.about {
  padding-top: 32px;
}

/* Primary navigation refinement */
.site-header { gap: 26px; }
.brand img { width: 190px; max-height: 50px; }
.site-header nav { gap: 18px; font-size: 14px; }
.site-header nav a { position: relative; white-space: nowrap; }
.site-header nav a[aria-current="page"] { color: var(--g); }
.site-header nav a[aria-current="page"]::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -9px;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--g);
}
.site-header a:focus-visible,
.nav-toggle:focus-visible { outline: 3px solid rgba(15, 107, 77, .28); outline-offset: 4px; }
.nav-toggle { display: none; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 1200px) and (min-width: 1001px) {
  .brand img { width: 170px; }
}

.about-intro {
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  gap: 90px;
  align-items: start;
  padding: 58px;
  border-radius: 28px;
  background: var(--gs);
}

.about h2 {
  margin: 0;
  font-size: clamp(38px, 4.5vw, 58px);
  line-height: 1.14;
  letter-spacing: -.04em;
}

.about-copy p {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.9;
}

.about-copy p:last-child { margin-bottom: 0; }

.about-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(15, 107, 77, .18);
}

.about-facts span {
  padding: 24px 18px 0 0;
  color: var(--g);
  font-size: 13px;
  font-weight: 800;
}

.article-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.article-list li { border-top: 1px solid var(--line); }
.article-list li:last-child { border-bottom: 1px solid var(--line); }
.article-list a {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  color: var(--ink);
  font-size: 14px;
  font-weight: 750;
  line-height: 1.55;
}
.article-list a:hover { color: var(--g); }
.content-card small {
  margin-top: 16px;
  color: var(--muted);
  line-height: 1.6;
}

/* Launch refinement: four focused services and three verified content channels */
.entry-strip .shell {
  grid-template-columns: repeat(4, 1fr);
}

.entry-strip a:first-child { border-left: 1px solid rgba(255,255,255,.15); }

.entry-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.entry-card,
.entry-card:nth-child(4),
.entry-card:nth-child(5) {
  grid-column: auto;
  min-height: 276px;
  padding: 30px;
  border-color: rgba(15, 107, 77, .16);
  transition: transform .18s ease, border-color .18s ease, box-shadow .18s ease;
}

.entry-card:hover {
  transform: translateY(-2px);
  border-color: rgba(15, 107, 77, .34);
  box-shadow: 0 16px 42px rgba(7, 63, 49, .08);
}

.entry-card:focus-visible,
.content-card a:focus-visible,
.beian-link:focus-visible {
  outline: 3px solid rgba(15, 107, 77, .28);
  outline-offset: 4px;
}

.entry-card h3 {
  margin-top: 38px;
  font-size: clamp(22px, 2vw, 26px);
  line-height: 1.3;
  letter-spacing: -.025em;
}

.entry-card p {
  max-width: 34em;
  font-size: 15px;
  line-height: 1.85;
}

.content-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.content-card {
  min-height: 300px;
  padding: 30px;
  border-color: rgba(15, 107, 77, .16);
}

.content-card h3 {
  margin-top: 36px;
  font-size: 23px;
  line-height: 1.35;
}

.content-card p,
.content-card small {
  font-size: 14px;
  line-height: 1.8;
}

.content-card > a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  font-weight: 800;
}

.beian-link {
  color: #c5d7cf;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.beian-link:hover { color: #fff; }

.price-note {
  color: var(--g);
  font-weight: 800;
}

.role-compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 28px 0 10px;
}

.role-compare article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
}

.role-compare span {
  color: var(--g);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .05em;
}

.role-compare h3 {
  margin: 22px 0 10px;
  font-size: 20px;
  line-height: 1.4;
}

.role-compare p { margin: 0; font-size: 14px; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .entry-card { transition: none; }
  .entry-card:hover { transform: none; }
}

@media (max-width: 1000px) {
  .site-header { gap: 18px; }
  .brand img { width: 150px; }
  .site-header nav {
    display: none;
    position: absolute;
    top: 76px;
    right: 4vw;
    left: 4vw;
    padding: 12px;
    gap: 0;
    flex-direction: column;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: rgba(255,255,255,.98);
    box-shadow: var(--shadow);
  }
  .site-header nav.is-open { display: flex; }
  .site-header nav a { padding: 13px 14px; border-radius: 10px; }
  .site-header nav a:hover { background: var(--gs); }
  .site-header nav a[aria-current="page"]::after { display: none; }
  .nav-toggle {
    display: inline-flex;
    width: 44px;
    height: 44px;
    padding: 11px;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    border: 1px solid var(--line);
    border-radius: 50%;
    background: #fff;
  }
  .nav-toggle span:not(.sr-only) { width: 100%; height: 2px; border-radius: 2px; background: var(--ink); }
  .about-intro { grid-template-columns: 1fr; gap: 34px; padding: 42px; }
  .about-facts { grid-template-columns: 1fr 1fr; }
  .entry-strip .shell { grid-template-columns: repeat(2, 1fr); }
  .content-grid { grid-template-columns: 1fr 1fr; }
  .role-compare { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .brand img { width: 132px; }
  .site-header nav { top: 66px; right: 18px; left: 18px; }
  .header-cta { display: none; }
  .about { padding-top: 10px; }
  .about-intro { padding: 30px 24px; }
  .about-facts { grid-template-columns: 1fr; }
  .about-facts span { padding-top: 16px; }
  .entry-grid,
  .entry-strip .shell,
  .content-grid { grid-template-columns: 1fr; }
  .entry-card { min-height: 250px; padding: 26px 24px; }
  .content-card { min-height: 250px; padding: 26px 24px; }
}