:root {
    --primary-color: #2962ff;
    --secondary-color: #0039cb;
    --text-color: #333;
    --light-text: #fff;
    --background: #f5f5f5;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

/* Header Styles */
header {
    background: rgba(255, 255, 255, 0.95);
    position: fixed;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: clamp(0.75rem, 2.2vw, 1.15rem);
    font-weight: bold;
    color: var(--primary-color);
    line-height: 1.3;
    max-width: min(100%, 22em);
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    padding: 0.5rem 1rem;
    transition: color 0.3s ease;
}

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

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--light-text);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, 
        rgba(255, 255, 255, 0.1) 25%, 
        transparent 25%, 
        transparent 50%, 
        rgba(255, 255, 255, 0.1) 50%, 
        rgba(255, 255, 255, 0.1) 75%, 
        transparent 75%, 
        transparent
    );
    background-size: 100px 100px;
    animation: backgroundMove 30s linear infinite;
    opacity: 0.1;
}

@keyframes backgroundMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.hero-content {
    padding: 2rem;
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* Buttons */
.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--light-text);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-3px);
}

.cta-button.is-coming-soon {
    cursor: default;
    pointer-events: none;
}

.cta-button.is-coming-soon:hover {
    transform: none;
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    background: var(--background);
}

.features h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

/* Download Section */
.download {
    padding: 5rem 2rem;
    text-align: center;
    background: white;
}

.download h2 {
    margin-bottom: 1rem;
}

.download p {
    margin-bottom: 2rem;
}

.download .download-cta {
    background: var(--primary-color);
    color: var(--light-text);
}

/* Footer */
footer {
    background: #333;
    color: var(--light-text);
    padding: 3rem 2rem 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.copyright {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.icp-beian {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    opacity: 0.95;
}

.icp-beian a {
    color: var(--light-text);
    text-decoration: none;
}

.icp-beian a:hover {
    text-decoration: underline;
}

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

    nav ul {
        margin-top: 1rem;
    }

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

#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.animate-text {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
}

.animate-text-delay {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.3s;
}

.animate-button {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}