:root{
  --ink:#0B1220;--panel:#152439;--surface:#0E1A2B;--cool:#2CD4C0;--cool-deep:#12A594;
  --white:#EAF2F6;--muted:rgba(234,242,246,.74);--line:rgba(255,255,255,.1);
  --disp:'Space Grotesk',sans-serif;--body:'Inter',sans-serif;--mono:'JetBrains Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--body);background:radial-gradient(1000px 600px at 75% -10%,#1a3350 0,transparent 60%),var(--ink);color:var(--white);line-height:1.7;-webkit-font-smoothing:antialiased;min-height:100vh}
.wrap{max-width:760px;margin:0 auto;padding:0 24px}
header{padding:20px 0;border-bottom:1px solid var(--line);position:sticky;top:0;background:rgba(11,18,32,.85);backdrop-filter:blur(10px);z-index:10}
header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo img{height:32px;display:block}
a.back{font-family:var(--mono);font-size:.8rem;color:var(--muted);text-decoration:none;white-space:nowrap}
a.back:hover{color:var(--cool)}
main{padding:44px 0 72px}
.eyebrow{font-family:var(--mono);font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:var(--cool-deep)}
h1{font-family:var(--disp);font-size:clamp(1.8rem,4vw,2.4rem);letter-spacing:-.02em;margin:10px 0 8px;color:#fff}
.updated{font-family:var(--mono);font-size:.78rem;color:var(--muted);margin-bottom:34px}
h2{font-family:var(--disp);font-size:1.22rem;margin:34px 0 12px;color:#fff}
h3{font-family:var(--disp);font-size:1rem;margin:20px 0 8px;color:var(--white)}
p,li{color:var(--muted);margin-bottom:12px}
ul,ol{padding-left:22px;margin-bottom:12px}
li{margin-bottom:7px}
a{color:var(--cool);text-decoration:underline}
strong{color:var(--white);font-weight:600}
.card{background:linear-gradient(160deg,var(--panel),var(--surface));border:1px solid rgba(44,212,192,.2);border-radius:14px;padding:16px 20px;margin:18px 0}
.card p:last-child{margin-bottom:0}
.ph{font-family:var(--mono);font-size:.85em;color:var(--cool);background:rgba(44,212,192,.12);border:1px solid rgba(44,212,192,.3);border-radius:6px;padding:1px 7px}
.note{margin-top:44px;padding:16px 18px;border:1px dashed var(--line);border-radius:12px;font-size:.84rem;color:rgba(234,242,246,.55)}
.tocback{margin-top:30px}
.tocback a{font-family:var(--disp);font-weight:600;text-decoration:none;color:var(--cool)}
footer{border-top:1px solid var(--line);padding:24px 0;font-size:.8rem;color:rgba(234,242,246,.45)}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
footer a{color:rgba(234,242,246,.6);text-decoration:none}
footer a:hover{color:var(--cool)}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto}}