:root{--bg:#f6f8fa;--panel:#fff;--border:#d0d7de;--border-muted:#e5e9ee;--text:#1f2328;--muted:#656d76;--accent:#0969da;--accent-soft:#ddf4ff;--success:#1f883d;--danger:#cf222e;--radius:8px;--topbar-height:56px;--mono:ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans,Helvetica,Arial,sans-serif}*,:before,:after{box-sizing:border-box}[hidden]{display:none!important}body{margin:0}button,input,select,textarea{font:inherit;color:inherit}.muted{color:var(--muted)}.topbar{height:var(--topbar-height);color:#fff;background:#24292f;justify-content:space-between;align-items:center;gap:16px;padding:0 16px;display:flex}.brand{white-space:nowrap;align-items:center;gap:10px;font-size:16px;font-weight:600;display:flex}.brand__logo{border-radius:6px;display:block;box-shadow:0 0 0 1px #ffffff26}.toolbar{align-items:center;gap:8px;display:flex;overflow-x:auto}.toolbar__divider{background:#ffffff40;flex:none;width:1px;height:20px;margin:0 4px}.icon{flex:none;display:block}.btn--icon{width:34px;height:32px;color:inherit;justify-content:center;align-items:center;padding:0;text-decoration:none;display:inline-flex}.btn--with-icon{align-items:center;gap:6px;display:inline-flex}.btn--with-icon .count-badge{margin-left:0}.btn{border:1px solid var(--border);background:var(--panel);cursor:pointer;white-space:nowrap;border-radius:6px;padding:5px 12px;font-size:14px;line-height:20px}.btn:hover{background:#f3f4f6}.btn:disabled{opacity:.55;cursor:default}.btn--primary{background:var(--success);border-color:var(--success);color:#fff}.btn--primary:hover:not(:disabled){background:#1a7f37}.btn--small{padding:3px 10px;font-size:13px}.btn--dashed{color:var(--muted);background:0 0;border-style:dashed}.btn--dashed:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}.topbar .btn{color:#fff;background:0 0;border-color:#ffffff4d}.topbar .btn:hover{background:#ffffff1a}.topbar .btn--primary,.topbar .btn--primary:hover{background:var(--success);border-color:var(--success)}.icon-btn{width:28px;height:28px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:6px;place-items:center;font-size:14px;display:inline-grid}.icon-btn:hover:not(:disabled){color:var(--text);background:#eef1f4}.icon-btn--danger:hover:not(:disabled){color:var(--danger)}.icon-btn:disabled{opacity:.3;cursor:default}.tag{color:#7d4e00;background:#fff8c5;border:1px solid #eac54f;border-radius:999px;padding:0 6px;font-size:11px}.builder{height:calc(100vh - var(--topbar-height));grid-template-columns:220px minmax(360px,1fr) minmax(400px,1.15fr);display:grid}.panel{background:var(--panel);border-right:1px solid 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0;border:0;flex:1;align-items:center;gap:8px;min-width:0;padding:4px;display:flex}.block-card__chevron{width:10px;color:var(--muted);font-size:12px}.block-card__label{white-space:nowrap;font-size:14px;font-weight:600}.block-card__summary{white-space:nowrap;text-overflow:ellipsis;min-width:0;color:var(--muted);font-size:13px;overflow:hidden}.block-card__actions{flex-shrink:0;display:flex}.block-card__body{border-top:1px solid var(--border-muted);padding:0 12px 12px}.block-card.is-collapsed .block-card__body{display:none}.drop-indicator{background:var(--accent);border-radius:2px;height:3px}.empty-state{border:2px dashed var(--border);border-radius:var(--radius);text-align:center;color:var(--muted);padding:40px 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0;border:0;border-radius:4px;padding:0 6px;font-size:12px}.format-toolbar__button:hover{color:var(--text);background:#e7ebef}.format-toolbar__button--bold{font-weight:700}.format-toolbar__button--italic{font-family:Georgia,serif;font-style:italic}.format-toolbar__button--strike{text-decoration:line-through}.format-toolbar__button--code{font-family:var(--mono)}.emoji-picker{z-index:5;border:1px solid var(--border);background:var(--panel);border-radius:8px;width:290px;padding:8px;position:absolute;top:calc(100% + 4px);right:0;box-shadow:0 8px 24px #00000026}.emoji-picker input{border:1px solid var(--border);border-radius:6px;width:100%;margin-bottom:6px;padding:5px 8px}.emoji-picker__grid{grid-template-columns:repeat(8,1fr);max-height:200px;display:grid;overflow-y:auto}.emoji-picker__item{cursor:pointer;background:0 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#0003}.toast.is-visible{opacity:1;transform:translate(-50%)}.toast--error{background:var(--danger)}@media (width<=1100px){.topbar{height:auto;min-height:var(--topbar-height);flex-wrap:wrap;padding:8px 16px}.builder{height:auto;display:block}.panel{border-right:0;border-bottom:1px solid var(--border);overflow:visible}.library__items{flex-flow:wrap}.library__group{padding-bottom:12px}.library__footer{position:static}}