:root {
  color-scheme: light;
  --ink: #173b38;
  --muted: #5c716d;
  --accent: #178477;
  --paper: #ffffff;
  --background: #f3f7f6;
  --line: #dce8e5;
}

* { box-sizing: border-box; }

html { min-width: 320px; min-height: 100%; background: var(--background); }

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

.page {
  min-height: 100vh;
  display: grid;
  grid-template-rows: 1fr auto;
  justify-items: center;
  padding: clamp(20px, 5vw, 64px) 20px 22px;
}

.notice {
  align-self: center;
  width: min(100%, 760px);
  padding: clamp(36px, 7vw, 76px) clamp(22px, 8vw, 88px);
  text-align: center;
  background: var(--paper);
  border: 1px solid #e5eeeb;
  border-radius: 20px;
  box-shadow: 0 18px 55px rgb(22 67 60 / 7%);
}

.mark {
  display: grid;
  width: 68px;
  height: 68px;
  margin: 0 auto 25px;
  place-items: center;
  color: var(--accent);
  background: #e8f4f1;
  border-radius: 50%;
}

.mark svg { width: 34px; height: 34px; fill: currentColor; }

.eyebrow {
  margin: 0 0 17px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .18em;
}

h1 {
  margin: 0;
  font-size: clamp(27px, 5vw, 42px);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .035em;
  text-wrap: balance;
}

.rule {
  width: 46px;
  height: 3px;
  margin: 27px auto 29px;
  background: var(--accent);
  border-radius: 2px;
}

.message {
  margin: 0;
  color: var(--muted);
  font-size: clamp(14px, 2vw, 16px);
  line-height: 2.05;
  letter-spacing: .025em;
}

.closing { margin-top: 9px; }

.company {
  margin: 36px 0 0;
  padding-top: 23px;
  color: var(--ink);
  border-top: 1px solid var(--line);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .08em;
}

footer {
  padding-top: 24px;
  color: #81928f;
  font-size: 11px;
  letter-spacing: .04em;
  text-align: center;
}

.mobile-break { display: none; }

@media (max-width: 560px) {
  .page { padding: 16px 14px 17px; }
  .notice { padding: 38px 22px 32px; border-radius: 16px; }
  .mark { width: 58px; height: 58px; margin-bottom: 22px; }
  .mark svg { width: 29px; height: 29px; }
  .eyebrow { font-size: 9px; letter-spacing: .14em; }
  h1 { font-size: clamp(25px, 7.3vw, 34px); line-height: 1.55; }
  .mobile-break { display: initial; }
  .desktop-break { display: none; }
  .message { font-size: 14px; line-height: 1.95; }
  .company { margin-top: 29px; padding-top: 20px; }
}