/*!
 * 安徽二零二零信息技术有限公司
 * 高端科技感官网样式系统
 * Author: 2020 Tech
 * Version: 1.0.0
 */

/* ==================== CSS变量定义 ==================== */
:root {
    /* 主色调 - 深邃科技蓝 */
    --primary-color: #0066ff;
    --primary-light: #3385ff;
    --primary-dark: #0052cc;
    --primary-glow: rgba(0, 102, 255, 0.3);
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, #0066ff 0%, #00d4ff 50%, #7b2cbf 100%);
    --gradient-hero: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #16213e 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --gradient-text: linear-gradient(90deg, #00d4ff, #7b2cbf, #ff006e);
    
    /* 背景色 */
    --bg-dark: #0a0a0a;
    --bg-dark-soft: #121212;
    --bg-dark-accent: #1a1a2e;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.08);
    
    /* 文字颜色 */
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #666666;
    --text-accent: #00d4ff;
    
    /* 边框色 */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-light: rgba(255, 255, 255, 0.05);
    
    /* 间距 */
    --section-padding: 100px 0;
    --container-width: 1400px;
    
    /* 动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* 阴影 */
    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 5px 30px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 60px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px var(--primary-glow);
    
    /* 圆角 */
    --radius-sm: 4px;
    --radius-md: 10px;
    --radius-lg: 20px;
    --radius-xl: 30px;
}

/* ==================== 重置样式 ==================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Hiragino Sans GB', 'Segoe UI', Arial, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

img {
    max-width: 100%;
    height: auto;
    display: block;
}

ul, ol {
    list-style: none;
}

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
}

/* ==================== 通用类 ==================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: var(--section-padding);
    position: relative;
}

.section-title {
    font-size: 2.5em;
    font-weight: 700;
    text-align: center;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 15px auto 0;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1em;
    color: var(--text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px;
}

.text-gradient {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
}

.bg-dots {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 30px 30px;
    pointer-events: none;
    opacity: 0.5;
}

/* ==================== 按钮样式 ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 32px;
    font-size: 1em;
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: 0.5s;
    z-index: -1;
}

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

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.btn-white {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
}

.btn-white:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.9em;
}

.btn-lg {
    padding: 18px 40px;
    font-size: 1.1em;
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
    transition: var(--transition-normal);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    padding: 10px 0;
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid var(--border-color-light);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4em;
    font-weight: 700;
    color: #fff;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2em;
    font-weight: 800;
    box-shadow: 0 0 20px var(--primary-glow);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-item {
    padding: 10px 20px;
    font-size: 0.95em;
    color: var(--text-secondary);
    position: relative;
    transition: var(--transition-normal);
}

.nav-item::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition-normal);
    transform: translateX(-50%);
}

.nav-item:hover, .nav-item.active {
    color: #fff;
}

.nav-item:hover::after, .nav-item.active::after {
    width: 30px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: #fff;
    transition: var(--transition-normal);
}

/* ==================== Hero区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-hero);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 102, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(123, 44, 191, 0.1) 0%, transparent 40%),
        radial-gradient(ellipse at 40% 80%, rgba(0, 212, 255, 0.1) 0%, transparent 40%);
    animation: heroGlow 15s ease-in-out infinite;
}

@keyframes heroGlow {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(5%, 5%); }
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(60px, 60px); }
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary-color);
    border-radius: 50%;
    opacity: 0.5;
    animation: float 10s infinite ease-in-out;
}

.particle:nth-child(1) { left: 10%; top: 20%; animation-delay: 0s; }
.particle:nth-child(2) { left: 20%; top: 80%; animation-delay: 2s; }
.particle:nth-child(3) { left: 60%; top: 10%; animation-delay: 4s; }
.particle:nth-child(4) { left: 80%; top: 60%; animation-delay: 1s; }
.particle:nth-child(5) { left: 40%; top: 50%; animation-delay: 3s; }
.particle:nth-child(6) { left: 70%; top: 30%; animation-delay: 5s; }

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0.5; }
    50% { transform: translateY(-30px) scale(1.5); opacity: 0.8; }
}

.hero-content {
    text-align: center;
    z-index: 2;
    padding: 0 20px;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    font-size: 0.9em;
    color: var(--primary-light);
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    animation: fadeInDown 0.8s ease;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-size: clamp(2.5em, 6vw, 4.5em);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title-gradient {
    background: linear-gradient(135deg, #fff 0%, #00d4ff 50%, #7b2cbf 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-desc {
    font-size: 1.2em;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 80px;
    animation: fadeInUp 0.8s ease 0.8s both;
}

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

.hero-stat-number {
    font-size: 2.5em;
    font-weight: 800;
    color: var(--text-accent);
    display: block;
}

.hero-stat-label {
    font-size: 0.9em;
    color: var(--text-muted);
    margin-top: 5px;
}

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

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

/* ==================== 特性卡片 ==================== */
.features {
    position: relative;
    background: var(--bg-dark-soft);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    transition: var(--transition-normal);
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition-normal);
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 102, 255, 0.3);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    margin-bottom: 25px;
    transition: var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--gradient-primary);
    border-color: transparent;
    box-shadow: 0 0 30px var(--primary-glow);
}

.feature-title {
    font-size: 1.3em;
    font-weight: 700;
    margin-bottom: 15px;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.95em;
    line-height: 1.7;
}

/* ==================== 产品展示 ==================== */
.products {
    position: relative;
    background: var(--bg-dark);
}

.products-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.95em;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 30px;
}

.product-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    transition: var(--transition-normal);
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(0, 102, 255, 0.3);
}

.product-image {
    position: relative;
    height: 250px;
    background: var(--bg-dark-soft);
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 5px 15px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 0.8em;
    font-weight: 600;
}

.product-info {
    padding: 25px;
}

.product-category {
    font-size: 0.85em;
    color: var(--text-accent);
    margin-bottom: 8px;
}

.product-name {
    font-size: 1.2em;
    font-weight: 700;
    margin-bottom: 10px;
    transition: var(--transition-normal);
}

.product-card:hover .product-name {
    color: var(--primary-light);
}

.product-desc {
    font-size: 0.9em;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.product-price {
    font-size: 1.3em;
    font-weight: 700;
    color: var(--primary-light);
}

.product-price del {
    font-size: 0.8em;
    color: var(--text-muted);
    margin-left: 8px;
}

.product-btn {
    padding: 8px 20px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9em;
    cursor: pointer;
    transition: var(--transition-normal);
}

.product-btn:hover {
    background: var(--gradient-primary);
    border-color: transparent;
    color: #fff;
}

/* ==================== 解决方案 ==================== */
.solutions {
    position: relative;
    background: var(--bg-dark-soft);
}

.solutions-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 30px;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 1em;
}

.tab-btn:hover, .tab-btn.active {
    background: var(--bg-card);
    border-color: var(--primary-color);
    color: var(--primary-light);
}

.solutions-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.solution-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4/3;
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.solution-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
}

.solution-info {
    padding: 40px;
}

.solution-title {
    font-size: 2em;
    font-weight: 700;
    margin-bottom: 20px;
}

.solution-category {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(0, 102, 255, 0.1);
    border: 1px solid rgba(0, 102, 255, 0.3);
    border-radius: 50px;
    color: var(--primary-light);
    font-size: 0.85em;
    margin-bottom: 15px;
}

.solution-desc {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.solution-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 30px;
}

.solution-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.solution-feature-icon {
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 0.7em;
    flex-shrink: 0;
}

/* ==================== 合作伙伴 ==================== */
.partners {
    position: relative;
    background: var(--bg-dark);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 30px;
}

.partner-item {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100px;
    transition: var(--transition-normal);
}

.partner-item:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.partner-item img {
    max-width: 120px;
    max-height: 50px;
    filter: grayscale(100%);
    opacity: 0.6;
    transition: var(--transition-normal);
}

.partner-item:hover img {
    filter: grayscale(0%);
    opacity: 1;
}

/* ==================== 新闻资讯 ==================== */
.news {
    position: relative;
    background: var(--bg-dark-soft);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    height: 220px;
    overflow: hidden;
    position: relative;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 5px 12px;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.8em;
}

.news-content {
    padding: 25px;
}

.news-date {
    font-size: 0.85em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.news-title {
    font-size: 1.2em;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.5;
    transition: var(--transition-normal);
}

.news-card:hover .news-title {
    color: var(--primary-light);
}

.news-summary {
    font-size: 0.9em;
    color: var(--text-secondary);
    line-height: 1.7;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ==================== 统计区域 ==================== */
.stats {
    position: relative;
    background: var(--gradient-hero);
    padding: 80px 0;
}

.stats::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"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="0.5"/></svg>') center/200px no-repeat;
    opacity: 0.5;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    position: relative;
    z-index: 1;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5em;
    margin: 0 auto 20px;
}

.stat-number {
    font-size: 2.5em;
    font-weight: 800;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1em;
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ==================== 关于我们 ==================== */
.about {
    position: relative;
    background: var(--bg-dark);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-image::before {
    content: '';
    position: absolute;
    top: -20px;
    left: -20px;
    right: 20px;
    bottom: 20px;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-lg);
    opacity: 0.3;
}

.about-image img {
    width: 100%;
    border-radius: var(--radius-lg);
}

.about-info h2 {
    font-size: 2.2em;
    font-weight: 700;
    margin-bottom: 20px;
}

.about-info h2 span {
    color: var(--primary-light);
}

.about-text {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.about-feature-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-light);
}

/* ==================== 团队成员 ==================== */
.team {
    position: relative;
    background: var(--bg-dark-soft);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.team-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 30px;
    text-align: center;
    transition: var(--transition-normal);
}

.team-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: var(--gradient-card);
    border: 3px solid var(--primary-color);
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5em;
    color: var(--primary-light);
    overflow: hidden;
}

.team-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.team-name {
    font-size: 1.3em;
    font-weight: 700;
    margin-bottom: 8px;
}

.team-position {
    color: var(--text-accent);
    font-size: 0.9em;
    margin-bottom: 15px;
}

.team-bio {
    color: var(--text-secondary);
    font-size: 0.9em;
    line-height: 1.6;
}

/* ==================== 荣誉资质 ==================== */
.honors {
    position: relative;
    background: var(--bg-dark);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 30px;
}

.honor-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 25px;
    text-align: center;
    transition: var(--transition-normal);
}

.honor-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.honor-image {
    width: 100%;
    height: 150px;
    background: var(--bg-dark-soft);
    border-radius: var(--radius-sm);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.honor-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.honor-title {
    font-size: 1em;
    font-weight: 600;
    margin-bottom: 8px;
}

.honor-desc {
    font-size: 0.85em;
    color: var(--text-muted);
}

/* ==================== 客户案例 ==================== */
.cases {
    position: relative;
    background: var(--bg-dark-soft);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
    gap: 30px;
}

.case-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-normal);
}

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

.case-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-category {
    position: absolute;
    top: 15px;
    left: 15px;
    padding: 5px 15px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 0.8em;
}

.case-content {
    padding: 30px;
}

.case-client {
    font-size: 0.9em;
    color: var(--text-accent);
    margin-bottom: 10px;
}

.case-title {
    font-size: 1.3em;
    font-weight: 700;
    margin-bottom: 15px;
}

.case-result {
    background: rgba(0, 102, 255, 0.1);
    border-radius: var(--radius-md);
    padding: 15px;
    margin-top: 15px;
}

.case-result-label {
    font-size: 0.8em;
    color: var(--text-muted);
    margin-bottom: 5px;
}

.case-result-value {
    font-size: 1.1em;
    font-weight: 600;
    color: var(--primary-light);
}

/* ==================== 联系表单 ==================== */
.contact {
    position: relative;
    background: var(--bg-dark);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info h2 {
    font-size: 2.2em;
    font-weight: 700;
    margin-bottom: 20px;
}

.contact-desc {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.contact-items {
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-item-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-item-text h4 {
    font-size: 1em;
    margin-bottom: 5px;
}

.contact-item-text p {
    color: var(--text-secondary);
    font-size: 0.95em;
}

.contact-form {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.form-title {
    font-size: 1.5em;
    font-weight: 700;
    margin-bottom: 25px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    background: var(--bg-dark-soft);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    transition: var(--transition-normal);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

/* ==================== 页脚 ==================== */
.footer {
    position: relative;
    background: var(--bg-dark-soft);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 50px;
    margin-bottom: 40px;
}

.footer-about .logo {
    margin-bottom: 20px;
}

.footer-about p {
    color: var(--text-secondary);
    font-size: 0.95em;
    line-height: 1.7;
}

.footer-title {
    font-size: 1.1em;
    font-weight: 700;
    margin-bottom: 20px;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--gradient-primary);
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95em;
    transition: var(--transition-normal);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-contact p {
    color: var(--text-secondary);
    font-size: 0.95em;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.9em;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.social-link:hover {
    background: var(--gradient-primary);
    border-color: transparent;
}

/* ==================== 页面标题 ==================== */
.page-header {
    position: relative;
    padding: 180px 0 100px;
    background: var(--gradient-hero);
    text-align: center;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 50% 50%, rgba(0, 102, 255, 0.1) 0%, transparent 60%);
}

.page-title {
    font-size: clamp(2em, 5vw, 3em);
    font-weight: 800;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.page-subtitle {
    font-size: 1.1em;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    font-size: 0.9em;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

.breadcrumb a {
    color: var(--text-secondary);
}

.breadcrumb a:hover {
    color: var(--primary-light);
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1200px) {
    .container {
        max-width: 1100px;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 992px) {
    :root {
        --section-padding: 80px 0;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 400px;
        height: 100vh;
        background: var(--bg-dark-soft);
        flex-direction: column;
        justify-content: center;
        padding: 40px;
        transition: var(--transition-normal);
        border-left: 1px solid var(--border-color);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-toggle {
        display: flex;
        z-index: 1001;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero-stats {
        flex-wrap: wrap;
        gap: 30px;
    }
    
    .solutions-content,
    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px 0;
    }
    
    .section-title {
        font-size: 2em;
    }
    
    .hero-title {
        font-size: 2em;
    }
    
    .hero-desc {
        font-size: 1em;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .products-grid,
    .news-grid,
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-features {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 1.6em;
    }
    
    .btn {
        padding: 12px 24px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .products-filter,
    .solutions-tabs {
        overflow-x: auto;
        justify-content: flex-start;
        padding-bottom: 10px;
    }
}

/* ==================== 动画类 ==================== */
.fade-in {
    animation: fadeIn 0.5s ease forwards;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in-up {
    animation: fadeInUp 0.5s ease forwards;
}

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

.slide-in-left {
    animation: slideInLeft 0.5s ease forwards;
}

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

.slide-in-right {
    animation: slideInRight 0.5s ease forwards;
}

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

/* 滚动动画触发类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}

/* ==================== 工具类 ==================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 10px; }
.mt-2 { margin-top: 20px; }
.mt-3 { margin-top: 30px; }
.mt-4 { margin-top: 40px; }
.mt-5 { margin-top: 50px; }

.mb-1 { margin-bottom: 10px; }
.mb-2 { margin-bottom: 20px; }
.mb-3 { margin-bottom: 30px; }
.mb-4 { margin-bottom: 40px; }
.mb-5 { margin-bottom: 50px; }

.hidden { display: none; }
.visible { display: block; }

.d-flex { display: flex; }
.d-grid { display: grid; }
.d-block { display: block; }
.d-inline-block { display: inline-block; }

/* 加载动画 */
.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 4em;
    margin-bottom: 20px;
    opacity: 0.5;
}

/* 徽章 */
.badge {
    display: inline-block;
    padding: 4px 12px;
    font-size: 0.8em;
    font-weight: 600;
    border-radius: 50px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

.badge-primary {
    background: rgba(0, 102, 255, 0.1);
    border-color: rgba(0, 102, 255, 0.3);
    color: var(--primary-light);
}

.badge-success {
    background: rgba(76, 175, 80, 0.1);
    border-color: rgba(76, 175, 80, 0.3);
    color: #4caf50;
}

.badge-warning {
    background: rgba(255, 152, 0, 0.1);
    border-color: rgba(255, 152, 0, 0.3);
    color: #ff9800;
}

/* ==================== 返回顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
    transition: all 0.3s ease;
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 30px rgba(0, 102, 255, 0.6);
}

.back-to-top span {
    color: #fff;
    font-size: 1.5em;
    font-weight: bold;
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
    }
}