:root {
	color-scheme: dark;
	--bg-top: #182944;
	--bg-low: #212531;
	--nav-bg: #1b2a46;
	--text: #eef2f8;
	--text-dim: rgba(238, 242, 248, 0.68);
	--text-faint: rgba(238, 242, 248, 0.45);
	--panel: rgba(255, 255, 255, 0.04);
	--panel-line: rgba(255, 255, 255, 0.1);
	--orange: #ff5900;
}

* {
	box-sizing: border-box;
	-webkit-tap-highlight-color: transparent;
}

html {
	scroll-behavior: smooth;
}

html,
body {
	margin: 0;
	padding: 0;
	background: var(--bg-low);
}

body {
	font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "HarmonyOS Sans SC",
		"Segoe UI", "Microsoft YaHei", Roboto, sans-serif;
	color: var(--text);
	background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-low) 64%);
	background-attachment: fixed;
}

a {
	color: var(--text);
	text-decoration: none;
}

img {
	max-width: 100%;
}

h1, h2, h3, p {
	margin: 0;
}

.container {
	max-width: 1280px;
	margin: 0 auto;
	padding: 0 40px;
}

/* ---------- 导航 ---------- */

.nav {
	position: sticky;
	top: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 20px;
	height: 68px;
	padding: 0 40px;
	background: rgba(27, 42, 70, 0.92);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.brand-logo {
	display: block;
	height: 30px;
}

.nav-links {
	display: flex;
	align-items: center;
	gap: 34px;
	font-size: 15px;
}

.nav-links a {
	color: var(--text-dim);
	transition: color 0.15s ease;
}

.nav-links a:hover {
	color: var(--text);
}

.nav-links a.active {
	color: var(--orange);
	font-weight: 600;
}

/* ---------- 按钮 ---------- */

.btn {
	display: inline-block;
	padding: 10px 24px;
	border-radius: 6px;
	font-size: 14px;
	font-weight: 600;
	text-align: center;
	transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:active {
	transform: scale(0.97);
}

.btn-primary {
	background: var(--orange);
	color: #ffffff;
}

.btn-primary:hover {
	background: #e65000;
	box-shadow: 0 6px 18px rgba(255, 89, 0, 0.35);
}

.btn-outline {
	border: 1px solid var(--orange);
	color: var(--orange);
}

.btn-outline:hover {
	background: rgba(255, 89, 0, 0.12);
}

.btn-ghost {
	background: rgba(255, 255, 255, 0.08);
	border: 1px solid rgba(255, 255, 255, 0.4);
	color: #ffffff;
}

.btn-ghost:hover {
	background: rgba(255, 255, 255, 0.16);
}

.btn-lg {
	padding: 14px 34px;
	font-size: 16px;
	font-weight: 700;
	letter-spacing: 1px;
}

.btn-row {
	display: flex;
	flex-wrap: wrap;
	gap: 14px;
}

/* ---------- Hero ---------- */

.hero {
	position: relative;
	min-height: 560px;
	display: flex;
	align-items: center;
	background: url("../img/site/hero.jpg") center 30% / cover no-repeat;
}

.hero::after {
	content: '';
	position: absolute;
	inset: 0;
	background: linear-gradient(180deg, rgba(24, 41, 68, 0.55) 0%, rgba(24, 41, 68, 0.15) 40%, var(--bg-top) 100%);
}

.hero-inner {
	position: relative;
	z-index: 1;
	display: flex;
	flex-direction: column;
	gap: 16px;
	width: 100%;
	padding-top: 48px;
	padding-bottom: 72px;
}

.hero h1 {
	font-size: 52px;
	font-weight: 700;
	letter-spacing: 3px;
	text-shadow: 0 4px 30px rgba(0, 0, 0, 0.6);
}

.hero-en {
	font-size: 18px;
	letter-spacing: 1px;
	color: rgba(238, 242, 248, 0.85);
	text-shadow: 0 2px 16px rgba(0, 0, 0, 0.6);
}

.hero .btn-row {
	margin-top: 18px;
}

/* ---------- 分区通用 ---------- */

.section {
	padding: 72px 0 8px;
}

.section-head {
	display: flex;
	flex-direction: column;
	align-items: center;
	text-align: center;
	gap: 10px;
	margin-bottom: 40px;
}

.section-head h2 {
	font-size: 32px;
	letter-spacing: 2px;
}

.section-en {
	font-size: 15px;
	letter-spacing: 1px;
	color: var(--text-faint);
}

/* ---------- 智能化解决方案 ---------- */

.sol-card {
	display: flex;
	align-items: center;
	gap: 48px;
	padding: 48px 52px;
	border-radius: 24px;
	border: 1px solid var(--panel-line);
	background: var(--panel);
	overflow: hidden;
}

.sol-copy {
	flex: 1;
	display: flex;
	flex-direction: column;
	gap: 20px;
}

.sol-copy h2 {
	font-size: 30px;
	letter-spacing: 2px;
}

.sol-copy p {
	font-size: 15.5px;
	line-height: 2;
	color: var(--text-dim);
}

.sol-shot {
	flex: none;
	width: 44%;
	max-width: 520px;
}

.sol-shot img {
	display: block;
	width: 100%;
}

/* ---------- 三位一体服务 ---------- */

.svc-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 24px;
}

.svc-card {
	display: flex;
	flex-direction: column;
	gap: 14px;
	padding: 20px 20px 26px;
	border-radius: 16px;
	border: 1px solid var(--panel-line);
	background: var(--panel);
}

.svc-card img {
	display: block;
	width: 100%;
	height: 220px;
	object-fit: cover;
	border-radius: 10px;
}

.svc-card h3 {
	font-size: 19px;
	letter-spacing: 1px;
	text-align: center;
	margin-top: 6px;
}

.svc-card p {
	font-size: 14px;
	line-height: 1.9;
	color: var(--text-dim);
}

/* ---------- 产品服务 ---------- */

.section-products {
	padding-top: 72px;
}

.section-products > .section-head {
	margin-bottom: 8px;
}

.prow {
	padding: 56px 0;
}

.prow:nth-child(even) {
	background: rgba(255, 255, 255, 0.03);
}

.prow-inner {
	display: flex;
	align-items: center;
	gap: 64px;
}

.prow:nth-child(odd) .prow-inner {
	flex-direction: row-reverse;
}

.prow-copy {
	flex: 1;
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.prow-copy h3 {
	font-size: 26px;
	letter-spacing: 2px;
}

.prow-copy p {
	max-width: 420px;
	font-size: 15px;
	line-height: 2;
	color: var(--text-dim);
}

.prow-img {
	flex: none;
	width: 46%;
	max-width: 560px;
}

.prow-img img {
	display: block;
	width: 100%;
	max-height: 460px;
	object-fit: contain;
	border-radius: 14px;
}

/* ---------- 联系我们 ---------- */

.contact-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 24px;
}

.contact-card {
	display: flex;
	flex-direction: column;
	gap: 14px;
	padding: 28px 26px;
	border-radius: 16px;
	border: 1px solid var(--panel-line);
	background: var(--panel);
}

.contact-city {
	font-size: 19px;
	font-weight: 600;
	letter-spacing: 1px;
	display: flex;
	align-items: center;
	gap: 10px;
}

.tag {
	padding: 2px 10px;
	font-size: 11.5px;
	font-weight: 400;
	border-radius: 999px;
	color: var(--orange);
	border: 1px solid rgba(255, 89, 0, 0.5);
	background: rgba(255, 89, 0, 0.1);
}

.contact-line {
	display: flex;
	gap: 12px;
	font-size: 14px;
	line-height: 1.7;
	color: var(--text-dim);
	word-break: break-all;
}

.contact-line span {
	flex: none;
	color: var(--text-faint);
}

/* ---------- 页脚 ---------- */

.footer {
	margin-top: 72px;
	background: #151c2b;
	border-top: 1px solid rgba(255, 255, 255, 0.08);
	padding: 48px 0 28px;
}

.footer-top {
	display: flex;
	justify-content: space-between;
	gap: 40px;
	flex-wrap: wrap;
}

.footer-brand {
	display: flex;
	flex-direction: column;
	gap: 16px;
}

.footer-logo {
	height: 36px;
	align-self: flex-start;
}

.footer-company {
	font-size: 15px;
	letter-spacing: 1px;
}

.footer-nav {
	display: flex;
	flex-wrap: wrap;
	gap: 24px;
	font-size: 13.5px;
	margin-top: 6px;
}

.footer-nav a {
	color: var(--text-dim);
}

.footer-nav a:hover {
	color: var(--text);
}

.footer-download {
	display: flex;
	flex-direction: column;
	gap: 6px;
	align-items: flex-start;
}

.footer-dl-title {
	font-size: 15px;
	letter-spacing: 1px;
}

.footer-dl-en {
	font-size: 12px;
	color: var(--text-faint);
}

.qr-box {
	margin-top: 10px;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 8px;
	font-size: 12.5px;
	color: var(--text-dim);
}

.qr-box img {
	display: block;
	width: 110px;
	height: 110px;
	padding: 6px;
	background: #ffffff;
	border-radius: 8px;
}

.footer-bottom {
	margin-top: 40px;
	border-top: 1px solid rgba(255, 255, 255, 0.08);
	padding-top: 20px;
	text-align: center;
	font-size: 12.5px;
	color: var(--text-faint);
}

.footer-bottom a {
	color: var(--text-faint);
}

.footer-bottom a:hover {
	color: var(--text-dim);
}

/* ---------- 响应式 ---------- */

@media (max-width: 1024px) {
	.container {
		padding: 0 24px;
	}

	.nav {
		padding: 0 24px;
	}

	.hero h1 {
		font-size: 42px;
	}

	.prow-inner {
		gap: 36px;
	}
}

@media (max-width: 900px) {
	.nav-links {
		display: none;
	}

	.hero {
		min-height: 440px;
	}

	.hero h1 {
		font-size: 32px;
		letter-spacing: 2px;
	}

	.hero-en {
		font-size: 14px;
	}

	.sol-card {
		flex-direction: column;
		padding: 32px 24px;
		gap: 28px;
	}

	.sol-shot {
		width: 100%;
		max-width: 460px;
	}

	.svc-grid,
	.contact-grid {
		grid-template-columns: 1fr;
	}

	.svc-card img {
		height: 200px;
	}

	.prow {
		padding: 40px 0;
	}

	.prow-inner,
	.prow:nth-child(odd) .prow-inner {
		flex-direction: column;
		align-items: stretch;
		gap: 22px;
	}

	.prow-img {
		width: 100%;
		max-width: none;
		order: -1;
	}

	.prow-copy p {
		max-width: none;
	}

	.section {
		padding: 52px 0 8px;
	}

	.section-head h2 {
		font-size: 25px;
	}

	.footer-top {
		flex-direction: column;
	}
}

@media (max-width: 560px) {
	.container {
		padding: 0 18px;
	}

	.nav {
		padding: 0 18px;
		height: 56px;
	}

	.brand-logo {
		height: 26px;
	}

	.hero h1 {
		font-size: 27px;
	}

	.btn-row {
		width: 100%;
		flex-direction: column;
	}

	.btn-row .btn {
		width: 100%;
	}

	.prow-copy h3 {
		font-size: 21px;
	}
}