/* 华瑞智德 - 精细优化版 */

* {
	margin: 0;
	padding: 0;
	box-sizing: border-box;
}

:root {
	--primary-color: #000;
	--accent-color: #0066ff;
	--text-gray: #666;
	--border-color: #e5e5e5;
	--transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
	font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
	background: #fff;
	color: #000;
	overflow-x: hidden;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

::selection {
	background: #000;
	color: #fff;
}

/* 导航 - 精细优化 */
.nav {
	position: fixed;
	top: 0;
	left: 0;
	right: 0;
	z-index: 1000;
	display: flex;
	justify-content: space-between;
	align-items: center;
	padding: 35px 80px;
	background: transparent;
	transition: var(--transition);
}

.nav::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: rgba(255,255,255,0.95);
	backdrop-filter: blur(30px) saturate(180%);
	opacity: 0;
	transition: var(--transition);
	box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}

.nav.scrolled::before {
	opacity: 1;
}

.nav.scrolled {
	padding: 25px 80px;
}

.nav-logo {
	font-size: 26px;
	font-weight: 900;
	letter-spacing: 4px;
	position: relative;
	z-index: 1;
	color: #fff;
	transition: var(--transition);
}

.nav-logo-img {
	height: 60px;
	width: auto;
	display: block;
	transition: var(--transition);
}

.nav.scrolled .nav-logo-img {
	height: 50px;
}

.nav.scrolled .nav-logo {
	color: #000;
}

.nav-links {
	display: flex;
	gap: 60px;
	align-items: center;
	position: relative;
	z-index: 1;
}

.nav-links a {
	color: #fff;
	text-decoration: none;
	font-size: 15px;
	font-weight: 500;
	transition: var(--transition);
	position: relative;
	padding: 5px 0;
}

.nav.scrolled .nav-links a {
	color: #000;
}

.nav-links a::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	width: 0;
	height: 2px;
	background: currentColor;
	transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-links a:hover::after {
	width: 100%;
}

.nav-btn {
	background: #fff !important;
	color: #000 !important;
	padding: 12px 30px !important;
	border-radius: 30px !important;
	border: 2px solid #fff !important;
	transition: var(--transition) !important;
}

.nav.scrolled .nav-btn {
	background: #000 !important;
	color: #fff !important;
	border-color: #000 !important;
}

.nav-btn:hover {
	transform: translateY(-2px) !important;
	box-shadow: 0 10px 30px rgba(0,0,0,0.15) !important;
}

/* 固定样式导航栏 - 用于产品详情和联系页面 */
.nav.nav-fixed-style {
	padding: 25px 80px;
}

.nav.nav-fixed-style::before {
	opacity: 1;
}

.nav.nav-fixed-style .nav-logo {
	color: #000;
}

.nav.nav-fixed-style .nav-links a {
	color: #000;
}

.nav.nav-fixed-style .nav-btn {
	background: #000 !important;
	color: #fff !important;
	border-color: #000 !important;
}

.nav-burger {
	display: none;
	flex-direction: column;
	gap: 6px;
	cursor: pointer;
	position: relative;
	z-index: 1;
}

.nav-burger span {
	width: 28px;
	height: 2px;
	background: #fff;
	transition: var(--transition);
	border-radius: 2px;
}

.nav.scrolled .nav-burger span {
	background: #000;
}

/* Hero - 全屏视频/图片优化 */
.hero-full {
	position: relative;
	height: 100vh;
	min-height: 600px;
	display: flex;
	align-items: center;
	justify-content: center;
	overflow: hidden;
}

.hero-video {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	z-index: 0;
}

.hero-video video {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transform: scale(1.05);
}

.hero-video img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	object-position: center;
}

.hero-overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: linear-gradient(135deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.2) 100%);
	z-index: 1;
}

.hero-text {
	position: relative;
	z-index: 2;
	text-align: center;
	animation: fadeUp 1.2s cubic-bezier(0.4, 0, 0.2, 1);
	max-width: 1200px;
	padding: 0 40px;
}

.hero-text h1 {
	font-size: clamp(48px, 9vw, 120px);
	font-weight: 900;
	line-height: 1.1;
	margin-bottom: 35px;
	letter-spacing: -2px;
	color: #fff;
	text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.hero-text p {
	font-size: clamp(16px, 2vw, 20px);
	margin-bottom: 60px;
	opacity: 0.95;
	letter-spacing: 4px;
	font-weight: 400;
	color: #fff;
	text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.hero-cta {
	display: inline-block;
	padding: 22px 55px;
	background: #fff;
	color: #000;
	text-decoration: none;
	font-size: 16px;
	font-weight: 700;
	border-radius: 50px;
	transition: var(--transition);
	letter-spacing: 2px;
	border: 2px solid #fff;
	position: relative;
	overflow: hidden;
}

.hero-cta::before {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 0;
	height: 0;
	background: #000;
	border-radius: 50%;
	transform: translate(-50%, -50%);
	transition: width 0.6s, height 0.6s;
	z-index: -1;
}

.hero-cta:hover::before {
	width: 300px;
	height: 300px;
}

.hero-cta:hover {
	color: #fff;
	transform: translateY(-3px);
	box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.scroll-down {
	position: absolute;
	bottom: 60px;
	left: 50%;
	transform: translateX(-50%);
	z-index: 2;
	text-align: center;
	font-size: 11px;
	letter-spacing: 4px;
	color: #fff;
	opacity: 0.8;
}

.scroll-down .line {
	width: 2px;
	height: 70px;
	background: linear-gradient(to bottom, #fff, transparent);
	margin: 20px auto 0;
	animation: scrollAnim 2.5s ease-in-out infinite;
	border-radius: 2px;
}

@keyframes fadeUp {
	from { 
		opacity: 0; 
		transform: translateY(60px);
	}
	to { 
		opacity: 1; 
		transform: translateY(0);
	}
}

@keyframes scrollAnim {
	0%, 100% { 
		transform: scaleY(1) translateY(0); 
		opacity: 1; 
	}
	50% { 
		transform: scaleY(0.6) translateY(10px); 
		opacity: 0.4; 
	}
}

/* 数据 - 精细网格 */
.stats-black {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	background: #000;
	position: relative;
}

.stats-black::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.stats-black::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.stat-box {
	padding: 100px 40px;
	text-align: center;
	border-right: 1px solid rgba(255,255,255,0.08);
	position: relative;
	transition: var(--transition);
}

.stat-box:last-child {
	border-right: none;
}

.stat-box::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: radial-gradient(circle at center, rgba(255,255,255,0.03), transparent);
	opacity: 0;
	transition: var(--transition);
}

.stat-box:hover::before {
	opacity: 1;
}

.stat-num {
	font-size: 96px;
	font-weight: 900;
	line-height: 1;
	margin-bottom: 20px;
	color: #fff;
	background: linear-gradient(135deg, #fff 0%, rgba(255,255,255,0.7) 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.stat-num::after {
	content: '+';
	color: #fff;
	-webkit-text-fill-color: #fff;
}

.stat-text {
	font-size: 13px;
	letter-spacing: 3px;
	opacity: 0.6;
	text-transform: uppercase;
	color: #fff;
	font-weight: 500;
}

/* 产品展示 - 精细优化 */
.products-showcase {
	background: #fff;
	color: #000;
}

.product-slide {
	display: grid;
	grid-template-columns: 1fr 1fr;
	min-height: 100vh;
	align-items: center;
	position: relative;
}

.product-slide::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.product-slide.reverse {
	direction: rtl;
}

.product-slide.reverse > * {
	direction: ltr;
}

.product-img {
	height: 100vh;
	overflow: hidden;
	position: relative;
	background: #f5f5f5;
	display: flex;
	align-items: center;
	justify-content: center;
}

.product-img::after {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: linear-gradient(135deg, rgba(0,0,0,0.05), transparent);
	opacity: 0;
	transition: var(--transition);
}

.product-slide:hover .product-img::after {
	opacity: 1;
}

.product-img img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	transition: transform 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-slide:hover .product-img img {
	transform: scale(1.05);
}

.product-info {
	padding: 120px;
	position: relative;
}

.product-tag {
	display: inline-block;
	font-size: 11px;
	letter-spacing: 3px;
	text-transform: uppercase;
	color: var(--text-gray);
	margin-bottom: 35px;
	padding: 8px 20px;
	border: 1px solid var(--border-color);
	border-radius: 20px;
	font-weight: 600;
	transition: var(--transition);
}

.product-slide:hover .product-tag {
	border-color: #000;
	color: #000;
}

.product-info h2 {
	font-size: clamp(40px, 5vw, 68px);
	font-weight: 900;
	line-height: 1.15;
	margin-bottom: 35px;
	letter-spacing: -1px;
}

.product-info p {
	font-size: 17px;
	line-height: 1.9;
	color: var(--text-gray);
	margin-bottom: 50px;
	max-width: 500px;
}

.product-link {
	color: #000;
	text-decoration: none;
	font-size: 16px;
	font-weight: 700;
	letter-spacing: 1px;
	transition: var(--transition);
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding: 15px 35px;
	border: 2px solid #000;
	border-radius: 30px;
	position: relative;
	overflow: hidden;
}

.product-link::before {
	content: '';
	position: absolute;
	top: 0;
	left: -100%;
	width: 100%;
	height: 100%;
	background: #000;
	transition: left 0.5s cubic-bezier(0.4, 0, 0.2, 1);
	z-index: -1;
}

.product-link:hover::before {
	left: 0;
}

.product-link:hover {
	color: #fff;
	transform: translateY(-2px);
	box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

/* 技术实力 - 精细优化 */
.tech-power {
	background: #000;
	padding: 180px 0;
	position: relative;
	overflow: hidden;
}

.tech-power::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: radial-gradient(circle at 30% 50%, rgba(0,102,255,0.05), transparent 50%);
	pointer-events: none;
}

.tech-content {
	max-width: 1600px;
	margin: 0 auto;
	padding: 0 80px;
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 120px;
	align-items: center;
	position: relative;
	z-index: 1;
}

.section-label {
	display: inline-block;
	font-size: 11px;
	letter-spacing: 4px;
	text-transform: uppercase;
	opacity: 0.6;
	margin-bottom: 35px;
	padding: 8px 20px;
	border: 1px solid rgba(255,255,255,0.2);
	border-radius: 20px;
	color: #fff;
	font-weight: 600;
}

.tech-left h2 {
	font-size: clamp(40px, 5vw, 68px);
	font-weight: 900;
	line-height: 1.15;
	margin-bottom: 70px;
	color: #fff;
	letter-spacing: -1px;
}

.tech-item {
	margin-bottom: 60px;
	padding-bottom: 60px;
	border-bottom: 1px solid rgba(255,255,255,0.08);
	transition: var(--transition);
	padding-left: 30px;
	position: relative;
}

.tech-item::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0;
	width: 3px;
	height: 0;
	background: linear-gradient(to bottom, #0066ff, transparent);
	transition: height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.tech-item:hover::before {
	height: 100%;
}

.tech-item:last-child {
	border-bottom: none;
	margin-bottom: 0;
	padding-bottom: 0;
}

.tech-item h3 {
	font-size: 15px;
	letter-spacing: 3px;
	margin-bottom: 18px;
	opacity: 0.6;
	color: #fff;
	font-weight: 600;
	transition: var(--transition);
}

.tech-item:hover h3 {
	opacity: 1;
	color: #0066ff;
}

.tech-item p {
	font-size: 18px;
	line-height: 1.8;
	color: rgba(255,255,255,0.7);
	transition: var(--transition);
}

.tech-item:hover p {
	color: rgba(255,255,255,0.95);
}

.tech-right {
	position: relative;
}

.tech-right::before {
	content: '';
	position: absolute;
	top: -40px;
	left: -40px;
	right: 40px;
	bottom: 40px;
	border: 1px solid rgba(255,255,255,0.1);
	border-radius: 20px;
	pointer-events: none;
}

.tech-right img {
	width: 100%;
	height: auto;
	border-radius: 20px;
	box-shadow: 0 30px 80px rgba(0,0,0,0.5);
	transition: var(--transition);
}

.tech-right:hover img {
	transform: translateY(-10px);
	box-shadow: 0 40px 100px rgba(0,0,0,0.6);
}

/* 院士介绍 - 精细优化 */
.founder-hero {
	display: grid;
	grid-template-columns: 1fr 1fr;
	min-height: 100vh;
	background: #fafafa;
	color: #000;
	position: relative;
}

.founder-hero::before {
	content: '';
	position: absolute;
	top: 0;
	left: 50%;
	width: 1px;
	height: 100%;
	background: linear-gradient(to bottom, transparent, var(--border-color), transparent);
}

.founder-img {
	height: 100vh;
	position: sticky;
	top: 0;
	overflow: hidden;
}

.founder-img::after {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: linear-gradient(135deg, rgba(0,0,0,0.03), transparent);
}

.founder-img img {
	width: 100%;
	height: 100%;
	object-fit: contain;
	filter: grayscale(20%);
	transition: var(--transition);
	background: #f5f5f5;
}

.founder-hero:hover .founder-img img {
	filter: grayscale(0%);
	transform: scale(1.02);
}

.founder-content {
	padding: 180px 120px;
	position: relative;
}

.founder-content .section-label {
	color: var(--text-gray);
	border-color: var(--border-color);
}

.founder-content h2 {
	font-size: clamp(40px, 5vw, 58px);
	font-weight: 900;
	margin-bottom: 25px;
	letter-spacing: -1px;
}

.founder-title {
	font-size: 18px;
	color: var(--text-gray);
	margin-bottom: 50px;
	line-height: 1.6;
	font-weight: 500;
}

.founder-desc {
	font-size: 16px;
	line-height: 2;
	color: #333;
	margin-bottom: 70px;
	position: relative;
	padding-left: 30px;
}

.founder-desc::before {
	content: '';
	position: absolute;
	left: 0;
	top: 0;
	width: 4px;
	height: 100%;
	background: linear-gradient(to bottom, #000, transparent);
	border-radius: 2px;
}

.founder-stats {
	display: flex;
	gap: 70px;
	margin-bottom: 70px;
	padding-bottom: 70px;
	border-bottom: 1px solid var(--border-color);
}

.founder-stat {
	position: relative;
}

.founder-stat::before {
	content: '';
	position: absolute;
	top: -10px;
	left: -10px;
	right: -10px;
	bottom: -10px;
	background: linear-gradient(135deg, rgba(0,102,255,0.05), transparent);
	border-radius: 10px;
	opacity: 0;
	transition: var(--transition);
}

.founder-stat:hover::before {
	opacity: 1;
}

.founder-stat strong {
	display: block;
	font-size: 52px;
	font-weight: 900;
	margin-bottom: 12px;
	position: relative;
	background: linear-gradient(135deg, #000 0%, #333 100%);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
}

.founder-stat span {
	font-size: 13px;
	color: var(--text-gray);
	letter-spacing: 1px;
	font-weight: 500;
	position: relative;
}

.founder-roles {
	position: relative;
}

.founder-roles p {
	font-size: 15px;
	line-height: 2.2;
	color: #333;
	padding-left: 30px;
	position: relative;
	transition: var(--transition);
}

.founder-roles p::before {
	content: '';
	position: absolute;
	left: 0;
	top: 50%;
	transform: translateY(-50%);
	width: 12px;
	height: 2px;
	background: #000;
	transition: var(--transition);
}

.founder-roles p:hover {
	color: #0066ff;
	padding-left: 35px;
}

.founder-roles p:hover::before {
	width: 18px;
	background: #0066ff;
}

/* 应用场景 - 精细优化 */
.applications-split {
	display: grid;
	grid-template-columns: 1fr 1fr;
	position: relative;
}

.applications-split::before {
	content: '';
	position: absolute;
	top: 0;
	left: 50%;
	width: 2px;
	height: 100%;
	background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.3), transparent);
	z-index: 1;
}

.app-half {
	height: 80vh;
	background-size: cover;
	background-position: center;
	position: relative;
	overflow: hidden;
}

.app-half::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: linear-gradient(135deg, rgba(0,0,0,0.3), rgba(0,0,0,0.6));
	transition: var(--transition);
}

.app-overlay {
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, transparent 60%);
	display: flex;
	align-items: flex-end;
	padding: 80px;
	transition: var(--transition);
	z-index: 1;
}

.app-half:hover .app-overlay {
	background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.4) 60%);
}

.app-half:hover::before {
	background: linear-gradient(135deg, rgba(0,0,0,0.2), rgba(0,0,0,0.5));
}

.app-text {
	transform: translateY(0);
	transition: var(--transition);
}

.app-half:hover .app-text {
	transform: translateY(-10px);
}

.app-text h3 {
	font-size: 52px;
	font-weight: 900;
	margin-bottom: 20px;
	color: #fff;
	letter-spacing: -1px;
}

.app-text p {
	font-size: 17px;
	margin-bottom: 30px;
	opacity: 0.95;
	line-height: 1.8;
	color: #fff;
}

.app-text a {
	color: #fff;
	text-decoration: none;
	font-size: 16px;
	font-weight: 700;
	letter-spacing: 1px;
	transition: var(--transition);
	display: inline-flex;
	align-items: center;
	gap: 10px;
	padding: 12px 30px;
	border: 2px solid #fff;
	border-radius: 30px;
}

.app-text a:hover {
	background: #fff;
	color: #000;
	transform: translateX(5px);
}

/* 合作伙伴 - 精细优化 */
.partners-minimal {
	background: #000;
	padding: 180px 80px;
	text-align: center;
	position: relative;
	overflow: hidden;
}

.partners-minimal::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	background: radial-gradient(circle at 70% 50%, rgba(0,102,255,0.03), transparent 50%);
	pointer-events: none;
}

.partners-minimal h3 {
	font-size: 14px;
	letter-spacing: 4px;
	text-transform: uppercase;
	opacity: 0.6;
	margin-bottom: 100px;
	color: #fff;
	font-weight: 600;
	position: relative;
}

.partners-minimal h3::after {
	content: '';
	position: absolute;
	bottom: -30px;
	left: 50%;
	transform: translateX(-50%);
	width: 60px;
	height: 2px;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

.partner-logos {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	align-items: center;
	gap: 120px;
	position: relative;
	z-index: 1;
}

/* 合作伙伴项容器 */
.partner-item {
	position: relative;
	display: flex;
	flex-direction: column;
	align-items: center;
	gap: 15px;
	transition: var(--transition);
}

.partner-item img {
	height: 40px;
	filter: brightness(1) opacity(0.9);
	transition: var(--transition);
}

/* 公司名字默认隐藏 */
.partner-name {
	position: absolute;
	bottom: -35px;
	left: 50%;
	transform: translateX(-50%);
	color: #fff;
	font-size: 14px;
	font-weight: 500;
	white-space: nowrap;
	opacity: 0;
	transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	pointer-events: none;
	letter-spacing: 0.5px;
}

/* 悬浮效果 */
.partner-item:hover img {
	filter: brightness(1.1) opacity(1);
	transform: scale(1.15) translateY(-5px);
}

.partner-item:hover .partner-name {
	opacity: 1;
	transform: translateX(-50%) translateY(0);
}


/* CTA - 精细优化 */
.cta-full {
	background: #000;
	padding: 220px 80px;
	text-align: center;
	position: relative;
	overflow: hidden;
}

.cta-full::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.cta-full::after {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	transform: translate(-50%, -50%);
	width: 600px;
	height: 600px;
	background: radial-gradient(circle, rgba(0,102,255,0.08), transparent 70%);
	pointer-events: none;
}

.cta-full h2 {
	font-size: clamp(40px, 6vw, 76px);
	font-weight: 900;
	margin-bottom: 35px;
	color: #fff;
	letter-spacing: -1px;
	position: relative;
	z-index: 1;
}

.cta-full p {
	font-size: 19px;
	margin-bottom: 60px;
	opacity: 0.8;
	color: #fff;
	letter-spacing: 1px;
	position: relative;
	z-index: 1;
}

.cta-button {
	display: inline-block;
	padding: 22px 65px;
	background: #fff;
	color: #000;
	text-decoration: none;
	font-size: 16px;
	font-weight: 700;
	border-radius: 50px;
	transition: var(--transition);
	letter-spacing: 2px;
	border: 2px solid #fff;
	position: relative;
	z-index: 1;
	overflow: hidden;
}

.cta-button::before {
	content: '';
	position: absolute;
	top: 50%;
	left: 50%;
	width: 0;
	height: 0;
	background: #0066ff;
	border-radius: 50%;
	transform: translate(-50%, -50%);
	transition: width 0.6s, height 0.6s;
	z-index: -1;
}

.cta-button:hover::before {
	width: 400px;
	height: 400px;
}

.cta-button:hover {
	color: #fff;
	border-color: #0066ff;
	transform: translateY(-3px);
	box-shadow: 0 20px 60px rgba(0,102,255,0.4);
}

/* 页脚 - 精细优化 */
.footer-minimal {
	background: #000;
	padding: 120px 80px 50px;
	position: relative;
}

.footer-minimal::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
}

.footer-content {
	max-width: 1600px;
	margin: 0 auto;
	display: flex;
	justify-content: space-between;
	margin-bottom: 100px;
}

.footer-logo {
	font-size: 26px;
	font-weight: 900;
	letter-spacing: 4px;
	margin-bottom: 25px;
	color: #fff;
}

.footer-left p {
	font-size: 14px;
	color: rgba(255,255,255,0.5);
	line-height: 1.8;
}

.footer-links {
	display: flex;
	gap: 120px;
}

.footer-col h4 {
	font-size: 13px;
	letter-spacing: 3px;
	text-transform: uppercase;
	margin-bottom: 30px;
	opacity: 0.6;
	color: #fff;
	font-weight: 600;
}

.footer-col a,
.footer-col p {
	display: block;
	color: rgba(255,255,255,0.5);
	text-decoration: none;
	font-size: 14px;
	margin-bottom: 15px;
	transition: var(--transition);
	line-height: 1.6;
}

.footer-col a:hover {
	color: #fff;
	padding-left: 5px;
}

.footer-bottom {
	text-align: center;
	padding-top: 50px;
	border-top: 1px solid rgba(255,255,255,0.08);
	font-size: 13px;
	color: rgba(255,255,255,0.4);
}

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

.footer-bottom a:hover {
	color: rgba(255,255,255,0.8);
}

/* 返回顶部 - 精细优化 */
.back-top {
	position: fixed;
	bottom: 50px;
	right: 50px;
	width: 56px;
	height: 56px;
	background: #000;
	color: #fff;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	font-size: 22px;
	font-weight: 700;
	cursor: pointer;
	opacity: 0;
	visibility: hidden;
	transition: var(--transition);
	z-index: 999;
	border: 2px solid #000;
	box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.back-top::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
	border-radius: 50%;
	background: #fff;
	transform: scale(0);
	transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
	z-index: -1;
}

.back-top:hover::before {
	transform: scale(1);
}

.back-top:hover {
	color: #000;
	transform: translateY(-5px);
	box-shadow: 0 15px 40px rgba(0,0,0,0.3);
}

.back-top.show {
	opacity: 1;
	visibility: visible;
}

/* 响应式 */
@media (max-width: 1024px) {
	.nav { padding: 20px 30px; }
	.stats-black { grid-template-columns: repeat(2, 1fr); }
	.product-slide,
	.tech-content,
	.founder-hero { grid-template-columns: 1fr; }
	.product-info,
	.founder-content { padding: 60px 40px; }
	.applications-split { grid-template-columns: 1fr; }
	.footer-links { flex-direction: column; gap: 40px; }
}

@media (max-width: 768px) {
	.nav-links { display: none; }
	.nav-burger { display: flex; }
	.stats-black { grid-template-columns: 1fr; }
	.stat-box { padding: 40px 20px; }
	.product-img,
	.founder-img { height: 50vh; position: relative; }
	.partner-logos { gap: 40px; }
	
	/* 移动端合作伙伴样式调整 */
	.partner-item img {
		height: 35px;
	}
	
	.partner-name {
		font-size: 12px;
		bottom: -30px;
	}
	
	/* 移动端默认显示公司名字（可选） */
	.partner-name {
		opacity: 0.7;
	}
	
	.partner-item:hover .partner-name {
		opacity: 1;
	}
}

/* ===== 导航用户区域 ===== */
.nav-user {
	display: flex;
	align-items: center;
	gap: 12px;
	position: relative;
	z-index: 1;
}
.nav-login-btn,
.nav-register-btn {
	color: #fff;
	text-decoration: none;
	font-size: 14px;
	font-weight: 500;
	transition: opacity 0.3s;
}
.nav.scrolled .nav-login-btn,
.nav.scrolled .nav-register-btn {
	color: #000;
}
.nav-register-btn {
	background: #fff;
	color: #000 !important;
	padding: 8px 22px;
	border-radius: 30px;
	border: 2px solid #fff;
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav.scrolled .nav-register-btn {
	background: #000;
	color: #fff !important;
	border-color: #000;
}
.nav-register-btn:hover {
	transform: translateY(-2px);
	box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* 头像区域 */
.nav-avatar-wrap {
	position: relative;
	cursor: pointer;
}
.nav-avatar {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	object-fit: cover;
	border: 2px solid rgba(255,255,255,0.3);
	transition: all 0.3s;
}
.nav.scrolled .nav-avatar {
	border-color: #e5e5e5;
}
.nav-avatar-wrap:hover .nav-avatar {
	border-color: #0066ff;
}

/* 头像下拉菜单 */
.nav-avatar-dropdown {
	position: absolute;
	top: calc(100% + 12px);
	right: 0;
	min-width: 140px;
	background: #fff;
	border-radius: 12px;
	box-shadow: 0 12px 40px rgba(0,0,0,0.12);
	overflow: hidden;
	opacity: 0;
	visibility: hidden;
	transform: translateY(-8px);
	transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.nav-avatar-wrap:hover .nav-avatar-dropdown {
	opacity: 1;
	visibility: visible;
	transform: translateY(0);
}
.nav-avatar-dropdown a {
	display: block;
	padding: 12px 20px;
	font-size: 14px;
	color: #333;
	text-decoration: none;
	transition: background 0.2s;
}
.nav-avatar-dropdown a:hover {
	background: #f5f5f5;
}
.nav-avatar-dropdown a + a {
	border-top: 1px solid #f0f0f0;
}

/* 会员头像框 */
.nav-avatar-wrap.member-frame .nav-avatar {
	border: 2px solid transparent;
	background-image: linear-gradient(#fff, #fff), linear-gradient(135deg, #f5af19, #f12711);
	background-origin: border-box;
	background-clip: content-box, border-box;
	box-shadow: 0 0 8px rgba(245, 175, 25, 0.4);
}
.nav.scrolled .nav-avatar-wrap.member-frame .nav-avatar {
	border-color: transparent;
	background-image: linear-gradient(#fff, #fff), linear-gradient(135deg, #f5af19, #f12711);
	background-origin: border-box;
	background-clip: content-box, border-box;
}
.nav-avatar-wrap.member-frame:hover .nav-avatar {
	box-shadow: 0 0 12px rgba(245, 175, 25, 0.6);
}