/* 全局样式重置和基础设置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* 导航栏样式 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    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;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    color: #2563eb;
}

.logo-img {
    width: 40px;
    height: 40px;
}

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

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

.nav-link:hover {
    color: #2563eb;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    transition: width 0.3s ease;
}

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

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

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

/* 首页Banner样式 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
}

.hero-background-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3;
}

.hero-background-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.8) 0%, rgba(118, 75, 162, 0.8) 100%);
    z-index: 2;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    z-index: 2;
    position: relative;
}

.hero-content {
    color: white;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 20px;
    backdrop-filter: blur(10px);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
}

.gradient-text {
    background: linear-gradient(135deg, #ffd700, #ff6b6b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 40px;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #ffd700;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 15px 30px;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #ff6b6b, #ffd700);
    color: white;
    box-shadow: 0 10px 30px rgba(255, 107, 107, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(255, 107, 107, 0.4);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.5);
}

/* AI演示区域 */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.ai-demo-container {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 20px;
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.ai-demo-screenshot {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    width: 400px;
    height: 250px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

.platform-screenshot {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.ai-demo-screenshot:hover .platform-screenshot {
    transform: scale(1.05);
}

.screenshot-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.ai-demo-screenshot:hover .screenshot-overlay {
    opacity: 1;
}

.play-button {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.play-button:hover {
    background: white;
    transform: scale(1.1);
}

.play-button i {
    font-size: 2rem;
    color: #2563eb;
    margin-left: 5px;
}

/* 浮动背景元素 */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 1;
}

.floating-elements {
    position: relative;
    width: 100%;
    height: 100%;
}

.floating-element {
    position: absolute;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    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);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

/* 通用区块样式 */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #64748b;
    max-width: 600px;
    margin: 0 auto;
}

/* 公司简介样式 */
.about {
    background: #f8fafc;
}

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

.about-description {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #475569;
    margin-bottom: 40px;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 20px;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.feature-content h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 8px;
}

.feature-content p {
    color: #64748b;
    font-size: 0.95rem;
}

.company-stats {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.stat-card {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s ease;
}

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

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #10b981, #059669);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.stat-info {
    flex: 1;
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 5px;
}

.stat-label {
    color: #64748b;
    font-size: 0.9rem;
}

/* 核心业务样式 */
.services {
    background: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
}

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

.service-card.featured {
    border: 2px solid #2563eb;
    background: linear-gradient(135deg, #f8fafc, #e0f2fe);
}

.service-badge {
    position: absolute;
    top: -10px;
    right: 20px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
}

.service-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.8rem;
    margin-bottom: 25px;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 20px;
}

.service-features {
    margin-bottom: 25px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: #475569;
}

.feature i {
    color: #10b981;
    font-size: 0.9rem;
}

.service-description {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-highlight {
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    padding: 10px 15px;
    border-radius: 10px;
    text-align: center;
}

.highlight-text {
    font-weight: 600;
    color: #92400e;
    font-size: 0.9rem;
}

/* 技术优势样式 */
.technology {
    background: linear-gradient(135deg, #1e293b, #334155);
    color: white;
}

.technology .section-title,
.technology .section-subtitle {
    color: white;
}

.tech-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    margin-bottom: 60px;
}

.tech-diagram {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 30px;
    backdrop-filter: blur(10px);
}

.tech-layer {
    margin-bottom: 20px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border-left: 4px solid #3b82f6;
}

.layer-title {
    font-weight: 600;
    margin-bottom: 15px;
    color: #3b82f6;
}

.layer-items {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-item {
    background: rgba(59, 130, 246, 0.2);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.tech-features {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.tech-feature {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.tech-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.tech-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.tech-content p {
    color: #cbd5e1;
    line-height: 1.6;
}

.tech-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
}

.metric-item {
    text-align: center;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

.metric-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: #3b82f6;
    margin-bottom: 10px;
}

.metric-label {
    color: #cbd5e1;
    font-size: 0.9rem;
}

/* 成功案例样式 */
.cases {
    background: #f8fafc;
}

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

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

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

.case-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.case-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.case-card:hover .case-img {
    transform: scale(1.05);
}

.case-category {
    display: inline-block;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    padding: 5px 15px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 600;
    margin: 20px 20px 15px 20px;
}

.case-title {
    font-size: 1.3rem;
    font-weight: 600;
    color: #1e293b;
    margin: 0 20px 15px 20px;
}

.case-description {
    color: #64748b;
    line-height: 1.6;
    margin: 0 20px 20px 20px;
}

.case-results {
    display: flex;
    gap: 20px;
    margin: 0 20px 20px 20px;
}

.result-item {
    text-align: center;
    flex: 1;
}

.result-label {
    display: block;
    color: #64748b;
    font-size: 0.8rem;
    margin-bottom: 5px;
}

.result-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #10b981;
}

/* 价格方案样式 */
.pricing {
    background: #0f172a;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.pricing::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    pointer-events: none;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 50px;
    position: relative;
    z-index: 1;
}

.pricing-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
}

.pricing-card:hover {
    transform: translateY(-10px);
    border-color: rgba(59, 130, 246, 0.5);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.pricing-card-featured {
    border-color: rgba(139, 92, 246, 0.6);
    background: rgba(139, 92, 246, 0.15);
    transform: scale(1.05);
}

.pricing-card-featured:hover {
    transform: scale(1.05) translateY(-10px);
    box-shadow: 0 25px 50px rgba(139, 92, 246, 0.3);
}

.pricing-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, #8b5cf6, #3b82f6);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

.pricing-header {
    margin-bottom: 30px;
}

.pricing-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
    margin-bottom: 15px;
}

.pricing-price {
    margin-bottom: 15px;
}

.price-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: white;
    display: block;
}

.price-period {
    font-size: 1rem;
    color: #e2e8f0;
    margin-left: 5px;
}

.pricing-description {
    color: #e2e8f0;
    font-size: 0.95rem;
    line-height: 1.5;
}

.pricing-features {
    margin-bottom: 30px;
}

.feature-category {
    margin-bottom: 25px;
}

.feature-category:last-child {
    margin-bottom: 0;
}

.feature-category-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: #94a3b8;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    /* color: #ffffff; */
    font-size: 0.85rem;
    font-weight: 500;
}

.feature-check {
    color: #10b981;
    font-size: 1rem;
    width: 16px;
}

.feature-cross {
    color: #ef4444;
    font-size: 1rem;
    width: 16px;
    flex-shrink: 0;
}

.pricing-btn {
    width: 100%;
    padding: 15px 20px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.pricing-btn-outline {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.pricing-btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

.pricing-btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.pricing-btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(59, 130, 246, 0.3);
}

.pricing-btn-gradient {
    background: linear-gradient(135deg, #8b5cf6, #3b82f6);
    color: white;
}

.pricing-btn-gradient:hover {
    background: linear-gradient(135deg, #7c3aed, #2563eb);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(139, 92, 246, 0.3);
}

.pricing-footer {
    text-align: center;
    margin-top: 50px;
}

.pricing-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.pricing-link:hover {
    color: #3b82f6;
}

.pricing-link i {
    transition: transform 0.3s ease;
}

.pricing-link:hover i {
    transform: translateY(2px);
}

/* 联系我们样式 */
.contact {
    background: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: #f8fafc;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.contact-details h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: #1e293b;
    margin-bottom: 5px;
}

.contact-details p {
    color: #64748b;
    font-size: 0.95rem;
}

.contact-form {
    background: #f8fafc;
    padding: 40px;
    border-radius: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

/* 页脚样式 */
.footer {
    background: #1e293b;
    color: white;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.5rem;
    margin-bottom: 15px;
}

.footer-description {
    color: #94a3b8;
    line-height: 1.6;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

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

.footer-links li {
    margin-bottom: 10px;
}

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

.footer-links a:hover {
    color: #3b82f6;
}

.footer-contact p {
    color: #94a3b8;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 20px;
    text-align: center;
    color: #94a3b8;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideIn 0.3s ease;
}

.video-modal {
    max-width: 800px;
}

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

.modal-header {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    padding: 20px 30px;
    border-radius: 20px 20px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 0.7;
}

.modal-body {
    padding: 30px;
}

.video-container {
    position: relative;
    width: 100%;
    height: 0;
    padding-bottom: 56.25%; /* 16:9 比例 */
    overflow: hidden;
    border-radius: 10px;
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

.modal-benefits {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 30px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 15px;
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #374151;
    font-weight: 500;
}

.benefit-item i {
    color: #10b981;
    width: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
    transition: all 0.3s ease;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
}

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

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .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: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        justify-content: center;
        gap: 20px;
    }

    .hero-cta {
        justify-content: center;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .tech-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .cases-grid {
        grid-template-columns: 1fr;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .pricing-card-featured {
        transform: none;
    }

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

    .pricing-card {
        padding: 30px 20px;
    }

    .price-amount {
        font-size: 2rem;
    }

    .tech-metrics {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 15px;
    }

    .tech-metrics {
        grid-template-columns: 1fr;
    }

    .case-results {
        flex-direction: column;
        gap: 15px;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #2563eb, #7c3aed);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #1d4ed8, #7c3aed);
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: spin 1s ease-in-out infinite;
}

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

/* 成功提示样式 */
.success-message {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.success-message i {
    font-size: 1.2rem;
}

/* 错误提示样式 */
.error-message {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.error-message i {
    font-size: 1.2rem;
}

/* 联系信息弹窗样式 */
.contact-info-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3000;
    animation: fadeIn 0.3s ease;
}

.contact-info-content {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 400px;
    width: 90%;
    animation: slideIn 0.3s ease;
}

.contact-info-content h3 {
    color: #1e293b;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #f8fafc;
    border-radius: 10px;
    transition: background 0.3s ease;
}

.contact-method:hover {
    background: #e2e8f0;
}

.contact-method i {
    color: #3b82f6;
    font-size: 1.2rem;
    width: 20px;
}

.contact-method span {
    color: #374151;
    font-weight: 500;
}

.close-contact-info {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 500;
    transition: transform 0.3s ease;
}

.close-contact-info:hover {
    transform: translateY(-2px);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}