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

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --dark-bg: #0f172a;
    --darker-bg: #020617;
    --card-bg: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --gradient-start: #2563eb;
    --gradient-end: #7c3aed;
}

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

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

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    color: white;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(37, 99, 235, 0.6);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: white;
}

.btn-large {
    padding: 16px 48px;
    font-size: 18px;
}

.btn-play {
    padding: 8px 20px;
    font-size: 14px;
}

/* 导航栏 */
.navbar {
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.nav-brand .logo {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--accent-color);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: white;
    transition: all 0.3s;
}

/* 英雄区域 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--darker-bg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(124, 58, 237, 0.15) 0%, transparent 50%);
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: 80px;
    font-weight: 900;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 28px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-weight: 300;
}

.hero-description {
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-visual {
    animation: fadeInRight 1s ease-out 0.3s both;
}

.hero-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}

.card-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 48px;
    font-weight: 800;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 10px;
}

/* 游戏特色 */
.features {
    padding: 100px 0;
    background: var(--dark-bg);
}

.section-title {
    font-size: 48px;
    font-weight: 800;
    text-align: center;
    margin-bottom: 60px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.feature-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.2);
}

.feature-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 地图列表 */
.maps {
    padding: 100px 0;
    background: var(--darker-bg);
}

.maps-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.8;
}

.maps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.map-item {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s;
}

.map-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    background: linear-gradient(135deg, var(--card-bg), rgba(37, 99, 235, 0.1));
}

.map-id {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.map-name {
    font-size: 18px;
    font-weight: 600;
}

.map-category {
    display: inline-block;
    margin-top: 10px;
    padding: 4px 12px;
    background: rgba(37, 99, 235, 0.2);
    border-radius: 20px;
    font-size: 12px;
    color: var(--primary-color);
}

/* 军衔系统 */
.ranks {
    padding: 100px 0;
    background: var(--dark-bg);
}

.ranks-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.8;
}

.ranks-timeline {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.rank-item {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    transition: all 0.3s;
}

.rank-item:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 30px rgba(245, 158, 11, 0.2);
}

.rank-number {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent-color), #d97706);
    border-radius: 50%;
    line-height: 40px;
    font-weight: 700;
    margin-bottom: 15px;
}

.rank-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.rank-level {
    color: var(--text-secondary);
    font-size: 14px;
}

.rank-item.high-rank {
    border-color: var(--accent-color);
    background: linear-gradient(135deg, var(--card-bg), rgba(245, 158, 11, 0.1));
}

.rank-item.top-rank {
    border: 2px solid var(--accent-color);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.2), var(--card-bg));
}

/* 游戏规则 */
.rules {
    padding: 100px 0;
    background: var(--darker-bg);
}

.rules-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
    color: var(--text-secondary);
    font-size: 18px;
    line-height: 1.8;
}

.rules-cta {
    text-align: center;
    margin-bottom: 50px;
}

.rules-preview {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.rules-preview p {
    font-size: 18px;
    margin-bottom: 20px;
}

.rules-preview ul {
    list-style: none;
    padding-left: 0;
}

.rules-preview li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    color: var(--text-secondary);
}

.rules-preview li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* CTA区域 */
.cta {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    text-align: center;
}

.cta-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    background: var(--darker-bg);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 24px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.7;
}

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

.footer-section ul li {
    margin-bottom: 10px;
}

.footer-section ul a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

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

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 60px;
    }

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

    .hero-visual {
        order: -1;
    }

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

@media (max-width: 768px) {
    .navbar .container {
        padding: 15px;
    }

    .nav-menu {
        position: fixed;
        top: 60px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 60px);
        background: var(--dark-bg);
        flex-direction: column;
        justify-content: center;
        transition: left 0.3s;
    }

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

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-title {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 20px;
    }

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

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

    .section-title {
        font-size: 36px;
    }

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

    .card-stats {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .stat-number {
        font-size: 36px;
    }

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

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 80px 0;
    }

    .features,
    .maps,
    .ranks,
    .rules {
        padding: 60px 0;
    }

    .maps-grid,
    .ranks-timeline {
        grid-template-columns: 1fr;
    }

    .hero-card {
        padding: 30px 20px;
    }
}