/* 关于我们页面专属高级样式表 */

/* 1. 局部样式与排版变量 */
:root {
  --bento-gap: 24px;
}

/* 2. About Hero 区域 */
.about-hero {
  padding-block: 110px 80px;
  background: 
    radial-gradient(circle at 10% 20%, rgba(237, 121, 111, 0.08), transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(232, 79, 120, 0.06), transparent 45%),
    var(--color-bg-white);
  border-bottom: 1px solid var(--color-border);
  text-align: center;
}

.about-hero__inner {
  max-width: 1120px;
  margin-inline: auto;
}

.eyebrow-tag {
  display: inline-block;
  font-family: var(--font-main);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primary-end);
  background: rgba(232, 79, 120, 0.08);
  padding: 5px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}

.about-hero__title {
  font-size: clamp(58px, 6vw, 94px);
  font-weight: 800;
  line-height: 1.04;
  color: var(--color-text-dark);
  margin: 0 0 28px;
  letter-spacing: -0.058em;
  text-wrap: balance;
  perspective: 900px;
  transform-style: preserve-3d;
}

.about-hero__title .split-line {
  display: block;
  width: fit-content;
  overflow: hidden;
  padding-bottom: 0.08em;
  margin-inline: auto;
  margin-bottom: -0.08em;
}

.about-hero__title .split-char {
  display: inline-block;
  transform-style: preserve-3d;
  backface-visibility: hidden;
  will-change: transform, opacity;
}

.about-hero__title.is-gradient-title:not(.is-split-title),
.about-hero__title.is-split-title .split-char {
  color: transparent;
  background-image: linear-gradient(
    100deg,
    #ed796f 0%,
    #e84f78 38%,
    #ff7f9c 62%,
    #ed796f 100%
  );
  background-size: 220% 100%;
  background-position: 0% 50%;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.about-hero__title.is-split-title {
  color: var(--color-text-dark);
  background: none;
  -webkit-text-fill-color: initial;
}

.about-hero__title.is-split-title .split-line {
  color: inherit;
  background: none;
  -webkit-text-fill-color: inherit;
}

.about-hero__desc {
  font-size: clamp(18px, 1.2vw, 20px);
  line-height: 1.9;
  color: var(--color-text-gray);
  max-width: 880px;
  margin-inline: auto;
}

.mobile-title-break {
  display: inline;
}

/* 3. Double-Bezel (双重嵌框) 卡片设计规范 */
.double-bezel-card {
  position: relative;
  background: rgba(240, 241, 246, 0.4);
  border: 1px solid rgba(40, 41, 49, 0.06);
  border-radius: 24px;
  padding: 6px;
  box-shadow: 0 4px 20px rgba(40, 41, 49, 0.02);
  transition: transform 500ms cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 500ms cubic-bezier(0.16, 1, 0.3, 1),
              border-color 500ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.double-bezel-card__inner {
  background: var(--color-bg-white);
  border-radius: 18px; /* Concentric 圆角: 24px - 6px */
  padding: 32px;
  height: 100%;
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.9), 
              0 2px 10px rgba(40, 41, 49, 0.03);
  display: flex;
  flex-direction: column;
}

.double-bezel-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 36px rgba(40, 41, 49, 0.09);
  border-color: rgba(232, 79, 120, 0.16);
}

/* 4. Stats Section 样式 */
.about-stats {
  padding-block: 80px;
}

.about-stats__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.stats-label {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text-gray);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.stats-number {
  font-size: clamp(48px, 5.2vw, 76px);
  font-weight: 800;
  line-height: 1.1;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 16px;
  display: block;
}

.stats-desc {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-gray);
  margin: 0;
}

/* 5. Timeline (发展历程) 滚动时间轴样式 */
.about-timeline {
  position: relative;
  isolation: isolate;
  padding-block: 100px;
  overflow: hidden;
  background: #f7f0ea;
}

.about-timeline__media {
  position: absolute;
  z-index: 0;
  inset: -10% -3%;
  overflow: hidden;
  pointer-events: none;
}

.about-timeline__media img {
  width: 100%;
  height: 120%;
  display: block;
  object-fit: cover;
  object-position: center;
  opacity: 0.52;
  filter: saturate(0.78) contrast(0.88) brightness(1.06);
  transform: scale(1.06);
  will-change: transform;
}

.about-timeline::after {
  content: "";
  position: absolute;
  z-index: 0;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 251, 248, 0.92) 0%, rgba(255, 251, 248, 0.72) 18%, rgba(255, 251, 248, 0.64) 76%, rgba(255, 251, 248, 0.9) 100%),
    linear-gradient(90deg, rgba(255, 255, 255, 0.44), rgba(255, 249, 246, 0.2) 50%, rgba(255, 255, 255, 0.44));
  pointer-events: none;
}

.about-timeline > .container {
  position: relative;
  z-index: 1;
}

.timeline-container {
  position: relative;
  max-width: 1100px;
  margin: 64px auto 0;
  padding-inline: 24px;
}

/* 中间连线 */
.timeline-line-wrapper {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: rgba(40, 41, 49, 0.12);
  transform: translateX(-50%);
  overflow: hidden;
}

.timeline-line {
  width: 100%;
  height: 0; /* JS动画拉长 */
  background: var(--gradient-primary);
  transition: height 100ms linear;
}

.timeline-items {
  display: flex;
  flex-direction: column;
  gap: 80px;
}

.timeline-item {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

/* 时间点圆圈 */
.timeline-dot {
  position: absolute;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  border: 2px solid rgba(40, 41, 49, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: border-color 400ms ease, transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.dot-inner {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background 400ms ease, transform 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

.timeline-dot.is-active {
  border-color: var(--color-primary-end);
  transform: translate(-50%, -50%) scale(1.25);
}

.timeline-dot.is-active .dot-inner {
  background: var(--color-primary-end);
  transform: scale(1.2);
}

/* 时间轴内容卡片 */
.timeline-content {
  width: 45%;
  background: rgba(255, 255, 255, 0.86);
  border-radius: 20px;
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 50px rgba(92, 66, 52, 0.08);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0; /* JS动画淡入 */
  transform: translateY(30px);
  transition: transform 600ms cubic-bezier(0.16, 1, 0.3, 1), 
              opacity 600ms cubic-bezier(0.16, 1, 0.3, 1);
}

.timeline-content.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.timeline-item:nth-child(odd) .timeline-content {
  margin-right: auto;
  transform: translateX(-30px);
}

.timeline-item:nth-child(even) .timeline-content {
  margin-left: auto;
  transform: translateX(30px);
}

.timeline-item:nth-child(odd) .timeline-content.is-visible {
  transform: translateX(0);
}

.timeline-item:nth-child(even) .timeline-content.is-visible {
  transform: translateX(0);
}

.timeline-year {
  display: inline-block;
  font-size: clamp(30px, 3vw, 42px);
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 12px;
}

.timeline-content h3 {
  font-size: clamp(22px, 1.9vw, 28px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.025em;
  margin: 0 0 12px;
  color: var(--color-text-dark);
}

.timeline-content p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-gray);
  margin: 0;
}

/* 6. Bento Grid (企业文化网格) 样式 */
.about-bento {
  padding-block: 100px;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--bento-gap);
  margin-top: 56px;
}

.bento-cell--large {
  grid-column: span 8;
}

.bento-cell--small {
  grid-column: span 4;
}

.bento-cell__content {
  display: flex;
  flex-direction: row;
  gap: 32px;
  align-items: center;
  justify-content: space-between;
}

.bento-cell--small .bento-cell__content {
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-start;
}

.bento-cell__text {
  flex: 1 1 auto;
}

.bento-tag {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  color: var(--color-primary-end);
  background: rgba(232, 79, 120, 0.06);
  padding: 4px 10px;
  border-radius: 6px;
  margin-bottom: 16px;
}

.bento-cell h3 {
  font-size: clamp(26px, 2.5vw, 38px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.035em;
  margin: 0 0 16px;
  color: var(--color-text-dark);
}

.bento-cell p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--color-text-gray);
  margin: 0;
}

/* Bento 单元格视觉元素 */
.bento-cell__visual {
  flex: 0 0 240px;
  height: 180px;
  background: var(--color-bg-light);
  border-radius: 14px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 款色码矩阵视觉 */
.bento-cell__visual--shirt {
  background: linear-gradient(135deg, #fff5f5, #fff0f2);
  padding: 16px;
  border: 1px solid rgba(232, 79, 120, 0.08);
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  width: 100%;
}

.matrix-item {
  font-size: 11px;
  font-family: monospace;
  background: var(--color-bg-white);
  padding: 6px 10px;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  color: var(--color-text-dark);
  text-align: center;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(40, 41, 49, 0.03);
}

.matrix-item--head {
  grid-column: span 2;
  background: var(--gradient-primary);
  color: #fff;
  border: 0;
}

.matrix-item:not(.matrix-item--head) {
  transition:
    color 340ms ease,
    background-color 340ms ease,
    border-color 340ms ease,
    transform 340ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 340ms ease;
}

.matrix-item.is-live {
  color: var(--color-primary-end);
  background: #fff9fb;
  border-color: rgba(232, 79, 120, 0.28);
  box-shadow: 0 8px 18px rgba(232, 79, 120, 0.11);
  transform: translateY(-2px);
}

/* 柱状图表视觉 */
.bento-cell__visual--chart {
  background: linear-gradient(135deg, #f0f7ff, #e6f4ff);
  display: flex;
  align-items: flex-end;
  padding: 24px;
}

.bento-chart-bars {
  display: flex;
  align-items: flex-end;
  gap: 16px;
  width: 100%;
  height: 100%;
}

.bento-chart-bar {
  flex: 1;
  height: var(--h);
  background: var(--gradient-primary);
  border-radius: 6px 6px 0 0;
  position: relative;
  transform-origin: bottom;
  transform: scaleY(0);
  will-change: transform;
}

/* 7. Partners (合作伙伴) 样式 */
.about-partners {
  padding-block: 80px 60px;
  border-bottom: 1px solid var(--color-border);
}

.about-partners__inner {
  max-width: 100%;
  margin-inline: auto;
  text-align: center;
}

.about-partners h3 {
  font-size: clamp(32px, 3.2vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.04em;
  margin: 0 0 12px;
}

.about-partners p {
  color: var(--color-text-gray);
  font-size: 17px;
  line-height: 1.8;
  margin: 0 0 42px;
}

.ecosystem-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  text-align: left;
}

.ecosystem-card {
  display: block;
  min-width: 0;
  color: var(--color-text-dark);
  border: 1px solid rgba(40, 41, 49, 0.08);
  border-radius: 18px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 12px 34px rgba(40, 41, 49, 0.06);
  transition:
    transform 420ms cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 420ms ease,
    border-color 420ms ease;
}

.ecosystem-card:hover {
  transform: translateY(-8px);
  border-color: rgba(232, 79, 120, 0.2);
  box-shadow: 0 24px 54px rgba(75, 52, 58, 0.13);
}

.ecosystem-card__media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: #f3eee8;
}

.ecosystem-card__media img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transform: scale(1.02);
  filter: saturate(0.88);
  transition:
    transform 760ms cubic-bezier(0.16, 1, 0.3, 1),
    filter 420ms ease;
}

.ecosystem-card:hover .ecosystem-card__media img {
  transform: scale(1.075);
  filter: saturate(1);
}

.ecosystem-card__body {
  position: relative;
  min-height: 148px;
  padding: 22px 22px 20px;
}

.ecosystem-card__body > span {
  display: block;
  margin-bottom: 16px;
  color: var(--color-primary-end);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.ecosystem-card h4 {
  margin: 0 0 7px;
  font-size: 22px;
  line-height: 1.2;
}

.ecosystem-card p {
  margin: 0;
  padding-right: 34px;
  color: var(--color-text-gray);
  font-size: 14px;
  line-height: 1.5;
}

.ecosystem-card b {
  position: absolute;
  right: 20px;
  bottom: 20px;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  color: var(--color-primary-end);
  background: #fff2f5;
  font-size: 15px;
  font-weight: 500;
  transition: transform 240ms ease;
}

.ecosystem-card:hover b {
  transform: translate(3px, -3px);
}

/* 8. Bottom CTA 样式 */
.about-cta {
  padding-block: 100px;
  text-align: center;
  position: relative;
  background: 
    radial-gradient(circle at 50% 50%, rgba(232, 79, 120, 0.04), transparent 50%),
    var(--color-bg-light);
}

.about-cta__inner {
  max-width: 900px;
  margin-inline: auto;
}

.about-cta h2 {
  font-size: clamp(42px, 4.5vw, 68px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.052em;
  text-wrap: balance;
  margin: 0 0 18px;
}

.about-cta p {
  font-size: 18px;
  line-height: 1.85;
  color: var(--color-text-gray);
  margin: 0 0 36px;
}

.about-cta__actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
}

/* 9. 响应式布局自适应 (Responsive Breakpoints) */
@media (max-width: 991px) {
  .ecosystem-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .bento-cell--large,
  .bento-cell--small {
    grid-column: span 12;
  }
  
  .bento-cell__content {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .bento-cell__visual {
    width: 100%;
    height: 160px;
    margin-top: 16px;
  }
}

@media (max-width: 768px) {
  .about-stats__grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .about-hero {
    padding-block: 80px 48px;
  }

  .about-hero__title {
    font-size: clamp(40px, 10.7vw, 48px);
    line-height: 1.07;
    letter-spacing: -0.052em;
  }

  .mobile-title-break {
    display: block;
  }

  .about-hero__desc {
    font-size: 16px;
    line-height: 1.85;
  }

  .about-timeline__media {
    inset: -5% -24%;
  }

  .about-timeline__media img {
    opacity: 0.4;
  }

  .about-timeline::after {
    background: rgba(255, 251, 248, 0.76);
  }

  .stats-number {
    font-size: 48px;
  }

  /* 时间轴折叠为单边靠右 */
  .timeline-line-wrapper {
    left: 20px;
    transform: none;
  }

  .timeline-dot {
    left: 20px;
    transform: translateY(-50%);
  }
  
  .timeline-dot.is-active {
    transform: translateY(-50%) scale(1.25);
  }

  .timeline-content {
    width: calc(100% - 48px);
    margin-left: 48px !important;
    margin-right: 0 !important;
    transform: translateY(20px) !important;
  }

  .timeline-content h3 {
    font-size: 22px;
  }

  .timeline-content p,
  .bento-cell p {
    font-size: 16px;
  }

  .timeline-items {
    gap: 48px;
  }

  .about-cta {
    padding-block: 64px;
  }

  .bento-cell h3 {
    font-size: clamp(26px, 8vw, 32px);
  }

  .about-partners h3 {
    font-size: 32px;
  }

  .ecosystem-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .ecosystem-card {
    display: grid;
    grid-template-columns: 42% minmax(0, 1fr);
  }

  .ecosystem-card__media {
    aspect-ratio: auto;
    min-height: 174px;
  }

  .ecosystem-card__body {
    min-height: 174px;
    padding: 20px 18px;
  }

  .ecosystem-card__body > span {
    margin-bottom: 24px;
  }

  .about-cta h2 {
    font-size: clamp(36px, 10.5vw, 48px);
  }

  .about-cta p {
    font-size: 16px;
  }

  .about-cta__actions .btn {
    width: 100%;
  }
}

/* 动画触发基类，与GSAP解耦，作为无JS/Reduced Motion降级 */
.animate-reveal {
  opacity: 1;
  transform: none;
}