:root{--bg:#fff;--text:#111;--aurora:rgba(255,252,0,0.4);--accent:#fffc00;--accent-hover:#e6e300;--btn-text:#000;--circ-bg:#111;--circ-text:#fff}[data-theme="dark"]{--bg:#090909;--text:#fafafa;--aurora:rgba(200,195,0,0.12);--circ-bg:#222;--circ-text:#fffc00}body,html{margin:0;padding:0;width:100%;height:100%;overflow:hidden;font-family:'Inter',sans-serif;background-color:var(--bg);color:var(--text);transition:background-color .3s ease,color .3s ease;box-sizing:border-box}*,*:before,*:after{box-sizing:inherit}.mesh{position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 50% 50%,var(--aurora) 0,transparent 35%);z-index:-1;animation:aurora 20s ease-in-out infinite alternate;opacity:.8;pointer-events:none}@keyframes aurora{0%{transform:translate(0,0) scale(1)}100%{transform:translate(8%,8%) scale(1.15)}}.layout{display:flex;flex-direction:column;height:100vh;width:100vw;position:relative;z-index:1}header{display:flex;justify-content:space-between;align-items:center;padding:1.5rem 2rem}header img{height:36px;width:auto;display:block}.circ-btn{width:48px;height:48px;border-radius:50%;border:none;background:var(--circ-bg);color:var(--circ-text);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 4px 12px rgba(0,0,0,.15);padding:0}.circ-btn:hover{transform:scale(1.1);background:var(--text);color:var(--bg)}.circ-btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}main{flex:1;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;padding:0 1.5rem;max-width:860px;margin:0 auto}h1{font-size:clamp(2.5rem,7vw,5rem);font-weight:700;margin:0 0 1.25rem;line-height:1.05;letter-spacing:-.04em}p{font-size:clamp(1rem,2.2vw,1.25rem);font-weight:400;margin:0 0 3rem;line-height:1.6;opacity:.85;max-width:650px}.cta{display:inline-flex;align-items:center;justify-content:center;padding:1.125rem 3rem;background:var(--accent);color:var(--btn-text);text-decoration:none;font-weight:700;font-size:1.125rem;border-radius:50px;transition:all .2s cubic-bezier(.175,.885,.32,1.275);box-shadow:0 8px 24px rgba(255,252,0,.25)}.cta:hover{transform:translateY(-3px) scale(1.04);background:var(--accent-hover);box-shadow:0 12px 32px rgba(255,252,0,.4)}.cta:focus-visible{outline:3px solid var(--text);outline-offset:2px}footer{padding:1.5rem;text-align:center;font-size:.875rem;opacity:.5}footer span,footer a{color:var(--text);text-decoration:none;margin:0 .5rem}footer a:hover{text-decoration:underline}@media(max-width:480px){header{padding:1.25rem 1rem}main{padding:0 1rem}.circ-btn{width:42px;height:42px}.cta{padding:1rem 2.5rem;font-size:1.05rem}footer{padding:1rem}}