* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333333;
    background-color: #F5F7FA;
    scroll-behavior: smooth;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 15px 0;
    border-bottom: 1px solid #E5E7EB;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 10px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #165DFF;
    text-decoration: none;
}

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

.nav-menu li a {
    color: #333333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu li a:hover {
    color: #165DFF;
}

.nav-menu li a.active {
    color: #165DFF;
    font-weight: 600;
}

.nav-menu li a.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #165DFF;
    border-radius: 1px;
}

.cta-btn {
    background-color: #FF7D00;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.cta-btn:hover {
    background-color: #FF6B00;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 125, 0, 0.3);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
}

/* 首屏Banner */
.banner {
    padding: 150px 0 100px;
    background: transparent;
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.banner-slides {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slides::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1;
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 2;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.banner-dot.active {
    background-color: white;
    transform: scale(1.2);
}

.banner-content {
    position: relative;
    z-index: 1;
}

.banner h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    line-height: 1.2;
}

.banner p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.banner-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.banner-btn {
    padding: 15px 30px;
    border: none;
    border-radius: 5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
}

.banner-btn-primary {
    background: linear-gradient(135deg, #165DFF, #3B82F6);
    color: white;
    box-shadow: 0 4px 15px rgba(22, 93, 255, 0.3);
}

.banner-btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.banner-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

/* 通用板块样式 */
.section {
    padding: 80px 0;
}

.section-white {
    background-color: #FFFFFF;
}

.section-gray {
    background-color: #F5F7FA;
}

.section-title {
    font-size: 36px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 60px;
    color: #333333;
}

.section-subtitle {
    font-size: 18px;
    text-align: center;
    margin-bottom: 40px;
    color: #666666;
}

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

.about-text h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 20px;
    color: #165DFF;
}

.about-text p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
}

.about-image {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

/* 信任危机板块 */
.crisis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.crisis-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    padding: 30px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid rgba(22, 93, 255, 0.1);
}

.crisis-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.12);
    border-color: rgba(22, 93, 255, 0.3);
}

.crisis-number {
    font-size: 36px;
    font-weight: 700;
    background: linear-gradient(135deg, #165DFF, #3B82F6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.crisis-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: #333333;
    transition: color 0.3s ease;
}

.crisis-card:hover .crisis-title {
    color: #165DFF;
}

.crisis-desc {
    font-size: 14px;
    color: #666666;
    line-height: 1.6;
}

/* 解决方案板块 */
.solution-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.solution-card {
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: all 0.3s ease;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.solution-icon {
    font-size: 48px;
    color: #165DFF;
    margin-bottom: 20px;
}

.solution-title {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333333;
}

.solution-desc {
    font-size: 14px;
    color: #666666;
    line-height: 1.6;
}

/* 服务体系板块 */
.process-steps {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-bottom: 60px;
}

.process-step {
    flex: 1;
    min-width: 180px;
    text-align: center;
    position: relative;
    padding: 30px 20px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.process-step:nth-child(1) {
    background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.process-step:nth-child(2) {
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
}

.process-step:nth-child(3) {
    background: linear-gradient(135deg, #fff7ed 0%, #fed7aa 100%);
}

.process-step:nth-child(4) {
    background: linear-gradient(135deg, #fdf4ff 0%, #ede9fe 100%);
}

.process-step:nth-child(5) {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.process-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.process-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 50%;
    right: -15px;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, #165DFF, transparent);
    transform: translateY(-50%);
}

.process-number {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, #165DFF, #3B82F6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.3);
}

.process-step:hover .process-number {
    transform: scale(1.1);
    background: linear-gradient(135deg, #0F48CC, #1D4ED8);
    box-shadow: 0 6px 20px rgba(22, 93, 255, 0.4);
}

.process-title {
    font-size: 16px;
    font-weight: 600;
    color: #333333;
    transition: color 0.3s ease;
}

.process-step:hover .process-title {
    color: #165DFF;
}

/* 核心优势板块 */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.advantage-card {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    font-size: 36px;
    color: #165DFF;
    margin-bottom: 15px;
}

.advantage-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333333;
}

.advantage-desc {
    font-size: 14px;
    color: #666666;
    line-height: 1.6;
}

/* 成功案例板块 */
.case-content {
    background-color: white;
    padding: 50px;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.case-section {
    margin-bottom: 40px;
}

.case-section:last-child {
    margin-bottom: 0;
}

.case-title {
    font-size: 20px;
    font-weight: bold;
    color: #165DFF;
    margin-bottom: 15px;
}

.case-desc {
    font-size: 16px;
    line-height: 1.8;
    color: #666666;
}

/* 合作流程板块 */
.flow-steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
    position: relative;
}

.flow-steps::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 30px;
    bottom: 30px;
    width: 2px;
    background: linear-gradient(to bottom, #165DFF, #3B82F6, #165DFF);
    z-index: 1;
}

.flow-step {
    display: flex;
    align-items: flex-start;
    gap: 25px;
    position: relative;
    z-index: 2;
    padding-left: 20px;
}

.flow-step::after {
    content: '↓';
    position: absolute;
    left: 28px;
    top: 65px;
    font-size: 16px;
    color: #165DFF;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(22, 93, 255, 0.5);
}

.flow-step:last-child::after {
    display: none;
}

.flow-number {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: linear-gradient(135deg, #165DFF, #3B82F6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    flex-shrink: 0;
    box-shadow: 0 4px 15px rgba(22, 93, 255, 0.4);
    transition: all 0.3s ease;
    border: 3px solid white;
    position: relative;
}

.flow-number::before {
    content: '';
    position: absolute;
    top: -5px;
    left: -5px;
    right: -5px;
    bottom: -5px;
    border-radius: 50%;
    background: linear-gradient(45deg, #165DFF, #3B82F6);
    opacity: 0.3;
    z-index: -1;
}

.flow-step:hover .flow-number {
    transform: scale(1.1);
    background: linear-gradient(135deg, #0F48CC, #1D4ED8);
    box-shadow: 0 6px 25px rgba(22, 93, 255, 0.6);
}

.flow-content {
    flex: 1;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    padding: 25px 30px;
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
    border: 1px solid rgba(22, 93, 255, 0.1);
}

.flow-step:hover .flow-content {
    transform: translateX(10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: rgba(22, 93, 255, 0.3);
}

.flow-content h4 {
    font-size: 18px;
    font-weight: 600;
    color: #333333;
    margin-bottom: 10px;
    transition: color 0.3s ease;
}

.flow-step:hover .flow-content h4 {
    color: #165DFF;
}

.flow-content p {
    font-size: 14px;
    color: #666666;
    line-height: 1.6;
}

/* 联系我们板块 */
.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    align-items: start;
    max-width: 900px;
    margin: 0 auto;
}

.contact-form {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    padding: 25px;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(22, 93, 255, 0.1);
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
    color: #333333;
    font-size: 13px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #E5E7EB;
    border-radius: 8px;
    font-size: 13px;
    transition: all 0.3s ease;
    background-color: white;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #165DFF;
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
}

.submit-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #165DFF, #3B82F6);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    box-shadow: 0 4px 15px rgba(22, 93, 255, 0.3);
}

.submit-btn:hover {
    background: linear-gradient(135deg, #0F48CC, #1D4ED8);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(22, 93, 255, 0.4);
}

.contact-info {
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    color: #333333;
    padding: 25px;
    border-radius: 16px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(22, 93, 255, 0.1);
}

.contact-info h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #333333;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    padding: 12px;
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #165DFF, #3B82F6);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.3);
}

.contact-text h4 {
    font-weight: 600;
    margin-bottom: 4px;
    color: #333333;
    font-size: 14px;
}

.contact-text p {
    color: #666666;
    font-size: 13px;
    margin: 0;
    opacity: 0.9;
}

/* 页脚样式 */
.footer {
    background-color: #333333;
    color: white;
    padding: 40px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}

.footer-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 15px;
    color: #f0f0f0;
}

.footer-section p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
    margin-bottom: 15px;
}

.footer-nav {
    list-style: none;
}

.footer-nav li {
    margin-bottom: 8px;
}

.footer-nav li a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: all 0.3s ease;
}

.footer-nav li a:hover {
    color: #165DFF;
    padding-left: 5px;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: #165DFF;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: #0F48CC;
    transform: translateY(-2px);
}

/* 成功提示弹窗 */
.success-modal {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    text-align: center;
    max-width: 400px;
    width: 90%;
}

.success-modal.show {
    opacity: 1;
    visibility: visible;
}

.success-icon {
    font-size: 48px;
    color: #00B42A;
    margin-bottom: 20px;
}

.success-modal h3 {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333333;
}

.success-modal p {
    color: #666666;
    margin-bottom: 30px;
}

.close-modal {
    padding: 10px 20px;
    background-color: #165DFF;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.close-modal:hover {
    background-color: #0F48CC;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: white;
        padding: 20px;
        box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
        flex-direction: column;
        gap: 15px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .banner h1 {
        font-size: 36px;
    }
    
    .banner p {
        font-size: 18px;
    }
    
    .banner-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .process-steps {
        flex-direction: column;
        align-items: center;
    }
    
    .process-step:not(:last-child)::after {
        display: none;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .case-content {
        padding: 30px;
    }
    
    .flow-steps::before {
        left: 25px;
    }
    
    .flow-step {
        padding-left: 15px;
        gap: 20px;
    }
    
    .flow-step::after {
        left: 23px;
        top: 55px;
        font-size: 14px;
    }
    
    .flow-number {
        width: 50px;
        height: 50px;
        font-size: 20px;
        border-width: 2px;
    }
    
    .flow-content {
        padding: 20px 25px;
    }
    
    .flow-content h4 {
        font-size: 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .banner {
        padding: 120px 0 80px;
    }
    
    .banner h1 {
        font-size: 28px;
    }
    
    .banner p {
        font-size: 16px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-title {
        font-size: 24px;
        margin-bottom: 40px;
    }
    
    .crisis-grid,
    .solution-grid,
    .advantages-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form,
    .contact-info {
        padding: 30px 20px;
    }
}