.page-about {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-sans);
  overflow-x: hidden;
}

.page-about h2 {
  margin: 12px 0 0;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.16;
  font-weight: 900;
  letter-spacing: -0.02em;
}

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

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(20px, 4vw, 36px) 0 clamp(28px, 5vw, 52px);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

.page-about .about-hero__kicker {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--mid);
}

.page-about .about-hero__kicker::before {
  content: "";
  display: inline-block;
  width: 26px;
  height: 2px;
  margin-right: 10px;
  vertical-align: middle;
  background: var(--red);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(46px, 12vw, 92px);
  line-height: 0.94;
  font-weight: 900;
  letter-spacing: -0.03em;
  transform: skewX(-4deg);
  transform-origin: left bottom;
}

.page-about .about-hero__lede {
  margin: 22px 0 0;
  max-width: 34em;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.78;
  color: var(--ink-2);
}

.page-about .about-hero__lede strong {
  font-weight: 800;
  box-shadow: inset 0 -0.42em 0 rgba(245, 179, 1, 0.42);
}

.page-about .about-hero__guide {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--red);
  max-width: 34em;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mid);
}

.page-about .about-hero__guide a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-about .about-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-jump a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 13px;
  color: var(--ink-2);
  text-decoration: none;
  transition: border-color var(--ease), color var(--ease), transform var(--ease);
}

.page-about .about-jump a:hover {
  border-color: var(--red);
  color: var(--red);
  transform: translateY(-2px);
}

.page-about .about-jump a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-about .about-board {
  position: relative;
  padding: 24px 20px 16px;
  background: var(--ink);
  color: var(--paper);
  border-radius: var(--radius);
  box-shadow: 8px 8px 0 rgba(226, 58, 46, 0.16);
  transform: rotate(-1.5deg);
}

.page-about .about-board::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 56px;
  height: 4px;
  background: var(--red);
}

.page-about .about-board dl {
  margin: 0;
}

.page-about .about-board__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(218, 213, 206, 0.28);
}

.page-about .about-board__row:last-child {
  border-bottom: 0;
}

.page-about .about-board dt {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--fog);
}

.page-about .about-board dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
}

/* ---------- 起点 ---------- */
.page-about .about-origin {
  padding: clamp(36px, 6vw, 64px) 0 clamp(24px, 4vw, 40px);
}

.page-about .about-origin__body {
  max-width: 40em;
}

.page-about .about-origin__body p {
  margin: 16px 0 0;
  font-size: 17px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-about .about-quote {
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 4px 0 4px 20px;
  max-width: 30em;
  border-left: 4px solid var(--gold);
  font-family: var(--font-serif);
  font-size: clamp(18px, 2.4vw, 24px);
  line-height: 1.62;
  color: var(--ink);
}

/* ---------- 正文与侧栏 ---------- */
.page-about .about-work {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4vw, 48px);
  padding-bottom: clamp(36px, 6vw, 64px);
}

.page-about .about-block + .about-block {
  margin-top: clamp(34px, 5vw, 56px);
}

.page-about .about-block__text {
  margin: 18px 0 0;
  max-width: 38em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-about .about-figure {
  margin: 22px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: var(--radius);
  object-fit: cover;
  background: var(--ink-2);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  padding-left: 10px;
  border-left: 2px solid var(--gold);
  font-size: 13px;
  line-height: 1.65;
  color: var(--mid);
}

.page-about .about-ratio {
  margin: 24px 0 0;
  max-width: 34em;
}

.page-about .about-ratio__bar {
  display: flex;
  height: 14px;
  border-radius: 2px;
  overflow: hidden;
  background: var(--line);
}

.page-about .about-ratio__seg--edit {
  flex: 24;
  background: var(--ink);
}

.page-about .about-ratio__seg--check {
  flex: 6;
  background: var(--red);
}

.page-about .about-ratio__legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mid);
}

.page-about .about-ratio__legend li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-about .about-ratio__dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--ink);
}

.page-about .about-ratio__dot--red {
  background: var(--red);
}

.page-about .about-steps {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  counter-reset: about-step;
}

.page-about .about-steps__item {
  position: relative;
  counter-increment: about-step;
  padding: 16px 0 16px 50px;
  border-top: 1px dashed var(--line);
}

.page-about .about-steps__item:last-child {
  border-bottom: 1px dashed var(--line);
}

.page-about .about-steps__item::before {
  content: "0" counter(about-step);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--red);
}

.page-about .about-steps__item h3 {
  margin: 0 0 6px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
}

.page-about .about-steps__item p {
  margin: 0;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-2);
}

/* 版本侧栏 */
.page-about .about-rail {
  padding: 24px 20px;
  background: var(--ink-2);
  color: var(--paper);
  border-radius: var(--radius);
}

.page-about .about-rail__title {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .about-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 20px;
  list-style: none;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(245, 179, 1, 0.12));
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 22px 2px;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--ink-2);
  border: 2px solid var(--gold);
  transition: background var(--ease), transform var(--ease);
}

.page-about .about-timeline__item:hover::before {
  background: var(--gold);
  transform: scale(1.2);
}

.page-about .about-timeline__item:last-child::before {
  background: var(--red);
  border-color: var(--red);
}

.page-about .about-timeline__year {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-about .about-timeline__item h3 {
  margin: 5px 0 6px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--paper);
}

.page-about .about-timeline__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--fog);
}

.page-about .about-rail__note {
  margin: 6px 0 0;
  padding-top: 16px;
  border-top: 1px solid rgba(245, 179, 1, 0.28);
  font-size: 13px;
  line-height: 1.72;
  color: var(--fog);
}

.page-about .about-rail__cta {
  margin-top: 18px;
  border-color: rgba(247, 245, 242, 0.4);
  color: var(--paper);
}

.page-about .about-rail__cta:hover {
  border-color: var(--gold);
  color: var(--gold);
}

/* ---------- 数据带 ---------- */
.page-about .about-band {
  padding: clamp(26px, 4.5vw, 42px) 0;
  border-top: 3px solid var(--red);
  border-bottom: 3px solid var(--red);
}

.page-about .about-band__list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-band__list li {
  padding-left: 12px;
  border-left: 1px solid rgba(245, 179, 1, 0.4);
}

.page-about .about-band__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-about .about-band__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--fog);
}

/* ---------- 数据来源 ---------- */
.page-about .about-sources {
  padding: clamp(36px, 6vw, 64px) 0;
}

.page-about .about-sources__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 42px);
  align-items: start;
}

.page-about .about-sources__body p {
  margin: 16px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-about .about-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

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

.page-about .about-sources__card {
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 4px solid var(--gold);
  border-radius: var(--radius);
  transition: border-color var(--ease), transform var(--ease);
}

.page-about .about-sources__card:hover {
  border-color: var(--red);
  border-left-color: var(--red);
  transform: translateX(2px);
}

.page-about .about-sources__card h3 {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.page-about .about-sources__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mid);
}

/* ---------- 联系 ---------- */
.page-about .about-contact {
  padding: clamp(30px, 5vw, 56px) 0 clamp(44px, 7vw, 76px);
}

.page-about .about-contact__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 30px);
  align-items: stretch;
}

.page-about .about-contact__card {
  padding: clamp(22px, 3vw, 34px);
  border-radius: var(--radius);
}

.page-about .about-contact__card h2 {
  font-size: clamp(22px, 3vw, 30px);
  color: var(--paper);
}

.page-about .about-contact__list {
  margin: 20px 0 0;
  display: grid;
  gap: 14px;
}

.page-about .about-contact__list > div {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(218, 213, 206, 0.25);
}

.page-about .about-contact__list > div:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-about .about-contact__list dt {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--fog);
}

.page-about .about-contact__list dd {
  margin: 0;
  font-size: 16px;
  line-height: 1.65;
  color: var(--paper);
  word-break: break-word;
}

.page-about .about-contact__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--fog);
}

.page-about .about-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-about .about-contact__actions .btn--ghost {
  border-color: rgba(247, 245, 242, 0.4);
  color: var(--paper);
}

.page-about .about-contact__actions .btn--ghost:hover {
  border-color: var(--gold);
  color: var(--gold);
}

.page-about .about-contact__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--ink-2);
}

.page-about .about-contact__media img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 240px;
  max-width: 100%;
  object-fit: cover;
}

.page-about .about-contact__media figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 16px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  background: linear-gradient(180deg, rgba(18, 16, 15, 0) 0%, rgba(18, 16, 15, 0.88) 70%);
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

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

  .page-about .about-contact__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .page-about .about-band__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-about .about-work {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 88px;
  }

  .page-about .about-board {
    margin-top: 8px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-band__list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

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