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

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
}

nav a {
    color: white;
    text-decoration: none;
    font-size: 16px;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

main {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px 20px;
    width: 100%;
}

footer {
    background: #333;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: auto;
}

footer p {
    color: #FFFFFF;
    margin-bottom: 20px;
    opacity: 0.8;
    font-size: 20px;
    text-decoration: none;
    overflow: hidden;
    margin-right: 30px;
}

footer a {
    color: #FFFFFF;
    margin-bottom: 20px;
    opacity: 0.8;
    font-size: 20px;
    text-decoration: none;
    overflow: hidden;
    margin-right: 30px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: 15px;
}

.card-title {
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 10px;
    color: #333;
}

.card-info {
    color: #666;
    font-size: 14px;
    margin-bottom: 5px;
}

.card-price {
    color: #e74c3c;
    font-size: 20px;
    font-weight: bold;
    margin-top: 10px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-decoration: none;
    border-radius: 5px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    transition: opacity 0.3s;
}

.btn:hover {
    opacity: 0.9;
}

.btn-secondary {
    background: #95a5a6;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

.detail-image {
    width: 100%;
    max-width: 600px;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.detail-info {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.detail-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 15px;
    color: #333;
}

.detail-price {
    font-size: 32px;
    color: #e74c3c;
    font-weight: bold;
    margin-bottom: 20px;
}

.detail-description {
    line-height: 1.8;
    color: #555;
    margin-bottom: 20px;
}

.contact-info {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 5px;
    margin-top: 20px;
}

.contact-item {
    margin-bottom: 10px;
    font-size: 16px;
}

.phone-hidden {
    color: #667eea;
    cursor: pointer;
    text-decoration: underline;
}

.phone-visible {
    color: #333;
    font-weight: bold;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #333;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.auth-container {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.auth-title {
    text-align: center;
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.auth-link {
    text-align: center;
    margin-top: 20px;
}

.auth-link a {
    color: #667eea;
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

.publish-fee {
    background: #fff3cd;
    border: 1px solid #ffc107;
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
}

.publish-fee strong {
    color: #856404;
    font-size: 18px;
}

.banner {
    width: 100%;
    margin-bottom: 30px;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.banner-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.page-title {
    font-size: 32px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #333;
    text-align: center;
}