:root {
  --ink: #1f2328;
  --muted: #5c6570;
  --line: #d8dde3;
  --bg: #f4f5f7;
  --card: #ffffff;
  --head: #2b3138;
  --accent: #1f5f8b;
  --ok: #2a6b3f;
  --old: #9a3b2f;
  --hi: #eef5fa;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
}

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 24px 48px;
}

.mast {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: flex-end;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.dept {
  margin: 0 0 4px;
  font-size: 12px;
  color: var(--muted);
}
h1 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 6px;
}
.lead {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.meta {
  margin: 0;
  display: grid;
  gap: 4px 16px;
  font-size: 12px;
}
.meta div { display: grid; grid-template-columns: 36px 1fr; gap: 8px; }
.meta dt { color: var(--muted); }
.meta dd { margin: 0; font-variant-numeric: tabular-nums; }

.steps {
  list-style: none;
  display: flex;
  gap: 20px;
  padding: 0;
  margin: 16px 0;
}
.steps li {
  font-size: 13px;
  color: var(--muted);
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
}
.steps li b {
  font-weight: 500;
  margin-right: 6px;
}
.steps li.on {
  color: var(--ink);
  border-bottom-color: var(--accent);
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 18px 18px 14px;
}
.hidden { display: none; }

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}
.panel-head h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 0;
}
.panel-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
}
.hint { margin: 0; font-size: 12px; color: var(--muted); flex: 1; }

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 16px;
}
.form-grid label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}
.span-2 { grid-column: span 2; }
input, textarea, select {
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  padding: 7px 10px;
  border-radius: 2px;
  outline: none;
}
input:focus, textarea:focus, select:focus {
  border-color: var(--accent);
}
textarea { resize: vertical; }

button {
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 7px 12px;
  border-radius: 2px;
}
button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
button.primary.alt {
  background: var(--head);
  border-color: var(--head);
}
button:hover { filter: brightness(0.97); }
button:disabled { opacity: 0.45; cursor: not-allowed; }

.filters { display: flex; gap: 8px; align-items: center; }
.filters input[type="search"] { width: 220px; }
.check { display: flex; gap: 6px; align-items: center; font-size: 12px; color: var(--muted); }

.table-wrap {
  max-height: 520px;
  overflow: auto;
  border: 1px solid var(--line);
}
table.mat {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}
table.mat th {
  position: sticky; top: 0;
  background: var(--head);
  color: #fff;
  font-weight: 500;
  text-align: left;
  padding: 8px;
  z-index: 1;
}
table.mat td {
  padding: 7px 8px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.mat tr:nth-child(even) td { background: #fafbfc; }
table.mat tr.on td { background: var(--hi); }
table.mat .name { font-weight: 600; }
table.mat .code, table.mat input {
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px;
}
table.mat .usages { color: var(--muted); max-width: 180px; }
table.mat td input {
  width: 100%;
  padding: 5px 6px;
}
.chk { width: 34px; text-align: center; }

.meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  padding: 8px 0;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 8px;
}
.meta-bar b { color: var(--ink); font-weight: 600; }

.preview { display: grid; gap: 12px; }
.diff-card {
  border: 1px solid var(--line);
  background: #fff;
  padding: 12px 14px;
}
.diff-card h3 {
  margin: 0 0 8px;
  font-size: 14px;
  font-weight: 600;
}
.diff-card table { width: 100%; border-collapse: collapse; font-size: 12px; }
.diff-card td, .diff-card th { border-bottom: 1px solid var(--line); padding: 5px 6px; text-align: left; }
.old { color: var(--old); text-decoration: line-through; }
.new { color: var(--ok); font-weight: 600; }
.photos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 8px;
  margin: 10px 0;
}
.photos img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: #f0f0f0;
}
.content-diff {
  white-space: pre-wrap;
  font-size: 12px;
  line-height: 1.55;
  background: #fafbfc;
  padding: 10px;
  border-left: 2px solid var(--line);
}
.export-btns { display: flex; gap: 8px; }

@media (max-width: 820px) {
  .wrap { padding: 16px 12px 32px; }
  .mast, .form-grid { display: grid; grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .steps { flex-wrap: wrap; gap: 12px; }
  .panel-head, .panel-foot { flex-direction: column; align-items: stretch; }
  .filters { flex-wrap: wrap; }
}