body { margin: 0; background: #fcf8f0; color: #2d3a33; font-family: 'Georgia', 'SimSun', serif; font-size: 13px; line-height: 1.6; }
.bos-layout { max-width: 900px; margin: 40px auto; padding: 0 15px; box-sizing: border-box; }
.bos-header { border: 3px double #2d3a33; padding: 25px; background: #fcf8f0; margin-bottom: 30px; text-align: center; position: relative; }
.bos-header::after { content: "◆ 标本馆 ◆"; position: absolute; top: -10px; left: 50%; transform: translateX(-50%); background: #fcf8f0; padding: 0 15px; color: #2d3a33; font-size: 11px; font-weight: bold; }
.bos-logo img { height: 26px; filter: grayscale(1) sepia(0.5) saturate(3) hue-rotate(120deg) brightness(0.9); margin-bottom: 15px; }
.bos-nav { display: flex; justify-content: center; gap: 30px; border-top: 1px solid #2d3a33; padding-top: 15px; }
.bos-nav a { color: #5c6e62; text-decoration: none; font-size: 13px; font-weight: bold; }
.bos-nav a:hover, .bos-nav .active { color: #2d3a33; border-bottom: 2px solid #2d3a33; }
.bos-notice-bar { border: 1px dashed #2d3a33; padding: 15px; background: #fcf8f0; margin-bottom: 30px; }
.bos-notice-title { font-weight: bold; color: #2d3a33; margin-bottom: 5px; }
.bos-cat-hd { font-size: 14px; font-weight: bold; margin: 35px 0 15px; border-bottom: 1px solid #2d3a33; padding-bottom: 5px; color: #2d3a33; }
.bos-list { display: flex; flex-direction: column; gap: 20px; }
.bos-card { display: flex; background: #fcf8f0; border: 3px double #2d3a33; padding: 20px; text-decoration: none; color: #2d3a33; align-items: center; justify-content: space-between; position: relative; }
.bos-card:hover { background: #fffefb; border-color: #2d3a33; }
.bos-info-side { display: flex; align-items: center; gap: 20px; flex: 1; }
.bos-img-box { width: 60px; height: 60px; background: #fbf9f4; border: 1px solid #2d3a33; display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0; }
.bos-img-box img { width: 50%; height: 50%; object-fit: contain; filter: grayscale(1) sepia(1) saturate(3) hue-rotate(120deg); }
.bos-name { font-size: 13px; font-weight: bold; color: #2d3a33; margin-bottom: 5px; }
.bos-price { font-size: 15px; font-weight: bold; color: #2d3a33; }
.bos-tag-auto { position: absolute; top: 12px; right: 20px; font-size: 9px; border: 1px solid #2d3a33; padding: 1px 5px; color: #2d3a33; background: rgba(45,58,51,0.08); }
.bos-trade-node { border: 3px double #2d3a33; display: flex; flex-wrap: wrap; background: #fcf8f0; }
.bos-media-side { flex: 0 0 35%; padding: 40px; display: flex; align-items: center; border-right: 1px solid #2d3a33; box-sizing: border-box; background: #fbf9f4; }
.bos-media-side img { width: 100%; filter: grayscale(1); }
.bos-form-side { flex: 1; padding: 40px; min-width: 320px; box-sizing: border-box; }
.bos-title { font-size: 16px; font-weight: bold; margin-bottom: 15px; border-bottom: 1px solid #2d3a33; padding-bottom: 10px; }
.bos-tag-status { display: inline-block; padding: 3px 8px; border: 1px solid #2d3a33; font-size: 10px; margin-bottom: 20px; color: #5c6e62; }
.bos-price-node { margin-bottom: 25px; padding: 20px; background: #fbf9f4; border: 1px solid #2d3a33; display: flex; justify-content: space-between; align-items: center; }
.bos-input { width: 100%; height: 42px; background: #fff; border: 1px solid #2d3a33; color: #2d3a33; padding: 0 15px; box-sizing: border-box; outline: none; }
.bos-input:focus { border-color: #2d3a33; }
.bos-btn-submit { width: 100%; height: 46px; background: #2d3a33; color: #fff; border: none; cursor: pointer; font-size: 12px; font-weight: bold; transition: 0.2s; }
.bos-btn-submit:hover { opacity: 0.9; }
.bos-btn-submit:disabled { background: #f5f0e8; color: #a5b5ad; border: 1px solid #2d3a33; cursor: not-allowed; }
.bos-desc-box { margin-top: 30px; border: 1px solid #2d3a33; padding: 30px; background: #fcf8f0; }
.bos-desc-title { font-size: 11px; font-weight: bold; margin-bottom: 15px; border-left: 2px solid #2d3a33; padding-left: 10px; }
.bos-ls-container { border: 1px solid #2d3a33; background: #fff; }
.bos-ls-th { display: flex; padding: 12px 20px; background: #fcf8f0; border-bottom: 1px solid #2d3a33; color: #5c6e62; }
.bos-ls-tr { display: flex; padding: 16px 20px; border-bottom: 1px solid #2d3a33; align-items: center; }
.bos-ls-tr:last-child { border-bottom: none; }
.bos-cl-name { flex: 2; } .bos-cl-name a { color: #2d3a33; text-decoration: none; font-weight: bold; }
.bos-cl-mode, .bos-cl-price, .bos-cl-stock { flex: 0.8; text-align: center; }
.bos-cl-opt { flex: 0.6; text-align: right; }
.bos-btn-go { display: inline-block; background: #2d3a33; color: #fff; padding: 4px 15px; text-decoration: none; font-size: 11px; font-weight: bold; }
.bos-checkout-node { background: #fcf8f0; border: 1px solid #2d3a33; padding: 30px; max-width: 520px; margin: 40px auto; }
.bos-data-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px dashed #2d3a33; }
.bos-money-total { font-size: 18px; font-weight: bold; color: #2d3a33; }
.bos-gateway-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 15px; }
.bos-gateway-btn { background: #fff; border: 1px solid #2d3a33; padding: 15px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.bos-gateway-btn img { height: 24px; filter: grayscale(1); }
.bos-auth-node { background: #fcf8f0; border: 1px solid #2d3a33; overflow: hidden; max-width: 440px; margin: 40px auto; }
.bos-auth-tab { display: flex; background: #fff; border-bottom: 1px solid #2d3a33; }
.bos-auth-link { flex: 1; text-align: center; line-height: 48px; color: #5c6e62; text-decoration: none; border-right: 1px solid #2d3a33; }
.bos-auth-link:last-child { border-right: none; }
.bos-auth-link.is-active { background: #fcf8f0; color: #2d3a33; font-weight: bold; position: relative; }
.bos-auth-link.is-active::after { content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: #2d3a33; }
.bos-mini-table { margin-top: 20px; border: 1px solid #2d3a33; overflow: hidden; }
.bos-mini-row { display: flex; padding: 10px; border-bottom: 1px solid #2d3a33; align-items: center; color: #5c6e62; }
.bos-mini-h { background: #fff; }
.bos-m-node { border: 1px solid #2d3a33; margin-bottom: 10px; background: #fff; overflow: hidden; }
.bos-m-trigger { padding: 12px; display: flex; justify-content: space-between; cursor: pointer; }
.bos-footer { border-top: 1px solid #2d3a33; padding-top: 25px; margin-top: 40px; font-size: 11px; text-align: center; color: #5c6e62; }
.bos-footer a { color: #5c6e62; text-decoration: none; margin: 0 10px; }
@media (max-width: 768px) {
    .bos-grid { grid-template-columns: 1fr; }
    .bos-trade-node { flex-direction: column; }
    .bos-media-side { border-right: none; }
}