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button.rt-skel-id{width:36px;height:36px;border-radius:10px;border:0;background:var(--brand-soft);color:var(--brand);font-weight:800;font-family:var(--mono)}.rt-skel-link{display:flex;align-items:center;gap:8px;padding:6px 0 6px 28px;font-size:12.5px;color:var(--soft);position:relative}.rt-skel-link:before{content:"";position:absolute;left:18px;top:0;bottom:0;width:2px;background:var(--line-strong)}.rt-skel-link .rt-pill{margin-left:6px}.rt-graph{width:100%;height:auto;display:block;background:var(--sunk);border-radius:12px;touch-action:manipulation}.rt-graph text{fill:var(--ink);font-family:var(--ui)}.rt-graph .edge{stroke:var(--line-strong);stroke-width:1.5}.rt-graph .edge-label{fill:var(--ink);font-size:11px;paint-order:stroke;stroke:var(--sunk);stroke-width:4px}.rt-graph .node circle{stroke:var(--surface);stroke-width:2}.rt-graph .node{cursor:pointer}.rt-graph .node.active circle{stroke:var(--ink);stroke-width:3}.rt-graph .node 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button.again{color:var(--red)}.rt-grades button.good{background:var(--teal);border-color:var(--teal);color:#fff}.rt-note-list{display:grid;gap:8px}.rt-note{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:2px 10px;padding:10px 12px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.rt-note strong{font-family:var(--reading);font-size:16px}.rt-note small{color:var(--faint)}.rt-cheat{background:var(--surface);color:var(--ink);border-radius:var(--radius);border:1px solid var(--line);padding:clamp(18px,4vw,40px);font-size:13.5px;line-height:1.5;--c-brand:var(--brand);--c-teal:var(--teal);--c-amber:var(--amber);--c-line:var(--line);--c-soft:var(--soft)}.rt-cheat-head{display:flex;justify-content:space-between;align-items:flex-end;gap:12px;flex-wrap:wrap;border-bottom:3px solid var(--ink);padding-bottom:12px;margin-bottom:16px}.rt-cheat-head h1{font-family:var(--reading);font-size:clamp(24px,4vw,32px);letter-spacing:-.01em}.rt-cheat-head 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small{display:block;font-family:var(--mono);font-weight:400;font-size:10.5px;color:var(--c-soft)}.rt-cheat-kw dd{margin:0 0 6px}.rt-cheat-kw dd span{display:block;color:var(--c-soft);font-size:12px}.rt-cheat-gram{display:grid;gap:8px}.rt-cheat-gram div{border:1px solid var(--c-line);border-radius:8px;padding:7px 10px}.rt-cheat-gram code{font-family:var(--mono);font-size:12px;background:var(--brand-soft);color:var(--c-brand);padding:1px 6px;border-radius:5px}.rt-cheat-gram em{display:block;font-family:var(--reading);font-style:italic;color:var(--c-soft);margin-top:3px}.rt-cheat-star{color:var(--c-amber);font-weight:800}.rt-cheat-foot{margin-top:18px;padding-top:10px;border-top:1px solid var(--c-line);font-size:11px;color:var(--c-soft);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}.rt-trap{display:inline-block;font-size:11px;font-weight:700;color:var(--c-amber);background:var(--amber-soft);border-radius:99px;padding:0 7px;margin:0 3px 2px 0}@media print{@page{size:A4;margin:12mm}.rt{background:#fff!important}.rt-header,.rt-no-print,.rt-tabbar,.rt-toast{display:none!important}.rt-main{padding:0!important;max-width:none}.rt-cheat{background:#fff;border:0;padding:0;font-size:10.5pt}}.rt-public{max-width:980px;margin:0 auto;padding:24px 16px 60px}.rt-desktop-only{display:none}@media (min-width:1024px){.rt-desktop-only{display:block}}.rt-mobile-only{display:block}@media (min-width:1024px){.rt-mobile-only{display:none}}.rt-stem-mark{background:var(--mark-strong);color:inherit;border-radius:3px;padding:0 2px}.rt-progress-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.rt-progress-stats>div{display:grid;gap:6px}.rt-progress-stats strong{font-size:23px}.rt-progress-stats span{font-size:12px;color:var(--soft)}@media(max-width:650px){.rt-header-inner{min-height:68px;padding:10px 20px}.rt-brand{font-size:22px}.rt-brand-mark{width:25px;height:25px}}