/* Labs landing page — compact, editorial, and responsive. */
.labs-hub-page,
.labs-hub-page * {
  box-sizing: border-box;
}

.labs-hub-page {
  max-width: 1320px;
  overflow: hidden;
  width: 100%;
}

.labs-hub-page .labs-hub-hero {
  gap: clamp(2rem, 4vw, 4rem);
  grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr);
  padding: clamp(2rem, 4.5vw, 4rem);
}

.labs-hub-page .labs-hub-hero h1 {
  font-size: clamp(2.6rem, 5vw, 4.35rem);
  letter-spacing: -.04em;
  line-height: 1.02;
}

.labs-hub-page .labs-pathfinder {
  min-width: 0;
}

.labs-hub-page .labs-pathfinder span {
  text-align: right;
}

.labs-hub-page .labs-discovery {
  overflow: hidden;
}

.labs-section {
  margin-top: clamp(2.75rem, 6vw, 5rem);
}

.labs-section-heading {
  align-items: end;
  display: flex;
  gap: 2rem;
  justify-content: space-between;
  margin-bottom: 1.35rem;
}

.labs-section-heading > div {
  max-width: 690px;
}

.labs-kicker {
  color: var(--hub-teal);
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .14em;
  margin: 0 0 .45rem;
  text-transform: uppercase;
}

.labs-section-heading h2,
.labs-workflow-card h2,
.labs-toolkit-card h2,
.labs-checklist h2 {
  color: var(--text-primary);
  font-size: clamp(1.7rem, 3vw, 2.45rem);
  letter-spacing: -.025em;
  line-height: 1.12;
  margin: 0;
}

.labs-section-heading p:not(.labs-kicker),
.labs-checklist-copy > p:last-child {
  color: var(--text-secondary);
  line-height: 1.65;
  margin: .55rem 0 0;
}

.labs-text-link {
  align-items: center;
  color: var(--hub-teal);
  display: inline-flex;
  flex: 0 0 auto;
  font-size: .88rem;
  font-weight: 800;
  gap: .55rem;
  padding: .55rem 0;
  text-decoration: none;
}

.labs-text-link:hover i,
.latest-guide-link:hover i {
  transform: translateX(4px);
}

.labs-text-link i,
.latest-guide-link i {
  font-size: .72rem;
  transition: transform .2s ease;
}

.labs-hub-page .labs-protocol-grid {
  gap: 1rem;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
}

.labs-hub-page .protocol-card {
  border-radius: 1rem;
  min-height: 0;
  overflow: hidden;
  padding: 1.25rem;
  position: relative;
}

.protocol-card::before {
  background: var(--protocol-color, var(--hub-teal));
  content: "";
  height: 3px;
  inset: 0 0 auto;
  position: absolute;
}

.protocol-ospf { --protocol-color: #21b9a8; }
.protocol-eigrp { --protocol-color: #4f8cff; }
.protocol-rip { --protocol-color: #f0a84d; }
.protocol-bgp { --protocol-color: #a67af4; }

.protocol-card-head {
  align-items: center;
  display: flex;
  justify-content: space-between;
  margin-bottom: 1.2rem;
}

.protocol-icon {
  align-items: center;
  background: color-mix(in srgb, var(--protocol-color) 13%, transparent);
  border: 1px solid color-mix(in srgb, var(--protocol-color) 24%, transparent);
  border-radius: .8rem;
  color: var(--protocol-color);
  display: inline-flex;
  font-size: 1.15rem;
  height: 44px;
  justify-content: center;
  width: 44px;
}

.protocol-level {
  color: var(--text-muted);
  font-size: .66rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.labs-hub-page .protocol-card h2 {
  font-size: 1.45rem;
  margin-bottom: .45rem;
}

.labs-hub-page .protocol-card > p {
  font-size: .88rem;
  min-height: 5.4em;
}

.protocol-topics {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem;
  list-style: none;
  margin: .8rem 0 1rem;
  padding: 0;
}

.protocol-topics li {
  background: var(--bg-secondary);
  border: 1px solid var(--hub-line);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: .68rem;
  font-weight: 750;
  padding: .3rem .55rem;
}

.labs-hub-page .protocol-card .hub-link-list {
  gap: .45rem;
  padding-top: 0;
}

.labs-hub-page .protocol-card .hub-link-list a {
  border: 0;
  border-radius: .55rem;
  color: var(--text-secondary);
  font-size: .78rem;
  min-height: 39px;
  padding: .55rem .65rem;
}

.labs-hub-page .protocol-card .hub-link-list a:hover {
  background: var(--hub-soft);
  color: var(--hub-teal);
}

.labs-hub-page .protocol-card .hub-link-list .primary-lab-link {
  background: color-mix(in srgb, var(--protocol-color) 11%, var(--bg-card));
  color: var(--protocol-color);
  font-weight: 850;
}

.labs-hub-page .protocol-card .hub-link-list li a::after {
  content: "\2192";
}

.latest-guides-section {
  background:
    radial-gradient(circle at 90% 10%, color-mix(in srgb, var(--hub-teal) 10%, transparent), transparent 22rem),
    var(--bg-secondary);
  border: 1px solid var(--hub-line);
  border-radius: 1.35rem;
  padding: clamp(1.4rem, 3vw, 2.25rem);
}

.latest-labs-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.latest-guide-card {
  background: var(--bg-card);
  border: 1px solid var(--hub-line);
  border-radius: .9rem;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 1.25rem;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.latest-guide-card:hover {
  border-color: var(--hub-teal);
  box-shadow: 0 16px 36px rgba(8, 28, 44, .1);
  transform: translateY(-3px);
}

.latest-guide-meta {
  align-items: center;
  color: var(--text-muted);
  display: flex;
  font-size: .7rem;
  justify-content: space-between;
}

.latest-guide-meta span {
  color: var(--hub-teal);
  font-weight: 850;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.latest-guide-icon {
  align-items: center;
  background: var(--hub-soft);
  border-radius: .75rem;
  color: var(--hub-teal);
  display: flex;
  height: 46px;
  justify-content: center;
  margin: 1.2rem 0 1rem;
  width: 46px;
}

.latest-guide-card h3 {
  font-size: 1.08rem;
  line-height: 1.35;
  margin: 0;
}

.latest-guide-card h3 a {
  color: var(--text-primary);
  text-decoration: none;
}

.latest-guide-card p {
  color: var(--text-secondary);
  font-size: .82rem;
  line-height: 1.6;
  margin: .65rem 0 1.15rem;
}

.latest-guide-link {
  align-items: center;
  color: var(--hub-teal);
  display: inline-flex;
  font-size: .78rem;
  font-weight: 850;
  gap: .45rem;
  margin-top: auto;
  text-decoration: none;
}

.labs-support-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
  margin-top: clamp(2.75rem, 6vw, 5rem);
}

.labs-workflow-card,
.labs-toolkit-card,
.labs-checklist {
  background: var(--bg-card);
  border: 1px solid var(--hub-line);
  border-radius: 1.1rem;
  padding: clamp(1.4rem, 3vw, 2rem);
}

.labs-workflow-intro {
  color: var(--text-secondary);
  line-height: 1.65;
  margin: .65rem 0 1.5rem;
  max-width: 680px;
}

.labs-workflow {
  display: grid;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.labs-workflow li {
  display: grid;
  gap: 1rem;
  grid-template-columns: 38px minmax(0, 1fr);
  padding: .8rem 0;
  position: relative;
}

.labs-workflow li:not(:last-child)::after {
  background: var(--hub-line);
  content: "";
  height: calc(100% - 32px);
  left: 18px;
  position: absolute;
  top: 42px;
  width: 1px;
}

.labs-workflow li > span {
  align-items: center;
  background: var(--hub-soft);
  border: 1px solid var(--hub-line);
  border-radius: 50%;
  color: var(--hub-teal);
  display: flex;
  font-size: .65rem;
  font-weight: 900;
  height: 38px;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.labs-workflow strong {
  color: var(--text-primary);
  display: block;
  font-size: .92rem;
  margin-top: .1rem;
}

.labs-workflow p {
  color: var(--text-muted);
  font-size: .78rem;
  line-height: 1.5;
  margin: .2rem 0 0;
}

.labs-tool-links {
  display: grid;
  gap: .55rem;
  margin: 1.35rem 0 1rem;
}

.labs-tool-links a {
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--hub-line);
  border-radius: .75rem;
  color: var(--hub-teal);
  display: grid;
  gap: .75rem;
  grid-template-columns: 32px minmax(0, 1fr) auto;
  padding: .85rem;
  text-decoration: none;
  transition: border-color .2s ease, transform .2s ease;
}

.labs-tool-links a:hover {
  border-color: var(--hub-teal);
  transform: translateX(3px);
}

.labs-tool-links a > i:first-child {
  text-align: center;
}

.labs-tool-links a > i:last-child {
  font-size: .68rem;
}

.labs-tool-links strong,
.labs-tool-links small {
  display: block;
}

.labs-tool-links strong {
  color: var(--text-primary);
  font-size: .84rem;
}

.labs-tool-links small {
  color: var(--text-muted);
  font-size: .7rem;
  line-height: 1.45;
  margin-top: .12rem;
}

.labs-all-tools {
  border-color: var(--hub-line);
  justify-content: center;
  width: 100%;
}

.labs-checklist {
  align-items: center;
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(260px, .8fr) minmax(0, 1.2fr);
  margin-top: 1rem;
}

.labs-checklist ul {
  display: grid;
  gap: .55rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  list-style: none;
  margin: 0;
  padding: 0;
}

.labs-checklist li {
  align-items: center;
  background: var(--bg-secondary);
  border: 1px solid var(--hub-line);
  border-radius: .7rem;
  color: var(--text-secondary);
  display: flex;
  font-size: .78rem;
  gap: .65rem;
  min-height: 48px;
  padding: .65rem .75rem;
}

.labs-checklist li i {
  align-items: center;
  background: color-mix(in srgb, var(--hub-teal) 15%, transparent);
  border-radius: 50%;
  color: var(--hub-teal);
  display: flex;
  flex: 0 0 24px;
  font-size: .6rem;
  height: 24px;
  justify-content: center;
}

.labs-checklist li strong {
  color: var(--text-primary);
}

@media (max-width: 1100px) {
  .labs-hub-page .labs-hub-hero,
  .labs-support-grid,
  .labs-checklist {
    grid-template-columns: 1fr;
  }

  .labs-hub-page .labs-protocol-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .labs-hub-page .protocol-card > p {
    min-height: 0;
  }
}

@media (max-width: 760px) {
  .labs-section-heading {
    align-items: flex-start;
    flex-direction: column;
    gap: .55rem;
  }

  .latest-labs-grid {
    grid-template-columns: 1fr;
  }

  .labs-checklist ul {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .labs-hub-page {
    margin-top: 1rem;
  }

  .labs-hub-page .labs-hub-hero h1 {
    font-size: clamp(2.15rem, 11vw, 3rem);
  }

  .labs-hub-page .labs-protocol-grid {
    grid-template-columns: 1fr;
  }

  .labs-hub-page .labs-discovery {
    padding: 1rem;
  }

  .latest-guides-section,
  .labs-workflow-card,
  .labs-toolkit-card,
  .labs-checklist {
    border-radius: .9rem;
  }
}