/* 现代化设计系统 - 2025升级版 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 高端品牌色彩系统 - 参考农夫山泉/华为/小米风格 */
    --primary-gold: #d4af37;
    --primary-dark: #1a1a1a;
    --primary-light: #f8f8f8;
    --accent-red: #e60012;
    --accent-blue: #0066cc;
    --accent-silver: #c0c0c0;
    --accent-white: #ffffff;
    
    /* 高级灰度系统 */
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    
    /* 品牌渐变 - 高级感 */
    --gold-gradient: linear-gradient(135deg, #d4af37 0%, #f9e076 50%, #d4af37 100%);
    --dark-gradient: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    --silver-gradient: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);
    --red-gradient: linear-gradient(135deg, #e60012 0%, #ff3333 100%);
    
    /* 渐变色彩 */
    --primary-gradient: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-purple) 100%);
    --secondary-gradient: linear-gradient(135deg, var(--secondary-orange) 0%, var(--primary-blue) 100%);
    --dark-gradient: linear-gradient(135deg, var(--neutral-900) 0%, var(--neutral-700) 100%);
    --light-gradient: linear-gradient(135deg, var(--neutral-50) 0%, var(--neutral-100) 100%);
    
    /* 阴影系统 - 现代柔和阴影 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* 字体系统 */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* 字重 */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* 间距系统 */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* 圆角系统 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* 过渡动画 */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--neutral-700);
    background: var(--neutral-50);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* 现代化导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1000;
    padding: var(--space-3) 0;
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--neutral-200);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-blue);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-2xl);
    letter-spacing: -0.025em;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav-menu a {
    text-decoration: none;
    color: var(--neutral-600);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--space-2) 0;
}

.nav-menu a:hover {
    color: var(--primary-blue);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: width var(--transition-normal);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-2);
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--neutral-700);
    margin: 3px 0;
    transition: all var(--transition-normal);
    border-radius: 1px;
}

/* 现代玻璃态导航栏 - 优化对比度 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    padding: var(--space-3) 0;
    transition: all var(--transition-normal);
    border-bottom: 1px solid var(--gray-200);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--gray-900);
    font-family: 'Ma Shan Zheng', cursive;
    font-weight: 400;
    font-size: 2.2rem;
    letter-spacing: 0.1em;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
    position: relative;
}

.nav-logo h2::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gold-gradient);
    border-radius: 1px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-8);
}

.nav-menu a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    position: relative;
    padding: var(--space-2) 0;
}

.nav-menu a:hover {
    color: var(--gray-900);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.3);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--primary-gradient);
    transition: all var(--transition-normal);
    transform: translateX(-50%);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--space-2);
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--neutral-50);
    margin: 3px 0;
    transition: all var(--transition-normal);
    border-radius: 1px;
}

/* 精美图片轮播背景 - 高端品牌风格 */
.hero {
    height: 100vh;
    min-height: 800px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
}

/* 图片轮播容器 */
.hero-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

/* 轮播图片样式 - 模拟精美商业图片 */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide-1 {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(230, 0, 18, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, rgba(26, 26, 26, 0.8) 0%, rgba(45, 45, 45, 0.6) 100%);
}

.slide-2 {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
    background-image: 
        radial-gradient(circle at 30% 20%, rgba(0, 102, 204, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        linear-gradient(180deg, rgba(44, 62, 80, 0.8) 0%, rgba(52, 73, 94, 0.6) 100%);
}

.slide-3 {
    background: linear-gradient(135deg, #8b4513 0%, #a0522d 100%);
    background-image: 
        radial-gradient(circle at 25% 75%, rgba(212, 175, 55, 0.12) 0%, transparent 50%),
        radial-gradient(circle at 75% 25%, rgba(139, 69, 19, 0.1) 0%, transparent 50%),
        linear-gradient(180deg, rgba(139, 69, 19, 0.8) 0%, rgba(160, 82, 45, 0.6) 100%);
}

.slide-4 {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    background-image: 
        radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 60% 60%, rgba(212, 175, 55, 0.06) 0%, transparent 50%),
        linear-gradient(180deg, rgba(30, 58, 138, 0.8) 0%, rgba(59, 130, 246, 0.6) 100%);
}

.slide.active {
    opacity: 1;
}

/* 轮播指示器 */
.slider-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 4;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(212, 175, 55, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: var(--gold-gradient);
    border-color: var(--primary-gold);
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(212, 175, 55, 0.6);
    transform: scale(1.1);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 0, 0, 0.2) 0%, rgba(0, 0, 0, 0.4) 100%);
    z-index: 2;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.3) 50%, transparent 100%);
    z-index: 3;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1000px;
    padding: 0 var(--space-8);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 300;
    margin-bottom: var(--space-6);
    color: var(--gray-900);
    letter-spacing: -0.02em;
    line-height: 1.1;
    position: relative;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    animation: heroTitleFade 1.2s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--space-10);
    color: var(--gray-600);
    font-weight: 400;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
    letter-spacing: 0.01em;
    animation: heroSubtitleFade 1.2s ease-out 0.4s both;
}

.cta-button {
    background: var(--gold-gradient);
    color: var(--gray-900);
    border: 2px solid transparent;
    padding: 1.25rem 3rem;
    font-size: 1.1rem;
    font-weight: 500;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    letter-spacing: 0.05em;
    min-width: 240px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(212, 175, 55, 0.3);
    animation: ctaFade 1.2s ease-out 0.8s both;
    text-transform: uppercase;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 40px rgba(212, 175, 55, 0.4);
    border-color: rgba(212, 175, 55, 0.3);
}

.cta-button:active {
    transform: translateY(0);
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.8s ease;
}

.cta-button:hover::before {
    left: 100%;
}

/* 高端品牌标识区域 */
.hero-brand {
    position: absolute;
    top: var(--space-8);
    left: var(--space-8);
    z-index: 3;
}

.hero-brand-logo {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--gray-700);
    letter-spacing: 0.1em;
}

.hero-brand-tagline {
    font-size: 0.75rem;
    color: var(--gray-500);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    margin-top: 0.25rem;
}

/* 装饰性元素 - 极简线条 */
.hero-decoration {
    position: absolute;
    z-index: 1;
}

.hero-line-v {
    width: 1px;
    height: 120px;
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.3) 0%, transparent 100%);
    top: 20%;
    right: 10%;
}

.hero-line-h {
    width: 200px;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.2) 50%, transparent 100%);
    bottom: 25%;
    left: 5%;
}

/* 极简几何装饰 */
.hero-geo {
    position: absolute;
    border: 1px solid rgba(212, 175, 55, 0.15);
    z-index: 1;
}

.hero-geo-1 {
    width: 60px;
    height: 60px;
    top: 15%;
    left: 15%;
    transform: rotate(45deg);
}

.hero-geo-2 {
    width: 40px;
    height: 40px;
    bottom: 20%;
    right: 20%;
    border-radius: 50%;
}

@keyframes heroTitleFade {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes heroSubtitleFade {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ctaFade {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 炫酷现代标题 */
.section-title {
    font-size: 4rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 5rem;
    color: var(--text-primary);
    position: relative;
    letter-spacing: -2px;
    line-height: 1.1;
    text-transform: uppercase;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    animation: titleShine 4s ease-in-out infinite;
}

@keyframes titleShine {
    0%, 100% { 
        filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3)) drop-shadow(0 0 20px var(--glow-color));
    }
    50% { 
        filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3)) drop-shadow(0 0 40px var(--glow-color));
    }
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--primary-gradient);
    border-radius: 2px;
    box-shadow: 0 0 20px var(--glow-color);
}

/* 高端品牌项目介绍 - 极简美学 */
.about-section {
    padding: 120px 0;
    background: linear-gradient(180deg, #fafafa 0%, #f5f5f5 100%);
    position: relative;
    overflow: hidden;
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.3) 50%, transparent 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: start;
    position: relative;
    z-index: 2;
}

.about-text {
    padding: 0;
    background: transparent;
    border-radius: 0;
    backdrop-filter: none;
    border: none;
    box-shadow: none;
}

.about-text h3 {
    font-size: 2.5rem;
    font-weight: 300;
    color: var(--gray-900);
    margin-bottom: 2rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
    text-align: left;
    position: relative;
}

.about-text h3::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--gold-gradient);
}

.about-text p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: var(--gray-700);
    line-height: 1.8;
    font-weight: 400;
    text-align: left;
}

/* 极简统计数据 */
.stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.stat-item {
    text-align: left;
}

.stat-item h3 {
    font-size: 2.5rem;
    color: var(--gray-900);
    font-weight: 300;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.stat-item p {
    color: var(--gray-600);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.about-image {
    position: relative;
    height: 500px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.3);
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.2) 0%, transparent 50%),
        radial-gradient(circle at 70% 70%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: imageGlow 4s ease-in-out infinite;
}

@keyframes imageGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.image-placeholder::after {
    content: '🏢';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 4rem;
    opacity: 0.3;
    animation: iconRotate 8s linear infinite;
}

@keyframes iconRotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 优化版科技展示区域 - 更紧凑的设计 */
.tech-showcase {
    background: transparent;
    padding: 2rem 0;
    border-radius: 0;
    margin: 2rem 0;
    backdrop-filter: none;
    border: none;
    box-shadow: none;
    position: relative;
}

.tech-showcase h4 {
    color: var(--gray-900);
    font-size: 1.5rem;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-align: left;
    justify-content: flex-start;
    text-shadow: none;
    letter-spacing: -0.01em;
    position: relative;
    font-weight: 300;
}

.tech-showcase h4::before {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 40px;
    height: 1px;
    background: var(--gold-gradient);
    border-radius: 1px;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tech-card {
    background: #ffffff;
    padding: 2rem;
    border-radius: 0;
    text-align: left;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tech-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border-color: rgba(212, 175, 55, 0.3);
}

.tech-card:hover::before {
    transform: scaleX(1);
}

.tech-icon {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--gray-700);
    display: block;
    line-height: 1;
    text-align: left;
}

.tech-card h5 {
    color: var(--gray-900);
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.3;
    text-align: left;
}

.tech-card p {
    color: var(--gray-600);
    line-height: 1.6;
    font-size: 0.9rem;
    font-weight: 400;
    text-align: left;
}

/* 工业遗产特色样式 */
.industrial-heritage {
    background: linear-gradient(135deg, #f5f5f5, #e8e8e8);
    padding: 2rem;
    border-radius: 15px;
    margin: 2rem 0;
    border-left: 5px solid #ff5722;
}

.industrial-heritage h4 {
    color: #2c3e50;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.heritage-features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.heritage-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.heritage-item:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateX(5px);
}

.heritage-icon {
    font-size: 2rem;
    min-width: 40px;
    text-align: center;
}

.heritage-item h5 {
    color: #34495e;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.heritage-item p {
    color: #7f8c8d;
    font-size: 0.95rem;
    margin: 0;
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-item h3 {
    font-size: 2rem;
    color: #d32f2f;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: #666;
    font-size: 0.9rem;
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.image-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #667eea, #764ba2);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

/* 高端品牌核心优势 - 极简网格布局 */
.features-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #ffffff 0%, #fafafa 100%);
    position: relative;
}

.features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.2) 50%, transparent 100%);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.feature-card {
    background: #ffffff;
    padding: 3rem 2.5rem;
    border-radius: 0;
    text-align: left;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border-color: rgba(212, 175, 55, 0.3);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--gray-700);
    display: block;
    line-height: 1;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--gray-900);
    font-weight: 500;
    letter-spacing: -0.01em;
    line-height: 1.3;
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.7;
    font-size: 0.95rem;
    font-weight: 400;
}

/* 数字装饰元素 */
.feature-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 0.75rem;
    color: var(--gray-400);
    font-weight: 300;
    letter-spacing: 0.1em;
}

/* 入驻品牌展示 - 优化版 */
.brands-section {
    padding: 100px 0;
    background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
    position: relative;
}

.brands-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, rgba(212, 175, 55, 0.2) 50%, transparent 100%);
}

.brands-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.brands-intro p {
    font-size: 1.1rem;
    color: var(--gray-600);
    font-weight: 400;
}

.brands-categories {
    display: flex;
    flex-direction: column;
    gap: 4rem;
}

.category-section {
    background: #ffffff;
    padding: 3rem;
    border-radius: 0;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.category-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gold-gradient);
}

.category-section h3 {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--gray-900);
    font-weight: 500;
    letter-spacing: -0.01em;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brand-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.brand-card {
    background: #ffffff;
    padding: 2rem;
    border-radius: 0;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
}

.brand-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gold-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.brand-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border-color: rgba(212, 175, 55, 0.3);
}

.brand-card:hover::before {
    transform: scaleX(1);
}

.brand-logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
}

.brand-logo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.brand-card:hover .brand-logo {
    border-color: rgba(212, 175, 55, 0.5);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.brand-card:hover .brand-logo img {
    transform: scale(1.05);
}

.brand-card h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--gray-900);
    font-weight: 600;
    letter-spacing: -0.01em;
    line-height: 1.3;
    text-align: center;
}

.brand-card p {
    color: var(--gray-600);
    line-height: 1.5;
    font-size: 0.9rem;
    font-weight: 400;
    text-align: center;
}

.brands-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
    padding-top: 3rem;
    border-top: 1px solid var(--gray-200);
}

.brands-stats .stat-item {
    text-align: center;
}

.brands-stats .stat-item h3 {
    font-size: 2.5rem;
    color: var(--gray-900);
    font-weight: 300;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.brands-stats .stat-item p {
    color: var(--gray-600);
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* 区位优势样式 */
.location-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.location-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.map-placeholder {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.location-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.location-list {
    list-style: none;
}

.location-list li {
    padding: 0.8rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: #666;
    font-size: 1.1rem;
}

.location-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #d32f2f;
    font-weight: bold;
}

/* 联系我们样式 */
.contact-section {
    padding: 100px 0;
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.contact-item p {
    color: #666;
    font-size: 1.1rem;
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-form input,
.contact-form textarea {
    padding: 1rem;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: #d32f2f;
}

.contact-form button {
    background: linear-gradient(45deg, #d32f2f, #ff6b6b);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.contact-form button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(211, 47, 47, 0.3);
}

/* 页脚样式 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #ecf0f1;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #ecf0f1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 现代化响应式设计 - 2025标准 */
@media (max-width: 1024px) {
    .nav-container {
        padding: 0 var(--space-4);
    }
    
    .nav-menu {
        gap: var(--space-6);
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .about-content,
    .location-content,
    .contact-content {
        gap: var(--space-8);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--neutral-900);
        width: 100%;
        text-align: center;
        transition: left var(--transition-normal);
        box-shadow: var(--shadow-lg);
        padding: var(--space-8) 0;
        height: calc(100vh - 70px);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu a {
        color: var(--neutral-300);
        font-size: var(--font-size-lg);
        padding: var(--space-4) 0;
        display: block;
    }

    .nav-menu a:hover {
        color: var(--neutral-50);
        background: rgba(255, 255, 255, 0.05);
    }

    .hamburger {
        display: flex;
    }

    .hero {
        height: 80vh;
        min-height: 600px;
    }

    .hero-title {
        font-size: var(--font-size-4xl);
        margin-bottom: var(--space-4);
    }

    .hero-subtitle {
        font-size: var(--font-size-lg);
        margin-bottom: var(--space-8);
    }

    .cta-button {
        padding: var(--space-4) var(--space-8);
        font-size: var(--font-size-base);
        min-width: 180px;
    }

    .section-title {
        font-size: var(--font-size-4xl);
        margin-bottom: var(--space-12);
    }

    .about-section,
    .features-section {
        padding: var(--space-20) 0;
    }

    .about-content,
    .location-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .tech-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .stats {
        flex-direction: column;
        gap: var(--space-4);
    }

    .contact-form form {
        gap: var(--space-4);
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 var(--space-3);
    }

    .hero-title {
        font-size: var(--font-size-3xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .section-title {
        font-size: var(--font-size-3xl);
    }

    .about-text,
    .tech-showcase {
        padding: var(--space-6);
    }

    .feature-card,
    .tech-card {
        padding: var(--space-6);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--space-6);
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --neutral-50: #0f172a;
        --neutral-100: #1e293b;
        --neutral-200: #334155;
        --neutral-300: #475569;
        --neutral-400: #64748b;
        --neutral-500: #94a3b8;
        --neutral-600: #cbd5e1;
        --neutral-700: #e2e8f0;
        --neutral-800: #f1f5f9;
        --neutral-900: #f8fafc;
    }
    
    body {
        background: var(--neutral-100);
        color: var(--neutral-700);
    }
}

/* 滚动效果 - 玻璃态 */
.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--neutral-200);
}

/* 加载动画 - 现代缓动 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 性能优化 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高对比度模式 */
@media (prefers-contrast: high) {
    :root {
        --primary-blue: #0052cc;
        --secondary-orange: #e55a2b;
        --accent-purple: #7c3aed;
    }
}

/* 打印样式 */
@media print {
    .navbar,
    .hamburger,
    .cta-button {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .section-title {
        font-size: 18pt;
        margin-bottom: 1rem;
    }
}