/* Help navigation: one quiet rail, collapsible groups, a single strong current item. */
.layout{grid-template-columns:248px minmax(0,840px);gap:40px}
.sidebar{top:102px;max-height:calc(100vh - 126px);padding:16px;background:#f4f6fa;border:1px solid #dde3ec;border-radius:14px;scrollbar-gutter:stable;scrollbar-width:thin}
.sidebar .guide-overview,.mobile-menu .guide-overview{display:flex;align-items:center;gap:12px;padding:12px 8px 20px;color:#182131;font-size:16px;font-weight:700;border-radius:0;border-bottom:1px solid #dde3ec;text-decoration:none}
.guide-overview svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.5;flex-shrink:0}
.guide-overview small{display:block;font-size:12px;font-weight:400;color:#566477;margin-top:2px}
.guide-group{margin-top:12px}
.guide-group summary{display:flex;align-items:center;gap:10px;min-height:44px;padding:8px;color:#405067;font-size:13px;font-weight:650;cursor:pointer;list-style:none;border-radius:8px}
.guide-group summary::-webkit-details-marker{display:none}
.guide-group summary:hover{background:#e7edf5;color:#182131}
.guide-group summary>svg{width:18px;height:18px;stroke:currentColor;fill:none;stroke-width:1.5;flex-shrink:0}
.guide-group summary .guide-chevron{margin-left:auto;width:16px;height:16px;transform:rotate(-90deg)}
.guide-group[open] summary .guide-chevron{transform:none}
.guide-group ul{list-style:none;margin:2px 0 0;padding:0;display:grid;gap:2px}
.sidebar .guide-group a,.mobile-menu .guide-group a{display:flex;align-items:center;justify-content:space-between;gap:8px;min-height:44px;padding:9px 12px 9px 36px;color:#405067;font-size:14px;line-height:1.6;border-radius:8px;text-decoration:none;overflow-wrap:anywhere}
.sidebar .guide-group a:hover,.mobile-menu .guide-group a:hover{background:#e7edf5;color:#182131}
.sidebar .guide-group a[aria-current],.mobile-menu .guide-group a[aria-current]{background:#2155d9;color:#fff;font-weight:650}
.guide-group a svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.5;flex-shrink:0}
.sidebar .guide-overview[aria-current],.mobile-menu .guide-overview[aria-current]{color:#2155d9;background:transparent}
.sidebar-support{margin-top:20px;padding:20px 8px 4px}.sidebar-support a{min-height:36px;display:inline-flex;align-items:center}
@media(min-width:761px) and (max-width:1050px){.layout{grid-template-columns:224px minmax(0,1fr);gap:24px}.sidebar{padding:12px}.sidebar .guide-group a{padding-left:28px}}
@media(max-width:760px){.layout{display:block}.mobile-menu{padding:12px 20px}.mobile-menu>summary{min-height:44px;display:flex;align-items:center;justify-content:space-between}.mobile-menu>summary:after{content:'＋'}.mobile-menu[open]>summary:after{content:'−'}.mobile-menu nav{padding:0 0 12px}.mobile-menu .guide-overview{padding-top:16px}.guide-group{margin-top:8px}.mobile-menu .guide-group a{font-size:15px;min-height:46px}.guide-group summary{font-size:14px}}