:root { color-scheme: light; font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #183329; background: #f3f6ef; }
* { box-sizing: border-box; }
body { margin: 0; }
.page { max-width: 740px; margin: 0 auto; padding: 64px 20px; }
.eyebrow { color: #2d693b; font-size: .82rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; margin-bottom: 20px; }
.panel { background: #fff; border: 1px solid #d8e5d7; border-radius: 18px; box-shadow: 0 14px 40px rgba(24, 51, 41, .06); padding: clamp(24px, 5vw, 48px); }
h1 { margin: 0 0 12px; font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.15; }
.intro { margin: 0 0 32px; line-height: 1.6; color: #4d6255; }
fieldset { border: 0; padding: 0; margin: 0 0 30px; }
legend { padding: 0; margin-bottom: 14px; font-size: 1.1rem; font-weight: 750; }
.field { margin-bottom: 17px; min-width: 0; }
label { display: block; font-weight: 650; margin-bottom: 7px; }
input { display: block; width: 100%; min-height: 44px; border: 1px solid #a7bbaa; border-radius: 8px; padding: 10px 12px; background: #fff; color: inherit; font: inherit; }
input:focus { outline: 3px solid #b4ddbd; outline-offset: 1px; border-color: #367545; }
input[aria-invalid="true"] { border-color: #b33b32; }
.columns { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.street-row { grid-template-columns: minmax(0, 4fr) minmax(100px, 1fr); }
.postcode-row { grid-template-columns: minmax(100px, 1fr) minmax(0, 3fr); }
.hint, .fineprint { color: #5c7063; font-size: .88rem; line-height: 1.5; }
.hint { margin: -5px 0 0; }
.fineprint { margin: 14px 0 0; }
.field-error { display: block; margin-top: 5px; color: #9b2f28; }
.notice { padding: 12px 14px; border-radius: 8px; margin-bottom: 24px; }
.notice.error { background: #fff0ee; color: #8f2f28; }
button { border: 0; border-radius: 8px; padding: 13px 20px; background: #27663a; color: white; font: inherit; font-weight: 750; cursor: pointer; }
button:hover { background: #1d512e; }
.link { color: #236137; font-weight: 700; }
.trap { position: absolute; left: -10000px; width: 1px; height: 1px; overflow: hidden; }
@media (max-width: 560px) { .page { padding-top: 32px; } .columns, .street-row, .postcode-row { grid-template-columns: 1fr; gap: 0; } }