:root{--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{color:#e2e8f0;background:#0f172a;margin:0}h1{margin-bottom:.5rem;font-size:1.6rem}p{color:#cbd5e1;line-height:1.5}a{color:#60a5fa}.app-shell{flex-direction:column;min-height:100vh;display:flex}.top-bar{border-bottom:1px solid #1e293b;justify-content:space-between;align-items:center;padding:1rem 1.5rem;display:flex}.brand{color:#f8fafc;font-size:1.1rem;font-weight:700}.top-bar nav{gap:1.25rem;display:flex}.top-bar nav a{color:#94a3b8;font-size:.95rem;text-decoration:none}.top-bar nav a.active{color:#f8fafc;font-weight:600}.page-content{box-sizing:border-box;flex:1;width:100%;max-width:640px;margin:0 auto;padding:2rem 1.5rem}