:root{color-scheme:light dark;--lav:#b9a8ef;--cream:#ffe393;--peach:#ffb0ab;--mint:#a1e0c2;--mist:#9cc9ef;--ink:#27243a}*{box-sizing:border-box}body{margin:0;font:17px/1.65 system-ui;color:var(--ink);background:linear-gradient(135deg,#f3edff,#edf7ff,#fff4e8);min-height:100vh}nav,main,footer{max-width:900px;margin:auto;padding:24px}nav{display:flex;justify-content:space-between;align-items:center}nav a{color:inherit;margin-left:18px}h1{font-size:clamp(42px,8vw,78px);line-height:1.05}.card{background:#ffffffbb;border:1px solid #fff;border-radius:28px;padding:28px;margin:22px 0;box-shadow:0 12px 40px #8877aa18}.cta{display:inline-block;padding:12px 20px;border-radius:999px;background:var(--lav);color:#171326;text-decoration:none;font-weight:700}small{opacity:.72}@media(prefers-color-scheme:dark){body{color:#f7f2ff;background:linear-gradient(135deg,#201b35,#152633,#2c2027)}.card{background:#ffffff10;border-color:#ffffff20}}