:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --surface: #ffffff;
  --surface-strong: #eef4f3;
  --text: #17201d;
  --muted: #65736e;
  --line: #dce4e1;
  --accent: #0f766e;
  --accent-ink: #063f3a;
  --amber: #a66300;
  --blue: #2563eb;
  --rose: #be123c;
  --shadow: 0 18px 45px rgba(23, 32, 29, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, "Microsoft YaHei", "PingFang SC", system-ui, sans-serif;
}

button,
input,
select {
  font: inherit;
}

.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(245, 247, 248, 0.92);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: white;
  font-weight: 800;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  font-size: 22px;
  line-height: 1.15;
}

.brand p,
.meta-label,
.section-head span,
.news-meta,
.source-list,
.metric span {
  color: var(--muted);
}

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

select,
input {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--text);
}

select {
  padding: 0 34px 0 12px;
}

input {
  width: 100%;
  padding: 0 12px;
}

.icon-button,
.filter-button,
.priority-button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--text);
  cursor: pointer;
}

.icon-button {
  padding: 0 14px;
  font-weight: 700;
}

.layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 24px 28px 48px;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel,
.briefing,
.summary-strip {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.panel {
  padding: 18px;
}

.panel h2,
.section-head h2,
.briefing h2 {
  font-size: 16px;
}

.filter-list {
  display: grid;
  gap: 8px;
  margin-top: 14px;
}

.filter-button {
  display: flex;
  justify-content: space-between;
  width: 100%;
  padding: 0 12px;
  color: var(--muted);
}

.filter-button.active,
.priority-button.active {
  border-color: var(--accent);
  background: var(--surface-strong);
  color: var(--accent-ink);
  font-weight: 700;
}

.source-list {
  display: grid;
  gap: 10px;
  margin-top: 14px;
  font-size: 14px;
}

.source-item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.content {
  display: grid;
  gap: 20px;
}

.summary-strip {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  padding: 24px;
  background: linear-gradient(135deg, #ffffff 0%, #edf6f4 100%);
}

.meta-label {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 13px;
  font-weight: 700;
}

#leadTitle {
  max-width: 850px;
  font-size: 28px;
  line-height: 1.25;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, 92px);
  gap: 10px;
  align-items: stretch;
}

.metrics div {
  display: grid;
  place-items: center;
  min-height: 78px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.74);
  text-align: center;
}

.metrics strong {
  font-size: 24px;
}

.metrics span {
  font-size: 12px;
}

.briefing {
  padding: 22px 24px;
}

.section-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 14px;
}

.briefing ol {
  display: grid;
  gap: 12px;
  margin: 0;
  padding-left: 20px;
}

.briefing li {
  line-height: 1.7;
}

.toolbar {
  display: grid;
  grid-template-columns: minmax(240px, 1fr) auto;
  gap: 14px;
  align-items: end;
}

.search-box {
  display: grid;
  gap: 7px;
}

.search-box label {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.segmented {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.priority-button {
  padding: 0 13px;
}

.news-list {
  display: grid;
  gap: 14px;
}

.news-card {
  display: grid;
  gap: 12px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.news-card header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.news-card h3 {
  font-size: 18px;
  line-height: 1.35;
}

.news-meta,
.tag-row,
.link-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.news-meta {
  font-size: 13px;
}

.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 9px;
  border-radius: 999px;
  background: #eef2f7;
  color: #344054;
  font-size: 12px;
  font-weight: 700;
}

.priority-high {
  background: #fff1f2;
  color: var(--rose);
}

.priority-medium {
  background: #fff7ed;
  color: var(--amber);
}

.priority-low {
  background: #eff6ff;
  color: var(--blue);
}

.news-card p {
  color: #34423d;
  line-height: 1.75;
}

.why {
  padding: 12px 14px;
  border-left: 3px solid var(--accent);
  background: var(--surface-strong);
  color: var(--accent-ink);
  line-height: 1.7;
}

.link-row a {
  color: var(--accent);
  font-weight: 700;
  text-decoration: none;
}

.link-row a:hover {
  text-decoration: underline;
}

.empty-state {
  padding: 32px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  background: white;
  color: var(--muted);
  text-align: center;
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  transform: translateY(16px);
  opacity: 0;
  pointer-events: none;
  border-radius: 8px;
  background: var(--text);
  color: white;
  padding: 12px 14px;
  transition: 0.2s ease;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

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

  .sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .summary-strip,
  .toolbar {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 640px) {
  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
    padding: 16px;
  }

  .top-actions,
  .top-actions select,
  .icon-button {
    width: 100%;
  }

  .layout {
    padding: 16px;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  #leadTitle {
    font-size: 22px;
  }

  .metrics {
    grid-template-columns: 1fr;
  }

  .news-card header,
  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }
}