.page-about {
  --about-cut: 10deg;
  --about-narrow: 940px;
}

.page-about [id] {
  scroll-margin-top: 104px;
}

.page-about .about-crumb {
  padding-top: clamp(20px, 3vw, 34px);
}

/* ---------- 首屏拼贴 ---------- */
.page-about .about-hero {
  padding-top: clamp(18px, 3vw, 30px);
  padding-bottom: clamp(30px, 5vw, 54px);
}

.page-about .collage {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .collage__lead {
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(155deg, rgba(245, 179, 1, .11) 0%, rgba(245, 179, 1, 0) 44%),
    linear-gradient(180deg, var(--panel-2), #0c1017);
  box-shadow: var(--shadow-panel);
}

.page-about .collage__lead::before {
  content: "";
  position: absolute;
  left: -14%;
  top: -42%;
  width: 76%;
  height: 168%;
  background: linear-gradient(102deg, rgba(45, 226, 230, .10), rgba(45, 226, 230, 0) 72%);
  transform: rotate(var(--about-cut));
  pointer-events: none;
}

.page-about .collage__lead > * {
  position: relative;
  z-index: 1;
}

.page-about .collage__lead h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(26px, 4.6vw, 42px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--white);
  max-width: 22ch;
}

.page-about .collage__lead .lede {
  margin: 0;
  max-width: 48ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.82;
  color: var(--mist);
}

.page-about .collage__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}

.page-about .collage__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .collage__meta {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .collage__meta .stat {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--sun);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
}

.page-about .collage__meta .stat__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  letter-spacing: -0.02em;
  color: var(--sun);
}

.page-about .collage__meta .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

@media (min-width: 920px) {
  .page-about .collage {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 20px;
    align-items: stretch;
  }
  .page-about .collage__lead {
    grid-column: 1 / span 7;
    grid-row: 1 / span 2;
  }
  .page-about .collage__figure {
    grid-column: 8 / span 5;
    grid-row: 1;
  }
  .page-about .collage__meta {
    grid-column: 8 / span 5;
    grid-row: 2;
  }
}

/* ---------- 页内目录 ---------- */
.page-about .about-index {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(20, 24, 33, .92), rgba(10, 12, 16, .45));
}

.page-about .about-index ol {
  list-style: none;
  margin: 0;
  padding: 14px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
}

.page-about .about-index a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 13px;
  font-size: 14px;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}

.page-about .about-index a:hover,
.page-about .about-index a:focus-visible {
  color: var(--sun);
  border-color: rgba(245, 179, 1, .45);
  background: rgba(245, 179, 1, .07);
}

.page-about .idx-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--sun);
  opacity: .85;
}

/* ---------- 内容时钟 ---------- */
.page-about .about-clock {
  padding-block: clamp(46px, 7vw, 92px);
}

.page-about .about-clock__head {
  display: grid;
  gap: 14px;
  max-width: 700px;
}

.page-about .about-clock__head .prose {
  margin: 0;
  max-width: 64ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .clock-track {
  list-style: none;
  margin: clamp(26px, 4vw, 44px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
}

.page-about .clock-node {
  position: relative;
  padding: 16px 0 16px 28px;
  border-left: 1px solid var(--line);
}

.page-about .clock-node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 25px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--sun);
  box-shadow: 0 0 0 4px rgba(245, 179, 1, .14);
}

.page-about .clock-node__year {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.02em;
  color: var(--sun-hi);
}

.page-about .clock-node__text {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 860px) {
  .page-about .clock-track {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0 20px;
    border-top: 1px solid var(--line);
  }
  .page-about .clock-node {
    padding: 36px 0 0;
    border-left: 0;
  }
  .page-about .clock-node::before {
    left: 0;
    top: -5px;
  }
}

.page-about .clock-meter {
  margin-top: clamp(26px, 4vw, 40px);
  display: grid;
  gap: 10px;
}

.page-about .clock-meter .progress {
  height: 6px;
}

.page-about .clock-meter__fill {
  width: 92%;
  background: linear-gradient(90deg, var(--cyan), var(--sun-hi));
}

.page-about .clock-meter__legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--mist-2);
}

.page-about .clock-meter__now {
  color: var(--sun);
}

.page-about .clock-figure {
  margin: clamp(28px, 4vw, 46px) 0 0;
}

.page-about .clock-figure .media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-about .clock-figure .note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-2);
}

/* ---------- 评测方法 ---------- */
.page-about .about-review {
  padding-block: clamp(46px, 7vw, 92px);
  background: linear-gradient(180deg, rgba(20, 24, 33, .45), rgba(10, 12, 16, 0) 62%);
}

.page-about .about-review__inner {
  max-width: var(--about-narrow);
  margin-inline: auto;
}

.page-about .about-review__head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-review__head .prose {
  margin: 0;
  max-width: 62ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .dim-grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 12px;
}

.page-about .dim {
  position: relative;
  padding: 18px 16px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: linear-gradient(168deg, var(--panel) 0%, var(--panel-2) 100%);
  transition: transform .2s ease, border-color .2s ease;
}

.page-about .dim:hover {
  transform: translateY(-3px);
  border-color: rgba(245, 179, 1, .38);
}

.page-about .dim__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--sun);
}

.page-about .dim:nth-child(3n+2) .dim__idx {
  color: var(--cyan);
}

.page-about .dim:nth-child(3n) .dim__idx {
  color: var(--magenta);
}

.page-about .dim__name {
  margin: 8px 0 6px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-about .dim__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 核对流程 ---------- */
.page-about .about-verify {
  padding-block: clamp(46px, 7vw, 96px);
}

.page-about .verify-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
}

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

.page-about .verify-figure .media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

.page-about .verify-copy .prose {
  margin: 0;
  max-width: 56ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .check-list {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-about .check-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-2);
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
}

.page-about .check-item .tag {
  flex: 0 0 auto;
  margin-top: 2px;
}

@media (min-width: 900px) {
  .page-about .verify-grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 1fr);
  }
}

/* ---------- 团队与协作 ---------- */
.page-about .about-team {
  padding-block: clamp(46px, 7vw, 92px);
  background: linear-gradient(180deg, rgba(20, 24, 33, .5), rgba(10, 12, 16, 0) 68%);
}

.page-about .about-team__head {
  display: grid;
  gap: 14px;
  max-width: 700px;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-about .about-team__head .prose {
  margin: 0;
  max-width: 62ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .team-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .team-card {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-2);
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease;
}

.page-about .team-card::after {
  content: "";
  position: absolute;
  right: -28px;
  bottom: -34px;
  width: 96px;
  height: 96px;
  background: linear-gradient(140deg, rgba(245, 179, 1, .16), rgba(245, 179, 1, 0) 70%);
  transform: rotate(var(--about-cut));
  pointer-events: none;
}

.page-about .team-card:hover {
  transform: translateY(-3px);
  border-color: rgba(45, 226, 230, .35);
}

.page-about .team-card__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--sun);
}

.page-about .team-card__name {
  margin: 12px 0 8px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
}

.page-about .team-card__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .partner-panel {
  margin-top: clamp(20px, 3vw, 32px);
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  padding: clamp(22px, 3.4vw, 34px);
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(45, 226, 230, .07), rgba(20, 24, 33, .9) 52%);
}

.page-about .partner-panel__title {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2.4vw, 22px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-about .partner-panel__text {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .partner-panel__meter {
  display: grid;
  gap: 10px;
  align-content: center;
}

.page-about .partner-panel__meter .progress {
  height: 6px;
}

.page-about .partner-panel__fill {
  width: 64%;
}

.page-about .partner-panel__meter .note {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist-2);
}

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

@media (min-width: 1000px) {
  .page-about .team-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .partner-panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
    gap: 34px;
  }
}

/* ---------- 里程碑 ---------- */
.page-about .about-milestones {
  padding-block: clamp(46px, 7vw, 96px);
}

.page-about .about-milestones__head {
  display: grid;
  gap: 12px;
  max-width: var(--about-narrow);
  margin-inline: auto;
  margin-bottom: clamp(22px, 3.4vw, 36px);
}

.page-about .mile-list {
  list-style: none;
  margin: 0 auto;
  padding: 0;
  max-width: var(--about-narrow);
  border-left: 1px solid var(--line);
}

.page-about .mile {
  position: relative;
  padding-left: 24px;
}

.page-about .mile::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 26px;
  width: 11px;
  height: 11px;
  border-radius: 2px;
  background: var(--void);
  border: 2px solid var(--sun);
  transform: rotate(45deg);
}

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

.page-about .mile__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

.page-about .mile__summary::-webkit-details-marker {
  display: none;
}

.page-about .mile__summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--mist-2);
  transition: color .18s ease, transform .2s ease;
}

.page-about .mile__item[open] .mile__summary::after {
  content: "−";
  color: var(--sun);
}

.page-about .mile__summary:hover::after {
  color: var(--sun);
}

.page-about .mile__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: -0.02em;
  color: var(--sun);
}

.page-about .mile__title {
  font-family: var(--font-head);
  font-size: clamp(15px, 1.8vw, 17px);
  font-weight: 700;
  color: var(--white);
}

.page-about .mile__body {
  padding: 0 0 20px;
}

.page-about .mile__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */
.page-about .about-cta {
  padding-block: clamp(36px, 5vw, 68px) clamp(48px, 7vw, 96px);
}

.page-about .cta-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 22px;
  padding: clamp(24px, 3.6vw, 42px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(118deg, rgba(255, 60, 172, .09) 0%, rgba(245, 179, 1, .08) 46%, rgba(10, 12, 16, 0) 78%),
    var(--panel-2);
  box-shadow: var(--shadow-island);
}

.page-about .cta-panel__text {
  display: grid;
  gap: 12px;
}

.page-about .cta-panel__text .prose {
  margin: 0;
  max-width: 60ch;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .cta-panel__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-content: start;
}

@media (min-width: 900px) {
  .page-about .cta-panel {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: center;
    gap: 34px;
  }
  .page-about .cta-panel__links {
    justify-content: flex-end;
  }
}

/* ---------- 响应式收口 ---------- */
@media (max-width: 619px) {
  .page-about .collage__meta {
    grid-template-columns: 1fr;
  }
  .page-about .dim-grid {
    grid-template-columns: 1fr;
  }
  .page-about .mile {
    padding-left: 18px;
  }
  .page-about .mile__summary {
    flex-wrap: wrap;
    gap: 6px 12px;
  }
}
<<<END>>>