/* ============================================
   About Page Styles
   ============================================ */

/* ---------- Brand Section ---------- */
.about-brand__row {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-brand__title {
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 20px;
}

.about-brand__divider {
  width: 50px;
  height: 3px;
  background-color: var(--color-primary);
  margin-bottom: 16px;
}

.about-brand__subtitle {
  font-size: var(--font-sm);
  color: var(--color-text-light);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 30px;
  font-weight: 400;
}

.about-brand__text {
  font-size: var(--font-base);
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 16px;
}

.about-brand__image {
  position: relative;
}

.about-brand__image img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.about-brand__image::before {
  content: "";
  position: absolute;
  top: 20px;
  right: 20px;
  left: -20px;
  bottom: -20px;
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-md);
  z-index: -1;
}

/* Stats */
.about-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 50px;
}

.about-stats__item {
  text-align: center;
  padding: 30px 20px;
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  transition: var(--transition-base);
}

.about-stats__item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.about-stats__number {
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
  line-height: 1;
}

.about-stats__label {
  font-size: var(--font-sm);
  color: var(--color-text-secondary);
}

/* ---------- History Section ---------- */
.history {
  background-color: var(--color-bg-light);
}

.history__thumbs-wrap {
  position: relative;
  margin-bottom: 40px;
}

.history__thumbs-viewport {
  overflow: hidden;
  margin: 0 50px;
}

.history__thumbs-track {
  display: flex;
  gap: 0;
  transition: transform 0.4s ease;
  justify-content: center;
}

.history__thumb-item {
  flex-shrink: 0;
  padding: 16px 30px;
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--color-text-light);
  cursor: pointer;
  transition: var(--transition-base);
  border-bottom: 2px solid transparent;
  white-space: nowrap;
}

.history__thumb-item:hover {
  color: var(--color-primary);
}

.history__thumb-item--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.history__thumbs-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color-bg-white);
  box-shadow: var(--shadow-card);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  transition: var(--transition-base);
  color: var(--color-text-secondary);
}

.history__thumbs-arrow:hover {
  background-color: var(--color-primary);
  color: var(--color-text-white);
}

.history__thumbs-arrow svg {
  width: 18px;
  height: 18px;
}

.history__thumbs-arrow--prev {
  left: 0;
}

.history__thumbs-arrow--next {
  right: 0;
}

.history__content {
  position: relative;
  min-height: 300px;
}

.history__content-slide {
  display: none;
  gap: 50px;
  align-items: center;
  grid-template-columns: 1fr 1fr;
}

.history__content-slide--active {
  display: grid;
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.history__content-img {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.history__content-img img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.history__content-text h3 {
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 20px;
}

.history__content-text p {
  font-size: var(--font-base);
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: 16px;
}

/* ---------- Honor Section ---------- */
.honor__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.honor__card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  padding: 20px;
  transition: var(--transition-base);
  text-align: center;
}

.honor__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.honor__card-img {
  width: 100%;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
  background-color: var(--color-bg-light);
}

.honor__card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.honor__card:hover .honor__card-img img {
  transform: scale(1.05);
}

.honor__card-title {
  font-size: var(--font-sm);
  color: var(--color-text-title);
  font-weight: 500;
}

/* ---------- Responsive ---------- */
@media (max-width: 1400px) {
  .about-brand__row {
    gap: 50px;
  }
  .about-stats {
    gap: 20px;
  }
  .honor__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 996px) {
  .about-brand__row {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-brand__image::before {
    display: none;
  }
  .about-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 36px;
  }
  .history__content-slide {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .honor__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 600px) {
  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .about-stats__item {
    padding: 20px 12px;
  }
  .honor__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .history__thumb-item {
    padding: 12px 20px;
    font-size: var(--font-base);
  }
  .history__thumbs-viewport {
    margin: 0 40px;
  }
}


/* ============================================
   Timeline Section （发展历程）
   ============================================ */
.timeline-section {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.timeline-info .section__title {
  display: inline-block;
}

.timeline-info .section__subtitle {
  margin-bottom: 24px;
  letter-spacing: 3px;
  font-size: 13px;
}

.timeline-info__text {
  color: var(--color-text-light);
  font-size: 15px;
  line-height: 1.9;
  margin-bottom: 16px;
}

.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 10px;
  bottom: 10px;
  width: 2px;
  background-color: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: 40px;
}

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

.timeline__dot {
  position: absolute;
  left: -40px;
  top: 4px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: var(--color-bg);
  border: 4px solid var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.timeline__dot::after {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.timeline__year {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.timeline__title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
}

.timeline__desc {
  color: var(--color-text-light);
  font-size: 14px;
  line-height: 1.8;
}

/* ============================================
   响应式适配（移动端）
   ============================================ */
@media (max-width: 768px) {
  .timeline-section {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  /* 其他通用响应式（如 .section__title 等）已在全局中定义，此处仅针对 timeline 自身 */
}

.timeline__dot {
  transition: all 0.4s ease;
  cursor: pointer;
}

.timeline__dot:hover {
  transform: rotate(180deg) scale(1.2);
  background-color: var(--color-primary);
  border-color: var(--color-primary-dark);
}

/* 内部小圆点也跟随变化 */
.timeline__dot::after {
  transition: background-color 0.3s ease;
}

.timeline__dot:hover::after {
  background-color: #fff;
}