/* ========== 品牌故事页 · 页面专属 ========== */
.page-about {
  --about-stat-size: clamp(30px, 5vw, 44px);
  --about-pull-size: clamp(24px, 4vw, 34px);
}

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

/* ---------- Hero 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 28px 0 72px;
  overflow: hidden;
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -120px;
  right: -160px;
  width: 360px;
  height: 420px;
  background: linear-gradient(135deg, var(--orange), rgba(255, 106, 0, 0.4));
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
  border-radius: 90px 0 0 90px;
  opacity: 0.45;
  pointer-events: none;
}
.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 180px;
  height: 8px;
  border-radius: 0 var(--radius-pill) var(--radius-pill) 0;
  background: var(--green);
  opacity: 0.35;
  pointer-events: none;
}
.page-about .about-hero .breadcrumb {
  margin-bottom: 56px;
}
.page-about .about-hero__grid {
  display: grid;
  gap: 44px;
  align-items: center;
}
.page-about .about-hero__title {
  font-family: var(--font-display);
  font-size: clamp(40px, 8vw, 84px);
  line-height: 1;
  letter-spacing: -0.02em;
  margin: 20px 0;
}
.page-about .about-hero__title span {
  display: block;
  color: var(--orange);
}
.page-about .about-hero__lead {
  margin: 0;
  color: var(--mist);
  font-size: 16px;
  line-height: 1.8;
  max-width: 440px;
}
.page-about .about-hero__lead strong {
  color: var(--green);
  font-weight: 500;
}
.page-about .about-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}
.page-about .about-hero__index {
  background: linear-gradient(160deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow);
}
.page-about .about-hero__index ol {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 6px;
  counter-reset: hero-index;
}
.page-about .about-hero__index li {
  counter-increment: hero-index;
}
.page-about .about-hero__index a {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 8px;
  color: var(--white);
  text-decoration: none;
  font-size: 14px;
  border-radius: var(--radius-md);
  transition: background 0.2s, color 0.2s, padding-left 0.2s;
}
.page-about .about-hero__index a::before {
  content: "0" counter(hero-index);
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--green);
  opacity: 0.85;
}
.page-about .about-hero__index a::after {
  content: "→";
  margin-left: auto;
  color: var(--green);
  font-family: var(--font-data);
}
.page-about .about-hero__index a:hover {
  color: var(--orange-light);
  background: rgba(255, 106, 0, 0.08);
  padding-left: 14px;
}
.page-about .about-hero__vertical {
  display: none;
  position: absolute;
  right: 28px;
  bottom: 48px;
  font-size: 12px;
  letter-spacing: 0.28em;
  color: rgba(255, 255, 255, 0.35);
  font-family: var(--font-data);
}

/* ---------- 起点：只看重点 ---------- */
.page-about .about-origin {
  padding: 72px 0;
  position: relative;
  overflow: hidden;
}
.page-about .about-origin__grid {
  display: grid;
  gap: 48px;
  margin-top: 44px;
  align-items: center;
}
.page-about .about-origin__pull {
  font-family: var(--font-display);
  font-size: var(--about-pull-size);
  line-height: 1.35;
  margin: 0 0 24px;
  padding-left: 20px;
  border-left: 4px solid var(--orange);
}
.page-about .about-origin__pull em {
  color: var(--orange-light);
  font-style: normal;
}
.page-about .about-origin__points {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-about .about-origin__points li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  color: var(--mist);
}
.page-about .about-origin__points .badge {
  background: rgba(57, 255, 20, 0.1);
  border: 1px solid rgba(57, 255, 20, 0.3);
  color: var(--green);
  font-family: var(--font-data);
  font-size: 12px;
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}
.page-about .about-origin__media {
  position: relative;
  margin: 0 16px 16px 0;
}
.page-about .about-origin__media::before {
  content: "";
  position: absolute;
  left: 16px;
  right: -16px;
  top: 16px;
  bottom: -16px;
  background: var(--orange);
  border-radius: var(--radius-lg);
  opacity: 0.18;
  z-index: 0;
}
.page-about .about-origin__media-frame {
  position: relative;
  z-index: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--blue-mid);
  border: 1px solid var(--line);
}
.page-about .about-origin__media-frame::after {
  content: "";
  position: absolute;
  right: 16px;
  top: 16px;
  width: 48px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--green);
  opacity: 0.8;
}
.page-about .about-origin__media-caption {
  margin-top: 20px;
  padding-left: 8px;
}

/* ---------- 里程碑 ---------- */
.page-about .about-milestones {
  padding: 72px 0;
}
.page-about .about-milestones__note {
  margin-top: 32px;
  text-align: center;
}
.page-about .about-timeline {
  list-style: none;
  margin: 48px 0 0;
  padding: 0;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), var(--green));
  opacity: 0.42;
}
.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 40px 56px;
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 8px;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 32px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--blue-deep);
  border: 3px solid var(--orange);
  box-shadow: 0 0 0 5px rgba(255, 106, 0, 0.12);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.page-about .about-timeline__item:hover::before {
  transform: scale(1.25);
  box-shadow: 0 0 0 8px rgba(57, 255, 20, 0.2);
}
.page-about .about-timeline__inner {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.page-about .about-timeline__item:hover .about-timeline__inner {
  transform: translateX(4px);
  border-color: rgba(57, 255, 20, 0.35);
}
.page-about .about-timeline__item--current .about-timeline__inner {
  border-color: rgba(57, 255, 20, 0.4);
  background: linear-gradient(180deg, rgba(57, 255, 20, 0.04), var(--surface));
}
.page-about .about-timeline__tag {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}
.page-about .about-timeline__title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 12px;
  font-size: 22px;
}
.page-about .about-timeline__ver {
  font-family: var(--font-data);
  color: var(--orange);
  font-size: 0.78em;
}
.page-about .about-timeline__item--current .about-timeline__ver {
  color: var(--green);
}
.page-about .about-timeline__desc {
  margin: 0 0 16px;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.7;
}
.page-about .about-timeline__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-about .about-timeline__points li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.78);
}
.page-about .about-timeline__points li::before {
  content: "▸";
  position: absolute;
  left: 0;
  top: 3px;
  color: var(--green);
  font-size: 12px;
}

/* ---------- 数据驱动文化 ---------- */
.page-about .about-data {
  position: relative;
  padding: 72px 0;
  background: linear-gradient(180deg, rgba(57, 255, 20, 0.05), rgba(10, 30, 60, 0.45));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.page-about .about-data::before {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(57, 255, 20, 0.16);
  border-radius: 50%;
  pointer-events: none;
}
.page-about .about-data::after {
  content: "";
  position: absolute;
  left: 4%;
  top: 50px;
  width: 180px;
  height: 1px;
  background: linear-gradient(90deg, var(--green), transparent);
  opacity: 0.3;
  pointer-events: none;
}
.page-about .about-data__grid {
  display: grid;
  gap: 40px;
  margin-top: 44px;
}
.page-about .about-data__text h3 {
  margin: 0 0 16px;
  font-size: 24px;
}
.page-about .about-data__steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-about .about-data__steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: 14px;
  color: var(--mist);
}
.page-about .about-data__steps span {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--green);
}
.page-about .about-data__stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.page-about .about-data__stat {
  background: var(--blue-mid);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  position: relative;
  overflow: hidden;
  transition: border-color 0.25s ease, transform 0.25s ease;
}
.page-about .about-data__stat:hover {
  border-color: rgba(57, 255, 20, 0.4);
  transform: translateY(-3px);
}
.page-about .about-data__stat-label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mist);
  text-transform: uppercase;
}
.page-about .about-data__stat-num {
  font-family: var(--font-data);
  font-size: var(--about-stat-size);
  line-height: 1;
  color: var(--green);
  margin: 12px 0 8px;
}
.page-about .about-data__stat-num span {
  font-family: var(--font-body);
  font-size: 0.5em;
  color: var(--mist);
  margin-left: 6px;
}
.page-about .about-data__stat-meta {
  margin: 0;
  font-size: 13px;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.6);
}
.page-about .about-data__media {
  margin-top: 48px;
  display: grid;
  gap: 14px;
}
.page-about .about-data__media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

/* ---------- 未来方向 ---------- */
.page-about .about-future {
  padding: 72px 0;
}
.page-about .about-future__intro {
  max-width: 560px;
  margin-top: 24px;
}
.page-about .about-future__cards {
  counter-reset: future-card;
  display: grid;
  gap: 20px;
  margin: 40px 0 48px;
}
.page-about .about-future__card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius-lg) + 6px);
  padding: 28px;
  transition: transform 0.25s ease, border-color 0.25s ease;
  overflow: hidden;
}
.page-about .about-future__card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
}
.page-about .about-future__card::before {
  counter-increment: future-card;
  content: "0" counter(future-card);
  display: block;
  margin-bottom: 20px;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--green);
  opacity: 0.5;
}
.page-about .about-future__card h3 {
  margin: 0 0 10px;
  font-size: 20px;
}
.page-about .about-future__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}
.page-about .about-future__masthead {
  border-radius: calc(var(--radius-lg) + 8px);
  overflow: hidden;
  border: 1px solid var(--line);
}
.page-about .about-future__masthead .caption {
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: var(--blue-mid);
}

/* ---------- 底部内链 ---------- */
.page-about .about-links {
  padding: 72px 0;
  background: var(--blue-mid);
  border-top: 1px solid var(--line);
}
.page-about .about-links__grid {
  display: grid;
  gap: 16px;
  margin-top: 40px;
}
.page-about .about-links__card {
  display: block;
  padding: 28px 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: background 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}
.page-about .about-links__card:hover {
  background: var(--surface-strong);
  border-color: var(--orange);
  transform: translateY(-3px);
}
.page-about .about-links__card p {
  margin: 12px 0 0;
  color: var(--mist);
  font-size: 14px;
  line-height: 1.6;
}
.page-about .about-links__card .exhibition-label {
  color: var(--green);
}
.page-about .about-links__card:focus-visible,
.page-about .about-hero__index a:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-about .about-data__stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 640px) {
  .page-about .about-links__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    gap: 72px;
  }

  .page-about .about-timeline::before {
    left: 50%;
    transform: translateX(-1px);
  }
  .page-about .about-timeline__item {
    width: 50%;
    padding: 0 64px 56px 0;
  }
  .page-about .about-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 56px 64px;
  }
  .page-about .about-timeline__item::before {
    left: auto;
    right: -10px;
    top: 30px;
  }
  .page-about .about-timeline__item:nth-child(even)::before {
    right: auto;
    left: -10px;
  }
  .page-about .about-timeline__item:hover .about-timeline__inner {
    transform: translateY(-4px);
  }

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

@media (min-width: 960px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 64px;
  }
  .page-about .about-hero::before {
    width: 520px;
    height: 560px;
  }
  .page-about .about-hero__vertical {
    display: block;
  }

  .page-about .about-data__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 56px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-about .about-links__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}