.tool-longform{display:grid;grid-template-columns:220px minmax(0,1fr);gap:56px;align-items:start;max-width:1060px;margin:0 auto}.tool-longform-body{min-width:0}.tool-rail{position:sticky;top:120px;align-self:start}.tool-rail-title{display:block;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:0.09em;color:var(--text-secondary);margin-bottom:14px}.tool-rail-list{list-style:none;margin:0;padding:0;border-left:1px solid var(--border-subtle)}.tool-rail-link{display:block;padding:8px 0 8px 16px;margin-left:-1px;border-left:2px solid transparent;font-size:13.5px;line-height:1.45;color:var(--text-secondary);text-decoration:none;transition:color 0.15s ease,border-color 0.15s ease}.tool-rail-link:hover,.tool-rail-link:focus-visible{color:var(--text-main);border-left-color:var(--border-subtle)}.tool-rail-link[aria-current="true"]{color:var(--accent-green);border-left-color:var(--accent-green);font-weight:600}@media (max-width:1023px){.tool-longform{grid-template-columns:minmax(0,1fr);gap:0}.tool-rail{top:103px;z-index:5;margin:0 0 32px;padding:10px 0;background:var(--bg-base);border-bottom:1px solid var(--border-subtle)}.tool-rail-title{display:none}.tool-rail-list{display:flex;gap:6px;overflow-x:auto;border-left:none;scrollbar-width:none}.tool-rail-list::-webkit-scrollbar{display:none}.tool-rail-link{display:flex;align-items:center;flex:none;min-height:44px;padding:7px 14px;margin-left:0;border-left:none;border:1px solid var(--border-subtle);border-radius:999px;white-space:nowrap;font-size:13px}.tool-rail-link[aria-current="true"]{border-color:var(--accent-green);background:var(--bg-surface)}}