.page-about {
  --about-rail: rgba(242,239,230,.16);
  --about-card: rgba(7,27,22,.55);
  background: var(--ink-green);
  color: var(--paper);
  font-family: var(--font-body);
  line-height: 1.7;
  overflow-x: hidden;
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-display);
  font-weight: 900;
  margin: 0;
  letter-spacing: -.005em;
}

.page-about p {
  margin: 0;
}

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

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  position: relative;
  padding: var(--space-4) 0 var(--space-6);
  background:
    radial-gradient(130% 82% at 50% -12%, rgba(22,58,90,.88), transparent 62%),
    linear-gradient(180deg, var(--moss) 0%, var(--ink-green) 74%);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(118deg, rgba(242,239,230,.05) 0 1px, transparent 1px 44px);
  pointer-events: none;
}

.page-about .about-hero .shell {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs {
  margin-bottom: var(--space-4);
}

.page-about .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: .78rem;
  letter-spacing: .04em;
}

.page-about .breadcrumbs li,
.page-about .breadcrumbs a,
.page-about .breadcrumbs span {
  color: var(--silver);
}

.page-about .breadcrumbs a {
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-about .breadcrumbs a:hover,
.page-about .breadcrumbs a:focus-visible {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

.page-about .about-hero__mast {
  display: grid;
  justify-items: center;
  gap: var(--space-3);
  max-width: 880px;
  margin: 0 auto;
  text-align: center;
}

.page-about .about-hero__kicker {
  font-size: .74rem;
  letter-spacing: .22em;
  color: var(--orange);
  margin: 0;
}

.page-about .about-hero h1 {
  font-size: clamp(2rem, 7.4vw, 4.1rem);
  line-height: 1.05;
  text-wrap: balance;
}

.page-about .about-hero__lead {
  max-width: 62ch;
  font-size: clamp(.95rem, 2.3vw, 1.06rem);
  line-height: 1.85;
  color: rgba(242,239,230,.82);
}

.page-about .about-hero__split {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.page-about .about-hero__media {
  margin: 0;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .about-hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-hero__side {
  display: grid;
  gap: var(--space-3);
  align-content: start;
}

.page-about .about-figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-about .about-figure {
  display: grid;
  gap: 4px;
  padding: var(--space-2) var(--space-3);
  background: var(--about-card);
}

.page-about .about-figure__value {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4.6vw, 2rem);
  line-height: 1;
  color: var(--paper);
}

.page-about .about-figure:first-child .about-figure__value {
  color: var(--orange);
}

.page-about .about-figure__label {
  font-size: .76rem;
  letter-spacing: .04em;
  color: var(--silver);
}

.page-about .about-scale {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3) var(--space-3);
  border: 1px solid var(--line);
  background: rgba(11,39,66,.55);
}

.page-about .about-scale__head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--silver);
}

.page-about .about-scale__bar {
  display: grid;
  grid-template-columns: repeat(18, minmax(0, 1fr));
  gap: 3px;
  align-items: end;
  height: 42px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
}

.page-about .about-scale__tick {
  display: block;
  height: 26%;
  background: var(--tundra);
}

.page-about .about-scale__tick:nth-child(3n) {
  height: 54%;
  background: rgba(242,193,78,.72);
}

.page-about .about-scale__tick:last-child {
  height: 100%;
  background: var(--orange);
}

.page-about .about-scale__note {
  font-size: .76rem;
  color: var(--silver);
}

/* ---------- 通用区块骨架 ---------- */

.page-about .about-section {
  position: relative;
  padding: var(--space-6) 0;
}

.page-about .about-head {
  display: grid;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  max-width: 68ch;
}

.page-about .about-head__kicker {
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--orange);
  margin: 0;
}

.page-about .about-head__title {
  font-size: clamp(1.55rem, 4.8vw, 2.5rem);
  line-height: 1.14;
}

.page-about .about-head__text {
  font-size: .95rem;
  line-height: 1.8;
  color: rgba(242,239,230,.78);
}

/* ---------- 品牌起点 ---------- */

.page-about .about-origin {
  background: linear-gradient(180deg, var(--ink-green) 0%, var(--moss) 100%);
}

.page-about .about-origin__grid {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-origin__text p {
  max-width: 60ch;
  margin-bottom: var(--space-3);
  font-size: .97rem;
  line-height: 1.9;
  color: rgba(242,239,230,.84);
}

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

.page-about .about-origin__quote {
  border-left: 3px solid var(--orange);
  padding: var(--space-3);
  background: rgba(22,58,90,.42);
}

.page-about .about-origin__quote p {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 3vw, 1.32rem);
  line-height: 1.55;
  color: var(--paper);
}

.page-about .about-origin__quotemark {
  display: block;
  margin-top: var(--space-2);
  font-size: .72rem;
  letter-spacing: .14em;
  color: var(--silver);
}

/* ---------- 服务对象 ---------- */

.page-about .about-audience {
  background: var(--night-blue);
}

.page-about .about-audience__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-2);
}

.page-about .about-audience__item {
  display: grid;
  gap: var(--space-1);
  padding: var(--space-3);
  background: rgba(7,27,22,.5);
  border: 1px solid var(--line);
  border-top: 2px solid var(--tundra);
  transition: border-color .25s ease, background .25s ease;
}

.page-about .about-audience__item:hover {
  border-top-color: var(--orange);
  background: rgba(12,42,34,.8);
}

.page-about .about-audience__item h3 {
  font-size: 1.05rem;
  line-height: 1.35;
}

.page-about .about-audience__item p {
  font-size: .87rem;
  line-height: 1.75;
  color: rgba(242,239,230,.76);
}

/* ---------- 栏目与赛前准备 ---------- */

.page-about .about-flow {
  background: var(--ink-green);
}

.page-about .about-flow__grid {
  display: grid;
  gap: var(--space-4);
}

.page-about .about-flow__steps {
  display: grid;
}

.page-about .about-step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-top: 1px solid var(--line);
}

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

.page-about .about-step__index {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  font-size: .92rem;
  color: var(--orange);
  border: 1px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 74%, 74% 100%, 0 100%);
}

.page-about .about-step__body h3 {
  font-size: 1.12rem;
  line-height: 1.35;
  margin-bottom: 6px;
}

.page-about .about-step__body p {
  font-size: .9rem;
  line-height: 1.8;
  color: rgba(242,239,230,.8);
}

.page-about .about-topics {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: var(--space-2) 0 0;
  padding: 0;
}

.page-about .about-topic {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .04em;
  padding: 4px 10px;
  color: var(--silver);
  border: 1px solid var(--line-strong);
}

.page-about .about-flow__media {
  margin: 0;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 30px), calc(100% - 30px) 100%, 0 100%);
}

.page-about .about-flow__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 时间线（浅色区） ---------- */

.page-about .about-timeline-section {
  background-color: var(--paper);
  background-image: repeating-linear-gradient(115deg, transparent 0 24px, rgba(7,27,22,.035) 24px 25px);
  color: var(--ink-green);
}

.page-about .about-timeline-section .about-head__title {
  color: var(--ink-green);
}

.page-about .about-timeline-section .about-head__kicker {
  color: var(--orange);
}

.page-about .about-timeline-section .about-head__text {
  color: var(--stone);
}

.page-about .about-timeline__media {
  margin: 0 0 var(--space-4);
  aspect-ratio: 12 / 5;
  overflow: hidden;
  border: 1px solid var(--ink-line);
}

.page-about .about-timeline__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .about-timeline-section .chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: var(--space-4);
}

.page-about .about-timeline-section .chip {
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .04em;
  padding: 7px 14px;
  border: 1px solid rgba(7,27,22,.24);
  background: transparent;
  color: var(--ink-green);
  cursor: pointer;
  transition: background .2s ease, color .2s ease, border-color .2s ease;
}

.page-about .about-timeline-section .chip:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.page-about .about-timeline-section .chip[aria-pressed="true"] {
  background: var(--card-yellow);
  border-color: var(--card-yellow);
  color: var(--ink-green);
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 26px;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, var(--card-yellow) 45%, var(--tundra) 100%);
}

.page-about .about-milestone {
  position: relative;
  padding: 0 0 var(--space-4);
}

.page-about .about-milestone:last-child {
  padding-bottom: 0;
}

.page-about .about-milestone__dot {
  position: absolute;
  left: -26px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--ink-green);
  border: 3px solid var(--orange);
  box-sizing: border-box;
}

.page-about .about-milestone:nth-child(3n) .about-milestone__dot {
  border-color: var(--card-yellow);
}

.page-about .about-milestone:nth-child(3n+2) .about-milestone__dot {
  border-color: var(--card-red);
}

.page-about .about-milestone__phase {
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--stone);
  margin-bottom: 4px;
}

.page-about .about-milestone__body h3 {
  font-size: 1.1rem;
  line-height: 1.35;
  margin-bottom: 6px;
  color: var(--ink-green);
}

.page-about .about-milestone__body p {
  font-size: .89rem;
  line-height: 1.78;
  color: var(--stone);
  max-width: 62ch;
}

/* ---------- 团队 ---------- */

.page-about .about-team {
  background: var(--rock-blue);
}

.page-about .about-team__grid {
  display: grid;
  gap: var(--space-3);
}

.page-about .about-team__panel {
  padding: var(--space-4) var(--space-3);
  background: var(--about-card);
  border: 1px solid var(--line);
  border-left: 2px solid transparent;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
  transition: background .25s ease, border-left-color .25s ease;
}

.page-about .about-team__panel:hover,
.page-about .about-team__panel:focus-within {
  background: rgba(7,27,22,.8);
  border-left-color: var(--orange);
}

.page-about .about-team__index {
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--card-yellow);
  margin-bottom: var(--space-1);
}

.page-about .about-team__panel h3 {
  font-size: 1.15rem;
  line-height: 1.3;
  margin-bottom: var(--space-2);
}

.page-about .about-team__panel > p:not(.about-team__index):not(.about-team__detail) {
  font-size: .89rem;
  line-height: 1.8;
  color: rgba(242,239,230,.82);
}

.page-about .about-team__detail {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px dashed var(--line-strong);
  font-size: .82rem;
  line-height: 1.75;
  color: var(--silver);
}

/* ---------- 服务承诺 ---------- */

.page-about .about-promise {
  background: linear-gradient(180deg, var(--ink-green) 0%, var(--moss) 100%);
}

.page-about .about-promise__grid {
  display: grid;
  gap: var(--space-3);
}

.page-about .about-promise__item {
  padding: var(--space-3) 0 var(--space-3) var(--space-3);
  border-left: 2px solid var(--orange);
  background: linear-gradient(90deg, rgba(228,98,46,.1), transparent 70%);
}

.page-about .about-promise__item h3 {
  font-size: 1.05rem;
  line-height: 1.35;
  margin-bottom: 6px;
}

.page-about .about-promise__item p {
  font-size: .88rem;
  line-height: 1.78;
  color: rgba(242,239,230,.8);
}

.page-about .about-promise__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-about .about-audience__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-hero__split {
    grid-template-columns: 1.06fr .94fr;
    gap: var(--space-4);
    align-items: stretch;
  }

  .page-about .about-hero__media {
    aspect-ratio: auto;
    height: 100%;
    min-height: 320px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 1.25fr .75fr;
    gap: var(--space-5);
    align-items: start;
  }

  .page-about .about-flow__grid {
    grid-template-columns: 1.1fr .9fr;
    gap: var(--space-5);
    align-items: start;
  }

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

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

  .page-about .about-timeline {
    padding-left: 40px;
  }

  .page-about .about-timeline::before {
    left: 9px;
  }

  .page-about .about-milestone__dot {
    left: -40px;
    top: 8px;
    width: 20px;
    height: 20px;
  }

  .page-about .about-milestone__body h3 {
    font-size: 1.2rem;
  }
}

@media (min-width: 1000px) {
  .page-about .about-audience__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>