/* ===== 品牌档案 page-about 专属样式 ===== */

.page-about {
  --about-grid: rgba(30, 144, 255, 0.1);
  --about-green-glow: rgba(57, 255, 20, 0.25);
  background: var(--c-bg);
}

.page-about img {
  max-width: 100%;
  height: auto;
}

/* ---- 面包屑 ---- */

.page-about .imc-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  align-items: center;
  margin-bottom: 32px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-faint);
}

.page-about .imc-breadcrumb a {
  color: var(--c-text-dim);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-about .imc-breadcrumb a:hover,
.page-about .imc-breadcrumb a:focus-visible {
  color: var(--c-blue);
}

.page-about .imc-breadcrumb [aria-current="page"] {
  color: var(--c-green);
}

/* ---- Hero：品牌概述 ---- */

.page-about-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
}

.page-about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(var(--about-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--about-grid) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.page-about-hero__layout {
  display: grid;
  gap: 32px;
  align-items: center;
}

.page-about h1 {
  font-family: var(--font-head);
  font-size: clamp(28px, 5vw, 48px);
  line-height: 1.16;
  font-weight: 700;
  color: var(--c-text);
  margin: 0 0 20px;
}

.page-about h1 br {
  display: none;
}

.page-about h1 span {
  display: inline-block;
  transform: skewX(-6deg);
  transform-origin: left center;
  background: linear-gradient(95deg, var(--c-blue), var(--c-purple));
  color: var(--c-blue);
}

@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-about h1 span {
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
  }
}

.page-about-hero__lead {
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-dim);
  max-width: 560px;
  margin-bottom: 14px;
}

.page-about-hero__content > p {
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-faint);
  max-width: 560px;
  margin-bottom: 14px;
}

.page-about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 26px;
}

.page-about-hero__media {
  position: relative;
  max-width: 620px;
}

.page-about-hero__media::after {
  content: "";
  position: absolute;
  right: -10px;
  bottom: -10px;
  width: 58px;
  height: 58px;
  border-right: 2px solid var(--c-blue);
  border-bottom: 2px solid var(--c-green);
  opacity: 0.8;
}

.page-about-hero__media .imc-media {
  border: 1px solid var(--c-line-strong);
  background: var(--c-bg-panel);
}

/* Hero 数据统计 */

.page-about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-top: 48px;
  padding-top: 28px;
  border-top: 1px solid var(--c-line);
}

.page-about-hero__stat {
  position: relative;
  padding: 20px 16px 18px;
  background: linear-gradient(160deg, rgba(15, 32, 39, 0.92), rgba(10, 11, 16, 0.88));
  border-left: 2px solid var(--c-blue);
}

.page-about-hero__stat::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 26px;
  height: 2px;
  background: var(--c-green);
}

.page-about-hero__stat-index {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--c-text-faint);
}

.page-about-hero__stat-num {
  display: block;
  font-family: var(--font-data);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--c-green);
}

.page-about-hero__stat-num span {
  font-size: 12px;
  color: var(--c-text-dim);
  margin-left: 3px;
}

.page-about-hero__stat-label {
  display: block;
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--c-text-dim);
}

/* ---- 发展历程时间线 ---- */

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

.page-about-timeline__track {
  position: relative;
  max-width: 960px;
  margin: 36px auto 48px;
}

.page-about-timeline__track::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: linear-gradient(180deg, var(--c-blue), var(--c-purple), rgba(155, 89, 182, 0.08));
}

.page-about-timeline__item {
  position: relative;
  padding-left: 56px;
  padding-bottom: 36px;
}

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

.page-about-timeline__node {
  position: absolute;
  top: 8px;
  left: 0;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 2px solid var(--c-green);
  border-radius: 50%;
  background: var(--c-bg-deep);
  font-family: var(--font-data);
  font-size: 12px;
  font-weight: 700;
  color: var(--c-green);
  box-shadow: 0 0 18px var(--about-green-glow);
}

.page-about-timeline__card {
  position: relative;
  padding: 22px 22px 20px;
  background: linear-gradient(155deg, rgba(15, 32, 39, 0.92), rgba(5, 6, 10, 0.94));
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-blue);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
}

.page-about-timeline__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(30, 144, 255, 0.18);
  border-color: var(--c-line-strong);
}

.page-about-timeline__card .imc-tag {
  display: inline-block;
  margin-bottom: 12px;
}

.page-about-timeline__card h3 {
  margin-bottom: 10px;
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.45;
  color: var(--c-text);
}

.page-about-timeline__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-dim);
}

.page-about-timeline__media {
  max-width: 900px;
  margin: 40px auto 0;
}

.page-about-timeline__media .imc-media {
  border: 1px solid var(--c-line);
  background: var(--c-bg-panel);
}

/* ---- 技术优势 ---- */

.page-about-tech__grid {
  display: grid;
  gap: 18px;
  margin-top: 36px;
}

.page-about-tech__card {
  position: relative;
  padding: 26px 24px 24px;
  background: var(--c-bg-deep);
  border: 1px solid var(--c-line);
  overflow: hidden;
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about-tech__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--c-blue) 0 55%, var(--c-purple) 55% 100%);
}

.page-about-tech__card:hover {
  transform: translateY(-3px);
  border-color: var(--c-line-strong);
}

.page-about-tech__code {
  display: inline-block;
  margin-bottom: 14px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--c-green);
}

.page-about-tech__card h3 {
  margin-bottom: 10px;
  font-family: var(--font-head);
  font-size: 18px;
  line-height: 1.4;
  color: var(--c-text);
}

.page-about-tech__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-dim);
}

.page-about-tech__panel {
  display: grid;
  gap: 28px;
  margin-top: 44px;
  padding: 28px 24px;
  background: var(--c-bg-panel);
  border-left: 3px solid var(--c-purple);
}

.page-about-tech__panel-text h3 {
  margin-bottom: 12px;
  font-family: var(--font-head);
  font-size: 21px;
  line-height: 1.4;
  color: var(--c-text);
}

.page-about-tech__panel-text p {
  margin: 0 0 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--c-text-dim);
}

.page-about-tech__panel-text .imc-btn {
  margin-top: 4px;
}

.page-about-tech__panel-media .imc-media {
  border: 1px solid var(--c-line-strong);
  background: var(--c-bg-deep);
}

.page-about-tech__note {
  margin: 28px 0 0;
  padding: 14px 18px;
  border-left: 2px solid var(--c-green);
  background: rgba(57, 255, 20, 0.06);
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-text-dim);
}

/* ---- 资质与荣誉 ---- */

.page-about-cert__grid {
  display: grid;
  gap: 18px;
  margin-top: 36px;
}

.page-about-cert__item {
  display: flex;
  flex-direction: column;
  padding: 28px 24px;
  background: linear-gradient(170deg, rgba(15, 32, 39, 0.9), rgba(5, 6, 10, 0.96));
  border: 1px solid var(--c-line);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.page-about-cert__item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(30, 144, 255, 0.18);
  border-color: var(--c-line-strong);
}

.page-about-cert__badge {
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  color: var(--c-blue);
  transition: filter 0.2s ease;
}

.page-about-cert__badge svg {
  width: 100%;
  height: 100%;
}

.page-about-cert__item:hover .page-about-cert__badge {
  filter: drop-shadow(0 0 8px rgba(30, 144, 255, 0.6));
}

.page-about-cert__item h3 {
  margin-bottom: 12px;
  font-family: var(--font-head);
  font-size: 17px;
  line-height: 1.45;
  color: var(--c-text);
}

.page-about-cert__item p {
  flex: 1;
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-dim);
}

.page-about-cert__item .imc-tag {
  align-self: flex-start;
}

/* ---- 合作生态 ---- */

.page-about-eco__intro {
  max-width: 720px;
  margin: 28px 0 32px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--c-text-dim);
}

.page-about-eco__grid {
  display: grid;
  gap: 18px;
}

.page-about-eco__item {
  position: relative;
  padding: 28px 24px 30px;
  background: var(--c-bg-deep);
  border-left: 3px solid var(--c-purple);
  transition: transform 0.22s ease, border-color 0.22s ease;
}

.page-about-eco__item:hover {
  transform: translateY(-3px);
  border-color: var(--c-green);
}

.page-about-eco__index {
  display: block;
  margin-bottom: 14px;
  font-family: var(--font-data);
  font-size: 30px;
  font-weight: 700;
  color: var(--c-green);
}

.page-about-eco__item h3 {
  margin-bottom: 10px;
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--c-text);
}

.page-about-eco__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-text-dim);
}

.page-about-eco__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
  margin-top: 48px;
  padding: 32px 28px;
  background: linear-gradient(120deg, rgba(30, 144, 255, 0.18), rgba(155, 89, 182, 0.16) 60%, rgba(10, 11, 16, 0.7));
  border-left: 4px solid var(--c-blue);
}

.page-about-eco__cta h3 {
  margin-bottom: 8px;
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--c-text);
}

.page-about-eco__cta p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-dim);
}

.page-about-eco__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---- 响应式调整 ---- */

@media (min-width: 640px) {
  .page-about h1 br {
    display: block;
  }
}

@media (min-width: 768px) {
  .page-about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
  }

  .page-about-hero__stat-num {
    font-size: 34px;
  }

  .page-about-timeline__track::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about-timeline__item {
    width: calc(50% - 48px);
    padding-left: 0;
    padding-bottom: 52px;
  }

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

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

  .page-about-timeline__item:nth-child(odd) .page-about-timeline__node {
    left: auto;
    right: -69px;
  }

  .page-about-timeline__item:nth-child(even) .page-about-timeline__node {
    left: -69px;
  }

  .page-about-timeline__item:nth-child(odd) .page-about-timeline__card {
    border-left: 1px solid var(--c-line);
    border-right: 3px solid var(--c-blue);
  }
}

@media (min-width: 900px) {
  .page-about-hero__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: 56px;
  }

  .page-about-tech__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
  }

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

  .page-about-cert__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  .page-about-eco__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }
}