:root{--ink: #0f172a;--ink-soft: #475569;--ink-faint: #64748b;--line: #e2e8f0;--line-strong: #cbd5e1;--bg: #f8fafc;--card: #ffffff;--accent: #0f766e;--accent-soft: #ccfbf1;--warn-bg: #fffbeb;--warn-line: #fcd34d;--warn-ink: #b45309;--danger: #dc2626;--radius: 12px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:15px;line-height:1.5}.app{display:grid;grid-template-columns:1fr;gap:28px;padding:24px;max-width:1600px;margin:0 auto}@media (min-width: 1024px){.app{grid-template-columns:minmax(380px,440px) 1fr;align-items:start;padding:32px;gap:40px}.stage{position:sticky;top:32px}}.controls{display:flex;flex-direction:column;gap:22px;min-width:0}.stage{display:flex;flex-direction:column;gap:16px;min-width:0}.section{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px;display:flex;flex-direction:column;gap:14px}.section>h2{margin:0;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-faint)}.field{display:flex;flex-direction:column;gap:7px}.field>label{font-size:13px;font-weight:700;color:var(--ink-soft)}.hint{font-size:12px;color:var(--ink-faint);margin:0}.seg{display:flex;flex-wrap:wrap;gap:6px}.seg button{flex:1 1 auto;padding:8px 12px;border:1px solid var(--line-strong);background:#fff;border-radius:9px;font:inherit;font-size:13px;font-weight:600;color:var(--ink-soft);cursor:pointer;white-space:nowrap}.seg button:hover{border-color:var(--ink-faint)}.seg button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 16px;border-radius:10px;border:1px solid var(--line-strong);background:#fff;font:inherit;font-size:14px;font-weight:700;color:var(--ink);cursor:pointer;text-decoration:none}.btn:hover{border-color:var(--ink-faint)}.btn:disabled,.btn[aria-disabled=true]{opacity:.45;pointer-events:none}.btn-primary{background:var(--ink);border-color:var(--ink);color:#fff}.btn-primary:hover{background:#1e293b}.btn-ghost{border-color:transparent;background:transparent;color:var(--ink-soft);font-size:13px;padding:6px 10px}.btn-ghost:hover{background:#f1f5f9;border-color:transparent}.actions{display:flex;flex-wrap:wrap;gap:10px}.slots{display:flex;flex-direction:column;gap:8px}.slot{display:flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:10px;padding:5px 6px}.slot-name{flex:1;min-width:0;text-align:center;font-size:13px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.arrow{border:none;background:#f1f5f9;border-radius:8px;width:34px;height:34px;flex-shrink:0;cursor:pointer;font-size:13px;color:#334155}.arrow:hover{background:#e2e8f0}.row-between{display:flex;align-items:center;justify-content:space-between;gap:10px}input[type=text],textarea{width:100%;padding:9px 11px;border:1px solid var(--line-strong);border-radius:9px;font:inherit;font-size:14px;color:var(--ink);background:#fff}textarea{resize:vertical;line-height:1.5}.results{display:flex;flex-direction:column;gap:5px}.results button{text-align:left;padding:8px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;font:inherit;font-size:13px;font-weight:600;cursor:pointer}.results button:hover{background:#f8fafc}.warn{margin:0;padding:9px 12px;border-radius:9px;background:var(--warn-bg);border:1px solid var(--warn-line);color:var(--warn-ink);font-size:13px}.error{margin:0;color:var(--danger);font-size:13px;font-weight:600}.meta{margin:0;font-size:12.5px;color:var(--ink-faint)}.meta b{color:var(--ink)}.preview{display:flex;align-items:center;justify-content:center;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;min-height:320px}.preview img{max-width:100%;max-height:calc(100vh - 230px);border-radius:10px;box-shadow:0 8px 30px #0f172a24}.preview .placeholder{color:var(--ink-faint);font-size:14px;display:flex;align-items:center;justify-content:center;width:100%;min-height:280px}.preview.busy{opacity:.55}details.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:0 16px}details.panel>summary{cursor:pointer;padding:13px 0;font-size:13px;font-weight:700;color:var(--ink-soft);list-style:none}details.panel>summary::-webkit-details-marker{display:none}details.panel>summary:before{content:"▸ ";color:var(--ink-faint)}details.panel[open]>summary:before{content:"▾ "}details.panel>.panel-body{padding:14px 0 16px;display:flex;flex-direction:column;gap:12px;border-top:1px solid var(--line)}.thread-item{display:flex;flex-direction:column;gap:6px}.thread-head{display:flex;justify-content:space-between;align-items:center;font-size:12px;font-weight:700;color:var(--ink-faint)}.preview.strip{justify-content:flex-start;gap:14px;overflow-x:auto;padding:16px}.slide{margin:0;display:flex;flex-direction:column;align-items:center;gap:6px}.preview.strip .slide img{max-height:calc(100vh - 300px);max-width:none}.slide figcaption{font-size:11px;font-weight:800;color:var(--ink-faint)}