:root {
  color-scheme: light;
  --ink: #1c2430;
  --muted: #5c6b7a;
  --line: #d5dde6;
  --paper: #f6f8fb;
  --card: #fff;
  --accent: #1f4e79;
  --danger: #8c2f2f;
  --ok: #1d6b45;
  --warn: #8a5a00;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Segoe UI", "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.5;
}

header {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.8rem 1.25rem;
  background: var(--accent);
  color: #fff;
}

header a, header button {
  color: #fff;
  text-decoration: none;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.8rem;
  align-items: center;
}

nav form { margin: 0; }

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

nav button {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 4px;
  padding: 0.15rem 0.55rem;
  cursor: pointer;
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem;
}

h1 { font-size: 1.45rem; margin: 0 0 0.8rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.6rem; }

section, form.card, .card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 1rem;
  margin: 0 0 1rem;
}

form.danger, section.danger {
  border-color: #e2c1c1;
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
  align-items: end;
  margin-bottom: 0.75rem;
}

label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.92rem;
}

label.inline {
  flex-direction: row;
  align-items: center;
}

input, select {
  padding: 0.35rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
}

button.primary, button.danger {
  border: 0;
  border-radius: 4px;
  padding: 0.4rem 0.8rem;
  cursor: pointer;
  color: #fff;
}

button.primary { background: var(--accent); }
button.danger { background: var(--danger); }

.checks {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  max-height: 14rem;
  overflow: auto;
  padding: 0.4rem 0;
}

.checks label { flex-direction: row; align-items: center; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

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

.scroll { overflow-x: auto; }

.error, .warn, .ok, .notice {
  padding: 0.6rem 0.75rem;
  border-radius: 6px;
  margin: 0 0 1rem;
}

.error { background: #fdecec; color: var(--danger); }
.warn { background: #fff6e5; color: var(--warn); }
.ok, .notice { background: #e8f6ee; color: var(--ok); }

pre.log {
  white-space: pre-wrap;
  word-break: break-word;
  background: #101820;
  color: #e7eef5;
  padding: 0.8rem;
  border-radius: 6px;
  max-height: 36rem;
  overflow: auto;
  font-size: 0.82rem;
}

.muted { color: var(--muted); font-size: 0.9rem; }

.captcha {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.captcha img {
  border: 1px solid var(--line);
  border-radius: 4px;
  background: #fff;
}