.page-about {
  --about-radius: 16px;
  --about-radius-sm: 12px;
  --about-shadow: 0 14px 40px rgba(15, 23, 42, 0.08);
  --about-border: 1px solid var(--c-gray-200);
  background: var(--c-snow);
  color: var(--c-ink);
  font-family: var(--font-body);
  line-height: 1.6;
}

.page-about section {
  padding: 3rem 1.25rem;
}

.page-about .content-container {
  max-width: var(--content-max);
  margin-inline: auto;
}

.page-about .chapter-label {
  color: var(--c-blue-800);
  letter-spacing: 0.06em;
  font-weight: 600;
}

.page-about .about-section-head {
  margin-bottom: 2rem;
}

.page-about .about-section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  color: var(--c-blue-900);
  margin: 0.5rem 0 0;
  line-height: 1.2;
}

.page-about .about-hero {
  background:
    radial-gradient(1200px 400px at 85% -20%, rgba(59, 130, 246, 0.18), transparent 60%),
    linear-gradient(180deg, rgba(30, 64, 175, 0.08), transparent 320px),
    var(--c-snow);
  padding-block: 2rem 3rem;
}

.page-about .about-hero__inner {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  line-height: 1.12;
  color: var(--c-blue-900);
  margin: 0.75rem 0 1.25rem;
}

.page-about .about-hero__title-main,
.page-about .about-hero__title-sub {
  display: block;
}

.page-about .about-hero__title-sep {
  display: none;
}

.page-about .about-hero__title-main::after {
  content: "";
  display: block;
  width: 3rem;
  height: 3px;
  background: var(--c-orange);
  margin: 0.75rem 0;
}

.page-about .about-hero__lead {
  font-size: 1.0625rem;
  color: #334155;
  max-width: 36rem;
  margin: 0;
}

.page-about .about-mission__link,
.page-about .about-trust__link {
  color: var(--c-blue-500);
  text-decoration: underline;
  text-underline-offset: 0.2em;
  transition: color 0.2s;
}

.page-about .about-mission__link:hover,
.page-about .about-trust__link:hover {
  color: var(--c-orange);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.75rem;
}

.page-about .about-hero__figure {
  margin: 0;
}

.page-about .about-hero__figure img {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: var(--about-radius);
  box-shadow: var(--about-shadow);
}

.page-about .about-mission {
  background: #fff;
}

.page-about .about-mission__grid {
  display: grid;
  gap: 2rem;
}

.page-about .about-mission__lead {
  font-size: 1.0625rem;
  color: #334155;
}

.page-about .about-mission__lead p {
  margin: 0 0 1rem;
}

.page-about .about-mission__trust {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--c-orange);
  background: var(--c-gray-100);
  border-radius: 0 var(--about-radius-sm) var(--about-radius-sm) 0;
  font-weight: 500;
  color: var(--c-ink);
}

.page-about .about-mission__values {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-about .mission-value {
  background: var(--c-snow);
  border: var(--about-border);
  border-radius: var(--about-radius-sm);
  padding: 1.25rem;
  position: relative;
}

.page-about .mission-value__index {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--c-blue-500);
  letter-spacing: 0.08em;
}

.page-about .mission-value h3 {
  margin: 0.5rem 0 0.375rem;
  font-size: 1.125rem;
  color: var(--c-ink);
}

.page-about .mission-value p {
  margin: 0;
  color: #475569;
  font-size: 0.95rem;
}

.page-about .about-journey {
  background: var(--c-snow);
}

.page-about .about-journey__banner {
  margin: 0 0 2rem;
  overflow: hidden;
  border-radius: var(--about-radius);
}

.page-about .about-journey__banner img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.page-about .about-timeline {
  position: relative;
}

.page-about .about-timeline__axis {
  display: none;
}

.page-about .about-timeline__items {
  display: grid;
  gap: 1.25rem;
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: 2rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 0.375rem;
  top: 0.375rem;
  bottom: -1.25rem;
  width: 2px;
  background: repeating-linear-gradient(to bottom, var(--c-blue-500) 0 4px, transparent 4px 10px);
}

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__node {
  position: absolute;
  left: 0;
  top: 0.25rem;
  width: 0.875rem;
  height: 0.875rem;
  border-radius: 50%;
  background: var(--c-blue-800);
  border: 2px solid var(--c-snow);
  box-shadow: 0 0 0 2px var(--c-blue-500);
}

.page-about .about-timeline__version {
  display: none;
}

.page-about .about-timeline__card {
  background: #fff;
  border: var(--about-border);
  border-radius: var(--about-radius-sm);
  padding: 1.25rem;
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.05);
  transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.page-about .about-timeline__item:hover .about-timeline__card {
  box-shadow: var(--about-shadow);
  transform: translateY(-2px);
}

.page-about .about-timeline__card h3 {
  margin: 0.5rem 0 0.375rem;
  font-size: 1.0625rem;
  color: var(--c-blue-900);
}

.page-about .about-timeline__card p {
  margin: 0;
  color: #475569;
  font-size: 0.9375rem;
}

.page-about .about-capability {
  background: #fff;
}

.page-about .about-capability__grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .cap-card {
  background: var(--c-gray-100);
  border: var(--about-border);
  border-radius: var(--about-radius);
  border-top: 3px solid var(--c-blue-500);
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .cap-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--about-shadow);
}

.page-about .cap-card__index {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--c-blue-500);
}

.page-about .cap-card h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  margin: 0.625rem 0 0.5rem;
  color: var(--c-blue-900);
}

.page-about .cap-card p {
  margin: 0 0 0.75rem;
  color: #334155;
  font-size: 0.9375rem;
}

.page-about .cap-card__tags,
.page-about .cap-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.page-about .cap-card__list {
  margin: 0.25rem 0 0;
  padding-left: 1.1rem;
  color: #334155;
  font-size: 0.9375rem;
}

.page-about .cap-card__list li {
  margin-block: 0.25rem;
}

.page-about .cap-card__note {
  font-size: 0.875rem;
  color: #64748b;
  margin-top: 0.75rem;
}

.page-about .about-team {
  background: var(--c-snow);
}

.page-about .about-team__layout {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.page-about .about-team__figure {
  margin: 0;
}

.page-about .about-team__figure img {
  width: 100%;
  height: auto;
  border-radius: var(--about-radius);
  box-shadow: var(--about-shadow);
}

.page-about .about-team__intro p {
  color: #334155;
  margin: 0 0 0.75rem;
}

.page-about .about-team__grid {
  display: grid;
  gap: 1.25rem;
}

.page-about .team-card {
  background: #fff;
  border: var(--about-border);
  border-radius: var(--about-radius);
  padding: 1.5rem;
  outline: none;
}

.page-about .team-card__inner {
  display: grid;
  gap: 1rem;
}

.page-about .team-card__front {
  display: grid;
  justify-items: start;
  gap: 0.375rem;
}

.page-about .team-card__front svg {
  color: var(--c-blue-800);
  margin-bottom: 0.375rem;
}

.page-about .team-card__front h3 {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 800;
  margin: 0;
  color: var(--c-blue-900);
}

.page-about .team-card__role {
  margin: 0;
  color: var(--c-blue-500);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.page-about .team-card__hint {
  display: none;
}

.page-about .team-card__back {
  border-top: 1px dashed var(--c-gray-200);
  padding-top: 1rem;
  color: #334155;
  font-size: 0.9375rem;
}

.page-about .team-card__back p {
  margin: 0;
}

.page-about .about-trust {
  background:
    radial-gradient(900px 320px at 15% 0%, rgba(59, 130, 246, 0.25), transparent 60%),
    var(--c-blue-900);
  color: #e2e8f0;
}

.page-about .about-trust .chapter-label {
  color: #93c5fd;
}

.page-about .about-trust h2 {
  color: var(--c-snow);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin: 0.5rem 0 1rem;
}

.page-about .about-trust__panel {
  display: grid;
  gap: 2rem;
}

.page-about .about-trust__lead {
  color: #cbd5e1;
  max-width: 36rem;
  margin: 0 0 1.25rem;
}

.page-about .about-trust__icp {
  margin: 1.25rem 0;
}

.page-about .about-trust__promises {
  list-style: none;
  margin: 0 0 1.5rem;
  padding: 0;
  display: grid;
  gap: 0.625rem;
}

.page-about .about-trust__promises li {
  position: relative;
  padding-left: 1.4rem;
  color: #cbd5e1;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-about .about-trust__promises li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 0.625rem;
  height: 0.625rem;
  background: var(--c-orange);
  transform: rotate(45deg);
  border-radius: 1px;
}

.page-about .about-trust__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
}

.page-about .about-trust__ghost {
  border-color: rgba(248, 250, 252, 0.55);
  color: var(--c-snow);
}

.page-about .about-trust__side {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-trust__flow,
.page-about .about-trust__links {
  background: rgba(248, 250, 252, 0.06);
  border: 1px solid rgba(248, 250, 252, 0.16);
  border-radius: var(--about-radius);
  padding: 1.5rem;
}

.page-about .about-trust__flow h3,
.page-about .about-trust__links h3 {
  color: var(--c-snow);
  font-size: 1.0625rem;
  margin: 0 0 1rem;
}

.page-about .trust-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.875rem;
}

.page-about .trust-flow__item {
  display: flex;
  gap: 0.875rem;
  align-items: flex-start;
  color: #cbd5e1;
  font-size: 0.9375rem;
  line-height: 1.5;
}

.page-about .trust-flow__item strong {
  color: var(--c-snow);
  font-weight: 600;
}

.page-about .trust-flow__num {
  font-family: var(--font-mono);
  color: var(--c-orange);
  font-weight: 600;
  line-height: 1.4;
}

.page-about .about-trust__links ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-about .about-trust__links a {
  color: #bfdbfe;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s;
}

.page-about .about-trust__links a:hover {
  color: var(--c-snow);
}

@media (min-width: 768px) {
  .page-about section {
    padding: 4.5rem 2rem;
  }

  .page-about .about-hero {
    padding-block: 3rem 5rem;
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3rem;
  }

  .page-about .about-hero__figure {
    order: 2;
  }

  .page-about .about-mission__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
    align-items: start;
  }

  .page-about .about-mission__values {
    gap: 1rem;
  }

  .page-about .about-journey__banner img {
    height: 300px;
  }

  .page-about .about-capability__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .page-about .about-team__layout {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 2.5rem;
    align-items: center;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2.5rem;
  }

  .page-about .about-trust__panel {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-about .about-timeline__axis {
    display: block;
    position: absolute;
    top: 50%;
    inset-inline: 0;
    transform: translateY(-50%);
    width: 100%;
    height: 8px;
    color: var(--c-blue-500);
    z-index: 0;
  }

  .page-about .about-timeline__items {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
    height: 380px;
  }

  .page-about .about-timeline__item {
    position: relative;
    padding-left: 0;
    min-width: 0;
  }

  .page-about .about-timeline__item::before {
    display: none;
  }

  .page-about .about-timeline__item:hover .about-timeline__node {
    background: var(--c-orange);
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.25);
    transform: translate(-50%, -50%) scale(1.08);
  }

  .page-about .about-timeline__node {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    background: var(--c-blue-800);
    border: 3px solid var(--c-snow);
    box-shadow: 0 0 0 2px var(--c-blue-500);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
  }

  .page-about .about-timeline__version {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--c-snow);
  }

  .page-about .about-timeline__card {
    position: absolute;
    left: 0;
    right: 0;
    width: auto;
  }

  .page-about .about-timeline__item:nth-child(odd) .about-timeline__card {
    top: 0;
    bottom: calc(50% + 2.25rem);
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__card {
    top: calc(50% + 2.25rem);
    bottom: 0;
  }

  .page-about .team-card {
    height: 230px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--about-radius);
    perspective: 1600px;
  }

  .page-about .team-card__inner {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.2, 0.7, 0.3, 1);
  }

  .page-about .team-card:hover .team-card__inner,
  .page-about .team-card:focus .team-card__inner,
  .page-about .team-card:focus-within .team-card__inner {
    transform: rotateY(180deg);
  }

  .page-about .team-card__front,
  .page-about .team-card__back {
    position: absolute;
    inset: 0;
    padding: 1.5rem;
    background: #fff;
    border: var(--about-border);
    border-radius: var(--about-radius);
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.08);
  }

  .page-about .team-card__front {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
  }

  .page-about .team-card__back {
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
  }

  .page-about .team-card__hint {
    display: inline-block;
    margin-top: 0.625rem;
    font-size: 0.75rem;
    color: var(--c-blue-500);
    font-family: var(--font-mono);
    letter-spacing: 0.04em;
  }
}

@media (min-width: 1200px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}