:root {
  color-scheme: dark;
  --background: #03101c;
  --surface: #081c2b;
  --surface-soft: #0d2636;
  --border: #234252;
  --text: #f3f6f8;
  --muted: #a9b7c2;
  --brand: #25c2d2;
  --brand-soft: #8ce5ed;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(
      circle at 85% 0%,
      rgba(37, 194, 210, 0.15),
      transparent 32rem
    ),
    linear-gradient(180deg, #031522 0%, var(--background) 45%);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.62;
}

a {
  color: var(--brand-soft);
}
a:hover,
a:focus-visible {
  color: #ffffff;
}

.shell {
  width: min(860px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 42px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--text);
  text-decoration: none;
  font-size: 1.2rem;
  font-weight: 750;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
nav a {
  color: var(--muted);
  font-size: 0.92rem;
  text-decoration: none;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--brand);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2 {
  font-family: Georgia, "Times New Roman", serif;
}
h1 {
  margin: 0;
  max-width: 720px;
  font-size: clamp(2.35rem, 7vw, 4rem);
  line-height: 1.04;
}
h2 {
  margin: 0 0 12px;
  font-size: 1.55rem;
}
p,
li {
  color: var(--muted);
}
.lead {
  max-width: 720px;
  margin: 20px 0 10px;
  font-size: 1.08rem;
}
.updated {
  margin: 6px 0 0;
  color: #78909f;
  font-size: 0.88rem;
}

.content {
  margin-top: 42px;
  display: grid;
  gap: 14px;
}
.card {
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid var(--border);
  border-radius: 18px;
  background: rgba(8, 28, 43, 0.88);
  box-shadow: 0 16px 50px rgba(0, 0, 0, 0.18);
}
.card p:first-of-type {
  margin-top: 0;
}
.card p:last-child,
.card ul:last-child {
  margin-bottom: 0;
}
ul {
  padding-left: 22px;
}
li + li {
  margin-top: 7px;
}

.contact {
  display: inline-flex;
  margin-top: 10px;
  padding: 12px 18px;
  border-radius: 999px;
  color: #031018;
  background: var(--brand);
  font-weight: 800;
  text-decoration: none;
}

.notice {
  border-left: 3px solid var(--brand);
  padding-left: 16px;
}

footer {
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  color: #718694;
  font-size: 0.86rem;
}

@media (max-width: 620px) {
  .shell {
    width: min(100% - 24px, 860px);
    padding-top: 18px;
  }
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 34px;
  }
  nav {
    gap: 13px;
  }
}