/* ===== 品牌档案 page-about ===== */
.page-about {
  --about-gold: #D4AF37;
  --about-purple: #3B1D5E;
  --about-deep: #0C0712;
  --about-surface: #1A0B2E;
  color: var(--text-high);
  background: var(--background);
  overflow-x: hidden;
}

/* ---------- Hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: calc(var(--header-h) + 24px) 20px 72px;
  background:
    radial-gradient(ellipse at 80% 20%, rgba(107, 79, 160, 0.45) 0%, transparent 55%),
    linear-gradient(135deg, #160927 0%, var(--primary-900) 45%, var(--neutral-900) 100%);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
  overflow: hidden;
}

.page-about .about-hero::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.page-about .about-hero-breadcrumbs {
  margin-bottom: 56px;
  position: relative;
  z-index: 2;
}

.page-about .about-hero-grid {
  display: grid;
  gap: 48px;
  position: relative;
  z-index: 2;
}

.page-about .about-hero-eyebrow {
  margin-bottom: 20px;
}

.page-about .about-hero h1 {
  font-family: var(--font-headline);
  font-size: clamp(40px, 8vw, 84px);
  line-height: 1.08;
  margin: 0 0 24px;
  letter-spacing: -0.01em;
  max-width: 12em;
}

.page-about .about-hero-lead {
  font-family: var(--font-headline);
  font-size: clamp(18px, 2.5vw, 26px);
  line-height: 1.6;
  color: var(--neutral-400);
  max-width: 26em;
  margin-bottom: 44px;
}

.page-about .about-hero-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 28px 48px;
  border-top: 1px solid rgba(212, 175, 55, 0.25);
  padding-top: 28px;
}

.page-about .about-hero-stats div {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-about .about-hero-stats strong {
  font-family: var(--font-headline);
  font-size: 34px;
  color: var(--gold-400);
  line-height: 1;
}

.page-about .about-hero-stats span {
  font-size: 13px;
  color: var(--neutral-400);
  letter-spacing: 0.08em;
}

.page-about .about-hero-deco {
  display: none;
}

@media (min-width: 900px) {
  .page-about .about-hero {
    padding-top: calc(var(--header-h) + 48px);
    padding-bottom: 120px;
  }

  .page-about .about-hero-grid {
    grid-template-columns: minmax(0, 1fr) 280px;
    align-items: center;
    gap: 24px;
  }

  .page-about .about-hero-deco {
    display: block;
    text-align: center;
    font-family: var(--font-headline);
    font-size: 220px;
    line-height: 1;
    color: rgba(212, 175, 55, 0.05);
    -webkit-text-stroke: 1px rgba(212, 175, 55, 0.18);
    user-select: none;
    pointer-events: none;
  }
}

/* ---------- Section 01 关于彩娱殿堂 ---------- */
.page-about .about-story {
  background: var(--neutral-900);
  position: relative;
  padding-top: 80px;
  padding-bottom: 96px;
}

.page-about .about-story-grid {
  display: grid;
  gap: 56px;
  align-items: start;
}

.page-about .about-story-lead {
  font-family: var(--font-headline);
  font-size: clamp(20px, 3vw, 28px);
  color: var(--text-high);
  line-height: 1.4;
  margin-top: 20px;
}

.page-about .about-story-prose {
  margin-top: 24px;
}

.page-about .about-story-prose p + p {
  margin-top: 16px;
}

.page-about .about-values {
  margin-top: 44px;
  padding-top: 44px;
  border-top: 1px solid var(--purple-line);
  display: grid;
  gap: 28px;
}

.page-about .about-value-item {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: 16px;
  align-items: start;
}

.page-about .about-value-no {
  font-family: var(--font-headline);
  font-size: 24px;
  color: var(--gold-400);
  line-height: 1.2;
}

.page-about .about-value-body h3 {
  font-family: var(--font-headline);
  font-size: 21px;
  margin: 0 0 8px;
  color: var(--text-high);
}

.page-about .about-value-body p {
  color: var(--neutral-400);
  line-height: 1.7;
  font-size: 15px;
  margin: 0;
}

.page-about .about-story-media {
  position: relative;
  max-width: 600px;
  margin: 0 auto;
}

.page-about .about-story-media::before {
  content: '';
  position: absolute;
  inset: -14px 14px 14px -14px;
  border: 1px solid rgba(212, 175, 55, 0.25);
  pointer-events: none;
  z-index: 0;
}

.page-about .about-brand-img {
  position: relative;
  z-index: 1;
  display: block;
  width: 100%;
  height: auto;
  border-radius: 2px;
  background: var(--primary-900);
}

@media (min-width: 900px) {
  .page-about .about-story {
    padding-top: 112px;
    padding-bottom: 132px;
  }

  .page-about .about-story-grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: 96px;
  }

  .page-about .about-values {
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
  }

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

/* ---------- Section 02 发展里程碑 ---------- */
.page-about .about-miles {
  background: linear-gradient(180deg, var(--neutral-900) 0%, var(--primary-900) 60%, var(--neutral-900) 100%);
  padding-top: 80px;
  padding-bottom: 100px;
}

.page-about .about-miles-subtitle {
  max-width: 46em;
}

.page-about .about-timeline-wrap {
  position: relative;
  margin-top: 56px;
}

.page-about .about-timeline-bg {
  display: none;
}

.page-about .about-timeline {
  position: relative;
  display: grid;
  gap: 32px;
  padding-left: 28px;
  border-left: 1px solid rgba(212, 175, 55, 0.22);
}

.page-about .about-timeline-item {
  position: relative;
}

.page-about .about-timeline-item::before {
  content: '';
  position: absolute;
  top: 6px;
  left: -33px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold-400);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.18);
  transition: box-shadow 0.3s var(--ease), background 0.3s var(--ease);
}

.page-about .about-timeline-item:hover::before {
  background: var(--gold-600);
  box-shadow: 0 0 0 6px rgba(212, 175, 55, 0.12);
}

.page-about .about-timeline-marker {
  display: inline-block;
  font-family: var(--font-headline);
  font-size: 22px;
  color: var(--gold-400);
  letter-spacing: 0.1em;
  margin-bottom: 10px;
}

.page-about .about-timeline-card {
  background: rgba(26, 11, 46, 0.65);
  border: 1px solid rgba(107, 79, 160, 0.35);
  padding: 22px;
  border-radius: 2px;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-timeline-card h3 {
  font-family: var(--font-headline);
  font-size: 20px;
  margin: 0 0 8px;
  color: var(--text-high);
}

.page-about .about-timeline-card p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--neutral-400);
  margin: 0;
}

.page-about .about-timeline-item:hover .about-timeline-card {
  border-color: rgba(212, 175, 55, 0.55);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  transform: translateY(-2px);
}

@media (min-width: 900px) {
  .page-about .about-miles {
    padding-top: 112px;
    padding-bottom: 132px;
  }

  .page-about .about-timeline-bg {
    display: block;
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1200px;
    height: auto;
    opacity: 0.25;
    z-index: 0;
    pointer-events: none;
  }

  .page-about .about-timeline {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    padding-left: 0;
    border-left: none;
  }

  .page-about .about-timeline::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 175, 55, 0.5) 12%, rgba(212, 175, 55, 0.5) 88%, transparent);
  }

  .page-about .about-timeline-item {
    padding-top: 48px;
    z-index: 1;
  }

  .page-about .about-timeline-item::before {
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
  }

  .page-about .about-timeline-item[data-reveal][data-reveal-delay="1"].is-visible {
    transition-delay: 0.1s;
  }

  .page-about .about-timeline-item[data-reveal][data-reveal-delay="2"].is-visible {
    transition-delay: 0.2s;
  }

  .page-about .about-timeline-item[data-reveal][data-reveal-delay="3"].is-visible {
    transition-delay: 0.3s;
  }
}

/* ---------- Section 03 团队与研发 ---------- */
.page-about .about-team {
  background: var(--neutral-900);
  padding-top: 80px;
  padding-bottom: 96px;
}

.page-about .about-team-grid {
  display: grid;
  gap: 48px;
  align-items: start;
}

.page-about .about-team-subtitle {
  max-width: 36em;
}

.page-about .about-team-prose {
  margin-top: 24px;
}

.page-about .about-team-prose p + p {
  margin-top: 16px;
}

.page-about .about-team-data {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.page-about .about-data-card {
  background: linear-gradient(160deg, rgba(26, 11, 46, 0.92), rgba(12, 7, 18, 0.95));
  border: 1px solid rgba(212, 175, 55, 0.32);
  border-radius: 2px;
  padding: 28px 18px;
  text-align: center;
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.02),
    0 0 18px rgba(0, 0, 0, 0.3);
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-about .about-data-card:hover {
  border-color: rgba(212, 175, 55, 0.65);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.03),
    0 0 26px rgba(212, 175, 55, 0.08);
  transform: translateY(-2px);
}

.page-about .about-data-num {
  display: block;
  font-family: var(--font-headline);
  font-size: 34px;
  line-height: 1.1;
  color: var(--gold-400);
  margin-bottom: 8px;
}

.page-about .about-data-label {
  display: block;
  font-size: 13px;
  color: var(--neutral-400);
  letter-spacing: 0.05em;
  line-height: 1.5;
}

.page-about .about-team-media {
  margin-top: 56px;
}

.page-about .about-team-img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 800px;
  border-radius: 2px;
  border: 1px solid rgba(107, 79, 160, 0.3);
  background: var(--primary-900);
}

@media (min-width: 900px) {
  .page-about .about-team {
    padding-top: 112px;
    padding-bottom: 132px;
  }

  .page-about .about-team-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
    gap: 72px;
  }

  .page-about .about-team-data {
    gap: 20px;
  }

  .page-about .about-team-media {
    margin-top: 56px;
  }
}

/* ---------- Section 04 合作生态 ---------- */
.page-about .about-eco {
  background: linear-gradient(180deg, var(--neutral-900) 0%, var(--surface) 50%, var(--neutral-900) 100%);
  padding-top: 80px;
  padding-bottom: 100px;
}

.page-about .about-eco-subtitle {
  max-width: 44em;
}

.page-about .about-eco-layout {
  display: grid;
  gap: 48px;
  align-items: center;
  margin-top: 48px;
}

.page-about .about-eco-text .prose p + p {
  margin-top: 16px;
}

.page-about .about-eco-link {
  margin-top: 32px;
}

.page-about .about-eco-visual {
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
}

.page-about .about-eco-svg {
  display: block;
  width: 100%;
  height: auto;
}

@media (min-width: 900px) {
  .page-about .about-eco {
    padding-top: 112px;
    padding-bottom: 132px;
  }

  .page-about .about-eco-layout {
    grid-template-columns: minmax(0, 5fr) minmax(0, 6fr);
    gap: 80px;
  }
}

/* ---------- CTA ---------- */
.page-about .about-cta {
  padding-top: 20px;
  padding-bottom: 100px;
}

.page-about .about-cta-box {
  display: grid;
  gap: 32px;
  padding: 44px 28px;
  background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(107, 79, 160, 0.1));
  border: 1px solid rgba(212, 175, 55, 0.25);
  border-radius: 2px;
  text-align: center;
}

.page-about .about-cta-box h2 {
  font-family: var(--font-headline);
  font-size: 32px;
  margin: 0 0 8px;
}

.page-about .about-cta-box p {
  color: var(--neutral-400);
  line-height: 1.7;
  margin: 0;
}

.page-about .about-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.page-about .about-cta-actions a {
  min-width: 132px;
}

@media (min-width: 720px) {
  .page-about .about-cta-box {
    grid-template-columns: 1fr auto;
    align-items: center;
    text-align: left;
    padding: 52px 56px;
    gap: 40px;
  }

  .page-about .about-cta-actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-about .about-cta {
    padding-bottom: 132px;
  }
}