/* 工程类小工具共用样式（steel-weight / earthwork / supervision-fee / design-fee / bid-score） */
.et-wrap { max-width: 1040px; margin: 0 auto; }
.et-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; box-shadow: var(--shadow-sm); margin-bottom: 20px; }
.et-card h2 { font-size: 15px; font-weight: 700; color: var(--heading); margin: 0 0 14px; }
.et-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 14px 16px; }
.et-field { display: flex; flex-direction: column; gap: 6px; font-size: 13px; color: var(--text-secondary); }
.et-field input, .et-field select, .et-field textarea { border: 1px solid var(--border); border-radius: 7px; padding: 9px 10px; font-size: 14px; color: var(--heading); background: #fff; width: 100%; box-sizing: border-box; font-family: inherit; }
.et-field textarea { min-height: 170px; font-family: var(--font-mono); font-size: 13px; line-height: 1.7; resize: vertical; }
.et-field input:focus, .et-field select:focus, .et-field textarea:focus { outline: 2px solid var(--brand-200); border-color: var(--brand-500); }
.et-field small { font-size: 12px; color: var(--text-muted); line-height: 1.6; }
.et-actions { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-top: 16px; }
.et-result { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-top: 16px; }
.et-stat { background: var(--brand-50); border: 1px solid var(--brand-200); border-radius: 10px; padding: 12px 14px; }
.et-stat span { display: block; font-size: 12px; color: var(--text-secondary); margin-bottom: 4px; }
.et-stat b { font-family: var(--font-mono); font-size: 20px; color: var(--brand-700); font-variant-numeric: tabular-nums; word-break: break-all; }
.et-stat.is-main { background: #fff4ec; border-color: #fbd0b1; }
.et-stat.is-main b { color: var(--accent-dark, #c9530f); }
.et-formula { margin-top: 14px; padding: 12px 14px; background: #f8fafc; border: 1px dashed var(--border); border-radius: 10px; font-size: 13px; color: var(--text-secondary); line-height: 1.9; font-family: var(--font-mono); word-break: break-all; white-space: pre-wrap; }
.et-msg { min-height: 20px; margin-top: 10px; font-size: 13px; }
.et-msg.is-error { color: #DC2626; }
.et-msg.is-ok { color: var(--teal, #0e9f8e); }
.et-scroll { overflow-x: auto; }
.et-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.et-table th, .et-table td { border: 1px solid var(--border); padding: 8px 10px; text-align: right; white-space: nowrap; }
.et-table th { background: #f1f5f9; color: var(--heading); font-weight: 600; text-align: center; }
.et-table td:first-child, .et-table td.is-text { text-align: left; }
.et-table td.is-num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.et-table tr.is-top td { background: #fff4ec; font-weight: 600; }
.et-table tfoot td { font-weight: 700; background: #f8fafc; }
.et-del { border: 1px solid var(--border); background: #fff; color: #DC2626; border-radius: 6px; padding: 3px 9px; cursor: pointer; font-size: 12px; }
.et-hint { font-size: 12px; color: var(--text-muted); margin-top: 14px; line-height: 1.8; }
.et-empty { color: var(--text-muted); font-size: 13px; padding: 14px 0; }