/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* 全局链接样式 */
a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

a:hover {
    color: #0078d7;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

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

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: #0078d7;
    color: white;
}

.btn-primary:hover {
    background-color: #005a9e;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: #0078d7;
    border: 1px solid #0078d7;
}

.btn-outline:hover {
    background-color: #0078d7;
    color: white;
}

/* 标题样式 */
.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: #2c3e50;
    margin-bottom: 10px;
    text-align: center;
}

.section-subtitle {
    font-size: 1.2rem;
    color: #64748b;
    text-align: center;
    margin-bottom: 40px;
}

/* 顶部区域 */
.hero {
    position: relative;
    height: 500px;
    color: rgb(0, 0, 0); /* 字颜色 */
    display: flex;
    align-items: center;
    overflow: hidden;
}



.hero-content {
    position: relative;
    z-index: 2; /* 保证标题和按钮在最上层 */
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.hero h2 {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 30px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.login-button {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 2;
}

/* 背景切换控制 */
.bg-controls {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    display: flex;
    gap: 10px;
}

.bg-control-btn {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.bg-control-btn.active {
    background-color: white;
    transform: scale(1.3);
}

/* 轮播控制按钮 */
.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2;
    width: 50px;
    height: 50px;
    background-color: rgba(0, 0, 0, 0.3);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.carousel-control:hover {
    background-color: rgba(0, 0, 0, 0.5);
}

.carousel-prev {
    left: 20px;
}

.carousel-next {
    right: 20px;
}

/* 粒子效果容器 */
#particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}



/* 核心服务区域 */
.core-services {
    padding: 80px 0;
    background-color: white;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.service-card {
    background-color: #f8fafc;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.1);
}

.service-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 25px;
    border-radius: 12px;
    background-color: #e6f0fa;
    display: flex;
    align-items: center;
    justify-content: center;
}

.service-icon img {
    max-width: 80px;
    max-height: 80px;
    object-fit: contain;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 15px;
}

.service-desc {
    color: #64748b;
    font-size: 1rem;
}

/* 正版选购区域 */
.purchase-section {
    padding: 80px 0;
    background-color: #f8fafc;
}

.purchase-container {
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    padding: 40px;
}

.version-selector {
    margin-bottom: 30px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
}

.version-selector label {
    font-size: 1.1rem;
    font-weight: 500;
    color: #2c3e50;
}

.version-selector select {
    padding: 10px 15px;
    border-radius: 6px;
    border: 1px solid #e2e8f0;
    font-size: 1rem;
    width: 200px;
    background-color: white;
}

.version-selector .btn {
    margin-left: auto;
}

/* 密钥选购区域 */
.keys-section {
    margin-top: 30px;
}

.keys-section h3 {
    font-size: 1.3rem;
    color: #2c3e50;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.keys-section h3::before {
    content: "🔑";
    margin-right: 8px;
}

.key-carousel {
    height: 250px;
    position: relative;
    overflow: hidden;
    border: 1px solid #f1f5f9;
    border-radius: 8px;
}

.key-items {
    position: absolute;
    width: 100%;
    transition: transform 0.5s ease-in-out;
}

.key-item {
    padding: 15px;
    border-bottom: 1px solid #f1f5f9;
}

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

.key-title {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: #2c3e50;
}

.key-code {
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    padding: 10px;
    background-color: #f8fafc;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border: 1px solid #e2e8f0;
}

.key-visible {
    color: #333;
}

.key-hidden {
    color: #999;
    letter-spacing: 2px;
}

/* Windows差异区域 */
.version-comparison {
    padding: 80px 0;
    background-color: white;
}

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 30px;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
}

.comparison-table th,
.comparison-table td {
    padding: 15px 20px;
    text-align: left;
    border-bottom: 1px solid #e2e8f0;
}

.comparison-table th {
    background-color: #f8fafc;
    font-weight: 600;
    color: #2c3e50;
    position: sticky;
    top: 0;
}

.comparison-table tr:last-child td {
    border-bottom: none;
}

.comparison-table tr:hover {
    background-color: #f8fafc;
}

.comparison-table tr:nth-child(2) {
    background-color: #f0f7ff;
}

/* 设备信息区域 */
.device-info {
    padding: 80px 0;
    background-color: #f8fafc;
}

.info-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
}

.info-title {
    font-size: 2rem;
    font-weight: 700;
    color: #2c3e50;
    margin-right: 10px;
}

.refresh-icon {
    color: #0078d7;
    cursor: pointer;
    transition: transform 0.3s ease;
    font-size: 1.5rem;
}

.refresh-icon:hover {
    transform: rotate(180deg);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.info-card {
    background-color: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.info-card:hover {
    transform: translateY(-5px);
}

.info-label {
    font-size: 0.9rem;
    color: #64748b;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
}

.info-label i {
    margin-right: 8px;
    color: #0078d7;
}

.info-value {
    font-size: 1.1rem;
    font-weight: 500;
    color: #2c3e50;
}

/* 产品展示样式（3 张图，统一高度与遮罩） */
.product-showcase {
    padding: 60px 0;
    background-color: #f8fafc;
}

.product-grid {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: stretch;
    margin-top: 30px;
}

.product-item {
    flex: 0 0 32%;
    height: 200px;
    background-size: cover;
    background-position: center;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
}

.product-caption {
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    padding: 10px 14px;
    background: linear-gradient(rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.25));
    color: #fff;
    font-weight: 600;
    text-align: center;
}

/* 页脚区域 */
footer {
    background-color: #2c3e50;
    color: white;
    padding: 60px 0 30px;
}

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

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 3px;
    background-color: #0078d7;
}

.footer-section h3 .toggle-icon {
    transition: transform 0.3s ease;
    margin-left: 0.2px;
}

.footer-links {
    list-style: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.footer-links.open {
    max-height: 500px;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #bdc3c7;
}

.footer-links a:hover {
    color: white;
    padding-left: 5px;
}

.footer-divider {
    height: 1px;
    background-color: #34495e;
    margin: 20px 0;
}

.copyright {
    text-align: center;
    color: #95a5a6;
    font-size: 0.9rem;
    padding-top: 20px;
    border-top: 1px solid #34495e;
}



.hero-content {
    position: relative;
    z-index: 2; /* 保证标题和按钮在最上层 */
}

/* 右下角动作按钮 */
.action-buttons {
    position: fixed;
    right: 18px;
    bottom: 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 999;
    opacity: 0;
    transform: translateY(8px);
    transition: all 250ms ease;
    pointer-events: none;
}

.action-buttons.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.action-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.06);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: transform .18s ease, background .18s ease;
    color: #2c3e50;
}

.action-btn:hover {
    transform: translateY(-4px);
}

/* 微信二维码弹层 */
.wechat-qrcode {
    position: fixed;
    right: 18px;
    bottom: 82px;
    width: 180px;
    background: #fff;
    border-radius: 8px;
    padding: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    z-index: 1000;
    opacity: 0;
    transform: translateY(6px);
    pointer-events: none;
    transition: all 200ms ease;
    text-align: center;
}

.wechat-qrcode.open {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.wechat-qrcode img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 6px;
}

/* 页脚折叠图标旋转样式 */
.footer-section h3 .toggle-icon {
    transition: transform .25s ease;
}

.footer-section h3.open .toggle-icon {
    transform: rotate(180deg);
}

/* 背景图片轮播容器：确保横向排列与平滑动画（新增） */
.bg-images {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: row;
    transition: transform 0.6s cubic-bezier(.4,0,.2,1);
    will-change: transform;
    z-index: 0; /* 背景层 */
}

.bg-image {
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
}

/* 让粒子容器处于背景之上但在文字下方 */
#particles-js {
    z-index: 0;
}

/* 确保 hero 内容在最上层 */
.hero-content { z-index: 2; }

/* 小改进：确保 key-items 在滚动时宽度撑满容器（避免宽度塌陷） */
.key-items {
    width: 100%;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .hero h2 {
        font-size: 1.3rem;
    }
}

@media (max-width: 768px) {
    .hero {
        height: 400px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero h2 {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .purchase-container {
        padding: 20px;
    }

    .version-selector {
        flex-direction: column;
        align-items: flex-start;
    }

    .version-selector .btn {
        margin-left: 0;
        width: 100%;
        justify-content: center;
    }

    .version-selector select {
        width: 100%;
    }

    .comparison-table {
        font-size: 0.9rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 10px 12px;
    }

    /* 表格横向滚动 */
    .table-wrapper {
        overflow-x: auto;
    }

    /* 轮播按钮调整 */
    .carousel-control {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero {
        height: 350px;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .product-grid {
        flex-direction: column;
    }

    .product-item {
        flex: 0 0 100%;
    }
}
/* 在你的CSS部分添加以下样式 */
.top-navbar {
    background-color: #2c3e50;
    color: white;
    padding: 10px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar-container {
    display: flex;
    align-items: center;
    justify-content: flex-start; /* 左对齐容器内容 */
}


.navbar-brand a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.brand-logo {
    width: 22px;
    height: 22px;
    display: inline-block;
    object-fit: contain;
}

.navbar-nav {
    display: flex;
    list-style: none;
    margin-left: auto; /* 将导航推向右侧 */
}

.nav-item {
    margin: 0 15px;
}

.nav-item a {
    color: #ecf0f1;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-item a:hover {
    color: #0078d7;
}

.login-button {
    position: static;
    margin-left: 20px;
}

/* 汉堡按钮，移动端显示 */
.hamburger-btn {
    display: none;
    background: transparent;
    border: none;
    color: #ecf0f1;
    font-size: 1.3rem;
    cursor: pointer;
}

/* 侧边栏与遮罩 */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.4);
    z-index: 150;
}
.mobile-sidebar {
    position: fixed;
    top: 0;
    left: -280px;
    width: 280px;
    height: 100vh;
    background: #fff;
    box-shadow: 2px 0 12px rgba(0,0,0,0.12);
    z-index: 200;
    transition: left 0.25s ease;
    padding: 18px;
    overflow-y: auto;
}
.mobile-sidebar.open { left: 0; }
.sidebar-close {
    background: transparent;
    border: none;
    font-size: 1.6rem;
    line-height: 1;
    cursor: pointer;
    position: absolute;
    top: 12px;
    right: 12px;
}

/* 移动端隐藏原导航，显示汉堡 */
@media (max-width: 768px) {
    .navbar-nav { display: none; }
    .login-button { display: none; }
    .hamburger-btn { display: inline-flex; align-items:center; }
    .navbar-container { justify-content: space-between; }
    .navbar-brand a { font-size: 1.05rem; }
}

/* 全局平滑滚动（新增） */
html { scroll-behavior: smooth; }

/* 用户评价区域样式 */
.user-reviews {
    padding: 80px 0;
    background-color: #f8fafc;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.review-card {
    background-color: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 35px -10px rgba(0, 0, 0, 0.1);
}

.review-header {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #0078d7;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin-right: 15px;
}

.reviewer-info {
    flex: 1;
}

.reviewer-name {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 5px;
}

.review-date {
    font-size: 0.9rem;
    color: #64748b;
}

.rating {
    color: #f59e0b;
}

.review-content {
    color: #334155;
    line-height: 1.7;
    font-size: 1rem;
}