:root{--bg:#f6f7fb;--card:#fff;--text:#1f2937;--muted:#6b7280;--primary:#2563eb;--danger:#dc2626;--ok:#16a34a;--border:#e5e7eb;--side:#111827}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--primary);text-decoration:none}.layout{display:flex;min-height:100vh}.sidebar{width:260px;background:var(--side);color:#fff;padding:20px 14px;position:sticky;top:0;height:100vh}.brand{font-size:20px;font-weight:700;margin:0 0 18px 8px}.nav a{display:block;color:#d1d5db;padding:10px 12px;border-radius:10px;margin-bottom:4px}.nav a:hover,.nav a.active{background:#1f2937;color:#fff}.main{flex:1;padding:24px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;margin-bottom:16px;box-shadow:0 1px 2px rgba(0,0,0,.03)}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.stat{font-size:28px;font-weight:800}.muted{color:var(--muted)}.table{width:100%;border-collapse:collapse}.table th,.table td{border-bottom:1px solid var(--border);padding:10px 8px;text-align:left;vertical-align:top}.table th{font-size:13px;color:var(--muted);font-weight:600;background:#fafafa}.btn{display:inline-block;border:0;border-radius:10px;padding:9px 12px;background:var(--primary);color:#fff;cursor:pointer;font-weight:600}.btn.secondary{background:#374151}.btn.danger{background:var(--danger)}.btn.ok{background:var(--ok)}.btn.light{background:#e5e7eb;color:#111827}.btn.small{padding:6px 9px;font-size:13px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}.field{margin-bottom:12px}.field label{display:block;font-size:13px;color:var(--muted);margin-bottom:5px}input,select,textarea{width:100%;border:1px solid var(--border);border-radius:10px;padding:10px 11px;font:inherit;background:#fff}textarea{min-height:90px}.flash{padding:12px 14px;border-radius:12px;margin-bottom:12px}.flash.success{background:#dcfce7;color:#14532d}.flash.error{background:#fee2e2;color:#7f1d1d}.flash.info{background:#dbeafe;color:#1e3a8a}.badge{display:inline-block;border-radius:999px;padding:3px 8px;font-size:12px;font-weight:700;background:#e5e7eb}.badge.ok{background:#dcfce7;color:#166534}.badge.warn{background:#fef3c7;color:#92400e}.badge.danger{background:#fee2e2;color:#991b1b}.login-wrap{max-width:420px;margin:80px auto}.qr{max-width:260px;border:1px solid var(--border);border-radius:16px;padding:8px;background:#fff}.actions{display:flex;gap:8px;flex-wrap:wrap}.two{display:grid;grid-template-columns:1fr 1fr;gap:16px}.three{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}.code{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;background:#f3f4f6;border:1px solid var(--border);padding:8px;border-radius:10px;word-break:break-all}.help{font-size:13px;color:var(--muted)}@media(max-width:900px){.layout{display:block}.sidebar{width:auto;height:auto;position:relative}.grid,.two,.three,.form-row{grid-template-columns:1fr}.main{padding:16px}}
.sidebar .developer{position:absolute;left:22px;right:18px;bottom:18px;font-size:12px;color:#9ca3af}.sidebar .developer a{color:#c7d2fe}.developer{font-size:12px;color:var(--muted);margin-top:18px}.developer.center{text-align:center}.login-wrap.wide{max-width:620px}.hero-card{background:linear-gradient(135deg,#ffffff,#eef2ff)}.calc-box{border:1px dashed var(--border);background:#f8fafc;border-radius:14px;padding:12px;margin:10px 0;display:grid;grid-template-columns:1fr 1fr;gap:8px;align-items:center}.public-page{background:radial-gradient(circle at top left,#ecfdf5,#f8fafc 38%,#eef2ff);min-height:100vh}.public-shell{max-width:980px;margin:0 auto;padding:42px 16px}.public-card{background:rgba(255,255,255,.92);border:1px solid var(--border);border-radius:24px;padding:24px;box-shadow:0 14px 40px rgba(15,23,42,.08)}.public-card.hero{text-align:center;padding:44px 28px}.public-card h1{font-size:42px;line-height:1.08;margin:12px 0}.lead{font-size:18px;color:#4b5563;max-width:720px;margin:0 auto 24px}.pill{display:inline-block;border-radius:999px;background:#dcfce7;color:#166534;font-weight:800;padding:6px 12px}.public-actions{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}.public-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:16px}.public-grid h3{margin-top:0}.card .stat + p{margin-top:8px}@media(max-width:900px){.sidebar .developer{position:static;margin:14px 8px}.calc-box,.public-grid{grid-template-columns:1fr}.public-card h1{font-size:32px}.public-card.hero{padding:28px 20px}}