/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #00f2ff;
    --secondary-color: #7b2ff7;
    --accent-color: #ff2e63;
    --bg-dark: #0a0a0a;
    --bg-card: #1a1a2e;
    --bg-card-hover: #252541;
    --text-primary: #ffffff;
    --text-secondary: #b8b8d1;
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-cyber: linear-gradient(135deg, #00f2ff 0%, #7b2ff7 100%);
    --shadow-glow: 0 0 30px rgba(0, 242, 255, 0.3);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ==================== 粒子背景 ==================== */
#particles-js {
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
    background: linear-gradient(180deg, #0a0a0a 0%, #1a1a2e 100%);
}

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 242, 255, 0.2);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: var(--shadow-glow);
}

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

.nav-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: bold;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-brand i {
    font-size: 2rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.nav-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 0;
}

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

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

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

/* ==================== Hero Section ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 0 50px;
    position: relative;
}

.hero-content {
    animation: fadeInUp 1s ease;
}

.glitch {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1rem;
    position: relative;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: glowPulse 2s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        filter: drop-shadow(0 0 10px rgba(0, 242, 255, 0.5));
    }
    50% {
        filter: drop-shadow(0 0 20px rgba(0, 242, 255, 0.8));
    }
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 3rem;
}

.btn {
    padding: 15px 40px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-cyber);
    color: white;
    box-shadow: 0 5px 20px rgba(0, 242, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 242, 255, 0.6);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--bg-dark);
    transform: translateY(-3px);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin-top: 4rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

/* ==================== Section 通用样式 ==================== */
section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    font-size: 3rem;
    text-align: center;
    margin-bottom: 1rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 4rem;
}

/* ==================== 功能特性 ==================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    transition: all 0.3s ease;
    border: 1px solid rgba(0, 242, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-cyber);
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 0;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary-color);
}

.feature-card:hover::before {
    opacity: 0.1;
}

.feature-card > * {
    position: relative;
    z-index: 1;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

.feature-tech {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tech-tag {
    background: rgba(0, 242, 255, 0.1);
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    border: 1px solid rgba(0, 242, 255, 0.3);
}

/* ==================== 技术架构 ==================== */
.tech-stack {
    background: rgba(26, 26, 46, 0.5);
}

.tech-diagram {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    margin-bottom: 4rem;
}

.tech-layer {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    width: 100%;
    max-width: 800px;
    border: 1px solid rgba(0, 242, 255, 0.2);
}

.tech-layer h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.tech-items {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.tech-item i {
    font-size: 2.5rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tech-item span {
    color: var(--text-secondary);
}

.tech-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

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

.highlight-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(0, 242, 255, 0.1);
    transition: all 0.3s ease;
}

.highlight-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
}

.highlight-card i {
    font-size: 2.5rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.highlight-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.highlight-card p {
    color: var(--text-secondary);
}

/* ==================== 下载区域 ==================== */
.download {
    background: var(--bg-dark);
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.download-card {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    border: 2px solid rgba(0, 242, 255, 0.2);
    transition: all 0.3s ease;
}

.download-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
    transform: translateY(-10px);
}

.download-icon {
    font-size: 4rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.download-card h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.version {
    color: var(--text-secondary);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.download-features {
    list-style: none;
    margin-bottom: 2rem;
    text-align: left;
}

.download-features li {
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

.download-features i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.btn-download {
    width: 100%;
    justify-content: center;
    margin-bottom: 1rem;
}

.download-note {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ==================== 视频教程 ==================== */
.tutorial-section {
    margin-bottom: 3rem;
}

.tutorial-card {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 20px;
    text-align: center;
    border: 2px solid rgba(251, 114, 153, 0.3);
    transition: all 0.3s ease;
    max-width: 500px;
    margin: 0 auto;
}

.tutorial-card:hover {
    border-color: #fb7299;
    box-shadow: 0 10px 30px rgba(251, 114, 153, 0.3);
    transform: translateY(-5px);
}

.tutorial-icon {
    font-size: 3rem;
    background: linear-gradient(45deg, #fb7299, #ff6b9d);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
}

.tutorial-card h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: #fb7299;
}

.tutorial-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.btn-tutorial {
    background: linear-gradient(45deg, #fb7299, #ff6b9d);
    color: white;
    box-shadow: 0 5px 20px rgba(251, 114, 153, 0.4);
    font-weight: 600;
    text-decoration: none;
    padding: 15px 40px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-tutorial:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(251, 114, 153, 0.6);
    text-decoration: none;
    color: white;
}

/* ==================== 安装指南 ==================== */
.installation-guide {
    background: var(--bg-card);
    padding: 3rem;
    border-radius: 20px;
    border: 1px solid rgba(0, 242, 255, 0.2);
}

.installation-guide h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.8rem;
}

.installation-guide h3 i {
    margin-right: 10px;
}

.guide-steps {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
}

.guide-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.step-number {
    width: 50px;
    height: 50px;
    background: var(--gradient-cyber);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.step-content h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.step-content code {
    background: rgba(0, 242, 255, 0.1);
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 10px;
    display: block;
    font-family: 'Courier New', monospace;
    border: 1px solid rgba(0, 242, 255, 0.3);
}

/* ==================== 支持我们 ==================== */
.support {
    background: rgba(26, 26, 46, 0.5);
}

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

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

.support-text h3 i {
    margin-right: 10px;
    color: var(--accent-color);
}

.support-reasons {
    list-style: none;
    margin-bottom: 2rem;
}

.support-reasons li {
    padding: 0.8rem 0;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.support-reasons i {
    color: var(--primary-color);
    margin-right: 1rem;
    width: 20px;
}

.support-thanks {
    color: var(--text-secondary);
    line-height: 1.8;
    font-size: 1.1rem;
}

.support-qr {
    display: flex;
    justify-content: center;
}

.qr-container {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    border: 2px solid rgba(0, 242, 255, 0.2);
    transition: all 0.3s ease;
}

.qr-container:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-glow);
    transform: scale(1.05);
}

.qr-container img {
    width: 250px;
    height: 250px;
    border-radius: 10px;
    margin-bottom: 1rem;
    border: 3px solid rgba(0, 242, 255, 0.3);
}

.qr-label {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.qr-desc {
    color: var(--text-secondary);
}

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

.method-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 1px solid rgba(0, 242, 255, 0.1);
    transition: all 0.3s ease;
}

.method-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.method-card i {
    font-size: 2.5rem;
    background: var(--gradient-cyber);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
}

.method-card h4 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.method-card p {
    color: var(--text-secondary);
}

/* ==================== 页脚 ==================== */
.footer {
    background: rgba(10, 10, 10, 0.95);
    padding: 3rem 0 1rem;
    border-top: 1px solid rgba(0, 242, 255, 0.2);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.footer-brand p {
    color: var(--text-secondary);
}

.footer-links h4,
.footer-contact h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-contact li {
    color: var(--text-secondary);
    padding: 0.3rem 0;
}

.footer-contact i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(0, 242, 255, 0.1);
    color: var(--text-secondary);
}

.footer-bottom i {
    color: var(--accent-color);
}

/* ==================== 回到顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-cyber);
    border: none;
    border-radius: 50%;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 5px 20px rgba(0, 242, 255, 0.4);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 242, 255, 0.6);
}

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

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .glitch {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 2rem;
    }
    
    .features-grid,
    .download-cards,
    .support-content {
        grid-template-columns: 1fr;
    }
    
    .guide-steps {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 2rem;
    }
}