/* 基础样式和变量 - 基于MakerWorld设计风格 */
:root {
    /* MakerWorld风格的颜色系统 */
    --primary-color: #0066FF;
    --primary-light: #007AFF;
    --secondary-color: #36B37E;
    --accent-color: #FF6B6B;
    --background-color: #F9FAFB;
    --white: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #4B5563;
    --border-color: #E5E7EB;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
    --card-shadow-hover: 0 4px 12px rgba(0, 102, 255, 0.08);
    --transition: all 0.2s ease-in-out;
    --border-radius: 8px;
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color), #2BB673);
    
    /* 响应式变量 */
    --navBarHeight: 60px;
    --footerHeight: 45px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Open Sans', 'Kreadon', sans-serif;
    background-color: var(--background-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    transition: opacity ease-in 0.2s;
}

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

/* 导航栏样式 - 基于MakerWorld简洁设计 */
header {
    background-color: var(--white);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.03);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--navBarHeight);
}

/* 移动端菜单默认隐藏 */
.mobile-menu {
    display: none;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.03);
}

.logo i {
    animation: bugPulse 2s infinite ease-in-out;
}

@keyframes bugPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    transition: var(--transition);
    font-size: 0.95rem;
    padding: 0.5rem 0;
}

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

.nav-buttons {
    display: flex;
    gap: 1rem;
}

/* 按钮样式 - 基于MakerWorld简约风格 */
.btn {
    display: inline-block;
    padding: 0.65rem 1.25rem;
    border-radius: var(--border-radius);
    font-weight: 500;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
    font-size: 0.9rem;
    font-family: 'Open Sans', sans-serif;
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: rgba(0, 102, 255, 0.05);
}

/* 英雄区域 - 基于MakerWorld清晰布局 */
.hero {
    background-color: var(--white);
    padding: 5rem 0;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    background: radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.05) 0%, transparent 70%);
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: -0.01em;
    font-family: 'Open Sans', sans-serif;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.6;
    font-weight: 400;
    font-family: 'Open Sans', sans-serif;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

/* 功能板块 - 现代卡片设计 */
.features {
    padding: 6rem 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.section-title h2 {
    font-size: 2.75rem;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-weight: 700;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-title p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-color);
}

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

.feature-icon {
    width: 50px;
    height: 50px;
    background: rgba(0, 102, 255, 0.05);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Open Sans', sans-serif;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
    font-family: 'Open Sans', sans-serif;
}

/* 项目展示 - 基于MakerWorld简约设计 */
.projects {
    padding: 4rem 0;
    background-color: var(--white);
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
}

.project-card:hover {
    box-shadow: var(--card-shadow-hover);
}

.project-image {
    width: 100%;
    height: 180px;
    background: linear-gradient(135deg, #F9FAFB, #F3F4F6);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 1.25rem;
    position: relative;
    overflow: hidden;
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Open Sans', sans-serif;
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    line-height: 1.6;
    font-size: 0.95rem;
    font-family: 'Open Sans', sans-serif;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    font-size: 0.95rem;
}

.project-link i {
    transition: var(--transition);
}

.project-link:hover {
    text-decoration: underline;
}

.project-link:hover i {
    transform: translateX(5px);
}

/* 服务器链接区域 - 简约设计 */
.server-section {
    padding: 4rem 0;
    background-color: var(--background-color);
    position: relative;
}

.server-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--card-shadow);
    text-align: center;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
    z-index: 1;
}

.server-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--primary-color);
}

.server-card h2 {
    font-size: 1.75rem;
    margin-bottom: 1.25rem;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Open Sans', sans-serif;
}

.server-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    font-family: 'Open Sans', sans-serif;
}

.server-ip {
    display: inline-block;
    background-color: rgba(0, 102, 255, 0.05);
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    padding: 1rem 2rem;
    border-radius: 8px;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 2rem;
    font-family: 'Open Sans', sans-serif;
}

/* 其他链接区域 - 交互式卡片 */
.links-section {
    padding: 6rem 0;
    background-color: var(--white);
}

.links-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.link-card {
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.link-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-color);
}

.link-card-icon {
    width: 40px;
    height: 40px;
    background: rgba(0, 102, 255, 0.05);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
    color: var(--primary-color);
    font-size: 1.25rem;
}

.link-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'Open Sans', sans-serif;
}

.link-card p {
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
    font-size: 0.9rem;
    line-height: 1.5;
    font-family: 'Open Sans', sans-serif;
}

/* 页脚 - 基于MakerWorld简约设计 */
footer {
    background-color: var(--white);
    padding: 4rem 0;
    position: relative;
    border-top: 1px solid var(--border-color);
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0.3;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2.5rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
    margin-bottom: 1.5rem;
}

.footer-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 2rem;
}

.footer-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-family: 'Open Sans', sans-serif;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.95rem;
    font-family: 'Open Sans', sans-serif;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius);
    background-color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border-color);
}

.copyright {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-family: 'Open Sans', sans-serif;
}

/* 移动端响应式设计 */
@media (max-width: 1200px) {
    .container {
        padding: 0 2rem;
    }
    
    .nav-links {
        gap: 1.5rem;
    }
    
    .hero-content h1 {
        font-size: 3.5rem;
    }
}

@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    
    .nav-buttons {
        display: flex;
        gap: 1rem;
    }
    
    /* 默认在桌面端隐藏汉堡按钮 */
    .hamburger {
        display: none;
        cursor: pointer;
        font-size: 1.5rem;
        color: var(--text-primary);
    }
    
    /* 在768px以下的移动设备上显示汉堡按钮 */
    @media (max-width: 768px) {
        .hamburger {
            display: block;
        }
    }
    
    .hero h1 {
        font-size: 3rem;
    }
    
    .feature-grid,
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }
    
    .nav-buttons {
        display: none;
    }
    
    /* 移动端菜单 */
    .mobile-menu {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background-color: var(--text-primary);
        z-index: 1000;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        overflow-y: auto;
    }
    
    .mobile-menu.active {
        transform: translateX(0);
    }
    
    .mobile-menu-content {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        height: 100%;
        padding: 1.5rem;
    }
    
    .mobile-menu-close {
        position: absolute;
        top: 1.5rem;
        right: 1.5rem;
        font-size: 1.25rem;
        color: var(--white);
        cursor: pointer;
    }
    
    .mobile-menu-links {
        list-style: none;
        text-align: center;
    }
    
    .mobile-menu-links li {
        margin-bottom: 1.5rem;
    }
    
    .mobile-menu-links a {
        color: var(--white);
        text-decoration: none;
        font-size: 1.25rem;
        font-weight: 500;
        transition: var(--transition);
        font-family: 'Open Sans', sans-serif;
    }
    
    .mobile-menu-links a:hover {
        color: var(--primary-color);
    }
    
    .mobile-menu-buttons {
        margin-top: 2rem;
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }
}

/* 移动端响应式设计 - 继续 */
@media (max-width: 768px) {
    .hero {
        padding: 5rem 0;
    }
    
    .hero h1 {
        font-size: 2rem;
        margin-bottom: 1.5rem;
    }
    
    .section-title h2 {
        font-size: 1.75rem;
        margin-bottom: 1rem;
    }
    
    .section-title p {
        font-size: 1rem;
    }
    
    .features,
    .links-section {
        padding: 6rem 0;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 1rem;
    }
    
    .nav-buttons {
        display: none;
    }
    
    .hero h1 {
        font-size: 1.75rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 0.75rem;
        max-width: 280px;
        margin: 0 auto;
    }
    
    .feature-card,
    .project-card {
        padding: 1.5rem;
    }
    
    .section-title h2 {
        font-size: 1.5rem;
    }
    
    .section-title p {
        font-size: 0.9rem;
    }
    
    .server-card {
        padding: 1.75rem;
    }
    
    .server-card h2 {
        font-size: 1.5rem;
    }
    
    .footer-grid {
        gap: 2rem;
    }
    
    .footer-title {
        font-size: 1rem;
    }
}

/* 触摸设备优化 */
.touch-optimized .btn:active {
    transform: scale(0.98);
}