/* ==========================================================
   品牌历程 /history/ — 页面专属样式（作用域 .page-about）
   ========================================================== */

.page-about {
  --about-line: rgba(200, 162, 74, .28);
  --about-line-soft: rgba(127, 154, 144, .18);
  --about-panel: rgba(19, 46, 39, .72);
}

/* ---------- 首屏：框景结构 ---------- */
.page-about .about-hero {
  padding-top: clamp(20px, 3.4vw, 40px);
  padding-bottom: clamp(36px, 5.6vw, 74px);
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: clamp(16px, 2.6vw, 26px);
}

.page-about .about-hero__frame {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.2vw, 38px);
  padding: clamp(22px, 3.4vw, 44px);
  border: 1px solid var(--about-line);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(115% 90% at 86% 6%, rgba(56, 232, 200, .11), transparent 58%),
    radial-gradient(90% 80% at 2% 98%, rgba(230, 72, 154, .09), transparent 62%),
    linear-gradient(158deg, rgba(19, 46, 39, .94), rgba(11, 31, 26, .97));
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.page-about .about-hero__frame::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px dashed rgba(200, 162, 74, .16);
  border-radius: calc(var(--radius-xl) - 10px);
  pointer-events: none;
}

.page-about .about-hero__frame::after {
  content: "";
  position: absolute;
  top: 18px;
  bottom: 18px;
  left: 0;
  width: 5px;
  background-image: repeating-linear-gradient(180deg, var(--gold) 0 1px, transparent 1px 15px);
  opacity: .42;
  pointer-events: none;
}

.page-about .about-hero__copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-heading);
  font-size: clamp(30px, 5.6vw, 56px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -.012em;
  color: var(--paper);
}

.page-about .about-hero__copy .lede {
  margin-top: clamp(14px, 2vw, 20px);
  max-width: 46ch;
  color: rgba(232, 241, 236, .82);
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 2.8vw, 30px);
}

.page-about .about-hero__media {
  margin: 0;
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-line-soft);
  background: var(--ink-deep);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-about .about-hero__stats {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border-radius: var(--radius-lg);
  background: var(--about-line-soft);
  overflow: hidden;
}

.page-about .about-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: linear-gradient(150deg, rgba(19, 46, 39, .96), rgba(11, 31, 26, .9));
}

.page-about .about-stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .about-stat__value small {
  font-size: .5em;
  margin-left: 2px;
  color: var(--muted);
}

.page-about .about-stat__label {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
}

.page-about .timeline {
  list-style: none;
  margin: clamp(28px, 4vw, 48px) 0 0;
  padding: 0;
}

.page-about .timeline__item {
  position: relative;
  padding: 0 0 30px 32px;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--about-line), rgba(56, 232, 200, .10));
}

.page-about .timeline__item:last-child::before {
  display: none;
}

.page-about .timeline__item::after {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: var(--ink);
  border: 2px solid var(--gold);
  box-shadow: 0 0 0 4px rgba(200, 162, 74, .1);
}

.page-about .timeline__marker {
  margin-bottom: 10px;
}

.page-about .timeline__year {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .16em;
  color: var(--gold-bright);
}

.page-about .timeline__body {
  border-radius: var(--radius-lg);
  padding: clamp(18px, 2.4vw, 26px);
  transition: transform .35s ease, border-color .35s ease, box-shadow .35s ease;
}

.page-about .timeline__body .card-title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .timeline__body .card-text {
  margin: 0 0 14px;
  color: rgba(232, 241, 236, .78);
  line-height: 1.75;
}

.page-about .timeline__item:hover .timeline__body {
  transform: translateY(-3px);
  border-color: var(--gold);
  box-shadow: 0 30px 60px -42px rgba(5, 11, 9, .95);
}

.page-about .timeline__item:nth-child(even)::after {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(56, 232, 200, .1);
}

/* ---------- 内容体系 ---------- */
.page-about .about-content__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 46px);
  align-items: start;
}

.page-about .about-content__intro .section-title {
  margin-top: 12px;
}

.page-about .about-content__figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
}

.page-about .content-item {
  position: relative;
  padding: 22px 22px 22px 26px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line-soft);
  border-left: 3px solid var(--gold);
  background: linear-gradient(140deg, rgba(19, 46, 39, .92), rgba(11, 31, 26, .66));
  transition: transform .3s ease, border-color .3s ease;
}

.page-about .content-item + .content-item {
  margin-top: 16px;
}

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

.page-about .content-item:nth-child(3) {
  border-left-color: var(--magenta);
}

.page-about .content-item:nth-child(4) {
  border-left-color: var(--violet);
}

.page-about .content-item:hover {
  transform: translateX(4px);
}

.page-about .content-item__index {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--muted);
}

.page-about .content-item__title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(18px, 2vw, 21px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .content-item__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(232, 241, 236, .76);
}

/* ---------- 团队 ---------- */
.page-about .about-team__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 44px);
  align-items: start;
  margin-top: clamp(26px, 4vw, 44px);
}

.page-about .about-team__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--about-line-soft);
  background: var(--ink-deep);
}

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

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

.page-about .role {
  padding: 16px 0;
  border-bottom: 1px dashed var(--about-line-soft);
}

.page-about .role:first-child {
  padding-top: 0;
}

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

.page-about .role__head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
}

.page-about .role__name {
  font-family: var(--font-heading);
  font-size: 17px;
  font-weight: 700;
  color: var(--paper);
}

.page-about .role__count {
  font-size: 15px;
  color: var(--gold-bright);
}

.page-about .role__bar {
  height: 6px;
  margin: 10px 0 8px;
  border-radius: var(--radius-pill);
  background: rgba(127, 154, 144, .14);
  overflow: hidden;
}

.page-about .role__bar span {
  display: block;
  height: 100%;
  border-radius: var(--radius-pill);
}

.page-about .role:nth-child(1) .role__bar span {
  width: 38%;
  background: linear-gradient(90deg, var(--gold), var(--gold-bright));
}

.page-about .role:nth-child(2) .role__bar span {
  width: 27%;
  background: linear-gradient(90deg, #1f9d86, var(--cyan));
}

.page-about .role:nth-child(3) .role__bar span {
  width: 23%;
  background: linear-gradient(90deg, #a92f6f, var(--magenta));
}

.page-about .role:nth-child(4) .role__bar span {
  width: 12%;
  background: linear-gradient(90deg, #4d3ab0, var(--violet));
}

.page-about .role__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 合作伙伴 ---------- */
.page-about .partner-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-top: clamp(26px, 4vw, 42px);
}

.page-about .partner-card {
  position: relative;
  padding: clamp(20px, 2.6vw, 30px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line-soft);
  background: linear-gradient(150deg, rgba(19, 46, 39, .95), rgba(11, 31, 26, .7));
  overflow: hidden;
}

.page-about .partner-card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--gold), transparent);
}

.page-about .partner-card--b::before {
  background: linear-gradient(180deg, var(--cyan), transparent);
}

.page-about .partner-card--c::before {
  background: linear-gradient(180deg, var(--magenta), transparent);
}

.page-about .partner-card__title {
  margin: 14px 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(18px, 2vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .partner-card__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(232, 241, 236, .76);
}

.page-about .about-partners__cta {
  margin: clamp(24px, 3.4vw, 38px) 0 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-about .about-partners__cta a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .about-partners__cta a:hover {
  color: var(--gold-bright);
}

/* ---------- 荣誉与里程碑 ---------- */
.page-about .about-honors__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
  align-items: start;
}

.page-about .about-honors__list .section-title {
  margin-top: 12px;
}

.page-about .milestone-list {
  list-style: none;
  margin: clamp(20px, 2.8vw, 30px) 0 0;
  padding: 0;
}

.page-about .milestone-list li {
  position: relative;
  padding: 16px 0 16px 30px;
  border-bottom: 1px solid var(--about-line-soft);
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(232, 241, 236, .82);
}

.page-about .milestone-list li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 25px;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-about .honor-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: clamp(24px, 3vw, 36px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--about-line);
  background:
    radial-gradient(120% 100% at 18% 0%, rgba(56, 232, 200, .14), transparent 62%),
    linear-gradient(150deg, rgba(200, 162, 74, .16), rgba(19, 46, 39, .92));
}

.page-about .honor-panel__num {
  font-family: var(--font-mono);
  font-size: clamp(44px, 6vw, 66px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-bright);
}

.page-about .honor-panel__label {
  font-size: 15px;
  line-height: 1.7;
  color: var(--paper);
}

.page-about .honor-panel__note {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 服务承诺 ---------- */
.page-about .promise-grid {
  list-style: none;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .promise {
  padding: clamp(20px, 2.4vw, 28px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--about-line-soft);
  background: rgba(19, 46, 39, .58);
}

.page-about .promise::before {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  margin-bottom: 16px;
  background: var(--gold);
}

.page-about .promise:nth-child(2)::before {
  background: var(--cyan);
}

.page-about .promise:nth-child(3)::before {
  background: var(--magenta);
}

.page-about .promise:nth-child(4)::before {
  background: var(--violet);
}

.page-about .promise__title {
  margin: 0 0 10px;
  font-family: var(--font-heading);
  font-size: clamp(17px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .promise__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 241, 236, .74);
}

/* ---------- 末尾行动区 ---------- */
.page-about .about-cta__inner {
  display: grid;
  gap: 16px;
  padding: clamp(28px, 4vw, 52px);
  border-radius: var(--radius-xl);
  border: 1px solid var(--about-line);
  background:
    radial-gradient(90% 120% at 92% 0%, rgba(230, 72, 154, .16), transparent 62%),
    linear-gradient(140deg, rgba(19, 46, 39, .96), rgba(5, 11, 9, .9));
}

.page-about .about-cta__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(24px, 3.4vw, 36px);
  font-weight: 800;
  line-height: 1.24;
  color: var(--paper);
}

.page-about .about-cta__text {
  margin: 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(232, 241, 236, .78);
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .promise-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__frame {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: center;
  }

  .page-about .timeline__item {
    padding: 0 0 38px 190px;
  }

  .page-about .timeline__item::before {
    left: 150px;
    top: 12px;
    bottom: 0;
  }

  .page-about .timeline__item::after {
    left: 144px;
    top: 11px;
  }

  .page-about .timeline__marker {
    position: absolute;
    left: 0;
    top: 4px;
    width: 132px;
    margin-bottom: 0;
    text-align: right;
  }

  .page-about .timeline__year {
    font-size: clamp(20px, 1.9vw, 26px);
    letter-spacing: .06em;
  }

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

  .page-about .about-honors__layout {
    grid-template-columns: minmax(0, 8fr) minmax(0, 4fr);
  }
}

@media (min-width: 1000px) {
  .page-about .about-content__layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

@media (min-width: 1040px) {
  .page-about .partner-grid {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 22px;
    align-items: start;
  }

  .page-about .partner-card--a {
    grid-column: 1 / span 5;
    grid-row: 1;
  }

  .page-about .partner-card--b {
    grid-column: 7 / span 6;
    grid-row: 1 / span 2;
  }

  .page-about .partner-card--c {
    grid-column: 1 / span 5;
    grid-row: 2;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .timeline__body,
  .page-about .content-item {
    transition: none;
  }

  .page-about .timeline__item:hover .timeline__body,
  .page-about .content-item:hover {
    transform: none;
  }
}