:root{
  color-scheme:dark;
  --bg:#09090b;
  --surface:#141417;
  --surface-hover:#1a1a1e;
  --text:#dbd9dc;
  --text-soft:#aaa6ac;
  --muted:#8c888e;
  --line:#2a272c;
  --string:#4a464c;
  --accent:#eb3b4d;
  --accent-hover:#ff4a5c;
  --accent-soft:rgba(235,59,77,.12);
  --ink:#09090b;
  --display:"Oswald","Arial Narrow",sans-serif;
  --mono:"DM Mono",ui-monospace,monospace;
  --font-xs:12px;
  --font-sm:14px;
  --font-base:16px;
  --font-lg:18px;
}

*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  background:
    radial-gradient(circle at 92% 4%,var(--accent-soft),transparent 28rem),
    var(--bg);
  color:var(--text);
  font-family:var(--mono);
  font-size:var(--font-base);
  line-height:1.6;
  overflow-wrap:break-word;
  display:flex;
  justify-content:center;
  padding:0 16px 40px;
}
.shell{width:100%;max-width:980px}
.page-test .shell{display:flex;flex-direction:column}

/* Shared header */
.masthead{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:16px;
  padding:24px 0 16px;
  border-bottom:1px solid var(--line);
}
.wordmark{
  color:var(--text);
  font-family:var(--display);
  font-weight:700;
  font-size:24px;
  letter-spacing:.01em;
  text-decoration:none;
  text-transform:uppercase;
}
.wordmark::after{content:".";color:var(--accent)}
.wordmark:hover{color:var(--accent)}
.nav{display:flex;gap:20px;font-size:var(--font-xs);letter-spacing:.06em;text-transform:uppercase;white-space:nowrap}
.nav a{color:var(--muted);text-decoration:none;padding-bottom:3px;border-bottom:1px solid transparent}
.nav a:hover{color:var(--text)}
.nav a[aria-current="page"]{color:var(--accent);border-bottom-color:transparent}
.subbar{display:flex;justify-content:flex-end;padding:8px 0 0}
.roundcount{font-size:var(--font-xs);color:var(--muted);letter-spacing:.06em;white-space:nowrap}

/* Shared controls */
.controls{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:10px 14px;
  padding:14px 0;
  border-bottom:1px solid var(--line);
}
.field{display:flex;flex-direction:column;gap:5px;min-width:0}
.field-wide{grid-column:1/-1}
.field-label{font-size:var(--font-xs);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.field select{
  width:100%;
  appearance:none;
  background:var(--surface);
  color:var(--text);
  border:1px solid var(--line);
  border-radius:0;
  font-family:var(--mono);
  font-size:var(--font-base);
  padding:10px 30px 8px 10px;
  cursor:pointer;
  background-image:linear-gradient(45deg,transparent 50%,var(--text-soft) 50%),linear-gradient(135deg,var(--text-soft) 50%,transparent 50%);
  background-position:calc(100% - 14px) 55%,calc(100% - 9px) 55%;
  background-size:5px 5px,5px 5px;
  background-repeat:no-repeat;
}
.field select:hover{border-color:var(--accent)}
.segmented{display:flex;border:1px solid var(--line);border-radius:0;overflow:hidden}
.segmented button{
  flex:1;
  background:var(--surface);
  color:var(--muted);
  border:0;
  font-family:var(--mono);
  font-size:var(--font-sm);
  padding:11px 8px;
  cursor:pointer;
  transition:color .15s,background .15s;
  white-space:nowrap;
}
.segmented button + button{border-left:1px solid var(--line)}
.segmented button[aria-pressed="true"],
.segmented button[aria-selected="true"]{background:var(--accent);color:var(--ink)}
.segmented button:hover:not([aria-pressed="true"]):not([aria-selected="true"]){color:var(--text)}

/* Shared fretboard */
.str{stroke:var(--string)}
.fretwire{stroke:var(--text-soft);stroke-opacity:.42;stroke-width:1.4}
.nut{stroke:var(--text);stroke-opacity:.8;stroke-width:5;stroke-linecap:round}
.inlay{fill:var(--text);opacity:.11}
.axis{fill:var(--muted);font-family:var(--mono);font-size:var(--font-xs)}
.strlabel{fill:var(--muted);font-family:var(--mono);font-size:var(--font-xs)}

/* Shared readout */
.readout{border-top:1px solid var(--line);margin-top:14px;padding-top:16px;display:grid;gap:14px}
.rowitem{display:flex;gap:14px;align-items:baseline;flex-wrap:wrap}
.rowlabel{font-size:var(--font-xs);letter-spacing:.08em;text-transform:uppercase;color:var(--muted);width:104px;flex:none}
.tones{font-family:var(--display);font-weight:600;font-size:26px;letter-spacing:.015em}
.tones .root{color:var(--accent)}
.tones .sep{color:var(--line);font-weight:400;padding:0 2px}
.footnote{border-top:1px solid var(--line);margin-top:22px;padding-top:14px;font-size:var(--font-sm);color:var(--muted);line-height:1.7}
.footnote strong{color:var(--text-soft);font-weight:500}

/* No-JavaScript state */
.noscript{
  border:1px solid var(--accent);
  color:var(--text);
  background:var(--accent-soft);
  padding:12px 14px;
  margin:16px 0;
  font-size:var(--font-sm);
  line-height:1.65;
}

/* Test */
.page-test .prompt{padding:40px 0 30px;text-align:center}
.page-test .task{font-size:var(--font-xs);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.page-test .glyph{
  font-family:var(--display);
  font-weight:700;
  font-size:clamp(4.6rem,21vw,8.5rem);
  line-height:.86;
  letter-spacing:-.03em;
  color:var(--accent);
}
.page-test .glyph-key{font-size:clamp(2.5rem,11vw,4.6rem);letter-spacing:-.02em;text-transform:uppercase}
.page-test .glyph .accidental{font-size:.44em;color:var(--text-soft);letter-spacing:-.02em}
.page-test .glyph.masked{color:var(--line)}
.page-test .board{padding:6px 0 20px}
.page-test .reveal-scale{min-height:96px;padding:10px 0 18px;text-align:center}
.page-test .scaletones{display:flex;flex-wrap:wrap;justify-content:center;gap:6px 16px;font-family:var(--display);font-weight:700;font-size:clamp(1.5rem,6vw,2.1rem);line-height:1.1}
.page-test .scaletone-root{color:var(--accent)}
.page-test .scalesteps{margin-top:12px;font-size:var(--font-sm);color:var(--muted);letter-spacing:.12em}
.page-test .board svg{width:100%;height:auto;display:block;overflow:visible}
.page-test .hit{opacity:0;animation:strum .34s cubic-bezier(.2,.9,.3,1) forwards}
.page-test .hit circle{fill:var(--accent)}
.page-test .hit text{fill:var(--ink);font-family:var(--display);font-weight:700;font-size:14px}
.page-test .ask circle{fill:none;stroke:var(--text);stroke-width:2}
.page-test .ask text{fill:var(--text);font-family:var(--display);font-weight:700;font-size:15px}
@keyframes strum{from{opacity:0;transform:translateX(-7px)}to{opacity:1;transform:translateX(0)}}
.page-test .actions{display:flex;flex-direction:column;gap:10px;padding-top:4px}
.page-test .actions-spaced{margin-top:26px}
.page-test .row{display:flex;gap:10px}
.btn{
  flex:1;
  font-family:var(--mono);
  font-size:14px;
  padding:13px 10px;
  cursor:pointer;
  border-radius:0;
  border:1px solid var(--text-soft);
  background:transparent;
  color:var(--text);
  transition:background .15s,color .15s;
  letter-spacing:.02em;
}
.btn:hover{background:var(--surface-hover)}
.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--ink);font-weight:500}
.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}
.btn-yes{border-color:var(--accent);color:var(--accent)}
.btn-yes:hover{background:var(--accent-soft)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.hidden{display:none !important}
.page-test .summary{text-align:center;padding:52px 0 34px}
.page-test .score{font-family:var(--display);font-weight:700;font-size:clamp(3.4rem,15vw,5.5rem);line-height:1;letter-spacing:-.035em}
.page-test .score .of{color:var(--muted);font-size:.38em;letter-spacing:0}
.page-test .verdict{color:var(--text-soft);font-size:var(--font-sm);margin-top:12px;max-width:36ch;margin-inline:auto;line-height:1.65}

/* Scales */
.page-stupnice .boardwrap{
  margin:22px 0 4px;
  overflow-x:auto;
  overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
  scrollbar-color:var(--line) transparent;
}
.page-stupnice .boardwrap::-webkit-scrollbar{height:6px}
.page-stupnice .boardwrap::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}
.page-stupnice .boardwrap svg{display:block;height:auto}
.page-stupnice .scrollhint{font-size:var(--font-xs);color:var(--text-soft);letter-spacing:.04em;padding-bottom:8px}
.page-stupnice .n-out circle{fill:none;stroke:var(--string);stroke-width:1}
.page-stupnice .n-out text{fill:var(--string);font-family:var(--mono)}
.page-stupnice .n-in circle{fill:var(--surface);stroke:var(--text-soft);stroke-width:1.3}
.page-stupnice .n-in text{fill:var(--text);font-family:var(--mono)}
.page-stupnice .n-root circle{fill:var(--accent);stroke:var(--accent);stroke-width:1.3}
.page-stupnice .n-root text{fill:var(--ink);font-family:var(--display);font-weight:700}
.page-stupnice .narrow{font-size:var(--font-sm);color:var(--text-soft)}
.page-stupnice .note-copy{font-size:var(--font-sm);color:var(--text-soft);line-height:1.7}

/* Triads */
.page-triady .intro{padding:22px 0 15px}
.page-triady .chord-name{font-family:var(--display);font-weight:700;font-size:clamp(2.3rem,7vw,4rem);line-height:1;letter-spacing:-.025em;text-transform:uppercase}
.page-triady .chord-name .quality{color:var(--accent)}
.page-triady .intro-note{font-size:var(--font-sm);color:var(--text-soft);margin-top:10px;line-height:1.6}
.page-triady .shapes{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.page-triady .shape{background:var(--surface);border:0;border-top:2px solid var(--accent);padding:14px 12px 10px;min-width:0}
.page-triady .shape-head{display:flex;justify-content:space-between;gap:10px;align-items:baseline;margin-bottom:7px}
.page-triady .shape-title{font-family:var(--display);font-weight:700;font-size:var(--font-lg)}
.page-triady .shape-root{font-size:var(--font-xs);color:var(--accent);letter-spacing:.06em;text-transform:uppercase;text-align:right}
.page-triady .shape-order{font-size:var(--font-xs);color:var(--text-soft);margin-bottom:9px}
.page-triady .shape svg{width:100%;height:auto;display:block;overflow:visible}
.page-triady .str.selected{stroke:var(--text-soft);stroke-opacity:.82}
.page-triady .strlabel.selected{fill:var(--text)}
.page-triady .note circle{fill:var(--bg);stroke:var(--text-soft);stroke-width:1.5}
.page-triady .note text{fill:var(--text);font-family:var(--display);font-size:13px;font-weight:700}
.page-triady .note.root circle{fill:var(--accent);stroke:var(--accent)}
.page-triady .note.root text{fill:var(--ink)}
.page-triady .readout{margin-top:18px;gap:13px}
.page-triady .tones{font-size:24px}
.page-triady .formula{font-size:var(--font-sm);color:var(--text-soft)}
.page-triady .roots{font-size:var(--font-sm);color:var(--text-soft)}
.page-triady .roots strong{color:var(--accent);font-weight:500}

/* Chords */
.page-akordy .intro{padding:22px 0 12px}
.page-akordy .chord-name{font-family:var(--display);font-weight:700;font-size:clamp(2.3rem,7vw,4rem);line-height:1;letter-spacing:-.025em}
.page-akordy .chord-name .quality{color:var(--accent)}
.page-akordy .intro-note{font-size:var(--font-sm);color:var(--text-soft);margin-top:10px;line-height:1.7;max-width:64ch}
.page-akordy .chordtones{display:flex;flex-wrap:wrap;gap:8px;padding:2px 0 4px}
.page-akordy .tone{background:var(--surface);border-top:2px solid var(--line);padding:12px 15px 11px;min-width:80px;display:grid;gap:5px}
.page-akordy .tone-root{border-top-color:var(--accent)}
.page-akordy .tone-name{font-family:var(--display);font-weight:700;font-size:29px;line-height:1}
.page-akordy .tone-root .tone-name{color:var(--accent)}
.page-akordy .tone-degree{font-size:var(--font-xs);color:var(--muted);letter-spacing:.06em}
.page-akordy .tone-omitted{background:transparent;border-top-style:dashed}
.page-akordy .tone-omitted .tone-name{color:var(--string)}
.page-akordy .source{display:flex;flex-wrap:wrap;gap:6px 14px}
.page-akordy .sourcename{color:var(--string)}
.page-akordy .used .sourcename{color:var(--text)}
.page-akordy .lowered .sourcename{color:var(--accent)}
.page-akordy .sourcenote small{color:var(--muted);font-size:var(--font-xs);margin-left:3px}
.page-akordy .topic:first-of-type{border-top:1px solid var(--line);margin-top:4px}

/* Key */
.page-tonina .intro{padding:22px 0 4px}
.page-tonina .key-name{font-family:var(--display);font-weight:700;font-size:clamp(2.3rem,7vw,4rem);line-height:1;letter-spacing:-.025em;text-transform:uppercase}
.page-tonina .keyblock{padding:20px 0;border-bottom:1px solid var(--line)}
.page-tonina .keyblock h2{font-family:var(--display);font-size:22px;letter-spacing:-.01em;margin-bottom:13px}
.page-tonina .scalerow{display:flex;flex-wrap:wrap;align-items:center;gap:7px}
.page-tonina .scalerow .tone{font-family:var(--display);font-weight:700;font-size:27px;line-height:1}
.page-tonina .tone-root{color:var(--accent)}
.page-tonina .tone-octave{color:var(--muted)}
.page-tonina .gap{font-size:var(--font-xs);color:var(--muted);border:1px solid var(--line);padding:3px 7px;line-height:1.2}
.page-tonina .gap-half{color:var(--accent);border-color:var(--accent)}
.page-tonina .readout{margin-top:16px;padding-top:14px;gap:10px}
.page-tonina .stepwords{font-size:var(--font-sm);color:var(--text-soft)}
.page-tonina .relative,.page-tonina .blocknote{font-size:var(--font-sm);color:var(--text-soft);line-height:1.75;max-width:70ch}
.page-tonina .relative strong{color:var(--text);font-weight:500}
.page-tonina .blocknote{margin-bottom:14px}
.page-tonina .degrees{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px}
.page-tonina .degree{background:var(--surface);border-top:2px solid var(--accent);padding:12px 11px;min-width:0}
.page-tonina .degree-dim{border-top-color:var(--line)}
.page-tonina .numeral{font-size:var(--font-xs);color:var(--accent);letter-spacing:.06em}
.page-tonina .degree-dim .numeral{color:var(--muted)}
.page-tonina .degree h3{font-family:var(--display);font-weight:700;font-size:21px;line-height:1.1;margin-top:5px}
.page-tonina .degree .suffix{color:var(--text-soft)}
.page-tonina .degree-quality{font-size:var(--font-xs);color:var(--muted);margin-top:3px}
.page-tonina .degree-tones{font-size:var(--font-xs);color:var(--text-soft);margin-top:9px;line-height:1.5}
.page-tonina .degree-hint{font-size:var(--font-xs);color:var(--accent);margin-top:7px;line-height:1.4}

/* Tips */
.page-tipy .intro{padding:38px 0 28px;border-bottom:1px solid var(--line)}
.page-tipy .eyebrow,.page-home .eyebrow{font-size:var(--font-xs);letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.page-tipy h1{font-family:var(--display);font-weight:700;font-size:clamp(2.7rem,9vw,5rem);line-height:.92;letter-spacing:-.025em;max-width:none;text-transform:uppercase}
.page-tipy h1 span{color:var(--accent)}
.page-tipy .lede{color:var(--text-soft);font-size:var(--font-base);line-height:1.7;max-width:62ch;margin-top:19px}
.topic{padding:28px 0;border-bottom:1px solid var(--line)}
.topic-head{display:grid;grid-template-columns:46px 1fr;gap:10px;align-items:baseline;margin-bottom:15px}
.topic-number{font-family:var(--display);font-size:var(--font-sm);font-weight:700;color:var(--accent)}
.topic h2,.page-tipy .routine h2{font-family:var(--display);font-size:28px;line-height:1.15;letter-spacing:-.015em}
.tips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.tip{background:var(--surface);border:0;border-top:2px solid var(--accent);padding:15px 16px;min-width:0}
.tip{transition:background .15s}
.tip:hover{background:var(--surface-hover)}
.tip h3{font-family:var(--display);font-size:20px;line-height:1.25;margin-bottom:8px}
.tip p{font-size:var(--font-sm);color:var(--text-soft);line-height:1.75}
.tip strong{color:var(--text);font-weight:500}
.tip .example{display:block;color:var(--accent);font-size:13px;margin-top:10px;line-height:1.65}
.page-tipy .routine{padding:28px 0 4px}
.page-tipy .routine h2{margin-bottom:15px}
.page-tipy .steps{counter-reset:step;display:grid;border-top:1px solid var(--line)}
.page-tipy .step{counter-increment:step;display:grid;grid-template-columns:48px 1fr;gap:10px;padding:14px 0;border-bottom:1px solid var(--line)}
.page-tipy .step::before{content:counter(step,decimal-leading-zero);color:var(--accent);font-family:var(--display);font-weight:700;font-size:var(--font-sm);padding-top:2px}
.page-tipy .step h3{font-family:var(--display);font-size:var(--font-lg);margin-bottom:4px}
.page-tipy .step p{font-size:var(--font-sm);color:var(--text-soft);line-height:1.7}

/* Home */
.page-home{width:100vw;min-height:100vh;min-height:100svh;padding:0 20px;overflow-x:hidden}
.page-home .home-shell{width:100%;max-width:1180px;min-height:100vh;min-height:100svh;display:grid;grid-template-rows:auto 1fr}
.page-home .masthead{width:100%}
.page-home .hero{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,.65fr);gap:clamp(32px,7vw,96px);align-items:center;padding:clamp(40px,8vh,88px) 0}
.page-home h1{font-family:var(--display);font-weight:700;font-size:clamp(4.2rem,11vw,9.5rem);line-height:.96;letter-spacing:-.025em;max-width:7ch;text-transform:uppercase}
.page-home .hero-line{display:block}
.page-home .hero-line-emphasis{color:#fff}
.page-home .hero-line-accent{color:var(--accent)}
.page-home .hero-copy{align-self:end;padding-bottom:clamp(4px,4vh,42px)}
.page-home .hero-copy > p{color:var(--text-soft);font-size:15px;line-height:1.75;max-width:46ch;margin-bottom:24px}
.page-home .hero-links{display:grid;border-top:1px solid var(--line)}
.page-home .hero-link{display:grid;grid-template-columns:34px 1fr auto;gap:12px;align-items:center;color:var(--text);text-decoration:none;padding:13px 0;border-bottom:1px solid var(--line);transition:color .15s,padding .15s}
.page-home .hero-link:hover{color:var(--accent);padding-left:6px}
.page-home .hero-link small{color:var(--text-soft);font-size:var(--font-xs)}
.page-home .hero-link strong{font-family:var(--display);font-size:var(--font-lg)}
.page-home .hero-link span{color:var(--muted)}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

@media (max-width:760px){
  .page-tonina .degrees{grid-template-columns:repeat(4,minmax(0,1fr))}
  .page-triady .shapes{grid-template-columns:1fr}
  .page-triady .shape{padding-inline:16px}
  .page-triady .shape svg{max-width:560px;margin-inline:auto}
  .page-home .hero{grid-template-columns:1fr;align-content:center}
  .page-home .hero-copy{align-self:auto;padding-bottom:0}
}
@media (max-width:600px){
  .field select,.segmented button{min-height:44px}
  .tips{grid-template-columns:1fr}
}
@media (max-width:520px){
  .masthead{align-items:flex-start;flex-direction:column;gap:8px}
  .nav{flex-wrap:wrap;gap:10px 18px;white-space:normal}
  .nav a{padding-block:6px}
  .controls{grid-template-columns:1fr}
  .field-wide{grid-column:auto}
  .rowlabel{width:100%}
  .page-test .prompt{padding:28px 0 20px}
  .page-tonina .degrees{grid-template-columns:repeat(2,minmax(0,1fr))}
  .page-triady .string-groups{overflow-x:auto;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
  .page-triady .string-groups .segmented{min-width:490px}
  .page-tipy .intro{padding-top:28px}
  .page-home{padding-inline:16px}
  .page-home .hero{padding:28px 0 34px;gap:32px}
  .page-home h1{font-size:clamp(4rem,23vw,6.2rem)}
}
@media (prefers-reduced-motion:reduce){
  .page-test .hit{animation:none;opacity:1}
  *{transition:none !important}
}