.page-about {
  background: var(--bibo-white);
  color: var(--bibo-gray-900);
  overflow-x: hidden;
}

.page-about .section {
  padding-top: 56px;
  padding-bottom: 56px;
}

/* ===== 首屏：品牌档案封面 ===== */
.page-about .about-hero {
  position: relative;
  padding-top: 40px;
  padding-bottom: 56px;
  background:
    radial-gradient(680px 320px at 88% -6%, rgba(0, 122, 255, 0.1), transparent 70%),
    var(--bibo-white);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.page-about .about-hero::after {
  content: "BRAND ARCHIVE / FILE 01 · 2025";
  position: absolute;
  right: 24px;
  bottom: 18px;
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--bibo-gray-500);
}

.page-about .about-breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
  font-size: 13px;
  color: var(--bibo-gray-500);
}

.page-about .about-breadcrumb a {
  color: var(--bibo-blue);
  text-decoration: none;
  transition: opacity 0.2s var(--ease);
}

.page-about .about-breadcrumb a:hover {
  opacity: 0.7;
}

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

.page-about .about-hero__title {
  position: relative;
  margin: 12px 0 18px;
  padding-bottom: 18px;
  max-width: 680px;
  font-size: 32px;
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-weight: 700;
}

.page-about .about-hero__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: var(--bibo-blue);
}

.page-about .about-hero__lead {
  margin: 0;
  max-width: 620px;
  font-size: 16px;
  line-height: 1.7;
  color: var(--bibo-gray-700);
}

.page-about .about-hero__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-lg);
  background: rgba(0, 0, 0, 0.06);
  overflow: hidden;
  box-shadow: 0 12px 28px -18px rgba(0, 0, 0, 0.2);
}

.page-about .about-hero__stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 18px 16px;
  background: var(--bibo-white);
}

.page-about .about-hero__num {
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bibo-blue);
}

.page-about .about-hero__note {
  margin: 0;
  font-size: 12px;
  line-height: 1.4;
  color: var(--bibo-gray-500);
}

/* ===== 章节标题共用 ===== */
.page-about .about-section-head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 32px;
}

.page-about .about-section-head .coord-index {
  margin-top: 5px;
  flex-shrink: 0;
}

.page-about .about-section-head .section-title {
  margin-top: 5px;
  font-size: 28px;
  line-height: 1.25;
  letter-spacing: -0.01em;
}

/* ===== 品牌故事 ===== */
.page-about .about-story {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.72), rgba(255, 255, 255, 0)),
    var(--bibo-gray-100);
}

.page-about .about-story__body {
  margin-top: 8px;
}

.page-about .about-story__lead-group {
  max-width: 640px;
}

.page-about .about-story__lead {
  margin: 0 0 24px;
  font-size: 18px;
  line-height: 1.7;
  color: var(--bibo-gray-700);
}

.page-about .about-quote {
  margin: 0 0 36px;
  padding: 22px 26px;
  border-left: 4px solid var(--bibo-blue);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  background: linear-gradient(90deg, rgba(0, 122, 255, 0.08), rgba(0, 122, 255, 0.01));
}

.page-about .about-quote p {
  margin: 0;
  font-size: 17px;
  line-height: 1.65;
  font-weight: 600;
  color: var(--bibo-gray-900);
}

.page-about .about-story .card {
  position: relative;
  z-index: 0;
  padding: 24px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-md);
  background: var(--bibo-white);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 12px 24px -18px rgba(0, 0, 0, 0.16);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-story .card::after {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 6px -7px -7px 6px;
  border-radius: var(--radius-md);
  background: rgba(0, 0, 0, 0.035);
}

.page-about .about-story .card:hover {
  transform: translateY(-3px);
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.05),
    0 20px 32px -18px rgba(0, 0, 0, 0.22);
}

.page-about .about-card__title {
  margin: 8px 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bibo-gray-900);
}

.page-about .about-card__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--bibo-gray-700);
}

/* ===== 发展历程 ===== */
.page-about .about-timeline {
  background: var(--bibo-white);
}

.page-about .about-figure {
  margin: 0 0 40px;
}

.page-about .about-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 18px 40px -20px rgba(0, 0, 0, 0.2);
}

.page-about .about-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
  color: var(--bibo-gray-500);
}

.page-about .about-timeline__list {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-about .about-timeline__list::before {
  content: "";
  position: absolute;
  top: 14px;
  bottom: 14px;
  left: 78px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--bibo-blue) 0%, rgba(0, 122, 255, 0.35) 60%, var(--bibo-green) 100%);
  opacity: 0.55;
}

.page-about .about-timeline__item {
  display: grid;
  grid-template-columns: 64px 30px 1fr;
  padding-bottom: 36px;
}

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

.page-about .about-timeline__year {
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
  font-size: 17px;
  font-weight: 700;
  line-height: 1;
  padding-top: 5px;
  padding-right: 12px;
  text-align: right;
  color: var(--bibo-gray-900);
}

.page-about .about-timeline__node {
  width: 12px;
  height: 12px;
  margin-top: 5px;
  justify-self: center;
  box-sizing: border-box;
  border: 3px solid var(--bibo-blue);
  border-radius: 50%;
  background: var(--bibo-white);
  box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.13);
}

.page-about .about-timeline__content {
  padding: 16px 18px;
  border: 1px solid rgba(0, 0, 0, 0.05);
  border-radius: var(--radius-md);
  background: var(--bibo-white);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.04),
    0 10px 22px -16px rgba(0, 0, 0, 0.16);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-about .about-timeline__content:hover {
  transform: translateY(-2px) rotate(-0.15deg);
  border-color: rgba(0, 122, 255, 0.32);
}

.page-about .about-timeline__content h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--bibo-gray-900);
}

.page-about .about-timeline__content p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--bibo-gray-700);
}

/* ===== 团队与组织 ===== */
.page-about .about-team {
  background: var(--bibo-gray-100);
}

.page-about .about-team__grid {
  display: grid;
  gap: 36px;
  align-items: center;
}

.page-about .about-team__content .coord-index {
  display: inline-block;
  margin-bottom: 6px;
}

.page-about .about-team__content .section-title {
  margin-top: 6px;
  margin-bottom: 16px;
}

.page-about .about-team__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--bibo-gray-700);
}

.page-about .about-team__list {
  display: grid;
  gap: 14px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-about .about-team__list li {
  position: relative;
  padding-left: 22px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--bibo-gray-700);
}

.page-about .about-team__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 3px;
  background: var(--bibo-blue);
  opacity: 0.85;
}

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

.page-about .about-team__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 22px 46px -22px rgba(0, 0, 0, 0.26);
}

.page-about .about-team__figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
  color: var(--bibo-gray-500);
}

/* ===== 资质与认证 ===== */
.page-about .about-cert {
  background: var(--bibo-gray-900);
  color: var(--bibo-white);
}

.page-about .about-cert .section-title {
  color: var(--bibo-white);
}

.page-about .about-cert .coord-index {
  border-color: rgba(0, 122, 255, 0.7);
  color: var(--bibo-blue);
}

.page-about .about-cert .section-label {
  color: var(--bibo-blue);
}

.page-about .about-cert__grid {
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-about .about-cert__figure {
  max-width: 260px;
  margin: 0 auto;
}

.page-about .about-cert__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: 50%;
  box-shadow:
    0 0 0 10px rgba(255, 255, 255, 0.05),
    0 26px 44px -20px rgba(0, 0, 0, 0.55);
}

.page-about .about-cert__figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.5;
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
}

.page-about .about-cert__items {
  display: grid;
  gap: 16px;
}

.page-about .about-cert__item {
  padding: 20px 22px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.035);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-about .about-cert__item:hover {
  transform: translateY(-2px);
  border-color: rgba(0, 122, 255, 0.55);
  background: rgba(0, 122, 255, 0.07);
}

.page-about .about-cert__item h3 {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bibo-white);
}

.page-about .about-cert__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: rgba(255, 255, 255, 0.72);
}

.page-about .about-cert__hint {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border: 1px solid rgba(0, 122, 255, 0.65);
  border-radius: 50%;
  color: var(--bibo-blue);
  background: rgba(0, 122, 255, 0.08);
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  cursor: help;
}

.page-about .about-cert__hint::after {
  content: attr(data-tip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  z-index: 3;
  width: max-content;
  max-width: 210px;
  padding: 8px 10px;
  border-radius: 8px;
  background: var(--bibo-white);
  color: var(--bibo-gray-900);
  font-size: 12px;
  font-weight: 400;
  line-height: 1.5;
  box-shadow: 0 10px 24px -12px rgba(0, 0, 0, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateX(-50%) translateY(0);
  transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s var(--ease);
  pointer-events: none;
}

.page-about .about-cert__hint:hover::after,
.page-about .about-cert__hint:focus::after,
.page-about .about-cert__hint:focus-within::after {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(-2px);
}

.page-about .about-cert__hint:focus {
  outline: 2px solid rgba(0, 122, 255, 0.6);
  outline-offset: 2px;
}

/* ===== 合作与荣誉 ===== */
.page-about .about-honor {
  background: var(--bibo-white);
}

.page-about .about-honor__intro {
  max-width: 640px;
  margin: 0 0 36px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--bibo-gray-700);
}

.page-about .about-honor__grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}

.page-about .about-honor__item {
  padding: 26px 24px;
  border: 1px solid rgba(0, 0, 0, 0.06);
  border-radius: var(--radius-md);
  background:
    linear-gradient(180deg, rgba(242, 242, 247, 0.7), rgba(255, 255, 255, 0)),
    var(--bibo-white);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-about .about-honor__item:hover {
  transform: translateY(-3px);
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 18px 30px -18px rgba(0, 0, 0, 0.2);
}

.page-about .about-honor__svg {
  display: block;
  width: 48px;
  height: 48px;
  margin-bottom: 16px;
}

.page-about .about-honor__num {
  display: block;
  margin-bottom: 10px;
  font-family: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--bibo-gray-900);
}

.page-about .about-honor__title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--bibo-gray-900);
}

.page-about .about-honor__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--bibo-gray-500);
}

/* ===== 延伸入口 ===== */
.page-about .about-reach {
  background: var(--bibo-gray-100);
  text-align: center;
}

.page-about .about-reach__title {
  margin: 0 0 10px;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--bibo-gray-900);
}

.page-about .about-reach__text {
  max-width: 480px;
  margin: 0 auto 28px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--bibo-gray-500);
}

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

/* ===== 响应式：平板与桌面 ===== */
@media (min-width: 640px) {
  .page-about .about-hero__stats {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (min-width: 900px) {
  .page-about .section {
    padding-top: 88px;
    padding-bottom: 88px;
  }

  .page-about .about-hero {
    padding-top: 56px;
    padding-bottom: 80px;
  }

  .page-about .about-hero__grid {
    grid-template-columns: 1.35fr 1fr;
    align-items: end;
    gap: 56px;
  }

  .page-about .about-hero__title {
    font-size: 44px;
  }

  .page-about .about-hero__lead {
    font-size: 17px;
  }

  .page-about .about-section-head {
    gap: 20px;
  }

  .page-about .about-section-head .section-title {
    font-size: 34px;
  }

  .page-about .about-timeline__item {
    grid-template-columns: 120px 44px 1fr;
    padding-bottom: 44px;
  }

  .page-about .about-timeline__list::before {
    left: 141px;
  }

  .page-about .about-timeline__year {
    font-size: 20px;
    padding-right: 20px;
  }

  .page-about .about-timeline__node {
    width: 14px;
    height: 14px;
    margin-top: 6px;
  }

  .page-about .about-timeline__content {
    max-width: 680px;
    padding: 20px 24px;
  }

  .page-about .about-team__grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

  .page-about .about-cert__grid {
    grid-template-columns: 300px 1fr;
    gap: 72px;
  }

  .page-about .about-cert__figure {
    max-width: 300px;
    margin: 0;
  }

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