.gt-toc-aside{flex-shrink:0;width:var(--gt-aside-width);padding:0.75rem 0.298rem 0.88rem;display:flex;flex-direction:column;order:-1}.gt-toc-sticky{position:sticky;top:calc(var(--gt-header-height) + 0.75rem);background:var(--gt-card-bg);border-radius:var(--gt-main-radius);display:flex;flex-direction:column;max-height:calc(100vh - var(--gt-header-height) - 1.5rem);transition:top .3s}body.header-hidden .gt-toc-sticky{top:.75rem;max-height:calc(100vh - 1.5rem)}.gt-toc-header{display:flex;align-items:center;gap:.35rem;padding:.6rem .75rem;font-size:.85rem;font-weight:600;line-height:1;color:var(--gt-font-color);border-bottom:1px solid var(--gt-border-color);flex-shrink:0}.gt-toc-header i{font-size:1rem;line-height:1;color:var(--gt-main-color)}.gt-toc-toggle{display:flex;align-items:center;justify-content:center;margin-left:auto;width:1.5rem;height:1.5rem;border:none;background:transparent;color:var(--gt-font-56);cursor:pointer;border-radius:50%;transition:background .2s,color .2s}.gt-toc-toggle:hover{background:var(--gt-main-color-10);color:var(--gt-main-color)}.gt-toc-aside.collapsed .gt-toc-toggle i{transform:rotate(180deg)}.gt-toc-aside.collapsed .gt-toc-body{display:none}.gt-toc-body{flex:1;padding:.5rem 0;overflow-y:auto;overflow-x:hidden;scroll-behavior:smooth;-webkit-overflow-scrolling:touch}.gt-toc-list{list-style:none;margin:0;padding:0}.gt-toc-list li a{display:block;padding:.3rem .75rem;font-size:.78rem;line-height:1.4;color:var(--gt-font-color);text-decoration:none;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;border-left:2px solid transparent;transition:color .2s,background .2s,border-color .2s}.gt-toc-list li a:hover,.gt-toc-list li.active>a{color:var(--gt-main-color);background:var(--gt-main-color-6);border-left-color:var(--gt-main-color)}.gt-toc-list li.active>a{font-weight:500}.gt-toc-list li[data-level="3"] a{padding-left:1.5rem}.gt-toc-list li[data-level="4"] a{padding-left:2.25rem}.gt-toc-list li[data-level="5"] a{padding-left:3rem}.gt-toc-list li[data-level="6"] a{padding-left:3.75rem}.gt-toc-progress{height:2px;background:var(--gt-border-color);flex-shrink:0}.gt-toc-progress-bar{height:100%;width:0;background:var(--gt-main-color);transition:width .15s ease}@media screen and (max-width:1200px){.gt-toc-aside{display:none}}.gt-toc-mobile-fab{display:none;position:fixed;right:1.5rem;bottom:7.8rem;z-index:900;width:2.5rem;height:2.5rem;border:1px solid var(--gt-border-light);border-radius:50%;background:var(--gt-card-bg);box-shadow:var(--gt-box-shadow);color:var(--gt-main-color);font-size:1.25rem;cursor:pointer;align-items:center;justify-content:center;padding:0}[data-theme="dark"] .gt-toc-mobile-fab{border-color:rgba(255,255,255,0.1)}.gt-toc-mobile-overlay{display:none;position:fixed;top:0;left:0;width:100vw;height:100vh;background:rgba(0,0,0,0.5);z-index:1009;opacity:0;visibility:hidden;transition:opacity .3s ease}.gt-toc-mobile-overlay.active{opacity:1;visibility:visible}.gt-toc-mobile-drawer{display:none;position:fixed;bottom:0;left:0;right:0;z-index:1010;background:var(--gt-card-bg);border-radius:var(--gt-main-radius) var(--gt-main-radius) 0 0;transform:translateY(100%);transition:transform .3s cubic-bezier(0.4,0,0.2,1);max-height:60vh;flex-direction:column}.gt-toc-mobile-drawer.active{transform:translateY(0)}.gt-toc-mobile-drawer-header{display:flex;align-items:center;gap:.35rem;padding:.75rem 1rem;font-size:.9rem;font-weight:600;color:var(--gt-font-color);border-bottom:1px solid var(--gt-border-color);flex-shrink:0}.gt-toc-mobile-drawer-header i{font-size:1.1rem;color:var(--gt-main-color)}.gt-toc-mobile-close{margin-left:auto;width:1.75rem;height:1.75rem;border:none;background:transparent;color:var(--gt-font-56);cursor:pointer;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.2rem;transition:background .2s,color .2s}.gt-toc-mobile-close:active{background:var(--gt-main-color-10);color:var(--gt-main-color)}.gt-toc-mobile-drawer-body{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:.5rem 0}@media screen and (max-width:1200px){.gt-toc-mobile-fab{display:flex}.gt-toc-mobile-overlay{display:block}.gt-toc-mobile-drawer{display:flex}}@media screen and (max-width:768px){.gt-toc-mobile-fab{right:.5rem;bottom:7.5rem;width:2.25rem;height:2.25rem;font-size:1.375rem}}@media screen and (max-width:480px){.gt-toc-mobile-fab{right:.5rem;bottom:7rem}}
/* B6B9C0913EA7D59C-c90e1b7ffbb3 */
/* ===== 目录改版：宽屏固定于左侧留白（不再占正文流内宽度）+ 树形层级 ===== */
.gt-toc-list li { position: relative; }
.gt-toc-list.gt-toc-tree li a { padding-left: .75rem; white-space: normal; line-height: 1.35; }
.gt-toc-list.gt-toc-tree li.has-children > a { padding-left: 1.55rem; padding-right: 1.2rem; }
.gt-toc-sublist { list-style: none; margin: 0; padding: 0 0 0 .8rem; }
.gt-toc-sublist .gt-toc-sublist { padding-left: .8rem; }
.gt-toc-branch-toggle { position: absolute; left: .28rem; top: .24rem; width: 1.15rem; height: 1.15rem; display: inline-flex; align-items: center; justify-content: center; border: none; background: transparent; color: var(--gt-font-56); cursor: pointer; padding: 0; border-radius: 50%; }
.gt-toc-branch-toggle:hover { color: var(--gt-main-color); background: var(--gt-main-color-10); }
.gt-toc-branch-toggle i { font-size: .95rem; line-height: 1; transition: transform .2s; }
li.toc-collapsed > .gt-toc-sublist { display: none; }
li.toc-collapsed > .gt-toc-branch-toggle i { transform: rotate(-90deg); }
@media (min-width: 1800px) {
    .gt-toc-aside { position: fixed; left: 1rem; top: calc(var(--gt-header-height) + .75rem); width: 240px; max-width: calc((100vw - var(--gt-main-max-width)) / 2 - 1.25rem); z-index: 6; }
    .gt-toc-sticky { position: static; max-height: calc(100vh - var(--gt-header-height) - 1.5rem); height: auto; }
}
@media (max-width: 1799.98px) {
    .gt-toc-aside { display: none; }
    .gt-toc-mobile-fab { display: flex; }
    .gt-toc-mobile-overlay { display: block; }
    .gt-toc-mobile-drawer { display: flex; }
}