.page-about {
  --about-red: var(--color-passion-red);
  --about-gold: var(--color-gold);
  --about-cyan: var(--color-cyan);
  --about-deep: var(--color-deep-blue);
  --about-dark: var(--color-dark-base);
  --about-glass: rgba(255, 255, 255, 0.08);
  --about-timeline-x: 22px;
  overflow-x: hidden;
}

.page-about .container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space);
}

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

.page-about .about-breadcrumb {
  padding-top: calc(var(--header-height) + 24px);
  font-family: var(--font-number);
  font-size: 14px;
  color: var(--color-light-blue);
  letter-spacing: 0.04em;
}

.page-about .about-breadcrumb .breadcrumb__link {
  color: var(--color-light-blue);
  text-decoration: none;
  transition: color 0.25s ease;
}

.page-about .about-breadcrumb .breadcrumb__link:hover {
  color: var(--color-cyan);
}

.page-about .about-breadcrumb .breadcrumb__separator {
  margin: 0 8px;
  color: rgba(255, 255, 255, 0.3);
}

.page-about .about-breadcrumb .breadcrumb__item {
  color: var(--color-white);
}

/* ===== 首屏：框景式品牌展示 ===== */
.page-about .about-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  padding: 40px 0 72px;
  position: relative;
}

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

.page-about .about-hero__frame {
  position: relative;
  max-width: 420px;
  margin-inline: auto;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  inset: -14px auto auto -14px;
  width: 48px;
  height: 48px;
  border-top: 3px solid var(--color-passion-red);
  border-left: 3px solid var(--color-passion-red);
  z-index: 1;
  pointer-events: none;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  inset: auto -14px -14px auto;
  width: 48px;
  height: 48px;
  border-bottom: 3px solid var(--color-cyan);
  border-right: 3px solid var(--color-cyan);
  z-index: 1;
  pointer-events: none;
}

.page-about .about-hero__image {
  display: block;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
}

.page-about .about-hero__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: center;
  margin-top: 20px;
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--color-light-blue);
  letter-spacing: 0.06em;
}

.page-about .about-hero__meta-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.7);
}

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

.page-about .about-hero__title {
  margin-top: 16px;
  font-family: var(--font-headline);
  font-size: 32px;
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--color-white);
}

.page-about .about-hero__lead {
  margin-top: 16px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-light-blue);
  max-width: 56ch;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-about .about-hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.page-about .about-hero__trust-item {
  font-family: var(--font-number);
  font-size: 14px;
  color: var(--color-cyan);
  letter-spacing: 0.03em;
}

/* ===== 章节通用 ===== */
.page-about .chapter-section {
  position: relative;
  padding: 64px 0;
}

.page-about .chapter-section__header {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 36px;
}

.page-about .chapter-section__header > div {
  flex: 1;
}

.page-about .chapter-section__index {
  font-family: var(--font-headline);
  font-size: 40px;
  font-weight: 800;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--color-passion-red);
  text-stroke: 1px var(--color-passion-red);
  min-width: 72px;
  display: block;
  margin-top: 4px;
}

.page-about .chapter-section__title {
  font-family: var(--font-headline);
  font-size: 26px;
  line-height: 1.3;
  color: var(--color-white);
  margin: 0;
}

.page-about .chapter-section__lead {
  margin-top: 8px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-light-blue);
}

.page-about .chapter-section__body {
  position: relative;
}

/* ===== 01 品牌起源 ===== */
.page-about .about-story {
  background: linear-gradient(180deg, var(--color-deep-blue) 0%, rgba(11, 27, 61, 0.92) 100%);
  padding-top: 0;
}

.page-about .about-story__stripe {
  height: 4px;
  background: linear-gradient(90deg, var(--color-passion-red) 0%, var(--color-gold) 50%, transparent 100%);
  margin-bottom: 48px;
}

.page-about .about-story__header {
  flex-direction: column;
  align-items: flex-start;
}

.page-about .about-story__text {
  display: grid;
  gap: 20px;
  margin-bottom: 40px;
}

.page-about .about-story__text p {
  font-size: 16px;
  line-height: 1.85;
  color: var(--color-light-blue);
  margin: 0;
}

.page-about .about-story__principles {
  display: grid;
  gap: 16px;
}

.page-about .about-story__principle {
  padding: 24px;
  position: relative;
  border-left: 3px solid var(--color-passion-red);
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.page-about .about-story__principle:hover {
  transform: translateY(-4px);
  border-left-color: var(--color-cyan);
}

.page-about .about-story__principle-num {
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--color-gold);
  letter-spacing: 0.08em;
}

.page-about .about-story__principle h3 {
  margin-top: 10px;
  font-size: 18px;
  color: var(--color-white);
  font-weight: 700;
}

.page-about .about-story__principle p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-light-blue);
}

/* ===== 02 发展历程 ===== */
.page-about .about-milestones {
  background: radial-gradient(ellipse at 80% 20%, rgba(230, 57, 70, 0.08), transparent 60%);
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--about-timeline-x);
  width: 2px;
  background: linear-gradient(180deg, var(--color-passion-red), var(--color-gold), transparent);
  transform: translateX(-50%);
}

.page-about .about-timeline__item {
  position: relative;
  padding-left: calc(var(--about-timeline-x) + 36px);
  margin-bottom: 28px;
}

.page-about .about-timeline__marker {
  position: absolute;
  left: var(--about-timeline-x);
  top: 20px;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  background: var(--color-passion-red);
  border: 4px solid rgba(230, 57, 70, 0.25);
  border-radius: 50%;
  z-index: 1;
}

.page-about .about-timeline__dot {
  position: absolute;
  inset: 4px;
  background: var(--color-gold);
  border-radius: 50%;
}

.page-about .about-timeline__card {
  padding: 22px 20px;
  transition: transform 0.3s ease, border-color 0.3s ease;
  border: 1px solid transparent;
}

.page-about .about-timeline__card:hover {
  transform: translateX(4px);
  border-color: rgba(0, 229, 255, 0.3);
}

.page-about .about-timeline__version {
  font-family: var(--font-number);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-gold);
  letter-spacing: 0.08em;
  display: inline-block;
}

.page-about .about-timeline__card h3 {
  margin-top: 10px;
  font-size: 19px;
  font-weight: 700;
  color: var(--color-white);
}

.page-about .about-timeline__card p {
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-light-blue);
}

/* ===== 03 数据覆盖 ===== */
.page-about .about-coverage {
  background: linear-gradient(160deg, rgba(11, 27, 61, 0.9), rgba(7, 18, 40, 0.98));
}

.page-about .about-coverage__stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 40px;
}

.page-about .about-coverage__stat {
  padding: 24px 20px;
  background: var(--color-glass);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.page-about .about-coverage__stat .data-stat__value {
  font-family: var(--font-number);
  font-size: 40px;
  font-weight: 800;
  line-height: 1.1;
  display: block;
  letter-spacing: -0.02em;
}

.page-about .about-coverage__stat .data-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-light-blue);
}

.page-about .about-coverage__chart {
  position: relative;
  margin: 0 0 36px;
}

.page-about .about-coverage__chart::before {
  content: "";
  position: absolute;
  inset: 0 0 0 -20px;
  background: linear-gradient(90deg, rgba(230, 57, 70, 0.15), transparent 40%);
  z-index: 0;
  pointer-events: none;
}

.page-about .about-coverage__chart-img {
  display: block;
  width: 100%;
  aspect-ratio: 2 / 1;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4);
}

.page-about .about-coverage__chart-caption {
  margin-top: 12px;
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--color-light-blue);
  letter-spacing: 0.04em;
}

.page-about .about-coverage__desc {
  padding: 24px 20px;
  border-left: 3px solid var(--color-gold);
  background: rgba(244, 162, 97, 0.06);
  border-radius: 0 var(--radius) var(--radius) 0;
}

.page-about .about-coverage__desc p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-light-blue);
}

/* ===== 04 服务能力 ===== */
.page-about .about-service {
  background: linear-gradient(180deg, var(--color-deep-blue), rgba(11, 27, 61, 0.94));
}

.page-about .about-service__grid {
  gap: 16px;
}

.page-about .about-service__card {
  padding: 26px 22px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .about-service__card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
}

.page-about .about-service__card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 2px;
  height: 100%;
  background: linear-gradient(180deg, var(--color-cyan), transparent);
  opacity: 0.6;
}

.page-about .about-service__card-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(230, 57, 70, 0.12);
  color: var(--color-passion-red);
  font-family: var(--font-number);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 16px;
}

.page-about .about-service__card h3 {
  font-size: 18px;
  color: var(--color-white);
  margin: 0;
}

.page-about .about-service__card p {
  margin-top: 10px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--color-light-blue);
}

.page-about .about-service__status {
  margin-top: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-service__status .status-panel__dot {
  width: 8px;
  height: 8px;
  background: var(--color-cyan);
  border-radius: 50%;
  box-shadow: 0 0 10px rgba(0, 229, 255, 0.6);
}

.page-about .about-service__status span:last-child {
  font-family: var(--font-number);
  font-size: 13px;
  color: var(--color-cyan);
  letter-spacing: 0.03em;
}

/* ===== 05 团队与组织 ===== */
.page-about .about-team {
  background: radial-gradient(ellipse at 0% 100%, rgba(0, 229, 255, 0.06), transparent 55%);
}

.page-about .about-team__wrap {
  gap: 28px;
}

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

.page-about .about-team__img {
  display: block;
  width: 100%;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
}

.page-about .about-team__visual figcaption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--color-light-blue);
}

.page-about .about-team__info p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-light-blue);
  margin: 0 0 20px;
}

.page-about .about-team__bars {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}

.page-about .about-team__bar-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  align-items: center;
  gap: 12px;
}

.page-about .about-team__role {
  font-size: 14px;
  color: var(--color-white);
  font-weight: 600;
}

.page-about .about-team__track {
  display: block;
  height: 10px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.page-about .about-team__fill {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  height: 100%;
  font-family: var(--font-number);
  font-size: 11px;
  font-weight: 700;
  color: var(--color-white);
  padding-right: 8px;
  border-radius: 99px;
  letter-spacing: 0.02em;
  min-width: 70px;
}

.page-about .about-team__fill--tech {
  width: 46%;
  background: linear-gradient(90deg, var(--color-passion-red), var(--color-gold));
}

.page-about .about-team__fill--content {
  width: 38.5%;
  background: linear-gradient(90deg, var(--color-cyan), var(--color-light-blue));
}

.page-about .about-team__fill--ops {
  width: 15.5%;
  background: linear-gradient(90deg, var(--color-gold), var(--color-cyan));
}

.page-about .about-team__note {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-light-blue);
  padding: 16px 18px;
  background: var(--color-glass);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

/* ===== 06 行业认可 ===== */
.page-about .about-recognition {
  background: linear-gradient(180deg, var(--color-deep-blue), var(--color-dark-base));
}

.page-about .about-recognition__stats {
  display: grid;
  gap: 16px;
  margin-bottom: 36px;
}

.page-about .about-recognition__stat {
  text-align: center;
  padding: 28px 16px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, 0.07);
}

.page-about .about-recognition__stat .data-stat__value {
  font-family: var(--font-number);
  font-size: 44px;
  font-weight: 800;
  background: linear-gradient(120deg, var(--color-passion-red), var(--color-gold));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  letter-spacing: -0.03em;
}

.page-about .about-recognition__stat .data-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  color: var(--color-light-blue);
}

.page-about .about-recognition__trust {
  display: grid;
  gap: 16px;
}

.page-about .about-recognition__trust-item {
  padding: 24px 20px;
  background: var(--color-glass);
  border-radius: var(--radius);
  transition: transform 0.3s ease;
}

.page-about .about-recognition__trust-item:hover {
  transform: translateY(-3px);
}

.page-about .about-recognition__trust-item h3 {
  font-size: 17px;
  color: var(--color-white);
  margin: 0 0 8px;
  position: relative;
  padding-left: 18px;
}

.page-about .about-recognition__trust-item h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
}

.page-about .about-recognition__trust-item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-light-blue);
}

/* ===== 底部 CTA ===== */
.page-about .about-cta {
  padding: 64px 0 96px;
  background: linear-gradient(180deg, var(--color-dark-base), var(--color-deep-blue));
}

.page-about .about-cta__inner {
  text-align: center;
  padding: 48px 24px;
  border-radius: var(--radius);
  background: linear-gradient(140deg, rgba(230, 57, 70, 0.08), rgba(0, 229, 255, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  overflow: hidden;
}

.page-about .about-cta__inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-passion-red), var(--color-gold), var(--color-cyan));
}

.page-about .about-cta__inner h2 {
  font-family: var(--font-headline);
  font-size: 24px;
  color: var(--color-white);
  margin: 12px 0 10px;
}

.page-about .about-cta__inner p {
  font-size: 15px;
  line-height: 1.7;
  color: var(--color-light-blue);
  max-width: 46ch;
  margin: 0 auto;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  margin-top: 28px;
}

/* ===== 桌面端适配 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
    gap: 48px;
    padding-top: 56px;
  }

  .page-about .about-hero__frame {
    margin-inline: 0;
    max-width: 100%;
  }

  .page-about .about-hero__image {
    max-width: 100%;
  }

  .page-about .about-hero__meta {
    justify-content: flex-start;
  }

  .page-about .about-hero__title {
    font-size: 48px;
  }

  .page-about .chapter-section {
    padding: 96px 0;
  }

  .page-about .chapter-section__header {
    gap: 28px;
  }

  .page-about .chapter-section__index {
    font-size: 56px;
    min-width: 96px;
  }

  .page-about .chapter-section__title {
    font-size: 32px;
  }

  .page-about .about-story__header {
    flex-direction: row;
  }

  .page-about .about-story__text {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

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

  .page-about .about-timeline::before {
    left: 50%;
  }

  .page-about .about-timeline__item {
    width: 50%;
    padding-left: 0;
    margin-bottom: 40px;
  }

  .page-about .about-timeline__item:nth-child(odd) {
    padding-right: calc(48px + 16px);
    text-align: right;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding-left: calc(48px + 16px);
  }

  .page-about .about-timeline__item:nth-child(odd) .about-timeline__card {
    text-align: left;
  }

  .page-about .about-timeline__marker {
    left: 50%;
    width: 22px;
    height: 22px;
  }

  .page-about .about-timeline__card {
    padding: 28px 24px;
  }

  .page-about .about-timeline__card h3 {
    font-size: 20px;
  }

  .page-about .about-coverage__stats {
    flex-direction: row;
    gap: 0;
    justify-content: space-between;
  }

  .page-about .about-coverage__stat {
    flex: 1;
    margin-right: 20px;
  }

  .page-about .about-coverage__stat:last-child {
    margin-right: 0;
  }

  .page-about .about-coverage__stat .data-stat__value {
    font-size: 48px;
  }

  .page-about .about-coverage__desc p {
    font-size: 16px;
  }

  .page-about .about-recognition__stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-recognition__trust {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .about-cta__inner h2 {
    font-size: 30px;
  }
}

@media (min-width: 1024px) {
  .page-about .about-team__wrap {
    grid-template-columns: 0.9fr 1.1fr;
    align-items: center;
  }

  .page-about .about-service__grid {
    gap: 20px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }
}