:root { font-family: system-ui, sans-serif; color: #183340; background: #f5f7fa; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; }
main { width: min(30rem, calc(100vw - 4rem)); padding: 2rem; background: white; border-radius: 1rem; box-shadow: 0 .5rem 2rem #18334012; }
h1 { font-size: 1.8rem; margin-top: 0; }
p { line-height: 1.5; }
label { display: block; font-weight: 600; margin: 1.5rem 0 .5rem; }
.address { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }
input { min-width: 8rem; flex: 1; width: 100%; box-sizing: border-box; border: 1px solid #738492; border-radius: .4rem; font: inherit; padding: .7rem; }
input:focus-visible, button:focus-visible { outline: 3px solid #87c900; outline-offset: 2px; }
button { margin-top: 1rem; width: 100%; padding: .8rem; border: 0; border-radius: .4rem; background: #183340; color: white; font: inherit; font-weight: 600; cursor: pointer; }
.help, #suffix { font-size: .9rem; color: #526675; }