:root{--bg: #0D1117;--surface: #161B22;--primary: #7C3AED;--secondary: #22D3EE;--accent: #FF8A3D;--success: #3FB950;--text: #E6EDF3;--muted: #8B949E;--border: #21262D;--title-font: "Space Grotesk", system-ui, sans-serif;--body-font: "Inter", system-ui, sans-serif;--mono-font: "JetBrains Mono", ui-monospace, monospace;--maxw: 760px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:var(--body-font);font-size:18px;line-height:1.7;-webkit-font-smoothing:antialiased}a{color:var(--secondary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}.site-header{border-bottom:1px solid var(--border);background:#0d1117d9;backdrop-filter:blur(8px);position:sticky;top:0;z-index:10}.site-header .container{display:flex;align-items:center;justify-content:space-between;height:64px}.brand{font-family:var(--title-font);font-weight:800;font-size:20px;color:var(--text)}.brand .amp{background:linear-gradient(90deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}.brand:hover{text-decoration:none}.nav a{color:var(--muted);font-size:15px;margin-left:20px}.site-footer{border-top:1px solid var(--border);margin-top:80px;padding:32px 0;color:var(--muted);font-size:14px}.site-footer .accent{color:var(--accent)}.hero{padding:72px 0 40px}.hero h1{font-family:var(--title-font);font-size:44px;line-height:1.1;margin:0 0 16px}.hero .grad{background:linear-gradient(90deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}.hero p{color:var(--muted);font-size:20px;margin:0}.series-label{color:var(--muted);font-family:var(--title-font);font-size:13px;letter-spacing:2px;text-transform:uppercase;margin:8px 0 0}.article-list{list-style:none;padding:0;margin:16px 0 0}.card{display:flex;gap:20px;align-items:flex-start;padding:22px 24px;border:1px solid var(--border);border-radius:14px;background:var(--surface);margin-bottom:14px;transition:border-color .2s,transform .2s}.card:hover{border-color:var(--primary);transform:translateY(-2px);text-decoration:none}.card .num{font-family:var(--mono-font);font-size:30px;font-weight:700;line-height:1.1;min-width:46px;background:linear-gradient(180deg,var(--primary),var(--secondary));-webkit-background-clip:text;background-clip:text;color:transparent}.card .card-body{display:flex;flex-direction:column}.card .cat{font-family:var(--title-font);font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--secondary)}.card .h2{font-family:var(--title-font);font-size:23px;font-weight:700;margin:6px 0;color:var(--text)}.card .sub{color:var(--muted);font-size:16px}.series-pos{display:inline-block;font-family:var(--mono-font);font-size:13px;color:var(--secondary);border:1px solid var(--border);border-radius:999px;padding:3px 12px;margin-bottom:4px}.prevnext{display:flex;gap:16px;margin-top:56px;border-top:1px solid var(--border);padding-top:28px}.prevnext a{flex:1;border:1px solid var(--border);border-radius:12px;padding:16px 18px;background:var(--surface);text-decoration:none;transition:border-color .2s}.prevnext a:hover{border-color:var(--primary);text-decoration:none}.prevnext .spacer{flex:1}.prevnext .dir{display:block;font-size:12px;color:var(--secondary);letter-spacing:1px;text-transform:uppercase;margin-bottom:6px}.prevnext .t{color:var(--text);font-weight:600;font-size:15px}.prevnext .next{text-align:right}.article-header{padding:56px 0 24px;border-bottom:1px solid var(--border);margin-bottom:32px}.article-header .cat{font-family:var(--title-font);font-size:13px;letter-spacing:2px;text-transform:uppercase;color:var(--secondary)}.article-header h1{font-family:var(--title-font);font-size:40px;line-height:1.12;margin:12px 0}.article-header .subtitle{color:var(--muted);font-size:21px;margin:0 0 16px}.article-header .meta{color:var(--muted);font-size:14px}.article-header .bar{height:4px;width:80px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:4px;margin-top:20px}.prose{font-size:18px}.prose h2{font-family:var(--title-font);font-size:28px;margin:48px 0 16px}.prose h3{font-family:var(--title-font);font-size:22px;margin:36px 0 12px}.prose p,.prose li{color:#c9d1d9}.prose a{color:var(--secondary);text-decoration:underline}.prose strong{color:var(--text)}.prose blockquote{border-left:3px solid var(--primary);margin:24px 0;padding:4px 20px;color:var(--muted);background:var(--surface);border-radius:0 8px 8px 0}.prose code{font-family:var(--mono-font);font-size:15px;background:var(--surface);padding:2px 6px;border-radius:6px;border:1px solid var(--border)}.prose pre{background:#0b0f14!important;border:1px solid var(--border);border-radius:12px;padding:18px;overflow-x:auto;font-size:14.5px}.prose pre code{background:none;border:none;padding:0}.prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}.prose th,.prose td{border:1px solid var(--border);padding:10px 12px;text-align:left}.prose th{background:var(--surface);font-family:var(--title-font)}.prose img{max-width:100%;border-radius:12px}.prose hr{border:none;border-top:1px solid var(--border);margin:40px 0}.prose .mermaid{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:20px;text-align:center}.canonical-note{margin-top:48px;padding:16px 20px;border:1px dashed var(--border);border-radius:12px;color:var(--muted);font-size:14px}@media(max-width:640px){body{font-size:17px}.hero h1{font-size:34px}.article-header h1{font-size:30px}}