@charset "utf-8";

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 20px;
    display: flex;
    flex-direction: column;
}

.product-banner {
    position: relative;
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0) 33.3%);
    display: flex;
    align-items: center;
    padding-left: 40px;
}

.product-info {
    color: white;
    max-width: 50%;
}

.product-title {
    font-size: 2.3rem;
    font-weight: 400;
    margin-bottom: 14px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.product-description {
    font-size: 1.1rem;
    line-height: 1.4;
    margin-bottom: 10px;
}

.main-content {
    display: flex;
    gap: 30px;
    flex: 1;
}

.sidebar {
    flex: 0 0 240px;
    background: white;
    border-radius: 12px;
    padding: 19px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.nav-title {
    font-size: 1.14rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eaeaea;
    color: #2c3e50;
    text-align: center;
    margin-left: auto;
    margin-right: auto;
}

.nav-list {
    list-style: none;
}

.nav-item {
    padding: 10px 12px;
    margin-bottom: 6px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 1.04rem;
}

.nav-item:hover {
    background: #f1f3f8;
    color: inherit;
}

.nav-item.active {
    background: linear-gradient(to right, #70A8F0, #95C5F7, #883EAA);
    color: white;
}

.content-area {
    flex: 1;
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.section-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: #2c3e50;
}

.section-content {
    margin-bottom: 30px;
    line-height: 1.8;
}

.feature-list {
    list-style: none;
    margin-bottom: 20px;
}

.feature-list li {
    padding: 8px 0;
    position: relative;
    padding-left: 25px;
}

.feature-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
    font-weight: bold;
}

.price {
    font-size: 2rem;
    font-weight: 700;
    color: #e74c3c;
    margin-bottom: 20px;
}

.original-price {
    font-size: 1.2rem;
    text-decoration: line-through;
    color: #95a5a6;
    margin-left: 10px;
}

.order-btn {
    display: inline-block;
    background: #e74c3c;
    color: white;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(231, 76, 60, 0.3);
}

.order-btn:hover {
    background: #c0392b;
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(231, 76, 60, 0.4);
}

footer {
    background-color: #f5f7fa;
    color: #666;
    padding: 30px 0 20px 0;
    margin-top: 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-section {
    flex: 1 1 250px;
    margin-bottom: 20px;
}

.footer-section h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #2c3e50;
    position: relative;
    padding-bottom: 10px;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background-color: #3498db;
}

.footer-links {
    list-style: none;
    padding: 0;
}

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

.footer-links a {
    color: #555;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #3498db;
}

.contact-info {
    list-style: none;
    padding: 0;
}

.contact-info li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: #e0e0e0;
    border-radius: 50%;
    color: #555;
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background-color: #3498db;
    color: white;
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
    color: #888;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        flex: none;
        margin-bottom: 20px;
    }
    
    .product-overlay {
        padding-left: 20px;
    }
    
    .product-info {
        max-width: 80%;
    }
    
    .product-title {
        font-size: 1.8rem;
    }
}

hr.dashed-line {
    border-top: 1px dashed #e2e4f8;
    margin-top: 16px;
    margin-bottom: 16px;
}

@keyframes policeLight {
  0%, 33% {
    color: purple;
  }
  34%, 77% {
    color: white;
  }
  78%, 100% {
    color: purple;
  }
}

.update-date {
  animation: policeLight 1s linear infinite;
  display: inline;
}

.release-tag-pre {
  display: inline-block;
  vertical-align: middle;
  margin-left: 8px;
  padding: 1px 14px 3px 14px;
  border: 1px solid #b8860b;
  border-radius: 999px;
  color: #b8860b;
  font-size: 14px;
  line-height: 1;
  position: relative;
  top: -1.5px;
}

.warning {
  font-size: 14.2px;
}