/* LEYU手机中文站 · 品牌档案页专属样式 */
.page-about {
  --ab-ribbon-len: 160px;
  background: var(--color-cream);
  color: var(--color-ink);
}

/* 面包屑 */
.page-about .brand-context {
  background: var(--color-space);
  padding: 14px 0;
  border-bottom: 1px solid rgba(224, 247, 250, .14);
}

.page-about .brand-context .crumb-list {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 13px;
  color: rgba(224, 247, 250, .66);
}

.page-about .brand-context .crumb-link {
  color: var(--color-cyan);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-about .brand-context .crumb-link:hover {
  color: var(--color-orange);
}

.page-about .brand-context .crumb-current {
  color: var(--color-orange);
  font-weight: 600;
}

/* 章节骨架 */
.page-about .section {
  padding: 56px 0;
}

.page-about .section-heading {
  max-width: 820px;
  margin-bottom: 36px;
}

.page-about .section-heading.right-aligned {
  margin-left: auto;
  text-align: right;
}

.page-about .chapter-ribbon {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.page-about .chapter-ribbon .ribbon-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 52px;
  height: 52px;
  padding: 0 10px;
  background: var(--color-orange);
  color: var(--color-space);
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: .02em;
  border-radius: 2px 14px 2px 14px;
  box-shadow: 6px 6px 0 rgba(11, 27, 43, .10);
}

.page-about .chapter-ribbon .ribbon-label {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--color-ink);
  white-space: nowrap;
}

.page-about .chapter-ribbon .ribbon-line {
  flex: 0 1 var(--ab-ribbon-len);
  height: 4px;
  min-width: 36px;
  background: linear-gradient(90deg, var(--color-orange), var(--color-purple));
  border-radius: 2px;
}

.page-about .section-heading.right-aligned .chapter-ribbon {
  justify-content: flex-end;
  flex-direction: row-reverse;
}

.page-about .section-heading.right-aligned .ribbon-line {
  background: linear-gradient(270deg, var(--color-orange), var(--color-purple));
}

/* 标题与导语 */
.page-about .story-title,
.page-about .section-title {
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: .01em;
  color: var(--color-ink);
  margin: 0 0 12px;
}

.page-about .story-title {
  font-size: 34px;
  margin-bottom: 18px;
}

.page-about .section-title {
  font-size: 26px;
}

.page-about .section-lead {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(26, 26, 26, .72);
  margin: 0;
}

/* 图片框 */
.page-about .figure-frame {
  overflow: hidden;
  border-radius: 2px 18px 2px 18px;
  background: var(--color-space);
  box-shadow: var(--shadow-soft);
}

.page-about .figure-frame img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
}

/* 01 品牌故事 */
.page-about .brand-story {
  padding-top: 32px;
}

.page-about .story-intro {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-bottom: 28px;
}

.page-about .story-title-panel {
  padding-right: 8px;
}

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

.page-about .story-badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
  background: var(--color-ink);
  color: var(--color-cyan);
}

.page-about .story-copy {
  display: grid;
  gap: 16px;
  max-width: 860px;
}

.page-about .story-copy p {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(26, 26, 26, .8);
  margin: 0;
}

/* 02 发展里程碑 */
.page-about .milestone-section {
  padding-top: 24px;
}

.page-about .milestone-list {
  position: relative;
  padding: 8px 0 8px 28px;
  border-left: 3px solid rgba(11, 27, 43, .10);
}

.page-about .milestone-item {
  position: relative;
  padding: 0 0 28px 20px;
}

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

.page-about .milestone-item::before {
  content: '';
  position: absolute;
  left: -35px;
  top: 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 53, .18);
}

.page-about .milestone-num {
  font-family: var(--font-head);
  font-size: 30px;
  line-height: 1;
  font-weight: 800;
  color: var(--color-purple);
  margin-bottom: 8px;
  letter-spacing: .04em;
}

.page-about .milestone-content {
  background: var(--color-cream);
  border: 1px solid rgba(11, 27, 43, .1);
  border-radius: 2px 16px 2px 16px;
  padding: 18px 20px;
  box-shadow: 0 6px 16px rgba(11, 27, 43, .06);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.page-about .milestone-content:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 30px rgba(11, 27, 43, .12);
}

.page-about .milestone-content h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 0 0 8px;
  color: var(--color-ink);
}

.page-about .milestone-content p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  color: rgba(26, 26, 26, .76);
}

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

/* 03 数据覆盖能力 */
.page-about .capability-section {
  padding: 0;
  background: var(--color-space);
}

.page-about .capability-bg {
  position: relative;
  background: linear-gradient(140deg, #0B1B2B 0%, #07121D 58%, #102A42 100%);
  border-radius: 28px 4px 28px 4px;
  padding: 52px 20px 56px;
  color: var(--color-cyan);
  overflow: hidden;
}

.page-about .capability-bg::before {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(123, 47, 190, .34), transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .capability-bg::after {
  content: '';
  position: absolute;
  left: -80px;
  bottom: -120px;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(255, 107, 53, .16), transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.page-about .light-heading .section-title {
  color: var(--color-cyan);
}

.page-about .light-heading .section-lead {
  color: rgba(224, 247, 250, .7);
}

.page-about .light-heading .ribbon-label {
  color: rgba(224, 247, 250, .78);
}

.page-about .capability-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin: 28px 0;
}

.page-about .stat-panel {
  position: relative;
  z-index: 1;
  padding: 24px 20px;
  border-radius: 2px 16px 2px 16px;
  background: rgba(44, 79, 110, .42);
  border: 1px solid rgba(224, 247, 250, .12);
  transition: transform .3s var(--ease), background .3s var(--ease);
}

.page-about .stat-panel:hover {
  transform: translateY(-4px);
  background: rgba(44, 79, 110, .68);
}

.page-about .stat-desc {
  margin: 8px 0 0;
  font-size: 13px;
  color: rgba(224, 247, 250, .68);
}

.page-about .capability-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .feature-card {
  background: rgba(245, 239, 230, .96);
  border-radius: 2px 16px 2px 16px;
  padding: 22px;
  color: var(--color-ink);
  position: relative;
  z-index: 1;
}

.page-about .feature-card .feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  height: 30px;
  padding: 0 8px;
  background: var(--color-orange);
  color: var(--color-space);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 12px;
  border-radius: 2px 10px 2px 10px;
  margin-bottom: 14px;
}

.page-about .feature-card h3 {
  font-size: 17px;
  margin: 0 0 8px;
}

.page-about .feature-card p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
  color: rgba(26, 26, 26, .74);
}

/* 04 用户规模与口碑 */
.page-about .user-section {
  padding-top: 24px;
}

.page-about .user-proof {
  display: flex;
  flex-direction: column;
  gap: 24px;
  background: var(--color-space);
  border-radius: 20px 4px 20px 4px;
  padding: 32px 20px;
  color: var(--color-cyan);
  margin-bottom: 40px;
}

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

.page-about .proof-stat {
  text-align: center;
  padding: 18px 10px;
  border-radius: 2px 14px 2px 14px;
  background: rgba(255, 255, 255, .045);
  border: 1px solid rgba(224, 247, 250, .08);
  transition: background .3s var(--ease);
}

.page-about .proof-stat:hover {
  background: rgba(255, 107, 53, .12);
}

.page-about .proof-num {
  display: block;
  font-family: var(--font-head);
  font-size: 30px;
  font-weight: 800;
  color: var(--color-orange);
  letter-spacing: .02em;
}

.page-about .proof-label {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  color: rgba(224, 247, 250, .7);
}

.page-about .proof-note {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(224, 247, 250, .8);
  margin: 0;
}

.page-about .team-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.page-about .team-copy {
  padding: 24px;
  background: var(--color-cream);
  border: 1px solid rgba(11, 27, 43, .08);
  border-radius: 2px 18px 2px 18px;
}

.page-about .team-copy h3 {
  font-family: var(--font-head);
  font-size: 22px;
  margin: 8px 0 12px;
}

.page-about .team-copy p {
  font-size: 14px;
  line-height: 1.8;
  color: rgba(26, 26, 26, .76);
  margin: 0 0 12px;
}

/* 05 资质与合作 */
.page-about .credential-section {
  padding-top: 24px;
}

.page-about .credential-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.page-about .credential-card {
  position: relative;
  padding: 28px 22px 24px;
  background: var(--color-cream);
  border: 1px solid rgba(11, 27, 43, .1);
  border-radius: 2px 18px 2px 18px;
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.page-about .credential-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  height: 6px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-orange), var(--color-purple));
  opacity: .8;
}

.page-about .credential-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  height: 32px;
  padding: 0 8px;
  background: var(--color-space);
  color: var(--color-cyan);
  font-family: var(--font-head);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  border-radius: 2px 10px 2px 10px;
  margin-bottom: 16px;
}

.page-about .credential-card h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.page-about .credential-card p {
  font-size: 14px;
  line-height: 1.75;
  color: rgba(26, 26, 26, .74);
  margin: 0;
}

.page-about .contact-strip {
  display: flex;
  flex-direction: column;
  gap: 16px;
  align-items: flex-start;
  margin-top: 28px;
  padding: 24px 22px;
  background: var(--color-space);
  border-radius: 2px 18px 2px 18px;
  color: var(--color-cyan);
}

.page-about .contact-strip p {
  font-size: 14px;
  line-height: 1.7;
  margin: 0;
}

/* 探索入口 */
.page-about .explore-section {
  padding-bottom: 72px;
  padding-top: 16px;
}

.page-about .explore-lead {
  font-family: var(--font-head);
  font-size: 22px;
  line-height: 1.4;
  color: var(--color-ink);
  text-align: center;
  max-width: 680px;
  margin: 0 auto 24px;
}

.page-about .explore-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.page-about .explore-links .btn {
  min-width: 200px;
  text-align: center;
}

/* 桌面端 */
@media (min-width: 768px) {
  .page-about .section {
    padding: 72px 0;
  }

  .page-about .story-intro {
    display: grid;
    grid-template-columns: 1fr 1.05fr;
    gap: 40px;
    align-items: end;
    margin-bottom: 20px;
  }

  .page-about .story-title {
    font-size: 42px;
  }

  .page-about .section-title {
    font-size: 32px;
  }

  .page-about .story-copy {
    grid-template-columns: 1fr 1fr;
    gap: 28px 48px;
    max-width: 960px;
  }

  .page-about .milestone-section {
    padding-top: 32px;
  }

  .page-about .milestone-list {
    padding-left: 36px;
    margin-left: 14%;
  }

  .page-about .milestone-item {
    padding-left: 28px;
  }

  .page-about .milestone-media {
    margin-top: 44px;
    margin-left: auto;
    width: 78%;
  }

  .page-about .capability-bg {
    padding: 64px 44px 68px;
    border-radius: 36px 6px 36px 6px;
  }

  .page-about .capability-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
  }

  .page-about .capability-features {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }

  .page-about .user-proof {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 44px 32px;
  }

  .page-about .proof-stats {
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    flex: 1.2;
  }

  .page-about .proof-note {
    flex: 1;
    font-size: 15px;
  }

  .page-about .team-block {
    flex-direction: row;
    align-items: center;
    gap: 32px;
  }

  .page-about .team-copy {
    flex: 1;
  }

  .page-about .team-figure {
    flex: 1;
  }

  .page-about .credential-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .page-about .contact-strip {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .page-about .contact-strip p {
    max-width: 640px;
  }

  .page-about .explore-lead {
    font-size: 26px;
  }

  .page-about .explore-links {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
  }
}

@media (min-width: 1080px) {
  .page-about .milestone-list {
    margin-left: 22%;
  }

  .page-about .capability-stats {
    gap: 28px;
  }

  .page-about .capability-features {
    gap: 28px;
  }

  .page-about .proof-stats {
    gap: 32px;
  }
}