:root{color-scheme:light;--bg: #f8fafc;--surface: #ffffff;--fg: #0f172a;--muted: #6b7280;--primary: #2563eb;--border: #e5e7eb;--topbar-bg: #0f172a;--topbar-fg: #ffffff}@media(prefers-color-scheme:dark){:root{color-scheme:dark;--bg: #0b1221;--surface: #111827;--fg: #e5e7eb;--muted: #94a3b8;--primary: #60a5fa;--border: #1f2937;--topbar-bg: #0b1221;--topbar-fg: #e5e7eb}}*{box-sizing:border-box}body{margin:0;font-family:Inter,system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--fg)}a{color:inherit}button{font:inherit}.container{max-width:960px;margin:0 auto;padding:1rem}.card{border-radius:12px;border:1px solid var(--border);background:var(--surface)}@media(min-width:720px){.container{padding:1.5rem}}