.page-about {
  --tl-x: 8px;
  background: var(--void);
  color: var(--fog);
  font-family: var(--body-font);
  overflow-x: hidden;
}

.page-about .container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.page-about .breadcrumb {
  margin-bottom: 28px;
}

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

@media (min-width: 1024px) {
  .page-about section {
    padding: 96px 0;
  }
}

.page-about .about-hero {
  position: relative;
  padding: 48px 0 64px;
  background-color: var(--void);
  background-image:
    linear-gradient(rgba(22, 35, 63, 0.5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 35, 63, 0.5) 1px, transparent 1px);
  background-size: 36px 36px;
  border-bottom: 1px solid rgba(57, 255, 136, 0.14);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 88% 16%, rgba(57, 255, 136, 0.13), transparent 34%),
    radial-gradient(circle at 62% 82%, rgba(255, 122, 26, 0.09), transparent 28%);
  pointer-events: none;
}

.page-about .about-hero .container {
  position: relative;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 32px;
  align-items: end;
}

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.55fr 0.85fr;
    gap: 56px;
  }
}

.page-about .about-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono-font);
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--lime);
}

.page-about .about-hero__eyebrow::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--lime);
}

.page-about .about-hero h1 {
  margin: 14px 0 18px;
  font-family: var(--title-font);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--moon);
  max-width: 14em;
}

@media (min-width: 960px) {
  .page-about .about-hero h1 {
    font-size: 44px;
  }
}

.page-about .about-hero__lead {
  margin: 0;
  font-size: 16px;
  line-height: 1.9;
  color: var(--fog);
  max-width: 46em;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.page-about .about-hero__facts {
  display: grid;
  gap: 12px;
  margin: 0;
}

.page-about .about-hero__fact {
  position: relative;
  padding: 18px 20px 18px 24px;
  background: rgba(22, 35, 63, 0.78);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
  transition: background 0.3s var(--ease);
}

.page-about .about-hero__fact:hover {
  background: rgba(30, 48, 82, 0.9);
}

.page-about .about-hero__fact::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lime);
  transition: background 0.3s var(--ease);
}

.page-about .about-hero__fact:hover::before {
  background: var(--ember);
}

.page-about .about-hero__fact dt {
  font-family: var(--mono-font);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fog);
}

.page-about .about-hero__fact dd {
  margin: 6px 0 0;
  font-family: var(--mono-font);
  font-weight: 800;
  font-size: 32px;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--lime);
}

.page-about .about-hero__fact span {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--fog);
}

.page-about .about-story {
  background: var(--abyss);
}

.page-about .about-story__grid {
  display: grid;
  gap: 36px;
}

@media (min-width: 960px) {
  .page-about .about-story__grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 72px;
    align-items: center;
  }
}

.page-about .about-story__text p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
}

.page-about .about-story__text p:last-child {
  margin-bottom: 0;
}

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

.page-about .about-story__sheet {
  position: relative;
  padding: 36px 30px;
  background: rgba(22, 35, 63, 0.8);
  border: 1px solid rgba(168, 184, 208, 0.14);
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-about .about-story__sheet::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 72px;
  height: 72px;
  background: linear-gradient(135deg, rgba(255, 194, 75, 0.85), rgba(255, 122, 26, 0.16));
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-story__stamp {
  position: relative;
  z-index: 1;
  display: inline-block;
  font-family: var(--mono-font);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: 0.08em;
  color: var(--moon);
  background: rgba(255, 122, 26, 0.18);
  border: 1px solid rgba(255, 122, 26, 0.5);
  padding: 6px 14px;
  margin-right: 10px;
}

.page-about .about-story__stamp--lime {
  color: var(--lime);
  background: rgba(57, 255, 136, 0.16);
  border-color: rgba(57, 255, 136, 0.5);
}

.page-about .about-story__note {
  position: relative;
  z-index: 1;
  margin: 28px 0 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--fog);
}

.page-about .about-timeline {
  background-color: var(--void);
  background-image:
    radial-gradient(circle at 82% 18%, rgba(57, 255, 136, 0.09), transparent 36%),
    linear-gradient(rgba(22, 35, 63, 0.4) 1px, transparent 1px);
  background-size: auto, 40px 40px;
}

.page-about .about-timeline__wrap {
  max-width: 900px;
  margin: 52px auto 0;
  position: relative;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 26px 1fr;
  column-gap: 14px;
  row-gap: 4px;
  margin-bottom: 48px;
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: var(--tl-x);
  top: 24px;
  bottom: -52px;
  width: 2px;
  background: linear-gradient(180deg, rgba(57, 255, 136, 0.5), rgba(168, 184, 208, 0.14));
  z-index: 0;
}

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

.page-about .about-timeline__dot {
  position: relative;
  z-index: 1;
  grid-column: 1;
  grid-row: 1;
  justify-self: start;
  width: 18px;
  height: 18px;
  margin-top: 6px;
  border-radius: 50%;
  border: 3px solid var(--lime);
  background: var(--void);
  box-shadow: 0 0 0 1px rgba(57, 255, 136, 0.24);
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-about .about-timeline__item:hover .about-timeline__dot,
.page-about .about-timeline__item[data-visible="true"] .about-timeline__dot {
  border-color: var(--lime);
  box-shadow: 0 0 22px 6px rgba(57, 255, 136, 0.45);
}

.page-about .about-timeline__year {
  grid-column: 2;
  grid-row: 1;
  justify-self: start;
  align-self: start;
  background: var(--ember);
  color: var(--void);
  font-family: var(--mono-font);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.08em;
  line-height: 1.2;
  padding: 6px 14px;
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, calc(100% - 2px) 100%, 6px 100%, 0 calc(100% - 6px));
}

.page-about .tl-details {
  grid-column: 2;
  grid-row: 2;
  background: rgba(22, 35, 63, 0.84);
  border: 1px solid rgba(168, 184, 208, 0.12);
  border-left: 3px solid var(--lime);
  border-radius: var(--radius);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .tl-details[open] {
  background: rgba(22, 35, 63, 0.94);
  border-left-color: var(--datum);
}

.page-about .tl-details__summary {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 20px 22px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl-details__summary:hover {
  background: rgba(57, 255, 136, 0.05);
}

.page-about .tl-details__eyebrow {
  margin: 0;
  font-family: var(--title-font);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--moon);
}

.page-about .tl-details__more {
  margin-left: auto;
  font-family: var(--mono-font);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-about .tl-details__more::before {
  content: "展开详情";
}

.page-about .tl-details[open] .tl-details__more::before {
  content: "收起详情";
}

.page-about .tl-details__extra {
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-about .tl-details:hover .tl-details__extra,
.page-about .tl-details[open] .tl-details__extra {
  opacity: 1;
  transform: translateY(0);
}

.page-about .tl-details__body {
  padding: 4px 22px 22px;
  font-size: 15px;
  line-height: 1.9;
  color: var(--fog);
}

.page-about .tl-details__body p {
  margin: 0;
}

.page-about .tl-details__body ul {
  margin: 14px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
}

.page-about .about-timeline__media {
  max-width: 840px;
  margin: 64px auto 0;
}

.page-about .about-timeline__media img,
.page-about .about-data__visual,
.page-about .about-team__media img {
  max-width: 100%;
}

.page-about .about-timeline__media img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  border: 1px solid rgba(168, 184, 208, 0.14);
}

.page-about .about-data {
  background-color: var(--abyss);
  background-image: radial-gradient(circle at 12% 88%, rgba(255, 122, 26, 0.12), transparent 32%);
}

.page-about .about-data__visual {
  width: 100%;
  height: auto;
  display: block;
  margin: 40px 0 0;
  max-height: 340px;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid rgba(168, 184, 208, 0.1);
}

.page-about .about-data__dashboard {
  display: grid;
  gap: 16px;
  margin-top: 20px;
}

@media (min-width: 1024px) {
  .page-about .about-data__dashboard {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 28px;
  }
}

.page-about .about-data__group {
  position: relative;
  padding: 24px 24px 10px;
  background: linear-gradient(180deg, rgba(22, 35, 63, 0.92), rgba(16, 26, 48, 0.9));
  border: 1px solid rgba(168, 184, 208, 0.1);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .about-data__group::before {
  content: attr(data-index);
  position: absolute;
  top: 8px;
  right: 16px;
  font-family: var(--mono-font);
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(230, 239, 248, 0.05);
}

.page-about .about-data__group::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lime);
}

.page-about .about-data__group:nth-child(2)::after {
  background: var(--ember);
}

.page-about .about-data__group:nth-child(3)::after {
  background: var(--datum);
}

.page-about .about-data__group:nth-child(4)::after {
  background: var(--teal);
}

.page-about .about-data__group-title {
  margin: 0 0 14px;
  font-family: var(--mono-font);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fog);
}

.page-about .about-data__stat {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px dashed rgba(168, 184, 208, 0.14);
}

.page-about .about-data__stat:last-child {
  border-bottom: 0;
}

.page-about .about-data__value {
  font-family: var(--mono-font);
  font-weight: 800;
  font-size: 28px;
  line-height: 1;
  color: var(--datum);
  min-width: 84px;
  white-space: nowrap;
}

.page-about .about-data__label {
  font-size: 15px;
  line-height: 1.5;
  color: var(--moon);
}

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

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

@media (min-width: 960px) {
  .page-about .about-team__grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 64px;
    align-items: center;
  }
}

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

.page-about .about-team__media::before {
  content: "";
  position: absolute;
  inset: -10px -10px 10px 10px;
  border: 1px solid rgba(57, 255, 136, 0.25);
  border-radius: var(--radius);
  z-index: 0;
}

.page-about .about-team__media img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 12px 100%, 0 calc(100% - 12px));
}

.page-about .about-team__content p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.9;
}

.page-about .about-team__content p:last-child {
  margin-bottom: 0;
}

.page-about .about-local {
  background-color: var(--abyss);
  background-image:
    linear-gradient(120deg, rgba(255, 122, 26, 0.14), transparent 32%),
    linear-gradient(240deg, rgba(57, 255, 136, 0.1), transparent 34%);
}

.page-about .about-local__panel {
  position: relative;
  padding: 40px 28px;
  background: rgba(16, 26, 48, 0.9);
  border: 1px solid rgba(57, 255, 136, 0.18);
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 28px 100%, 0 calc(100% - 28px));
}

@media (min-width: 1024px) {
  .page-about .about-local__panel {
    padding: 56px 60px;
  }
}

.page-about .about-local__panel p {
  margin: 0 0 14px;
  max-width: 60em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--fog);
}

.page-about .about-local__panel p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-local__panel a {
  color: var(--lime);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-local__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-about .about-local__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(22, 35, 63, 0.85);
  border: 1px solid rgba(57, 255, 136, 0.22);
  color: var(--moon);
  padding: 9px 14px;
  font-size: 13px;
  line-height: 1.4;
  border-radius: 999px;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-local__item::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
  flex: 0 0 auto;
}

.page-about .about-local__item:hover {
  border-color: var(--ember);
  background: rgba(30, 48, 82, 0.9);
}

@media (min-width: 1024px) {
  .page-about {
    --tl-x: 110px;
  }

  .page-about .about-hero {
    padding: 88px 0 96px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 120px 160px 1fr;
    column-gap: 28px;
    row-gap: 0;
  }

  .page-about .about-timeline__dot {
    grid-column: 1;
    grid-row: 1;
    justify-self: end;
    margin-top: 8px;
  }

  .page-about .about-timeline__year {
    grid-column: 2;
    grid-row: 1;
    margin-top: 2px;
  }

  .page-about .tl-details {
    grid-column: 3;
    grid-row: 1;
  }

  .page-about .about-timeline__item::after {
    top: 26px;
    bottom: -52px;
  }
}