.page-about {
  --about-line: rgba(143, 184, 171, 0.24);
  --about-line-strong: rgba(143, 184, 171, 0.44);
  --about-surface: rgba(15, 58, 49, 0.58);
  --about-deep: rgba(8, 37, 31, 0.86);
  padding-bottom: clamp(48px, 8vw, 96px);
  color: var(--mist);
  overflow-x: hidden;
}

.page-about .about-flow > * + * {
  margin-top: clamp(52px, 9vw, 108px);
}

.page-about .section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 6vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--mist);
  margin: 8px 0 12px;
}

.page-about .eyebrow--onwine {
  color: var(--amber);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  display: grid;
  gap: 22px;
  align-items: start;
}

.page-about .about-hero__gauge {
  display: flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  max-width: 100%;
  padding: 8px 14px;
  border: 1px solid var(--about-line);
  border-radius: var(--radius-pill);
  background: var(--about-deep);
  overflow-x: auto;
  overflow-y: hidden;
}

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

.page-about .about-hero__gauge-key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.2em;
  color: var(--amber);
  white-space: nowrap;
}

.page-about .about-hero__ticks {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sage);
  white-space: nowrap;
}

.page-about .about-hero__ticks li {
  padding: 3px 7px;
  border-radius: var(--radius-pill);
  transition: color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .about-hero__ticks li.is-live {
  background: var(--cyan);
  color: var(--ink);
  font-weight: 700;
}

.page-about .about-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(32px, 9vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 10px 0 16px;
  color: var(--mist);
  text-wrap: balance;
  overflow-wrap: break-word;
}

.page-about .about-hero .lede {
  max-width: 62ch;
  margin: 0;
  font-size: clamp(15px, 2.4vw, 17px);
  line-height: 1.78;
  color: rgba(234, 246, 241, 0.86);
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--about-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 14px 16px;
  background: linear-gradient(170deg, rgba(18, 63, 54, 0.94), rgba(7, 17, 15, 0.94));
}

.page-about .about-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 5vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--cyan);
}

.page-about .about-stats__num em {
  font-style: normal;
  font-size: 0.62em;
  margin-left: 2px;
  color: rgba(57, 242, 208, 0.78);
}

.page-about .about-stats__label {
  font-size: 12.5px;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: var(--sage);
}

/* ---------- 章节标题 ---------- */
.page-about .about-sec-head {
  max-width: 70ch;
  margin-bottom: clamp(22px, 4vw, 34px);
}

.page-about .about-sec-head__lede {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--sage);
}

/* ---------- 起点与定位 ---------- */
.page-about .about-origin__grid {
  display: grid;
  gap: 26px;
}

.page-about .about-origin__copy p {
  margin: 0 0 14px;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(234, 246, 241, 0.8);
}

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

.page-about .about-origin__points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-origin__points li {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--about-surface);
  box-shadow: inset 2px 0 0 rgba(57, 242, 208, 0.5);
  transition: box-shadow 0.22s var(--ease), background-color 0.22s var(--ease);
}

.page-about .about-origin__points li:hover {
  background: rgba(18, 63, 54, 0.75);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-about .about-origin__k {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--amber);
  line-height: 1.4;
}

.page-about .about-origin__points h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .about-origin__points p {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(234, 246, 241, 0.76);
}

/* ---------- 时间线 ---------- */
.page-about .timeline {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 20px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 58px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--about-line-strong), rgba(143, 184, 171, 0.04));
}

.page-about .timeline__item:last-child::before {
  display: none;
}

.page-about .timeline__tag {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 16px;
  border: 1px solid var(--about-line-strong);
  background: var(--about-deep);
  font-family: var(--font-mono);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-about .timeline__item:last-child .timeline__tag {
  border-color: var(--amber);
  background: var(--amber);
  color: var(--ink);
}

.page-about .timeline__card {
  padding: 16px 18px 18px;
  border-radius: var(--radius-md);
  background: var(--about-surface);
  box-shadow: inset 0 0 0 1px rgba(143, 184, 171, 0.12);
}

.page-about .timeline__card h3 {
  margin: 0 0 6px;
  font-size: 16.5px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .timeline__card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(234, 246, 241, 0.78);
}

.page-about .about-figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--panel);
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
}

.page-about .about-figure figcaption {
  padding: 10px 16px 14px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sage);
  background: rgba(7, 17, 15, 0.62);
}

.page-about .about-archive {
  margin-top: clamp(26px, 4vw, 40px);
}

/* ---------- 团队 ---------- */
.page-about .about-team {
  background: linear-gradient(180deg, var(--forest), rgba(7, 17, 15, 0.35));
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  padding-block: clamp(34px, 6vw, 72px);
}

.page-about .about-team__figure {
  margin-bottom: 4px;
}

.page-about .about-track {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-track__node {
  position: relative;
  padding: 20px 18px 22px;
  border-radius: var(--radius-md);
  background: linear-gradient(165deg, rgba(18, 63, 54, 0.95), rgba(8, 37, 31, 0.92));
  border: 1px solid var(--about-line);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-about .about-track__node:hover,
.page-about .about-track__node:focus-within {
  transform: translateY(-4px);
  border-color: rgba(57, 242, 208, 0.5);
}

.page-about .about-track__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 10px;
}

.page-about .about-track__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 6vw, 38px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-about .about-track__role {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-about .about-track__desc {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(234, 246, 241, 0.78);
}

.page-about .about-track__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 7px;
}

.page-about .about-track__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13px;
  line-height: 1.68;
  color: var(--sage);
}

.page-about .about-track__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255, 157, 69, 0.85);
}

/* ---------- 内容生产 ---------- */
.page-about .about-process__panel {
  background: linear-gradient(155deg, #4A1730 0%, #2C0E1E 62%, #180A12 100%);
  border: 1px solid rgba(255, 157, 69, 0.22);
  border-radius: clamp(22px, 4vw, 36px);
  padding: clamp(22px, 5vw, 52px);
}

.page-about .about-process__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-process__copy p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(255, 234, 240, 0.82);
}

.page-about .about-quote {
  margin: 22px 0 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--amber);
  font-family: var(--font-display);
  font-size: clamp(20px, 3.6vw, 26px);
  font-weight: 700;
  line-height: 1.38;
  color: #FFE0C4;
}

.page-about .process {
  list-style: none;
  margin: clamp(24px, 4vw, 36px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .process__item {
  position: relative;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: rgba(7, 17, 15, 0.42);
  border: 1px solid rgba(255, 157, 69, 0.18);
}

.page-about .process__step {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-about .process__item h3 {
  margin: 0 0 6px;
  font-size: 15.5px;
  font-weight: 700;
  color: var(--mist);
}

.page-about .process__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: rgba(234, 246, 241, 0.76);
}

/* ---------- 合作 ---------- */
.page-about .about-partners__grid {
  display: grid;
  gap: 24px;
}

.page-about .about-partners__grid > div > p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(234, 246, 241, 0.8);
}

.page-about .about-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-partners__list li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 16px 18px;
  border-radius: var(--radius-md);
  background: var(--about-surface);
  border: 1px solid var(--about-line);
}

.page-about .about-partners__list .num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
}

.page-about .about-partners__text {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--sage);
}

.page-about .about-partners__note {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--sage);
}

.page-about .about-partners__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 242, 208, 0.42);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-about .about-partners__note a:hover,
.page-about .about-partners__note a:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--cyan);
}

.page-about .about-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(24px, 4vw, 34px);
}

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

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

  .page-about .about-track::before {
    content: "";
    position: absolute;
    top: 42px;
    left: 6%;
    right: 6%;
    height: 1px;
    background: linear-gradient(90deg, rgba(57, 242, 208, 0.1), rgba(57, 242, 208, 0.7), rgba(255, 157, 69, 0.7), rgba(255, 157, 69, 0.1));
    opacity: 0.55;
  }

  .page-about .timeline__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 18px;
    padding-bottom: 24px;
  }

  .page-about .timeline__item::before {
    left: 31px;
    top: 66px;
  }

  .page-about .timeline__tag {
    width: 62px;
    height: 62px;
    font-size: 15px;
  }

  .page-about .timeline__card {
    padding: 18px 22px 20px;
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-about .about-hero__gauge {
    flex-direction: column;
    align-items: center;
    gap: 16px;
    width: 100%;
    padding: 18px 8px 22px;
    border-radius: var(--radius-lg);
    align-self: stretch;
    position: relative;
    overflow: visible;
  }

  .page-about .about-hero__gauge::after {
    content: "";
    position: absolute;
    left: 50%;
    top: 150px;
    bottom: 20px;
    width: 1px;
    background: linear-gradient(180deg, rgba(57, 242, 208, 0.6), rgba(57, 242, 208, 0));
  }

  .page-about .about-hero__gauge-key {
    writing-mode: vertical-rl;
    letter-spacing: 0.32em;
  }

  .page-about .about-hero__ticks {
    flex-direction: column;
    gap: 14px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: clamp(32px, 5vw, 62px);
    align-items: start;
  }

  .page-about .about-process__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }

  .page-about .process {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
  }

  .page-about .process__item + .process__item::before {
    content: "";
    position: absolute;
    left: -12px;
    top: 26px;
    width: 8px;
    height: 8px;
    border-top: 2px solid var(--amber);
    border-right: 2px solid var(--amber);
    transform: rotate(45deg);
    opacity: 0.85;
  }

  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(28px, 5vw, 60px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-track__node,
  .page-about .about-origin__points li,
  .page-about .about-partners__note a {
    transition: none;
  }

  .page-about .about-track__node:hover,
  .page-about .about-track__node:focus-within {
    transform: none;
  }
}