/* ========== 品牌概况页面专属样式 ========== */
.page-about {
  --about-gold: #d4af37;
  --about-gold-bright: #ffd700;
  --about-red: #8b0000;
  --about-ink: #0f0f1a;
  --about-panel: #16162e;
  --about-panel-deep: #121224;
  --about-line: #2e2e4a;
  background: var(--about-ink);
  color: var(--color-text);
  overflow-x: hidden;
}

/* ---------- Hero 横幅 ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 1.25rem) 0 2.25rem;
  overflow: hidden;
  background: linear-gradient(160deg, #0f0f1a 0%, #1a1a2e 62%, #201a24 100%);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(125deg, transparent 0 44px, rgba(212, 175, 55, 0.04) 44px 45px);
  pointer-events: none;
}

.page-about .about-hero::after {
  content: "";
  position: absolute;
  right: -5rem;
  bottom: -6rem;
  width: 18rem;
  height: 18rem;
  border: 2px solid rgba(139, 0, 0, 0.32);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-about .about-hero__inner {
  position: relative;
  z-index: 2;
}

.page-about .about-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1.75rem;
}

.page-about .about-hero__content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.page-about .about-hero__content .eyebrow--red {
  color: var(--about-gold);
}

.page-about .about-hero h1 {
  margin: 0.8rem 0 0.25rem;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 7vw, 3.75rem);
  line-height: 1.06;
  font-weight: 700;
  color: var(--color-text);
}

.page-about .about-hero h1::after {
  content: "";
  display: block;
  width: 3.5rem;
  height: 0.18rem;
  margin-top: 0.95rem;
  background: linear-gradient(90deg, var(--about-gold), var(--about-gold-bright));
}

.page-about .about-hero__lead {
  max-width: 47rem;
  margin: 1.25rem 0 0;
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  line-height: 1.78;
  color: #c9c9d6;
}

.page-about .about-hero__meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  width: 100%;
  margin-top: 2rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--color-border);
}

.page-about .about-hero__stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.05rem);
  font-weight: 700;
  color: var(--about-gold);
}

.page-about .about-hero__stat-label {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.page-about .about-hero__visual {
  position: relative;
}

.page-about .about-hero__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(212, 175, 55, 0.25);
  filter: saturate(0.92);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1.25rem), calc(100% - 1.25rem) 100%, 0 100%);
}

.page-about .about-hero__visual::after {
  content: "";
  position: absolute;
  inset: 0.875rem -0.625rem -0.625rem 0.875rem;
  border: 1px solid rgba(212, 175, 55, 0.45);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1.25rem), calc(100% - 1.25rem) 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__tilt {
  position: absolute;
  left: -0.4rem;
  bottom: -0.4rem;
  width: 42%;
  height: 42%;
  background: repeating-linear-gradient(-45deg, rgba(139, 0, 0, 0.42) 0 2px, rgba(139, 0, 0, 0.14) 2px 9px);
  clip-path: polygon(0 100%, 40% 100%, 100% 40%, 100% 0);
  opacity: 0.65;
  pointer-events: none;
}

/* 面包屑颜色微调 */
.page-about .breadcrumbs__list {
  margin: 0;
}

.page-about .breadcrumbs__list li {
  color: var(--color-muted);
}

.page-about .breadcrumbs__list a {
  color: rgba(224, 224, 224, 0.66);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

/* ---------- 品牌故事 ---------- */
.page-about .about-story {
  padding: 3.5rem 0 2.5rem;
}

.page-about .about-story__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
}

.page-about .about-story__main .eyebrow {
  color: var(--about-gold);
}

.page-about .about-story__main h2 {
  margin: 0.75rem 0 1.25rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.4vw, 2.45rem);
  line-height: 1.16;
  color: var(--color-text);
}

.page-about .about-story__main .prose p {
  max-width: 54rem;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: #c4c4d2;
}

.page-about .about-story__main .prose p + p {
  margin-top: 1rem;
}

.page-about .about-story__panel {
  position: relative;
  padding: 1.75rem 1.5rem;
  background: var(--color-bg-light);
  color: var(--color-text-dark);
  border-left: 4px solid var(--about-gold);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.75rem), calc(100% - 0.75rem) 100%, 0 100%);
}

.page-about .about-story__panel .tag {
  margin-bottom: 0.5rem;
}

.page-about .about-story__panel h3 {
  margin: 0.85rem 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  line-height: 1.25;
}

.page-about .about-story__panel > p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.68;
  color: #3a3a4e;
}

.page-about .about-story__facts {
  margin: 1.25rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid #d9d9e2;
  display: grid;
  gap: 0.4rem;
}

.page-about .about-story__facts div {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
}

.page-about .about-story__facts dt {
  min-width: 4.6rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--about-red);
}

.page-about .about-story__facts dd {
  margin: 0;
  font-size: 0.875rem;
  color: #2a2a3c;
}

/* ---------- 发展时间轴 ---------- */
.page-about .about-timeline {
  position: relative;
  padding: 3.5rem 0;
  background:
    repeating-linear-gradient(135deg, transparent 0 30px, rgba(255, 255, 255, 0.012) 30px 31px),
    linear-gradient(180deg, #0f0f1a 0%, #15152c 100%);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-about .about-timeline::after {
  content: "";
  position: absolute;
  right: -7rem;
  top: 1rem;
  width: 17rem;
  height: 17rem;
  background: radial-gradient(circle, rgba(139, 0, 0, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.page-about .section-heading {
  position: relative;
  z-index: 2;
}

.page-about .section-heading .eyebrow--red {
  color: var(--about-gold);
}

.page-about .section-heading h2 {
  margin: 0.75rem 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  line-height: 1.2;
  color: var(--color-text);
}

.page-about .section-heading > p:last-child {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.65;
  max-width: 40rem;
}

.page-about .about-timeline__list {
  position: relative;
  z-index: 2;
  margin: 2.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  left: 1.35rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  background: linear-gradient(180deg, var(--about-gold) 0%, var(--about-red) 74%, transparent 100%);
  opacity: 0.82;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 2.1rem 3.75rem;
}

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

.page-about .about-timeline__dot {
  position: absolute;
  left: 1rem;
  top: 0.5rem;
  width: 0.78rem;
  height: 0.78rem;
  border-radius: 50%;
  background: var(--about-gold);
  box-shadow: 0 0 0 4px rgba(212, 175, 55, 0.16), 0 0 0 8px rgba(212, 175, 55, 0.06);
}

.page-about .about-timeline__card {
  background: rgba(12, 12, 26, 0.58);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--about-gold);
  padding: 1.15rem 1.25rem 1.05rem;
  transition: background-color 0.25s ease, border-color 0.25s ease, transform 0.25s ease;
}

.page-about .about-timeline__card:hover {
  border-color: var(--about-gold);
  background: rgba(28, 28, 56, 0.9);
  transform: translateX(3px);
}

.page-about .about-timeline__year {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--about-gold);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.64;
  color: var(--color-muted);
}

/* ---------- 主体双栏 ---------- */
.page-about .about-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 2.5rem;
  padding-top: 3rem;
  padding-bottom: 3rem;
}

.page-about .about-main__content {
  display: grid;
  gap: 2.75rem;
}

.page-about .about-team h2,
.page-about .about-partners h2 {
  margin: 0.7rem 0 0.85rem;
  font-family: var(--font-display);
  font-size: clamp(1.55rem, 3vw, 2.15rem);
  line-height: 1.2;
  color: var(--color-text);
}

.page-about .about-section__lead {
  max-width: 42rem;
  margin: 0 0 1.5rem;
  color: var(--color-muted);
  line-height: 1.7;
}

.page-about .about-team__card,
.page-about .about-partners__card {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.25rem;
  background: var(--about-panel);
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 0.9rem), calc(100% - 0.9rem) 100%, 0 100%);
}

.page-about .about-team__body h3,
.page-about .about-partners__body h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--about-gold);
}

.page-about .about-team__body p,
.page-about .about-partners__body p {
  margin: 0;
  font-size: 0.925rem;
  line-height: 1.7;
  color: #c4c4d2;
}

.page-about .about-team__media img,
.page-about .about-partners__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--color-border);
  filter: saturate(0.86);
}

.page-about .about-team__roles {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.05rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__roles .tag {
  margin: 0;
}

.page-about .about-partners__list {
  margin: 0.5rem 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-partners__list li {
  position: relative;
  padding: 0.68rem 0 0.68rem 1.5rem;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.925rem;
  line-height: 1.6;
  color: #c4c4d2;
}

.page-about .about-partners__list li:last-child {
  border-bottom: 0;
}

.page-about .about-partners__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 1.08rem;
  width: 0.65rem;
  height: 2px;
  background: var(--about-gold);
}

/* ---------- 侧边栏 ---------- */
.page-about .about-sidebar__sticky {
  display: grid;
  gap: 1.5rem;
}

.page-about .about-sidebar .panel {
  position: relative;
  background: var(--about-panel-deep);
  border: 1px solid var(--color-border);
  padding: 1.5rem 1.25rem;
}

.page-about .about-sidebar .panel::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 2.6rem;
  height: 0.4rem;
  background: repeating-linear-gradient(135deg, rgba(139, 0, 0, 0.5) 0 1px, transparent 1px 6px);
  pointer-events: none;
}

.page-about .about-sidebar .eyebrow {
  color: var(--about-gold);
}

.page-about .about-sidebar__title {
  margin: 0.5rem 0 1.1rem;
  font-family: var(--font-display);
  font-size: 1.35rem;
  line-height: 1.3;
  color: var(--color-text);
}

.page-about .about-cert__list {
  display: grid;
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-cert__list li {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.8rem;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--about-gold);
}

.page-about .about-cert__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.9rem;
  min-height: 2.9rem;
  padding: 0.3rem 0.45rem;
  background: linear-gradient(135deg, #a01414, #580000);
  color: #ffd9a0;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.15;
  text-align: center;
  letter-spacing: 0.04em;
}

.page-about .about-cert__list li > span:last-child {
  font-size: 0.9375rem;
  line-height: 1.42;
  color: var(--color-text);
}

.page-about .about-cert__list small {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

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

.page-about .about-honors__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-bottom: 1px dashed var(--color-border);
  font-size: 0.925rem;
  color: var(--color-text);
}

.page-about .about-honors__list li:last-child {
  border-bottom: 0;
}

.page-about .about-honors__list li span {
  flex-shrink: 0;
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--about-gold);
}

.page-about .about-contact > p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-muted);
}

.page-about .about-contact__list {
  display: grid;
  gap: 0.55rem;
  margin: 1rem 0 1.15rem;
  padding: 0;
  list-style: none;
}

.page-about .about-contact__list li {
  padding-left: 0.85rem;
  border-left: 2px solid var(--about-red);
  font-size: 0.875rem;
  line-height: 1.5;
  color: #c4c4d2;
}

/* ---------- 底部 CTA ---------- */
.page-about .about-cta {
  position: relative;
  padding: 3.5rem 0 4rem;
}

.page-about .about-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, #181832, #1e1a30 55%, #241d26);
  border-top: 1px solid var(--color-border);
}

.page-about .about-cta__inner {
  position: relative;
  z-index: 2;
  padding: 2rem 1.5rem;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(212, 175, 55, 0.12), transparent 55%),
    var(--about-panel-deep);
  border: 1px solid rgba(212, 175, 55, 0.32);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 1rem), calc(100% - 1rem) 100%, 0 100%);
}

.page-about .about-cta__inner h2 {
  margin: 0.7rem 0 1.5rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.4vw, 2.25rem);
  line-height: 1.2;
  color: var(--color-text);
}

.page-about .about-cta__inner .eyebrow {
  color: var(--about-gold);
}

.page-about .about-cta__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.9rem;
}

.page-about .about-cta__links .btn {
  min-width: 9.75rem;
  justify-content: center;
}

/* ---------- 响应式增强 ---------- */
@media (min-width: 720px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 2rem);
    padding-bottom: 3.25rem;
  }

  .page-about .about-hero__grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 2.75rem;
    align-items: center;
  }

  .page-about .about-story {
    padding: 4.25rem 0 3rem;
  }

  .page-about .about-team__card {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    align-items: center;
    gap: 1.75rem;
    padding: 1.75rem;
  }

  .page-about .about-partners__card {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: center;
    gap: 1.75rem;
    padding: 1.75rem;
  }

  .page-about .about-partners__media {
    order: 2;
  }

  .page-about .about-timeline__list {
    margin-left: 0.5rem;
  }

  .page-about .about-timeline__card p {
    font-size: 0.9375rem;
  }
}

@media (min-width: 1024px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 2.5rem);
    padding-bottom: 4rem;
  }

  .page-about .about-story__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 3.5rem;
  }

  .page-about .about-timeline {
    padding: 4.5rem 0;
  }

  .page-about .about-main {
    grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
    gap: 3rem;
    padding-top: 3.5rem;
    padding-bottom: 4rem;
  }

  .page-about .about-sidebar__sticky {
    position: sticky;
    top: calc(var(--header-h) + 1.25rem);
  }

  .page-about .about-cta {
    padding: 4.5rem 0 5rem;
  }

  .page-about .about-cta__inner {
    padding: 2.75rem 2rem;
  }
}