.page-about {
  --abt-rail-w: 210px;
  --abt-gap: clamp(24px, 4vw, 56px);
  --abt-band: var(--jade);
  background: var(--ivory);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
  -webkit-text-size-adjust: 100%;
}

.page-about .mj-wrap {
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--edge);
}

/* ---------- 首屏 ---------- */
.page-about .abt-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 34px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 80% at 88% 6%, rgba(20, 200, 164, 0.18), transparent 62%),
    linear-gradient(180deg, var(--paper) 0%, var(--ivory) 100%);
  border-bottom: 1px solid var(--line-soft);
}

.page-about .abt-hero::after {
  content: "";
  position: absolute;
  right: -70px;
  top: -90px;
  width: 280px;
  height: 380px;
  border-radius: 26px;
  border: 1px solid var(--line);
  background:
    repeating-linear-gradient(135deg, rgba(14, 122, 95, 0.1) 0 2px, transparent 2px 12px),
    var(--paper);
  transform: rotate(7deg);
  opacity: 0.55;
  pointer-events: none;
}

.page-about .abt-hero > .mj-wrap {
  position: relative;
  z-index: 1;
}

.page-about .abt-hero .mj-crumbs {
  margin-bottom: clamp(16px, 3vw, 26px);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-about .abt-hero .mj-eyebrow {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--jade);
  margin: 0 0 12px;
}

.page-about .abt-h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 5.4vw, 56px);
  line-height: 1.14;
  letter-spacing: -0.022em;
  margin: 0 0 clamp(14px, 2vw, 20px);
  max-width: 21ch;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .abt-lede {
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: var(--ink);
  opacity: 0.82;
  max-width: 58ch;
  margin: 0;
}

.page-about .abt-figures {
  list-style: none;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
}

.page-about .abt-figures li {
  background: var(--paper);
  padding: 14px 16px;
}

.page-about .abt-figures b {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--jade);
}

.page-about .abt-figures span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--mist);
  letter-spacing: 0.02em;
}

/* ---------- 主体骨架 ---------- */
.page-about .abt-body {
  padding: clamp(30px, 5vw, 62px) 0 clamp(48px, 7vw, 88px);
}

.page-about .abt-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
}

.page-about .abt-rail__inner {
  border-bottom: 1px solid var(--line-soft);
  padding-bottom: 12px;
}

.page-about .abt-rail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
  margin: 0 0 10px;
}

.page-about .abt-rail ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-about .abt-rail ol::-webkit-scrollbar {
  display: none;
}

.page-about .abt-rail a {
  display: block;
  white-space: nowrap;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  font-size: 12.5px;
  line-height: 1.4;
}

.page-about .abt-rail a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 章节 ---------- */
.page-about .abt-chapter {
  position: relative;
  padding-top: clamp(20px, 3vw, 30px);
  margin-bottom: clamp(40px, 6vw, 72px);
  scroll-margin-top: 96px;
}

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

.page-about .abt-chapter::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(56px, 10vw, 88px);
  height: 8px;
  border-radius: 4px;
  background: var(--abt-band, var(--jade));
}

.page-about .abt-c1 { --abt-band: var(--jade); }
.page-about .abt-c2 { --abt-band: var(--cyan); }
.page-about .abt-c3 { --abt-band: var(--violet); }
.page-about .abt-c4 { --abt-band: var(--gold); }
.page-about .abt-c5 { --abt-band: var(--cinnabar); }
.page-about .abt-c6 { --abt-band: var(--deep); }

.page-about .abt-chapter__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  margin: 16px 0 clamp(16px, 2.4vw, 24px);
}

.page-about .abt-chapter__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--abt-band, var(--jade));
  opacity: 0.62;
}

.page-about .abt-h2 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 3vw, 31px);
  line-height: 1.26;
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
  text-wrap: balance;
}

.page-about .abt-text {
  font-size: clamp(15px, 1.5vw, 16.5px);
  line-height: 1.82;
  color: var(--ink);
  margin: 0 0 14px;
  max-width: 64ch;
}

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

.page-about .abt-text a {
  color: var(--jade);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-about .abt-text a:hover {
  color: var(--violet);
}

.page-about .abt-text .mj-mono {
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

/* ---------- 团队 ---------- */
.page-about .abt-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(18px, 3vw, 30px);
  align-items: start;
  margin-top: clamp(8px, 1.6vw, 14px);
}

.page-about .abt-team {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .abt-team li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px 16px;
  transition: border-color 0.22s ease, transform 0.22s ease, box-shadow 0.22s ease;
}

.page-about .abt-team li:hover,
.page-about .abt-team li:focus-within {
  border-color: rgba(201, 162, 39, 0.75);
  transform: translateY(-2px);
  box-shadow: var(--shadow-tile);
}

.page-about .abt-team__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.page-about .abt-team__name {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.01em;
}

.page-about .abt-team__count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--jade);
}

.page-about .abt-team__bar {
  margin: 10px 0 9px;
  height: 6px;
  border-radius: 3px;
  background: var(--line-soft);
  overflow: hidden;
}

.page-about .abt-team__bar i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--jade), var(--cyan));
}

.page-about .abt-team li:nth-child(1) .abt-team__bar i { width: 33.3%; }
.page-about .abt-team li:nth-child(2) .abt-team__bar i { width: 22.2%; }
.page-about .abt-team li:nth-child(3) .abt-team__bar i { width: 27.8%; }
.page-about .abt-team li:nth-child(4) .abt-team__bar i { width: 16.7%; }

.page-about .abt-team__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 图片 ---------- */
.page-about .abt-figure {
  margin: clamp(18px, 3vw, 28px) 0 0;
  max-width: 100%;
}

.page-about .abt-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.page-about .abt-figure figcaption {
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
}

/* ---------- 三审流程 ---------- */
.page-about .abt-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-about .abt-step {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 4px 20px 4px 20px;
  padding: 20px 18px;
}

.page-about .abt-step__seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--gold);
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
  margin-bottom: 12px;
}

.page-about .abt-step__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  letter-spacing: 0.01em;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .abt-step__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 深色停顿 ---------- */
.page-about .abt-pause {
  position: relative;
  overflow: hidden;
  margin: clamp(8px, 2vw, 20px) 0 clamp(36px, 5vw, 60px);
  padding: clamp(28px, 5vw, 52px) clamp(20px, 4vw, 44px);
  border-radius: 20px;
  color: var(--paper);
  background:
    radial-gradient(90% 140% at 10% 0%, rgba(20, 200, 164, 0.22), transparent 62%),
    var(--deep);
}

.page-about .abt-pause::after {
  content: "";
  position: absolute;
  right: -44px;
  bottom: -64px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(201, 162, 39, 0.45);
  border-radius: 22px;
  transform: rotate(12deg);
  pointer-events: none;
}

.page-about .abt-pause__quote {
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.36;
  letter-spacing: -0.01em;
  margin: 0 0 12px;
  max-width: 22ch;
  color: var(--paper);
}

.page-about .abt-pause__note {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 13.5px;
  line-height: 1.82;
  color: rgba(247, 242, 230, 0.74);
  max-width: 48ch;
}

/* ---------- 版本轨迹 ---------- */
.page-about .abt-tl {
  list-style: none;
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  padding: 0;
}

.page-about .abt-tl__item {
  position: relative;
  padding: 0 0 22px 26px;
}

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

.page-about .abt-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 7px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--paper);
  border: 2px solid var(--deep);
  box-sizing: border-box;
}

.page-about .abt-tl__item::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 24px;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-about .abt-tl__item:last-child::after {
  display: none;
}

.page-about .abt-tl__ver {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--deep);
  background: rgba(20, 200, 164, 0.14);
  border: 1px solid rgba(20, 200, 164, 0.42);
  border-radius: 6px;
  padding: 2px 8px;
  margin-bottom: 8px;
}

.page-about .abt-tl__item .abt-text {
  margin-bottom: 0;
}

/* ---------- 四条原则 ---------- */
.page-about .abt-principles {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .abt-principle {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 3px solid var(--jade);
  border-radius: 0 12px 12px 0;
  padding: 16px 18px;
}

.page-about .abt-principles > li:nth-child(2) { border-left-color: var(--cyan); }
.page-about .abt-principles > li:nth-child(3) { border-left-color: var(--violet); }
.page-about .abt-principles > li:nth-child(4) { border-left-color: var(--gold); }

.page-about .abt-principle__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 15.5px;
  letter-spacing: 0.01em;
  margin: 0 0 8px;
  color: var(--ink);
}

.page-about .abt-principle .abt-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

/* ---------- 动作区 ---------- */
.page-about .abt-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(20px, 3vw, 28px);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 720px) {
  .page-about .abt-figures {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .abt-chapter__head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0 18px;
    align-items: start;
  }

  .page-about .abt-chapter__num {
    font-size: clamp(30px, 4vw, 44px);
    line-height: 0.92;
  }
}

@media (min-width: 820px) {
  .page-about .abt-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
  }

  .page-about .abt-step + .abt-step {
    margin-left: 28px;
  }

  .page-about .abt-step + .abt-step::before {
    content: "";
    position: absolute;
    left: -21px;
    top: 34px;
    width: 14px;
    height: 2px;
    background: var(--gold);
  }

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

@media (min-width: 860px) {
  .page-about .abt-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.72fr);
  }
}

@media (min-width: 960px) {
  .page-about .abt-shell {
    grid-template-columns: var(--abt-rail-w) minmax(0, 1fr);
    gap: var(--abt-gap);
    align-items: start;
  }

  .page-about .abt-rail__inner {
    position: sticky;
    top: 92px;
    border-bottom: 0;
    padding-bottom: 0;
  }

  .page-about .abt-rail ol {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-about .abt-rail a {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0 8px 8px 0;
    background: transparent;
    padding: 9px 10px 9px 14px;
    white-space: normal;
    line-height: 1.45;
    color: var(--mist);
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  }

  .page-about .abt-rail a:hover,
  .page-about .abt-rail a:focus-visible {
    color: var(--jade);
    border-left-color: var(--jade);
    background: rgba(14, 122, 95, 0.06);
    outline: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .abt-team li {
    transition: none;
  }

  .page-about .abt-team li:hover {
    transform: none;
  }
}
<<<END>>>