/* ============================================================
   Sleep Chamber - page styles. v2.52.0 (SC1)
   Natively dark (like heart.html): the night palette does not depend on
   body.dark, so the site theme toggle cannot break it. Visual direction =
   research/sleep-chamber/mockup.html (approved with the proposal).
   Motion: nothing faster than one cycle per 4 s, no flashing; reduced motion
   freezes every animated visual.
   ============================================================ */
.sc {
  --night-0: #04070F; --night-1: #070C1A; --night-2: #0C1326; --night-3: #121B33;
  --line: rgba(160,180,255,.12); --line-2: rgba(160,180,255,.22);
  --ink: #E9EEF8; --ink-2: #B9C3D8; --ink-3: #9AA6BE;
  --indigo: #8C8CF5; --blue: #6EA8FF; --teal: #5FE0CF; --teal-d: #2BB3A3;
  --L: #8DBAFF; --R: #C2AEFF;
  --mono: 'Space Grotesk', Inter, system-ui, sans-serif;
  --ease: cubic-bezier(.25,1,.5,1);
  /* evidence tiers on night surfaces (the light-mode token values fail here) */
  --hc-ev-strong: #52D6A0; --hc-ev-moderate: #82BCF2; --hc-ev-preliminary: #EBB352; --hc-ev-debated: #FF9494;
  position: relative;
  min-height: 100vh;
  color: var(--ink);
  background: var(--night-0);
  font-family: Inter, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  isolation: isolate;
}
.sc *, .sc *::before, .sc *::after { box-sizing: border-box; }
.sc-sky { position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 40% at 78% 8%, rgba(110,110,240,.20), transparent 70%),
    radial-gradient(50% 30% at 10% 40%, rgba(43,179,163,.10), transparent 70%),
    radial-gradient(80% 40% at 50% 100%, rgba(60,90,200,.16), transparent 70%),
    linear-gradient(180deg, #060A18 0%, #04070F 100%); }
.sc-sky::after { content: ""; position: absolute; inset: 0; opacity: .35;
  background-image: radial-gradient(rgba(255,255,255,.035) 1px, transparent 1px); background-size: 3px 3px; }
.sc-wrap { max-width: 1360px; margin: 0 auto; padding: 0 clamp(16px, 3vw, 40px); }

/* ---- top bar ---- */
.sc-bar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 22px 0 8px; }
.sc-brand { display: flex; align-items: baseline; gap: 14px; }
.sc-brand b { font-family: Fraunces, Georgia, serif; font-weight: 600; font-size: 1.05rem; color: var(--ink-2); }
/* The site nav directly above already carries the HealthCompass name; showing it twice read as a duplicate bar. */
.sc-brand b { display: none; }
.sc-brand span { font: 600 .7rem/1 var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--teal); }
.sc-bar-r { display: flex; gap: 10px; align-items: center; }
.sc-pill { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px;
  border: 1px solid var(--line-2); border-radius: 999px; font: 500 .82rem/1 Inter, sans-serif;
  color: var(--ink-2); background: rgba(12,19,38,.55); cursor: pointer; }
.sc-pill i { width: 7px; height: 7px; border-radius: 50%; background: var(--teal); box-shadow: 0 0 10px var(--teal); }
.sc-pill[aria-pressed="true"] i { background: #EBB352; box-shadow: 0 0 10px #EBB352; }
.sc-iconbtn { width: 44px; height: 44px; border-radius: 12px; border: 1px solid var(--line-2);
  display: grid; place-items: center; color: var(--ink-2); background: rgba(12,19,38,.55); cursor: pointer; }

/* ---- hero: copy + readout | timer ring ---- */
.sc-main { display: grid; grid-template-columns: minmax(0,1fr) minmax(320px, 500px); gap: 56px; align-items: center; padding: 20px 0 0; }
.sc-eyebrow { font: 600 .74rem/1 var(--mono); letter-spacing: .22em; text-transform: uppercase; color: var(--ink-3);
  display: flex; align-items: center; gap: 12px; }
.sc-eyebrow::before { content: ""; width: 28px; height: 1px; background: var(--teal); opacity: .7; }
.sc h1 { font-family: Fraunces, Georgia, serif; font-weight: 500; font-size: clamp(2.6rem, 6.2vw, 5.4rem);
  line-height: .98; letter-spacing: -.035em; margin: 22px 0 0; color: var(--ink); }
.sc h1 em { font-style: italic; font-weight: 400; color: #CFCBFF; }
.sc-lede { max-width: 46ch; margin: 22px 0 0; color: var(--ink-2); font-size: 1.05rem; line-height: 1.7; }
.sc-readout { display: flex; margin-top: 36px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); max-width: 620px; }
.sc-ro { flex: 1; padding: 16px 0 16px 18px; border-left: 1px solid var(--line); min-width: 0; }
.sc-ro:first-child { border-left: 0; padding-left: 0; }
.sc-ro small { display: block; font: 600 .66rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 9px; }
.sc-ro b { font: 500 1.55rem/1 var(--mono); letter-spacing: -.01em; font-variant-numeric: tabular-nums; }
.sc-ro b sub { font-size: .7rem; color: var(--ink-3); vertical-align: baseline; margin-left: 3px; }
.sc-ro.l b { color: var(--L); } .sc-ro.r b { color: var(--R); } .sc-ro.k b { color: var(--teal); }
.sc-ro.off b { color: var(--ink-3); }
.sc-ear { display: inline-block; width: 16px; height: 16px; border-radius: 50%; border: 1.5px solid currentColor;
  font: 700 .55rem/13px var(--mono); text-align: center; margin-right: 6px; vertical-align: 1px; }

.sc-stage { position: relative; aspect-ratio: 1; width: 100%; max-width: 500px; justify-self: center; }
.sc-ring { position: absolute; inset: 0; width: 100%; height: 100%; }
.sc-ring-c { position: absolute; inset: 0; display: grid; place-items: center; text-align: center; }
.sc-preset-nm { font-family: Fraunces, Georgia, serif; font-style: italic; font-size: 1.25rem; color: var(--ink-2); margin-bottom: 14px; }
.sc-time { font: 500 clamp(2.8rem, 7vw, 4.2rem)/1 var(--mono); letter-spacing: -.03em; font-variant-numeric: tabular-nums; }
.sc-tsub { font: 600 .7rem/1.5 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); margin-top: 12px; max-width: 300px; margin-left: auto; margin-right: auto; }
.sc-ctrls { display: flex; gap: 14px; align-items: center; justify-content: center; margin-top: 22px; }
.sc-play { width: 76px; height: 76px; border-radius: 50%; border: 1px solid rgba(95,224,207,.5); display: grid; place-items: center;
  color: var(--ink); cursor: pointer;
  background: radial-gradient(circle at 50% 35%, rgba(95,224,207,.24), rgba(95,224,207,.05));
  box-shadow: 0 0 0 10px rgba(95,224,207,.04), 0 0 50px rgba(95,224,207,.18);
  transition: transform .4s var(--ease), box-shadow .6s var(--ease); }
.sc-play:hover { box-shadow: 0 0 0 12px rgba(95,224,207,.06), 0 0 60px rgba(95,224,207,.24); }
.sc-play:active { transform: scale(.97); }
.sc-stop { width: 48px; height: 48px; border-radius: 50%; border: 1px solid var(--line-2); background: rgba(12,19,38,.55);
  color: var(--ink-2); display: grid; place-items: center; cursor: pointer; }
.sc-stop[disabled] { opacity: .35; cursor: default; }

/* ---- calm waveform ---- */
.sc-wave { position: relative; height: 110px; margin: 36px 0 0; }
.sc-wave canvas { width: 100%; height: 100%; display: block; }
.sc-wave-lab { position: absolute; left: 0; top: -4px; font: 600 .66rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); }

/* ---- presets ---- */
.sc-h2 { font-family: Fraunces, Georgia, serif; font-weight: 550; font-size: clamp(1.4rem, 2.4vw, 1.9rem); letter-spacing: -.02em; margin: 0; color: var(--ink); }
.sc-sechead { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; margin: 44px 0 16px; }
.sc-sechead p { margin: 0; color: var(--ink-3); font-size: .86rem; }
/* Presets lead the page (Mike: "most of us will use the presets").
   Seven cards on four columns: the first spans two, so 2 + 6 = 8 cells,
   two full rows; on two columns, 2 + 6 = 8 again; one column on phones. */
.sc-filters { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 14px; }
.sc-presets { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
/* An open "Why this mix" takes the whole row so its neighbours keep their size. */
.sc-pc:has(.sc-pc-whytext) .sc-pc-whytext { columns: 2 340px; column-gap: 32px; }
.sc-pc-whytext > * { break-inside: avoid; }
.sc-presets > .sc-pc:first-child:nth-last-child(7) { grid-column: span 2; }
.sc-presets > .sc-pc.sc-pc:nth-child(n):has(.sc-pc-whytext) { grid-column: 1 / -1; }
.sc-pc { position: relative; border: 1px solid var(--line); border-radius: 14px; display: flex; flex-direction: column;
  background: rgba(7,12,26,.62); color: var(--ink); transition: border-color .4s var(--ease), background-color .4s var(--ease); }
.sc-pc:hover { border-color: var(--line-2); }
.sc-pc.on { border-color: rgba(95,224,207,.55); background: linear-gradient(180deg, rgba(43,179,163,.15), rgba(7,12,26,.62)); }
.sc-pc-main { display: flex; flex-direction: column; text-align: left; font: inherit; color: inherit; background: none; border: 0;
  padding: 18px 16px 10px; cursor: pointer; min-height: 150px; border-radius: 14px 14px 0 0; }
.sc-pc-top { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 14px; }
.sc-pc-top svg { height: 30px; }
.sc-pc-go { font: 600 .66rem/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--teal);
  border: 1px solid rgba(95,224,207,.4); border-radius: 999px; padding: 7px 11px; }
.sc-pc.on .sc-pc-go { background: rgba(95,224,207,.14); }
.sc-pc b { font-family: Fraunces, Georgia, serif; font-weight: 550; font-size: 1.2rem; line-height: 1.15; }
.sc-pc small { font-size: .86rem; color: var(--ink-2); margin-top: 6px; line-height: 1.45; }
.sc-pc-mix { margin-top: 10px; font: 500 .74rem/1.4 var(--mono); color: var(--ink-3); letter-spacing: .02em; }
.sc-pc-meta { padding: 0 16px; display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; justify-content: space-between; }
.sc-pc .tg { font: 600 .62rem/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3); }
.sc-pc .tg.sp { color: #8FD9A8; }
.sc-pc-ev { display: flex; flex-wrap: wrap; gap: 6px 10px; }
.sc-pc-act { display: flex; justify-content: space-between; align-items: center; gap: 8px; padding: 6px 8px 8px 8px; margin-top: auto; border-top: 1px solid var(--line); }
.sc-pc-why, .sc-pc-fav { min-height: 44px; border: 0; background: none; color: var(--ink-2); font: 500 .82rem/1 Inter, sans-serif; cursor: pointer; padding: 0 10px; border-radius: 10px; }
.sc-pc-why:hover, .sc-pc-fav:hover { color: var(--ink); background: rgba(160,180,255,.06); }
.sc-pc-fav { min-width: 44px; font-size: 1.15rem; color: var(--ink-3); }
.sc-pc-fav[aria-pressed="true"] { color: #EBB352; }
.sc-pc-whytext { padding: 4px 16px 16px; border-top: 1px dashed var(--line-2); }
.sc-pc-whytext p { font-size: .86rem; line-height: 1.6; color: var(--ink-2); margin: 10px 0 0; }
.sc-pc-whytext .sc-pc-tn { font: 600 .68rem/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); }
.sc-pc-whytext ul { margin: 10px 0 0; padding-left: 18px; }
.sc-pc-whytext li { font-size: .8rem; line-height: 1.55; color: var(--ink-3); margin-bottom: 6px; }
.sc-inline { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 16px; margin-top: 14px; color: var(--ink-2); font-size: .88rem; }
.sc-btn.sm { width: auto; min-height: 44px; padding: 0 18px; font-size: .88rem; }
.sc-tone { margin-top: 16px; }

/* ---- five ways in ---- */
.sc-cats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 10px; margin-top: 34px; }
.sc-cat { display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 12px; row-gap: 3px; align-items: center; text-align: left;
  min-height: 64px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: rgba(12,19,38,.55); color: var(--ink); font: inherit; cursor: pointer;
  transition: border-color .4s var(--ease); }
.sc-cat:hover { border-color: var(--line-2); }
.sc-cat-ic { grid-row: span 2; color: var(--teal); display: inline-flex; }
.sc-cat b { font-weight: 600; font-size: .92rem; }
.sc-cat small { font-size: .76rem; color: var(--ink-3); line-height: 1.35; }

/* ---- guided relaxation ---- */
.sc-guides { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.sc-gc { border: 1px solid var(--line); border-radius: 14px; background: rgba(7,12,26,.62); padding: 18px 16px 16px; display: flex; flex-direction: column; }
.sc-gc-h { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 6px 10px; margin-bottom: 8px; }
.sc-gc-h b { font-family: Fraunces, Georgia, serif; font-weight: 550; font-size: 1.1rem; }
.sc-gc > p { font-size: .88rem; line-height: 1.55; color: var(--ink-2); margin: 0 0 10px; }
.sc-gc .sc-btn { margin-top: auto; }
.sc-gc-wide { grid-column: 1 / -1; }
.sc-check { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 320px), 1fr)); gap: 6px 18px; }
.sc-check button { width: 100%; min-height: 44px; display: flex; gap: 12px; align-items: flex-start; text-align: left; padding: 10px 6px; background: none; border: 0;
  border-bottom: 1px solid var(--line); color: var(--ink-2); font: 400 .88rem/1.45 Inter, sans-serif; cursor: pointer; }
.sc-check .bx { flex-shrink: 0; width: 20px; height: 20px; border-radius: 5px; border: 1.5px solid var(--line-2); display: grid; place-items: center; color: #06110F; font-size: .78rem; font-weight: 700; margin-top: 1px; }
.sc-check button[aria-checked="true"] { color: var(--ink-3); }
.sc-check button[aria-checked="true"] .bx { background: var(--teal); border-color: var(--teal); }
.sc-gopts { display: flex; flex-wrap: wrap; gap: 10px 36px; align-items: center; margin-top: 14px; }
.sc-gopt { display: flex; align-items: center; gap: 12px; }
.sc-gopt .sc-chips { padding: 0; }
.sc-voice { margin-top: 10px; }
/* Portalled full-screen layers (guide, ultra-dark) carry the .sc tokens but take no space. */
.sc.sc-layer { position: static; min-height: 0; height: 0; padding: 0; margin: 0; background: none; overflow: visible; isolation: auto; }
.sc-guide { position: fixed; inset: 0; z-index: 9700; background: radial-gradient(70% 60% at 50% 40%, #0C1430 0%, #03060D 75%); color: var(--ink);
  display: grid; place-items: center; padding: 24px; outline: none; }
.sc-guide-in { width: min(640px, 100%); text-align: center; }
.sc-guide-k { font: 600 .7rem/1.4 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: var(--ink-3); margin-bottom: 26px; }
.sc-orb-wrap { width: min(260px, 62vw); aspect-ratio: 1; margin: 0 auto 28px; display: grid; place-items: center; }
.sc-orb { width: 100%; height: 100%; border-radius: 50%; transition: transform .25s linear;
  background: radial-gradient(circle at 50% 45%, rgba(95,224,207,.42), rgba(110,120,240,.18) 55%, rgba(110,120,240,0) 72%);
  box-shadow: 0 0 0 1px rgba(160,180,255,.14) inset; }
.sc-guide-t { font-family: Fraunces, Georgia, serif; font-weight: 450; font-size: clamp(1.9rem, 6vw, 3rem); line-height: 1.15; letter-spacing: -.01em; animation: sc-in 1.6s var(--ease) both; }
.sc-guide-d { font-size: clamp(1.05rem, 2.6vw, 1.3rem); line-height: 1.6; color: var(--ink-2); margin: 18px auto 0; max-width: 34ch; animation: sc-in 2.2s var(--ease) both; }
@keyframes sc-in { from { opacity: 0; } to { opacity: 1; } }
.sc-guide-bar { height: 2px; background: rgba(160,180,255,.12); border-radius: 2px; margin: 34px auto 10px; max-width: 360px; overflow: hidden; }
.sc-guide-bar i { display: block; height: 100%; background: linear-gradient(90deg, #6EA8FF, #5FE0CF); }
.sc-guide-time { font: 500 .8rem/1 var(--mono); color: var(--ink-3); font-variant-numeric: tabular-nums; }
.sc-guide-ctl { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 26px; }
.sc-guide-ctl button { min-height: 44px; min-width: 88px; padding: 0 16px; border-radius: 10px; border: 1px solid var(--line-2); background: none; color: var(--ink-2); font: 500 .9rem/1 Inter, sans-serif; cursor: pointer; }
.sc-guide-ctl button.pri { background: var(--hc-teal-btn, #008578); border-color: transparent; color: #fff; }
.sc-guide-hint { font-size: .74rem; color: var(--ink-3); margin-top: 18px; }

/* ---- soundscapes ---- */
.sc-scapes { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.sc-scape { border: 1px solid var(--line); border-radius: 12px; background: rgba(7,12,26,.62); padding: 12px 14px 10px; transition: border-color .4s var(--ease), background-color .4s var(--ease); }
.sc-scape.on { border-color: rgba(95,224,207,.45); background: linear-gradient(180deg, rgba(43,179,163,.12), rgba(7,12,26,.62)); }
.sc-scape-h { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.sc-scape-h b { font-weight: 600; font-size: .92rem; }
.sc-scape small { display: block; font-size: .74rem; color: var(--ink-3); margin: 0 0 6px; }
.sc-warnline { margin: 14px 0 0; padding: 12px 14px; border-left: 3px solid #EBB352; background: rgba(235,179,82,.07); border-radius: 0 10px 10px 0; font-size: .86rem; line-height: 1.6; color: var(--ink-2); }
.sc-steps { margin: 0 0 12px; padding-left: 20px; }
.sc-steps li { font-size: .86rem; line-height: 1.55; color: var(--ink-2); margin-bottom: 6px; }

/* ---- studio ---- */
.sc-studio { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr); gap: 16px; align-items: start; }
/* min-width:0 everywhere in the studio: grid tracks otherwise size to their
   content's min-content width and the panels ran 40px past a 390px screen. */
.sc-col { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; min-width: 0; }
.sc-sec, .sc-sec > * { min-width: 0; }
.sc-sec { border: 1px solid var(--line); border-radius: 16px; background: linear-gradient(180deg, rgba(18,27,51,.72), rgba(10,15,30,.72)); padding: 18px 20px 10px; }
.sc-sec-h { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 8px; min-height: 44px; }
.sc-sec-h b, .sc-lab { font: 600 .7rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); }
.sc-sw { width: 44px; height: 44px; display: grid; place-items: center; border: 0; background: none; cursor: pointer; padding: 0; flex-shrink: 0; }
.sc-sw i { width: 22px; height: 22px; border-radius: 6px; border: 1.5px solid var(--line-2); display: block; transition: background-color .3s var(--ease); }
.sc-sw[aria-checked="true"] i { background: var(--teal-d); border-color: var(--teal-d); box-shadow: inset 0 0 0 4px rgba(4,7,15,.55); }
.sc-bin { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 4px 0 12px; }
/* v2.51.0 review: on narrow phones the two steppers (44 + value + 44 each) pressed
   against the card edge - stack them instead. min-width:0 lets grid cells shrink. */
.sc-bin > * { min-width: 0; }
@media (max-width: 430px) { .sc-bin { grid-template-columns: 1fr; } }
.sc-stp { border: 1px solid var(--line); border-radius: 12px; padding: 12px; display: flex; flex-direction: column; gap: 8px; }
.sc-stp > div { display: flex; align-items: center; justify-content: space-between; gap: 6px; }
.sc-stp output { font: 500 1.3rem/1 var(--mono); font-variant-numeric: tabular-nums; color: var(--ink); }
.sc-stp output sub { font-size: .66rem; color: var(--ink-3); vertical-align: baseline; margin-left: 2px; }
.sc-stp button { width: 44px; height: 44px; border-radius: 10px; border: 1px solid var(--line-2); background: none; color: var(--ink-2); font: 500 1.1rem/1 Inter, sans-serif; cursor: pointer; }
.sc-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 6px 0 12px; }
.sc-chip { min-height: 44px; min-width: 52px; justify-content: center; padding: 0 14px; border: 1px solid var(--line-2); border-radius: 999px;
  display: inline-flex; align-items: center; font: 500 .85rem/1 Inter, sans-serif; color: var(--ink-2); background: none; cursor: pointer;
  transition: background-color .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease); }
.sc-chip[aria-pressed="true"] { border-color: var(--teal); color: #06110F; background: var(--teal); }
.sc-chips.tm { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); }
.sc-row { display: grid; grid-template-columns: 44px 1fr 44px; column-gap: 10px; align-items: center; padding: 6px 0; border-top: 1px solid var(--line); }
.sc-row:first-of-type { border-top: 0; }
.sc-row .ln b { display: block; font-weight: 600; font-size: .95rem; color: var(--ink); }
.sc-row .ln small { font-size: .78rem; color: var(--ink-3); }
.sc-row .val { font: 500 .85rem/1 var(--mono); color: var(--ink-2); text-align: right; font-variant-numeric: tabular-nums; }
.sc-row input[type=range] { grid-column: 2 / 4; }
.sc-lr { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; font: 600 .7rem/1 var(--mono); letter-spacing: .12em; color: var(--ink-3); }

/* range input: 44px hit area, 4px track */
.sc input[type=range] { -webkit-appearance: none; appearance: none; width: 100%; height: 44px; background: transparent; margin: 0; cursor: pointer; --p: 50%; }
.sc input[type=range]::-webkit-slider-runnable-track { height: 4px; border-radius: 2px;
  background: linear-gradient(90deg, var(--blue), var(--teal)) 0 / var(--p) 100% no-repeat, rgba(160,180,255,.16); }
.sc input[type=range]::-moz-range-track { height: 4px; border-radius: 2px; background: rgba(160,180,255,.16); }
.sc input[type=range]::-moz-range-progress { height: 4px; border-radius: 2px; background: linear-gradient(90deg, var(--blue), var(--teal)); }
.sc input[type=range]::-webkit-slider-thumb { -webkit-appearance: none; width: 18px; height: 18px; border-radius: 50%; background: #E9EEF8; margin-top: -7px; box-shadow: 0 0 0 5px rgba(95,224,207,.18); }
.sc input[type=range]::-moz-range-thumb { width: 18px; height: 18px; border: 0; border-radius: 50%; background: #E9EEF8; box-shadow: 0 0 0 5px rgba(95,224,207,.18); }
.sc input[type=range].bal::-webkit-slider-runnable-track { background: linear-gradient(90deg, var(--L), var(--R)); opacity: .55; }
.sc input[type=range][disabled] { opacity: .4; cursor: default; }

.sc-btn { width: 100%; min-height: 50px; border-radius: 12px; border: 0; background: var(--hc-teal-btn, #008578); color: #fff; font: 600 .95rem/1 Inter, sans-serif; cursor: pointer; transition: background-color .25s var(--ease); }
.sc-btn:hover { background: var(--hc-teal-btn-hover, #006E63); }
.sc-btn.ghost { background: none; border: 1px solid var(--line-2); color: var(--ink); }
.sc-btn.ghost:hover { border-color: var(--ink-3); background: none; }
.sc-two { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 6px 0 12px; }
.sc-mixes { list-style: none; margin: 4px 0 12px; padding: 0; display: grid; gap: 6px; }
.sc-mixes li { display: grid; grid-template-columns: 1fr auto; gap: 6px; align-items: center; border: 1px solid var(--line); border-radius: 10px; padding-left: 12px; }
.sc-mixes li button { min-height: 44px; background: none; border: 0; color: var(--ink); text-align: left; font: 500 .9rem/1.3 Inter, sans-serif; cursor: pointer; }
.sc-mixes li button.del { color: var(--ink-3); padding: 0 14px; font-size: .8rem; }
.sc-small { font-size: .82rem; color: var(--ink-3); line-height: 1.6; margin: 0 0 12px; }
.sc-small b { color: var(--ink-2); }

/* ---- notes ---- */
.sc-notes { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 0; border-top: 1px solid var(--line); margin-top: 44px; }
.sc-note { padding: 22px 22px 22px 0; border-bottom: 1px solid var(--line); }
.sc-note h3 { font: 600 .7rem/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 12px; }
.sc-note p { margin: 0 0 10px; font-size: .9rem; line-height: 1.65; color: var(--ink-2); }
.sc-ev { display: grid; gap: 12px; }
.sc-ev > div { display: grid; gap: 6px; }
.sc-ev p { margin: 0; }

/* ---- banners ---- */
.sc-banner { position: sticky; top: 72px; z-index: 5; margin: 12px 0 0; border: 1px solid rgba(235,179,82,.45); background: rgba(26,20,8,.92);
  color: #F5DDB0; border-radius: 12px; padding: 12px 16px; display: flex; gap: 12px; align-items: center; justify-content: space-between; }
.sc-banner button { min-height: 44px; padding: 0 16px; border-radius: 10px; border: 0; background: #EBB352; color: #1A1408; font: 600 .9rem/1 Inter, sans-serif; cursor: pointer; }

/* ---- ultra-dark listening mode ---- */
.sc-ultra { position: fixed; inset: 0; z-index: 9600; background: #000; display: grid; place-items: center; border: 0; width: 100%; color: #8E99B0; cursor: pointer; }
.sc-ultra-t { font: 500 3rem/1 var(--mono); letter-spacing: -.02em; font-variant-numeric: tabular-nums; color: #8E99B0; }
.sc-ultra-s { font: 600 .72rem/1.6 var(--mono); letter-spacing: .2em; text-transform: uppercase; color: #6F7A90; margin-top: 14px; }
.sc-ultra-x { position: fixed; top: 16px; right: 16px; z-index: 9601; min-height: 44px; padding: 0 16px; border-radius: 10px; border: 1px solid #1E2433; background: #000; color: #8E99B0; font: 500 .85rem/1 Inter, sans-serif; cursor: pointer; }

/* ---- focus ---- */
.sc button:focus-visible, .sc input:focus-visible, .sc a:focus-visible, .sc-ultra:focus-visible, .sc-ultra-x:focus-visible { outline: 3px solid var(--teal); outline-offset: 2px; }
.sc-sr { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* ---- responsive ---- */
@media (max-width: 1080px) {
  .sc-presets, .sc-guides { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sc-scapes { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sc-cats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .sc-studio { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 860px) {
  .sc-main { grid-template-columns: 1fr; gap: 8px; }
  .sc-stage { max-width: 340px; margin-top: 20px; }
}
@media (max-width: 560px) {
  .sc-brand b { display: none; }
  .sc h1 { font-size: 2.6rem; margin-top: 14px; }
  .sc-lede { font-size: .96rem; margin-top: 12px; }
  .sc-stage { max-width: 300px; }
  .sc-ro { padding: 13px 0 13px 12px; }
  .sc-ro b { font-size: 1.15rem; }
  .sc-wave { height: 70px; margin-top: 22px; }
  .sc-presets, .sc-guides { grid-template-columns: minmax(0, 1fr); }
  .sc-presets > .sc-pc:first-child:nth-last-child(7) { grid-column: auto; }
  .sc-scapes { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .sc-cats { grid-template-columns: minmax(0, 1fr); }
  .sc-cat { min-height: 56px; }
  .sc-sec { padding: 14px 14px 8px; }
  .sc-brand span { white-space: nowrap; }
  .sc-pill { padding: 0 12px; font-size: .78rem; white-space: nowrap; }
  .sc-tsub { max-width: 200px; letter-spacing: .14em; }
  .sc-sechead { display: block; }
  .sc-sechead p { margin-top: 6px; }
  .sc-bin { gap: 8px; }
  .sc-stp { padding: 10px 8px; }
}
@media (prefers-reduced-motion: reduce) {
  .sc-play, .sc-pc, .sc-chip, .sc-sw i, .sc-orb, .sc-cat, .sc-scape { transition: none; }
  .sc-guide-t, .sc-guide-d { animation: none; }
}

/* ============================================================
   SC3 - beat delivery, gradual descent, blind self-test
   ============================================================ */
/* segmented "Listening on" control */
.sc-beatopts { border-top: 1px solid var(--line); margin-top: 6px; padding-top: 14px; }
.sc-seg { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; margin: 8px 0 12px; }
.sc-seg-b { min-height: 56px; padding: 8px 10px; border: 1px solid var(--line-2); border-radius: 12px; background: rgba(4,7,15,.35);
  color: var(--ink-2); text-align: left; cursor: pointer; display: flex; flex-direction: column; justify-content: center; gap: 4px;
  transition: border-color .3s var(--ease), background-color .3s var(--ease), color .3s var(--ease); }
.sc-seg-b b { font: 600 .86rem/1.1 Inter, sans-serif; color: var(--ink); }
.sc-seg-b small { font: 500 .72rem/1.2 Inter, sans-serif; color: var(--ink-3); }
.sc-seg-b:hover { border-color: var(--ink-3); }
.sc-seg-b[aria-pressed="true"] { border-color: var(--teal); background: rgba(95,224,207,.10); }
.sc-seg-b[aria-pressed="true"] small { color: var(--ink-2); }
.sc-seg-b:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; }
.sc-optnote { display: flex; flex-direction: column; gap: 6px; margin: 0 0 12px; padding: 12px 14px; border-left: 2px solid var(--hc-ev-preliminary); background: rgba(235,179,82,.06); border-radius: 0 10px 10px 0; }
.sc-optnote p { margin: 0; font-size: .82rem; line-height: 1.55; color: var(--ink-2); }
.sc-desc-h { margin-top: 4px; }
.sc-desc-h > span { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sc-tag { font: 600 .62rem/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--ink-2);
  border: 1px solid var(--line-2); border-radius: 999px; padding: 5px 8px; }
.sc-desc { padding-bottom: 2px; }
.sc-desc-to output { color: var(--ink-2); }

/* blind-night panel (replaces the frequency readout) */
.sc-blind { margin-top: 36px; max-width: 620px; padding: 18px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sc-blind p { margin: 10px 0 14px; color: var(--ink-2); font-size: .95rem; line-height: 1.6; }
.sc-banner-st { border-color: rgba(95,224,207,.45); background: rgba(6,24,24,.92); }
.sc-banner-st button { background: var(--teal); color: #06110F; }

/* self-test section */
.sc-st-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 28px 48px; align-items: start; }
.sc-st-big { font-family: Fraunces, Georgia, serif; font-weight: 450; font-size: clamp(1.15rem, 1.8vw, 1.45rem); line-height: 1.45; letter-spacing: -.01em; color: var(--ink); margin: 0 0 18px; }
.sc-st-big em { font-style: italic; color: var(--teal); }
.sc-st-facts { list-style: none; margin: 0 0 16px; padding: 0; border-top: 1px solid var(--line); }
.sc-st-facts li { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: .88rem; line-height: 1.6; color: var(--ink-2); }
.sc-st-facts b { color: var(--ink); }
.sc-st-form .sc-btn { margin: 4px 0 14px; }
.sc-st-form .sc-btn:disabled { background: rgba(160,180,255,.12); color: var(--ink-3); cursor: not-allowed; }
.sc-st-row { display: grid; grid-template-columns: minmax(150px, 200px) minmax(0, 1fr); gap: 14px; align-items: center; margin: 6px 0 4px; }
.sc-st-row .sc-small { margin: 0; }
.sc-st-consent { position: relative; display: flex; gap: 12px; align-items: flex-start; padding: 12px 0 12px 0; min-height: 44px; cursor: pointer; font-size: .86rem; line-height: 1.55; color: var(--ink-2); }
/* real checkbox = a 44px invisible hit area over the drawn box */
.sc-st-consent input { position: absolute; left: -11px; top: 0; width: 44px; height: 44px; margin: 0; opacity: 0; cursor: pointer; }
.sc-st-consent .bx { flex-shrink: 0; width: 22px; height: 22px; margin-top: 1px; border-radius: 6px; border: 1.5px solid var(--line-2); display: grid; place-items: center;
  transition: background-color .3s var(--ease), border-color .3s var(--ease); }
.sc-st-consent input:checked + .bx { background: var(--teal-d); border-color: var(--teal-d); }
.sc-st-consent input:checked + .bx::after { content: ""; width: 10px; height: 5px; border-left: 2px solid #fff; border-bottom: 2px solid #fff; transform: translateY(-1px) rotate(-45deg); }
.sc-st-consent input:focus-visible + .bx { outline: 2px solid var(--teal); outline-offset: 3px; }
.sc-st-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 14px 0; }
.sc-st-del { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; color: var(--ink-2); font-size: .86rem; }
.sc-btn.danger { background: #B3364A; }
.sc-btn.danger:hover { background: #962B3D; }
.sc-st-prog { display: flex; flex-wrap: wrap; gap: 5px; margin: 0 0 18px; }
.sc-st-prog i { width: 18px; height: 6px; border-radius: 3px; background: rgba(160,180,255,.14); }
.sc-st-prog i.played { background: rgba(140,140,245,.55); }
.sc-st-prog i.done { background: var(--teal-d); }
.sc-st-note { color: var(--ink-2); }
.sc-st-check { border-color: rgba(95,224,207,.35); }
.sc-st-check .sc-lab { display: block; margin-top: 6px; }
.sc-st-check [data-lat] { flex: 1 1 auto; }
.sc-st-res { max-width: 980px; }
.sc-st-verdict { padding: 0 0 8px; }
.sc-st-verdict p:not(.sc-st-big) { color: var(--ink-2); font-size: .92rem; margin: 0 0 18px; }
.sc-st-verdict .sc-lab { display: block; margin-bottom: 14px; }
.sc-st-table { border-top: 1px solid var(--line-2); margin: 0 0 16px; }
.sc-st-table > div { display: grid; grid-template-columns: minmax(0, 1.6fr) repeat(2, minmax(0, 1fr)) minmax(0, .9fr); gap: 10px; padding: 13px 0; border-bottom: 1px solid var(--line); align-items: baseline; font-size: .9rem; color: var(--ink-2); }
.sc-st-table > div.hd { font: 600 .66rem/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--ink-3); }
.sc-st-table b { font: 500 1.05rem/1.2 var(--mono); color: var(--ink); font-variant-numeric: tabular-nums; }
.sc-st-table > div > span:last-child { font: 500 .8rem/1.2 var(--mono); color: var(--ink-3); }
@media (max-width: 860px) { .sc-st-grid { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 560px) {
  .sc-seg { grid-template-columns: minmax(0, 1fr); }
  .sc-seg-b { min-height: 48px; flex-direction: row; align-items: center; justify-content: space-between; }
  .sc-st-row { grid-template-columns: minmax(0, 1fr); }
  .sc-st-table > div { grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(0, 1fr)); }
  .sc-st-table > div > span:last-child { grid-column: 1 / -1; padding-top: 0; }
  .sc-st-table > div.hd > span:last-child { display: none; }
}
@media (prefers-reduced-motion: reduce) { .sc-seg-b, .sc-st-consent .bx { transition: none; } }
.sc-st-check .sc-q { display: block; margin: 12px 0 2px; font: 500 .92rem/1.45 Inter, sans-serif; color: var(--ink); }