/* 案例展示 · App 扫码下载页（复刻 sm.sutui-cn 首页英雄区） */
.cases-dl-page {
  margin: 0;
}

.cases-dl-hero {
  position: relative;
  min-height: calc(100vh - 64px);
  min-height: calc(100dvh - 64px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0b1220;
}

.cases-dl-hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.cases-dl-hero__mask {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: rgba(11, 18, 32, 0.52);
}

.cases-dl-hero__inner {
  position: relative;
  z-index: 2;
  width: min(960px, 92vw);
  margin: 0 auto;
  padding: 48px 16px 72px;
  text-align: center;
}

.cases-dl-brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin: 0 0 22px;
}
.cases-dl-brand__logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
  padding: 8px;
}
.cases-dl-brand__name {
  margin: 0;
  color: #fff;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 750;
  letter-spacing: 0.06em;
  text-shadow: 0 4px 18px rgba(0, 0, 0, 0.35);
}

.cases-dl-hero__slogan {
  display: block;
  max-width: 520px;
  width: 100%;
  height: auto;
  margin: 0 auto 24px;
}

.cases-dl-hero__tagline {
  color: #fff;
  font-size: clamp(1.35rem, 2.8vw, 2.35rem);
  font-weight: 300;
  letter-spacing: 0.18em;
  margin: 0 0 36px;
  line-height: 1.45;
}

.cases-dl-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 36px;
}

.cases-dl-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 156px;
  padding: 14px 18px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  color: #fff;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-sizing: border-box;
}

.cases-dl-btn:hover,
.cases-dl-btn:focus-visible {
  background: rgba(255, 255, 255, 0.3);
  outline: none;
}

.cases-dl-btn__icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  display: block;
}

.cases-dl-btn__meta {
  text-align: left;
  line-height: 1.25;
}

.cases-dl-btn__plat {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
}

.cases-dl-btn__action {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
}

.cases-dl-qr {
  display: none;
  position: absolute;
  left: 50%;
  top: calc(100% + 12px);
  transform: translateX(-50%);
  z-index: 5;
  padding: 8px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.28);
}

.cases-dl-qr img {
  display: block;
  width: 160px;
  height: 160px;
  object-fit: contain;
}

.cases-dl-btn:hover .cases-dl-qr,
.cases-dl-btn:focus-within .cases-dl-qr,
.cases-dl-btn.is-open .cases-dl-qr {
  display: block;
}

.cases-dl-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border: 2px solid #fff;
  border-radius: 999px;
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  transition: background 0.2s ease, color 0.2s ease;
}

.cases-dl-more:hover {
  background: #fff;
  color: #1a56db;
}

.cases-dl-scroll {
  position: absolute;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 2;
  color: rgba(255, 255, 255, 0.72);
  animation: cases-dl-bounce 1.6s infinite;
}

.cases-dl-scroll svg {
  width: 28px;
  height: 28px;
  display: block;
}

@keyframes cases-dl-bounce {
  0%, 100% { transform: translate(-50%, 0); opacity: 0.7; }
  50% { transform: translate(-50%, 8px); opacity: 1; }
}

@media (max-width: 640px) {
  .cases-dl-brand__logo {
    width: 72px;
    height: 72px;
    border-radius: 16px;
  }
  .cases-dl-brand {
    margin-bottom: 16px;
  }
  .cases-dl-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .cases-dl-btn {
    justify-content: center;
  }
  .cases-dl-qr {
    left: 50%;
  }
  .cases-dl-hero__tagline {
    letter-spacing: 0.08em;
  }
}