:root { color-scheme: light; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #18352f; background: #f3f5ef; }
* { box-sizing: border-box; }
body { margin: 0; }
main { max-width: 820px; margin: 0 auto; padding: 44px 22px; }
header { margin-bottom: 30px; }
.eyebrow { font-size: 12px; font-weight: 750; letter-spacing: .14em; color: #497363; }
h1 { font-size: clamp(30px, 5vw, 42px); line-height: 1.13; margin: 12px 0 16px; letter-spacing: -.035em; }
h2 { font-size: 20px; margin: 0 0 16px; }
p { line-height: 1.55; margin: 12px 0; }
.panel { background: white; border: 1px solid #d7e0d8; border-radius: 18px; padding: 26px; margin: 18px 0; box-shadow: 0 3px 12px #19362f05; }
label { display: block; margin-bottom: 9px; font-weight: 600; }
.pair-row, .controls { display: flex; gap: 10px; flex-wrap: wrap; }
input { flex: 1; min-width: 210px; border: 1px solid #9eb5a9; border-radius: 9px; padding: 12px; font: inherit; }
button { border: 1px solid #1d634e; background: #1d634e; color: white; border-radius: 10px; padding: 12px 21px; font: inherit; font-weight: 650; cursor: pointer; }
button:hover:not(:disabled) { background: #164b3b; }
button.secondary { background: white; color: #1d634e; }
button:disabled { opacity: .42; cursor: not-allowed; }
button:focus-visible, input:focus-visible { outline: 3px solid #b4dbc6; outline-offset: 3px; }
#status { font-weight: 650; }
.small, footer { font-size: 13px; color: #536960; line-height: 1.6; }
footer { margin: 26px 6px; }
audio { width: 100%; margin: 12px 0; }
.message { border-left: 3px solid #c0d8ca; padding: 10px 14px; margin-top: 16px; background: #f7faf7; border-radius: 0 8px 8px 0; }
.message strong { display: block; margin-bottom: 5px; }
.message p { white-space: pre-wrap; margin: 0; }
.message.alfred { border-color: #1d634e; }
@media(max-width: 500px) { main { padding: 26px 14px; } .panel { padding: 20px; } }