:root{color-scheme:dark;--bg: #12111a;--surface: #1b1a26;--surface-2: #272536;--line: #34324a;--text: #f3efe6;--muted: #9a96ad;--major: #ffb547;--minor: #8fa8ff;--accent: var(--major);--on-accent: #1a1206;--chord: #e2557a;--fn-t: #4fd1a5;--fn-sd: #ffb547;--fn-d: #ff6b6b;--radius: 18px;--font: ui-rounded, "SF Pro Rounded", "Nunito", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif}app-root.is-minor{--accent: var(--minor);--on-accent: #0b1030}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}body{min-height:100dvh;background:radial-gradient(120% 60% at 50% -10%,color-mix(in oklab,var(--major) 10%,transparent),transparent 60%),var(--bg)}button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}app-root{display:block;padding:0 16px calc(24px + env(safe-area-inset-bottom))}.page{max-width:1120px;margin:0 auto;min-width:0}.rail{display:none}@media(min-width:1280px){app-root.has-ads{display:grid;grid-template-columns:160px minmax(0,1120px) 160px;justify-content:center;gap:24px}app-root.has-ads .rail{display:block;padding-top:72px}.ad-rail{display:block;position:sticky;top:16px;min-height:600px}}@media(min-width:1680px){app-root.has-ads{grid-template-columns:300px minmax(0,1120px) 300px}}.ad-placeholder{height:600px;display:grid;place-content:center;text-align:center;border:1px dashed var(--line);border-radius:12px;color:var(--muted);font-size:12px;letter-spacing:.08em;text-transform:uppercase}.topbar{position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:calc(10px + env(safe-area-inset-top)) 0 10px;margin-bottom:4px;background:color-mix(in oklab,var(--bg) 82%,transparent);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}.brand{color:inherit;text-decoration:none;display:flex;align-items:center;gap:8px;font-size:17px;letter-spacing:-.01em}.brand b{color:var(--accent);transition:color .3s}.brand svg{width:26px;height:26px;fill:none;stroke:var(--accent);stroke-width:2;stroke-linecap:round;transition:stroke .3s}.brand svg circle:not(:first-child){fill:var(--accent)}.seg-ctl{display:inline-flex;padding:3px;border-radius:999px;background:var(--surface);border:1px solid var(--line)}.seg-ctl button{padding:8px 18px;border-radius:999px;font-weight:650;color:var(--muted);transition:background .2s,color .2s}.seg-ctl button.on{background:var(--accent);color:var(--on-accent)}.seg-ctl.small button{padding:6px 12px;font-size:13px}.chips{display:flex;flex-wrap:wrap;justify-content:center;gap:6px;margin-top:10px}.chip{padding:6px 12px;border-radius:999px;border:1px solid var(--line);font-size:13px;color:var(--muted)}.chip.on{border-color:var(--accent);color:var(--accent);background:color-mix(in oklab,var(--accent) 12%,transparent)}.layout{display:grid;gap:16px}@media(min-width:900px){.layout{grid-template-columns:minmax(320px,400px) 1fr;align-items:start;gap:28px}.col-picker{position:sticky;top:64px}}.col-detail{display:grid;gap:16px}.hero{text-align:center;padding:8px 0 14px}.eyebrow{margin:0;font-size:11px;text-transform:uppercase;letter-spacing:.14em;color:var(--muted)}.hero .title{margin:0 0 6px;display:flex;flex-direction:column;align-items:center;gap:2px}.hero .key-name{font-size:clamp(34px,10vw,46px);line-height:1.05;font-weight:800;letter-spacing:-.03em;color:var(--accent);transition:color .3s}.intro{text-align:center;margin:6px 0 4px}.intro h1{margin:0;font-size:15px;font-weight:700}.intro p{margin:4px auto 0;max-width:46ch;font-size:13px;color:var(--muted);line-height:1.45}.meta{margin:0 0 14px;display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:6px;color:var(--muted);font-size:14px}.link{color:var(--muted);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}.link b{color:var(--text);font-weight:650}.hint{margin:10px 0 0;font-size:12px;color:var(--muted);text-align:center;line-height:1.45}.hint.left{text-align:left}.chord-txt{color:var(--chord)}.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px}.card-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}.card h2{margin:0;font-size:17px;font-weight:750;letter-spacing:-.01em}.play{display:inline-flex;align-items:center;gap:6px;padding:7px 14px 7px 10px;border-radius:999px;background:var(--accent);color:var(--on-accent);font-weight:700;font-size:13px}.play svg{width:16px;height:16px;fill:currentColor}.scale{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.scale li{position:relative;padding-bottom:24px}.note{width:100%;aspect-ratio:3 / 4;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);transition:transform .1s}@media(min-width:900px){.note{aspect-ratio:auto;padding:14px 0}}.note:active{transform:scale(.94)}.note .deg{font-size:11px;color:var(--muted);font-weight:700}.note .nm{font-size:clamp(13px,4vw,18px);font-weight:800;letter-spacing:-.02em}.note.tonic{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}.note.tonic .deg{color:inherit;opacity:.7}.step{font-size:11px;font-weight:700;color:var(--muted);padding:1px 6px;border-radius:6px;background:var(--bg);position:absolute;bottom:0;right:-3px;transform:translate(50%)}.step.wide{color:var(--chord)}.chords{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}@media(min-width:520px){.chords{grid-template-columns:repeat(7,1fr)}}.chord{--fn: var(--fn-t);position:relative;display:flex;flex-direction:column;align-items:center;gap:3px;padding:10px 4px 9px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);overflow:hidden;transition:background .2s,border-color .2s,transform .1s}.chord:before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--fn)}.chord[data-fn=SD],.legend [data-fn=SD]{--fn: var(--fn-sd)}.chord[data-fn=D],.legend [data-fn=D]{--fn: var(--fn-d)}.chord:active{transform:scale(.95)}.chord.on{background:color-mix(in oklab,var(--chord) 28%,var(--surface-2));border-color:var(--chord)}.roman{font-size:11px;font-weight:700;color:var(--fn);font-family:Georgia,Times New Roman,serif}.cname{font-size:clamp(14px,4.2vw,17px);font-weight:800;letter-spacing:-.02em;white-space:nowrap}.tones{display:flex;flex-wrap:wrap;justify-content:center;gap:0 3px;font-size:10px;color:var(--muted)}.legend{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:6px 14px;font-size:12px;color:var(--muted)}.legend li{--fn: var(--fn-t);display:flex;align-items:center;gap:6px}.legend i{width:14px;height:4px;border-radius:2px;background:var(--fn)}.progs{list-style:none;margin:0;padding:0;display:grid;gap:8px}@media(min-width:640px){.progs{grid-template-columns:1fr 1fr}}.prog{width:100%;display:flex;flex-direction:column;align-items:flex-start;gap:8px;padding:12px;border-radius:12px;background:var(--surface-2);border:1px solid var(--line);text-align:left}.prog.on{border-color:var(--accent)}.pname{display:flex;align-items:center;gap:6px;font-weight:700;font-size:14px}.pname svg{width:18px;height:18px;padding:3px;border-radius:50%;fill:var(--on-accent);background:var(--accent)}.pchords{display:flex;flex-wrap:wrap;gap:6px}.pc{padding:4px 9px;border-radius:8px;background:var(--bg);font-size:13px;font-weight:700;transition:background .15s,color .15s}.pc.now{background:var(--chord);color:#fff}.about{margin-top:28px;max-width:760px;line-height:1.65;font-size:15px;color:color-mix(in oklab,var(--text) 88%,var(--muted))}.about h1{font-size:28px;letter-spacing:-.02em;margin:8px 0 16px;color:var(--text)}.about h2{font-size:20px;letter-spacing:-.01em;margin:28px 0 8px;color:var(--text)}.about h3{font-size:16px;margin:24px 0 8px;color:var(--text)}.about p{margin:0 0 12px}.about a,.footer a{color:var(--accent);text-decoration:none}.about a:hover,.footer a:hover{text-decoration:underline}.about strong{color:var(--text)}.muted{color:var(--muted)}.formula{font-weight:700;color:var(--text);white-space:nowrap}.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:12px}.about table{width:100%;border-collapse:collapse;font-size:14px;white-space:nowrap}.about th,.about td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--line)}.about th{font-size:12px;font-weight:700;color:var(--muted);background:var(--surface)}.about tr:last-child td{border-bottom:0}.about .roman{color:var(--accent);font-size:14px}.plain,.related,.index ul,.footer ul{list-style:none;margin:0;padding:0}.plain li{margin-bottom:4px}.related{display:grid;gap:6px}.related li{display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline}.related .muted{font-size:13px}.index{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:4px 20px}.index h3{margin-top:12px}.index li{font-size:14px;line-height:1.9}.footer{margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-size:13px}.footer nav{display:grid;gap:16px}@media(min-width:640px){.footer nav{grid-template-columns:1fr 1fr}}.footer-title{margin:0 0 6px;font-weight:700}.footer ul{display:flex;flex-wrap:wrap;gap:4px 12px}.footer-legal{margin:20px 0 0;color:var(--muted)}@media(prefers-reduced-motion:reduce){*{transition:none!important}}