:root {
  color-scheme: light;
  font-family:
    -apple-system, BlinkMacSystemFont, "Noto Sans TC", "PingFang HK",
    sans-serif;
  background: #f4f7f5;
  color: #152b2c;
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
a {
  color: #0f766e;
}
.shell {
  margin: 0 auto;
  max-width: 820px;
  padding: 40px 20px 72px;
}
.eyebrow {
  color: #0f766e;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
}
h1 {
  font-size: clamp(32px, 7vw, 52px);
  line-height: 1.05;
  margin: 12px 0 18px;
}
h2 {
  font-size: 21px;
  margin: 32px 0 10px;
}
p, li, label, input, textarea, select, button {
  font-size: 16px;
  line-height: 1.65;
}
.card {
  background: #fff;
  border: 1px solid #d8e2dd;
  border-radius: 20px;
  margin-top: 22px;
  padding: 22px;
}
.muted {
  color: #5f7372;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 24px 0;
}
.nav a {
  background: #d9f3ed;
  border-radius: 999px;
  font-weight: 700;
  padding: 9px 14px;
  text-decoration: none;
}
.field {
  display: grid;
  gap: 7px;
  margin: 16px 0;
}
input, textarea, select {
  border: 1px solid #adbfba;
  border-radius: 12px;
  padding: 12px;
  width: 100%;
}
textarea {
  min-height: 150px;
  resize: vertical;
}
button {
  background: #0f766e;
  border: 0;
  border-radius: 12px;
  color: #fff;
  cursor: pointer;
  font-weight: 800;
  padding: 12px 18px;
}
.warning {
  background: #fff4db;
  border-radius: 12px;
  color: #744500;
  padding: 12px;
}
footer {
  border-top: 1px solid #d8e2dd;
  color: #5f7372;
  margin-top: 40px;
  padding-top: 20px;
}