/* ========== 品牌档案页专属样式 ========== */

.page-about {
  --ab-hero-num-size: clamp(6rem, 18vw, 15rem);
  --ab-gap: clamp(2.5rem, 6vw, 4rem);
}

/* ---- 首屏英雄区 ---- */
.page-about .page-about__hero {
  position: relative;
  min-height: 86vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
  background:
    linear-gradient(rgba(0, 255, 163, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 163, 0.05) 1px, transparent 1px),
    linear-gradient(135deg, var(--color-primary) 0%, var(--color-ink) 100%);
  background-size: 48px 48px, 48px 48px, auto;
}

.page-about .page-about__hero::before {
  content: "OB";
  position: absolute;
  right: -0.05em;
  bottom: -0.12em;
  font-family: var(--font-display);
  font-size: var(--ab-hero-num-size);
  line-height: 1;
  color: rgba(0, 255, 163, 0.06);
  pointer-events: none;
  user-select: none;
  z-index: 0;
}

.page-about .page-about__hero-inner {
  position: relative;
  z-index: 1;
  padding-bottom: 64px;
}

.page-about .page-about__hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.page-about .page-about__hero-meta span::before {
  content: "◆ ";
  color: var(--color-accent-2);
}

/* ---- 品牌故事 ---- */
.page-about .page-about__story {
  background: var(--color-bg-light);
}

.page-about .page-about__story-grid {
  display: grid;
  gap: var(--ab-gap);
}

.page-about .page-about__story-head {
  border-bottom: 2px solid var(--color-primary);
  padding-bottom: 12px;
}

.page-about .page-about__story-body {
  display: grid;
  gap: 32px;
}

.page-about .page-about__story-cols {
  display: grid;
  gap: 1.5rem;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-text);
}

.page-about .page-about__story-cols strong {
  font-weight: 600;
}

.page-about .page-about__story-media {
  max-width: 420px;
  margin: 0;
  align-self: start;
}

.page-about .page-about__story-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---- 发展时间轴 ---- */
.page-about .page-about__milestone {
  background: var(--color-primary);
}

.page-about .page-about__section-head {
  max-width: 640px;
  margin-bottom: 48px;
}

.page-about .page-about__timeline .timeline__item {
  padding-bottom: 36px;
}

.page-about .page-about__timeline .timeline__meta {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.page-about .page-about__timeline .timeline__item:hover .timeline__title {
  color: var(--color-accent-2);
}

/* ---- 资质认证 ---- */
.page-about .page-about__cert {
  background: var(--color-ink);
}

.page-about .page-about__cert-grid {
  display: grid;
  gap: 40px;
}

.page-about .page-about__cert-card {
  position: relative;
  border: 1px solid rgba(0, 255, 163, 0.28);
  background: rgba(11, 29, 42, 0.55);
  padding: 32px;
}

.page-about .page-about__cert-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--color-accent);
}

.page-about .page-about__cert-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  color: var(--color-accent-2);
  text-transform: uppercase;
}

.page-about .page-about__cert-number {
  display: block;
  margin: 10px 0 14px;
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3.4vw, 2.6rem);
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  word-break: break-all;
}

.page-about .page-about__cert-text,
.page-about .page-about__cert-note {
  color: rgba(245, 243, 239, 0.82);
  line-height: 1.85;
}

.page-about .page-about__cert-note {
  margin-top: 24px;
  padding-left: 20px;
  border-left: 3px solid var(--color-accent-2);
}

/* ---- 核心数据 ---- */
.page-about .page-about__data {
  background: var(--color-bg-light);
}

.page-about .page-about__data-head {
  max-width: 600px;
  margin-bottom: 36px;
}

.page-about .page-about__data-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-bottom: 40px;
}

.page-about .page-about__data-media {
  aspect-ratio: 2 / 1;
  margin: 0;
  overflow: hidden;
}

.page-about .page-about__data-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---- 团队介绍 ---- */
.page-about .page-about__team {
  background: linear-gradient(135deg, var(--color-accent-3) 0%, var(--color-primary) 75%);
}

.page-about .page-about__team-grid {
  display: grid;
  gap: 40px;
}

.page-about .page-about__team-main {
  color: rgba(245, 243, 239, 0.84);
  line-height: 1.9;
}

.page-about .page-about__team-media {
  margin: 28px 0 0;
  overflow: hidden;
}

.page-about .page-about__team-media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---- 底部 CTA ---- */
.page-about .page-about__cta {
  background: var(--color-accent-2);
  padding: 80px 0;
}

.page-about .page-about__cta-inner {
  display: grid;
  gap: 18px;
  justify-items: start;
}

.page-about .page-about__cta-inner .section-eyebrow--light,
.page-about .page-about__cta-inner .section-title--light {
  color: var(--color-primary);
}

.page-about .page-about__cta-text,
.page-about .page-about__cta-extra {
  color: rgba(18, 26, 36, 0.85);
  line-height: 1.8;
  max-width: 640px;
}

.page-about .page-about__cta-extra a {
  color: var(--color-ink);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.page-about .page-about__cta-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 12px;
}

.page-about .page-about__cta-links .btn--primary {
  background: var(--color-primary);
  color: var(--color-accent);
  border-color: var(--color-primary);
}

.page-about .page-about__cta-links .btn--outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ---- 桌面端布局 ---- */
@media (min-width: 800px) {

  .page-about .page-about__story-grid {
    grid-template-columns: 1fr 1.6fr;
    gap: 72px;
  }

  .page-about .page-about__story-body {
    grid-template-columns: 1.1fr 0.9fr;
    gap: 48px;
    align-items: start;
  }

  .page-about .page-about__cert-grid {
    grid-template-columns: 0.8fr 1.2fr;
    gap: 72px;
  }

  .page-about .page-about__cert-main {
    padding-top: 8px;
  }

  .page-about .page-about__data-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .page-about__team-grid {
    grid-template-columns: 0.9fr 1.1fr;
    gap: 72px;
  }

  .page-about .page-about__team-media {
    margin-top: 32px;
  }

  .page-about .page-about__cta {
    padding: 96px 0;
  }
}