/* =========================================================
   品牌与团队页 · page-about
   ========================================================= */

.page-about {
  background: var(--cream);
  color: var(--seed);
  overflow-x: hidden;
}

.page-about .about-breadcrumb {
  padding: calc(var(--header-h) + 20px) 0 0;
}

/* ---------- 首屏 ---------- */

.page-about .about-hero {
  padding: 26px 0 64px;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 36px;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(2.35rem, 8.2vw, 5rem);
  line-height: 1.03;
  letter-spacing: -0.035em;
  font-weight: 800;
  max-width: 15ch;
}

.page-about .about-hero__title em {
  font-style: normal;
  display: inline;
  color: var(--leaf);
  background-image: linear-gradient(transparent 62%, var(--fluoro) 62%, var(--fluoro) 92%, transparent 92%);
  background-repeat: no-repeat;
  background-size: 100% 100%;
}

.page-about .about-hero__side .lede {
  margin: 0;
  max-width: 46ch;
}

.page-about .about-facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--stroke);
}

.page-about .about-facts__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--stroke);
  font-size: 0.875rem;
}

.page-about .about-facts__k {
  color: var(--moss);
  letter-spacing: 0.06em;
}

.page-about .about-facts__v {
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.01em;
  text-align: right;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 88px;
  }
  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 72px;
    align-items: center;
  }
}

/* ---------- 通用章节标题 ---------- */

.page-about .eyebrow--dark {
  color: var(--leaf);
}

.page-about .eyebrow--light {
  color: var(--fluoro);
}

.page-about .about-head {
  max-width: 720px;
}

.page-about .about-h2 {
  margin: 12px 0 0;
  font-size: clamp(1.65rem, 4.6vw, 2.7rem);
  line-height: 1.16;
  letter-spacing: -0.025em;
  font-weight: 800;
}

.page-about .about-h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.page-about .about-sub {
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.8;
  color: #3c4a3c;
  max-width: 60ch;
}

.page-about .about-inline-link {
  color: var(--leaf);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 2px solid var(--fluoro);
  padding-bottom: 1px;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-about .about-inline-link:hover {
  color: var(--seed);
  border-bottom-color: var(--kiwi);
}

.page-about .media-frame {
  margin: 0;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: var(--stroke);
  display: block;
}

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

/* ---------- 团队结构 ---------- */

.page-about .about-team__layout {
  display: grid;
  gap: 28px;
  margin-top: 44px;
}

.page-about .about-team__body p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.85;
  color: #3c4a3c;
}

.page-about .about-team__media {
  aspect-ratio: 4 / 3;
}

@media (min-width: 900px) {
  .page-about .about-team__layout {
    grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
    gap: 52px;
    align-items: center;
  }
}

/* 人数分工条带 */

.page-about .headcount {
  margin-top: 56px;
}

.page-about .headcount__bar {
  display: flex;
  height: 52px;
  gap: 3px;
  border-radius: var(--radius-pill);
  overflow: hidden;
  background: var(--stroke);
}

.page-about .headcount__seg {
  display: block;
  min-width: 0;
}

.page-about .headcount__seg--tech {
  flex: 41;
  background: var(--kiwi);
}

.page-about .headcount__seg--ops {
  flex: 19;
  background: var(--leaf);
}

.page-about .headcount__seg--cs {
  flex: 8;
  background: var(--ice);
}

.page-about .headcount__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  gap: 22px;
}

.page-about .headcount__row {
  padding-top: 18px;
  border-top: 2px solid var(--stroke);
  transition: border-color 0.2s var(--ease);
}

.page-about .headcount__row:hover {
  border-top-color: var(--fluoro);
}

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

.page-about .headcount__dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.page-about .headcount__dot--tech {
  background: var(--kiwi);
}

.page-about .headcount__dot--ops {
  background: var(--leaf);
}

.page-about .headcount__dot--cs {
  background: var(--ice);
}

.page-about .headcount__num {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.02em;
}

.page-about .headcount__role {
  font-size: 0.95rem;
  font-weight: 700;
}

.page-about .headcount__desc {
  margin: 10px 0 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: #3c4a3c;
}

@media (min-width: 720px) {
  .page-about .headcount__bar {
    height: 70px;
  }
}

@media (min-width: 880px) {
  .page-about .headcount__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
  }
}

/* ---------- 时间轴 ---------- */

.page-about .timeline {
  list-style: none;
  margin: 48px 0 0;
  padding: 0 0 0 34px;
  position: relative;
  display: grid;
  gap: 20px;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--kiwi), var(--fluoro) 68%, var(--orange));
}

.page-about .timeline__item {
  position: relative;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: -34px;
  top: 20px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--fluoro);
  border: 3px solid var(--cream);
  box-shadow: 0 0 0 2px var(--kiwi);
  z-index: 1;
}

.page-about .tl {
  border: 1px solid var(--stroke);
  border-radius: var(--radius-md);
  background: #ffffff;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .tl:hover {
  border-color: var(--fluoro);
}

.page-about .tl[open] {
  border-color: var(--kiwi);
  box-shadow: 0 18px 40px -34px rgba(20, 24, 26, 0.5);
}

.page-about .tl__summary {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-about .tl__year {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--leaf);
}

.page-about .tl__title {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.4;
}

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

.page-about .tl__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.85;
  color: #3c4a3c;
}

@media (min-width: 760px) {
  .page-about .timeline {
    padding-left: 46px;
    gap: 24px;
  }
  .page-about .timeline::before {
    left: 9px;
  }
  .page-about .timeline__item::before {
    left: -46px;
    top: 24px;
  }
  .page-about .tl__summary {
    grid-template-columns: 152px minmax(0, 1fr);
    align-items: baseline;
    gap: 24px;
    padding: 24px 28px;
  }
  .page-about .tl__body {
    padding: 0 28px 26px 204px;
  }
}

/* ---------- 内容节奏 ---------- */

.page-about .about-editorial__grid {
  display: grid;
  gap: 40px;
}

.page-about .about-editorial__intro p {
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: #3c4a3c;
  max-width: 46ch;
}

.page-about .rhythm {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
}

.page-about .rhythm__item {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 2px 16px;
  padding: 24px 0;
  border-top: 1px solid var(--stroke);
  transition: border-top-color 0.2s var(--ease);
}

.page-about .rhythm__item:last-child {
  border-bottom: 1px solid var(--stroke);
}

.page-about .rhythm__item:hover {
  border-top-color: var(--fluoro);
}

.page-about .rhythm__num {
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--kiwi);
}

.page-about .rhythm__title {
  grid-row: 1;
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
}

.page-about .rhythm__text {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: #3c4a3c;
}

@media (min-width: 900px) {
  .page-about .about-editorial__grid {
    grid-template-columns: minmax(0, 0.88fr) minmax(0, 1.12fr);
    gap: 72px;
    align-items: start;
  }
}

/* ---------- 数据校准（深色面板） ---------- */

.page-about .about-data__panel {
  display: grid;
  gap: 34px;
  padding: 40px 24px;
  border-radius: var(--radius-lg);
  background: var(--seed);
  color: var(--cream);
  position: relative;
  overflow: hidden;
}

.page-about .about-data__panel::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -120px;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 255, 61, 0.18), transparent 68%);
  pointer-events: none;
}

.page-about .about-data__text {
  position: relative;
  z-index: 1;
}

.page-about .about-data__text .about-h2 {
  color: var(--cream);
}

.page-about .about-data__text p {
  margin: 18px 0 0;
  font-size: 0.98rem;
  line-height: 1.85;
  color: rgba(243, 247, 233, 0.78);
}

.page-about .about-data__media {
  aspect-ratio: 12 / 7;
  border-radius: var(--radius-md);
  position: relative;
  z-index: 1;
}

@media (min-width: 900px) {
  .page-about .about-data__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 60px;
    align-items: center;
    padding: 72px 64px;
  }
  .page-about .about-data__panel::after {
    right: -80px;
    top: -160px;
    width: 460px;
    height: 460px;
  }
}

/* ---------- 服务承诺 ---------- */

.page-about .about-service__grid {
  display: grid;
  gap: 36px;
  margin-top: 44px;
}

.page-about .promise {
  padding: 34px 28px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--kiwi), var(--leaf));
  color: #ffffff;
}

.page-about .promise__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(3rem, 11vw, 4.6rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.page-about .promise__num span {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  margin-left: 8px;
}

.page-about .promise__label {
  margin: 16px 0 0;
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.86);
}

.page-about .service-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 26px;
}

.page-about .service-list__item {
  padding-left: 20px;
  border-left: 3px solid var(--stroke);
  transition: border-left-color 0.2s var(--ease);
}

.page-about .service-list__item:hover {
  border-left-color: var(--fluoro);
}

.page-about .service-list__title {
  margin: 0;
  font-size: 1.02rem;
  font-weight: 800;
}

.page-about .service-list__text {
  margin: 8px 0 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: #3c4a3c;
}

.page-about .about-service__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 42px;
}

@media (min-width: 900px) {
  .page-about .about-service__grid {
    grid-template-columns: minmax(0, 0.72fr) minmax(0, 1.28fr);
    gap: 60px;
    align-items: start;
  }
  .page-about .promise {
    padding: 44px 36px;
  }
}

/* ---------- 合作伙伴 ---------- */

.page-about .about-partners__grid {
  display: grid;
  gap: 34px;
}

.page-about .about-partners__media {
  aspect-ratio: 4 / 3;
}

.page-about .about-partners__text p {
  margin: 18px 0 0;
  font-size: 1rem;
  line-height: 1.85;
  color: #3c4a3c;
  max-width: 52ch;
}

.page-about .coop-list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
}

.page-about .coop-list__item {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--stroke);
}

.page-about .coop-list__item:first-child {
  border-top: 1px solid var(--stroke);
}

.page-about .coop-list__k {
  font-size: 0.98rem;
  font-weight: 800;
}

.page-about .coop-list__v {
  font-size: 0.9rem;
  line-height: 1.78;
  color: #3c4a3c;
}

.page-about .about-partners__btn {
  margin-top: 32px;
}

@media (min-width: 640px) {
  .page-about .coop-list__item {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 22px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-about .about-partners__grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1.18fr);
    gap: 64px;
    align-items: center;
  }
}

/* ---------- 滚动显现 ---------- */

.page-about [data-reveal] {
  transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

.page-about.js-ready .page-about [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
}

.page-about.js-ready .page-about [data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  .page-about [data-reveal] {
    transition: none;
  }
  .page-about.js-ready .page-about [data-reveal] {
    opacity: 1;
    transform: none;
  }
}