body {
	margin: 0;
	padding: 0;
	background: linear-gradient(135deg, #283e51 0%, #485563 100%);
	min-height: 100vh;
	font-family: 'Noto Sans TC', 'Microsoft JhengHei', Arial, sans-serif;
	display: flex;
	align-items: center;
	justify-content: center;
}
.container {
	background: #F8F6F0;
	border-radius: 22px;
	box-shadow: 0 8px 32px rgba(33, 50, 80, 0.22), 0 2px 10px rgba(0,0,0,0.09);
	padding: 2.5rem 2rem 1.2rem 2rem;
	max-width: 400px;
	width: 100%;
	min-height: 400px;
	display: flex;
	flex-direction: column;
	align-items: center;
	position: relative;
}
.logo {
	width: 90px;
	height: 90px;
	margin-bottom: 1.1rem;
	margin-top: -0.5rem;
	object-fit: contain;
	border-radius: 18px;
	box-shadow: 0 2px 8px rgba(40,62,81,0.15);
	background: #fff;
}
h2 {
	color: #283e51;
	margin-bottom: 1.1rem;
	font-size: 1.7rem;
	font-weight: 700;
	font-family: Microsoft Yahei, Helvetica, Arial, sans-serif;
	letter-spacing: 0.05em;
}
.desc {
	color: #555;
	font-size: 1rem;
	margin-bottom: 1.6rem;
	text-align: center;
}
.g_id_signin {
	margin-bottom: 1.2rem;
	width: 100%;
	display: flex;
	justify-content: center;
}
#errorMsg {
	color: #e74c3c;
	background: #fff3f2;
	border: 1px solid #e74c3c;
	border-radius: 5px;
	padding: 0.7em 1em;
	margin-top: 1rem;
	font-size: 1em;
	width: 100%;
	box-sizing: border-box;
	text-align: center;
}
.copyright {
	position: absolute;
	left: 0; right: 0; bottom: 1.2rem;
	width: 100%;
	text-align: center;
	color: #aaa;
	font-size: 0.93em;
	letter-spacing: 0.03em;
	user-select: none;
}
@media (max-width: 600px) {
	.container {
		padding: 1.2rem 0.7rem 1.2rem 0.7rem;
		max-width: 98vw;
		min-height: 420px;
	}
	h2 {
		font-size: 1.25rem;
	}
	.logo {
		width: 70px;
		height: 70px;
		margin-bottom: 0.7rem;
	}
}