:root {
    --primary-color: #2196F3;    /* 更现代的蓝色 */
    --secondary-color: #1976D2;  /* 深蓝色 */
    --accent-color: #FFC107;     /* 金色强调色 */
    --text-color: #2c3e50;      /* 更柔和的文字颜色 */
    --light-bg: #f8f9fa;        /* 更柔和的背景色 */
    --white: #ffffff;
    --border-color: #e9ecef;
}

* {
    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);
    padding-top: 70px;
}

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

/* 导航栏样式优化 */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    height: 70px;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Logo 动效 */
.logo img {
    height: 36px;
    transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
    filter: drop-shadow(0 0 0 rgba(33, 150, 243, 0));
}

.logo a:hover img {
    transform: translateY(-3px);
    filter: drop-shadow(0 6px 12px rgba(33, 150, 243, 0.3));
    cursor: pointer;
}

.logo a:active img {
    transform: translateY(-1px);
    filter: drop-shadow(0 3px 6px rgba(33, 150, 243, 0.2));
}

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

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 16px;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.navbar .logo .system-name {
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--text-color);
    letter-spacing: 0.5px;
}

/* 主横幅样式优化 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 100px 0 40px;
    margin-top: -70px;
    text-align: center;
    position: relative;
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--white);
}

.hero p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 40px;
    color: rgba(255, 255, 255, 0.9);
}

.cta-button {
    background: var(--accent-color);
    color: var(--text-color);
    padding: 15px 35px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: 40px;
    display: inline-block;
    position: relative;
    z-index: 2;
}

.cta-button:hover {
    background: #FFD54F;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

/* 功能特点样式优化 */
.features {
    background: var(--light-bg);
    padding: 80px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.feature-card {
    background: var(--white);
    border-radius: 15px;
    padding: 35px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border: none;
    text-align: center;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.feature-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    background: var(--light-bg);
    width: 80px;
    height: 80px;
    line-height: 80px;
    border-radius: 50%;
    display: inline-block;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin: 20px 0;
    color: var(--text-color);
}

.feature-card p {
    color: #666;
    font-size: 1rem;
    line-height: 1.6;
}

/* 下载部分样式 */
.download {
    padding: 80px 0;
}

.version-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.version-card {
    background: var(--white);
    border-radius: 15px;
    padding: 35px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border: none;
    text-align: center;
    transition: all 0.3s ease;
}

.version-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.version-card h3 {
    font-size: 1.6rem;
    color: var(--text-color);
    margin-bottom: 15px;
}

.version-features {
    font-size: 1.1rem;
    color: #555;
    list-style: none;
    margin: 20px 0;
}

.version-features li {
    margin: 15px 0;
    padding-left: 25px;
    position: relative;
}

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

.download-button {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    margin-top: 20px;
}

/* 页脚样式优化 */
.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer h4 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
    line-height: 1.8;
}

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

.social-links a {
    color: var(--white);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-links a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 25px;
    }
}

.title-bar {
    display: flex;
    align-items: center;
    gap: 8px;
}

.title-bar img {
    width: 24px;
    height: 24px;
    object-fit: contain;
}

/* 优势部分样式 */
.advantages {
    background: var(--white);
    padding: 80px 0;
    border-top: 1px solid var(--border-color);
}

.advantage-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.advantage-item {
    background: var(--light-bg);
    border-radius: 15px;
    padding: 35px;
    text-align: center;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.advantage-item i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    background: var(--white);
    width: 80px;
    height: 80px;
    line-height: 80px;
    border-radius: 50%;
    display: inline-block;
}

.advantage-item h3 {
    font-size: 1.4rem;
    margin: 20px 0;
    color: var(--text-color);
}

.advantage-item p {
    color: #666;
    font-size: 1rem;
    line-height: 1.6;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .advantage-list {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .advantage-list {
        grid-template-columns: 1fr;
    }
    
    .advantage-item {
        padding: 25px;
    }
}

/* 主横幅轮播样式 */
.hero-slider {
    position: relative;
    height: 200px;
    margin-bottom: 0;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    visibility: hidden;
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 80px;
    padding-bottom: 0;
    position: relative;
    z-index: 1;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: var(--white);
    transform: scale(1.2);
}

/* 页脚内容布局 */
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 30px;
}

/* 二维码部分样式 */
.qr-section {
    flex: 0 0 auto; /* 防止二维码部分被拉伸 */
    text-align: center;
}

.qr-code {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.qr-code img {
    border-radius: 8px;
    /* 移除白色背景和内边距 */
    /* background: white; */
    /* padding: 5px; */
}

.qr-code p {
    font-size: 0.9rem;
    margin: 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .qr-section {
        margin-top: 20px;
    }
}