*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #0d0d1a;--bg2: #1a1a2e;--bg3: #16213e;--accent: #4fc3f7;--accent2: #0ea5e9;--text: #e2e8f0;--text2: #94a3b8;--border: #2d3748;--danger: #ef4444;--success: #22c55e}body{background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,sans-serif;min-height:100vh}button{cursor:pointer;border:none;border-radius:8px;font-weight:600;transition:opacity .15s}button:hover{opacity:.85}button:disabled{opacity:.4;cursor:not-allowed}input{background:var(--bg);border:1px solid var(--border);border-radius:8px;color:var(--text);padding:10px 14px;font-size:14px;width:100%;outline:none;transition:border-color .15s}input:focus{border-color:var(--accent)}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{0%,to{opacity:.3}50%{opacity:1}}html{scroll-behavior:smooth}.feature-card:hover{border-color:var(--accent);transform:translateY(-4px)}.dl-btn:hover{border-color:var(--accent);background:var(--bg2);transform:translateY(-2px)}.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 40px #4fc3f766}.btn-secondary:hover{background:var(--bg3)}.btn-ghost:hover{border-color:var(--accent);color:var(--text)}.nav-link:hover{color:var(--text);background:var(--bg3)}.nav-btn-ghost:hover{border-color:var(--accent);color:var(--accent)}.nav-btn-primary:hover{opacity:.85}.tab:hover{color:var(--text)}@media (max-width: 900px){.nav-links{display:none!important}}@media (max-width: 640px){.hero{padding:100px 20px 60px!important}.section{padding:60px 20px!important}.download-card{padding:36px 24px!important}.two-col{gap:32px!important}}