@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
  --bg: #f3f6fb;
  --bg-accent: #e7eef9;
  --card: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --brand-soft: #eff6ff;
  --shadow: 0 10px 30px rgba(15, 23, 42, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: 'Plus Jakarta Sans', system-ui, sans-serif;
  color: var(--text);
  line-height: 1.65;
  background:
    radial-gradient(900px 420px at 10% -10%, #dbeafe 0%, transparent 55%),
    radial-gradient(700px 380px at 100% 0%, #e0e7ff 0%, transparent 50%),
    var(--bg);
}

.top {
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
  color: #fff;
  padding: 20px 0;
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.25);
}

.brand {
  margin: 0;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.brand a {
  color: inherit;
  text-decoration: none;
}

.wrap {
  width: min(760px, calc(100% - 32px));
  margin: 0 auto;
}

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 32px 28px;
  margin: 28px auto 18px;
  box-shadow: var(--shadow);
}

h1 {
  margin: 0 0 10px;
  font-size: 1.85rem;
  letter-spacing: -0.03em;
  color: var(--text);
}

h2 {
  margin: 30px 0 10px;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

p,
li {
  color: var(--muted);
}

.lead {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 1rem;
}

.meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 22px;
  padding: 14px 16px;
  background: var(--brand-soft);
  border: 1px solid #dbeafe;
  border-radius: 12px;
}

.meta strong,
.meta code {
  color: var(--text);
}

code {
  font-size: 0.88em;
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 6px;
}

.links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}

.links li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: #f8fafc;
  text-decoration: none;
  color: var(--text);
  font-weight: 600;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.15s ease;
}

.links li a:hover {
  border-color: #bfdbfe;
  background: var(--brand-soft);
  transform: translateY(-1px);
}

.links li a span {
  color: var(--brand);
  font-size: 1.1rem;
}

a {
  color: var(--brand);
  font-weight: 600;
}

a:hover {
  color: var(--brand-dark);
}

.foot {
  padding: 4px 0 36px;
  color: var(--muted);
  font-size: 0.88rem;
}

.foot a {
  text-decoration: none;
  margin-right: 12px;
}

.nav {
  margin: 0 0 18px;
}

.nav a {
  text-decoration: none;
  font-size: 0.92rem;
}

@media (max-width: 560px) {
  .card {
    padding: 24px 18px;
    margin-top: 20px;
  }

  h1 {
    font-size: 1.55rem;
  }
}