/* ================= 品牌自述页 · 专属样式 ================= */
.page-about {
  --ab-note-w: 258px;
  --ab-track: rgba(185, 194, 204, .45);
  background: var(--c-paper);
  color: var(--c-graphite);
  font-family: var(--font-sans);
}

/* ---------- 面包屑 ---------- */
.page-about .crumbs {
  padding-top: clamp(20px, 3vw, 34px);
  font-size: 14px;
}
.page-about .crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--c-muted);
}
.page-about .crumbs__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-line);
}
.page-about .crumbs__list a {
  color: var(--c-blue);
  text-decoration: none;
}
.page-about .crumbs__list a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-about .crumbs__list [aria-current="page"] {
  color: var(--c-graphite);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding-block: clamp(28px, 4.5vw, 60px) clamp(40px, 6vw, 84px);
}
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 52px);
  align-items: center;
}
.page-about .about-hero__copy h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 5.4vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--c-ink);
  max-width: 18ch;
}
.page-about .about-hero__copy .lead {
  margin-top: clamp(18px, 2.4vw, 26px);
  max-width: 56ch;
  font-size: clamp(15px, 1.15vw, 17px);
  line-height: 1.8;
  color: var(--c-muted);
}
.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
  background: linear-gradient(150deg, var(--c-ink), #0d2c5c 55%, var(--c-blue-deep));
  box-shadow: var(--shadow-2);
}
.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  mix-blend-mode: luminosity;
  opacity: .86;
}
.page-about .about-hero__media .figure__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: #d9e7ff;
  background: linear-gradient(0deg, rgba(6, 26, 58, .88), rgba(6, 26, 58, 0));
}

/* 关键数字带 */
.page-about .about-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(32px, 5vw, 64px);
  background: rgba(0, 229, 255, .22);
  border-radius: var(--radius-m);
  overflow: hidden;
  box-shadow: var(--shadow-1);
}
.page-about .about-stats__item {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 24px;
  background: var(--c-ink);
}
.page-about .about-stats__item .stat__value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  font-family: var(--font-mono);
  color: var(--c-cyan);
  line-height: 1;
}
.page-about .about-stats__item .stat__num {
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 700;
  letter-spacing: -0.02em;
}
.page-about .about-stats__item .stat__unit {
  font-size: 14px;
  color: rgba(255, 255, 255, .68);
}
.page-about .about-stats__item .stat__label {
  font-size: 13px;
  letter-spacing: .04em;
  color: rgba(255, 255, 255, .74);
}

/* ---------- 区块与编辑部栅格 ---------- */
.page-about .about-section {
  padding-block: clamp(52px, 8vw, 108px);
}
.page-about .about-section--silver {
  background: var(--c-silver);
}
.page-about .about-section--ink {
  background: var(--c-ink);
  color: var(--c-paper);
}
.page-about .about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.5vw, 40px);
}
.page-about .about-note {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  padding-top: 12px;
  border-top: 2px solid var(--c-red);
}
.page-about .about-note__idx {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 700;
  color: var(--c-red);
  line-height: 1;
}
.page-about .about-note__label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--c-ink);
}
.page-about .about-note__meta {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--c-muted);
}
.page-about .about-note--dark {
  border-top-color: var(--c-cyan);
}
.page-about .about-note--dark .about-note__idx {
  color: var(--c-cyan);
}
.page-about .about-note--dark .about-note__label {
  color: #e9f4ff;
}
.page-about .about-note--dark .about-note__meta {
  color: rgba(233, 244, 255, .62);
}

.page-about .about-body h2 {
  margin: 0 0 clamp(16px, 2.4vw, 24px);
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.24;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--c-ink);
  max-width: 24ch;
}
.page-about .about-body__lead {
  margin: 0 0 clamp(24px, 3.4vw, 38px);
  max-width: 62ch;
  font-size: clamp(15px, 1.1vw, 17px);
  line-height: 1.8;
  color: var(--c-muted);
}
.page-about .about-body--dark h2 {
  color: #ffffff;
}
.page-about .about-body--dark .about-body__lead {
  color: rgba(233, 244, 255, .72);
}

.page-about .prose {
  max-width: 68ch;
}
.page-about .prose p {
  margin: 0 0 1.2em;
  font-size: clamp(15px, 1.05vw, 17px);
  line-height: 1.85;
  color: var(--c-graphite);
}
.page-about .prose p:last-child {
  margin-bottom: 0;
}
.page-about .about-prose--dark p {
  color: rgba(233, 244, 255, .82);
}
.page-about .about-prose--eco {
  margin-top: clamp(24px, 3.4vw, 38px);
}

.page-about .about-more {
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--c-muted);
}
.page-about .about-more--dark {
  color: rgba(233, 244, 255, .72);
}
.page-about .about-more .link-more {
  color: var(--c-blue);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(10, 91, 255, .35);
  padding-bottom: 1px;
}
.page-about .about-more .link-more:hover {
  border-bottom-color: currentColor;
}
.page-about .about-more .link-more--dark {
  color: var(--c-cyan);
  border-bottom-color: rgba(0, 229, 255, .45);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  list-style: none;
  margin: 0 0 clamp(32px, 4.6vw, 52px);
  padding: 0 0 0 30px;
  position: relative;
}
.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-red), var(--c-line) 20%, var(--c-line) 82%, rgba(185, 194, 204, 0));
}
.page-about .about-timeline__item {
  position: relative;
  padding-bottom: clamp(26px, 3.6vw, 44px);
}
.page-about .about-timeline__item:last-child {
  padding-bottom: 0;
}
.page-about .about-timeline__item::before {
  content: "";
  position: absolute;
  left: -30px;
  top: 5px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--c-paper);
  border: 2px solid var(--c-red);
  box-shadow: 0 0 0 4px rgba(216, 65, 47, .1);
}
.page-about .about-section--ink .about-timeline__item::before {
  background: var(--c-ink);
}
.page-about .about-timeline__stage {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-red);
  text-transform: uppercase;
}
.page-about .about-timeline__content h3 {
  margin: 0 0 10px;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.45;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}
.page-about .about-timeline__content p {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--c-muted);
  max-width: 60ch;
}

/* ---------- 图片 ---------- */
.page-about .about-figure {
  margin: 0;
}
.page-about .figure__media--placeholder {
  position: relative;
  border-radius: var(--radius-m);
  overflow: hidden;
  background:
    repeating-linear-gradient(0deg, rgba(185, 194, 204, .3) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, rgba(185, 194, 204, .3) 0 1px, transparent 1px 32px),
    linear-gradient(140deg, #eae6dd, #d8dee6);
  border: 1px solid var(--c-line);
}
.page-about .about-figure__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}
.page-about .about-figure--materials .figure__media--placeholder {
  background:
    repeating-linear-gradient(0deg, rgba(185, 194, 204, .28) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(185, 194, 204, .28) 0 1px, transparent 1px 28px),
    linear-gradient(140deg, #dfe6ee, #c7d2dd);
}
.page-about .about-figure__media img[width="1200"] {
  aspect-ratio: 3 / 2;
}
.page-about .about-figure .figure__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--c-muted);
  letter-spacing: .02em;
}
.page-about .about-figure {
  margin-bottom: clamp(28px, 4vw, 44px);
}
.page-about .about-timeline + .about-figure {
  margin-bottom: 0;
}

/* ---------- 原料可追溯三层 ---------- */
.page-about .about-trace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-about .about-trace__layer {
  position: relative;
  padding: 26px 20px 22px;
  background: #ffffff;
  border: 1px solid var(--c-line);
  border-radius: var(--radius-m);
  transition: border-color .3s var(--ease), transform .3s var(--ease);
}
.page-about .about-trace__layer::before {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  top: 0;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--c-blue), var(--c-cyan));
}
.page-about .about-trace__layer:hover {
  border-color: var(--c-blue);
  transform: translateY(-2px);
}
.page-about .about-trace__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-blue);
}
.page-about .about-trace__title {
  margin: 8px 0 8px;
  font-size: 15px;
  font-weight: 700;
  color: var(--c-ink);
}
.page-about .about-trace__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-muted);
}

/* ---------- 参数六组 ---------- */
.page-about .about-groups {
  list-style: none;
  margin: 0 0 clamp(26px, 3.6vw, 40px);
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1px;
  background: rgba(0, 229, 255, .18);
  border: 1px solid rgba(0, 229, 255, .18);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.page-about .about-groups__item {
  padding: 22px 18px 24px;
  background: #0b2247;
}
.page-about .about-groups__id {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-cyan);
  border: 1px solid rgba(0, 229, 255, .4);
  border-radius: var(--pill);
  padding: 2px 9px;
  margin-bottom: 12px;
}
.page-about .about-groups__name {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: #ffffff;
}
.page-about .about-groups__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(233, 244, 255, .68);
}

/* ---------- 区域网络 ---------- */
.page-about .about-network {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(4px, 1vw, 10px);
}
.page-about .about-network__hub {
  padding: 24px 22px;
  border-radius: var(--radius-m);
  background: linear-gradient(150deg, var(--c-ink), #0d2f63);
  color: #fff;
  box-shadow: var(--shadow-1);
}
.page-about .about-network__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--c-cyan);
  margin-bottom: 12px;
}
.page-about .about-network__name {
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
}
.page-about .about-network__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(233, 244, 255, .72);
}
.page-about .about-network__spokes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  border-top: 1px solid var(--c-line);
}
.page-about .about-network__spokes li {
  padding: 14px 4px 14px 18px;
  border-bottom: 1px solid var(--c-line);
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-graphite);
  position: relative;
}
.page-about .about-network__spokes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c-blue);
}

/* ---------- 响应时效 ---------- */
.page-about .about-sla {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(26px, 3.6vw, 40px);
  background: var(--c-line);
  border-radius: var(--radius-m);
  overflow: hidden;
}
.page-about .about-sla__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  padding: 20px 20px 22px;
  background: var(--c-paper);
}
.page-about .about-sla__num {
  font-family: var(--font-mono);
  font-size: clamp(28px, 3.6vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--c-orange);
}
.page-about .about-sla__unit {
  font-size: 13px;
  color: var(--c-muted);
}
.page-about .about-sla__label {
  width: 100%;
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--c-graphite);
}

/* ---------- 客户分布 ---------- */
.page-about .about-dist {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--ab-track);
}
.page-about .about-dist__row {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr) 46px;
  align-items: center;
  gap: 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--ab-track);
}
.page-about .about-dist__region {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-ink);
}
.page-about .about-dist__track {
  display: block;
  height: 8px;
  border-radius: var(--pill);
  background: rgba(185, 194, 204, .45);
  overflow: hidden;
}
.page-about .about-dist__bar {
  display: block;
  height: 100%;
  width: var(--w, 0%);
  border-radius: var(--pill);
  background: linear-gradient(90deg, var(--c-blue), var(--c-cyan));
}
.page-about .about-dist__val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  text-align: right;
  color: var(--c-ink);
}

/* ---------- 收尾行动区 ---------- */
.page-about .about-cta {
  padding-block: clamp(48px, 7vw, 96px);
  background:
    radial-gradient(120% 140% at 88% 0%, rgba(0, 229, 255, .16), transparent 58%),
    linear-gradient(160deg, var(--c-ink) 0%, #08234c 100%);
  color: #fff;
}
.page-about .about-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
  padding-top: clamp(20px, 3vw, 32px);
  border-top: 1px solid rgba(0, 229, 255, .28);
}
.page-about .eyebrow--light {
  color: var(--c-cyan);
}
.page-about .about-cta__copy h2 {
  margin: 12px 0 14px;
  font-size: clamp(24px, 3.2vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: #ffffff;
  max-width: 22ch;
}
.page-about .about-cta__copy p {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(14.5px, 1.05vw, 16.5px);
  line-height: 1.85;
  color: rgba(233, 244, 255, .76);
}
.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式：平板 ---------- */
@media (min-width: 720px) {
  .page-about .about-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
  .page-about .about-trace {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-about .about-network__spokes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 24px;
  }
  .page-about .about-sla {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 响应式：桌面非对称编辑部栅格 ---------- */
@media (min-width: 1024px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: clamp(48px, 6vw, 88px);
  }
  .page-about .about-grid {
    grid-template-columns: var(--ab-note-w) minmax(0, 1fr);
    gap: clamp(40px, 6vw, 92px);
  }
  .page-about .about-note {
    display: block;
    border-top-width: 2px;
  }
  .page-about .about-note__idx {
    display: block;
    font-size: 34px;
    margin-bottom: 10px;
  }
  .page-about .about-note__label {
    display: block;
    margin-bottom: 8px;
    line-height: 1.5;
  }
  .page-about .about-note__meta {
    display: block;
  }
  .page-about .about-timeline__item {
    display: grid;
    grid-template-columns: 128px minmax(0, 1fr);
    column-gap: 32px;
  }
  .page-about .about-timeline__stage {
    text-align: right;
    padding-top: 5px;
    margin-bottom: 0;
  }
  .page-about .about-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
  .page-about .about-trace {
    margin-top: 4px;
  }
}

/* ---------- 减少动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-about .about-trace__layer,
  .page-about .about-dist__bar {
    transition: none;
  }
  .page-about .about-trace__layer:hover {
    transform: none;
  }
}

.page-about {
  --w: 1rem;
}