/* 板书模块 A1：复用 shell.css 的深蓝变量 */
.board-wrap{max-width:1080px;margin:0 auto;padding:24px 18px 60px}
.board-title{font-size:22px;color:var(--deep);letter-spacing:1px;margin-bottom:6px}
.board-sub{font-size:13px;color:var(--muted);margin-bottom:18px}
.board-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:18px;margin-bottom:14px}
.board-card h2{font-size:16px;color:var(--deep);margin-bottom:10px}
.board-list{display:grid;gap:12px;grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}
.doc-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow);border-top:3px solid var(--blue)}
.doc-card h3{font-size:16px;color:var(--deep);margin-bottom:6px}
.doc-meta{font-size:12.5px;color:var(--muted);line-height:1.7}
.tag{display:inline-block;font-size:11px;padding:1px 7px;border-radius:5px;
  background:var(--pale);color:var(--blue);margin-right:6px}
.tag.blank{background:#f0f2f5;color:#8b98a6}
.board-form{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin:8px 0}
.board-form input,.board-form select{font:inherit;padding:8px 10px;border:1px solid var(--line);
  border-radius:8px;background:var(--pale2);min-width:120px}
.board-form button{font:inherit;padding:8px 14px;border:0;border-radius:8px;
  background:var(--blue);color:#fff;cursor:pointer}
.board-form button:hover{background:var(--deep)}
.board-error{background:#fdf1f0;border:1px solid #f0c9c5;color:#b4483f;
  padding:10px 12px;border-radius:8px;margin-bottom:14px;font-size:13px}
.board-ok{background:#eff8f1;border:1px solid #b9dfc4;color:#2f7a46;
  padding:10px 12px;border-radius:8px;margin-bottom:14px;font-size:13px}
.board-subtitle{font-size:15px;color:var(--deep);margin:16px 0 8px}
.board-divider{display:flex;align-items:center;gap:10px;color:var(--muted);
  font-size:12px;margin:16px 0 4px}
.board-divider::before,.board-divider::after{content:"";flex:1;height:1px;background:var(--line2)}
.board-table{width:100%;border-collapse:collapse;font-size:13px}
.board-table th,.board-table td{padding:7px 8px;border-bottom:1px solid var(--line2);
  text-align:left;vertical-align:top}
.board-table th{color:var(--muted);font-weight:600}
.board-code{font-family:Consolas,monospace;font-size:12px;background:var(--pale2);
  padding:2px 5px;border-radius:4px;word-break:break-all}
.board-actions{display:flex;gap:6px;flex-wrap:wrap}