.lrn-lead{padding-block:clamp(28px,5vh,58px) clamp(24px,3.6vh,42px)}.lrn-lead .cs-h1{max-width:16ch}.lrn-micro{margin-top:var(--sp-3);color:var(--data-dim);font-size:11.5px;letter-spacing:.05em}.lrn-boundary{margin-top:10px;max-width:52ch;font-size:12.5px;line-height:1.6;color:var(--data-dim)}.lrn-boundary-link{color:var(--text-dim);text-decoration:none;border-bottom:1px solid var(--line-strong);border-radius:2px;transition:color var(--t-fast) var(--ease-enter),border-color var(--t-fast) var(--ease-enter)}.lrn-boundary-link:hover{color:var(--sig-live);border-color:var(--sig-live)}.lrn-boundary-link:focus-visible{outline:none;box-shadow:0 0 0 2px var(--ground),0 0 0 4px var(--sig-live)}.lrn-boundary-link:active{color:var(--data)}.lrn-tree-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:14px}.lrn-tag{display:inline-flex;align-items:center;gap:7px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--data-dim)}.lrn-tag:before{content:"";width:6px;height:6px;border-radius:999px;background:var(--sig-ok);flex:0 0 auto}.lrn-tree-wrap{margin-top:clamp(18px,2.6vh,26px);display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);grid-gap:clamp(24px,3vw,48px);gap:clamp(24px,3vw,48px);align-items:start}@media (max-width:860px){.lrn-tree-wrap{grid-template-columns:1fr}}.lrn-tree{list-style:none;margin:0;padding:0;border-top:1px solid var(--line-strong)}.lrn-node{border-bottom:1px solid var(--line)}.lrn-details{width:100%}.lrn-sum{display:grid;grid-template-columns:18px minmax(0,1fr) auto;grid-gap:14px;gap:14px;align-items:baseline;padding:16px 6px;cursor:pointer;list-style:none;border-radius:6px;transition:background var(--t-fast) var(--ease-enter)}.lrn-sum::-webkit-details-marker{display:none}.lrn-sum:hover{background:var(--panel)}.lrn-sum:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--sig-live)}.lrn-sum:active{background:var(--panel-2);transition-duration:var(--t-press)}.lrn-sum-caret{display:inline-block;font-size:10px;color:var(--data-dim);line-height:1.4;transition:transform var(--t-fast) var(--ease-enter)}details[open]>.lrn-sum .lrn-sum-caret{transform:rotate(90deg)}.lrn-sum-num{font-size:11.5px;color:var(--data-dim)}.lrn-sum-name{font-size:15px;font-weight:700;color:var(--text);min-width:0}.lrn-sum-name small{margin-left:8px;font-size:12px;font-weight:400;color:var(--data-dim)}.lrn-sum-meta{display:flex;align-items:center;gap:10px;white-space:nowrap}.lrn-lab-badge{font-size:10px;letter-spacing:.05em;color:var(--data-dim);border:1px solid var(--line-strong);border-radius:999px;padding:2px 8px}.lrn-sum-count{font-size:11.5px;color:var(--data)}.lrn-body{padding:0 6px 20px 32px}.lrn-desc{max-width:54ch;font-size:13px;line-height:1.65;color:var(--text-dim)}.lrn-body-row{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:12px}@media (prefers-reduced-motion:no-preference){.lrn-body{animation:lrn-body-in var(--t-base) var(--ease-enter) both}@keyframes lrn-body-in{0%{opacity:0;transform:translateY(-3px)}}}.lrn-aside{border-left:1px solid var(--line);padding-left:clamp(20px,2.4vw,28px);align-self:start;position:-webkit-sticky;position:sticky;top:70px}@media (max-width:860px){.lrn-aside{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:22px;margin-top:6px;position:static}}.lrn-aside-block+.lrn-aside-block{margin-top:22px;padding-top:22px;border-top:1px solid var(--line)}.lrn-aside-k{font-size:10.5px;letter-spacing:.14em;color:var(--data-dim)}.lrn-aside-value{margin-top:8px;font-size:clamp(28px,3.6vw,38px);font-weight:500;letter-spacing:-.01em;color:var(--data);line-height:1}.lrn-aside-p{margin-top:8px;max-width:40ch;font-size:13px;line-height:1.65;color:var(--text-dim)}.lrn-aside-block .cs-more{margin-top:12px}.lrn-cred-body{margin-top:clamp(24px,3vw,36px);display:grid;grid-template-columns:1.15fr 1fr;grid-gap:clamp(28px,4vw,56px);gap:clamp(28px,4vw,56px);align-items:start}@media (max-width:860px){.lrn-cred-body{grid-template-columns:1fr}.lrn-cred-aside{border-left:0;padding-left:0;border-top:1px solid var(--line);padding-top:22px;margin-top:6px}}.lrn-chain{list-style:none;display:flex;flex-direction:column;margin:0;padding:0}.lrn-chain-item{display:flex;gap:16px;padding-block:16px;border-bottom:1px solid var(--line)}.lrn-chain-item:last-child{border-bottom:0}.lrn-chain-num{flex:0 0 auto;width:32px;height:32px;border:1px solid var(--line-strong);border-radius:999px;display:flex;align-items:center;justify-content:center;font-size:12px;color:var(--data)}.lrn-chain-h{font-size:15px;font-weight:700;color:var(--text)}.lrn-chain-path{margin-left:8px;font-size:12px;font-weight:400;color:var(--data)}.lrn-chain-p{margin-top:5px;font-size:13px;line-height:1.55;color:var(--text-dim)}.lrn-cred-aside{border-left:1px solid var(--line);padding-left:clamp(20px,2.4vw,28px)}.lrn-stat{font-size:12.5px;color:var(--text-dim);letter-spacing:.01em}.lrn-stat+.lrn-stat{margin-top:8px}.lrn-stat-note{margin-top:14px;padding-top:14px;border-top:1px solid var(--line);font-size:12px;line-height:1.55;color:var(--data-dim)}.lrn-cred-links{margin-top:20px;display:flex;flex-wrap:wrap;gap:8px}.lrn-cred-link{font-family:var(--cs-mono);font-size:12px;color:var(--text-dim);border:1px solid var(--line-strong);border-radius:999px;padding:7px 12px;min-height:34px;display:inline-flex;align-items:center;transition:color var(--t-fast) var(--ease-enter),border-color var(--t-fast) var(--ease-enter),background var(--t-fast) var(--ease-enter)}.lrn-cred-link:hover{color:var(--text);border-color:var(--data-dim);background:var(--panel)}.lrn-cred-link:focus-visible{outline:none;box-shadow:0 0 0 2px var(--ground),0 0 0 4px var(--sig-live)}.lrn-cred-link:active{background:var(--panel-2);transition-duration:var(--t-press)}@media (max-width:560px){.lrn-sum{grid-template-columns:16px minmax(0,1fr)}.lrn-sum-meta{grid-column:1/-1;justify-content:flex-start}.lrn-body,.lrn-sum-meta{padding-left:30px}}.lrn-groups{display:flex;flex-direction:column;gap:clamp(26px,4vh,40px);min-width:0}.lrn-group-h{display:flex;align-items:baseline;gap:10px;font-family:var(--cs-kr);font-weight:800;font-size:15.5px;letter-spacing:-.01em;color:var(--text)}.lrn-group-h .cs-mono{font-weight:500;font-size:10px;letter-spacing:.16em;color:var(--data-dim)}.lrn-group-sub{margin-top:5px;margin-bottom:12px;font-size:13px;line-height:1.65;color:var(--text-dim);max-width:46em}.lrn-group-sub a{color:var(--text);text-decoration:underline;text-underline-offset:3px;-webkit-text-decoration-color:var(--line-strong);text-decoration-color:var(--line-strong);border-radius:3px;transition:color var(--t-fast) var(--ease-enter),-webkit-text-decoration-color var(--t-fast) var(--ease-enter);transition:color var(--t-fast) var(--ease-enter),text-decoration-color var(--t-fast) var(--ease-enter);transition:color var(--t-fast) var(--ease-enter),text-decoration-color var(--t-fast) var(--ease-enter),-webkit-text-decoration-color var(--t-fast) var(--ease-enter)}.lrn-group-sub a:hover{color:var(--sig-live);-webkit-text-decoration-color:var(--sig-live);text-decoration-color:var(--sig-live)}.lrn-group-sub a:focus-visible{outline:none;box-shadow:0 0 0 2px var(--ground),0 0 0 4px var(--sig-live)}