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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    padding-top: 70px; /* 为固定导航栏预留空间 */
}

/* 页面头部 */
.page-hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, #1e293b 0%, #334155 50%, #475569 100%);
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #fff, #e2e8f0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 1.3rem;
    color: #cbd5e1;
    line-height: 1.6;
    margin-bottom: 0;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar-fixed {
    position: fixed !important;
    top: 0 !important;
    z-index: 9999 !important;
}

.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-size: 24px;
    font-weight: 700;
    color: #fff;
}

.nav-logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: inherit;
    text-decoration: none;
    font-size: inherit;
    font-weight: inherit;
}

.nav-logo a:hover {
    color: #fff;
    text-decoration: none;
}

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

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

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

.nav-menu a:hover {
    color: #3b82f6;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    transition: width 0.3s ease;
}

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

.dropdown {
    position: relative;
}

.dropdown-content {
    position: absolute;
    top: 100%;
    right: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    min-width: 160px;
    border-radius: 8px;
    padding: 10px 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.dropdown:hover .dropdown-content {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-content a {
    display: block;
    padding: 10px 20px;
    color: #fff;
    text-decoration: none;
    transition: all 0.3s ease;
}

.dropdown-content a:hover {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.dropdown-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.1);
    margin: 8px 0;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: #fff;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅 */
.hero {
    min-height: calc(100vh - 70px); /* 减去导航栏高度 */
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #334155 100%);
    overflow: hidden;
}

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

.tech-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

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

.floating-icon {
    position: absolute;
    color: rgba(59, 130, 246, 0.3);
    font-size: 24px;
    animation: float 6s ease-in-out infinite;
}

.floating-icon:nth-child(1) {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-icon:nth-child(2) {
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-icon:nth-child(3) {
    bottom: 30%;
    left: 20%;
    animation-delay: 4s;
}

.floating-icon:nth-child(4) {
    top: 40%;
    right: 30%;
    animation-delay: 1s;
}

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

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: gradientShift 3s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
    margin: 40px 0;
    padding: 30px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 800;
    color: #3b82f6;
    margin-bottom: 5px;
}

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

.hero-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 40px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #3b82f6;
    border-color: #3b82f6;
}

.btn-secondary:hover {
    background: #3b82f6;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
}

/* 服务介绍 */
.services {
    padding: 100px 0;
    background: #f8fafc;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #1e293b, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.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: 30px;
}

.service-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
    text-decoration: none;
    color: inherit;
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 2rem;
    color: #fff;
}

.service-card h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
}

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

.service-card ul {
    list-style: none;
}

.service-card li {
    padding: 8px 0;
    color: #475569;
    position: relative;
    padding-left: 20px;
}

.service-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3b82f6;
    font-weight: bold;
}

/* 详情页面样式 */
.service-details {
    padding: 80px 0;
    background: #f8fafc;
}

.service-overview {
    text-align: center;
    margin-bottom: 80px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.service-overview h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: #1e293b;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.service-overview p {
    font-size: 1.2rem;
    color: #64748b;
    line-height: 1.8;
}

.service-features {
    margin-bottom: 80px;
}

.service-features h2 {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 50px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 25px;
    font-size: 1.8rem;
    color: #fff;
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
}

.feature-card p {
    color: #64748b;
    margin-bottom: 20px;
    line-height: 1.6;
}

.feature-card ul {
    list-style: none;
}

.feature-card li {
    padding: 8px 0;
    color: #475569;
    position: relative;
    padding-left: 25px;
    transition: all 0.2s ease;
}

.feature-card li:hover {
    color: #3b82f6;
    transform: translateX(5px);
}

.feature-card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3b82f6;
    font-weight: bold;
    font-size: 1.1rem;
}

/* 服务流程 */
.service-process {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: #fff;
    margin-bottom: 80px;
}

.service-process h2 {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 60px;
    color: #fff;
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 40px;
    left: 10%;
    right: 10%;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    z-index: 1;
}

.step {
    text-align: center;
    position: relative;
    z-index: 2;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 auto 25px;
    position: relative;
    z-index: 2;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
}

.step:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.4);
}

.step h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #fff;
}

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

/* 开发流程 - 统一样式 */
.development-process,
.quality-process,
.management-process {
    padding: 100px 0;
    background: #000;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.development-process::before,
.quality-process::before,
.management-process::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 40% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.development-process .section-header,
.quality-process .section-header,
.management-process .section-header {
    text-align: center;
    margin-bottom: 80px;
    position: relative;
    z-index: 2;
}

.development-process .section-header h2,
.quality-process .section-header h2,
.management-process .section-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
}

.development-process .section-header p,
.quality-process .section-header p,
.management-process .section-header p {
    font-size: 1.2rem;
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

.process-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.process-step {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    transition: all 0.4s ease;
    backdrop-filter: blur(10px);
    opacity: 0;
    animation: slideInUp 0.8s ease forwards;
}

.process-step:nth-child(1) { animation-delay: 0.1s; }
.process-step:nth-child(2) { animation-delay: 0.2s; }
.process-step:nth-child(3) { animation-delay: 0.3s; }
.process-step:nth-child(4) { animation-delay: 0.4s; }
.process-step:nth-child(5) { animation-delay: 0.5s; }
.process-step:nth-child(6) { animation-delay: 0.6s; }

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

.process-step:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(59, 130, 246, 0.3);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.process-step .step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 900;
    color: #fff;
    margin: 0 auto 25px;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
    transition: all 0.4s ease;
}

.process-step:hover .step-number {
    transform: scale(1.1) rotate(5deg);
    box-shadow: 0 15px 40px rgba(59, 130, 246, 0.6);
}

.process-step .step-content h3,
.process-step .step-content h4 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 15px;
    transition: all 0.3s ease;
}

.process-step:hover .step-content h3,
.process-step:hover .step-content h4 {
    color: #3b82f6;
}

.process-step .step-content p {
    color: #94a3b8;
    line-height: 1.6;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.process-step:hover .step-content p {
    color: #cbd5e1;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .process-timeline {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .process-step {
        padding: 30px 25px;
    }
    
    .process-step .step-number {
        width: 60px;
        height: 60px;
        font-size: 1.4rem;
    }
    
    .development-process .section-header h2,
    .quality-process .section-header h2,
    .management-process .section-header h2 {
        font-size: 2rem;
    }
}

/* 工作流程 */
.workflow {
    padding: 100px 0;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    color: #fff;
}

.workflow-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-top: 60px;
}

/* 服务优势 */
.service-advantages {
    padding: 80px 0;
    background: #fff;
}

.service-advantages h2 {
    text-align: center;
    font-size: 2.2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 50px;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.advantage-item {
    background: linear-gradient(135deg, #f8fafc 0%, #fff 100%);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    border: 1px solid #e2e8f0;
    position: relative;
    overflow: hidden;
}

.advantage-item::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(59, 130, 246, 0.05), transparent);
    transform: rotate(-45deg);
    transition: all 0.6s ease;
    opacity: 0;
}

.advantage-item:hover::before {
    opacity: 1;
    transform: rotate(-45deg) translate(50%, 50%);
}

.advantage-item:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    border-color: #3b82f6;
}

.advantage-item i {
    font-size: 3rem;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 25px;
    display: block;
    transition: all 0.3s ease;
}

.advantage-item:hover i {
    transform: scale(1.1) rotate(5deg);
}

.advantage-item h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
    transition: all 0.3s ease;
}

.advantage-item:hover h3 {
    color: #3b82f6;
}

.advantage-item p {
    color: #64748b;
    line-height: 1.6;
    transition: all 0.3s ease;
}

.advantage-item:hover p {
    color: #475569;
}

/* 优势特色 */
.advantages {
    padding: 100px 0;
    background: #f8fafc;
}

.advantage-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.advantage-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2.5rem;
    color: #fff;
}

.advantage-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
}

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

/* 成功案例 */
.cases {
    padding: 100px 0;
    background: #fff;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.case-card {
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.case-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.15);
}

.case-link {
    display: inline-flex;
    align-items: center;
    color: #3b82f6;
    text-decoration: none;
    font-weight: 500;
    margin-top: 15px;
    transition: color 0.3s ease;
}

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

.case-link i {
    margin-left: 5px;
    transition: transform 0.3s ease;
}

.case-link:hover i {
    transform: translateX(3px);
}

.case-content h3 a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s ease;
}

.case-content h3 a:hover {
    color: #3b82f6;
}

.case-image {
    height: 200px;
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 3rem;
}

.case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: #1e293b;
}

.case-content p {
    color: #64748b;
    line-height: 1.6;
    margin-bottom: 20px;
}

.case-tags {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.case-tags span {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* 技术栈 */
.tech-stack {
    padding: 100px 0;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #fff;
}

.tech-categories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.tech-category {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    padding: 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.tech-category h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #3b82f6;
}

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

.tech-items span {
    background: rgba(59, 130, 246, 0.2);
    color: #cbd5e1;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(59, 130, 246, 0.3);
    transition: all 0.3s ease;
}

.tech-items span:hover {
    background: rgba(59, 130, 246, 0.3);
    color: #fff;
    transform: translateY(-2px);
}

/* 页脚 */
.footer {
    background: #0f172a;
    color: #cbd5e1;
    padding: 60px 0 20px;
}

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

.footer-section h4 {
    color: #fff;
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-section ul {
    list-style: none;
}

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

.footer-section a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

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

.footer-logo img {
    width: 30px;
    height: 30px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #3b82f6;
    color: #fff;
    transform: translateY(-2px);
}

.social-media {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-media a {
    width: 40px;
    height: 40px;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #3b82f6;
    transition: all 0.3s ease;
}

.social-media a:hover {
    background: #3b82f6;
    color: #fff;
    transform: translateY(-2px);
}

.contact-list {
    list-style: none;
}

.contact-list li {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-list i {
    color: #3b82f6;
    width: 16px;
}

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: #64748b;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

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

/* 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: rgba(15, 23, 42, 0.95);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid,
    .advantages-grid,
    .cases-grid,
    .tech-categories {
        grid-template-columns: 1fr;
    }
    
    .workflow-steps {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .service-card,
    .advantage-card,
    .case-content {
        padding: 25px 20px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #2563eb, #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); }
}