:root {
  color-scheme: light;
  --sgm-green: #13562f;
  --sgm-green-dark: #0b3f23;
  --sgm-red: #c9141d;
  --sgm-gold: #d29b18;
  --sgm-ink: #211712;
  --sgm-muted: #625b55;
  --sgm-cream: #fbf8ef;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--sgm-ink);
  background:
    radial-gradient(circle at 20% 10%, rgba(210, 155, 24, .12), transparent 28%),
    radial-gradient(circle at 85% 80%, rgba(19, 86, 47, .1), transparent 30%),
    var(--sgm-cream);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", Meiryo, sans-serif;
  line-height: 1.8;
}

.sakigai-portal {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 28px 16px;
}

.sakigai-portal__card {
  width: min(100%, 620px);
  padding: clamp(28px, 7vw, 56px);
  border: 1px solid rgba(19, 86, 47, .16);
  border-radius: 28px;
  background: rgba(255, 255, 255, .96);
  box-shadow: 0 22px 56px rgba(33, 23, 18, .12);
  text-align: center;
}

.sakigai-portal__eyebrow {
  margin: 0 0 8px;
  color: var(--sgm-green);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .16em;
}

.sakigai-portal h1 {
  margin: 0 0 18px;
  color: var(--sgm-green-dark);
  font-size: clamp(26px, 6vw, 38px);
  line-height: 1.45;
}

.sakigai-portal p { margin: 0; overflow-wrap: anywhere; }

.sakigai-portal__button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: min(100%, 380px);
  min-height: 56px;
  margin-top: 26px;
  padding: 10px 24px;
  border-radius: 999px;
  color: #fff;
  background: var(--sgm-red);
  box-shadow: 0 6px 0 #9f0e16;
  font-weight: 800;
  text-decoration: none;
}

.sakigai-portal__button:hover { filter: brightness(.96); }

.sakigai-portal__button:focus-visible,
.sakigai-portal__sub-link:focus-visible {
  outline: 3px solid var(--sgm-gold);
  outline-offset: 4px;
}

.sakigai-portal__note,
.sakigai-portal__admin-note {
  margin-top: 22px !important;
  color: var(--sgm-muted);
  font-size: 13px;
}

.sakigai-portal__admin-note {
  padding: 12px 14px;
  border-radius: 12px;
  background: #fff3d4;
}

.sakigai-portal__sub-link {
  display: inline-block;
  margin-top: 24px;
  color: var(--sgm-green);
  font-weight: 700;
}

@media (max-width: 480px) {
  .sakigai-portal__card { border-radius: 20px; }
}

.sakigai-portal__home{display:inline-block;margin:18px 20px 0;color:var(--sgm-green);font-weight:700;text-underline-offset:4px;}
.sakigai-portal__home:focus-visible{outline:3px solid var(--sgm-gold);outline-offset:4px;}
.sakigai-portal{min-height:calc(100vh - 60px);}