:root { color-scheme: light; font-family: Inter, Arial, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: #f3f6fb; color: #17233f; }
main { width: min(92vw, 460px); padding: 36px; background: #fff; border: 1px solid #dce3ef; border-radius: 20px; box-shadow: 0 18px 50px rgba(18,35,66,.10); }
.eyebrow { margin: 0 0 10px; color: #63708a; font-size: 12px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1 { margin: 0 0 12px; font-size: 28px; }
p { margin: 0; color: #536079; line-height: 1.6; }
#google-button { min-height: 44px; margin-top: 26px; }
#status { min-height: 24px; margin-top: 18px; font-size: 14px; }
.error { color: #a11b2b; }