:root { color-scheme: light; font-family: "Noto Sans SC", "Microsoft YaHei", sans-serif; color: #17313f; background: #edf4f5; }
* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; display: grid; place-items: center; padding: 24px; background: radial-gradient(circle at 20% 20%, #d3e8e4, transparent 38%), radial-gradient(circle at 85% 80%, #d9e5ef, transparent 36%), #edf4f5; }
.login-card { width: min(100%, 430px); padding: 38px; border: 1px solid #d3e0e1; border-radius: 20px; background: rgb(255 255 255 / 94%); box-shadow: 0 20px 55px rgb(35 70 81 / 12%); }
.eyebrow { margin: 0; color: #4b777b; font-size: .75rem; font-weight: 700; letter-spacing: .14em; }
h1 { margin: 10px 0 4px; font-size: 1.8rem; letter-spacing: .04em; }
.lead { margin: 0; color: #5e727b; }
.notice { margin: 25px 0; padding: 12px; border-radius: 10px; background: #f5f8f8; color: #566b72; font-size: .86rem; line-height: 1.65; }
form { display: grid; gap: 10px; }
label { font-size: .9rem; font-weight: 700; }
input { width: 100%; padding: 12px; border: 1px solid #b6c8ca; border-radius: 9px; color: inherit; font: inherit; }
input:focus { outline: 3px solid #b9d6d1; border-color: #4b777b; }
button { margin-top: 8px; padding: 12px 16px; border: 0; border-radius: 9px; background: #356b70; color: white; cursor: pointer; font: inherit; font-weight: 700; }
button:hover { background: #28585d; }
.error { margin: 0; color: #a3313f; font-size: .9rem; }