心无杂念 - 知行合一 :root { --primary-color: #d81e06; --bg-color: #1a1a1a; --card-width: min(85vw, 360px); --card-height: min(136vw, 576px); --text-color: #333; --gold: #faddad; } body { background-color: #111; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 300 300'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noiseFilter)' fill='white' opacity='0.15'/%3E%3C/svg%3E"), radial-gradient(circle at 50% 50%, #2a2a2a 0%, #111 100%); background-repeat: repeat, no-repeat; background-position: 0 0, center center; background-size: 300px 300px, cover; display: flex; flex-direction: column; justify-content: center; align-items: center; height: 100vh; margin: 0; font-family: "