/* Una gerarchia di percorsi, con tutte le sezioni originali conservate. */
header{gap:24px;flex-wrap:wrap}
.header-navigation{align-items:center;gap:14px 22px;flex:1}
header .header-navigation a{margin:0;font-size:14px;line-height:1.4;white-space:nowrap}
header .header-navigation .header-main-link{font-size:17px;font-weight:600;color:var(--ink)}
.header-navigation a[aria-current]{color:var(--gold);text-decoration:underline;text-underline-offset:6px}
.header-help-link{border-left:1px solid var(--line);padding-left:22px}
.toolbar.atlas-navigation{display:block;padding:24px 0 28px}
.primary-paths{display:grid;grid-template-columns:1fr 1fr .9fr;gap:14px}
.primary-paths .path-button{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;text-align:left;min-width:0;min-height:116px;padding:22px 25px;border-radius:8px;color:var(--ink);transition:background .15s,border-color .15s}
.primary-paths .path-featured{border-color:#a28c5c;background:linear-gradient(135deg,#d1b37410,transparent)}
.primary-paths .path-title{font:clamp(25px,2.6vw,36px)/1.2 Georgia,serif}
.primary-paths .path-description{font-size:13px;line-height:1.5;opacity:.75;margin-top:8px}
.primary-paths .path-reading{background:var(--panel)}
.primary-paths .path-reading .path-title{font-size:clamp(21px,2.1vw,28px)}
.primary-paths .path-button:hover{border-color:var(--gold);background:#d1b3741a}
.primary-paths .path-button.active{background:var(--gold);border-color:var(--gold);color:var(--bg)}
.secondary-navigation{margin-top:18px;border-bottom:1px solid var(--line);padding-bottom:16px}
.secondary-navigation>summary{padding:10px 0;color:var(--muted);font-size:14px;cursor:pointer;width:fit-content}
.secondary-navigation[open]>summary{color:var(--gold)}
.navigation-groups{display:grid;grid-template-columns:.8fr 1.3fr 1.2fr;gap:26px;padding:14px 0 8px}
.navigation-group{min-width:0}
.navigation-group h2{font:600 11px/1.5 system-ui,sans-serif;text-transform:uppercase;letter-spacing:.13em;color:var(--muted);margin:0 0 12px}
.navigation-options{display:flex;flex-wrap:wrap;gap:8px}
.navigation-options .tab{font-size:12px;padding:9px 12px;text-align:left}
.navigation-groups{display:flex;align-items:center;gap:18px;overflow-x:auto;padding:10px 0 8px;scrollbar-width:thin;scrollbar-color:var(--line) transparent}
.navigation-group{display:flex;align-items:center;gap:9px;flex:0 0 auto}
.navigation-group h2{margin:0;white-space:nowrap;font-size:10px}
.navigation-options{flex-wrap:nowrap;gap:6px}
.navigation-options .tab{white-space:nowrap;padding:7px 10px;font-size:11px}
.atlas-search{display:flex;align-items:center;gap:16px;margin-top:20px}
.atlas-search label{font-size:13px;color:var(--muted)}
.toolbar .atlas-search input{margin:0;width:340px;max-width:100%}
.atlas-search[hidden]{display:none}
@media(max-width:900px){.brand{flex-basis:100%}.header-navigation{justify-content:flex-start}.primary-paths .path-button{padding:20px}}
@media(max-width:600px){header{padding-top:20px;padding-bottom:20px;gap:16px}header .header-navigation{max-width:none;justify-content:flex-start;gap:12px 20px}header .header-navigation a{font-size:12px}header .header-navigation .header-main-link{font-size:17px}.header-help-link{border:0;padding-left:0}.primary-paths{grid-template-columns:1fr 1fr;gap:10px}.primary-paths .path-button{padding:18px 14px;min-height:112px}.primary-paths .path-title{font-size:29px}.primary-paths .path-description{font-size:12px}.primary-paths .path-reading{grid-column:1/-1;min-height:82px;flex-direction:row;align-items:center;justify-content:space-between;gap:16px}.primary-paths .path-reading .path-title{font-size:23px}.primary-paths .path-reading .path-description{margin:0;max-width:150px;font-size:11px}.navigation-groups{gap:14px}.navigation-group{gap:7px}.navigation-group h2{font-size:9px}.navigation-options .tab{padding:7px 9px;font-size:10px}.atlas-search{align-items:flex-start;flex-direction:column;gap:8px}.toolbar .atlas-search input{width:100%}.secondary-navigation>summary{font-size:13px}}
@media(prefers-reduced-motion:reduce){.primary-paths .path-button{transition:none}}