:root { color-scheme: light; font-family: Inter, "PingFang SC", "Microsoft YaHei", sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; color: #17252e;
  background: #e9ece8; background-image: linear-gradient(rgba(20,53,65,.055) 1px, transparent 1px), linear-gradient(90deg, rgba(20,53,65,.055) 1px, transparent 1px); background-size: 28px 28px; }
main { width: min(440px, calc(100vw - 36px)); padding: 48px; background: #f8f7f2; border: 1px solid #aeb7b6; box-shadow: 12px 12px 0 #173846; position: relative; }
main::before { content: ""; position: absolute; left: 0; top: 0; width: 7px; height: 100%; background: #e65e2f; }
.mark { width: 48px; height: 48px; display: grid; place-items: center; border: 2px solid #173846; color: #173846; font-weight: 800; letter-spacing: -2px; }
.eyebrow { margin: 28px 0 10px; color: #52707b; text-transform: uppercase; letter-spacing: .14em; font-size: 12px; }
h1 { margin: 0; color: #102d39; font-family: Georgia, "Songti SC", serif; font-size: 44px; letter-spacing: -.04em; }
.intro { line-height: 1.7; color: #53656c; margin: 12px 0 30px; }
label { display: block; font-size: 13px; font-weight: 700; margin-bottom: 8px; }
input { width: 100%; border: 1px solid #8b999c; background: white; font: inherit; padding: 13px 14px; outline: none; }
input:focus { border-color: #e65e2f; box-shadow: 0 0 0 3px rgba(230,94,47,.14); }
button { width: 100%; margin-top: 14px; padding: 14px; border: 0; background: #173846; color: white; font: inherit; font-weight: 700; text-align: left; cursor: pointer; }
button span { float: right; color: #f68961; }
.error { border-left: 3px solid #b4382b; padding: 10px 12px; background: #f7e4df; color: #8f2d22; font-size: 14px; }
.foot { margin: 28px 0 0; padding-top: 18px; border-top: 1px solid #d6dad6; color: #7a8688; font-size: 11px; }
@media (max-width: 520px) { main { padding: 34px 28px; box-shadow: 7px 7px 0 #173846; } h1 { font-size: 38px; } }