:root{--bg-deep: #05243f;--bg-mid: #0f4c75;--sea-foam: #8fe3ff;--panel: #0b3558;--accent: #ffd166;--text: #f8fbff}*{box-sizing:border-box}body{margin:0;min-height:100vh;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;color:var(--text);background:radial-gradient(circle at 20% 20%,#1b6ca8 0%,transparent 35%),radial-gradient(circle at 80% 10%,#2a9d8f 0%,transparent 30%),linear-gradient(140deg,var(--bg-deep),var(--bg-mid))}