/* ====== 品牌档案（company）页面专属样式 ====== */

.page-about {
  background: var(--navy-deep);
  color: var(--cream);
  min-height: 100vh;
  overflow-x: hidden;
}

.page-about .about-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: clamp(1rem, 4vw, 4rem);
  padding-top: clamp(2rem, 5vw, 4rem);
}

/* —— 面包屑 —— */
.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  color: var(--mist);
  margin-bottom: clamp(2rem, 5vw, 4rem);
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  transition: color var(--speed) var(--ease);
}

.page-about .breadcrumb a:hover {
  color: var(--gold);
}

.page-about .breadcrumb-sep {
  color: var(--steel);
}

.page-about .breadcrumb-current {
  color: var(--cream);
}

/* —— 首屏标题 —— */
.page-about .about-hero {
  position: relative;
  margin-bottom: clamp(3.5rem, 7vw, 6rem);
  padding-left: clamp(1rem, 3vw, 2.5rem);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--gold), var(--orange));
}

.page-about .about-hero-index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.28em;
  color: var(--orange);
  margin-bottom: 1.1rem;
  text-transform: uppercase;
}

.page-about .about-hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 5vw, 4.2rem);
  line-height: 1.06;
  margin: 0 0 1.4rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--cream);
}

.page-about .about-lead {
  font-family: var(--font-body);
  font-size: 1.12rem;
  line-height: 1.85;
  color: var(--mist);
  max-width: 46rem;
  margin: 0;
}

/* —— 主体网格 —— */
.page-about .about-body {
  display: grid;
  grid-template-columns: 230px minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: start;
}

.page-about .about-index {
  position: sticky;
  top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--steel);
}

.page-about .about-index-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.24em;
  color: var(--mist);
  text-transform: uppercase;
  margin-bottom: 0.9rem;
}

.page-about .about-index-item {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  padding: 0.7rem 0.4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--mist);
  text-decoration: none;
  transition: color var(--speed) var(--ease), padding-left var(--speed) var(--ease);
}

.page-about .about-index-item:hover {
  color: var(--cream);
  padding-left: 0.7rem;
}

.page-about .about-index-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--gold);
  white-space: nowrap;
}

.page-about .about-index-text {
  font-size: 0.92rem;
  line-height: 1.4;
}

/* —— 内容列 —— */
.page-about .about-main {
  min-width: 0;
}

.page-about .about-section {
  margin-bottom: clamp(4rem, 9vw, 7rem);
  scroll-margin-top: 2rem;
}

.page-about .section-head {
  display: flex;
  gap: 1rem;
  align-items: baseline;
  border-bottom: 1px solid var(--steel);
  padding-bottom: 0.9rem;
  margin-bottom: 2rem;
}

.page-about .section-index {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .section-head h2 {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  line-height: 1.15;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  color: var(--cream);
}

.page-about .about-anchor {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(31, 182, 200, 0.4);
  transition: color var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .about-anchor:hover {
  color: var(--gold);
  border-color: var(--gold);
}

/* —— SEC/01 演进介绍 —— */
.page-about .journey-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
  margin-bottom: 3rem;
}

.page-about .journey-copy p {
  margin: 0 0 1.2rem;
  line-height: 1.85;
}

.page-about .journey-facts {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.8rem;
}

.page-about .journey-facts li {
  border-left: 2px solid var(--gold);
  padding-left: 0.7rem;
}

.page-about .journey-facts strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--gold);
  line-height: 1.4;
}

.page-about .journey-facts span {
  font-size: 0.85rem;
  color: var(--mist);
}

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

.page-about .journey-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: polygon(0 0, calc(100% - 28px) 0, 100% 28px, 100% 100%, 0 100%);
}

/* —— SEC/01 时间线 —— */
.page-about .timeline-block {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 2rem;
  align-items: end;
}

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

.page-about .timeline-item {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 1.8rem;
}

.page-about .timeline-item::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 2rem;
  bottom: -1.8rem;
  width: 1px;
  background: var(--steel);
}

.page-about .timeline-item:last-child::before {
  display: none;
}

.page-about .timeline-dot {
  position: absolute;
  left: 3px;
  top: 0.6rem;
  width: 11px;
  height: 11px;
  background: var(--orange);
  transform: rotate(45deg);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.15);
}

.page-about .timeline-card {
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.03), transparent);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-left: 3px solid var(--gold);
  padding: 1.2rem 1.4rem;
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-about .timeline-item:hover .timeline-card {
  border-color: var(--gold);
  background: rgba(212, 175, 55, 0.06);
}

.page-about .timeline-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  color: var(--orange);
  text-transform: uppercase;
  margin-bottom: 0.4rem;
}

.page-about .timeline-card h3 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin: 0 0 0.5rem;
}

.page-about .timeline-card p {
  margin: 0 0 0.7rem;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .timeline-snapshot {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.35);
  padding: 0.25rem 0.5rem;
  transition: background var(--speed) var(--ease), color var(--speed) var(--ease);
}

.page-about .timeline-item:hover .timeline-snapshot {
  background: var(--gold);
  color: var(--navy);
}

.page-about .archive-figure {
  margin: 0;
  align-self: end;
}

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

/* —— SEC/02 数据能力 —— */
.page-about .section-lead {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--mist);
  margin: 0 0 2rem;
  max-width: 60rem;
}

.page-about .data-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.page-about .data-card {
  position: relative;
  background: linear-gradient(160deg, var(--navy), var(--navy-deep) 70%);
  padding: 1.5rem 1.2rem 1.4rem;
  border-top: 3px solid var(--orange);
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-about .data-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-transform: uppercase;
  margin-bottom: 0.8rem;
}

.page-about .data-value {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  color: var(--cream);
  line-height: 1.1;
  margin-bottom: 0.6rem;
}

.page-about .data-value[data-accent="gold"] {
  color: var(--gold);
}

.page-about .data-value[data-accent="orange"] {
  color: var(--orange);
}

.page-about .data-note {
  font-size: 0.85rem;
  color: var(--mist);
}

/* —— SEC/02 文件夹索引 —— */
.page-about .arch-folders {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 2.5rem;
}

.page-about .folder-tab {
  background: rgba(10, 31, 68, 0.5);
  padding: 1.4rem 1.1rem 1.2rem;
  border-top: 3px solid var(--navy);
  transition: border-color var(--speed) var(--ease), transform var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-about .folder-tab:hover {
  border-top-color: var(--gold);
  transform: translateY(-4px);
  background: rgba(10, 31, 68, 0.9);
}

.page-about .folder-key {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.page-about .folder-tab h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin: 0 0 0.6rem;
}

.page-about .folder-tab p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--mist);
  line-height: 1.75;
}

/* —— SEC/03 团队 —— */
.page-about .team-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.page-about .team-module {
  position: relative;
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.5rem 1.3rem 1.3rem;
  background: rgba(10, 31, 68, 0.5);
  transition: background var(--speed) var(--ease), border-color var(--speed) var(--ease);
}

.page-about .team-module:hover {
  border-color: var(--gold);
  background: rgba(10, 31, 68, 0.9);
}

.page-about .team-code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--gold);
  margin-bottom: 0.5rem;
}

.page-about .team-module h3 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
}

.page-about .team-module p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--mist);
  line-height: 1.7;
}

/* —— SEC/04 备案与联系 —— */
.page-about .contact-layout {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 2rem;
  align-items: center;
}

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

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

.page-about .contact-record {
  display: grid;
  gap: 0.8rem;
}

.page-about .contact-record p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.page-about .contact-record .chip {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--gold);
  border: 1px solid rgba(212, 175, 55, 0.4);
  padding: 0.2rem 0.5rem;
}

.page-about .contact-note {
  font-size: 0.85rem;
  color: var(--mist);
  border-left: 3px solid var(--steel);
  padding-left: 1rem;
  margin-top: 0.5rem;
  max-width: 50rem;
}

/* —— 响应式 —— */
@media (max-width: 1000px) {
  .page-about .about-body {
    grid-template-columns: 1fr;
  }

  .page-about .about-index {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.2rem;
    border-top: 0;
    border-bottom: 1px solid var(--steel);
    padding: 0 0 1rem;
    margin-bottom: 2.5rem;
  }

  .page-about .about-index-label {
    display: none;
  }

  .page-about .about-index-item {
    border-bottom: 0;
    padding: 0.3rem 0.2rem;
  }

  .page-about .journey-grid,
  .page-about .contact-layout {
    grid-template-columns: 1fr;
  }

  .page-about .timeline-block {
    grid-template-columns: 1fr;
  }

  .page-about .archive-figure {
    max-width: 320px;
  }

  .page-about .data-board {
    grid-template-columns: 1fr;
  }

  .page-about .team-grid {
    grid-template-columns: 1fr;
  }

  .page-about .arch-folders {
    grid-template-columns: 1fr;
  }
}