/* ===== 品牌档案页专属样式 ===== */
.page-about .breadcrumbs {
  margin: 0 auto;
  max-width: var(--container-width);
  padding: 18px var(--container-pad) 0;
}

/* 英雄区 */
.page-about__hero {
  position: relative;
  overflow: hidden;
  padding: 40px var(--container-pad) 48px;
}

.page-about__hero::before {
  content: "";
  pointer-events: none;
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 15%, rgba(0, 255, 136, 0.14), transparent 40%),
    linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg) 100%);
}

.page-about__hero-inner {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.page-about__hero-copy h1 {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(2rem, 6vw, 3.25rem);
  line-height: 1.18;
  letter-spacing: 0.03em;
  color: var(--color-text);
}

.page-about__hero-lead {
  margin: 0;
  max-width: 520px;
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.75;
}

.page-about__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

.page-about__hero-panel {
  position: relative;
  overflow: hidden;
  min-height: 240px;
  background-color: var(--color-bg-lighter);
  background-image:
    linear-gradient(rgba(0, 255, 136, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 136, 0.06) 1px, transparent 1px);
  background-size: 26px 26px;
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about__panel-svg {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 200px;
  height: 200px;
  opacity: 0.6;
}

.page-about__panel-code {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 10px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--color-accent);
  background: rgba(0, 255, 136, 0.1);
  border: 1px solid var(--color-accent-border);
}

.page-about__panel-corner {
  position: absolute;
  left: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border-left: 3px solid var(--color-orange);
  border-bottom: 3px solid var(--color-orange);
}

.page-about__panel-scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
  animation: pageAboutScan 3.6s var(--ease-power) infinite alternate;
}

@keyframes pageAboutScan {
  from { top: 8%; opacity: 0.6; }
  50% { opacity: 1; }
  to { top: 90%; opacity: 0.8; }
}

/* 主体布局 */
.page-about__layout {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 auto;
  max-width: var(--container-width);
  padding: 24px var(--container-pad) 60px;
}

.page-about__aside {
  position: relative;
  z-index: 1;
}

.page-about__toc-label {
  margin: 0;
  padding: 12px 14px 6px;
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.page-about__main {
  min-width: 0;
}

/* 章节通用 */
.page-about__section {
  padding: 36px 0 44px;
  scroll-margin-top: calc(var(--header-height) + 12px);
}

.page-about__section--timeline,
.page-about__section--creds,
.page-about__section--contact {
  border-top: 1px solid var(--color-border);
}

.page-about__section--timeline {
  margin-top: 24px;
}

/* 品牌宣言 */
.page-about__mission-grid {
  display: grid;
  gap: 24px;
  align-items: start;
}

.page-about__mission-copy h2,
.page-about__timeline-header h2,
.page-about__creds-header h2,
.page-about__team-copy h2,
.page-about__contact-copy h2 {
  margin: 8px 0 16px;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  line-height: 1.3;
  color: var(--color-text);
}

.page-about__mission-copy > p {
  margin: 0 0 16px;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.page-about__mission-copy h3 {
  margin: 24px 0 12px;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-text);
}

.page-about__mission-link {
  margin-top: 20px;
}

.page-about__statement {
  margin: 24px 0;
  padding: 16px 20px;
  border-left: 3px solid var(--color-accent);
  background: rgba(0, 255, 136, 0.06);
  color: var(--color-text);
  font-weight: 600;
  line-height: 1.7;
}

.page-about__value-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about__value-list li {
  padding: 12px 16px;
  background: var(--color-bg-lighter);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.page-about__value-list strong {
  color: var(--color-text);
  font-weight: 600;
  margin-right: 4px;
}

.page-about__mission-media,
.page-about__timeline-media,
.page-about__team-media {
  margin: 0;
}

.page-about__mission-media img,
.page-about__timeline-media img,
.page-about__team-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
}

.page-about__mission-media figcaption {
  margin-top: 8px;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* 发展历程 */
.page-about__timeline-header {
  margin-bottom: 24px;
}

.page-about__timeline-grid {
  display: grid;
  gap: 24px;
}

.page-about__timeline-list {
  position: relative;
  padding-left: 36px;
}

.page-about__timeline-list::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-border) 100%);
}

.page-about__tl-item {
  position: relative;
  margin-bottom: 28px;
}

.page-about__tl-item:last-child {
  margin-bottom: 0;
}

.page-about__tl-node {
  position: absolute;
  left: -32px;
  top: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg-deep);
  border: 2px solid var(--color-accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.12), 0 0 10px var(--glow-green);
}

.page-about__tl-node svg {
  display: block;
  width: 6px;
  height: 6px;
}

.page-about__tl-card {
  padding: 18px 20px;
  background: var(--color-bg-lighter);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-accent);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
  transition: transform var(--transition-fast) var(--ease-power), box-shadow var(--transition-fast) var(--ease-power);
}

.page-about__tl-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-panel), 0 0 16px var(--glow-green);
}

.page-about__tl-year {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.page-about__tl-card h3 {
  margin: 6px 0 8px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--color-text);
}

.page-about__tl-card p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 资质与认证 */
.page-about__creds-header {
  margin-bottom: 20px;
}

.page-about__cred-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about__cred-card {
  transition: transform var(--transition-base) var(--ease-power), box-shadow var(--transition-base) var(--ease-power);
}

.page-about__cred-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-panel), 0 0 18px var(--glow-green);
}

.page-about__cred-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 48px;
  padding: 4px 8px;
  margin-bottom: 12px;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--color-accent);
  background: rgba(0, 255, 136, 0.08);
  border: 1px solid var(--color-accent-border);
}

.page-about__cred-card h3 {
  margin: 8px 0;
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--color-text);
}

.page-about__cred-card p {
  margin: 0;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.page-about__cred-card strong {
  color: var(--color-text);
  font-weight: 600;
}

/* 团队与组织 */
.page-about__team-grid {
  display: grid;
  gap: 24px;
  align-items: center;
}

.page-about__team-copy > p,
.page-about__team-copy ul {
  color: var(--color-text-secondary);
  line-height: 1.75;
}

.page-about__team-list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about__team-list li {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  background: var(--color-bg-lighter);
  border-left: 3px solid var(--color-orange);
  color: var(--color-text-secondary);
}

.page-about__team-list li + li {
  border-left-color: var(--color-accent);
}

.page-about__team-list li span {
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.page-about__team-cta {
  margin-top: 20px;
}

.page-about__team-media {
  order: -1;
}

/* 联系我们 */
.page-about__contact-box {
  display: grid;
  gap: 20px;
  padding: 24px;
  background: var(--color-bg-lighter);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-panel);
}

.page-about__contact-copy > p {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.page-about__contact-copy a:not(.btn) {
  color: var(--color-accent);
}

.page-about__contact-facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-about__contact-facts div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
}

.page-about__contact-facts div:last-child {
  border-bottom: none;
}

.page-about__contact-facts dt {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.page-about__contact-facts dd {
  margin: 0;
  color: var(--color-text);
  font-weight: 500;
  text-align: right;
}

/* 小屏适配 */
@media (min-width: 640px) {
  .page-about__cred-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about__contact-box {
    padding: 32px;
  }
}

/* 桌面端布局 */
@media (min-width: 1024px) {
  .page-about__hero {
    padding: 64px var(--container-pad) 72px;
  }

  .page-about__hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 48px;
    align-items: center;
  }

  .page-about__hero-panel {
    min-height: 320px;
  }

  .page-about__layout {
    display: grid;
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding-top: 8px;
  }

  .page-about__aside {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }

  .page-about__section {
    padding: 52px 0 60px;
  }

  .page-about__mission-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
  }

  .page-about__timeline-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
  }

  .page-about__timeline-media {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }

  .page-about__team-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 40px;
  }

  .page-about__team-media {
    order: 0;
  }

  .page-about__contact-box {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 40px;
    align-items: center;
  }
}