:root {
    --bu-bg: #f3e8ff;
    --bu-surface: #ffffff;
    --bu-border: rgba(139, 92, 246, 0.12);
    --bu-accent: #8b5cf6;
    --bu-pink: #ec4899;
    --bu-text-main: #2e1065;
    --bu-text-sub: #6d28d9;
    --bu-shadow-inset: inset -4px -4px 10px rgba(139, 92, 246, 0.05), inset 4px 4px 10px rgba(255, 255, 255, 0.9);
    --bu-shadow-out: 8px 8px 20px rgba(139, 92, 246, 0.08);
    --bu-shadow-hover: 12px 12px 30px rgba(139, 92, 246, 0.15);
    --bu-radius: 24px;
    --bu-radius-sm: 12px;
}
body { margin: 0; background-color: var(--bu-bg); color: var(--bu-text-main); font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif; -webkit-font-smoothing: antialiased; }
.bu-header-spacer { padding: 20px 0; background: transparent; }
.bu-navbar { max-width: 1400px; margin: 0 auto; height: 72px; background: var(--bu-surface); border-radius: 50px; border: 1px solid var(--bu-border); display: flex; align-items: center; justify-content: space-between; padding: 0 30px; box-sizing: border-box; box-shadow: var(--bu-shadow-inset), var(--bu-shadow-out); }
.bu-logo img { height: 26px; filter: drop-shadow(0 0 5px var(--bu-accent)); }
.bu-menu { display: flex; gap: 35px; }
.bu-menu a { text-decoration: none; color: var(--bu-text-sub); font-weight: 700; font-size: 14px; transition: 0.3s; }
.bu-menu a:hover { color: var(--bu-pink); text-shadow: 0 0 5px rgba(236,72,153,0.3); }
.bu-container { max-width: 1400px; margin: 0 auto 50px; padding: 0 24px; box-sizing: border-box; }
.bu-notice { background: var(--bu-surface); border-radius: var(--bu-radius); border: 1px solid var(--bu-border); padding: 18px 24px; box-shadow: var(--bu-shadow-inset), var(--bu-shadow-out); font-size: 13px; color: var(--bu-text-main); line-height: 1.6; display: flex; align-items: center; gap: 12px; }
.bu-notice i { color: var(--bu-pink); font-size: 18px; }
.bu-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 16px; }
.bu-card { background-color: var(--bu-surface); border: 1px solid var(--bu-border); border-radius: var(--bu-radius); padding: 16px; text-decoration: none; transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275); box-shadow: var(--bu-shadow-inset), var(--bu-shadow-out); display: flex; flex-direction: column; position: relative; overflow: hidden; }
.bu-card:hover { transform: translateY(-6px); box-shadow: var(--bu-shadow-inset), var(--bu-shadow-hover); border-color: var(--bu-accent); }
.bu-img-box { width: 100%; aspect-ratio: 1; background: #faf5ff; border-radius: 16px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; border: 1px solid rgba(139,92,246,0.05); }
.bu-img-box img { width: 60%; height: 60%; object-fit: contain; opacity: 0.9; transition: 0.3s; }
.bu-card:hover .bu-img-box img { opacity: 1; transform: scale(1.05); }
.bu-name { font-size: 13px; font-weight: 700; color: var(--bu-text-main); height: 38px; line-height: 1.4; overflow: hidden; margin-bottom: 12px; }
.bu-meta { display: flex; justify-content: space-between; align-items: center; margin-top: auto; border-top: 1px solid #f3e8ff; padding-top: 10px; }
.bu-price { color: var(--bu-pink); font-weight: 800; font-size: 16px; }
.bu-sell { font-size: 11px; color: var(--bu-text-sub); }
.bu-tag { position: absolute; top: 12px; left: 12px; background: rgba(236, 72, 153, 0.1); color: var(--bu-pink); font-size: 10px; padding: 2px 6px; border-radius: 6px; font-weight: bold; border: 1px solid var(--bu-pink); }
.bu-detail-grid { display: grid; grid-template-columns: 1.30fr 1fr; gap: 32px; }
.bu-box { background: var(--bu-surface); border-radius: var(--bu-radius); padding: 35px; border: 1px solid var(--bu-border); box-shadow: var(--bu-shadow-inset), var(--bu-shadow-out); }
.bu-h1 { font-size: 24px; font-weight: 800; margin: 0 0 20px 0; color: var(--bu-text-main); }
.bu-input { width: 100%; height: 46px; background: #faf5ff; border: 1px solid var(--bu-border); border-radius: var(--bu-radius-sm); padding: 0 15px; font-size: 14px; box-sizing: border-box; outline: none; transition: 0.3s; margin-top: 8px; color: var(--bu-text-main); }
.bu-input:focus { border-color: var(--bu-accent); background: var(--bu-surface); box-shadow: var(--bu-shadow-inset); }
.bu-label { display: block; font-size: 12px; font-weight: 700; color: var(--bu-text-sub); }
.bu-btn { width: 100%; height: 50px; background: var(--bu-accent); color: var(--bu-surface); border: none; border-radius: var(--bu-radius-sm); font-size: 15px; font-weight: 700; cursor: pointer; transition: 0.3s; margin-top: 20px; box-shadow: 0 8px 20px rgba(139, 92, 246, 0.2); }
.bu-btn:hover { background: var(--bu-pink); box-shadow: 0 8px 20px rgba(236, 72, 153, 0.2); transform: translateY(-1px); }
.bu-footer { background: var(--bu-surface); border-top: 1px solid var(--bu-border); padding: 50px 0; margin-top: 80px; text-align: center; }
@media (max-width: 1400px) { .bu-grid { grid-template-columns: repeat(5, 1fr); } }
@media (max-width: 1000px) { .bu-grid { grid-template-columns: repeat(3, 1fr); } .bu-detail-grid { grid-template-columns: 1fr; } }
@media (max-width: 600px) { .bu-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; } }