.sf-lt-one-sticky-header{background-color:#fff;border-bottom:1px solid #e0e0e0;padding:0 1rem;display:flex;justify-content:space-between;align-items:center;height:50px;box-sizing:border-box;position:-webkit-sticky;position:sticky;top:0;z-index:1000;width:100%}.sf-lt-one-sticky-header__right{display:flex;gap:.5rem}.sf-lt-one-icon-button{background:0 0;border:none;cursor:pointer;padding:.5rem;color:#555;display:inline-flex;align-items:center;justify-content:center;border-radius:999px;transition:background-color .2s}.sf-lt-one-icon-button:hover{color:#000;background-color:#f0f0f0}.sf-lt-one-icon-button svg{width:24px;height:24px}.sf-lt-one-lecture-container{display:flex;height:calc(100vh - 50px)}body.admin-bar .sf-lt-one-lecture-container{height:calc(100vh - 50px - 32px)}.sf-lt-one-lecture-sidebar{width:300px;background-color:#f8f9fa;border-right:1px solid #e0e0e0;flex-shrink:0;height:100%;overflow-y:auto;transition:margin-left .3s ease-in-out}.sf-lt-one-sidebar-inner{padding:1.5rem}.sf-lt-one-content-area-wide{flex-grow:1;min-width:0;height:100%;overflow-y:auto}.sf-lt-one-sidebar-title{font-size:1.2rem;margin:0 0 1.5rem 0;padding-bottom:1rem;border-bottom:1px solid #ddd}.sf-lt-one-sidebar-title a{color:inherit;text-decoration:none}.sf-lt-one-sidebar-title a:hover{color:#0073aa}.sf-lt-one-sidebar-nav ol{list-style:none;padding:0;margin:0}.sf-lt-one-sidebar-nav__item a{display:block;padding:.75rem 1rem;margin:.2rem 0;border-radius:4px;color:#333;line-height:1.4;transition:background-color .2s,color .2s}.sf-lt-one-sidebar-nav__item a:hover{background-color:#e9ecef;text-decoration:none}.sf-lt-one-sidebar-nav__item.is-current a{background-color:#0073aa;color:#fff;font-weight:700}.sf-lt-one-sidebar-nav__item.is-current a:hover{background-color:#005a87}.sf-lt-one-content-header{padding:1rem 2rem;border-bottom:1px solid #eee;background-color:#fafafa}.sf-lt-one-breadcrumb{font-size:.9rem;color:#555}.sf-lt-one-breadcrumb__separator{margin:0 .5em}.sf-lt-one-breadcrumb__lecture-title{font-weight:500}.sf-lt-one-site-main{max-width:964px;margin:0 auto;padding:2rem 3rem}.sf-lt-one-entry-header{margin-bottom:2rem}.sf-lt-one-entry-title{margin:0;font-size:2.2rem;line-height:1.3}.sf-lt-one-entry-content p{margin-bottom:1.5em}.sf-lt-one-chapter-navigation{margin-top:3rem;border-top:1px solid #eee;padding-top:1.5rem}.sf-lt-one-nav-links{display:flex;justify-content:space-between}.sf-lt-one-nav-next,.sf-lt-one-nav-previous{max-width:48%}.sf-lt-one-nav-next{text-align:right}.sf-lt-one-nav-links a{display:block;padding:1rem;border:1px solid #ddd;border-radius:8px;transition:all .2s}.sf-lt-one-nav-links a:hover{background-color:#f5f5f5;border-color:#bbb;box-shadow:0 2px 4px rgba(0,0,0,.05)}.sf-lt-one-meta-nav{display:block;font-size:.8rem;color:#777;margin-bottom:.25rem}.sf-lt-one-post-title{font-weight:700;color:#333}.sf-lt-one-comments-area{margin-top:3rem}.sidebar-hidden .sf-lt-one-lecture-sidebar{margin-left:-300px}@media screen and (max-width:1024px){.sf-lt-one-site-main{padding:1.5rem 20px}.sf-lt-one-entry-title{font-size:1.8rem}}@media screen and (max-width:991px){.sf-lt-one-lecture-sidebar{position:fixed;top:50px;left:0;height:calc(100vh - 50px);z-index:999;margin-left:-300px;box-shadow:2px 0 15px rgba(0,0,0,.1)}body.admin-bar .sf-lt-one-lecture-sidebar{top:calc(50px + 32px);height:calc(100vh - 50px - 32px)}.sf-lt-one-lecture-container:not(.sidebar-hidden) .sf-lt-one-lecture-sidebar{margin-left:0}}.sf-lt-one-search-modal{display:none;position:fixed;top:0;left:0;width:100%;height:100%;z-index:2000}.sf-lt-one-search-modal.is-active{display:flex;align-items:flex-start;justify-content:center}.sf-lt-one-search-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.7)}.sf-lt-one-search-content{position:relative;z-index:1;background:#fff;border-radius:8px;margin-top:10vh;width:90%;max-width:600px;padding:2rem}.sf-lt-one-search-close{position:absolute;top:1rem;right:1rem;font-size:2rem;background:0 0;border:none;cursor:pointer}.sf-lt-one-search-field{width:100%;padding:.75rem;font-size:1.2rem;border:1px solid #ccc;border-radius:4px;margin-bottom:1rem}.sf-lt-one-search-scope{margin-bottom:1rem}.sf-lt-one-search-scope label{margin-right:1rem}.sf-lt-one-search-submit{padding:.5rem 1.5rem;background:#0073aa;color:#fff;border:none;border-radius:4px;cursor:pointer}