:root {
  color-scheme: dark;
  --ink: #f2eee3;
  --muted: #b9b5aa;
  --line: rgba(235, 222, 190, 0.16);
  --panel: rgba(21, 28, 34, 0.88);
  --accent: #d9b866;
  --accent-soft: rgba(217, 184, 102, 0.12);
  --background: #10161d;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 20% -10%, rgba(83, 118, 131, 0.26), transparent 36rem),
    radial-gradient(circle at 95% 5%, rgba(217, 184, 102, 0.12), transparent 28rem),
    var(--background);
  font-family:
    -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "Segoe UI",
    sans-serif;
  line-height: 1.75;
}

main {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 64px 0 80px;
}

header,
section,
footer {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.2);
}

header {
  padding: 44px;
  border-radius: 24px;
}

section {
  margin-top: 18px;
  padding: 36px 44px;
  border-radius: 20px;
}

footer {
  margin-top: 18px;
  padding: 24px 32px;
  border-radius: 18px;
  color: var(--muted);
  font-size: 14px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.35;
}

h1 {
  margin: 0;
  font-size: clamp(32px, 7vw, 52px);
  letter-spacing: -0.04em;
}

h1.long-title {
  font-size: clamp(22px, 5.5vw, 52px);
  word-break: keep-all;
}

h2 {
  margin: 0 0 18px;
  font-size: 24px;
}

h3 {
  margin: 30px 0 10px;
  font-size: 17px;
}

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

p {
  margin: 10px 0;
}

ul,
ol {
  padding-left: 1.4em;
}

li + li {
  margin-top: 7px;
}

strong {
  color: var(--ink);
}

a {
  color: var(--accent);
  text-underline-offset: 3px;
}

.updated {
  margin-top: 18px;
  color: var(--muted);
  font-size: 14px;
}

.summary {
  max-width: 700px;
  margin-top: 24px;
  font-size: 17px;
}

.note {
  margin: 20px 0 0;
  padding: 16px 18px;
  border: 1px solid rgba(217, 184, 102, 0.24);
  border-radius: 12px;
  background: var(--accent-soft);
}

.language-label {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  margin-bottom: 18px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.contact {
  padding: 18px 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.025);
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
}

@media (max-width: 640px) {
  main {
    width: min(100% - 20px, 860px);
    padding: 24px 0 48px;
  }

  header,
  section {
    padding: 28px 22px;
    border-radius: 16px;
  }

  footer {
    padding: 20px 22px;
  }
}