/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #8a2be2;
    --primary-dark: #6a0dad;
    --secondary-color: #333;
    --light-color: #f4f4f9;
    --dark-color: #222;
    --text-color: #333;
    --light-text: #777;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-color);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3, h4 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    line-height: 1.3;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-3px);
    box-shadow: var(--shadow);
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.2rem;
    margin-bottom: 50px;
    text-align: center;
    color: var(--secondary-color);
    position: relative;
}

.section-title i {
    color: var(--primary-color);
    margin-right: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* 导航栏 */
.header {
    background-color: rgba(34, 34, 34, 0.95);
    color: white;
    padding: 18px 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo .subtitle {
    font-size: 0.9rem;
    color: #ccc;
    margin-top: 2px;
}

.nav ul {
    display: flex;
    gap: 30px;
}

.nav a {
    font-weight: 500;
    transition: var(--transition);
    padding: 8px 0;
    position: relative;
}

.nav a:hover, .nav a.active {
    color: #8a2be2;
}

.nav a.active::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 3px;
    background-color: #8a2be2;
    bottom: 0;
    left: 0;
    border-radius: 2px;
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* 横幅 */
.banner {
    height: 70vh;
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), 
                url('assets/images/banner/banner-bg.jpg');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    margin-top: 70px;
}

.banner-overlay {
    width: 100%;
    padding: 40px 0;
}

.banner h2 {
    font-size: 3rem;
    color: white;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.banner p {
    font-size: 1.3rem;
    color: #eee;
    margin-bottom: 30px;
    max-width: 700px;
}

/* 下载区域 */
.download-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.download-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.download-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.download-icon {
    font-size: 3.5rem;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.download-card h3 {
    font-size: 1.5rem;
    margin-bottom: 10px;
}

.download-card p {
    color: var(--light-text);
    margin-bottom: 15px;
}

.file-info {
    background-color: #f9f9f9;
    padding: 15px;
    border-radius: var(--border-radius);
    margin: 20px 0;
    text-align: left;
}

.file-info p {
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.download-btn {
    display: block;
    width: 100%;
    margin-top: 20px;
}

.notice {
    border-top: 4px solid #ff9800;
}

.notice .download-icon {
    color: #ff9800;
}

/* 游戏介绍 */
.intro-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.intro-text h3 {
    font-size: 1.4rem;
    margin: 25px 0 15px;
    color: var(--secondary-color);
}

.intro-text p {
    margin-bottom: 15px;
    color: var(--text-color);
    line-height: 1.7;
}

.progress-container {
    margin-top: 30px;
    background-color: #f0f0f0;
    padding: 20px;
    border-radius: var(--border-radius);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    font-weight: 600;
}

.progress-bar {
    height: 10px;
    background-color: #ddd;
    border-radius: 5px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 5px;
    transition: width 1s ease-in-out;
}

.intro-image img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

/* 游戏特色 */
.features-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--light-text);
    line-height: 1.6;
}

/* 游戏动态 */
.news-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.news-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-left: 4px solid var(--primary-color);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.news-date {
    background-color: #f0f0f0;
    color: var(--primary-color);
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 15px;
}

.news-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
}

.news-card p {
    color: var(--light-text);
    margin-bottom: 15px;
}

.news-tag {
    display: inline-block;
    background-color: #e9e9ff;
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* 游戏截图 */
.screenshots-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.screenshot {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 200px;
}

.screenshot:hover {
    transform: scale(1.03);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.screenshot-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.screenshot:hover .screenshot-img {
    transform: scale(1.05);
}

/* 用户评价 */
.reviews-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.review-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 25px;
    box-shadow: var(--shadow);
}

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

.review-avatar {
    width: 50px;
    height: 50px;
    background-color: #f0f0f0;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-right: 15px;
}

.review-info h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.review-rating {
    color: #ffc107;
}

.review-text {
    color: var(--text-color);
    font-style: italic;
    line-height: 1.6;
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    margin-bottom: 5px;
}

.footer-logo p {
    color: #aaa;
}

.footer-info p {
    color: #aaa;
    margin-bottom: 8px;
    text-align: right;
}

/* 模态框 */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background-color: white;
    width: 90%;
    max-width: 500px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
    transform: translateY(30px);
    transition: transform 0.4s ease;
}

.modal-overlay.active .modal {
    transform: translateY(0);
}

.modal-header {
    background-color: var(--primary-color);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 1.5rem;
}

.close-modal {
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    line-height: 1;
}

.modal-body {
    padding: 30px;
}

.modal-body p {
    font-size: 1.1rem;
    line-height: 1.6;
}

.modal-footer {
    padding: 20px;
    background-color: #f9f9f9;
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

.btn-secondary {
    background-color: #777;
}

.btn-secondary:hover {
    background-color: #555;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 100;
    box-shadow: 0 4px 12px rgba(138, 43, 226, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--primary-dark);
    transform: translateY(-5px);
}

/* 响应式设计 */
@media (max-width: 992px) {
    .intro-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .banner h2 {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .header .container {
        flex-wrap: wrap;
    }
    
    .nav {
        width: 100%;
        order: 3;
        margin-top: 20px;
        display: none;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav ul {
        flex-direction: column;
        gap: 15px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 30px;
    }
    
    .footer-info p {
        text-align: center;
    }
    
    .banner {
        height: 60vh;
    }
    
    .banner h2 {
        font-size: 2rem;
    }
    
    .banner p {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 60px 0;
    }
}

@media (max-width: 576px) {
    .download-container,
    .features-container,
    .news-container,
    .screenshots-container,
    .reviews-container {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .btn {
        padding: 10px 22px;
        font-size: 15px;
    }
    
    .section-title {
        font-size: 1.7rem;
    }
}