/* Shared direct navigation for all calculators, with native keyboard-operable groups. */
.site-header{position:relative;z-index:30}.site-header #navigation{display:flex;align-items:center;gap:21px;font-size:12px}.site-header #navigation>a,.site-header #navigation .nav-group>summary{padding:10px 0;font-size:12px;font-weight:400;letter-spacing:.1px;white-space:nowrap}.site-header #navigation>a:last-child{border-left:0;padding-left:0}.nav-group{position:relative;margin:0;border:0;padding:0}.nav-group>summary{display:flex;align-items:center;gap:7px;list-style:none;cursor:pointer}.nav-group>summary::-webkit-details-marker{display:none}.nav-group>summary:after{content:'';display:block;width:5px;height:5px;border-right:1px solid #8b997f;border-bottom:1px solid #8b997f;transform:rotate(45deg);margin-top:-3px}.nav-group[open]>summary:after{transform:rotate(225deg);margin-top:3px}.nav-group[open]>summary{color:var(--green)}.nav-group-links{position:absolute;top:100%;left:-18px;min-width:285px;max-width:330px;background:#fafbf6;border:1px solid #bdcbb4;box-shadow:0 12px 25px #173e3514;padding:13px 0;max-height:65vh;overflow:auto;z-index:40}.nav-group-links>a,.site-header nav .nav-group-links>a:last-child{display:block;white-space:normal;border:0;padding:9px 18px;font-size:11px;line-height:1.6;color:var(--ink)}.nav-group-links>a:hover,.nav-group-links>a:focus-visible{background:#eaf0e4;color:#285c49}.nav-group-links>.nav-group-all{border-top:1px solid var(--line)!important;margin-top:7px;padding-top:12px!important;color:var(--muted)!important}.nav-group:nth-last-of-type(1)>.nav-group-links{left:auto;right:-18px}.footer-knowledge>a{font-size:10px}.site-header .menu-toggle{background:transparent;border:0;cursor:pointer;color:var(--ink)}
@media(max-width:1100px) and (min-width:761px){.site-header{padding-left:25px;padding-right:25px}.site-header .brand{font-size:18px}.site-header #navigation{gap:16px}.site-header #navigation>a,.site-header #navigation .nav-group>summary{font-size:11px}.nav-group-links{min-width:260px}}
@media(max-width:900px){.site-header{flex-wrap:wrap}.site-header .menu-toggle{display:flex;align-items:center;gap:9px;padding:9px 0;font-size:11px}.site-header #navigation{display:flex;width:100%;flex-direction:column;align-items:stretch;gap:0;border-top:1px solid var(--line);max-height:calc(100dvh - 100px);overflow-y:auto;padding-top:5px}.nav-enhanced .site-header #navigation:not(.open){display:none}.site-header #navigation>a,.site-header #navigation .nav-group>summary{padding:13px 2px;font-size:13px;justify-content:space-between}.nav-group{border-bottom:1px solid var(--line)}.nav-group-links{position:static;box-shadow:none;min-width:0;max-width:none;max-height:none;margin:0 0 12px;padding:5px 0;background:#f0f3e9;border:0;border-left:1px solid #aaba9d}.nav-group-links>a,.site-header nav .nav-group-links>a:last-child{font-size:12px;padding:10px 15px}.nav-group[open]>summary{color:var(--green)}.site-header #navigation>a:last-child{padding-left:2px}.site-header .brand{font-size:18px}}
@media(max-width:430px){.site-header .brand{font-size:16px;gap:5px}.site-header .brand svg{width:25px}.site-header{padding-left:16px;padding-right:16px}.site-header .menu-toggle{font-size:10px}}
@media print{.site-header #navigation,.site-header .menu-toggle{display:none!important}}