/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 颜色变量 - 蓝色主题 */
    --primary-blue: #3b82f6;
    --primary-dark: #1e40af;
    --primary-light: #60a5fa;
    --cyan: #06b6d4;
    --cyan-light: #67e8f9;
    
    /* 背景色 */
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    
    /* 文字颜色 */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* 边框和分割线 */
    --border-color: #334155;
    --border-light: #475569;
    
    /* 渐变 */
    --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
    --gradient-glow: radial-gradient(circle at 50% 50%, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
    
    /* 阴影 */
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 60px rgba(59, 130, 246, 0.3);
    
    /* 字体 */
    --font-mono: 'Fira Code', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* 导航栏 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.nav {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo {
    font-size: 2rem;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

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

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

.social-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.social-link:hover {
    color: var(--primary-blue);
    background: rgba(59, 130, 246, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    z-index: 2;
    position: relative;
}

.hero-content {
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    padding: 8px 16px;
    border-radius: 24px;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-light);
    margin-bottom: 2rem;
    animation: float 3s ease-in-out infinite;
}

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

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.title-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    margin-bottom: 3rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 80px rgba(59, 130, 246, 0.4);
}

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

.btn-secondary:hover {
    background: var(--bg-card);
    border-color: var(--primary-blue);
    color: var(--primary-light);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 演示窗口 */
.hero-visual {
    position: relative;
    z-index: 2;
}

.demo-window {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: transform 0.3s ease;
}

.demo-window:hover {
    transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.window-header {
    background: var(--bg-darker);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control-red { background: #ef4444; }
.control-yellow { background: #eab308; }
.control-green { background: #22c55e; }

.window-title {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.window-content {
    padding: 16px;
    min-height: 300px;
}

.clipboard-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.clipboard-item {
    padding: 12px;
    background: var(--bg-darker);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.clipboard-item:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-blue);
    transform: translateX(4px);
}

.clipboard-item.active {
    background: rgba(59, 130, 246, 0.1);
    border-color: var(--primary-blue);
}

.item-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.item-content {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--text-primary);
}

/* 发光效果 */
.hero-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

.glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.6;
    animation: pulse 4s ease-in-out infinite;
}

.glow-blue {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.4) 0%, transparent 70%);
    top: 20%;
    left: 60%;
}

.glow-cyan {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.4) 0%, transparent 70%);
    top: 60%;
    left: 20%;
    animation-delay: 2s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

/* 功能特性 */
.features {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

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

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 使用场景 */
.scenarios {
    padding: 6rem 0;
    background: var(--bg-darker);
}

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

.scenario-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
}

.scenario-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.scenario-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.scenario-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.scenario-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 技术规格 */
.tech-specs {
    padding: 6rem 0;
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.spec-item {
    text-align: center;
    padding: 2rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    transition: all 0.3s ease;
}

.spec-item:hover {
    transform: translateY(-4px);
    border-color: var(--primary-blue);
    background: rgba(59, 130, 246, 0.05);
}

.spec-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.spec-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.spec-item p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 用户评价 */
.testimonials {
    padding: 6rem 0;
    background: var(--bg-darker);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.3s ease;
}

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

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.testimonial-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
}

.testimonial-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.testimonial-role {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.testimonial-content {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
    font-style: italic;
}

.testimonial-rating {
    color: #fbbf24;
    font-size: 1.125rem;
}

/* 下载区域 */
.download {
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.download-content {
    text-align: center;
    position: relative;
    z-index: 2;
    max-width: 1000px;
    margin: 0 auto;
}

.download-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.download-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.download-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.download-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    pointer-events: none;
}

/* 页脚 */
.footer {
    background: var(--bg-darker);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-brand h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-section h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .nav-social {
        display: none;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .scenarios-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .specs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero {
        padding-top: 100px;
        min-height: auto;
        padding-bottom: 4rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .features,
    .scenarios,
    .tech-specs,
    .testimonials,
    .download {
        padding: 4rem 0;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-blue);
}

/* 选择文本样式 */
::selection {
    background: rgba(59, 130, 246, 0.3);
    color: var(--text-primary);
}

/* 动画类 */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 额外的动画效果 */
.slide-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* 加载动画 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 鼠标跟随效果 */
.cursor-glow {
    position: fixed;
    width: 20px;
    height: 20px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: 9998;
    transition: transform 0.1s ease;
    opacity: 0;
}

.cursor-glow.active {
    opacity: 1;
}

/* 按钮悬停效果增强 */
.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

/* 滚动进度条 */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    background: var(--gradient-primary);
    z-index: 10000;
    transition: width 0.1s ease;
}

/* 优化的滚动条 */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-darker);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-blue), var(--cyan));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-light), var(--cyan-light));
}

/* 焦点状态优化 */
.btn:focus,
.nav-link:focus,
.social-link:focus {
    outline: 2px solid var(--primary-blue);
    outline-offset: 2px;
}

/* 下载功能样式 */
.download-buttons .btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 24px;
    min-width: 200px;
    justify-content: flex-start;
}

.btn-icon {
    font-size: 1.5rem;
}

.btn-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
}

.platform-name {
    font-size: 1rem;
    font-weight: 600;
}

.file-size {
    font-size: 0.75rem;
    opacity: 0.8;
}

/* 下载进度条 */
.download-progress {
    display: flex;
    flex-direction: column;
    gap: 8px;
    align-items: center;
    width: 100%;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-blue), var(--cyan));
    border-radius: 2px;
    transition: width 0.3s ease;
    width: 0%;
}

.progress-text {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* 下载按钮状态 */
.btn-download.downloading {
    opacity: 0.8;
    cursor: not-allowed;
}

.btn-download.downloading:hover {
    transform: none;
    box-shadow: var(--shadow-lg);
}

/* 版本信息样式 */
.version-info,
.system-requirements,
.download-stats {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    text-align: left;
}

.version-info h3,
.system-requirements h3,
.download-stats h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

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

.release-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.release-notes {
    font-style: italic;
    margin: 1rem 0;
}

.version-history-toggle {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 16px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    margin-top: 1rem;
}

.version-history-toggle:hover {
    background: var(--bg-card-hover);
    border-color: var(--primary-blue);
    color: var(--primary-light);
}

.version-history-content {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
}

.version-item {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.version-item:last-child {
    border-bottom: none;
}

.version-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.version-header h4 {
    color: var(--primary-blue);
    font-weight: 600;
}

.release-date {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* 系统要求样式 */
.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.requirement-item {
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s ease;
}

.requirement-item:hover {
    transform: translateY(-2px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.requirement-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.requirement-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 下载统计样式 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.stat-item {
    text-align: center;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-2px);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-glow);
}

.stat-item .stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-item .stat-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 下载通知样式 */
.download-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 10000;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.3s ease;
    box-shadow: var(--shadow-lg);
}

.download-notification.success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

.download-notification.error {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

.download-notification.info {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
}

/* 响应式设计 - 下载区域 */
@media (max-width: 768px) {
    .download-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .download-buttons .btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .btn-text {
        align-items: center;
    }
    
    .requirements-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .version-info,
    .system-requirements,
    .download-stats {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .version-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .download-notification {
        right: 10px;
        left: 10px;
        transform: translateY(-100%);
    }
    
    .download-notification.show {
        transform: translateY(0);
    }
}

/* 减少动画偏好支持 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .hero-glow,
    .download-glow {
        display: none;
    }
    
    .progress-fill {
        transition: none;
    }
    
    .download-notification {
        transition: none;
    }
}

/* 平滑滚动增强 */
@media (prefers-reduced-motion: no-preference) {
    html {
        scroll-behavior: smooth;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    :root {
        --bg-dark: #000000;
        --bg-card: #1a1a1a;
        --text-primary: #ffffff;
        --border-color: #666666;
    }
}