/* ===== 品牌故事页专属样式 ===== */
.page-about {
  --about-bevel: 16px;
  position: relative;
  color: var(--color-text-primary);
  overflow-x: hidden;
}

.page-about::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 191, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 191, 255, 0.05) 1px, transparent 1px);
  background-size: 36px 36px;
  pointer-events: none;
}

.page-about > * {
  position: relative;
  z-index: 1;
}

.page-about .breadcrumbs {
  margin: 24px 0 0;
  font-size: 0.9rem;
}

/* 坐标标签适配 */
.page-about .about-coord {
  display: inline-block;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  background: rgba(255, 140, 0, 0.08);
  color: var(--color-accent-orange);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

/* Hero 首屏 */
.page-about .about-hero {
  padding: 56px 0 88px;
}

.page-about .about-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 56px;
  align-items: center;
}

.page-about .about-hero-copy {
  max-width: 640px;
}

.page-about .about-hero-copy h1 {
  font-family: var(--font-headline);
  font-size: var(--font-size-h1);
  line-height: 1.12;
  text-transform: uppercase;
  transform: skew(-3deg);
  margin: 18px 0 20px;
  letter-spacing: 0.01em;
}

.page-about .about-h1-accent {
  display: block;
  color: var(--color-accent-orange);
}

.page-about .about-hero-lead {
  font-size: 1.05rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  margin-bottom: 28px;
}

.page-about .about-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.page-about .about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 36px;
  margin: 0;
  padding: 26px 0 0;
  border-top: 2px solid var(--color-border);
}

.page-about .about-hero-stats > div {
  min-width: 104px;
}

.page-about .about-hero-stats dt {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.page-about .about-hero-stats dd {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.page-about .about-hero-stats dd .data-figure {
  color: var(--color-text-primary);
}

.page-about .about-hero-media {
  position: relative;
}

.page-about .about-hero-media::before {
  content: "";
  position: absolute;
  inset: 18px -14px -14px 18px;
  background: var(--color-overlay-blue);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
  z-index: 1;
}

.page-about .about-hero-media img {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

/* 通用章节 */
.page-about .about-section {
  padding: 84px 0;
  scroll-margin-top: 140px;
}

.page-about .about-section-header {
  max-width: 720px;
  margin-bottom: 48px;
}

.page-about .about-section-title {
  font-family: var(--font-headline);
  font-size: var(--font-size-h2);
  text-transform: uppercase;
  transform: skew(-3deg);
  margin: 10px 0 12px;
}

.page-about .about-section-desc {
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.page-about .about-section-desc a {
  color: var(--color-accent-blue);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 品牌起源 */
.page-about .about-origin {
  background: linear-gradient(180deg, rgba(0, 191, 255, 0.03), transparent 60%);
}

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

.page-about .about-origin-card {
  padding: 30px 26px 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-top: 4px solid var(--color-accent-blue);
  clip-path: polygon(0 0, calc(100% - var(--about-bevel)) 0, 100% var(--about-bevel), 100% 100%, 0 100%);
  transition: border-color 0.25s ease, transform 0.25s ease, background 0.25s ease;
}

.page-about .about-origin-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-accent-blue);
  background: #1b2430;
}

.page-about .about-card-index {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent-orange);
  letter-spacing: 0.08em;
}

.page-about .about-origin-card h3 {
  font-family: var(--font-headline);
  font-size: var(--font-size-h3);
  margin: 12px 0 10px;
  transform: skew(-2deg);
}

.page-about .about-origin-card p {
  font-size: 0.95rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

/* 数据方法论 */
.page-about .about-method {
  background:
    radial-gradient(circle at 10% 15%, rgba(0, 191, 255, 0.14), transparent 42%),
    radial-gradient(circle at 90% 85%, rgba(255, 140, 0, 0.1), transparent 40%),
    var(--color-card-bg);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.page-about .about-method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
}

.page-about .about-method-card {
  padding: 24px 20px;
  background: rgba(13, 17, 23, 0.85);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent-blue);
  outline: none;
  transition: border-color 0.3s ease, transform 0.3s ease, background 0.3s ease;
}

.page-about .about-method-card:hover,
.page-about .about-method-card:focus-within {
  border-left-color: var(--color-accent-orange);
  transform: translateY(-6px);
  background: rgba(13, 17, 23, 0.98);
}

.page-about .about-method-step {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--color-accent-blue);
  margin-bottom: 12px;
}

.page-about .about-method-card h3 {
  font-family: var(--font-headline);
  font-size: var(--font-size-h3);
  margin-bottom: 10px;
  transform: skew(-2deg);
}

.page-about .about-method-card > p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-bottom: 0;
}

.page-about .about-method-detail {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, opacity 0.4s ease;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin-top: 0;
}

.page-about .about-method-card:hover .about-method-detail,
.page-about .about-method-card:focus-within .about-method-detail {
  max-height: 190px;
  opacity: 1;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}

/* 发展里程碑 */
.page-about .about-milestones-header {
  max-width: 720px;
}

.page-about .about-timeline {
  list-style: none;
  margin: 48px 0 16px;
  padding: 0;
  position: relative;
}

.page-about .about-timeline::before {
  content: "";
  position: absolute;
  left: 126px;
  top: 6px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-accent-blue), rgba(0, 191, 255, 0.15));
}

.page-about .about-timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr);
  column-gap: 28px;
  padding-bottom: 34px;
}

.page-about .about-timeline-item::before {
  content: "";
  position: absolute;
  left: 114px;
  top: 30px;
  width: 24px;
  height: 24px;
  background: var(--color-accent-blue);
  border: 5px solid var(--color-primary-bg);
  transform: rotate(45deg);
  box-shadow: 0 0 0 2px rgba(0, 191, 255, 0.25);
}

.page-about .about-timeline-year {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  text-align: right;
  padding-top: 24px;
  color: var(--color-accent-blue);
  letter-spacing: -0.02em;
}

.page-about .about-timeline-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent-orange);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-about .about-timeline-card:hover {
  border-color: var(--color-accent-blue);
}

.page-about .about-timeline-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
}

.page-about .about-timeline-item summary::-webkit-details-marker {
  display: none;
}

.page-about .about-timeline-item summary:hover {
  background: var(--color-overlay-blue);
}

.page-about .about-timeline-title {
  font-weight: 600;
  font-size: 1.02rem;
}

.page-about .about-timeline-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  background: var(--color-border);
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--color-text-primary);
  border-radius: 4px;
  transition: background 0.25s ease, transform 0.25s ease;
}

.page-about .about-timeline-item details[open] .about-timeline-toggle {
  background: var(--color-accent-orange);
  transform: rotate(45deg);
}

.page-about .about-timeline-detail {
  padding: 2px 18px 18px;
  color: var(--color-text-secondary);
  font-size: 0.93rem;
  line-height: 1.8;
  border-top: 1px solid var(--color-border);
}

.page-about .about-timeline-detail p {
  margin: 12px 0 0;
}

.page-about .about-timeline-detail a {
  color: var(--color-accent-blue);
  text-decoration: underline;
  text-underline-offset: 4px;
}

/* 团队与资质 */
.page-about .about-team-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.page-about .about-team-groups {
  display: grid;
  gap: 18px;
}

.page-about .about-team-card {
  padding: 24px 26px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-accent-blue);
  transition: border-color 0.25s ease;
}

.page-about .about-team-card:hover {
  border-left-color: var(--color-accent-gold);
}

.page-about .about-team-card h3 {
  font-family: var(--font-headline);
  font-size: 1.15rem;
  margin-bottom: 8px;
  transform: skew(-2deg);
}

.page-about .about-team-card p {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-about .about-team-total {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 24px;
  background: linear-gradient(90deg, rgba(255, 215, 0, 0.08), transparent 60%);
  border: 1px solid var(--color-border);
}

.page-about .about-team-total .data-figure {
  font-size: var(--font-size-data);
  color: var(--color-accent-gold);
  font-family: var(--font-mono);
}

.page-about .about-team-total span:last-child {
  color: var(--color-text-secondary);
}

.page-about .about-team-right {
  display: grid;
  gap: 24px;
}

.page-about .about-team-figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, calc(100% - 16px) 0, 100% 16px, 100% 100%, 16px 100%, 0 calc(100% - 16px));
}

.page-about .about-honor-wall {
  position: relative;
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
  overflow: hidden;
}

.page-about .about-honor-wall img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
}

.page-about .about-honor-wall::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13, 17, 23, 0.92), rgba(13, 17, 23, 0.55));
  z-index: 1;
}

.page-about .about-honor-content {
  position: relative;
  z-index: 2;
  padding: 26px 28px 30px;
}

.page-about .about-honor-heading {
  font-family: var(--font-headline);
  font-size: 1.25rem;
  color: var(--color-accent-gold);
  margin-bottom: 18px;
  transform: skew(-3deg);
  text-transform: uppercase;
}

.page-about .about-honor-content ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-about .about-honor-content li {
  padding: 12px 0 12px 24px;
  border-bottom: 1px solid rgba(42, 61, 86, 0.7);
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  position: relative;
  line-height: 1.6;
}

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

.page-about .about-honor-content li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 18px;
  width: 10px;
  height: 10px;
  background: var(--color-accent-gold);
  transform: rotate(45deg);
}

/* 结尾 CTA */
.page-about .about-final-cta {
  text-align: center;
  padding: 96px 0 88px;
  background:
    linear-gradient(120deg, rgba(0, 191, 255, 0.12), transparent 45%),
    linear-gradient(300deg, rgba(255, 140, 0, 0.1), transparent 45%),
    var(--color-card-bg);
  border-top: 1px solid var(--color-border);
}

.page-about .about-final-cta h2 {
  font-family: var(--font-headline);
  font-size: var(--font-size-h2);
  text-transform: uppercase;
  transform: skew(-3deg);
  margin-bottom: 16px;
}

.page-about .about-final-cta p {
  color: var(--color-text-secondary);
  max-width: 520px;
  margin: 0 auto 28px;
  line-height: 1.8;
}

/* 平板适配 */
@media (max-width: 1024px) {
  .page-about .about-hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .page-about .about-hero-media {
    max-width: 680px;
  }

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

  .page-about .about-origin-card:last-child {
    grid-column: span 2;
  }

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

  .page-about .about-team-layout {
    grid-template-columns: 1fr;
  }

  .page-about .about-team-right {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }
}

/* 手机适配 */
@media (max-width: 767px) {
  .page-about .about-hero {
    padding: 32px 0 64px;
  }

  .page-about .about-hero-grid {
    gap: 32px;
  }

  .page-about .about-hero-copy h1 {
    font-size: 1.7rem;
  }

  .page-about .about-hero-stats {
    gap: 20px;
  }

  .page-about .about-hero-stats > div {
    min-width: 90px;
  }

  .page-about .about-hero-media::before {
    inset: 10px -8px -8px 10px;
  }

  .page-about .about-section {
    padding: 56px 0;
  }

  .page-about .about-origin-grid {
    grid-template-columns: 1fr;
  }

  .page-about .about-origin-card:last-child {
    grid-column: auto;
  }

  .page-about .about-method-grid {
    grid-template-columns: 1fr;
  }

  /* 时间轴单列 */
  .page-about .about-timeline::before {
    left: 8px;
  }

  .page-about .about-timeline-item {
    display: block;
    padding-left: 42px;
  }

  .page-about .about-timeline-item::before {
    left: 0;
    top: 22px;
    width: 18px;
    height: 18px;
    border-width: 3px;
  }

  .page-about .about-timeline-year {
    text-align: left;
    font-size: 1.2rem;
    padding-top: 0;
    margin-bottom: 8px;
  }

  .page-about .about-timeline-card {
    margin-left: 0;
  }

  .page-about .about-method-detail {
    max-height: none;
    opacity: 1;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--color-border);
  }

  .page-about .about-team-right {
    grid-template-columns: 1fr;
  }

  .page-about .about-honor-content {
    padding: 20px;
  }

  .page-about .about-final-cta {
    padding: 72px 0 64px;
  }
}