/* ===== 品牌故事 · 页面专属 ===== */
.page-about {
  --about-panel: rgba(255, 255, 255, 0.035);
  --about-panel-border: rgba(255, 255, 255, 0.08);
  background: linear-gradient(180deg, var(--color-deep) 0%, var(--color-ink) 100%);
  color: var(--color-white);
}

/* ---------- Hero 品牌叙事 ---------- */
.page-about .about-hero {
  position: relative;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px) 0 0 / 100% 56px,
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px) 0 0 / 56px 100%;
  opacity: 0.5;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-5) var(--space-5) var(--space-6);
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: var(--space-6);
}

.page-about .about-hero__grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  padding-top: var(--space-4);
}

@media (min-width: 901px) {
  .page-about .about-hero__grid {
    display: grid;
    grid-template-columns: 7fr 5fr;
    align-items: center;
    padding: var(--space-6) 0 var(--space-8);
  }
}

.page-about .about-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: var(--space-4);
}

.page-about .about-hero__kicker::before {
  content: "";
  display: block;
  width: 28px;
  height: 1px;
  background: var(--color-primary);
}

.page-about .about-hero h1 {
  font-family: var(--font-headline);
  font-size: clamp(38px, 7vw, 66px);
  font-weight: 900;
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-5);
}

.page-about .about-hero__title-accent {
  background: linear-gradient(90deg, var(--color-primary) 10%, var(--color-gold) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-about .about-hero__lead {
  max-width: 540px;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.8;
  margin: 0;
}

.page-about .about-hero__cta {
  margin-top: var(--space-6);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.page-about .about-hero__deco {
  display: none;
}

@media (min-width: 901px) {
  .page-about .about-hero__deco {
    display: block;
    justify-self: end;
    opacity: 0.9;
  }
}

.page-about .about-hero__figure {
  position: relative;
  z-index: 1;
  margin: 0;
}

.page-about .about-hero__figure::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 26%;
  height: 100%;
  background: linear-gradient(90deg, rgba(5, 10, 20, 0.5), transparent);
  z-index: 1;
  pointer-events: none;
}

.page-about .about-hero__figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 30%;
  height: 45%;
  background: linear-gradient(120deg, transparent, rgba(255, 107, 0, 0.12));
  pointer-events: none;
  z-index: 1;
}

.page-about .about-hero__figure img {
  display: block;
  width: 100%;
  height: 240px;
  object-fit: cover;
  object-position: center 40%;
}

@media (min-width: 601px) {
  .page-about .about-hero__figure img {
    height: 380px;
  }
}

@media (min-width: 901px) {
  .page-about .about-hero__figure img {
    height: 460px;
  }
}

/* Hero 数据速览带 */
.page-about .about-hero__stats {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  background: var(--color-ink);
  border-top: 1px solid rgba(255, 107, 0, 0.42);
}

@media (min-width: 641px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding: var(--space-5) var(--space-4);
  border-bottom: 1px solid var(--border-white-06);
}

.page-about .about-hero__stat:nth-child(odd) {
  border-right: 1px solid var(--border-white-06);
}

@media (min-width: 641px) {
  .page-about .about-hero__stat,
  .page-about .about-hero__stat:nth-child(odd) {
    border-right: 1px solid var(--border-white-06);
    border-bottom: none;
  }

  .page-about .about-hero__stat:last-child {
    border-right: none;
  }
}

.page-about .about-hero__stat-num {
  display: inline-flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-data);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-primary);
}

@media (min-width: 641px) {
  .page-about .about-hero__stat-num {
    font-size: 38px;
  }
}

.page-about .about-num-suffix {
  font-size: 0.52em;
  color: var(--color-gold);
  font-weight: 600;
}

.page-about .about-hero__stat-label {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

/* ---------- 使命与愿景 ---------- */
.page-about .about-mission {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-8);
}

.page-about .about-mission::before {
  content: "";
  position: absolute;
  top: 0;
  right: 8%;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(255, 107, 0, 0.08), transparent 68%);
  pointer-events: none;
}

.page-about .about-mission .section-heading,
.page-about .about-values .section-heading,
.page-about .about-ecosystem .section-heading {
  margin-bottom: var(--space-4);
}

.page-about .section-heading__kicker {
  margin-bottom: var(--space-3);
}

.page-about .section-heading__title {
  margin-bottom: 0;
}

.page-about .about-mission__grid {
  display: grid;
  gap: var(--space-5);
  margin-top: var(--space-6);
}

@media (min-width: 701px) {
  .page-about .about-mission__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-about .about-mission__card {
  position: relative;
  overflow: hidden;
  background: var(--about-panel);
  border: 1px solid var(--about-panel-border);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-5);
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

.page-about .about-mission__card::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s var(--ease-out);
}

.page-about .about-mission__card:hover {
  border-color: rgba(255, 107, 0, 0.42);
  transform: translateY(-2px);
}

.page-about .about-mission__card:hover::after {
  transform: scaleX(1);
}

.page-about .about-mission__index {
  display: block;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--color-primary);
}

.page-about .about-mission__card h3 {
  margin: var(--space-4) 0 var(--space-3);
  font-size: 30px;
  font-weight: 900;
  letter-spacing: 0.08em;
  color: var(--color-white);
}

.page-about .about-mission__card p {
  margin: 0;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-mission__quote {
  margin: var(--space-7) 0 0;
  padding: var(--space-5) var(--space-6);
  border-left: 3px solid var(--color-primary);
  background: linear-gradient(90deg, rgba(255, 107, 0, 0.1), rgba(255, 255, 255, 0.02));
  font-size: 17px;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.92);
}

@media (min-width: 901px) {
  .page-about .about-mission__quote {
    width: 86%;
    margin-top: var(--space-8);
    font-size: 19px;
  }
}

/* ---------- 发展里程碑 ---------- */
.page-about .about-timeline {
  position: relative;
  padding: var(--space-8) 0 var(--space-9);
  background: linear-gradient(180deg, rgba(5, 10, 20, 0.2), rgba(5, 10, 20, 0.72));
}

.page-about .about-timeline__wrap {
  max-width: 1060px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

@media (min-width: 901px) {
  .page-about .about-timeline .section-heading {
    margin-left: 96px;
  }
}

@media (min-width: 1100px) {
  .page-about .about-timeline .section-heading {
    margin-left: 224px;
  }
}

.page-about .timeline {
  position: relative;
  list-style: none;
  margin: var(--space-7) 0 0;
  padding: 0;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 107, 0, 0.65), rgba(255, 184, 0, 0.2) 80%, transparent);
}

@media (min-width: 901px) {
  .page-about .timeline::before {
    left: 28px;
  }
}

.page-about .timeline__item {
  display: grid;
  grid-template-columns: 16px 1fr;
  column-gap: var(--space-4);
  padding-bottom: var(--space-7);
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

@media (min-width: 901px) {
  .page-about .timeline__item {
    grid-template-columns: 56px 120px 1fr;
    column-gap: 24px;
    padding-bottom: var(--space-8);
  }
}

.page-about .timeline__marker {
  justify-self: center;
  margin-top: 14px;
  width: 12px;
  height: 12px;
  border: 2px solid var(--color-primary);
  border-radius: 2px;
  background: var(--color-ink);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(255, 107, 0, 0.08);
  transition: background 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
}

@media (min-width: 901px) {
  .page-about .timeline__marker {
    width: 14px;
    height: 14px;
    margin-top: 18px;
    box-shadow: 0 0 0 6px rgba(255, 107, 0, 0.08);
  }
}

.page-about .timeline__item:hover .timeline__marker,
.page-about .timeline__item:focus-within .timeline__marker {
  background: var(--color-primary);
  box-shadow: 0 0 16px rgba(255, 107, 0, 0.55);
}

.page-about .timeline__year {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

@media (min-width: 901px) {
  .page-about .timeline__year {
    flex-direction: column;
    align-items: flex-end;
    gap: var(--space-2);
    margin-bottom: 0;
    padding-top: 12px;
  }
}

.page-about .timeline__year-main {
  font-family: var(--font-data);
  font-size: 28px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--color-white);
}

@media (min-width: 901px) {
  .page-about .timeline__year-main {
    font-size: 36px;
    color: var(--color-gold);
  }
}

.page-about .timeline__year-tag {
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(255, 107, 0, 0.12);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--color-primary);
  white-space: nowrap;
}

.page-about .timeline__card {
  position: relative;
  background: var(--about-panel);
  border: 1px solid var(--about-panel-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  transition: border-color 0.3s var(--ease-out), transform 0.3s var(--ease-out);
}

@media (min-width: 901px) {
  .page-about .timeline__card {
    padding: var(--space-6);
  }
}

.page-about .timeline__item:hover .timeline__card,
.page-about .timeline__item:focus-within .timeline__card {
  border-color: rgba(255, 107, 0, 0.42);
  transform: translateY(-2px);
}

.page-about .timeline__title {
  margin: 0 0 var(--space-2);
  font-size: 18px;
  font-weight: 800;
  color: var(--color-white);
}

.page-about .timeline__brief {
  margin: 0 0 var(--space-2);
  color: var(--color-text-secondary);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .timeline__detail {
  margin: 0;
  color: var(--color-muted);
  font-size: 14px;
  line-height: 1.75;
}

@media (hover: hover) and (min-width: 901px) {
  .page-about .timeline__detail {
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transform: translateY(4px);
    transition: max-height 0.4s var(--ease-out), opacity 0.3s, transform 0.3s;
  }

  .page-about .timeline__item:hover .timeline__detail,
  .page-about .timeline__item:focus-within .timeline__detail {
    max-height: 180px;
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 数据与团队理念 ---------- */
.page-about .about-values {
  position: relative;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--space-8) var(--space-5) var(--space-9);
}

.page-about .about-values__grid {
  display: grid;
  gap: var(--space-6);
  margin-top: var(--space-6);
}

@media (min-width: 901px) {
  .page-about .about-values__grid {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    column-gap: var(--space-8);
  }
}

.page-about .about-values__list {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-values__item {
  position: relative;
  padding: var(--space-5);
  border-left: 2px solid rgba(255, 184, 0, 0.5);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: var(--about-panel);
  transition: background 0.25s, border-color 0.25s;
}

.page-about .about-values__item:hover {
  background: rgba(255, 107, 0, 0.07);
  border-left-color: var(--color-primary);
}

.page-about .about-values__item h3 {
  margin: 0 0 var(--space-2);
  font-size: 17px;
  font-weight: 800;
  color: var(--color-white);
}

.page-about .about-values__item p {
  margin: 0;
  color: var(--color-muted);
  font-size: 15px;
  line-height: 1.75;
}

.page-about .about-values__figure {
  position: relative;
  margin: 0;
}

.page-about .about-values__figure::before {
  content: "";
  position: absolute;
  inset: -8px -8px 12px 12px;
  border: 1px solid rgba(255, 184, 0, 0.22);
  border-radius: var(--radius-lg);
  z-index: -1;
}

.page-about .about-values__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .about-values__figure figcaption {
  margin-top: var(--space-3);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-tertiary);
}

/* ---------- 用户与生态 ---------- */
.page-about .about-ecosystem {
  position: relative;
  padding: var(--space-8) var(--space-5) var(--space-9);
  background: var(--color-ink);
}

.page-about .about-ecosystem__wrap {
  max-width: var(--content-max);
  margin: 0 auto;
}

.page-about .about-ecosystem__intro {
  margin: var(--space-2) 0 0;
  max-width: 640px;
  color: var(--color-muted);
  font-size: 16px;
  line-height: 1.75;
}

.page-about .about-ecosystem__stats {
  display: grid;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

@media (min-width: 641px) {
  .page-about .about-ecosystem__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

.page-about .about-ecosystem__stat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  overflow: hidden;
  padding: var(--space-6) var(--space-5);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.07);
  border-radius: var(--radius-md);
}

.page-about .about-ecosystem__stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-gold));
}

.page-about .about-ecosystem__num {
  font-family: var(--font-data);
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--color-white);
}

.page-about .about-ecosystem__num span {
  margin-left: 3px;
  font-size: 0.5em;
  font-weight: 600;
  color: var(--color-gold);
}

.page-about .about-ecosystem__label {
  font-size: 14px;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

.page-about .about-ecosystem__figure {
  position: relative;
  margin: var(--space-6) 0 0;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
}

.page-about .about-ecosystem__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-about .about-ecosystem__figure figcaption {
  position: absolute;
  right: var(--space-5);
  bottom: var(--space-4);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  background: rgba(5, 10, 20, 0.72);
  font-size: 12px;
  color: var(--color-muted);
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  position: relative;
  overflow: hidden;
  padding: var(--space-8) var(--space-5);
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary) 0%, #F04E23 100%);
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(5, 10, 20, 0.08) 1px, transparent 1px) 0 0 / 48px 48px,
    linear-gradient(90deg, rgba(5, 10, 20, 0.08) 1px, transparent 1px) 0 0 / 48px 48px;
}

.page-about .about-cta h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 var(--space-3);
  font-size: 30px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}

@media (min-width: 641px) {
  .page-about .about-cta h2 {
    font-size: 38px;
  }
}

.page-about .about-cta p {
  position: relative;
  z-index: 1;
  max-width: 420px;
  margin: 0 auto var(--space-5);
  color: rgba(5, 10, 20, 0.78);
  font-size: 16px;
  line-height: 1.7;
}

.page-about .about-cta__btn {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 32px;
  border-radius: 999px;
  background: var(--color-ink);
  border: 1px solid var(--color-ink);
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.25s var(--ease-out), box-shadow 0.25s var(--ease-out), background 0.25s;
}

.page-about .about-cta__btn:hover {
  transform: translateY(-2px);
  background: #101A2B;
  box-shadow: 0 8px 24px rgba(5, 10, 20, 0.3);
}