:root{--bg-start:#f8ffec;--bg-end:#dff7f3;--card-bg:#fff;--text:#222831;--link:#0b6e4f;--link-hover:#084c3b}*{box-sizing:border-box}html,body,#root{min-height:100%}body{min-height:100vh;color:var(--text);background:linear-gradient(135deg, var(--bg-start), var(--bg-end));place-items:center;margin:0;font-family:Trebuchet MS,Segoe UI,sans-serif;display:grid}.card{background:var(--card-bg);border-radius:14px;width:min(90%,640px);padding:2rem;line-height:1.6;box-shadow:0 12px 24px #00000014}h1{margin-top:0;font-size:2rem}a{color:var(--link);font-weight:700;text-decoration:none}a:hover,a:focus{color:var(--link-hover);text-decoration:underline}