:root{--bg: #050b14;--bg-soft: #091424;--panel: rgba(12, 25, 43, .86);--panel-hover: rgba(16, 34, 57, .96);--text: #eef5ff;--muted: #9fb3cf;--accent: #72d6ff;--accent-two: #8d83ff;--line: rgba(255, 255, 255, .09);--max-width: 1240px;--radius: 24px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-height:100vh;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:radial-gradient(circle at 12% 14%,rgba(114,214,255,.11),transparent 25%),radial-gradient(circle at 82% 18%,rgba(141,131,255,.12),transparent 27%),linear-gradient(180deg,#07111f 0%,var(--bg) 100%)}a{color:inherit}.container{width:min(calc(100% - 2rem),var(--max-width));margin-inline:auto}.site-header{position:sticky;top:0;z-index:20;border-bottom:1px solid var(--line);background:#050b14d6;backdrop-filter:blur(16px)}.nav-wrap{min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:2rem}.brand{display:flex;flex-direction:column;text-decoration:none}.brand 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var(--line);border-radius:18px;background:var(--panel)}footer{padding:3rem 0;border-top:1px solid var(--line)}footer p{margin:.3rem 0}.muted{color:var(--muted)}@media(max-width:900px){.nav-wrap{align-items:flex-start;flex-direction:column;padding:1rem 0}.card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:620px){nav{gap:.7rem}.card-grid{grid-template-columns:1fr}.hero{padding-top:4.5rem}}.card-top{display:flex;align-items:center;justify-content:space-between;gap:1rem;margin-bottom:1.5rem}.topic-reference{width:58px;height:58px;display:grid;place-items:center;flex:0 0 auto;border-radius:50%;color:var(--text);font-size:.86rem;font-weight:800;letter-spacing:.08em;background:radial-gradient(circle at 35% 30%,rgba(255,255,255,.18),transparent 36%),linear-gradient(135deg,#72d6ff3d,#8d83ff38);border:1px solid rgba(114,214,255,.34);box-shadow:inset 0 0 18px #72d6ff14,0 10px 28px #00000038}.topic-type{padding:.42rem 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