.about-page {
  padding-top: 28px;
}

.about-hero {
  min-height: 220px;
}

.about-overview-grid {
  margin-top: 20px;
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(340px, 0.75fr);
  gap: 20px;
  align-items: stretch;
}

.about-intro-card,
.snapshot-card,
.conference-section,
.scope-table-card,
.source-card,
.pipeline-card,
.methodology-card,
.formula-card,
.update-card,
.limitation-card,
.faq-card {
  border: 1px solid rgba(220, 231, 227, 0.92);
  border-radius: var(--radius-lg);
  background: #ffffff;
  box-shadow: var(--shadow);
}

.about-copy {
  padding: 0 24px 24px;
}

.about-copy p {
  margin: 0 0 12px;
  color: #526762;
  font-size: 13px;
  line-height: 1.85;
}

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

.boundary-note {
  padding: 11px 13px;
  border-left: 4px solid var(--accent);
  border-radius: 8px;
  color: #8f3d2c !important;
  background: var(--accent-soft);
}

.snapshot-grid {
  padding: 0 21px 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.snapshot-grid > div {
  min-height: 76px;
  padding: 12px;
  border: 1px solid #e3ece9;
  border-radius: 11px;
  background: var(--surface-soft);
}

.snapshot-grid span,
.snapshot-grid strong {
  display: block;
}

.snapshot-grid span {
  color: var(--muted);
  font-size: 11px;
}

.snapshot-grid strong {
  margin-top: 5px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.4;
}

.conference-section,
.split-section,
.pipeline-card,
.methodology-grid,
.faq-card,
.about-cta {
  margin-top: 20px;
}

.conference-grid {
  padding: 0 18px 20px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 13px;
}

.conference-card {
  position: relative;
  min-height: 220px;
  padding: 20px;
  overflow: hidden;
  border: 1px solid #e1ebe8;
  border-radius: 15px;
  background: #fbfdfc;
}

.conference-card::after {
  content: "";
  position: absolute;
  width: 130px;
  height: 130px;
  right: -60px;
  bottom: -75px;
  border-radius: 50%;
  background: var(--primary-soft);
  opacity: 0.75;
}

.conference-code {
  display: inline-block;
  padding: 4px 9px;
  border-radius: 8px;
  color: #ffffff;
  background: var(--primary);
  font-size: 12px;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.iccv-card .conference-code {
  background: var(--accent);
}

.eccv-card .conference-code {
  background: #3e6f9e;
}

.conference-card h3 {
  position: relative;
  z-index: 1;
  min-height: 66px;
  margin: 13px 0 0;
  font-size: 16px;
  line-height: 1.5;
}

.conference-card p {
  position: relative;
  z-index: 1;
  margin: 10px 0;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

.conference-card strong {
  position: relative;
  z-index: 1;
  color: var(--primary-dark);
  font-size: 12px;
}

.split-section {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 20px;
}

.table-scroll {
  padding: 0 18px;
  overflow-x: auto;
}

.scope-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
}

.scope-table th,
.scope-table td {
  padding: 11px 10px;
  border-bottom: 1px solid #e9f0ee;
  text-align: left;
}

.scope-table th {
  color: #526762;
  background: #f5f9f8;
  font-size: 11px;
}

.scope-table td:first-child {
  color: var(--primary-dark);
  font-weight: 800;
}

.table-note {
  margin: 12px 22px 21px;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.7;
}

.source-list {
  padding: 0 22px 10px;
  display: grid;
  gap: 13px;
}

.source-list > div {
  padding-left: 12px;
  border-left: 3px solid #b8ded5;
}

.source-list strong {
  font-size: 13px;
}

.source-list p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.65;
}

.pipeline-list {
  margin: 0;
  padding: 0 20px 22px;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 12px;
  list-style: none;
  counter-reset: pipeline;
}

.pipeline-list li {
  position: relative;
  padding: 16px 13px;
  border: 1px solid #e1eee9;
  border-radius: 13px;
  background: #fbfdfc;
}

.pipeline-list li:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -12px;
  color: #a6c8c0;
  font-size: 15px;
  transform: translateY(-50%);
}

.pipeline-list span,
.pipeline-list strong,
.pipeline-list small {
  display: block;
}

.pipeline-list span {
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #ffffff;
  background: var(--primary);
  font-size: 11px;
  font-weight: 800;
}

.pipeline-list strong {
  margin-top: 10px;
  font-size: 12px;
}

.pipeline-list small {
  margin-top: 5px;
  color: var(--muted);
  font-size: 10px;
  line-height: 1.55;
}

.methodology-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.check-list {
  margin: 0;
  padding: 0 24px 24px;
  display: grid;
  gap: 10px;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 23px;
  color: #526762;
  font-size: 12px;
  line-height: 1.75;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: 900;
}

.warning-list li::before {
  content: "!";
  width: 16px;
  height: 16px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: #ffffff;
  background: var(--accent);
  font-size: 10px;
  line-height: 1;
}

.formula-card {
  background:
    radial-gradient(circle at 90% 5%, rgba(8, 127, 111, 0.08), transparent 14rem),
    #ffffff;
}

.formula-card > p {
  margin: 15px 24px 0;
  color: #526762;
  font-size: 12px;
  line-height: 1.75;
}

.formula-box {
  margin: 0 24px;
  padding: 18px 19px;
  border: 1px solid #b9dfd5;
  border-radius: 13px;
  color: var(--primary-dark);
  background: var(--primary-soft);
  font-size: 17px;
  line-height: 1.55;
}

.formula-example {
  margin-bottom: 24px !important;
  color: var(--muted) !important;
}

.faq-list {
  padding: 0 22px 22px;
  display: grid;
  gap: 9px;
}

.faq-list details {
  border: 1px solid #e2ece9;
  border-radius: 11px;
  background: #fbfdfc;
}

.faq-list summary {
  padding: 13px 15px;
  color: #405751;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
}

.faq-list details p {
  margin: 0;
  padding: 0 15px 14px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.75;
}

.about-cta {
  padding: 21px 23px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  border-radius: 17px;
  color: #ffffff;
  background: linear-gradient(115deg, #0a4b42, #0b806e);
  box-shadow: var(--shadow);
}

.about-cta > div:first-child {
  display: grid;
  gap: 3px;
}

.about-cta strong {
  font-size: 17px;
}

.about-cta span {
  color: rgba(255, 255, 255, 0.75);
  font-size: 12px;
}

.about-cta > div:last-child {
  display: flex;
  gap: 9px;
}

.about-cta .button.primary {
  color: var(--primary-dark);
  background: #ffffff;
}

.about-cta .button.ghost {
  border-color: rgba(255, 255, 255, 0.26);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.1);
}

@media (max-width: 980px) {
  .about-overview-grid,
  .split-section,
  .methodology-grid {
    grid-template-columns: 1fr;
  }

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

  .conference-card {
    min-height: 0;
  }

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

  .pipeline-list li:nth-child(3)::after,
  .pipeline-list li:nth-child(6)::after {
    display: none;
  }
}

@media (max-width: 720px) {
  .snapshot-grid,
  .pipeline-list {
    grid-template-columns: 1fr;
  }

  .pipeline-list li:not(:last-child)::after {
    content: "↓";
    top: auto;
    right: 50%;
    bottom: -17px;
    display: block;
    transform: translateX(50%);
  }

  .about-cta {
    align-items: flex-start;
    flex-direction: column;
  }

  .about-cta > div:last-child {
    width: 100%;
  }

  .about-cta .button {
    flex: 1;
    text-align: center;
  }
}