:root {
    --primary: #f13131;
    --bg: #f5f5f5;
    --text: #333;
}

* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
    color: var(--text);
    background: var(--bg);
}

.wrap { width: 990px; margin: 0 auto; }

.site-header {
    background: #fff;
    border-bottom: 3px solid var(--primary);
}

.site-header .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 72px;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.site-header nav a {
    margin: 0 12px;
    color: #666;
    text-decoration: none;
}

.btn {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 4px;
    border: 1px solid #ddd;
    background: #fff;
    color: #333;
    text-decoration: none;
    cursor: pointer;
}

.btn-primary {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

.hero {
    background: #fff;
    margin-top: 20px;
    padding: 40px;
    border-radius: 8px;
}

.hero-actions { margin-top: 20px; }
.hero-actions .btn { margin-right: 10px; }

.quick-lots, .notice {
    background: #fff;
    margin-top: 20px;
    padding: 24px;
    border-radius: 8px;
}

.lot-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.lot-card {
    display: block;
    padding: 16px;
    border: 1px solid #eee;
    border-radius: 6px;
    text-decoration: none;
    color: inherit;
}

.lot-card strong { display: block; margin-bottom: 8px; color: var(--primary); }
.lot-card span { font-size: 12px; color: #888; }

.site-footer {
    margin: 24px 0;
    text-align: center;
    color: #888;
    font-size: 12px;
}