*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; color: #1A202C; background: #fff; line-height: 1.5; -webkit-font-smoothing: antialiased; }
        a { text-decoration: none; color: inherit; }
        ul { list-style: none; }
        img { max-width: 100%; display: block; }