.page-about {
  --about-rail: 180px;
  --about-pad: 44px;
  position: relative;
  background: var(--ink);
  color: var(--ice);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  overflow-x: clip;
}

.page-about .about-halo {
  position: absolute;
  display: block;
  pointer-events: none;
  z-index: 0;
}
.page-about .about-halo--hero {
  top: -140px;
  right: -160px;
  width: 420px;
  height: 420px;
}
.page-about .about-halo--foot {
  bottom: -180px;
  left: -170px;
  width: 400px;
  height: 400px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 28px 0 40px;
  background:
    linear-gradient(168deg, var(--ink-2) 0%, var(--ink) 62%);
  border-bottom: 1px solid var(--line);
}
.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}
.page-about .about-hero__grid {
  display: grid;
  gap: 26px;
  margin-top: 18px;
}
.page-about .about-hero__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8vw, 66px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--ice);
}
.page-about .about-hero__mark {
  display: inline-block;
  color: var(--lime);
  transform: skewX(-6deg);
}
.page-about .about-hero__text {
  margin: 18px 0 0;
  max-width: 46ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}
.page-about .about-hero__media {
  position: relative;
  margin: 0;
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-solid);
}
.page-about .about-hero__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* 数据条 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 30px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.page-about .about-stats .stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 14px;
  background: rgba(18, 74, 99, 0.4);
  border-left: 2px solid var(--line-strong);
  border-radius: var(--radius-solid);
}
.page-about .about-stats .stat--lime { border-left-color: var(--lime); }
.page-about .about-stats .stat--teal { border-left-color: var(--teal); }
.page-about .about-stats .stat--coral { border-left-color: var(--coral); }
.page-about .about-stats .stat--amber { border-left-color: var(--amber); }
.page-about .about-stats .stat__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 26px;
  line-height: 1.1;
  color: var(--ice);
}
.page-about .about-stats .stat--lime .stat__value { color: var(--lime); }
.page-about .about-stats .stat--teal .stat__value { color: var(--teal); }
.page-about .about-stats .stat--coral .stat__value { color: var(--coral); }
.page-about .about-stats .stat--amber .stat__value { color: var(--amber); }
.page-about .stat__unit {
  font-size: 13px;
  font-weight: 500;
  margin-left: 2px;
}
.page-about .about-stats .stat__label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
}

/* 章节索引 */
.page-about .about-jump {
  margin-top: 30px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.page-about .about-jump__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}
.page-about .about-jump__item a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 13px;
  font-size: 13px;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}
.page-about .about-jump__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--lime);
}
.page-about .about-jump__item a:hover,
.page-about .about-jump__item a:focus-visible {
  color: var(--ice);
  border-color: var(--lime);
  background: rgba(43, 255, 136, 0.1);
}

/* ---------- 章节骨架 ---------- */
.page-about .about-chapter {
  position: relative;
  padding: var(--about-pad) 0;
  overflow: hidden;
  scroll-margin-top: 90px;
}
.page-about .about-chapter .shell {
  position: relative;
  z-index: 1;
}
.page-about .about-chapter--band {
  background: linear-gradient(152deg, rgba(18, 74, 99, 0.85) 0%, rgba(6, 27, 46, 0.95) 68%);
}
.page-about .about-chapter--band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(43, 255, 136, 0.12) 0%, rgba(6, 27, 46, 0) 52%);
  clip-path: polygon(0 2.5%, 100% 0, 100% 97%, 0 100%);
  pointer-events: none;
}
.page-about .about-chapter--soft {
  background: linear-gradient(180deg, var(--ink) 0%, rgba(11, 47, 74, 0.72) 100%);
}
.page-about .about-chapter--flow {
  background: linear-gradient(200deg, rgba(18, 74, 99, 0.5) 0%, var(--ink) 72%);
}
.page-about .about-chapter--contact {
  background: radial-gradient(120% 90% at 12% 100%, rgba(55, 214, 192, 0.16) 0%, rgba(6, 27, 46, 0) 60%), var(--ink);
  border-top: 1px solid var(--line);
}

.page-about .about-chapter__grid {
  display: grid;
  gap: 18px;
}
.page-about .about-chapter__aside {
  display: flex;
  align-items: baseline;
  gap: 14px;
}
.page-about .about-chapter__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(157, 185, 201, 0.28);
  -webkit-text-stroke: 1px var(--line-strong);
}
.page-about .about-chapter__index {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--lime);
}
.page-about .about-chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 5.2vw, 38px);
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--ice);
}
.page-about .about-chapter__lead {
  margin: 14px 0 0;
  max-width: 60ch;
  color: var(--mist);
  font-size: 15px;
  line-height: 1.75;
}

/* ---------- 01 入口路径 ---------- */
.page-about .about-paths {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}
.page-about .about-paths li {
  display: grid;
  gap: 6px;
  padding: 15px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}
.page-about .about-paths .link-arrow {
  font-weight: 700;
  color: var(--lime-soft);
}

/* ---------- 02 内容标准 ---------- */
.page-about .about-standards {
  display: grid;
  gap: 0;
  margin-top: 22px;
  border-top: 1px solid var(--line-strong);
}
.page-about .about-standard {
  padding: 18px 0 16px;
  border-bottom: 1px solid var(--line);
}
.page-about .about-standard__label {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--teal);
  padding: 3px 8px;
  border: 1px solid rgba(55, 214, 192, 0.42);
  border-radius: var(--radius-solid);
}
.page-about .about-standard__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--ice);
}
.page-about .about-standard p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 03 工作流 ---------- */
.page-about .about-flow__media {
  position: relative;
  margin: 22px 0 0;
}
.page-about .about-flow__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 12 / 7;
  border-radius: var(--radius-solid);
}
.page-about .about-flow {
  margin: 20px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-about .about-step {
  position: relative;
  padding: 16px 16px 15px;
  background: rgba(18, 74, 99, 0.34);
  border-left: 3px solid var(--lime);
  border-radius: var(--radius-solid);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
.page-about .about-step:hover,
.page-about .about-step:focus-within {
  background: rgba(18, 74, 99, 0.62);
  border-left-color: var(--coral);
}
.page-about .about-step__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--teal);
}
.page-about .about-step__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--ice);
}
.page-about .about-step__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}
.page-about .about-step__more {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--lime-soft);
  max-height: none;
  opacity: 1;
  overflow: visible;
}

/* ---------- 04 团队 ---------- */
.page-about .about-team {
  display: grid;
  gap: 16px;
  margin-top: 22px;
}
.page-about .about-team__item {
  padding-top: 14px;
  border-top: 2px solid var(--line-strong);
}
.page-about .about-team__role {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 800;
  color: var(--lime);
}
.page-about .about-team__desc {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .about-team__media {
  margin: 24px 0 0;
}
.page-about .about-team__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 5 / 3;
  border-radius: var(--radius-solid);
}
.page-about .about-team__note {
  margin: 20px 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-glass);
}
.page-about .about-team__note .link-arrow {
  color: var(--lime);
}

/* ---------- 05 场景 ---------- */
.page-about .about-scenes {
  display: grid;
  margin-top: 22px;
  border-top: 1px solid var(--line-strong);
}
.page-about .about-scene {
  display: grid;
  gap: 8px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}
.page-about .about-scene__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--ice);
}
.page-about .about-scene__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}
.page-about .about-scene__link {
  justify-self: start;
  font-size: 13.5px;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 06 联系 ---------- */
.page-about .about-contact {
  margin-top: 22px;
  padding: 20px 18px;
  background: var(--glass);
  border: 1px solid var(--glass-line);
  border-radius: var(--radius-glass);
}
.page-about .about-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-about .about-contact__list li {
  display: grid;
  gap: 3px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}
.page-about .about-contact__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.page-about .about-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--teal);
}
.page-about .about-contact__val {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--ice);
  word-break: break-all;
}
.page-about .about-contact__note {
  margin: 16px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}
.page-about .about-contact__btn {
  margin-top: 16px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-jump__list {
    flex-wrap: wrap;
    overflow-x: visible;
  }
  .page-about .about-paths li {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }
  .page-about .about-flow {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }
  .page-about .about-step__more {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    overflow: hidden;
    transition: max-height 0.24s ease, opacity 0.24s ease, margin-top 0.24s ease;
  }
  .page-about .about-step:hover .about-step__more,
  .page-about .about-step:focus-within .about-step__more {
    max-height: 140px;
    opacity: 1;
    margin-top: 8px;
  }
  .page-about .about-team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 28px;
  }
  .page-about .about-scene {
    grid-template-columns: minmax(0, 220px) minmax(0, 1fr) 128px;
    align-items: start;
    gap: 20px;
  }
  .page-about .about-scene__link {
    justify-self: end;
    text-align: right;
  }
  .page-about .about-contact {
    padding: 26px 28px;
  }
  .page-about .about-contact__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
  .page-about .about-contact__list li {
    border-bottom: 0;
    padding-bottom: 0;
    align-content: start;
  }
}

@media (min-width: 900px) {
  .page-about {
    --about-pad: 76px;
  }
  .page-about .about-hero {
    padding: 40px 0 56px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 48px;
    align-items: end;
    margin-top: 24px;
  }
  .page-about .about-hero__media {
    transform: translateY(-12px);
  }
  .page-about .about-chapter__grid {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
  .page-about .about-chapter__aside {
    display: block;
    padding-top: 4px;
  }
  .page-about .about-chapter__num {
    display: block;
    font-size: 56px;
  }
  .page-about .about-chapter__index {
    margin-top: 10px;
    padding-left: 2px;
  }
  .page-about .about-standards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 40px;
  }
  .page-about .about-halo--hero {
    width: 620px;
    height: 620px;
    top: -220px;
    right: -180px;
  }
  .page-about .about-halo--foot {
    width: 560px;
    height: 560px;
    left: -220px;
    bottom: -240px;
  }
}

@media (min-width: 1180px) {
  .page-about .about-chapter__grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 72px;
  }
  .page-about .about-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-chapter__title {
    font-size: 40px;
  }
}
<<<END>>>