.page-about {
  --ov-sec-pad: 44px;
}

.page-about .ov-sec {
  padding: 44px 0 36px;
}

@media (min-width: 900px) {
  .page-about .ov-sec {
    padding: 72px 0 56px;
  }
}

/* 首屏 */
.page-about .ov-hero .ov-sec {
  padding-top: 32px;
}

.page-about .ov-kicker {
  margin: 18px 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-about h1 {
  margin: 0 0 18px;
  max-width: 18ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 28px;
  line-height: 1.26;
  letter-spacing: -0.01em;
  color: var(--body-text);
}

@media (min-width: 760px) {
  .page-about h1 {
    font-size: 40px;
  }
}

@media (min-width: 1200px) {
  .page-about h1 {
    font-size: 56px;
    max-width: 16ch;
  }
}

.page-about .ov-lead {
  margin: 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
  opacity: 0.86;
}

.page-about .ov-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: 32px;
  background: var(--line);
  border: 1px solid var(--line);
}

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

.page-about .ov-stat {
  padding: 16px 14px;
  background: var(--ink-2);
}

.page-about .ov-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 28px;
  line-height: 1.1;
  color: var(--amber);
}

.page-about .ov-stat__label {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--muted);
}

/* 通用标题 */
.page-about h2 {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 24px;
  line-height: 1.35;
  color: var(--body-text);
}

@media (min-width: 760px) {
  .page-about h2 {
    font-size: 28px;
  }
}

.page-about h3 {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--body-text);
}

/* 浅底反转区 */
.page-about .chapter--dark .chapter__title {
  color: var(--ink);
}

.page-about .chapter--dark .chapter__note {
  color: #3A4763;
}

.page-about .chapter--dark .chapter__index {
  color: var(--blue);
}

/* 图 */
.page-about .ov-figure {
  margin: 28px 0 0;
}

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

/* 时间轴 */
.page-about .tl {
  position: relative;
  margin: 36px 0 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-about .tl::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 4px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

@media (min-width: 760px) {
  .page-about .tl {
    padding-left: 56px;
  }

  .page-about .tl::before {
    left: 17px;
  }
}

.page-about .tl__item {
  position: relative;
  padding: 0 0 30px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 26px;
  width: 9px;
  height: 9px;
  background: var(--ink);
  border: 1px solid var(--cyan);
  transition: background var(--t-fast) ease, box-shadow var(--t-fast) ease;
}

@media (min-width: 760px) {
  .page-about .tl__item::before {
    left: -43px;
  }
}

.page-about .tl__item:hover::before,
.page-about .tl__item:focus-within::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px rgba(46, 230, 214, 0.14);
}

.page-about .tl__tag {
  display: inline-block;
  margin-bottom: 10px;
  padding: 2px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--amber);
  border: 1px solid rgba(245, 179, 37, 0.36);
}

.page-about .tl__text {
  margin: 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

/* 团队 */
.page-about .team {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 28px;
}

.page-about .team__card {
  padding: 22px 20px;
  background: var(--ink);
  border: 1px solid var(--ink-2);
  border-top: 2px solid var(--cyan);
}

.page-about .team__card--tech {
  border-top-color: var(--blue);
}

.page-about .team__card--care {
  border-top-color: var(--amber);
}

.page-about .team__num {
  display: block;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 40px;
  line-height: 1;
  color: var(--cyan);
}

.page-about .team__card--tech .team__num {
  color: var(--blue);
}

.page-about .team__card--care .team__num {
  color: var(--amber);
}

.page-about .team__title {
  color: var(--body-text);
}

.page-about .team__text {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: #A9B8D0;
}

@media (min-width: 880px) {
  .page-about .team {
    flex-direction: row;
    gap: 8px;
  }

  .page-about .team__card {
    flex-basis: 0;
  }

  .page-about .team__card--edit {
    flex-grow: 12;
  }

  .page-about .team__card--tech {
    flex-grow: 18;
  }

  .page-about .team__card--care {
    flex-grow: 10;
  }
}

/* 三段流程 */
.page-about .flow {
  display: grid;
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

@media (min-width: 800px) {
  .page-about .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-about .flow__step {
  padding: 24px 20px;
  background: var(--ink);
}

.page-about .flow__n {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .flow__step p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-about .ov-note {
  margin: 26px 0 0;
  padding-left: 16px;
  max-width: 68ch;
  border-left: 2px solid var(--cyan);
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
}

.page-about .ov-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 设计原则 */
.page-about .ov-split {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

@media (min-width: 900px) {
  .page-about .ov-split {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 40px;
    align-items: start;
  }
}

.page-about .ov-split__figure {
  margin: 0;
}

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

.page-about .rules li {
  position: relative;
  padding-left: 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--body-text);
}

.page-about .rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

/* 访问方式 */
.page-about .access {
  margin: 28px 0 0;
  padding: 0;
}

.page-about .access > div {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-about .access > div:first-child {
  border-top: 1px solid var(--line);
}

@media (min-width: 700px) {
  .page-about .access > div {
    grid-template-columns: 150px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
  }
}

.page-about .access dt {
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-about .access dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--body-text);
}

/* 下一步 */
.page-about .ov-links {
  display: grid;
  gap: 8px;
  margin-top: 28px;
}

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

.page-about .ov-links a {
  display: block;
  padding: 18px 20px;
  background: var(--ink);
  border: 1px solid var(--line);
  border-left: 2px solid var(--cyan);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.4;
  color: var(--body-text);
  text-decoration: none;
  transition: border-color var(--t-fast) ease, background var(--t-fast) ease;
}

.page-about .ov-links a:hover,
.page-about .ov-links a:focus-visible {
  border-color: var(--cyan);
  background: var(--ink-2);
}

.page-about .ov-links a span {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .page-about .ov-links a,
  .page-about .tl__item::before {
    transition: none;
  }
}
<<<END>>>