.page-about {
  --about-radius: 14px;
  --about-gap: 24px;
  --about-line: #B8B2A6;
  font-family: var(--font-body);
  color: var(--c-blue);
  overflow-x: hidden;
}

.page-about .breadcrumb {
  padding-top: 18px;
  padding-bottom: 0;
}

.page-about .about-hero {
  position: relative;
  padding: 28px 0 42px;
  background:
    linear-gradient(135deg, rgba(224, 168, 62, .14) 0%, transparent 42%),
    linear-gradient(160deg, var(--c-mist) 0%, var(--c-snow) 64%, #F0EAE0 100%);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 6px;
  background: linear-gradient(90deg, var(--c-flag-red) 0%, var(--c-flag-yellow) 30%, var(--c-flag-blue) 55%, var(--c-flag-green) 80%, var(--c-gold) 100%);
}

.page-about .about-hero__inner {
  display: flex;
  flex-direction: column;
  gap: var(--about-gap);
}

.page-about .about-hero__text {
  padding-right: 0;
}

.page-about .about-hero__text h1 {
  font-family: var(--font-head);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.015em;
  font-size: 2rem;
  margin: 12px 0 16px;
}

.page-about .about-hero__text p {
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.8;
  margin: 0 0 20px;
  max-width: 620px;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__figure {
  margin: 0;
  border-radius: var(--about-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transform: rotate(1deg);
  border: 1px solid rgba(224, 168, 62, .35);
  background: var(--c-snow);
}

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

.page-about .about-mission {
  padding: 54px 0;
}

.page-about .about-mission__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-mission__intro p {
  margin: 12px 0 18px;
  font-size: 15px;
  line-height: 1.8;
}

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

.page-about .about-mission__stats .data-cell {
  background: linear-gradient(135deg, rgba(224, 168, 62, .09), rgba(30, 42, 74, .03));
  border: 1px solid rgba(184, 178, 166, .38);
  border-radius: var(--radius-md);
  padding: 16px 14px;
}

.page-about .about-mission__stats .data-value {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 1.6rem;
  color: var(--c-blue);
}

.page-about .about-mission__stats .data-value small {
  font-family: var(--font-head);
  font-size: .7em;
  color: var(--c-red);
}

.page-about .about-archives {
  padding: 54px 0;
  background: linear-gradient(180deg, var(--c-mist) 0%, var(--c-snow) 100%);
}

.page-about .arch-timeline {
  display: grid;
  gap: 26px;
  margin-top: 28px;
}

.page-about .arch-timeline__rail {
  display: flex;
  flex-direction: column;
  gap: 10px;
  position: relative;
}

.page-about .arch-timeline__rail::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-gold) 20%, var(--c-red) 60%, var(--c-flag-green) 100%);
  opacity: .35;
}

.page-about .arch-rail__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  border: 0;
  background: transparent;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--c-blue);
  text-align: left;
  cursor: pointer;
  transition: background .3s var(--ease), transform .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .arch-rail__item:hover,
.page-about .arch-rail__item.is-active,
.page-about .arch-rail__item[aria-selected="true"] {
  background: var(--c-gold);
  color: var(--c-midnight);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(17, 26, 43, .08);
}

.page-about .arch-rail__dot {
  flex: 0 0 auto;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--c-red);
  box-shadow: 0 0 0 4px rgba(196, 68, 59, .15);
}

.page-about .arch-rail__range {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 15px;
}

.page-about .arch-rail__label {
  font-size: 12px;
  opacity: .72;
}

.page-about .arch-card {
  background: var(--c-snow);
  border: 1px solid rgba(184, 178, 166, .4);
  border-left: 4px solid var(--c-gold);
  border-radius: var(--radius-md);
  padding: 22px 20px;
  margin-bottom: 14px;
  box-shadow: 0 6px 18px rgba(17, 26, 43, .05);
}

.page-about .arch-card__period {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 13px;
  font-weight: 600;
  color: var(--c-red);
  border: 1px solid rgba(196, 68, 59, .3);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

.page-about .arch-card h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  margin: 0 0 8px;
}

.page-about .arch-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-about .arch-card ul {
  margin: 12px 0 14px;
  padding-left: 20px;
}

.page-about .arch-card li {
  margin: 6px 0;
  font-size: 14px;
}

.page-about .about-team {
  padding: 54px 0;
}

.page-about .about-team__layout {
  display: grid;
  gap: 28px;
  margin-top: 28px;
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(224, 168, 62, .4);
  box-shadow: 0 12px 30px rgba(17, 26, 43, .1);
}

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

.page-about .team-orbit {
  position: relative;
  display: grid;
  gap: 14px;
  padding: 18px;
  background: linear-gradient(135deg, rgba(30, 42, 74, .045), rgba(47, 109, 74, .045));
  border-radius: var(--radius-lg);
  border: 1px dashed rgba(184, 178, 166, .65);
}

.page-about .team-orbit__center {
  text-align: center;
  padding: 14px 18px;
  background: var(--c-midnight);
  color: var(--c-snow);
  border-radius: var(--radius-md);
  font-family: var(--font-head);
  box-shadow: 0 8px 20px rgba(17, 26, 43, .16);
}

.page-about .team-orbit__core {
  display: block;
  font-weight: 900;
  font-size: 16px;
}

.page-about .team-orbit__sub {
  display: block;
  font-size: 12px;
  color: var(--c-gold);
  margin-top: 4px;
}

.page-about .team-orbit__node {
  background: var(--c-snow);
  border: 1px solid rgba(184, 178, 166, .5);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .team-orbit__node p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-about .node-tag {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 14px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--c-gold);
  color: var(--c-midnight);
}

.page-about .about-data {
  padding: 54px 0;
  background: linear-gradient(160deg, var(--c-snow) 0%, var(--c-mist) 100%);
}

.page-about .data-flow {
  display: grid;
  gap: 18px;
  margin-top: 28px;
}

.page-about .data-flow__step {
  padding: 20px 18px;
  background: var(--c-snow);
  border-top: 4px solid var(--c-blue);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  position: relative;
}

.page-about .step-num {
  font-family: var(--font-data);
  font-weight: 600;
  color: var(--c-red);
  font-size: 20px;
}

.page-about .data-flow__step h3 {
  font-family: var(--font-head);
  font-weight: 800;
  margin: 8px 0 6px;
  font-size: 18px;
}

.page-about .data-flow__step p {
  font-size: 14px;
  line-height: 1.75;
  margin: 0;
}

.page-about .about-tibet {
  padding: 54px 0;
}

.page-about .about-tibet__grid {
  display: grid;
  gap: 32px;
}

.page-about .tibet-region {
  margin-top: 22px;
}

.page-about .tibet-region__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--c-line);
  padding-bottom: 10px;
}

.page-about .tibet-tab {
  border: 0;
  background: transparent;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  color: var(--c-blue);
  padding: 6px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: background .3s var(--ease), color .3s var(--ease);
}

.page-about .tibet-tab:hover,
.page-about .tibet-tab.is-active,
.page-about .tibet-tab[aria-selected="true"] {
  background: var(--c-green);
  color: var(--c-snow);
}

.page-about .tibet-panel {
  padding: 16px 2px 0;
}

.page-about .tibet-panel h3 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 18px;
  margin: 0 0 8px;
}

.page-about .tibet-panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-about .about-tibet__map {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(47, 109, 74, .3);
  background: linear-gradient(135deg, rgba(47, 109, 74, .08), rgba(224, 168, 62, .06));
  padding: 10px;
}

.page-about .about-tibet__map img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
}

.page-about .about-accolades {
  padding: 64px 0;
  background: radial-gradient(1200px 400px at 80% 10%, rgba(224, 168, 62, .18), transparent 60%), var(--c-midnight);
  color: var(--c-snow);
}

.page-about .about-accolades .section-title {
  color: var(--c-snow);
}

.page-about .about-accolades .section-head p {
  color: rgba(247, 246, 242, .76);
}

.page-about .accolade-grid {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.page-about .accolade-card {
  padding: 24px 20px;
  background: rgba(30, 42, 74, .65);
  border: 1px solid rgba(224, 168, 62, .3);
  border-radius: var(--radius-lg);
}

.page-about .accolade-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 2px solid var(--c-gold);
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 14px;
  color: var(--c-gold);
  margin-bottom: 14px;
  background: rgba(224, 168, 62, .06);
}

.page-about .accolade-card h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  margin: 0 0 8px;
}

.page-about .accolade-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(247, 246, 242, .8);
}

.page-about .accolade-note {
  margin-top: 28px;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(247, 246, 242, .7);
}

.page-about .accolade-note a {
  color: var(--c-gold);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-next {
  padding: 54px 0;
  border-bottom: 1px solid var(--c-line);
}

.page-about .about-next__inner {
  display: grid;
  gap: 24px;
}

.page-about .about-next__heading h2 {
  margin: 0 0 10px;
}

.page-about .about-next__heading p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-terrain {
  line-height: 0;
  background: var(--c-snow);
}

.page-about .about-terrain svg {
  display: block;
  width: 100%;
  height: 160px;
}

@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 36px 0 52px;
  }

  .page-about .about-hero__inner {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 36px;
    align-items: center;
  }

  .page-about .about-hero__text h1 {
    font-size: 2.4rem;
  }

  .page-about .about-mission__grid {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
    align-items: center;
  }

  .page-about .arch-timeline {
    grid-template-columns: 230px 1fr;
    gap: 36px;
    align-items: start;
  }

  .page-about .arch-timeline__rail {
    padding-top: 6px;
  }

  .page-about .about-team__layout {
    grid-template-columns: 5fr 7fr;
    gap: 36px;
    align-items: center;
  }

  .page-about .data-flow {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-about .about-tibet__grid {
    grid-template-columns: 7fr 5fr;
    gap: 36px;
    align-items: center;
  }

  .page-about .accolade-grid {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-about .about-next__inner {
    grid-template-columns: 7fr 5fr;
    gap: 32px;
    align-items: center;
  }

  .page-about .about-terrain svg {
    height: 180px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero__text h1 {
    font-size: 2.8rem;
  }

  .page-about .about-hero__figure {
    transform: rotate(1.1deg) translateX(6px);
  }

  .page-about .about-mission {
    padding: 64px 0;
  }

  .page-about .about-archives {
    padding: 64px 0;
  }

  .page-about .arch-card {
    padding: 28px 26px;
    margin-bottom: 16px;
  }

  .page-about .team-orbit {
    display: block;
    min-height: 420px;
    padding: 0;
  }

  .page-about .team-orbit::before {
    content: "";
    position: absolute;
    inset: 26px;
    border: 2px dashed rgba(224, 168, 62, .5);
    border-radius: 50%;
    pointer-events: none;
  }

  .page-about .team-orbit__center {
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 170px;
    z-index: 2;
  }

  .page-about .team-orbit__node {
    position: absolute;
    width: 44%;
    z-index: 2;
  }

  .page-about .team-orbit__node:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 18px rgba(17, 26, 43, .1);
    border-color: rgba(224, 168, 62, .6);
  }

  .page-about .team-orbit__node--edit {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
  }

  .page-about .team-orbit__node--edit:hover {
    transform: translateX(-50%) translateY(-2px);
  }

  .page-about .team-orbit__node--data {
    bottom: 0;
    left: 0;
  }

  .page-about .team-orbit__node--visual {
    bottom: 0;
    right: 0;
  }

  .page-about .data-flow {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .page-about .data-flow__step:not(:last-child)::after {
    content: "›";
    position: absolute;
    right: -19px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--c-red);
    font-size: 26px;
    font-family: var(--font-data);
    z-index: 2;
  }

  .page-about .about-data {
    padding: 64px 0;
  }

  .page-about .about-tibet {
    padding: 64px 0;
  }

  .page-about .about-accolades {
    padding: 74px 0;
  }

  .page-about .accolade-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about .about-next {
    padding: 64px 0;
  }
}