* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: #0a0e17;
    color: #e5e7eb;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 粒子背景 */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: #0a0e17;
}

/* 语言切换 */
.lang-switcher {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
    display: flex;
    gap: 5px;
}

.lang-btn {
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(56, 189, 248, 0.3);
    color: #94a3b8;
    padding: 6px 15px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s;
}

.lang-btn.active {
    background: #38bdf8;
    color: #0a0e17;
    border-color: #38bdf8;
}

/* 导航栏 */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(10px);
    z-index: 999;
    border-bottom: 1px solid rgba(56, 189, 248, 0.1);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #38bdf8;
    text-decoration: none;
    letter-spacing: 1px;
}

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

.nav-menu a {
    color: #cbd5e1;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
    padding: 5px 0;
}

.nav-menu a.active,
.nav-menu a:hover {
    color: #38bdf8;
}

.nav-menu a.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #38bdf8, #818cf8);
}

.mobile-menu-btn {
    display: none;
    color: #cbd5e1;
    font-size: 24px;
    cursor: pointer;
}

/* 主视觉 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(90deg, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    color: #94a3b8;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.btn-primary {
    display: inline-block;
    background: linear-gradient(90deg, #38bdf8, #6366f1);
    color: white;
    padding: 15px 40px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: transform 0.3s, box-shadow 0.3s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(56, 189, 248, 0.3);
}

/* 区块通用 */
.section {
    padding: 100px 0;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 60px;
    color: #f8fafc;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #38bdf8, #818cf8);
    margin: 20px auto;
    border-radius: 2px;
}

.bg-dark {
    background: rgba(15, 23, 42, 0.5);
}

/* 关于我们 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 60px;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: #cbd5e1;
    margin-bottom: 20px;
}

.about-stats {
    display: grid;
    gap: 30px;
}

.stat {
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.2);
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    transition: transform 0.3s;
}

.stat:hover {
    transform: translateY(-5px);
    border-color: #38bdf8;
}

.stat h3 {
    font-size: 2.5rem;
    color: #38bdf8;
    margin-bottom: 10px;
}

.stat p {
    color: #94a3b8;
    font-size: 0.9rem;
}

/* 业务范围 */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(56, 189, 248, 0.1);
    border-radius: 12px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: #38bdf8;
    box-shadow: 0 15px 30px rgba(56, 189, 248, 0.1);
}

.service-icon {
    font-size: 48px;
    color: #38bdf8;
    margin-bottom: 25px;
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: #f8fafc;
}

.service-card p {
    color: #94a3b8;
    font-size: 0.95rem;
}

/* 技术栈 */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.tech-item {
    background: rgba(30, 41, 59, 0.5);
    border-radius: 10px;
    padding: 30px 20px;
    text-align: center;
    border: 1px solid rgba(56, 189, 248, 0.1);
    transition: all 0.3s;
}

.tech-item:hover {
    border-color: #38bdf8;
    transform: translateY(-5px);
}

.tech-item i {
    font-size: 40px;
    color: #38bdf8;
    margin-bottom: 20px;
}

.tech-item h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #f8fafc;
}

.tech-item p {
    color: #94a3b8;
    font-size: 0.9rem;
}

/* 客户案例 */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(56, 189, 248, 0.1);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.3s;
}

.case-card:hover {
    border-color: #38bdf8;
    transform: translateY(-5px);
}

.case-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.case-header h3 {
    font-size: 1.3rem;
    color: #f8fafc;
}

.case-tag {
    background: rgba(56, 189, 248, 0.2);
    color: #38bdf8;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.case-card p {
    color: #cbd5e1;
    line-height: 1.7;
}

/* 合作伙伴 */
.partner-hero {
    display: flex;
    align-items: center;
    gap: 40px;
    margin-bottom: 50px;
    padding: 40px;
    background: rgba(56, 189, 248, 0.05);
    border: 1px solid rgba(56, 189, 248, 0.1);
    border-radius: 12px;
}

.partner-logo {
    flex-shrink: 0;
    text-align: center;
}

.logo-text {
    font-size: 2.5rem;
    font-weight: 800;
    color: #38bdf8;
    margin-bottom: 10px;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(56, 189, 248, 0.3);
}

.partner-tag {
    display: inline-block;
    background: linear-gradient(90deg, #38bdf8, #818cf8);
    color: #0a0e17;
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
}

.partner-info h3 {
    font-size: 1.8rem;
    color: #f8fafc;
    margin-bottom: 10px;
}

.partner-info p {
    color: #94a3b8;
    font-size: 1.1rem;
}

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

.partner-project h4,
.partner-tech h4 {
    font-size: 1.4rem;
    color: #f8fafc;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(56, 189, 248, 0.3);
}

.partner-project p {
    color: #cbd5e1;
    line-height: 1.8;
    margin-bottom: 30px;
}

.project-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    background: rgba(30, 41, 59, 0.7);
    border: 1px solid rgba(56, 189, 248, 0.1);
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s;
}

.stat-item:hover {
    transform: translateY(-5px);
    border-color: #38bdf8;
}

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    color: #38bdf8;
    margin-bottom: 5px;
}

.stat-label {
    color: #94a3b8;
    font-size: 0.9rem;
}

.partner-tech ul {
    list-style: none;
}

.partner-tech li {
    color: #cbd5e1;
    padding: 12px 0;
    padding-left: 25px;
    position: relative;
    border-bottom: 1px solid rgba(56, 189, 248, 0.1);
}

.partner-tech li:last-child {
    border-bottom: none;
}

.partner-tech li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #38bdf8;
    font-weight: bold;
}

.partner-quote {
    background: rgba(56, 189, 248, 0.05);
    border-left: 4px solid #38bdf8;
    padding: 30px 40px;
    border-radius: 0 12px 12px 0;
    margin-top: 40px;
}

.partner-quote p {
    font-size: 1.2rem;
    font-style: italic;
    color: #e5e7eb;
    line-height: 1.8;
    margin-bottom: 15px;
}

.quote-author {
    color: #94a3b8;
    font-size: 0.9rem;
    text-align: right;
}

/* 联系我们 */
.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    display: grid;
    gap: 25px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(56, 189, 248, 0.1);
    border-radius: 10px;
    padding: 25px;
    transition: all 0.3s;
}

.contact-item:hover {
    border-color: #38bdf8;
    transform: translateX(5px);
}

.contact-item i {
    font-size: 28px;
    color: #38bdf8;
    width: 50px;
    text-align: center;
}

.contact-item h3 {
    font-size: 1.1rem;
    color: #94a3b8;
    margin-bottom: 5px;
}

.contact-item p {
    color: #f8fafc;
    font-size: 1.1rem;
}

/* 页脚 */
.footer {
    background: rgba(15, 23, 42, 0.8);
    padding: 40px 0;
    text-align: center;
    border-top: 1px solid rgba(56, 189, 248, 0.1);
}

.footer p {
    color: #94a3b8;
    margin: 10px 0;
}

.footer a {
    color: #38bdf8;
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        background: rgba(10, 14, 23, 0.95);
        flex-direction: column;
        padding: 20px;
        transition: 0.3s;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .partner-hero {
        flex-direction: column;
        text-align: center;
        padding: 30px 20px;
    }
    
    .partner-details {
        grid-template-columns: 1fr;
    }
    
    .project-stats {
        grid-template-columns: 1fr;
    }
    
    .logo-text {
        font-size: 2rem;
    }
    
    .partner-info h3 {
        font-size: 1.5rem;
    }
    
    .lang-switcher {
        top: 10px;
        right: 10px;
    }
}