/* ==========================================================================
   page-about · 品牌历程
   ========================================================================== */

.page-about {
  --about-line-dark: rgba(111, 168, 191, .18);
  --about-line-ink: rgba(23, 64, 92, .16);
  --about-radius: 3px;
  --about-shadow: 0 16px 36px -28px rgba(11, 26, 43, .6);
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  padding-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--slate);
}
.page-about .crumbs a {
  color: var(--snow);
  text-decoration: none;
}
.page-about .crumbs a:hover {
  text-decoration: underline;
}
.page-about .crumbs [aria-current="page"] {
  color: var(--snow-deep);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  overflow: hidden;
  padding: 34px 0 64px;
  background: var(--night);
  color: var(--paper);
}
.page-about .about-hero::before {
  content: "";
  position: absolute;
  top: -16%;
  right: -34%;
  width: 104%;
  height: 132%;
  background: linear-gradient(155deg, rgba(47, 110, 140, .5) 0%, rgba(23, 64, 92, .24) 46%, rgba(11, 26, 43, 0) 80%);
  clip-path: polygon(34% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}
.page-about .about-hero__edge {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--snow) 0%, rgba(47, 110, 140, .16) 46%, rgba(47, 110, 140, 0) 100%);
  pointer-events: none;
}
.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 34px;
}
.page-about .about-hero .h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--paper);
}
.page-about .about-hero .lede {
  max-width: 34em;
  margin: 0 0 28px;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(242, 234, 223, .82);
}
.page-about .about-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.page-about .about-hero__panel {
  position: relative;
  padding: 22px 20px;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--about-radius);
  background: rgba(16, 38, 58, .72);
  box-shadow: var(--about-shadow);
}
.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 14px;
}
.page-about .about-stat__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--paper);
}
.page-about .about-stat__unit {
  font-size: 16px;
  color: var(--snow-light);
}
.page-about .about-stat__label {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--snow-light);
}
.page-about .about-hero__note {
  position: relative;
  margin: 24px 0 0;
  padding-left: 18px;
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(111, 168, 191, .92);
}
.page-about .about-hero__note::before {
  content: "";
  position: absolute;
  left: 0;
  top: 3px;
  bottom: 3px;
  width: 1px;
  background: var(--snow);
}

/* ---------- 章节通用 ---------- */
.page-about .about-chapter {
  position: relative;
}
.page-about .section-band {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num title"
    "num note";
  align-items: baseline;
  column-gap: 18px;
  row-gap: 4px;
  margin-bottom: 40px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--about-line-ink);
}
.page-about .section-band__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 34px;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--snow);
}
.page-about .section-band__title {
  grid-area: title;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.01em;
  line-height: 1.25;
}
.page-about .section-band__note {
  grid-area: note;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--slate);
}

.page-about .about-intro {
  max-width: 40rem;
  margin: -12px 0 32px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--snow-deep);
}
.page-about .about-prose p {
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--snow-deep);
}
.page-about .about-prose p:last-child {
  margin-bottom: 0;
}
.page-about .about-coda {
  max-width: 40rem;
  margin: 36px 0 0;
  padding-left: 18px;
  border-left: 1px solid var(--snow);
  font-size: 15px;
  line-height: 1.85;
  color: var(--snow);
}

/* ---------- 01 / 03 双栏 ---------- */
.page-about .about-split {
  display: grid;
  gap: 30px;
}
.page-about .about-split__media {
  margin: 0;
}

/* ---------- 02 时间线 ---------- */
.page-about .about-hint {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--snow-deep);
  opacity: .7;
}
.page-about .about-timeline {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 78%;
  gap: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scroll-snap-type: x mandatory;
  padding-bottom: 14px;
}
.page-about .about-stage {
  scroll-snap-align: start;
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--about-line-ink);
  border-top: 2px solid var(--snow);
  border-radius: var(--about-radius);
  background: var(--paper-2);
  transition: box-shadow 220ms var(--ease), border-color 220ms var(--ease);
}
.page-about .about-stage:hover {
  border-color: rgba(47, 110, 140, .4);
  box-shadow: var(--about-shadow);
}
.page-about .about-stage__year {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--snow);
}
.page-about .about-stage .h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.35;
  color: var(--night);
}
.page-about .about-stage p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--snow-deep);
}

/* ---------- 03 团队 ---------- */
.page-about .about-teams {
  display: grid;
  gap: 18px;
  margin-bottom: 52px;
}
.page-about .about-team .card__title {
  font-family: var(--font-display);
  font-weight: 900;
}
.page-about .about-split--flow {
  align-items: start;
}
.page-about .about-flow-title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.4;
  color: var(--night);
}
.page-about .about-flow {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-about .about-flow__step {
  display: grid;
  grid-template-columns: 34px 1fr;
  grid-template-areas:
    "num name"
    "num desc";
  align-items: baseline;
  column-gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--about-line-ink);
}
.page-about .about-flow__step:first-child {
  border-top: 1px solid var(--about-line-ink);
}
.page-about .about-flow__num {
  grid-area: num;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--snow);
}
.page-about .about-flow__name {
  grid-area: name;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15.5px;
  color: var(--night);
}
.page-about .about-flow__desc {
  grid-area: desc;
  margin-top: 4px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 04 档案（深底） ---------- */
.page-about .about-chapter--dark {
  background: var(--cabin);
  color: var(--paper);
}
.page-about .about-chapter--dark .section-band {
  border-bottom-color: var(--about-line-dark);
}
.page-about .about-chapter--dark .section-band__num {
  color: var(--neon);
}
.page-about .about-chapter--dark .section-band__note {
  color: var(--snow-light);
}
.page-about .about-chapter--dark .section-band__title {
  color: var(--paper);
}
.page-about .about-intro--dark {
  color: rgba(242, 234, 223, .78);
}
.page-about .about-ledger {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--about-line-dark);
}
.page-about .about-ledger__row {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-areas:
    "num label"
    "num desc";
  align-items: baseline;
  column-gap: 20px;
  padding: 20px 0;
  border-bottom: 1px solid var(--about-line-dark);
}
.page-about .about-ledger__num {
  grid-area: num;
  min-width: 92px;
  font-family: var(--font-mono);
  font-size: 32px;
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--snow-light);
}
.page-about .about-ledger__unit {
  font-size: 18px;
  color: var(--snow);
}
.page-about .about-ledger__label {
  grid-area: label;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  color: var(--paper);
}
.page-about .about-ledger__desc {
  grid-area: desc;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(111, 168, 191, .9);
}
.page-about .about-chapter--dark .about-coda {
  color: var(--sand);
  border-left-color: var(--snow);
}

/* ---------- 05 更新节奏 ---------- */
.page-about .about-chapter--night {
  background: var(--night);
  color: var(--paper);
  padding-top: 0;
}
.page-about .about-rhythm__figure {
  position: relative;
  height: 210px;
  overflow: hidden;
}
.page-about .about-rhythm__figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-about .about-rhythm__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 26, 43, .3) 0%, rgba(11, 26, 43, .82) 60%, var(--night) 100%);
}
.page-about .about-rhythm {
  padding-top: 44px;
}
.page-about .about-chapter--night .section-band {
  border-bottom-color: var(--about-line-dark);
}
.page-about .about-chapter--night .section-band__num {
  color: var(--neon);
}
.page-about .about-chapter--night .section-band__note {
  color: var(--snow-light);
}
.page-about .about-chapter--night .section-band__title {
  color: var(--paper);
}
.page-about .about-rhythm__grid {
  display: grid;
  gap: 32px;
}
.page-about .about-prose--dark p {
  color: rgba(242, 234, 223, .8);
}
.page-about .about-rhythm__side {
  padding: 22px 20px;
  border: 1px solid var(--about-line-dark);
  border-radius: var(--about-radius);
  background: rgba(16, 38, 58, .66);
}
.page-about .about-rhythm__k {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--snow-light);
}
.page-about .about-rhythm__list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-about .about-rhythm__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--about-line-dark);
}
.page-about .about-rhythm__t {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--paper);
}
.page-about .about-rhythm__d {
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(111, 168, 191, .92);
}
.page-about .about-rhythm__foot {
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(111, 168, 191, .72);
}

/* ---------- 06 合作 ---------- */
.page-about .about-partners {
  display: grid;
  gap: 14px;
}
.page-about .about-partner {
  border: 1px solid var(--about-line-ink);
  border-radius: var(--about-radius);
  background: var(--paper-2);
  overflow: hidden;
}
.page-about .about-partner summary {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}
.page-about .about-partner summary::-webkit-details-marker {
  display: none;
}
.page-about .about-partner summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--snow);
}
.page-about .about-partner[open] summary::after {
  content: "\2212";
}
.page-about .about-partner__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  color: var(--night);
}
.page-about .about-partner__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--snow);
}
.page-about .about-partner__body {
  padding: 0 20px 20px;
  border-top: 1px solid var(--about-line-ink);
}
.page-about .about-partner__body p {
  margin: 16px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--snow-deep);
}

/* ---------- 07 路线图 ---------- */
.page-about .about-roadmap {
  display: grid;
  gap: 18px;
}
.page-about .about-road {
  position: relative;
  padding: 26px 22px 28px;
  border: 1px solid rgba(23, 64, 92, .22);
  border-radius: var(--about-radius);
  background: rgba(242, 234, 223, .5);
}
.page-about .about-road::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 2px;
  background: var(--snow);
}
.page-about .about-road__tag {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--snow);
}
.page-about .about-road__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--night);
}
.page-about .about-road p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--snow-deep);
}

/* ---------- 收口入口 ---------- */
.page-about .about-next {
  border-top: 1px solid var(--about-line-ink);
}
.page-about .about-next .h2 {
  margin: 0 0 30px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -.01em;
}
.page-about .about-next__links {
  display: grid;
  gap: 2px;
}
.page-about .about-link {
  display: grid;
  grid-template-columns: 34px 1fr;
  grid-template-areas:
    "k t"
    "k d";
  align-items: baseline;
  column-gap: 16px;
  padding: 18px 6px;
  border-bottom: 1px solid var(--about-line-ink);
  text-decoration: none;
  transition: background-color 200ms var(--ease), padding-left 200ms var(--ease);
}
.page-about .about-link:first-child {
  border-top: 1px solid var(--about-line-ink);
}
.page-about .about-link:hover {
  background: rgba(216, 198, 166, .3);
  padding-left: 14px;
}
.page-about .about-link__k {
  grid-area: k;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--snow);
}
.page-about .about-link__t {
  grid-area: t;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  color: var(--night);
}
.page-about .about-link__d {
  grid-area: d;
  margin-top: 5px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 媒体 ---------- */
.page-about .media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   断点
   ========================================================================== */

@media (min-width: 640px) {
  .page-about .about-timeline {
    grid-auto-columns: 46%;
  }
  .page-about .about-teams,
  .page-about .about-roadmap,
  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 34px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 52px 0 108px;
  }
  .page-about .about-hero::before {
    right: -12%;
    width: 62%;
  }
  .page-about .about-hero__inner {
    grid-template-columns: 7fr 5fr;
    gap: 56px;
    align-items: start;
  }
  .page-about .about-hero__panel {
    transform: translateY(48px);
  }

  .page-about .section-band {
    margin-bottom: 52px;
  }

  .page-about .about-split {
    grid-template-columns: 1.12fr .88fr;
    gap: 56px;
    align-items: start;
  }
  .page-about .about-split--flow {
    grid-template-columns: .9fr 1.1fr;
    gap: 52px;
  }

  .page-about .about-timeline {
    grid-auto-flow: row;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    overflow: visible;
    scroll-snap-type: none;
    padding-bottom: 0;
  }
  .page-about .about-hint {
    display: none;
  }

  .page-about .about-teams {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    margin-bottom: 64px;
  }

  .page-about .about-ledger__row {
    grid-template-columns: 130px 200px 1fr;
    grid-template-areas: "num label desc";
    align-items: center;
    column-gap: 24px;
    padding: 24px 0;
  }
  .page-about .about-ledger__desc {
    margin-top: 0;
  }

  .page-about .about-rhythm__figure {
    height: 300px;
  }
  .page-about .about-rhythm {
    padding-top: 60px;
  }
  .page-about .about-rhythm__grid {
    grid-template-columns: 1.25fr .75fr;
    gap: 56px;
    align-items: start;
  }

  .page-about .about-partners {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-roadmap {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }
  .page-about .about-road {
    padding: 32px 28px 34px;
  }

  .page-about .about-next__links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-stage,
  .page-about .about-link {
    transition: none;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>
</output>