/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft Yahei", Arial, sans-serif;
}
body {
    background-color: #f5f8fa;
    color: #333;
    line-height: 1.6;
}
/* 优化容器为宽屏适配 */
.container {
    width: 98%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 10px;
}
a {
    text-decoration: none;
    color: #165dff;
}
a:hover {
    color: #0040c9;
}
button {
    cursor: pointer;
    border: none;
    background-color: #165dff;
    color: white;
    padding: 10px 20px;
    border-radius: 4px;
    font-size: 16px;
    transition: background-color 0.3s;
}
button:hover {
    background-color: #0040c9;
}
.section-title {
    font-size: 28px;
    text-align: center;
    margin: 40px 0 20px;
    color: #222;
    position: relative;
    /* 移除下划线 */
}
/* 移除标题下划线 */
.section-title::after {
    display: none;
}
/* 宽屏网格布局优化 */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 20px 0;
}
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin: 20px 0;
}
.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin: 20px 0;
}
/* 响应式优化 - 宽屏适配 */
@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 992px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .grid-3 {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 768px) {
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* 导航栏 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 999;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}
.logo {
    font-size: 24px;
    font-weight: bold;
    color: #165dff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.logo-icon {
    font-size: 28px;
}
.nav-menu {
    display: flex;
    list-style: none;
}
.nav-menu li {
    margin: 0 15px;
}
.nav-menu a {
    font-size: 16px;
    font-weight: 500;
    color: #333;
    padding: 5px 0;
    border-bottom: 2px solid transparent;
    transition: border-color 0.3s;
}
.nav-menu a:hover {
    border-color: #165dff;
    color: #165dff;
}
.mobile-menu {
    display: none;
    font-size: 24px;
    cursor: pointer;
}
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: white;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        padding: 20px;
    }
    .nav-menu li {
        margin: 10px 0;
    }
    .mobile-menu {
        display: block;
    }
}

/* Banner区域（连续波浪底样式） */
.banner {
    background: linear-gradient(135deg, #165dff 0%, #4080ff 100%);
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}
.banner-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 2;
    max-width: 1600px;
    margin: 0 auto;
    width: 98%;
    padding: 0 10px;
}
.banner-left {
    flex: 1;
    padding-right: 40px;
}
.banner-title {
    font-size: 42px;
    margin-bottom: 25px;
    line-height: 1.3;
}
.banner-desc {
    font-size: 20px;
    margin-bottom: 35px;
    line-height: 1.8;
}
.banner-features {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 30px;
}
.banner-feature {
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(255,255,255,0.2);
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 14px;
}
.banner-btn {
    display: inline-block;
    background-color: white;
    color: #165dff;
    padding: 14px 35px;
    border-radius: 6px;
    font-size: 18px;
    font-weight: bold;
    margin-right: 20px;
    margin-bottom: 10px;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}
.banner-btn:hover {
    background-color: #f0f7ff;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.15);
}
.banner-right {
    flex: 1;
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
}
.stat-card {
    text-align: center;
    margin: 0 20px;
    animation: flash 2s infinite alternate;
    background-color: rgba(255,255,255,0.15);
    padding: 20px;
    border-radius: 12px;
    min-width: 150px;
}
/* 减小banner数字大小 */
.stat-number {
    font-size: 36px; /* 从56px改为36px */
    font-weight: bold;
    margin-bottom: 12px;
}
.stat-text {
    font-size: 18px; /* 从20px改为18px */
}
@keyframes flash {
    from { opacity: 0.8; }
    to { opacity: 1; }
}
/* 连续波浪样式 - 多层波浪更自然 */
.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 120px;
    background: url("data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjAwJSIgaGVpZ2h0PSIxMjAiIHZpZXdCb3g9IjAgMCAyMDAgMTIwIiBmaWxsPSJ3aGl0ZSIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj48cGF0aCBkPSJNMCwxMjBDNTAsODAgMTUwLDAgMjAwLDEyMEwyMDAsMTIwVjEyMCIgZmlsbD0id2hpdGUiLz48L3N2Zz4=") repeat-x;
    background-size: 1000px 120px;
    animation: wave 15s linear infinite;
    z-index: 1;
    opacity: 0.8;
}
.wave-2 {
    height: 80px;
    background-size: 1000px 80px;
    animation: wave 20s linear infinite reverse;
    opacity: 0.6;
}
.wave-3 {
    height: 100px;
    background-size: 1000px 100px;
    animation: wave 25s linear infinite;
    opacity: 0.4;
}
@keyframes wave {
    0% { background-position-x: 0; }
    100% { background-position-x: 1000px; }
}
@media (max-width: 768px) {
    .banner {
        padding: 60px 0;
    }
    .banner-container {
        flex-direction: column;
        text-align: center;
    }
    .banner-left {
        padding-right: 0;
        margin-bottom: 40px;
    }
    .banner-title {
        font-size: 32px;
    }
    .banner-desc {
        font-size: 18px;
    }
    .stat-card {
        margin: 15px 10px;
    }
    .stat-number {
        font-size: 28px; /* 移动端进一步减小 */
    }
    .wave {
        height: 80px;
        background-size: 800px 80px;
    }
    .wave-2 {
        height: 60px;
        background-size: 800px 60px;
    }
    .wave-3 {
        height: 70px;
        background-size: 800px 70px;
    }
}

/* 内容区域通用样式 - 宽屏适配 */
.content-section {
    padding: 80px 0;
    background-color: white;
    margin-bottom: 30px;
    border-radius: 12px;
    box-shadow: 0 2px 15px rgba(0,0,0,0.05);
    width: 100%;
    position: relative;
}
.content-desc {
    font-size: 18px;
    color: #666;
    text-align: center;
    margin-bottom: 50px;
    line-height: 1.8;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 20px;
}
.card {
    padding: 40px 30px;
    background-color: #f9fbff;
    border-radius: 12px;
    transition: all 0.3s;
    height: 100%;
    position: relative;
    overflow: hidden;
}
.card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #165dff, #4080ff);
    opacity: 0;
    transition: opacity 0.3s;
}
.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}
.card:hover::before {
    opacity: 1;
}
.card-title {
    font-size: 22px;
    margin-bottom: 20px;
    color: #222;
    display: flex;
    align-items: center;
    gap: 10px;
}
.card-icon {
    font-size: 24px;
    color: #165dff;
}
/* 优化内容样式，增加间距和可读性 */
.card-content {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    /* 优化内容排版 */
    display: grid;
    gap: 12px;
}
.card-content p {
    margin: 0;
    padding: 4px 0;
}
.card-content ul {
    padding-left: 20px;
    margin: 0;
}
.card-content li {
    margin-bottom: 8px;
    padding: 2px 0;
}

/* 用户评价 */
.review-card {
    text-align: center;
    padding: 40px 30px;
}
.review-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: #e8f3ff;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: #165dff;
}
.review-user {
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
    font-size: 17px;
}
.review-content {
    color: #666;
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 15px;
    /* 精简评价内容样式 */
    padding: 10px;
    background-color: rgba(255,255,255,0.7);
    border-radius: 8px;
}
.review-rating {
    color: #ff9800;
    margin: 15px 0;
    font-size: 20px;
}
.review-tag {
    display: inline-block;
    padding: 5px 12px;
    background-color: #e8f3ff;
    color: #165dff;
    border-radius: 20px;
    font-size: 14px;
    margin-top: 10px;
}

/* 常见问题 */
.faq-card {
    padding: 30px;
    background-color: #f9fbff;
    border-radius: 12px;
    margin-bottom: 20px;
    transition: all 0.3s;
}
.faq-card:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.faq-question {
    font-size: 18px;
    font-weight: 500;
    color: #222;
    margin-bottom: 15px;
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.faq-question::before {
    content: "Q";
    display: inline-block;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: #165dff;
    color: white;
    text-align: center;
    line-height: 24px;
    font-size: 14px;
    flex-shrink: 0;
}
.faq-answer {
    font-size: 16px;
    color: #666;
    line-height: 1.8;
    padding-left: 34px;
    /* 精简回答样式 */
    padding: 10px 10px 10px 34px;
    background-color: rgba(255,255,255,0.7);
    border-radius: 8px;
}

/* 帮助中心 */
.help-center {
    text-align: center;
    padding: 60px 0;
}
.help-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
}
.help-method {
    padding: 30px;
    background-color: #f9fbff;
    border-radius: 12px;
    transition: all 0.3s;
}
.help-method:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}
.help-icon {
    font-size: 40px;
    color: #165dff;
    margin-bottom: 20px;
}
.help-title {
    font-size: 20px;
    margin-bottom: 15px;
    color: #222;
}
.help-desc {
    color: #666;
    line-height: 1.8;
}
.contact-info {
    font-size: 20px;
    margin: 40px 0 20px;
}
.contact-item {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.contact-icon {
    margin-right: 10px;
    color: #165dff;
    font-size: 24px;
}
@media (max-width: 768px) {
    .help-methods {
        grid-template-columns: 1fr;
    }
}

/* 系统对比 - 移除滚动条，宽屏适配 */
.comparison-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 20px 0 40px;
    width: 100%;
}
.comparison-list {
    display: flex;
    gap: 25px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}
.comparison-item {
    background-color: #f9fbff;
    border-radius: 12px;
    padding: 40px 25px;
    width: calc(25% - 20px);
    min-width: 220px;
    transition: all 0.3s;
    height: 100%;
    position: relative;
}
.comparison-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #165dff, #4080ff);
    border-radius: 12px 12px 0 0;
}
.comparison-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(22, 93, 255, 0.15);
}
.comparison-item h3 {
    font-size: 20px;
    color: #222;
    margin-bottom: 25px;
    text-align: center;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}
.comparison-item ul {
    list-style: none;
    padding-left: 0;
    /* 优化对比列表样式 */
    display: grid;
    gap: 10px;
}
.comparison-item li {
    font-size: 16px;
    color: #666;
    margin-bottom: 0;
    line-height: 1.8;
    display: flex;
    align-items: flex-start;
    padding: 5px 0;
}
.comparison-item li span {
    display: inline-block;
    width: 22px;
    margin-right: 10px;
    flex-shrink: 0;
    font-size: 18px;
}
.comparison-note {
    text-align: center;
    margin-top: 30px;
    font-size: 14px;
    color: #999;
    font-style: italic;
}
@media (max-width: 1200px) {
    .comparison-item {
        width: calc(33.33% - 20px);
    }
}
@media (max-width: 992px) {
    .comparison-item {
        width: calc(50% - 20px);
    }
}
@media (max-width: 768px) {
    .comparison-item {
        width: 100%;
        min-width: unset;
    }
}

/* 网站地图 - 宽屏适配 */
.sitemap {
    background-color: #ffffff;
    padding: 80px 0;
    margin-top: 40px;
    border-top: 1px solid #eee;
    width: 100%;
}
.sitemap-title {
    font-size: 30px;
    text-align: center;
    margin-bottom: 60px;
    color: #333;
    font-weight: 600;
    /* 移除下划线 */
}
.sitemap-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 50px;
    max-width: 1600px;
    margin: 0 auto;
    width: 98%;
    padding: 0 20px;
}
.sitemap-column {
    padding: 15px;
}
.sitemap-column-title {
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 25px;
    color: #333;
    padding-bottom: 15px;
    position: relative;
    /* 移除下划线 */
}
.sitemap-column-title::after {
    display: none;
}
.sitemap-list {
    list-style: none;
}
.sitemap-list li {
    margin-bottom: 15px;
    position: relative;
    padding-left: 15px;
}
.sitemap-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: #165dff;
}
.sitemap-list li a {
    color: #333;
    font-size: 17px;
    transition: color 0.3s;
}
.sitemap-list li a:hover {
    color: #165dff;
    padding-left: 5px;
}
@media (max-width: 992px) {
    .sitemap-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 768px) {
    .sitemap-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* 热搜关键词样式 */
.hot-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 20px auto 40px;
    justify-content: center;
    max-width: 1200px;
    padding: 0 20px;
}
.hot-tag {
    padding: 8px 18px;
    background-color: #e8f3ff;
    color: #666;
    border-radius: 25px;
    font-size: 15px;
    font-weight: 500;
    transition: all 0.3s;
}
.hot-tag:hover {
    background-color: #165dff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(22, 93, 255, 0.2);
}




/* 页脚 - 优化布局，移除中间横线 */
footer {
    background-color: #1a1a1a;
    color: #fff;
    padding: 80px 0 40px;
    text-align: center;
    width: 100%;
}
.footer-container {
    max-width: 1600px;
    margin: 0 auto;
    width: 98%;
    padding: 0 20px;
}
.footer-top {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #333;
}
/* 关键修改：底部AIGC检测中心文字改为白色 */
.footer-logo {
    font-size: 28px;
    font-weight: bold;
    color: #ffffff !important; /* 强制改为白色 */
    margin-bottom: 20px;
}
.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    margin-bottom: 20px;
}
.footer-links a {
    color: #fff;
    font-size: 18px;
    padding: 8px 0;
    transition: color 0.3s;
}
.footer-links a:hover {
    color: #165dff;
}
.footer-contact {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-bottom: 20px;
}
.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #ccc;
}
.footer-middle {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
    text-align: left;
}
.footer-column {
    flex: 1;
    min-width: 200px;
    margin-bottom: 20px;
    padding: 0 15px;
}
.footer-column-title {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
    font-weight: 500;
}
.footer-column-list {
    list-style: none;
}
.footer-column-list li {
    margin-bottom: 12px;
}
.footer-column-list a {
    color: #ccc;
    font-size: 16px;
    transition: color 0.3s;
}
.footer-column-list a:hover {
    color: #165dff;
}
.footer-info {
    font-size: 16px;
    line-height: 2.2;
    color: #ccc;
    margin-bottom: 30px;
    padding: 0 20px;
}
.copyright {
    font-size: 16px;
    color: #999;
    padding-top: 30px;
    border-top: 1px solid #333;
}
@media (max-width: 768px) {
    .footer-middle {
        flex-direction: column;
    }
    .footer-column {
        min-width: 100%;
        padding: 0;
    }
}