* { box-sizing: border-box; }
body { margin: 0; background: #f4f6fa; color: #1f2937; font-family: system-ui, -apple-system, "Segoe UI", sans-serif; line-height: 1.7; }
main { max-width: 620px; margin: 8vh auto; padding: 32px; background: #fff; border: 1px solid #dce2eb; border-radius: 20px; }
.eyebrow { margin: 0 0 8px; color: #475569; font-size: 14px; }
h1 { margin: 0 0 18px; font-size: clamp(27px, 6vw, 36px); line-height: 1.3; }
.notice { font-weight: 650; }
button { width: 100%; min-height: 52px; margin: 12px 0; padding: 12px 20px; border: 0; border-radius: 10px; background: #174ec2; color: #fff; font: inherit; font-weight: 650; cursor: pointer; }
button:focus-visible { outline: 3px solid #ef9200; outline-offset: 4px; }
button:disabled { opacity: .65; cursor: wait; }
#result { min-height: 96px; margin-top: 12px; padding: 14px 16px; border-radius: 10px; background: #f1f5f9; }
#message { margin: 0; font-weight: 650; }
#detail { margin: 4px 0 0; font-size: 14px; overflow-wrap: anywhere; }
#result[data-state="success"] { background: #edf8f0; color: #14532d; }
#result[data-state="failure"] { background: #fff0ef; color: #8c1d18; }
.privacy { margin: 22px 0 0; color: #586477; font-size: 13px; }
@media (max-width: 680px) { main { margin: 24px 16px; padding: 26px 22px; } }