:root {
  --background: #f2f2f7;
  --paper: rgba(255, 255, 255, 0.96);
  --ink: #1c1c1e;
  --muted: #8e8e93;
  --line: rgba(60, 60, 67, 0.12);
  --accent: #007aff;
  --accent-soft: rgba(0, 122, 255, 0.12);
  --shadow: rgba(0, 0, 0, 0.06);
  --max-width: 860px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--ink);
  line-height: 1.65;
  background:
    radial-gradient(circle at top left, rgba(0, 122, 255, 0.1), transparent 28rem),
    linear-gradient(180deg, #ffffff 0%, var(--background) 100%);
  background-attachment: fixed;
}

a {
  color: var(--accent);
}

.page-shell {
  min-height: 100vh;
  padding: 2rem 1.25rem 3rem;
}

.hero,
.content-card {
  width: min(100%, var(--max-width));
  margin: 0 auto;
}

.hero {
  display: grid;
  gap: 1rem;
  align-items: end;
  margin-bottom: 1.5rem;
}

.eyebrow {
  margin: 0 0 0.5rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

h1,
h2,
h3 {
  line-height: 1.15;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4rem);
  letter-spacing: -0.04em;
  white-space: nowrap;
}

@media (max-width: 480px) {
  h1 {
    white-space: normal;
  }
}

.lede {
  max-width: 42rem;
  margin: 0.75rem 0 0;
  font-size: 1.05rem;
  color: var(--muted);
}

.top-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

.nav-link:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.nav-link.current {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.content-card {
  padding: 1.4rem;
  background: var(--paper);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: 1.5rem;
  box-shadow: 0 10px 40px var(--shadow);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.notice {
  margin-bottom: 1.5rem;
  padding: 0.9rem 1rem;
  border-left: 4px solid var(--accent);
  border-radius: 0.8rem;
  background: var(--accent-soft);
  color: #1a1a1a;
}

.meta {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--muted);
}

section+section {
  margin-top: 1.8rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

h2 {
  margin: 0 0 0.85rem;
  font-size: 1.45rem;
}

h3 {
  margin: 1rem 0 0.45rem;
  font-size: 1.05rem;
}

p {
  margin: 0 0 0.9rem;
}

ul {
  margin: 0.5rem 0 1rem;
  padding-left: 1.2rem;
}

li+li {
  margin-top: 0.35rem;
}

.contact-block {
  padding: 1.25rem;
  border-radius: 1rem;
  background: rgba(60, 60, 67, 0.05);
}

@media (min-width: 900px) {
  .page-shell {
    padding-top: 3rem;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 1.5rem;
  }

  .content-card {
    padding: 2rem 2.5rem;
  }
}