body { margin: 0; background: #f4ebe1; color: #5c534d; font-family: 'Georgia', serif; font-size: 13px; line-height: 1.6; }
.fos-layout { max-width: 900px; margin: 40px auto; padding: 0 15px; box-sizing: border-box; }
.fos-header { border: 2px solid #5c534d; padding: 25px; background: #faf5ec; margin-bottom: 30px; text-align: center; }
.fos-logo img { height: 26px; filter: grayscale(1) contrast(1.2); margin-bottom: 15px; }
.fos-nav { display: flex; justify-content: center; gap: 30px; border-top: 1px solid #5c534d; padding-top: 15px; }
.fos-nav a { color: #8c7f76; text-decoration: none; font-size: 13px; font-weight: bold; }
.fos-nav a:hover, .fos-nav .active { color: #5c534d; border-bottom: 2px solid #5c534d; }
.fos-notice-bar { border: 1px dashed #5c534d; padding: 15px; background: #faf5ec; margin-bottom: 30px; }
.fos-notice-title { font-weight: bold; color: #5c534d; margin-bottom: 5px; }
.fos-cat-hd { font-size: 14px; font-weight: bold; margin: 35px 0 15px; border-bottom: 1px solid #5c534d; padding-bottom: 5px; color: #5c534d; }
.fos-list { display: flex; flex-direction: column; gap: 20px; }
.fos-card { display: flex; background: #fff; border: 1px solid #5c534d; padding: 20px; text-decoration: none; color: #5c534d; align-items: center; justify-content: space-between; transition: 0.2s; box-shadow: 4px 4px 10px rgba(92,83,77,0.08); }
.fos-list a:nth-child(even) .fos-card { transform: rotate(1.2deg); }
.fos-list a:nth-child(odd) .fos-card { transform: rotate(-1.2deg); }
.fos-card:hover { transform: rotate(0deg) !important; box-shadow: 6px 6px 15px rgba(92,83,77,0.15); }
.fos-info-side { display: flex; align-items: center; gap: 20px; flex: 1; }
.fos-img-box { width: 70px; height: 70px; background: #faf5ec; border: 1px solid #5c534d; display: flex; align-items: center; justify-content: center; overflow: hidden; flex-shrink: 0; }
.fos-img-box img { width: 55%; height: 55%; object-fit: contain; filter: grayscale(1); }
.fos-name { font-size: 14px; font-weight: bold; color: #5c534d; margin-bottom: 5px; }
.fos-price { font-size: 16px; font-weight: bold; color: #5c534d; }
.fos-tag-auto { font-size: 9px; border: 1px solid #5c534d; padding: 1px 5px; color: #5c534d; background: #faf5ec; }
.fos-trade-node { border: 2px solid #5c534d; display: flex; flex-wrap: wrap; background: #faf5ec; }
.fos-media-side { flex: 0 0 35%; padding: 40px; display: flex; align-items: center; border-right: 1px solid #5c534d; box-sizing: border-box; background: #fff; }
.fos-media-side img { width: 100%; filter: grayscale(1); }
.fos-form-side { flex: 1; padding: 40px; min-width: 320px; box-sizing: border-box; }
.fos-title { font-size: 18px; font-weight: bold; margin-bottom: 15px; border-bottom: 1px solid #5c534d; padding-bottom: 10px; }
.fos-tag-status { display: inline-block; padding: 3px 8px; border: 1px solid #5c534d; font-size: 11px; margin-bottom: 20px; color: #8c7f76; }
.fos-price-node { margin-bottom: 25px; padding: 20px; background: #fff; border: 1px solid #5c534d; display: flex; justify-content: space-between; align-items: center; }
.fos-input { width: 100%; height: 42px; background: #fff; border: 1px solid #5c534d; color: #5c534d; padding: 0 15px; box-sizing: border-box; outline: none; }
.fos-input:focus { background: #faf5ec; }
.fos-btn-submit { width: 100%; height: 46px; background: #5c534d; color: #fff; border: none; cursor: pointer; font-size: 13px; font-weight: bold; transition: 0.2s; }
.fos-btn-submit:hover { opacity: 0.9; }
.fos-btn-submit:disabled { background: #eee; color: #aaa; border: 1px solid #ccc; cursor: not-allowed; }
.fos-desc-box { margin-top: 30px; border: 1px solid #5c534d; padding: 30px; background: #faf5ec; }
.fos-desc-title { font-size: 12px; font-weight: bold; margin-bottom: 15px; border-left: 2px solid #5c534d; padding-left: 10px; }
.fos-ls-container { border: 1px solid #5c534d; background: #fff; }
.fos-ls-th { display: flex; padding: 12px 20px; background: #faf5ec; border-bottom: 1px solid #5c534d; color: #8c7f76; }
.fos-ls-tr { display: flex; padding: 16px 20px; border-bottom: 1px solid #5c534d; align-items: center; }
.fos-ls-tr:last-child { border-bottom: none; }
.fos-cl-name { flex: 2; } .fos-cl-name a { color: #5c534d; text-decoration: none; font-weight: bold; }
.fos-cl-mode, .fos-cl-price, .fos-cl-stock { flex: 0.8; text-align: center; }
.fos-cl-opt { flex: 0.6; text-align: right; }
.fos-btn-go { display: inline-block; background: #5c534d; color: #fff; padding: 4px 15px; text-decoration: none; font-size: 11px; font-weight: bold; }
.fos-checkout-node { background: #faf5ec; border: 1px solid #5c534d; padding: 30px; max-width: 520px; margin: 40px auto; }
.fos-data-row { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px dashed #5c534d; }
.fos-gateway-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin-top: 15px; }
.fos-gateway-btn { background: #fff; border: 1px solid #5c534d; padding: 15px; cursor: pointer; display: flex; align-items: center; justify-content: center; }
.fos-gateway-btn img { height: 24px; filter: grayscale(1); }
.fos-auth-node { background: #faf5ec; border: 1px solid #5c534d; overflow: hidden; max-width: 440px; margin: 40px auto; }
.fos-auth-tab { display: flex; background: #fff; border-bottom: 1px solid #5c534d; }
.fos-auth-link { flex: 1; text-align: center; line-height: 48px; color: #8c7f76; text-decoration: none; border-right: 1px solid #5c534d; }
.fos-auth-link:last-child { border-right: none; }
.fos-auth-link.is-active { background: #faf5ec; color: #5c534d; font-weight: bold; position: relative; }
.fos-auth-link.is-active::after { content: ""; position: absolute; bottom: 0; left: 0; width: 100%; height: 2px; background: #5c534d; }
.fos-mini-table { margin-top: 20px; border: 1px solid #5c534d; overflow: hidden; }
.fos-mini-row { display: flex; padding: 10px; border-bottom: 1px solid #5c534d; align-items: center; color: #8c7f76; }
.fos-mini-h { background: #fff; }
.fos-m-node { border: 1px solid #5c534d; margin-bottom: 10px; background: #fff; overflow: hidden; }
.fos-m-trigger { padding: 12px; display: flex; justify-content: space-between; cursor: pointer; }
.fos-footer { border-top: 1px solid #5c534d; padding-top: 25px; margin-top: 40px; font-size: 11px; text-align: center; color: #8c7f76; }
.fos-footer a { color: #8c7f76; text-decoration: none; margin: 0 10px; }
@media (max-width: 768px) {
    .fos-card { flex-direction: column; align-items: flex-start; gap: 15px; }
    .fos-footer-meta { width: 100%; display: flex; justify-content: space-between; }
    .fos-trade-node { flex-direction: column; }
    .fos-media-side { border-right: none; }
}