:root {
  color-scheme: dark;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #020403;
  color: #f4f7f4;
}

* {
  box-sizing: border-box;
}

html {
  background: #020403;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 50% -10%, rgba(57, 255, 20, 0.12), transparent 34rem),
    #020403;
  color: #f4f7f4;
}

a {
  color: inherit;
}

.shell {
  width: min(100% - 32px, 920px);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(2, 4, 3, 0.86);
  backdrop-filter: blur(18px);
}

.site-header .shell {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.18em;
  text-decoration: none;
}

.brand span,
.eyebrow,
.link {
  color: #39ff14;
}

.back-link {
  color: #a3aca3;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover,
.link:hover {
  color: #8fff75;
}

main {
  padding: 72px 0 96px;
}

.hero {
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.eyebrow {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1 {
  max-width: 780px;
  margin: 18px 0 0;
  font-size: clamp(34px, 8vw, 64px);
  line-height: 1.08;
  letter-spacing: -0.045em;
}

.lead {
  max-width: 720px;
  margin: 22px 0 0;
  color: #aab3aa;
  font-size: 16px;
  font-weight: 650;
  line-height: 1.9;
}

.updated {
  margin-top: 18px;
  color: #697269;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
}

.notice,
.contact-card {
  margin-top: 28px;
  border: 1px solid rgba(57, 255, 20, 0.28);
  border-radius: 22px;
  background: linear-gradient(145deg, rgba(57, 255, 20, 0.08), rgba(255, 255, 255, 0.025));
  padding: 22px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
}

.notice strong {
  display: block;
  color: #8fff75;
  font-size: 15px;
}

.notice p,
.contact-card p {
  margin: 10px 0 0;
  color: #c4ccc4;
  line-height: 1.8;
}

.content {
  display: grid;
  gap: 18px;
  padding-top: 32px;
}

.section-card {
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.026);
  padding: 22px;
}

.section-card h2 {
  margin: 0;
  font-size: 19px;
  letter-spacing: -0.02em;
}

.section-card p,
.section-card li,
.section-card dd {
  color: #abb4ab;
  font-size: 14px;
  font-weight: 560;
  line-height: 1.9;
}

.section-card p:last-child,
.section-card ul:last-child,
.section-card dl:last-child {
  margin-bottom: 0;
}

.section-card ul {
  margin: 14px 0 0;
  padding-left: 1.25rem;
}

.section-card dt {
  margin-top: 16px;
  color: #f4f7f4;
  font-size: 14px;
  font-weight: 850;
}

.section-card dd {
  margin: 6px 0 0;
}

.contact-card a {
  display: inline-block;
  max-width: 100%;
  margin-top: 16px;
  overflow-wrap: anywhere;
  color: #53b6ff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: clamp(13px, 4vw, 18px);
  font-weight: 900;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.button {
  display: inline-flex;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(57, 255, 20, 0.42);
  border-radius: 14px;
  padding: 0 16px;
  background: rgba(57, 255, 20, 0.1);
  color: #8fff75;
  font-size: 13px;
  font-weight: 900;
  text-decoration: none;
}

.button.secondary {
  border-color: rgba(83, 182, 255, 0.35);
  background: rgba(83, 182, 255, 0.08);
  color: #7fc8ff;
}

footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 28px 0;
  color: #697269;
  font-size: 12px;
}

footer .shell {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}

@media (min-width: 720px) {
  main {
    padding-top: 104px;
  }

  .notice,
  .contact-card,
  .section-card {
    padding: 30px;
  }
}