font-size:.9rem}.demo-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-md)}.demo-display{font-family:var(--mono);font-size:1.5rem;letter-spacing:.02em;line-height:1.7;padding:20px;border-radius:var(--radius);background:var(--surface-2);border:1px dashed var(--border);cursor:text;min-height:84px;display:block;white-space:pre-wrap;word-break:break-word}.demo-display:focus{outline:3px solid var(--accent);outline-offset:2px;border-style:solid}.demo-display .char.is-current{background:var(--accent);color:#fff;border-radius:3px;box-shadow:none}.demo-metrics{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:.85rem;color:var(--text-dim)}.demo-metrics strong{color:var(--text);font-variant-numeric:tabular-nums}.demo-hint{color:var(--text-dim);font-size:.85rem;margin:10px 0 0}.table-preview{overflow-x:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:4px 12px}.table-preview table{min-width:520px}.badge-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.badge-pill{font-size:.8rem;border-radius:999px;padding:5px 12px;border:1px solid var(--border);background:var(--surface-2);color:var(--text-dim)}.badge-pill.is-coming{border-style:dashed;color:var(--warn);border-color:var(--warn)}.stat-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:12px}.stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px}.stat-value{font-size:1.6rem;font-weight:700;letter-spacing:-.02em;font-variant-numeric:tabular-nums}.stat-label{font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-dim)}.landing-footer{border-top:1px solid var(--border);margin-top:30px;padding:26px 0 10px;color:var(--text-dim);font-size:.85rem;display:grid;gap:12px}.landing-footer a{color:var(--text)}.footer-links{display:flex;flex-wrap:wrap;gap:8px 18px;list-style:none;padding:0;margin:0}@media(max-width:900px){.hero{grid-template-columns:minmax(0,1fr);gap:28px;padding:16px 0 30px}.hero-visual{order:2}}@media(max-width:620px){.app{padding:12px 12px 48px}.landing-section{padding:28px 0}.nav a{font-size:.84rem;padding:6px 10px}}