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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #0d0d0d 100%);
    color: #FFFFFF;
    line-height: 1.6;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 10% 20%, #87001d22 0%, transparent 20%),
                radial-gradient(circle at 90% 80%, #ff505022 0%, transparent 20%);
    z-index: -1;
    animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 0.8; }
}

.main-nav {
    background: linear-gradient(90deg, #87001d 0%, #ff5050 100%);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 4px 20px rgba(255, 80, 80, 0.3);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.nav-links a {
    color: #FFFFFF;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.9rem;
}

.nav-links a:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

.main-header {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, rgba(135, 0, 29, 0.2) 0%, rgba(255, 80, 80, 0.2) 100%);
    margin-bottom: 3rem;
}

.header-content h1 {
    font-size: 2.5rem;
    margin: 1.5rem 0;
    background: linear-gradient(90deg, #FFFFFF 0%, #ff5050 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.header-content p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.info-section, .features-section, .links-section, .security-section, .faq-section, .support-section {
    max-width: 1200px;
    margin: 0 auto 4rem;
    padding: 0 2rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
    background: linear-gradient(90deg, #87001d 0%, #ff5050 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.info-content p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: linear-gradient(135deg, rgba(135, 0, 29, 0.1) 0%, rgba(255, 80, 80, 0.1) 100%);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 80, 80, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(255, 80, 80, 0.2);
}

.feature-card h3 {
    color: #ff5050;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.features-detail {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.feature-block {
    background: linear-gradient(135deg, rgba(135, 0, 29, 0.1) 0%, rgba(255, 80, 80, 0.1) 100%);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #ff5050;
}

.feature-block h3 {
    color: #ff5050;
    margin-bottom: 1rem;
}

.links-container {
    background: linear-gradient(135deg, rgba(135, 0, 29, 0.1) 0%, rgba(255, 80, 80, 0.1) 100%);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 80, 80, 0.2);
}

.warning-note {
    color: #ff5050;
    font-weight: 600;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.mirrors-list {
    margin-bottom: 2rem;
}

.mirror-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    margin-bottom: 1rem;
    border-radius: 5px;
    border-left: 4px solid #ff5050;
}

.link-text {
    word-break: break-all;
    font-family: monospace;
    font-size: 1.1rem;
}

.copy-btn {
    background: linear-gradient(90deg, #87001d 0%, #ff5050 100%);
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.copy-btn:hover {
    opacity: 0.9;
}

.security-tips {
    background: rgba(0, 0, 0, 0.3);
    padding: 1.5rem;
    border-radius: 5px;
    border-left: 4px solid #87001d;
}

.security-tips h3 {
    color: #ff5050;
    margin-bottom: 1rem;
}

.security-tips ul {
    list-style-position: inside;
}

.security-tips li {
    margin-bottom: 0.5rem;
}

.security-content, .faq-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.security-block, .faq-item {
    background: linear-gradient(135deg, rgba(135, 0, 29, 0.1) 0%, rgba(255, 80, 80, 0.1) 100%);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid #87001d;
}

.security-block h3, .faq-item h3 {
    color: #ff5050;
    margin-bottom: 1rem;
}

.support-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.support-content p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.guidance {
    background: linear-gradient(135deg, rgba(135, 0, 29, 0.1) 0%, rgba(255, 80, 80, 0.1) 100%);
    padding: 2rem;
    border-radius: 10px;
    border: 1px solid rgba(255, 80, 80, 0.2);
}

.guidance h3 {
    color: #ff5050;
    margin-bottom: 1rem;
}

.main-footer {
    background: linear-gradient(90deg, #87001d 0%, #ff5050 100%);
    padding: 2rem;
    text-align: center;
    margin-top: 4rem;
}

.footer-content p {
    margin-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        justify-content: center;
    }
    
    .header-content h1 {
        font-size: 2rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .mirror-link {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}