/* =========================================================
   品牌档案 · /company/
   Scope: .page-about
   ========================================================= */

/* ---------- 页面级变量与基础 ---------- */
.page-about {
  --about-glow: rgba(0, 255, 163, 0.16);
  --about-line: rgba(232, 240, 255, 0.14);
  background: var(--c-bg-light);
}

/* ---------- 首屏 Hero ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 36px 0 56px;
  background: linear-gradient(135deg, rgba(0, 255, 163, 0.1) 0%, transparent 42%),
              linear-gradient(180deg, var(--c-bg-dark) 0%, var(--c-bg-main) 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(var(--about-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.92), transparent 88%);
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  align-items: center;
  gap: 32px 0;
}

.page-about .about-hero__copy {
  min-width: 0;
}

.page-about .about-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.28;
  color: var(--c-text-dark);
}

.page-about .about-hero__tool {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--c-accent);
}

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

.page-about .about-hero__main {
  display: block;
  font-size: 30px;
}

.page-about .about-hero__lead {
  margin-bottom: 32px;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: rgba(232, 240, 255, 0.82);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 14px 18px;
  background: rgba(15, 45, 74, 0.72);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition);
}

.page-about .about-hero__stat:hover {
  border-color: var(--c-accent);
  transform: translateY(-2px);
}

.page-about .about-hero__stat strong {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--c-accent);
  animation: aboutNumRise 0.7s ease both;
}

.page-about .about-hero__stat:nth-child(2) strong { animation-delay: 0.08s; }
.page-about .about-hero__stat:nth-child(3) strong { animation-delay: 0.16s; }
.page-about .about-hero__stat:nth-child(4) strong { animation-delay: 0.24s; }

.page-about .about-hero__stat span {
  font-family: var(--font-head);
  font-size: 13px;
  color: var(--c-text-dark);
  opacity: 0.72;
}

.page-about .about-hero__media {
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-about .about-hero__img {
  width: 100%;
  max-width: 380px;
  height: auto;
  border-radius: 44px;
  object-fit: cover;
  border: 1px solid var(--about-line);
  box-shadow: 0 24px 80px var(--about-glow);
}

/* ---------- 主体两栏布局 ---------- */
.page-about .about-body {
  padding: 40px 0 72px;
  align-items: flex-start;
  gap: 32px 0;
}

/* 左侧目录：移动端横向滚动 */
.page-about .about-side__nav {
  display: flex;
  overflow-x: auto;
  gap: 8px;
  padding: 12px;
  background: var(--c-bg-light);
  border: 1px solid var(--c-line);
  border-radius: var(--radius-pill);
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-about .about-side__nav::-webkit-scrollbar {
  display: none;
}

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

.page-about .about-side__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-text-light);
  text-decoration: none;
  transition: background var(--transition), color var(--transition);
}

.page-about .about-side__link:hover {
  background: var(--c-bg-main);
  color: var(--c-text-dark);
}

.page-about .about-side__link:hover .about-side__idx {
  color: var(--c-accent);
}

.page-about .about-side__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-alert);
  transition: color var(--transition);
}

/* 右栏通用 section */
.page-about .about-main {
  min-width: 0;
}

.page-about .about-section {
  margin-bottom: 56px;
  scroll-margin-top: 128px;
}

.page-about .about-section__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 2px solid var(--c-line);
}

.page-about .about-section__idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 40px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-bg-dark);
  background: var(--c-accent);
}

.page-about .about-section__titles h2 {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 24px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--c-text-light);
}

.page-about .about-section__en {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-text-light);
  opacity: 0.55;
}

/* ---------- 01 平台使命 ---------- */
.page-about .about-mission__lead {
  margin-bottom: 28px;
  display: grid;
  gap: 12px;
}

.page-about .about-mission__lead p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-light);
}

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

.page-about .about-mission__card {
  padding: 24px 22px;
  background: linear-gradient(180deg, var(--c-bg-main), var(--c-bg-dark));
  border: 1px solid rgba(232, 240, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.page-about .about-mission__card:hover {
  transform: translateY(-4px);
  border-color: var(--c-accent);
  box-shadow: 0 16px 40px rgba(10, 28, 46, 0.28);
}

.page-about .about-mission__card-idx {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: 16px;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--c-bg-dark);
  background: var(--c-accent);
}

.page-about .about-mission__card h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--c-text-dark);
}

.page-about .about-mission__card p {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(232, 240, 255, 0.72);
}

.page-about .about-mission__link {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 2px solid rgba(0, 255, 163, 0.4);
  transition: border-color var(--transition);
}

.page-about .about-mission__link:hover {
  border-color: var(--c-accent);
}

/* ---------- 02 发展历程 ---------- */
.page-about .about-timeline__panel {
  position: relative;
  padding: 28px 20px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(232, 240, 255, 0.12);
  background:
    radial-gradient(ellipse at 80% 10%, rgba(0, 255, 163, 0.08), transparent 60%),
    linear-gradient(180deg, var(--c-bg-dark), var(--c-bg-main));
}

.page-about .about-timeline__panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--c-accent) 0%, var(--c-accent) 22%, transparent 22%, transparent 38%, var(--c-alert) 38%, var(--c-alert) 56%, transparent 56%);
  border-radius: var(--radius-pill) var(--radius-pill) 0 0;
}

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

.page-about .about-timeline__rail::before {
  content: "";
  position: absolute;
  left: 36px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-accent) 0%, var(--c-bg-mid) 55%, rgba(232, 240, 255, 0.18) 100%);
  border-radius: 2px;
}

.page-about .about-timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  margin-bottom: 20px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 31px;
  top: 24px;
  z-index: 1;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 0 4px rgba(0, 255, 163, 0.18);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

.page-about .about-timeline__item--warn::before {
  background: var(--c-alert);
  box-shadow: 0 0 0 4px rgba(255, 122, 26, 0.2);
}

.page-about .about-timeline__item:hover::before {
  transform: scale(1.25);
}

.page-about .about-timeline__node {
  padding-top: 18px;
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.04em;
}

.page-about .about-timeline__item--warn .about-timeline__year {
  color: var(--c-alert);
}

.page-about .about-timeline__card {
  padding: 16px 18px;
  background: rgba(15, 45, 74, 0.66);
  border: 1px solid rgba(232, 240, 255, 0.1);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.page-about .about-timeline__item:hover .about-timeline__card {
  transform: translateX(4px);
  border-color: var(--c-accent);
  box-shadow: 0 6px 20px rgba(0, 255, 163, 0.1);
}

.page-about .about-timeline__card h3 {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--c-text-dark);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(232, 240, 255, 0.72);
}

.page-about .about-timeline__figure {
  margin: 32px 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(232, 240, 255, 0.14);
}

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

.page-about .about-timeline__metrics {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid rgba(232, 240, 255, 0.12);
}

.page-about .about-metric {
  padding: 14px;
  background: rgba(15, 45, 74, 0.5);
  border-radius: var(--radius-sm);
  text-align: center;
}

.page-about .about-metric strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--c-accent);
  line-height: 1.1;
}

.page-about .about-metric span {
  font-family: var(--font-head);
  font-size: 12px;
  color: var(--c-text-dark);
  opacity: 0.7;
}

/* ---------- 03 团队与组织 ---------- */
.page-about .about-team__grid {
  gap: 32px 0;
  align-items: start;
}

.page-about .about-team__content p {
  margin: 0 0 24px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-text-light);
}

.page-about .about-team__departments {
  display: grid;
  gap: 14px;
}

.page-about .about-team__dept {
  padding: 18px 20px;
  background: var(--c-bg-light);
  border: 1px solid var(--c-line);
  border-left: 4px solid var(--c-accent);
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition);
}

.page-about .about-team__dept:hover {
  background: #ffffff;
  transform: translateX(3px);
}

.page-about .about-team__dept-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.page-about .about-team__dept-head strong {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 700;
  color: var(--c-bg-mid);
  letter-spacing: -0.02em;
}

.page-about .about-team__dept-head span {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--c-text-light);
}

.page-about .about-team__dept p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-light);
  opacity: 0.82;
}

.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
  border: 1px solid var(--c-line);
}

/* ---------- 04 资质与认可 ---------- */
.page-about .about-creds__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 28px;
}

.page-about .about-creds__cert {
  position: relative;
  padding: 32px 28px;
  background: linear-gradient(180deg, var(--c-bg-dark), var(--c-bg-main));
  border: 1px solid rgba(27, 79, 114, 0.6);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.page-about .about-creds__cert::before {
  content: "";
  position: absolute;
  inset: 8px;
  border: 1px dashed rgba(0, 255, 163, 0.28);
  border-radius: var(--radius-sm);
  pointer-events: none;
}

.page-about .about-creds__cert:hover {
  border-color: var(--c-accent);
  box-shadow: 0 12px 36px rgba(10, 28, 46, 0.28);
}

.page-about .about-creds__badge {
  display: inline-block;
  margin-bottom: 16px;
  padding: 4px 12px;
  border: 1px solid rgba(255, 122, 26, 0.4);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--c-alert);
}

.page-about .about-creds__cert h3 {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--c-text-dark);
}

.page-about .about-creds__cert p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: rgba(232, 240, 255, 0.78);
}

.page-about .about-creds__statement {
  padding: 20px 24px;
  background: rgba(0, 255, 163, 0.06);
  border-left: 4px solid var(--c-accent);
  border-radius: var(--radius-sm);
}

.page-about .about-creds__statement p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-light);
}

.page-about .about-creds__statement strong {
  font-family: var(--font-head);
  color: var(--c-bg-main);
}

/* ---------- 动画 ---------- */
@keyframes aboutNumRise {
  from {
    opacity: 0;
    transform: translateY(100%);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 桌面端增强 ---------- */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 48px 0 72px;
  }

  .page-about .about-hero__main {
    font-size: 38px;
  }

  .page-about .about-hero__tool {
    font-size: 18px;
  }

  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
  }

  .page-about .about-hero__stat strong {
    font-size: 30px;
  }

  .page-about .about-section__titles h2 {
    font-size: 28px;
  }

  .page-about .about-mission__trio {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-timeline__panel {
    padding: 40px 36px;
  }

  .page-about .about-timeline__metrics {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about .about-creds__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 992px) {
  .page-about .about-body {
    padding-top: 56px;
  }

  .page-about .about-side {
    position: sticky;
    top: 128px;
  }

  .page-about .about-side__nav {
    flex-direction: column;
    align-items: stretch;
    padding: 16px;
    border-radius: var(--radius-lg);
  }

  .page-about .about-side__label {
    display: block;
    padding: 4px 10px 10px;
    margin-bottom: 8px;
    border-bottom: 1px dashed var(--c-line);
    font-family: var(--font-mono);
    font-size: 12px;
    letter-spacing: 0.1em;
    color: var(--c-text-light);
    opacity: 0.6;
  }

  .page-about .about-side__link {
    white-space: normal;
    padding: 10px 12px;
  }

  .page-about .about-main {
    padding-left: 32px;
  }

  .page-about .about-timeline__item {
    margin-bottom: 24px;
  }

  .page-about .about-timeline__card {
    padding: 20px 24px;
  }
}

/* ---------- 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}