:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e6edf5;
  --muted: #8b98a9;
  --accent: #3b82f6;
  --accent2: #22c55e;
  --danger: #ef4444;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, "Segoe UI", "Noto Sans TC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}

code {
  background: rgba(255, 255, 255, .08);
  padding: .1rem .35rem;
  border-radius: 4px;
  font-size: .9em;
}

.hdr {
  padding: 1.25rem 1.5rem 0;
}

.hdr h1 {
  margin: 0 0 .35rem;
  font-weight: 700;
}

.muted {
  color: var(--muted);
  font-size: .9rem;
}

main {
  max-width: 1180px;
  margin: 0 auto;
  padding: .5rem 1.5rem 2rem;
}

.card {
  background: var(--card);
  padding: 1rem 1.25rem;
  border-radius: 10px;
  margin-bottom: 1rem;
  border: 1px solid rgba(255, 255, 255, .06);
}

.card h2 {
  margin-top: 0;
  font-size: 1.05rem;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: .65rem .9rem;
  margin-bottom: .75rem;
}

@media(max-width: 720px) {
  .grid2 {
    grid-template-columns: 1fr;
  }
}

label {
  display: block;
  font-size: .82rem;
  color: var(--muted);
}

input[type="text"],
input[type="email"],
input[type="number"],
input[type="password"],
textarea,
select {
  width: 100%;
  padding: .45rem .55rem;
  border-radius: 6px;
  border: 1px solid rgba(255, 255, 255, .12);
  background: rgba(0, 0, 0, .25);
  color: var(--text);
}

.row {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem .75rem;
  align-items: center;
}

.grow {
  flex: 1;
  min-width: 220px;
}

.btnrow {
  display: flex;
  align-items: flex-end;
}

button {
  border: none;
  border-radius: 8px;
  padding: .55rem 1rem;
  font-weight: 600;
  cursor: pointer;
  font-size: .9rem;
}

button.primary {
  background: linear-gradient(180deg, var(--accent), #2563eb);
  color: #fff;
}

button.secondary {
  background: rgba(255, 255, 255, .1);
  color: var(--text);
}

button.danger {
  background: rgba(239, 68, 68, .2);
  color: var(--danger);
}

.actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-bottom: 2rem;
}

.msg.ok {
  color: var(--accent2);
}

.msg.err {
  color: var(--danger);
}

.dash summary {
  font-weight: 700;
  cursor: pointer;
  padding: .35rem .5rem .35rem .25rem;
}

.rules {
  width: 100%;
  border-collapse: collapse;
  margin: .65rem 0;
  font-size: .82rem;
}

.rules th {
  text-align: left;
  padding: .35rem;
  border-bottom: 1px solid rgba(255, 255, 255, .1);
}

.rules td {
  padding: .35rem;
  vertical-align: top;
}

.sub td {
  background: rgba(0, 0, 0, .15);
  padding-bottom: .75rem;
}

.inl {
  display: inline-flex;
  gap: .35rem;
  align-items: center;
  margin-right: 1rem;
  font-size: .78rem;
}

.inl input[type="number"] {
  width: 72px;
}

.rules-min td,
.rules-min th {
  vertical-align: middle;
}

.rules-min .th-on,
.rules-min .td-on {
  width: 3rem;
  text-align: center;
}

.rules-min .th-op,
.rules-min .td-op {
  width: 5.5rem;
  text-align: center;
}

.rules-min .th-num,
.rules-min .td-num {
  width: 9rem;
  text-align: left;
}

.rules-min .sop {
  width: auto;
  min-width: 3.5rem;
  text-align: center;
}

.rules-min .td-ind {
  font-size: .88rem;
  line-height: 1.38;
}

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

.thr-wrap {
  display: inline-flex;
  align-items: center;
  gap: .35rem;
  flex-wrap: nowrap;
}

.thr-wrap .svl {
  width: auto;
  min-width: 4rem;
  max-width: 7rem;
}

.thr-unit {
  font-size: .82rem;
  white-space: nowrap;
}

.small-nm {
  margin-top: .4rem;
  font-size: .82rem;
}