:root{--bg: #f5f6f8;--surface: #ffffff;--border: #e2e5ea;--text: #1c2128;--muted: #6b7280;--brand: #2563eb;--brand-dark: #1d4ed8;--danger: #dc2626;--ok: #16a34a;--warn: #d97706;--radius: 10px}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1040px;margin:0 auto;padding:24px 20px 64px}.narrow{max-width:460px}.nav{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.nav-inner{max-width:1040px;margin:0 auto;padding:12px 20px;display:flex;align-items:center;gap:18px}.brand{font-weight:700;font-size:18px;color:var(--text)}.brand span{color:var(--brand)}.nav a{color:var(--muted);font-weight:500;font-size:14px}.nav a.active,.nav a:hover{color:var(--text);text-decoration:none}.nav .spacer{flex:1}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;margin-bottom:16px}.card h2{margin:0 0 4px;font-size:17px}.card h3{margin:0 0 12px;font-size:15px}h1{font-size:24px;margin:0 0 16px}.muted{color:var(--muted)}.small{font-size:13px}.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}.grid{display:grid;gap:16px}.grid.cols-2{grid-template-columns:1fr 1fr}@media(max-width:640px){.grid.cols-2{grid-template-columns:1fr}}label{display:block;font-size:13px;font-weight:600;margin-bottom:4px}.field{margin-bottom:14px}.input,select,textarea{width:100%;padding:9px 11px;border:1px solid var(--border);border-radius:8px;font-size:14px;font-family:inherit;background:#fff}.input:focus,select:focus{outline:2px solid var(--brand);outline-offset:-1px}.btn{display:inline-block;padding:9px 16px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);font-size:14px;font-weight:600;cursor:pointer;font-family:inherit}.btn:hover{background:#f3f4f6;text-decoration:none}.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn.primary:hover{background:var(--brand-dark)}.btn.danger{background:#fff;border-color:var(--danger);color:var(--danger)}.btn.danger:hover{background:#fef2f2}.btn:disabled{opacity:.55;cursor:not-allowed}.btn.sm{padding:5px 10px;font-size:13px}.table{width:100%;border-collapse:collapse;font-size:14px}.table th,.table td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--border)}.table th{font-size:12px;text-transform:uppercase;color:var(--muted);letter-spacing:.03em}.table tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:2px 9px;border-radius:999px;font-size:12px;font-weight:600;background:#eef0f3;color:var(--muted)}.badge.ok{background:#dcfce7;color:#15803d}.badge.warn{background:#fef3c7;color:#b45309}.badge.err{background:#fee2e2;color:#b91c1c}.badge.info{background:#dbeafe;color:#1d4ed8}.alert{padding:11px 14px;border-radius:8px;font-size:14px;margin-bottom:16px}.alert.error{background:#fee2e2;color:#991b1b}.alert.warn{background:#fef3c7;color:#92400e}.alert.success{background:#dcfce7;color:#166534}.alert.info{background:#dbeafe;color:#1e40af}.center{text-align:center}.mt{margin-top:16px}.spread{display:flex;justify-content:space-between;align-items:center;gap:12px}.price{font-size:20px;font-weight:700}.hero{padding:48px 0 24px;text-align:center}.hero h1{font-size:34px}.loading{padding:48px;text-align:center;color:var(--muted)}code{background:#eef0f3;padding:1px 5px;border-radius:4px;font-size:13px}