/* 秘密通道在线看 - 暗色神秘科技风格 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #0d0d0d 0%, #1a0a2e 50%, #0d0d0d 100%);
    color: #e0e0e0;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 动态背景光效 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(0, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 70%, rgba(255, 0, 255, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(128, 0, 255, 0.05) 0%, transparent 60%);
    pointer-events: none;
    z-index: 0;
}

/* 扫描线效果 */
body::after {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 255, 255, 0.01) 2px,
        rgba(0, 255, 255, 0.01) 4px
    );
    pointer-events: none;
    z-index: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 10;
}

/* 顶部导航 */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 255, 255, 0.2);
    z-index: 1000;
    padding: 20px 0;
}

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

.logo {
    font-size: 1.4rem;
    font-weight: bold;
    color: #00ffff;
    text-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
    letter-spacing: 2px;
}

.logo span {
    color: #ff00ff;
    text-shadow: 0 0 10px rgba(255, 0, 255, 0.5);
}

.nav-links {
    display: flex;
    gap: 30px;
    list-style: none;
}

.nav-links a {
    color: #b0b0b0;
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.95rem;
    position: relative;
    padding: 5px 0;
}

.nav-links a:hover,
.nav-links a.active {
    color: #00ffff;
    text-shadow: 0 0 8px rgba(0, 255, 255, 0.6);
}

.nav-links a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #00ffff, #ff00ff);
    box-shadow: 0 0 10px rgba(0, 255, 255, 0.5);
}

/* 主要内容区 */
main {
    padding-top: 80px;
    position: relative;
    z-index: 10;
}

/* Hero首屏 - 全屏沉浸式 */
.hero {
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 255, 255, 0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

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

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

.hero h1 {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(90deg, #00ffff, #ff00ff, #00ffff);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shine 3s linear infinite;
    margin-bottom: 20px;
    letter-spacing: 4px;
}

@keyframes shine {
    to { background-position: 200% center; }
}

.hero p {
    font-size: 1.3rem;
    color: #a0a0c0;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-btn {
    display: inline-block;
    padding: 18px 50px;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(255, 0, 255, 0.1));
    border: 2px solid #00ffff;
    border-radius: 50px;
    color: #00ffff;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    letter-spacing: 2px;
    transition: all 0.3s;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.3);
}

.hero-btn:hover {
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.2), rgba(255, 0, 255, 0.2));
    box-shadow: 0 0 40px rgba(0, 255, 255, 0.6);
    transform: translateY(-3px);
}

/* 内容区块 */
.section {
    padding: 80px 0;
    position: relative;
}

.section-title {
    font-size: 2.5rem;
    color: #fff;
    text-align: center;
    margin-bottom: 15px;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    color: #888;
    font-size: 1.1rem;
    margin-bottom: 50px;
}

/* 特性卡片 - 网格布局 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.feature-card {
    background: linear-gradient(145deg, rgba(30, 20, 50, 0.9), rgba(20, 15, 35, 0.9));
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 15px;
    padding: 40px 30px;
    transition: all 0.4s;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #00ffff, #ff00ff);
    opacity: 0;
    transition: opacity 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: #00ffff;
    box-shadow: 0 20px 40px rgba(0, 255, 255, 0.2);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.feature-card h3 {
    color: #00ffff;
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: #a0a0b0;
    line-height: 1.7;
}

/* 数据展示区 */
.stats-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    padding: 60px 0;
}

.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(0, 255, 255, 0.03);
    border-radius: 10px;
    border: 1px solid rgba(0, 255, 255, 0.15);
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: linear-gradient(135deg, #00ffff, #ff00ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: #888;
    font-size: 1rem;
    margin-top: 5px;
}

/* 关于我们页面 */
.about-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-image {
    height: 400px;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(255, 0, 255, 0.1));
    border-radius: 20px;
    border: 1px solid rgba(0, 255, 255, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    position: relative;
    overflow: hidden;
}

.about-image::before {
    content: '';
    position: absolute;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(0, 255, 255, 0.1) 50%, transparent 70%);
    animation: rotate 10s linear infinite;
}

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

.about-text h2 {
    font-size: 2.8rem;
    color: #fff;
    margin-bottom: 25px;
}

.about-text p {
    color: #b0b0b0;
    line-height: 1.9;
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.about-mission {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-top: 40px;
}

.mission-box {
    padding: 25px;
    background: rgba(0, 255, 255, 0.05);
    border-radius: 12px;
    border-left: 4px solid #00ffff;
}

.mission-box h4 {
    color: #00ffff;
    margin-bottom: 10px;
}

.mission-box p {
    color: #999;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* 产品服务页 */
.product-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 35px;
}

.product-item {
    background: linear-gradient(160deg, rgba(25, 20, 40, 0.95), rgba(15, 12, 25, 0.95));
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(0, 255, 255, 0.15);
    transition: all 0.4s;
}

.product-item:hover {
    transform: translateY(-5px);
    border-color: #00ffff;
    box-shadow: 0 15px 50px rgba(0, 255, 255, 0.25);
}

.product-header {
    height: 200px;
    background: linear-gradient(135deg, #1a0a2e, #0d1a3a);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
}

.product-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #00ffff, transparent);
}

.product-body {
    padding: 30px;
}

.product-body h3 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.product-body p {
    color: #a0a0b0;
    line-height: 1.7;
    margin-bottom: 20px;
}

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

.product-features li {
    padding: 8px 0;
    color: #b0b0b0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.product-features li::before {
    content: '✓';
    color: #00ffff;
    font-weight: bold;
}

/* 解决方案页 - 时间线布局 */
.solution-timeline {
    position: relative;
    padding: 40px 0;
}

.solution-timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, #00ffff, #ff00ff, #00ffff);
    transform: translateX(-50%);
}

.timeline-item {
    display: grid;
    grid-template-columns: 1fr 50px 1fr;
    gap: 20px;
    margin-bottom: 50px;
    align-items: start;
}

.timeline-content {
    padding: 30px;
    background: rgba(0, 0, 0, 0.6);
    border-radius: 15px;
    border: 1px solid rgba(0, 255, 255, 0.2);
}

.timeline-content h3 {
    color: #00ffff;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.timeline-content p {
    color: #a0a0b0;
    line-height: 1.7;
}

.timeline-marker {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #00ffff, #ff00ff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 255, 0.5);
}

/* 案例展示页 */
.case-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.case-card {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    height: 280px;
    cursor: pointer;
    transition: all 0.4s;
}

.case-bg {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 25px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    transform: translateY(50%);
    transition: transform 0.4s;
}

.case-card:hover .case-overlay {
    transform: translateY(0);
}

.case-overlay h3 {
    color: #fff;
    margin-bottom: 10px;
}

.case-overlay p {
    color: #aaa;
    font-size: 0.95rem;
}

.case-tag {
    display: inline-block;
    padding: 5px 12px;
    background: rgba(0, 255, 255, 0.2);
    color: #00ffff;
    border-radius: 20px;
    font-size: 0.85rem;
    margin-bottom: 10px;
}

/* 新闻资讯页 */
.news-list {
    display: grid;
    gap: 25px;
}

.news-item {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 30px;
    padding: 25px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 15px;
    border: 1px solid rgba(0, 255, 255, 0.1);
    transition: all 0.3s;
}

.news-item:hover {
    border-color: rgba(0, 255, 255, 0.4);
    background: rgba(0, 255, 255, 0.03);
}

.news-date {
    text-align: center;
    padding: 20px;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.1), rgba(255, 0, 255, 0.1));
    border-radius: 10px;
}

.news-date .day {
    font-size: 2.5rem;
    font-weight: bold;
    color: #00ffff;
}

.news-date .month {
    color: #888;
}

.news-content h3 {
    color: #fff;
    margin-bottom: 12px;
    font-size: 1.3rem;
}

.news-content p {
    color: #999;
    line-height: 1.7;
    margin-bottom: 15px;
}

.news-meta {
    display: flex;
    gap: 20px;
    color: #666;
    font-size: 0.9rem;
}

.news-meta span::before {
    content: '◆ ';
    color: #00ffff;
}

/* 联系页 */
.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 50px;
}

.contact-info {
    padding: 40px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 20px;
    border: 1px solid rgba(0, 255, 255, 0.2);
}

.contact-info h2 {
    color: #fff;
    margin-bottom: 30px;
    font-size: 2rem;
}

.contact-item {
    display: flex;
    gap: 20px;
    padding: 20px 0;
    border-bottom: 1px solid rgba(0, 255, 255, 0.1);
}

.contact-item:last-child {
    border-bottom: none;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, rgba(0, 255, 255, 0.2), rgba(255, 0, 255, 0.2));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}

.contact-item h4 {
    color: #00ffff;
    margin-bottom: 8px;
}

.contact-item p {
    color: #b0b0b0;
}

.contact-form {
    padding: 40px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: 20px;
    border: 1px solid rgba(255, 0, 255, 0.2);
}

.contact-form h2 {
    color: #fff;
    margin-bottom: 30px;
    font-size: 2rem;
}

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

.form-group label {
    display: block;
    color: #a0a0b0;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(0, 255, 255, 0.2);
    border-radius: 10px;
    color: #fff;
    font-size: 1rem;
    transition: all 0.3s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00ffff;
    box-shadow: 0 0 15px rgba(0, 255, 255, 0.3);
}

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

.submit-btn {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, #00ffff, #ff00ff);
    border: none;
    border-radius: 10px;
    color: #000;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 255, 255, 0.4);
}

/* 页脚 */
.site-footer {
    margin-top: 80px;
    padding: 60px 0 30px;
    background: rgba(0, 0, 0, 0.5);
    border-top: 1px solid rgba(0, 255, 255, 0.2);
    position: relative;
    z-index: 10;
}

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

.footer-about h4 {
    color: #00ffff;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-about p {
    color: #888;
    line-height: 1.8;
}

.footer-links h4 {
    color: #fff;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: #888;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #00ffff;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(0, 255, 255, 0.1);
    text-align: center;
    color: #666;
}

/* 响应式 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .nav-links {
        gap: 15px;
        font-size: 0.9rem;
    }
    
    .about-layout,
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .timeline-item {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .news-item {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .container {
        padding: 0 20px;
    }
}