/* SafeW SEO优化样式表 - 黑色紫色主题 */
/* 核心优化：精简、无冗余、高性能 */

/* CSS变量定义 - 黑色紫色主题 */
:root {
    --primary-color: #a855f7;
    --primary-hover: #9333ea;
    --primary-light: #c084fc;
    --secondary-color: #8b5cf6;
    --bg-color: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-card: #161616;
    --text-color: #f5f5f5;
    --text-secondary: #a3a3a3;
    --border-color: #262626;
    --shadow: 0 2px 8px rgba(168, 85, 247, 0.15);
    --shadow-hover: 0 4px 16px rgba(168, 85, 247, 0.3);
    --radius: 8px;
    --max-width: 1200px;
    --transition: all 0.3s ease;
}

/* 重置样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* 语言选择器 */
.language-selector {
    position: relative;
    display: inline-block;
}

.language-btn {
    background: var(--bg-secondary);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 8px 16px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.9rem;
    transition: var(--transition);
}

.language-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.language-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    min-width: 200px;
    max-height: 400px;
    overflow-y: auto;
    box-shadow: var(--shadow-hover);
    display: none;
    z-index: 1001;
}

.language-dropdown.show {
    display: block;
}

.language-option {
    padding: 10px 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.language-option:hover {
    background: var(--bg-secondary);
    color: var(--primary-color);
}

.language-option img {
    width: 20px;
    height: 14px;
    object-fit: cover;
}

/* Hero区域 */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a0a2e 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 50%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    text-align: left;
}

.hero-text {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-img {
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(168, 85, 247, 0.3),
                0 0 40px rgba(139, 92, 246, 0.2);
    transition: var(--transition);
    animation: float 6s ease-in-out infinite;
}

.hero-img:hover {
    transform: scale(1.05);
    box-shadow: 0 30px 80px rgba(168, 85, 247, 0.4),
                0 0 60px rgba(139, 92, 246, 0.3);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-color);
    line-height: 1.2;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.8;
}

.hero-btns {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--primary-color) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

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

.btn-download {
    background: var(--bg-secondary);
    color: var(--text-color);
    border: 1px solid var(--border-color);
    padding: 12px 24px;
}

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

.btn-large {
    padding: 18px 48px;
    font-size: 1.125rem;
}

/* 区块标题 */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    color: var(--text-color);
}

.section-desc {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 48px;
    font-size: 1.1rem;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

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

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

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

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

/* 下载中心 */
.download {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.download-card {
    background: var(--bg-card);
    padding: 32px 24px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

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

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

.download-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

/* 用户评价 */
.reviews {
    padding: 80px 0;
    background: var(--bg-color);
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.review-card {
    background: var(--bg-card);
    padding: 28px;
    border-radius: var(--radius);
    border-left: 4px solid var(--primary-color);
    border: 1px solid var(--border-color);
}

.review-text {
    color: var(--text-color);
    line-height: 1.8;
    margin-bottom: 16px;
    font-style: italic;
}

.review-author {
    color: var(--primary-color);
    font-weight: 600;
}

/* CTA区域 */
.cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: 2rem;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.125rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

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

.cta .btn-primary:hover {
    background: var(--bg-secondary);
}

/* 页脚 */
.footer {
    padding: 60px 0 24px;
    background: #0a0a0a;
    color: white;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 16px;
    color: white;
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
    text-align: center;
    color: var(--text-secondary);
}

.footer-bottom a {
    color: var(--text-secondary);
    text-decoration: none;
}

.footer-bottom a:hover {
    color: white;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

/* 图片懒加载占位 */
.lazyload {
    opacity: 0;
    transition: opacity 0.3s;
}

.lazyloaded {
    opacity: 1;
}

/* Google Translate 自定义样式 */
.goog-te-banner-frame {
    display: none !important;
}

body > .goog-te-banner-frame {
    display: none !important;
}

#google_translate_element {
    display: inline-block;
}

.goog-te-gadget {
    font-family: inherit !important;
    font-size: 0.9rem !important;
}

.goog-te-gadget-simple {
    background: var(--bg-secondary) !important;
    border: 1px solid var(--border-color) !important;
    border-radius: var(--radius) !important;
    padding: 8px 16px !important;
}

.goog-te-gadget-simple .goog-te-menu-value span {
    color: var(--text-color) !important;
}

.goog-te-gadget-simple .goog-te-menu-value span:first-child {
    color: var(--text-color) !important;
}

.goog-te-gadget-simple a.goog-te-menu2-item span {
    color: var(--text-color) !important;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }
    
    .hero {
        padding: 120px 0 60px;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: 40px;
        text-align: center;
    }
    
    .hero-text {
        align-items: center;
    }
    
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .features-grid,
    .download-grid,
    .reviews-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .hero-btns {
        flex-direction: column;
    }
}

/* 打印样式优化 */
@media print {
    .header,
    .hero-btns,
    .cta,
    .footer {
        display: none;
    }
    
    body {
        font-size: 12pt;
    }
}

/* 减少动画偏好 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}