.download-hero {
    background: var(--featured-bg);
    position: relative; overflow: hidden;
}
.download-hero::before {
    content: ''; position: absolute; inset: 0;
    background:
        radial-gradient(600px 300px at 85% -10%, rgba(255,255,255,0.18), transparent 60%),
        radial-gradient(500px 260px at 10% 110%, rgba(167,139,250,0.35), transparent 60%);
}
.download-hero::after {
    content: ''; position: absolute;
    width: 340px; height: 340px; border-radius: 50%;
    border: 1px solid rgba(255,255,255,0.12);
    top: -80px; right: -80px;
}
.hero-app-icon {
    width: 84px; height: 84px; border-radius: 22px;
    background: rgba(255,255,255,0.16); backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.25);
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 10px 30px -8px rgba(0,0,0,0.4);
}
/* 下载按钮：呼吸脉冲，强烈 CTA */
@keyframes pulseBtn {
    0%, 100% { box-shadow: 0 8px 28px -6px rgba(0,0,0,0.35); }
    50% { box-shadow: 0 8px 34px -4px rgba(0,0,0,0.45), 0 0 0 14px rgba(255,255,255,0.10); }
}
@keyframes bounceArrow { 0%,100%{transform:translateY(0)} 50%{transform:translateY(3px)} }
.download-btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.6rem;
    background: #ffffff; color: var(--primary); font-weight: 800; font-size: 1.2rem;
    padding: 1.15rem 3rem; min-height: 60px; min-width: 240px;
    border-radius: 9999px;
    animation: pulseBtn 2.2s infinite;
    transition: transform 0.2s, background 0.2s;
    -webkit-tap-highlight-color: transparent;
}
.download-btn:active { transform: scale(0.97); }
.download-btn:hover { transform: translateY(-2px) scale(1.03); background: var(--primary-lighter); }
.download-btn .arr { animation: bounceArrow 1.4s infinite; }
.download-meta {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: .45rem 1rem;
}
.download-meta-item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .25rem;
    min-width: 0;
    white-space: nowrap;
}
.feat-card {
    border: 1px solid var(--border); border-radius: 0.9rem;
    background: var(--bg-card); padding: 1.1rem 1.2rem;
    transition: transform 0.2s, box-shadow 0.2s;
}
.feat-card:hover { transform: translateY(-3px); box-shadow: 0 10px 25px -10px rgba(99,102,241,0.25); }
.feat-icon {
    width: 42px; height: 42px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    background: var(--primary-light); color: var(--primary);
}
.app-download-page {
    width: min(768px, calc(100% - 32px));
    margin: 0 auto;
    padding: 2rem 0 5rem;
}
@media (max-width: 767px) {
    /* 下载页是独立落地页，避免全局固定 Tab 覆盖功能卡片和下载说明。 */
    body:has(.app-download-page) #mobile-tabbar {
        display: none;
    }
    body:has(.app-download-page) footer {
        padding-bottom: calc(5rem + env(safe-area-inset-bottom));
    }
    .app-download-page {
        width: calc(100% - 32px);
        padding: 1rem 0 6.5rem;
    }
    .download-hero {
        padding: 1.5rem 1rem !important;
        border-radius: 1.25rem;
    }
    .hero-app-icon {
        width: 72px;
        height: 72px;
        border-radius: 18px;
        margin-bottom: 1rem;
    }
    .download-btn {
        width: min(100%, 240px);
        min-width: 0;
        min-height: 56px;
        padding: .95rem 1rem;
        font-size: 1.05rem;
    }
    .download-meta {
        font-size: 11px;
        gap: .45rem .75rem;
    }
    .feat-card {
        padding: 1rem;
    }
    .feat-icon {
        width: 38px;
        height: 38px;
        border-radius: 10px;
    }
}
@media (max-width: 359px) {
    .download-meta {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: .5rem .35rem;
        width: 100%;
    }
    .download-meta-item {
        white-space: normal;
        text-align: center;
        line-height: 1.35;
    }
}