:root{
  --bg:#f5f7fb;
  --surface:#ffffff;
  --surface-2:#f0f4fa;
  --text:#1f2937;
  --muted:#6b7280;
  --primary:#0f62fe;
  --primary-2:#0b4ed1;
  --success:#0f9d58;
  --warning:#f59e0b;
  --danger:#dc2626;
  --border:#dbe3ef;
  --shadow:0 12px 30px rgba(16,24,40,.08);
  --radius:16px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,Segoe UI,Roboto,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.5}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-2)}
img{max-width:100%;height:auto}
.container{max-width:1180px;margin:0 auto;padding:0 1rem}
.topbar{background:#0b1220;color:#fff}
.topbar .container{display:flex;align-items:center;justify-content:space-between;padding:1rem}
.brand{font-weight:800;font-size:1.1rem;color:#fff}
.nav{display:flex;gap:1rem;flex-wrap:wrap;align-items:center}
.nav a{color:#dbe7ff;font-weight:600}
.nav a.btn{color:#fff}
.hero{padding:4rem 0;background:linear-gradient(135deg,#0b1220,#153a8a);color:#fff}
.hero h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.08;margin:0 0 1rem}
.hero p{font-size:1.08rem;max-width:760px;color:#dbe7ff}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:1.25rem}
.card-muted{background:var(--surface-2)}
.grid{display:grid;gap:1rem}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.section{padding:2rem 0}
.section-lg{padding:3rem 0}
.badge{display:inline-flex;align-items:center;padding:.22rem .55rem;border-radius:999px;background:#e9f1ff;color:var(--primary);font-size:.85rem;font-weight:700}
.badge.success{background:#e7f7ee;color:var(--success)}
.badge.warning{background:#fff5db;color:#946200}
.badge.danger{background:#fee9e7;color:var(--danger)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:none;border-radius:12px;padding:.78rem 1rem;font-weight:700;cursor:pointer;background:var(--primary);color:#fff}
.btn:hover{background:var(--primary-2);color:#fff}
.btn.secondary{background:#0b1220}
.btn.light{background:#eef3ff;color:var(--primary)}
.btn.success{background:var(--success)}
.btn.warning{background:var(--warning);color:#111827}
.btn.danger{background:var(--danger)}
.btn.ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.btn.sm{padding:.55rem .8rem;font-size:.92rem}
.btn.block{width:100%}
form .grid{margin-bottom:1rem}
label{display:block;font-weight:700;font-size:.93rem;margin-bottom:.35rem}
input,select,textarea{width:100%;padding:.78rem .9rem;border-radius:12px;border:1px solid var(--border);background:#fff;font:inherit;color:var(--text)}
textarea{min-height:140px;resize:vertical}
.help{font-size:.85rem;color:var(--muted)}
.flash{padding:.9rem 1rem;border-radius:14px;margin-bottom:1rem;border:1px solid transparent}
.flash.success{background:#ecfdf3;border-color:#bbf7d0;color:#166534}
.flash.error{background:#fef2f2;border-color:#fecaca;color:#991b1b}
.flash.info{background:#eff6ff;border-color:#bfdbfe;color:#1d4ed8}
.table-wrap{overflow:auto}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px}
th,td{padding:.8rem;border-bottom:1px solid var(--border);vertical-align:top;text-align:left}
th{font-size:.82rem;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#f8fafc}
.stat{padding:1rem;border-radius:14px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow)}
.stat .value{font-size:1.8rem;font-weight:800}
.stat .label{color:var(--muted);font-size:.92rem}
.list-clean{list-style:none;padding:0;margin:0}
.list-clean li{padding:.6rem 0;border-bottom:1px solid var(--border)}
.kicker{letter-spacing:.06em;text-transform:uppercase;color:#8db2ff;font-weight:700;font-size:.82rem}
.footer{padding:2.5rem 0;color:var(--muted)}
.footer a{color:inherit}
.stack{display:flex;flex-direction:column;gap:1rem}
.row{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.content-shell{display:grid;grid-template-columns:280px 1fr;gap:1.5rem;padding:1.5rem 0}
.sidebar{position:sticky;top:1rem;align-self:start;background:#0b1220;color:#fff;border-radius:18px;padding:1rem}
.sidebar a{display:block;padding:.7rem .8rem;border-radius:10px;color:#dbe7ff;font-weight:600}
.sidebar a:hover,.sidebar a.active{background:rgba(255,255,255,.1);color:#fff}
.app-header{padding:1rem 0}
.empty{padding:2rem;text-align:center;color:var(--muted);border:1px dashed var(--border);border-radius:16px;background:#fff}
.offer-card{display:flex;flex-direction:column;gap:.75rem;height:100%}
.offer-card h3{margin:.2rem 0;font-size:1.18rem}
.offer-meta{display:flex;flex-wrap:wrap;gap:.4rem}
.offer-meta span{background:#f3f7ff;padding:.25rem .5rem;border-radius:999px;color:#41608a;font-size:.84rem}
.hero-panel{background:rgba(255,255,255,.08);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15);border-radius:20px;padding:1.25rem}
.hero-panel .stat{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.15);color:#fff}
.hero-panel .label{color:#dbe7ff}
.tabs{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:1rem}
.tabs a{padding:.6rem .9rem;border-radius:999px;background:#eef3ff;color:var(--primary);font-weight:700}
.tabs a.active{background:var(--primary);color:#fff}
.code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;background:#0b1220;color:#e5efff;padding:.8rem 1rem;border-radius:12px;overflow:auto}
hr{border:none;border-top:1px solid var(--border);margin:1rem 0}
@media (max-width: 980px){
  .hero-grid,.content-shell,.grid-4,.grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .topbar .container{flex-direction:column;align-items:flex-start;gap:1rem}
  .sidebar{position:static}
}