OLDBOY/_PAGE/_MAIN/asset/top_bookmark.php
<link rel="stylesheet" type="text/css" href="<?php echo G5_URL; ?>/_PAGE/_MAIN/asset/top_bookmark.css">

<section class="Bookmark">
    <div class="Book_Menu" id="top-bookmark">
        <ul>
            <li>
                <a href="<?php echo G5_URL; ?>/_PAGE/asset/upbit/data_list.php" target="_blank"><button type="button"><i class="fa-solid fa-money-bill-1"></i> 자산 리스트</button></a>
                <a href="<?php echo G5_BBS_URL; ?>/board.php?bo_table=outline" target="_blank"><button type="button"><i class="fa-solid fa-book-open"></i> 자산 아웃라인</button></a>
                <a href="<?php echo G5_URL; ?>/_PAGE/data/upbit/asset/investment_movement_map.php" target="_blank"><button type="button"><i class="fa-solid fa-map"></i> 데이터 맵</button></a>
            </li>
            <li>
                <a href="#"><button type="button"><i class="fa-solid fa-building-columns"></i> 자산 1분봉</button></a>
            <a href="<?php echo G5_BBS_URL; ?>/board.php?bo_table=moving_assets" target="_blank"><button type="button"><i class="fa-solid fa-wallet"></i> 입/출금 보드</button></a>
            <a href="<?php echo G5_BBS_URL; ?>/board.php?bo_table=daemon_day_upbit" target="_blank"><button type="button"><i class="fa-solid fa-gear"></i> 매매 세팅</button></a>
            </li>
        </ul>
    </div>
    <div class="Book_Button">
        <button class="bookmark-toggle" id="bookmarkToggle"><i class="fa-solid fa-star"></i> 북마크</button>
    </div>
</section>

<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script>
$(document).ready(function() {
    const content = $('#top-bookmark');
    const storageKey = 'asset_status';

    // 3. 이전 상태 유지 (localStorage 확인)
    if (localStorage.getItem(storageKey) === 'open') {
        content.show();
    }

    // 2. 버튼 클릭 시 슬라이딩 토글
    $('#bookmarkToggle').on('click', function() {
        content.slideToggle(300, function() {
            // 상태 저장
            if (content.is(':visible')) {
                localStorage.setItem(storageKey, 'open');
            } else {
                localStorage.setItem(storageKey, 'closed');
            }
        });
    });
});
</script>