.page-about {
  background: var(--c-light);
  color: var(--c-dark);
  overflow-x: hidden;
}

.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .section {
  padding-block: 4.5rem;
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1rem;
  margin-bottom: 2rem;
}

.page-about .section-index {
  font-family: var(--font-data);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-orange);
}

.page-about .section-kicker {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--c-purple);
  text-transform: uppercase;
}

.page-about .section-title {
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1.2;
  margin: 0;
  color: var(--c-deep);
}

/* Hero */
.page-about .about-hero {
  position: relative;
  background: var(--c-deep);
  color: var(--c-white);
  padding: 4.5rem 0 2.5rem;
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: -18%;
  width: 72%;
  height: 100%;
  background: linear-gradient(135deg, rgba(255, 107, 0, 0.22) 0%, rgba(74, 30, 122, 0.5) 100%);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-about .about-hero-copy {
  max-width: 36rem;
}

.page-about .about-hero-kicker {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.22em;
  color: var(--c-gold);
  margin: 0 0 1rem;
}

.page-about .about-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.05;
  margin: 0 0 0.5rem;
  letter-spacing: 0.02em;
}

.page-about .about-hero-lead {
  font-family: var(--font-data);
  font-size: 1.2rem;
  color: var(--c-orange);
  margin: 0 0 1.25rem;
}

.page-about .about-hero-desc {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
  max-width: 30rem;
  margin: 0 0 2rem;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.page-about .about-hero .btn-ghost {
  color: var(--c-white);
  border-color: rgba(255, 255, 255, 0.5);
}

.page-about .about-hero-figure {
  margin: 0;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 2rem 4rem rgba(0, 0, 0, 0.35);
  transform: rotate(1.5deg);
}

.page-about .about-hero-figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 16 / 9;
}

.page-about .about-hero-stats {
  position: relative;
  z-index: 2;
  margin: 3rem auto 0;
  padding: 1.5rem 1.5rem 0;
  width: min(100%, var(--container));
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem 2rem;
}

.page-about .about-hero-stat {
  margin: 0;
}

.page-about .about-hero-stat dt {
  font-family: var(--font-data);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
}

.page-about .about-hero-stat dd {
  margin: 0.25rem 0 0;
  font-family: var(--font-data);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--c-orange);
}

.page-about .about-hero-dot {
  position: absolute;
  z-index: 1;
  font-family: var(--font-data);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--c-deep);
  background: var(--c-gold);
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  opacity: 0.92;
  box-shadow: 0 0.4rem 1rem rgba(0, 0, 0, 0.2);
  pointer-events: none;
}

.page-about .about-hero-dot-a {
  top: 14%;
  left: 5%;
}

.page-about .about-hero-dot-b {
  bottom: 16%;
  right: 8%;
}

/* Breadcrumb */
.page-about .about-breadcrumb {
  margin-top: 1.5rem;
  margin-bottom: -1rem;
  color: var(--c-dark);
}

.page-about .about-breadcrumb .breadcrumb-link {
  color: var(--c-purple);
}

.page-about .about-breadcrumb .breadcrumb-current {
  color: var(--c-dark);
}

/* 01 Origin */
.page-about .about-origin {
  background: var(--c-light);
}

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

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

.page-about .about-origin-content p {
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--c-dark);
  margin: 0 0 1.2rem;
}

.page-about .about-origin-lead {
  font-family: var(--font-head);
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--c-deep);
}

.page-about .about-origin-quote {
  margin: 2rem 0;
  padding: 1.2rem 1.5rem;
  border-left: 4px solid var(--c-orange);
  background: rgba(255, 107, 0, 0.08);
  border-radius: 0 0.6rem 0.6rem 0;
}

.page-about .about-origin-quote p {
  font-family: var(--font-head);
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--c-deep);
  margin: 0;
}

.page-about .about-origin-aside {
  position: relative;
  background: var(--c-deep);
  color: var(--c-white);
  padding: 1.8rem;
  border-radius: 0.8rem;
  overflow: hidden;
}

.page-about .about-origin-aside::after {
  content: "";
  position: absolute;
  right: -2rem;
  bottom: -2rem;
  width: 6rem;
  height: 6rem;
  background: var(--c-orange);
  opacity: 0.2;
  border-radius: 50%;
}

.page-about .about-origin-aside-num {
  display: block;
  font-family: var(--font-data);
  font-size: 3.8rem;
  font-weight: 700;
  line-height: 1;
  color: var(--c-orange);
}

.page-about .about-origin-aside-label {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-data);
  color: var(--c-gold);
}

.page-about .about-origin-aside-extra {
  display: block;
  margin-top: 1rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
}

/* 02 Journey */
.page-about .about-journey {
  background: var(--c-white);
}

.page-about .about-journey-figure {
  margin: 0 0 3rem;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 0.8rem 2rem rgba(10, 31, 68, 0.08);
}

.page-about .about-journey-figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 2.2rem;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 1rem;
  top: 0.2rem;
  bottom: 0.2rem;
  width: 2px;
  background: linear-gradient(180deg, var(--c-orange) 0%, var(--c-purple) 100%);
}

.page-about .about-timeline-item {
  position: relative;
  margin-bottom: 2rem;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: -1.55rem;
  top: 0.3rem;
  width: 0.85rem;
  height: 0.85rem;
  background: var(--c-orange);
  border: 3px solid var(--c-white);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--c-orange);
  z-index: 1;
}

.page-about .about-timeline-year {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-orange);
  background: rgba(255, 107, 0, 0.12);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  margin-bottom: 0.5rem;
}

.page-about .about-timeline-item:nth-child(even) .about-timeline-year {
  color: var(--c-purple);
  background: rgba(74, 30, 122, 0.12);
}

.page-about .about-timeline-card {
  background: var(--c-white);
  border: 1px solid rgba(10, 31, 68, 0.08);
  border-radius: 0.8rem;
  padding: 1.25rem 1.4rem;
  box-shadow: 0 0.4rem 1.6rem rgba(10, 31, 68, 0.07);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.page-about .about-timeline-card:hover {
  transform: translateX(0.35rem);
  box-shadow: 0 0.8rem 2.4rem rgba(10, 31, 68, 0.12);
}

.page-about .about-timeline-card h3 {
  font-family: var(--font-head);
  font-size: 1.4rem;
  margin: 0 0 0.5rem;
  color: var(--c-deep);
}

.page-about .about-timeline-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0 0 1rem;
  color: var(--c-dark);
}

.page-about .about-timeline-toggle {
  font-family: var(--font-data);
  font-size: 0.8rem;
  color: var(--c-deep);
  background: var(--c-light);
  border: 1px solid rgba(10, 31, 68, 0.15);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.3s var(--ease), color 0.3s var(--ease);
}

.page-about .about-timeline-toggle:hover {
  background: var(--c-orange);
  color: var(--c-white);
}

.page-about .about-timeline-detail {
  margin-top: 0.9rem;
}

.page-about .about-timeline-detail ul {
  margin: 0;
  padding: 0 0 0 1rem;
}

.page-about .about-timeline-detail li {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-dark);
}

/* 03 Tech */
.page-about .about-tech {
  position: relative;
  background: var(--c-deep);
  color: var(--c-white);
  overflow: hidden;
}

.page-about .about-tech::before {
  content: "";
  position: absolute;
  top: -4rem;
  left: -4rem;
  width: 14rem;
  height: 14rem;
  background: var(--c-purple);
  opacity: 0.4;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}

.page-about .about-tech .section-title {
  color: var(--c-white);
}

.page-about .about-tech .section-kicker {
  color: var(--c-gold);
}

.page-about .about-tech-lead {
  font-family: var(--font-head);
  font-size: 1.4rem;
  line-height: 1.5;
  color: var(--c-white);
  margin: 0 0 2rem;
}

.page-about .about-tech-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1rem;
}

.page-about .about-tech-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 0.8rem;
  padding: 1.5rem;
}

.page-about .about-tech-card .card-label {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.page-about .about-tech-card .card-extra {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-tech-value {
  display: block;
  font-family: var(--font-data);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-orange);
  margin: 0.4rem 0 0;
}

.page-about .about-tech-value small {
  font-size: 1.2rem;
  color: var(--c-gold);
}

.page-about .about-tech-card-key {
  background: linear-gradient(135deg, var(--c-purple) 0%, rgba(255, 107, 0, 0.35) 100%);
  border-color: transparent;
}

.page-about .about-tech-note {
  position: relative;
  z-index: 1;
  margin-top: 2rem;
  padding: 1.6rem;
  background: rgba(0, 0, 0, 0.22);
  border-left: 3px solid var(--c-orange);
  border-radius: 0 0.8rem 0.8rem 0;
}

.page-about .about-tech-note h3 {
  font-family: var(--font-head);
  font-size: 1.1rem;
  color: var(--c-white);
  margin: 0 0 0.5rem;
}

.page-about .about-tech-note p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
}

/* 04 Team */
.page-about .about-team {
  background: var(--c-light);
}

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

.page-about .about-team-copy p {
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--c-dark);
  margin: 0 0 1rem;
}

.page-about .about-team-values {
  list-style: none;
  margin: 1.8rem 0 0;
  padding: 0;
}

.page-about .about-team-values li {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 1rem 1.2rem;
  margin-bottom: 0.7rem;
  background: var(--c-white);
  border-left: 3px solid var(--c-orange);
  border-radius: 0 0.6rem 0.6rem 0;
  box-shadow: 0 0.3rem 1rem rgba(10, 31, 68, 0.06);
}

.page-about .about-team-values strong {
  font-family: var(--font-head);
  font-size: 1rem;
  color: var(--c-deep);
}

.page-about .about-team-values span {
  font-size: 0.9rem;
  color: var(--c-dark);
  opacity: 0.8;
  line-height: 1.6;
}

.page-about .about-team-figure {
  margin: 0;
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 0.8rem 2rem rgba(10, 31, 68, 0.08);
  order: -1;
}

.page-about .about-team-figure img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

/* 05 Commit */
.page-about .about-commit {
  position: relative;
  background: var(--c-purple);
  color: var(--c-white);
  overflow: hidden;
}

.page-about .about-commit::before {
  content: "";
  position: absolute;
  bottom: -6rem;
  right: -4rem;
  width: 18rem;
  height: 18rem;
  background: var(--c-gold);
  opacity: 0.12;
  border-radius: 50%;
  pointer-events: none;
}

.page-about .about-commit .section-title {
  color: var(--c-white);
}

.page-about .about-commit .section-kicker {
  color: var(--c-gold);
}

.page-about .about-commit-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.page-about .about-commit-card {
  background: rgba(10, 31, 68, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 0.9rem;
  padding: 1.5rem;
  transition: transform 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-commit-card:hover {
  background: rgba(10, 31, 68, 0.7);
  transform: translateY(-4px);
}

.page-about .about-commit-card h3 {
  font-family: var(--font-head);
  font-size: 1.15rem;
  margin: 0 0 0.6rem;
  color: var(--c-gold);
}

.page-about .about-commit-card p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.86);
}

/* Gate */
.page-about .about-gate {
  background: var(--c-deep);
  color: var(--c-white);
  padding: 4rem 0;
}

.page-about .about-gate-inner {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.page-about .about-gate-copy h2 {
  font-family: var(--font-head);
  font-size: 2rem;
  line-height: 1.2;
  margin: 0 0 0.5rem;
  color: var(--c-white);
}

.page-about .about-gate-copy p {
  margin: 0;
  max-width: 36rem;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.8);
}

.page-about .about-gate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.page-about .about-gate .btn-ghost {
  color: var(--c-white);
  border-color: rgba(255, 255, 255, 0.5);
}

/* Tablet */
@media (min-width: 768px) {
  .page-about .about-hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-tech-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-about .about-commit-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Desktop */
@media (min-width: 1080px) {
  .page-about .section-head {
    gap: 0.75rem 1.25rem;
    margin-bottom: 3rem;
  }

  .page-about .section-title {
    font-size: 2.4rem;
  }

  .page-about .section-index {
    font-size: 3.6rem;
  }

  .page-about .about-hero {
    padding: 6rem 0 3rem;
  }

  .page-about .about-hero-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.5rem;
  }

  .page-about .about-hero-stats {
    margin-top: 4rem;
    gap: 2rem;
  }

  .page-about .about-hero-stat dd {
    font-size: 2rem;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 0.28fr 1fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-origin .section-head,
  .page-about .about-team .section-head {
    display: block;
  }

  .page-about .about-origin .section-title,
  .page-about .about-team .section-title {
    margin-top: 0.4rem;
    display: block;
    font-size: 2.2rem;
  }

  .page-about .about-origin-body {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: start;
  }

  .page-about .about-origin-aside {
    position: sticky;
    top: 2rem;
  }

  .page-about .about-tech-grid {
    grid-template-columns: 1fr 1fr 1fr;
  }

  .page-about .about-tech-card-key {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 1.5rem;
  }

  .page-about .about-tech-card-key .about-tech-value {
    font-size: 4.5rem;
  }

  .page-about .about-tech-card-key .card-extra {
    margin-left: auto;
    margin-top: 0;
    max-width: 30rem;
  }

  .page-about .about-tech-note {
    padding: 2rem;
  }

  .page-about .about-team-grid {
    grid-template-columns: 1fr 0.9fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-team-figure {
    order: 2;
  }

  .page-about .about-commit-grid {
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1.5rem;
    margin-top: 3rem;
  }

  .page-about .about-commit-card {
    padding: 1.8rem;
  }

  .page-about .about-gate-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}