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<div class="viewport-preview-frame">    <div class="viewport-card" style="width:@CurrentPreset.ContentMaxWidth">        <div class="viewport-card-label">@_activePreset (글 최대폭 @CurrentPreset.ContentMaxWidth)</div>        <div class="post-editor" style="max-width:none">            <input class="post-title-input" placeholder="제목" @bind="_title" @bind:event="oninput" />            <input class="post-slug-input" placeholder="슬러그 (비워두면 자동 생성)" @bind="_slug" @bind:event="oninput" />            <BlockEditor Blocks="_blocks" />            <div class="post-editor-actions">                <button type="button" @onclick="@(() => Save(publish: false))" disabled="@_isSaving">@(_isSaving ? "저장 중..." : "임시 저장")</button>                <button type="button" class="post-publish-btn" @onclick="@(() => Save(publish: true))" disabled="@_isSaving">발행</button>                @if (!string.IsNullOrEmpty(_statusMessage))                {                    <span>@_statusMessage</span>                }            </div>        </div>    </div></div>