/* ===== 品牌总览 / page-about ===== */
.page-about {
  --about-cut: 22px;
  --about-gap: clamp(24px, 4.5vw, 56px);
  --about-card: #FBF6EC;
  --about-card-hi: #FFFDF7;
  background: var(--ink);
  color: var(--cream);
}

.page-about h1,
.page-about h2,
.page-about h3 {
  font-family: var(--font-head);
  font-weight: 900;
  letter-spacing: -0.02em;
  margin: 0;
}

.page-about p {
  margin: 0;
}

.page-about .num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.page-about [data-filter-item][hidden] {
  display: none !important;
}

/* ---------- 面包屑 ---------- */
.page-about .breadcrumb {
  padding: 20px 0 4px;
}

.page-about .breadcrumb__link {
  color: var(--silver);
}

.page-about .breadcrumb__item[aria-current="page"] {
  color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding: 26px 0 46px;
  background:
    radial-gradient(760px 360px at 8% 0%, rgba(61, 123, 255, 0.18), transparent 62%),
    radial-gradient(560px 320px at 92% 100%, rgba(255, 106, 26, 0.14), transparent 66%),
    linear-gradient(180deg, var(--panel-deep), var(--ink) 82%);
  border-bottom: 1px solid var(--line);
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--orange) 26%, transparent 68%);
  opacity: 0.7;
}

.page-about .about-hero__grid {
  display: grid;
  gap: 30px;
  align-items: end;
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-size: clamp(30px, 6.4vw, 56px);
  line-height: 1.14;
  color: var(--cream);
}

.page-about .about-hero__title em {
  font-style: normal;
  color: var(--orange);
  position: relative;
  white-space: nowrap;
}

.page-about .about-hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), transparent);
  opacity: 0.6;
}

.page-about .about-hero__lede {
  margin-top: 20px;
  max-width: 46ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-hero__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .about-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-about .about-hero__media::before {
  content: "";
  position: absolute;
  top: -8px;
  left: -8px;
  width: 54px;
  height: 54px;
  border-top: 3px solid var(--orange);
  border-left: 3px solid var(--orange);
  clip-path: polygon(0 0, 100% 0, 100% 6px, 6px 6px, 6px 100%, 0 100%);
  z-index: 1;
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: 240px;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-hero__media figcaption {
  margin-top: 12px;
  padding-left: 12px;
  border-left: 2px solid var(--line-strong);
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 发展历程 ---------- */
.page-about .about-phase {
  padding: 54px 0 62px;
  background: linear-gradient(180deg, var(--ink), var(--panel-deep));
}

.page-about .about-phase__grid {
  display: grid;
  gap: 28px;
}

.page-about .about-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--silver);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-about .about-rail__list {
  list-style: none;
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-rail__link {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--silver);
  text-decoration: none;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 0 100%);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-about .about-rail__link .num {
  font-size: 12px;
  color: var(--blue);
}

.page-about .about-rail__link:hover,
.page-about .about-rail__link:focus-visible {
  color: var(--cream);
  border-color: var(--orange);
  background-color: rgba(255, 106, 26, 0.1);
}

.page-about .section-head {
  margin-bottom: 8px;
}

.page-about .section-head p {
  margin-top: 14px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .about-phase .filter-bar {
  margin-top: 26px;
}

.page-about .filter-status {
  margin-top: 10px;
  min-height: 20px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--silver);
}

.page-about .tl {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.page-about .tl__item {
  position: relative;
  display: grid;
  gap: 10px;
  padding: 24px 0 24px 22px;
}

.page-about .tl__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 32px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 106, 26, 0.16);
}

.page-about .tl__item::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 58px;
  height: 1px;
  background: var(--line-strong);
}

.page-about .tl__ver {
  display: block;
  font-size: 20px;
  font-weight: 700;
  color: var(--orange);
}

.page-about .tl__stage {
  display: block;
  margin-top: 4px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--silver);
}

.page-about .tl__title {
  font-size: 20px;
  line-height: 1.45;
  color: var(--cream);
}

.page-about .tl__main p {
  margin-top: 10px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

/* ---------- 团队与生产线 ---------- */
.page-about .about-team {
  padding: 56px 0 64px;
}

.page-about .about-team .eyebrow,
.page-about .about-partners .eyebrow {
  color: var(--rust);
}

.page-about .about-team .section-head p,
.page-about .about-partners .section-head p {
  color: rgba(42, 26, 18, 0.78);
}

.page-about .team {
  display: grid;
  gap: 16px;
  margin-top: 30px;
}

.page-about .team__card {
  position: relative;
  padding: 22px 20px 24px;
  background: var(--about-card);
  color: var(--brown);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .team__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--rust), var(--orange));
  opacity: 0.85;
}

.page-about .team__card:hover,
.page-about .team__card:focus-visible {
  transform: translateY(-4px);
  background: var(--about-card-hi);
  outline: none;
}

.page-about .team__card:focus-visible {
  box-shadow: inset 0 0 0 2px var(--blue);
}

.page-about .team__num {
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--rust);
}

.page-about .team__name {
  margin-top: 8px;
  font-size: 19px;
  line-height: 1.4;
}

.page-about .team__role {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(42, 26, 18, 0.82);
}

.page-about .team__duties {
  list-style: none;
  display: grid;
  gap: 7px;
  max-height: 0;
  margin: 0;
  padding: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.28s var(--ease), opacity 0.2s var(--ease), margin-top 0.2s var(--ease);
}

.page-about .team__duties li {
  position: relative;
  padding-left: 14px;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(42, 26, 18, 0.72);
}

.page-about .team__duties li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 5px;
  height: 5px;
  background: var(--orange);
  transform: rotate(45deg);
}

.page-about .team__card:hover .team__duties,
.page-about .team__card:focus .team__duties,
.page-about .team__card:focus-within .team__duties {
  max-height: 260px;
  margin-top: 14px;
  opacity: 1;
}

.page-about .flowline {
  margin-top: 36px;
  padding: 26px 22px 28px;
  background: var(--ink);
  color: var(--cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .flowline__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.01em;
}

.page-about .flowline__steps {
  list-style: none;
  display: grid;
  gap: 16px;
  margin: 22px 0 0;
  padding: 0;
}

.page-about .flowline__step {
  display: grid;
  gap: 6px;
  padding-left: 18px;
  border-left: 1px solid var(--line);
}

.page-about .flowline__idx {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--blue);
}

.page-about .flowline__step strong {
  font-size: 16px;
  color: var(--cream);
}

.page-about .flowline__step span:last-child {
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

.page-about .about-figure {
  margin: 34px 0 0;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--about-cut) 100%, 0 calc(100% - var(--about-cut)));
}

.page-about .about-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(42, 26, 18, 0.66);
}

/* ---------- 覆盖范围 ---------- */
.page-about .about-reach {
  padding: 56px 0 64px;
  background:
    radial-gradient(680px 340px at 88% 6%, rgba(61, 123, 255, 0.14), transparent 62%),
    linear-gradient(180deg, var(--panel-deep), var(--ink) 70%);
  border-top: 1px solid var(--line);
}

.page-about .about-reach__grid {
  display: grid;
  gap: 34px;
  align-items: center;
}

.page-about .about-reach__body p:not(.eyebrow):not(.about-reach__legal) {
  margin-top: 16px;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

.page-about .reach-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 14px;
  margin: 28px 0 0;
}

.page-about .reach-stats__cell {
  padding: 14px 16px;
  background: var(--panel);
  border-left: 3px solid var(--blue);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-about .reach-stats dt {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-about .reach-stats dd {
  margin: 8px 0 0;
  font-size: 22px;
  font-weight: 700;
  color: var(--cream);
}

.page-about .about-reach__legal {
  margin-top: 22px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-about .about-map {
  position: relative;
  aspect-ratio: 4 / 3;
  background-color: rgba(18, 48, 36, 0.72);
  background-image: radial-gradient(rgba(201, 207, 212, 0.26) 1.2px, transparent 1.3px);
  background-size: 14px 14px;
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .about-map__pin {
  position: absolute;
  left: 46%;
  top: 36%;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 6px rgba(255, 106, 26, 0.2), 0 0 22px 4px rgba(255, 106, 26, 0.55);
  animation: about-pulse 2.6s ease-in-out infinite;
}

.page-about .about-map__dot {
  position: absolute;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--silver);
  opacity: 0.55;
}

.page-about .about-map__dot--a { left: 24%; top: 58%; }
.page-about .about-map__dot--b { left: 68%; top: 26%; }
.page-about .about-map__dot--c { left: 78%; top: 64%; }
.page-about .about-map__dot--d { left: 34%; top: 22%; }
.page-about .about-map__dot--e { left: 56%; top: 78%; }

.page-about .about-map__cap {
  position: absolute;
  left: 16px;
  bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--silver);
}

.page-about .about-banner {
  margin: 44px 0 0;
}

.page-about .about-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  clip-path: polygon(0 var(--about-cut), var(--about-cut) 0, 100% 0, 100% 100%, 0 100%);
  filter: saturate(0.9) brightness(0.92);
}

.page-about .about-banner figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 合作与荣誉 ---------- */
.page-about .about-partners {
  padding: 56px 0 58px;
}

.page-about .partners {
  display: grid;
  gap: 18px;
  margin-top: 30px;
}

.page-about .partners__col {
  padding: 22px 20px 24px;
  background: var(--about-card);
  color: var(--brown);
  border-bottom: 3px solid var(--rust);
  clip-path: polygon(0 0, calc(100% - var(--about-cut)) 0, 100% var(--about-cut), 100% 100%, 0 100%);
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-about .partners__col:hover {
  transform: translateY(-4px);
  background: var(--about-card-hi);
}

.page-about .partners__value {
  font-size: 40px;
  font-weight: 700;
  line-height: 1;
  color: var(--rust);
}

.page-about .partners__name {
  margin-top: 12px;
  font-size: 18px;
  line-height: 1.4;
}

.page-about .partners__col p:last-child {
  margin-top: 10px;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(42, 26, 18, 0.76);
}

.page-about .honor-line {
  position: relative;
  margin-top: 30px;
  padding: 16px 18px 16px 30px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--brown);
  background: rgba(216, 69, 44, 0.1);
  border-left: 3px solid var(--rust);
}

.page-about .honor-line::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 24px;
  width: 8px;
  height: 8px;
  background: var(--rust);
  transform: rotate(45deg);
}

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

/* ---------- 收束条 ---------- */
.page-about .about-close {
  padding: 34px 0 40px;
  background: var(--panel);
  border-top: 1px solid var(--line);
}

.page-about .about-close__inner {
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-about .about-close__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-about .about-close__text p:last-child {
  margin-top: 10px;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--silver);
}

.page-about .about-close__legal {
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--silver);
}

.page-about .about-close .btn {
  justify-self: start;
}

@keyframes about-pulse {
  0%, 100% { box-shadow: 0 0 0 6px rgba(255, 106, 26, 0.2), 0 0 22px 4px rgba(255, 106, 26, 0.5); }
  50% { box-shadow: 0 0 0 12px rgba(255, 106, 26, 0.05), 0 0 30px 6px rgba(255, 106, 26, 0.7); }
}

/* ---------- 响应式 ---------- */
@media (hover: none) {
  .page-about .team__duties {
    max-height: 280px;
    margin-top: 14px;
    opacity: 1;
  }
}

@media (min-width: 640px) {
  .page-about .team {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .partners {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-about .about-hero__media img {
    height: 300px;
  }

  .page-about .flowline__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 22px;
  }

  .page-about .about-close__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 24px;
  }

  .page-about .about-close__legal {
    grid-column: 1 / -1;
    padding-top: 14px;
    border-top: 1px solid var(--line);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding: 34px 0 62px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
  }

  .page-about .about-hero__media img {
    height: 420px;
  }

  .page-about .about-reach__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 380px);
    gap: 48px;
  }

  .page-about .about-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-about .about-rail__link {
    border: 0;
    border-left: 1px solid var(--line);
    padding: 8px 0 8px 18px;
    clip-path: none;
    background: none;
  }

  .page-about .about-rail__link::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 50%;
    width: 7px;
    height: 7px;
    transform: translateY(-50%) rotate(45deg);
    background: var(--line-strong);
    transition: background 0.18s var(--ease);
  }

  .page-about .about-rail__link:hover::before,
  .page-about .about-rail__link:focus-visible::before {
    background: var(--orange);
  }
}

@media (min-width: 980px) {
  .page-about .about-phase {
    padding: 66px 0 78px;
  }

  .page-about .about-phase__grid {
    grid-template-columns: 176px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
  }

  .page-about .about-rail {
    position: sticky;
    top: 108px;
  }

  .page-about .tl__item {
    grid-template-columns: 128px minmax(0, 1fr);
    gap: 32px;
    padding: 28px 0 28px 26px;
  }

  .page-about .tl__item::before {
    top: 36px;
  }
}

@media (min-width: 1040px) {
  .page-about .team {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-about .about-team,
  .page-about .about-partners {
    padding: 72px 0 78px;
  }

  .page-about .about-reach {
    padding: 72px 0 80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    animation: none !important;
    transition: none !important;
  }
}