.page-about {
  --about-num-size: clamp(2.5rem, 6vw, 4rem);
  --about-index-width: 220px;
  scroll-behavior: smooth;
  background: var(--paper);
  color: var(--ink);
}

.page-about .breadcrumbs {
  padding-top: 1.25rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.page-about .breadcrumbs a {
  color: var(--ink-soft);
  text-underline-offset: 4px;
}

.page-about .breadcrumbs a:hover {
  color: var(--orange);
}

/* ==================== 首屏横幅 ==================== */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, var(--space-blue) 0%, var(--space-blue-deep) 100%);
  color: var(--paper-bright);
  margin: 1rem 0 0;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 clamp(2rem, 5vw, 3.5rem);
  border-top: 4px solid var(--orange);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -20%;
  width: 55%;
  height: 90%;
  background:
    linear-gradient(135deg, transparent 45%, rgba(184, 255, 0, 0.12) 45%, rgba(184, 255, 0, 0.12) 52%, transparent 52%),
    linear-gradient(45deg, transparent 40%, rgba(255, 90, 0, 0.14) 40%, rgba(255, 90, 0, 0.14) 47%, transparent 47%);
  transform: rotate(-8deg);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--acid) 100%);
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 2rem;
  align-items: center;
}

.page-about .about-hero__kicker {
  color: var(--acid);
  margin-bottom: 1rem;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(2.4rem, 6.5vw, 4.6rem);
  line-height: 1.04;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  font-size: 1.05rem;
  line-height: 1.75;
  max-width: 46em;
  color: rgba(255, 253, 249, 0.88);
  margin-bottom: 1.75rem;
}

.page-about .about-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
}

.page-about .about-hero__chip {
  display: inline-flex;
  align-items: baseline;
  gap: 0.4rem;
  font-size: 0.85rem;
  padding: 0.55rem 0.85rem;
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--cut);
  background: rgba(255, 255, 255, 0.08);
  color: var(--paper-bright);
}

.page-about .about-hero__chip .data-num {
  font-size: 1rem;
  font-weight: 500;
  color: var(--acid);
}

.page-about .about-hero__media {
  max-width: 720px;
}

.page-about .about-hero__imgbox {
  border-radius: var(--cut);
  border: 4px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  transform: rotate(1.5deg);
  transition: transform 0.4s ease;
}

.page-about .about-hero__imgbox:hover {
  transform: rotate(0deg) scale(1.01);
}

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

/* ==================== 整体左右布局 ==================== */
.page-about .about-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  padding: 2.5rem 0 4rem;
}

/* ==================== 侧边索引 ==================== */
.page-about .about-index {
  border-top: 4px solid var(--space-blue);
  background: var(--warm-gray);
  padding: 1rem 1.25rem 1.25rem;
  border-radius: 0 0 var(--cut) var(--cut);
  align-self: start;
}

.page-about .about-index__title {
  font-family: var(--font-data);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.8rem;
}

.page-about .about-index__list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.2rem;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.4rem 0;
  font-size: 0.92rem;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  width: calc(50% - 0.6rem);
}

.page-about .about-index__link span {
  font-family: var(--font-data);
  font-size: 0.78rem;
  color: var(--orange);
}

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

.page-about .about-index__note {
  margin-top: 1rem;
  padding-top: 0.8rem;
  border-top: 1px dashed rgba(26, 26, 26, 0.2);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ==================== 章节通用 ==================== */
.page-about .about-section {
  scroll-margin-top: 5rem;
  padding: 2.5rem 0;
  border-top: 1px solid var(--line);
}

.page-about .about-section--tint {
  background: var(--paper-bright);
  margin-left: calc(-1 * var(--container-pad));
  margin-right: calc(-1 * var(--container-pad));
  padding-left: var(--container-pad);
  padding-right: var(--container-pad);
  border-radius: var(--cut);
}

.page-about .about-section__head {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-about .about-section__num {
  font-family: var(--font-data);
  font-size: var(--about-num-size);
  font-weight: 500;
  line-height: 0.9;
  color: var(--orange);
  min-width: 1.6em;
  position: relative;
  top: 0.1em;
}

.page-about .about-section__head .kicker {
  margin-bottom: 0.25rem;
}

.page-about .about-section__head .section-title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  line-height: 1.2;
  margin: 0;
}

/* ==================== 品牌故事 ==================== */
.page-about .about-story {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.page-about .about-story__main {
  padding: 1.5rem;
  font-size: 0.98rem;
  line-height: 1.85;
}

.page-about .about-story__main p {
  margin: 0 0 1.1rem;
}

.page-about .about-story__main p b {
  color: var(--orange);
  font-weight: 500;
}

.page-about .about-story__side {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.page-about .about-quote {
  margin: 0;
  padding: 1.25rem 1.25rem 1.25rem 1.75rem;
  border-left: 4px solid var(--orange);
  background: var(--warm-gray);
  border-radius: 0 var(--cut) var(--cut) 0;
}

.page-about .about-quote p {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: 1.35rem;
  line-height: 1.5;
  margin: 0 0 0.5rem;
  color: var(--ink);
}

.page-about .about-quote cite {
  font-style: normal;
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.page-about .about-story__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.6rem;
}

.page-about .about-story__points li {
  position: relative;
  padding-left: 1.4rem;
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-about .about-story__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.8rem;
  height: 2px;
  background: var(--acid);
}

/* ==================== 发展历程 / 时间线 ==================== */
.page-about .about-journey {
  position: relative;
  padding-left: 2rem;
  margin-bottom: 2rem;
}

.page-about .about-journey::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 3px;
  background: linear-gradient(180deg, var(--orange), rgba(255, 90, 0, 0.25));
  border-radius: 2px;
}

.page-about .about-journey__item {
  position: relative;
  margin-bottom: 1.4rem;
}

.page-about .about-journey__dot {
  position: absolute;
  left: -2.15rem;
  top: 1.4rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--paper-bright);
  border: 3px solid var(--orange);
  box-shadow: 0 0 0 2px rgba(255, 90, 0, 0.25);
}

.page-about .about-journey__dot::after {
  content: "";
  position: absolute;
  left: -6px;
  top: -6px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1px solid rgba(255, 90, 0, 0.4);
}

.page-about .about-journey__card {
  position: relative;
  padding: 1.25rem;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  border-radius: var(--cut);
  overflow: hidden;
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.page-about .about-journey__card::before {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, transparent 50%, var(--orange) 50%);
}

.page-about .about-journey__card:hover {
  border-color: rgba(255, 90, 0, 0.5);
  transform: translateX(4px);
}

.page-about .about-journey__year {
  font-family: var(--font-data);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--orange);
  letter-spacing: 0.03em;
}

.page-about .about-journey__card h3 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.2rem;
  margin: 0.3rem 0 0.5rem;
}

.page-about .about-journey__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-about .about-journey__img {
  border-radius: var(--cut);
  margin-top: 1rem;
  overflow: hidden;
  border: 1px solid var(--line);
}

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

/* ==================== 数据能力 ==================== */
.page-about .about-capability__flips {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.page-about .about-flip {
  perspective: 900px;
  height: 170px;
  cursor: pointer;
  outline: none;
}

.page-about .about-flip__inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.45s ease;
  transform-style: preserve-3d;
}

.page-about .about-flip:hover .about-flip__inner,
.page-about .about-flip:focus-visible .about-flip__inner,
.page-about .about-flip:focus .about-flip__inner {
  transform: rotateY(180deg);
}

.page-about .about-flip__face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  border-radius: var(--cut);
}

.page-about .about-flip__front {
  background: var(--paper-bright);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.page-about .about-flip__front .data-num {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 500;
  color: var(--orange);
  line-height: 1.1;
}

.page-about .about-flip__front p {
  margin: 0.4rem 0 0;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.page-about .about-flip__back {
  background: var(--space-blue);
  color: var(--paper-bright);
  transform: rotateY(180deg);
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about .about-flip__back p {
  margin: 0;
  font-size: 0.86rem;
  line-height: 1.65;
}

.page-about .about-capability__detail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-capability__detail-card {
  padding: 1.5rem;
}

.page-about .about-capability__detail-card h3 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.25rem;
  margin: 0 0 1rem;
}

.page-about .about-capability__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.7rem;
  counter-reset: cap;
}

.page-about .about-capability__list li {
  counter-increment: cap;
  position: relative;
  padding-left: 2rem;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--ink);
}

.page-about .about-capability__list li::before {
  content: "0" counter(cap);
  position: absolute;
  left: 0;
  top: 0.1em;
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: var(--orange);
  border: 1px solid rgba(255, 90, 0, 0.35);
  border-radius: 4px;
  padding: 0.1rem 0.3rem;
}

.page-about .about-capability__list li strong {
  display: block;
  font-weight: 500;
  color: var(--ink);
}

.page-about .about-capability__detail-card--dark,
.page-about .panel--dark.about-capability__detail-card {
  background: var(--space-blue);
  color: var(--paper-bright);
  border-color: transparent;
}

.page-about .panel--dark.about-capability__detail-card h3 {
  color: var(--paper-bright);
}

.page-about .panel--dark.about-capability__detail-card p {
  color: rgba(255, 253, 249, 0.85);
  font-size: 0.92rem;
  line-height: 1.75;
}

.page-about .panel--dark.about-capability__detail-card .note {
  color: var(--acid);
  font-size: 0.85rem;
  margin-top: 1rem;
}

/* ==================== 团队介绍 ==================== */
.page-about .about-team__img {
  border-radius: var(--cut);
  overflow: hidden;
  margin-bottom: 1.5rem;
  border: 1px solid var(--line);
}

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

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-team__card {
  padding: 1.5rem;
  background: var(--window, var(--paper-bright));
  border: 1px solid var(--line);
  position: relative;
  border-top: 4px solid var(--space-blue);
}

.page-about .about-team__card:nth-child(2) {
  border-top-color: var(--orange);
}

.page-about .about-team__card:nth-child(3) {
  border-top-color: var(--acid);
}

.page-about .about-team__card .data-num {
  display: block;
  font-size: 2rem;
  font-weight: 500;
  color: var(--orange);
}

.page-about .about-team__card h3 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.2rem;
  margin: 0.4rem 0 0.6rem;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ==================== 资质与荣誉 ==================== */
.page-about .about-honor__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-honor__card {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  background: var(--paper-bright);
  border: 1px solid var(--line);
  border-radius: var(--cut);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-about .about-honor__card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lift);
}

.page-about .about-honor__card h3 {
  font-family: var(--font-display);
  font-weight: 300;
  font-size: 1.25rem;
  margin: 0.2rem 0 0;
}

.page-about .about-honor__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--ink-soft);
}

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

/* ==================== 底部 CTA ==================== */
.page-about .about-cta {
  margin-top: 1rem;
}

.page-about .about-cta__panel {
  padding: 2rem;
  text-align: left;
  border-radius: var(--cut);
  background:
    linear-gradient(135deg, transparent 70%, rgba(184, 255, 0, 0.1) 70%),
    var(--space-blue);
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 200;
  font-size: 1.8rem;
  margin: 0 0 0.5rem;
  color: var(--paper-bright);
}

.page-about .about-cta__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: rgba(255, 253, 249, 0.85);
  margin: 0 0 1.5rem;
  max-width: 40em;
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ==================== 媒体查询 ==================== */
@media (min-width: 600px) {
  .page-about .about-hero__inner {
    grid-template-columns: 1fr 0.9fr;
  }

  .page-about .about-story {
    grid-template-columns: 1.5fr 1fr;
  }

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

  .page-about .about-capability__detail {
    grid-template-columns: 1fr 1fr;
  }

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

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

  .page-about .about-journey {
    padding-left: 3rem;
  }

  .page-about .about-journey__dot {
    left: -3.13rem;
  }
}

@media (min-width: 900px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-index-width) minmax(0, 1fr);
    gap: 3rem;
    padding-top: 3rem;
  }

  .page-about .about-index {
    position: sticky;
    top: 2rem;
  }

  .page-about .about-index__list {
    flex-direction: column;
    gap: 0;
  }

  .page-about .about-index__link {
    width: auto;
    justify-content: space-between;
    padding: 0.6rem 0;
    border-bottom: 1px solid rgba(26, 26, 26, 0.12);
  }

  .page-about .about-index__link:first-child {
    border-top: 1px solid rgba(26, 26, 26, 0.12);
  }

  .page-about .about-index__link span {
    order: 2;
  }

  .page-about .about-section {
    padding: 3.5rem 0;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-about .about-flip__inner {
    transition: none;
  }

  .page-about .about-hero__imgbox {
    transform: none;
    transition: none;
  }

  .page-about .about-journey__card {
    transition: none;
  }
}

.page-about {
  --window: transparent;
}