* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; display: grid; place-items: center; padding: 24px; background: #f3f6fb; color: #172554; font: 16px/1.5 system-ui, -apple-system, "Microsoft YaHei", sans-serif; }
.login { width: min(100%, 420px); padding: 34px; background: white; border: 1px solid #dce4f1; border-radius: 18px; box-shadow: 0 18px 50px #14275d17; }
.brand { color: #294fc7; font-weight: 800; letter-spacing: .14em; }
h1 { margin: 12px 0 4px; font-size: 28px; }
p { margin: 0 0 24px; color: #64748b; }
form { display: grid; gap: 9px; }
label { font-weight: 650; }
input { width: 100%; height: 44px; padding: 0 12px; border: 1px solid #cbd5e1; border-radius: 9px; font: inherit; }
input:focus { outline: 2px solid #446be8; outline-offset: 1px; }
.error { margin: 0; min-height: 20px; color: #c02635; font-size: 14px; }
button { height: 46px; border: 0; border-radius: 9px; background: #2958d9; color: white; font: inherit; font-weight: 700; cursor: pointer; }
button:hover { background: #1d45b0; }
small { display: block; margin-top: 22px; color: #64748b; }