:root{--bg-color: #f5f5f7;--card-bg: #ffffff;--text-primary: #1d1d1f;--text-secondary: #86868b;--accent-blue: #0066cc;--accent-blue-hover: #004499;--divider: #d2d2d7;--error: #ff3b30;--success: #34c759;--font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";--radius-lg: 18px;--radius-md: 12px;--radius-sm: 8px;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow-md: 0 4px 6px rgba(0,0,0,.05);--shadow-lg: 0 10px 15px rgba(0,0,0,.1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-main);background-color:var(--bg-color);color:var(--text-primary);line-height:1.47059;font-weight:400;letter-spacing:-.022em;-webkit-font-smoothing:antialiased;min-height:100vh}button{cursor:pointer;border:none;font-family:inherit}a{text-decoration:none;color:inherit}h1,h2,h3,h4,h5,h6{font-weight:600;letter-spacing:-.003em}h1{font-size:48px;line-height:1.08349}h2{font-size:32px;line-height:1.1}h3{font-size:24px;line-height:1.16667}p{font-size:17px;line-height:1.47059;color:var(--text-secondary)}.container{max-width:980px;margin:0 auto;padding:0 22px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 24px;border-radius:980px;font-size:14px;font-weight:600;transition:all .3s cubic-bezier(0,0,.5,1)}.btn-primary{background-color:var(--text-primary);color:#fff}.btn-primary:hover{background:#333;transform:scale(1.02)}.btn-link{color:var(--accent-blue);background:transparent}.btn-link:hover{text-decoration:underline}.card{background:var(--card-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:30px;transition:transform .3s ease}.glass{background:#ffffffb3;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}