/* ============================================
   品牌价值页 / page-about
   ============================================ */

.page-about {
  --about-ln-pad: clamp(20px, 3vw, 38px);
  --about-cell-pad: clamp(18px, 2.6vw, 30px);
  display: block;
}

/* ---------- 图片基础 ---------- */
.page-about img {
  max-width: 100%;
  height: auto;
}

.page-about .sk-figure__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--sk-line);
  background: var(--sk-deck);
  aspect-ratio: 16 / 9;
}

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

/* ---------- 01 首屏拼贴 ---------- */
.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
  margin-top: clamp(18px, 3vw, 34px);
}

.page-about .about-hero__media {
  margin: 0;
}

.page-about .about-hero__media .sk-figure__media {
  aspect-ratio: 3 / 2;
}

.page-about .about-hero__facts {
  list-style: none;
  margin: clamp(22px, 3vw, 34px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--sk-line-soft);
  border: 1px solid var(--sk-line);
}

.page-about .about-hero__facts li {
  background: var(--sk-deep);
  padding: 14px 16px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: background var(--sk-t);
}

.page-about .about-hero__facts li:hover {
  background: var(--sk-deck);
}

.page-about .about-hero__val {
  font-family: var(--sk-font-mono);
  font-size: clamp(21px, 3vw, 27px);
  font-weight: 700;
  line-height: 1;
  color: var(--sk-cyan);
  letter-spacing: -.01em;
}

.page-about .about-hero__key {
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--sk-mute);
}

@media (min-width: 1000px) {
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.32fr) minmax(0, 0.78fr);
    gap: clamp(32px, 5vw, 72px);
  }

  .page-about .about-hero__media .sk-figure__media {
    aspect-ratio: 4 / 5;
  }
}

/* ---------- 02 坐标三层 ---------- */
.page-about .about-anchor__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(24px, 3.6vw, 40px);
  background: var(--sk-line-soft);
  border: 1px solid var(--sk-line);
}

.page-about .about-anchor__item {
  position: relative;
  background: var(--sk-deep);
  padding: var(--about-cell-pad);
  transition: background var(--sk-t);
}

.page-about .about-anchor__item::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--sk-line);
  transition: background var(--sk-t);
}

.page-about .about-anchor__item:hover,
.page-about .about-anchor__item:focus-visible {
  background: var(--sk-deck);
  outline: none;
}

.page-about .about-anchor__item:hover::before,
.page-about .about-anchor__item:focus-visible::before {
  background: linear-gradient(90deg, var(--sk-purple), var(--sk-cyan));
}

.page-about .about-anchor__item:focus-visible {
  outline: 2px solid var(--sk-cyan);
  outline-offset: -2px;
}

.page-about .about-anchor__no {
  font-family: var(--sk-font-mono);
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--sk-purple);
  margin: 0 0 16px;
}

.page-about .about-anchor__item p:last-child {
  margin-bottom: 0;
  color: var(--sk-mute);
  font-size: 14px;
  line-height: 1.75;
}

@media (min-width: 780px) {
  .page-about .about-anchor__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 03 版本时间轴 ---------- */
.page-about .about-tl {
  position: relative;
  display: grid;
  gap: 0;
  margin: clamp(26px, 4vw, 44px) 0 0 6px;
  padding-left: var(--about-ln-pad);
  border-left: 1px solid var(--sk-line);
}

.page-about .about-tl__node {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: clamp(22px, 3vw, 34px) 0;
  border-top: 1px solid var(--sk-line-soft);
}

.page-about .about-tl__node::before {
  content: "";
  position: absolute;
  top: clamp(26px, 3.4vw, 40px);
  left: calc(-1 * var(--about-ln-pad) - 4px);
  width: 7px;
  height: 7px;
  border: 1px solid var(--sk-cyan);
  background: var(--sk-deep);
  border-radius: 50%;
  transition: background var(--sk-t), box-shadow var(--sk-t);
}

.page-about .about-tl__node:hover::before,
.page-about .about-tl__node:focus-within::before {
  background: var(--sk-cyan);
  box-shadow: 0 0 0 4px var(--sk-cyan-soft);
}

.page-about .about-tl__marker {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-tl__ver {
  font-family: var(--sk-font-mono);
  font-size: clamp(26px, 3.6vw, 36px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: .01em;
  color: var(--sk-cyan);
  transition: color var(--sk-t);
}

.page-about .about-tl__node:hover .about-tl__ver {
  color: var(--sk-max);
}

.page-about .about-tl__tag {
  font-family: var(--sk-font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--sk-mute);
}

.page-about .about-tl__body p {
  margin: 0;
  color: var(--sk-mute);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-about .about-tl__break {
  margin: clamp(26px, 4vw, 44px) 0;
  padding: 0;
}

.page-about .about-tl__break .sk-figure__media {
  aspect-ratio: 8 / 3;
}

.page-about .about-tl__foot {
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--sk-line-soft);
  font-size: 13.5px;
  color: var(--sk-mute);
  line-height: 1.75;
}

.page-about .about-tl__footlink,
.page-about .about-partners__link {
  color: var(--sk-cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--sk-cyan-soft);
  transition: border-color var(--sk-t), color var(--sk-t);
}

.page-about .about-tl__footlink:hover,
.page-about .about-partners__link:hover {
  color: var(--sk-max);
  border-bottom-color: var(--sk-cyan);
}

@media (min-width: 820px) {
  .page-about .about-tl__node {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: clamp(20px, 3vw, 40px);
    align-items: start;
  }

  .page-about .about-tl__marker {
    flex-direction: column;
    gap: 7px;
  }
}

/* ---------- 04 团队与流程 ---------- */
.page-about .about-team__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-about .about-team__media {
  margin: 0;
}

.page-about .about-team__bars {
  list-style: none;
  margin: clamp(22px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  gap: 16px;
}

.page-about .about-team__bar {
  display: grid;
  gap: 8px;
}

.page-about .about-team__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  font-size: 13.5px;
  color: var(--sk-white);
}

.page-about .about-team__head b {
  font-family: var(--sk-font-mono);
  font-weight: 700;
  font-size: 14px;
  color: var(--sk-cyan);
}

.page-about .about-team__track {
  position: relative;
  display: block;
  height: 10px;
  background: var(--sk-panel);
  border: 1px solid var(--sk-line);
  overflow: hidden;
}

.page-about .about-team__fill {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--sk-purple), var(--sk-cyan));
  transition: filter var(--sk-t);
}

.page-about .about-team__bar:hover .about-team__fill {
  filter: brightness(1.3);
}

.page-about .about-flow {
  list-style: none;
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--sk-line-soft);
  border: 1px solid var(--sk-line);
}

.page-about .about-flow__step {
  position: relative;
  background: var(--sk-deep);
  padding: var(--about-cell-pad);
  transition: background var(--sk-t);
}

.page-about .about-flow__step:hover,
.page-about .about-flow__step:focus-visible {
  background: var(--sk-deck);
  outline: none;
}

.page-about .about-flow__step:focus-visible {
  outline: 2px solid var(--sk-cyan);
  outline-offset: -2px;
}

.page-about .about-flow__no {
  font-family: var(--sk-font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--sk-purple);
  margin: 0 0 12px;
  text-transform: uppercase;
}

.page-about .about-flow__step p:last-of-type {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--sk-mute);
}

.page-about .about-flow__arrow {
  display: none;
}

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

  .page-about .about-flow__arrow {
    display: block;
    position: absolute;
    top: 50%;
    right: 0;
    transform: translate(50%, -50%);
    z-index: 2;
    color: var(--sk-cyan);
    background: var(--sk-deep);
    padding: 3px 0;
    line-height: 0;
  }
}

@media (min-width: 940px) {
  .page-about .about-team__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: clamp(32px, 4.5vw, 60px);
  }
}

/* ---------- 05 数据质量 ---------- */
.page-about .about-gate {
  list-style: none;
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-about .about-gate__item {
  position: relative;
  background: var(--sk-deck);
  border: 1px solid var(--sk-line);
  border-left: 3px solid var(--sk-purple);
  padding: var(--about-cell-pad);
  transition: transform var(--sk-t), border-top-color var(--sk-t), border-right-color var(--sk-t), border-bottom-color var(--sk-t);
}

.page-about .about-gate__item:nth-child(2) {
  border-left-color: var(--sk-cyan);
}

.page-about .about-gate__item:nth-child(3) {
  border-left-color: var(--sk-orange);
}

.page-about .about-gate__item:hover {
  transform: translateY(-2px);
  border-top-color: var(--sk-cyan);
  border-right-color: var(--sk-cyan);
  border-bottom-color: var(--sk-cyan);
}

.page-about .about-gate__no {
  font-family: var(--sk-font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--sk-mute);
  margin: 0 0 12px;
  text-transform: uppercase;
}

.page-about .about-gate__item p:last-child {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--sk-mute);
}

.page-about .about-quality__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 3.6vw, 40px);
  background: var(--sk-line-soft);
  border: 1px solid var(--sk-line);
}

.page-about .about-quality__stat {
  background: var(--sk-deep);
  padding: 18px 16px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-about .about-quality__fig {
  font-family: var(--sk-font-mono);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 25px);
  line-height: 1;
  color: var(--sk-cyan);
  letter-spacing: -.01em;
}

.page-about .about-quality__stat span:last-child {
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--sk-mute);
}

@media (min-width: 780px) {
  .page-about .about-gate {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

/* ---------- 06 合作生态 ---------- */
.page-about .about-partners__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  align-items: center;
}

.page-about .about-partners__intro p:last-of-type {
  margin-bottom: 0;
}

.page-about .about-partners__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--sk-line-soft);
  border: 1px solid var(--sk-line);
}

.page-about .about-partners__item {
  background: var(--sk-deep);
  display: grid;
  grid-template-columns: 76px minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 16px 18px;
  transition: background var(--sk-t);
}

.page-about .about-partners__item:hover {
  background: var(--sk-deck);
}

.page-about .about-partners__num {
  font-family: var(--sk-font-mono);
  font-size: clamp(25px, 3.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--sk-white);
  text-align: right;
  letter-spacing: -.02em;
}

.page-about .about-partners__txt {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--sk-mute);
}

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    gap: clamp(36px, 5vw, 68px);
  }
}

/* ---------- 07 服务范围 ---------- */
.page-about .about-reach__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(24px, 3.6vw, 40px);
  background: var(--sk-line-soft);
  border: 1px solid var(--sk-line);
}

.page-about .about-reach__cell {
  background: var(--sk-deep);
  padding: var(--about-cell-pad);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background var(--sk-t);
}

.page-about .about-reach__cell:hover {
  background: var(--sk-deck);
}

.page-about .about-reach__key {
  font-family: var(--sk-font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--sk-mute);
  margin: 0;
}

.page-about .about-reach__val {
  font-family: var(--sk-font-mono);
  font-size: clamp(28px, 4vw, 40px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--sk-cyan);
  margin: 0;
}

.page-about .about-reach__desc {
  font-size: 12.5px;
  line-height: 1.68;
  color: var(--sk-mute);
  margin: 0;
}

@media (min-width: 820px) {
  .page-about .about-reach__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 08 使用场景 ---------- */
.page-about .about-scene__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(24px, 3.6vw, 40px);
}

.page-about .about-scene__card {
  display: flex;
  flex-direction: column;
  gap: 14px;
  background: linear-gradient(180deg, var(--sk-deck) 0%, var(--sk-deep) 100%);
  border: 1px solid var(--sk-line);
  padding: var(--about-cell-pad);
  transition: border-color var(--sk-t), transform var(--sk-t);
}

.page-about .about-scene__card:hover {
  border-color: var(--sk-cyan);
  transform: translateY(-2px);
}

.page-about .about-scene__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--sk-mute);
}

.page-about .about-scene__list li {
  position: relative;
  padding-left: 16px;
}

.page-about .about-scene__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 1px;
  background: var(--sk-cyan);
}

.page-about .about-scene__link {
  margin-top: auto;
  align-self: flex-start;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--sk-cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--sk-t), border-color var(--sk-t);
}

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

@media (min-width: 860px) {
  .page-about .about-scene__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 09 页尾收束带 ---------- */
.page-about .about-close__band {
  display: flex;
  flex-direction: column;
  gap: 20px;
  border: 1px solid var(--sk-line);
  border-left: 3px solid var(--sk-purple);
  background:
    linear-gradient(135deg, rgba(110, 75, 255, .18), rgba(47, 216, 228, .07) 58%, transparent 100%),
    var(--sk-deck);
  padding: clamp(24px, 3.6vw, 44px);
}

.page-about .about-close__slogan {
  font-family: var(--sk-font-head);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.15;
  letter-spacing: .01em;
  color: var(--sk-white);
  margin: 0;
}

.page-about .about-close__meta {
  font-family: var(--sk-font-mono);
  font-size: 12.5px;
  letter-spacing: .02em;
  line-height: 1.7;
  color: var(--sk-mute);
  margin: 10px 0 0;
}

.page-about .about-close__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  flex-shrink: 0;
}

@media (min-width: 820px) {
  .page-about .about-close__band {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 36px;
  }
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 420px) {
  .page-about .about-hero__facts {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .page-about .about-partners__item {
    grid-template-columns: 60px minmax(0, 1fr);
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}
</main>