:root{--nb-primary: #1a3a6e;--nb-accent: #1b5e3f;--nb-bg: #f6f7f9;--nb-fg: #1c1f24;font-family:system-ui,Noto Sans TC,sans-serif}body{margin:0;background:var(--nb-bg);color:var(--nb-fg)}.nb-banner{background:#b45309;color:#fff;text-align:center;padding:.4rem;font-size:.9rem}.nb-shell{max-width:760px;margin:0 auto;padding:1.5rem}.nb-header{display:flex;justify-content:space-between;align-items:center}.nb-header h1{color:var(--nb-primary);margin:0}.nb-card{background:#fff;border-radius:12px;padding:1.25rem;box-shadow:0 1px 3px #00000014}.nb-card dt{font-weight:600;margin-top:.5rem}.nb-card dd{margin:0 0 .25rem}.nb-muted{color:#6b7280}.nb-error{color:#b91c1c}button{background:var(--nb-primary);color:#fff;border:0;border-radius:8px;padding:.4rem .8rem;cursor:pointer}