:root{--color-primary:#1e1b4b;--color-primary-light:#312e81;--color-accent:#f59e0b;--color-accent-hover:#d97706;--color-neutral:#f1f5f9;--color-text:#1e293b;--color-text-secondary:#64748b;--color-bg:#fff;--color-surface:#f1f5f9;--color-success:#10b981;--color-danger:#ef4444;--color-border:#e2e8f0;--font-main:'Inter',sans-serif;--h1-size:clamp(2rem, 4vw, 3.5rem);--h2-size:clamp(1.5rem, 3vw, 2.25rem);--h3-size:clamp(1.25rem, 2.5vw, 1.75rem);--body-size:clamp(1rem, 1.5vw, 1.125rem);--caption-size:clamp(0.75rem, 1.2vw, 0.875rem);--content-max-width:840px;--section-gap:clamp(3rem, 6vw, 5rem);--component-padding:clamp(1.25rem, 3vw, 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li{padding-left:0;padding-bottom:.8rem}.clean-list li:before{display:none}.footer-4col-bottom{border-top:1px solid rgba(255,255,255,.05);padding-top:25px;text-align:center}.footer-4col-bottom p{margin:0;font-size:.85rem;color:#64748b;text-align:center}.back-to-top-btn{position:fixed;bottom:30px;right:30px;background-color:var(--color-accent,#fbbf24);color:#0b1120;width:45px;height:45px;border-radius:50%;border:none;font-size:1.2rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 15px rgba(0,0,0,.5);opacity:0;visibility:hidden;transform:translateY(20px);transition:all .3s ease;z-index:99}.back-to-top-btn.is-visible{opacity:1;visibility:visible;transform:translateY(0)}.back-to-top-btn:hover{background-color:#f59e0b;transform:translateY(-5px);color:#0b1120}