.page-about {
  background: var(--c-bg);
  color: var(--c-white);
  overflow-x: hidden;
}

.page-about .section {
  padding-block: 3.5rem 3rem;
}

/* ===== 品牌档案首屏 ===== */
.page-about .about-hero {
  padding: 2.5rem 0 1.5rem;
  position: relative;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-hero__titles {
  border-left: 5px solid var(--c-lime);
  padding-left: 1.25rem;
}

.page-about .about-hero__kicker {
  font-family: var(--font-body);
  color: var(--c-cyan);
  font-size: 0.85rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 0.75rem;
}

.page-about .about-hero__title {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(2.6rem, 9vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  margin: 0 0 0.5rem;
  color: var(--c-white);
}

.page-about .about-hero__version {
  color: var(--c-lime);
  font-family: var(--font-body);
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

.page-about .about-hero__intro {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.page-about .about-hero__archive-note {
  color: var(--c-cyan);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
}

.page-about .about-hero__lead {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--c-gray);
  margin: 0;
}

.page-about .about-hero__stat-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.25rem;
}

.page-about .about-hero__stat {
  background: var(--c-carbon);
  border-top: 4px solid var(--c-cyan);
  padding: 0.85rem 1rem;
  min-width: 108px;
  flex: 1 1 auto;
}

.page-about .about-hero__stat-num {
  display: block;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.75rem;
  line-height: 1.1;
  color: var(--c-lime);
}

.page-about .about-hero__stat-label {
  display: block;
  color: var(--c-gray);
  font-size: 0.72rem;
  margin-top: 0.4rem;
  letter-spacing: 0.05em;
}

.page-about .about-hero__slogan {
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(176, 181, 192, 0.3);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  align-items: baseline;
}

.page-about .about-hero__slogan-en {
  font-family: var(--font-heading);
  font-style: italic;
  text-transform: uppercase;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--c-white);
}

.page-about .about-hero__slogan-zh {
  font-family: var(--font-body);
  color: var(--c-gray);
  font-size: 0.85rem;
  letter-spacing: 0.25em;
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  padding-top: 1rem;
}

.page-about .about-story__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-story__content h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem;
  color: var(--c-white);
}

.page-about .about-story__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--c-white);
  margin: 0 0 0.8rem;
}

.page-about .about-story__text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-gray);
  margin: 0;
}

.page-about .about-story__figure {
  margin: 0;
}

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

.page-about .about-story__figure figcaption {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--c-gray);
  border-bottom: 1px solid rgba(176, 181, 192, 0.3);
  padding: 0.6rem 0 1rem;
}

/* ===== 发展历程时间线 ===== */
.page-about .about-journey {
  background: var(--c-carbon);
  position: relative;
}

.page-about .about-journey__head {
  margin-bottom: 2.5rem;
}

.page-about .about-journey__kicker,
.page-about .about-philosophy__kicker,
.page-about .about-team__kicker,
.page-about .about-credentials__kicker {
  font-family: var(--font-body);
  color: var(--c-cyan);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin: 0 0 0.5rem;
}

.page-about .about-journey__head h2,
.page-about .about-philosophy__content h2,
.page-about .about-team__head h2,
.page-about .about-credentials__head h2 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(1.8rem, 4.5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--c-white);
}

.page-about .about-journey__intro {
  font-family: var(--font-body);
  color: var(--c-gray);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0.75rem 0 0;
}

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

.page-about .about-journey__rail {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 8px;
  width: 2px;
  pointer-events: none;
}

.page-about .about-journey__rail svg {
  width: 100%;
  height: 100%;
  display: block;
}

.page-about .about-milestones {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2rem;
}

.page-about .about-milestone {
  position: relative;
  padding-left: 2.5rem;
}

.page-about .about-milestone__node {
  position: absolute;
  left: 0;
  top: 0.45rem;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--c-bg);
  border: 4px solid var(--c-yellow);
}

.page-about .about-milestone__node--cyan {
  border-color: var(--c-cyan);
}

.page-about .about-milestone__node--lime {
  border-color: var(--c-lime);
  background: var(--c-lime);
  width: 20px;
  height: 20px;
  left: -2px;
  top: 0.4rem;
}

.page-about .about-milestone__card {
  background: var(--c-bg);
  border-left: 5px solid var(--c-yellow);
  padding: 1.25rem 1.25rem;
}

.page-about .about-milestone__card .about-milestone--cyan ~ & {
  border-left-color: var(--c-cyan);
}

.page-about .about-milestone__meta {
  font-family: var(--font-body);
  color: var(--c-cyan);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.page-about .about-milestone__card h3 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.4rem;
  margin: 0.4rem 0 0.5rem;
  color: var(--c-white);
}

.page-about .about-milestone__card p {
  font-family: var(--font-body);
  color: var(--c-gray);
  font-size: 0.88rem;
  line-height: 1.65;
  margin: 0;
}

.page-about .about-milestone:nth-child(2) .about-milestone__card {
  border-left-color: var(--c-cyan);
}

.page-about .about-milestone:nth-child(3) .about-milestone__card {
  border-left-color: var(--c-lime);
}

/* ===== 品牌理念 ===== */
.page-about .about-philosophy {
  position: relative;
  overflow: hidden;
  background: var(--c-bg);
  padding-block: 4rem;
}

.page-about .about-philosophy__bg {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.2rem;
  opacity: 0.09;
  pointer-events: none;
}

.page-about .about-philosophy__bg span {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: clamp(3rem, 12vw, 9rem);
  line-height: 0.9;
  letter-spacing: -0.04em;
  text-transform: uppercase;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-lime);
}

.page-about .about-philosophy__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-about .about-philosophy__content {
  max-width: 740px;
}

.page-about .about-philosophy__content h2 {
  margin-bottom: 1rem;
}

.page-about .about-philosophy__lead {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  color: var(--c-white);
  margin: 0;
}

.page-about .about-philosophy__text {
  font-family: var(--font-body);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--c-gray);
  margin: 0.9rem 0 1.75rem;
}

.page-about .about-philosophy__content::after {
  content: "";
  display: block;
  width: 100%;
  height: 6px;
  margin-top: 2rem;
  background: linear-gradient(90deg, var(--c-yellow) 0 50%, var(--c-red) 50% 100%);
}

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

/* ===== 专业团队 ===== */
.page-about .about-team {
  background: var(--c-carbon);
}

.page-about .about-team__head {
  margin-bottom: 2rem;
}

.page-about .about-team__intro {
  font-family: var(--font-body);
  color: var(--c-gray);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0.75rem 0 0;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.page-about .about-team__card {
  background: var(--c-bg);
  border-top: 5px solid var(--c-yellow);
  padding: 1.5rem;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}

.page-about .about-team__card--cyan {
  border-top-color: var(--c-cyan);
}

.page-about .about-team__card--lime {
  border-top-color: var(--c-lime);
}

.page-about .about-team__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  border-top-color: var(--c-lime);
}

.page-about .about-team__card h3 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.3rem;
  margin: 0 0 0.6rem;
  color: var(--c-white);
}

.page-about .about-team__count {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 2rem;
  color: var(--c-lime);
  margin: 0 0 0.7rem;
}

.page-about .about-team__count small {
  font-size: 0.9rem;
  color: var(--c-gray);
  font-family: var(--font-body);
}

.page-about .about-team__desc {
  font-family: var(--font-body);
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--c-gray);
  margin: 0 0 1rem;
}

.page-about .about-team__tags {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-about .about-team__tags li {
  font-family: var(--font-body);
  font-size: 0.72rem;
  color: var(--c-gray);
  border: 1px solid rgba(176, 181, 192, 0.5);
  border-radius: 999px;
  padding: 0.2rem 0.65rem;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-about .about-team__card:hover .about-team__tags li {
  color: var(--c-lime);
  border-color: var(--c-lime);
}

.page-about .about-team__figure {
  margin: 0;
}

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

.page-about .about-team__figure figcaption {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--c-gray);
  border-bottom: 1px solid rgba(176, 181, 192, 0.3);
  padding: 0.6rem 0 1rem;
}

/* ===== 资质合规 ===== */
.page-about .about-credentials {
  position: relative;
  overflow: hidden;
  background: var(--c-bg);
}

.page-about .about-credentials__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.14;
  pointer-events: none;
}

.page-about .about-credentials > .container {
  position: relative;
  z-index: 1;
}

.page-about .about-credentials__head {
  margin-bottom: 2rem;
}

.page-about .about-credentials__lead {
  font-family: var(--font-body);
  color: var(--c-gray);
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0.75rem 0 0;
}

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

.page-about .about-credential {
  background: rgba(13, 15, 20, 0.88);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.25rem;
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.page-about .about-credential__mark {
  flex: 0 0 46px;
  width: 46px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 0.9rem;
  color: var(--c-bg);
  background: var(--c-cyan);
  border-radius: 50%;
}

.page-about .about-credential__content h3 {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--c-white);
  margin: 0 0 0.35rem;
}

.page-about .about-credential__content p {
  font-family: var(--font-body);
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--c-gray);
  margin: 0;
}

.page-about .about-credentials__footer {
  margin-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: flex-start;
}

.page-about .about-credentials__footer p {
  font-family: var(--font-body);
  font-size: 0.83rem;
  line-height: 1.7;
  color: var(--c-gray);
  margin: 0;
}

/* ===== 桌面端增强 ===== */
@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: 4rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: end;
    gap: 4rem;
  }

  .page-about .about-hero__title {
    font-size: clamp(4rem, 9vw, 6.5rem);
  }

  .page-about .about-hero__slogan {
    margin-top: 2.5rem;
  }

  .page-about .about-story__grid {
    grid-template-columns: 0.85fr 1.15fr;
    align-items: center;
    gap: 3.5rem;
  }

  .page-about .about-story__content h2 {
    font-size: 3rem;
  }

  .page-about .about-story__figure img {
    max-height: 600px;
    object-fit: cover;
  }

  .page-about .about-journey__rail {
    left: 12px;
  }

  .page-about .about-milestones {
    gap: 2.5rem;
  }

  .page-about .about-milestone {
    padding-left: 3.5rem;
  }

  .page-about .about-milestone__node {
    width: 20px;
    height: 20px;
    top: 0.5rem;
  }

  .page-about .about-milestone__node--lime {
    width: 26px;
    height: 26px;
    left: -3px;
  }

  .page-about .about-philosophy__inner {
    align-items: start;
  }

  .page-about .about-philosophy__vertical {
    display: inline-block;
    writing-mode: vertical-rl;
    font-family: var(--font-heading);
    font-style: italic;
    text-transform: uppercase;
    color: var(--c-cyan);
    letter-spacing: 0.32em;
    font-size: 0.8rem;
    position: absolute;
    right: 0;
    top: 0;
    border-right: 2px solid var(--c-cyan);
    padding-right: 0.75rem;
    min-height: 130px;
  }

  .page-about .about-team__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }

  .page-about .about-credentials__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .page-about .about-credentials__footer {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}