.page-about {
  --about-rule: rgba(22, 35, 43, 0.16);
  --about-rule-light: rgba(243, 237, 224, 0.18);
  --about-tick: rgba(192, 139, 62, 0.62);
  --about-tide-wash: rgba(87, 175, 174, 0.08);
  --about-paper-wash: rgba(223, 211, 188, 0.4);
  display: block;
  background-color: var(--paper);
  color: var(--text-ink);
  overflow-x: clip;
}

/* ---------- 页首坐标与面包屑 ---------- */
.page-about .about-masthead {
  background-color: var(--ink);
  border-bottom: 1px solid var(--about-rule-light);
  padding-block: 1.3rem 1.5rem;
}

.page-about .about-masthead .coordinate-line {
  margin: 0 0 0.6rem;
}

.page-about .about-masthead .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: rgba(243, 237, 224, 0.6);
}

.page-about .about-masthead .breadcrumb__list li:not(:last-child)::after {
  content: "/";
  margin-left: 0.45rem;
  color: var(--brass);
}

.page-about .about-masthead .breadcrumb__list a {
  color: var(--tide);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-about .about-masthead .breadcrumb__list a:hover,
.page-about .about-masthead .breadcrumb__list a:focus-visible {
  color: var(--coral);
  border-bottom-color: currentColor;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  background-color: var(--ink);
  color: var(--paper);
  padding-block: clamp(1.8rem, 4vw, 2.8rem) clamp(2.4rem, 5.5vw, 4.2rem);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  inset: auto -12% -38% 38%;
  height: 62%;
  background: radial-gradient(circle at 32% 30%, rgba(87, 175, 174, 0.16), transparent 64%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4.5vw, 3.2rem);
}

.page-about .about-hero__kicker {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  color: var(--brass);
}

.page-about .about-hero h1 {
  margin: 0 0 1.15rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-about .about-hero__visual {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.page-about .about-hero__visual .frame {
  border: 1px solid var(--about-rule-light);
  background-color: var(--harbor);
}

.page-about .about-hero__visual .frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) contrast(1.05);
}

.page-about .about-hero__gauge {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--brass);
}

.page-about .about-hero__ticks {
  flex: 1 1 auto;
  height: 9px;
  background-image: repeating-linear-gradient(
    to right,
    var(--about-tick) 0 1px,
    transparent 1px 11px
  );
}

.page-about .about-hero__note {
  position: relative;
  z-index: 1;
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: 1.35rem;
  border-top: 1px solid var(--about-rule-light);
}

.page-about .about-hero__note p {
  margin: 0;
  max-width: 66ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(243, 237, 224, 0.78);
}

/* ---------- 五段航程 ---------- */
.page-about .about-voyage {
  padding-block: clamp(3rem, 8vw, 6rem);
  background-color: var(--paper);
  background-image: linear-gradient(to bottom, var(--about-paper-wash), transparent 200px);
}

.page-about .voyage {
  display: flex;
  flex-direction: column;
  margin-top: clamp(1.8rem, 4vw, 2.8rem);
}

.page-about .voyage__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  padding: 1.55rem 0.7rem 1.65rem;
  border-top: 1px solid var(--about-rule);
  background-color: transparent;
  transition: background-color 240ms ease;
}

.page-about .voyage__item:last-child {
  border-bottom: 1px solid var(--about-rule);
}

.page-about .voyage__item:hover {
  background-color: var(--about-tide-wash);
}

.page-about .voyage__stamp {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--about-tick);
}

.page-about .voyage__no {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--graphite);
}

.page-about .voyage__year {
  font-family: var(--font-mono);
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  line-height: 1;
  letter-spacing: 0.03em;
  color: var(--ochre);
}

.page-about .voyage__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.12rem, 2.5vw, 1.55rem);
  line-height: 1.35;
  color: var(--text-ink);
  transition: color 200ms ease;
}

.page-about .voyage__item:hover .voyage__title {
  color: var(--ochre);
}

.page-about .voyage__text {
  margin: 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--graphite);
}

/* ---------- 做内容的人 ---------- */
.page-about .about-crew {
  padding-block: clamp(3rem, 8vw, 6rem);
  border-top: 1px solid var(--about-rule);
  background-color: var(--paper);
}

.page-about .about-crew__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 5vw, 3.2rem);
}

.page-about .crew-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  margin: 1.9rem 0 0;
  padding: 0;
  background-color: var(--paper-shade);
  border: 1px solid var(--paper-shade);
}

.page-about .crew-stats__item {
  background-color: var(--paper);
  padding: 1.05rem 1rem 1.15rem;
}

.page-about .crew-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.45rem, 3.4vw, 1.95rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--ochre);
}

.page-about .crew-stats__label {
  display: block;
  margin-top: 0.45rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--text-ink);
}

.page-about .crew-stats__desc {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--graphite);
}

.page-about .crew-flow {
  margin-top: 1.9rem;
  padding-top: 1.4rem;
  border-top: 1px dashed var(--paper-shade);
}

.page-about .crew-flow__title {
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.28rem);
  line-height: 1.4;
  color: var(--text-ink);
}

.page-about .crew-flow__text {
  margin: 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .about-crew__figure {
  align-self: start;
}

.page-about .about-crew__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--paper-shade);
  filter: saturate(0.8);
}

.page-about .about-crew__figure .frame__cap {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.05em;
  color: var(--graphite);
}

/* ---------- 每季初三件套 ---------- */
.page-about .about-season {
  padding-block: clamp(3rem, 8vw, 6rem);
  background-color: var(--ink);
  color: var(--paper);
}

.page-about .about-season .section-head__index {
  color: var(--coral);
}

.page-about .about-season .section-head__title {
  color: var(--paper);
}

.page-about .about-season .section-head__note {
  color: rgba(243, 237, 224, 0.66);
}

.page-about .season-intro {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 4vw, 2.6rem);
  margin-top: clamp(1.6rem, 3.5vw, 2.4rem);
}

.page-about .season-intro .lede {
  margin: 0;
  max-width: 60ch;
}

.page-about .season-intro__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--about-rule-light);
  filter: saturate(0.7) contrast(1.05);
}

.page-about .season-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  list-style: none;
  margin: clamp(2rem, 4.5vw, 2.8rem) 0 0;
  padding: 0;
  background-color: var(--about-rule-light);
  border: 1px solid var(--about-rule-light);
  border-radius: 2px;
  overflow: hidden;
}

.page-about .season-list__item {
  background-color: rgba(16, 44, 61, 0.82);
  backdrop-filter: blur(6px);
  padding: 1.4rem 1.25rem 1.5rem;
  transition: transform 240ms ease, background-color 240ms ease;
}

.page-about .season-list__item:hover {
  transform: translateY(-3px);
  background-color: rgba(16, 44, 61, 0.98);
}

.page-about .season-list__tag {
  display: inline-block;
  margin-bottom: 0.7rem;
}

.page-about .season-list__title {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  line-height: 1.35;
  color: var(--paper);
}

.page-about .season-list__text {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.78;
  color: rgba(243, 237, 224, 0.78);
}

.page-about .tiers-block {
  margin-top: clamp(2.2rem, 5vw, 3.2rem);
  padding-top: 1.6rem;
  border-top: 1px solid var(--about-rule-light);
}

.page-about .tiers-block__title {
  margin: 0 0 1.2rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.1rem, 2.4vw, 1.4rem);
  color: var(--paper);
}

.page-about .tiers {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.85rem;
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: tier;
}

.page-about .tiers__item {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  grid-template-areas:
    "no name"
    "no text";
  column-gap: 0.9rem;
  row-gap: 0.2rem;
  padding: 1rem 1rem 1.05rem;
  border-left: 2px solid var(--tide-deep);
  background-color: rgba(87, 175, 174, 0.07);
  transition: border-color 220ms ease, background-color 220ms ease;
}

.page-about .tiers__item:hover {
  border-left-color: var(--coral);
  background-color: rgba(228, 113, 75, 0.12);
}

.page-about .tiers__no {
  grid-area: no;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--brass);
  padding-top: 0.2rem;
}

.page-about .tiers__name {
  grid-area: name;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--paper);
}

.page-about .tiers__text {
  grid-area: text;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: rgba(243, 237, 224, 0.74);
}

/* ---------- 运行数字 ---------- */
.page-about .about-record {
  padding-block: clamp(3rem, 8vw, 6rem);
  background-color: var(--paper);
}

.page-about .record-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  margin: clamp(1.8rem, 4vw, 2.6rem) 0 0;
  padding: 0;
  background-color: var(--paper-shade);
  border: 1px solid var(--paper-shade);
}

.page-about .record-grid__item {
  background-color: var(--ink);
  padding: 1.4rem 1rem 1.5rem;
  transition: background-color 240ms ease;
}

.page-about .record-grid__item:hover {
  background-color: var(--harbor);
}

.page-about .record-grid__num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4.4vw, 2.5rem);
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--paper);
}

.page-about .record-grid__unit {
  margin-left: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--brass);
}

.page-about .record-grid__label {
  display: block;
  margin-top: 0.55rem;
  font-size: 0.86rem;
  letter-spacing: 0.05em;
  color: rgba(243, 237, 224, 0.72);
}

.page-about .record-notes {
  margin-top: 1.6rem;
  padding-left: 1rem;
  border-left: 2px solid var(--coral);
}

.page-about .record-notes p {
  margin: 0 0 0.65rem;
  max-width: 68ch;
  font-size: 0.96rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .record-notes p:last-child {
  margin-bottom: 0;
}

/* ---------- 伙伴 ---------- */
.page-about .about-partners {
  padding-block: clamp(3rem, 8vw, 5.5rem);
  background-color: var(--paper);
  border-top: 1px solid var(--about-rule);
}

.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.8rem, 4vw, 3rem);
}

.page-about .about-partners__text {
  margin: 1rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--graphite);
}

.page-about .partner-tags {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  list-style: none;
  margin: 0;
  padding: 0;
  background-color: var(--paper-shade);
  border: 1px solid var(--paper-shade);
  align-self: start;
}

.page-about .partner-tags__item {
  background-color: var(--paper);
  padding: 1.1rem 0.85rem 1.2rem;
  text-align: center;
}

.page-about .partner-tags__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3.2vw, 1.85rem);
  line-height: 1;
  color: var(--tide-deep);
}

.page-about .partner-tags__name {
  display: block;
  margin-top: 0.45rem;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--graphite);
}

/* ---------- 下一页入口 ---------- */
.page-about .about-next {
  padding-block: clamp(2.6rem, 6vw, 4.2rem);
  background-color: var(--ink);
  color: var(--paper);
}

.page-about .about-next__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  line-height: 1.3;
  color: var(--paper);
}

.page-about .about-next__text {
  margin: 0;
  max-width: 64ch;
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(243, 237, 224, 0.78);
}

.page-about .about-next__links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-about .crew-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-about .record-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 780px) {
  .page-about .voyage {
    margin-left: clamp(0px, 3.5vw, 4.5rem);
  }

  .page-about .voyage__item {
    grid-template-columns: 8.5rem minmax(0, 1fr);
    column-gap: 2.4rem;
    padding: 2rem 0.85rem 2.1rem;
  }

  .page-about .voyage__stamp {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.3rem;
  }

  .page-about .tiers {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    background-color: var(--about-rule-light);
    border: 1px solid var(--about-rule-light);
  }

  .page-about .tiers__item {
    border-left-width: 0;
    border-top: 2px solid transparent;
    background-color: rgba(201, 218, 214, 0.06);
  }

  .page-about .tiers__item:hover {
    border-top-color: var(--coral);
  }
}

@media (min-width: 920px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
  }

  .page-about .season-intro {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: center;
  }

  .page-about .about-crew__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }
}

@media (min-width: 1080px) {
  .page-about .tiers {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .voyage__item,
  .page-about .season-list__item,
  .page-about .tiers__item,
  .page-about .record-grid__item {
    transition: none;
  }

  .page-about .season-list__item:hover {
    transform: none;
  }
}
<<<END>>>