:root{--bg:#edf1f6;--surface:#fff;--surface-soft:#f8fafc;--ink:#0f172a;--muted:#64748b;--line:#d7dee8;--accent:#0f172a;--danger:#b91c1c;--ok:#0f766e}*{box-sizing:border-box}body{background:var(--bg);color:var(--ink);margin:0;font-family:Noto Sans CJK SC,Microsoft YaHei,PingFang SC,Arial,sans-serif}button,.button,select,input{font:inherit}button,.button{border:1px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;border-radius:8px;justify-content:center;align-items:center;padding:9px 13px;font-weight:850;text-decoration:none;display:inline-flex}button:hover,.button:hover{filter:brightness(1.08)}button:disabled,input:disabled,select:disabled{cursor:not-allowed;opacity:.55}.button.secondary,button.secondary{color:var(--accent);background:#fff}.button.disabled{pointer-events:none;opacity:.45}.app-shell{width:min(1720px,100vw - 36px);margin:0 auto;padding:24px 0 34px}.topbar{justify-content:space-between;align-items:center;gap:22px;margin-bottom:16px;display:flex}.topbar h1{margin:0;font-size:28px}.topbar>div:first-child{min-width:0}.topbar p{color:var(--muted);white-space:nowrap;text-overflow:ellipsis;margin:6px 0 0;overflow:hidden}.topbar-actions{place-items:center end;gap:8px;display:flex}.language-switch{border:1px solid var(--line);background:#fff;border-radius:999px;align-items:center;gap:3px;padding:3px;display:inline-flex}.language-switch button{color:#475569;background:0 0;border:0;border-radius:999px;min-width:34px;margin:0;padding:5px 9px;font-size:12px;font-weight:900}.language-switch button.active{background:var(--accent);color:#fff}.workspace{grid-template-columns:360px 1fr;gap:14px;display:grid}.control-panel,.preview-panel{background:var(--surface);border:1px solid var(--line);border-radius:10px}.control-panel{padding:16px}.panel-block{border-bottom:1px solid var(--line);margin-bottom:15px;padding-bottom:15px}.panel-block:last-child{border-bottom:0;margin-bottom:0;padding-bottom:0}.panel-block h2,.preview-head h2{margin:0 0 10px;font-size:16px}.panel-block input,.panel-block select{border:1px solid var(--line);background:#fff;border-radius:8px;width:100%;margin-bottom:9px;padding:9px 10px}.panel-block button,.panel-block .button{width:100%;margin-bottom:8px}.meta-list{gap:7px;margin-top:6px;display:grid}.meta-list div,.count-grid div{background:var(--surface-soft);border:1px solid var(--line);border-radius:8px;padding:8px 9px}.meta-list span,.count-grid span{color:var(--muted);margin-bottom:3px;font-size:11px;display:block}.meta-list strong{overflow-wrap:anywhere;font-size:12px;display:block}.completion-tile{border:1px solid var(--line);background:var(--surface-soft);border-radius:8px;margin-top:10px;padding:10px 11px}.completion-tile strong{font-size:13px;display:block}.completion-tile span{color:var(--muted);margin-top:4px;font-size:12px;display:block}.completion-tile.busy{background:#eff6ff;border-color:#bfdbfe}.completion-tile.done{background:#f0fdfa;border-color:#99f6e4}.count-grid{grid-template-columns:1fr 1fr;gap:7px;margin:10px 0;display:grid}.count-grid strong{font-size:18px}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger);font-weight:800}.preview-panel{min-width:0;overflow:hidden}.preview-head{border-bottom:1px solid var(--line);background:var(--surface-soft);justify-content:space-between;align-items:center;gap:12px;min-height:58px;padding:13px 16px;display:flex}.main-tabs{border:1px solid var(--line);background:#fff;border-radius:9px;gap:4px;padding:3px;display:inline-flex}.main-tabs button{color:#475569;background:0 0;border:0;border-radius:7px;margin:0;padding:6px 12px;font-size:13px;font-weight:900}.main-tabs button.active{background:var(--accent);color:#fff}.preview-head h2,.preview-head p{margin:0}.preview-head p,.preview-head span{color:var(--muted);font-size:12px}.preview-viewport{scrollbar-gutter:stable both-edges;overscroll-behavior:contain;background:#e5e7eb;height:min(820px,100vh - 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