/* ===== 品牌概况页专属样式 ===== */

.page-about__breadcrumb {
  margin-bottom: var(--sp-7);
}

/* Hero */
.page-about__hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(900px 400px at 85% -20%, rgba(255, 77, 0, 0.35) 0%, transparent 60%),
    radial-gradient(600px 300px at 10% 110%, rgba(255, 215, 0, 0.08) 0%, transparent 55%),
    linear-gradient(135deg, var(--deep-space) 0%, #0d1230 55%, var(--deep-space) 100%);
  border-bottom: 3px solid var(--primary);
}

.page-about__hero::after {
  content: "";
  position: absolute;
  right: -90px;
  top: 50px;
  width: 280px;
  height: 280px;
  border: 1px solid rgba(255, 77, 0, 0.3);
  border-radius: 50%;
  pointer-events: none;
}

.page-about__hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--sp-7);
  align-items: center;
}

.page-about__kicker {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.18em;
  color: var(--electric-yellow);
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}

.page-about__hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  line-height: 1.12;
  color: #fff;
  margin: 0 0 var(--sp-4);
}

.page-about__hero-accent {
  color: var(--primary);
}

.page-about__hero-lead {
  font-size: 1.05rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.78);
  max-width: 54ch;
  margin-bottom: var(--sp-6);
}

.page-about__hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.page-about__hero .breadcrumb__link,
.page-about__hero .breadcrumb__item {
  color: rgba(255, 255, 255, 0.66);
}

.page-about__hero .breadcrumb__link:hover,
.page-about__hero .breadcrumb__item[aria-current="page"] {
  color: var(--electric-yellow);
}

.page-about__hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--sp-3);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--r-lg);
  padding: var(--sp-4);
}

.page-about__stat {
  min-width: 0;
  padding: var(--sp-3);
  border-left: 2px solid var(--primary);
  background: rgba(255, 77, 0, 0.06);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.page-about__stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--electric-yellow);
}

.page-about__stat-label {
  display: block;
  margin-top: var(--sp-2);
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.66);
}

/* 品牌起源 */
.page-about__origin-grid {
  display: grid;
  gap: var(--sp-7);
  align-items: center;
}

.page-about__origin-copy .tag,
.page-about__team-copy .tag,
.page-about__partners-copy .tag {
  margin-bottom: var(--sp-4);
}

.page-about .section__title {
  margin-bottom: var(--sp-4);
}

.page-about__origin-copy p,
.page-about__team-copy p,
.page-about__partners-copy > p {
  color: var(--muted-ink);
  line-height: 1.8;
  margin-bottom: var(--sp-4);
}

.page-about__origin-facts {
  list-style: none;
  margin-top: var(--sp-5);
  border-top: 1px solid var(--line);
}

.page-about__origin-facts li {
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink);
  line-height: 1.6;
}

.page-about__origin-facts li::before {
  content: "›";
  color: var(--primary);
  font-weight: 700;
  margin-right: var(--sp-2);
}

.page-about__origin-media,
.page-about__team-media,
.page-about__partner-media {
  margin: 0;
  min-width: 0;
}

.page-about__origin-media {
  padding: var(--sp-4);
  background: linear-gradient(135deg, rgba(255, 77, 0, 0.08), rgba(255, 215, 0, 0.05));
  border-radius: var(--r-lg);
}

.page-about__origin-img {
  border: 1px solid var(--line);
}

/* 发展里程碑 */
.page-about__milestones-head {
  margin-bottom: var(--sp-7);
}

.page-about__milestones-head .tag {
  margin-bottom: var(--sp-3);
}

.page-about__milestones-lead {
  color: rgba(255, 255, 255, 0.65);
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 46ch;
}

.page-about__timeline {
  position: relative;
  max-width: 840px;
}

.page-about__timeline::before {
  content: "";
  position: absolute;
  left: 73px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary) 0%, var(--electric-yellow) 45%, rgba(255, 215, 0, 0.2) 100%);
  border-radius: 2px;
}

.page-about__timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 64px 20px 1fr;
  gap: 8px 12px;
  padding-bottom: var(--sp-6);
}

.page-about__timeline-year {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--primary);
  text-align: right;
  padding-top: 8px;
}

.page-about__timeline-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--electric-yellow);
  box-shadow: 0 0 0 4px rgba(255, 215, 0, 0.18);
  align-self: start;
  margin-top: 14px;
  position: relative;
  z-index: 1;
}

.page-about__timeline-card {
  border-left: 3px solid var(--primary);
  border-radius: 0 var(--r-md) var(--r-md) 0;
}

.page-about__timeline-card h3,
.page-about__capability-card h3 {
  color: var(--ink);
  font-size: 1.08rem;
  margin-bottom: var(--sp-2);
}

.page-about__timeline-card p {
  font-size: 0.94rem;
  line-height: 1.75;
  color: var(--muted-ink);
  margin: 0;
}

/* 数据服务能力 */
.page-about__capabilities-head {
  max-width: 640px;
  margin-bottom: var(--sp-7);
}

.page-about__capabilities-head .tag {
  margin-bottom: var(--sp-4);
}

.page-about__capability-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

.page-about__capability-card {
  min-width: 0;
  position: relative;
  overflow: hidden;
}

.page-about__capability-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--electric-yellow) 100%);
}

.page-about__capability-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.15;
  color: var(--primary);
  margin-bottom: var(--sp-3);
}

.page-about__capability-card h3 {
  font-size: 1.02rem;
}

.page-about__capability-card p {
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--muted-ink);
  margin: 0;
}

/* 团队与组织 */
.page-about__team-grid {
  display: grid;
  gap: var(--sp-7);
  align-items: center;
}

.page-about__team-media {
  padding: var(--sp-4);
  background: var(--deep-space);
  border-radius: var(--r-lg);
}

.page-about__team-img {
  border: 1px solid rgba(255, 255, 255, 0.14);
}

.page-about__team-list {
  list-style: none;
  margin-top: var(--sp-5);
}

.page-about__team-list li {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--line);
  transition: transform var(--t-base), border-color var(--t-base);
}

.page-about__team-list li:last-child {
  border-bottom: none;
}

.page-about__team-list li:hover {
  transform: translateX(6px);
  border-color: var(--primary);
}

.page-about__team-role {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--primary);
}

.page-about__team-list li > span:last-child {
  flex: 1;
  min-width: 0;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--muted-ink);
}

/* 资质与认证 */
.page-about__cert-head {
  max-width: 640px;
  margin-bottom: var(--sp-7);
}

.page-about__cert-head .tag {
  margin-bottom: var(--sp-4);
}

.page-about__cert-lead {
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
  margin: 0;
}

.page-about__cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

.page-about__cert-card {
  min-width: 0;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  transition: transform var(--t-base), border-color var(--t-base), background var(--t-base);
}

.page-about__cert-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 215, 0, 0.45);
  background: rgba(255, 255, 255, 0.07);
}

.page-about__cert-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: var(--r-md);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.8rem;
  margin-bottom: var(--sp-4);
}

.page-about__cert-card h3 {
  font-size: 1.02rem;
  line-height: 1.45;
  color: #fff;
  margin-bottom: var(--sp-2);
}

.page-about__cert-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.58);
  margin: 0;
}

/* 合作伙伴 */
.page-about__partners-grid {
  display: grid;
  gap: var(--sp-7);
  align-items: center;
}

.page-about__partner-types {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
  margin: var(--sp-6) 0;
}

.page-about__partner-type {
  min-width: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: var(--sp-4) var(--sp-5);
  transition: transform var(--t-base), box-shadow var(--t-base);
}

.page-about__partner-type:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 30px rgba(10, 14, 39, 0.08);
}

.page-about__partner-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--primary);
  margin-bottom: var(--sp-2);
}

.page-about__partner-type p {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--muted-ink);
  margin: 0;
}

.page-about__partner-media {
  position: relative;
}

.page-about__partner-media::before {
  content: "";
  position: absolute;
  top: -14px;
  left: -14px;
  width: 56%;
  height: 56%;
  border-top: 3px solid var(--primary);
  border-left: 3px solid var(--primary);
  border-radius: var(--r-lg) 0 0 0;
  z-index: 0;
}

.page-about__partner-img {
  position: relative;
  z-index: 1;
}

/* 收尾行动 */
.page-about__cta {
  background:
    radial-gradient(760px 320px at 18% 0%, rgba(255, 77, 0, 0.28) 0%, transparent 60%),
    radial-gradient(620px 280px at 82% 100%, rgba(255, 215, 0, 0.12) 0%, transparent 60%),
    var(--deep-space);
}

.page-about__cta-inner {
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

.page-about__cta-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 900;
  font-style: italic;
  color: #fff;
  margin: 0 0 var(--sp-6);
}

.page-about__cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  justify-content: center;
}

/* 桌面增强 */
@media (min-width: 640px) {
  .page-about__hero-stats {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-about__stat-num {
    font-size: 1.9rem;
  }

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

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

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

@media (min-width: 768px) {
  .page-about__origin-grid,
  .page-about__team-grid {
    grid-template-columns: 0.95fr 1.05fr;
    gap: var(--sp-8);
  }

  .page-about__team-list li {
    flex-direction: row;
    align-items: baseline;
    gap: var(--sp-4);
  }

  .page-about__team-role {
    flex: 0 0 92px;
  }

  .page-about__timeline-item {
    grid-template-columns: 96px 28px 1fr;
    gap: 16px;
    padding-bottom: var(--sp-7);
  }

  .page-about__timeline::before {
    left: 109px;
  }

  .page-about__timeline-year {
    padding-top: 12px;
    font-size: 1.05rem;
  }

  .page-about__timeline-dot {
    width: 12px;
    height: 12px;
    margin-top: 18px;
  }
}

@media (min-width: 900px) {
  .page-about__partners-grid {
    grid-template-columns: 1.05fr 0.95fr;
    gap: var(--sp-8);
  }
}

@media (min-width: 992px) {
  .page-about__hero-inner {
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--sp-8);
  }

  .page-about__capability-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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