:root {
  --ink: #0b1736;
  --ink-2: #22345f;
  --blue: #155eef;
  --sky: #e8f1ff;
  --paper: #fbf8f0;
  --line: rgba(11, 23, 54, 0.12);
  --muted: #687391;
  --card: rgba(255, 255, 255, 0.78);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 8%, rgba(21, 94, 239, 0.14), transparent 28%),
    radial-gradient(circle at 88% 5%, rgba(243, 167, 18, 0.14), transparent 30%),
    linear-gradient(135deg, #f7fbff 0%, var(--paper) 48%, #eef5ff 100%);
  font-family: "Avenir Next", "Trebuchet MS", Verdana, sans-serif;
  line-height: 1.65;
}

.wrap {
  width: min(940px, calc(100% - 38px));
  margin: 0 auto;
  padding: 24px 0 64px;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(16px);
  margin-bottom: 54px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--ink);
  text-decoration: none;
}

.mark {
  width: 33px;
  height: 33px;
  border-radius: 11px;
  background: linear-gradient(145deg, var(--blue), #5ec2ff);
  display: grid;
  place-items: center;
  color: white;
}

.nav a:not(.brand) {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
}

.hero {
  border: 1px solid var(--line);
  border-radius: 32px;
  background: var(--card);
  padding: clamp(28px, 5vw, 54px);
  box-shadow: 0 24px 70px rgba(12, 35, 92, 0.12);
  margin-bottom: 22px;
}

.eyebrow {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--sky);
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  margin-bottom: 18px;
}

h1 {
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(42px, 7vw, 72px);
  line-height: 0.94;
  letter-spacing: -0.07em;
  margin: 0 0 16px;
}

.updated {
  color: var(--muted);
  margin: 0;
}

.content {
  display: grid;
  gap: 16px;
}

section {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255,255,255,0.68);
  padding: 24px;
}

h2 {
  margin: 0 0 10px;
  font-size: 24px;
  letter-spacing: -0.045em;
}

p, li { color: var(--ink-2); }

ul { padding-left: 22px; }

.notice {
  border-left: 4px solid var(--blue);
  background: rgba(21,94,239,0.08);
  padding: 14px 16px;
  border-radius: 14px;
  color: var(--ink-2);
}

.footer {
  color: var(--muted);
  font-size: 13px;
  margin-top: 28px;
}

@media (max-width: 640px) {
  .nav { border-radius: 22px; align-items: flex-start; }
  .nav div { display: grid; gap: 6px; }
}