:root{--td-blue-aaa:#004D73;--td-blue-light:#006BA1;--td-text-primary:#0F172A;--td-text-secondary:#475569;--td-bg-white:#FFFFFF;--td-bg-light:#F8FAFC;--td-border:#E2E8F0;--td-toc-font-size:16px;--td-toc-title-size:18px;--td-toc-sticky-offset:20px;--td-shadow-sm:0 2px 8px rgba(0, 77, 115, 0.08);--td-shadow-md:0 4px 12px rgba(0, 77, 115, 0.12)}.screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.td-toc-wrapper{display:grid;grid-template-columns:1fr 280px;gap:48px;max-width:1600px;margin:0 auto;padding:0 24px;align-items:start}.td-toc-main-content{min-width:0;max-width:100%}.td-toc-sidebar{position:sticky;top:var(--td-toc-sticky-offset);max-height:calc(100vh - var(--td-toc-sticky-offset) - 40px);overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--td-blue-aaa) #fff0}.td-toc-sidebar::-webkit-scrollbar{width:6px}.td-toc-sidebar::-webkit-scrollbar-track{background:#fff0}.td-toc-sidebar::-webkit-scrollbar-thumb{background:var(--td-blue-aaa);border-radius:6px}.td-toc-sidebar::-webkit-scrollbar-thumb:hover{background:var(--td-blue-light)}.td-toc-container{background:var(--td-bg-white);border:2px solid var(--td-blue-aaa);border-radius:12px;padding:20px;box-shadow:var(--td-shadow-sm);transition:box-shadow 0.2s ease}.td-toc-container:hover{box-shadow:var(--td-shadow-md)}.td-toc-header{display:flex;align-items:center;gap:10px;margin-bottom:16px;padding-bottom:12px;border-bottom:2px solid var(--td-border)}.td-toc-icon{font-size:20px;line-height:1}.td-toc-title{font-family:'Oswald',-apple-system,BlinkMacSystemFont,sans-serif;font-size:var(--td-toc-title-size);font-weight:700;color:var(--td-text-primary);margin:0;text-transform:uppercase;letter-spacing:.5px;line-height:1.2}.td-toc-search{margin-bottom:16px}.td-toc-search input{width:100%;padding:10px 12px;border:2px solid var(--td-border);border-radius:8px;font-size:16px;font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;color:var(--td-text-primary);background:var(--td-bg-light);transition:all 0.2s ease}.td-toc-search input:focus{outline:none;border-color:var(--td-blue-aaa);background:var(--td-bg-white);box-shadow:0 0 0 3px rgb(0 77 115 / .1)}.td-toc-search input::placeholder{color:var(--td-text-secondary);opacity:.7}.td-toc-list{list-style:none;padding:0;margin:0}.td-toc-item{margin-bottom:4px}.td-toc-item.hidden{display:none}.td-toc-link{display:block;padding:10px 12px;color:var(--td-text-primary);text-decoration:none;border-radius:6px;font-size:var(--td-toc-font-size);line-height:1.5;font-family:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;transition:all 0.15s ease;border-left:3px solid #fff0;font-weight:500}.td-toc-link:hover{background:var(--td-bg-light);color:var(--td-blue-aaa);border-left-color:var(--td-blue-aaa);transform:translateX(2px)}.td-toc-link:focus{outline:3px solid var(--td-blue-aaa);outline-offset:2px}.td-toc-link.active{background:var(--td-blue-aaa);color:var(--td-bg-white);border-left-color:var(--td-blue-aaa);font-weight:600}.td-toc-link.h2{font-weight:600}.td-toc-link.h3{padding-left:24px;font-size:calc(var(--td-toc-font-size) - 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