/* AIHT navigation: Paper & Ink, shared desktop and full-screen mobile. */
.nh-header{--nh-ink:#202b33;--nh-blue:#244963;--nh-line:#d5dbd7;--nh-paper:#f8f7f3}
.nh-bar{max-width:1480px;margin:auto;padding:0 28px;height:100%;display:flex;align-items:center;gap:24px;position:static}
.nh-brand{display:flex;align-items:center;gap:10px;color:#202b33!important;text-decoration:none!important;white-space:nowrap;flex-shrink:0}
.nh-brand>svg{width:38px;height:38px;flex:none}.nh-brand>span{font:700 19px/1.2 Arial,sans-serif;letter-spacing:-.6px}.nh-brand small{display:block;margin-top:5px;font:500 9px/1.3 Arial,sans-serif;letter-spacing:1.65px;text-transform:uppercase;color:#596b73}
.nh-desktop{margin-left:auto}.nh-desktop>ul{display:flex!important;align-items:center;gap:2px;margin:0!important;padding:0!important;list-style:none}.nh-desktop li{list-style:none;margin:0;padding:0}
.nh-direct,.nh-section>summary{display:flex;align-items:center;gap:5px;min-height:44px;padding:8px 10px;font:600 14px/1.3 Arial,sans-serif;color:#344650!important;text-decoration:none!important;border-radius:5px;cursor:pointer;list-style:none}
.nh-section>summary::-webkit-details-marker,.nh-mobile-list summary::-webkit-details-marker{display:none}.nh-section>summary svg,.nh-mobile-list summary svg{width:14px;height:14px;fill:none;stroke:currentColor;stroke-width:1.7;flex:none}.nh-section[open]>summary svg,.nh-mobile-list details[open]>summary svg{transform:rotate(180deg)}
.nh-direct:hover,.nh-section>summary:hover,.nh-section[open]>summary{background:#e9eeeb;color:#244963!important}
.nh-actions{display:flex;align-items:center;gap:10px}.nh-search-link,.nh-open,.nh-close{display:flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;background:none;border:0;color:#244963;cursor:pointer;padding:10px}.nh-search-link svg,.nh-open svg,.nh-close svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8}.nh-review-link{padding:11px 13px;border:1px solid #acbac0;border-radius:4px;font:600 13px/1.4 Arial,sans-serif;white-space:nowrap;color:#244963!important;text-decoration:none!important}.nh-review-link:hover{background:#e9eeeb}.nh-open{display:none;gap:8px;font:600 14px/1 Arial,sans-serif}
.nh-mega{position:absolute;left:0;right:0;top:100%;width:100%;background:#fff;border-top:1px solid #d5dbd7;border-bottom:1px solid #c8d1cc;box-shadow:0 16px 24px #202b3312;max-height:calc(100dvh - 100px);overflow:auto;overscroll-behavior:contain}.nh-mega-wrap{max-width:1336px;margin:auto;padding:24px 32px 0}.nh-mega-heading{display:flex;justify-content:space-between;align-items:center;padding:0 0 18px;border-bottom:1px solid #e3e7e4;font:600 18px/1.4 Arial,sans-serif}.nh-mega-heading a,.nh-mega-bottom a{font:600 13px/1.5 Arial,sans-serif;color:#244963!important;text-decoration:none!important}.nh-columns{display:grid;grid-template-columns:repeat(var(--nh-cols),minmax(0,1fr)) minmax(220px,1.1fr);gap:30px;padding:24px 0}.nh-group>p{font:700 10px/1.4 Arial,sans-serif!important;letter-spacing:1.5px;text-transform:uppercase;color:#65747a!important;margin:0 0 10px!important}.nh-group ul{margin:0!important;padding:0!important}.nh-group a{display:block;padding:9px 10px;margin-left:-10px;border-radius:4px;color:#202b33!important;text-decoration:none!important;font:600 14px/1.4 Arial,sans-serif}.nh-group a small{display:block;margin-top:3px;font:400 12px/1.5 Arial,sans-serif;color:#63717a}.nh-group a:hover{background:#f1f4f1;color:#244963!important}.nh-feature{display:flex;flex-direction:column;align-items:flex-start;gap:12px;padding:24px;background:#edf1ed;border-radius:6px;text-decoration:none!important;color:#244963!important}.nh-feature>small{font:700 9px/1.4 Arial,sans-serif;letter-spacing:1.4px}.nh-feature>strong{font:500 27px/1.15 Georgia,serif;letter-spacing:-.5px}.nh-feature>p{font:400 14px/1.6 Arial,sans-serif!important;color:#455860!important;margin:0!important}.nh-feature>span{margin-top:auto;padding-top:8px;font:700 12px/1.4 Arial,sans-serif}.nh-feature:hover{background:#e3ebe4}.nh-mega-bottom{border-top:1px solid #e3e7e4;display:flex;justify-content:space-between;gap:20px;padding:15px 0;font:400 11px/1.5 Arial,sans-serif;color:#65747a}
.nh-dialog:not([open]){display:none}.nh-dialog{box-sizing:border-box;position:fixed;inset:0;margin:0;width:100%;max-width:none;height:100dvh;max-height:none;padding:0;border:0;background:#f8f7f3;color:#202b33;overflow:hidden}.nh-dialog[open]{display:flex;flex-direction:column}.nh-dialog::backdrop{background:#202b3366}.nh-mobile-top{flex:none;display:flex;justify-content:space-between;align-items:center;gap:10px;padding:calc(14px + env(safe-area-inset-top)) 20px 14px;border-bottom:1px solid #d5dbd7}.nh-mobile-top .nh-brand>span{font-size:17px}.nh-mobile-top .nh-brand small{font-size:8px;letter-spacing:1.3px}.nh-mobile-top .nh-brand>svg{width:33px;height:33px}.nh-close{flex:none}.nh-mobile-scroll{min-height:0;flex:1;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;padding:20px}.nh-search{display:flex;width:100%;gap:8px;padding:6px;border:1px solid #bcc8c3;background:#fff;border-radius:6px;box-sizing:border-box}.nh-search input{flex:1;width:0;min-width:0;min-height:44px;border:0!important;background:transparent!important;padding:8px!important;font:400 16px/1.4 Arial,sans-serif!important;color:#202b33!important;box-shadow:none!important}.nh-search button{flex:none;border:0;border-radius:4px;padding:0 14px;background:#244963;color:white;font:600 13px/1.4 Arial,sans-serif;min-height:44px;cursor:pointer}.nh-mobile-list,.nh-mobile-list ul{list-style:none!important;margin:20px 0 0!important;padding:0!important}.nh-mobile-list li{margin:0!important;padding:0!important;list-style:none!important}.nh-mobile-list>li{border-bottom:1px solid #d5dbd7}.nh-mobile-list summary,.nh-mobile-direct{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:19px 2px;font:600 18px/1.4 Arial,sans-serif!important;color:#202b33!important;text-decoration:none!important;cursor:pointer;list-style:none}.nh-mobile-list summary svg{width:18px;height:18px}.nh-mobile-sub{padding:0 10px 18px;border-left:2px solid #78917c;margin:0 0 12px 2px}.nh-mobile-sub a{display:block;padding:12px 10px;font:500 15px/1.4 Arial,sans-serif;color:#244963!important;text-decoration:none!important}.nh-mobile-sub .nh-mobile-overview{font-weight:700;background:#edf1ed;border-radius:4px;margin-bottom:18px}.nh-mobile-sub>p{margin:18px 10px 4px!important;font:700 10px/1.4 Arial,sans-serif!important;text-transform:uppercase;letter-spacing:1.2px;color:#65747a!important}.nh-mobile-sub ul{margin:0!important}.nh-mobile-utility{display:flex;flex-wrap:wrap;gap:4px 16px;padding-top:18px}.nh-mobile-utility a{font:500 12px/1.5 Arial,sans-serif;color:#526771;padding:10px 0;text-decoration:underline;text-underline-offset:3px}.nh-mobile-bottom{flex:none;border-top:1px solid #d5dbd7;padding:12px 20px calc(12px + env(safe-area-inset-bottom));display:grid;grid-template-columns:1fr;gap:4px;background:#f8f7f3}.nh-mobile-bottom a{display:flex;justify-content:center;align-items:center;gap:12px;min-height:44px;text-decoration:none!important;font:600 14px/1.4 Arial,sans-serif;color:#244963!important}.nh-mobile-bottom a:first-child{background:#244963;color:#fff!important;border-radius:4px}.nh-nojs{display:none}.nh-visually-hidden,.nh-skip:not(:focus){position:absolute!important;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.nh-skip:focus{position:fixed;top:5px;left:5px;z-index:99999;background:#fff;padding:12px;color:#244963}.nh-header :focus-visible,.nh-dialog :focus-visible,.nh-additions :focus-visible{outline:3px solid #447c99!important;outline-offset:3px}
.nh-directory-jumps{display:flex;flex-wrap:wrap;gap:12px;margin:24px 0 20px}.nh-directory-jumps a{padding:10px 14px;border:1px solid #b8c5bd;border-radius:4px;color:#244963;font-weight:600;font-size:14px}.nh-directory-label{font-size:24px!important;margin:0 0 20px!important;scroll-margin-top:110px}.nh-additions{margin-top:48px;padding-top:32px;border-top:1px solid #cdd5cf;scroll-margin-top:110px}.nh-additions-heading>p:first-child{font-size:10px!important;font-weight:700;letter-spacing:1.5px;margin-bottom:12px!important}.nh-additions-heading h2{font-size:32px!important;margin:0 0 12px!important}.nh-additions-heading p{font-size:15px!important;line-height:1.65!important;max-width:760px}.nh-new-grid{margin-top:24px}.nh-new-tool{padding:22px!important;display:flex!important;flex-direction:column!important;gap:15px;background:#fff!important}.nh-tool-identity{display:flex;gap:12px;align-items:center}.nh-initial{width:38px;height:38px;background:#edf1ed;color:#244963;display:grid;place-items:center;border-radius:6px;flex:none;font:600 21px/1 Georgia,serif}.nh-tool-identity h3{font:600 17px/1.35 Arial,sans-serif!important;margin:0 0 4px!important}.nh-unrated{font-size:11px;color:#63717a}.nh-new-tool>p{font:400 14px/1.65 Arial,sans-serif!important;margin:0!important}.nh-new-tool .nh-check{background:#f5f6f2;padding:12px;border-radius:4px;color:#455860}.nh-check strong{display:block;font-size:11px;margin-bottom:4px;color:#202b33}.nh-new-tool>a{margin-top:auto;padding-top:2px;font-size:13px;font-weight:600;color:#244963!important}
@media(max-width:1199px){.nh-desktop,.nh-actions>.nh-search-link,.nh-review-link{display:none}.nh-open{display:flex}.nh-actions{margin-left:auto}.nh-bar{padding:0 20px}.nh-nojs{display:flex;flex-wrap:wrap;gap:12px;padding:16px}.nh-nojs a{color:#244963}.nh-header .nh-brand>span{font-size:18px}}
@media(min-width:1200px) and (max-width:1350px){.nh-bar{gap:12px;padding:0 20px}.nh-brand>span{font-size:17px}.nh-direct,.nh-section>summary{font-size:13px;padding:8px}.nh-actions{gap:4px}.nh-review-link{font-size:12px;padding:10px}.nh-brand small{font-size:8px}}
@media(max-width:360px){.nh-mobile-top{padding-left:14px;padding-right:10px}.nh-mobile-top .nh-brand>span{font-size:15px}.nh-mobile-top .nh-brand small{font-size:7px}.nh-mobile-scroll{padding:16px}.nh-mobile-bottom{padding-left:16px;padding-right:16px}.nh-bar{padding:0 14px}.nh-header .nh-brand>span{font-size:16px}.nh-brand>svg{width:32px;height:32px}.nh-brand small{font-size:8px}.nh-open{padding:8px;gap:5px}}
@media(prefers-reduced-motion:reduce){.nh-dialog *,.nh-header *{scroll-behavior:auto!important;transition:none!important}}
/* Override legacy header-wide anchor typography only within this navigation. */
body.aiht-site .nh-header .nh-direct,body.aiht-site .nh-header .nh-group a{font:600 14px/1.4 Arial,sans-serif!important;padding:11px 10px!important;min-height:44px;box-sizing:border-box}
body.aiht-site .nh-header .nh-group a small{font:400 12px/1.5 Arial,sans-serif!important}
body.aiht-site .nh-header .nh-brand{padding:0!important}
@media(min-width:1200px) and (max-width:1350px){body.aiht-site .nh-header .nh-direct{font-size:13px!important;padding:8px!important}}

/* Official directory brand icons, locally hosted. */
.nh-tool-identity .nh-directory-logo{width:56px;height:56px;flex:0 0 56px;display:grid;place-items:center;background:#fff;border:1px solid #d2d8d4;border-radius:12px;overflow:hidden}
.nh-tool-identity .nh-directory-logo img{display:block;width:40px!important;height:40px!important;object-fit:contain!important;margin:0!important;border:0!important;border-radius:6px;padding:0!important}
.nh-tool-identity>div{min-width:0}

/* Full-width navigation, paired brand identities and restrained interaction states. */
body.aiht-site .nh-header .nh-bar,body.aiht-site .nh-mega-wrap{max-width:none;width:100%;box-sizing:border-box;padding-left:clamp(24px,3vw,64px);padding-right:clamp(24px,3vw,64px)}
.nh-pair-label{display:flex;align-items:center;flex-wrap:wrap;gap:6px 8px;min-width:0}
.nh-brand-unit{display:inline-flex;align-items:center;gap:7px;min-width:0;max-width:100%}
.nh-brand-unit>span{min-width:0;overflow-wrap:anywhere}
body.aiht-site .nh-brand-unit img{display:block!important;width:26px!important;height:26px!important;object-fit:contain!important;flex:0 0 26px;border:0!important;border-radius:6px!important;margin:0!important;padding:0!important;background:#fff}
.nh-pair-vs{font-size:11px;font-weight:400;color:#65747a}
.nh-mega-compare .nh-columns{grid-template-columns:repeat(3,minmax(0,1.2fr)) minmax(190px,.85fr);gap:28px}
.nh-mega-compare .nh-feature{display:none}
.nh-group a,.nh-feature,.nh-direct,.nh-section>summary,.nh-review-link,.nh-search-link,.nh-mobile-sub a{transition:background-color 180ms ease,color 180ms ease,box-shadow 180ms ease}
.nh-section>summary svg{transition:transform 180ms ease}
.nh-group a:hover,.nh-group a:focus-visible,.nh-mobile-sub a:hover,.nh-mobile-sub a:focus-visible{background:#edf2ef!important;box-shadow:inset 3px 0 #6f8d7b;color:#244963!important}
.nh-search-link:hover,.nh-open:hover,.nh-close:hover{background:#e9eeeb;border-radius:6px}
.nh-mega-heading a:hover,.nh-mega-bottom a:hover{text-decoration:underline!important;text-underline-offset:4px}
.nh-section[open]>.nh-mega{animation:nh-reveal 160ms ease-out}
@keyframes nh-reveal{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
@media(min-width:1200px) and (max-width:1399px){.nh-mega-compare .nh-columns{gap:20px;grid-template-columns:repeat(3,minmax(0,1fr)) minmax(175px,.8fr)}}
@media(max-width:1199px){body.aiht-site .nh-header .nh-bar{padding-left:20px;padding-right:20px}.nh-pair-label{gap:6px}.nh-brand-unit{gap:6px}.nh-mobile-sub a:has(.nh-pair-label){padding-top:14px;padding-bottom:14px}}
@media(prefers-reduced-motion:reduce){.nh-section[open]>.nh-mega{animation:none}.nh-header *,.nh-dialog *{transition:none!important}}