:root { --bg: #0b0c0a; --surface: #141612; --ink: #eef1ea; --muted: #8a9184; --line: #242822; --accent: #c6f432; }
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.65 system-ui, "Segoe UI", Roboto, sans-serif; }
a { color: var(--accent); }
header { max-width: 760px; margin: 0 auto; padding: 32px 20px 0; display: flex; align-items: center; gap: 12px; }
header .logo { width: 40px; height: 40px; border-radius: 12px; background: var(--accent); display: grid; place-items: center; }
header b { font-size: 20px; letter-spacing: -0.02em; }
nav { margin-left: auto; display: flex; gap: 16px; font-size: 14px; }
nav a { color: var(--muted); text-decoration: none; }
nav a:hover { color: var(--ink); }
main { max-width: 760px; margin: 0 auto; padding: 24px 20px 64px; }
h1 { font-size: 34px; line-height: 1.15; letter-spacing: -0.02em; margin: 24px 0 8px; }
h2 { font-size: 19px; margin: 28px 0 6px; }
.sub { color: var(--muted); margin-top: 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 20px 22px; margin-top: 20px; }
footer { max-width: 760px; margin: 0 auto; padding: 0 20px 40px; color: var(--muted); font-size: 13px; }