body {
  margin: 0;
  font-family: Inter, "Segoe UI", system-ui, sans-serif;
  background: #f4f7fb;
  color: #152033;
  line-height: 1.65;
}

* {
  box-sizing: border-box;
}

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

.container {
  width: min(980px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid rgba(21, 32, 51, 0.08);
  backdrop-filter: blur(8px);
}

.header-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 18px;
  padding: 14px 0;
}

.brand {
  font-weight: 700;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  color: #40506f;
}

.nav-links a.is-current {
  color: #0c6df0;
  font-weight: 700;
}

.site-search {
  display: flex;
  gap: 10px;
  align-items: center;
}

.site-search input {
  min-height: 40px;
  min-width: min(320px, 100%);
  border: 1px solid rgba(21, 32, 51, 0.14);
  border-radius: 8px;
  background: #fff;
  padding: 0 14px;
  color: #152033;
}

.site-search button {
  min-height: 40px;
  border: 1px solid rgba(12, 109, 240, 0.2);
  border-radius: 8px;
  background: #0c6df0;
  color: #fff;
  padding: 0 16px;
  font-weight: 600;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hero {
  padding: 34px 0 10px;
}

.hero h1 {
  margin: 0 0 10px;
  line-height: 1.1;
}

.hero p {
  margin: 0;
  color: #4c5a74;
}

.content-card {
  margin: 20px 0 28px;
  padding: 22px;
  border: 1px solid rgba(21, 32, 51, 0.08);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 12px 34px rgba(18, 35, 64, 0.05);
}

.content-card h2 {
  margin-top: 0;
}

.content-card h3 {
  margin-bottom: 10px;
}

.content-card ul,
.content-card ol {
  padding-left: 20px;
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.link-card {
  padding: 16px;
  border-radius: 8px;
  background: #f7faff;
  border: 1px solid rgba(12, 109, 240, 0.12);
}

.link-card strong {
  display: block;
  margin-bottom: 8px;
}

.site-footer {
  border-top: 1px solid rgba(21, 32, 51, 0.08);
  background: #fff;
  padding: 24px 0 32px;
}

.footer-copy {
  color: #4c5a74;
}

@media (max-width: 760px) {
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .site-search {
    width: 100%;
  }

  .site-search {
    flex-direction: column;
    align-items: stretch;
  }

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