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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #fff;
    background: #1a1a2e;
    min-height: 100vh;
}

header {
    background: linear-gradient(90deg, #f59e0b, #ef4444);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.nav {
    display: flex;
    gap: 35px;
}

.nav a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.nav a:hover {
    color: #fff;
    text-decoration: underline;
}

.hero {
    background: url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=三角洲行动游戏画面，科技感场景，战斗场景，高清画质&image_size=landscape_16_9') no-repeat center center;
    background-size: cover;
    padding: 60px 0;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 30px;
}

.hero-card {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(245, 158, 11, 0.3);
}

.hero-card h1 {
    font-size: 32px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-card p {
    color: rgba(255,255,255,0.9);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 12px;
    text-align: justify;
}

.btn-purchase {
    background: #fff;
    color: #ef4444;
    border: none;
    padding: 15px 40px;
    font-size: 16px;
    font-weight: bold;
    border-radius: 8px;
    cursor: pointer;
    margin-top: 20px;
    transition: all 0.3s;
}

.btn-purchase:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.hero-card .tagline {
    font-size: 12px !important;
    color: rgba(255,255,255,0.8) !important;
    margin-top: 15px !important;
    text-align: center !important;
}

.feature-highlights {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.highlight-card {
    width: 180px;
    height: 180px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transition: transform 0.3s;
}

.highlight-card:hover {
    transform: translateY(-5px);
}

.highlight-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.features {
    padding: 50px 0;
    background: rgba(0,0,0,0.3);
}

.features-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.feature-card {
    background: rgba(255,255,255,0.05);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s;
}

.feature-card:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-3px);
}

.feature-card h3 {
    color: #f59e0b;
    font-size: 16px;
    margin-bottom: 10px;
}

.feature-card p {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    line-height: 1.6;
}

.modules {
    padding: 50px 0;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
}

.module-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

.module-content h2 {
    text-align: center;
    font-size: 24px;
    color: #fff;
    margin-bottom: 25px;
}

.module-content p {
    color: rgba(255,255,255,0.9);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
    text-align: justify;
}

.cases {
    padding: 50px 0;
    background: rgba(0,0,0,0.3);
}

.cases h2 {
    text-align: center;
    font-size: 24px;
    color: #fff;
    margin-bottom: 30px;
}

.cases-grid {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.case-card {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    border-radius: 12px;
    padding: 25px;
    transition: transform 0.3s;
}

.case-card:hover {
    transform: translateY(-3px);
}

.case-card h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 10px;
}

.case-card p {
    color: rgba(255,255,255,0.9);
    font-size: 13px;
    line-height: 1.6;
}

.advantages {
    padding: 50px 0;
    background: rgba(0,0,0,0.2);
}

.advantages h2 {
    text-align: center;
    font-size: 24px;
    color: #fff;
    margin-bottom: 30px;
}

.advantages-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
}

.advantages-content p {
    color: rgba(255,255,255,0.8);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
    text-align: justify;
}

.comparison {
    padding: 50px 0;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.comparison h2 {
    text-align: center;
    font-size: 24px;
    color: #fff;
    margin-bottom: 30px;
}

.comparison-grid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 30px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.comparison-card {
    background: rgba(0,0,0,0.2);
    border-radius: 12px;
    padding: 25px;
}

.comparison-card h3 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 15px;
}

.comparison-card p {
    font-size: 13px;
    line-height: 1.8;
    margin-bottom: 8px;
}

.comparison-card .before {
    color: #f87171;
    font-weight: bold;
}

.comparison-card .after {
    color: #6ee7b7;
    font-weight: bold;
}

.reasons {
    padding: 50px 0;
    background: rgba(0,0,0,0.3);
}

.reasons h2 {
    text-align: center;
    font-size: 24px;
    color: #f59e0b;
    margin-bottom: 30px;
}

.reasons-list {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 30px;
}

.reason-item {
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.faq {
    padding: 50px 0;
    background: rgba(0,0,0,0.2);
}

.faq h2 {
    text-align: center;
    font-size: 24px;
    color: #f59e0b;
    margin-bottom: 30px;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 30px;
}

.faq-item {
    background: rgba(255,255,255,0.05);
    border-radius: 10px;
    padding: 20px 25px;
    margin-bottom: 15px;
    border: 1px solid rgba(255,255,255,0.1);
}

.faq-item h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 10px;
}

.faq-item p {
    color: rgba(255,255,255,0.7);
    font-size: 13px;
    line-height: 1.6;
}

.purchase {
    padding: 50px 0;
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

.purchase-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 30px;
    text-align: center;
}

.purchase-content h2 {
    font-size: 28px;
    color: #fff;
    margin-bottom: 15px;
}

.purchase-content p {
    color: rgba(255,255,255,0.9);
    font-size: 15px;
    margin-bottom: 30px;
}

.purchase-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.purchase-card {
    background: rgba(255,255,255,0.15);
    border-radius: 15px;
    padding: 30px;
    border: 2px solid rgba(255,255,255,0.2);
    transition: all 0.3s;
}

.purchase-card:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-3px);
}

.purchase-card.featured {
    border-color: #fff;
    transform: scale(1.05);
}

.purchase-card h3 {
    color: #fff;
    font-size: 18px;
    margin-bottom: 15px;
}

.purchase-card .price {
    font-size: 36px;
    font-weight: bold;
    color: #fff;
    margin-bottom: 10px;
}

.purchase-card .discount {
    font-size: 12px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 20px;
}

.btn-buy {
    background: #fff;
    color: #ef4444;
    border: none;
    padding: 12px 30px;
    font-size: 14px;
    font-weight: bold;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-buy:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

footer {
    background: #1a1a2e;
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
}

.footer-content p {
    color: rgba(255,255,255,0.6);
    font-size: 13px;
    line-height: 1.8;
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
        padding: 0 15px;
    }

    .nav {
        gap: 20px;
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero-card h1 {
        font-size: 24px;
    }

    .features-grid,
    .cases-grid,
    .comparison-grid,
    .purchase-grid {
        grid-template-columns: 1fr;
    }

    .purchase-card.featured {
        transform: none;
    }

    .highlight-card {
        width: 140px;
        height: 140px;
    }
}