:root {
  --public-blue: #0d48e8;
  --public-ink: #17191f;
  --public-muted: #687080;
  --public-line: #dfe4ed;
  --public-paper: #f8f8f5;
  --public-card: #ffffff;
}

* { box-sizing: border-box; }
html { background: var(--public-paper); }
body {
  margin: 0;
  color: var(--public-ink);
  background: var(--public-paper);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  font-size: 16px;
  line-height: 1.9;
  overflow-wrap: anywhere;
  word-break: normal;
}
a { color: var(--public-blue); }
img { max-width: 100%; height: auto; }

.public-shell { min-height: 100vh; display: flex; flex-direction: column; }
.public-header,
.public-main,
.public-footer { width: min(1080px, calc(100% - 40px)); margin: 0 auto; }
.public-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--public-line);
}
.public-brand { display: inline-flex; align-items: center; gap: 10px; color: var(--public-ink); text-decoration: none; }
.public-brand img { width: 40px; height: 40px; object-fit: contain; filter: grayscale(1); }
.public-brand strong { display: block; font-size: 15px; letter-spacing: .14em; line-height: 1.2; }
.public-brand small { display: block; color: var(--public-muted); font-size: 9px; letter-spacing: .14em; line-height: 1.4; }
.public-nav { display: flex; align-items: center; justify-content: flex-end; gap: 16px; flex-wrap: wrap; }
.public-nav a { color: var(--public-muted); font-size: 14px; text-decoration: none; }
.public-nav a:hover { color: var(--public-blue); }
.public-cta { padding: 8px 14px; border-radius: 999px; color: #fff !important; background: var(--public-blue); }
.public-main { flex: 1; padding: 76px 0 100px; }
.public-hero { max-width: 820px; padding: 34px 0 74px; }
.public-kicker { margin: 0 0 14px; color: var(--public-blue); font-size: 12px; font-weight: 700; letter-spacing: .16em; }
.public-hero h1 { max-width: 820px; margin: 0; font-size: clamp(2.2rem, 6vw, 4.7rem); line-height: 1.25; letter-spacing: -.04em; }
.public-hero .lead { max-width: 680px; margin: 26px 0 0; color: var(--public-muted); font-size: 18px; }
.public-actions { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-top: 30px; }
.public-button { display: inline-block; padding: 11px 18px; border: 1px solid var(--public-blue); border-radius: 999px; color: #fff; background: var(--public-blue); font-weight: 700; text-decoration: none; }
.public-button.secondary { color: var(--public-blue); background: transparent; }
.public-section { padding: 48px 0; border-top: 1px solid var(--public-line); }
.public-section h2 { margin: 0 0 22px; font-size: clamp(1.55rem, 3vw, 2.3rem); line-height: 1.4; letter-spacing: -.025em; }
.public-section > p { max-width: 760px; color: var(--public-muted); }
.public-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.public-card { padding: 24px; border: 1px solid var(--public-line); border-radius: 18px; background: var(--public-card); }
.public-card h3 { margin: 0 0 8px; font-size: 18px; line-height: 1.5; }
.public-card p { margin: 0; color: var(--public-muted); }
.public-card a { display: inline-block; margin-top: 14px; font-weight: 700; }
.public-prose { max-width: 780px; }
.public-prose h1 { margin: 0 0 34px; font-size: clamp(2rem, 5vw, 3.7rem); line-height: 1.35; letter-spacing: -.04em; }
.public-prose h2 { margin: 54px 0 14px; }
.public-prose h3 { margin: 32px 0 8px; font-size: 19px; line-height: 1.55; }
.public-prose p { margin: 0 0 18px; }
.public-prose ul { margin: 0 0 22px; padding-left: 1.4em; }
.public-prose li { margin: 7px 0; }
.public-meta { color: var(--public-muted); font-size: 14px; }
.public-note { margin: 28px 0; padding: 20px 22px; border-left: 4px solid var(--public-blue); background: #edf2ff; }
.public-faq { max-width: 780px; }
.public-faq details { padding: 18px 0; border-top: 1px solid var(--public-line); }
.public-faq details:last-child { border-bottom: 1px solid var(--public-line); }
.public-faq summary { cursor: pointer; font-weight: 700; }
.public-faq details p { margin: 12px 0 0; color: var(--public-muted); }
.public-footer { display: flex; justify-content: space-between; gap: 20px; padding: 26px 0 34px; border-top: 1px solid var(--public-line); color: var(--public-muted); font-size: 13px; }
.public-footer nav { display: flex; gap: 14px; flex-wrap: wrap; }
.public-footer a { color: inherit; }

@media (max-width: 720px) {
  .public-header,
  .public-main,
  .public-footer { width: min(100% - 28px, 640px); }
  .public-header { align-items: flex-start; flex-direction: column; }
  .public-nav { justify-content: flex-start; gap: 10px 14px; }
  .public-main { padding-top: 42px; padding-bottom: 60px; }
  .public-hero { padding: 20px 0 42px; }
  .public-hero .lead { font-size: 16px; }
  .public-grid { grid-template-columns: 1fr; }
  .public-footer { flex-direction: column; }
}