:root {
  --al-ink: #0b1d3a;
  --al-blue: #1e5bff;
  --al-cyan: #0fa3a3;
  --al-line: #dbe2ec;
  --al-muted: #5d6b80;
  --al-paper: #fbfcff;
}

body,
body.dark {
  --theme: #fbfcff;
  --entry: #ffffff;
  --primary: #0b1d3a;
  --secondary: #5d6b80;
  --tertiary: #eef2f7;
  --content: #1f2937;
  --border: #dbe2ec;
  background: var(--al-paper);
  color: var(--al-ink);
}

.nav {
  max-width: 1120px;
}

.logo-switches {
  display: none;
}

.logo a,
#menu a {
  color: var(--al-ink);
}

#menu {
  gap: 0.35rem;
}

#menu a {
  font-size: 0.92rem;
}

.brand-home {
  width: min(1120px, calc(100vw - 2.5rem));
  max-width: none;
  margin: 0 auto;
  padding: clamp(2.5rem, 7vw, 5.25rem) 1.25rem 3rem;
  color: var(--al-ink);
}

.brand-hero {
  display: grid;
  grid-template-columns: minmax(180px, 260px) 1px minmax(0, 1fr);
  align-items: center;
  gap: clamp(1.6rem, 4vw, 3rem);
  max-width: 860px;
  margin: 0 auto;
}

.brand-mark {
  display: block;
  width: min(24vw, 250px);
  min-width: 170px;
}

.brand-divider,
.brand-rule {
  background: var(--al-line);
}

.brand-divider {
  width: 1px;
  height: 220px;
}

.brand-title-block h1 {
  margin: 0;
  font-family: "Songti SC", "STSong", "Noto Serif CJK SC", serif;
  font-size: clamp(4.5rem, 9vw, 8.5rem);
  font-weight: 700;
  line-height: 0.98;
  color: var(--al-ink);
  white-space: nowrap;
}

.brand-subtitle {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  margin-top: 1rem;
  white-space: nowrap;
}

.brand-en {
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: clamp(2rem, 3.5vw, 3.4rem);
  line-height: 1;
  color: var(--al-ink);
  white-space: nowrap;
}

.brand-cn {
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(1.8rem, 3vw, 2.9rem);
  color: var(--al-cyan);
  white-space: nowrap;
}

.brand-rule {
  width: 1px;
  height: 2.8rem;
}

.brand-title-block p {
  margin: 1.15rem 0 0;
  color: var(--al-muted);
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  letter-spacing: 0.32em;
}

.brand-actions {
  display: flex;
  justify-content: center;
  gap: 0.85rem;
  margin: 2.2rem 0 3rem;
}

.brand-actions a {
  min-width: 8rem;
  padding: 0.78rem 1.15rem;
  border: 1px solid var(--al-line);
  color: var(--al-ink);
  text-align: center;
  background: #fff;
  font-size: 0.95rem;
}

.brand-actions a:hover,
.core-entry-grid a:hover,
.article-grid a:hover,
.latest-list a:hover {
  border-color: var(--al-blue);
  color: var(--al-blue);
}

.site-intro {
  max-width: 780px;
  margin: 0 auto 2.6rem;
  text-align: center;
}

.site-intro p {
  margin: 0;
  color: var(--al-muted);
  font-size: 1.03rem;
  line-height: 1.9;
}

.site-intro p + p {
  margin-top: 0.45rem;
  color: var(--al-ink);
  font-family: "Songti SC", "STSong", serif;
  font-size: 1.12rem;
}

.core-entry-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.8rem;
}

.core-entry-grid a,
.article-grid a {
  display: grid;
  gap: 0.65rem;
  min-height: 136px;
  padding: 1.3rem;
  border: 1px solid var(--al-line);
  background: #fff;
  color: var(--al-ink);
}

.core-entry-grid strong,
.article-grid strong {
  font-family: "Songti SC", "STSong", serif;
  font-size: 1.35rem;
  line-height: 1.35;
}

.core-entry-grid span,
.article-grid em {
  color: var(--al-muted);
  font-style: normal;
  line-height: 1.7;
}

.workflow-panel {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) 1.15fr;
  gap: 1.5rem;
  margin-bottom: 2.8rem;
  padding: 1.5rem;
  border: 1px solid var(--al-line);
  background: #fff;
}

.panel-kicker {
  margin: 0 0 0.8rem;
  color: var(--al-blue);
  font-size: 0.88rem;
  font-weight: 700;
}

.workflow-panel h2,
.section-heading h2 {
  margin: 0;
  color: var(--al-ink);
  font-family: "Songti SC", "STSong", serif;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.18;
}

.workflow-panel p {
  margin-bottom: 0;
  color: var(--al-muted);
  line-height: 1.8;
}

.workflow-panel ol {
  display: grid;
  gap: 0.55rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.workflow-panel li {
  display: grid;
  grid-template-columns: 3rem 1fr;
  align-items: center;
  gap: 0.8rem;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--al-line);
  color: var(--al-ink);
}

.workflow-panel li span {
  display: grid;
  place-items: center;
  height: 2rem;
  color: #fff;
  background: var(--al-ink);
  font-size: 0.8rem;
  font-weight: 700;
}

.article-section {
  margin-bottom: 2.8rem;
}

.section-heading {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.section-heading::before,
.section-heading::after {
  content: "";
  height: 1px;
  flex: 1;
  background: var(--al-line);
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.article-grid a {
  min-height: 170px;
}

.article-grid strong {
  font-size: 1.08rem;
}

.latest-list {
  display: grid;
  border-top: 1px solid var(--al-line);
}

.latest-list a {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: 1rem;
  padding: 0.9rem 0.2rem;
  border-bottom: 1px solid var(--al-line);
  color: var(--al-ink);
}

.latest-list time {
  color: var(--al-muted);
  font-variant-numeric: tabular-nums;
}

.brand-pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--al-line);
  border-bottom: 1px solid var(--al-line);
}

.brand-pillars a {
  display: grid;
  gap: 0.35rem;
  padding: 1.3rem 1rem;
  border-right: 1px solid var(--al-line);
  color: var(--al-ink);
}

.brand-pillars a:last-child {
  border-right: 0;
}

.brand-pillars b {
  font-size: 1.02rem;
}

.brand-pillars span {
  color: var(--al-muted);
  font-size: 0.84rem;
}

@media (max-width: 960px) {
  .core-entry-grid,
  .article-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 760px) {
  .brand-home {
    padding-top: 2.5rem;
  }

  .brand-hero {
    grid-template-columns: 1fr;
    gap: 1rem;
    text-align: center;
  }

  .brand-mark {
    width: 180px;
    min-width: 0;
    margin: 0 auto;
  }

  .brand-divider {
    width: min(300px, 76vw);
    height: 1px;
    margin: 0 auto;
  }

  .brand-title-block h1 {
    font-size: 4.2rem;
  }

  .brand-subtitle {
    justify-content: center;
    flex-wrap: nowrap;
  }

  .brand-en {
    font-size: 2rem;
  }

  .brand-cn {
    font-size: 1.85rem;
  }

  .brand-title-block p {
    letter-spacing: 0.12em;
  }

  .workflow-panel,
  .core-entry-grid,
  .article-grid,
  .brand-pillars {
    grid-template-columns: 1fr;
  }

  .brand-pillars a {
    border-right: 0;
    border-bottom: 1px solid var(--al-line);
  }

  .latest-list a {
    grid-template-columns: 1fr;
    gap: 0.15rem;
  }
}