.tool-box{background:#fff;border:2px solid #1a1a1a;border-radius:14px;padding:22px;margin:10px 0}
.tool-box textarea{width:100%;box-sizing:border-box;border:1px solid #ccc;border-radius:10px;padding:12px;font:inherit;margin:10px 0}
.tool-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.tool-actions button,.copy-btn{background:#1a1a1a;color:#fff;border:none;border-radius:8px;padding:10px 18px;font-weight:700;cursor:pointer}
.tool-actions button:hover,.copy-btn:hover{opacity:.85}
.ht-output{margin-top:14px;border-top:1px dashed #ccc;padding-top:12px}
.ht-marked{background:#fafaf7;border:1px solid #eee;border-radius:10px;padding:14px;margin-top:8px;max-height:340px;overflow:auto;line-height:1.7}
.ht-marked mark{background:#ffe08a;border-radius:3px;padding:0 2px}
.prompt-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px}
.prompt-card{background:#fff;border:1px solid #e2e2dc;border-radius:12px;padding:16px}
.prompt-card h3{margin:0 0 4px}
.prompt-pre{white-space:pre-wrap;background:#f6f6f2;border:1px solid #eee;border-radius:8px;padding:12px;font-size:.85rem;line-height:1.5;max-height:220px;overflow:auto}
.ba-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}
@media(max-width:760px){.ba-grid{grid-template-columns:1fr}}
.ba-col{border-radius:12px;padding:16px;border:1px solid #e2e2dc}
.ba-before{background:#fdf6f6}.ba-after{background:#f4faf4}
.ba-col h3{margin:0 0 8px;font-size:.85rem;text-transform:uppercase;letter-spacing:.08em}
.ba-text{line-height:1.65}
.ba-notes{margin:10px 0 24px}
.ba-notes summary{cursor:pointer;font-weight:700}
.ba-notes li{margin:6px 0}
@media(max-width:820px){.nav a{font-size:.85rem}}