/* ============================================================
   Social.Web — Download Page Styles
   ============================================================ */

.download-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
}
@media (max-width: 768px) { .download-grid { grid-template-columns: 1fr; } }

.download-card {
    background: var(--bg-elev-1);
    border: 1px solid var(--border-glass-strong);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    text-align: center;
    transition: all .25s var(--ease);
    position: relative;
    overflow: hidden;
}
.download-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 16px 50px rgba(255, 107, 107, .2);
}
.download-card::before {
    content: "";
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--gradient-hero);
    opacity: 0;
    transition: opacity .25s var(--ease);
}
.download-card:hover::before { opacity: 1; }

.download-os {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    text-align: left;
}
.download-os i {
    font-size: 3rem;
    color: var(--accent);
    transition: transform .3s var(--ease);
}
.download-card:hover .download-os i {
    transform: scale(1.1) rotate(-5deg);
}
.download-os h3 { font-size: 1.5rem; margin-bottom: 2px; }

.download-card .btn {
    width: 100%;
    margin: var(--space-4) 0;
    justify-content: center;
}

.download-meta {
    margin-top: var(--space-5);
    text-align: left;
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-glass);
}
.download-meta li {
    padding: 8px 0;
    color: var(--text-muted);
    font-size: .9rem;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.download-meta li i {
    color: var(--accent);
    width: 18px;
    text-align: center;
}

.download-fineprint {
    margin-top: var(--space-4);
    font-size: .82rem;
    color: var(--text-faint);
}
.download-fineprint i { color: #4ade80; margin-right: 6px; }

.other-downloads {
    margin-top: var(--space-8);
    text-align: center;
}

/* 安装步骤 */
.install-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
}
@media (max-width: 900px) { .install-steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 500px) { .install-steps { grid-template-columns: 1fr; } }

.install-step {
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all .25s var(--ease);
}
.install-step:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
}
.install-step .step-num {
    font-size: 2.4rem;
    font-weight: 900;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: var(--space-3);
}
.install-step h3 { font-size: 1rem; margin-bottom: var(--space-2); }
.install-step p { font-size: .88rem; }

/* 首次启动 onboarding */
.onboarding {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-10);
    align-items: center;
}
@media (max-width: 1024px) { .onboarding { grid-template-columns: 1fr; } }

.onboarding-list {
    margin: var(--space-4) 0;
    padding-left: 0;
    counter-reset: olist;
}
.onboarding-list li {
    counter-increment: olist;
    list-style: none;
    padding: var(--space-3) 0 var(--space-3) 56px;
    position: relative;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-glass);
}
.onboarding-list li::before {
    content: counter(olist, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: var(--space-3);
    font-weight: 800;
    color: var(--accent);
    font-size: 1.1rem;
    font-family: var(--font-mono);
}

.onboarding-visual {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

/* Verify 块 */
.verify-block {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
}
.verify-block > i {
    font-size: 2rem;
    color: var(--accent);
    flex-shrink: 0;
}
.verify-block h4 { margin-bottom: 4px; font-size: 1rem; }
.verify-block p { font-size: .88rem; color: var(--text-muted); }
.verify-block > div { flex: 1; }
@media (max-width: 600px) {
    .verify-block { flex-direction: column; text-align: center; }
}