/* 重置样式和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #ffffff;
}

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

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #21618c);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.3);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.btn-secondary {
    background: transparent;
    color: #3498db;
    border: 2px solid #3498db;
    padding: 10px 20px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: #3498db;
    color: white;
}

.btn-contact {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-contact:hover {
    background: linear-gradient(135deg, #c0392b, #a93226);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(231, 76, 60, 0.3);
}

/* 导航栏 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.15);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-brand h2 {
    color: #2c3e50;
    font-size: 24px;
    font-weight: 700;
    margin: 0;
}

.brand-tag {
    background: #3498db;
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: #2c3e50;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a:hover {
    color: #3498db;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #3498db;
    transition: width 0.3s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #2c3e50;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主横幅区域 */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 150px 0 100px;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.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="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2.5rem;
}

.hero-features span {
    background: rgba(255, 255, 255, 0.15);
    padding: 0.8rem 1.2rem;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 500;
    backdrop-filter: blur(10px);
}

.hero-actions {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.hero-note {
    font-size: 0.9rem;
    opacity: 0.8;
}

/* 全球网络动画 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.global-network {
    position: relative;
    width: 400px;
    height: 400px;
}

.network-center {
    width: 100px;
    height: 100px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 3s infinite;
    backdrop-filter: blur(10px);
}

.network-node {
    position: absolute;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50%;
    animation: orbit 4s linear infinite;
    animation-delay: var(--delay);
}

.network-node:nth-child(2) { top: 10%; left: 50%; }
.network-node:nth-child(3) { top: 50%; left: 90%; }
.network-node:nth-child(4) { top: 90%; left: 50%; }
.network-node:nth-child(5) { top: 50%; left: 10%; }
.network-node:nth-child(6) { top: 25%; left: 25%; }

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.7; }
    50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

@keyframes orbit {
    0% { transform: rotate(0deg) translateX(150px) rotate(0deg); }
    100% { transform: rotate(360deg) translateX(150px) rotate(-360deg); }
}

/* 关键数据展示 */
.stats-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 800;
    color: #3498db;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #3498db, #2980b9);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 1.1rem;
    color: #7f8c8d;
    font-weight: 600;
}

/* 核心优势 */
.advantages-section {
    padding: 100px 0;
}

.advantages-section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: #2c3e50;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.advantage-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.advantage-card p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 适用场景 */
.scenarios-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.scenarios-section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: #2c3e50;
}

.scenarios-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.scenario-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.scenario-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.scenario-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.scenario-card p {
    color: #7f8c8d;
    line-height: 1.6;
}

/* 企业解决方案 */
.solutions-section {
    padding: 100px 0;
}

.solutions-section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.solution-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.solution-tab {
    padding: 1rem 2rem;
    border: 2px solid #3498db;
    background: transparent;
    color: #3498db;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.solution-tab.active {
    background: #3498db;
    color: white;
}

.solution-panel {
    display: none;
    background: white;
    padding: 3rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.solution-panel.active {
    display: block;
}

.solution-panel h3 {
    font-size: 2rem;
    margin-bottom: 2rem;
    color: #2c3e50;
}

.solution-features {
    display: grid;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f8f9fa;
    border-radius: 8px;
}

.feature-check {
    color: #27ae60;
    font-weight: bold;
    font-size: 1.2rem;
}

/* 价格方案 */
.pricing-section {
    padding: 100px 0;
    background: #f8f9fa;
}

.pricing-section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: #2c3e50;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.pricing-card {
    background: white;
    padding: 3rem 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.pricing-card.popular {
    border: 3px solid #3498db;
    transform: scale(1.05);
}

.pricing-card.enterprise {
    border: 2px solid #e74c3c;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #e74c3c;
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.pricing-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.price {
    font-size: 3.5rem;
    font-weight: 800;
    color: #3498db;
    margin-bottom: 2rem;
}

.price span {
    font-size: 1.2rem;
    color: #7f8c8d;
}

.pricing-details {
    margin-bottom: 2.5rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
}

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

/* 客户见证 */
.testimonials-section {
    padding: 100px 0;
}

.testimonials-section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: #2c3e50;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2.5rem;
}

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.testimonial-content {
    font-style: italic;
    color: #555;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    position: relative;
    font-size: 1.1rem;
}

.testimonial-content::before {
    content: '"';
    font-size: 4rem;
    color: #3498db;
    position: absolute;
    top: -20px;
    left: -10px;
    opacity: 0.2;
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-info {
    display: flex;
    flex-direction: column;
}

.author-info strong {
    color: #2c3e50;
    font-weight: 600;
    font-size: 1.1rem;
}

.author-info span {
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* 合作伙伴 */
.partners-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.partners-section h2 {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: 4rem;
    color: #2c3e50;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.partner-logo {
    background: white;
    padding: 3rem 2rem;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    color: #7f8c8d;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.partner-logo:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 底部行动号召 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-align: center;
}

.cta-content h2 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.cta-content p {
    font-size: 1.2rem;
    margin-bottom: 3rem;
    opacity: 0.9;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

/* 页脚 */
.footer {
    background: #2c3e50;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1.5rem;
    color: #ecf0f1;
}

.footer-section p {
    color: #bdc3c7;
    line-height: 1.6;
}

.footer-section a {
    display: block;
    color: #bdc3c7;
    text-decoration: none;
    margin-bottom: 0.8rem;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #3498db;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #95a5a6;
}

/* 友情链接 */
.friendship-links {
    background: #ecf0f1;
    padding: 60px 0;
}

.friendship-links h3 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 3rem;
    color: #2c3e50;
    font-weight: 600;
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2.5rem;
}

.link-category {
    background: white;
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.link-category:hover {
    transform: translateY(-5px);
}

.link-category h4 {
    color: #3498db;
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    border-bottom: 3px solid #3498db;
    padding-bottom: 0.8rem;
    font-weight: 600;
}

.links-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.links-list a {
    color: #7f8c8d;
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 0.8rem 0;
    border-bottom: 1px solid #f0f0f0;
    font-weight: 500;
}

.links-list a:hover {
    color: #3498db;
    transform: translateX(8px);
    border-bottom-color: #3498db;
}

.links-list a:last-child {
    border-bottom: none;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    
    .hero h1 {
        font-size: 2.8rem;
    }
    
    .global-network {
        width: 300px;
        height: 300px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: white;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        padding: 1rem 0;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-actions {
        display: none;
    }
    
    .hero {
        padding: 120px 0 80px;
        min-height: auto;
    }
    
    .hero h1 {
        font-size: 2.2rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
    
    .advantages-grid,
    .scenarios-grid,
    .pricing-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .pricing-card.popular {
        transform: none;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}