:root {
  color-scheme: light;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", "Microsoft JhengHei", system-ui, sans-serif;
  font-synthesis: none;
  color: #26354b;
  background: #eef1f5;
}
* { box-sizing: border-box; }
body { margin: 0; min-height: 100svh; display: flex; align-items: center; position: relative; overflow-x: hidden; padding: 64px max(32px, 10vw); }
body::before { content: ""; position: fixed; width: 39vw; height: 24vw; min-height: 240px; max-height: 400px; right: 6vw; top: 29%; border: 26px solid #2358d5; border-radius: 42% 20% 42% 20%; transform: rotate(-28deg); pointer-events: none; }
body::after { content: ""; position: fixed; right: 19vw; top: calc(29% + 7vw); width: 10vw; height: 10vw; border-radius: 26%; background: #ffd15b; border: 12px solid #172b4d; transform: rotate(12deg); box-shadow: 9px 12px 0 #cad3e0; pointer-events: none; }
main { width: min(100%, 420px); position: relative; z-index: 1; }
.mark { width: 52px; height: 52px; border-radius: 15px; background: #ffd15b; color: #172b4d; display: grid; place-items: center; font-size: 28px; font-weight: 750; margin-bottom: 34px; }
.eyebrow { font-size: 13px; letter-spacing: .015em; font-weight: 650; color: #2358d5; }
h1 { font-size: clamp(34px, 3.7vw, 52px); line-height: 1.22; letter-spacing: -.055em; margin: 17px 0; color: #172b4d; }
h1 span { color: #596a83; }
.intro { font-size: 16px; line-height: 1.8; color: #596a83; margin-bottom: 34px; }
form { display: grid; }
label { font-size: 13px; font-weight: 650; margin: 0 0 8px; }
input { width: 100%; border: 1px solid #c1cddd; border-radius: 11px; padding: 14px 16px; background: #fff; color: #26354b; font: inherit; font-size: 16px; margin-bottom: 21px; transition: border-color 160ms, box-shadow 160ms; }
input:focus-visible { outline: 3px solid #2358d540; outline-offset: 2px; border-color: #2358d5; }
button { min-height: 52px; border: 0; border-radius: 11px; background: #172b4d; color: #fff; padding: 15px 18px; font: inherit; font-size: 15px; font-weight: 650; cursor: pointer; display: flex; justify-content: space-between; transition: background 160ms, transform 160ms; }
button span { color: #ffd15b; font-size: 20px; line-height: 1; }
button:hover { background: #2358d5; }
button:active { transform: translateY(1px); }
button:focus-visible { outline: 3px solid #2358d5; outline-offset: 4px; }
.error { color: #963523; font-size: 14px; line-height: 1.6; margin: 0 0 16px; }
.error:empty { display: none; }
.footnote { font-size: 12px; color: #596a83; margin: 27px 0 0; }
@media (max-width: 1000px) {
  body { padding-left: 7vw; padding-right: 7vw; }
  main { width: min(100%, 390px); }
  body::before { right: -14vw; opacity: .3; }
  body::after { right: 0; opacity: .3; }
}
@media (max-width: 700px) {
  body { justify-content: center; padding: 38px 24px; }
  body::before, body::after { display: none; }
  main { width: min(100%, 420px); }
  h1 { font-size: clamp(34px, 8.2vw, 46px); }
  .mark { margin-bottom: 26px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; animation: none !important; }
}