.section-composer{padding:var(--spacing-section-md) 0}.section-composer--dark{background:var(--color-surface)}.banner{position:relative;padding:64px 0 80px;background:var(--color-text);overflow:hidden}.banner__pattern{opacity:.05}.banner__overlay,.banner__pattern{position:absolute;inset:0;pointer-events:none}.banner__overlay{background:radial-gradient(ellipse at center,rgba(14,165,233,.08) 0,transparent 60%)}.banner__content{position:relative;z-index:1}.sticky-frame{position:sticky;z-index:var(--z-sticky);background:var(--color-bg)}.sticky-frame--top{top:var(--header-height);border-bottom:1px solid var(--color-border);padding:16px 0}.sticky-frame--bottom{bottom:0;border-top:1px solid var(--color-border);padding:12px 0;box-shadow:0 -4px 12px rgba(0,0,0,.08)}.sticky-frame--sidebar{top:calc(var(--header-height) + 16px);max-height:calc(100vh - var(--header-height) - 32px);overflow-y:auto}