:root {
  --bg: #f1f4f7;
  --surface: #fbfcfe;
  --text: #172435;
  --muted: #637184;
  --line: #dce2e8;
  --blue: #315f85;
  --blue-soft: #eaf1f6;
  --max: 1100px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
.shell { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); background: rgba(241,244,247,.96); }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { text-decoration: none; font-weight: 800; font-size: 1.25rem; }
.qiexo-link { color: var(--muted); text-decoration: none; font-weight: 600; }
.hero { padding: 92px 0 72px; max-width: var(--max); }
.shield {
  width: 92px; height: 108px; margin-bottom: 28px; display: grid; place-items: center;
  background: var(--blue); color: white;
  clip-path: polygon(50% 0, 90% 14%, 82% 68%, 50% 100%, 18% 68%, 10% 14%);
}
.shield.small { width: 64px; height: 74px; margin-inline: auto; margin-bottom: 22px; }
.shield-mark { font-size: 1.8rem; font-weight: 900; }
.eyebrow { margin: 0 0 12px; color: var(--blue); text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 800; }
h1, h2, p { margin-top: 0; }
h1 { max-width: 820px; margin-bottom: 22px; font-size: clamp(2.8rem, 7vw, 5.5rem); line-height: 1; letter-spacing: -.05em; }
.lead { max-width: 760px; margin-bottom: 24px; color: var(--muted); font-size: clamp(1.1rem, 2vw, 1.35rem); }
.lead.compact { font-size: 1.08rem; }
.status { display: inline-flex; padding: 8px 12px; border-radius: 999px; background: var(--blue-soft); color: var(--blue); font-weight: 750; font-size: .78rem; text-transform: uppercase; letter-spacing: .05em; }
.info { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; padding-bottom: 84px; }
.card { padding: 28px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); }
.card h2, .contact h2 { margin-bottom: 8px; font-size: 1.5rem; }
.card p { margin-bottom: 0; color: var(--muted); }
.contact { margin-bottom: 88px; padding: 30px; border: 1px solid var(--line); border-radius: 18px; background: var(--surface); display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.email-button { display: inline-block; padding: 13px 17px; border-radius: 12px; background: var(--text); color: white; text-decoration: none; font-weight: 700; }
.email-button:hover, .email-button:focus-visible { background: var(--blue); }
.site-footer { border-top: 1px solid var(--line); color: var(--muted); }
.footer-inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 24px; font-size: .92rem; }
.invite-page { min-height: 100vh; display: grid; place-items: center; padding: 28px; }
.invite-card { width: min(100%, 680px); padding: 44px; border: 1px solid var(--line); border-radius: 22px; background: var(--surface); text-align: center; }
.invite-card h1 { font-size: clamp(2rem, 6vw, 3.8rem); max-width: none; }
.privacy-note { margin: 28px 0; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: var(--blue-soft); color: var(--muted); text-align: left; }
.privacy-note strong { color: var(--text); }
@media (max-width: 760px) {
  .hero { padding-top: 68px; }
  .info { grid-template-columns: 1fr; }
  .contact, .footer-inner { align-items: flex-start; flex-direction: column; }
  .footer-inner { justify-content: center; padding-block: 24px; }
  .invite-card { padding: 30px 22px; }
}