/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo h2 {
    color: #1e3a8a;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: #00d4aa;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero区域 */
.hero {
    min-height: 100vh;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

/* 科技感背景动画 */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    animation: float 6s ease-in-out infinite;
}

.element-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.element-2 {
    width: 120px;
    height: 120px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.element-3 {
    width: 60px;
    height: 60px;
    top: 40%;
    left: 80%;
    animation-delay: 4s;
}

.element-4 {
    width: 100px;
    height: 100px;
    bottom: 20%;
    left: 20%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
        opacity: 0.6;
    }
}

.constellation-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

#constellation-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

/* 脉冲效果 */
.floating-element::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: rgba(0, 212, 170, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: pulse 3s ease-in-out infinite;
}

@keyframes pulse {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.8;
    }
    50% {
        transform: translate(-50%, -50%) scale(1.5);
        opacity: 0.2;
    }
    100% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.8;
    }
}

/* 连接线效果 */
.floating-element::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 2px;
    background: rgba(0, 212, 170, 0.6);
    border-radius: 50%;
    box-shadow: 
        0 0 10px rgba(0, 212, 170, 0.8),
        0 0 20px rgba(0, 212, 170, 0.4),
        0 0 30px rgba(0, 212, 170, 0.2);
    animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
    0% {
        box-shadow: 
            0 0 10px rgba(0, 212, 170, 0.8),
            0 0 20px rgba(0, 212, 170, 0.4),
            0 0 30px rgba(0, 212, 170, 0.2);
    }
    100% {
        box-shadow: 
            0 0 15px rgba(0, 212, 170, 1),
            0 0 25px rgba(0, 212, 170, 0.6),
            0 0 35px rgba(0, 212, 170, 0.4);
    }
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.cta-button {
    background: linear-gradient(45deg, #00d4aa, #00b894);
    color: white;
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 212, 170, 0.3);
}

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

.hero-video {
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-placeholder {
    width: 400px;
    height: 300px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    border: 2px dashed rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-placeholder:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: scale(1.05);
}

.video-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    color: #00d4aa;
}

/* 核心优势区域 */
.features {
    padding: 5rem 0;
    background: #f8fafc;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

/* 数据统计区域 */
.stats {
    padding: 4rem 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
}

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

.stat-item {
    position: relative;
    padding: 2rem 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: #00d4aa;
    margin-bottom: 0.5rem;
    display: inline-block;
}

.stat-label {
    font-size: 1.1rem;
    font-weight: 500;
    opacity: 0.9;
    margin-bottom: 0.25rem;
}

.stat-unit {
    font-size: 1.5rem;
    font-weight: 700;
    color: #00d4aa;
    display: inline-block;
    margin-left: 0.25rem;
}

/* 统计数字动画效果 */
.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, transparent, #00d4aa, transparent);
    border-radius: 2px;
}

.stat-item:hover .stat-number {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

.feature-card {
    background: white;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.feature-icon i {
    font-size: 2rem;
    color: white;
}

.feature-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e3a8a;
}

.feature-card p {
    color: #64748b;
    line-height: 1.6;
}

/* 服务概览区域 */
.services {
    padding: 5rem 0;
    background: white;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e3a8a;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.1rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.service-card {
    background: #f8fafc;
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.service-card:hover {
    border-color: #00d4aa;
    transform: translateY(-5px);
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(45deg, #00d4aa, #00b894);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.service-icon i {
    font-size: 1.8rem;
    color: white;
}

.service-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #1e3a8a;
}

.service-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
}

.service-btn {
    background: transparent;
    color: #00d4aa;
    border: 2px solid #00d4aa;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.service-btn:hover {
    background: #00d4aa;
    color: white;
}

/* 成功案例区域 */
.cases {
    padding: 5rem 0;
    background: #f8fafc;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.case-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
}

.case-image {
    height: 250px;
    background: linear-gradient(45deg, #1e3a8a, #3b82f6);
    position: relative;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.image-placeholder:hover {
    background: rgba(255, 255, 255, 0.1);
}

.image-placeholder i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #00d4aa;
}

.case-content {
    padding: 2rem;
}

.case-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: #1e3a8a;
}

.case-details {
    margin-bottom: 1.5rem;
}

.case-item {
    margin-bottom: 0.75rem;
    display: flex;
    gap: 0.5rem;
}

.case-item strong {
    color: #1e3a8a;
    min-width: 120px;
}

.case-item span {
    color: #64748b;
}

.case-btn {
    background: linear-gradient(45deg, #00d4aa, #00b894);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.case-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 170, 0.3);
}

/* 客户评价区域 */
.testimonials {
    padding: 5rem 0;
    background: #f8fafc;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
    position: relative;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 20px;
    font-size: 4rem;
    color: #00d4aa;
    font-family: serif;
    opacity: 0.3;
}

.testimonial-card:hover {
    transform: translateY(-5px);
}

.testimonial-content {
    margin-bottom: 1.5rem;
}

.testimonial-content p {
    color: #64748b;
    line-height: 1.6;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.author-avatar i {
    color: white;
    font-size: 1.2rem;
}

.author-info h4 {
    color: #1e3a8a;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.author-info span {
    color: #64748b;
    font-size: 0.9rem;
}

/* FAQ区域 */
.faq {
    padding: 5rem 0;
    background: white;
}

.faq-grid {
    max-width: 800px;
    margin: 3rem auto 0;
}

.faq-item {
    background: #f8fafc;
    border-radius: 15px;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background: rgba(0, 212, 170, 0.05);
}

.faq-question h3 {
    color: #1e3a8a;
    font-weight: 600;
    margin: 0;
    font-size: 1.1rem;
}

.faq-question i {
    color: #00d4aa;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 200px;
}

.faq-answer p {
    padding: 0 2rem 1.5rem;
    color: #64748b;
    line-height: 1.6;
    margin: 0;
}

/* 关于我们区域 */
.about {
    padding: 5rem 0;
    background: white;
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e3a8a;
    margin-bottom: 2rem;
}

.about-text p {
    font-size: 1.1rem;
    color: #64748b;
    line-height: 1.8;
    margin-bottom: 3rem;
}

.founder {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: #f8fafc;
    padding: 2rem;
    border-radius: 20px;
    text-align: left;
}

.founder-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #1e3a8a, #3b82f6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.founder-avatar i {
    font-size: 2rem;
    color: white;
}

.founder-info h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e3a8a;
    margin-bottom: 0.5rem;
}

.founder-info p {
    color: #64748b;
    margin: 0;
}

/* 联系我们区域 */
.contact {
    padding: 5rem 0;
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.contact-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.qr-code {
    margin: 2rem 0;
}

.qr-image {
    width: 200px;
    height: 200px;
    border-radius: 20px;
    margin: 0 auto;
    display: block;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.qr-image:hover {
    transform: scale(1.05);
}

.contact-note {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 1rem;
}

.contact-info {
    margin-top: 2rem;
}

.contact-info p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin: 0;
}

.contact-info i {
    color: #00d4aa;
}

/* 联系表单样式 */
.contact-form-container {
    max-width: 600px;
    margin: 2rem auto;
    background: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact-form {
    display: grid;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 0.75rem;
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.6rem 0.75rem;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 400px;
    height: 45px;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00d4aa;
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 15px rgba(0, 212, 170, 0.3);
}

.form-group select option {
    background: #1e3a8a;
    color: white;
}

/* 必填标记样式 */
.required-mark {
    color: white;
    font-weight: bold;
    font-size: 1rem;
    margin-left: 0.25rem;
}

.form-group textarea {
    height: auto;
    min-height: 80px;
    resize: vertical;
}

.submit-btn {
    background: linear-gradient(45deg, #00d4aa, #00b894);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    max-width: 400px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 212, 170, 0.3);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* 分隔线样式 */
.contact-divider {
    text-align: center;
    margin: 2rem 0;
    position: relative;
}

.contact-divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: rgba(255, 255, 255, 0.3);
}

.contact-divider span {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
    color: white;
    padding: 0 1rem;
    font-weight: 500;
}

/* 微信二维码区域 */
.qr-section {
    text-align: center;
    margin: 2rem 0;
}

.qr-section h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

/* 表单成功/错误消息 */
.form-message {
    padding: 1rem;
    border-radius: 10px;
    margin: 1rem 0;
    text-align: center;
    font-weight: 500;
}

.form-message.success {
    background: rgba(0, 212, 170, 0.2);
    color: #00d4aa;
    border: 1px solid rgba(0, 212, 170, 0.3);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* 页脚 */
.footer {
    background: #1e293b;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.footer-logo h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #00d4aa;
}

.footer-logo p {
    color: #94a3b8;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #00d4aa;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

/* 视频模态框样式 */
.video-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    backdrop-filter: blur(5px);
}

.video-modal-content {
    background: white;
    border-radius: 20px;
    padding: 2rem;
    max-width: 800px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.video-modal-close {
    position: absolute;
    top: 1rem;
    right: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: #666;
    transition: color 0.3s ease;
    z-index: 1;
}

.video-modal-close:hover {
    color: #333;
}

.video-container {
    margin-top: 1rem;
}

.video-container video {
    width: 100%;
    border-radius: 10px;
    margin-bottom: 1rem;
}

.video-info h3 {
    color: #1e3a8a;
    margin-bottom: 0.5rem;
}

.video-info p {
    color: #64748b;
    line-height: 1.6;
}

/* 加载进度条样式 */
.loading-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: rgba(255, 255, 255, 0.2);
    z-index: 10001;
}

.loading-progress {
    height: 100%;
    background: linear-gradient(90deg, #00d4aa, #00b894);
    width: 0%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(0, 212, 170, 0.5);
}

/* 返回顶部按钮样式 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #00d4aa, #00b894);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(0, 212, 170, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 212, 170, 0.4);
}

.back-to-top i {
    transition: transform 0.3s ease;
}

.back-to-top:hover i {
    transform: translateY(-2px);
}

/* 数字动画样式 */
.animate-number {
    font-weight: 700;
    color: #00d4aa;
    font-size: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    /* 移动端优化动画效果 */
    .floating-element {
        display: none;
    }
    
    .constellation-overlay {
        opacity: 0.7;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .founder {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    /* 移动端模态框优化 */
    .video-modal-content {
        width: 95%;
        padding: 1rem;
    }
    
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
    
    /* 移动端统计区域优化 */
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .stat-label {
        font-size: 1rem;
    }
    
    /* 移动端客户评价优化 */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .testimonial-card {
        padding: 1.5rem;
    }
    
    /* 移动端FAQ优化 */
    .faq-question {
        padding: 1rem 1.5rem;
    }
    
    .faq-question h3 {
        font-size: 1rem;
    }
    
    .faq-answer p {
        padding: 0 1.5rem 1rem;
    }
    
    /* 移动端表单优化 */
    .contact-form-container {
        padding: 1.5rem;
        margin: 1rem auto;
    }
    
    .contact-form {
        gap: 1rem;
    }
    
    .form-group {
        align-items: center;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        max-width: 100%;
    }
    
    .submit-btn {
        max-width: 100%;
    }
    
    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 0.6rem;
        font-size: 0.9rem;
        width: 100%;
    }
    
    .submit-btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .feature-card,
    .service-card {
        padding: 1.5rem;
    }
    
    .video-placeholder {
        width: 100%;
        height: 200px;
    }
}