/* =======================================================================
   M77 品牌手册页（catalogues.html）
   ======================================================================= */

/* ---- 区块标题 ---- */
.cat-section {
  padding-block: clamp(48px, 6vw, 80px);
}
.cat-head {
  text-align: center;
  margin-bottom: clamp(40px, 5vw, 64px);
}
.cat-head__title {
  font-size: clamp(18px, 2vw, 26px);
  font-weight: 700;
  letter-spacing: 4px;
  color: #111;
  margin: 0 0 14px;
}
.cat-head__rule {
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-gold, #c9a96e);
  margin: 0 auto;
}

/* ---- 手册走马灯 ---- */
.cat-slider {
  position: relative;
  overflow: hidden;
  padding-block: clamp(16px, 2vw, 24px);    max-width: 80%;
    margin: auto;
}
.cat-slider__track {
  display: flex;
  gap: clamp(24px, 4vw, 60px);
  transition: transform .55s cubic-bezier(.22,.61,.36,1);
  will-change: transform;
  padding-inline: clamp(40px, 8vw, 120px);
}

/* ---- 每张手册 ---- */
.cat-slide {
  flex: 0 0 calc(50% - clamp(12px, 2vw, 30px));
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: clamp(14px, 1.5vw, 20px);
}

/* 封面图容器：白底阴影 */
.cat-cover {
  display: block;
  width: 100%;
  max-width: 380px;
  background: #fff;
  box-shadow: 0 8px 40px rgba(0,0,0,.14), 0 2px 8px rgba(0,0,0,.06);
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
}
.cat-cover img {
  width: 100%;
  object-fit: cover;
  display: block;
  background: #e8e8e8;
  transition: transform .65s cubic-bezier(.22,.61,.36,1);
}
.cat-cover:hover img {
  transform: scale(1.05);
}

/* 书名 */
.cat-title {
  font-size: clamp(13px, 1.1vw, 16px);
  font-weight: 500;
  letter-spacing: 3px;
  color: #111;
  text-align: center;
  margin: 0;padding-top: 15px;
}

/* 下载按钮：边框胶囊，悬停反色 */
.cat-dl {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 11px 52px;
  border-radius: 999px;
  border: 1.5px solid #111;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 3px;
  color: #111;
  text-decoration: none;
  cursor: pointer;
  transition: background .25s, color .25s, border-color .25s;margin-top: 40px;
}
.cat-dl:hover {
  background: #111;
  color: #fff;
  border-color: #111;
}

/* ---- 箭头（贴边，全出血） ---- */
.cat-slider .slider-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
}
.cat-slider .slider-arrow--prev { left: clamp(8px, 1.5vw, 24px); }
.cat-slider .slider-arrow--next { right: clamp(8px, 1.5vw, 24px); }

/* ---- 响应式 ---- */
@media (max-width: 700px) {
  .cat-slide { flex: 0 0 80%; }
  .cat-slider__track { padding-inline: clamp(32px, 6vw, 60px); }
  .cat-slider__track {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
  }

}