html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font:
    16px/1.65 "Courier New",
    monospace;
}
a {
  color: var(--link);
  text-underline-offset: 3px;
}
button,
input,
select,
textarea {
  font: inherit;
}
button {
  cursor: pointer;
}
input,
select,
textarea {
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px;
  max-width: 100%;
}
button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}
.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: 10000;
  padding: 12px 20px;
  background: var(--surface);
  color: var(--text);
}
.skip-link:focus {
  top: 10px;
}
.site-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  padding: 15px max(20px, calc((100vw - 1240px) / 2));
  background: var(--surface);
  color: var(--text);
  border-bottom: 1px solid var(--border);
}
.site-brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: -0.03em;
  white-space: nowrap;
}
.site-brand span {
  color: var(--accent);
}
.site-links {
  display: flex;
  gap: 16px;
  align-items: center;
  flex: 1;
  flex-wrap: wrap;
  font-size: 13px;
}
.site-links a {
  text-decoration: none;
  font-weight: 600;
  color: var(--muted);
}
.site-links a:hover {
  color: var(--accent);
}
.site-footer {
  padding: 30px 20px;
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  border-top: 1px solid var(--border);
}
.notice {
  padding: 12px 16px;
  border: 1px solid var(--border);
  background: var(--accent-soft);
  border-radius: 10px;
  color: var(--text);
}
@media (max-width: 800px) {
  .site-bar {
    gap: 12px;
    padding: 12px 18px;
  }
  .site-links {
    order: 3;
    flex-basis: 100%;
    gap: 14px;
  }
  html {
    scroll-padding-top: 140px;
  }
}