/* 全局样式 */
:root {
    --primary-color: #00d4ff;
    --primary-dark: #00a8cc;
    --secondary-color: #ff6b35;
    --bg-dark: #0a0a1a;
    --bg-card: rgba(20, 25, 45, 0.8);
    --text-primary: #ffffff;
    --text-secondary: #b0b8c9;
    --gradient-primary: linear-gradient(135deg, #00d4ff 0%, #00ff88 100%);
    --gradient-secondary: linear-gradient(135deg, #ff6b35 0%, #ff9a56 100%);
    --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

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

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 0 50px;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--gradient-primary);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-glow);
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 15px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-buttons {
    display: flex;
    gap: 15px;
}

.btn {
    padding: 10px 24px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* 汉堡菜单 */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.menu-toggle span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* 英雄区 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px 60px;
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 50%, rgba(0, 255, 136, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 100%, rgba(255, 107, 53, 0.1) 0%, transparent 40%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.hero-title {
    font-size: 64px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-title span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-download {
    padding: 16px 40px;
    font-size: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-outline {
    padding: 16px 40px;
    font-size: 18px;
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.btn-outline:hover {
    border-color: var(--primary-color);
    background: rgba(0, 212, 255, 0.1);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 80px;
}

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

.stat-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 5px;
}

/* 特性区块 */
.features {
    padding: 100px 20px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 212, 255, 0.03) 50%, transparent 100%);
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
}

.section-title {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 15px;
}

.section-desc {
    font-size: 16px;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px 30px;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.2) 0%, rgba(0, 255, 136, 0.1) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin-bottom: 25px;
}

.feature-title {
    font-size: 22px;
    font-weight: 600;
    margin-bottom: 15px;
}

.feature-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 模拟器预览 */
.preview {
    padding: 100px 20px;
}

.preview-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.preview-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.4);
}

.preview-image::before {
    content: '';
    position: absolute;
    inset: 0;
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: 20px;
    pointer-events: none;
}

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

.preview-content h2 {
    font-size: 38px;
    font-weight: 700;
    margin-bottom: 25px;
}

.preview-content h2 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.preview-content p {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.8;
}

.preview-list {
    list-style: none;
    margin-bottom: 35px;
}

.preview-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 15px;
    font-size: 16px;
}

.preview-list li::before {
    content: '✓';
    width: 24px;
    height: 24px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: #000;
    font-weight: bold;
}

/* 游戏展示 */
.games {
    padding: 100px 20px;
    background: linear-gradient(180deg, transparent 0%, rgba(255, 107, 53, 0.03) 50%, transparent 100%);
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    max-width: 1000px;
    margin: 0 auto;
}

.game-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
}

.game-card:hover {
    transform: translateY(-5px);
    border-color: var(--secondary-color);
}

.game-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    border-radius: 20px;
    margin: 0 auto 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
}

.game-name {
    font-size: 16px;
    font-weight: 600;
}

/* CTA区域 */
.cta {
    padding: 100px 20px;
    text-align: center;
}

.cta-box {
    max-width: 900px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.05) 100%);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 30px;
    padding: 80px 50px;
    position: relative;
    overflow: hidden;
}

.cta-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta h2 {
    font-size: 40px;
    margin-bottom: 20px;
}

.cta p {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 35px;
}

/* 页脚 */
.footer {
    background: rgba(5, 5, 15, 0.9);
    padding: 60px 20px 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 60px;
    margin-bottom: 50px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.footer-column h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

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

.footer-column li {
    margin-bottom: 12px;
}

.footer-column a {
    font-size: 14px;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-secondary);
}

.footer-links {
    display: flex;
    gap: 30px;
}

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

/* 移动端响应式 */
@media (max-width: 992px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(10, 10, 26, 0.98);
        flex-direction: column;
        padding: 30px;
        gap: 25px;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-buttons {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .hero-title {
        font-size: 42px;
    }

    .hero-stats {
        gap: 30px;
    }

    .stat-number {
        font-size: 32px;
    }

    .preview-container {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .section-title {
        font-size: 32px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 20px;
    }

    .footer-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}

/* 页面切换动画 */
.page {
    display: none;
    animation: fadeIn 0.5s ease;
}

.page.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 下载页面样式 */
.download-hero {
    padding-top: 150px;
}

.version-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.version-tab {
    padding: 12px 30px;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 15px;
}

.version-tab:hover,
.version-tab.active {
    background: var(--gradient-primary);
    color: #000;
    border-color: transparent;
}

.download-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 40px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
}

.download-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 50px rgba(0, 212, 255, 0.2);
}

.download-card.featured {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(0, 255, 136, 0.05) 100%);
}

.download-card.featured::before {
    content: '推荐';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: #000;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.card-icon {
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 24px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.card-title {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 10px;
}

.card-version {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.card-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 25px;
    line-height: 1.7;
}

.card-features {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 12px;
}

.card-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.card-features li::before {
    content: '●';
    color: var(--primary-color);
    font-size: 8px;
}

.card-btn {
    width: 100%;
    padding: 16px;
}

.system-info {
    max-width: 600px;
    margin: 60px auto 0;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 40px;
}

.system-info h3 {
    font-size: 22px;
    margin-bottom: 25px;
    text-align: center;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.info-item {
    display: flex;
    justify-content: space-between;
    padding: 15px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 10px;
}

.info-label {
    color: var(--text-secondary);
}

.info-value {
    color: var(--primary-color);
    font-weight: 600;
}

/* 404页面 */
.error-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 100px 20px;
    position: relative;
}

.error-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 30% 30%, rgba(255, 107, 53, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 70% 70%, rgba(0, 212, 255, 0.1) 0%, transparent 50%);
}

.error-content {
    position: relative;
    z-index: 1;
}

.error-code {
    font-size: 180px;
    font-weight: 900;
    line-height: 1;
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 20px;
    text-shadow: 0 0 60px rgba(255, 107, 53, 0.3);
}

.error-title {
    font-size: 36px;
    margin-bottom: 15px;
}

.error-desc {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.error-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.error-illustration {
    margin: 50px auto;
    width: 200px;
    height: 200px;
    position: relative;
}

.illustration-circle {
    width: 100%;
    height: 100%;
    border: 3px dashed rgba(255, 107, 53, 0.5);
    border-radius: 50%;
    animation: spin 20s linear infinite;
}

@keyframes spin {
    100% { transform: rotate(360deg); }
}

.illustration-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    box-shadow: 0 0 40px rgba(255, 107, 53, 0.5);
}

/* 滚动动画 */
.scroll-animate {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.scroll-animate.visible {
    opacity: 1;
    transform: translateY(0);
}