:root {
  --bg: #0b1020;
  --card: rgba(255, 255, 255, .9);
  --text: #172033;
  --muted: #667085;
  --line: rgba(23, 32, 51, .12);
  --accent: #ef4444;
  --shadow: 0 24px 70px rgba(0, 0, 0, .24);
  --radius: 24px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(239, 68, 68, .26), transparent 28rem),
    radial-gradient(circle at bottom right, rgba(16, 185, 129, .18), transparent 32rem),
    linear-gradient(135deg, #111827, var(--bg));
}
a { color: inherit; }
.shell {
  width: min(100% - 32px, 980px);
  margin: 0 auto;
  padding: 28px 0;
}
.header,
.content,
.footer {
  border: 1px solid rgba(255, 255, 255, .32);
  border-radius: var(--radius);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 950;
}
.brand span:first-child {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #991b1b);
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.nav a {
  border-radius: 999px;
  padding: 9px 12px;
  color: var(--muted);
  font-weight: 850;
  text-decoration: none;
}
.nav a:hover,
.nav a.active {
  background: rgba(15, 23, 42, .08);
  color: var(--text);
}
.content {
  margin-top: 16px;
  padding: clamp(20px, 4vw, 38px);
}
h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 6vw, 4.4rem);
  line-height: .96;
  letter-spacing: -.08em;
}
h2 {
  margin: 30px 0 8px;
  font-size: 1.05rem;
  letter-spacing: -.02em;
}
p,
li { color: #344054; }
ul { padding-left: 1.2rem; }
.notice,
.info-box {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  background: rgba(255, 255, 255, .7);
}
.notice {
  border-color: rgba(239, 68, 68, .24);
  background: rgba(254, 226, 226, .58);
}
.info-box {
  display: grid;
  gap: 6px;
}
.placeholder {
  color: #991b1b;
  font-weight: 900;
}
.footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
  padding: 14px 16px;
  color: var(--muted);
  font-weight: 800;
}
.footer a { text-decoration: none; }
@media (max-width: 680px) {
  .header { align-items: flex-start; flex-direction: column; }
  .shell { width: min(100% - 18px, 980px); padding: 10px 0; }
}