:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --panel: #ffffff;
  --panel-soft: #f8fbff;
  --ink: #15202b;
  --muted: #5f6b7c;
  --line: #d7dfeb;
  --line-strong: #c7d2e0;
  --accent: #2563eb;
  --accent-2: #1d4ed8;
  --warn: #b36a00;
  --radius: 8px;
  --shadow: 0 12px 28px rgba(17, 32, 58, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0) 28%),
    linear-gradient(180deg, #f8fafe 0%, var(--bg) 100%);
  color: var(--ink);
  font-family: Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover { text-decoration: underline; }

code, pre {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 12px;
}

code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--panel-soft);
}

pre {
  padding: 14px 16px;
  overflow: auto;
  border-radius: var(--radius);
  background: #0f172a;
  color: #e5eef8;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  align-items: center;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.brand a {
  color: var(--ink);
  font-weight: 800;
  letter-spacing: 0;
}

.brand small {
  color: var(--muted);
  font-size: 12px;
}

.header-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  align-items: center;
  color: var(--muted);
  font-size: 13px;
}

.chip {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--muted);
  white-space: nowrap;
}

.chip strong { color: var(--ink); }

.page-shell {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.page-content {
  padding: 22px 24px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  line-height: 1.78;
  overflow-wrap: anywhere;
}

.page-content h1 {
  margin: 0 0 14px;
  font-size: 2rem;
  line-height: 1.06;
}

.page-content h2 {
  margin: 1.6em 0 0.55em;
  padding: 0.28em 0.65em;
  border-left: 4px solid var(--accent);
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.08);
  font-size: 1.25rem;
}

.page-content h3 {
  margin: 1.25em 0 0.45em;
  color: var(--accent);
  font-size: 1.05rem;
}

.page-content p { margin: 0.65em 0; }

.page-content ul,
.page-content ol {
  padding-inline-start: 1.4em;
}

.page-content li { margin: 0.3em 0; }

.page-content table {
  display: block;
  width: 100%;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 1em 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-content th,
.page-content td {
  padding: 0.68em 0.78em;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.page-content th {
  background: rgba(37, 99, 235, 0.08);
  font-weight: 700;
}

.page-content blockquote {
  margin: 1em 0;
  padding: 0.85em 1em;
  border-left: 4px solid var(--accent-2);
  border-radius: var(--radius);
  background: #f7fbff;
}

.callout {
  margin: 1em 0;
  border: 1px solid var(--line);
  border-left-width: 4px;
  border-radius: var(--radius);
  background: var(--panel);
}

.callout-tip { border-left-color: var(--accent); }
.callout-summary { border-left-color: var(--accent-2); }
.callout-warning { border-left-color: var(--warn); }

.callout-title {
  padding: 0.75em 0.95em;
  border-bottom: 1px solid var(--line);
  background: var(--panel-soft);
  font-weight: 800;
}

.callout-content { padding: 0.85em 0.95em; }

.embed {
  margin: 1em 0;
}

.embed-image {
  display: grid;
  gap: 8px;
  justify-items: center;
}

.embed-image img {
  display: block;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.14);
}

.embed-audio audio,
.embed-pdf object {
  width: 100%;
}

.asset-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.7em 0.9em;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
}

.asset-link::before {
  content: "↗";
  color: var(--accent-2);
  font-weight: 800;
}

.source-note {
  margin-top: 18px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.source-note a { color: var(--accent-2); }

.page-content hr {
  border: none;
  height: 1px;
  margin: 1.6em 0;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.page-content .overall-topic {
  margin: 0 0 1em;
}

.page-content .overall-topic .callout-content {
  padding: 0;
}

.overall-topic > .callout-title {
  display: none;
}

.page-content .daily-index-shell {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.daily-index-intro {
  display: grid;
  gap: 10px;
}

.daily-index-tabs {
  position: sticky;
  top: 72px;
  z-index: 25;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px 0 12px;
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(255, 255, 255, 0.82));
  backdrop-filter: blur(12px);
}

.daily-index-tab {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--muted);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.daily-index-tab.is-active {
  border-color: var(--accent);
  background: rgba(12, 122, 117, 0.12);
  color: var(--accent);
}

.daily-index-panels {
  display: grid;
}

.daily-index-panel {
  display: none;
}

.daily-index-panel.is-active {
  display: block;
}

.daily-index-panel > h2:first-child {
  margin-top: 0.25em;
}

.overall-topic-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(340px, 0.82fr);
  gap: 18px;
  align-items: start;
}

.overall-topic-grid.single-column {
  grid-template-columns: 1fr;
}

.overall-topic-main,
.overall-topic-reports {
  min-width: 0;
}

.overall-topic-main {
  overflow-wrap: anywhere;
}

.overall-topic-reports {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(12, 122, 117, 0.03), rgba(47, 100, 200, 0.02));
}

.overall-topic-grid.single-column .overall-topic-reports {
  padding-left: 0;
  border-left: 0;
}

.overall-topic-reports > h3:first-child {
  margin-top: 0;
}

.overall-topic-reports-list {
  display: grid;
  gap: 8px;
  margin: 0.35em 0 0;
}

.overall-topic-report-item {
  padding: 0 0 8px;
  border-bottom: 1px solid rgba(215, 223, 235, 0.85);
}

.overall-topic-report-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.overall-topic-report-link,
.overall-topic-report-text {
  display: block;
  color: var(--ink);
  font-size: 1rem;
  line-height: 1.45;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.overall-topic-report-link:hover {
  color: var(--accent-2);
}

.overall-topic-reports > ul {
  margin: 0.45em 0 1em;
  padding-inline-start: 1.2em;
}

.overall-topic-reports h4 {
  margin-top: 1em;
}

.overall-topic-reports p,
.overall-topic-reports ul,
.overall-topic-reports ol {
  margin-top: 0.45em;
}

@media (max-width: 980px) {
  .overall-topic-grid {
    grid-template-columns: 1fr;
  }

  .overall-topic-reports {
    padding-left: 0;
    border-left: 0;
    padding-top: 12px;
    border-top: 1px solid var(--line);
  }
}

.home-shell {
  width: min(1240px, calc(100vw - 24px));
}

.home-content {
  padding: 18px 18px 22px;
}

.home-hero {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-end;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.home-hero h1 {
  margin: 0;
  font-size: 1.9rem;
  line-height: 1.12;
}

.home-hero p {
  margin: 0.55em 0 0;
  max-width: 72ch;
  color: var(--muted);
}

.home-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.home-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin: 18px 0 20px;
}

.stat-card {
  padding: 14px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-soft);
}

.stat-card span {
  display: block;
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 12px;
}

.stat-card strong {
  font-size: 1.5rem;
  line-height: 1;
}

.feed-list {
  display: grid;
  gap: 12px;
}

.feed-item {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.feed-item[open] {
  border-color: var(--line-strong);
}

.feed-item summary {
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  padding: 14px 16px;
  background: linear-gradient(180deg, #ffffff, #fbfdff);
  cursor: pointer;
}

.feed-item summary::-webkit-details-marker {
  display: none;
}

.feed-item summary::after {
  content: "▾";
  color: var(--muted);
  transition: transform 0.2s ease;
}

.feed-item[open] summary::after {
  transform: rotate(180deg);
}

.feed-summary-main {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.feed-date {
  color: var(--accent-2);
  font-size: 12px;
  font-weight: 800;
}

.feed-summary-main strong {
  font-size: 1.05rem;
  line-height: 1.35;
}

.feed-summary-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.feed-badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-soft);
  color: var(--muted);
  white-space: nowrap;
  font-size: 12px;
}

.feed-body {
  padding: 0 16px 16px;
  border-top: 1px solid var(--line);
}

.feed-intro {
  margin: 12px 0 0;
  color: var(--muted);
}

.feed-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.feed-topic-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.chip-link {
  color: var(--accent-2);
  background: #f4f8ff;
}

.feed-preview {
  margin-top: 12px;
  color: var(--muted);
  line-height: 1.7;
}

.feed-preview p {
  margin: 0.5em 0 0;
}

.feed-preview p:first-child {
  margin-top: 0;
}

body.page-home .source-note {
  display: none;
}

@media (max-width: 760px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .header-meta {
    justify-content: flex-start;
  }

  .page-shell {
    width: min(100vw - 24px, 1180px);
  }

  .page-content {
    padding: 18px 16px 22px;
  }

  .home-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .home-hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .home-hero-actions {
    justify-content: flex-start;
  }

  .feed-item summary {
    flex-direction: column;
    align-items: flex-start;
  }

  .feed-summary-meta {
    justify-content: flex-start;
  }
}