/* ============================================
   品牌故事 · page-about 页面专属样式
   所有选择器限定在 .page-about 作用域内
   ============================================ */

.page-about {
  --about-accent-orange-soft: rgba(255, 107, 53, 0.12);
  --about-accent-cyan-soft: rgba(0, 229, 255, 0.12);
  --about-card-bg: rgba(27, 16, 53, 0.62);
  background: var(--color-space-black);
  color: var(--color-text-primary);
  overflow-x: hidden;
}

/* ===== Hero ===== */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-height) + 1.25rem) 1.5rem 3rem;
  background:
    radial-gradient(circle at 18% 22%, rgba(0, 229, 255, 0.16) 0%, transparent 32%),
    radial-gradient(circle at 82% 68%, rgba(255, 107, 53, 0.14) 0%, transparent 36%),
    radial-gradient(1.5px 1.5px at 12% 30%, rgba(224, 224, 255, 0.7) 0%, transparent 60%),
    radial-gradient(1px 1px at 26% 55%, rgba(0, 229, 255, 0.6) 0%, transparent 60%),
    radial-gradient(2px 2px at 45% 20%, rgba(255, 107, 53, 0.5) 0%, transparent 60%),
    radial-gradient(1px 1px at 58% 45%, rgba(224, 224, 255, 0.5) 0%, transparent 60%),
    radial-gradient(1.5px 1.5px at 70% 30%, rgba(0, 229, 255, 0.5) 0%, transparent 60%),
    radial-gradient(1px 1px at 84% 52%, rgba(224, 224, 255, 0.6) 0%, transparent 60%),
    radial-gradient(1px 1px at 90% 82%, rgba(255, 107, 53, 0.5) 0%, transparent 60%),
    radial-gradient(2px 2px at 63% 78%, rgba(224, 224, 255, 0.4) 0%, transparent 60%),
    linear-gradient(140deg, var(--color-space-black) 0%, var(--color-space-navy) 55%, var(--color-space-violet) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.5rem), 0 100%);
}

.page-about .about-hero::before {
  content: '';
  position: absolute;
  width: 5.5rem;
  height: 5.5rem;
  border: 1px solid rgba(0, 229, 255, 0.2);
  transform: rotate(45deg);
  border-radius: 6px;
  right: 8%;
  top: 42%;
  pointer-events: none;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  width: 3.5rem;
  height: 3.5rem;
  border: 1px solid rgba(255, 107, 53, 0.25);
  transform: rotate(45deg);
  border-radius: 4px;
  left: 6%;
  bottom: 22%;
  pointer-events: none;
}

.page-about .about-hero .breadcrumbs {
  margin-bottom: 2.5rem;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
}

.page-about .about-hero__kicker {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-accent-cyan);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  margin-bottom: 0.75rem;
}

.page-about .about-hero__kicker::before {
  content: '';
  width: 2rem;
  height: 2px;
  background: var(--color-accent-orange);
  flex: 0 0 auto;
}

.page-about .about-hero__title {
  font-size: clamp(2.1rem, 8vw, 4.2rem);
  line-height: 1.12;
  letter-spacing: -0.01em;
  margin-bottom: 1.25rem;
  font-weight: 900;
  max-width: 16em;
}

.page-about .about-hero__highlight {
  display: inline-block;
  color: var(--color-accent-orange);
  transform: rotate(-1.5deg);
  font-style: italic;
}

.page-about .about-hero__lead {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--color-text-secondary);
  max-width: 36em;
  margin-bottom: 2rem;
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: 560px;
}

.page-about .about-hero__stat {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent-orange);
  border-radius: 4px;
  padding: 0.85rem 1rem;
  backdrop-filter: blur(4px);
}

.page-about .about-hero__stat dt {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 0.2rem;
}

.page-about .about-hero__stat dd {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--color-text-primary);
  margin: 0;
}

.page-about .about-hero__stat .data-number {
  color: var(--color-accent-cyan);
}

/* ===== 01 我们为什么叫星空 ===== */
.page-about .about-brand {
  position: relative;
  padding: 4rem 1.5rem;
}

.page-about .about-brand::before {
  content: '01';
  position: absolute;
  top: 1.5rem;
  right: 1.25rem;
  font-family: var(--font-mono);
  font-size: clamp(4.5rem, 12vw, 7.5rem);
  font-weight: 700;
  line-height: 1;
  color: rgba(255, 107, 53, 0.05);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-brand__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  position: relative;
  z-index: 1;
}

.page-about .about-brand__text h2 {
  font-size: clamp(1.5rem, 4.5vw, 2.25rem);
  margin: 0.5rem 0 1.25rem;
  position: relative;
}

.page-about .about-brand__text h2::after {
  content: '';
  display: block;
  width: 3.2rem;
  height: 3px;
  background: var(--color-accent-orange);
  margin-top: 0.75rem;
}

.page-about .about-brand__text p {
  line-height: 1.9;
  color: var(--color-text-secondary);
  margin-bottom: 1rem;
  font-size: 0.98rem;
}

.page-about .about-brand__quote {
  margin: 1.5rem 0 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--color-accent-cyan);
  background: rgba(0, 229, 255, 0.06);
  font-size: 1rem;
  color: var(--color-text-primary);
  border-radius: 0 8px 8px 0;
  font-style: normal;
}

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

.page-about .about-brand__img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.35);
}

.page-about .about-brand__figure::after {
  content: '';
  position: absolute;
  right: -0.75rem;
  bottom: -0.75rem;
  width: 6rem;
  height: 6rem;
  border-right: 2px solid var(--color-accent-orange);
  border-bottom: 2px solid var(--color-accent-orange);
  border-radius: 0 0 10px 0;
  z-index: -1;
}

.page-about .about-brand__caption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ===== 斜切分隔线 ===== */
.page-about .about-divider {
  position: relative;
  height: 2.5rem;
  overflow: hidden;
  background: var(--color-space-black);
}

.page-about .about-divider::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(115deg, transparent 42%, var(--color-space-violet) 46%, var(--color-space-violet) 54%, transparent 58%);
  opacity: 0.55;
}

/* ===== 02 发展轨迹 ===== */
.page-about .about-timeline {
  position: relative;
  background: var(--color-space-dark);
  padding: 4rem 1.5rem;
}

.page-about .about-timeline::before {
  content: '2016—2024';
  position: absolute;
  bottom: 2.5rem;
  right: 0.75rem;
  font-family: var(--font-mono);
  font-size: clamp(3.8rem, 10vw, 6.5rem);
  font-weight: 700;
  line-height: 1;
  color: rgba(224, 224, 255, 0.04);
  pointer-events: none;
  white-space: nowrap;
}

.page-about .about-timeline__head {
  max-width: 42em;
  margin-bottom: 2.5rem;
  position: relative;
  z-index: 1;
}

.page-about .about-timeline__head h2 {
  font-size: clamp(1.5rem, 4.5vw, 2.25rem);
  margin: 0.5rem 0 0.75rem;
}

.page-about .about-timeline__head h2::after {
  content: '';
  display: block;
  width: 3.2rem;
  height: 3px;
  background: var(--color-accent-orange);
  margin-top: 0.75rem;
}

.page-about .about-timeline__desc {
  color: var(--color-text-secondary);
  line-height: 1.75;
  font-size: 0.98rem;
}

.page-about .about-timeline__list {
  position: relative;
  list-style: none;
  margin: 0 0 2.5rem;
  padding: 0;
  z-index: 1;
}

.page-about .about-timeline__list::before {
  content: '';
  position: absolute;
  left: 0.75rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(
    var(--color-accent-orange) 0%,
    var(--color-space-violet) 35%,
    var(--color-accent-cyan) 100%
  );
  border-radius: 1px;
  opacity: 0.6;
}

.page-about .about-timeline__item {
  position: relative;
  padding: 0 0 2rem 2.5rem;
}

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

.page-about .about-timeline__node {
  position: absolute;
  left: 0.3125rem;
  top: 1.35rem;
  width: 0.875rem;
  height: 0.875rem;
  background: var(--color-space-dark);
  border: 2px solid var(--color-accent-orange);
  transform: rotate(45deg);
  border-radius: 2px;
  box-shadow: 0 0 8px rgba(255, 107, 53, 0.35);
}

.page-about .about-timeline__card {
  background: var(--about-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.page-about .about-timeline__card:hover {
  transform: translateX(4px);
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.page-about .about-timeline__year {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-accent-orange);
  background: var(--about-accent-orange-soft);
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: 999px;
  margin-bottom: 0.5rem;
}

.page-about .about-timeline__year::before {
  content: '◇';
  font-size: 0.6rem;
}

.page-about .about-timeline__card h3 {
  margin: 0.35rem 0 0.4rem;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--color-text-primary);
}

.page-about .about-timeline__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.page-about .about-timeline__figure {
  margin: 3rem 0 0;
  position: relative;
  z-index: 1;
}

.page-about .about-timeline__figure::before {
  content: '';
  position: absolute;
  left: -0.75rem;
  top: -0.75rem;
  width: 6rem;
  height: 6rem;
  border-left: 2px solid var(--color-accent-cyan);
  border-top: 2px solid var(--color-accent-cyan);
  border-radius: 10px 0 0 0;
  z-index: -1;
}

.page-about .about-timeline__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 10px;
  border: 1px solid var(--color-border);
}

.page-about .about-timeline__figure figcaption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ===== 03 使命与技术信念 ===== */
.page-about .about-mission {
  position: relative;
  padding: 5rem 1.5rem;
  margin: 3rem 0 0;
  background:
    radial-gradient(circle at 80% 15%, rgba(0, 229, 255, 0.08) 0%, transparent 30%),
    linear-gradient(155deg, var(--color-space-navy) 0%, var(--color-space-violet) 100%);
  clip-path: polygon(0 2rem, 100% 0, 100% calc(100% - 2rem), 0 100%);
}

.page-about .about-mission .container {
  position: relative;
  z-index: 1;
}

.page-about .about-mission__head {
  max-width: 44em;
  margin-bottom: 2.5rem;
}

.page-about .about-mission__head h2 {
  font-size: clamp(1.5rem, 4.5vw, 2.25rem);
  margin: 0.5rem 0 0.75rem;
}

.page-about .about-mission__head h2::after {
  content: '';
  display: block;
  width: 3.2rem;
  height: 3px;
  background: var(--color-accent-orange);
  margin-top: 0.75rem;
}

.page-about .about-mission__statement {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--color-text-primary);
  font-weight: 600;
}

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

.page-about .about-mission__card {
  position: relative;
  background: rgba(11, 10, 26, 0.62);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 1.6rem 1.4rem 1.4rem;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  overflow: hidden;
}

.page-about .about-mission__card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-cyan));
  opacity: 0.7;
}

.page-about .about-mission__card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 229, 255, 0.4);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.35), 0 0 0 1px rgba(0, 229, 255, 0.15);
}

.page-about .about-mission__num {
  position: absolute;
  top: 0.75rem;
  right: 1rem;
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  color: rgba(224, 224, 255, 0.12);
  line-height: 1;
}

.page-about .about-mission__card h3 {
  margin: 0.5rem 0 0.5rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--color-text-primary);
  letter-spacing: 0.06em;
}

.page-about .about-mission__card h3::before {
  content: '// ';
  color: var(--color-accent-cyan);
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.page-about .about-mission__card p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
}

/* ===== 04 团队与文化 ===== */
.page-about .about-team {
  position: relative;
  padding: 4.5rem 1.5rem;
}

.page-about .about-team::before {
  content: '04';
  position: absolute;
  bottom: 2rem;
  left: 1rem;
  font-family: var(--font-mono);
  font-size: clamp(4.5rem, 12vw, 7rem);
  font-weight: 700;
  line-height: 1;
  color: rgba(0, 229, 255, 0.045);
  pointer-events: none;
}

.page-about .about-team__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

.page-about .about-team__content h2 {
  font-size: clamp(1.5rem, 4.5vw, 2.25rem);
  margin: 0.5rem 0 1rem;
}

.page-about .about-team__content h2::after {
  content: '';
  display: block;
  width: 3.2rem;
  height: 3px;
  background: var(--color-accent-orange);
  margin-top: 0.75rem;
}

.page-about .about-team__content > p {
  line-height: 1.85;
  color: var(--color-text-secondary);
  font-size: 0.98rem;
  margin-bottom: 1.25rem;
}

.page-about .about-team__facts {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem;
}

.page-about .about-team__facts li {
  position: relative;
  padding: 0.55rem 0 0.55rem 1.75rem;
  line-height: 1.7;
  font-size: 0.94rem;
  color: var(--color-text-primary);
  border-bottom: 1px dashed rgba(61, 30, 109, 0.35);
}

.page-about .about-team__facts li:last-child {
  border-bottom: none;
}

.page-about .about-team__facts li::before {
  content: '◆';
  position: absolute;
  left: 0;
  top: 0.65rem;
  color: var(--color-accent-orange);
  font-size: 0.6rem;
}

.page-about .about-team__note {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  background: rgba(0, 229, 255, 0.05);
  border-left: 2px solid var(--color-accent-cyan);
  padding: 0.8rem 1rem;
  border-radius: 0 8px 8px 0;
}

.page-about .about-team__note a {
  color: var(--color-accent-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, 0.3);
  transition: border-color var(--transition-fast);
}

.page-about .about-team__note a:hover {
  border-bottom-color: var(--color-accent-cyan);
}

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

.page-about .about-team__figure::after {
  content: '';
  position: absolute;
  left: -0.75rem;
  bottom: -0.75rem;
  width: 5.5rem;
  height: 5.5rem;
  border-left: 2px solid var(--color-accent-orange);
  border-bottom: 2px solid var(--color-accent-orange);
  border-radius: 0 0 0 10px;
  z-index: -1;
}

.page-about .about-team__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.3);
}

.page-about .about-team__figure figcaption {
  margin-top: 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ===== CTA ===== */
.page-about .about-cta {
  position: relative;
  padding: 4.5rem 1.5rem;
  margin-top: 1rem;
  background:
    radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.14) 0%, transparent 32%),
    radial-gradient(circle at 80% 20%, rgba(0, 229, 255, 0.12) 0%, transparent 32%),
    linear-gradient(140deg, var(--color-space-navy) 0%, var(--color-space-black) 70%);
}

.page-about .about-cta::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-orange), var(--color-accent-cyan), var(--color-accent-orange));
  opacity: 0.7;
  background-size: 200% 100%;
  animation: about-cta-shift 6s ease-in-out infinite alternate;
}

@keyframes about-cta-shift {
  0% { background-position: 0% 0; }
  100% { background-position: 100% 0; }
}

.page-about .about-cta__inner {
  text-align: center;
}

.page-about .about-cta__inner h2 {
  font-size: clamp(1.6rem, 4.8vw, 2.5rem);
  margin: 0 0 0.75rem;
  font-weight: 900;
}

.page-about .about-cta__inner > p {
  color: var(--color-text-secondary);
  font-size: 0.98rem;
  margin-bottom: 1.75rem;
}

.page-about .about-cta__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.85rem;
}

.page-about .about-cta__actions .btn {
  min-width: 8.5rem;
  text-align: center;
}

.page-about .about-cta__actions .btn--ghost {
  border-color: rgba(0, 229, 255, 0.5);
  color: var(--color-accent-cyan);
}

.page-about .about-cta__actions .btn--ghost:hover {
  background: rgba(0, 229, 255, 0.1);
}

/* ===== 平板 768px ===== */
@media (min-width: 768px) {
  .page-about .about-hero {
    padding: calc(var(--header-height) + 2.5rem) 1.5rem 5rem;
  }

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

  .page-about .about-brand__grid {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3rem;
    align-items: center;
  }

  .page-about .about-brand__text {
    order: 1;
  }

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

  .page-about .about-timeline__list {
    margin-bottom: 3.5rem;
  }

  .page-about .about-timeline__item {
    padding-bottom: 2.25rem;
  }

  .page-about .about-timeline__card {
    border-radius: 10px;
    padding: 1.3rem 1.5rem;
  }

  .page-about .about-mission__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }

  .page-about .about-team__figure {
    order: 1;
  }

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

/* ===== 桌面 1024px ===== */
@media (min-width: 1024px) {
  .page-about .about-brand__grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 4rem;
  }

  .page-about .about-brand__figure {
    transform: translateY(1rem);
  }

  .page-about .about-timeline__list {
    margin: 3.5rem 0 4rem;
  }

  .page-about .about-timeline__list::before {
    left: 50%;
    transform: translateX(-1px);
  }

  .page-about .about-timeline__item {
    width: 50%;
    padding: 0 3rem 2.75rem 0;
    text-align: right;
  }

  .page-about .about-timeline__item:nth-child(even) {
    margin-left: 50%;
    padding: 0 0 2.75rem 3rem;
    text-align: left;
  }

  .page-about .about-timeline__node {
    left: auto;
    right: -0.4375rem;
    top: 1.5rem;
  }

  .page-about .about-timeline__item:nth-child(even) .about-timeline__node {
    right: auto;
    left: -0.4375rem;
  }

  .page-about .about-timeline__card:hover {
    transform: translateY(-4px);
  }

  .page-about .about-timeline__figure {
    text-align: center;
  }

  .page-about .about-timeline__figure img {
    width: 100%;
    max-width: 880px;
    margin-inline: auto;
  }

  .page-about .about-mission {
    margin: 4.5rem 0 0;
    padding: 6rem 1.5rem;
  }

  .page-about .about-mission__grid {
    gap: 1.5rem;
  }

  .page-about .about-team {
    padding: 5.5rem 1.5rem;
  }

  .page-about .about-team__grid {
    gap: 4.5rem;
  }

  .page-about .about-cta {
    padding: 5.5rem 1.5rem;
  }
}