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6px}details.asec>summary{list-style:none;cursor:pointer;user-select:none;display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:15px;font-weight:700;color:#fff;padding:8px 0 6px;border-bottom:1px solid var(--line)}details.asec>summary::-webkit-details-marker{display:none}details.asec>summary:before{content:"▸";color:var(--teal-hi);width:12px;transition:transform .12s}details.asec[open]>summary:before{transform:rotate(90deg)}details.asec>summary:hover{color:var(--teal-hi)}details.asec>summary:focus-visible{outline:2px solid var(--teal);outline-offset:2px}.asec-body{padding:4px 0 10px}.open-end{fill:var(--editor);stroke:#e0a030;stroke-width:1.5;pointer-events:none}.snap-target{fill:#f5d54740;stroke:var(--sel);stroke-width:1.5;pointer-events:none}