.source-tools { margin: 20px 0; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); overflow: hidden; }
.source-tools details + details { border-top: 1px solid var(--line); }
.source-tools summary { padding: 15px 18px; min-height: 48px; cursor: pointer; color: var(--green); font-weight: 600; font-size: 13px; }
.source-tools summary:focus-visible { outline: 2px solid var(--green); outline-offset: -4px; }
.source-tools-explanation { padding: 0 18px 15px; color: var(--muted); font-size: 12px; }
.source-edition-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 12px; padding: 0 16px 16px; }
.source-edition-card { padding: 16px; border: 1px solid var(--line); border-radius: 8px; min-width: 0; }
.source-edition-card[aria-current="true"] { border-color: var(--green); background: var(--green-soft); }
.source-edition-card h3 { font-family: var(--serif); font-size: 18px; font-weight: 400; line-height: 1.4; }
.source-edition-author, .source-edition-count { margin-top: 8px; font-size: 12px; color: var(--muted); }
.source-edition-links { display: flex; flex-wrap: wrap; gap: 0 16px; margin-top: 10px; }
.source-tools-link { display: inline-flex; align-items: center; min-height: 44px; font-size: 12px; overflow-wrap: anywhere; }
.source-edition-choose { display: block; width: 100%; min-height: 44px; padding: 10px; margin-top: 10px; border-radius: 6px; background: var(--green); color: var(--surface); font-size: 12px; }
.source-edition-choose:disabled { background: transparent; color: var(--green); opacity: 1; cursor: default; }
.source-glossary-list { margin: 0; padding: 0 18px 15px; display: grid; grid-template-columns: minmax(70px, 1fr) minmax(0, 3fr); gap: 12px 18px; }
.source-glossary-list dt { font-family: var(--serif); font-size: 18px; overflow-wrap: anywhere; }
.source-glossary-list dd { margin: 0; font-size: 13px; }
.source-glossary-list dd a { font-size: 11px; color: var(--muted); }
.source-tools-error { padding: 14px 18px; color: var(--muted); font-size: 12px; }