* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Segoe UI', system-ui, sans-serif; background: #f4f6fa; min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; }
.card { background: #fff; border-radius: 12px; box-shadow: 0 4px 24px rgba(0,0,0,0.08); padding: 48px 40px; width: 100%; max-width: 480px; }
.logo { font-size: 26px; font-weight: 800; color: #1a1a2e; letter-spacing: -1px; margin-bottom: 6px; }
.logo span { color: #2563eb; }
.tagline { font-size: 13px; color: #6b7280; margin-bottom: 24px; line-height: 1.6; padding-bottom: 24px; border-bottom: 1px solid #f0f0f0; }
.intro { background: #eff6ff; border-left: 3px solid #2563eb; padding: 14px 16px; border-radius: 0 8px 8px 0; font-size: 13px; color: #1e40af; line-height: 1.7; margin-bottom: 28px; }
label { display: block; font-size: 13px; font-weight: 600; color: #374151; margin-bottom: 6px; }
input { width: 100%; padding: 12px 16px; border: 1.5px solid #e5e7eb; border-radius: 8px; font-size: 15px; color: #111827; outline: none; transition: border 0.2s; margin-bottom: 18px; }
input:focus { border-color: #2563eb; }
input::placeholder { color: #9ca3af; }
.hint { font-size: 11px; color: #9ca3af; margin-top: -14px; margin-bottom: 18px; }
button { width: 100%; padding: 14px; background: #2563eb; color: #fff; border: none; border-radius: 8px; font-size: 15px; font-weight: 600; cursor: pointer; transition: background 0.2s; margin-top: 6px; }
button:hover { background: #1d4ed8; }
button:disabled { background: #93c5fd; cursor: not-allowed; }
.error { background: #fef2f2; border: 1px solid #fca5a5; color: #b91c1c; padding: 12px 16px; border-radius: 8px; font-size: 13px; margin-bottom: 16px; display: none; }
.security { margin-top: 20px; font-size: 11px; color: #9ca3af; text-align: center; line-height: 1.6; }
.footer { margin-top: 28px; font-size: 11px; color: #9ca3af; text-align: center; }
.icon { font-size: 56px; margin-bottom: 20px; text-align: center; }
h1 { font-size: 22px; font-weight: 700; color: #111827; margin-bottom: 12px; text-align: center; }
p { color: #6b7280; font-size: 14px; line-height: 1.7; margin-bottom: 8px; text-align: center; }
.company { display: inline-block; background: #eff6ff; color: #2563eb; font-weight: 600; padding: 6px 14px; border-radius: 20px; font-size: 14px; margin: 12px 0 20px; }
.info { background: #f0fdf4; border: 1px solid #bbf7d0; border-radius: 8px; padding: 14px; font-size: 12px; color: #15803d; line-height: 1.6; }
.error-msg { background: #fef2f2; border: 1px solid #fca5a5; border-radius: 8px; padding: 14px; font-size: 12px; color: #b91c1c; margin: 20px 0; }
a.btn { display: inline-block; margin-top: 16px; padding: 12px 24px; background: #2563eb; color: #fff; border-radius: 8px; font-size: 14px; font-weight: 600; text-decoration: none; }
a.btn:hover { background: #1d4ed8; }