:root {
  --bg: #faf9f6;
  --bg-card: #ffffff;
  --border: #e5e1d8;
  --text: #2a2a2a;
  --text-muted: #6b6b6b;
  --text-faded: #999;
  --accent: #3b5998;
  --accent-soft: #e8edf5;
  --tier-a: #2d7a3e;
  --tier-b: #b8860b;
  --tier-c: #8e44ad;
  --major: #c0392b;
  --wildcard: #16a085;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
  --radius: 6px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang TC", "Microsoft JhengHei", "Hiragino Sans", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.site-header {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 2rem 0 1.5rem;
}

.site-title {
  margin: 0 0 0.25rem;
  font-size: 1.8rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.site-tagline {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1rem;
  color: var(--accent);
  text-decoration: none;
  font-size: 0.9rem;
}
.back-link:hover { text-decoration: underline; }

.report-meta {
  margin: 0.5rem 0 0;
  color: var(--text-faded);
  font-size: 0.85rem;
}

/* Filters */
.filters {
  margin: 2rem 0 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

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

.filter-row label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex: 1;
  min-width: 140px;
}

.filter-row select,
.filter-row input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-size: 0.95rem;
  font-family: inherit;
}

.filter-row button {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.9rem;
}
.filter-row button:hover { background: var(--accent-soft); }

.filter-stats {
  margin: 0.75rem 0 0;
  font-size: 0.85rem;
  color: var(--text-faded);
}

/* Report list */
.reports-list {
  margin: 2rem 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.report-card {
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  cursor: pointer;
  transition: transform 0.1s, box-shadow 0.1s;
  text-decoration: none;
  color: inherit;
  display: block;
}
.report-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.report-card-date {
  font-size: 0.8rem;
  color: var(--text-faded);
  margin-bottom: 0.25rem;
}

.report-card-title {
  margin: 0 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 600;
}

.report-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 0.5rem;
}

.tag {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 3px;
  font-size: 0.75rem;
}

/* Editorial */
.editorial {
  margin: 2rem 0 1rem;
  padding: 1.5rem 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  border-left: 3px solid var(--accent);
}

.editorial-title {
  margin: 0 0 0.75rem;
  font-size: 1.25rem;
  font-weight: 600;
}

.editorial-summary {
  margin: 0 0 1rem;
  color: var(--text);
}

.editorial-highlights {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
}
.editorial-highlights li {
  padding: 0.4rem 0 0.4rem 1.25rem;
  position: relative;
  font-size: 0.95rem;
}
.editorial-highlights li::before {
  content: "▸";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.editorial-stats {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Report filters */
.report-filters {
  margin: 1.5rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  padding: 0.4rem 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  cursor: pointer;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--text-muted);
}
.chip:hover { background: var(--accent-soft); }
.chip-active {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}
.chip-active:hover { background: var(--accent); }

/* Item-level filter bar (report page) */
.item-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: flex-end;
  margin: 0.75rem 0 1rem;
  padding: 0.85rem 1.1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.ifbar-label {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex: 1;
  min-width: 130px;
}

.ifbar-label select {
  padding: 0.45rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  font-size: 0.9rem;
  font-family: inherit;
}

.item-filter-bar button {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  cursor: pointer;
  font-family: inherit;
  font-size: 0.85rem;
  align-self: flex-end;
}
.item-filter-bar button:hover { background: var(--accent-soft); }

.ifbar-stats {
  font-size: 0.82rem;
  color: var(--accent);
  align-self: flex-end;
  padding-bottom: 0.1rem;
}

/* Items */
.items {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 3rem;
}

.item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.item-header {
  padding: 1rem 1.25rem;
  cursor: pointer;
  user-select: none;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}
.item-header:hover { background: #fafaf7; }

.item-header-content { flex: 1; min-width: 0; }

.item-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.4rem;
  font-size: 0.75rem;
}

.badge {
  padding: 0.1rem 0.5rem;
  border-radius: 3px;
  background: var(--accent-soft);
  color: var(--accent);
}
.badge-major { background: #fce8e6; color: var(--major); }
.badge-wildcard { background: #d1f0e8; color: var(--wildcard); }
.badge-comparison { background: #fff3d4; color: #b8860b; }
.badge-region { background: #eef0f3; color: #444; }

.item-title {
  margin: 0 0 0.3rem;
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.4;
}

.item-one-liner {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.item-toggle {
  flex-shrink: 0;
  color: var(--text-faded);
  font-size: 0.9rem;
  margin-top: 0.2rem;
  transition: transform 0.15s;
}
.item.expanded .item-toggle { transform: rotate(90deg); }

.item-body {
  padding: 0 1.25rem 1.25rem;
  border-top: 1px solid var(--border);
  margin-top: 0;
  display: none;
}
.item.expanded .item-body { display: block; }

.item-summary {
  margin: 1rem 0;
  line-height: 1.75;
}

.item-why-read {
  margin: 1rem 0;
  padding: 0.75rem 1rem;
  background: var(--accent-soft);
  border-radius: var(--radius);
  font-size: 0.92rem;
  color: var(--text);
}
.item-why-read::before {
  content: "為什麼值得看 · ";
  font-weight: 600;
  color: var(--accent);
}

.item-source {
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  align-items: center;
}

.tier-badge {
  display: inline-block;
  padding: 0.1rem 0.4rem;
  border-radius: 3px;
  font-size: 0.7rem;
  font-weight: 600;
  color: white;
}
.tier-A { background: var(--tier-a); }
.tier-B { background: var(--tier-b); }
.tier-C { background: var(--tier-c); }

.source-link {
  color: var(--accent);
  text-decoration: none;
  word-break: break-all;
}
.source-link:hover { text-decoration: underline; }

.item-original-title {
  font-size: 0.85rem;
  color: var(--text-faded);
  font-style: italic;
  margin-top: 0.3rem;
}

/* Comparison */
.comparison-table-wrap {
  overflow-x: auto;
  margin: 1rem 0;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  min-width: 600px;
}

.comparison-table th,
.comparison-table td {
  padding: 0.75rem 0.9rem;
  text-align: left;
  border: 1px solid var(--border);
  vertical-align: top;
}

.comparison-table thead th {
  background: var(--accent-soft);
  font-weight: 600;
  white-space: nowrap;
}

.comparison-table tbody th {
  background: #fafaf7;
  font-weight: 600;
  white-space: nowrap;
}

.comparison-narrative {
  margin: 1rem 0;
  padding: 0;
  line-height: 1.75;
}

.comparison-sources {
  margin: 1rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.comparison-sources h4 {
  margin: 0 0 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}
.comparison-sources ul {
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.comparison-sources li {
  padding: 0.3rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

/* Footer */
.site-footer {
  margin-top: 3rem;
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
}
.site-footer p {
  margin: 0;
  color: var(--text-faded);
  font-size: 0.85rem;
  text-align: center;
}

/* Loading & errors */
.loading {
  text-align: center;
  color: var(--text-faded);
  padding: 2rem 0;
}

.error-block {
  margin: 2rem 0;
  padding: 1.5rem 1.75rem;
  background: #fff5f5;
  border: 1px solid #f5c2c2;
  border-radius: var(--radius);
}
.error-block h2 {
  margin-top: 0;
  color: var(--major);
}
.error-block code {
  background: #fafaf7;
  padding: 0.15rem 0.4rem;
  border-radius: 3px;
  font-size: 0.9em;
}

/* Mobile tweaks */
@media (max-width: 600px) {
  .site-title { font-size: 1.4rem; }
  .filter-row { flex-direction: column; }
  .filter-row label { min-width: auto; width: 100%; }
  .item-header { padding: 0.85rem 1rem; }
  .item-body { padding: 0 1rem 1rem; }
  .container { padding: 0 1rem; }
}

.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-faded);
}
.empty-state strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--text);
}