:root {
  color-scheme: light;
  --ink: #20212a;
  --muted: #666a78;
  --paper: #fffdf8;
  --wash: #f2f1fa;
  --line: #ddddea;
  --violet: #5b5bd6;
  --teal: #159b8f;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 10% 0%, rgba(91, 91, 214, .12), transparent 28rem),
    radial-gradient(circle at 100% 16%, rgba(21, 155, 143, .10), transparent 24rem),
    var(--wash);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--violet); }
a:hover { text-decoration-thickness: 2px; }

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

header { padding: 28px 0 12px; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-size: 22px;
  font-weight: 800;
  text-decoration: none;
}

.mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 13px;
  color: white;
  background: linear-gradient(140deg, var(--violet), var(--teal));
  box-shadow: 0 7px 18px rgba(55, 55, 130, .2);
}

nav { float: right; padding-top: 8px; }
nav a { margin-left: 18px; color: var(--muted); font-weight: 650; text-decoration: none; }

main {
  margin: 24px 0 64px;
  padding: clamp(26px, 6vw, 64px);
  border: 1px solid rgba(255, 255, 255, .9);
  border-radius: 32px;
  background: rgba(255, 255, 255, .88);
  box-shadow: 0 20px 60px rgba(47, 48, 74, .09);
}

.eyebrow {
  color: var(--teal);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

h1 { margin: 4px 0 8px; font-size: clamp(36px, 7vw, 60px); line-height: 1.05; letter-spacing: -.04em; }
h2 { margin: 40px 0 10px; font-size: 24px; line-height: 1.25; letter-spacing: -.02em; }
h3 { margin: 26px 0 6px; }
p, li { color: #3f4250; }
li + li { margin-top: 7px; }
.lede { max-width: 680px; color: var(--muted); font-size: 19px; }
.updated { color: var(--muted); font-size: 14px; }

.notice, .contact-card {
  margin: 28px 0;
  padding: 20px 22px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--paper);
}

.notice { border-left: 5px solid var(--violet); }
.contact-card strong { display: block; margin-bottom: 3px; }

.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.grid .contact-card { margin: 0; }

footer { padding: 0 0 40px; color: var(--muted); font-size: 14px; text-align: center; }

@media (max-width: 680px) {
  nav { float: none; display: flex; gap: 14px; overflow-x: auto; padding: 18px 0 0; }
  nav a { margin: 0; white-space: nowrap; }
  .grid { grid-template-columns: 1fr; }
  main { border-radius: 24px; }
}