/* 全局样式 */
html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

/* 页眉样式 */
header {
    background-color: #1a4731;
    color: #ffffff;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo img {
    width: 50px;
    height: 50px;
    border-radius: 8px;
}

.logo span {
    font-size: 1.5rem;
    font-weight: bold;
    color: #ffffff;
    letter-spacing: 1px;
}

nav {
    display: flex;
    gap: 1.5rem;
}

nav a {
    color: #f8f9fa;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: #ffffff;
    transition: width 0.3s ease;
}

nav a:hover {
    color: #ffffff;
}

nav a:hover::after {
    width: 100%;
}

@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
    }

    nav {
        margin-top: 1rem;
        flex-direction: column;
        align-items: center;
    }

    nav a {
        margin-bottom: 0.5rem;
    }
}

/* 主要内容样式 */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

/* Section样式 */
section {
    margin-bottom: 0;
    padding: 4rem 2rem;
}

section:nth-child(odd) {
    background-color: #ffffff;
}

section:nth-child(even) {
    background-color: #f8f9fa;
}

section h2 {
    text-align: center;
    color: #1a4731;
    margin-bottom: 2rem;
    font-size: 2rem;
}

section h3 {
    text-align: center;
    color: #1a4731;
    margin: 30px 0 20px;
}

section p {
    text-align: center;
    max-width: 900px;
    margin: 0 auto 20px;
    line-height: 1.8;
}

/* 游戏容器样式 */
.game-container {
    width: 100%;
    max-width: 800px;
    height: 600px;
    margin: 20px auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.game-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* About部分样式 */
.info-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 800px;
    margin: 40px auto;
    padding: 0 20px;
}

.info-card {
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.card-icon {
    font-size: 24px;
}

.card-text {
    font-size: 15px;
    color: #333;
}

#about {
    text-align: center;
    padding: 4rem 2rem;
}

#about p {
    max-width: 800px;
    margin: 0 auto 20px;
    line-height: 1.8;
    color: #444;
}

/* How to play部分样式 */
#how-to-play {
    text-align: center;
    padding: 4rem 2rem;
}

.gameplay-steps {
    max-width: 900px;
    margin: 40px auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 0 20px;
}

.step {
    background: #ffffff;
    padding: 25px;
    border-radius: 15px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.step h3 {
    color: #1a4731;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.step ul {
    text-align: left;
    padding-left: 20px;
    margin: 0;
}

.step li {
    margin-bottom: 12px;
    line-height: 1.6;
    color: #444;
}

/* FAQ样式 */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    overflow: hidden;
}

.faq-question {
    padding: 1.2rem;
    background-color: #ffffff;
    cursor: pointer;
    font-weight: bold;
    position: relative;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: #f0f0f0;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 1rem;
    transition: transform 0.3s ease;
}

.faq-answer {
    text-align: center;
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
    background-color: #ffffff;
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-item.active .faq-answer {
    padding: 1.2rem;
    max-height: 500px;
}

/* 游戏玩法视频部分样式 */
.gameplay-section {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 20px 0;
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* 页脚样式 */
footer {
    background-color: #1a4731;
    color: #ffffff;
    padding: 3rem 0;
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    padding: 0 2rem;
}

.footer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-section ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #f8f9fa;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.footer-bottom {
    background-color: #166a41;
    color: #f8f9fa;
    padding: 1rem 0;
    text-align: center;
    font-size: 0.9rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.social-icons a {
    color: #ffffff;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: #f8f9fa;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
    }

    nav {
        margin-top: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav a {
        margin: 5px 10px;
    }

    section {
        padding: 2rem 1rem;
    }

    .game-container {
        height: 400px;
    }

    .info-cards {
        grid-template-columns: 1fr;
        gap: 15px;
        padding: 0 10px;
    }

    section p {
        padding: 0 15px;
    }

    .faq-container {
        padding: 0 10px;
    }
}

@media (max-width: 900px) {
    .gameplay-steps {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .step {
        padding: 20px;
    }
}

/* 移动端响应式设计 */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        padding: 1rem;
    }

    nav {
        margin-top: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    nav a {
        margin: 0.5rem;
    }

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

    .game-container {
        height: 400px;
    }

    section {
        padding: 2rem 1rem;
    }
}

/* 性能优化 */
* {
    will-change: transform;
    backface-visibility: hidden;
}

/* 添加页面过渡动画 */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 优化图片加载 */
img {
    loading: lazy;
}

/* 改进滚动体验 */
html {
    scroll-padding-top: 80px;
}

/* 优化可访问性 */
:focus {
    outline: 3px solid #1a4731;
    outline-offset: 2px;
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #f4f4f4;
    }

    header {
        background-color: #2a2a2a;
    }

    section:nth-child(odd) {
        background-color: #2a2a2a;
    }

    section:nth-child(even) {
        background-color: #1a1a1a;
    }

    .info-card {
        background-color: #2a2a2a;
    }

    .card-text {
        color: #f4f4f4;
    }

    nav a {
        color: #f4f4f4;
    }

    nav a:hover {
        color: #4CAF50;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

section {
    animation: fadeIn 0.6s ease-out;
}

/* 博客页面样式 */
.blog-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.blog-post {
    border: 1px solid #eee;
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.blog-post:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.blog-post img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.post-content {
    padding: 1.5rem;
}

.post-meta {
    display: flex;
    gap: 1rem;
    color: #666;
    font-size: 0.9rem;
    margin: 0.5rem 0;
}

.read-more {
    display: inline-block;
    margin-top: 1rem;
    color: #007bff;
    text-decoration: none;
}

.read-more:hover {
    text-decoration: underline;
}

.blog-sidebar {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
}

.blog-sidebar h3 {
    margin-bottom: 1rem;
}

.blog-sidebar ul {
    list-style: none;
    padding: 0;
}

.blog-sidebar li {
    margin-bottom: 0.5rem;
}

.blog-sidebar a {
    color: #333;
    text-decoration: none;
}

.blog-sidebar a:hover {
    color: #007bff;
}

@media (max-width: 768px) {
    .blog-grid {
        grid-template-columns: 1fr;
    }
}