:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #182b3a;
  background: #eef3f6;
  line-height: 1.6;
}
* { box-sizing: border-box; }
body {
  margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 48px 20px;
  background: radial-gradient(ellipse at top left, #e0eee9, transparent 65%), #eef3f6;
}
.shell { width: 100%; max-width: 460px; }
.brand { display: flex; align-items: center; gap: 18px; margin: 0 0 28px; }
.brand img { flex-shrink: 0; object-fit: contain; }
.brand-name { display: block; font-size: 1.05rem; font-weight: 700; }
.brand-detail { display: block; color: #526471; font-size: .82rem; margin-top: 3px; }
.card {
  background: #fff; border: 1px solid #dce4e8; border-top: 4px solid #17654e;
  border-radius: 16px; padding: 36px; box-shadow: 0 16px 48px #182b3a0c;
}
.eyebrow { color: #17654e; font-size: .72rem; font-weight: 750; letter-spacing: .15em; margin: 0 0 12px; }
h1 { font-size: 1.8rem; line-height: 1.2; letter-spacing: -.04em; margin: 0 0 12px; }
.intro { color: #526471; margin: 0 0 28px; font-size: .95rem; }
.field { margin-bottom: 20px; }
label { display: block; font-size: .87rem; font-weight: 650; margin-bottom: 7px; }
input:not([type="hidden"]) {
  width: 100%; min-height: 48px; border: 1px solid #9daeb8; border-radius: 8px;
  padding: 10px 12px; background: #fff; color: #182b3a; font: inherit;
}
input:hover { border-color: #526471; }
button {
  width: 100%; min-height: 48px; padding: 12px 16px; border: 0; border-radius: 8px;
  background: #17654e; color: white; font: inherit; font-weight: 650; cursor: pointer;
}
button span { margin-left: 12px; }
button:hover { background: #104a39; }
input:focus-visible, button:focus-visible { outline: 3px solid #216baf; outline-offset: 3px; }
.help { font-size: .82rem; color: #526471; margin: 24px 0 0; }
.notice { background: #f1f5f7; border-left: 3px solid #7e98a9; padding: 16px; margin: 24px 0; overflow-wrap: anywhere; }
footer { text-align: center; color: #526471; font-size: .78rem; margin-top: 24px; }
footer span { display: inline-block; margin-top: 5px; }
@media (max-width: 480px) {
  body { padding: 28px 16px; }
  .card { padding: 28px 22px; }
  .brand { gap: 12px; }
  .brand-detail { font-size: .76rem; }
  h1 { font-size: 1.6rem; }
}