:root {
  color-scheme: light;
  --bg: #f6f7f3;
  --ink: #1f2725;
  --muted: #5e6865;
  --line: #d9ded7;
  --panel: #ffffff;
  --panel-2: #eef3f1;
  --accent: #006d77;
  --accent-dark: #164a4f;
  --rust: #9a4f2b;
  --olive: #526c2d;
  --violet: #5a557f;
  --soft: #e8f0ed;
  --shadow: 0 18px 45px rgba(31, 39, 37, 0.08);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Microsoft YaHei", sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px clamp(18px, 4vw, 56px);
  border-bottom: 1px solid var(--line);
  background: rgba(246, 247, 243, 0.94);
  backdrop-filter: blur(14px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 260px;
}

.brand > span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--accent-dark);
  color: #fff;
  font-weight: 900;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  line-height: 1.2;
}

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

nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

nav a,
button,
.primary-link,
.secondary-link {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 12px;
  background: var(--panel);
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

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

button {
  width: 100%;
}

.secondary-link {
  color: var(--accent-dark);
  font-weight: 700;
}

main,
footer {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 28px;
  align-items: end;
  padding: 54px 0 34px;
}

.hero-copy h1 {
  max-width: 850px;
  margin: 0 0 16px;
  font-size: clamp(36px, 5.7vw, 72px);
  line-height: 1.05;
  letter-spacing: 0;
}

.hero-copy p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.metrics div {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.metrics strong {
  display: block;
  font-size: clamp(26px, 4vw, 44px);
  line-height: 1;
}

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

.band {
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.section-head,
.results-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-head h2,
.results-head h2 {
  margin: 0;
  font-size: 28px;
  line-height: 1.2;
}

.section-head > span,
#resultCount,
#lastUpdated {
  flex: 0 0 auto;
  border-radius: 999px;
  padding: 6px 10px;
  background: var(--soft);
  color: var(--accent-dark);
  font-size: 13px;
  font-weight: 800;
}

.frontier-lanes,
.topic-map,
.award-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.frontier-card,
.topic-node,
.award-card,
.queue-item,
.filters,
.results {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.frontier-card,
.topic-node,
.award-card {
  min-height: 150px;
  padding: 16px;
}

.frontier-card span,
.award-card span {
  color: var(--rust);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.frontier-card h3,
.topic-node h3,
.award-card h3,
.queue-item h3 {
  margin: 6px 0 8px;
  line-height: 1.3;
}

.frontier-card p,
.topic-node p,
.award-card p,
.queue-item p {
  margin: 0;
  color: var(--muted);
}

.frontier-card strong,
.topic-node span,
.award-card strong {
  display: block;
  margin-top: 12px;
  color: var(--accent-dark);
}

.workspace {
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  gap: 22px;
  align-items: start;
  padding: 42px 0;
  border-top: 1px solid var(--line);
}

.filters {
  position: sticky;
  top: 86px;
  display: grid;
  gap: 16px;
  padding: 18px;
}

.filter-block {
  display: grid;
  gap: 7px;
}

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

input,
select {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
  color: var(--ink);
  font: inherit;
}

.checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox input {
  width: 18px;
  min-height: 18px;
}

.results {
  min-width: 0;
  padding: 22px;
}

.paper-list,
.queue-list {
  display: grid;
  gap: 14px;
}

.paper-card {
  display: grid;
  gap: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.paper-card.read {
  border-color: #b8d7d2;
  background: #fbfefd;
}

.paper-top {
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.paper-card h3 {
  margin: 8px 0 4px;
  font-size: 20px;
  line-height: 1.3;
}

.paper-meta {
  color: var(--muted);
  font-size: 14px;
}

.insight,
.paper-text-block {
  margin: 0;
  border-left: 4px solid var(--rust);
  padding: 10px 12px;
  background: #fbf4ee;
  color: #4b3326;
}

.paper-text-block.conclusion {
  border-left-color: var(--accent);
  background: #edf6f5;
  color: var(--accent-dark);
}

.paper-text-block strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
  font-weight: 900;
  text-transform: uppercase;
}

.paper-text-block p {
  margin: 0;
  font-weight: 650;
}

.summary-grid,
.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.summary-grid div,
.detail-grid div {
  min-width: 0;
  border-left: 3px solid var(--line);
  padding-left: 10px;
}

.summary-grid strong,
.detail-grid strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
}

.summary-grid p,
.detail-grid span {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

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

.tag {
  border-radius: 999px;
  padding: 5px 9px;
  background: #eef2e8;
  color: var(--olive);
  font-size: 12px;
  font-weight: 800;
}

.tag.status {
  background: #e8eef4;
  color: var(--violet);
}

.tag.hot {
  background: #f6e8dc;
  color: var(--rust);
}

.tag.award {
  background: #fff2c4;
  color: #6a4a00;
}

.tag.read {
  background: #dcefeb;
  color: var(--accent-dark);
}

.paper-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.paper-actions div {
  align-items: center;
  display: flex;
  gap: 12px;
}

.paper-actions a {
  color: var(--accent);
  font-weight: 900;
}

.read-toggle {
  width: auto;
  min-height: 0;
  border-color: var(--accent);
  padding: 6px 10px;
  background: #fff;
  color: var(--accent-dark);
  font-size: 14px;
  font-weight: 900;
}

.read-toggle[aria-pressed="true"] {
  background: var(--accent);
  color: #fff;
}

.queue-item {
  display: grid;
  grid-template-columns: 42px 1fr 64px;
  gap: 14px;
  align-items: center;
  padding: 16px;
}

.queue-item > span,
.queue-item > strong {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--soft);
  color: var(--accent-dark);
  font-weight: 900;
}

.queue-item > strong {
  justify-self: end;
  background: var(--accent-dark);
  color: #fff;
}

.workflow ol {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.workflow li {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--panel);
}

.workflow strong,
.workflow span {
  display: block;
}

.workflow strong {
  margin-bottom: 8px;
  font-size: 18px;
}

.workflow span {
  color: var(--muted);
}

.empty {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: var(--panel-2);
  color: var(--muted);
}

footer {
  padding: 32px 0 48px;
  color: var(--muted);
}

footer a {
  color: var(--accent);
  font-weight: 800;
}

@media (max-width: 980px) {
  .topbar,
  .hero,
  .workspace {
    grid-template-columns: 1fr;
  }

  .topbar {
    position: static;
    align-items: flex-start;
  }

  nav {
    justify-content: flex-start;
  }

  .filters {
    position: static;
  }

  .frontier-lanes,
  .topic-map,
  .award-list,
  .summary-grid,
  .detail-grid,
  .workflow ol {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  main,
  footer {
    width: min(100% - 24px, 1180px);
  }

  .brand {
    min-width: 0;
  }

  .metrics,
  .frontier-lanes,
  .topic-map,
  .award-list,
  .summary-grid,
  .detail-grid,
  .workflow ol {
    grid-template-columns: 1fr;
  }

  .paper-top,
  .paper-actions,
  .results-head,
  .section-head {
    align-items: flex-start;
    flex-direction: column;
  }

  .queue-item {
    grid-template-columns: 36px 1fr;
  }

  .queue-item > strong {
    justify-self: start;
    grid-column: 2;
  }
}