.page-about {
  --about-aside: 200px;
}

.page-about .about-crumbs {
  padding: 18px 0 0;
}

/* ---------- 封面 ---------- */
.page-about .about-cover {
  position: relative;
  margin-top: 14px;
  padding: 48px 0 0;
  overflow: hidden;
  color: #EAF4F3;
  background:
    radial-gradient(115% 90% at 88% 6%, rgba(24, 199, 183, .22), transparent 62%),
    radial-gradient(90% 80% at 0% 100%, rgba(107, 90, 224, .24), transparent 64%),
    var(--cover);
  border-radius: 0;
}

.page-about .about-cover::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, .045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 46px 46px;
}

.page-about .about-cover__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  align-items: center;
}

.page-about .about-eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: .14em;
  color: #9FE8DE;
}

.page-about .about-title {
  margin: 14px 0 0;
  font-size: clamp(34px, 6vw, 56px);
  line-height: 1.12;
  letter-spacing: -.02em;
  font-weight: 800;
  color: #FFFFFF;
}

.page-about .about-lead {
  margin: 18px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.85;
  color: rgba(234, 244, 243, .84);
}

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

.page-about .about-btn-ghost {
  color: #EAF4F3;
  border: 1px solid rgba(255, 255, 255, .32);
  background: rgba(255, 255, 255, .04);
}

.page-about .about-btn-ghost:hover,
.page-about .about-btn-ghost:focus-visible {
  border-color: var(--volt);
  color: #FFFFFF;
  background: rgba(24, 199, 183, .12);
}

.page-about .about-cover__visual {
  min-width: 0;
}

.page-about .about-device {
  display: block;
  width: 100%;
  height: auto;
  max-width: 540px;
  margin: 0 auto;
}

.page-about .about-cover__index {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, .16);
}

.page-about .cover-idx {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 15px 10px;
  font-size: 14px;
  color: rgba(234, 244, 243, .78);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 255, 255, .09);
  border-left: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .cover-idx .mono {
  font-size: 11px;
  color: var(--volt);
  letter-spacing: .06em;
}

.page-about .cover-idx:hover,
.page-about .cover-idx:focus-visible {
  color: #FFFFFF;
  border-left-color: var(--orange);
  background: rgba(255, 255, 255, .05);
}

/* ---------- 两栏主体 ---------- */
.page-about .about-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  padding-top: 44px;
  padding-bottom: 72px;
}

.page-about .about-index {
  align-self: start;
  min-width: 0;
}

.page-about .about-index__title {
  display: none;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--ink-2);
}

.page-about .about-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 2px 0 10px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index__list li {
  flex: none;
}

.page-about .about-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 8px 13px;
  white-space: nowrap;
  font-size: 13px;
  color: var(--ink-2);
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-about .about-index__link .mono {
  font-size: 11px;
  color: var(--teal);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--ink);
  border-color: var(--volt);
}

.page-about .about-body {
  min-width: 0;
}

/* ---------- 章节通用 ---------- */
.page-about .about-section {
  padding: 40px 0;
  scroll-margin-top: calc(var(--header-h) + 20px);
}

.page-about .about-section:first-child {
  padding-top: 0;
}

.page-about .about-section + .about-section {
  border-top: 1px solid var(--line);
}

.page-about .about-sec-head {
  display: grid;
  gap: 10px;
  margin-bottom: 24px;
}

.page-about .about-sec-idx {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--teal);
  font-weight: 600;
}

.page-about .about-sec-title {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.25;
  letter-spacing: -.01em;
  font-weight: 800;
  color: var(--ink);
}

.page-about .about-sec-lead {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-about .about-figure {
  margin: 26px 0 0;
}

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

.page-about .about-inline-cta {
  margin: 20px 0 0;
  font-size: 15px;
  color: var(--ink-2);
}

/* ---------- 技能树 ---------- */
.page-about .about-tree {
  position: relative;
  padding-left: 26px;
}

.page-about .about-tree::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 14px;
  bottom: 14px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--teal), var(--volt) 55%, var(--iris));
}

.page-about .tree-item {
  position: relative;
  margin-bottom: 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .tree-item::before {
  content: "";
  position: absolute;
  left: -24px;
  top: 22px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--volt);
  box-shadow: 0 0 0 3px var(--paper);
}

.page-about .tree-item:nth-child(3)::before {
  background: var(--iris);
}

.page-about .tree-item:nth-child(4)::before {
  background: var(--green);
}

.page-about .tree-item[data-expanded] {
  border-color: var(--volt);
  box-shadow: var(--shadow-2);
}

.page-about .tree-trigger {
  display: flex;
  align-items: center;
  gap: 13px;
  width: 100%;
  padding: 17px 18px;
  background: none;
  border: 0;
  text-align: left;
  font: inherit;
  color: var(--ink);
  cursor: pointer;
  border-radius: var(--radius-m);
  transition: background .2s var(--ease);
}

.page-about .tree-trigger:hover,
.page-about .tree-trigger:focus-visible {
  background: rgba(228, 236, 236, .5);
}

.page-about .tree-num {
  flex: none;
  font-size: 12px;
  font-weight: 600;
  color: var(--teal);
  letter-spacing: .04em;
}

.page-about .tree-title {
  flex: 1;
  min-width: 0;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
}

.page-about .tree-sign {
  position: relative;
  flex: none;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-about .tree-sign::before,
.page-about .tree-sign::after {
  content: "";
  position: absolute;
  background: var(--teal);
  transition: transform .24s var(--ease), opacity .24s var(--ease);
}

.page-about .tree-sign::before {
  left: 5px;
  right: 5px;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-about .tree-sign::after {
  top: 5px;
  bottom: 5px;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%);
}

.page-about .tree-item[data-expanded] .tree-sign {
  border-color: var(--volt);
  background: rgba(24, 199, 183, .12);
}

.page-about .tree-item[data-expanded] .tree-sign::after {
  opacity: 0;
  transform: translateX(-50%) rotate(90deg);
}

.page-about .tree-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows .24s var(--ease);
}

.page-about .tree-item[data-expanded] .tree-panel {
  grid-template-rows: 1fr;
}

.page-about .tree-inner {
  overflow: hidden;
}

.page-about .tree-body {
  margin: 0;
  padding: 0 20px 18px 43px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

/* ---------- 会员权益 ---------- */
.page-about .about-benefits {
  padding: 26px 20px;
  background: var(--mist);
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
}

.page-about .about-bene-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-about .about-bene {
  padding: 16px 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
}

.page-about .about-bene__num {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--iris);
  font-weight: 600;
}

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

.page-about .about-bene__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-about .about-navmap {
  margin-top: 18px;
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow-x: auto;
}

.page-about .about-navmap__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 500px;
}

.page-about .about-navmap__item {
  padding: 6px 10px;
  font-size: 12px;
  white-space: nowrap;
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 6px;
}

.page-about .about-navmap__item--active {
  color: var(--ink);
  font-weight: 700;
  background: var(--orange);
  border-color: var(--orange);
}

.page-about .about-navmap__note {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--ink-2);
}

.page-about .about-navmap__pin {
  flex: none;
  width: 18px;
  height: 2px;
  border-radius: 2px;
  background: var(--orange);
}

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

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 26px 26px;
  margin-left: 5px;
  border-left: 1px solid var(--line);
}

.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
  border-left-color: transparent;
}

.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 5px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--teal);
}

.page-about .about-timeline__item--current::before {
  background: var(--orange);
  border-color: var(--orange);
  box-shadow: 0 0 0 4px var(--orange-soft);
}

.page-about .about-timeline__stage {
  display: block;
  font-size: 11px;
  letter-spacing: .1em;
  font-weight: 600;
  color: var(--teal);
}

.page-about .about-timeline__item--current .about-timeline__stage {
  color: var(--orange);
}

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

.page-about .about-timeline__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

/* ---------- 团队与服务 ---------- */
.page-about .about-team {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}

.page-about .about-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-stat {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "label value"
    "note note";
  gap: 3px 14px;
  align-items: center;
  padding: 13px 16px 13px 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-1);
}

.page-about .about-stat::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: 2px;
  background: var(--teal);
}

.page-about .about-stat:nth-child(2)::before {
  background: var(--volt);
}

.page-about .about-stat:nth-child(3)::before {
  background: var(--iris);
}

.page-about .about-stat:nth-child(4)::before {
  background: var(--orange);
}

.page-about .about-stat:nth-child(5)::before {
  background: var(--green);
}

.page-about .about-stat__label {
  grid-area: label;
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-stat__value {
  grid-area: value;
  font-size: 22px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
  white-space: nowrap;
}

.page-about .about-stat__value--text {
  font-size: 15px;
  color: var(--teal);
}

.page-about .about-stat__unit {
  margin-left: 2px;
  font-size: 12px;
  font-weight: 500;
  color: var(--ink-2);
}

.page-about .about-stat__note {
  grid-area: note;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--ink-2);
}

.page-about .about-team-figure {
  margin: 0;
}

.page-about .about-team-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
  background: var(--mist);
  border-left: 3px solid var(--volt);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
}

/* ---------- 下一步 ---------- */
.page-about .about-next {
  padding: 26px 20px;
  background: var(--orange-soft);
  border: 1px solid rgba(232, 119, 34, .3);
  border-radius: var(--radius-l);
}

.page-about .about-next__title {
  margin: 0;
  font-size: clamp(22px, 3.2vw, 30px);
  line-height: 1.3;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-about .about-next__lead {
  margin: 10px 0 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-about .about-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  margin-top: 20px;
}

.page-about .about-next__card {
  display: grid;
  gap: 5px;
  padding: 16px 18px;
  text-decoration: none;
  background: var(--panel);
  border: 1px solid rgba(232, 119, 34, .22);
  border-radius: var(--radius-m);
  transition: transform .2s var(--ease), border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-about .about-next__card:hover,
.page-about .about-next__card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--orange);
  box-shadow: var(--shadow-2);
}

.page-about .about-next__k {
  font-size: 11px;
  letter-spacing: .12em;
  font-weight: 600;
  color: var(--orange);
}

.page-about .about-next__t {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-about .about-next__d {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-2);
}

.page-about .about-next__go {
  margin-top: 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--teal);
}

.page-about .about-next__foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

/* ---------- 桌面增强 ---------- */
@media (min-width: 640px) {
  .page-about .about-bene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-about .about-benefits {
    padding: 30px 28px;
  }

  .page-about .about-next {
    padding: 32px 30px;
  }
}

@media (min-width: 720px) {
  .page-about .about-cover__index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-about .cover-idx {
    border-bottom: 0;
    border-left: 0;
    border-top: 2px solid transparent;
    padding: 16px 12px;
  }

  .page-about .cover-idx:hover,
  .page-about .cover-idx:focus-visible {
    border-top-color: var(--orange);
    border-left-color: transparent;
  }
}

@media (min-width: 900px) {
  .page-about .about-cover {
    padding-top: 64px;
  }

  .page-about .about-cover__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 52px;
  }

  .page-about .about-cover__index {
    margin-top: 48px;
  }

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

  .page-about .about-timeline__item {
    margin-left: 0;
    padding: 30px 20px 0 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }

  .page-about .about-timeline__item:last-child {
    border-top-color: var(--line);
  }

  .page-about .about-timeline__item::before {
    left: 0;
    top: -6px;
  }

  .page-about .about-team {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    gap: 30px;
  }

  .page-about .about-team-figure {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

@media (min-width: 1000px) {
  .page-about .about-layout {
    grid-template-columns: var(--about-aside) minmax(0, 1fr);
    gap: 56px;
    padding-top: 56px;
    padding-bottom: 84px;
  }

  .page-about .about-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-about .about-index__title {
    display: block;
  }

  .page-about .about-index__list {
    display: block;
    padding: 0;
    overflow: visible;
  }

  .page-about .about-index__list li + li {
    margin-top: 2px;
  }

  .page-about .about-index__link {
    display: flex;
    padding: 9px 0 9px 14px;
    font-size: 14px;
    background: transparent;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
  }

  .page-about .about-index__link:hover,
  .page-about .about-index__link:focus-visible {
    border-left-color: var(--orange);
    color: var(--ink);
  }

  .page-about .tree-body {
    padding-left: 47px;
  }

  .page-about .tree-trigger {
    padding: 18px 20px;
  }
}
</｜｜DSML｜｜ parameter>
</invoke>