:root {
  --bg: #fbf6ee;
  --card: #ffffff;
  --ink: #3b2a20;
  --soft: #7a6656;
  --accent: #c4561f;
  --line: #eadfce;
  --tint: #fdeee2;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f1915;
    --card: #2a221d;
    --ink: #f3e9dc;
    --soft: #c2b2a2;
    --accent: #f08a52;
    --line: #3c3129;
    --tint: #33261d;
    color-scheme: dark;
  }
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font:
    17px/1.75 -apple-system,
    BlinkMacSystemFont,
    "PingFang TC",
    "Noto Sans TC",
    "Microsoft JhengHei",
    sans-serif;
}
main {
  max-width: 700px;
  margin: 0 auto;
  padding: 28px max(18px, env(safe-area-inset-right)) 56px max(18px, env(safe-area-inset-left));
}
a {
  color: var(--accent);
}
h1 {
  font-size: 30px;
  line-height: 1.3;
  margin: 6px 0 4px;
  text-wrap: balance;
}
h2 {
  font-size: 20px;
  line-height: 1.4;
  margin: 0 0 8px;
}
p {
  margin: 6px 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 14px;
}
.brand img {
  width: 64px;
  height: 64px;
  border-radius: 15px;
  flex: none;
}
.en {
  color: var(--soft);
  font-size: 15px;
  letter-spacing: .04em;
}
.sub {
  color: var(--soft);
  margin: 10px 0 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 18px 16px;
  margin: 14px 0;
}
.card.hl {
  background: var(--tint);
}
.tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 0 10px;
  margin-left: 6px;
  vertical-align: 2px;
}
.go {
  display: inline-block;
  margin-top: 6px;
  font-weight: 700;
  text-decoration: none;
}
.go:hover {
  text-decoration: underline;
}
details {
  border-top: 1px solid var(--line);
  padding: 10px 0;
}
details:first-of-type {
  border-top: 0;
}
summary {
  cursor: pointer;
  font-weight: 700;
}
label {
  display: block;
  font-weight: 700;
  margin: 10px 0 4px;
}
textarea,
input {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 10px 12px;
}
textarea {
  min-height: 120px;
}
button {
  margin-top: 12px;
  font: inherit;
  font-weight: 700;
  color: #fff;
  background: var(--accent);
  border: 0;
  border-radius: 999px;
  padding: 10px 24px;
  cursor: pointer;
}
button:disabled {
  opacity: .6;
}
#msg {
  margin-top: 8px;
  color: var(--soft);
  min-height: 1.5em;
}
footer {
  color: var(--soft);
  font-size: 14px;
  margin-top: 30px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}
footer a {
  color: var(--soft);
}
.back {
  display: block;
  text-align: center;
  margin: 28px 0 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
}
ul {
  padding-left: 1.3em;
}