.page-about {
  background: var(--ink-900);
  color: var(--mist);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-about h1,
.page-about h2,
.page-about h3,
.page-about p,
.page-about ul,
.page-about ol,
.page-about dl,
.page-about dd,
.page-about figure {
  margin: 0;
}

.page-about ul,
.page-about ol {
  padding: 0;
  list-style: none;
}

.page-about :where(.about-flow) p {
  color: var(--metal);
  line-height: 1.8;
  font-size: 0.96rem;
}

.page-about strong {
  color: var(--fog);
  font-weight: 700;
}

/* ---------- 首屏 ---------- */
.page-about .about-intro {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-about .about-intro__grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  margin-top: clamp(18px, 3vw, 28px);
}

@media (min-width: 880px) {
  .page-about .about-intro__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: end;
  }
}

.page-about h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.1rem, 8.4vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: -0.005em;
  color: var(--fog);
  margin-top: 12px;
}

.page-about .bb-lede {
  margin-top: 14px;
  color: var(--metal-light);
  max-width: 60ch;
}

.page-about .about-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.page-about .about-facts__item {
  display: flex;
  flex-direction: column-reverse;
  gap: 3px;
  min-width: 0;
}

.page-about .about-facts__item dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--metal);
  line-height: 1.4;
}

.page-about .about-facts__item dd {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--fog);
  line-height: 1.2;
}

.page-about .about-facts__item .bb-num {
  font-size: 1.55rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ---------- 章节骨架 ---------- */
.page-about .about-layout {
  display: grid;
  gap: clamp(16px, 3vw, 40px);
  margin-top: clamp(28px, 4.6vw, 54px);
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: 170px minmax(0, 1fr);
    align-items: start;
    gap: clamp(28px, 3.4vw, 48px);
  }
}

.page-about .about-toc {
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: none;
}

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

.page-about .about-toc__label {
  display: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--metal);
  margin-bottom: 12px;
}

.page-about .about-toc__list {
  display: flex;
  gap: 8px;
}

.page-about .about-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 6px;
  white-space: nowrap;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--metal-light);
  font-size: 0.82rem;
  text-decoration: none;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-about .about-toc__list a:hover,
.page-about .about-toc__list a:focus-visible,
.page-about .about-toc__list a[aria-current="true"] {
  color: var(--cyan);
  border-color: rgba(39, 225, 232, 0.45);
  background: rgba(39, 225, 232, 0.07);
}

@media (min-width: 1000px) {
  .page-about .about-toc {
    position: sticky;
    top: 96px;
    overflow: visible;
    border-left: 1px solid var(--line);
    padding: 0 0 0 14px;
  }

  .page-about .about-toc__label {
    display: block;
  }

  .page-about .about-toc__list {
    display: grid;
    gap: 10px;
  }

  .page-about .about-toc__list a {
    padding: 0;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: 0.85rem;
    line-height: 1.35;
  }
}

.page-about .about-sec {
  padding-block: clamp(26px, 4.4vw, 46px);
  border-top: 1px solid var(--line);
}

.page-about .about-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-about .about-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 14px;
}

.page-about .about-sec__head h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.45rem, 4.6vw, 2.3rem);
  line-height: 1.08;
  letter-spacing: 0.005em;
  color: var(--fog);
}

.page-about .about-sec__lede {
  color: var(--metal);
  font-size: 0.94rem;
  line-height: 1.8;
  max-width: 62ch;
  margin-bottom: 20px;
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  display: grid;
  gap: 22px;
}

@media (min-width: 800px) {
  .page-about .about-origin {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
    gap: 30px;
  }
}

.page-about .about-origin__text > p + p {
  margin-top: 12px;
}

.page-about .about-check {
  display: grid;
  gap: 9px;
  margin-top: 18px;
}

.page-about .about-check li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .about-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--orange);
}

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

.page-about .about-flow .bb-media {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--line);
}

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

.page-about .about-flow .bb-media__cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--metal);
  line-height: 1.5;
}

/* ---------- 发展历程 ---------- */
.page-about .about-tlfig {
  margin: 0 0 18px;
}

.page-about .about-tl {
  display: grid;
  gap: 10px;
}

.page-about .about-tl__item {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-tl__item:hover,
.page-about .about-tl__item[open] {
  border-color: rgba(39, 225, 232, 0.42);
  background: var(--ink-700);
}

.page-about .about-tl__btn {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

.page-about .about-tl__btn::-webkit-details-marker {
  display: none;
}

.page-about .about-tl__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

.page-about .about-tl__name {
  font-size: 0.96rem;
  font-weight: 600;
  line-height: 1.45;
  color: var(--fog);
}

.page-about .about-tl__mark {
  position: relative;
  width: 14px;
  height: 14px;
  flex: none;
}

.page-about .about-tl__mark::before,
.page-about .about-tl__mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}

.page-about .about-tl__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-about .about-tl__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-about .about-tl__item[open] .about-tl__mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-about .about-tl__panel {
  padding: 0 16px 18px;
}

.page-about .about-flow .about-tl__panel p {
  border-left: 2px solid rgba(39, 225, 232, 0.35);
  padding-left: 12px;
  font-size: 0.92rem;
  color: var(--metal-light);
}

/* ---------- 团队分工 ---------- */
.page-about .about-roles {
  display: grid;
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .about-roles {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .about-role--data {
    grid-column: span 3;
    grid-row: span 2;
  }

  .page-about .about-role--content {
    grid-column: span 3;
  }

  .page-about .about-role--success {
    grid-column: span 3;
  }

  .page-about .about-role--design {
    grid-column: span 6;
    flex-direction: row;
    align-items: center;
    gap: 18px;
  }

  .page-about .about-role--design .about-role__num {
    flex: none;
  }

  .page-about .about-role--design p {
    flex: 1 1 auto;
    min-width: 0;
  }

  .page-about .about-role--design .about-role__if {
    margin: 0;
    padding-top: 0;
    border-top: 0;
    flex: none;
  }
}

.page-about .about-role {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(16px, 2.4vw, 22px);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, rgba(19, 41, 61, 0.96), rgba(11, 27, 43, 0.96));
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  transform: translateY(-3px);
  border-color: rgba(39, 225, 232, 0.45);
  box-shadow: 0 16px 38px -22px rgba(39, 225, 232, 0.6);
}

.page-about .about-role__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.7rem, 4.4vw, 2.3rem);
  line-height: 1;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role h3 {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--fog);
  letter-spacing: 0.01em;
}

.page-about .about-role__if {
  margin-top: auto;
  padding-top: 10px;
  border-top: 1px dashed var(--line-firm);
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  color: var(--metal-light);
  transition: color 0.3s var(--ease);
}

.page-about .about-role__if span {
  color: var(--cyan);
}

.page-about .about-role:hover .about-role__if,
.page-about .about-role:focus-within .about-role__if {
  color: var(--fog);
}

/* ---------- 数据来源 ---------- */
.page-about .about-data {
  display: grid;
  gap: 22px;
}

@media (min-width: 840px) {
  .page-about .about-data {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: start;
    gap: 30px;
  }
}

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

.page-about .about-chain {
  display: grid;
  gap: 12px;
  margin: 18px 0 14px;
}

.page-about .about-chain li {
  display: flex;
  gap: 10px;
  align-items: baseline;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--metal);
}

.page-about .about-chain li strong {
  color: var(--cyan);
  font-weight: 700;
}

.page-about .about-net {
  display: block;
  width: 100%;
  max-width: 340px;
  height: auto;
  color: rgba(39, 225, 232, 0.55);
  margin: 2px 0 16px;
}

.page-about .about-data__text .about-note {
  border-left: 2px solid var(--amber);
  padding-left: 12px;
  font-size: 0.86rem;
  color: var(--metal-light);
}

/* ---------- 服务覆盖 ---------- */
.page-about .about-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 20px;
}

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

.page-about .about-band__cell {
  background-color: var(--ink-800);
  background-image: repeating-linear-gradient(90deg, rgba(195, 204, 214, 0.07) 0 1px, transparent 1px 14px);
  padding: 18px 16px;
}

.page-about :where(.about-flow) .about-band__num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 5.6vw, 2.7rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--fog);
  font-variant-numeric: tabular-nums;
}

.page-about .about-band__num span {
  font-size: 0.5em;
  color: var(--orange);
  margin-left: 2px;
  vertical-align: super;
}

.page-about :where(.about-flow) .about-band__label {
  margin-top: 8px;
  font-size: 0.8rem;
  line-height: 1.55;
  color: var(--metal);
}

.page-about .about-scenes {
  display: grid;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-about .about-scenes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .about-scene {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(19, 41, 61, 0.55);
  transition: border-color 0.3s var(--ease);
}

.page-about .about-scene:hover {
  border-color: rgba(255, 106, 42, 0.4);
}

.page-about .about-scene h3 {
  font-size: 0.97rem;
  font-weight: 700;
  color: var(--fog);
  margin: 8px 0 7px;
  line-height: 1.5;
}

/* ---------- 荣誉与下一步 ---------- */
.page-about .about-honor {
  display: grid;
  gap: 12px;
}

@media (min-width: 700px) {
  .page-about .about-honor {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .about-honor__card {
  padding: 20px;
  border: 1px solid rgba(255, 106, 42, 0.3);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(255, 106, 42, 0.13), rgba(11, 27, 43, 0.94) 58%);
}

.page-about .about-honor__year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  font-variant-numeric: tabular-nums;
}

.page-about .about-honor__card h3 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: 0.01em;
  color: var(--fog);
  margin: 8px 0 9px;
  line-height: 1.2;
}

.page-about .about-next {
  margin-top: 16px;
  padding: 18px 20px;
  border-left: 3px solid var(--cyan);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: rgba(39, 225, 232, 0.06);
}

.page-about .about-next h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--fog);
  margin-bottom: 12px;
}

.page-about .about-next ul {
  display: grid;
  gap: 8px;
}

.page-about .about-next li {
  position: relative;
  padding-left: 16px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--metal-light);
}

.page-about .about-next li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
}

/* ---------- 收束 ---------- */
.page-about .about-cta-wrap {
  padding-top: clamp(26px, 4.4vw, 52px);
}

.page-about .about-cta {
  padding: clamp(22px, 4vw, 42px);
  border: 1px solid var(--line-firm);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(130% 150% at 100% 0%, rgba(39, 225, 232, 0.16), transparent 62%),
    linear-gradient(160deg, var(--ink-800), var(--ink-950));
}

.page-about .about-cta h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 4.6vw, 2.2rem);
  line-height: 1.12;
  color: var(--fog);
}

.page-about .about-cta p {
  margin-top: 12px;
  max-width: 62ch;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--metal-light);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

@media (max-width: 420px) {
  .page-about .about-cta__links .bb-btn {
    width: 100%;
    justify-content: center;
  }
}
<<<END>>>