:root { color-scheme: light; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif; color: #202b32; background: #edf2f5; --accent: #487f72; --muted: #6c7478; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; min-height: 100dvh; display: grid; place-items: center; padding: 28px 18px; }
.login-card { width: 100%; max-width: 420px; padding: 36px; border: 1px solid #e2e7e9; border-radius: 20px; background: #fff; box-shadow: 0 12px 40px #243b4b08; }
.brand { margin: 0 0 12px; color: var(--accent); font-size: 11px; font-weight: 750; letter-spacing: .18em; }
h1 { margin: 0; font-size: 25px; font-weight: 650; }
.choices { display: grid; gap: 14px; margin-top: 28px; }
a { text-decoration: none; color: var(--accent); }
.choice { display: flex; align-items: center; justify-content: space-between; padding: 21px 20px; border: 1px solid #dce5e1; border-radius: 12px; color: #25352f; font-size: 16px; background: #f8fbfa; }
.choice:hover { border-color: var(--accent); background: #f0f8f5; }
.intro { margin: 14px 0 24px; color: var(--muted); font-size: 13px; line-height: 1.8; }
label { display: block; margin-bottom: 8px; font-size: 13px; }
input, button { font: inherit; }
input { width: 100%; min-width: 0; padding: 14px 12px; border: 1px solid #dce3e5; border-radius: 9px; font-size: 18px; letter-spacing: .12em; }
input::placeholder { font-size: 14px; letter-spacing: 0; color: #93999c; }
.primary { display: block; width: 100%; padding: 13px 12px; margin-top: 16px; text-align: center; border: 0; border-radius: 9px; background: var(--accent); color: #fff; font-size: 15px; font-weight: 600; cursor: pointer; }
button:disabled, input:disabled { opacity: .65; cursor: not-allowed; }
.notice, .confirm p { font-size: 13px; line-height: 1.8; overflow-wrap: anywhere; }
.notice:empty { display: none; }
.notice.error { color: #ad3434; }
.confirm { margin-top: 18px; padding: 16px; background: #f5f8f7; border-radius: 10px; }
.confirm p { margin: 0; }
.help-link, .back-link { display: block; margin-top: 20px; font-size: 12px; text-align: center; }
.help-link { color: var(--muted); }
.text-button { display: block; margin: 14px auto 0; border: 0; background: none; color: var(--accent); font-size: 13px; cursor: pointer; }
[hidden] { display: none !important; }
:focus-visible { outline: 3px solid #71a9ce; outline-offset: 3px; }
@media (max-width: 480px) { .login-card { padding: 28px 24px; } }