:root {
  --bg: #f7f8fc;
  --ink: #111827;
  --muted: #4b5563;
  --line: #d7dce9;
  --card: #ffffff;
  --primary: #0f766e;
  --primary-2: #155e75;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Segoe UI, Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top, #eff6ff 0%, var(--bg) 46%);
  line-height: 1.6;
}

.wrap {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.hero {
  padding: 48px 0 30px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, #ecfeff 0%, #f0f9ff 100%);
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--primary-2);
  font-weight: 700;
}

h1 {
  margin: 8px 0;
  font-size: clamp(28px, 4.3vw, 44px);
  line-height: 1.15;
}

.lead {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.top-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.top-links a {
  text-decoration: none;
  padding: 7px 12px;
  border: 1px solid #bfd2f8;
  border-radius: 999px;
  color: #1e3a8a;
  background: #eff6ff;
  font-size: 14px;
}

main {
  padding: 24px 0 36px;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  margin-bottom: 16px;
}

h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 24px;
}

h3 {
  margin-bottom: 8px;
}

p {
  margin-top: 0;
}

ul,
ol {
  margin-top: 0;
  padding-left: 22px;
}

.link-list {
  columns: 2;
}

.grid.two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.grid article {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: #fafcff;
}

pre {
  margin: 0;
  overflow: auto;
  background: #0b1220;
  color: #e6efff;
  border-radius: 10px;
  padding: 12px;
  border: 1px solid #1e293b;
}

.flow {
  border: 1px dashed #93c5fd;
  background: #eff6ff;
  padding: 10px 12px;
  border-radius: 10px;
  font-weight: 600;
}

.table-wrap {
  overflow-x: auto;
}

table {
  border-collapse: collapse;
  width: 100%;
}

th,
td {
  border: 1px solid var(--line);
  padding: 8px;
  text-align: left;
  font-size: 14px;
}

th {
  background: #f8fafc;
}

.gallery {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  overflow: hidden;
  background: #f9fafb;
}

figure img {
  display: block;
  width: 100%;
  height: auto;
}

figcaption {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 10px;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 18px 0 30px;
}

@media (max-width: 900px) {
  .link-list {
    columns: 1;
  }

  .grid.two {
    grid-template-columns: 1fr;
  }
}