/* 重置默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* 容器 */
.z4c9dacontainer {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.z4c9daheader {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.z4c9daheader .z4c9dacontainer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.z4c9dalogo h1 {
    font-size: 24px;
    color: #0088cc;
    margin-bottom: 5px;
}

.z4c9dalogo-subtitle {
    font-size: 14px;
    color: #666;
}

.z4c9damain-nav ul {
    display: flex;
    list-style: none;
}

.z4c9damain-nav li {
    margin-left: 30px;
}

.z4c9damain-nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.z4c9damain-nav a:hover {
    color: #0088cc;
}

/* 汉堡菜单按钮 */
.z4c9damenu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
    z-index: 1001;
}

.z4c9damenu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: #333;
    transition: all 0.3s ease;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
}

/* 英雄区域 */
.z4c9dahero {
    background: linear-gradient(135deg, #0088cc, #00a2ff);
    color: white;
    padding: 40px 0;
    min-height: 400px;
    display: flex;
    align-items: center;
}

.z4c9dahero-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.z4c9dahero-text {
    flex: 1;
    text-align: left;
    padding-right: 15px;
}

.z4c9dahero-image {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.z4c9dahero-img {
    max-width: 100%;
    height: auto;
    max-height: 350px;
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.z4c9dahero-img:hover {
    transform: translateY(-3px);
}

.z4c9dahero-text h2 {
    font-size: 2em;
    margin-bottom: 12px;
    line-height: 1.2;
}

.z4c9dahero-text p {
    font-size: 1em;
    margin-bottom: 20px;
    max-width: 450px;
    line-height: 1.4;
}

.z4c9dadownload-buttons {
    display: flex;
    gap: 12px;
}

/* 按钮样式 */
.z4c9dabtn {
    padding: 10px 25px;
    font-size: 0.95em;
}

.z4c9dabtn-primary {
    background-color: #fff;
    color: #0088cc;
}

.z4c9dabtn-secondary {
    background-color: transparent;
    border: 2px solid #fff;
    color: #fff;
}

.z4c9dabtn-primary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

.z4c9dabtn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* 功能特点区域和版本介绍区域共用样式 */
.z4c9dafeature-item,
.z4c9daversion-item {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
}

.z4c9dafeature-item:hover,
.z4c9daversion-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

/* 功能特点区域 */
.z4c9dafeatures {
    padding: 40px 0;
    background-color: #f9f9f9;
}

.z4c9dasection-title {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2em;
    color: #333;
    position: relative;
    padding-bottom: 15px;
}

.z4c9dasection-title:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #0088cc;
    border-radius: 2px;
}

.z4c9dafeature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    padding: 0 10px;
}

.z4c9dafeature-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.z4c9dafeature-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: #f0f7ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0088cc;
    font-size: 24px;
}

.z4c9dafeature-content {
    flex: 1;
}

.z4c9dafeature-content h3 {
    color: #0088cc;
    margin-bottom: 10px;
    font-size: 1.2em;
    font-weight: 600;
}

.z4c9dafeature-content p {
    color: #666;
    font-size: 0.95em;
    line-height: 1.5;
    margin-bottom: 15px;
}

.z4c9dafeature-details {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.z4c9dafeature-details li {
    color: #555;
    font-size: 0.9em;
    padding-left: 20px;
    position: relative;
}

.z4c9dafeature-details li:before {
    content: "✓";
    color: #0088cc;
    position: absolute;
    left: 0;
    font-size: 0.9em;
}

/* 版本介绍区域 */
.z4c9daversions {
    padding: 40px 0;
    background-color: #fff;
}

.z4c9daversion-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    padding: 0 10px;
}

.z4c9daversion-item {
    display: flex;
    flex-direction: column;
}

.z4c9daversion-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.z4c9daversion-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: #f0f7ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0088cc;
    font-size: 24px;
}

.z4c9daversion-title {
    flex: 1;
}

.z4c9daversion-title h3 {
    color: #0088cc;
    margin: 0;
    font-size: 1.2em;
    font-weight: 600;
}

.z4c9daversion-tag {
    display: inline-block;
    background: #f0f7ff;
    color: #0088cc;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8em;
    margin-top: 5px;
}

.z4c9daversion-content {
    flex: 1;
}

.z4c9daversion-platforms {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 20px;
}

.z4c9daplatform-item {
    text-align: center;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.z4c9daplatform-item:hover {
    background: #f0f7ff;
    transform: translateY(-2px);
}

.z4c9daplatform-item i {
    font-size: 24px;
    color: #0088cc;
    margin-bottom: 8px;
}

.z4c9daplatform-item span {
    display: block;
    font-weight: 500;
    color: #333;
    margin-bottom: 4px;
}

.z4c9daplatform-item small {
    color: #666;
    font-size: 0.8em;
}

.z4c9daversion-features {
    margin-bottom: 20px;
}

.z4c9daversion-features h4 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.1em;
    font-weight: 600;
}

.z4c9daversion-features ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.z4c9daversion-features li {
    color: #555;
    font-size: 0.9em;
    padding-left: 20px;
    position: relative;
}

.z4c9daversion-features li:before {
    content: "→";
    color: #0088cc;
    position: absolute;
    left: 0;
}

.z4c9daversion-actions {
    display: flex;
    gap: 15px;
    margin-top: auto;
}

.z4c9daversion-actions .z4c9dabtn {
    flex: 1;
    text-align: center;
}

/* 安全指南样式 */
.z4c9dasecurity-tip {
    margin-bottom: 20px;
}

.z4c9dasecurity-tip:last-child {
    margin-bottom: 0;
}

.z4c9dasecurity-tip h4 {
    color: #333;
    margin: 0 0 10px;
    font-size: 1.1em;
}

.z4c9dasecurity-tip ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.z4c9dasecurity-tip li {
    color: #666;
    padding: 8px 0;
    padding-left: 20px;
    position: relative;
    font-size: 0.9em;
}

.z4c9dasecurity-tip li:before {
    content: "✓";
    color: #0088cc;
    position: absolute;
    left: 0;
}

/* FAQ区域 */
.z4c9dafaq {
    padding: 40px 0;
    background-color: #f9f9f9;
}

.z4c9dafaq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    padding: 0 10px;
}

.z4c9dafaq-item {
    background: white;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: all 0.3s ease;
    display: flex;
    align-items: flex-start;
    gap: 20px;
}

.z4c9dafaq-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.z4c9dafaq-icon {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background: #f0f7ff;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #0088cc;
    font-size: 24px;
}

.z4c9dafaq-content {
    flex: 1;
}

.z4c9dafaq-content h3 {
    color: #0088cc;
    margin-bottom: 10px;
    font-size: 1.2em;
    font-weight: 600;
}

.z4c9dafaq-content p {
    color: #666;
    font-size: 0.95em;
    line-height: 1.5;
    margin-bottom: 15px;
}

.z4c9dafaq-details {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
}

.z4c9dafaq-details li {
    color: #555;
    font-size: 0.9em;
    padding-left: 20px;
    position: relative;
}

.z4c9dafaq-details li:before {
    content: "✓";
    color: #0088cc;
    position: absolute;
    left: 0;
    font-size: 0.9em;
}

/* 博客区域 */
.z4c9dablog {
    padding: 40px 0;
    background-color: #fff;
}

.z4c9dablog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.z4c9dablog-item {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.z4c9dablog-item:hover {
    transform: translateY(-5px);
}

.z4c9dablog-date {
    color: #666;
    font-size: 0.9em;
    margin-bottom: 10px;
}

.z4c9dablog-item h3 {
    color: #0088cc;
    margin-bottom: 15px;
    font-size: 1.3em;
}

.z4c9dablog-item p {
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

.z4c9daread-more {
    color: #0088cc;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.z4c9daread-more:hover {
    color: #006699;
}

/* 页脚 */
.z4c9dafooter {
    background-color: #333;
    color: white;
    padding: 20px 0 15px;
}

.z4c9dafooter-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.z4c9dafooter-section h4 {
    color: #fff;
    margin-bottom: 8px;
}

.z4c9dafooter-section p {
    color: #ccc;
    font-size: 0.85em;
}

.z4c9dafooter-section ul {
    list-style: none;
}

.z4c9dafooter-section ul li {
    margin-bottom: 5px;
}

.z4c9dafooter-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
    font-size: 0.85em;
}

.z4c9dafooter-section ul li a:hover {
    color: #fff;
}

.z4c9dacopyright {
    text-align: center;
    padding-top: 10px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #999;
    font-size: 0.8em;
}

/* 响应式设计 */
/* 平板设备 */
@media (max-width: 1024px) {
    .z4c9dacontainer {
        padding: 0 30px;
    }

    .z4c9dafeature-grid,
    .z4c9daversion-grid,
    .z4c9dafaq-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .z4c9dablog-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .z4c9dahero-text h2 {
        font-size: 1.8em;
    }

    .z4c9dasection-title {
        font-size: 1.8em;
        margin-bottom: 30px;
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    .z4c9damain-nav {
        position: static;
        width: 100%;
        max-width: 100%;
        height: auto;
        background: none;
        box-shadow: none;
        padding: 0;
        margin: 0;
        overflow-x: auto;
        white-space: nowrap;
        border: none;
    }
    .z4c9damain-nav ul {
        display: flex;
        flex-direction: row;
        flex-wrap: nowrap;
        overflow-x: auto;
        white-space: nowrap;
        padding: 0 0 0 2px;
        margin: 0;
        gap: 8px;
        border: none;
    }
    .z4c9damain-nav li {
        display: inline-block;
        margin: 0 6px 0 0;
        padding: 0;
        border: none;
    }
    .z4c9damain-nav a {
        font-size: 13px;
        padding: 4px 8px;
        border: 1px solid #e0e0e0;
        border-radius: 3px;
        background: #fff;
        color: #333;
        text-decoration: underline;
        margin: 0;
        min-width: 44px;
        box-sizing: border-box;
        transition: color 0.2s, border-color 0.2s;
    }
    .z4c9damain-nav a:hover {
        color: #0088cc;
        border-color: #0088cc;
        background: none;
    }
    .z4c9daheader .z4c9dacontainer {
        flex-direction: column;
        align-items: flex-start;
        height: auto;
        padding: 0 12px;
    }
    .z4c9dalogo {
        margin-bottom: 2px;
    }
    .z4c9damain-nav {
        margin-bottom: 0;
    }

    /* 汉堡菜单动画 */
    .z4c9damenu-toggle.active span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .z4c9damenu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .z4c9damenu-toggle.active span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* 遮罩层 */
    .z4c9danav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0,0,0,0.5);
        z-index: 999;
    }

    .z4c9danav-overlay.active {
        display: block;
    }

    .z4c9dahero {
        padding: 30px 0;
        min-height: auto;
    }

    .z4c9dahero-content {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }

    .z4c9dahero-text {
        text-align: center;
        padding-right: 0;
    }

    .z4c9dahero-text p {
        margin-left: auto;
        margin-right: auto;
    }

    .z4c9dadownload-buttons {
        justify-content: center;
    }

    .z4c9dahero-image {
        margin-top: 15px;
    }

    .z4c9dahero-img {
        max-height: 280px;
    }

    .z4c9dafeature-grid,
    .z4c9daversion-grid,
    .z4c9dafaq-grid,
    .z4c9dablog-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .z4c9dasection-title {
        font-size: 1.6em;
        margin-bottom: 25px;
    }

    .z4c9dabtn {
        display: block;
        margin: 8px auto;
        max-width: 200px;
    }

    .z4c9dafeatures {
        padding: 30px 0;
    }

    .z4c9dafeature-details,
    .z4c9daversion-features ul {
        grid-template-columns: 1fr;
    }

    .z4c9daversion-platforms {
        grid-template-columns: repeat(2, 1fr);
    }

    .z4c9dafaq-item {
        padding: 20px;
    }

    .z4c9dafaq-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .z4c9dafaq-icon {
        margin-bottom: 5px;
    }

    .z4c9dafaq-details {
        text-align: left;
    }
}

/* 小屏幕移动设备 */
@media (max-width: 480px) {
    .z4c9dacontainer {
        padding: 0 15px;
    }

    .z4c9daheader .z4c9dacontainer {
        padding: 0 15px;
    }

    .z4c9damain-nav {
        width: 85%;
    }

    .z4c9dahero {
        padding: 25px 0;
    }

    .z4c9dahero-text h2 {
        font-size: 1.5em;
    }

    .z4c9dahero-text p {
        font-size: 0.9em;
    }

    .z4c9dahero-img {
        max-height: 200px;
    }

    .z4c9dafooter-content {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .z4c9dabtn {
        padding: 8px 20px;
        font-size: 0.9em;
    }

    .z4c9dasection-title {
        font-size: 1.5em;
        margin-bottom: 20px;
    }

    .z4c9dafeature-item,
    .z4c9daversion-item {
        padding: 15px;
    }

    .z4c9dafeature-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .z4c9dafeature-icon {
        margin-bottom: 5px;
    }

    .z4c9dafeature-details {
        text-align: left;
    }

    .z4c9daversion-header {
        padding: 15px;
    }

    .z4c9daversion-content {
        padding: 15px;
    }

    .z4c9daversion-platforms {
        grid-template-columns: 1fr;
    }

    .z4c9daversion-actions {
        flex-direction: column;
    }

    .z4c9daversion-actions .z4c9dabtn {
        width: 100%;
    }

    .z4c9daversion-features ul {
        text-align: left;
    }

    .z4c9dafaq-icon {
        width: 35px;
        height: 35px;
        font-size: 18px;
    }

    .z4c9dafaq-content h3 {
        font-size: 1.1em;
    }

    .z4c9dafaq-details {
        grid-template-columns: 1fr;
    }

    .z4c9dablog-item {
        padding: 15px;
    }

    .z4c9dablog-item h3 {
        font-size: 1.1em;
    }

    .z4c9dablog-item p {
        font-size: 0.9em;
    }
}