:root {
  --bg: #f5f7f8;
  --panel: #ffffff;
  --text: #1f2933;
  --muted: #667085;
  --line: #d9e0e8;
  --primary: #176b5d;
  --primary-dark: #0f4f44;
  --accent: #f2b84b;
  --danger: #b42318;
  --ok: #16703f;
  --soft: #eef7f4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Microsoft JhengHei", Arial, sans-serif;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 18px 28px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.96);
}

.topbar h1,
.topbar p,
.panel h2,
.panel p,
.auth-card h2,
.auth-card p {
  margin: 0;
}

.topbar h1 {
  font-size: 22px;
}

.topbar p,
.auth-card p,
.panel-header p,
.muted {
  color: var(--muted);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.session-label {
  color: var(--muted);
  font-size: 14px;
}

.layout {
  width: min(1240px, calc(100% - 32px));
  margin: 18px auto 40px;
}

.auth-shell {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.auth-card,
.panel,
.metric-card,
.detail-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.auth-card {
  display: grid;
  gap: 14px;
  padding: 22px;
}

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
  overflow-x: auto;
}

.tab-button {
  min-width: max-content;
}

.tab-button.active {
  border-color: var(--primary);
  background: var(--soft);
  color: var(--primary-dark);
}

.panel {
  padding: 20px;
}

.panel-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.form-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.form-grid.compact {
  align-items: end;
}

label {
  display: grid;
  gap: 7px;
  font-weight: 700;
}

label span {
  font-size: 14px;
}

input,
select,
textarea,
button {
  min-height: 42px;
  border-radius: 6px;
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  padding: 9px 11px;
  background: #fff;
}

button {
  border: 1px solid var(--line);
  padding: 0 16px;
  background: #fff;
  color: var(--text);
  cursor: pointer;
  font-weight: 700;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.primary-button {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}

.ghost-button {
  background: transparent;
}

.small-button {
  min-height: 34px;
  padding: 0 12px;
  font-size: 14px;
}

.actions-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 16px 0;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 12px 0 16px;
}

.metric-card {
  padding: 16px;
}

.metric-card span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 13px;
}

.metric-card strong {
  font-size: 24px;
}

.list-block {
  display: grid;
  gap: 10px;
}

.list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.list-item.selectable {
  cursor: pointer;
}

.list-item.selected {
  border-color: var(--primary);
  background: var(--soft);
}

.list-item strong,
.list-item small {
  display: block;
}

.list-item small {
  margin-top: 5px;
  color: var(--muted);
}

.empty-state {
  border: 1px dashed var(--line);
  border-radius: 8px;
  padding: 18px;
  color: var(--muted);
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.detail-card {
  padding: 16px;
}

.detail-card.wide {
  grid-column: 1 / -1;
}

.data-list {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: 8px 12px;
}

.data-list dt {
  color: var(--muted);
}

.data-list dd {
  margin: 0;
  overflow-wrap: anywhere;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
}

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

th,
td {
  border: 1px solid var(--line);
  padding: 10px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f1f5f9;
}

.article-preview {
  width: 100%;
  min-height: 680px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  max-width: min(420px, calc(100% - 36px));
  padding: 12px 14px;
  border-radius: 8px;
  background: #111827;
  color: #fff;
  box-shadow: 0 16px 40px rgba(15, 23, 42, 0.22);
}

[hidden] {
  display: none !important;
}

.auto-article {
  color: #2d231d;
  font-size: 18px;
  line-height: 1.85;
  padding: 20px;
}

.auto-article h2 {
  border-left: 6px solid var(--primary);
  padding-left: 12px;
  font-weight: 800;
  margin-top: 34px;
}

.article-summary {
  border-left: 6px solid var(--primary);
  background: #fff7e4;
  padding: 16px 18px;
}

.article-toc {
  border: 2px solid var(--primary);
  padding: 18px 22px;
  margin: 24px 0;
  background: #fff;
}

.image-placeholder {
  display: grid;
  place-items: center;
  min-height: 220px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: #fafafa;
  text-align: center;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin: 10px 0;
  background: #fff;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
  padding: 14px 16px;
}

.faq-list details p {
  padding: 0 16px 16px;
  margin: 0;
}

@media (max-width: 860px) {
  .auth-shell,
  .form-grid,
  .form-grid.three,
  .metric-grid,
  .detail-grid {
    grid-template-columns: 1fr;
  }

  .topbar,
  .panel-header,
  .list-item {
    align-items: stretch;
    flex-direction: column;
  }
}