/* 21 · Table-of-contents panel — additive layer; base tokens from styles.css */
.bar{grid-template-columns:max-content max-content minmax(0,1fr) max-content}
.bar__toc{appearance:none;-webkit-appearance:none;border:0;background:transparent;color:currentColor;
  cursor:pointer;padding:6px 4px;display:inline-flex;align-items:center;justify-content:center;
  pointer-events:auto;transition:opacity .3s ease}
.bar__toc:hover{opacity:.62}
.bar__toc-i{position:relative;display:block;width:18px;height:12px;
  border-top:2px solid currentColor;border-bottom:2px solid currentColor}
.bar__toc-i::before{content:'';position:absolute;left:0;right:0;top:50%;margin-top:-1px;
  height:2px;background:currentColor}
@media (max-width:820px){
  .bar{grid-template-columns:max-content 1fr auto;grid-template-areas:'toc mark cta' 'nav nav nav'}
  .bar__toc{grid-area:toc;padding:4px 2px}
}
.toc-backdrop{position:fixed;inset:0;z-index:98;background:rgba(33,29,26,.34);
  opacity:0;transition:opacity .3s ease}
.toc-backdrop.is-on{opacity:1}
.toc-panel{position:fixed;inset:0 auto 0 0;z-index:100;width:min(320px,86vw);
  background:var(--cream-high,#FAFAF8);color:var(--ink,#211D1A);
  display:flex;flex-direction:column;padding:22px 20px 18px;
  transform:translateX(-102%);transition:transform .38s cubic-bezier(.22,1,.36,1);
  box-shadow:0 0 34px rgba(33,29,26,.18)}
.toc-panel.is-open{transform:translateX(0)}
.toc-panel__head{display:flex;align-items:center;justify-content:space-between;margin:0 0 14px}
.toc-panel__title{font-family:var(--tri-word,'Julius Sans One',sans-serif);font-weight:600;
  font-size:12px;letter-spacing:.22em;color:var(--ink-soft,rgba(33,29,26,.62))}
.toc-panel__close{appearance:none;-webkit-appearance:none;border:0;background:transparent;
  color:var(--ink,#211D1A);cursor:pointer;font:400 20px/1 var(--tri-ui,'Pretendard',sans-serif);
  padding:4px 8px;border-radius:8px}
.toc-panel__close:hover{background:var(--sage-pale,#D3DAC4)}
.toc-panel__nav{flex:1 1 auto;min-height:0;display:flex}
.toc-panel__list{list-style:none;margin:0;padding:0;width:100%;overflow-y:auto;
  overscroll-behavior:contain}
.toc-panel__item{appearance:none;-webkit-appearance:none;border:0;background:transparent;
  width:100%;text-align:left;cursor:pointer;display:flex;align-items:center;gap:10px;
  font-family:var(--tri-ui,'Pretendard',sans-serif);font-size:15px;line-height:1.35;
  color:var(--ink,#211D1A);padding:11px 10px;border-radius:9px;
  transition:background .18s ease}
.toc-panel__item::before{content:'';flex:none;width:6px;height:6px;border-radius:50%;
  background:transparent;transition:background .18s ease}
.toc-panel__item:hover{background:var(--sage-pale,#D3DAC4)}
.toc-panel__item.is-current{font-weight:700}
.toc-panel__item.is-current::before{background:var(--sage,#5F7052)}
.toc-panel__foot{flex:none;margin-top:12px}
html[lang="en"] .toc-panel .t-ko,html[lang="en"] .bar__toc .t-ko{display:none}
html:not([lang="en"]) .toc-panel .t-en,html:not([lang="en"]) .bar__toc .t-en{display:none}
.toc-wheel{display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:12px 10px 4px;border-top:1px solid var(--sage-pale,#D3DAC4)}
.toc-wheel__label{font-family:var(--tri-ui,'Pretendard',sans-serif);font-size:13px;
  color:var(--ink-soft,rgba(33,29,26,.62))}
.toc-wheel__sw{position:relative;flex:none;width:40px;height:22px;border-radius:11px;border:0;
  cursor:pointer;appearance:none;-webkit-appearance:none;padding:0;
  background:var(--sage,#5F7052);transition:background .18s ease}
.toc-wheel__sw::after{content:'';position:absolute;top:2px;left:2px;width:18px;height:18px;
  border-radius:50%;background:var(--cream-high,#FAFAF8);transition:transform .18s ease}
.toc-wheel__sw[aria-checked="false"]{background:rgba(33,29,26,.28)}
.toc-wheel__sw[aria-checked="true"]::after{transform:translateX(18px)}
@media (prefers-reduced-motion:reduce){
  .toc-panel{transition:none}
  .toc-backdrop{transition:none}
  .toc-wheel__sw,.toc-wheel__sw::after{transition:none}
}