:root {
   --bg: #0b1220;
   --card: rgba(255, 255, 255, 0.06);
   --border: rgba(255, 255, 255, 0.12);
   --text: rgba(255, 255, 255, 0.92);
   --muted: rgba(255, 255, 255, 0.72);
   --muted2: rgba(255, 255, 255, 0.62);
   --primary: #2563eb;
   --primary2: #60a5fa;
   --ok: #22c55e;
   --warn: #f59e0b;
   --danger: #ef4444;
   --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
   --radius: 16px;
   --radius2: 22px;
   --max: 980px;
 }
 
 * { box-sizing: border-box; }
 html, body { 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: radial-gradient(1200px 800px at 15% 10%, rgba(37, 99, 235, 0.35), transparent 55%),
               radial-gradient(1000px 800px at 80% 15%, rgba(96, 165, 250, 0.22), transparent 55%),
               radial-gradient(900px 700px at 40% 80%, rgba(34, 197, 94, 0.16), transparent 55%),
               var(--bg);
   color: var(--text);
   line-height: 1.6;
 }
 
 a { color: var(--primary2); text-decoration: none; }
 a:hover { text-decoration: underline; }
 
 .topbar {
   position: sticky;
   top: 0;
   z-index: 10;
   backdrop-filter: blur(10px);
   background: rgba(11, 18, 32, 0.7);
   border-bottom: 1px solid var(--border);
 }
 
 .topbar-inner {
   max-width: var(--max);
   margin: 0 auto;
   padding: 14px 18px;
   display: flex;
   align-items: center;
   justify-content: space-between;
   gap: 12px;
 }
 
 .brand {
   display: flex;
   align-items: center;
   gap: 12px;
   font-weight: 900;
   letter-spacing: -0.2px;
 }
 
 .logo {
   width: 34px;
   height: 34px;
   border-radius: 12px;
   background: linear-gradient(135deg, var(--primary) 0%, #7c3aed 55%, #06b6d4 100%);
   box-shadow: 0 8px 18px rgba(37, 99, 235, 0.32);
 }
 
 .nav {
   display: flex;
   gap: 10px;
   flex-wrap: wrap;
   align-items: center;
   justify-content: flex-end;
 }
 
 .nav a {
   font-size: 13px;
   font-weight: 800;
   color: var(--text);
   padding: 8px 10px;
   border: 1px solid transparent;
   border-radius: 12px;
   opacity: 0.92;
 }
 
 .nav a:hover {
   border-color: var(--border);
   background: rgba(255, 255, 255, 0.04);
   text-decoration: none;
 }
 
 .container {
   max-width: var(--max);
   margin: 0 auto;
   padding: 28px 18px 54px;
 }
 
 .hero {
   padding: 22px 0 14px;
 }
 
 .kicker {
   font-size: 12px;
   letter-spacing: 0.14em;
   text-transform: uppercase;
   color: var(--muted2);
   font-weight: 900;
 }
 
 h1 {
   margin: 10px 0 8px;
   font-size: clamp(26px, 4vw, 42px);
   letter-spacing: -0.6px;
   line-height: 1.12;
 }
 
 .subtitle {
   margin: 0;
   color: var(--muted);
   font-weight: 600;
   max-width: 72ch;
 }
 
 .meta {
   margin-top: 14px;
   display: flex;
   flex-wrap: wrap;
   gap: 10px;
 }
 
 .pill {
   display: inline-flex;
   align-items: center;
   gap: 8px;
   padding: 8px 10px;
   border-radius: 999px;
   background: rgba(255, 255, 255, 0.05);
   border: 1px solid var(--border);
   font-size: 12px;
   color: var(--muted);
   font-weight: 700;
 }
 
 .card {
   margin-top: 18px;
   padding: 20px;
   border-radius: var(--radius2);
   background: var(--card);
   border: 1px solid var(--border);
   box-shadow: var(--shadow);
 }
 
 .card h2 {
   margin: 0 0 10px;
   font-size: 18px;
   letter-spacing: -0.25px;
 }
 
 .card h3 {
   margin: 18px 0 8px;
   font-size: 15px;
   letter-spacing: -0.15px;
 }
 
 .card p { margin: 0 0 10px; color: var(--muted); }
 
 ul {
   margin: 0 0 12px;
   padding-left: 18px;
   color: var(--muted);
 }
 
 li { margin: 6px 0; }
 
 .note {
   border-left: 3px solid rgba(96, 165, 250, 0.75);
   padding: 10px 12px;
   border-radius: 12px;
   background: rgba(37, 99, 235, 0.10);
   border: 1px solid rgba(37, 99, 235, 0.18);
   color: var(--muted);
 }
 
 .note strong { color: var(--text); }
 
 .footer {
   margin-top: 28px;
   padding-top: 18px;
   border-top: 1px solid var(--border);
   color: var(--muted2);
   font-size: 12px;
 }
 
 .footer a { color: var(--primary2); }
 
 @media (prefers-color-scheme: light) {
   :root {
     --bg: #f6f7fb;
     --card: rgba(255, 255, 255, 0.9);
     --border: rgba(2, 6, 23, 0.10);
     --text: rgba(2, 6, 23, 0.92);
     --muted: rgba(2, 6, 23, 0.72);
     --muted2: rgba(2, 6, 23, 0.62);
     --shadow: 0 10px 28px rgba(2, 6, 23, 0.12);
   }
   body {
     background: radial-gradient(1200px 800px at 15% 10%, rgba(37, 99, 235, 0.16), transparent 55%),
                 radial-gradient(1000px 800px at 80% 15%, rgba(96, 165, 250, 0.10), transparent 55%),
                 radial-gradient(900px 700px at 40% 80%, rgba(34, 197, 94, 0.10), transparent 55%),
                 var(--bg);
   }
   .topbar { background: rgba(246, 247, 251, 0.7); }
   .nav a { color: var(--text); }
 }