:root { --ink: #111820; --muted: #5d6b7a; --line: #dfe4ea; --accent: #0f7a66; --bg: #f4f6f8; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; background: var(--bg);
       color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif; }
main { width: min(32rem, calc(100% - 2rem)); background: #fff; border: 1px solid var(--line);
       border-radius: 12px; padding: 2rem; }
h1 { margin: 0 0 .5rem; font-size: 1.5rem; }
label { display: block; font-weight: 600; margin: 1.5rem 0 .4rem; }
.address { display: flex; align-items: center; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.address input { flex: 1; min-width: 0; border: 0; padding: .7rem .8rem; font: inherit; }
.address input:focus { outline: none; }
.address:focus-within { outline: 2px solid var(--accent); outline-offset: 1px; }
#suffix { padding: 0 .8rem; color: var(--muted); white-space: nowrap; }
button { margin-top: 1rem; width: 100%; padding: .75rem; border: 0; border-radius: 8px;
         background: var(--accent); color: #fff; font: inherit; font-weight: 600; cursor: pointer; }
#error { color: #b3261e; }
.muted { color: var(--muted); margin-top: 1.5rem; }
a { color: var(--accent); }