:root{color-scheme:dark;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{min-height:100vh;background:#0b0f1a;color:#e8eaf0}.app{max-width:72rem;margin:0 auto;padding:3rem 1.5rem 4rem}.header{text-align:center;margin-bottom:2.5rem}.header h1{font-size:2.25rem;font-weight:700;letter-spacing:-.03em;background:linear-gradient(135deg,#6ee7b7,#3b82f6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.subtitle{margin-top:.5rem;font-size:1rem;color:#ffffff80}.filters{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center;margin-bottom:2.5rem}.filter-btn{padding:.4rem 1rem;border-radius:999px;border:1px solid rgba(255,255,255,.12);background:transparent;color:#fff9;font-size:.85rem;cursor:pointer;transition:all .2s;font-family:inherit}.filter-btn:hover{border-color:#ffffff4d;color:#fff}.filter-btn.active{background:#3b82f626;border-color:#3b82f680;color:#93c5fd}.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(20rem,1fr));gap:1.25rem}.tip-card{position:relative;padding:1.75rem;border-radius:.875rem;border:1px solid rgba(255,255,255,.08);background:#ffffff08;transition:border-color .25s,transform .25s}.tip-card:hover{border-color:#3b82f659;transform:translateY(-2px)}.tip-category{display:inline-block;font-size:.65rem;font-weight:600;letter-spacing:.15em;text-transform:uppercase;color:#93c5fd;background:#3b82f61a;padding:.2rem .6rem;border-radius:.25rem;margin-bottom:.75rem}.tip-icon{font-size:1.75rem;margin-bottom:.75rem}.tip-card h2{font-size:1.1rem;font-weight:600;letter-spacing:-.01em;margin-bottom:.5rem;color:#f1f5f9}.tip-card p{font-size:.9rem;line-height:1.65;color:#ffffff8c}@media(max-width:540px){.app{padding:2rem 1rem 3rem}.header h1{font-size:1.75rem}.grid{grid-template-columns:1fr}}