:root{color-scheme:dark;--bg:#0b0d12;--card:#0f1219;--fg:#e8ecf4;--dim:#8b93a7;--line:#1d2230;--accent:#7c9cff}
*{box-sizing:border-box}html,body{margin:0;padding:0}
body{background:var(--bg);color:var(--fg);min-height:100svh;display:flex;flex-direction:column;
font:16px/1.65 ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
padding:clamp(20px,5vw,56px);-webkit-font-smoothing:antialiased}
header,main,footer{max-width:46rem;width:100%;margin-inline:auto}
.mark{display:flex;align-items:center;gap:.6rem;font-weight:650;text-decoration:none;color:inherit}
.dot{width:.65rem;height:.65rem;border-radius:50%;background:var(--accent);box-shadow:0 0 18px var(--accent)}
main{margin-top:clamp(28px,6vw,56px);flex:1}
h1{font-size:clamp(1.6rem,5vw,2.4rem);line-height:1.15;letter-spacing:-.02em;margin:0 0 1rem;font-weight:700}
h2{font-size:1.0625rem;margin:2rem 0 .5rem;font-weight:640;letter-spacing:-.01em}
p,li{color:#c9d1e0}
p{margin:.6rem 0}
ul{padding-left:1.2rem;margin:.6rem 0}
li{margin:.3rem 0}
strong{color:var(--fg)}
a{color:var(--accent)}
.note{border:1px solid var(--line);background:var(--card);border-radius:14px;padding:16px 18px;margin:1.2rem 0}
.note p{margin:.3rem 0}
code{background:#161b26;border:1px solid var(--line);border-radius:6px;padding:.1rem .35rem;font-size:.9em}
footer{margin-top:clamp(36px,7vw,64px);padding-top:20px;border-top:1px solid var(--line);
color:var(--dim);font-size:.8125rem;display:flex;flex-wrap:wrap;gap:.5rem 1.2rem;justify-content:space-between}
footer a{color:var(--dim)}