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640px){.video-guide-platforms{grid-template-columns:repeat(2,1fr)}}.video-guide-tile{margin:0;padding:1.2rem;border-radius:12px;border:1px solid var(--color-border);background:linear-gradient(160deg,var(--color-bg-secondary),color-mix(in srgb,var(--color-bg) 40%,var(--color-bg-secondary)));transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}.video-guide-tile:hover{border-color:color-mix(in srgb,var(--color-primary) 28%,var(--color-border));box-shadow:0 12px 28px -20px #0f172a1f;transform:translateY(-1px)}[data-theme=dark] .video-guide-tile:hover{box-shadow:0 14px 32px -18px #00000073}.video-guide-tile h4{margin:0 0 .45rem;font-size:.9rem;font-weight:800;letter-spacing:-.015em;color:var(--color-text)}.video-guide-tile p{margin:0;font-size:.8125rem;line-height:1.55;color:var(--color-text-secondary)}.video-guide-tile code{font-size:.78em}.expandable-list{margin-top:1.5rem}.expandable-group-title{font-size:1.125rem;font-weight:600;margin-bottom:1rem;color:var(--color-text)}.expandable-items{display:flex;flex-direction:column;gap:.5rem}.expandable-item{background-color:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius);overflow:hidden;transition:all var(--transition)}.expandable-item:hover,.expandable-item.expanded{border-color:var(--color-primary)}.expandable-trigger{width:100%;display:flex;align-items:center;justify-content:space-between;padding:1rem 1.25rem;background:transparent;border:none;cursor:pointer;text-align:left;transition:all var(--transition)}.expandable-trigger:hover{background-color:var(--color-bg-tertiary)}.expandable-title-wrapper{display:flex;align-items:center;gap:.75rem}.expandable-item-icon{font-size:1.25rem;width:28px;text-align:center}.expandable-title{font-size:.95rem;font-weight:500;color:var(--color-text)}.expandable-toggle{font-size:1.25rem;font-weight:400;color:var(--color-text-secondary);width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all var(--transition);flex-shrink:0}.expandable-toggle:hover{background-color:var(--color-bg);color:var(--color-primary)}.expandable-toggle.open{color:var(--color-primary);background-color:var(--color-primary-light)}.expandable-panel{max-height:0;overflow:hidden;transition:max-height .3s ease}.expandable-panel.open{max-height:500px}.expandable-content-inner{padding:0 1.25rem 1.25rem}.expandable-content-inner p{font-size:.9rem;line-height:1.7;color:var(--color-text-secondary);margin-bottom:.75rem}.expandable-content-inner p:last-child{margin-bottom:0}.expandable-content-inner ul{list-style:disc;padding-left:1.5rem;margin:0}.expandable-content-inner li{font-size:.9rem;line-height:1.7;color:var(--color-text-secondary);margin-bottom:.5rem}.expandable-content-inner code{background-color:var(--color-bg);padding:.2rem .4rem;border-radius:4px;font-family:var(--font-mono);font-size:.85em;border:1px solid var(--color-border)}.expandable-info{border:none;background:transparent}.expandable-info .expandable-item{background-color:var(--color-primary-light);border-color:transparent}.expandable-info .expandable-item:hover,.expandable-info .expandable-item.expanded{border-color:var(--color-primary)}.expandable-header-info{background-color:transparent}.expandable-toggle-info{color:var(--color-primary)}.expandable-content-info{background-color:#ffffff80}[data-theme=dark] .expandable-content-info{background-color:#1e3a5f4d}.expandable-tips{border:none;background:transparent}.expandable-tips .expandable-item{background-color:var(--color-success-light);border-color:transparent}.expandable-tips .expandable-item:hover,.expandable-tips .expandable-item.expanded{border-color:var(--color-success)}.expandable-header-tips{background-color:transparent}.expandable-toggle-tips{color:var(--color-success)}.expandable-content-tips{background-color:#ffffff80}[data-theme=dark] .expandable-content-tips{background-color:#14532d4d}.expandable-faq{border:none;background:transparent}.expandable-faq .expandable-item{background-color:var(--color-bg);border:1px solid var(--color-border)}.expandable-faq .expandable-item:hover{border-color:var(--color-primary)}.expandable-faq .expandable-item.expanded{border-color:var(--color-primary);box-shadow:var(--shadow)}.expandable-header-faq{background-color:transparent}.expandable-toggle-faq{color:var(--color-text-secondary)}.expandable-content-faq{background-color:transparent}.expandable-item.simple{background-color:var(--color-bg);border:1px solid var(--color-border)}.expandable-item.simple:hover{border-color:var(--color-primary)}@media (max-width: 768px){.seo-content{padding:1.5rem}.content-page{padding:1rem}}