.tll-navigation{--nav-ink:#293f48;--nav-accent:#83377f;--nav-line:#dce3e3;position:relative;z-index:100;font-family:Source,"Source Sans 3",Arial,sans-serif;color:var(--nav-ink);text-align:left;line-height:1.45}
.tll-navigation *{box-sizing:border-box}.tll-navigation summary{list-style:none;cursor:pointer}.tll-navigation summary::-webkit-details-marker{display:none}
.tll-navigation .nav-toggle{position:relative;z-index:103;display:flex;align-items:center;gap:9px;min-height:46px;padding:10px 13px;border:1px solid var(--nav-line);border-radius:6px;background:#fff;font:600 16px/1.4 Source,"Source Sans 3",Arial,sans-serif;color:var(--nav-ink)}
.tll-navigation svg{width:21px;height:21px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}.tll-navigation .nav-toggle svg{width:22px;height:22px}.tll-navigation .nav-close-icon{display:none}.tll-navigation .nav-drawer[open] .nav-open-icon{display:none}.tll-navigation .nav-drawer[open] .nav-close-icon{display:block}
.tll-navigation .nav-backdrop{position:fixed;inset:0;background:#23364020;border:0;border-radius:0;z-index:101;cursor:default;min-height:0;padding:0;width:100%;height:100%;margin:0;box-shadow:none}
.tll-navigation .nav-panel{position:absolute;z-index:102;right:0;top:calc(100% + 12px);width:354px;max-height:calc(100dvh - var(--nav-top,94px) - 16px);overflow:auto;overscroll-behavior:contain;border:1px solid var(--nav-line);border-radius:12px;background:#fff;padding:20px;box-shadow:0 16px 48px #20343c20;animation:nav-appear 150ms ease-out}
.tll-navigation .nav-panel-title{font:600 12px/1.5 Source,"Source Sans 3",Arial,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:#65777d;margin:0 12px 12px}
.tll-navigation ul{list-style:none;margin:0;padding:0}.tll-navigation li{margin:0;padding:0}.tll-navigation .nav-row{display:flex;align-items:center;gap:13px;min-height:51px;padding:12px;border:0;border-radius:6px;text-decoration:none!important;color:var(--nav-ink);font:600 18px/1.4 Source,"Source Sans 3",Arial,sans-serif;letter-spacing:normal;background:transparent;transition:color 140ms ease,background-color 140ms ease}
.tll-navigation .nav-chevron{margin-left:auto;width:16px;height:16px;transition:transform 150ms ease}.tll-navigation .nav-group[open]>.nav-row .nav-chevron{transform:rotate(180deg)}
.tll-navigation .nav-sublist{border-left:1px solid #d7dce0;margin:3px 10px 13px 22px;padding:0 0 0 13px}.tll-navigation .nav-sublist a{display:block;min-height:46px;padding:11px 12px;border-radius:5px;font:400 17px/1.4 Source,"Source Sans 3",Arial,sans-serif;color:var(--nav-ink);text-decoration:none!important;transition:color 140ms ease,background-color 140ms ease}.tll-navigation .nav-sublist small{display:block;color:#586b73;font-size:14px;line-height:1.4;margin-top:3px}
.tll-navigation .nav-utilities{border-top:1px solid var(--nav-line);margin-top:15px;padding-top:13px}.tll-navigation .nav-utilities .nav-row{font-size:16px;min-height:47px}.tll-navigation .nav-utilities .nav-sublist a{font-size:16px}
.tll-navigation .nav-row:hover,.tll-navigation .nav-sublist a:hover{color:var(--nav-accent);background:#faf5fa}.tll-navigation a[aria-current=page]{color:#70316f;background:#f6edf6;box-shadow:inset 3px 0 #83377f;font-weight:600}.tll-navigation .nav-group.has-current>.nav-row{color:var(--nav-accent)}
.tll-navigation a:focus-visible,.tll-navigation summary:focus-visible{outline:2px solid var(--nav-accent);outline-offset:3px}.tll-navigation .nav-toggle:hover{border-color:#8b608d;color:var(--nav-accent)}.tll-navigation [hidden]{display:none!important}
@keyframes nav-appear{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:none}}
@media(max-width:600px){.tll-navigation .nav-panel{position:fixed;top:var(--nav-top,79px);right:14px;left:14px;width:auto;max-height:calc(100dvh - var(--nav-top,79px) - 16px);padding:18px}.tll-navigation .nav-toggle{min-width:48px;min-height:46px;padding:10px}.tll-navigation .nav-toggle-label{display:none}.tll-navigation .nav-panel-title{margin-bottom:10px}.tll-navigation .nav-row{min-height:52px}}
@media(prefers-reduced-motion:reduce){.tll-navigation *{animation:none!important;transition:none!important}}

.tll-course-header{z-index:120;gap:14px}.tll-course-header .tll-navigation{margin-left:auto;flex-shrink:0}.tll-course-header .brand{display:flex;align-items:center;gap:8px}.tll-course-header .brand svg{width:23px;height:23px}@media(max-width:600px){.tll-course-header .header-note,.tll-course-header .draft{display:none}}

/* Every section destination is visible without expanding a group. */
.tll-navigation .nav-toggle{z-index:100}
.tll-navigation .nav-panel{position:fixed;top:0;bottom:0;right:0;width:min(760px,100vw);height:100dvh;max-height:none;padding:0;border-radius:16px 0 0 16px;display:flex;flex-direction:column;overflow:hidden;animation:none}
.tll-navigation .nav-panel-header{display:flex;justify-content:space-between;align-items:center;padding:16px 28px;border-bottom:1px solid #e2e5e6;flex-shrink:0}
.tll-navigation .nav-panel-title{margin:0;letter-spacing:1.6px}
.tll-navigation .nav-dismiss{display:flex;align-items:center;justify-content:center;width:44px;height:44px;cursor:pointer;border-radius:6px}
.tll-navigation .nav-dismiss:hover{background:#f6eef7;color:var(--nav-accent)}
.tll-navigation .nav-dismiss:focus-visible{outline:2px solid var(--nav-accent);outline-offset:2px}
.tll-navigation .nav-scroll{overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;flex:1;min-height:0;padding:18px 28px 26px}
.tll-navigation .nav-sections,.tll-navigation .nav-utilities{display:grid;grid-template-columns:1fr 1fr;gap:4px 30px}
.tll-navigation .nav-section{padding:12px 0 16px;border-bottom:1px solid #e4e8e9;min-width:0}
.tll-navigation .nav-row{font-size:19px;min-height:44px;padding:8px 0;gap:12px}
.tll-navigation .nav-row svg{width:24px;height:24px;stroke-width:1.5}
.tll-navigation .nav-sublist{margin:3px 0 0 11px;padding:0 0 0 24px;border-color:#dce2e5}
.tll-navigation .nav-sublist a{min-height:44px;padding:8px;font-size:15px;display:flex;align-items:center;flex-wrap:wrap}
.tll-navigation .nav-sublist small{display:none}
.tll-navigation .nav-utilities{margin:0;padding:4px 0 0;border:0}
.tll-navigation .nav-utilities>.nav-section{border-bottom:0}
.tll-navigation .nav-help-title{font-size:16px;font-weight:600;margin:0;padding:12px 8px}
.tll-navigation .nav-help .nav-sublist{margin:0;padding:0;border:0}
.tll-navigation .nav-help .nav-sublist a{font-size:14px}
@media(max-width:699px){.tll-navigation .nav-panel{left:0;right:0;top:0;width:100%;border-radius:0}.tll-navigation .nav-panel-header{padding:14px 20px}.tll-navigation .nav-scroll{padding:12px 20px 26px}.tll-navigation .nav-sections,.tll-navigation .nav-utilities{display:block}.tll-navigation .nav-utilities .nav-section:first-child{border-bottom:1px solid #e4e8e9}}

/* Keep the open navigation above floating page tools. */
header:has(.nav-drawer[open]){z-index:1000!important}