body {
	margin: 0;
	color: #3b3b3b;
	font: 14px/1.7 "PingFang SC", "Helvetica Neue", Arial, sans-serif;
	background:
		radial-gradient(circle at top left, rgba(0, 105, 204, 0.18), transparent 36%),
		radial-gradient(circle at right center, rgba(68, 176, 117, 0.14), transparent 30%),
		linear-gradient(180deg, #f7fafc 0%, #eef3f7 100%);
}

.main {
	min-height: calc(100vh - 84px);
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 48px 20px;
	box-sizing: border-box;
}

.error-shell {
	width: 100%;
	max-width: 720px;
	padding: 36px 32px;
	text-align: center;
	border: 1px solid rgba(255, 255, 255, 0.8);
	border-radius: 28px;
	background: rgba(255, 255, 255, 0.92);
	box-shadow: 0 24px 60px rgba(19, 44, 72, 0.12);
	-webkit-backdrop-filter: blur(10px);
	backdrop-filter: blur(10px);
}

.error-brand {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	color: #1c2e40;
	text-decoration: none;
}

.error-brand img {
	width: 48px;
	height: 48px;
	display: block;
}

.error-brand span {
	font-size: 18px;
	font-weight: 600;
}

.error-kicker {
	margin-top: 18px;
	color: #0069cc;
	font-size: 12px;
	font-weight: 700;
	letter-spacing: 0.16em;
	text-transform: uppercase;
}

.title {
	margin-top: 18px;
	color: #1b2e41;
	font-size: clamp(96px, 16vw, 160px);
	line-height: 1;
	font-weight: 700;
}

.subtitle {
	margin: 18px 0 0;
	font-size: clamp(24px, 4vw, 36px);
	line-height: 1.3;
}

.tips {
	max-width: 520px;
	margin: 12px auto 0;
	color: #74808b;
}

.loading {
	margin-top: 28px;
}

.loading p {
	margin: 0 0 10px;
	color: #74808b;
}

.loading-track {
	width: 100%;
	height: 8px;
	overflow: hidden;
	border-radius: 999px;
	background: #e3ebf2;
}

.loading-track span {
	display: block;
	width: 0;
	height: 100%;
	border-radius: inherit;
	background: linear-gradient(90deg, #0069cc 0%, #44b075 100%);
	transition: width 0.2s ease;
}

.link {
	display: flex;
	justify-content: center;
	gap: 12px;
	margin-top: 28px;
}

.link a {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	min-width: 140px;
	padding: 12px 18px;
	border-radius: 999px;
	text-decoration: none;
	font-size: 15px;
	font-weight: 600;
	transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.link a:hover {
	transform: translateY(-1px);
}

.link-primary {
	color: #fff;
	background: #0069cc;
	box-shadow: 0 12px 24px rgba(0, 105, 204, 0.22);
}

.link-secondary {
	color: #1c2e40;
	background: #edf3f8;
}

.copyright {
	padding: 24px 20px 28px;
	color: #7e8994;
	text-align: center;
}

.copyright p {
	margin: 0;
}

@media screen and (max-width: 640px) {
	.main {
		padding: 28px 16px;
	}

	.error-shell {
		padding: 28px 20px;
		border-radius: 22px;
	}

	.link {
		flex-direction: column;
	}

	.link a {
		width: 100%;
	}
}