:root {
    --primary-color: #2563eb;
    --secondary-color: #4f46e5;
    --accent-color: #06b6d4;
    --text-color: #1e293b;
    --bg-color: #ffffff;
    --gradient-start: #2563eb;
    --gradient-end: #4f46e5;
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.5;
    color: var(--text-color);
    background-color: var(--bg-color);
}

header {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

header:hover {
    box-shadow: 0 4px 12px -1px rgba(0, 0, 0, 0.15);
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* .logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    transition: transform 0.3s ease;
} */

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.75rem;
    font-weight: 800;
    text-decoration: none;  /* 移除链接下划线 */
    transition: transform 0.3s ease;
}

.logo::after {
    display: none;  /* 禁用下划线效果 */
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 12px;  /* 添加圆角 */
}

.logo-text {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}


nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}
nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

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

nav a:hover::after,
nav a.active::after {
    width: 100%;
}

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

main {
    margin-top: 80px;
    min-height: calc(100vh - 160px);
}

/* Hero Section Styles */
.hero {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    padding: 6rem 0rem;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    max-width: 1200px;  
    margin: 0 auto;    
    position: relative;
    z-index: 1;
}

.hero-wrapper {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    padding: 0 2rem;
    /* 添加左右内边距 */
}

.hero-content {
    flex: 1;
    max-width: 600px;
    animation: fadeInUp 1s ease;
    position: relative;  /* 添加这行 */
    z-index: 2; 
}

.hero-image {
    flex: 1;
    max-width: 500px;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    animation: fadeInRight 1s ease 0.3s backwards;
}

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

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

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    animation: pulse 8s infinite;
    z-index: 0;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

.hero p {
    font-size: 1.5rem;
    opacity: 0.9;
    margin-bottom: 2rem;
}

.hero-cta {
    margin-top: 2rem;
    z-index: 1000 !important;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    cursor: pointer;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.2);
}

/* Features Section Styles */
.features {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

.feature-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.feature-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.feature-card h3 {
    padding: 1.5rem;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.feature-card p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-color);
}

/* Services Section Styles */
.services {
    padding: 6rem 2rem;
    background: #f8fafc;
}

.services h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.service-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

.service-card p {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.service-features {
    list-style: none;
    margin-top: 1rem;
}

.service-features li {
    padding: 0.5rem 0;
    color: var(--text-color);
    position: relative;
    padding-left: 1.5rem;
}

.service-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* Cases Section Styles */
.cases {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.cases h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

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

.case-card {
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.case-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.case-card h3 {
    padding: 1.5rem 1.5rem 0.5rem;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.case-card p {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-color);
}

/* About Page Styles */
.about {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
}

.about h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.about-content {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.about-image {
    width: 100%;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 2rem;
}

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

.about-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
}

.tech-stack {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.tech-item {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.tech-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.tech-item ul {
    list-style: none;
}

.tech-item li {
    padding: 0.5rem 0;
    color: var(--text-color);
    position: relative;
    padding-left: 1.5rem;
}

.tech-item li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

.timeline {
    margin: 3rem 0;
}

.timeline-item {
    display: grid;
    grid-template-columns: 150px 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #e2e8f0;
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
}

.timeline-content h3 {
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

/* Contact Page Styles */
.contact {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 2rem;
}

.contact h1 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.info-item {
    padding: 2rem;
    background: #f8fafc;
    border-radius: 12px;
    transition: all 0.3s ease;
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.info-item h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.info-item p {
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

/* Footer Styles */
footer {
    text-align: center;
    padding: 3rem 2rem;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    margin-top: 4rem;
}

footer p {
    opacity: 0.9;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }

    50% {
        transform: scale(1.5);
        opacity: 0.2;
    }

    100% {
        transform: scale(1);
        opacity: 0.5;
    }
}



/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    nav {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .logo-img {
        height: 32px;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 4rem 1rem;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero p {
        font-size: 1.25rem;
    }

    .hero-image {
        max-width: 100%;
    }

    .about,
    .contact {
        padding: 1rem;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }

    .contact-info {
        padding: 1rem;
    }

    .info-item {
        padding: 1.5rem;
    }
}