@font-face { font-family: "Barlow"; src: url("fonts/Barlow-Regular.ttf") format("truetype"); font-weight: 400; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("fonts/Barlow-Medium.ttf") format("truetype"); font-weight: 500; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("fonts/Barlow-SemiBold.ttf") format("truetype"); font-weight: 600; font-display: swap; }
@font-face { font-family: "Barlow"; src: url("fonts/Barlow-Bold.ttf") format("truetype"); font-weight: 700; font-display: swap; }

:root {
  color-scheme: dark;
  --bg: #0b0b0e;
  --bg-raised: #111115;
  --panel: #141418;
  --panel-2: #1b1b20;
  --field: #0e0e11;
  --line: rgba(255, 255, 255, 0.08);
  --line-2: rgba(255, 255, 255, 0.14);
  --text: #f2eee6;
  --text-2: #b6b2aa;
  --text-3: #8f8c85;
  --amber: #ffa234;
  --amber-hover: #ffb65e;
  --amber-pressed: #e88e22;
  --on-amber: #1a1206;
  --purple: #8a12ff;
  --good: #6fd08c;
  --bad: #ff7b6e;
  --song-1: #c9b38a;
  --song-2: #cf8fff;
  --radius: 12px;
  --radius-sm: 8px;
  --gutter: clamp(16px, 4vw, 40px);
  --max: 1200px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --fast: 180ms;
  --font: "Barlow", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 72px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; }
button { font: inherit; color: inherit; }
::selection { background: rgba(255, 162, 52, 0.35); }
:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; border-radius: 4px; }

.wrap { width: 100%; max-width: calc(var(--max) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.num { font-variant-numeric: tabular-nums; }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 100; background: var(--amber); color: var(--on-amber); padding: 8px 12px; border-radius: var(--radius-sm); font-weight: 600; text-decoration: none; }
.skip:focus { left: 8px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  min-height: 44px; padding: 0 1.15rem;
  border: 1px solid var(--line-2); border-radius: var(--radius-sm);
  background: var(--panel-2); color: var(--text);
  font-size: 1rem; font-weight: 600; letter-spacing: 0.005em; text-decoration: none; cursor: pointer;
  transition: background-color var(--fast) var(--ease), border-color var(--fast) var(--ease), color var(--fast) var(--ease);
}
.btn:hover { background: #26262d; border-color: rgba(255, 255, 255, 0.22); }
.btn:active { background: #2e2e36; }
.btn[disabled] { opacity: 0.45; cursor: default; }
.btn-primary { background: var(--amber); border-color: var(--amber); color: var(--on-amber); }
.btn-primary:hover { background: var(--amber-hover); border-color: var(--amber-hover); }
.btn-primary:active { background: var(--amber-pressed); border-color: var(--amber-pressed); }
.btn-quiet { background: transparent; border-color: transparent; color: var(--text-2); padding: 0 0.75rem; }
.btn-quiet:hover { background: rgba(255, 255, 255, 0.06); border-color: transparent; color: var(--text); }
.btn svg { width: 16px; height: 16px; flex: none; }

/* Brand mark: a record split into two songs and stitched back together. Pure CSS;
   1cqw is 1% of the mark's width, so every size draws the same geometry. */
.mark {
  --tilt: 21deg;                       /* the seam, clockwise from vertical */
  --half-gap: max(0.5px, 1.5cqw);
  --hole: 27%;                         /* hole radius as a share of the record's radius */
  --reach: 31.75%;                     /* stitch centers, measured from the middle */
  position: relative; display: block; flex: none;
  width: var(--mark-size, 40px); aspect-ratio: 1;
  container-type: inline-size;
}
.mark-half { position: absolute; inset: 0; border-radius: 50%; }
.mark-half, .mark-half::before, .mark-half::after {
  --ring: radial-gradient(circle closest-side, transparent calc(var(--hole) - 0.6px), #000 calc(var(--hole) + 0.6px));
}
.mark-purple {
  --side: linear-gradient(calc(90deg + var(--tilt)), #000 calc(50% - var(--half-gap) - 0.5px), transparent calc(50% - var(--half-gap) + 0.5px));
  --groove: rgba(30, 4, 78, 0.62);
  --lip: rgba(232, 214, 255, 0.34);
  background:
    radial-gradient(circle closest-side, rgba(24, 4, 60, 0.5) var(--hole), transparent calc(var(--hole) + 10%)),
    radial-gradient(circle closest-side, transparent 84%, rgba(36, 6, 84, 0.42) 100%),
    radial-gradient(46% 34% at 30% 15%, rgba(255, 255, 255, 0.42), transparent 100%),
    linear-gradient(160deg, #bb8cff 0%, #9650ff 30%, #7526f0 60%, #5712cf 85%, #460cae 100%);
}
.mark-amber {
  --side: linear-gradient(calc(90deg + var(--tilt)), transparent calc(50% + var(--half-gap) - 0.5px), #000 calc(50% + var(--half-gap) + 0.5px));
  --groove: rgba(118, 44, 0, 0.5);
  --lip: rgba(255, 246, 222, 0.4);
  background:
    radial-gradient(circle closest-side, rgba(110, 40, 0, 0.42) var(--hole), transparent calc(var(--hole) + 10%)),
    radial-gradient(circle closest-side, transparent 84%, rgba(140, 50, 0, 0.36) 100%),
    radial-gradient(40% 30% at 68% 20%, rgba(255, 250, 230, 0.4), transparent 100%),
    linear-gradient(160deg, #ffcb5a 0%, #ffb23c 30%, #ffa234 48%, #f98514 72%, #e3660a 100%);
}
.mark-half {
  -webkit-mask: var(--ring), var(--side);
  -webkit-mask-composite: source-in;
  mask: var(--ring), var(--side);
  mask-composite: intersect;
}
/* Grooves, fading out before they reach the seam */
.mark-half::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: radial-gradient(circle closest-side,
    transparent 40.2%, var(--groove) 41%, var(--groove) 42.4%, var(--lip) 43.2%, transparent 44.2%,
    transparent 53.7%, var(--groove) 54.5%, var(--groove) 55.9%, var(--lip) 56.7%, transparent 57.7%,
    transparent 67.2%, var(--groove) 68%, var(--groove) 69.4%, var(--lip) 70.2%, transparent 71.2%,
    transparent 80.7%, var(--groove) 81.5%, var(--groove) 82.9%, var(--lip) 83.7%, transparent 84.7%);
  -webkit-mask: conic-gradient(from var(--tilt), transparent 20deg, #000 62deg, #000 118deg, transparent 160deg, transparent 200deg, #000 242deg, #000 298deg, transparent 340deg);
  mask: conic-gradient(from var(--tilt), transparent 20deg, #000 62deg, #000 118deg, transparent 160deg, transparent 200deg, #000 242deg, #000 298deg, transparent 340deg);
}
/* Vinyl sheen, plus a fine bevel on the outer edge and around the hole */
.mark-half::after {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background:
    radial-gradient(circle closest-side, transparent 96.4%, rgba(255, 255, 255, 0.26) 98.6%, transparent 100%),
    radial-gradient(circle closest-side, rgba(255, 255, 255, 0.3) var(--hole), transparent calc(var(--hole) + 2.4%)),
    conic-gradient(from -24deg, transparent 0deg, rgba(255, 255, 255, 0.16) 26deg, transparent 62deg,
      transparent 180deg, rgba(255, 255, 255, 0.1) 206deg, transparent 242deg);
}
/* Small marks keep the shapes and colors; the grooves only add noise there. */
@container (max-width: 96px) {
  .mark-half::before { display: none; }
}
.mark-stitch {
  position: absolute; width: 17%; height: 6.6%; border-radius: 999px;
  left: calc(50% + sin(var(--tilt)) * var(--reach)); top: calc(50% - cos(var(--tilt)) * var(--reach));
  transform: translate(-50%, -50%) rotate(var(--tilt));
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.75), rgba(255, 255, 255, 0) 60%),
    linear-gradient(90deg, #dbc3ff, #fff3e8 50%, #ffd394);
  box-shadow: 0 0 0 max(0.5px, 1.1cqw) rgba(18, 8, 32, 0.55), 0 0.8cqw 1.8cqw rgba(0, 0, 0, 0.45);
}
.mark-stitch + .mark-stitch { left: calc(50% - sin(var(--tilt)) * var(--reach)); top: calc(50% + cos(var(--tilt)) * var(--reach)); }

.lockup { display: flex; align-items: center; gap: 0.625rem; color: var(--text); text-decoration: none; }
.wordmark { font-weight: 700; font-size: 1.1875rem; line-height: 1; letter-spacing: 0.07em; text-transform: uppercase; }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 20; background: rgba(11, 11, 14, 0.94); border-bottom: 1px solid transparent; transition: border-color var(--fast) var(--ease); }
.nav.scrolled { border-bottom-color: var(--line); }
.nav-inner { display: flex; align-items: center; gap: 2rem; height: 64px; }
.nav-logo { flex: none; --mark-size: 34px; }
.nav-links { display: flex; gap: 0.25rem; margin: 0 0 0 auto; padding: 0; list-style: none; }
.nav-links a { display: block; padding: 0.5rem 0.75rem; border-radius: var(--radius-sm); color: var(--text-2); font-weight: 500; text-decoration: none; transition: color var(--fast) var(--ease), background-color var(--fast) var(--ease); }
.nav-links a:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.nav .btn { min-height: 38px; padding: 0 0.9rem; font-size: 0.9375rem; }
@media (max-width: 760px) { .nav-links { display: none; } .nav-inner { justify-content: space-between; } }

/* Hero */
.hero { position: relative; padding: clamp(28px, 4.5vw, 56px) 0 clamp(40px, 6vw, 80px); isolation: isolate; }
.hero::before {
  content: ""; position: absolute; z-index: -1; inset: -64px 0 auto; height: 900px; pointer-events: none;
  background: radial-gradient(ellipse 46% 52% at 72% 36%, rgba(124, 30, 255, 0.16), transparent 70%),
              radial-gradient(ellipse 36% 40% at 80% 52%, rgba(255, 140, 20, 0.09), transparent 70%);
}
h1, h2, h3 { text-wrap: balance; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr); align-items: center; gap: clamp(24px, 5vw, 72px); }
.hero h1 { margin: 0; font-size: clamp(2.6rem, 5.6vw, 4.75rem); line-height: 1.02; font-weight: 600; letter-spacing: -0.022em; max-width: 11.5em; }
.lede { margin: 1.5rem 0 0; max-width: 34rem; color: var(--text-2); font-size: clamp(1.0625rem, 1.5vw, 1.25rem); line-height: 1.55; }
.cta { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.fine { margin: 1rem 0 0; color: var(--text-3); font-size: 0.875rem; }
@media (max-width: 900px) {
  .hero-grid { grid-template-columns: 1fr; }
  .deck { order: -1; width: min(72vw, 320px); }
}

/* The record deck */
.deck { position: relative; width: min(100%, 440px); aspect-ratio: 1; margin: 0 auto 2.5rem; --level: 0; }
.deck-glow {
  position: absolute; inset: 6%; border-radius: 50%;
  background: radial-gradient(closest-side at 36% 40%, rgba(150, 40, 255, 0.85), transparent 75%),
              radial-gradient(closest-side at 66% 64%, rgba(255, 150, 20, 0.75), transparent 75%);
  filter: blur(44px);
  opacity: calc(0.5 + var(--level) * 0.5);
  transform: scale(calc(1 + var(--level) * 0.12));
  will-change: opacity, transform;
  pointer-events: none;
}
/* The brand mark, turning around its hole. Without BeatStitch the stitches let go
   and the halves drift apart along the seam's normal. */
.deck-disc { position: absolute; inset: 0; width: auto; transform-origin: 50% 50%; will-change: transform; }
/* A static shadow under the record, so turning it never redraws a blur */
.deck::before { content: ""; position: absolute; inset: 1%; border-radius: 50%; box-shadow: 0 18px 36px rgba(0, 0, 0, 0.5); pointer-events: none; }
.deck-disc .mark-half, .deck-disc .mark-stitch { transition: transform 260ms var(--ease), opacity 200ms var(--ease); }
.deck.apart .mark-purple { transform: translate(calc(cos(var(--tilt)) * -3.6%), calc(sin(var(--tilt)) * -3.6%)); }
.deck.apart .mark-amber { transform: translate(calc(cos(var(--tilt)) * 3.6%), calc(sin(var(--tilt)) * 3.6%)); }
.deck.apart .mark-stitch { opacity: 0; transform: translate(-50%, -50%) rotate(var(--tilt)) scale(0.5, 0.8); }
.deck-play {
  position: absolute; left: 50%; top: 50%; width: 21%; aspect-ratio: 1; transform: translate(-50%, -50%);
  display: grid; place-items: center; padding: 0;
  border: 1px solid rgba(255, 255, 255, 0.16); border-radius: 50%;
  background: #121216; color: var(--text); cursor: pointer;
  box-shadow: 0 0 0 6px rgba(11, 11, 14, 0.6);
  transition: background-color var(--fast) var(--ease), border-color var(--fast) var(--ease), transform var(--fast) var(--ease);
}
.deck-play:hover { background: #1d1d23; border-color: rgba(255, 255, 255, 0.3); }
.deck-play:active { transform: translate(-50%, -50%) scale(0.96); }
.deck-play svg.icon { width: 34%; height: 34%; }
.deck-play .ring { position: absolute; inset: -1px; width: calc(100% + 2px); height: calc(100% + 2px); transform: rotate(-90deg); opacity: 0; transition: opacity var(--fast) var(--ease); }
.deck-play .ring circle { fill: none; stroke: var(--amber); stroke-width: 3; stroke-linecap: round; }
.loading .deck-play .ring { opacity: 1; }
.deck-hint { position: absolute; left: 0; right: 0; bottom: -2.25rem; margin: 0; text-align: center; color: var(--text-3); font-size: 0.875rem; }

/* Icons swap with state */
[data-playing="true"] .icon-play, [data-playing="false"] .icon-pause { display: none; }

/* Arrangement player */
.player { margin-top: clamp(32px, 5vw, 56px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.player-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1rem; padding: 0.75rem 0.875rem; border-bottom: 1px solid var(--line); }
.player-title { display: flex; align-items: baseline; gap: 0.75rem; min-width: 0; margin-right: auto; }
.player-title strong { font-weight: 600; white-space: nowrap; }
.player-title span { color: var(--text-3); font-size: 0.875rem; white-space: nowrap; }
.transport { display: flex; align-items: center; gap: 0.5rem; }
.icon-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; padding: 0; border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--panel-2); cursor: pointer; transition: background-color var(--fast) var(--ease), border-color var(--fast) var(--ease); }
.icon-btn:hover { background: #26262d; border-color: rgba(255, 255, 255, 0.22); }
.icon-btn svg { width: 16px; height: 16px; }
.icon-btn.is-primary { background: var(--amber); border-color: var(--amber); color: var(--on-amber); }
.icon-btn.is-primary:hover { background: var(--amber-hover); border-color: var(--amber-hover); }
.readout { min-width: 6.5rem; padding: 0.4rem 0.7rem; border-radius: 6px; background: var(--field); border: 1px solid var(--line); font-size: 1.125rem; font-weight: 500; text-align: center; line-height: 1.3; }
.readout small { color: var(--text-3); font-size: 0.8125rem; font-weight: 400; }
.meta { color: var(--text-3); font-size: 0.875rem; white-space: nowrap; }
.meta b { color: var(--text-2); font-weight: 500; }

.segmented { display: inline-flex; padding: 3px; gap: 3px; border-radius: 10px; background: var(--field); border: 1px solid var(--line); }
.segmented button { display: inline-flex; align-items: center; gap: 0.5rem; min-height: 36px; padding: 0 0.85rem; border: 0; border-radius: 7px; background: transparent; color: var(--text-2); font-weight: 600; cursor: pointer; transition: background-color var(--fast) var(--ease), color var(--fast) var(--ease); }
.segmented button:hover { color: var(--text); background: rgba(255, 255, 255, 0.05); }
.segmented button[aria-pressed="true"] { background: var(--amber); color: var(--on-amber); }
.seg-label { display: inline-flex; align-items: center; gap: 0.75rem; color: var(--text-2); font-weight: 500; }
.segmented kbd { font: inherit; font-size: 0.75rem; font-weight: 600; min-width: 1.25rem; padding: 0 0.3rem; border-radius: 4px; background: rgba(255, 255, 255, 0.08); text-align: center; }
.segmented button[aria-pressed="true"] kbd { background: rgba(26, 18, 6, 0.16); }

.scope { position: relative; height: clamp(96px, 10vw, 128px); border-bottom: 1px solid var(--line); background: #0d0d10; }
.scope canvas { width: 100%; height: 100%; }
.timeline { position: relative; height: clamp(210px, 26vw, 268px); cursor: pointer; touch-action: none; }
.timeline canvas { width: 100%; height: 100%; }
.timeline:focus-visible { outline-offset: -2px; border-radius: 0; }

.blend-bar { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 0.75rem 1.5rem; padding: 0.875rem 1rem; border-top: 1px solid var(--line); min-height: 76px; }
.blend-now { min-width: 0; }
.blend-now strong { display: block; font-weight: 600; }
.blend-now span { display: block; color: var(--text-2); font-size: 0.9375rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.phase { display: grid; grid-template-columns: auto 180px auto; align-items: center; gap: 0.875rem; }
.phase-label { color: var(--text-3); font-size: 0.875rem; }
.phase-track { position: relative; height: 28px; border-radius: 6px; background: var(--field); border: 1px solid var(--line); }
.phase-track::before { content: ""; position: absolute; left: 50%; top: 5px; bottom: 5px; width: 1px; background: rgba(255, 255, 255, 0.18); }
.phase-dot { position: absolute; top: 50%; width: 12px; height: 12px; margin: -6px 0 0 -6px; border-radius: 50%; left: 50%; }
.phase-out { background: var(--out, var(--song-1)); box-shadow: 0 0 0 2px var(--field); }
.phase-in { background: var(--in, var(--song-2)); box-shadow: 0 0 0 2px var(--field); mix-blend-mode: screen; }
.phase-value { min-width: 4.75rem; text-align: right; font-size: 1.125rem; font-weight: 600; }
.phase-value.good { color: var(--good); }
.phase-value.bad { color: var(--bad); }
.phase.idle .phase-dot { opacity: 0.25; }
.phase.idle .phase-value { color: var(--text-3); font-weight: 500; font-size: 0.9375rem; }
.player-note { margin: 1rem 0 0; max-width: 60rem; color: var(--text-3); font-size: 0.875rem; }
.player-error { margin: 0; padding: 0.75rem 1rem; border-top: 1px solid var(--line); color: var(--bad); font-size: 0.9375rem; }
@media (max-width: 720px) {
  .player-title span { display: none; }
  .blend-bar { grid-template-columns: 1fr; }
  .phase { grid-template-columns: auto minmax(0, 1fr) auto; }
  .hide-sm { display: none; }
}

/* Sections */
.section { padding: clamp(72px, 10vw, 136px) 0; border-top: 1px solid var(--line); }
.section-head { max-width: 46rem; margin-bottom: clamp(40px, 6vw, 72px); }
.section h2 { margin: 0; font-size: clamp(2rem, 3.8vw, 3rem); line-height: 1.08; font-weight: 600; letter-spacing: -0.018em; }
.section h3 { margin: 0; font-size: clamp(1.375rem, 2vw, 1.625rem); line-height: 1.2; font-weight: 600; letter-spacing: -0.01em; }
.section p { color: var(--text-2); }
.section-head p { margin: 1.25rem 0 0; font-size: clamp(1.0625rem, 1.4vw, 1.1875rem); }

.feature { display: grid; grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr); gap: clamp(28px, 6vw, 88px); align-items: center; }
.feature + .feature { margin-top: clamp(72px, 10vw, 128px); }
.feature-text p { margin: 1rem 0 0; }
.feature-text p:first-of-type { margin-top: 1.125rem; }
@media (max-width: 900px) { .feature { grid-template-columns: 1fr; } }

.figure { margin: 0; padding: clamp(16px, 2.4vw, 28px); border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); }
.figure-controls { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 0.75rem; margin-bottom: 1.25rem; }
.figure-caption { margin: 1rem 0 0; color: var(--text-3); font-size: 0.875rem; }
.figure svg { width: 100%; height: auto; overflow: visible; }

/* Tempo table */
.tempo-table { width: 100%; margin-top: 1.5rem; border-collapse: collapse; font-size: 0.9375rem; }
.tempo-table th { padding: 0 0 0.5rem; color: var(--text-3); font-weight: 500; text-align: left; }
.tempo-table td { padding: 0.6rem 0; border-top: 1px solid var(--line); color: var(--text); }
.tempo-table th:not(:first-child), .tempo-table td:not(:first-child) { text-align: right; }
.swatch { display: inline-block; width: 10px; height: 10px; margin-right: 0.6rem; border-radius: 2px; vertical-align: 0; }

/* Beat grid figure */
.beat-row-label { fill: var(--text-2); font-size: 13px; font-family: var(--font); }
.beat-row-label tspan { fill: var(--text-3); }
.beat-tick { transition: transform 260ms var(--ease); }
.beat-link { transition: d 260ms var(--ease); }
.axis-label { fill: var(--text-3); font-size: 12px; font-family: var(--font); }

/* Camelot wheel */
.camelot-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 15rem); gap: clamp(20px, 3vw, 36px); align-items: center; }
@media (max-width: 640px) { .camelot-layout { grid-template-columns: 1fr; } }
.wheel-seg path { stroke: var(--panel); stroke-width: 2; cursor: pointer; transition: fill var(--fast) var(--ease); }
.wheel-seg text { pointer-events: none; font-family: var(--font); text-anchor: middle; dominant-baseline: central; transition: fill var(--fast) var(--ease); }
.wheel-seg .code { font-size: 15px; font-weight: 600; }
.wheel-seg .name { font-size: 11px; }
.wheel-seg:focus { outline: none; }
.wheel-seg:focus-visible path { stroke: var(--amber); stroke-width: 2.5; }
.wheel-info h4 { margin: 0; font-size: 1.75rem; font-weight: 600; line-height: 1.1; }
.wheel-info p { margin: 0.5rem 0 0; font-size: 0.9375rem; }
.wheel-info ul { margin: 1rem 0 0; padding: 0; list-style: none; font-size: 0.9375rem; }
.wheel-info li { padding: 0.45rem 0; border-top: 1px solid var(--line); color: var(--text-2); display: flex; justify-content: space-between; gap: 1rem; }
.wheel-info li b { color: var(--text); font-weight: 600; }
.wheel-songs { margin-top: 1rem; color: var(--text-3); font-size: 0.875rem; }

/* Handoff chart */
.chart-legend { display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem; margin: 1rem 0 0; padding: 0; list-style: none; color: var(--text-2); font-size: 0.875rem; }
.chart-legend li { display: inline-flex; align-items: center; gap: 0.5rem; }
.chart-legend i { display: inline-block; width: 22px; height: 0; border-top: 2px solid currentColor; }
.chart-legend i.dashed { border-top-style: dashed; }
.chart-stat { display: flex; align-items: baseline; gap: 0.6rem; }
.chart-stat b { font-size: 1.375rem; font-weight: 600; }
.chart-stat span { color: var(--text-3); font-size: 0.875rem; }
.toggle { display: inline-flex; align-items: center; gap: 0.6rem; min-height: 36px; padding: 0 0.25rem; cursor: pointer; color: var(--text); font-weight: 500; user-select: none; }
.toggle input { appearance: none; -webkit-appearance: none; margin: 0; width: 38px; height: 22px; border-radius: 11px; background: #2d2d34; border: 1px solid var(--line-2); position: relative; cursor: pointer; transition: background-color var(--fast) var(--ease), border-color var(--fast) var(--ease); }
.toggle input::after { content: ""; position: absolute; top: 2px; left: 2px; width: 16px; height: 16px; border-radius: 50%; background: var(--text); transition: transform var(--fast) var(--ease); }
.toggle input:checked { background: var(--amber); border-color: var(--amber); }
.toggle input:checked::after { transform: translateX(16px); background: var(--on-amber); }
.toggle input:focus-visible { outline: 2px solid var(--amber); outline-offset: 3px; }

/* Ear training */
.lesson { border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel); overflow: hidden; }
.tabs { display: flex; border-bottom: 1px solid var(--line); overflow-x: auto; scrollbar-width: none; }
.tabs button { flex: 1 0 auto; min-height: 52px; padding: 0 1.25rem; border: 0; border-bottom: 2px solid transparent; background: transparent; color: var(--text-2); font-weight: 600; cursor: pointer; white-space: nowrap; transition: color var(--fast) var(--ease), border-color var(--fast) var(--ease), background-color var(--fast) var(--ease); }
.tabs button:hover { color: var(--text); background: rgba(255, 255, 255, 0.03); }
.tabs button[aria-selected="true"] { color: var(--text); border-bottom-color: var(--amber); }
.lesson-body { padding: clamp(16px, 2.6vw, 28px); }
.lesson-listen { margin: 0 0 1.25rem; max-width: 52rem; color: var(--text); font-size: 1.0625rem; }
.ab { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5rem; }
.ab button { min-height: 44px; border: 1px solid var(--line-2); border-radius: var(--radius-sm); background: var(--panel-2); color: var(--text-2); font-weight: 600; cursor: pointer; transition: background-color var(--fast) var(--ease), color var(--fast) var(--ease), border-color var(--fast) var(--ease); }
.ab button:hover { color: var(--text); border-color: rgba(255, 255, 255, 0.22); }
.ab button[aria-pressed="true"] { background: var(--amber); border-color: var(--amber); color: var(--on-amber); }
.ab kbd { font: inherit; font-size: 0.75rem; opacity: 0.7; margin-left: 0.4rem; }
.lesson-wave { position: relative; height: clamp(180px, 24vw, 260px); margin-top: 0.75rem; border-radius: var(--radius-sm); background: var(--field); cursor: pointer; touch-action: none; }
.lesson-wave canvas { width: 100%; height: 100%; }
.lesson-transport { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem; margin-top: 0.875rem; }
.lesson-transport .time { margin-left: auto; color: var(--text-2); }
.lesson-change { margin: 1.25rem 0 0; max-width: 52rem; color: var(--text-3); font-size: 0.9375rem; }

/* Screens */
.screen { margin: 0; }
.screen img { width: 100%; height: auto; border-radius: 10px; border: 1px solid var(--line-2); background: #212121; box-shadow: 0 40px 80px -40px rgba(0, 0, 0, 0.9), 0 0 0 1px rgba(0, 0, 0, 0.6); }
.screen-notes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); margin-top: clamp(28px, 4vw, 48px); }
.screen-notes h3 { font-size: 1.125rem; }
.screen-notes p { margin: 0.5rem 0 0; font-size: 0.9375rem; }
.screen-notes.four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 960px) { .screen-notes.four { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 760px) { .screen-notes, .screen-notes.four { grid-template-columns: 1fr; } }

.split { display: grid; grid-template-columns: minmax(0, 0.75fr) minmax(0, 1.25fr); gap: clamp(28px, 5vw, 72px); align-items: start; }
.split.reverse { grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr); }
.split.reverse > :first-child { order: 2; }
@media (max-width: 900px) { .split, .split.reverse { grid-template-columns: 1fr; } .split.reverse > :first-child { order: 0; } }
/* Analysis list */
.specs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 clamp(28px, 5vw, 72px); margin: 0; }
.specs div { padding: 1.25rem 0; border-top: 1px solid var(--line); }
.specs dt { font-weight: 600; font-size: 1.0625rem; }
.specs dd { margin: 0.35rem 0 0; color: var(--text-2); font-size: 0.9375rem; }
.specs dd span { color: var(--text-3); }
@media (max-width: 760px) { .specs { grid-template-columns: 1fr; } }

.course { margin: 1.5rem 0 0; padding: 0; list-style: none; counter-reset: lesson; columns: 2; column-gap: 2rem; }
.course li { break-inside: avoid; padding: 0.45rem 0; color: var(--text-2); font-size: 0.9375rem; counter-increment: lesson; display: flex; gap: 0.75rem; }
.course li::before { content: counter(lesson); min-width: 1.4rem; color: var(--text-3); font-variant-numeric: tabular-nums; }
@media (max-width: 520px) { .course { columns: 1; } }

.safe { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); }
.safe p { margin: 0.5rem 0 0; font-size: 0.9375rem; }
.safe h3 { font-size: 1.125rem; }
@media (max-width: 900px) { .safe { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .safe { grid-template-columns: 1fr; } }

/* Download */
.download { text-align: center; }
.download-mark { --mark-size: 140px; margin: 0 auto 2rem; }
.download h2 { font-size: clamp(2.4rem, 5vw, 3.75rem); }
.download .lede { margin-left: auto; margin-right: auto; }
.download .cta { justify-content: center; }
.platforms { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0.75rem; max-width: 52rem; margin: 2.25rem auto 0; }
.platform { display: flex; flex-direction: column; align-items: center; gap: 0.25rem; padding: 1.1rem 1.25rem; border: 1px solid var(--line-2); border-radius: var(--radius); background: var(--panel-2); text-decoration: none; transition: background-color var(--fast) var(--ease), border-color var(--fast) var(--ease); }
.platform strong { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--text); font-size: 1.125rem; font-weight: 600; }
.platform strong svg { width: 16px; height: 16px; }
.platform span { color: var(--text-3); font-size: 0.875rem; }
.platform:hover { background: #24242b; border-color: rgba(255, 255, 255, 0.24); }
.platform.is-recommended { background: var(--amber); border-color: var(--amber); }
.platform.is-recommended strong { color: var(--on-amber); }
.platform.is-recommended span { color: rgba(26, 18, 6, 0.75); }
.platform.is-recommended:hover { background: var(--amber-hover); border-color: var(--amber-hover); }
.download .fine a { color: var(--text-2); }
@media (max-width: 640px) { .platforms { grid-template-columns: 1fr; } }
.download-details { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: clamp(20px, 3vw, 40px); max-width: 60rem; margin: clamp(48px, 6vw, 72px) auto 0; text-align: left; }
.download-details h3 { font-size: 1.0625rem; }
.download-details p { margin: 0.5rem 0 0; font-size: 0.9375rem; }
@media (max-width: 760px) { .download-details { grid-template-columns: 1fr; } }

.footer { padding: 48px 0 64px; border-top: 1px solid var(--line); color: var(--text-3); font-size: 0.875rem; }
.footer-inner { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem 3rem; align-items: start; }
.footer .lockup { --mark-size: 28px; gap: 0.5rem; }
.footer .wordmark { font-size: 1rem; color: var(--text); }
.footer p { margin: 0 0 0.75rem; max-width: 52rem; }
.footer a { color: var(--text-2); }
.footer a:hover { color: var(--text); }
@media (max-width: 640px) { .footer-inner { grid-template-columns: 1fr; } }

@media (max-width: 560px) {
  .tabs button { flex: 1 1 0; min-width: 0; padding: 0.5rem 0.4rem; white-space: normal; line-height: 1.2; font-size: 0.9375rem; }
  .beat-row-label { font-size: 22px; }
  .axis-label { font-size: 19px; }
}