.page-about {
  background: var(--bg);
  color: var(--ink);
  overflow-x: hidden;
}

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

.page-about .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  color: var(--ink-soft);
}
.page-about .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
}
.page-about .breadcrumb a:hover {
  color: var(--orange);
}

.page-about .about-hero {
  position: relative;
  padding: 56px 0 72px;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 40px 40px;
  border-bottom: 2px solid var(--ink);
  overflow: hidden;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: 0;
  bottom: 0;
  width: 300px;
  background: var(--orange);
  transform: skewX(-14deg);
  opacity: 0.1;
  pointer-events: none;
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
}
.page-about .about-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(2.8rem, 8vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.5px;
  text-transform: uppercase;
  text-shadow: 4px 4px 0 var(--brown);
  transform: skewX(-4deg);
}
.page-about .about-hero__subtitle {
  margin: 12px 0 0;
  font-family: var(--font-index);
  font-size: clamp(1rem, 2.4vw, 1.5rem);
  color: var(--orange);
  letter-spacing: 2px;
  text-transform: uppercase;
}
.page-about .about-hero__lead {
  max-width: 36em;
  margin-top: 24px;
  font-size: 16px;
  line-height: 1.9;
  color: var(--ink-soft);
}
.page-about .about-hero__panel {
  margin-top: 8px;
  background: var(--bg-alt);
  color: var(--bg);
  padding: 28px 22px;
  border-left: 6px solid var(--orange);
  box-shadow: 8px 8px 0 rgba(43, 38, 32, 0.14);
}
.page-about .about-hero__panel-top {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 18px;
}
.page-about .hero-stats {
  margin: 0;
  display: grid;
}
.page-about .hero-stat {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(245, 242, 233, 0.22);
}
.page-about .hero-stat dt {
  font-family: var(--font-index);
  font-size: 12px;
  color: var(--metal);
  letter-spacing: 0.4px;
  text-transform: uppercase;
}
.page-about .hero-stat dd {
  margin: 0;
  font-family: var(--font-head);
  font-size: 26px;
  color: var(--orange-soft);
  white-space: nowrap;
}

.page-about .profile-frame {
  display: grid;
  gap: 28px;
  padding-top: 64px;
}
.page-about .profile-index {
  align-self: start;
  border-left: 2px solid var(--ink);
  padding: 4px 0 4px 18px;
}
.page-about .profile-index__nav {
  margin-top: 16px;
  display: grid;
  gap: 4px;
}
.page-about .profile-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 0;
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: 0.5px;
  text-decoration: none;
  color: var(--ink);
  border-bottom: 1px solid var(--line);
  transition: color 0.2s var(--ease), padding-left 0.2s var(--ease);
}
.page-about .profile-index__link:hover {
  color: var(--orange);
  padding-left: 8px;
  border-bottom-style: dashed;
}
.page-about .profile-index__link span {
  color: var(--orange);
  font-family: var(--font-head);
}
.page-about .profile-index__note {
  margin-top: 28px;
  display: grid;
  gap: 2px;
  font-family: var(--font-index);
  font-size: 12px;
  line-height: 1.4;
  color: var(--ink-soft);
}
.page-about .profile-index__note strong {
  font-size: 28px;
  color: var(--orange);
  font-family: var(--font-head);
}

.page-about .section-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-end;
  gap: 8px;
  padding-bottom: 12px;
  margin-bottom: 28px;
  border-bottom: 2px solid var(--ink);
}
.page-about .section-index {
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--orange);
  text-transform: uppercase;
}
.page-about .section-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(1.5rem, 3.4vw, 2.4rem);
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 1px;
  transform: skewX(-3deg);
}

.page-about .origin-grid {
  display: grid;
  gap: 36px;
}
.page-about .origin-copy p {
  margin: 0 0 18px;
}
.page-about .origin-quote {
  margin: 28px 0 0;
  padding: 18px 20px;
  border-left: 6px solid var(--orange);
  background: var(--glass);
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.7;
  color: var(--ink);
}
.page-about .origin-stamp {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: var(--ink);
  color: var(--bg);
  padding: 40px 24px;
  transform: skewX(-4deg);
  box-shadow: 10px 10px 0 var(--orange);
  align-self: start;
}
.page-about .origin-stamp__year {
  font-family: var(--font-head);
  font-size: 4.8rem;
  line-height: 1;
  color: var(--yellow);
  transform: skewX(4deg);
}
.page-about .origin-stamp__label {
  margin-top: 14px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--orange-soft);
  transform: skewX(4deg);
}
.page-about .origin-stamp p {
  margin: 14px 0 0;
  font-size: 14px;
  color: rgba(245, 242, 233, 0.72);
  transform: skewX(4deg);
}

.page-about .milestone-section {
  margin-top: 72px;
  padding: 72px 0;
  background: rgba(214, 203, 184, 0.24);
  border-top: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
}
.page-about .milestone-banner {
  margin-bottom: 48px;
  border: 2px solid var(--ink);
}
.page-about .timeline-list {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.page-about .timeline-item {
  position: relative;
  padding-left: 40px;
}
.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 13px;
  top: 30px;
  bottom: -24px;
  width: 2px;
  background: var(--brown);
}
.page-about .timeline-item:last-child::before {
  display: none;
}
.page-about .timeline-dot {
  position: absolute;
  left: 0;
  top: 6px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--orange);
  border: 6px solid var(--bg);
  box-shadow: 0 0 0 1px var(--ink);
  transition: transform 0.2s var(--ease);
}
.page-about .timeline-body {
  padding: 18px 20px 8px 0;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-about .timeline-year {
  font-family: var(--font-head);
  font-size: 1.35rem;
  color: var(--orange);
  display: block;
  margin-bottom: 4px;
}
.page-about .timeline-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
}
.page-about .timeline-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-about .architecture-section {
  background: var(--bg-alt);
  color: var(--bg);
  padding: 72px 0;
}
.page-about .architecture-section .section-head {
  border-bottom-color: rgba(245, 242, 233, 0.25);
}
.page-about .architecture-section .section-title {
  color: var(--bg);
}
.page-about .architecture-section .section-index {
  color: var(--orange-soft);
}
.page-about .architecture-lead {
  max-width: 44em;
  font-size: 17px;
  line-height: 1.9;
  margin: 0 0 32px;
  color: rgba(245, 242, 233, 0.86);
}
.page-about .architecture-wrap {
  display: grid;
  gap: 36px;
}
.page-about .architecture-copy__text {
  margin: 0 0 24px;
  color: rgba(245, 242, 233, 0.86);
}
.page-about .arch-table {
  margin: 0;
  border-top: 1px dashed rgba(245, 242, 233, 0.25);
}
.page-about .arch-table .data-row {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 4px;
  border-bottom: 1px dashed rgba(245, 242, 233, 0.25);
  border-left: 3px solid transparent;
  transition: background 0.2s var(--ease), border-left-color 0.2s var(--ease);
}
.page-about .arch-table .data-row:hover {
  background: rgba(255, 255, 255, 0.04);
  border-left-color: var(--orange);
}
.page-about .arch-table .data-cell {
  font-family: var(--font-index);
  font-size: 13px;
  color: var(--metal);
  margin: 0;
}
.page-about .arch-table .data-cell:last-child {
  color: var(--orange-soft);
  font-family: var(--font-head);
  font-size: 16px;
}
.page-about .arch-details {
  margin-top: 24px;
  border: 1px dashed rgba(245, 242, 233, 0.35);
  padding: 14px 16px;
}
.page-about .arch-details summary {
  font-family: var(--font-index);
  font-size: 13px;
  letter-spacing: 0.5px;
  cursor: pointer;
  color: var(--orange-soft);
}
.page-about .arch-details summary:hover {
  color: var(--orange);
}
.page-about .arch-details p {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(245, 242, 233, 0.8);
}
.page-about .architecture-aside {
  display: grid;
  gap: 20px;
}
.page-about .arch-media {
  border: 1px solid rgba(245, 242, 233, 0.2);
}
.page-about .arch-param-block {
  font-family: var(--font-index);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(245, 242, 233, 0.14);
  padding: 18px;
}
.page-about .arch-param-block__label {
  display: block;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--lime);
  margin-bottom: 10px;
}
.page-about .param-code {
  margin: 0;
  font-family: var(--font-index);
  font-size: 13px;
  line-height: 1.8;
  color: var(--bg);
  white-space: pre-wrap;
  word-break: break-word;
}
.page-about .arch-bg-row {
  display: grid;
  gap: 24px;
  margin-top: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(245, 242, 233, 0.2);
  align-items: center;
}
.page-about .arch-bg-copy .index-tag {
  color: var(--orange-soft);
}
.page-about .arch-bg-copy p {
  margin: 14px 0 0;
  color: rgba(245, 242, 233, 0.8);
}

.page-about .commitment-section {
  background: var(--ink);
  color: var(--bg);
  padding: 72px 0;
}
.page-about .commitment-section .section-head {
  border-bottom-color: rgba(245, 242, 233, 0.2);
}
.page-about .commitment-section .section-title {
  color: var(--bg);
}
.page-about .commitment-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .commitment-item {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 16px;
  padding: 22px 0;
  border-bottom: 1px solid rgba(245, 242, 233, 0.2);
}
.page-about .commitment-index {
  font-family: var(--font-index);
  font-size: 13px;
  color: var(--orange);
  border: 1px solid rgba(245, 242, 233, 0.35);
  padding: 4px 8px;
  width: fit-content;
  height: fit-content;
}
.page-about .commitment-content h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  color: var(--bg);
}
.page-about .commitment-content p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 242, 233, 0.78);
}
.page-about .commitment-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 36px;
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-head);
  font-size: 15px;
  letter-spacing: 1px;
  text-decoration: none;
  padding: 13px 24px;
  border: 2px solid currentColor;
  border-radius: var(--radius);
  transition: transform 0.2s var(--ease), background 0.2s var(--ease), border-color 0.2s var(--ease);
}
.page-about .btn:hover {
  transform: translateY(-2px);
}
.page-about .btn-primary {
  background: var(--orange);
  border-color: var(--orange);
  color: #ffffff;
  text-transform: uppercase;
}
.page-about .btn-primary:hover {
  background: var(--orange-soft);
  border-color: var(--orange-soft);
}
.page-about .btn-ghost {
  background: transparent;
  border-color: var(--bg);
  color: var(--bg);
  text-transform: uppercase;
}
.page-about .btn-ghost:hover {
  background: var(--bg);
  color: var(--ink);
  border-color: var(--bg);
}

.page-about .about-outro {
  padding: 64px 0 80px;
}
.page-about .about-outro__card {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  background: var(--glass);
  border: 2px solid var(--ink);
  padding: 40px;
  box-shadow: 12px 12px 0 rgba(43, 38, 32, 0.12);
}
.page-about .about-outro__card::before {
  content: "REGISTER-FH / PROFILE";
  position: absolute;
  top: -16px;
  left: 24px;
  background: var(--orange);
  color: #ffffff;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 1px;
  padding: 6px 10px;
}
.page-about .about-outro__title {
  margin: 10px 0 8px;
  font-family: var(--font-head);
  font-size: clamp(1.3rem, 2.6vw, 1.8rem);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.page-about .about-outro__copy p {
  margin: 0;
  color: var(--ink-soft);
}
.page-about .about-outro__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-outro .btn-ghost {
  color: var(--ink);
  border-color: var(--ink);
}
.page-about .about-outro .btn-ghost:hover {
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

@media (min-width: 760px) {
  .page-about .architecture-wrap {
    grid-template-columns: 1fr 45%;
    align-items: start;
  }
  .page-about .arch-bg-row {
    grid-template-columns: 1fr 1fr;
  }
  .page-about .arch-bg-img {
    order: 1;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1.2fr 0.8fr;
    align-items: end;
  }
  .page-about .profile-frame {
    grid-template-columns: 210px 1fr;
    gap: 64px;
    padding-top: 80px;
  }
  .page-about .profile-index {
    position: sticky;
    top: 120px;
  }
  .page-about .profile-content {
    min-width: 0;
  }
  .page-about .origin-grid {
    grid-template-columns: 1fr 240px;
    gap: 56px;
  }
  .page-about .timeline-list {
    flex-direction: row;
    gap: 16px;
    padding-top: 40px;
  }
  .page-about .timeline-item {
    flex: 1 1 0;
    min-width: 0;
    padding-left: 0;
  }
  .page-about .timeline-item::before,
  .page-about .timeline-item:last-child::before {
    display: none;
  }
  .page-about .timeline-list::before {
    content: "";
    position: absolute;
    top: 13px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--brown);
  }
  .page-about .timeline-dot {
    top: 0;
  }
  .page-about .timeline-body {
    padding: 24px 12px 8px;
    border-left: 2px solid var(--line);
    border-bottom: 0;
  }
  .page-about .timeline-item:hover .timeline-dot {
    background: var(--yellow);
    transform: scale(1.15);
  }
  .page-about .timeline-item:hover .timeline-body {
    background: rgba(224, 92, 58, 0.08);
    border-left-color: var(--orange);
  }
}