.page-about {
  --about-rule: rgba(30, 38, 36, 0.14);
  --about-rule-soft: rgba(30, 38, 36, 0.07);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about [data-season="spring"] { --season: var(--spring); }
.page-about [data-season="summer"] { --season: var(--summer); }
.page-about [data-season="autumn"] { --season: var(--autumn); }
.page-about [data-season="winter"] { --season: var(--winter-deep); }

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

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

.page-about .about-section__head {
  max-width: 62ch;
  margin-bottom: clamp(26px, 4.4vw, 46px);
}

.page-about .about-section__head h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.24;
  letter-spacing: 0.01em;
  margin: 0 0 clamp(10px, 1.8vw, 16px);
}

.page-about .about-section__lead {
  margin: 0;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding-top: clamp(18px, 3.4vw, 34px);
  padding-bottom: clamp(30px, 5vw, 56px);
}

.page-about .about-hero__head {
  max-width: 62ch;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 7.2vw, 64px);
  line-height: 1.16;
  letter-spacing: 0.01em;
  margin: 0 0 clamp(16px, 2.6vw, 26px);
  max-width: 15ch;
}

.page-about .about-hero__intro {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(32px, 6vw, 56px) 0 0;
  padding: clamp(18px, 3vw, 28px) 0 0;
  border-top: 1px solid var(--about-rule);
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 28px);
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.page-about .about-stat__num {
  font-family: var(--font-mono);
  font-size: clamp(21px, 3.2vw, 31px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-about .about-stat__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

.page-about .season-band {
  margin-top: clamp(28px, 5vw, 48px);
}

/* ---------- 品牌起点 ---------- */

.page-about .about-origin__grid {
  display: grid;
  gap: clamp(26px, 5vw, 60px);
}

.page-about .about-origin h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4.6vw, 40px);
  line-height: 1.24;
  margin: 0 0 clamp(14px, 2vw, 22px);
}

.page-about .about-origin__figure {
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, var(--notch) 100%, 0 calc(100% - var(--notch)));
  background: var(--mist);
}

/* ---------- 服务对象 ---------- */

.page-about .about-audience__list {
  display: grid;
  gap: clamp(12px, 2vw, 18px);
}

.page-about .about-scene {
  background: var(--white);
  border: 1px solid var(--about-rule);
  border-left: 3px solid var(--season);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, 0 100%);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-scene:hover,
.page-about .about-scene:focus-within {
  border-color: var(--about-rule);
  border-left-color: var(--season);
  background: var(--paper);
}

.page-about .about-scene > summary {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: clamp(15px, 2.6vw, 22px) clamp(16px, 3vw, 28px);
  cursor: pointer;
  list-style: none;
}

.page-about .about-scene > summary::-webkit-details-marker {
  display: none;
}

.page-about .about-scene > summary:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: -3px;
}

.page-about .about-scene__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--season);
}

.page-about .about-scene__title {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.4vw, 21px);
  color: var(--ink);
}

.page-about .about-scene__hint {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-soft);
  margin-left: auto;
}

.page-about .about-scene > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--season);
  width: 1.2em;
  text-align: center;
}

.page-about .about-scene[open] > summary::after {
  content: "–";
}

.page-about .about-scene__body {
  padding: 0 clamp(16px, 3vw, 28px) clamp(18px, 3vw, 26px);
}

.page-about .about-scene__body p {
  margin: 0;
  max-width: 68ch;
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- 四季服务路径 ---------- */

.page-about .about-path__grid {
  display: grid;
  gap: clamp(26px, 4.6vw, 54px);
  align-items: start;
}

.page-about .about-path__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(12px, 2.2vw, 18px);
}

.page-about .about-path__step {
  position: relative;
  background-color: var(--white);
  background-image: linear-gradient(var(--season), var(--season));
  background-size: 1px 100%;
  background-position: calc(clamp(22px, 3.6vw, 34px) + 1px) 0;
  background-repeat: no-repeat;
  border: 1px solid var(--about-rule);
  padding: clamp(15px, 2.6vw, 22px) clamp(18px, 3vw, 28px) clamp(15px, 2.6vw, 22px) clamp(48px, 7vw, 72px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--notch)), calc(100% - var(--notch)) 100%, 0 100%);
  transition: border-color 0.2s ease;
}

.page-about .about-path__step:hover {
  border-color: var(--season);
}

.page-about .about-path__dot {
  position: absolute;
  box-sizing: content-box;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--season);
  left: calc(clamp(22px, 3.6vw, 34px) + 1px);
  top: clamp(24px, 3.6vw, 32px);
  transform: translate(-50%, -50%);
}

.page-about .about-path__step h3 {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.3vw, 21px);
  margin: 0 0 6px;
}

.page-about .about-path__step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-about .about-path__figure {
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, var(--notch) 100%, 0 calc(100% - var(--notch)));
  background: var(--mist);
}

/* ---------- 内容中心 ---------- */

.page-about .about-hub__grid {
  display: grid;
  gap: clamp(26px, 4.6vw, 56px);
  align-items: start;
}

.page-about .about-hub__copy p {
  font-size: clamp(15px, 1.8vw, 17px);
}

.page-about .about-hub__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-rule);
}

.page-about .about-hub__item {
  display: grid;
  grid-template-columns: 3.4rem minmax(0, 1fr);
  gap: 2px 14px;
  padding: clamp(13px, 2.2vw, 18px) 0;
  border-bottom: 1px solid var(--about-rule-soft);
  transition: background-color 0.18s ease;
}

.page-about .about-hub__item:hover {
  background: var(--mist);
}

.page-about .about-hub__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--season);
  padding-top: 3px;
}

.page-about .about-hub__name {
  grid-column: 2;
  font-size: clamp(15px, 1.9vw, 17px);
  color: var(--ink);
}

.page-about .about-hub__desc {
  grid-column: 2;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 发展阶段 ---------- */

.page-about .about-timeline__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-bottom: clamp(24px, 3.8vw, 38px);
}

.page-about .about-timeline__jump a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink-soft);
  background: var(--white);
  border: 1px solid var(--about-rule);
  padding: 7px 13px;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-about .about-timeline__jump a:hover,
.page-about .about-timeline__jump a:focus-visible {
  color: var(--ink);
  border-color: var(--season);
  background: var(--paper);
}

.page-about .about-timeline__list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 clamp(26px, 4.4vw, 40px);
  position: relative;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--spring), var(--summer), var(--autumn), var(--winter-deep));
  opacity: 0.5;
}

.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(26px, 4.4vw, 46px);
}

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

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  box-sizing: content-box;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--paper);
  border: 3px solid var(--autumn);
  left: calc(0.5px - clamp(26px, 4.4vw, 40px));
  top: 8px;
}

.page-about .about-timeline__year {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--autumn-soft);
  margin-bottom: 6px;
}

.page-about .about-timeline__item h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  margin: 0 0 8px;
}

.page-about .about-timeline__item p {
  margin: 0;
  max-width: 64ch;
  font-size: clamp(15px, 1.7vw, 16.5px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-timeline__figure {
  margin-top: clamp(26px, 4.6vw, 48px);
  max-width: 720px;
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, var(--notch) 100%, 0 calc(100% - var(--notch)));
  background: var(--mist);
}

/* ---------- 团队与生态 ---------- */

.page-about .about-team__grid {
  display: grid;
  gap: clamp(16px, 2.8vw, 26px);
}

.page-about .about-team__card {
  padding: clamp(20px, 3.4vw, 32px);
  clip-path: polygon(0 0, calc(100% - var(--notch)) 0, 100% var(--notch), 100% 100%, var(--notch) 100%, 0 calc(100% - var(--notch)));
  transition: box-shadow 0.2s ease, border-color 0.2s ease;
}

.page-about .about-team__card:hover {
  border-color: var(--season);
  box-shadow: 0 12px 30px rgba(44, 58, 94, 0.09);
}

.page-about .about-card__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--season);
  padding-bottom: 10px;
}

.page-about .about-team__card h3 {
  font-family: var(--font-display);
  font-size: clamp(18px, 2.3vw, 22px);
  margin: 0 0 10px;
}

.page-about .about-team__card p {
  margin: 0;
  font-size: clamp(14.5px, 1.7vw, 16px);
  line-height: 1.9;
  color: var(--ink-soft);
}

/* ---------- 荣誉与资质 ---------- */

.page-about .about-honors__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 20px);
}

.page-about .about-honors__item {
  padding: clamp(18px, 3vw, 26px);
  background: var(--winter);
  border: 1px solid var(--about-rule);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-about .about-honors__item:hover,
.page-about .about-honors__item:focus-within,
.page-about .about-honors__item:focus-visible {
  border-color: var(--season);
  box-shadow: 0 10px 26px rgba(44, 58, 94, 0.09);
  outline: none;
}

.page-about .about-honors__item h3 {
  font-family: var(--font-display);
  font-size: clamp(17px, 2.2vw, 20px);
  margin: 12px 0 8px;
}

.page-about .about-honors__note {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 收尾 ---------- */

.page-about .about-next {
  padding-bottom: clamp(48px, 7vw, 92px);
}

.page-about .about-next__inner {
  border-top: 1px solid var(--about-rule);
  padding-top: clamp(26px, 4.4vw, 48px);
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-about .about-next__copy h2 {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 36px);
  line-height: 1.26;
  margin: 0 0 clamp(10px, 1.8vw, 16px);
}

.page-about .about-next__copy p {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.8vw, 17px);
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .about-honors__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-about .about-team__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: start;
  }

  .page-about .about-team__card:nth-child(2) {
    margin-top: clamp(24px, 5vw, 64px);
  }
}

@media (min-width: 900px) {
  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-origin__figure {
    margin-top: clamp(20px, 4vw, 64px);
  }

  .page-about .about-hub__grid {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }
}

@media (min-width: 960px) {
  .page-about .about-path__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
  }

  .page-about .about-path__figure {
    margin-top: clamp(30px, 6vw, 88px);
  }
}

@media (min-width: 1024px) {
  .page-about .about-next__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: end;
  }
}

@media (max-width: 520px) {
  .page-about .about-scene__hint {
    margin-left: 0;
    flex-basis: 100%;
  }

  .page-about .about-hero h1 {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>