:root{--bg: #f5f5f7;--surface: #ffffff;--surface-2: #fbfbfd;--text: #1d1d1f;--muted: rgba(29,29,31,.72);--muted-2: rgba(29,29,31,.55);--primary: #0071e3;--primary-2: #005bb5;--border: rgba(0,0,0,.1);--border-2: rgba(0,0,0,.06);--shadow-sm: 0 6px 18px rgba(0,0,0,.06);--shadow-md: 0 14px 40px rgba(0,0,0,.1);--radius-sm: 14px;--radius-md: 18px;--radius-lg: 24px;--font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial, sans-serif}*{box-sizing:border-box}html,body{height:100%}body{margin:0;font-family:var(--font);color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}.container{width:min(1120px,92%);margin:0 auto}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:12px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);background:#ffffffd9;color:var(--text);box-shadow:0 1px #0000000a;transition:transform .12s ease,box-shadow .16s ease,background .16s ease,border-color .16s ease}.btn:hover{background:#fff;box-shadow:var(--shadow-sm);transform:translateY(-1px);border-color:#00000024}.btn:active{transform:translateY(0);box-shadow:0 2px 10px #0000000f}.btn-primary{border:1px solid rgba(0,113,227,.2);background:linear-gradient(135deg,#0071e3,#005bb5);color:#fff;box-shadow:0 10px 24px #0071e32e}.btn-primary:hover{box-shadow:0 14px 34px #0071e33d;border-color:#0071e347}.card{background:#ffffffeb;border:1px solid var(--border-2);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);backdrop-filter:blur(10px)}.muted{color:var(--muted)}