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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

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

/* 导航栏 */
.navbar {
    background: linear-gradient(135deg, #48bff5 0%, #96b45f 100%);
    padding: 1rem 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 25px;
}

.nav-menu a:hover {
    background-color: rgba(255,255,255,0.2);
    transform: translateY(-2px);
}

.download-btn {
    background-color: #c3241b !important;
    color: white !important;
    padding: 0.7rem 1.5rem !important;
    border-radius: 25px !important;
    font-weight: 600 !important;
    text-decoration: none !important;
    box-shadow: 0 4px 15px rgba(195,36,27,0.3);
}

.download-btn:hover {
    background-color: #a01e17 !important;
    transform: translateY(-3px) !important;
    box-shadow: 0 6px 20px rgba(195,36,27,0.4);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主页横幅 */
.hero {
    background: linear-gradient(135deg, #48bff5 0%, #96b45f 50%, #48bff5 100%);
    padding: 120px 0 80px;
    color: white;
    overflow: hidden;
    position: relative;
    min-height: 100vh;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 20"><defs><radialGradient id="a" cx="50%" cy="0%" r="50%"><stop offset="0%" stop-color="white" stop-opacity="0.1"/><stop offset="100%" stop-color="white" stop-opacity="0"/></radialGradient></defs><ellipse cx="50" cy="0" rx="50" ry="20" fill="url(%23a)"/></svg>') repeat-x;
    opacity: 0.3;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #c3241b;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: white;
    font-weight: 500;
}

.hero-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    padding: 1rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none !important;
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn i {
    font-size: 1.1rem;
}

.btn-primary {
    background-color: #c3241b;
    color: white;
    box-shadow: 0 4px 15px rgba(195,36,27,0.3);
}

.btn-primary:hover {
    background-color: #a01e17;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(195,36,27,0.4);
}

.btn-secondary {
    background-color: rgba(255,255,255,0.2);
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: #48bff5;
    transform: translateY(-3px);
}

.btn-large {
    padding: 1.2rem 2.5rem;
    font-size: 1.2rem;
}

.game-info {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.game-info span {
    background-color: rgba(255,255,255,0.2);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.game-preview {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}

.preview-card {
    background-color: rgba(255,255,255,0.15);
    padding: 1.5rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.2);
    transition: all 0.3s ease;
}

.preview-card:hover {
    transform: translateY(-5px);
    background-color: rgba(255,255,255,0.25);
}

.preview-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #c3241b;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.preview-card h3 i {
    color: #48bff5;
}

/* 游戏介绍 */
.about {
    padding: 80px 0;
    background-color: white;
    position: relative;
    z-index: 2;
    margin-top: -20vh;
    border-radius: 30px 30px 0 0;
    box-shadow: 0 -10px 30px rgba(0,0,0,0.1);
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #c3241b;
    margin-bottom: 3rem;
    font-weight: 700;
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h3 {
    color: #48bff5;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.about-text p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
}

.about-text ul {
    list-style: none;
    margin-bottom: 2rem;
}

.about-text li {
    padding: 0.8rem 0;
    font-size: 1.1rem;
    border-bottom: 1px solid #eee;
    color: #555;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.about-text li i {
    color: #48bff5;
    font-size: 1.2rem;
    min-width: 20px;
}

.about-text li:last-child {
    border-bottom: none;
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.stat-card {
    background: linear-gradient(135deg, #48bff5, #96b45f);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    color: white;
    box-shadow: 0 10px 30px rgba(72,191,245,0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.9;
}

/* 游戏特色 */
.features {
    padding: 80px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
    z-index: 3;
}

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #c3241b;
    margin-bottom: 3rem;
    font-weight: 700;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border-top: 4px solid #48bff5;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #48bff5;
}

.feature-icon i {
    transition: all 0.3s ease;
}

.feature-card:hover .feature-icon i {
    transform: scale(1.1);
    color: #c3241b;
}

.feature-card h3 {
    color: #c3241b;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
    font-size: 1rem;
}

/* 更新日志 */
.updates {
    padding: 80px 0;
    background-color: white;
    position: relative;
    z-index: 4;
}

.updates h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #c3241b;
    margin-bottom: 3rem;
    font-weight: 700;
}

.update-timeline {
    max-width: 800px;
    margin: 0 auto;
}

.update-item {
    display: flex;
    gap: 2rem;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid #eee;
}

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

.update-version {
    background: linear-gradient(135deg, #48bff5, #96b45f);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1.1rem;
    min-width: 120px;
    text-align: center;
    height: fit-content;
}

.update-content h3 {
    color: #c3241b;
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.update-content ul {
    list-style: none;
    margin-bottom: 1rem;
}

.update-content li {
    padding: 0.5rem 0;
    color: #555;
    border-left: 3px solid #48bff5;
    padding-left: 1rem;
    margin-bottom: 0.5rem;
}

.update-content p {
    color: #666;
    line-height: 1.6;
}

/* 下载区域 */
.download {
    padding: 60px 0;
    background: linear-gradient(135deg, #48bff5 0%, #96b45f 100%);
    color: white;
    position: relative;
    z-index: 5;
}

/* 下载横幅 */
.download-banner {
    margin-bottom: 2rem;
}

.banner-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 2rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.game-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.game-logo {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.game-details h2 {
    font-size: 2.2rem;
    font-weight: 700;
    margin: 0 0 0.5rem 0;
    color: white;
}

.version {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin: 0 0 1rem 0;
}

.game-meta {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
}

.meta-item i {
    color: #c3241b;
}

/* 下载CTA */
.download-cta {
    text-align: center;
}

.btn-main-download {
    background: #c3241b;
    color: white;
    border: none;
    padding: 1.2rem 2.5rem;
    border-radius: 50px;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none !important;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 32px rgba(195, 36, 27, 0.4);
    margin-bottom: 0.8rem;
}

.btn-main-download:hover {
    background: #a01e17;
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(195, 36, 27, 0.6);
}

.download-info {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
}

/* 下载详情 */
.download-details {
    margin-top: 2rem;
}

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.detail-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.detail-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.detail-card h3 {
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0 0 1rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-card h3 i {
    color: #c3241b;
}

/* 游戏特性卡片 */
.features-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.8rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

.feature-item i {
    color: #c3241b;
    font-size: 1.1rem;
    min-width: 20px;
}

.feature-item span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    font-weight: 500;
}

/* 系统要求卡片 */
.system-info {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.system-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.system-row:hover {
    background: rgba(255, 255, 255, 0.2);
}

.sys-label {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.9rem;
    font-weight: 500;
}

.sys-value {
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    text-align: right;
}

/* 下载选项卡片 */
.download-options {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.download-option {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
    text-decoration: none !important;
}

.download-option:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.download-option.primary {
    background: rgba(195, 36, 27, 0.2);
    border-color: rgba(195, 36, 27, 0.3);
}

.download-option.primary:hover {
    background: rgba(195, 36, 27, 0.3);
}

.option-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    color: white;
    font-size: 1.2rem;
}

.download-option.primary .option-icon {
    background: #c3241b;
}

.option-info {
    flex: 1;
}

.option-info strong {
    display: block;
    color: white;
    font-size: 1rem;
    margin-bottom: 0.2rem;
}

.option-info small {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.8rem;
}

/* 安全徽章 */
.security-badges {
    display: flex;
    gap: 0.8rem;
}

.badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.8rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.9);
}

.badge i {
    color: #48bff5;
}



/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 1rem;
}

.footer-logo img {
    width: 30px;
    height: 30px;
    border-radius: 5px;
}

.footer-logo span {
    font-size: 1.3rem;
    font-weight: 600;
}

.footer-info p {
    opacity: 0.8;
    line-height: 1.6;
}

.footer-links h4 {
    color: #48bff5;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-links ul {
    list-style: none;
}

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

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}



.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    opacity: 0.7;
}

.footer-links-bottom {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links-bottom a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links-bottom a:hover {
    color: #48bff5;
}

/* 页面通用样式 */
.page-header {
    background: linear-gradient(135deg, #48bff5 0%, #96b45f 100%);
    color: white;
    padding: 6rem 0 4rem;
    text-align: center;
    margin-top: 60px;
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.page-header h1 i {
    margin-right: 1rem;
    color: rgba(255, 255, 255, 0.9);
}

.page-header p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.update-date {
    font-size: 0.9rem;
    opacity: 0.8;
    font-weight: 300;
}

/* FAQ页面样式 */
.faq-content {
    padding: 4rem 0;
    background: #f8f9fa;
}

.faq-categories .category {
    background: white;
    border-radius: 12px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.faq-categories .category h2 {
    background: linear-gradient(135deg, #48bff5 0%, #96b45f 100%);
    color: white;
    padding: 1.5rem 2rem;
    margin: 0;
    font-size: 1.5rem;
}

.faq-categories .category h2 i {
    margin-right: 0.5rem;
}

.faq-items {
    padding: 0;
}

.faq-item {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #eee;
}

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

.faq-item h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
    font-weight: 600;
}

.faq-item p {
    color: #666;
    margin: 0;
    line-height: 1.6;
}

/* 用户手册样式 */
.manual-content {
    padding: 4rem 0;
    background: #f8f9fa;
}

.manual-content .container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 3rem;
    max-width: 1200px;
}

.manual-nav {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    height: fit-content;
    position: sticky;
    top: 100px;
}

.manual-nav h3 {
    margin-bottom: 1rem;
    color: #2c3e50;
    font-size: 1.2rem;
}

.manual-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.manual-nav li {
    margin-bottom: 0.5rem;
}

.manual-nav a {
    text-decoration: none;
    color: #666;
    padding: 0.5rem 0;
    display: block;
    transition: color 0.3s ease;
    border-radius: 6px;
    padding-left: 1rem;
}

.manual-nav a:hover {
    color: #48bff5;
    background: rgba(72, 191, 245, 0.1);
}

.manual-sections {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.manual-section {
    padding: 3rem;
    border-bottom: 1px solid #eee;
}

.manual-section:last-child {
    border-bottom: none;
}

.manual-section h2 {
    color: #2c3e50;
    margin-bottom: 2rem;
    font-size: 1.8rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #48bff5;
}

.manual-section h2 i {
    margin-right: 0.5rem;
    color: #48bff5;
}

.manual-section h3 {
    color: #34495e;
    margin: 1.5rem 0 1rem;
    font-size: 1.3rem;
}

.controls-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin: 1rem 0;
}

.control-item {
    background: #f8f9fa;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

.control-item strong {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

/* 隐私政策和服务条款样式 */
.privacy-content,
.terms-content,
.copyright-content {
    padding: 4rem 0;
    background: #f8f9fa;
}

.policy-sections,
.terms-sections,
.copyright-sections {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

.policy-section,
.terms-section,
.copyright-section {
    padding: 3rem;
    border-bottom: 1px solid #eee;
}

.policy-section:last-child,
.terms-section:last-child,
.copyright-section:last-child {
    border-bottom: none;
}

.policy-section h2,
.terms-section h2,
.copyright-section h2 {
    color: #2c3e50;
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #48bff5;
}

.policy-section h2 i,
.terms-section h2 i,
.copyright-section h2 i {
    margin-right: 0.5rem;
    color: #48bff5;
}

.policy-section h3,
.terms-section h3,
.copyright-section h3 {
    color: #34495e;
    margin: 1.5rem 0 1rem;
    font-size: 1.2rem;
}

.security-features,
.ip-protection,
.prohibited-actions,
.support-channels,
.report-channels,
.legal-consequences,
.important-notes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.security-item,
.protection-item,
.action-item,
.support-item,
.report-item,
.consequence-item,
.note-item {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    text-align: center;
}

.security-item i,
.protection-item i,
.action-item i,
.support-item i,
.report-item i,
.consequence-item i,
.note-item i {
    font-size: 2rem;
    color: #48bff5;
    margin-bottom: 1rem;
}

.security-item h4,
.protection-item h4,
.action-item h4,
.support-item h4,
.report-item h4,
.consequence-item h4,
.note-item h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.contact-info {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    margin: 1.5rem 0;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-item i {
    color: #48bff5;
    width: 20px;
    text-align: center;
}

/* 版权页面特殊样式 */
.copyright-owner {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.owner-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
}

.owner-info i {
    font-size: 2rem;
    color: #48bff5;
}

.owner-info h3 {
    margin: 0 0 0.5rem 0;
    color: #2c3e50;
    font-size: 1.1rem;
}

.owner-info p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
}

.protected-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.content-category {
    background: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
}

.content-category h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.content-category h3 i {
    margin-right: 0.5rem;
    color: #48bff5;
}

.trademark-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.trademark-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
}

.trademark-logo {
    width: 40px;
    height: 40px;
}

.trademark-icon {
    width: 40px;
    height: 40px;
    background: #48bff5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.trademark-info h4 {
    margin: 0 0 0.5rem 0;
    color: #2c3e50;
}

.trademark-info p {
    margin: 0;
    color: #666;
    font-size: 0.9rem;
}

.contact-for-licensing {
    background: #e3f2fd;
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
    text-align: center;
}

.contact-for-licensing h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

.contact-for-licensing i {
    margin-right: 0.5rem;
    color: #48bff5;
}

.copyright-notice {
    background: #e8f5e8;
    padding: 2rem;
    border-radius: 8px;
    margin: 2rem 0;
    text-align: center;
}

.copyright-notice p {
    margin: 0.5rem 0;
    color: #2c3e50;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .page-header {
        padding: 4rem 0 3rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .manual-content .container {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .manual-nav {
        position: static;
    }
    
    .manual-section,
    .policy-section,
    .terms-section,
    .copyright-section {
        padding: 2rem 1.5rem;
    }
    
    .security-features,
    .ip-protection,
    .prohibited-actions,
    .support-channels,
    .report-channels,
    .legal-consequences,
    .important-notes,
    .protected-content,
    .trademark-list,
    .copyright-owner {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .controls-grid {
        grid-template-columns: 1fr;
    }
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 500px;
    text-align: center;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: #999;
}

.close:hover {
    color: #c3241b;
}

.modal-content h3 {
    color: #c3241b;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.modal-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: linear-gradient(135deg, #48bff5 0%, #96b45f 100%);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        min-height: 100vh;
        padding: 100px 0 60px;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .about {
        margin-top: -15vh;
        border-radius: 20px 20px 0 0;
    }

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-around;
    }

    .stat-card {
        flex: 1;
        margin: 0 0.5rem;
    }

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

    .update-item {
        flex-direction: column;
        gap: 1rem;
    }

    .update-version {
        align-self: flex-start;
    }

    .banner-content {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }

    .game-info {
        flex-direction: column;
        gap: 1rem;
    }

    .game-meta {
        justify-content: center;
    }

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

    .features-list {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }

    .footer-links-bottom {
        gap: 1rem;
        font-size: 0.8rem;
    }

    .modal-buttons {
        flex-direction: column;
    }

    .container {
        padding: 0 15px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 100px 0 60px;
        min-height: 100vh;
    }

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

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .about {
        margin-top: -10vh;
        border-radius: 15px 15px 0 0;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

    .game-info {
        justify-content: center;
    }

    .features h2,
    .about h2,
    .updates h2 {
        font-size: 2rem;
    }

    .feature-card,
    .preview-card {
        padding: 1.2rem;
    }

    .feature-card h3 {
        font-size: 1.1rem;
        margin-bottom: 0.8rem;
    }

    .feature-card p {
        font-size: 0.9rem;
        line-height: 1.5;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .about-stats {
        flex-direction: row;
        justify-content: space-between;
        gap: 0.5rem;
    }

    .stat-card {
        flex: 1;
        margin: 0;
        padding: 1rem 0.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }

    .game-icon {
        width: 50px;
        height: 50px;
    }

    .title-info h3 {
        font-size: 1.5rem;
    }

    .game-logo {
        width: 60px;
        height: 60px;
    }

    .game-details h2 {
        font-size: 1.8rem;
    }

    .meta-item {
        font-size: 0.8rem;
        padding: 0.3rem 0.6rem;
    }

    .btn-main-download {
        padding: 1rem 2rem;
        font-size: 1.1rem;
    }
}

/* 滚动行为 */
html {
    scroll-behavior: smooth;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-card,
.preview-card,
.stat-card {
    animation: fadeInUp 0.6s ease-out;
}

/* 加载动画 */
.loading {
    opacity: 0;
    animation: fadeInUp 0.8s ease-out forwards;
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #48bff5, #96b45f);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #3a9fd4, #7a9650);
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #c3241b, #a01e17);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 4px 15px rgba(195, 36, 27, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, #a01e17, #8a1914);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(195, 36, 27, 0.4);
}

.back-to-top:active {
    transform: translateY(-1px);
}

@media (max-width: 768px) {
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}