/* Murmur site — shared design system (Nocturne / Amethyst). No CDN: fonts are local. */
@font-face{font-family:'Fraunces';font-weight:300 700;font-display:swap;src:url('../fonts/Fraunces-Variable.ttf') format('truetype')}
@font-face{font-family:'GeneralSans';font-weight:400;font-display:swap;src:url('../fonts/GeneralSans-Regular.ttf') format('truetype')}
@font-face{font-family:'GeneralSans';font-weight:600;font-display:swap;src:url('../fonts/GeneralSans-Semibold.ttf') format('truetype')}
@font-face{font-family:'PlexMono';font-weight:400;font-display:swap;src:url('../fonts/IBMPlexMono-Regular.ttf') format('truetype')}

:root{
  --page:#100E18; --bg:#17151F; --surface:#231F31; --surface-2:#2C2740;
  --text:#ECE9F2; --muted:#A79CBE; --faint:#7A7194;
  --accent:#B9A3E8; --accent-2:#8E74D6; --accent-ink:#17151F;
  --line:rgba(185,163,232,.16); --line-2:rgba(185,163,232,.07); --glow:rgba(142,116,214,.4);
  --display:'Fraunces',Georgia,serif; --body:'GeneralSans',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --mono:'PlexMono',ui-monospace,'SF Mono',Menlo,monospace; --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--page);color:var(--text);font-family:var(--body);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
h1,h2,h3{font-family:var(--display);font-weight:460;letter-spacing:-.02em;line-height:1.06;text-wrap:balance;margin:0}
p{margin:0}a{color:inherit;text-decoration:none}svg{max-width:100%}
::selection{background:rgba(185,163,232,.28);color:#fff}
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--mono);font-size:11.5px;letter-spacing:.26em;text-transform:uppercase;color:var(--accent);font-weight:400}
.mut{color:var(--muted)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}

.ambient{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
.ambient::before{content:"";position:absolute;left:50%;top:-12%;width:min(900px,120vw);height:min(900px,120vw);
  transform:translateX(-50%);border-radius:50%;filter:blur(10px);
  background:radial-gradient(circle,rgba(142,116,214,.22),rgba(142,116,214,.07) 34%,transparent 62%)}
main,nav,footer{position:relative;z-index:2}

/* nav */
nav{position:sticky;top:0;z-index:50;backdrop-filter:blur(14px);
  background:linear-gradient(to bottom,rgba(16,14,24,.85),rgba(16,14,24,.4));border-bottom:1px solid var(--line-2)}
.nav-in{display:flex;align-items:center;gap:16px;height:64px;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.brand{display:flex;align-items:center;gap:11px;font-weight:600;font-size:18px;letter-spacing:-.01em}
.brand svg{width:34px;height:34px;border-radius:9px;box-shadow:0 4px 14px rgba(15,13,23,.5)}
.nav-links{display:flex;gap:26px;margin-left:auto;font-size:14.5px;color:var(--muted)}
.nav-links a:hover{color:var(--text)}
.nav-links a.here{color:var(--text)}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--body);font-weight:600;font-size:14.5px;
  padding:10px 18px;border-radius:999px;border:1px solid transparent;cursor:pointer;transition:transform .18s,box-shadow .25s,background .2s}
.btn-primary{background:linear-gradient(180deg,var(--accent),var(--accent-2));color:var(--accent-ink);box-shadow:0 6px 22px rgba(142,116,214,.4)}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 30px rgba(142,116,214,.55)}
@media(max-width:760px){.nav-links{display:none}}

/* document pages */
.doc{max-width:760px;margin:0 auto;padding:clamp(48px,8vw,96px) 24px clamp(60px,9vw,120px)}
.doc .eyebrow{display:block;margin-bottom:16px}
.doc h1{font-size:clamp(38px,6vw,62px);margin-bottom:14px}
.doc .updated{font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:.04em}
.doc .lead{margin-top:24px;font-size:clamp(18px,2.2vw,22px);color:var(--muted);font-family:var(--display);line-height:1.45}
.doc section{margin-top:44px}
.doc h2{font-size:clamp(22px,3vw,30px);margin-bottom:14px}
.doc h3{font-family:var(--body);font-weight:600;font-size:17px;letter-spacing:0;margin:22px 0 8px}
.doc p{color:var(--muted);margin-bottom:14px}
.doc p strong,.doc li strong{color:var(--text);font-weight:600}
.doc ul{color:var(--muted);margin:0 0 14px;padding-left:22px}
.doc li{margin-bottom:9px}
.doc a.link{color:var(--accent);border-bottom:1px solid rgba(185,163,232,.4)}
.doc a.link:hover{border-bottom-color:var(--accent)}
.doc .callout{margin:26px 0;padding:22px 24px;border-radius:18px;border:1px solid var(--line);
  background:radial-gradient(120% 100% at 0% 0%,rgba(185,163,232,.09),rgba(255,255,255,.01))}
.doc .callout p{color:var(--text);margin:0}
.doc .callout .rk{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:8px}
.doc hr{border:0;border-top:1px solid var(--line-2);margin:44px 0}
.back{display:inline-flex;align-items:center;gap:8px;margin-top:48px;font-size:14.5px;color:var(--muted)}
.back:hover{color:var(--text)}
.back svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2}

/* FAQ */
.faq{margin-top:32px;border-top:1px solid var(--line-2)}
.faq details{border-bottom:1px solid var(--line-2)}
.faq summary{list-style:none;cursor:pointer;padding:20px 0;font-family:var(--display);font-size:19px;color:var(--text);
  display:flex;justify-content:space-between;align-items:center;gap:16px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--body);color:var(--accent);font-size:22px;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{color:var(--muted);padding:0 0 20px;margin:0}
.contact{margin-top:36px;padding:26px;border-radius:20px;border:1px solid var(--line);background:linear-gradient(180deg,rgba(255,255,255,.028),transparent)}
.contact .em{font-family:var(--mono);font-size:clamp(18px,3vw,24px);color:var(--accent);margin-top:8px;display:inline-block}

/* footer */
footer{border-top:1px solid var(--line-2);padding:52px 0 40px;background:rgba(15,13,23,.5);margin-top:40px}
.foot-in{display:flex;flex-wrap:wrap;gap:28px;justify-content:space-between;align-items:flex-start;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.foot-brand{display:flex;align-items:center;gap:11px;font-weight:600}
.foot-brand svg{width:30px;height:30px;border-radius:8px}
.foot-cols{display:flex;gap:56px;flex-wrap:wrap}
.foot-col h4{font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);font-weight:400;margin:0 0 14px}
.foot-col a{display:block;color:var(--muted);font-size:14.5px;margin-bottom:10px}
.foot-col a:hover{color:var(--text)}
.foot-bottom{max-width:var(--maxw);margin:40px auto 0;padding:22px 24px 0;border-top:1px solid var(--line-2);
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;font-size:13px;color:var(--faint)}
.foot-bottom .mono{font-family:var(--mono);letter-spacing:.04em}

/* 404 */
.nf{min-height:70vh;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:80px 24px}
.nf .big{font-family:var(--display);font-size:clamp(80px,18vw,180px);line-height:1;
  background:linear-gradient(120deg,var(--accent),#E7DAFF 55%,var(--accent-2));-webkit-background-clip:text;background-clip:text;color:transparent}
.nf p{color:var(--muted);margin:18px 0 30px;font-size:18px}