.page-about {
  --about-body-text: rgba(242, 246, 250, .82);
  --about-line: rgba(122, 139, 158, .24);
  --about-cut: 22px;
  position: relative;
  display: block;
  background: var(--ink);
  color: var(--about-body-text);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about .mono {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(92px, 15vw, 148px);
  padding-bottom: clamp(44px, 7vw, 76px);
  background:
    radial-gradient(120% 100% at 86% 0%, rgba(0, 228, 208, .13), transparent 58%),
    linear-gradient(180deg, var(--ink) 0%, var(--deep) 100%);
  border-bottom: 1px solid var(--about-line);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: 16px;
  width: 52%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0, 228, 208, .8));
  transform: rotate(-7deg);
  pointer-events: none;
}

.page-about .about-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-about .about-hero .breadcrumb {
  margin-bottom: clamp(28px, 5vw, 52px);
}

.page-about .about-hero .eyebrow {
  margin: 0 0 12px;
}

.page-about .about-title {
  margin: 0 0 clamp(18px, 3vw, 30px);
  font-family: var(--font-display);
  font-weight: 200;
  font-size: clamp(44px, 11vw, 118px);
  line-height: .96;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-about .about-hero .lead {
  max-width: 64ch;
  margin: 0;
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.8;
  color: var(--about-body-text);
}

.page-about .hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(34px, 6vw, 58px) 0 0;
  padding: 0;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .hero-stat {
  padding: 18px 16px 20px;
  background: var(--ink);
}

.page-about .hero-stat dt {
  margin: 0;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-about .hero-stat dd {
  margin: 10px 0 0;
  display: flex;
  align-items: baseline;
  gap: 5px;
  font-size: clamp(28px, 7vw, 46px);
  font-weight: 300;
  line-height: 1;
  color: var(--white);
}

.page-about .hero-stat .stat-num {
  font-size: inherit;
  color: var(--cyan);
  letter-spacing: -.01em;
}

.page-about .hero-stat .unit {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 400;
  color: var(--mist);
}

/* ---------- 主体：索引 + 面板 ---------- */
.page-about .about-body {
  display: grid;
  gap: clamp(28px, 5vw, 48px);
  padding-top: clamp(44px, 8vw, 88px);
  padding-bottom: clamp(64px, 11vw, 128px);
}

.page-about .about-rail {
  position: sticky;
  top: 0;
  z-index: 3;
  margin: 0;
  padding: 10px 0;
  background: linear-gradient(180deg, var(--ink) 78%, rgba(5, 9, 15, 0));
}

.page-about .rail-title {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
}

.page-about .rail-list {
  display: flex;
  gap: 18px;
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

.page-about .rail-list::-webkit-scrollbar {
  display: none;
}

.page-about .rail-link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 2px 0;
  white-space: nowrap;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mist);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-about .rail-link .mono {
  font-size: 11px;
  color: rgba(0, 228, 208, .45);
}

.page-about .rail-link:hover,
.page-about .rail-link:focus-visible,
.page-about .rail-link.is-active,
.page-about .rail-link[aria-current="true"] {
  color: var(--cyan);
}

.page-about .about-panels {
  display: grid;
  gap: clamp(44px, 7vw, 96px);
  min-width: 0;
}

.page-about .about-panel {
  position: relative;
  min-width: 0;
  padding: clamp(22px, 3.4vw, 42px);
  background: linear-gradient(158deg, var(--deep) 0%, var(--ink) 72%);
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
}

.page-about .about-panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 68px;
  height: 2px;
  background: var(--cyan);
}

.page-about .panel-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
}

.page-about .panel-num {
  padding: 3px 8px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.5;
}

.page-about .panel-title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(24px, 4.2vw, 42px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-about .panel-sum {
  margin: 0 0 clamp(20px, 3vw, 30px);
  padding-top: 12px;
  border-top: 1px solid var(--about-line);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mist);
  word-break: break-word;
}

.page-about .panel-body {
  min-width: 0;
}

.page-about .panel-body p {
  margin: 0 0 16px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--about-body-text);
}

.page-about .panel-body p:last-child {
  margin-bottom: 0;
}

.page-about .inline-link {
  color: var(--aqua);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 123, 255, .5);
  transition: color .25s var(--ease), border-color .25s var(--ease);
}

.page-about .inline-link:hover,
.page-about .inline-link:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 流程 ---------- */
.page-about .process-figure {
  position: relative;
  margin: 0 0 clamp(18px, 3vw, 28px);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

.page-about .process-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(.85) brightness(.72);
}

.page-about .process-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 9, 15, .1), rgba(5, 9, 15, .65)),
    repeating-linear-gradient(180deg, rgba(0, 228, 208, .06) 0 1px, transparent 1px 5px);
  pointer-events: none;
}

.page-about .process-track {
  display: block;
  width: 100%;
  height: auto;
  margin: 0 0 4px;
}

.page-about .process-path {
  fill: none;
  stroke: rgba(0, 228, 208, .38);
  stroke-width: 2;
  stroke-dasharray: 10 8;
}

.page-about .process-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .process-step {
  position: relative;
  padding: 18px 20px;
  background: var(--deep);
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.page-about .process-step::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .3s var(--ease);
}

.page-about .process-step:hover,
.page-about .process-step:focus-within {
  transform: translateX(6px);
  background: var(--glass);
}

.page-about .process-step:hover::before,
.page-about .process-step:focus-within::before {
  transform: scaleY(1);
}

.page-about .process-step .step-index {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-about .process-step h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--white);
}

.page-about .process-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-body-text);
}

/* ---------- 服务地区 ---------- */
.page-about .region-split {
  display: grid;
  gap: clamp(22px, 3.5vw, 36px);
}

.page-about .region-copy p {
  margin: 0 0 14px;
}

.page-about .contact-dl {
  margin: 22px 0 0;
  padding: 0;
  border-top: 1px solid var(--about-line);
}

.page-about .contact-dl > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line);
}

.page-about .contact-dl dt {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-about .contact-dl dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  color: var(--white);
  overflow-wrap: anywhere;
}

.page-about .region-figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 20px), calc(100% - 20px) 100%, 0 100%);
}

.page-about .region-figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 220px;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(.8) brightness(.68);
}

.page-about .region-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(0, 228, 208, .14), transparent 55%);
  pointer-events: none;
}

/* ---------- 赛季节点 ---------- */
.page-about .season-figure {
  position: relative;
  margin: 0 0 clamp(24px, 4vw, 40px);
  overflow: hidden;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-about .season-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  filter: saturate(.7) brightness(.6);
}

.page-about .season-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 9, 15, .15), rgba(5, 9, 15, .8));
  pointer-events: none;
}

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

.page-about .season-item {
  display: grid;
  gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--about-line);
  transition: padding-left .3s var(--ease);
}

.page-about .season-item:hover,
.page-about .season-item:focus-within {
  padding-left: 10px;
}

.page-about .season-year {
  font-size: clamp(28px, 7vw, 54px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: -.02em;
  color: rgba(122, 139, 158, .48);
  transition: color .3s var(--ease);
}

.page-about .season-item:hover .season-year,
.page-about .season-item:focus-within .season-year {
  color: var(--cyan);
}

.page-about .season-copy h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--white);
}

.page-about .season-copy p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--about-body-text);
}

/* ---------- 继续浏览 ---------- */
.page-about .about-next {
  margin-top: clamp(8px, 2vw, 20px);
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--about-line);
}

.page-about .next-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(20px, 3vw, 28px);
  letter-spacing: .01em;
  color: var(--white);
}

.page-about .next-grid {
  display: grid;
  gap: 1px;
  margin-top: 20px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .next-link {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--ink);
  text-decoration: none;
  transition: background .3s var(--ease), transform .3s var(--ease);
}

.page-about .next-link strong {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 16px;
  color: var(--white);
  transition: color .3s var(--ease);
}

.page-about .next-link span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .next-link:hover,
.page-about .next-link:focus-visible {
  background: var(--deep);
  transform: translateX(4px);
}

.page-about .next-link:hover strong,
.page-about .next-link:focus-visible strong {
  color: var(--cyan);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .contact-dl > div {
    grid-template-columns: 108px minmax(0, 1fr);
  }

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

@media (min-width: 760px) {
  .page-about .region-split {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-about .season-item {
    grid-template-columns: 168px minmax(0, 1fr);
    align-items: baseline;
    gap: 20px;
  }

  .page-about .season-copy h3,
  .page-about .season-copy p {
    max-width: 56ch;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero::after {
    bottom: 34px;
    width: 40%;
  }

  .page-about .about-body {
    grid-template-columns: minmax(150px, 3fr) minmax(0, 9fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }

  .page-about .about-rail {
    top: 108px;
    padding: 0 0 0 18px;
    background: none;
    border-left: 1px solid var(--about-line);
  }

  .page-about .rail-title {
    margin-bottom: 18px;
  }

  .page-about .rail-list {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-about .rail-list li + li {
    margin-top: 16px;
  }

  .page-about .rail-link {
    display: block;
    font-size: 13px;
    transition: color .25s var(--ease), transform .25s var(--ease);
  }

  .page-about .rail-link .mono {
    display: block;
    margin-bottom: 2px;
  }

  .page-about .rail-link:hover,
  .page-about .rail-link:focus-visible,
  .page-about .rail-link.is-active,
  .page-about .rail-link[aria-current="true"] {
    transform: translateX(4px);
  }
}

@media (min-width: 1120px) {
  .page-about .process-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .process-step,
  .page-about .season-item,
  .page-about .next-link,
  .page-about .rail-link,
  .page-about .season-year {
    transition: none;
  }
}
<<<END>>>