:root {
  --ink: #0e141a;
  --muted: #5a646f;
  --ocean: #0c3b57;
  --reef: #1f7a8c;
  --sand: #f5efe5;
  --card: #ffffff;
  --ring: rgba(12, 59, 87, 0.15);
  --shadow: 0 18px 44px rgba(14, 20, 26, 0.12);
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Space Grotesk", "IBM Plex Sans", "Sora", "Manrope", system-ui, -apple-system, sans-serif;
  color: var(--ink);
  background: radial-gradient(1200px 800px at 12% -10%, #f9f3e6 0%, #f6f2e9 35%, #eef4f7 70%, #e8f0f4 100%);
}
main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 40px 20px 80px;
}
.topline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(14, 20, 26, 0.12);
}
.header-home {
  display: inline-flex;
  align-items: center;
}
.header-logo {
  width: 120px;
  height: auto;
  display: block;
}
.header-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  flex-wrap: wrap;
}
.topline a {
  color: var(--ocean);
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
}
.lang-select {
  border: 1px solid rgba(12, 59, 87, 0.2);
  background: #fff;
  color: var(--ocean);
  border-radius: 999px;
  padding: 6px 10px;
  font: inherit;
  font-weight: 700;
}
.topline a:hover { text-decoration: underline; }
.hero,
.section,
.card,
.callout {
  background: var(--card);
  border: 1px solid rgba(14, 20, 26, 0.08);
  border-radius: 20px;
  box-shadow: var(--shadow);
}
.hero {
  padding: 28px;
  margin-bottom: 24px;
}
h1 {
  margin: 0 0 12px;
  font-size: clamp(30px, 4vw, 44px);
  line-height: 1.05;
  letter-spacing: -0.02em;
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: 18px;
  max-width: 720px;
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.card {
  padding: 20px;
}
.card h3,
.section h2,
.callout h2 {
  margin-top: 0;
}
.section,
.callout {
  padding: 24px;
  margin-top: 18px;
}
.section p,
.section li,
.callout p,
.callout li,
.card p {
  color: var(--muted);
  line-height: 1.6;
}
ul, ol {
  margin: 12px 0 0;
  padding-left: 20px;
}
code {
  font-family: "IBM Plex Mono", "SFMono-Regular", ui-monospace, monospace;
  font-size: 0.95em;
  background: #f4f7f9;
  padding: 2px 6px;
  border-radius: 8px;
}
.doc-list {
  display: grid;
  gap: 14px;
}
.doc-link {
  display: block;
  padding: 18px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(14, 20, 26, 0.08);
  color: inherit;
  text-decoration: none;
  box-shadow: var(--shadow);
}
.doc-link strong {
  display: block;
  color: var(--ocean);
  margin-bottom: 6px;
}
.doc-link span {
  color: var(--muted);
  line-height: 1.5;
}
.footer,
footer {
  margin-top: 18px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 10px;
}
.footer-links a {
  color: var(--ocean);
  text-decoration: none;
  font-weight: 700;
}
.footer-links a:hover {
  text-decoration: underline;
}