/* =========================================================
   品牌介绍页 / page-about
   ========================================================= */

.page-about {
  background: var(--pine);
  color: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding-block: 20px 4px;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  padding: 26px 0 52px;
}

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

.page-about .about-hero__eyebrow {
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  margin: 0;
  text-transform: uppercase;
}

.page-about .about-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.3rem, 9vw, 5.2rem);
  line-height: .99;
  letter-spacing: -.02em;
  margin: 14px 0 20px;
  color: var(--paper);
}

.page-about .about-hero__hl {
  color: var(--orange);
}

.page-about .about-hero__lede {
  margin: 0;
  max-width: 46ch;
  color: var(--silver);
  font-size: clamp(1rem, 2.6vw, 1.12rem);
  line-height: 1.88;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* 首屏数据板 */
.page-about .about-board {
  background: linear-gradient(165deg, var(--pine-2) 0%, var(--pine) 78%);
  border: 1px solid rgba(200, 211, 206, .26);
  box-shadow: var(--shadow-panel);
  padding: 22px 20px 18px;
  transition: border-color var(--speed), box-shadow var(--speed);
}

.page-about .about-board:hover {
  border-color: rgba(255, 122, 26, .55);
  box-shadow: 12px 12px 0 rgba(10, 15, 14, .45);
}

.page-about .about-board__top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(200, 211, 206, .22);
}

.page-about .about-board__label {
  color: var(--gray);
  font-size: 12px;
  letter-spacing: .22em;
}

.page-about .about-board__ver {
  color: var(--yellow);
  font-size: 13px;
}

.page-about .about-board__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-board__item {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed rgba(200, 211, 206, .18);
}

.page-about .about-board__item:last-child {
  border-bottom: 0;
  padding-bottom: 6px;
}

.page-about .about-board__key {
  color: var(--gray);
  font-size: .85rem;
  line-height: 1.5;
}

.page-about .about-board__val {
  color: var(--paper);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
}

.page-about .about-board__val i {
  font-style: normal;
  font-size: .72rem;
  font-weight: 400;
  color: var(--gray);
  margin-left: 4px;
}

.page-about .about-board__spark {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 14px;
}

/* ---------- 通用章节头部 ---------- */
.page-about .about-sect {
  padding: 52px 0;
}

.page-about .about-sect__head {
  margin-bottom: 30px;
}

.page-about .about-sect__index {
  display: inline-block;
  color: var(--orange);
  border: 1px solid rgba(255, 122, 26, .5);
  font-size: 12px;
  letter-spacing: .2em;
  padding: 3px 9px;
}

.page-about .about-sect__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 5.2vw, 2.9rem);
  line-height: 1.06;
  letter-spacing: -.01em;
  margin: 16px 0 10px;
  color: var(--paper);
}

.page-about .about-sect__note {
  margin: 0;
  max-width: 60ch;
  color: var(--gray);
  line-height: 1.82;
}

/* ---------- 发展历程 ---------- */
.page-about .about-line__media {
  margin: 0 0 36px;
}

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

.page-about .about-timeline__node {
  position: relative;
  padding: 0 0 26px 28px;
  border-left: 1px solid rgba(200, 211, 206, .22);
  border-top: 0;
}

.page-about .about-timeline__node:last-child {
  padding-bottom: 0;
  border-left-color: rgba(255, 122, 26, .45);
}

.page-about .about-timeline__node::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 5px;
  width: 9px;
  height: 9px;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 0 4px rgba(255, 122, 26, .14);
  transition: transform var(--speed), background var(--speed);
}

.page-about .about-timeline__node:hover::before {
  background: var(--blue);
  transform: scale(1.5);
}

.page-about .about-timeline__stage {
  display: block;
  color: var(--yellow);
  font-size: 11px;
  letter-spacing: .14em;
}

.page-about .about-timeline__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.14rem;
  color: var(--paper);
  margin: 7px 0 8px;
  line-height: 1.25;
}

.page-about .about-timeline__text {
  margin: 0;
  color: var(--silver);
  font-size: .92rem;
  line-height: 1.78;
}

.page-about .about-timeline__more {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 2px solid rgba(255, 122, 26, .32);
  color: var(--gray);
  font-size: .82rem;
  line-height: 1.7;
  opacity: .72;
  transition: opacity var(--speed), border-color var(--speed);
}

.page-about .about-timeline__node:hover .about-timeline__more {
  opacity: 1;
  border-left-color: var(--orange);
}

/* ---------- 数据板块（纸白画板） ---------- */
.page-about .about-slab {
  background: var(--paper);
  color: var(--ink);
  border-top: 4px solid var(--orange);
  border-bottom: 4px solid var(--pine-3);
  padding: 52px 0 56px;
}

.page-about .about-slab .about-sect__title {
  color: var(--ink);
}

.page-about .about-slab .about-sect__note {
  color: #55635f;
}

.page-about .about-data__body {
  display: grid;
  gap: 26px;
}

.page-about .about-data__copy p {
  margin: 0;
  color: #35423e;
  line-height: 1.88;
}

.page-about .about-data__dims {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 9px 22px;
}

.page-about .about-data__dims li {
  position: relative;
  padding-left: 16px;
  font-size: .9rem;
  line-height: 1.7;
  color: #35423e;
}

.page-about .about-data__dims li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 7px;
  height: 7px;
  background: var(--turf);
}

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

.page-about .about-data__stats {
  list-style: none;
  margin: 38px 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--silver);
  border: 1px solid var(--silver);
}

.page-about .about-data__stat {
  background: var(--paper);
  padding: 20px 16px 18px;
  transition: background var(--speed);
}

.page-about .about-data__stat:hover {
  background: #fffdf8;
}

.page-about .about-data__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 6.4vw, 2.5rem);
  font-weight: 700;
  line-height: 1;
  color: var(--pine);
}

.page-about .about-data__num--data {
  color: var(--blue);
}

.page-about .about-data__label {
  display: block;
  margin-top: 10px;
  font-size: .82rem;
  line-height: 1.65;
  color: #5d6b66;
}

/* ---------- 团队 ---------- */
.page-about .about-team__grid {
  display: grid;
  gap: 28px;
}

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

.page-about .about-team__copy p {
  margin: 0;
  color: var(--silver);
  line-height: 1.88;
}

.page-about .about-team__stats {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: rgba(200, 211, 206, .2);
  border: 1px solid rgba(200, 211, 206, .2);
}

.page-about .about-team__stats li {
  background: var(--pine);
  padding: 16px 14px;
  transition: background var(--speed);
}

.page-about .about-team__stats li:hover {
  background: var(--pine-3);
}

.page-about .about-team__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
  transition: transform var(--speed);
}

.page-about .about-team__stats li:hover .about-team__num {
  transform: translateY(-2px);
}

.page-about .about-team__cap {
  display: block;
  margin-top: 8px;
  font-size: .8rem;
  color: var(--gray);
  line-height: 1.55;
}

.page-about .about-team__rhythm {
  display: grid;
  gap: 14px;
  margin-top: 30px;
}

.page-about .about-rhythm {
  background: var(--pine-2);
  border: 1px solid rgba(200, 211, 206, .22);
  border-left: 4px solid var(--orange);
  padding: 22px 20px;
  transition: border-color var(--speed), background var(--speed);
}

.page-about .about-rhythm--focus {
  border-left-color: var(--blue);
}

.page-about .about-rhythm:hover {
  background: var(--pine-3);
}

.page-about .about-rhythm__tag {
  display: block;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gray);
  margin-bottom: 12px;
}

.page-about .about-rhythm__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(2.1rem, 8vw, 3rem);
  font-weight: 700;
  line-height: 1;
  color: var(--paper);
}

.page-about .about-rhythm__num i {
  font-style: normal;
  font-size: .9rem;
  font-weight: 400;
  color: var(--gray);
  margin-left: 6px;
}

.page-about .about-rhythm__text {
  margin: 12px 0 0;
  color: var(--silver);
  font-size: .9rem;
  line-height: 1.78;
}

/* ---------- 长期价值 ---------- */
.page-about .about-value__grid {
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: rgba(200, 211, 206, .2);
  border: 1px solid rgba(200, 211, 206, .2);
}

.page-about .about-value__item {
  background: var(--pine);
  padding: 24px 20px 26px;
  transition: background var(--speed);
}

.page-about .about-value__item:hover {
  background: var(--pine-3);
}

.page-about .about-value__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
  border-bottom: 2px solid rgba(255, 122, 26, .4);
  padding-bottom: 3px;
}

.page-about .about-value__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.16rem;
  line-height: 1.3;
  color: var(--paper);
  margin: 16px 0 10px;
}

.page-about .about-value__text {
  margin: 0;
  color: var(--silver);
  font-size: .9rem;
  line-height: 1.8;
}

/* ---------- 结尾行动区 ---------- */
.page-about .about-cta {
  background: var(--orange);
  color: var(--ink);
  padding: 50px 0;
}

.page-about .about-cta__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: rgba(10, 15, 14, .68);
}

.page-about .about-cta__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.7rem, 5.4vw, 2.8rem);
  line-height: 1.07;
  letter-spacing: -.01em;
  margin: 0 0 14px;
  color: var(--ink);
}

.page-about .about-cta__text {
  margin: 0 0 26px;
  max-width: 58ch;
  line-height: 1.82;
  color: #33291a;
}

.page-about .about-cta__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-about .about-cta__links a {
  display: inline-block;
  padding-bottom: 3px;
  border-bottom: 2px solid rgba(10, 15, 14, .35);
  color: var(--ink);
  font-size: .95rem;
  font-weight: 700;
  text-decoration: none;
  transition: border-color var(--speed), color var(--speed);
}

.page-about .about-cta__links a:hover,
.page-about .about-cta__links a:focus-visible {
  border-bottom-color: var(--ink);
  color: #000;
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-about .about-data__dims {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-about .about-cta__links {
    grid-template-columns: repeat(2, max-content);
    gap: 12px 32px;
  }
}

@media (min-width: 720px) {
  .page-about .about-team__rhythm {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 36px 0 66px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.28fr .72fr;
    align-items: end;
    gap: 52px;
  }

  .page-about .about-hero__board {
    align-self: end;
  }

  .page-about .about-data__body {
    grid-template-columns: 1.05fr .95fr;
    align-items: center;
    gap: 46px;
  }

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

  .page-about .about-team__grid {
    grid-template-columns: 1.1fr .9fr;
    align-items: center;
    gap: 40px;
  }

  .page-about .about-timeline {
    grid-template-columns: repeat(5, 1fr);
    gap: 0 18px;
  }

  .page-about .about-timeline__node {
    padding: 32px 0 0 0;
    border-left: 0;
    border-top: 1px solid rgba(200, 211, 206, .22);
  }

  .page-about .about-timeline__node:last-child {
    border-top-color: rgba(255, 122, 26, .5);
  }

  .page-about .about-timeline__node::before {
    left: 0;
    top: -5px;
  }

  .page-about .about-value__grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (min-width: 1100px) {
  .page-about .about-value__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}