/* Lynceus: shared theme. Dark, mono-accented, zero-dependency. Brand: deep-sky cyan. */
:root{
  --bg:#06070d; --panel:#101524; --panel2:#141a2c; --line:#222a40;
  --ink:#e9ecf6; --muted:#8893ab; --faint:#5a6480;
  --cyan:#5ad1e6; --accent:#5ad1e6; --amber:#e6b85a; --violet:#a98bff; --rose:#ff7a8a;
  /* morphology class colours (match core/morphology CLASSES order) */
  --c-featured:#5ad1e6; --c-smooth:#e6b85a; --c-merger:#ff7a8a;
  --mono:"SF Mono",ui-monospace,Menlo,Consolas,monospace;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:radial-gradient(1200px 760px at 50% -12%,#121a30,#06070d 62%);
  color:var(--ink);min-height:100vh;
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
}
.wrap{max-width:1040px;margin:0 auto;padding:38px 24px 60px}

a.back{font-family:var(--mono);font-size:12px;letter-spacing:1.5px;color:var(--muted);text-decoration:none;text-transform:uppercase}
a.back:hover{color:var(--ink)}

header{margin:18px 0 24px}
.badge{font-family:var(--mono);font-size:12px;letter-spacing:3px;color:var(--cyan);text-transform:uppercase}
h1{font-size:40px;margin:8px 0 10px;letter-spacing:-.5px}
h1.grad{background:linear-gradient(90deg,var(--cyan),var(--violet));-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{color:var(--muted);font-size:15px;line-height:1.62;max-width:720px;margin:0}
.lede b{color:var(--ink);font-weight:600}
.sub{font-family:var(--mono);font-size:12.5px;letter-spacing:1px;color:var(--faint);margin-top:4px}

button.act{font-family:var(--mono);font-size:13px;letter-spacing:.5px;color:#06070d;background:var(--cyan);
  border:none;border-radius:8px;padding:9px 18px;cursor:pointer;font-weight:700}
button.act:hover{filter:brightness(1.08)}
button.ghost{font-family:var(--mono);font-size:12.5px;color:var(--ink);background:var(--panel2);
  border:1px solid var(--line);border-radius:8px;padding:8px 14px;cursor:pointer}
button.ghost:hover{border-color:var(--cyan)}
button:disabled{opacity:.4;cursor:not-allowed}
input[type=range]{accent-color:var(--cyan);cursor:pointer;vertical-align:middle}

.note{color:var(--muted);font-size:13.5px;line-height:1.65;margin-top:18px;max-width:760px}
.note h3{font-family:var(--mono);font-size:12px;letter-spacing:1px;text-transform:uppercase;color:var(--cyan);margin:0 0 8px}
.note b{color:var(--ink)}
.note code{font-family:var(--mono);font-size:12.5px;color:var(--cyan);background:var(--panel2);padding:1px 6px;border-radius:5px}

footer{margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--muted);font-size:12.5px;line-height:1.7}
footer b{color:var(--ink);font-weight:600}
footer a{color:var(--cyan);text-decoration:none}
footer a:hover{text-decoration:underline}
footer .hub img{vertical-align:-3px}

/* "things to notice" cards + hover-to-explain popovers (family pattern) */
.notice{margin-top:40px;border-top:1px solid var(--line);padding-top:24px}
.notice-title{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:1.6px;color:var(--muted);margin:0 0 14px;font-weight:600}
.notice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:760px){.notice-grid{grid-template-columns:1fr}}
.ncard{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:15px 16px}
.ncard h3{margin:0 0 7px;font-size:14px;font-weight:600;color:var(--ink)}
.ncard p{margin:0 0 11px;color:var(--muted);font-size:12.5px;line-height:1.5}
.x{color:var(--cyan);border-bottom:1px dotted currentColor;cursor:help;white-space:nowrap;font-size:12.5px;font-weight:600}
.x::after{content:'\24D8';font-size:.7em;vertical-align:.35em;margin-left:2px;opacity:.7}
.x:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:2px}
.explain{display:none}
#pop{position:fixed;z-index:60;max-width:300px;background:#0c1124;border:1px solid var(--line);
  border-radius:12px;padding:13px 15px;box-shadow:0 22px 55px -16px #000,0 0 0 1px #000;color:var(--ink);
  font-size:13px;line-height:1.55;visibility:hidden;opacity:0;transform:translateY(4px);
  pointer-events:none;transition:opacity .13s,transform .13s}
#pop.show{visibility:visible;opacity:1;transform:none;pointer-events:auto}
#pop h4{margin:0 0 7px;font-size:13.5px;color:var(--cyan)}
#pop p{margin:0 0 8px}#pop p:last-child{margin:0}
#pop b{color:var(--ink);font-weight:600}

/* reduced motion: drop transitions and animations site-wide */
@media (prefers-reduced-motion: reduce){*,*::before,*::after{transition:none!important;animation:none!important;scroll-behavior:auto!important}}