:root {
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-2: #f8fafc;
  --text: #111827;
  --muted: #6b7280;
  --line: rgba(15, 23, 42, 0.08);
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --gold: #f4c84b;
  --success: #16a34a;
  --danger: #dc2626;
  --shadow: 0 12px 36px rgba(15, 23, 42, 0.08);
  --radius: 22px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{font-family:Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.45}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.app-shell{min-height:100vh;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:1000;background:#111827;color:#fff;box-shadow:0 8px 24px rgba(0,0,0,.12)}
.topbar-inner{max-width:1120px;margin:0 auto;padding:14px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.brand{color:#fff;text-decoration:none;font-size:1.15rem;font-weight:700;letter-spacing:.2px}
.topnav{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.topnav a{color:#e5e7eb;text-decoration:none;padding:10px 12px;border-radius:999px;font-size:.95rem}
.topnav a:hover,.topnav a.active{background:rgba(255,255,255,.1);color:#fff;text-decoration:none}
.container-narrow,.page{max-width:1120px;margin:0 auto;padding:20px 16px 56px}
.hero-card,.card-surface,.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}
.hero-card{padding:24px;background:linear-gradient(135deg,#111827,#1f2937 62%,#334155);color:#fff;border:none}
.hero-card h1{margin:0 0 8px;font-size:clamp(1.7rem,3vw,2.7rem)}
.hero-card p{margin:0;color:rgba(255,255,255,.82)}
.grid{display:grid;gap:18px}
.grid-2{grid-template-columns:1.25fr .75fr}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.stat{padding:18px;background:var(--surface);border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow)}
.stat-label{display:block;color:var(--muted);font-size:.9rem;margin-bottom:8px}
.stat-value{font-size:1.8rem;font-weight:700}
.section-title{margin:0 0 6px;font-size:1.3rem}
.section-subtitle{margin:0;color:var(--muted)}
.form-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.form-card .form-head{padding:22px 22px 8px}
.form-card .form-body{padding:0 22px 22px}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.form-grid .full{grid-column:1/-1}
label{display:block;font-weight:700;margin:0 0 8px}
input,textarea,select{width:100%;border:1px solid #dbe1ea;border-radius:14px;padding:13px 14px;font-size:16px;background:#fff;color:var(--text)}
input:focus,textarea:focus,select:focus{outline:none;border-color:#93c5fd;box-shadow:0 0 0 4px rgba(37,99,235,.12)}
textarea{min-height:120px;resize:vertical}
.button-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:8px}
.btn{appearance:none;border:none;border-radius:999px;padding:12px 18px;font-weight:700;cursor:pointer;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}
.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark);text-decoration:none}
.btn-secondary{background:#e5e7eb;color:#111827}.btn-secondary:hover{background:#d1d5db;text-decoration:none}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#b91c1c;text-decoration:none}
.note,.muted{color:var(--muted)}
.flash{padding:14px 16px;border-radius:16px;margin:0 0 16px;font-weight:700}
.flash-success{background:#ecfdf5;color:#166534;border:1px solid #bbf7d0}
.flash-error{background:#fef2f2;color:#991b1b;border:1px solid #fecaca}
.kv{display:grid;grid-template-columns:180px 1fr;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.kv:last-child{border-bottom:none}
.kv-label{color:var(--muted);font-weight:700}
.footer{margin-top:auto;border-top:1px solid var(--line);padding:24px 16px;background:#fff;color:var(--muted)}
.footer-inner{max-width:1120px;margin:0 auto}
.iframe-shell{position:fixed;inset:0;background:#0f172a}
.iframe-shell .bar{position:fixed;top:12px;left:12px;right:12px;z-index:10;display:flex;justify-content:space-between;gap:12px;align-items:center}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:.82rem;font-weight:700;background:#eef2ff;color:#1d4ed8}
@media (max-width: 860px){
  .grid-2,.grid-3,.form-grid{grid-template-columns:1fr}
  .kv{grid-template-columns:1fr}
  .topnav{width:100%}
  .topnav a{flex:1 1 auto;text-align:center}
  .hero-card{padding:20px}
}