/* ===============================
   现代科技风格 - 希美森健康官网
   UI/UX Pro Max Design System
   =============================== */

/* 重置与基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 现代天蓝色科技色彩系统 - 基于logo色彩 #05aacb */
    --primary: #05aacb;
    --primary-light: #4fc3d9;
    --primary-lighter: #7dd4e3;
    --primary-dark: #04839a;
    --primary-deep: #036b7c;
    --primary-pale: #e8f7f9;
    --primary-gradient: linear-gradient(135deg, #05aacb 0%, #4fc3d9 50%, #7dd4e3 100%);
    --primary-light-gradient: linear-gradient(135deg, #7dd4e3 0%, #a8e1ed 100%);
    --primary-dark-gradient: linear-gradient(135deg, #04839a 0%, #05aacb 100%);
    --primary-cyber: linear-gradient(135deg, #05aacb 0%, #4fc3d9 50%, #7dd4e3 100%);
    
    /* 科技辅助色 */
    --cyber-blue: #1ABC9C;
    --tech-cyan: #48C9B0;
    --digital-teal: #16A085;
    --ocean-blue: #2E86AB;
    
    /* 现代中性色 */
    --white: #ffffff;
    --gray-25: #FDFDFD;
    --gray-50: #F8F9FA;
    --gray-100: #F1F3F4;
    --gray-200: #E8EAED;
    --gray-300: #DADCE0;
    --gray-400: #BDC1C6;
    --gray-500: #9AA0A6;
    --gray-600: #80868B;
    --gray-700: #5F6368;
    --gray-800: #3C4043;
    --gray-900: #202124;
    
    /* 语义色彩 - 科技风格 */
    --success: #27AE60;
    --warning: #F39C12;
    --error: #E74C3C;
    --info: #3498DB;
    
    /* 字体系统 */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;
    
    /* 现代阴影系统 - 天蓝色主题 */
    --shadow-sm: 0 1px 2px 0 rgba(5, 170, 203, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(5, 170, 203, 0.1), 0 2px 4px -1px rgba(5, 170, 203, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(5, 170, 203, 0.1), 0 4px 6px -2px rgba(5, 170, 203, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(5, 170, 203, 0.1), 0 10px 10px -5px rgba(5, 170, 203, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(5, 170, 203, 0.25);
    --shadow-glow: 0 0 20px rgba(5, 170, 203, 0.3);
    --shadow-cyber: 0 0 40px rgba(26, 188, 156, 0.2);
    
    /* 边框半径 */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;
    
    /* 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;
    --space-32: 8rem;
    
    /* 动画 */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

/* 基础样式 */
html {
    scroll-behavior: smooth;
    font-size: 16px;
}

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

/* 容器 */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

/* 导航栏 - 现代玻璃态效果 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar {
    padding: var(--space-4) 0;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.logo {
    height: 70px;
    width: auto;
    transition: transform var(--transition-normal);
}

.logo:hover {
    transform: scale(1.05);
}

.brand-text h1 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.brand-text span {
    color: var(--gray-500);
    font-size: 0.875rem;
    display: block;
    font-weight: 500;
    margin-top: var(--space-1);
}

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

.nav-link {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all var(--transition-normal);
    position: relative;
    padding: var(--space-2) 0;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: var(--space-1);
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--gray-700);
    transition: all var(--transition-normal);
    border-radius: var(--radius-full);
}

/* 首页横幅 - 现代英雄区 */
.hero {
    background: 
        radial-gradient(circle at 20% 30%, rgba(5, 170, 203, 0.25) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(79, 195, 217, 0.20) 0%, transparent 50%),
        linear-gradient(135deg, #05aacb 0%, #04839a 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="0.8" fill="rgba(93,173,226,0.08)"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.8;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-text {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: var(--space-6);
    color: #ffffff;
    line-height: 1.1;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.8s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #f8f9fa;
    margin-bottom: var(--space-6);
    font-weight: 600;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-description {
    font-size: 1.125rem;
    color: #e9ecef;
    line-height: 1.8;
    margin-bottom: var(--space-8);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: var(--space-4);
    justify-content: center;
    animation: fadeInUp 0.8s ease 0.6s both;
}

/* 按钮系统 */
.btn {
    padding: var(--space-3) var(--space-8);
    border-radius: var(--radius-full);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    transition: all var(--transition-normal);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
    cursor: pointer;
}

.btn::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 var(--transition-slow);
}

.btn:hover::before {
    left: 100%;
}

/* 按钮特殊光效 */
.btn-primary::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    border-radius: var(--radius-full);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: -1;
}

.btn-primary:hover::after {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    color: #2874A6;
    border: 2px solid #ffffff;
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    font-weight: 800;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    color: #1E40AF;
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 12px 35px rgba(255, 255, 255, 0.4), 0 0 30px rgba(255, 255, 255, 0.2);
    border-color: #f8f9fa;
}

.btn-secondary {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
    font-weight: 700;
    box-shadow: 0 4px 15px rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    color: #ffffff;
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
    border-color: #f8f9fa;
}

/* 通用区块样式 */
section {
    padding: var(--space-24) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-4);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.section-header p {
    font-size: 1.25rem;
    color: var(--gray-500);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* 产品中心 - 现代卡片设计 */
.products {
    background: var(--white);
    position: relative;
}

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

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
    margin-top: var(--space-16);
}

.product-card {
    background: var(--white);
    border-radius: var(--radius-3xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-slow);
    position: relative;
    border: 1px solid var(--gray-100);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-slow);
}

.product-card:hover {
    transform: translateY(-12px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

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

.product-image {
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--primary-gradient);
}

.product-card:nth-child(1) .product-image {
    background: var(--primary-gradient);
}

.product-card:nth-child(2) .product-image {
    background: var(--primary-cyber);
}

.product-card:nth-child(3) .product-image {
    background: var(--primary-dark);
}

.product-icon {
    font-size: 4rem;
    color: var(--white);
    background: rgba(255, 255, 255, 0.2);
    width: 120px;
    height: 120px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-slow);
}

.product-card:hover .product-icon {
    transform: scale(1.1) rotate(5deg);
    background: rgba(255, 255, 255, 0.3);
}

.product-content {
    padding: var(--space-8);
    position: relative;
}

.product-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: var(--space-8);
    right: var(--space-8);
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--gray-200), transparent);
}

.product-content h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
    transition: color var(--transition-normal);
}

.product-card:hover .product-content h3 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.product-content p {
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: var(--space-6);
    font-size: 1rem;
}

.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.product-features span {
    background: var(--primary-lighter);
    color: var(--primary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    border: 1px solid var(--primary);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.product-card:hover .product-features span {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
}

.product-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    transition: all var(--transition-normal);
}

.product-link::after {
    content: '→';
    margin-left: var(--space-2);
    transition: transform var(--transition-normal);
}

.product-link:hover {
    transform: translateX(4px);
}

.product-link:hover::after {
    transform: translateX(4px);
}

/* 核心业务板块 - 现代设计 */
.core-business {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    padding: var(--space-32) 0;
}

.business-block {
    background: var(--white);
    border-radius: var(--radius-3xl);
    box-shadow: var(--shadow-xl);
    margin-bottom: var(--space-16);
    overflow: hidden;
    transition: all var(--transition-slow);
    border: 1px solid var(--gray-100);
}

.business-block:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl), var(--shadow-glow);
}

.business-header {
    padding: var(--space-10) var(--space-8);
    display: flex;
    align-items: center;
    gap: var(--space-6);
    position: relative;
    color: var(--white);
    background: var(--primary-gradient);
}

.business-block:nth-child(1) .business-header {
    background: var(--primary-gradient);
}

.business-block:nth-child(2) .business-header {
    background: var(--primary-cyber);
}

.business-block:nth-child(3) .business-header {
    background: var(--primary-dark);
}

.business-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
}

.business-icon {
    font-size: 3rem;
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-slow);
}

.business-block:hover .business-icon {
    transform: scale(1.05) rotate(5deg);
    background: rgba(255, 255, 255, 0.3);
}

.business-title h3 {
    font-size: 2rem;
    font-weight: 800;
    margin: 0 0 var(--space-2) 0;
    line-height: 1.2;
}

.business-subtitle {
    font-size: 1rem;
    opacity: 0.9;
    font-weight: 600;
}

.business-content {
    padding: var(--space-10) var(--space-8);
}

.business-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    line-height: 1.8;
    margin-bottom: var(--space-10);
    text-align: center;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.business-services {
    display: grid;
    grid-template-columns: 1fr !important;
    gap: var(--space-6);
}

/* 确保所有业务板块都是单列布局 */
.business-block .business-services {
    grid-template-columns: 1fr !important;
}

.service-item {
    background: var(--gray-50);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.service-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    transform: scaleY(0);
    transition: transform var(--transition-normal);
}

.service-item:hover {
    background: var(--white);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-item:hover::before {
    transform: scaleY(1);
}

.service-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    margin-bottom: var(--space-4);
}

.service-item-icon {
    font-size: 1.5rem;
    width: 60px;
    height: 60px;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
    transition: all var(--transition-normal);
    background: var(--primary-gradient);
}

.service-item:hover .service-item-icon {
    transform: scale(1.1) rotate(5deg);
}

.service-item h4 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-800);
    margin: 0;
    line-height: 1.3;
}

.service-item p {
    color: var(--gray-500);
    line-height: 1.7;
    margin: 0;
    font-size: 0.95rem;
}

/* 解决方案区块 */
.solutions {
    background: var(--white);
    padding: var(--space-32) 0;
}

.solutions-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-10);
    margin-top: var(--space-16);
}

.solution-item {
    background: var(--white);
    border-radius: var(--radius-3xl);
    padding: var(--space-10);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
    position: relative;
    overflow: hidden;
}

.solution-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
}

.solution-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.solution-icon {
    font-size: 2.5rem;
    width: 80px;
    height: 80px;
    background: var(--primary-cyber);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    margin-bottom: var(--space-6);
    transition: all var(--transition-normal);
}

.solution-item:hover .solution-icon {
    transform: scale(1.1) rotate(5deg);
}

.solution-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
}

.solution-text p {
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: var(--space-6);
    font-size: 1rem;
}

.solution-features {
    list-style: none;
    padding: 0;
}

.solution-features li {
    color: var(--gray-600);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--gray-100);
    position: relative;
    padding-left: var(--space-6);
}

.solution-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary);
    font-weight: 700;
}

.solution-features li:last-child {
    border-bottom: none;
}

/* 成功案例区块 */
.cases {
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
    padding: var(--space-32) 0;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-10);
    margin-top: var(--space-16);
}

.case-card {
    background: var(--white);
    border-radius: var(--radius-3xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.case-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.case-image {
    height: 200px;
    background: var(--primary-cyber);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.case-icon {
    font-size: 3rem;
    color: var(--white);
    background: rgba(255, 255, 255, 0.2);
    width: 80px;
    height: 80px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-normal);
}

.case-card:hover .case-icon {
    transform: scale(1.1) rotate(5deg);
}

.case-content {
    padding: var(--space-8);
}

.case-content h3 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-4);
    line-height: 1.4;
}

.case-content p {
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: var(--space-6);
    font-size: 0.95rem;
}

.case-stats {
    display: flex;
    justify-content: space-around;
    padding-top: var(--space-6);
    border-top: 1px solid var(--gray-100);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.stat-label {
    color: var(--gray-500);
    font-size: 0.875rem;
    font-weight: 600;
}

/* 联系我们区块 */
.contact {
    background: var(--white);
    padding: var(--space-32) 0;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    max-width: 1200px;
    margin: 0 auto;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--gray-50);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-normal);
    border: 1px solid var(--gray-100);
}

.contact-item:hover {
    background: var(--white);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 1.5rem;
    width: 56px;
    height: 56px;
    background: var(--primary-cyber);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
    transition: all var(--transition-normal);
}

.contact-item:hover .contact-icon {
    transform: scale(1.1) rotate(5deg);
}

.contact-text h4 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-2);
}

.contact-text p {
    color: var(--gray-500);
    margin: 0;
    font-size: 0.95rem;
}

.contact-form {
    background: var(--gray-50);
    padding: var(--space-10);
    border-radius: var(--radius-3xl);
    border: 1px solid var(--gray-100);
}

.contact-form h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: var(--space-8);
    text-align: center;
}

.form-group {
    margin-bottom: var(--space-6);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-xl);
    font-size: 1rem;
    transition: all var(--transition-normal);
    background: var(--white);
    font-family: var(--font-sans);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(93, 173, 226, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact-form .btn {
    width: 100%;
    justify-content: center;
}

/* 页脚 - 现代设计 */
.footer {
    background: var(--gray-900);
    color: var(--white);
    padding: 2rem 0 1.5rem !important;
    position: relative;
    overflow: hidden;
}

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

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 1.5rem !important;
    margin-bottom: 1rem !important;
    padding-top: 0.5rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.75rem !important;
    color: var(--white);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.75rem !important;
    height: 80px;
}

.footer-logo {
    height: 80px;
    width: auto;
}

.footer-brand-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
    height: 100%;
}

.footer-brand-text p {
    color:  var(--white);
    margin-bottom: 0.15rem;
    font-size: 0.8rem;
    margin-left: 5px;
    line-height: 1.2;
}

.footer-brand h3 {
    font-size: 1.2rem;
    margin: 0;
    color: var(--white);
    font-weight: 800;
    margin-bottom: 0.25rem;
}

.footer-info {
    margin-top: 0;
}

.footer-info p {
    color: var(--gray-400);
    margin-bottom: 0.15rem;
    font-size: 0.8rem;
    line-height: 1.2;
}

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

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

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: all var(--transition-normal);
    font-size: 0.8rem;
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--primary);
    transform: translateX(4px);
    display: inline-block;
}

.footer-section {
    text-align: left;
}

.footer-section:nth-child(3) {
    text-align: left;
    padding-left: 0;
}

.footer-contact {
    list-style: none;
    padding: 0;
    text-align: left;
}

.footer-contact li {
    color: var(--gray-400);
    margin-bottom: 0.3rem !important;
    font-size: 0.8rem !important;
    line-height: 1.3 !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    text-align: left !important;
}

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

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

.footer-legal a {
    color: var(--gray-400);
    text-decoration: none;
    transition: all var(--transition-normal);
    font-size: 0.875rem;
    font-weight: 500;
}

.footer-legal a:hover {
    color: var(--primary);
}

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: 0.5rem !important;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-400);
    margin: 0;
    font-size: 0.7rem;
}

/* 强制页脚紧凑样式 */
.footer * {
    line-height: 1.2 !important;
}

.footer-info p,
.footer-links li,
.footer-contact li,
.footer-legal li {
    margin-bottom: 0.3rem !important;
    line-height: 1.1 !important;
}

.footer-section h4 {
    margin-bottom: 0.5rem !important;
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

/* 滚动动画 - 平衡版 */
.fade-in-up {
    opacity: 0;
    transform: translateY(25px);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.fade-in-left {
    opacity: 0;
    transform: translateX(-25px);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.fade-in-right {
    opacity: 0;
    transform: translateX(25px);
    transition: all 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* 添加轻微的缩放效果 */
.fade-in-up.visible {
    animation: fadeInUpScale 0.6s ease-out;
}

@keyframes fadeInUpScale {
    0% {
        opacity: 0;
        transform: translateY(25px) scale(0.98);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    :root {
        --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;
        --space-32: 8rem;
    }
    
    .container {
        padding: 0 var(--space-4);
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-6);
        box-shadow: var(--shadow-xl);
        border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .hamburger {
        display: flex;
    }

    .logo {
        height: 56px;
    }

    .nav-brand {
        gap: var(--space-3);
    }

    .brand-text h1 {
        font-size: 1.2rem;
        line-height: 1.1;
        white-space: nowrap;
    }

    .brand-text span {
        font-size: 0.8rem;
    }
    
    .hamburger.active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }
    
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    
    .hamburger.active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: var(--space-3);
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .section-header p {
        font-size: 1rem;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .business-header {
        flex-direction: column;
        text-align: center;
        gap: var(--space-4);
        padding: var(--space-8) var(--space-6);
    }
    
    .business-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .business-title h3 {
        font-size: 1.5rem;
    }
    
    .business-content {
        padding: var(--space-8) var(--space-6);
    }
    
    .business-description {
        font-size: 1rem;
    }
    
    .business-services {
        grid-template-columns: 1fr !important;
        gap: var(--space-4);
    }
    
    .service-item {
        padding: var(--space-6);
    }
    
    .service-item-header {
        gap: var(--space-3);
    }
    
    .service-item-icon {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }
    
    .service-item h4 {
        font-size: 1.125rem;
    }
    
    .solutions-content {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-8);
        text-align: center;
    }

    .footer-section {
        text-align: center !important;
        padding-left: 0 !important;
    }

    .footer-contact {
        text-align: center !important;
    }

    .footer-contact li {
        white-space: normal !important;
        overflow: visible !important;
        text-overflow: unset !important;
    }
    
    .footer-brand {
        flex-direction: column;
        text-align: center;
        height: auto;
        margin-bottom: 0.5rem !important;
    }

    .footer-logo {
        height: 64px;
    }

    .footer-brand h3 {
        font-size: 1.05rem;
    }
}

@media (max-width: 480px) {
    .logo {
        height: 48px;
    }

    .brand-text h1 {
        font-size: 1.05rem;
    }

    .brand-text span {
        font-size: 0.75rem;
    }

    .footer-logo {
        height: 56px;
    }

    .footer-bottom p {
        line-height: 1.4;
    }

    .footer-bottom-line {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
    }

    .footer-sep--after-copyright {
        display: none;
    }

    .footer-records {
        display: block;
    }

    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
    
    .product-content {
        padding: var(--space-6);
    }
    
    .business-header {
        padding: var(--space-6) var(--space-4);
    }
    
    .business-content {
        padding: var(--space-6) var(--space-4);
    }
    
    .service-item {
        padding: var(--space-4);
    }
    
    .solution-item {
        padding: var(--space-6);
    }
    
    .case-content {
        padding: var(--space-6);
    }
    
    .contact-form {
        padding: var(--space-6);
    }
}