:root {
    --loa-bg: #e3beb5;
    --loa-card-bg: #faf3f0;
    --loa-border: rgba(224, 90, 71, 0.25);
    --loa-border-hover: rgba(224, 90, 71, 0.8);
    --loa-text: #2f1d18;
    --loa-sub: #785a50;
    --loa-accent: #e05a47;
    --loa-font: 'Georgia', 'Times New Roman', serif;
}

body {
    margin: 0; background: var(--loa-bg); color: var(--loa-text);
    font-family: var(--loa-font); font-size: 13px; -webkit-font-smoothing: antialiased;
    /* 紫砂泥梨皮质感天然矿物纤维背景 */
    background-image: radial-gradient(rgba(47, 29, 24, 0.05) 1px, transparent 1px);
    background-size: 16px 16px;
}

.loa-header {
    position: fixed; top: 0; width: 100%; height: 56px;
    background: rgba(227, 190, 181, 0.95); backdrop-filter: blur(8px);
    z-index: 2000; border-bottom: 2px solid var(--loa-border);
}

.loa-inner {
    max-width: 1200px; margin: 0 auto; height: 100%;
    display: flex; align-items: center; justify-content: space-between; padding: 0 20px;
}

.loa-logo-nav { display: flex; align-items: center; gap: 30px; }
.loa-logo img { height: 20px; }
.loa-nav { display: flex; list-style: none; gap: 24px; margin: 0; padding: 0; }
.loa-nav a { color: var(--loa-sub); text-decoration: none; font-weight: bold; }
.loa-nav a:hover, .loa-nav a.active { color: var(--loa-accent); }
.loa-user-zone { display: flex; align-items: center; gap: 16px; }
.loa-btn-login { background: var(--loa-accent); color: #fff; padding: 6px 16px; border: 2px solid var(--loa-border); text-decoration: none; font-size: 11px; font-weight: bold; }
.loa-avatar { width: 26px; height: 26px; border-radius: 50%; border: 1px solid var(--loa-border); }
.loa-m-trigger { display: none; color: var(--loa-text); font-size: 20px; cursor: pointer; }

/* 留白通告 */
.loa-notice-bar { margin: 80px auto 20px; max-width: 1200px; padding: 0 20px; }
.loa-notice-inner { border: 2px solid var(--loa-border); padding: 12px 24px; background: var(--loa-card-bg); display: flex; align-items: center; }
.loa-notice-dot { width: 6px; height: 6px; background: var(--loa-accent); border-radius: 50%; margin-right: 12px; }

/* 页脚 */
.loa-footer { padding: 40px 0; background: #ebd0c9; border-top: 2px solid var(--loa-border); margin-top: 60px; }
.loa-footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.loa-copyright { font-size: 11px; color: var(--loa-sub); display: flex; align-items: center; }
.loa-status-indicator { width: 6px; height: 6px; background: var(--loa-accent); border-radius: 50%; margin-right: 10px; }

/* 布局 080: 顶部压力阀门通告 ➡️ 垂直单列重组机械管道商品行 */
.loa-home-wrap { max-width: 800px; margin: 40px auto; padding: 0 20px; min-height: 80vh; }

/* 顶部压力阀门通告 */
.loa-pressure-notice {
    background: var(--loa-card-bg); border: 2px solid var(--loa-border);
    padding: 30px; margin-bottom: 50px; text-align: center; position: relative;
}
.loa-notice-title { font-size: 11px; font-weight: bold; color: var(--loa-accent); margin-bottom: 8px; text-transform: uppercase; }

.loa-cat-hd { font-size: 14px; font-weight: bold; color: var(--loa-text); margin: 40px 0 25px; display: flex; align-items: center; }
.loa-cat-hd::after { content: ""; flex: 1; height: 2px; background: var(--loa-border); margin-left: 20px; }
.loa-cat-hd::before { content: ":: "; color: var(--loa-accent); margin-right: 8px; }

/* 垂直管道容器 */
.loa-pipeline-container { position: relative; display: flex; flex-direction: column; gap: 40px; }

/* 垂直导管物理线 */
.loa-vertical-pipe {
    position: absolute; left: 30px; top: 0; bottom: 0;
    width: 6px; background: linear-gradient(90deg, #6b5a50, #c8beb5 50%, #3a2d26);
    border-radius: 3px; z-index: 1; box-shadow: inset 1px 1px 3px rgba(0,0,0,0.3);
}

/* 管道连接直角卡片 */
.loa-card-conduit {
    display: block; background: var(--loa-card-bg); text-decoration: none; transition: 0.3s;
    padding: 24px 24px 24px 60px; position: relative; z-index: 2;
    border: 2px solid var(--loa-border);
}
.loa-card-conduit:hover { border-color: var(--loa-border-hover); box-shadow: 0 4px 15px rgba(224, 90, 71, 0.15); }
.loa-card-conduit:hover .loa-name { color: var(--loa-accent); }

/* 金属联轴气阀 */
.loa-pipe-joint {
    position: absolute; left: 23px; top: 50%; width: 20px; height: 12px;
    background: var(--loa-accent); border-radius: 2px; transform: translateY(-50%);
    z-index: 3; box-shadow: 1px 1px 3px rgba(0,0,0,0.4);
}

.loa-img-box { width: 100%; aspect-ratio: 2.2; display: flex; align-items: center; justify-content: center; margin-bottom: 20px; background: rgba(0,0,0,0.02); }
.loa-img-box img { width: 35%; height: 35%; object-fit: contain; }
.loa-name { font-size: 14px; height: 38px; color: var(--loa-text); line-height: 1.5; overflow: hidden; margin-bottom: 15px; }
.loa-footer-meta { display: flex; justify-content: space-between; align-items: center; }
.loa-price { font-size: 16px; font-weight: bold; color: var(--loa-accent); }
.loa-sell-count { font-size: 11px; color: var(--loa-sub); }
.loa-tag-auto { position: absolute; top: 12px; right: 20px; font-size: 9px; color: var(--loa-accent); border: 1px solid var(--loa-border); padding: 1px 6px; }

/* Detail Pages */
.loa-trade-wrap { padding: 40px 10px; min-height: 80vh; }
.loa-trade-node { max-width: 900px; margin: 0 auto; border: 2px solid var(--loa-border); display: flex; flex-wrap: wrap; background: var(--loa-card-bg); }
.loa-media-side { flex: 0 0 32%; background: rgba(0,0,0,0.02); padding: 30px; display: flex; align-items: center; border-right: 2px solid var(--loa-border); }
.loa-media-side img { width: 100%; height: auto; }
.loa-form-side { flex: 1; padding: 40px; min-width: 320px; }
.loa-title { font-size: 22px; font-weight: 700; color: var(--loa-text); margin-bottom: 10px; }
.loa-tag-status { display: inline-block; padding: 3px 12px; border: 2px solid var(--loa-border); color: #fff; background: var(--loa-accent); font-size: 11px; margin-bottom: 25px; }
.loa-price-node { margin-bottom: 30px; padding: 20px; background: var(--loa-bg); border: 2px solid var(--loa-border); display: flex; justify-content: space-between; align-items: center; }
.loa-price-val { font-size: 26px; font-weight: 800; color: var(--loa-accent); }
.loa-field { margin-bottom: 20px; }
.loa-label { display: block; font-size: 11px; color: var(--loa-sub); margin-bottom: 8px; }
.loa-input { width: 100%; height: 44px; background: var(--loa-bg); border: 2px solid var(--loa-border); color: var(--loa-text); padding: 0 20px; box-sizing: border-box; outline: none; }
.loa-input:focus { border-color: var(--loa-accent); }
.loa-btn-submit { width: 100%; height: 48px; background: var(--loa-accent); color: #fff; border: 2px solid var(--loa-border); cursor: pointer; font-size: 14px; font-weight: 700; transition: 0.3s; }
.loa-btn-submit:hover { opacity: 0.8; }
.loa-btn-submit:disabled { background: #5a3c34; color: #92756d; border: 1px solid var(--loa-border); cursor: not-allowed; }
.loa-desc-box { max-width: 900px; margin: 20px auto 0; border: 2px solid var(--loa-border); padding: 30px; background: var(--loa-card-bg); color: var(--loa-sub); }
.loa-desc-title { font-size: 12px; font-weight: 700; color: var(--loa-text); margin-bottom: 15px; border-left: 2px solid var(--loa-accent); padding-left: 10px; }

/* Queries & Lists */
.loa-query-wrap { max-width: 520px; margin: 80px auto; padding: 0 20px; min-height: 70vh; }
.loa-query-node { background: var(--loa-card-bg); border: 2px solid var(--loa-border); padding: 30px; margin-bottom: 20px; }
.loa-btn-prime { background: var(--loa-accent); color: #fff; border: 2px solid var(--loa-border); padding: 12px 30px; font-weight: 700; font-size: 13px; cursor: pointer; width: 100%; }

@media (max-width: 768px) {
    .loa-vertical-pipe, .loa-pipe-joint { display: none; }
    .loa-card-conduit { padding: 24px; }
    .loa-header { position: relative; }
    .loa-nav { position: fixed; top: 56px; left: -100%; width: 100%; height: 100vh; background: var(--loa-bg); flex-direction: column; padding: 40px; transition: 0.3s; gap: 30px; }
    .loa-nav.is-open { left: 0; }
    .loa-m-trigger { display: block; }
}