:root{--bg:#fafaf9;--surface:#fff;--border:#e5e7eb;--border-strong:#d1d5db;--text:#0f172a;--text-muted:#64748b;--text-faint:#94a3b8;--brand:#1f3864;--brand-light:#e8edf6;--brand-hover:#172a4a;--red:#dc2626;--red-bg:#fef2f2;--amber:#d97706;--amber-bg:#fffbeb;--green:#059669;--green-bg:#ecfdf5;--blue:#2563eb;--blue-bg:#eff6ff;--purple:#7c3aed;--purple-bg:#f5f3ff;--radius-sm:6px;--radius:10px;--shadow-sm:0 1px 2px rgba(15,23,42,.04);--shadow:0 2px 6px rgba(15,23,42,.06);--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI","Inter",system-ui,sans-serif;--font-mono:"SF Mono",Menlo,Monaco,Consolas,"Courier New",monospace}*{box-sizing:border-box}body,html{margin:0;padding:0;font-family:var(--font-sans);color:var(--text);background:var(--bg);font-size:15px;line-height:1.5;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button{font-family:inherit}.app-shell{display:grid;grid-template-columns:240px 1fr;min-height:100vh}.sidebar{background:var(--surface);border-right:1px solid var(--border);padding:20px 12px;position:-webkit-sticky;position:sticky;top:0;height:100vh;display:flex;flex-direction:column}.sidebar-brand{display:flex;align-items:center;gap:10px;padding:8px 12px;margin-bottom:20px}.sidebar-brand-mark{width:32px;height:32px;background:var(--brand);border-radius:8px;display:grid;place-items:center;color:#fff;font-weight:700;font-size:15px}.sidebar-brand-text{font-weight:700;font-size:15px;line-height:1.1}.sidebar-brand-text small{display:block;font-size:11px;color:var(--text-muted);font-weight:500;margin-top:2px}.sidebar-section-title{font-size:11px;font-weight:600;color:var(--text-faint);text-transform:uppercase;letter-spacing:.05em;padding:16px 12px 8px}.sidebar-link{display:flex;align-items:center;gap:10px;padding:8px 12px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer}.sidebar-link:hover{background:var(--bg)}.sidebar-link.active{background:var(--brand-light);color:var(--brand)}.main{padding:32px 40px;max-width:1400px;width:100%}h1{font-size:28px;font-weight:700;margin:0 0 8px;letter-spacing:-.01em}h2{font-size:18px;font-weight:600;margin:24px 0 12px}.page-subtitle{color:var(--text-muted);font-size:15px;margin-bottom:24px}.mono{font-family:var(--font-mono);font-size:12.5px}.form-input,.form-select{width:100%;padding:9px 12px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);font-family:inherit;font-size:13.5px;background:var(--surface);color:var(--text)}.form-input:focus,.form-select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(31,56,100,.1)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);font-size:14px;font-weight:500;color:var(--text);cursor:pointer}.btn:hover{border-color:var(--border-strong);background:var(--bg)}.btn-primary{background:var(--brand);color:#fff;border-color:var(--brand)}.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover)}