.page-about {
  --about-pad: clamp(48px, 8vw, 104px);
  --about-line: rgba(185, 203, 216, 0.26);
  --about-line-soft: rgba(185, 203, 216, 0.14);
  background: var(--c-mist);
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: clamp(16px, 0.55vw + 14px, 19px);
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
}

.page-about p {
  margin: 0 0 1em;
}

.page-about .kicker {
  font-family: var(--font-serif);
  font-size: clamp(12px, 1vw, 13px);
  letter-spacing: 0.16em;
  color: var(--c-coral);
  margin: 0 0 14px;
}

.page-about .breadcrumb {
  padding: 18px 0 0;
  font-size: 13px;
  color: var(--c-line-strong);
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.page-about .breadcrumb a {
  color: var(--c-tide);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  border-bottom-color: var(--c-coral);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  background: var(--c-deep);
  color: var(--c-mist);
  padding: clamp(30px, 5vw, 62px) 0 var(--about-pad);
  margin-top: 14px;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 90% at 100% 0%, rgba(47, 227, 193, 0.2), transparent 62%),
    radial-gradient(100% 80% at 0% 100%, rgba(255, 107, 74, 0.18), transparent 66%);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  top: -34%;
  width: 62%;
  height: 130%;
  background: linear-gradient(160deg, rgba(11, 47, 79, 0.9), rgba(6, 27, 51, 0));
  transform: rotate(9deg);
  border-left: 1px solid var(--about-line-soft);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 5vw, 52px);
}

.page-about .about-hero__aside-title {
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--c-aqua);
  margin: 0 0 10px;
}

.page-about .about-hero__year {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 0;
  font-size: 14px;
  color: rgba(245, 250, 252, 0.78);
  text-decoration: none;
  border-bottom: 1px solid var(--about-line-soft);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-about .about-hero__year span {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  color: var(--c-aqua);
  letter-spacing: 0.02em;
}

.page-about .about-hero__year:hover,
.page-about .about-hero__year:focus-visible {
  color: var(--c-white);
  padding-left: 6px;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(31px, 6.6vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--c-white);
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  max-width: 15em;
}

.page-about .about-hero .lede {
  max-width: 34em;
  color: rgba(245, 250, 252, 0.85);
  font-size: clamp(16px, 0.6vw + 14px, 19px);
  line-height: 1.85;
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.page-about .about-hero__meta span {
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--c-shallow);
  border: 1px solid var(--about-line);
  border-radius: 999px;
  padding: 5px 13px;
}

/* ---------- 通用章节 ---------- */
.page-about .about-section {
  padding: var(--about-pad) 0;
}

.page-about .about-section__head {
  max-width: 46em;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .about-section h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--c-deep);
  margin: 0 0 14px;
}

.page-about .about-section__intro {
  color: var(--c-ink);
  max-width: 34em;
  margin: 0;
}

.page-about .about-figure {
  margin: 0 0 clamp(26px, 4vw, 46px);
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--about-line);
  box-shadow: var(--shadow-2);
  background: var(--c-tide);
}

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

.page-about .about-figure--tall img {
  aspect-ratio: 5 / 6;
}

.page-about .about-figure--wide img {
  aspect-ratio: 14 / 9;
}

.page-about .about-figure figcaption {
  font-family: var(--font-serif);
  font-size: 13px;
  line-height: 1.7;
  color: rgba(245, 250, 252, 0.82);
  background: var(--c-tide);
  padding: 12px 16px;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .aside-note {
  font-family: var(--font-serif);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--c-tide);
  border-left: 2px solid var(--c-aqua);
  padding: 4px 0 4px 14px;
  margin: 16px 0 0;
}

/* ---------- 品牌命题 ---------- */
.page-about .about-proposition {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
}

.page-about .about-proposition__lead p {
  max-width: 32em;
  color: var(--c-ink);
}

.page-about .about-lines {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-line {
  position: relative;
  background: var(--c-white);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
  padding: 22px 20px 20px;
  transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-line__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-coral);
  margin-bottom: 10px;
}

.page-about .about-line h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 1.6vw, 22px);
  color: var(--c-deep);
  margin: 0 0 10px;
}

.page-about .about-line p {
  margin: 0 0 12px;
  font-size: 0.95em;
}

.page-about .about-line__meta {
  font-family: var(--font-serif);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--c-line-strong);
  margin: 0 !important;
}

.page-about .about-line:hover,
.page-about .about-line:focus-within {
  transform: translateY(-3px);
  border-color: var(--c-aqua);
  box-shadow: var(--shadow-2);
}

/* ---------- 时间线 ---------- */
.page-about .about-section--timeline {
  background: linear-gradient(180deg, var(--c-mist), var(--c-shallow));
}

.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  max-width: 52em;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 clamp(26px, 4vw, 40px) 30px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 20px;
  bottom: -6px;
  width: 1px;
  background: linear-gradient(180deg, rgba(47, 227, 193, 0.75), rgba(255, 107, 74, 0.35));
}

.page-about .about-timeline__item:last-child::before {
  display: none;
}

.page-about .about-timeline__item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--c-aqua);
  box-shadow: 0 0 0 4px rgba(47, 227, 193, 0.18);
}

.page-about .about-timeline__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 2.6vw, 30px);
  letter-spacing: 0.02em;
  color: var(--c-coral);
  margin: 0 0 6px;
  line-height: 1.2;
}

.page-about .about-timeline__body h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 1.5vw, 21px);
  color: var(--c-deep);
  margin: 0 0 8px;
}

.page-about .about-timeline__body p {
  margin: 0;
  max-width: 34em;
  font-size: 0.96em;
}

/* ---------- 团队 ---------- */
.page-about .about-section--team {
  background: var(--c-mist);
}

.page-about .about-team {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 52px);
  align-items: start;
}

.page-about .about-team__main > p {
  max-width: 34em;
}

.page-about .about-tabs {
  margin-top: clamp(18px, 3vw, 28px);
}

.page-about .about-tabs__bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  border-bottom: 1px solid var(--about-line);
  padding-bottom: 10px;
}

.page-about .about-tab {
  appearance: none;
  border: 1px solid var(--about-line);
  background: var(--c-white);
  color: var(--c-tide);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  padding: 9px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-about .about-tab:hover {
  border-color: var(--c-aqua);
  color: var(--c-deep);
}

.page-about .about-tab[aria-selected="true"],
.page-about .about-tab.is-active {
  background: var(--c-deep);
  border-color: var(--c-deep);
  color: var(--c-white);
}

.page-about .about-tab:focus-visible {
  outline: 2px solid var(--c-aqua);
  outline-offset: 2px;
}

.page-about .about-tab-panel {
  margin-top: 18px;
  background: var(--c-white);
  border: 1px solid var(--about-line);
  border-left: 3px solid var(--c-coral);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
  padding: 20px;
}

.page-about .about-tab-panel h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  color: var(--c-deep);
  margin: 0 0 8px;
}

.page-about .about-tab-panel p {
  margin: 0;
  font-size: 0.96em;
}

/* ---------- 引文 ---------- */
.page-about .about-quote {
  margin: 0;
  padding: clamp(34px, 5vw, 60px) 0;
  background: var(--c-tide);
  position: relative;
}

.page-about .about-quote::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--c-aqua), var(--c-coral));
}

.page-about .about-quote p {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(19px, 2.4vw, 28px);
  line-height: 1.6;
  color: var(--c-white);
  max-width: 26em;
  margin: 0 0 14px;
}

.page-about .about-quote cite {
  font-family: var(--font-body);
  font-style: normal;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--c-aqua);
}

/* ---------- 流程 ---------- */
.page-about .about-section--process {
  background: var(--c-mist);
}

.page-about .about-steps {
  list-style: none;
  margin: 0 0 clamp(28px, 4vw, 48px);
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .about-step {
  position: relative;
  padding: 22px 20px;
  background: var(--c-white);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
}

.page-about .about-step__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1;
  color: var(--c-shallow);
  display: block;
  margin-bottom: 10px;
}

.page-about .about-step h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 1.4vw, 20px);
  color: var(--c-deep);
  margin: 0 0 8px;
}

.page-about .about-step p {
  margin: 0;
  font-size: 0.95em;
}

.page-about .about-process__note {
  background: var(--c-deep);
  color: var(--c-mist);
  border-radius: var(--radius-m);
  padding: clamp(22px, 3.4vw, 38px);
  position: relative;
  overflow: hidden;
}

.page-about .about-process__note::after {
  content: "";
  position: absolute;
  right: -60px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 107, 74, 0.28), transparent 70%);
  pointer-events: none;
}

.page-about .about-process__note h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(18px, 1.7vw, 23px);
  color: var(--c-white);
  margin: 0 0 10px;
}

.page-about .about-process__note p {
  max-width: 36em;
  color: rgba(245, 250, 252, 0.85);
  font-size: 0.96em;
  margin-bottom: 20px;
}

.page-about .about-process__note .btn {
  position: relative;
  z-index: 1;
}

/* ---------- 生态 ---------- */
.page-about .about-section--eco {
  background: linear-gradient(180deg, var(--c-shallow), var(--c-mist));
}

.page-about .about-eco__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-about .about-eco__text p {
  max-width: 34em;
}

.page-about .about-honors {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-honor {
  background: var(--c-white);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-m);
  padding: 18px 18px 16px;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-about .about-honor h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  color: var(--c-deep);
  margin: 0 0 6px;
}

.page-about .about-honor p {
  margin: 0;
  font-size: 0.92em;
  color: var(--c-ink);
}

.page-about .about-honor:hover,
.page-about .about-honor:focus-within {
  transform: translateY(-2px);
  border-color: var(--c-coral);
  box-shadow: var(--shadow-2);
}

/* ---------- 原则 ---------- */
.page-about .about-section--principles {
  background: var(--c-deep);
  color: var(--c-mist);
  position: relative;
  overflow: hidden;
}

.page-about .about-section--principles::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(90% 70% at 12% 0%, rgba(47, 227, 193, 0.16), transparent 60%);
  pointer-events: none;
}

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

.page-about .about-section--principles h2 {
  color: var(--c-white);
}

.page-about .about-section--principles .kicker {
  color: var(--c-aqua);
}

.page-about .about-principles__head {
  max-width: 40em;
  margin-bottom: clamp(24px, 3.6vw, 40px);
}

.page-about .about-principles__list {
  list-style: none;
  margin: 0 0 clamp(26px, 4vw, 40px);
  padding: 0;
  display: grid;
  gap: 0;
}

.page-about .about-principles__list li {
  padding: 20px 0;
  border-top: 1px solid var(--about-line-soft);
}

.page-about .about-principles__list li:last-child {
  border-bottom: 1px solid var(--about-line-soft);
}

.page-about .about-principles__list h3 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(17px, 1.5vw, 20px);
  color: var(--c-aqua);
  margin: 0 0 6px;
}

.page-about .about-principles__list p {
  margin: 0;
  color: rgba(245, 250, 252, 0.82);
  font-size: 0.95em;
  max-width: 34em;
}

.page-about .about-principles__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-principles__cta .btn {
  text-decoration: none;
}

/* ---------- 平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-lines {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-eco__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-principles__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 26px;
  }

  .page-about .about-principles__list li {
    border-bottom: 1px solid var(--about-line-soft);
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__inner {
    grid-template-columns: 200px minmax(0, 1fr);
    align-items: start;
  }

  .page-about .about-proposition {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    align-items: start;
  }

  .page-about .about-proposition__lead {
    position: sticky;
    top: 96px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
  }

  .page-about .about-timeline {
    padding-left: 8px;
  }

  .page-about .about-timeline__item {
    padding-left: 46px;
  }

  .page-about .about-timeline__item::before {
    left: 8px;
  }

  .page-about .about-timeline__item::after {
    left: 4px;
    width: 10px;
    height: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-line,
  .page-about .about-honor,
  .page-about .about-hero__year,
  .page-about .about-tab {
    transition: none;
  }

  .page-about .about-line:hover,
  .page-about .about-honor:hover {
    transform: none;
  }
}
<<<END>>>