:root {
            --color-primary: #007AFF;
            --color-secondary: #5E5E5E;
            --color-background: #FFFFFF;
            --color-text-primary: #1D1D1F;
            --color-text-secondary: #86868B;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Icons', 'Helvetica Neue', Helvetica, Arial, sans-serif;
            line-height: 1.6;
            color: var(--color-text-primary);
            background-color: var(--color-background);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        .hero {
            text-align: center;
            padding: 4rem 2rem;
            background: linear-gradient(135deg, rgba(0,122,255,0.1), transparent);
        }

        .btn {
            display: inline-block;
            padding: 12px 24px;
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .btn.primary {
            background-color: var(--color-primary);
            color: white;
        }

        .btn:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        @media (max-width: 768px) {
            .hero {
                padding: 2rem 1rem;
            }
        }