body::before {
        content: "";
        position: absolute;
        top: 200px;
        /* 控制整体下移 50px */
        left: 0;
        right: 0;
        bottom: 0;
        background-image: none!important;
        background-size: cover;
        background-position: center;
        z-index: -1;
    }
/* ── APK SECTION ── */
.apk-section {
  padding: 80px 32px;
  position: relative;
  background: var(--bg);
}

.apk-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    var(--primary) 40%,
    var(--primary2) 60%,
    transparent 100%
  );
  opacity: 0.40;
}

.apk-card {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  align-items: start;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 48px 40px;
  position: relative;
  overflow: hidden;
}

/* subtle corner glow */
.apk-card::after {
  content: '';
  position: absolute;
  top: -40px; right: -40px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0,200,83,0.10) 0%, transparent 70%);
  pointer-events: none;
}

.apk-icon {
  width: 100px;
  height: 100px;
  border-radius: 20px;
  background: rgba(0, 200, 83, 0.08);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.apk-icon svg {
  width: 52px;
  height: 52px;
}

.apk-content { display: flex; flex-direction: column; }

.apk-desc {
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.80;
  margin-bottom: 24px;
  max-width: 520px;
}

.apk-features {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px 32px;
  margin-bottom: 28px;
}

.apk-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
}

.apk-features li svg {
  width: 15px;
  height: 15px;
  color: var(--primary);
  flex-shrink: 0;
}

/* ── INSTALL SECTION ─────────────────────────────── */

.install-section {
  padding: 60px 32px 80px;
  background: var(--card-bg);
  position: relative;
}

.install-section::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%, var(--primary) 40%, var(--primary2) 60%, transparent 100%);
  opacity: 0.35;
}

.install-steps {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.install-step {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  position: relative;
  padding-bottom: 32px;
}

.install-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 21px;
  top: 44px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--primary2) 0%, rgba(0,200,83,0.08) 100%);
}

.step-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: 20px;
  font-weight: 400;
  color: var(--primary);
  letter-spacing: 1px;
  line-height: 1;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid var(--primary2);
  background: rgba(0, 200, 83, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 14px rgba(0, 200, 83, 0.20);
  position: relative;
  z-index: 1;
}

.step-body { padding-top: 8px; }

.step-body h3 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 6px;
  letter-spacing: 0.3px;
}

.step-body p {
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.75;
}

.step-body strong { color: var(--text); font-weight: 600; }

@media (max-width: 800px) { 
  /* APK section stacks on mobile */
  .apk-card {
    grid-template-columns: 1fr;
    padding: 32px 24px 15px;
    gap: 24px;
  }
  .apk-desc{
    margin-bottom: 5px;
  }
  .apk-features{
    margin-bottom: 10px;
    gap: 0;
  }
  .apk-section{
    padding: 20px 24px 30px;
  }
  .apk-section .section-title{
    font-size: 16px;
    margin-bottom: 0;
  }
  .apk-section .title-bar{
    margin: 10px 0!important;
  }
  .banner3{
    position: absolute;
    width: auto;
    height: 40%;
    right: 6px;
    bottom: 0;
    top: 43%;
    transform: translate(0%, 0);
  }
  .apk-card::after{
    display: none;
  }
  .apk-card .btn-primary{
    width: 100%;
    letter-spacing: 0;
    padding:  10px;

  }
  .apk-card .appicons{
    display: none;
  }
  .apk-card .appicons2{
    display: block;
    width: 60%;
    margin-bottom: 60px;
  }
  .apk-icon { width: 72px; height: 72px;display: block; margin-bottom: 20px;}
  .apk-icon svg { width: 38px; height: 38px; }

  .apk-features { grid-template-columns: 1fr; }
  .install-section{
    padding: 20px 24px 20px;
  }
}