.tagline{font-size:1.2rem;opacity:.9;max-width:800px;margin:0 auto}.dark-mode-toggle{position:fixed;top:20px;right:20px;background:#6c63ff;color:white;border:none;border-radius:50%;width:50px;height:50px;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:0 3px 10px rgba(0,0,0,.2);z-index:100}body.dark-mode{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 100%);color:#f0f0f0}body.dark-mode .section,body.dark-mode .intro,body.dark-mode .feature-card,body.dark-mode .step{background:#2d2d44;color:#f0f0f0}body.dark-mode .feature-card{background:#363652}body.dark-mode h2{color:#8a85ff}body.dark-mode .tool-link{background:#8a85ff}body.dark-mode .tool-link:hover{background:#6c63ff}