:root {
  --bg: #f7f8fa;
  --surface: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --line: #d1d5db;
  --accent: #0f766e;
  --accent-2: #115e59;
  --soft: #ecfeff;
  --max: 1100px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}
a { color: var(--accent-2); text-decoration: none; }
a:hover { text-decoration: underline; }
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
}
.nav-wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}
.brand {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
}
.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.nav a {
  color: var(--muted);
  font-size: 0.97rem;
}
.container {
  max-width: var(--max);
  margin: 0 auto;
  padding: 32px 20px 56px;
}
.hero {
  background: linear-gradient(180deg, #ffffff 0%, #f3f4f6 100%);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 46px 34px;
  margin: 12px 0 28px;
}
.kicker {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--accent);
  text-transform: uppercase;
}
.hero h1, h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  margin: 10px 0 14px;
}
.hero p.lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 820px;
}
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}
.btn {
  display: inline-block;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--text);
  font-weight: 700;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover { background: var(--accent-2); text-decoration: none; }




.grid {
  display: grid;
  gap: 18px;
}

.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (max-width: 900px) {
  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }
}




.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
}
.card h2, .card h3 { margin-top: 0; }
.section-title {
  font-size: 1.8rem;
  margin: 10px 0 14px;
}
.muted { color: var(--muted); }
.metric {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 6px;
}
.table-wrap {
  overflow-x: auto;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
}
table {
  border-collapse: collapse;
  width: 100%;
  min-width: 780px;
}
th, td {
  padding: 12px 14px;
  border-bottom: 1px solid #e5e7eb;
  text-align: left;
  vertical-align: top;
}
th {
  background: #f9fafb;
  font-size: 0.93rem;
}
tr:hover td { background: #fafafa; }
.note {
  background: var(--soft);
  border-left: 4px solid var(--accent);
  padding: 14px 16px;
  border-radius: 10px;
}
.footer {
  border-top: 1px solid var(--line);
  background: #fff;
}
.footer .container {
  padding-top: 24px;
  padding-bottom: 24px;
  font-size: 0.95rem;
  color: var(--muted);
}
.list-clean {
  margin: 0;
  padding-left: 20px;
}
.badge {
  display: inline-block;
  background: #eef2ff;
  color: #312e81;
  border: 1px solid #c7d2fe;
  font-size: 0.8rem;
  padding: 4px 8px;
  border-radius: 999px;
  margin: 0 8px 8px 0;
}
.form-group { margin-bottom: 16px; }
label {
  display: block;
  font-weight: 700;
  margin-bottom: 6px;
}
input, textarea {
  width: 100%;
  padding: 12px;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  font: inherit;
  background: #fff;
}
textarea { min-height: 180px; resize: vertical; }
.small { font-size: 0.92rem; color: var(--muted); }
@media (max-width: 900px) {
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .nav-wrap { align-items: flex-start; flex-direction: column; }
}

#index-level {
  font-size: 42px;
  font-weight: 700;
}