.page-about {
  --about-line: rgba(201, 169, 97, 0.36);
  --about-space: 64px;
}

.page-about .breadcrumbs {
  margin-bottom: 32px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-about .page-head--about {
  position: relative;
  padding: 48px 0 40px;
  border-bottom: 2px solid var(--gold);
  margin-bottom: 36px;
}

.page-about .page-head--about::before {
  content: "NO.02";
  position: absolute;
  right: 8px;
  top: -16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  letter-spacing: 0.22em;
  writing-mode: vertical-rl;
}

.page-about .page-head__kicker {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.page-about .page-head__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.1;
  color: var(--ink);
  margin-bottom: 20px;
}

.page-about .page-head__desc {
  max-width: 680px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  opacity: 0.86;
}

.page-about .about-banner {
  margin: 0 0 56px;
  padding: 0;
}

.page-about .about-banner img {
  width: 100%;
  height: auto;
  display: block;
  clip-path: polygon(0 0, calc(100% - 44px) 0, 100% 44px, 100% 100%, 44px 100%, 0 calc(100% - 44px));
}

.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  padding-bottom: 72px;
}

.page-about .about-main {
  display: grid;
  gap: var(--about-space);
}

.page-about .about-section {
  scroll-margin-top: 24px;
}

.page-about .about-section__lead {
  font-size: 18px;
  line-height: 1.6;
  color: var(--ink);
  margin-bottom: 24px;
  padding-left: 16px;
  border-left: 4px solid var(--gold);
}

.page-about .about-origin {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-about .about-origin__content p {
  margin-bottom: 16px;
  line-height: 1.75;
  font-size: 16px;
}

.page-about .about-origin__content a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

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

.page-about .about-origin__figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 0 100%);
}

.page-about .about-services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.page-about .card {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-radius: 0;
}

.page-about .card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(27, 27, 27, 0.1);
}

.page-about .card__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  color: var(--purple);
  margin-bottom: 12px;
}

.page-about .card__text {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .card__text a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

.page-about .about-services__figure {
  margin: 0 0 24px;
}

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

.page-about .about-security {
  background: var(--purple);
  color: var(--white);
  padding: 40px 24px;
  clip-path: polygon(0 0, calc(100% - 32px) 0, 100% 32px, 100% 100%, 0 100%);
}

.page-about .about-security .section-head__title {
  color: var(--gold-light);
}

.page-about .about-security .section-head__line {
  background: var(--gold);
}

.page-about .about-security__content {
  display: grid;
  gap: 20px;
}

.page-about .about-security__content > p {
  font-size: 15px;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.85);
}

.page-about .about-security__list {
  list-style: none;
  padding: 0;
  display: grid;
  gap: 10px;
  margin: 0;
}

.page-about .about-security__list li {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
}

.page-about .about-security__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 12px;
  height: 2px;
  background: var(--gold);
}

.page-about .status-panel {
  background: var(--purple-dark);
  border-left: 4px solid var(--gold);
  padding: 20px;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .about-details {
  margin-top: 12px;
  border-top: 1px dashed rgba(26, 26, 26, 0.22);
  padding-top: 16px;
}

.page-about .about-details summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--purple);
  list-style: none;
  position: relative;
  padding-right: 24px;
}

.page-about .about-details summary::-webkit-details-marker {
  display: none;
}

.page-about .about-details summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold);
  transition: transform 0.2s ease;
}

.page-about .about-details[open] summary::after {
  content: "−";
}

.page-about .about-details p {
  margin-top: 12px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-about .about-details--dark {
  border-top: 1px dashed rgba(255, 255, 255, 0.25);
}

.page-about .about-details--dark summary {
  color: var(--gold-light);
}

.page-about .about-details--dark p {
  color: rgba(255, 255, 255, 0.8);
}

.page-about .about-details--dark a {
  color: var(--gold);
}

.page-about .about-timeline {
  padding: 32px 24px 24px;
  background: var(--paper);
  border: 1px solid rgba(201, 169, 97, 0.4);
  position: relative;
}

.page-about .about-timeline__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 24px;
  color: var(--purple);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-about .about-timeline__title::before {
  content: "MLS";
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
  background: var(--purple);
  padding: 4px 8px;
}

.page-about .about-timeline__list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  border-left: 2px solid var(--gold);
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 24px 24px;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 4px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold-light);
  border: 3px solid var(--purple);
  box-sizing: border-box;
}

.page-about .about-timeline__details summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-timeline__details summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline__phase {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
  background: var(--purple);
  padding: 2px 8px;
}

.page-about .about-timeline__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--ink);
}

.page-about .about-timeline__details p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  opacity: 0.85;
}

.page-about .about-timeline__details p a {
  color: var(--orange);
  text-decoration: none;
  font-size: 13px;
  white-space: nowrap;
}

.page-about .about-timeline__note {
  margin-top: 24px;
  padding-top: 16px;
  border-top: 1px dashed rgba(201, 169, 97, 0.5);
  font-size: 13px;
  line-height: 1.6;
  color: var(--silver);
}

@media (max-width: 480px) {
  .page-about .page-head--about::before {
    display: none;
  }
  .page-about .about-security {
    padding: 32px 16px;
  }
  .page-about .about-timeline {
    padding: 24px 16px 20px;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: minmax(0, 7fr) minmax(280px, 3fr);
    gap: 56px;
    align-items: start;
  }

  .page-about .about-timeline {
    position: sticky;
    top: 24px;
    max-height: calc(100vh - 48px);
    overflow-y: auto;
  }

  .page-about .about-origin {
    grid-template-columns: minmax(0, 3fr) minmax(240px, 2fr);
  }

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

  .page-about .about-security {
    padding: 56px 48px;
  }
}