.page-about {
  --about-orange: #FF7A00;
  --about-deep: #E56600;
  --about-yellow: #FFD100;
  --about-blue: #1B3A6B;
  --about-bg: #FAF7F0;
  --about-text: #2E2E2E;
  --about-border: #E0E0E0;
  --about-dark: #3D2C4E;
  --about-white: #FFFFFF;
  --about-radius-lg: 24px;
  --about-radius-md: 16px;
  --about-radius-sm: 10px;
  --about-shadow-card: 0 10px 40px rgba(30, 20, 10, 0.08);
  background:
    radial-gradient(circle at 8% 18%, rgba(255, 209, 0, 0.16) 0%, transparent 28%),
    radial-gradient(circle at 92% 42%, rgba(255, 122, 0, 0.10) 0%, transparent 24%),
    var(--about-bg);
  color: var(--about-text);
}

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

.page-about .container-wide {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.page-about .breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  letter-spacing: 0.04em;
  margin-bottom: 26px;
  color: rgba(46, 46, 46, 0.65);
}

.page-about .breadcrumb__sep {
  color: var(--about-orange);
  font-weight: 700;
}

.page-about .breadcrumb__current {
  color: var(--about-text);
  font-weight: 600;
}

.page-about .eyebrow {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--about-orange);
  margin: 0 0 12px;
}

.page-about .t-section {
  font-family: var(--font-title);
  font-size: 32px;
  line-height: 1.2;
  margin: 0 0 16px;
  color: var(--about-text);
}

.page-about .lead {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(46, 46, 46, 0.82);
}

.page-about .t-num {
  font-family: var(--font-num);
  font-feature-settings: "tnum";
}

.page-about .card {
  background: var(--about-white);
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius-md);
  box-shadow: var(--about-shadow-card);
}

.page-about .badge {
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 999px;
  display: inline-flex;
}

.page-about .badge--blue {
  background: rgba(27, 58, 107, 0.10);
  color: var(--about-blue);
}

.page-about .badge--orange {
  background: rgba(255, 122, 0, 0.12);
  color: var(--about-deep);
}

.page-about .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.page-about .btn--primary {
  background: var(--about-orange);
  color: var(--about-white);
  box-shadow: 0 8px 24px rgba(255, 122, 0, 0.35);
}

.page-about .btn--primary:hover {
  background: var(--about-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(255, 122, 0, 0.45);
}

.page-about .btn--ghost {
  background: transparent;
  border: 2px solid var(--about-blue);
  color: var(--about-blue);
}

.page-about .btn--ghost:hover {
  background: rgba(27, 58, 107, 0.06);
  transform: translateY(-2px);
}

/* ===== 首屏框景 ===== */
.page-about .about-hero {
  padding: 60px 0 70px;
  position: relative;
}

.page-about .about-hero__frame {
  position: relative;
  background: linear-gradient(135deg, rgba(255, 209, 0, 0.20) 0%, rgba(255, 122, 0, 0.10) 55%, rgba(27, 58, 107, 0.06) 100%);
  border: 2px solid var(--about-blue);
  border-radius: var(--about-radius-lg);
  padding: 48px 28px 38px;
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  top: 12px;
  left: 12px;
  right: 12px;
  bottom: 12px;
  border: 1px solid rgba(27, 58, 107, 0.28);
  border-radius: 18px;
  pointer-events: none;
}

.page-about .about-hero__corner {
  position: absolute;
  width: 26px;
  height: 26px;
  border-color: var(--about-orange);
  border-style: solid;
  z-index: 1;
}

.page-about .about-hero__corner--tl {
  top: -2px;
  left: -2px;
  border-width: 4px 0 0 4px;
  border-radius: 20px 0 0 0;
}

.page-about .about-hero__corner--tr {
  top: -2px;
  right: -2px;
  border-width: 4px 4px 0 0;
  border-radius: 0 20px 0 0;
}

.page-about .about-hero__corner--bl {
  bottom: -2px;
  left: -2px;
  border-width: 0 0 4px 4px;
  border-radius: 0 0 0 20px;
}

.page-about .about-hero__corner--br {
  bottom: -2px;
  right: -2px;
  border-width: 0 4px 4px 0;
  border-radius: 0 0 20px 0;
}

.page-about .about-hero__content {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__title {
  font-family: var(--font-title);
  font-size: 42px;
  line-height: 1.18;
  letter-spacing: 0.02em;
  margin: 0 0 16px;
  color: var(--about-text);
}

.page-about .about-hero__lead {
  font-size: 18px;
  line-height: 1.65;
  margin: 0 0 36px;
  max-width: 560px;
  color: rgba(46, 46, 46, 0.85);
}

.page-about .about-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 20px 40px;
  margin: 0;
  padding: 24px 0 0;
  border-top: 1px solid rgba(27, 58, 107, 0.15);
}

.page-about .about-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-about .about-hero__stats .stat__num {
  font-size: 28px;
  font-weight: 700;
  color: var(--about-blue);
  margin: 0;
}

.page-about .about-hero__stats .stat__label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: rgba(46, 46, 46, 0.65);
}

/* ===== 故事章节 ===== */
.page-about .story-section {
  padding: 70px 0 0;
}

.page-about .story-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-about .story-section__aside {
  position: relative;
}

.page-about .story-section__aside-num {
  position: absolute;
  right: 0;
  bottom: 0;
  font-size: 64px;
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 122, 0, 0.14);
  user-select: none;
}

.page-about .story-section__body {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-about .story-section__card {
  padding: 30px 24px;
}

.page-about .story-section__text {
  font-size: 16px;
  line-height: 1.85;
  margin: 0 0 18px;
}

.page-about .story-section__text:last-of-type {
  margin-bottom: 24px;
}

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

.page-about .story-figure__img {
  width: 100%;
  border-radius: var(--about-radius-sm);
  object-fit: cover;
  display: block;
}

.page-about .story-figure__caption {
  font-size: 13px;
  color: rgba(46, 46, 46, 0.55);
  margin-top: 10px;
  padding-left: 12px;
  border-left: 3px solid var(--about-orange);
}

.page-about .story-section__quote {
  position: relative;
  background: linear-gradient(135deg, var(--about-yellow) 0%, #FFC300 100%);
  border-radius: var(--about-radius-md);
  padding: 28px 24px 24px 30px;
  color: var(--about-blue);
}

.page-about .story-section__quote-mark {
  font-family: var(--font-title);
  font-size: 56px;
  line-height: 0.6;
  display: block;
  margin-bottom: 10px;
}

.page-about .story-section__quote p {
  font-family: var(--font-title);
  font-size: 22px;
  line-height: 1.4;
  margin: 0 0 8px;
}

.page-about .story-section__quote-source {
  font-size: 14px;
  opacity: 0.75;
}

/* ===== 使命卡 ===== */
.page-about .mission-section {
  padding: 70px 0 0;
}

.page-about .mission-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.page-about .mission-card {
  border-radius: var(--about-radius-lg);
  padding: 32px 26px;
  position: relative;
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .mission-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 44px rgba(30, 20, 10, 0.14);
}

.page-about .mission-card--primary {
  background: linear-gradient(135deg, var(--about-orange) 0%, #FF9330 100%);
  color: var(--about-white);
}

.page-about .mission-card--accent {
  background: linear-gradient(135deg, var(--about-blue) 0%, #27548C 100%);
  color: var(--about-white);
}

.page-about .mission-card--yellow {
  background: linear-gradient(135deg, var(--about-yellow) 0%, #FFE14D 100%);
  color: var(--about-blue);
}

.page-about .mission-card__num {
  position: absolute;
  right: 18px;
  top: 14px;
  font-size: 44px;
  font-weight: 700;
  opacity: 0.16;
}

.page-about .mission-card__title {
  font-family: var(--font-title);
  font-size: 24px;
  margin: 0 0 12px;
}

.page-about .mission-card__desc {
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
  max-width: 420px;
}

/* ===== 里程碑时间线 ===== */
.page-about .milestone-section {
  padding: 80px 0 0;
}

.page-about .section-heading {
  margin-bottom: 40px;
}

.page-about .section-heading--center {
  text-align: center;
}

.page-about .section-heading__desc {
  font-size: 16px;
  line-height: 1.7;
  color: rgba(46, 46, 46, 0.7);
  max-width: 520px;
}

.page-about .section-heading--center .section-heading__desc {
  margin: 0 auto;
}

.page-about .milestone-timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-left: 0;
}

.page-about .milestone-timeline::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--about-orange) 0%, var(--about-yellow) 50%, var(--about-blue) 100%);
  border-radius: 3px;
  opacity: 0.85;
}

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

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

.page-about .milestone-card__node {
  position: absolute;
  left: 10px;
  top: 6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--about-blue);
  border: 4px solid var(--about-bg);
  box-shadow: 0 0 0 3px rgba(27, 58, 107, 0.3);
  z-index: 1;
}

.page-about .milestone-card__panel {
  background: var(--about-white);
  border: 1px solid var(--about-border);
  border-left: 4px solid var(--about-orange);
  border-radius: var(--about-radius-md);
  padding: 26px 22px;
  box-shadow: var(--about-shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .milestone-card:hover .milestone-card__panel {
  transform: translateX(4px);
  box-shadow: 0 14px 40px rgba(255, 122, 0, 0.12);
}

.page-about .milestone-card__version {
  display: inline-block;
  font-size: 18px;
  font-weight: 700;
  color: var(--about-blue);
  background: rgba(27, 58, 107, 0.08);
  border-radius: 999px;
  padding: 5px 16px;
  margin-bottom: 14px;
}

.page-about .milestone-card__title {
  font-family: var(--font-title);
  font-size: 21px;
  margin: 0 0 10px;
}

.page-about .milestone-card__desc {
  font-size: 15px;
  line-height: 1.8;
  margin: 0;
  color: rgba(46, 46, 46, 0.75);
}

/* ===== 资质认证 ===== */
.page-about .certification-section {
  padding: 80px 0 0;
}

.page-about .certification-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  margin-bottom: 36px;
}

.page-about .certification-card {
  position: relative;
  padding: 30px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .certification-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 50px rgba(30, 20, 10, 0.12);
}

.page-about .certification-card__icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(255, 209, 0, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
}

.page-about .certification-card__title {
  font-family: var(--font-title);
  font-size: 20px;
  margin: 0;
}

.page-about .certification-card__desc {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(46, 46, 46, 0.72);
  margin: 0 0 6px;
  flex-grow: 1;
}

.page-about .certification-card__tag {
  align-self: flex-start;
}

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

.page-about .certification-figure::before {
  content: "";
  position: absolute;
  top: -14px;
  right: -10px;
  bottom: 36px;
  left: 26px;
  border: 2px solid var(--about-yellow);
  border-radius: var(--about-radius-md);
  z-index: 0;
}

.page-about .certification-figure__img {
  position: relative;
  z-index: 1;
  width: 100%;
  border-radius: var(--about-radius-md);
  object-fit: cover;
  display: block;
  box-shadow: var(--about-shadow-card);
}

.page-about .certification-figure__caption {
  position: relative;
  z-index: 1;
  font-size: 13px;
  color: rgba(46, 46, 46, 0.55);
  margin-top: 12px;
  padding-left: 16px;
  border-left: 3px solid var(--about-blue);
}

/* ===== 团队与生态 ===== */
.page-about .team-section {
  padding: 80px 0 0;
}

.page-about .team-section__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
}

.page-about .team-section__lead {
  margin: 0 0 26px;
}

.page-about .team-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.page-about .team-stat {
  display: flex;
  flex-direction: column;
  padding: 22px 20px;
  gap: 4px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-about .team-stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 38px rgba(30, 20, 10, 0.10);
}

.page-about .team-stat__num {
  font-size: 34px;
  font-weight: 700;
  color: var(--about-orange);
  line-height: 1.2;
}

.page-about .team-stat__label {
  font-size: 15px;
  font-weight: 700;
  color: var(--about-blue);
}

.page-about .team-stat__desc {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(46, 46, 46, 0.6);
}

.page-about .team-ecosystem {
  padding: 0;
}

.page-about .team-ecosystem__title {
  font-family: var(--font-title);
  font-size: 20px;
  margin: 0 0 16px;
}

.page-about .team-ecosystem__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-about .team-ecosystem__item {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(46, 46, 46, 0.78);
}

.page-about .team-ecosystem__dot {
  position: absolute;
  left: 0;
  top: 8px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--about-yellow);
  box-shadow: 0 0 0 3px rgba(255, 209, 0, 0.25);
}

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

.page-about .team-figure__img {
  width: 100%;
  border-radius: var(--about-radius-md);
  object-fit: cover;
  display: block;
  box-shadow: var(--about-shadow-card);
}

.page-about .team-figure__caption {
  font-size: 13px;
  color: rgba(46, 46, 46, 0.55);
  margin-top: 10px;
  padding-left: 12px;
  border-left: 3px solid var(--about-yellow);
}

/* ===== 荣誉区 ===== */
.page-about .honor-section {
  padding: 80px 0 0;
}

.page-about .honor-section__inner {
  background: linear-gradient(135deg, var(--about-dark) 0%, #4E3A63 100%);
  border-radius: var(--about-radius-lg);
  padding: 48px 28px 44px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-about .honor-section__inner::before {
  content: "";
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 209, 0, 0.25) 0%, transparent 70%);
  top: -120px;
  right: -80px;
}

.page-about .honor-section__inner::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 122, 0, 0.20) 0%, transparent 70%);
  bottom: -70px;
  left: -40px;
}

.page-about .honor-section__label {
  color: var(--about-yellow);
}

.page-about .honor-section__quote {
  font-family: var(--font-title);
  font-size: 28px;
  line-height: 1.4;
  color: var(--about-white);
  margin: 16px 0 12px;
  position: relative;
  z-index: 1;
}

.page-about .honor-section__text {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
  max-width: 520px;
  margin: 0 auto 28px;
  position: relative;
  z-index: 1;
}

.page-about .honor-section__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: center;
  position: relative;
  z-index: 1;
}

.page-about .honor-section__actions .btn--ghost {
  border-color: rgba(255, 255, 255, 0.7);
  color: var(--about-white);
}

.page-about .honor-section__actions .btn--ghost:hover {
  background: rgba(255, 255, 255, 0.10);
}

/* ===== 页脚内链导航 ===== */
.page-about .about-subnav {
  padding: 40px 0 80px;
}

.page-about .about-subnav__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 20px;
  padding: 22px 24px;
  border: 1px solid var(--about-border);
  border-radius: var(--about-radius-md);
  background: var(--about-white);
  box-shadow: 0 6px 24px rgba(30, 20, 10, 0.04);
}

.page-about .about-subnav__label {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--about-blue);
  margin-right: 8px;
}

.page-about .about-subnav__link {
  font-size: 15px;
  color: var(--about-text);
  text-decoration: none;
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-subnav__link:hover {
  color: var(--about-orange);
  border-color: var(--about-orange);
}

/* ===== 滚动显现动效 ===== */
.page-about [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.page-about [data-reveal][data-visible] {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .page-about .mission-card:hover,
  .page-about .certification-card:hover,
  .page-about .team-stat:hover,
  .page-about .milestone-card:hover .milestone-card__panel {
    transform: none;
    box-shadow: var(--about-shadow-card);
  }
}

/* ===== 桌面端布局 ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: 72px 0 90px;
  }

  .page-about .about-hero__frame {
    padding: 60px 56px 48px;
  }

  .page-about .about-hero__title {
    font-size: 54px;
  }

  .page-about .about-hero__lead {
    font-size: 20px;
    max-width: 620px;
  }

  .page-about .about-hero__stats {
    gap: 20px 60px;
  }

  .page-about .about-hero__stats .stat__num {
    font-size: 34px;
  }

  .page-about .story-section__grid {
    grid-template-columns: 200px 1fr;
    gap: 48px;
  }

  .page-about .story-section__card {
    padding: 40px 44px;
  }

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

  .page-about .story-section__quote {
    padding: 32px 36px 28px 38px;
  }

  .page-about .story-section__quote p {
    font-size: 26px;
  }

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

  .page-about .mission-card {
    padding: 36px 28px;
  }

  .page-about .mission-card__num {
    font-size: 56px;
  }

  .page-about .milestone-timeline {
    max-width: 860px;
    margin: 0 auto;
  }

  .page-about .milestone-card {
    padding-left: 80px;
  }

  .page-about .milestone-timeline::before {
    left: 24px;
  }

  .page-about .milestone-card__node {
    left: 16px;
  }

  .page-about .milestone-card__panel {
    padding: 30px 36px;
  }

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

  .page-about .certification-card {
    padding: 34px 28px 26px;
  }

  .page-about .certification-figure {
    display: grid;
    grid-template-columns: 160px 1fr;
    align-items: start;
    gap: 20px;
  }

  .page-about .certification-figure__img {
    width: 100%;
    max-height: 420px;
  }

  .page-about .team-section__grid {
    grid-template-columns: 1fr 1fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .team-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .team-stat {
    padding: 24px 18px;
  }

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

  .page-about .honor-section__inner {
    padding: 64px 48px 56px;
  }

  .page-about .honor-section__quote {
    font-size: 34px;
  }

  .page-about .about-subnav {
    padding: 50px 0 90px;
  }

  .page-about .about-subnav__inner {
    justify-content: center;
  }
}

@media (min-width: 1024px) {
  .page-about .t-section {
    font-size: 36px;
  }

  .page-about .story-section__grid {
    grid-template-columns: 260px 1fr;
    gap: 64px;
  }

  .page-about .certification-figure {
    grid-template-columns: 220px 1fr;
  }
}