/* Tonehole — design system. Light/dark via prefers-color-scheme + [data-theme] override. */
:root{
  --bg:#f6f2ea; --bg-2:#efe8dc; --surface:#fffdf9; --surface-2:#faf6ef; --ink:#161b22; --ink-2:#3a4350; --muted:#677180;
  --line:#e3dacb; --line-2:#d5c9b5; --accent:#c48a1c; --accent-ink:#8a5d06; --accent-2:#0f6b6b; --accent-soft:#f7e7c4;
  --good:#1f8a4c; --bad:#c2410c; --shadow:0 1px 2px rgba(30,25,15,.06),0 8px 24px -12px rgba(30,25,15,.18);
  --c-wood:#c48a1c; --c-brass:#d4a017; --c-strings:#b5523b; --c-plucked:#7a5bb5; --c-keys:#2f6fb0; --c-perc:#2c8f7a;
  --radius:16px; --radius-s:10px; --maxw:1200px;
  --f-display:"Fraunces",Georgia,"Times New Roman",serif; --f-body:"Inter",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:ui-monospace,"SFMono-Regular",Consolas,"Liberation Mono",monospace;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#0d131b; --bg-2:#111a24; --surface:#151e29; --surface-2:#1a2532; --ink:#ece8e1; --ink-2:#c9cfd8; --muted:#94a0b0;
  --line:#253141; --line-2:#334255; --accent:#e3ac4a; --accent-ink:#f0c879; --accent-2:#4fb8ad; --accent-soft:#33291a;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6); color-scheme:dark;}}
:root[data-theme="dark"]{
  --bg:#0d131b; --bg-2:#111a24; --surface:#151e29; --surface-2:#1a2532; --ink:#ece8e1; --ink-2:#c9cfd8; --muted:#94a0b0;
  --line:#253141; --line-2:#334255; --accent:#e3ac4a; --accent-ink:#f0c879; --accent-2:#4fb8ad; --accent-soft:#33291a;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px -14px rgba(0,0,0,.6); color-scheme:dark;}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--f-body);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}
img,svg{max-width:100%}
img{height:auto}
a{color:var(--accent-2);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--accent-ink)}
h1,h2,h3,.h3,.h4{font-family:var(--f-display);font-weight:650;line-height:1.15;letter-spacing:-.01em;color:var(--ink);margin:0 0 .5em}
h1{font-size:clamp(2rem,4.6vw,3.4rem)}
h2{font-size:clamp(1.35rem,2.4vw,1.8rem);margin-top:1.4em}
h3,.h3{font-size:1.2rem}
.h4{font-size:1.02rem;font-family:var(--f-body);font-weight:700;letter-spacing:0}
p{margin:0 0 1em}
code,pre,.mono{font-family:var(--f-mono);font-size:.92em}
.muted{color:var(--muted)} .small{font-size:.875rem} .big{font-size:1.15rem}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 16px}
@media(min-width:720px){.wrap{padding:0 28px}}
.narrow{max-width:760px}
.center{text-align:center}
.skip{position:absolute;left:-999px;top:0;background:var(--accent);color:#000;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:2px;border-radius:4px}

/* ---------- header */
.hdr{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:saturate(1.4) blur(12px);-webkit-backdrop-filter:saturate(1.4) blur(12px);border-bottom:1px solid var(--line)}
.hdr-in{display:flex;align-items:center;gap:18px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:650 1.25rem/1 var(--f-display)}
.logo{width:32px;height:32px;flex:none}
.logo rect{fill:var(--accent)} .logo circle{fill:var(--bg)} .logo path{fill:none;stroke:var(--bg);stroke-width:2.2;stroke-linecap:round}
.nav{margin-left:auto}
.nav>ul{display:flex;gap:2px;list-style:none;margin:0;padding:0}
.nav-i{position:relative}
.nav-a{display:block;padding:8px 12px;border-radius:999px;color:var(--ink-2);text-decoration:none;font-weight:550;font-size:.95rem}
.nav-a:hover,.nav-i.on>.nav-a{background:var(--surface-2);color:var(--ink)}
.drop{position:absolute;top:100%;left:50%;transform:translate(-50%,6px);min-width:240px;padding:8px;background:var(--surface);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transition:.16s ease}
.drop ul{list-style:none;margin:0;padding:0}
.drop a{display:block;padding:8px 12px;border-radius:9px;color:var(--ink);text-decoration:none;font-size:.93rem}
.drop a:hover{background:var(--surface-2)}
.nav-i:hover .drop,.nav-i:focus-within .drop{opacity:1;visibility:visible;transform:translate(-50%,2px)}
.hdr-act{display:flex;gap:4px}
.icon-btn{display:inline-grid;place-items:center;width:40px;height:40px;border-radius:999px;border:1px solid transparent;background:none;color:var(--ink);cursor:pointer;font:inherit}
.icon-btn:hover{background:var(--surface-2);border-color:var(--line)}
.icon-btn svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round}
.icon-btn.big{width:56px;height:56px;font-size:1.6rem}
.menu-btn{display:none}
@media(max-width:1060px){
  .menu-btn{display:inline-grid}
  .nav{position:fixed;inset:64px 0 0 0;background:var(--bg);overflow:auto;padding:12px 16px 40px;display:none;margin:0}
  .nav.open{display:block}
  .nav>ul{flex-direction:column}
  .nav-a{font-size:1.1rem;padding:12px 8px}
  .drop{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;border:0;padding:0 0 8px 12px;background:none;min-width:0}
  .drop ul{display:grid;grid-template-columns:1fr 1fr;gap:2px}
  .hdr-act{margin-left:auto}
}

/* ---------- search overlay */
.search-ov{position:fixed;inset:0;z-index:80;background:rgba(10,14,20,.45);backdrop-filter:blur(4px);display:grid;place-items:start center;padding:10vh 16px 16px}
.search-ov[hidden]{display:none}
.search-box{width:min(680px,100%);background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);padding:14px}
.search-box input,#pageSearch{width:100%;font:500 1.1rem var(--f-body);padding:14px 16px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface-2);color:var(--ink)}
.search-res{list-style:none;margin:10px 0 0;padding:0;max-height:55vh;overflow:auto}
.search-res li a{display:block;padding:10px 12px;border-radius:10px;text-decoration:none;color:var(--ink)}
.search-res li a:hover,.search-res li a.sel{background:var(--accent-soft)}
.search-res b{display:block;font-weight:600}
.search-res span{font-size:.82rem;color:var(--muted)}
.search-res .sec{float:right;font-size:.72rem;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-ink)}
.search-res.big li a{padding:14px;border-bottom:1px solid var(--line);border-radius:0}
.hint{margin:10px 4px 2px;font-size:.82rem;color:var(--muted)}

/* ---------- breadcrumbs & heroes */
.crumbs ol{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:18px auto 0;padding:0;font-size:.85rem;color:var(--muted)}
.crumbs li+li::before{content:"›";margin-right:6px;color:var(--line-2)}
.crumbs a{color:var(--muted);text-decoration:none}
.crumbs a:hover{color:var(--accent-ink)}
.page-hero{padding:28px 16px 18px}
@media(min-width:720px){.page-hero{padding:36px 28px 22px}}
.kicker{font:700 .76rem/1 var(--f-body);text-transform:uppercase;letter-spacing:.14em;color:var(--accent-ink);margin:0 0 12px}
.lead{font-size:1.14rem;color:var(--ink-2);max-width:780px}
.home-hero{position:relative;overflow:hidden;padding:42px 0 26px;background:radial-gradient(1200px 500px at 85% -10%,var(--accent-soft),transparent 60%),radial-gradient(800px 400px at -10% 110%,color-mix(in srgb,var(--accent-2) 14%,transparent),transparent 60%)}
.hero-grid{display:grid;grid-template-columns:1.25fr .75fr;gap:36px;align-items:center}
.home-hero h1{font-size:clamp(2.4rem,6vw,4.6rem);line-height:1.02;margin-bottom:.35em}
.home-hero h1 em{font-style:italic;color:var(--accent-ink)}
.hero-search{display:flex;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--line-2);border-radius:999px;padding:6px 6px 6px 16px;box-shadow:var(--shadow);max-width:640px;margin:22px 0 16px}
.hero-search svg{width:20px;height:20px;flex:none;fill:none;stroke:var(--muted);stroke-width:2}
.hero-search input{flex:1;min-width:0;border:0;background:none;font:500 1.02rem var(--f-body);color:var(--ink);padding:10px 4px;outline:none}
.page-hero .hero-search,.center .hero-search{margin-left:0}
.center .hero-search{margin:22px auto}
.hero-svg .ring{fill:none;stroke:var(--line-2);stroke-width:1}
.hero-svg .ring.r2{stroke-dasharray:4 6}
.hero-svg .hl{stroke:var(--line-2);stroke-width:1.2}
.hero-svg .wave{fill:none;stroke:url(#hg);stroke-width:5;stroke-linecap:round;stroke-dasharray:900;stroke-dashoffset:900;animation:draw 2.4s ease-out forwards}
.hero-svg .keys circle{fill:var(--surface);stroke:var(--ink);stroke-width:2.5}
.hero-svg .keys circle.on{fill:var(--ink)}
@keyframes draw{to{stroke-dashoffset:0}}
@media(max-width:860px){.hero-grid{grid-template-columns:1fr}.hero-art{display:none}}
@media (prefers-reduced-motion:reduce){.hero-svg .wave{animation:none;stroke-dashoffset:0}}
.stats{display:grid;grid-template-columns:repeat(6,1fr);gap:12px;margin-top:26px}
.stats div{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:14px 16px}
.stats b{display:block;font:650 1.6rem/1.1 var(--f-display)}
.stats span{font-size:.82rem;color:var(--muted)}
@media(max-width:860px){.stats{grid-template-columns:repeat(3,1fr)}}
@media(max-width:480px){.stats{grid-template-columns:repeat(2,1fr)}}

/* ---------- buttons & chips */
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:600 .93rem var(--f-body);text-decoration:none;cursor:pointer;transition:transform .12s,background .15s,border-color .15s}
.btn:hover{border-color:var(--accent);color:var(--ink);transform:translateY(-1px)}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn.primary:hover{background:var(--accent);border-color:var(--accent);color:#1b1206}
.btn.ghost{background:transparent}
.btn svg{width:16px;height:16px;fill:currentColor}
.btn.mini{padding:5px 9px;font-size:.78rem}
.btn.playing{background:var(--accent);border-color:var(--accent);color:#1b1206}
.btn-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:14px 0 6px}
.linkish{background:none;border:0;padding:0;color:var(--accent-2);font:inherit;cursor:pointer;text-decoration:underline;text-underline-offset:3px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chip{display:inline-flex;gap:6px;align-items:center;padding:6px 12px;border-radius:999px;background:var(--surface);border:1px solid var(--line);color:var(--ink-2);font:500 .86rem var(--f-body);text-decoration:none;cursor:pointer}
.chip span{color:var(--muted);font-size:.78rem}
.chip:hover,.chip.on{border-color:var(--accent);color:var(--ink);background:var(--accent-soft)}
.badge{display:inline-block;padding:2px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent-ink);font:700 .68rem var(--f-body);text-transform:uppercase;letter-spacing:.06em;vertical-align:middle}

/* ---------- layout blocks */
.block{margin-top:34px;margin-bottom:34px}
.band{background:var(--bg-2);border-block:1px solid var(--line);padding:4px 0}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px}
.sec-head h2{margin-top:0}
.more{font-weight:600;font-size:.92rem;text-decoration:none}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)} .g3{grid-template-columns:repeat(3,1fr)} .g4{grid-template-columns:repeat(4,1fr)} .g5{grid-template-columns:repeat(5,1fr)}
@media(max-width:980px){.g4,.g5{grid-template-columns:repeat(3,1fr)}}
@media(max-width:760px){.g3,.g4,.g5{grid-template-columns:repeat(2,1fr)}.g2{grid-template-columns:1fr}}
@media(max-width:460px){.g3,.g4{grid-template-columns:1fr}.g5{grid-template-columns:repeat(2,1fr)}}
.split{display:grid;grid-template-columns:1fr 1fr;gap:36px}
@media(max-width:760px){.split{grid-template-columns:1fr}}
.two-col{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:36px;margin-top:10px}
@media(max-width:940px){.two-col{grid-template-columns:1fr}}
.side-col .panel{margin-bottom:16px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.panel h2:first-child,.panel .h4:first-child{margin-top:0}
.big-link{text-decoration:none;color:var(--ink);transition:transform .15s,border-color .15s,box-shadow .15s}
.big-link:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:var(--shadow);color:var(--ink)}
.big-link.accent{background:var(--accent-soft)}
.callout{background:var(--accent-soft);border:1px solid color-mix(in srgb,var(--accent) 35%,transparent);border-radius:var(--radius-s);padding:14px 16px;margin:14px 0}
.callout.tip{background:color-mix(in srgb,var(--accent-2) 10%,var(--surface));border-color:color-mix(in srgb,var(--accent-2) 30%,transparent)}
.callout h2{margin-top:0}

/* ---------- cards */
.card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;text-decoration:none;color:var(--ink);transition:transform .15s,box-shadow .15s,border-color .15s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:var(--line-2);color:var(--ink)}
.card-img{aspect-ratio:4/3;background:var(--surface-2);display:grid;place-items:center;overflow:hidden}
.card-img img{width:100%;height:100%;object-fit:contain;padding:10px;mix-blend-mode:multiply}
:root[data-theme="dark"] .card-img img{mix-blend-mode:normal}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .card-img img{mix-blend-mode:normal}}
.card-img .ph{font:650 3rem var(--f-display);color:var(--line-2)}
.card-b{padding:14px 16px 16px}
.card-b h3{margin:0 0 .3em}
.card-b p{margin:0;color:var(--muted);font-size:.9rem}
.card-meta{font:700 .7rem var(--f-body)!important;text-transform:uppercase;letter-spacing:.08em;color:var(--accent-ink)!important;margin-bottom:6px!important}
.feature{display:flex;gap:16px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;text-decoration:none;color:var(--ink);transition:.15s}
.feature:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.feature img{width:64px;height:auto;max-height:150px;flex:none}
.feature h3{margin:0 0 4px}
.feature p{margin:0;color:var(--muted);font-size:.88rem}
.tool{display:flex;flex-direction:column;gap:4px;padding:18px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:.15s}
.tool:hover{border-color:var(--accent);transform:translateY(-2px);color:var(--ink)}
.tool .ti{font:650 1.6rem var(--f-display);color:var(--accent-ink)}
.tool span:last-child{font-size:.82rem;color:var(--muted)}
.link-list{list-style:none;margin:0;padding:0}
.link-list li{padding:6px 0;border-bottom:1px dashed var(--line)}
.link-list li:last-child{border-bottom:0}
.link-list.scroll{max-height:520px;overflow:auto}
.cols3{columns:3 240px;column-gap:28px;padding-left:18px}
.cols3 li{break-inside:avoid;margin-bottom:4px}

/* ---------- tables */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-s);background:var(--surface);margin:10px 0}
.table-wrap.sticky{max-height:75vh}
table{border-collapse:collapse;width:100%;font-size:.93rem}
th,td{padding:9px 12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
thead th{position:sticky;top:0;background:var(--surface-2);font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);z-index:1;white-space:nowrap}
tbody tr:hover{background:var(--surface-2)}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
table.compact th,table.compact td{padding:6px 10px}
table.num td{font-variant-numeric:tabular-nums}
table.facts th{width:36%;color:var(--muted);font-weight:600;font-size:.88rem}
tr.hl,td.hl{background:var(--accent-soft)!important}
td.neg{color:var(--accent-2)} td.pos{color:var(--bad)}
td.links a,td.links button{margin-right:10px;white-space:nowrap}
.fretboard td{text-align:center;font-weight:600;font-size:.86rem;border-left:1px solid var(--line)}
.fretboard td.acc{color:var(--muted);font-weight:500}
.fretboard td.dot{background:color-mix(in srgb,var(--accent) 8%,transparent)}
.sortable th{cursor:pointer}
.filter-bar{margin:6px 0 4px}
.filter-in{width:100%;max-width:520px;padding:11px 14px;border-radius:12px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);font:inherit}

/* ---------- prose */
.prose{max-width:760px}
.prose p,.prose li{color:var(--ink-2)}
.prose h2{margin-top:1.6em}
.prose h3{margin-top:1.4em}
.prose ul,.prose ol{padding-left:1.3em}
.prose li{margin:.3em 0}
.prose blockquote{margin:1.2em 0;padding:4px 18px;border-left:3px solid var(--accent);color:var(--ink-2);background:var(--surface-2);border-radius:0 10px 10px 0}
.prose code{background:var(--surface-2);padding:1px 6px;border-radius:6px}
.prose .anchor{opacity:0;margin-left:6px;text-decoration:none;color:var(--muted)}
.prose h2:hover .anchor,.prose h3:hover .anchor{opacity:1}
.ticks{list-style:none;padding:0}
.ticks li{position:relative;padding-left:28px;margin:.55em 0;color:var(--ink-2)}
.ticks li::before{content:"";position:absolute;left:4px;top:.62em;width:10px;height:10px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.attr{font-size:.8rem;color:var(--muted)}
.credit{font-size:.76rem;color:var(--muted);margin-top:6px}
.credit a{color:var(--muted)}

/* ---------- FAQ */
.faq{margin:30px 0}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:0 16px;margin:8px 0}
.faq summary{cursor:pointer;padding:14px 0;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";color:var(--accent-ink);font-weight:700}
.faq details[open] summary::after{content:"–"}
.faq summary::-webkit-details-marker{display:none}
.faq details p{color:var(--ink-2);margin-bottom:14px}

/* ---------- instrument page */
.inst-head{display:grid;grid-template-columns:1fr 380px;gap:32px;align-items:center;padding:22px 0 6px}
.inst-fig{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:14px;text-align:center}
.inst-fig img{max-height:360px;width:auto;object-fit:contain}
.inst-fig.portrait img{max-height:320px;border-radius:10px}
@media(max-width:860px){.inst-head{grid-template-columns:1fr}}
.range-svg{width:100%;height:auto;color:var(--ink)}
.range-svg .sl,.notation .sl{stroke:var(--ink-2);stroke-width:1}
.range-svg .ll,.notation .ll{stroke:var(--ink);stroke-width:1.3}
.range-svg .bl,.notation .bl{stroke:var(--ink);stroke-width:1.3}
.range-svg .rc{font:600 13px var(--f-body);fill:var(--ink)}
.range-svg .ott{font:italic 600 12px var(--f-display);fill:var(--accent-ink)}
.range-svg .rangearc{stroke:var(--accent);stroke-width:2;stroke-dasharray:4 4}
.clips{display:grid;gap:10px}
.clip{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px}
.clip figcaption{display:flex;flex-direction:column;margin-bottom:8px}
.clip audio{width:100%}
.works{padding-left:1.2em}
.works li{margin:.35em 0}
.mus{display:block;background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;text-decoration:none;color:var(--ink);transition:.15s}
.mus:hover{transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.mus img{display:block;width:100%;aspect-ratio:1;object-fit:contain;background:var(--surface-2);padding:8px}
.mus span{display:block;padding:10px 12px;font-size:.8rem;color:var(--muted)}
.mus b{display:block;color:var(--ink);font-size:.9rem;margin-bottom:2px}

/* ---------- notation */
.notation{width:100%;height:auto;color:var(--ink);display:block}
.notation .nn{font:600 11px var(--f-body);fill:var(--muted)}
.notation .stem{stroke:var(--ink);stroke-width:1.3}
.notation .blf{fill:var(--ink)}
.hide-names .notation .nn{display:none}
.sheet{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;margin:16px 0}
.sheet .h4{margin:4px 0 6px;color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.08em}
.sheet .notation{margin-bottom:14px}
.dl{margin:4px 0 0}
.tempo{display:inline-flex;align-items:center;gap:8px;font-size:.88rem;color:var(--muted)}
.tempo output{min-width:2.4em;font-weight:700;color:var(--ink)}
.tempo input{accent-color:var(--accent)}

/* ---------- fingerings */
img[class^="fi-"]{display:block;margin:0 auto}
:root[data-theme="dark"] img[class^="fi-"]{filter:invert(.9) hue-rotate(180deg) saturate(.6) brightness(1.05)}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) img[class^="fi-"]{filter:invert(.9) hue-rotate(180deg) saturate(.6) brightness(1.05)}}
.reg-nav{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}
.reg-nav a{padding:8px 14px;border-radius:12px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:600}
.reg-nav a span{display:block;font-weight:400;font-size:.78rem;color:var(--muted)}
.fgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:10px}
.fgrid-flute{grid-template-columns:repeat(auto-fill,minmax(230px,1fr))}
.fcell{position:relative;display:flex;flex-direction:column;align-items:center;gap:6px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:10px 6px 8px;text-decoration:none;color:var(--ink);transition:.15s}
.fcell:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow);color:var(--ink)}
.fcell img{width:88px}
.fgrid-flute .fcell img{width:210px}
.fnote{font:650 1.05rem var(--f-display)}
.fnote small{display:block;font:500 .72rem var(--f-body);color:var(--muted);text-align:center}
.falt{position:absolute;top:8px;right:8px;font-size:.66rem;font-weight:700;color:var(--accent-ink);background:var(--accent-soft);border-radius:999px;padding:1px 6px}
.note-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;padding:22px 0 8px;flex-wrap:wrap}
.note-head h1{margin-bottom:.25em}
.prevnext{display:flex;gap:8px}
.prevnext a{padding:8px 14px;border-radius:999px;border:1px solid var(--line-2);text-decoration:none;color:var(--ink);font-weight:600;background:var(--surface)}
.prevnext a:hover{border-color:var(--accent)}
.fing-main{display:flex;flex-wrap:wrap;gap:16px;margin:14px 0 6px}
.fing{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;display:flex;flex-direction:column;align-items:center;gap:10px;width:220px}
.fing.primary{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft);width:250px}
.fing img{width:140px}
.fing.primary img{width:170px}
.fing-main .fi-flute{width:100%!important}
.fing figcaption{text-align:center;font-size:.86rem;display:flex;flex-direction:column;gap:4px}
.fing figcaption span{color:var(--ink-2)}
.fing figcaption em{color:var(--muted);font-style:normal;font-size:.8rem}
.staff-fig{justify-content:center}
.staff-fig .notation{width:170px}
.mini-notes{display:flex;flex-wrap:wrap;gap:4px}
.mini-notes a{padding:3px 7px;border-radius:7px;font-size:.78rem;text-decoration:none;background:var(--surface-2);color:var(--ink-2)}
.mini-notes a[aria-current]{background:var(--accent);color:#1b1206;font-weight:700}
.fstrip{display:flex;gap:8px;overflow-x:auto;padding:4px 2px 12px;scroll-snap-type:x proximity}
.fs-cell{flex:none;scroll-snap-align:start;display:flex;flex-direction:column;align-items:center;gap:4px;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:8px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.85rem}
.fs-cell img{width:64px}
.fs-cell img.fi-flute{width:180px}
.fs-cell:hover{border-color:var(--accent)}
.hub-card{display:flex;gap:18px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-decoration:none;color:var(--ink);transition:.15s}
.hub-card:hover{border-color:var(--accent);box-shadow:var(--shadow);color:var(--ink)}
.hub-imgs{display:flex;gap:4px;flex:none}
.hub-imgs img{width:44px}
.hub-imgs img.fi-flute{width:120px}
.hub-card h2{margin:0 0 6px;font-size:1.3rem}
.hub-card p{margin:0;font-size:.88rem;color:var(--muted)}
@media(max-width:560px){.hub-card{flex-direction:column;align-items:flex-start}}

/* ---------- scales */
.key-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:10px}
.key-cell{position:relative;display:flex;flex-direction:column;padding:14px;border-radius:14px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);transition:.15s}
.key-cell:hover{border-color:var(--accent);transform:translateY(-2px);color:var(--ink)}
.key-cell b{font:650 1.5rem var(--f-display)}
.key-cell span{font-size:.8rem;color:var(--muted)}
.key-cell em{font-style:normal;font-size:.78rem;color:var(--accent-ink);margin-top:4px}
.key-cell i{position:absolute;top:10px;right:12px;font-style:normal;font-size:.78rem;color:var(--muted)}
.mini-keys{display:flex;flex-wrap:wrap;gap:4px;margin:8px 0}
.mini-keys a{min-width:38px;text-align:center;padding:4px 6px;border-radius:8px;background:var(--surface-2);text-decoration:none;color:var(--ink);font-weight:600;font-size:.85rem}
.mini-keys a:hover{background:var(--accent-soft)}

/* ---------- tunings */
.string-pills{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-top:14px}
.spill{display:flex;align-items:baseline;gap:1px;padding:10px 16px;border-radius:14px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink);cursor:pointer;font:650 1.3rem var(--f-display)}
.spill span{font:600 .75rem var(--f-body);color:var(--muted)}
.spill:hover,.spill.playing{border-color:var(--accent);background:var(--accent-soft)}
.tuning-card .big{margin:.2em 0}

/* ---------- composers/players */
.comp,.pl{display:flex;gap:12px;align-items:center;text-decoration:none;color:var(--ink);padding:12px}
.comp img,.pl img,.avatar{width:56px;height:56px;border-radius:50%;object-fit:cover;flex:none;background:var(--surface-2)}
.avatar{display:grid;place-items:center;font:650 1.3rem var(--f-display);color:var(--muted)}
.comp span,.pl span{display:flex;flex-direction:column;min-width:0}
.comp em,.pl em{font-style:normal;font-size:.8rem;color:var(--accent-ink)}
.comp small,.pl small{font-size:.78rem;color:var(--muted)}
.comp:hover,.pl:hover{border-color:var(--accent);color:var(--ink)}
.alpha{display:flex;flex-wrap:wrap;gap:4px}
.alpha a{width:34px;height:34px;display:grid;place-items:center;border-radius:9px;background:var(--surface);border:1px solid var(--line);text-decoration:none;color:var(--ink);font-weight:700}
.work{display:flex;flex-direction:column;text-decoration:none;color:var(--ink)}
.work span{font-size:.82rem;color:var(--muted)}
.book{display:flex;flex-direction:column;gap:6px;text-decoration:none;color:var(--ink)}
.book img{width:100%;aspect-ratio:3/4;object-fit:cover;border-radius:8px;background:var(--surface-2)}
.papers li{margin:.7em 0}
.papers span{display:block}
.gloss .term{display:grid;grid-template-columns:220px 1fr;gap:16px;padding:12px 0;border-bottom:1px solid var(--line)}
.gloss dt{font-weight:700}
.gloss dd{margin:0;color:var(--ink-2)}
@media(max-width:640px){.gloss .term{grid-template-columns:1fr;gap:4px}}

/* ---------- museum object */
.obj-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;padding-top:22px;align-items:start}
.obj-img{margin:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px;position:sticky;top:84px}
.obj-img img{width:100%;max-height:70vh;object-fit:contain}
@media(max-width:820px){.obj-grid{grid-template-columns:1fr}.obj-img{position:static}}

/* ---------- guide */
.guide-head{padding:22px 0 6px;max-width:820px}
.guide-grid{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start}
.toc{position:sticky;top:84px;font-size:.88rem;max-height:calc(100vh - 100px);overflow:auto}
.toc ol{list-style:none;padding:0;margin:0}
.toc ol ol{padding-left:12px}
.toc a{display:block;padding:4px 0;color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--accent-ink)}
@media(max-width:900px){.guide-grid{grid-template-columns:1fr}.toc{position:static;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px}}
.guide-body table{font-size:.9rem}

/* ---------- tools */
.tool-head{padding:22px 0 8px}
.tool-ui{margin:8px 0 20px;padding:24px}
.tool-ctl{display:flex;flex-wrap:wrap;gap:14px;align-items:center;margin:14px 0}
.tool-ctl label,.block-label{display:inline-flex;align-items:center;gap:8px;font-size:.9rem;color:var(--ink-2)}
.block-label{display:flex;flex-direction:column;align-items:stretch;gap:6px}
.tool-ui input[type=number],.tool-ui select,.tool-ui textarea,.tool-ui input:not([type]),.tune-ctl select{padding:9px 10px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface-2);color:var(--ink);font:inherit}
.tool-ui input[type=number]{width:96px}
.tool-ui textarea{width:100%;font-family:var(--f-mono)}
.tool-ui input[type=range]{accent-color:var(--accent)}
.tuner{display:flex;flex-direction:column;align-items:center;text-align:center}
.tuner-dial{width:min(420px,100%)}
.dial .arc{fill:none;stroke:var(--line-2);stroke-width:10;stroke-linecap:round}
.dial .tick{stroke:var(--muted);stroke-width:1.5}
.dial .tick.zero{stroke:var(--good);stroke-width:3}
.dial .needle{stroke:var(--ink);stroke-width:3.5;stroke-linecap:round;transform-origin:150px 150px;transition:transform .12s linear}
.dial .hub{fill:var(--ink)}
.dial .dl{font:600 11px var(--f-body);fill:var(--muted)}
.tuner-read{font:650 4.5rem/1 var(--f-display);margin-top:-6px}
.tuner-read sub{font-size:1.6rem;color:var(--muted)}
.tuner-sub{color:var(--muted);font-variant-numeric:tabular-nums}
.tuner.ok .tuner-read{color:var(--good)} .tuner.ok .needle{stroke:var(--good)}
.metro{text-align:center}
.metro-bpm{display:flex;justify-content:center;align-items:center;gap:22px}
.metro-bpm output{font:650 5rem/1 var(--f-display);min-width:3ch;font-variant-numeric:tabular-nums}
.metro-term{color:var(--accent-ink);font-weight:600}
.metro input[type=range]{width:min(560px,100%)}
.metro .tool-ctl{justify-content:center}
.metro-beats{display:flex;justify-content:center;gap:10px;margin:18px 0}
.metro-beats i{width:22px;height:22px;border-radius:50%;background:var(--line);transition:background .05s}
.metro-beats i.on{background:var(--accent)}
.metro-beats i.acc.on{background:var(--bad)}
.trainer{margin-top:10px;text-align:left}
.tg-keys{display:grid;grid-template-columns:repeat(12,1fr);gap:6px}
.tg-keys button{padding:16px 0;border-radius:12px;border:1px solid var(--line-2);background:var(--surface-2);color:var(--ink);font:650 1rem var(--f-body);cursor:pointer}
.tg-keys button.blk{background:var(--ink);color:var(--bg)}
.tg-keys button.on{background:var(--accent);color:#1b1206;border-color:var(--accent)}
@media(max-width:620px){.tg-keys{grid-template-columns:repeat(6,1fr)}}
.tg-read{font:650 2rem var(--f-display);text-align:center;margin:10px 0}
.x-out{display:flex;flex-direction:column;gap:4px;background:var(--surface-2);border-radius:12px;padding:14px;margin:12px 0}
.x-out output{font:650 1.5rem var(--f-display);word-break:break-word}
.swap{font-size:1.4rem;color:var(--muted)}

/* ---------- tunes / abc */
.abc-paper{overflow-x:auto;color:var(--ink)}
.abc-paper svg{max-width:100%}
.abc-paper svg path,.abc-paper svg text{fill:currentColor}
.abc-paper .abcjs-note_selected{fill:var(--accent)!important}
.abc-src{white-space:pre-wrap;background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:14px;font-size:.82rem;max-height:340px;overflow:auto}
.abc-audio{margin-top:10px}

/* ---------- reference */
.chart-scroll{overflow-x:auto;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:12px}
.rangechart{min-width:820px;width:100%}
.rangechart .rl{font:500 12px var(--f-body);fill:var(--ink)}
.rangechart .gl{font:600 10px var(--f-body);fill:var(--muted)}
.rangechart .grid{stroke:var(--line);stroke-width:1}
.rangechart .rb{opacity:.85} .rangechart a:hover .rb{opacity:1}
.rangechart .kw{fill:#fff;stroke:#9aa3ad;stroke-width:.6} .rangechart .kb{fill:#1d232b}
.rangechart .kmid{fill:var(--accent)}
.legend{display:flex;flex-wrap:wrap;gap:12px;margin:8px 0 12px;font-size:.85rem}
.lg::before{content:"";display:inline-block;width:12px;height:12px;border-radius:3px;margin-right:6px;vertical-align:-1px}
.lg-woodwind::before{background:var(--c-wood)} .lg-brass::before{background:var(--c-brass)} .lg-strings::before{background:var(--c-strings)}
.lg-plucked::before{background:var(--c-plucked)} .lg-keyboard::before{background:var(--c-keys)} .lg-percussion::before{background:var(--c-perc)}
.circle-wrap{max-width:520px;margin:0 auto}
.circle5 .cf-maj{fill:var(--surface);stroke:var(--line-2)} .circle5 .cf-min{fill:var(--surface-2);stroke:var(--line-2)}
.circle5 .cf-maj:hover,.circle5 .cf-min:hover{fill:var(--accent-soft)}
.circle5 .cf-t1{font:650 20px var(--f-display);fill:var(--ink)} .circle5 .cf-t2{font:600 13px var(--f-body);fill:var(--ink-2)}
.circle5 .cf-t3{font:600 11px var(--f-body);fill:var(--muted)} .circle5 .cf-c{fill:var(--accent-soft);stroke:var(--accent)}
.hs-tree .panel{margin-bottom:12px}

/* ---------- footer */
.ftr{margin-top:70px;background:var(--bg-2);border-top:1px solid var(--line);padding:44px 0 24px}
.ftr-grid{display:grid;grid-template-columns:1.6fr repeat(7,1fr);gap:22px}
.ftr-brand p{color:var(--muted);font-size:.88rem;margin-top:12px}
.ftr-col h2{font:700 .78rem var(--f-body);text-transform:uppercase;letter-spacing:.08em;margin:0 0 10px}
.ftr-col h2 a{color:var(--ink);text-decoration:none}
.ftr-col ul{list-style:none;padding:0;margin:0}
.ftr-col li{margin:6px 0}
.ftr-col a,.ftr-brand a{color:var(--muted);text-decoration:none;font-size:.86rem}
.ftr-col a:hover{color:var(--accent-ink)}
.ftr-base{margin-top:30px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted)}
@media(max-width:1060px){.ftr-grid{grid-template-columns:repeat(4,1fr)}.ftr-brand{grid-column:1/-1}}
@media(max-width:560px){.ftr-grid{grid-template-columns:repeat(2,1fr)}}

/* ---------- print */
@media print{
  .hdr,.ftr,.crumbs,.btn-row,.btn,.side-col,.faq,.filter-bar,.search-ov,.prevnext,.reg-nav,.tool-ctl{display:none!important}
  body{background:#fff;color:#000;font-size:11pt}
  .two-col{display:block}
  .fcell,.panel,.sheet,.card{break-inside:avoid;box-shadow:none}
  a{color:#000;text-decoration:none}
  img[class^="fi-"]{filter:none!important}
}