/* 全局重置与变量 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #ff6b9d;
    --primary-dark: #e55a8a;
    --secondary: #c44569;
    --accent: #f8b500;
    --dark: #1a1a2e;
    --dark-light: #16213e;
    --text: #ffffff;
    --text-secondary: #b8b8d4;
    --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #ff6b9d 100%);
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--dark);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 顶部导航 */
.top-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.top-header.scrolled {
    box-shadow: var(--shadow);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text);
    text-decoration: none;
}

.site-logo {
    height: 45px;
    width: auto;
    object-fit: contain;
}

.site-name {
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.main-nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    transition: var(--transition);
    padding: 0.5rem 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--text);
}

.nav-link:hover::after {
    width: 100%;
}

.cta-button {
    background: var(--bg-gradient);
    color: var(--text);
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 157, 0.6);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: var(--text);
    border-radius: 3px;
    transition: var(--transition);
}

/* 主横幅 */
.banner-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.banner-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.banner-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.3);
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(26, 26, 46, 0.8) 0%, rgba(22, 33, 62, 0.9) 100%);
}

.banner-content {
    position: relative;
    z-index: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.banner-text {
    animation: fadeInLeft 1s ease-out;
}

.banner-title {
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.title-line {
    display: block;
}

.banner-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.banner-actions {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.action-btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    display: inline-block;
}

.primary-btn {
    background: var(--bg-gradient);
    color: var(--text);
    box-shadow: 0 4px 15px rgba(255, 107, 157, 0.4);
}

.primary-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(255, 107, 157, 0.6);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.banner-image {
    animation: fadeInRight 1s ease-out;
}

.featured-image {
    width: 100%;
    height: auto;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg);
    transition: var(--transition);
}

.featured-image:hover {
    transform: perspective(1000px) rotateY(0deg) scale(1.05);
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    animation: bounce 2s infinite;
}

.scroll-arrow {
    width: 2px;
    height: 30px;
    background: var(--primary);
    margin: 0.5rem auto;
    position: relative;
}

.scroll-arrow::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -4px;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--primary);
    border-bottom: 2px solid var(--primary);
    transform: rotate(45deg);
}

/* 游戏展示区 */
.games-section {
    padding: 6rem 2rem;
    background: var(--dark-light);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
}

.games-showcase {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.game-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 3/4;
    cursor: pointer;
}

.game-item.large-game {
    grid-column: span 2;
    grid-row: span 2;
    aspect-ratio: 1/1;
}

.game-cover {
    width: 100%;
    height: 100%;
    position: relative;
    overflow: hidden;
}

.game-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9) 0%, transparent 100%);
    display: flex;
    align-items: flex-end;
    padding: 2rem;
    opacity: 0;
    transition: var(--transition);
}

.game-item:hover .game-overlay {
    opacity: 1;
}

.game-item:hover .game-cover img {
    transform: scale(1.1);
}

.game-info h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.game-info p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.play-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: var(--primary);
    color: var(--text);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.play-btn:hover {
    background: var(--primary-dark);
    transform: translateX(5px);
}

/* 特色功能 */
.features-section {
    padding: 6rem 2rem;
    background: var(--dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-box {
    background: rgba(255, 255, 255, 0.05);
    padding: 3rem 2rem;
    border-radius: 20px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.feature-box:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    box-shadow: var(--shadow);
}

.feature-icon-wrapper {
    margin-bottom: 1.5rem;
}

.feature-icon {
    font-size: 3.5rem;
    display: inline-block;
    filter: drop-shadow(0 4px 8px rgba(255, 107, 157, 0.3));
}

.feature-box h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.feature-box p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 最新动态 */
.news-section {
    padding: 6rem 2rem;
    background: var(--dark-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.news-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.news-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow);
    border-color: var(--primary);
}

.news-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-image img {
    transform: scale(1.1);
}

.news-content {
    padding: 2rem;
}

.news-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background: var(--primary);
    color: var(--text);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.news-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text);
}

.news-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.8;
}

.news-date {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 关于我们 */
.about-section {
    padding: 6rem 2rem;
    background: var(--dark);
}

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

.about-text h2 {
    font-size: 3rem;
    margin-bottom: 2rem;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    background: var(--bg-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

.about-image {
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* 页脚 */
.site-footer {
    background: var(--dark-light);
    padding: 4rem 2rem 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 700;
}

.footer-logo-img {
    height: 40px;
    width: auto;
}

.footer-col p {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.8;
}

.footer-col a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--primary);
}

.footer-col h4 {
    margin-bottom: 1.5rem;
    color: var(--text);
}

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

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

/* 返回顶部 */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--bg-gradient);
    border: none;
    border-radius: 50%;
    color: var(--text);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
}

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

.back-to-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* 动画 */
@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    50% {
        transform: translateX(-50%) translateY(-10px);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .banner-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .banner-title {
        font-size: 3rem;
    }
    
    .games-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .game-item.large-game {
        grid-column: span 2;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        background: rgba(26, 26, 46, 0.98);
        flex-direction: column;
        padding: 2rem;
        transition: var(--transition);
        backdrop-filter: blur(20px);
    }
    
    .main-nav.active {
        left: 0;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .banner-title {
        font-size: 2.5rem;
    }
    
    .banner-desc {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .games-showcase {
        grid-template-columns: 1fr;
    }
    
    .game-item.large-game {
        grid-column: span 1;
    }
    
    .features-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .header-container {
        padding: 1rem;
    }
}

@media (max-width: 480px) {
    .banner-title {
        font-size: 2rem;
    }
    
    .action-btn {
        padding: 0.875rem 2rem;
        font-size: 0.9rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
}