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

/* 根元素变量 */
:root {
    --primary-color: #4285F4;
    --secondary-color: #34A853;
    --danger-color: #EA4335;
    --warning-color: #FBBC04;
    --text-primary: #202124;
    --text-secondary: #5f6368;
    --text-tertiary: #80868b;
    --background-primary: #ffffff;
    --background-secondary: #f8f9fa;
    --background-dark: #1a1a1a;
    --border-color: #e8eaed;
    --shadow-light: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-medium: 0 4px 12px rgba(0,0,0,0.15);
    --shadow-heavy: 0 8px 24px rgba(0,0,0,0.2);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

/* 基础样式 */
body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-primary);
    overflow-x: hidden;
}

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    height: 64px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    text-decoration: none;
}

.nav-logo img {
    width: 32px;
    height: 32px;
}

.nav-menu {
    display: flex;
    gap: 32px;
}

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

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

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -16px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
    border-radius: 1px;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-github {
    color: var(--text-secondary);
    transition: var(--transition);
}

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

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, #000000 0%, #505050 100%);
    color: white;
    overflow: hidden;
    padding-top: 64px; /* 添加顶部内边距，避免被导航栏遮挡 */
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
}

.hero-grid {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(255,255,255,0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.hero-logo {
    background: linear-gradient(45deg, #4285F4, #34A853);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    color: white;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 48px;
    opacity: 0.9;
}

/* 浏览器支持 */
.browser-support {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* 固定四列，一排显示 */
    gap: 16px;
    margin-bottom: 48px;
    max-width: 800px; /* 限制最大宽度 */
    margin-left: auto;
    margin-right: auto;
}

.browser-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none; /* 移除链接下划线 */
    color: inherit; /* 继承文字颜色 */
}

.browser-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.browser-item img {
    width: 32px;
    height: 32px;
}

.browser-item span {
    font-weight: 500;
}

/* 安装链接 */
.install-links {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 64px;
    flex-wrap: wrap;
}

.install-link {
    padding: 12px 24px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.install-link.primary:hover {
    background: #3367d6;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.install-link.secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.install-link.secondary:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* 产品预览 */
.product-preview {
    max-width: 1400px; /* 进一步增大最大宽度 */
    margin: 0 auto;
    width: 90%; /* 使用百分比宽度，更灵活 */
}

.preview-container {
    perspective: 1200px; /* 增加透视距离 */
}

.preview-window {
    background: #2d2d2d;
    border-radius: 16px; /* 增大圆角 */
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4); /* 进一步增强阴影 */
    transform: rotateX(2deg) rotateY(-1deg); /* 进一步减少倾斜角度，让图片更平 */
    transition: var(--transition);
    border: 2px solid #555; /* 调整边框颜色和厚度 */
}

.preview-window:hover {
    transform: rotateX(0deg) rotateY(0deg) scale(1.01); /* 减小缩放比例 */
    box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}

.window-controls {
    display: flex;
    gap: 8px;
    padding: 12px 16px;
    background: #1a1a1a;
}

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

.control.close { background: #ff5f57; }
.control.minimize { background: #ffbd2e; }
.control.maximize { background: #28ca42; }

.address-bar {
    display: flex;
    align-items: center;
    padding: 8px 16px;
    background: #3c3c3c;
    gap: 16px;
}

.address-input {
    flex: 1;
    background: #2d2d2d;
    border: 1px solid #555;
    border-radius: 6px;
    padding: 8px 12px;
    color: #ccc;
    display: flex;
    align-items: center;
    gap: 8px;
}

.browser-actions {
    display: flex;
    gap: 12px;
    color: #ccc;
}

.preview-content {
    background: none; /* 移除背景色 */
    min-height: auto; /* 自适应高度 */
    padding: 0; /* 移除内边距 */
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow: hidden; /* 确保图片不会溢出 */
}

/* 预览内容图片样式 */
.preview-content.image-mode {
    padding: 0;
    background: none;
    min-height: auto;
}

.preview-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 0;
    object-fit: cover; /* 确保图片完美填充 */
    max-width: none; /* 移除最大宽度限制 */
}

.preview-image-placeholder {
    width: 100%;
    height: 675px; /* 按照1920:1080比例调整高度 */
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    text-align: center;
    flex-direction: column;
    gap: 16px;
}

.placeholder-icon {
    font-size: 4rem;
    opacity: 0.7;
}

.placeholder-text {
    font-weight: 500;
    opacity: 0.9;
}

.time-display {
    font-size: 4rem;
    font-weight: 200;
    color: white;
    margin-bottom: 24px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.search-box {
    width: 100%;
    max-width: 400px;
    margin-bottom: 32px;
}

.search-box input {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-radius: 24px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    outline: none;
}

.widgets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 16px;
    width: 100%;
    max-width: 600px;
    margin-bottom: 24px;
}

.widget {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 16px;
    text-align: center;
    color: var(--text-primary);
    transition: var(--transition);
}

.widget:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.widget-header {
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.weather-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.temp {
    font-size: 1.5rem;
    font-weight: 600;
}

.calendar-date {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

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

.day {
    font-size: 1.5rem;
    font-weight: 600;
}

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

.bookmark-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.bookmark-item {
    font-size: 0.75rem;
    padding: 2px 4px;
    background: var(--background-secondary);
    border-radius: 4px;
}

.quick-apps {
    display: flex;
    gap: 16px;
    margin-top: auto;
}

.app-icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    cursor: pointer;
    transition: var(--transition);
}

.app-icon:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}

/* 功能特性 */
.features {
    padding: 80px 0;
    background: var(--background-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 64px;
    color: var(--text-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background: var(--background-primary);
    padding: 32px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

.feature-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 下载安装 */
.download {
    padding: 80px 0;
    background: var(--background-primary);
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.download-card {
    background: var(--background-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
    position: relative;
}

.download-card.recommended {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-medium);
}

.download-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.card-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 4px 16px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 500;
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.card-header p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-weight: 500;
    transition: var(--transition);
}

.btn-download:hover {
    background: #3367d6;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.download-card:not(.recommended) .btn-download {
    background: var(--background-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.download-card:not(.recommended) .btn-download:hover {
    background: var(--border-color);
}

/* 用户评价 */
.testimonials {
    padding: 80px 0;
    background: var(--background-secondary);
}

/* 支持页面 */
.support {
    padding: 80px 0;
    background: var(--background-primary);
}

.support-content {
    max-width: 1000px;
    margin: 0 auto;
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
    margin-bottom: 48px;
}

.support-card {
    background: var(--background-secondary);
    padding: 24px;
    border-radius: var(--border-radius);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.support-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.support-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.support-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.support-card p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.support-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.support-link:hover {
    color: #3367d6;
}

.support-faq {
    background: var(--background-secondary);
    padding: 32px;
    border-radius: var(--border-radius);
}

.support-faq h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.faq-item {
    padding: 16px;
    background: var(--background-primary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.faq-item h4 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.faq-item p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* 关于页面 */
.about {
    padding: 80px 0;
    background: var(--background-secondary);
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-story {
    margin-bottom: 48px;
    text-align: center;
}

.about-story h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.about-story p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.about-mission {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 32px;
    border-radius: var(--border-radius);
    text-align: center;
    margin-bottom: 48px;
}

.about-mission h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.about-mission p {
    font-size: 1.125rem;
    line-height: 1.6;
}

.about-team {
    margin-bottom: 48px;
}

.about-team h3 {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--text-primary);
    text-align: center;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.team-member {
    background: var(--background-primary);
    padding: 24px;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.member-avatar {
    font-size: 3rem;
    margin-bottom: 16px;
}

.team-member h4 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.team-member p {
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.about-stats {
    background: var(--background-primary);
    padding: 32px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 24px;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.testimonial-card {
    background: var(--background-primary);
    padding: 32px;
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.testimonial-rating {
    font-size: 1.25rem;
    margin-bottom: 16px;
}

.testimonial-card p {
    font-style: italic;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.testimonial-author strong {
    color: var(--text-primary);
    font-weight: 600;
}

.testimonial-author span {
    color: var(--text-tertiary);
    font-size: 0.875rem;
    margin-left: 8px;
}

/* 页脚 */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 40px 0 24px;
}

.footer-simple {
    text-align: center;
    margin-bottom: 32px;
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: white;
}

.footer-links-simple {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.footer-links-simple a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
    font-size: 0.9rem;
    padding: 4px 8px;
    border-radius: 4px;
}

.footer-links-simple a:hover {
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-bottom p {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero-title {
        font-size: 2.5rem;
        flex-direction: column;
        gap: 8px;
    }
    
    .browser-support {
        grid-template-columns: repeat(2, 1fr); /* 移动端显示两列 */
        gap: 12px;
    }
    
    .install-links {
        flex-direction: column;
        align-items: center;
    }
    
    .time-display {
        font-size: 3rem;
    }
    
    .widgets-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quick-apps {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .features-grid,
    .download-cards,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links-simple {
        gap: 12px 16px;
        font-size: 0.85rem;
    }
    
    .footer-links-simple a {
        font-size: 0.85rem;
        padding: 3px 6px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-content {
        padding: 0 16px;
    }
    
    .preview-content {
        padding: 0; /* 移动端也不要内边距 */
        min-height: auto; /* 自适应高度 */
    }
    
    .preview-image-placeholder {
        height: 300px; /* 移动端占位符高度 */
    }
    
    .preview-image {
        width: 100%; /* 移动端图片也占满宽度 */
        height: auto;
    }
    
    .browser-support {
        grid-template-columns: 1fr; /* 超小屏幕单列显示 */
        gap: 8px;
    }
    
    .browser-item {
        padding: 12px;
    }
    
    .browser-item span {
        font-size: 0.875rem;
    }
    
    .feature-card,
    .download-card,
    .testimonial-card {
        padding: 24px;
    }
}

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

.feature-card,
.download-card,
.testimonial-card {
    animation: fadeInUp 0.6s ease-out;
}

/* 滚动行为 */
html {
    scroll-behavior: smooth;
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --text-primary: #e8eaed;
        --text-secondary: #9aa0a6;
        --text-tertiary: #80868b;
        --background-primary: #202124;
        --background-secondary: #303134;
        --border-color: #3c4043;
    }
    
    .navbar {
        background: rgba(32, 33, 36, 0.95);
    }
    
    .preview-window {
        background: #1a1a1a;
    }
}