:root{--bg: #0f172a;--panel: #111827;--text: #f8fafc;--muted: #94a3b8;--accent: #22c55e}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}.container{min-height:100%;display:grid;grid-template-rows:auto 1fr auto}.header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;background:var(--panel);border-bottom:1px solid #1f2937}.brand{display:flex;align-items:center;gap:10px}.brand h1{margin:0;font-size:18px;letter-spacing:.5px}.logo{width:28px;height:28px;object-fit:contain}.nav{display:flex;gap:16px}.nav a{color:var(--muted);text-decoration:none;padding:8px 10px;border-radius:6px}.nav a.router-link-exact-active,.nav a:hover{color:var(--text);background:#1f2937}.main{padding:24px;max-width:900px;margin:0 auto;width:100%}.card{background:var(--panel);border:1px solid #1f2937;border-radius:12px;padding:20px}.card h2{margin:0 0 12px;font-size:20px}.card p{color:var(--muted);line-height:1.6}.footer{padding:16px 20px;border-top:1px solid #1f2937;color:var(--muted);background:var(--panel)}