.channels-section{padding:50px 0 90px}.channels-packages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px;margin-top:32px}.channel-pkg-card{background:var(--bg-card);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--border-light);border-radius:var(--radius-xl);padding:32px 28px;transition:var(--transition);display:flex;flex-direction:column}.channel-pkg-card:hover{border-color:var(--border-hover);transform:translateY(-4px);box-shadow:0 16px 40px rgba(0,0,0,.4),0 0 30px var(--primary-subtle-glow)}.channel-pkg-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.channel-pkg-title{font-size:1.35rem;font-weight:800;color:var(--text-main);margin:0;display:flex;align-items:center;gap:8px}.channel-pkg-count{font-size:.8rem;font-weight:800;padding:4px 12px;border-radius:var(--radius-pill);background:rgba(20,184,166,.12);color:var(--primary);border:1px solid rgba(20,184,166,.28)}.channel-pkg-desc{font-size:.92rem;color:var(--text-muted);line-height:1.65;margin-bottom:20px}.channel-chips-cloud{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;flex-grow:1}.channel-chip{display:inline-flex;align-items:center;font-size:.78rem;font-weight:600;padding:5px 11px;border-radius:var(--radius-sm);background:rgba(255,255,255,.04);color:var(--text-main);border:1px solid rgba(255,255,255,.08);transition:var(--transition)}[data-theme=light] .channel-chip{background:#f1f5f9;border-color:#e2e8f0;color:#1e293b}.channel-chip:hover{background:rgba(20,184,166,.15);border-color:var(--primary);color:#fff}.channel-pkg-footer{display:flex;justify-content:space-between;align-items:center;padding-top:18px;border-top:1px solid var(--border-light);font-size:.82rem;color:var(--text-dim)}.channel-badge-4k{display:inline-flex;align-items:center;gap:4px;font-weight:700;color:#10b981}.faq-category-pills{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-bottom:34px}.channels-filter-btn,.faq-pill-btn{padding:9px 18px;border-radius:var(--radius-pill);font-size:.86rem;font-weight:700;border:1px solid var(--border-light);background:rgba(255,255,255,.03);color:var(--text-muted);cursor:pointer;transition:var(--transition)}[data-theme=light] .channels-filter-btn,[data-theme=light] .faq-pill-btn{background:#f8fafc;border-color:#cbd5e1;color:#475569}.channels-filter-btn:hover,.faq-pill-btn:hover{border-color:var(--primary);color:var(--text-main)}.channels-filter-btn.active,.faq-pill-btn.active{background:var(--primary);color:#000;border-color:var(--primary);box-shadow:0 0 16px var(--primary-glow)}.faq-engineer-card{max-width:820px;margin:44px auto 0;padding:38px 30px;border-radius:var(--radius-2xl);background:var(--bg-card);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);border:1px solid var(--border-light);text-align:center;box-shadow:0 16px 40px rgba(0,0,0,.25)}.faq-engineer-card h3{font-size:1.35rem;font-weight:800;color:var(--text-main);margin-bottom:8px}.faq-engineer-card p{color:var(--text-muted);font-size:.92rem;margin:0}.faq-engineer-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:22px}.guide-header{margin-bottom:38px}.guide-header .page-title{margin-top:14px;margin-bottom:10px}