/* ===== 品牌档案 · /company/ ===== */

.page-about {
  --about-rail: 26px;
  --about-dot: 13px;
  --about-track: rgba(51, 70, 92, 0.34);
  --about-soft: rgba(122, 17, 34, 0.11);
  display: block;
  background: var(--paper);
  color: var(--graphite);
  padding-bottom: clamp(56px, 9vw, 128px);
}

.page-about .container {
  max-width: var(--wide);
}

/* --- 面包屑 --- */
.page-about .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* --- 首屏 --- */
.page-about .about-hero {
  padding-top: clamp(20px, 3vw, 40px);
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 5vw, 56px);
  padding-bottom: clamp(30px, 4vw, 52px);
}

.page-about .about-hero h1 {
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(34px, 7vw, 76px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin: 10px 0 0.55em;
}

.page-about .about-hero__intro {
  font-size: clamp(16px, 1.1vw, 18px);
  line-height: 1.85;
  color: var(--graphite);
  max-width: 60ch;
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-about .about-hero__figures {
  display: grid;
  grid-template-columns: 1fr;
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-hero__figure {
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero__figure dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--readable-mist);
  margin-bottom: 8px;
}

.page-about .about-hero__figure dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-about .about-hero__figures .data-figure {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(32px, 4.4vw, 48px);
  line-height: 1;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.page-about .about-unit {
  font-size: 13px;
  color: var(--readable-mist);
  letter-spacing: 0.06em;
}

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

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

/* --- 纵向时间线 --- */
.page-about .about-timeline-section {
  padding-top: clamp(44px, 7vw, 96px);
}

.page-about .about-timeline {
  position: relative;
  list-style: none;
  margin: 0;
  padding: 0 0 0 var(--about-rail);
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  top: 10px;
  bottom: 10px;
  left: 6px;
  width: 1px;
  background: var(--about-track);
}

.page-about .about-node {
  position: relative;
  padding-bottom: clamp(52px, 7vw, 104px);
}

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

.page-about .about-node::before {
  content: "";
  position: absolute;
  top: 8px;
  left: calc(-1 * var(--about-rail));
  width: var(--about-dot);
  height: var(--about-dot);
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 5px var(--paper);
  z-index: 2;
}

.page-about .about-node__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2.5vw, 28px);
}

.page-about .about-node__aside {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: 0.06em;
  color: var(--readable-mist);
  padding-top: 6px;
}

.page-about .about-node__aside strong {
  display: block;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--shaba);
  margin-bottom: 3px;
}

.page-about .about-node__title {
  position: relative;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.28;
  color: var(--ink);
  margin: 0 0 22px;
  padding-bottom: 14px;
}

.page-about .about-node__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 44px;
  height: 4px;
  background: var(--shaba);
}

.page-about .about-node__body p {
  margin: 0 0 1.1em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 68ch;
}

.page-about .about-node__body p:last-child {
  margin-bottom: 0;
}

.page-about .about-node__media {
  margin: clamp(20px, 3vw, 32px) 0 0;
}

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

/* --- 团队分工 --- */
.page-about .about-crew {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-crew__item {
  position: relative;
  overflow: hidden;
  padding: 22px 20px 26px;
  background: var(--khaki);
  border-top: 3px solid var(--shaba);
  transition: transform 200ms var(--ease);
}

.page-about .about-crew__item:nth-child(1) { border-radius: 0 30px 0 0; }
.page-about .about-crew__item:nth-child(2) { border-radius: 30px 0 0 0; }
.page-about .about-crew__item:nth-child(3) { border-radius: 0 0 0 30px; }
.page-about .about-crew__item:nth-child(4) { border-radius: 0 0 30px 0; }

.page-about .about-crew__item:hover,
.page-about .about-crew__item:focus-within {
  transform: translateY(-2px);
}

.page-about .about-crew__num {
  position: absolute;
  right: 14px;
  bottom: -8px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(46px, 6.5vw, 68px);
  line-height: 1;
  color: var(--about-soft);
  pointer-events: none;
  user-select: none;
  transition: color 200ms var(--ease);
}

.page-about .about-crew__item:hover .about-crew__num,
.page-about .about-crew__item:focus-within .about-crew__num {
  color: rgba(122, 17, 34, 0.24);
}

.page-about .about-crew__role {
  position: relative;
  z-index: 1;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 19px;
  color: var(--ink);
  margin: 0 0 4px;
}

.page-about .about-crew__count {
  position: relative;
  z-index: 1;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--shaba);
  margin: 0 0 12px;
}

.page-about .about-crew__desc {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--readable-mist);
  max-width: 34ch;
}

/* --- 90 分钟节拍 --- */
.page-about .about-flow {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  margin-top: clamp(20px, 3vw, 30px);
}

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

.page-about .about-clock__item {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 16px 0 18px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-clock__time {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.01em;
  color: var(--shaba);
  white-space: nowrap;
}

.page-about .about-clock__label {
  display: block;
  font-weight: 700;
  font-size: 16px;
  color: var(--ink);
  margin-bottom: 4px;
}

.page-about .about-clock__desc {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--readable-mist);
}

.page-about .about-flow__media {
  margin: 0;
  max-width: 340px;
}

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

/* --- 协作网络 --- */
.page-about .about-network {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-about .about-orbit {
  display: block;
  width: 100%;
  max-width: 360px;
  height: auto;
  margin: 0 auto;
}

.page-about .about-orbit__ring {
  fill: none;
  stroke: var(--slate);
  stroke-opacity: 0.24;
  stroke-width: 1;
}

.page-about .about-orbit__ring--inner {
  stroke-dasharray: 3 6;
}

.page-about .about-orbit__hub {
  fill: var(--shaba);
}

.page-about .about-orbit__hubtext {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.1em;
  fill: var(--paper);
}

.page-about .about-orbit__node {
  fill: var(--slate);
  fill-opacity: 0.8;
  transition: fill 180ms var(--ease), fill-opacity 180ms var(--ease);
}

.page-about .about-orbit__node--inner {
  fill: var(--amber);
  fill-opacity: 0.85;
}

.page-about .about-orbit__node:hover {
  fill: var(--shaba);
  fill-opacity: 1;
}

.page-about .about-network__hint {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--readable-mist);
  max-width: 46ch;
}

.page-about .about-network__list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-about .about-network__list li {
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.75;
  color: var(--readable-mist);
}

.page-about .about-network__list strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--shaba);
  margin-right: 8px;
}

/* --- 版本迭代 --- */
.page-about .about-versions {
  margin-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.page-about .about-version {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 20px 0 22px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-version__year {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.01em;
  color: var(--shaba);
}

.page-about .about-version__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 17px;
  color: var(--ink);
  margin: 0 0 6px;
}

.page-about .about-version__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--readable-mist);
  max-width: 62ch;
}

/* --- 三条长期做法 --- */
.page-about .about-tenets {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
}

.page-about .about-tenets__item {
  padding: 20px 0 24px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-tenets__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.08em;
  color: var(--shaba);
  margin-bottom: 10px;
}

.page-about .about-tenets__title {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: 18px;
  color: var(--ink);
  margin: 0 0 8px;
}

.page-about .about-tenets__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--readable-mist);
  max-width: 40ch;
}

/* --- 收束 --- */
.page-about .about-close {
  margin-top: clamp(48px, 7vw, 96px);
  padding-top: clamp(30px, 4vw, 52px);
  border-top: 1px solid var(--line-strong);
}

.page-about .about-close__lead {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(24px, 4vw, 42px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
  max-width: 22ch;
  margin: 0 0 20px;
}

.page-about .about-close__text {
  font-size: 17px;
  line-height: 1.85;
  color: var(--graphite);
  max-width: 62ch;
  margin: 0 0 28px;
}

.page-about .about-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== 响应式 ===== */
@media (min-width: 560px) {
  .page-about .about-hero__figures {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(12px, 2vw, 28px);
  }

  .page-about .about-clock__item {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 680px) {
  .page-about .about-crew {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-about .about-version {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 28px;
  }
}

@media (min-width: 820px) {
  .page-about .about-network {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  }

  .page-about .about-tenets {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(20px, 3vw, 40px);
  }
}

@media (min-width: 880px) {
  .page-about .about-node__inner {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: clamp(24px, 3.5vw, 56px);
  }

  .page-about .about-node__aside {
    padding-top: 10px;
  }
}

@media (min-width: 1000px) {
  .page-about {
    --about-rail: 34px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
    gap: clamp(32px, 4vw, 72px);
  }

  .page-about .about-hero__figures {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1180px) {
  .page-about .about-flow {
    grid-template-columns: minmax(0, 1fr) 240px;
    align-items: start;
  }

  .page-about .about-flow__media {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .about-crew__item,
  .page-about .about-crew__num,
  .page-about .about-orbit__node {
    transition: none;
  }

  .page-about .about-crew__item:hover,
  .page-about .about-crew__item:focus-within {
    transform: none;
  }
}