/* ===== 页面级基础 ===== */
.page-about {
  --about-gold-soft: rgba(212, 160, 23, 0.16);
  background-color: var(--sand);
  overflow-x: hidden;
}

/* ===== 01 品牌叙事 ===== */
.page-about .about-story {
  position: relative;
  padding: 2rem 0 3.25rem;
  background:
    radial-gradient(circle at 88% 14%, rgba(212, 160, 23, 0.18) 0, transparent 240px),
    linear-gradient(150deg, rgba(27, 58, 91, 0.1) 0%, transparent 42%),
    repeating-linear-gradient(90deg, rgba(166, 25, 46, 0.03) 0 1px, transparent 1px 56px),
    var(--sand);
}

.page-about .about-story::after {
  content: "HISTORY ARCHIVE · EST. 2016";
  position: absolute;
  right: 18px;
  bottom: 8px;
  font-family: var(--font-accent);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.24em;
  color: rgba(166, 25, 46, 0.42);
  pointer-events: none;
}

.page-about .breadcrumb {
  margin-bottom: 2rem;
}

.page-about .about-story__grid {
  display: grid;
  gap: 2.25rem;
  align-items: center;
}

.page-about .about-story__kicker {
  margin: 0 0 1.1rem;
}

.page-about .about-story h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.15rem, 5vw, 3.7rem);
  font-weight: 900;
  line-height: 1.16;
  margin: 0 0 1.35rem;
  color: var(--ink);
}

.page-about .about-story h1 .about-story__title-accent {
  color: var(--crimson);
}

.page-about .about-story__text p {
  color: #1f2e3f;
  line-height: 1.8;
}

.page-about .about-story__lead {
  font-size: 1.12rem;
  font-weight: 500;
}

.page-about .about-story__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.5rem;
}

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

.page-about .about-story__visual::before {
  content: "";
  position: absolute;
  inset: 18px -16px -16px 18px;
  z-index: -1;
  border: 2px solid rgba(166, 25, 46, 0.22);
  transform: rotate(-1.6deg);
}

.page-about .about-story__figure {
  margin: 0;
  border: 6px solid var(--porcelain);
  background: var(--porcelain);
  box-shadow: 12px 16px 32px rgba(27, 58, 91, 0.18);
  transform: rotate(1.1deg);
}

.page-about .about-story__figure img {
  width: 100%;
  display: block;
}

.page-about .about-story__caption {
  margin: 0.85rem 0.2rem 0;
  font-family: var(--font-accent);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--navy);
}

/* ===== 02 发展时间轴 ===== */
.page-about .about-timeline {
  position: relative;
  padding: 3.25rem 0 4rem;
  background: linear-gradient(180deg, rgba(232, 211, 169, 0.35), var(--sand) 120px);
}

.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(212, 160, 23, 0.4);
}

.page-about .about-section-head .index-number {
  font-family: var(--font-accent);
  font-size: 2.7rem;
  line-height: 0.95;
  font-weight: 700;
  color: var(--crimson);
  opacity: 0.38;
}

.page-about .about-section-head__copy {
  flex: 1;
}

.page-about .about-section-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 900;
  margin: 0 0 0.3rem;
  color: var(--ink);
}

.page-about .about-section-head p {
  margin: 0;
  color: var(--navy);
  font-size: 0.93rem;
  line-height: 1.6;
}

.page-about .about-timeline__layout {
  display: grid;
  gap: 2rem;
}

.page-about .about-timeline__aside {
  position: relative;
  max-width: 300px;
  margin-left: 2.5rem;
  padding: 0.8rem;
  background: rgba(253, 251, 247, 0.72);
  border: 1px solid rgba(27, 58, 91, 0.14);
  box-shadow: var(--shadow-soft);
  transform: rotate(-1.4deg);
}

.page-about .about-timeline__aside::before {
  content: "";
  position: absolute;
  inset: 0.75rem -0.6rem -0.6rem 0.75rem;
  z-index: -1;
  background: rgba(212, 160, 23, 0.12);
  transform: rotate(-2deg);
}

.page-about .about-timeline__aside figure {
  margin: 0;
}

.page-about .about-timeline__aside img {
  width: 100%;
  display: block;
}

.page-about .about-timeline__aside-caption {
  margin: 0.6rem 0.15rem 0;
  font-family: var(--font-accent);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--navy);
}

.page-about .about-timeline__rail {
  position: relative;
  padding-left: 2.5rem;
}

.page-about .about-timeline__rail::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 10px;
  width: 2px;
  background: linear-gradient(180deg, rgba(212, 160, 23, 0.95), rgba(212, 160, 23, 0.12));
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: 2.6rem;
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0.4rem;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 5px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), #e8d3a9);
  border: 3px solid var(--porcelain);
  box-shadow: 0 0 0 2px rgba(212, 160, 23, 0.4);
  transition: background 0.4s ease, box-shadow 0.4s ease, transform 0.4s ease;
}

.page-about .about-timeline__year {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-bottom: 0.5rem;
}

.page-about .about-timeline__year-num {
  font-family: var(--font-accent);
  font-size: 1.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--gold);
  text-shadow: 1px 1px 0 rgba(253, 251, 247, 0.8);
}

.page-about .about-timeline__year-label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--crimson);
  background: var(--about-gold-soft);
  padding: 0.12rem 0.55rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.page-about .about-timeline__card {
  border-left: 3px solid var(--gold);
  background: rgba(253, 251, 247, 0.96);
  padding: 1.05rem 1.1rem 1.15rem;
  border-radius: 4px;
  transition: transform 0.45s ease, box-shadow 0.45s ease, border-color 0.45s ease;
}

.page-about .about-timeline__card h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-heading);
  font-size: 1.12rem;
  font-weight: 900;
  color: var(--ink);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.72;
  color: #303030;
}

.page-about .about-timeline__item:hover .about-timeline__card,
.page-about .about-timeline__item:focus-within .about-timeline__card {
  border-left-color: var(--crimson);
  box-shadow: var(--shadow-lift);
  transform: translateY(-4px) rotate(0.4deg);
}

.page-about .about-timeline__item:hover::before,
.page-about .about-timeline__item:focus-within::before {
  background: var(--crimson);
  box-shadow: 0 0 0 4px rgba(166, 25, 46, 0.22);
  transform: scale(1.15);
}

/* ===== 03 核心理念 ===== */
.page-about .about-values {
  padding: 3.5rem 0 4rem;
  background: linear-gradient(160deg, rgba(27, 58, 91, 0.06), transparent 240px), var(--stone);
}

.page-about .about-values__grid {
  gap: 1.25rem;
}

.page-about .about-values__item {
  position: relative;
  padding: 1.8rem 1.3rem 1.6rem;
  border-top: 4px solid var(--gold);
  background: rgba(253, 251, 247, 0.9);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.page-about .about-values__item::after {
  content: "";
  position: absolute;
  right: -28px;
  bottom: -36px;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 160, 23, 0.14), transparent 68%);
}

.page-about .about-values__num {
  font-family: var(--font-accent);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--crimson);
  letter-spacing: 0.18em;
}

.page-about .about-values__item h3 {
  margin: 0.55rem 0 0.6rem;
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 900;
  color: var(--ink);
}

.page-about .about-values__item p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.75;
  color: #2b2b2b;
}

/* ===== 04 团队与文化 ===== */
.page-about .about-team {
  padding: 3.5rem 0 3rem;
  background: var(--porcelain);
}

.page-about .about-team__grid {
  display: grid;
  gap: 2.5rem;
}

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

.page-about .about-team__visual::before {
  content: "团队 · 档案";
  position: absolute;
  top: -12px;
  left: 18px;
  z-index: 3;
  padding: 0.22rem 0.7rem;
  background: var(--gold);
  color: var(--ink);
  font-family: var(--font-accent);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  box-shadow: 0 3px 10px rgba(26, 26, 26, 0.14);
}

.page-about .about-team__visual::after {
  content: "";
  position: absolute;
  right: -14px;
  bottom: -14px;
  width: 62%;
  height: 62%;
  z-index: 0;
  border: 2px solid rgba(27, 58, 91, 0.16);
  background: repeating-linear-gradient(45deg, rgba(27, 58, 91, 0.04) 0 6px, transparent 6px 12px);
}

.page-about .about-team__primary {
  position: relative;
  z-index: 1;
  margin: 0;
  border: 8px solid var(--porcelain);
  box-shadow: var(--shadow-lift);
  transform: rotate(-1.2deg);
}

.page-about .about-team__primary img {
  width: 100%;
  display: block;
}

.page-about .about-team__content {
  font-size: 0.95rem;
  line-height: 1.8;
  color: #262626;
}

.page-about .about-team__content > p {
  margin: 0 0 1.1rem;
}

.page-about .about-team__list {
  list-style: none;
  margin: 1.4rem 0;
  padding: 0;
  border-top: 1px solid rgba(27, 58, 91, 0.14);
}

.page-about .about-team__list li {
  display: grid;
  grid-template-columns: 7.4rem 1fr;
  gap: 0.8rem;
  padding: 0.8rem 0;
  border-bottom: 1px solid rgba(27, 58, 91, 0.1);
}

.page-about .about-team__list li strong {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--crimson);
}

.page-about .about-team__list li span {
  color: #333;
}

.page-about .about-team__coop {
  background: rgba(232, 211, 169, 0.4);
  border-left: 4px solid var(--gold);
  padding: 0.9rem 1rem;
}

.page-about .about-team__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin: 1.4rem 0 0.8rem;
}

.page-about .about-team__note {
  font-size: 0.9rem;
}

.page-about .about-team__note a {
  color: var(--crimson);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ===== 桌面增强 ===== */
@media (min-width: 820px) {
  .page-about .about-story {
    padding: 3.25rem 0 4rem;
  }

  .page-about .about-story__grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: 3.25rem;
  }

  .page-about .about-timeline__layout {
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    align-items: start;
  }

  .page-about .about-timeline__aside {
    margin-left: 0;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-about .about-timeline__rail {
    padding-left: 0;
  }

  .page-about .about-timeline__rail::before {
    left: 50%;
    margin-left: -1px;
  }

  .page-about .about-timeline__item {
    width: calc(50% - 68px);
    padding-bottom: 3.2rem;
  }

  .page-about .about-timeline__item:nth-child(odd) {
    margin-right: auto;
    text-align: right;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: auto;
    text-align: left;
  }

  .page-about .about-timeline__item::before {
    left: auto;
    right: -76px;
    top: 8px;
  }

  .page-about .about-timeline__item:nth-child(even)::before {
    left: -76px;
    right: auto;
  }

  .page-about .about-timeline__item:nth-child(odd) .about-timeline__year {
    justify-content: flex-end;
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__year {
    justify-content: flex-start;
  }

  .page-about .about-timeline__card {
    padding: 1.2rem 1.3rem 1.3rem;
  }

  .page-about .about-timeline__card p {
    font-size: 0.95rem;
  }

  .page-about .about-values__item {
    padding: 2rem 1.5rem 1.8rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-team__grid {
    grid-template-columns: 0.92fr 1.08fr;
    gap: 3rem;
    align-items: center;
  }
}

/* ===== 动效偏好：减少动效 ===== */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-story__figure,
  .page-about .about-timeline__aside,
  .page-about .about-team__primary {
    transform: none;
  }

  .page-about .about-timeline__card,
  .page-about .about-timeline__item::before {
    transition: none;
  }

  .page-about .about-timeline__item:hover .about-timeline__card,
  .page-about .about-timeline__item:focus-within .about-timeline__card {
    transform: none;
  }
}