:root{--bg: #0b0f14;--card: #121821;--text: #e6f0f2;--muted: #9fb1b6;--accent: #28A7AC;--accent-2: #36ABAD}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,"Apple Color Emoji","Segoe UI Emoji";background:var(--bg);color:var(--text)}.container{max-width:900px;margin:0 auto;padding:40px 20px}header,footer{-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}h1,h2,h3{color:var(--text)}p,li{color:var(--muted);line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}.links{display:flex;gap:16px;margin-top:12px}.card{background:linear-gradient(180deg,#28a7ac0f,#36abad08),var(--card);border:1px solid rgba(54,171,173,.25);border-radius:14px;padding:24px}.meta{font-size:14px;color:var(--muted)}.section{margin:28px 0}.toc{padding-left:18px}.toc li{margin:6px 0}