/* Frequency Lab sound guides: same colours and type as the Lab's Home screen */
@font-face{font-family:'Space Grotesk';font-style:normal;font-weight:300 700;font-display:swap;src:url(../fonts/space-grotesk-latin.woff2) format('woff2')}
@font-face{font-family:'JetBrains Mono';font-style:normal;font-weight:100 800;font-display:swap;src:url(../fonts/jetbrains-mono-latin.woff2) format('woff2')}
:root{--bg:#030409;--card:#0b0d12;--line:rgba(255,255,255,.08);--text:#fff;--mut:rgba(255,255,255,.7);--faint:rgba(255,255,255,.5);
  --cyan:#3ae7ff;--meas:#5EEAD4;--lore:#F472B6;--study:#ffd36a;
  --disp:"Space Grotesk",system-ui,-apple-system,sans-serif;--sans:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;--mono:"JetBrains Mono",ui-monospace,Menlo,monospace;
  color-scheme:dark}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:radial-gradient(90% 40% at 50% -10%,rgba(58,231,255,.09),transparent 62%),var(--bg);background-color:var(--bg);color:var(--text);
  font:400 17px/1.6 var(--sans);-webkit-tap-highlight-color:transparent}
.wrap{max-width:680px;margin:0 auto;padding:0 16px 64px}
a{color:var(--cyan);text-underline-offset:3px}
a:hover{color:#8ff1ff}
.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:20px 0 8px}
.mark{font:500 13px/1 var(--disp);letter-spacing:.3em;text-transform:uppercase;color:rgba(255,255,255,.7);text-decoration:none}
.bar nav a{font:500 14px/1 var(--disp);color:var(--mut);text-decoration:none;padding:12px 0;display:inline-block}
.bar nav a:hover{color:#fff}
h1{font:600 clamp(30px,7.4vw,44px)/1.08 var(--disp);letter-spacing:-.02em;margin:28px 0 12px;text-wrap:balance}
.lede{font-size:18px;color:var(--mut);margin:0 0 22px;text-wrap:pretty}
h2{font:600 24px/1.2 var(--disp);letter-spacing:-.01em;margin:44px 0 10px;text-wrap:balance}
h3{font:600 18px/1.3 var(--disp);margin:24px 0 6px}
p{margin:0 0 14px;text-wrap:pretty}
ul,ol{padding-left:22px;margin:0 0 14px}
li{margin:4px 0}
.mono{font-family:var(--mono);font-size:.92em}
strong{font-weight:600}

/* player */
.sp{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;margin:0 0 14px}
.sp-play{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:60px;border:0;border-radius:999px;background:#fff;color:#05070c;
  font:600 19px/1 var(--disp);cursor:pointer;transition:transform .12s ease}
.sp-play:active{transform:scale(.98)}
.sp-play:focus-visible,.sp button:focus-visible,.sp select:focus-visible,.sp input:focus-visible,.btn:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.sp-play[aria-pressed=true]{background:rgba(255,255,255,.12);color:#fff}
.sp-ico{font-size:15px}
.sp-row{display:flex;align-items:center;gap:10px 22px;margin-top:14px;flex-wrap:wrap}
.sp-grp{display:flex;align-items:center;gap:12px}
.sp-g-vol{flex:1 1 220px}
.sp-row label{font:500 13px/1 var(--disp);color:var(--faint);letter-spacing:.04em}
.sp-vol{flex:1;min-width:140px;accent-color:#fff;height:44px}
.sp-timer{background:#000;color:#fff;border:1px solid var(--line);border-radius:12px;padding:0 12px;min-height:44px;font:500 15px var(--sans)}
.sp-opts{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.sp-opts button{min-height:44px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:transparent;color:var(--mut);font:500 15px/1 var(--disp);cursor:pointer}
.sp-opts button[aria-pressed=true]{background:#fff;color:#05070c;border-color:#fff}
.sp-status{min-height:22px;margin:12px 2px 0;font:400 14px/1.4 var(--mono);color:var(--faint)}
.sp-note{margin:10px 2px 0;font-size:14px;color:var(--faint)}

/* buttons and cards */
.cta{display:flex;flex-wrap:wrap;gap:10px;margin:0 0 8px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:999px;border:1px solid rgba(255,255,255,.22);
  color:#fff;text-decoration:none;font:600 16px/1 var(--disp)}
.btn:hover{color:#fff;border-color:#fff}
.small{font-size:14px;color:var(--faint)}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;margin:18px 0}
.card h3{margin-top:0}
.prog{display:flex;gap:16px;align-items:center}
.prog p{margin:0}
.prog .btn{flex:none}
@media (max-width:520px){.prog{flex-direction:column;align-items:stretch}}

/* honesty labels, same colours as the Lab's measured / tradition tags */
.tag{display:inline-block;font:600 11px/1 var(--disp);letter-spacing:.12em;text-transform:uppercase;padding:5px 8px;border-radius:6px;vertical-align:2px;margin-right:6px}
.tag.meas{color:var(--meas);background:rgba(94,234,212,.1)}
.tag.lore{color:var(--lore);background:rgba(244,114,182,.1)}
.tag.study{color:var(--study);background:rgba(255,211,106,.1)}

/* tables */
.tbl{width:100%;border-collapse:collapse;margin:8px 0 16px;font-size:15px}
.tbl th,.tbl td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.tbl th{font:600 13px/1.2 var(--disp);color:var(--faint);letter-spacing:.04em}
.scroll{overflow-x:auto}

/* plate figures */
.figs{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px;margin:12px 0 16px}
.figs.two{grid-template-columns:repeat(2,1fr)}
.figs.three{grid-template-columns:repeat(3,1fr)}
@media (max-width:520px){.figs.three{gap:8px}.figs.three figcaption{font-size:12px}}
figure{margin:0}
figure img{display:block;width:100%;height:auto;aspect-ratio:1;border-radius:12px;border:1px solid var(--line);background:#06080f}
figcaption{font:400 13px/1.4 var(--sans);color:var(--faint);margin-top:6px}
figcaption b{color:#fff;font:600 14px var(--mono)}

/* FAQ */
details{border-bottom:1px solid var(--line);padding:4px 0}
summary{cursor:pointer;font:600 17px/1.4 var(--disp);padding:12px 0;list-style:none;min-height:44px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--faint);font-weight:400}
details[open] summary::after{content:"−"}
details p{color:var(--mut)}

/* related guides + sources + footer */
.rel{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px;margin:12px 0}
.rel a{display:block;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;color:#fff;text-decoration:none;font:600 16px/1.3 var(--disp)}
.rel a span{display:block;font:400 14px/1.4 var(--sans);color:var(--faint);margin-top:4px}
.rel a:hover{border-color:rgba(255,255,255,.3)}
.src{font-size:14px;color:var(--mut);padding-left:22px}
.src li{margin:6px 0}
.foot{margin-top:48px;padding-top:18px;border-top:1px solid var(--line);font-size:14px;color:var(--faint)}
.foot a{color:var(--mut)}