:root { color-scheme: dark; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; color: #e8e9f0; background: #13141b; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; min-height: 100svh; display: grid; place-items: center; padding: 28px 18px; }
[hidden] { display: none !important; }
.login-card { width: min(100%, 440px); padding: 32px; border: 1px solid #353744; border-radius: 16px; background: #1b1c25; box-shadow: 0 16px 48px #0003; }
.brand { display: flex; justify-content: space-between; align-items: center; gap: 16px; font-weight: 650; font-size: 17px; letter-spacing: .15px; }
h1 { margin: 32px 0 10px; font-size: 25px; line-height: 1.35; font-weight: 650; letter-spacing: -.5px; }
.intro { color: #afb0c0; font-size: 14px; line-height: 1.75; margin: 0 0 26px; }
label { display: block; font-size: 14px; font-weight: 550; margin-bottom: 9px; }
.input-row { display: flex; border: 1px solid #494b5d; border-radius: 8px; background: #12131a; transition: border-color .15s; }
.input-row:focus-within { border-color: #b2a5ff; outline: 2px solid #b2a5ff28; }
input { min-width: 0; width: 100%; padding: 13px 12px; font: inherit; font-size: 16px; line-height: 1.4; border: 0; outline: 0; border-radius: 8px; background: transparent; color: #f0f0f6; }
input::placeholder { color: #858798; }
button, a { -webkit-tap-highlight-color: transparent; }
button { font: inherit; cursor: pointer; }
.toggle { flex: none; padding: 0 13px; border: 0; border-radius: 7px; background: transparent; color: #c3badf; font-size: 13px; }
.toggle:hover { color: #fff; }
#login-button { margin-top: 20px; }
.primary { display: flex; justify-content: center; align-items: center; width: 100%; min-height: 46px; padding: 11px 16px; border: 1px solid transparent; border-radius: 8px; background: #b2a2ef; color: #1c142c; font-size: 14px; font-weight: 650; text-decoration: none; }
.primary:hover { background: #c3b6f6; }
.secondary { width: 100%; min-height: 44px; margin-top: 10px; border: 1px solid #494b5d; border-radius: 8px; background: transparent; color: #d0d0de; font-size: 14px; }
.secondary:hover { background: #292a36; }
button:disabled { opacity: .6; cursor: wait; }
button:focus-visible, a:focus-visible { outline: 2px solid #d6c8ff; outline-offset: 3px; }
.signed-message { font-size: 14px; line-height: 1.7; margin: 0 0 18px; color: #c4c6d6; }
.feedback { min-height: 20px; margin: 12px 0 0; font-size: 13px; line-height: 1.6; color: #ffc2c2; overflow-wrap: anywhere; }
footer { margin-top: 20px; padding-top: 20px; border-top: 1px solid #333440; font-size: 12px; line-height: 1.9; color: #9799ab; }
@media (max-width: 420px) { .login-card { padding: 25px 22px; } h1 { font-size: 23px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }