:root{color-scheme:dark;--bg:#0b1020;--panel:#121933;--text:#e6ecff;--muted:#9ba7cf;--accent:#8b5cf6;--accent-2:#22d3ee;--border:#233057}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}.shell{min-height:100vh;display:grid;grid-template-columns:240px 1fr}.sidebar{border-right:1px solid var(--border);background:linear-gradient(180deg,#121933,#0f1730);padding:20px 16px}.brand{font-weight:700;margin-bottom:20px;letter-spacing:.2px}.nav{display:flex;flex-direction:column;gap:8px}.nav a{padding:10px 12px;border-radius:10px;color:var(--muted);border:1px solid transparent}.nav a.active,.nav a:hover{color:var(--text);background:rgba(139,92,246,.12);border-color:rgba(139,92,246,.4)}.main{padding:24px}.page-title{font-size:28px;font-weight:700;margin:0 0 10px}.page-subtitle{margin:0;color:var(--muted)}.cards{margin-top:20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:12px;gap:12px}.card{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:14px}.card h3{margin:0 0 6px;font-size:14px;color:var(--muted)}.card p{margin:0;font-size:20px;font-weight:600}@media (max-width:900px){.shell{grid-template-columns:1fr}.sidebar{border-right:0;border-bottom:1px solid var(--border)}}