/* ===== 品牌使命页 · 页面专属样式（作用域 .page-about） ===== */
.page-about {
  --about-rail: 216px;
  --about-fast: .24s;
  padding-bottom: clamp(48px, 7vw, 110px);
}

/* ---------- 面包屑与首屏 ---------- */
.page-about .breadcrumbs {
  margin-top: clamp(16px, 3vw, 32px);
}

.page-about .about-hero {
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(26px, 4.6vw, 58px) 0 clamp(34px, 5vw, 72px);
  align-items: end;
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  }
}

.page-about .page-title {
  margin: 14px 0 0;
  font-family: var(--font-wide);
  font-weight: 200;
  font-size: clamp(32px, 5.4vw, 62px);
  line-height: 1.1;
  letter-spacing: .055em;
  color: var(--ice);
}

.page-about .about-hero__text {
  max-width: 56ch;
  margin-top: clamp(16px, 2vw, 24px);
  font-size: clamp(16px, 1.3vw, 18px);
  line-height: 1.82;
  color: rgba(232, 241, 255, .78);
}

.page-about .about-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 2.4vw, 28px);
}

.page-about .about-hero__facts {
  display: grid;
  gap: 1px;
  border: 1px solid var(--hairline-soft);
  background: var(--hairline-soft);
}

.page-about .about-fact {
  padding: clamp(18px, 2.4vw, 26px);
  background:
    linear-gradient(140deg, rgba(53, 230, 255, .06), rgba(110, 91, 255, .05) 58%, transparent),
    var(--deep);
}

.page-about .about-fact__value {
  display: flex;
  align-items: baseline;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.2vw, 42px);
  line-height: 1;
  letter-spacing: -.01em;
  color: var(--lime);
}

.page-about .about-fact__unit {
  font-size: .4em;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-about .about-fact__label {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 窄栏 + 宽栏杂志式对位 ---------- */
.page-about .about-split {
  display: grid;
  gap: clamp(20px, 3.2vw, 36px);
}

@media (min-width: 1024px) {
  .page-about .about-split {
    grid-template-columns: var(--about-rail) minmax(0, 1fr);
    gap: clamp(34px, 5vw, 78px);
  }

  .page-about .about-split__rail {
    position: sticky;
    top: calc(var(--topbar-h) + 28px);
    align-self: start;
  }
}

.page-about .about-split__note {
  margin-top: 12px;
  padding-left: 14px;
  border-left: 1px solid var(--hairline-soft);
  font-size: 13px;
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-h2 {
  font-family: var(--font-wide);
  font-weight: 300;
  font-size: clamp(23px, 2.9vw, 34px);
  line-height: 1.28;
  letter-spacing: .045em;
  color: var(--ice);
}

.page-about .about-lede {
  max-width: 58ch;
  margin-top: 14px;
  font-size: clamp(15.5px, 1.25vw, 17px);
  line-height: 1.82;
  color: rgba(143, 163, 196, .95);
}

/* ---------- 通用图框 ---------- */
.page-about .about-figure {
  margin: clamp(24px, 3.4vw, 40px) 0;
  border: 1px solid var(--hairline-soft);
  background: var(--deep);
}

.page-about .about-figure--tight {
  margin-top: clamp(20px, 2.8vw, 30px);
}

.page-about .about-figure img,
.page-about .cert-badge img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 阶段时间轴 ---------- */
.page-about .phase-list {
  position: relative;
  margin-top: clamp(6px, 1.4vw, 14px);
  display: grid;
}

.page-about .phase-list::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 14px;
  bottom: 26px;
  width: 1px;
  background: linear-gradient(180deg, var(--hairline) 0%, rgba(53, 230, 255, .3) 48%, var(--cyan) 100%);
}

.page-about .phase-list__item {
  position: relative;
  padding: 0 0 clamp(28px, 3.8vw, 44px) 52px;
}

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

.page-about .phase-list__no {
  position: absolute;
  left: 0;
  top: 2px;
  width: 31px;
  height: 31px;
  display: grid;
  place-items: center;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  background: var(--void);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--mist);
  transition: color var(--about-fast) var(--ease), border-color var(--about-fast) var(--ease);
}

.page-about .phase-list__item:nth-child(2) .phase-list__no {
  border-color: rgba(53, 230, 255, .34);
  color: rgba(232, 241, 255, .76);
}

.page-about .phase-list__item:nth-child(3) .phase-list__no {
  border-color: rgba(53, 230, 255, .62);
  color: var(--cyan);
}

.page-about .phase-list__item:nth-child(4) .phase-list__no {
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(53, 230, 255, .1);
}

.page-about .phase-list__title {
  font-size: 19px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--ice);
}

.page-about .phase-list__text {
  max-width: 60ch;
  margin-top: 8px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 认证说明牌 ---------- */
.page-about .cert-layout {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  margin-top: clamp(22px, 3vw, 32px);
}

@media (min-width: 900px) {
  .page-about .cert-layout {
    grid-template-columns: minmax(0, 244px) minmax(0, 1fr);
    align-items: start;
  }
}

.page-about .cert-badge {
  border: 1px solid var(--hairline-soft);
  background:
    radial-gradient(circle at 50% 44%, rgba(53, 230, 255, .12), transparent 62%),
    var(--deep);
}

.page-about .cert-plates {
  display: grid;
  gap: 12px;
}

.page-about .cert-plate {
  padding: clamp(18px, 2.2vw, 24px) clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--hairline-soft);
  border-left: 2px solid rgba(53, 230, 255, .45);
  background: var(--deep);
  transition: border-color var(--about-fast) var(--ease), background var(--about-fast) var(--ease);
}

.page-about .cert-plate__tag {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--cyan);
}

.page-about .cert-plate__title {
  margin-top: 6px;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--ice);
}

.page-about .cert-plate__claim {
  margin-top: 10px;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(232, 241, 255, .84);
}

.page-about .cert-plate__note {
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--mist);
  transition: color var(--about-fast) var(--ease);
}

@media (hover: hover) {
  .page-about .cert-plate:hover {
    border-color: rgba(53, 230, 255, .5);
    border-left-color: var(--cyan);
    background:
      linear-gradient(120deg, rgba(53, 230, 255, .055), transparent 72%),
      var(--deep);
  }

  .page-about .cert-plate:hover .cert-plate__note {
    color: rgba(232, 241, 255, .74);
  }
}

/* ---------- 运营准则 ---------- */
.page-about .rule-list {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3vw, 32px);
  background: var(--hairline-soft);
  border-top: 1px solid var(--hairline-soft);
  border-bottom: 1px solid var(--hairline-soft);
}

@media (min-width: 768px) {
  .page-about .rule-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-about .rule-list__item {
  padding: clamp(20px, 2.6vw, 30px);
  background: var(--void);
}

.page-about .rule-list__no {
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-about .rule-list__title {
  margin-top: 10px;
  font-size: 18px;
  font-weight: 500;
  letter-spacing: .07em;
  color: var(--ice);
}

.page-about .rule-list__text {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 数据口径表 ---------- */
.page-about .about-table-wrap {
  margin-top: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--hairline-soft);
  overflow-x: auto;
}

.page-about .about-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-about .about-table th,
.page-about .about-table td {
  padding: 14px clamp(14px, 2vw, 20px);
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--hairline-soft);
}

.page-about .about-table thead th {
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: .16em;
  color: var(--mist);
  background: var(--deep);
}

.page-about .about-table tbody tr {
  transition: background var(--about-fast) var(--ease);
}

.page-about .about-table tbody tr:last-child th,
.page-about .about-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-about .about-table__key {
  font-weight: 500;
  letter-spacing: .05em;
  color: var(--ice);
}

.page-about .about-table__rate {
  font-family: var(--font-mono);
  letter-spacing: .02em;
  color: var(--lime);
}

.page-about .about-table__link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 255, .35);
}

@media (hover: hover) {
  .page-about .about-table tbody tr:hover {
    background: var(--slab);
  }
}

.page-about .about-table__link:hover {
  border-bottom-color: var(--cyan);
}

.page-about .about-footnote {
  margin-top: 16px;
  max-width: 62ch;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 栏目分工网格 ---------- */
.page-about .col-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
  grid-template-columns: minmax(0, 1fr);
}

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

@media (min-width: 1024px) {
  .page-about .col-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-about .col-card:nth-child(1) { grid-column: span 2; }
  .page-about .col-card:nth-child(2) { grid-column: span 4; }
  .page-about .col-card:nth-child(3) { grid-column: span 4; }
  .page-about .col-card:nth-child(4) { grid-column: span 2; }
  .page-about .col-card:nth-child(5) { grid-column: span 3; }
  .page-about .col-card:nth-child(6) { grid-column: span 3; }
}

.page-about .col-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 26px);
  border: 1px solid var(--hairline-soft);
  background:
    linear-gradient(160deg, rgba(110, 91, 255, .07), transparent 62%),
    var(--deep);
  transition: border-color var(--about-fast) var(--ease);
}

.page-about .col-card--current {
  border-color: rgba(53, 230, 255, .42);
  background:
    linear-gradient(160deg, rgba(53, 230, 255, .08), transparent 64%),
    var(--deep);
}

.page-about .col-card__label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-about .col-card__badge {
  padding: 2px 8px;
  border: 1px solid rgba(201, 255, 69, .38);
  font-family: var(--font-sans);
  font-size: 10.5px;
  letter-spacing: .12em;
  color: var(--lime);
}

.page-about .col-card__title {
  font-size: 17px;
  font-weight: 500;
  letter-spacing: .07em;
  color: var(--ice);
}

.page-about .col-card__text {
  flex: 1;
  font-size: 14px;
  line-height: 1.82;
  color: var(--mist);
}

.page-about .col-card__link {
  align-self: flex-start;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 255, .3);
}

.page-about .col-card__link:hover {
  border-bottom-color: var(--cyan);
}

@media (hover: hover) {
  .page-about .col-card:hover {
    border-color: rgba(53, 230, 255, .45);
  }
}

/* ---------- 客服与承诺边界 ---------- */
.page-about .support {
  display: grid;
  gap: clamp(22px, 3vw, 32px);
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--hairline-soft);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(53, 230, 255, .09), transparent 56%),
    radial-gradient(110% 130% at 100% 100%, rgba(255, 61, 174, .08), transparent 60%),
    var(--deep);
}

@media (min-width: 900px) {
  .page-about .support {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  }
}

.page-about .support__text {
  max-width: 52ch;
  margin-top: 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(232, 241, 255, .8);
}

.page-about .copy-mail {
  margin-top: clamp(18px, 2.4vw, 26px);
}

.page-about .support-list {
  display: grid;
  gap: 1px;
  background: var(--hairline-soft);
  border: 1px solid var(--hairline-soft);
}

.page-about .support-list__item {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: rgba(5, 9, 18, .68);
}

.page-about .support-list__key {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-about .support-list__val {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ice);
  word-break: break-word;
}

.page-about .support-list__val.mono {
  color: var(--lime);
  letter-spacing: .04em;
}

.page-about .support__note {
  margin-top: 16px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about * {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
  }
}
<<<END>>>