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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
    color: #e0e0e0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    max-width: 600px;
    width: 100%;
    background: #2a2a2a;
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    padding: 40px;
    text-align: center;
}

.logo {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 10px;
    letter-spacing: -1px;
}

.subtitle {
    font-size: 1rem;
    color: #999;
    margin-bottom: 40px;
}

.claim-btn {
    background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
    color: #1a1a1a;
    border: none;
    padding: 16px 48px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
}

.claim-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 255, 255, 0.3);
}

.claim-btn:active {
    transform: translateY(0);
}

.claim-btn:disabled {
    background: #444;
    color: #666;
    cursor: not-allowed;
    box-shadow: none;
}

.result-box {
    display: none;
    background: #1f1f1f;
    border: 1px solid #444;
    border-radius: 8px;
    padding: 24px;
    margin-top: 30px;
    text-align: left;
}

.result-box.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-item {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid #333;
}

.result-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.result-label {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-value {
    font-size: 1rem;
    color: #fff;
    word-break: break-all;
    font-family: 'Courier New', monospace;
}

.error-message {
    background: #3a1f1f;
    border: 1px solid #5a2f2f;
    color: #ff6b6b;
    padding: 16px;
    border-radius: 8px;
    margin-top: 20px;
    display: none;
}

.error-message.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.success-message {
    background: #1f3a1f;
    border: 1px solid #2f5a2f;
    color: #6bff6b;
    padding: 16px;
    border-radius: 8px;
    margin-top: 20px;
    display: none;
}

.success-message.show {
    display: block;
    animation: fadeIn 0.5s ease;
}

.footer {
    margin-top: 40px;
    font-size: 0.85rem;
    color: #666;
}

.footer a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 30px 20px;
    }
    
    .logo {
        font-size: 2rem;
    }
    
    .claim-btn {
        padding: 14px 36px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 24px 16px;
    }
    
    .logo {
        font-size: 1.75rem;
    }
    
    .subtitle {
        font-size: 0.9rem;
    }
    
    .claim-btn {
        width: 100%;
        padding: 14px 24px;
    }
}