:root {
    --bg: #fafaf8;
    --fg: #1f1b2e;
    --accent: #8B7EC8;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--fg); font-family: system-ui, -apple-system, "Segoe UI", sans-serif; }
main { max-width: 680px; margin: 0 auto; padding: 48px 20px; }
h1 { font-weight: 600; letter-spacing: -0.02em; }
input { padding: 8px 10px; border: 1px solid #ddd; border-radius: 8px; font: inherit; }