/* ---------- 全局重置 ---------- */
* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

body {
	font-family: inherit;
	color: #1a2634;
	background: #ffffff;
	line-height: 1.6;
}

.app-container {
	max-width: 80%;
	margin: 0 auto;
	padding: 0 24px;
}

        /* ---------- 通用组件 ---------- */
.section-label {
	display: inline-block;
	background: rgba(0, 102, 255, 0.06);
	border: 1px solid rgba(0, 102, 255, 0.08);
	border-radius: 40px;
	padding: 4px 20px;
	font-size: 0.78rem;
	font-weight: 600;
	color: #0066ff;
	letter-spacing: 0.3px;
	margin-bottom: 10px;
}

.section-heading {
	font-size: 2.1rem;
	font-weight: 800;
	color: #0a1e2f;
	line-height: 1.2;
	margin-bottom: 8px;
}

.section-heading .accent {
	color: #0066ff;
}

.section-desc {
	font-size: 1rem;
	color: #3d5368;
	max-width: 600px;
	line-height: 1.8;
}

.section-desc strong {
	color: #0a1e2f;
}

        /* ---------- 按钮 ---------- */
.btn-primary {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	background: #0066ff;
	color: #fff;
	padding: 14px 38px;
	border-radius: 50px;
	font-weight: 700;
	font-size: 1rem;
	text-decoration: none;
	transition: all 0.3s ease;
	box-shadow: 0 6px 24px rgba(0, 102, 255, 0.20);
	border: none;
	cursor: pointer;
	letter-spacing: 0.2px;
}

.btn-primary:hover {
	background: #0052cc;
	transform: translateY(-3px);
	box-shadow: 0 12px 36px rgba(0, 102, 255, 0.30);
}

.btn-secondary {
	display: inline-flex;
	align-items: center;
	gap: 10px;
	background: transparent;
	color: #0a1e2f;
	padding: 14px 32px;
	border-radius: 50px;
	font-weight: 600;
	font-size: 1rem;
	text-decoration: none;
	transition: all 0.3s ease;
	border: 1.5px solid rgba(0, 102, 255, 0.12);
	cursor: pointer;
}

.btn-secondary:hover {
	border-color: #0066ff;
	color: #0066ff;
	background: rgba(0, 102, 255, 0.02);
	transform: translateY(-2px);
}

.text-center {
	text-align: center;
}

        /* ---------- 导航 ---------- */
.site-nav {
	padding: 18px 0;
	border-bottom: 1px solid rgba(0, 102, 255, 0.04);
	background: #ffffff;
	position: sticky;
	top: 0;
	z-index: 100;
}

.nav-inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	flex-wrap: wrap;
}

.brand-logo a {
	display: flex;
	align-items: center;
	gap: 8px;
	text-decoration: none;
}

.brand-logo img {
	height: 38px;
	width: auto;
	display: block;
}

.nav-menu {
	display: flex;
	align-items: center;
	gap: 6px;
	flex-wrap: wrap;
}

.nav-menu a {
	padding: 8px 16px;
	font-size: 0.92rem;
	font-weight: 500;
	color: #3d5368;
	text-decoration: none;
	border-radius: 8px;
	transition: 0.2s;
}

.nav-menu a:hover {
	color: #0066ff;
	background: rgba(0, 102, 255, 0.04);
}

.nav-menu .nav-cta {
	background: #0066ff;
	color: #fff;
	padding: 8px 22px;
	border-radius: 40px;
	font-weight: 600;
}

.nav-menu .nav-cta:hover {
	background: #0052cc;
	color: #fff;
}

.hamburger-toggle {
	display: none;
	background: none;
	border: none;
	font-size: 1.5rem;
	color: #0a1e2f;
	cursor: pointer;
	padding: 4px 8px;
}

        /* ---------- 页脚 ---------- */
.site-footer {
	padding: 50px 0 30px;
	background: #0a1e2f;
	color: rgba(255, 255, 255, 0.7);
}

.footer-grid {
	display: grid;
	grid-template-columns: 2fr 1fr 1fr 1fr;
	gap: 40px;
	padding-bottom: 30px;
	border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-brand .logo-text {
	font-size: 1.5rem;
	font-weight: 800;
	color: #fff;
	display: flex;
	align-items: center;
	gap: 8px;
}

.footer-brand .logo-text i {
	color: #0066ff;
}

.footer-brand .logo-text span {
	color: #0066ff;
}

.footer-brand p {
	font-size: 0.9rem;
	line-height: 1.8;
	max-width: 380px;
	margin-top: 8px;
}

.footer-brand p strong {
	color: #fff;
}

.footer-col h4 {
	font-size: 0.95rem;
	font-weight: 700;
	color: #fff;
	margin-bottom: 14px;
}

.footer-col ul {
	list-style: none;
	padding: 0;
}

.footer-col ul li {
	margin-bottom: 8px;
}

.footer-col ul li a {
	color: rgba(255, 255, 255, 0.6);
	text-decoration: none;
	font-size: 0.88rem;
	transition: 0.2s;
}

.footer-col ul li a:hover {
	color: #fff;
}

.footer-bottom {
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding-top: 20px;
	font-size: 0.8rem;
	color: rgba(255, 255, 255, 0.4);
	flex-wrap: wrap;
	gap: 12px;
}

.footer-bottom a {
	color: rgba(255, 255, 255, 0.4);
	text-decoration: none;
}

.footer-bottom a:hover {
	color: rgba(255, 255, 255, 0.7);
}

.footer-bottom .sep {
	margin: 0 8px;
	opacity: 0.3;
}

        /* ---------- 返回顶部 ---------- */
.back-top-btn {
	position: fixed;
	bottom: 28px;
	right: 28px;
	width: 46px;
	height: 46px;
	background: #0066ff;
	color: #fff;
	border: none;
	border-radius: 50%;
	font-size: 1.1rem;
	cursor: pointer;
	box-shadow: 0 4px 16px rgba(0, 102, 255, 0.25);
	transition: 0.3s;
	z-index: 50;
	display: none;
	align-items: center;
	justify-content: center;
}

.back-top-btn:hover {
	background: #0052cc;
	transform: translateY(-3px);
	box-shadow: 0 8px 28px rgba(0, 102, 255, 0.35);
}

.back-top-btn.visible {
	display: flex;
}

        /* ---------- 响应式（公共） ---------- */
@media (max-width: 1024px) {
	.app-container {
		padding: 0 30px;
	}

	.footer-grid {
		grid-template-columns: 1fr 1fr;
	}
}

@media (max-width: 768px) {
	.app-container {
		padding: 0 20px;
		max-width: 100%;
	}

	.hamburger-toggle {
		display: block;
	}

	.nav-menu {
		display: none;
		flex-direction: column;
		width: 100%;
		gap: 8px;
		padding: 16px 0 8px;
		border-top: 1px solid rgba(0, 102, 255, 0.06);
		margin-top: 8px;
		align-items: center;
	}

	.nav-menu.open {
		display: flex;
	}

	.nav-menu a {
		width: 100%;
		text-align: center;
		padding: 10px;
	}

	.footer-grid {
		grid-template-columns: 1fr;
		gap: 28px;
		text-align: center;
	}

	.footer-brand p {
		max-width: 100%;
	}

	.footer-bottom {
		flex-direction: column;
		text-align: center;
	}

	.back-top-btn {
		bottom: 20px;
		right: 20px;
		width: 42px;
		height: 42px;
		font-size: 1rem;
	}

	.section-heading {
		font-size: 1.6rem;
	}
}

@media (max-width: 480px) {
	.app-container {
		padding: 0 14px;
		max-width: 100%;
	}

	.btn-primary {
		padding: 12px 28px;
		font-size: 0.9rem;
		width: 100%;
		justify-content: center;
	}

	.btn-secondary {
		padding: 12px 24px;
		font-size: 0.9rem;
		width: 100%;
		justify-content: center;
	}

	.back-top-btn {
		bottom: 16px;
		right: 16px;
		width: 38px;
		height: 38px;
		font-size: 0.85rem;
	}

	.section-heading {
		font-size: 1.4rem;
	}

	.section-desc {
		font-size: 0.92rem;
	}
}