:root{--navy:#0B1220;--paper:#0A0F1C;--panel:#131C31;--ink:#EDF1F7;--muted:#A7B0C2;--accent:#3DDC97;--sky:#5B9CFF;--line:rgba(255,255,255,.11)}
*{box-sizing:border-box}
html{color-scheme:dark}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:var(--sky)}
.shell{width:min(820px,calc(100% - 40px));margin:0 auto}
header{border-bottom:1px solid var(--line);background:rgba(10,15,28,.92)}
header .shell{display:flex;justify-content:space-between;align-items:center;padding:18px 0}
.brand{color:var(--ink);text-decoration:none;font-weight:800;letter-spacing:-.02em}
.back{text-decoration:none;font-size:.9rem}
main{padding:56px 0 72px}
.eyebrow{color:var(--accent);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase}
h1{font-size:clamp(2rem,6vw,3.2rem);line-height:1.08;margin:.4rem 0 1rem}
h2{font-size:1.25rem;margin:2.2rem 0 .55rem}
p,li{color:var(--muted)}
.updated{padding:12px 14px;border:1px solid var(--line);background:var(--panel);border-radius:10px;font-size:.9rem}
.note{border-left:3px solid var(--accent);padding:12px 16px;background:rgba(61,220,151,.07);color:var(--ink)}
footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:.85rem}