:root {
    --primary-color: #000000;
    --bg-color: #ffffff;
    --card-bg: #f8f9fa;
}
body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--bg-color);
    color: #333;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
.header {
    padding: 40px 0;
    text-align: center;
}
.header h1 {
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--primary-color);
}
.search-container {
    max-width: 600px;
    margin: 0 auto 40px;
}
.input-group {
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    border-radius: 50px;
    overflow: hidden;
}
.form-control {
    border: none;
    padding: 15px 25px;
    font-size: 1.1rem;
}
.form-control:focus {
    box-shadow: none;
}
.btn-search {
    background-color: var(--primary-color);
    color: white;
    padding: 0 30px;
    font-weight: 500;
    border: none;
    transition: all 0.3s;
}
.btn-search:hover {
    background-color: #333;
    color: white;
}
.result-card {
    display: none;
    background-color: white;
    border: 1px solid #eee;
    border-radius: 20px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    margin-bottom: 50px;
}
.product-img {
    max-width: 100%;
    max-height: 500px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}
.info-label {
    color: #888;
    font-size: 0.9rem;
    margin-bottom: 2px;
}
.info-value {
    font-weight: 500;
    color: #222;
    margin-bottom: 15px;
}
.status-badge {
    background-color: #28a745;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 20px;
}
.footer {
    margin-top: auto;
    padding: 30px 0;
    text-align: center;
    color: #999;
    font-size: 0.9rem;
    border-top: 1px solid #f0f0f0;
}
@media (max-width: 768px) {
    .header h1 { font-size: 1.8rem; }
    .result-card { padding: 20px; }
}