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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #ffffff;
    --bg-light: #f9fafb;
    --border-color: #e5e7eb;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow);
}

.navbar {
    padding: 1rem 0;
}

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

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    font-weight: 700;
}

.logo .tagline {
    font-size: 0.8rem;
    color: var(--text-light);
    display: block;
    margin-top: -5px;
}

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

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-color);
    transition: all 0.3s ease;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 2;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

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

.floating-element:nth-child(1) {
    width: 100px;
    height: 100px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.floating-element:nth-child(2) {
    width: 150px;
    height: 150px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.floating-element:nth-child(3) {
    width: 80px;
    height: 80px;
    bottom: 20%;
    left: 20%;
    animation-delay: 4s;
}

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

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

section {
    padding: 5rem 0;
}

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

.section-title {
    font-size: 2.5rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-light);
}

.about {
    background: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

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

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

.about-image {
    position: relative;
}

.image-placeholder {
    background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 50%, #8b5cf6 100%);
    border-radius: 20px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.image-placeholder::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
}

.tech-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }
    100% {
        transform: translate(30px, 30px);
    }
}

.tech-circle {
    position: absolute;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    animation: rotateCircle 20s linear infinite;
}

.tech-circle-1 {
    width: 300px;
    height: 300px;
    animation-duration: 25s;
}

.tech-circle-2 {
    width: 250px;
    height: 250px;
    animation-duration: 20s;
    animation-direction: reverse;
}

.tech-circle-3 {
    width: 200px;
    height: 200px;
    animation-duration: 15s;
}

@keyframes rotateCircle {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.tech-center {
    position: relative;
    z-index: 2;
}

.tech-icon {
    width: 200px;
    height: 200px;
    animation: float 6s ease-in-out infinite;
}

.tech-icon svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.5));
}

.tech-particles {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: white;
    border-radius: 50%;
    opacity: 0.6;
    animation: particleFloat 4s ease-in-out infinite;
}

.particle-1 {
    top: 20%;
    left: 15%;
    animation-delay: 0s;
}

.particle-2 {
    top: 30%;
    right: 20%;
    animation-delay: 0.5s;
}

.particle-3 {
    bottom: 25%;
    left: 25%;
    animation-delay: 1s;
}

.particle-4 {
    bottom: 35%;
    right: 15%;
    animation-delay: 1.5s;
}

.particle-5 {
    top: 45%;
    left: 10%;
    animation-delay: 2s;
}

.particle-6 {
    top: 55%;
    right: 10%;
    animation-delay: 2.5s;
}

@keyframes particleFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-20px) scale(1.5);
        opacity: 1;
    }
}

.services {
    background: var(--bg-color);
}

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

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.service-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.solutions {
    background: var(--bg-light);
}

.solutions-container {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.solution-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2rem;
    align-items: start;
}

.solution-number {
    font-size: 4rem;
    font-weight: 700;
    color: rgba(37, 99, 235, 0.1);
    line-height: 1;
}

.solution-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.solution-content p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.solution-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.solution-features li {
    padding: 0.5rem 1rem;
    background: white;
    border-radius: 8px;
    color: var(--text-color);
    font-size: 0.95rem;
    box-shadow: var(--shadow);
}

.features {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.feature-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-item p {
    opacity: 0.9;
}

.contact {
    background: var(--bg-color);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    align-items: start;
}

.info-icon {
    font-size: 2rem;
    min-width: 50px;
}

.info-text h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--text-color);
}

.info-text p {
    color: var(--text-light);
}

.contact-form {
    background: var(--bg-light);
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group textarea {
    resize: vertical;
}

.footer {
    background: #1f2937;
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

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

.footer-section p {
    opacity: 0.8;
    line-height: 1.8;
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
    opacity: 0.8;
}

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

.footer-section a:hover {
    opacity: 1;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

@media (max-width: 968px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .about-content,
    .contact-content {
        grid-template-columns: 1fr;
    }

    .about-image {
        order: -1;
    }

    .stats {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 1rem;
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .hamburger {
        display: flex;
    }

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

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

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

    .solution-item {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .solution-number {
        display: none;
    }

    .solution-features {
        grid-template-columns: 1fr;
    }
}

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

    .hero-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }
}
.footer-bottom a {
    color: white;
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

.beian-number {
    color: white;
    text-decoration: none;
   }