/* ===== 品牌档案页 ===== */
.page-about {
  --about-card: #fffdf8;
  --about-warm: #ece2ce;
  background: var(--bw-cream);
  color: var(--bw-ink);
  font-family: var(--bw-font-body);
  overflow-x: hidden;
}

.page-about .about-sec {
  padding: 54px 0;
}

.page-about .about-sec__head {
  max-width: 720px;
  margin-bottom: 32px;
}

.page-about .about-sec__head .bw-title,
.page-about .about-partners__h {
  margin: 10px 0 0;
}

/* ---------- 首屏 ---------- */
.page-about .about-hero {
  position: relative;
  padding-top: calc(var(--bw-bar-h) + 36px);
  background: linear-gradient(152deg, var(--bw-inkblue) 0%, var(--bw-navy) 56%, #0e2c53 100%);
  color: var(--bw-cream);
  overflow: hidden;
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 210, 220, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 210, 220, 0.07) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 32px;
  padding-bottom: 44px;
}

.page-about .about-crumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  font-family: var(--bw-font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--bw-silver);
}

.page-about .about-crumb a {
  color: var(--bw-silver);
  text-decoration: none;
  border-bottom: 1px solid rgba(201, 210, 220, 0.4);
}

.page-about .about-crumb a:hover,
.page-about .about-crumb a:focus-visible {
  color: var(--bw-orange);
  border-bottom-color: var(--bw-orange);
}

.page-about .about-crumb [aria-current] {
  color: var(--bw-orange);
}

.page-about .about-hero__title {
  margin: 14px 0 0;
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: clamp(2rem, 8.4vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--bw-cream);
  text-wrap: balance;
}

.page-about .about-hero__lede {
  margin: 18px 0 0;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 239, 227, 0.82);
}

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

.page-about .about-hero__media {
  position: relative;
  margin: 0;
  border: 2px solid rgba(245, 239, 227, 0.26);
  background: var(--bw-inkblue);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-about .about-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 14 / 9;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-about .about-hero__cap {
  position: absolute;
  left: 0;
  bottom: 0;
  padding: 8px 14px;
  background: var(--bw-orange);
  color: var(--bw-inkblue);
  font-family: var(--bw-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.page-about .about-index {
  position: relative;
  z-index: 1;
  border-top: 1px solid rgba(201, 210, 220, 0.22);
  background: rgba(7, 20, 38, 0.55);
}

.page-about .about-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-about .about-index__list::-webkit-scrollbar {
  display: none;
}

.page-about .about-index__list li {
  flex: 0 0 auto;
}

.page-about .about-index__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 15px 0 13px;
  font-size: 13px;
  color: var(--bw-silver);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 3px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-about .about-index__list a .bw-num {
  font-family: var(--bw-font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--bw-orange);
}

.page-about .about-index__list a:hover,
.page-about .about-index__list a:focus-visible {
  color: var(--bw-cream);
  border-bottom-color: var(--bw-orange);
}

/* ---------- 品牌起点 ---------- */
.page-about .about-origin {
  background: var(--bw-cream);
  border-top: 1px solid var(--bw-line);
}

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

.page-about .about-origin__year {
  align-self: start;
  padding: 22px 22px 24px 26px;
  background: var(--bw-navy);
  color: var(--bw-cream);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}

.page-about .about-origin__year .bw-num {
  display: block;
  font-family: var(--bw-font-mono);
  font-weight: 700;
  font-size: clamp(2.2rem, 9vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--bw-orange);
}

.page-about .about-origin__yearlabel {
  display: block;
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--bw-silver);
}

.page-about .about-origin__body .bw-title {
  margin: 10px 0 16px;
}

.page-about .about-origin__body p {
  margin: 0 0 15px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(42, 31, 26, 0.86);
}

.page-about .about-pilllist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .about-pilllist li {
  padding: 7px 13px;
  border: 1px solid var(--bw-navy);
  font-family: var(--bw-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--bw-navy);
}

.page-about .about-pilllist li:nth-child(odd) {
  border-color: var(--bw-orange);
  color: var(--bw-orange);
}

/* ---------- 发展时间线 ---------- */
.page-about .about-timeline {
  background: linear-gradient(180deg, var(--bw-navy) 0%, #0a1c33 100%);
  color: var(--bw-cream);
}

.page-about .about-timeline .bw-title,
.page-about .about-promise .bw-title {
  color: var(--bw-cream);
}

.page-about .about-timeline__h {
  margin: 10px 0 0;
  max-width: 760px;
}

.page-about .about-timeline__lede {
  margin: 16px 0 0;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(245, 239, 227, 0.74);
}

.page-about .about-tl {
  position: relative;
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
}

.page-about .about-tl::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 10px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(180deg, var(--bw-orange) 0%, rgba(255, 107, 26, 0.12) 100%);
}

.page-about .about-tl__item {
  position: relative;
  max-width: 800px;
  margin-bottom: 30px;
  padding-left: 34px;
}

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

.page-about .about-tl__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 16px;
  height: 16px;
  background: var(--bw-navy);
  border: 2px solid var(--bw-orange);
  transform: rotate(45deg);
}

.page-about .about-tl__year {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 10px;
  background: var(--bw-orange);
  color: var(--bw-inkblue);
  font-family: var(--bw-font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.14em;
}

.page-about .about-tl__h {
  margin: 0 0 8px;
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: 20px;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--bw-cream);
}

.page-about .about-tl__p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(245, 239, 227, 0.72);
}

/* ---------- 服务能力 ---------- */
.page-about .about-cap {
  background: var(--bw-cream);
}

.page-about .about-cap__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .about-cap__card {
  position: relative;
  padding: 24px 20px 26px;
  background: var(--about-card);
  border: 2px solid var(--bw-navy);
  overflow: hidden;
}

.page-about .about-cap__card::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 16px;
  height: 16px;
  background: var(--bw-orange);
  clip-path: polygon(0 0, 0 100%, 100% 100%);
}

.page-about .about-cap__no {
  position: absolute;
  top: 12px;
  right: 16px;
  font-family: var(--bw-font-mono);
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: rgba(11, 31, 58, 0.13);
}

.page-about .about-cap__card h3 {
  margin: 0 0 10px;
  max-width: 82%;
  font-family: var(--bw-font-display);
  font-style: italic;
  font-weight: 900;
  font-size: 19px;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--bw-navy);
}

.page-about .about-cap__card p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: rgba(42, 31, 26, 0.8);
}

/* ---------- 运营节奏 ---------- */
.page-about .about-ops {
  background: var(--about-warm);
  border-top: 1px solid var(--bw-line);
  border-bottom: 1px solid var(--bw-line);
}

.page-about .about-ops__grid {
  display: grid;
  gap: 30px;
}

.page-about .about-ops__media {
  margin: 0;
  border: 2px solid var(--bw-navy);
  background: var(--bw-inkblue);
}

.page-about .about-ops__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-about .about-ops__body .bw-title {
  margin: 10px 0 14px;
}

.page-about .about-ops__p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(42, 31, 26, 0.86);
}

.page-about .about-ops__list {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-about .about-ops__list li {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: 10px;
  padding: 14px 0;
  border-top: 1px solid var(--bw-line);
  font-size: 15px;
  line-height: 1.72;
  color: rgba(42, 31, 26, 0.84);
}

.page-about .about-ops__list li:last-child {
  border-bottom: 1px solid var(--bw-line);
}

.page-about .about-ops__list .bw-num {
  padding-top: 3px;
  font-family: var(--bw-font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--bw-orange);
}

.page-about .about-ops__list strong {
  display: block;
  margin-bottom: 3px;
  font-size: 15px;
  color: var(--bw-navy);
}

.page-about .about-ops__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 24px;
}

.page-about .about-ops__stat {
  padding: 15px 14px;
  background: var(--bw-navy);
  border-left: 3px solid var(--bw-orange);
}

.page-about .about-ops__stat .bw-num {
  display: block;
  font-family: var(--bw-font-mono);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: #ffffff;
}

.page-about .about-ops__stat small {
  display: block;
  margin-top: 7px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--bw-silver);
}

/* ---------- 合作生态 ---------- */
.page-about .about-partners {
  background: var(--bw-cream);
}

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

.page-about .about-partners__media {
  margin: 0;
  border: 2px solid var(--bw-navy);
  background: var(--bw-inkblue);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

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

.page-about .about-partners__p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: rgba(42, 31, 26, 0.86);
}

.page-about .about-badges {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-about .about-badge {
  padding: 16px 14px;
  background: var(--about-card);
  border: 1px solid var(--bw-navy);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.page-about .about-badge:hover,
.page-about .about-badge:focus-visible {
  transform: translateY(-3px);
  border-color: var(--bw-orange);
  box-shadow: var(--bw-shadow);
  outline: none;
}

.page-about .about-badge__n {
  display: block;
  font-family: var(--bw-font-mono);
  font-size: 25px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.04em;
  color: var(--bw-orange);
}

.page-about .about-badge__k {
  display: block;
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--bw-navy);
}

.page-about .about-badge__note {
  display: block;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--bw-line);
  font-size: 12px;
  line-height: 1.55;
  color: rgba(42, 31, 26, 0.62);
  transition: color 0.18s ease;
}

.page-about .about-badge:hover .about-badge__note,
.page-about .about-badge:focus-visible .about-badge__note {
  color: var(--bw-ink);
}

/* ---------- 品牌承诺 ---------- */
.page-about .about-promise {
  position: relative;
  background: linear-gradient(140deg, var(--bw-inkblue) 0%, var(--bw-navy) 68%);
  color: var(--bw-cream);
  overflow: hidden;
}

.page-about .about-promise::after {
  content: "";
  position: absolute;
  top: -20%;
  right: -14%;
  width: 44%;
  height: 150%;
  background: linear-gradient(180deg, rgba(255, 107, 26, 0.16), rgba(255, 107, 26, 0));
  transform: skewX(-9deg);
  pointer-events: none;
}

.page-about .about-promise__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
}

.page-about .about-promise .bw-title {
  margin: 10px 0 18px;
}

.page-about .about-promise__text {
  margin: 0;
  max-width: 700px;
  font-size: 16px;
  line-height: 1.82;
  color: rgba(245, 239, 227, 0.82);
}

.page-about .about-promise__text a {
  color: var(--bw-orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 26, 0.55);
}

.page-about .about-promise__text a:hover,
.page-about .about-promise__text a:focus-visible {
  border-bottom-color: var(--bw-orange);
}

.page-about .about-promise__list {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-about .about-promise__list li {
  padding-top: 12px;
  border-top: 2px solid var(--bw-orange);
  font-size: 14px;
  line-height: 1.7;
  color: var(--bw-silver);
}

.page-about .about-promise__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-about .about-cap__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-about .about-ops__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-about .about-sec {
    padding: 84px 0;
  }

  .page-about .about-hero {
    padding-top: calc(var(--bw-bar-h) + 56px);
  }

  .page-about .about-hero__inner {
    grid-template-columns: 1.04fr 0.96fr;
    align-items: end;
    gap: 48px;
    padding-bottom: 60px;
  }

  .page-about .about-origin__grid {
    grid-template-columns: 0.34fr 0.66fr;
    gap: 56px;
  }

  .page-about .about-ops__grid {
    grid-template-columns: 0.88fr 1.12fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .about-partners__grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: 48px;
    align-items: center;
  }
}

@media (min-width: 1100px) {
  .page-about .about-cap__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about *,
  .page-about *::before,
  .page-about *::after {
    transition-duration: 0.01ms !important;
  }

  .page-about .about-badge:hover,
  .page-about .about-badge:focus-visible {
    transform: none;
  }
}