.page-about {
  --about-dot: 14px;
  --about-rail-w: 2px;
  --about-node-gap: 32px;
  background: var(--ink-900);
  color: var(--text-soft);
  overflow-x: clip;
}

.page-about .container {
  max-width: var(--maxw);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 24px 0 48px;
  isolation: isolate;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: -20% -30% auto -30%;
  height: 88%;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(60% 55% at 18% 0%, rgba(53, 240, 208, 0.18), transparent 72%),
    linear-gradient(118deg, rgba(122, 92, 255, 0.16), transparent 58%);
  clip-path: polygon(0 0, 100% 0, 100% 66%, 0 100%);
}

.page-about .about-hero__grid {
  display: grid;
  gap: 30px;
  margin-top: 22px;
}

.page-about .about-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 16em;
}

.page-about .about-hero__intro {
  margin: 20px 0 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-about .about-hero__panel {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: 22px 20px;
  background: linear-gradient(158deg, var(--ink-800), rgba(7, 28, 24, 0.85));
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.32);
}

.page-about .about-panel__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

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

.page-about .about-panel__list li {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(30, 63, 56, 0.9);
}

.page-about .about-panel__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .about-panel__num {
  flex: 0 0 auto;
  min-width: 2.6ch;
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

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

.page-about .about-panel__unit {
  font-size: 13px;
  color: var(--slate);
  margin-left: 2px;
}

.page-about .about-panel__text {
  font-size: 14px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  position: relative;
  padding: 46px 0;
}

.page-about .about-section--tint {
  background: linear-gradient(
    180deg,
    transparent,
    rgba(12, 42, 36, 0.72) 18%,
    rgba(12, 42, 36, 0.72) 82%,
    transparent
  );
}

.page-about .about-head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 22px;
}

.page-about .about-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--violet);
  opacity: 0.85;
  font-variant-numeric: tabular-nums;
}

.page-about .about-title {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-lede {
  margin: 0 0 26px;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-about .about-text {
  margin: 24px 0 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 01 起点 ---------- */
.page-about .about-prose-grid {
  display: grid;
  gap: 26px;
}

.page-about .about-prose p {
  margin: 0 0 16px;
  font-size: 16px;
  line-height: 1.82;
  color: var(--text-soft);
}

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

.page-about .about-points {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-points li {
  border-left: 2px solid var(--cyan);
  padding: 2px 0 2px 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .about-points strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15px;
  color: var(--paper);
  letter-spacing: 0.01em;
}

/* ---------- 图片块 ---------- */
.page-about .about-figure {
  margin: 0 0 30px;
}

.page-about .about-media {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

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

.page-about .about-figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 02 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: var(--about-rail-w);
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan), rgba(53, 240, 208, 0.12));
}

.page-about .about-node {
  position: relative;
  margin-left: var(--about-node-gap);
  margin-bottom: 16px;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-800);
  transition:
    border-color var(--t) var(--ease),
    background-color var(--t) var(--ease),
    transform var(--t) var(--ease);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  left: -31px;
  top: 22px;
  width: var(--about-dot);
  height: var(--about-dot);
  box-sizing: border-box;
  border-radius: 50%;
  background: var(--ink-900);
  border: 2px solid var(--cyan);
}

.page-about .about-node:hover,
.page-about .about-node:focus-within {
  border-color: rgba(53, 240, 208, 0.55);
  background: var(--ink-700);
  transform: translateX(4px);
}

.page-about .about-node__season {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-about .about-node__title {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.4;
  color: var(--paper);
  letter-spacing: -0.01em;
}

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

/* ---------- 03 团队 ---------- */
.page-about .about-flowmap {
  margin: 0 0 22px;
}

.page-about .about-flowmap svg {
  display: block;
  width: 100%;
  height: auto;
  overflow: visible;
}

.page-about .about-flowmap path {
  fill: none;
  stroke-width: 2.5;
  stroke-linecap: round;
}

.page-about .about-flowmap circle {
  stroke: none;
}

.page-about .about-flowmap .fm-edit {
  stroke: var(--cyan);
}

.page-about .about-flowmap .fm-data {
  stroke: var(--amber);
}

.page-about .about-flowmap .fm-eng {
  stroke: var(--violet);
}

.page-about .about-flowmap .fm-merge {
  stroke: var(--mist);
  opacity: 0.5;
}

.page-about .about-flowmap circle.fm-edit {
  fill: var(--cyan);
}

.page-about .about-flowmap circle.fm-data {
  fill: var(--amber);
}

.page-about .about-flowmap circle.fm-eng {
  fill: var(--violet);
}

.page-about .about-flowmap circle.fm-merge {
  fill: var(--mist);
}

.page-about .about-roles {
  display: grid;
  gap: 14px;
}

.page-about .about-role {
  --role-accent: var(--cyan);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 20px 18px;
  background: rgba(12, 42, 36, 0.78);
  transition:
    border-color var(--t) var(--ease),
    transform var(--t) var(--ease),
    background-color var(--t) var(--ease);
}

.page-about .about-role--data {
  --role-accent: var(--amber);
}

.page-about .about-role--eng {
  --role-accent: var(--violet);
}

.page-about .about-role:hover,
.page-about .about-role:focus-within {
  border-color: var(--role-accent);
  background: rgba(14, 49, 42, 0.95);
  transform: translateY(-2px);
}

.page-about .about-role__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--role-accent);
  font-variant-numeric: tabular-nums;
}

.page-about .about-role__title {
  margin: 10px 0 8px;
  font-size: 17px;
  color: var(--paper);
}

.page-about .about-role__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 04 流程 ---------- */
.page-about .about-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-step {
  position: relative;
  padding: 18px 18px 18px 56px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(140deg, rgba(12, 42, 36, 0.95), rgba(7, 28, 24, 0.6));
  transition: border-color var(--t) var(--ease);
}

.page-about .about-step:hover,
.page-about .about-step:focus-within {
  border-color: rgba(53, 240, 208, 0.5);
}

.page-about .about-step__idx {
  position: absolute;
  left: 18px;
  top: 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-about .about-step__title {
  margin: 0 0 8px;
  font-size: 16px;
  color: var(--paper);
}

.page-about .about-step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 05 覆盖 ---------- */
.page-about .about-bands {
  display: grid;
  gap: 12px;
}

.page-about .about-band {
  display: grid;
  gap: 16px;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(100deg, rgba(12, 42, 36, 0.92), rgba(7, 28, 24, 0.35));
}

.page-about .about-band--partner {
  background: linear-gradient(100deg, rgba(122, 92, 255, 0.14), rgba(7, 28, 24, 0.4));
  border-color: rgba(122, 92, 255, 0.32);
}

.page-about .about-band__row {
  display: grid;
  gap: 4px;
}

.page-about .about-band__num {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: 700;
  line-height: 1.05;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

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

.page-about .about-band__num em {
  font-style: normal;
  font-size: 13px;
  font-weight: 400;
  margin-left: 5px;
  color: var(--slate);
}

.page-about .about-band__label {
  font-size: 13px;
  line-height: 1.6;
  color: var(--slate);
}

/* ---------- 06 资质 ---------- */
.page-about .about-honors {
  display: grid;
  gap: 14px;
}

.page-about .about-honor {
  border: 1px solid rgba(122, 92, 255, 0.34);
  border-radius: var(--r-md);
  padding: 22px 20px;
  background: linear-gradient(150deg, rgba(122, 92, 255, 0.16), rgba(7, 28, 24, 0.6));
}

.page-about .about-honor__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 36px;
  line-height: 1;
  color: var(--mist);
  font-variant-numeric: tabular-nums;
}

.page-about .about-honor__title {
  margin: 12px 0 8px;
  font-size: 17px;
  line-height: 1.45;
  color: var(--paper);
}

.page-about .about-honor__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 07 继续了解 ---------- */
.page-about .about-next {
  display: grid;
  gap: 14px;
}

.page-about .about-next__card {
  display: grid;
  gap: 8px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--ink-800);
  color: inherit;
  text-decoration: none;
  transition:
    border-color var(--t) var(--ease),
    transform var(--t) var(--ease),
    background-color var(--t) var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  border-color: rgba(53, 240, 208, 0.6);
  background: var(--ink-700);
  transform: translateY(-2px);
}

.page-about .about-next__kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-about .about-next__title {
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-about .about-next__text {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-about .about-next__go {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--amber);
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-about .about-hero {
    padding: 32px 0 72px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.78fr);
    gap: 44px;
    align-items: start;
  }

  .page-about .about-hero__panel {
    margin-top: 44px;
    padding: 26px 24px;
  }

  .page-about .about-section {
    padding: 68px 0;
  }

  .page-about .about-num {
    font-size: 40px;
  }

  .page-about .about-title {
    font-size: 28px;
  }

  .page-about .about-prose-grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 36px;
  }

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

  .page-about .about-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
  }

  .page-about .about-band {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    padding: 24px 22px;
  }

  .page-about .about-honors {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
  }

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

  .page-about .about-media img {
    max-height: 420px;
  }
}

@media (min-width: 1080px) {
  .page-about .about-hero h1 {
    font-size: 58px;
  }

  .page-about .about-section {
    padding: 84px 0;
  }

  .page-about .about-num {
    font-size: 52px;
    padding-top: 4px;
  }

  .page-about .about-title {
    font-size: 34px;
  }

  .page-about .about-head {
    gap: 24px;
    margin-bottom: 30px;
  }

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

  .page-about .about-node:nth-child(odd) {
    width: 96%;
  }

  .page-about .about-node:nth-child(even) {
    width: 82%;
  }

  .page-about .about-node {
    padding: 22px 24px 24px;
  }

  .page-about .about-band__num {
    font-size: 38px;
  }

  .page-about .about-flowmap {
    margin-bottom: 26px;
  }

  .page-about .about-media img {
    max-height: 460px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-node,
  .page-about .about-role,
  .page-about .about-step,
  .page-about .about-next__card {
    transition: none;
  }

  .page-about .about-node:hover,
  .page-about .about-node:focus-within,
  .page-about .about-role:hover,
  .page-about .about-role:focus-within,
  .page-about .about-next__card:hover,
  .page-about .about-next__card:focus-visible {
    transform: none;
  }
}
<<<END>>>