:root {
  --bg: #f4f0e6;
  --ink: #1c1915;
  --line: #d9d0c1;
  --accent: #8c2f1b;
  --ok: #1f6b45;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang HK", "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--ink);
}

header, main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1rem 1.1rem;
}

header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  border-bottom: 1px solid var(--line);
}

.brand { margin: 0; }

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}

nav form { margin: 0; }

a { color: var(--accent); }

h1 { font-size: 1.6rem; margin: 0 0 0.8rem; }
h2 { font-size: 1.15rem; margin: 1.6rem 0 0.4rem; }

label { display: block; margin: 0.85rem 0 0.25rem; font-weight: 700; }
label.check { font-weight: 400; }

input, select, textarea, button { font: inherit; }

input, select, textarea {
  width: min(100%, 28rem);
  padding: 0.5rem 0.55rem;
  background: #fff;
  border: 1px solid #b7ad9e;
}

button, a.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  border: 0;
  padding: 0.5rem 0.85rem;
  text-decoration: none;
  cursor: pointer;
}

button.quiet {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 0.3rem 0.6rem;
}

.banner {
  padding: 0.65rem 0.75rem;
  background: #fff;
  border: 1px solid var(--line);
}

.banner.error { border-color: var(--accent); }
.banner.ok { border-color: var(--ok); }

.hint { color: #4e463c; }

.table-wrap { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }

th, td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 0.45rem 0.35rem;
  vertical-align: top;
}

td form { margin: 0; }

.danger-form {
  margin-top: 1.2rem;
  padding-top: 0.6rem;
  border-top: 1px solid var(--line);
}

code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

.facts {
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: 0.35rem 0.8rem;
  margin: 0 0 1rem;
}

.facts dt { font-weight: 700; }
.facts dd { margin: 0; }

main form + form { margin-top: 1.2rem; }

@media (max-width: 640px) {
  header { align-items: flex-start; flex-direction: column; }
  header, main { padding: 0.85rem; }
}