@import url('/school-tools/tools.css');
:root{--nk-primary:#1DBD8E;--nk-primary-darker:#0FA69D;--nk-primary-dark:#028183;--nk-body-color:#52647A;--nk-heading-color:#2D3F54;--nk-bg:#f3f8f6;--nk-mint:#73CC80;--nk-aqua:#00D4C6}
html,body{min-height:100%;background:#f3f8f6;color:#52647A;font-family:Nunito,system-ui,sans-serif}body.nk-body{background:#f3f8f6}.nk-wrap{min-height:100vh;display:flex;flex-direction:column}.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid #e5efeb;box-shadow:0 3px 18px rgba(45,63,84,.045)}.site-header .nk-header-wrap{max-width:1200px;margin:auto;min-height:76px;padding:0 24px;display:flex;align-items:center;gap:28px}.site-brand{display:inline-flex;align-items:center;gap:11px;color:#2D3F54;text-decoration:none;font-weight:800;font-size:18px;white-space:nowrap}.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;color:#fff;background:linear-gradient(145deg,#1DBD8E,#028183);font-size:22px;box-shadow:0 7px 16px #1dbd8e35}.site-brand small{display:block;color:#7b8b97;font-size:10px;font-weight:600;letter-spacing:.04em}.site-nav{display:flex;align-items:center;gap:8px;margin-left:auto}.site-nav a{padding:11px 13px;color:#52647A;font-size:14px;font-weight:700;text-decoration:none;border-radius:10px;transition:.2s}.site-nav a:hover,.site-nav a:focus{color:#028183;background:#e9f8f3}.header-cta,.dash-button{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border:0;border-radius:11px;background:#1DBD8E;color:white!important;text-decoration:none;font-weight:800;box-shadow:0 6px 16px #1dbd8e35;transition:.2s}.header-cta:hover,.dash-button:hover{background:#0FA69D;transform:translateY(-1px)}.nk-content{width:100%;flex:1;padding:34px 24px 52px}.nk-content-inner{max-width:1200px;margin:0 auto}.site-footer{margin-top:auto;background:#2D3F54;color:#cbd8d7}.footer-inner{max-width:1200px;padding:30px 24px;margin:auto;display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center}.site-footer .site-brand{color:#fff}.site-footer .site-brand small{color:#aebfbe}.site-footer nav{display:flex;gap:20px;flex-wrap:wrap}.site-footer nav a{color:#d7e5e0;text-decoration:none;font-size:13px}.site-footer p{grid-column:1/-1;margin:0;color:#aebfbe;font-size:13px}.page-hero,.welcome-card{position:relative;overflow:hidden;border-radius:24px;padding:40px 44px;background:linear-gradient(120deg,#028183 0%,#0FA69D 43%,#1DBD8E 100%);color:#fff;box-shadow:0 18px 42px #02818324}.page-hero:after,.welcome-card:after{content:'';position:absolute;width:340px;height:340px;border:1px solid #ffffff30;border-radius:50%;right:-80px;top:-160px;box-shadow:0 0 0 28px #ffffff0d,0 0 0 58px #ffffff0a}.page-hero .eyebrow,.welcome-kicker{color:#d8fff1;font-size:12px;font-weight:800;letter-spacing:.14em;text-transform:uppercase}.page-hero h1,.welcome-card h1{position:relative;z-index:1;max-width:760px;margin:12px 0;font-size:clamp(30px,4vw,46px);line-height:1.12;color:#fff;font-weight:800}.page-hero p,.welcome-card p{position:relative;z-index:1;max-width:680px;margin:0;color:#e5fffa;font-size:17px;line-height:1.65}.welcome-actions{position:relative;z-index:2;display:flex;align-items:center;gap:18px;margin-top:25px}.welcome-actions .dash-button{background:#fff;color:#028183!important}.dash-link{color:white;font-weight:800;text-decoration:none}.welcome-mark{position:absolute;z-index:1;right:78px;top:50%;transform:translateY(-50%) rotate(-8deg);font-size:132px;font-weight:900;line-height:.8;color:#ffffff20}.welcome-mark span{font-size:.55em}.section-heading{display:flex;align-items:end;justify-content:space-between;gap:20px;margin:34px 0 16px}.section-heading h2{margin:5px 0 0;color:#2D3F54;font-size:24px}.section-eyebrow{color:#0FA69D;font-size:11px;font-weight:800;letter-spacing:.13em;text-transform:uppercase}.section-heading>a{color:#028183;text-decoration:none;font-weight:800}.dashboard-grid,.tiles,.subject-test-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.dash-card,.tile,.subject-test-card,.dash-panel,.card{background:#fff;border:1px solid #e3eee9;border-radius:18px;box-shadow:0 8px 26px #2d3f5408}.dash-card{position:relative;display:block;min-height:226px;padding:24px;color:#52647A;text-decoration:none;overflow:hidden;transition:.22s}.dash-card:hover,.tile:hover{transform:translateY(-3px);border-color:#9de3c8;box-shadow:0 14px 30px #2d3f5412}.dash-icon{display:grid;place-items:center;width:44px;height:44px;margin-bottom:20px;border-radius:14px;background:#e7f8f1;color:#0FA69D;font-size:23px;font-weight:900}.dash-tag{color:#0FA69D;font-size:10px;font-weight:900;letter-spacing:.12em}.dash-card h3{margin:8px 0;color:#2D3F54;font-size:22px}.dash-card p,.dash-panel p{margin:0 0 18px;color:#718294;line-height:1.6}.dash-arrow{color:#028183;font-size:13px;font-weight:800}.dashboard-bottom{display:grid;grid-template-columns:1.15fr .85fr;gap:18px;margin-top:18px}.dash-panel{padding:24px}.dash-panel h2{margin:8px 0 16px;color:#2D3F54;font-size:20px}.subject-pills{display:flex;gap:9px;flex-wrap:wrap}.subject-pills a{padding:9px 13px;background:#eef8f4;border-radius:10px;color:#0a817b;text-decoration:none;font-size:13px;font-weight:700}.tile,.subject-test-card{padding:20px;color:#52647A;text-decoration:none}.tile strong,.subject-test-card h2{color:#2D3F54}.hero,.welcome-card{margin-bottom:24px}.shell{width:100%;max-width:1200px;margin:0 auto;padding:0}.top{display:none}.layout{display:grid;grid-template-columns:minmax(0,1.7fr) minmax(240px,.8fr);gap:20px;margin-top:20px}.layout>.card{padding:24px}.card h2{color:#2D3F54}.field label{color:#52647A}.field input{border-color:#d8e7e1;border-radius:10px;outline-color:#1DBD8E}.action{background:#1DBD8E;border-radius:10px;box-shadow:0 5px 14px #1dbd8e30}.result{background:#eaf8f3;color:#028183}.result.error{background:#fff1ee;color:#a34732}.subject-test-list{grid-template-columns:repeat(3,minmax(0,1fr));margin-top:22px}.subject-test-card{padding:20px}.subject-grade{background:#eef8f4;color:#028183;border-radius:9px}.subject-all{color:#028183}.breadcrumb{max-width:1200px;margin:12px auto;padding:0 24px;color:#819097}.breadcrumb a{color:#028183}.nk-content-fluid{padding-left:24px;padding-right:24px}a{transition:color .15s}h1,h2,h3,h4{color:#2D3F54}.nk-menu-primary .nk-menu-link:hover,.text-primary{color:#0FA69D!important}.bg-primary,.btn-primary{background:#1DBD8E!important;border-color:#1DBD8E!important}@media(max-width:900px){.site-header .nk-header-wrap{gap:12px}.site-nav{gap:0}.site-nav a{padding:10px 8px}.dashboard-grid,.tiles,.subject-test-list{grid-template-columns:repeat(2,minmax(0,1fr))}.welcome-mark{right:24px;font-size:100px}.dashboard-bottom{grid-template-columns:1fr}}@media(max-width:640px){.site-header{position:relative}.site-header .nk-header-wrap{padding:12px 16px;min-height:auto;flex-wrap:wrap}.site-brand small{display:none}.site-nav{order:3;width:100%;justify-content:space-between;overflow:auto}.site-nav a{font-size:12px;padding:9px 8px}.header-cta{margin-left:auto;padding:10px 12px;font-size:12px}.nk-content{padding:22px 16px 36px}.page-hero,.welcome-card{padding:28px 24px;border-radius:20px}.page-hero p,.welcome-card p{font-size:15px}.welcome-mark{right:14px;top:18px;transform:none;font-size:64px}.welcome-actions{align-items:flex-start;flex-direction:column;gap:14px}.dashboard-grid,.tiles,.subject-test-list{grid-template-columns:1fr}.dash-card{min-height:0}.section-heading{align-items:flex-start;flex-direction:column}.layout{grid-template-columns:1fr}.footer-inner{grid-template-columns:1fr}.site-footer nav{gap:12px}.breadcrumb{padding:0 16px}}
:root{--primary:#1DBD8E;--blue:#1DBD8E;--indigo:#028183;--purple:#0FA69D;--green:#73CC80;--teal:#0FA69D;--cyan:#00D4C6;--secondary:#52647A;--dark:#2D3F54;--gray-dark:#2D3F54;--gray:#52647A;--lighter:#f3f8f6;--light:#e3eee9}
a{color:#028183}.hero{position:relative;overflow:hidden;border-radius:20px;padding:34px 36px;background:linear-gradient(120deg,#028183 0%,#0FA69D 46%,#1DBD8E 100%);color:#fff;box-shadow:0 14px 34px #02818320}.hero:after{content:'';position:absolute;width:280px;height:280px;border:1px solid #ffffff30;border-radius:50%;right:-55px;top:-140px;box-shadow:0 0 0 26px #ffffff0d,0 0 0 52px #ffffff09}.hero .eyebrow{position:relative;z-index:1;color:#d8fff1}.hero h1{position:relative;z-index:1;color:#fff;font-size:clamp(28px,3.5vw,40px);line-height:1.16;margin:10px 0}.hero p{position:relative;z-index:1;max-width:690px;color:#e5fffa;font-size:16px;line-height:1.6}.tile small,.subject-test-card p{color:#718294}.subject-test-card a{color:#028183}
.test-catalog-hero,.test-page-hero{margin-bottom:20px}.test-catalog-layout,.test-page-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:20px;align-items:start}.test-catalog-main,.test-workspace{min-width:0}.grade-picker{padding:20px;margin-bottom:20px}.grade-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:13px}.grade-link{display:flex;min-width:110px;flex-direction:column;gap:3px;padding:11px 14px;border:1px solid #e3eee9;border-radius:12px;color:#2D3F54!important;text-decoration:none;background:#fff}.grade-link small{color:#718294;font-size:11px}.grade-link.is-active,.grade-link:hover{background:#eaf8f3;border-color:#9de3c8;color:#028183!important}.test-list-section .section-heading{margin:6px 0 16px}.test-list-section .section-heading h2{font-size:21px}.test-count{color:#718294;font-size:13px}.tests-grid,.related-test-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.test-list-card{padding:19px;display:flex;flex-direction:column;min-height:195px;transition:.2s}.test-list-card:hover,.related-test-card:hover{transform:translateY(-2px);border-color:#9de3c8;box-shadow:0 12px 24px #2d3f5410}.test-card-meta{display:flex;gap:9px;align-items:center;color:#829198;font-size:11px}.test-class-chip{padding:5px 8px;border-radius:8px;background:#eaf8f3;color:#028183;font-weight:800}.test-list-card h3{margin:12px 0 7px;font-size:18px;line-height:1.35}.test-list-card h3 a{color:#2D3F54;text-decoration:none}.test-list-card p{margin:0 0 14px;color:#718294;font-size:13px;line-height:1.5}.test-card-link{margin-top:auto;color:#028183;font-size:13px;font-weight:800;text-decoration:none}.test-catalog-aside,.test-help-card{position:sticky;top:96px;padding:22px}.test-catalog-aside h2,.test-help-card h2{font-size:19px;margin:8px 0 12px}.test-catalog-aside ol,.test-help-card ol{padding-left:20px;color:#718294;font-size:14px;line-height:1.7}.test-catalog-aside>a,.test-help-card>a{color:#028183;font-size:13px;font-weight:800;text-decoration:none}.empty-tests{padding:22px;color:#718294}.test-pager{text-align:center;margin:20px 0}.test-pager .pagination{display:flex;justify-content:center;gap:7px;flex-wrap:wrap;padding:0;list-style:none}.test-pager .pagination li a,.test-pager .pagination li span{display:block;padding:8px 12px;border:1px solid #deebe5;border-radius:9px;background:#fff;color:#028183;text-decoration:none}.test-pager .pagination .selected span{background:#1DBD8E;color:#fff;border-color:#1DBD8E}.test-workspace{padding:24px}.test-instructions{display:flex;gap:12px;align-items:center;padding:14px 16px;margin-bottom:20px;border-radius:14px;background:#eef8f4}.test-instructions-icon{display:grid;place-items:center;flex:0 0 38px;height:38px;border-radius:12px;background:#1DBD8E;color:#fff;font-weight:900}.test-instructions strong{color:#2D3F54}.test-instructions p{margin:2px 0 0;color:#718294;font-size:13px}.test-question-card{min-width:0;margin:0 0 14px;padding:19px;border:1px solid #e3eee9;border-radius:15px}.test-question-card legend{display:flex;align-items:flex-start;gap:12px;width:100%;padding:0;color:#2D3F54;font-size:16px;font-weight:800;line-height:1.5;white-space:normal}.question-number{display:grid;place-items:center;flex:0 0 30px;height:30px;border-radius:10px;background:#eaf8f3;color:#028183;font-size:13px}.answer-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin:14px 0 0 42px}.answer-option{display:flex;align-items:center;gap:10px;min-height:42px;padding:9px 12px;border:1px solid #e3eee9;border-radius:10px;color:#52647A;cursor:pointer;transition:.15s}.answer-option:hover{background:#f2faf7;border-color:#9de3c8}.answer-option input{accent-color:#0FA69D}.test-submit-button{display:inline-flex;align-items:center;gap:12px;margin:6px 0 0 42px;padding:13px 20px;border:0;border-radius:11px;background:#1DBD8E;color:#fff;font-size:15px;font-weight:800;cursor:pointer;box-shadow:0 6px 16px #1dbd8e35}.related-tests{margin:28px 0}.related-tests .section-heading{margin-bottom:14px}.related-test-card{display:flex;flex-direction:column;gap:9px;padding:17px;text-decoration:none}.related-test-card span,.related-test-card small{color:#028183;font-size:12px;font-weight:700}.related-test-card strong{color:#2D3F54;line-height:1.4}.test-subject-list{padding:22px;margin:22px 0}.test-subject-list h2{margin:5px 0 14px;font-size:21px}.test-subject-list ul{margin:0;padding:0;list-style:none}.test-subject-list li{margin:7px 0}.test-subject-list li a{color:#028183;text-decoration:none;font-weight:650}.test-subject-list .row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.test-subject-list .row>[class*=col-]{width:auto;float:none;padding:0 12px}@media(max-width:900px){.test-catalog-layout,.test-page-layout{grid-template-columns:1fr}.test-catalog-aside,.test-help-card{position:static}.test-subject-list .row{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.test-catalog-layout,.test-page-layout{gap:14px}.tests-grid,.related-test-grid{grid-template-columns:1fr}.test-workspace{padding:15px}.test-question-card{padding:14px}.answer-options{grid-template-columns:1fr;margin-left:0}.test-submit-button{margin-left:0;width:100%;justify-content:center}.test-subject-list .row{grid-template-columns:1fr}.grade-link{flex:1;min-width:125px}.test-catalog-hero h1,.test-page-hero h1{font-size:28px}}

/* Логотип с совой */
.site-brand img{display:block;width:278px;height:auto;max-width:100%}.site-brand{flex-shrink:0}.site-footer .site-brand img{width:250px}
@media(max-width:640px){.site-brand img{width:210px}.site-footer .site-brand img{width:235px}}

/* Keep link hover and keyboard focus states within the site's green palette. */
a:hover,a:focus{color:#0FA69D}
.link-primary,.link-on-primary:hover{color:#028183!important}
.dash-link:hover,.dash-link:focus{color:#d8fff1}
.header-cta:hover,.header-cta:focus,.dash-button:hover,.dash-button:focus{color:#fff!important}
.welcome-actions .dash-button:hover,.welcome-actions .dash-button:focus{color:#028183!important}
.dash-card:hover,.dash-card:focus,.tile:hover,.tile:focus{color:#0FA69D;border-color:#9de3c8}
/* Словарь синонимов */
.synonym-page{max-width:980px;margin:0 auto;padding:20px 16px;color:#263447;line-height:1.65}.synonym-page h1{margin:0 0 16px}.synonym-page h2{margin:26px 0 12px}.synonym-search{margin:20px 0;padding:18px;background:#f4f7fb;border-radius:12px}.synonym-search label{display:block;font-weight:600;margin-bottom:7px}.synonym-search>div{display:flex;gap:8px}.synonym-search input{min-width:0;flex:1;padding:11px 13px;border:1px solid #cbd5e1;border-radius:7px;font:inherit}.synonym-search button{padding:10px 18px;border:0;border-radius:7px;background:#3b6fd8;color:#fff;font:inherit;cursor:pointer}.synonym-letters{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0 22px}.synonym-letters a,.synonym-pagination a,.synonym-pagination span{display:inline-block;padding:5px 9px;border:1px solid #d9e1ec;border-radius:6px;text-decoration:none}.synonym-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:8px 20px;padding-left:22px}.synonym-pagination{display:flex;flex-wrap:wrap;gap:6px;margin:24px 0}.synonym-pagination [aria-current=page]{background:#3b6fd8;color:white;border-color:#3b6fd8}.synonym-count{font-weight:600}.synonym-note{padding:12px 15px;background:#fff8e5;border-left:4px solid #e6b94a;border-radius:4px}.synonym-items{columns:2;column-gap:48px;padding-left:28px}.synonym-items li{break-inside:avoid;padding:3px 0}@media(max-width:600px){.synonym-search>div{flex-direction:column}.synonym-search button{width:100%}.synonym-items{columns:1}.synonym-list{grid-template-columns:1fr 1fr}}

/* Shared Russian-language catalog and common page components. */
:root{--nk-primary:#1DBD8E;--nk-primary-hover:#0FA69D;--nk-link:#028183;--nk-heading:#2D3F54;--nk-text:#52647A;--nk-muted:#718294;--nk-page:#F3F8F6;--nk-surface:#FFFFFF;--nk-border:#E3EEE9;--nk-tint:#EAF8F3;--nk-radius:16px;--nk-shadow:0 8px 26px rgba(45,63,84,.06)}
.nk-content-inner>.container,.nk-content-inner>article.container,.nk-content-inner>main.container{width:100%;max-width:none;padding-left:0;padding-right:0;margin-left:0;margin-right:0}
.language-hub{max-width:1200px;margin:0 auto}.language-hero{padding:clamp(24px,4vw,42px);border-radius:22px;background:linear-gradient(120deg,#028183,#0FA69D 48%,#1DBD8E);color:#fff;box-shadow:var(--nk-shadow)}.language-hero h1{margin:8px 0;color:#fff;font-size:clamp(30px,4vw,44px);line-height:1.15}.language-hero p{max-width:760px;margin:0;color:#effff8;line-height:1.65}.language-hero .language-eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.language-group{margin-top:30px}.language-group h2{margin:0 0 14px;font-size:23px}.language-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.language-card{position:relative;display:flex;flex-direction:column;gap:8px;min-height:130px;padding:20px 48px 20px 20px;border:1px solid var(--nk-border);border-radius:var(--nk-radius);background:var(--nk-surface);box-shadow:var(--nk-shadow);text-decoration:none}.language-card strong{color:var(--nk-heading);font-size:17px}.language-card span{color:var(--nk-muted);font-size:14px;line-height:1.5}.language-card b{position:absolute;right:20px;top:20px;color:var(--nk-link)}.language-card:hover,.language-card:focus-visible{border-color:#9de3c8;background:var(--nk-tint)}
.nk-content-inner :is(form:not([data-tool]),.synonym-search,.paronim-search,.root-search,.odnokoren-search,.perenos-search){margin:20px 0;padding:18px;border:1px solid var(--nk-border);border-radius:var(--nk-radius);background:var(--nk-surface)}
.nk-content-inner :is(input[type=search],input[type=text],select){max-width:100%;min-height:44px;padding:9px 12px;border:1px solid var(--nk-border);border-radius:10px;background:#fff;color:var(--nk-text);font:inherit}.nk-content-inner :is(button,input[type=submit]){min-height:44px;padding:10px 18px;border:0;border-radius:10px;background:var(--nk-primary);color:#fff;font:inherit;font-weight:800;cursor:pointer}.nk-content-inner :is(button,input[type=submit]):hover{background:var(--nk-primary-hover)}.nk-content-inner :focus-visible{outline:3px solid #028183;outline-offset:3px}.nk-content-inner :is(.synonym-list,.paronim-list,.root-list,.morphem-words,.udar-word-list){max-width:none}.nk-content-inner :is(.synonym-note,.perenos-note,.udar-note,.root-note){border-radius:12px;background:var(--nk-tint);border-color:var(--nk-primary)}.nk-content-inner table{display:block;max-width:100%;overflow-x:auto;border-collapse:collapse}.nk-content-inner th,.nk-content-inner td{border-color:var(--nk-border)}.nk-content-inner :is(.pagination,.synonym-pagination,.paronim-pagination){gap:8px}.nk-content-inner .pagination a,.nk-content-inner .pagination span{border-radius:9px}
@media(max-width:900px){.language-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:640px){.language-grid{grid-template-columns:1fr}.language-group{margin-top:24px}.language-card{min-height:0}.nk-content-inner>.container,.nk-content-inner>article.container,.nk-content-inner>main.container{padding:0}}
/* One 1200 px outer grid for the site shell, with a single horizontal gutter. */
.nk-content{padding:28px 0 48px}.nk-content-inner{width:100%;max-width:1200px;padding:0 24px;box-sizing:border-box}.breadcrumb{max-width:none;margin:10px 0 18px;padding:0;color:var(--nk-muted)}.footer-inner,.site-header .nk-header-wrap{box-sizing:border-box;width:100%}.service-hub-link{margin:0 0 18px;font-size:14px;font-weight:800}.service-hub-link a{display:inline-flex;padding:9px 13px;border:1px solid var(--nk-border);border-radius:10px;background:var(--nk-surface);text-decoration:none;color:var(--nk-link)}
@media(max-width:640px){.nk-content{padding:20px 0 36px}.nk-content-inner{padding:0 16px}}
@media(max-width:640px){.site-nav{justify-content:flex-start;flex-wrap:wrap;gap:4px 8px;overflow:visible}.site-nav a{white-space:nowrap}.nk-content-inner{min-width:0}}
/* Shared word list and keyset navigation for language catalogs. */
.nk-content-inner :is(.perenos-word-list,.synonym-list,.paronim-list,.root-list,.morphem-words,.udar-word-list){display:grid;grid-template-columns:repeat(auto-fill,minmax(190px,1fr));gap:8px 12px;margin:18px 0;padding:0;list-style:none}
.nk-content-inner :is(.perenos-word-list,.synonym-list,.paronim-list,.root-list,.morphem-words,.udar-word-list)>li{min-width:0;padding:9px 12px;border:1px solid var(--nk-border);border-radius:10px;background:var(--nk-surface)}
.nk-content-inner .catalog-cursor{display:flex;justify-content:space-between;gap:12px;margin:22px 0}
.nk-content-inner .catalog-cursor a{display:inline-flex;min-height:44px;align-items:center;padding:9px 16px;border:1px solid var(--nk-border);border-radius:10px;background:var(--nk-surface);font-weight:800;text-decoration:none}
.nk-content-inner .catalog-cursor a:hover{border-color:var(--nk-primary);background:var(--nk-tint)}
@media(max-width:480px){.nk-content-inner :is(.perenos-word-list,.synonym-list,.paronim-list,.root-list,.morphem-words,.udar-word-list){grid-template-columns:1fr}}

/* Russian service design pilot: stress. Components are scoped until approved. */
.ru-tool{--ru-space:28px;line-height:1.65;color:var(--nk-text)}
.ru-tool h1{font-size:clamp(30px,3.5vw,44px);line-height:1.16;letter-spacing:-.035em;font-weight:800;margin:12px 0 16px}
.ru-tool h2{font-size:22px;line-height:1.3;letter-spacing:-.02em;font-weight:800;margin:0 0 8px}
.ru-tool p{margin:0 0 16px}.ru-tool a{text-decoration:none}
.ru-eyebrow{display:block;color:var(--nk-link);font-size:11px;letter-spacing:.12em;text-transform:uppercase;font-weight:800}
.ru-lead{max-width:630px;font-size:16px;line-height:1.75;color:var(--nk-text)}
.ru-hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:center;padding:40px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:24px;box-shadow:var(--nk-shadow)}
.ru-hero-content{min-width:0}.ru-hero h1{margin-top:10px}.ru-hero .ru-lead{margin-bottom:24px}
.nk-content-inner .ru-tool .ru-search{margin:0;padding:0;background:transparent;border:0;border-radius:0}
.ru-search label{display:block;font-size:14px;font-weight:800;color:var(--nk-heading);margin:0 0 9px}
.ru-search-row{display:flex;gap:10px}.nk-content-inner .ru-search input{width:100%;min-width:0;flex:1;min-height:54px;padding:13px 16px;border:1px solid #cedfd7;border-radius:12px;font-size:16px;color:var(--nk-heading);box-shadow:inset 0 2px 4px rgba(45,63,84,.025)}
.nk-content-inner .ru-search input::placeholder{color:var(--nk-muted)}
.nk-content-inner .ru-search button{display:flex;align-items:center;justify-content:center;gap:14px;min-height:54px;padding:12px 20px;border-radius:12px;font-size:14px;white-space:nowrap;box-shadow:0 5px 12px rgba(29,189,142,.14)}
.ru-search button span{font-size:20px}.ru-tool .ru-hint{margin:9px 0 0;font-size:12px;line-height:1.6;color:var(--nk-muted)}
.ru-try{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-top:18px;font-size:12px}.ru-try>span{color:var(--nk-muted);margin-right:3px}.ru-try a{padding:4px 10px;border-radius:7px;background:var(--nk-tint);color:var(--nk-link);font-weight:700}
.ru-demo{position:relative;transform:rotate(2deg);padding:26px 22px 0;background:var(--nk-tint);border:1px solid var(--nk-border);border-radius:20px;box-shadow:9px 12px 0 var(--nk-page);text-align:center;overflow:hidden}
.ru-demo-label{display:block;font-size:11px;color:var(--nk-link);font-weight:800;letter-spacing:.03em}.ru-demo-word{font-size:44px;letter-spacing:-.04em;line-height:1.6;margin:22px 0 0;color:var(--nk-heading);font-weight:800;white-space:nowrap}.ru-demo-word span{color:var(--nk-link);text-decoration:underline;text-decoration-color:var(--nk-primary);text-underline-offset:10px;text-decoration-thickness:3px}.ru-demo-caption{margin:8px 0 28px;font-size:13px;font-weight:700;color:var(--nk-link)}.ru-demo-caption span{display:block;font-size:22px;line-height:1.3;margin-left:112px}.ru-demo-bottom{display:flex;justify-content:space-between;gap:10px;margin:0 -22px;padding:16px 20px;background:var(--nk-surface);border-top:1px solid var(--nk-border);font-size:12px;font-weight:700;color:var(--nk-text)}
.ru-panel{padding:28px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:20px;box-shadow:0 4px 20px rgba(45,63,84,.025);min-width:0}
.ru-browse{margin-top:24px}.ru-section-head{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.ru-section-head p{margin:0;color:var(--nk-muted);font-size:14px}.ru-section-head .ru-eyebrow{margin-bottom:8px}.ru-text-link{flex-shrink:0;font-size:13px;font-weight:800;color:var(--nk-link)}.ru-text-link span{margin-left:8px}
.ru-alphabet{display:flex;flex-wrap:wrap;gap:7px}.ru-alphabet a{display:grid;place-items:center;min-width:38px;min-height:40px;padding:7px 10px;background:var(--nk-page);border:1px solid var(--nk-border);border-radius:9px;font-size:14px;font-weight:800;color:var(--nk-text)}.ru-alphabet .ru-alphabet-all{padding:7px 15px}.ru-alphabet a.is-active{background:var(--nk-link);border-color:var(--nk-link);color:white}.ru-alphabet a:hover{background:var(--nk-tint);border-color:var(--nk-primary);color:var(--nk-link)}
.ru-bottom-layout{display:grid;grid-template-columns:minmax(0,1.65fr) minmax(0,1fr);gap:24px;margin-top:24px}.ru-guide{min-width:0;padding:28px;border-radius:20px;background:var(--nk-tint);border:1px solid var(--nk-border)}.ru-guide h2{margin-top:10px}.ru-guide p{font-size:14px}.ru-guide-example{display:inline-block;font-size:34px;font-weight:800;letter-spacing:.04em;color:var(--nk-heading);margin:0 0 10px}.ru-guide-example span{color:var(--nk-link)}.ru-guide-note{padding-top:16px;border-top:1px solid #d3e8df;font-size:12px;color:var(--nk-muted);line-height:1.7}
.ru-word-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 24px;margin:0;padding:0;list-style:none}.ru-word-grid li{min-width:0;border-bottom:1px solid var(--nk-border)}.ru-word-grid a{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:54px;padding:10px 5px;color:var(--nk-heading);font-size:15px;font-weight:700;border-radius:6px}.ru-word-grid a>span:first-child{overflow-wrap:anywhere}.ru-word-arrow{color:var(--nk-link);font-size:16px;flex-shrink:0}.ru-word-grid a:hover{color:var(--nk-link);background:var(--nk-tint)}.ru-bottom-layout .ru-word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
.ru-page-head{margin:26px 0}.ru-page-head .ru-lead{margin:0}.ru-page-head h1{max-width:900px;overflow-wrap:anywhere}
.ru-panel>.ru-search{max-width:760px}.ru-panel>.ru-search+.ru-section-head{margin-top:30px}.ru-count{font-size:12px;color:var(--nk-muted)}.ru-list-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;border-top:1px solid var(--nk-border);padding-top:26px;margin:26px 0 12px}.ru-list-heading h2{margin:0}.ru-list-heading a{font-size:13px}.ru-tool .catalog-cursor{margin-bottom:0}.ru-tool .catalog-cursor a[rel=next]{margin-left:auto}
.ru-empty{text-align:center;max-width:520px;margin:36px auto 10px;padding:12px}.ru-empty p{font-size:14px;color:var(--nk-muted)}.ru-empty-icon{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 18px;border-radius:18px;background:var(--nk-tint);color:var(--nk-link);font-size:28px;font-weight:800}.ru-secondary-link{display:inline-block;padding:10px 16px;border:1px solid var(--nk-border);border-radius:10px;font-size:14px;font-weight:800}
.ru-exact{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:26px 0;padding:20px 24px;background:var(--nk-tint);border:1px solid #d3e8df;border-radius:14px;color:var(--nk-link);font-size:14px;font-weight:800}.ru-exact small{display:block;font-size:11px;font-weight:700;margin-bottom:4px}.ru-exact strong{font-size:24px;color:var(--nk-heading)}
.ru-answer-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}.ru-answer-main,.ru-answer-aside{min-width:0}.ru-answer{padding:34px}.ru-tool .ru-answer-word{font-size:clamp(40px,5vw,66px);font-weight:800;color:var(--nk-heading);line-height:1.5;letter-spacing:-.025em;margin:18px 0 6px;overflow-wrap:anywhere}.ru-answer-word .udar-stressed{color:var(--nk-link);background:var(--nk-tint);border-radius:10px;padding:0 3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.ru-answer-summary{font-size:16px}.ru-answer-summary strong{color:var(--nk-link)}.ru-facts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:28px 0 0;border-top:1px solid var(--nk-border);padding-top:24px}.ru-facts dt{font-size:12px;font-weight:600;color:var(--nk-muted);margin-bottom:6px}.ru-facts dd{margin:0;font-size:24px;font-weight:800;color:var(--nk-heading);overflow-wrap:anywhere}.ru-facts dd small{display:block;font-size:12px;color:var(--nk-muted);font-weight:400;margin-top:2px}.ru-facts>div:last-child:nth-child(odd){grid-column:1/-1}.ru-tool .ru-missing{margin-top:20px}.ru-related{margin-top:24px}.ru-related-list{list-style:none;padding:0;margin:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.ru-related-list a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px;border:1px solid var(--nk-border);border-radius:10px;font-size:13px;font-weight:700;min-height:54px}.ru-related-list a:hover{background:var(--nk-tint)}.ru-related-list a span{flex-shrink:0}.ru-return{display:flex;justify-content:space-between;gap:18px;margin:22px 0;font-size:13px;font-weight:800}.ru-next-search h2{font-size:18px;margin-bottom:20px}.ru-next-search .ru-search label{font-size:12px}.ru-next-search .ru-search-row{flex-direction:column}.ru-answer-aside .ru-guide{margin-top:24px}
/* Avoid duplicating the Russian section link already available in breadcrumbs. */
.nk-content-inner:has(.ru-stress)>.service-hub-link{display:none}
@media(max-width:1000px){.ru-hero{grid-template-columns:minmax(0,1fr) 240px;gap:28px;padding:30px}.ru-demo-word{font-size:36px}.ru-search-row{flex-wrap:wrap}.ru-search-row input{flex-basis:220px}.ru-answer-layout{grid-template-columns:minmax(0,1fr) 280px}.ru-word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:760px){.ru-hero{grid-template-columns:1fr;gap:26px}.ru-demo{transform:none;max-width:360px;width:100%;justify-self:center;box-shadow:none}.ru-demo-word{margin-top:12px;font-size:40px}.ru-demo-caption{margin-bottom:18px}.ru-bottom-layout,.ru-answer-layout{grid-template-columns:1fr}.ru-answer-aside{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.ru-answer-aside .ru-guide{margin:0}.ru-related-list{grid-template-columns:1fr}.ru-section-head{align-items:flex-start;flex-wrap:wrap}.ru-hero h1{font-size:34px}}
@media(max-width:480px){.ru-hero,.ru-panel,.ru-guide,.ru-answer{padding:22px;border-radius:16px}.ru-hero{gap:22px}.ru-tool h1,.ru-hero h1{font-size:30px}.ru-tool h2{font-size:20px}.ru-lead{font-size:14px}.ru-search-row{flex-direction:column;gap:8px}.ru-search-row input{flex-basis:auto}.nk-content-inner .ru-search button{width:100%;min-height:50px}.ru-demo{max-width:none}.ru-demo-word{font-size:38px}.ru-word-grid,.ru-bottom-layout .ru-word-grid{grid-template-columns:1fr}.ru-alphabet{gap:6px}.ru-alphabet a{min-width:38px;min-height:42px}.ru-bottom-layout,.ru-answer-layout{gap:18px}.ru-answer-aside{grid-template-columns:1fr;gap:18px}.ru-browse,.ru-bottom-layout,.ru-related{margin-top:18px}.ru-exact{align-items:flex-start;flex-direction:column;padding:18px}.ru-facts{gap:16px}.ru-facts dd{font-size:21px}.ru-return{flex-wrap:wrap}.ru-count{display:block}.ru-page-head{margin:20px 0}.ru-page-head h1{font-size:28px}.ru-answer-summary{font-size:14px}}
@media(prefers-reduced-motion:reduce){.ru-tool a,.ru-tool button{transition:none}}
.ru-tool .ru-answer-word.is-long{font-size:clamp(26px,3.6vw,46px)}
@media(max-width:1000px){.ru-hero .ru-search-row{flex-direction:column}.ru-hero .ru-search-row input{flex-basis:auto}.ru-hero .ru-search-row button{width:100%}}
/* The shared header needs two rows before navigation outgrows a tablet. */
@media(min-width:641px) and (max-width:1000px){.site-header .nk-header-wrap{flex-wrap:wrap;padding:14px 24px;gap:12px}.site-header .header-cta{margin-left:auto}.site-header .site-nav{order:3;flex:0 0 100%;margin-left:0;justify-content:space-between;gap:4px}.site-header .site-nav a{white-space:nowrap;padding:8px 10px}}
.nk-body.bg-lighter:has(.ru-stress){background:var(--nk-page)!important}
.ru-bottom-layout{align-items:start}
@media(min-width:761px) and (max-width:900px){.ru-bottom-layout{grid-template-columns:1.2fr 1fr}}

/* The approved service components now serve every Russian-language tool. */
.nk-body.bg-lighter:has(.ru-service){background:var(--nk-page)!important}
.nk-content-inner:has(.ru-service)>.service-hub-link{display:none}
.ru-demo-generic .ru-demo-word{font-size:clamp(23px,2.2vw,30px);white-space:normal;overflow-wrap:anywhere;line-height:1.4;margin:28px 0 32px;letter-spacing:-.025em}
.ru-demo-generic .ru-demo-bottom{display:block;font-size:12px;line-height:1.6}
.ru-parts-section{margin-top:24px}.ru-parts-section h2{font-size:18px}.ru-parts-filter{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.ru-parts-filter a{padding:8px 13px;border:1px solid var(--nk-border);border-radius:9px;color:var(--nk-link);background:var(--nk-tint);font-size:13px;font-weight:700}.ru-parts-filter a.is-active{color:#fff;background:var(--nk-link);border-color:var(--nk-link)}.ru-parts-filter a:hover{border-color:var(--nk-primary)}
.ru-word-grid small{display:block;color:var(--nk-muted);font-size:11px;font-weight:400;line-height:1.5;margin-top:3px}.ru-unlinked{display:block;min-height:54px;padding:12px 5px;font-size:15px;overflow-wrap:anywhere}.ru-analysis+.ru-analysis,.ru-phonetic+.ru-phonetic{margin-top:20px}.ru-tool .ru-analysis-title{margin:12px 0 20px;font-size:clamp(24px,3vw,34px);overflow-wrap:anywhere}.ru-analysis-facts{margin:0 0 20px}.ru-analysis-facts>div{display:grid;grid-template-columns:minmax(120px,.8fr) minmax(0,1.2fr);gap:20px;padding:16px 0;border-top:1px solid var(--nk-border)}.ru-analysis-facts dt{margin:0;color:var(--nk-muted);font-size:13px}.ru-analysis-facts dd{margin:0;color:var(--nk-heading);font-size:15px;font-weight:700;overflow-wrap:anywhere}.ru-context{padding:16px 20px;background:var(--nk-tint);border:1px solid var(--nk-border);border-radius:12px;font-size:14px;overflow-wrap:anywhere}.ru-analysis>.ru-text-link{font-size:12px}
.ru-morpheme-scheme{display:flex;flex-wrap:wrap;align-items:start;gap:8px;margin:28px 0}.ru-morpheme{display:flex;flex-direction:column;align-items:center;gap:8px;padding:12px 10px 8px;border-radius:10px;background:var(--nk-page);max-width:100%}.ru-morpheme b{padding:8px 6px 2px;color:var(--nk-heading);font-size:32px;line-height:1.25;overflow-wrap:anywhere;max-width:100%;border-top:3px solid var(--nk-muted)}.ru-morpheme small{color:var(--nk-muted);font-size:10px;max-width:110px;text-align:center;line-height:1.4}.ru-morpheme-root{background:var(--nk-tint)}.ru-morpheme-root b{border-color:var(--nk-link);border-radius:45% 45% 0 0;color:var(--nk-link)}.ru-morpheme-prefix b{border-right:3px solid var(--nk-muted)}.ru-morpheme-suffix b{border-radius:45% 45% 0 0}.ru-morpheme-ending b{border:2px solid var(--nk-link);padding:6px;color:var(--nk-link)}.ru-morpheme-separator b{border:0}.ru-answer-chips{display:flex;flex-wrap:wrap;gap:10px;margin:22px 0 28px;padding:0;list-style:none}.ru-answer-chips li{padding:10px 18px;border:1px solid var(--nk-border);border-radius:12px;background:var(--nk-tint);color:var(--nk-link);font-size:26px;font-weight:800;overflow-wrap:anywhere;max-width:100%}.ru-text-list{padding-left:22px;margin:16px 0;line-height:1.8}.ru-text-list li{padding:6px 0;overflow-wrap:anywhere}.ru-answer>h2:not(:first-child),.ru-answer>h3{margin-top:24px}.ru-example-list{list-style:none;margin:16px 0;padding:0}.ru-example-list li{padding:14px 18px;border-left:3px solid var(--nk-primary);border-radius:0 10px 10px 0;background:var(--nk-page);margin-bottom:10px;font-size:14px;overflow-wrap:anywhere}.ru-tool h3{font-size:18px;line-height:1.5}.ru-word-group{margin-top:24px}.ru-word-group h3{margin-bottom:8px}
.ru-phonetic-head{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin:20px 0!important;overflow-wrap:anywhere}.ru-phonetic-head strong{font-size:clamp(24px,3vw,38px);color:var(--nk-heading)}.ru-phonetic-head>span{font-size:26px;color:var(--nk-link);font-weight:700;max-width:100%;overflow-wrap:anywhere}.ru-stressed{color:var(--nk-link);background:var(--nk-tint);border-radius:6px;padding:0 3px}.ru-table-scroll{max-width:100%;overflow-x:auto;margin:22px 0;border:1px solid var(--nk-border);border-radius:12px}.nk-content-inner .ru-sound-table{display:table;width:100%;margin:0;font-size:14px}.ru-sound-table th{background:var(--nk-tint);text-align:left;color:var(--nk-link);font-weight:800;white-space:nowrap}.ru-sound-table th,.ru-sound-table td{padding:12px 14px;border-bottom:1px solid var(--nk-border)}.ru-sound-table td:first-child{font-size:20px;font-weight:800;color:var(--nk-heading)}.ru-sound-table td:nth-child(2){color:var(--nk-link);font-weight:700;white-space:nowrap}.ru-sound-table tr:last-child td{border-bottom:0}.ru-sound-table tr:nth-child(even){background:var(--nk-page)}
.ru-rod-result:not(:empty){margin-top:24px}.nk-content-inner .ru-try button{padding:4px 10px;min-height:0;background:var(--nk-tint);color:var(--nk-link);font-size:12px;border-radius:7px;font-weight:700}.nk-content-inner .ru-search button:disabled{opacity:.65;cursor:wait}.ru-gender-examples{margin:0}.ru-gender-examples>div{display:grid;grid-template-columns:90px 1fr;gap:20px;padding:18px 0;border-top:1px solid var(--nk-border)}.ru-gender-examples dt{font-weight:800;color:var(--nk-link)}.ru-gender-examples dd{margin:0}.ru-gender-examples dd span{display:block;font-size:13px;color:var(--nk-muted);margin-top:4px}.ru-rod .ru-guide>.ru-secondary-link{margin-top:20px}
@media(max-width:760px){.ru-morpheme b{font-size:26px}.ru-analysis-facts>div{grid-template-columns:1fr;gap:7px}.ru-analysis-facts dd{font-size:14px}.ru-answer-chips li{font-size:22px}.ru-tool .ru-analysis-title{font-size:26px}}
@media(max-width:480px){.ru-sound-table th,.ru-sound-table td{padding:10px;font-size:12px}.ru-demo-generic .ru-demo-word{font-size:27px}.ru-morpheme{padding:10px 8px}.ru-morpheme b{font-size:24px}.ru-gender-examples>div{grid-template-columns:80px 1fr;gap:14px}}
.ru-word-partners{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px;padding:0 5px 12px;font-size:11px;color:var(--nk-muted)}.ru-word-partners a{display:inline;min-height:0;padding:0;font-size:12px;font-weight:600;color:var(--nk-link)}
.ru-answer-main .ru-word-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ru-backlinks summary{cursor:pointer;color:var(--nk-heading);font-size:18px;font-weight:800;line-height:1.5}.ru-backlinks summary span{font-size:13px;color:var(--nk-muted);font-weight:600}.ru-backlinks[open] summary{margin-bottom:18px}.nk-content-inner .ru-try button:hover{background:var(--nk-link);color:#fff}
@media(max-width:480px){.ru-answer-main .ru-word-grid{grid-template-columns:1fr}}

/* Russian-language hub: the service design, without eyebrow labels. */
.ru-hub-hero{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:48px;align-items:center;padding:40px;border:1px solid var(--nk-border);border-radius:24px;background:var(--nk-surface);box-shadow:var(--nk-shadow)}.ru-hub-intro{min-width:0}.ru-hub-intro h1{margin:0 0 18px;font-size:clamp(34px,4vw,48px)}.ru-hub-intro .ru-lead{margin-bottom:24px;max-width:640px}.ru-hub-shortcuts{display:flex;flex-wrap:wrap;gap:9px}.ru-hub-shortcuts a{display:flex;align-items:center;gap:12px;padding:8px 12px;border:1px solid var(--nk-border);border-radius:9px;background:var(--nk-page);color:var(--nk-link);font-size:12px;font-weight:700}.ru-hub-shortcuts a:hover{background:var(--nk-tint);border-color:var(--nk-primary)}.ru-hub-shortcuts a span{font-size:17px}
.ru-hub-illustration{position:relative;padding:28px 20px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-tint);transform:rotate(2deg);box-shadow:8px 10px 0 var(--nk-page);text-align:center}.ru-hub-word{display:inline-flex;align-items:baseline;justify-content:center;gap:0;padding:14px 0 2px;color:var(--nk-heading);font-size:48px;font-weight:800;letter-spacing:-.04em;line-height:1.15;white-space:nowrap}.ru-hub-word-root,.ru-hub-word-ending{position:relative;display:inline-block}.ru-hub-word-root:before{content:"";position:absolute;left:0;right:0;top:-.32em;height:.55em;border-top:3px solid var(--nk-link);border-radius:50% 50% 0 0}.ru-hub-word-ending:after{content:"";position:absolute;inset:0 -.025em .01em -.025em;border:2px solid var(--nk-link);pointer-events:none}.ru-hub-word-topics{display:flex;flex-wrap:wrap;justify-content:center;gap:7px;margin:20px 0}.ru-hub-word-topics span{padding:7px 10px;border:1px solid var(--nk-border);border-radius:8px;background:var(--nk-surface);font-size:12px;font-weight:700;color:var(--nk-link)}.ru-hub-illustration p{margin:0;font-size:12px;color:var(--nk-muted)}
.ru-hub-group{margin-top:36px;scroll-margin-top:100px}.ru-hub-group .ru-section-head{margin-bottom:18px}.ru-hub-group h2{font-size:24px}.ru-hub-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.ru-hub-card{display:flex;flex-direction:column;align-items:flex-start;min-width:0;min-height:238px;padding:24px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface);box-shadow:0 4px 20px rgba(45,63,84,.025);transition:border-color .18s,box-shadow .18s,transform .18s}.ru-hub-card:hover{border-color:var(--nk-primary);box-shadow:var(--nk-shadow);transform:translateY(-2px)}.ru-hub-mark{display:grid;place-items:center;width:46px;height:46px;margin-bottom:18px;border-radius:13px;background:var(--nk-tint);color:var(--nk-link);font-size:22px;font-weight:800;line-height:1}.ru-hub-card h3{margin:0 0 9px;font-size:20px;font-weight:800;line-height:1.35;letter-spacing:-.02em;color:var(--nk-heading)}.ru-hub-card p{margin:0 0 22px;font-size:14px;color:var(--nk-muted);line-height:1.65}.ru-hub-card-action{display:flex;justify-content:space-between;align-items:center;gap:18px;width:100%;margin-top:auto;color:var(--nk-link);font-size:13px;font-weight:800}.ru-hub-card-action>span{font-size:22px;line-height:1}
.ru-hub-help{display:flex;align-items:flex-start;gap:18px;margin-top:32px;padding:26px 28px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-tint)}.ru-hub-help-icon{display:grid;place-items:center;flex:0 0 40px;height:40px;border-radius:12px;background:var(--nk-surface);color:var(--nk-link);font-size:22px;font-weight:800}.ru-hub-help h2{font-size:20px;margin:0 0 8px}.ru-hub-help p{max-width:900px;margin:0;font-size:14px;line-height:1.75}
@media(max-width:1000px){.ru-hub-hero{grid-template-columns:minmax(0,1fr) 250px;gap:30px;padding:30px}.ru-hub-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.ru-hub-group{scroll-margin-top:172px}}
@media(max-width:760px){.ru-hub-hero{grid-template-columns:1fr;gap:26px}.ru-hub-illustration{transform:none;box-shadow:none;width:100%;max-width:360px;justify-self:center}.ru-hub-group{margin-top:28px}}
@media(max-width:480px){.ru-hub-hero{padding:24px 22px;border-radius:16px}.ru-hub-intro h1{font-size:34px}.ru-hub-shortcuts{gap:8px}.ru-hub-shortcuts a{justify-content:space-between;width:100%;font-size:13px}.ru-hub-grid{grid-template-columns:1fr;gap:12px}.ru-hub-card{min-height:0;padding:22px;border-radius:16px}.ru-hub-card h3{font-size:20px}.ru-hub-mark{margin-bottom:15px}.ru-hub-group h2{font-size:22px}.ru-hub-group{scroll-margin-top:20px}.ru-hub-help{padding:22px;gap:12px;flex-direction:column;border-radius:16px}.ru-hub-help h2{font-size:20px}}
@media(prefers-reduced-motion:reduce){.ru-hub-card{transition:none}.ru-hub-card:hover{transform:none}}

/* Home: fewer repeated cards, varied task, tool and editorial layouts. */
.nk-body.bg-lighter:has(.home-page){background:var(--nk-page)!important}.home-page{color:var(--nk-text);line-height:1.65}.home-page .welcome-card{margin-bottom:0}.home-page .welcome-copy{position:relative;z-index:2;max-width:760px}.home-hero-art{position:absolute;z-index:1;width:290px;height:auto;right:24px;top:50%;transform:translateY(-50%);pointer-events:none}.home-start{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));margin:24px 0 30px;border:1px solid var(--nk-border);border-radius:16px;background:var(--nk-surface)}.home-start>a{display:flex;align-items:center;gap:14px;min-width:0;padding:18px 22px;color:var(--nk-heading);text-decoration:none}.home-start>a+a{border-left:1px solid var(--nk-border)}.home-start>a:hover{background:var(--nk-tint)}.home-start>a:first-child{border-radius:16px 0 0 16px}.home-start>a:last-child{border-radius:0 16px 16px 0}.home-start-icon{display:grid;place-items:center;flex:0 0 40px;height:40px;border-radius:11px;background:var(--nk-tint);color:var(--nk-link);font-size:21px;font-weight:800}.home-start strong{display:block;font-size:15px;font-weight:800}.home-start small{display:block;color:var(--nk-muted);font-size:12px}.home-start b{margin-left:auto;color:var(--nk-link);font-size:18px}
.home-learning-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:24px}.home-panel{min-width:0;display:flex;flex-direction:column;padding:28px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:20px;box-shadow:0 4px 20px rgba(45,63,84,.025)}.home-section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}.home-section-heading h2,.home-calculators h2{font-size:25px;font-weight:800;letter-spacing:-.02em;line-height:1.3;margin:0 0 8px}.home-section-heading p,.home-calculators p{font-size:14px;color:var(--nk-muted);margin:0}.home-count{flex-shrink:0;font-size:11px;font-weight:700;padding:5px 10px;border-radius:8px;background:var(--nk-tint);color:var(--nk-link)}.home-service-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 24px;margin-bottom:22px}.home-service-list>a,.home-subject-list>a{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0;min-height:64px;padding:12px 0;border-bottom:1px solid var(--nk-border);color:var(--nk-heading);font-size:14px;font-weight:700;text-decoration:none}.home-service-list>a>span:first-child{overflow-wrap:anywhere}.home-service-list>a>span:last-child,.home-subject-list>a>span:last-child{color:var(--nk-link);flex-shrink:0;font-size:20px}.home-service-list>a:hover,.home-subject-list>a:hover{color:var(--nk-link)}.home-section-link{display:inline-flex;align-items:center;gap:12px;color:var(--nk-link);font-size:13px;font-weight:800;text-decoration:none}.home-panel>.home-section-link{margin-top:auto;align-self:flex-start}.home-subject-list{margin-bottom:22px}.home-subject-list>a{min-height:48px}.home-russian,.home-practice,.home-articles{scroll-margin-top:100px}
.home-calculators{display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.5fr);gap:36px;align-items:center;margin:24px 0 36px;padding:28px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-tint)}.home-math-mark{display:block;color:var(--nk-link);font-size:23px;letter-spacing:.2em;font-weight:800;margin-bottom:12px}.home-calculators .home-section-link{margin-top:14px}.home-calculator-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.home-calculator-links>a{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:62px;padding:14px 16px;border:1px solid var(--nk-border);border-radius:12px;background:var(--nk-surface);color:var(--nk-heading);font-size:13px;font-weight:700;line-height:1.5;text-decoration:none}.home-calculator-links>a>span{flex-shrink:0;color:var(--nk-link);font-size:20px}.home-calculator-links>a:hover{border-color:var(--nk-primary);color:var(--nk-link)}
.home-articles>.home-section-heading{margin-bottom:20px}.home-articles>.home-section-heading>.home-section-link{flex-shrink:0}.home-articles-empty{display:grid;grid-template-columns:150px minmax(0,1fr);gap:32px;align-items:center;padding:32px 36px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-surface)}.home-articles-empty h3{font-size:24px;font-weight:800;letter-spacing:-.02em;margin:0 0 10px}.home-articles-empty p{max-width:650px;margin:0 0 16px;color:var(--nk-muted);font-size:14px;line-height:1.75}.home-editorial-graphic{position:relative;padding:16px 18px;background:var(--nk-tint);border:1px solid var(--nk-border);border-radius:10px;transform:rotate(-6deg);box-shadow:7px 8px 0 var(--nk-page)}.home-editorial-graphic span{display:block;font-size:30px;color:var(--nk-link);font-weight:800;margin-bottom:12px}.home-editorial-graphic i{display:block;height:3px;background:#cde9dd;border-radius:3px;margin:10px 0}.home-editorial-graphic i:last-child{width:65%}.home-article-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:18px}.home-article{display:flex;flex-direction:column;min-width:0;padding:24px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface)}.home-article-featured{padding:32px;background:var(--nk-tint)}.home-article-meta{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;margin-bottom:16px;color:var(--nk-muted);font-size:11px}.home-article-meta>span{color:var(--nk-link);font-weight:800}.home-article h3{margin:0 0 12px;font-size:21px;line-height:1.4;font-weight:800;overflow-wrap:anywhere}.home-article-featured h3{font-size:28px}.home-article h3 a{color:var(--nk-heading);text-decoration:none}.home-article h3 a:hover{color:var(--nk-link)}.home-article p{font-size:14px;line-height:1.8;margin:0 0 22px;color:var(--nk-muted);overflow-wrap:anywhere}.home-article>.home-section-link{margin-top:auto;align-self:flex-start}.home-learning-note{display:flex;align-items:baseline;gap:32px;margin-top:30px;padding:22px 0;border-top:1px solid var(--nk-border)}.home-learning-note strong{flex:0 0 250px;font-size:17px;color:var(--nk-heading)}.home-learning-note p{margin:0;font-size:13px;color:var(--nk-muted);line-height:1.8}.home-page :focus-visible{outline:3px solid var(--nk-link);outline-offset:3px}
@media(max-width:1100px) and (min-width:761px){.home-page .welcome-copy{max-width:calc(100% - 230px)}.home-hero-art{width:240px;right:10px}}
@media(max-width:1000px){.home-start>a{padding:16px;gap:10px}.home-start strong{font-size:14px}.home-start small{font-size:11px}.home-start-icon{flex-basis:32px;height:32px;font-size:18px}.home-learning-grid{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:18px}.home-service-list{grid-template-columns:1fr}.home-russian,.home-practice,.home-articles{scroll-margin-top:172px}.home-calculators{gap:24px}.home-calculator-links{grid-template-columns:1fr}}
@media(max-width:760px){.home-hero-art{position:relative;top:auto;right:auto;transform:none;display:block;width:240px;max-width:100%;margin:20px auto -14px}.home-start{grid-template-columns:1fr}.home-start>a+a{border-left:0;border-top:1px solid var(--nk-border)}.home-start>a:first-child{border-radius:16px 16px 0 0}.home-start>a:last-child{border-radius:0 0 16px 16px}.home-start small{font-size:12px}.home-start strong{font-size:15px}.home-start>a{padding:16px 20px}.home-learning-grid{grid-template-columns:1fr}.home-service-list{grid-template-columns:repeat(2,minmax(0,1fr))}.home-calculators{grid-template-columns:1fr}.home-calculator-links{grid-template-columns:repeat(2,minmax(0,1fr))}.home-learning-note{flex-direction:column;gap:10px}.home-learning-note strong{flex-basis:auto}.home-article-grid{grid-template-columns:1fr}.home-article-featured{grid-row:auto}}
@media(max-width:480px){.home-start{margin:18px 0 22px}.home-panel{padding:22px;border-radius:16px}.home-section-heading{align-items:flex-start;flex-wrap:wrap;gap:12px}.home-section-heading h2,.home-calculators h2{font-size:23px}.home-service-list{grid-template-columns:1fr;margin-bottom:18px}.home-service-list>a{min-height:52px}.home-calculators{padding:22px;border-radius:16px;margin:18px 0 28px}.home-calculator-links{grid-template-columns:1fr;gap:8px}.home-calculator-links>a{min-height:50px}.home-articles-empty{grid-template-columns:1fr;padding:24px;gap:24px;border-radius:16px}.home-editorial-graphic{width:120px}.home-articles-empty h3{font-size:22px}.home-article,.home-article-featured{padding:22px}.home-article-featured h3{font-size:24px}.home-russian,.home-practice,.home-articles{scroll-margin-top:20px}.home-hero-art{width:220px}}

.home-page .welcome-actions .dash-button{flex-shrink:0;white-space:nowrap}
@media(max-width:1100px) and (min-width:761px){.home-page .welcome-actions{flex-wrap:wrap;gap:14px}}

/* Live test directory: compact subjects, real grade selection and topic search. */
.nk-body.bg-lighter:has(.test-directory){background:var(--nk-page)!important}.test-directory{color:var(--nk-text);line-height:1.65}.td-hero{padding:36px 40px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:24px;box-shadow:var(--nk-shadow)}.td-hero h1{font-size:clamp(30px,3.4vw,44px);line-height:1.2;letter-spacing:-.03em;font-weight:800;margin:0 0 16px}.td-hero>p{max-width:700px;margin:0 0 26px;font-size:16px;line-height:1.8}.nk-content-inner .td-search{padding:0;margin:0;max-width:740px;border:0;border-radius:0;background:transparent}.td-search label{display:block;color:var(--nk-heading);font-size:14px;font-weight:800;margin-bottom:9px}.td-search>div{display:flex;gap:10px}.nk-content-inner .td-search input{flex:1;min-width:0;width:100%;min-height:54px;padding:12px 16px;border:1px solid #cedfd7;border-radius:12px;font-size:16px;color:var(--nk-heading)}.nk-content-inner .td-search button{display:inline-flex;align-items:center;justify-content:center;gap:18px;flex-shrink:0;min-height:54px;padding:12px 22px;font-size:14px;border-radius:12px}.td-search button span{font-size:20px}.td-search>p{margin:9px 0 0;font-size:12px;color:var(--nk-muted)}
.td-grades{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.2fr);gap:24px;align-items:center;padding:24px 28px;margin:24px 0 30px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-tint)}.td-grades-heading h2{font-size:22px;font-weight:800;margin:0 0 6px}.td-grades-heading p{font-size:13px;max-width:350px;color:var(--nk-muted);margin:0}.td-grade-links{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.td-grade-links a{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:70px;padding:10px 6px;border:1px solid var(--nk-border);border-radius:10px;background:var(--nk-surface);text-align:center;color:var(--nk-heading);text-decoration:none}.td-grade-links strong{font-size:13px;font-weight:800;white-space:nowrap}.td-grade-links small{font-size:10px;color:var(--nk-muted);margin-top:4px;white-space:nowrap}.td-grade-links a.is-active{background:var(--nk-link);border-color:var(--nk-link);color:#fff}.td-grade-links a.is-active small{color:#eaf8f3}.td-grade-links a:hover{border-color:var(--nk-primary)}
.td-layout{display:grid;grid-template-columns:minmax(0,1fr) 290px;gap:24px;align-items:start}.td-main{min-width:0;scroll-margin-top:100px}.td-section-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:18px}.td-section-heading h2{font-size:25px;font-weight:800;margin:0 0 6px;line-height:1.3}.td-section-heading p{font-size:13px;color:var(--nk-muted);margin:0}.td-count{flex-shrink:0;color:var(--nk-muted);font-size:12px}.td-subject-panel{padding:24px 28px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface);margin-bottom:20px}.td-subject-panel>h3{font-size:18px;font-weight:800;margin:0 0 8px}.td-primary-list,.td-other-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 28px;margin:0;padding:0;list-style:none}.td-primary-list>li,.td-other-list>li{min-width:0;border-bottom:1px solid var(--nk-border)}.td-primary-list>li{padding:6px 0 20px}.td-subject-link{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:18px 0;min-height:78px;text-decoration:none;color:var(--nk-heading)}.td-subject-link strong{display:block;font-size:16px;font-weight:800;overflow-wrap:anywhere;line-height:1.5}.td-subject-link small{display:block;margin-top:4px;font-size:11px;font-weight:400;color:var(--nk-muted)}.td-subject-link>span:last-child{font-size:22px;color:var(--nk-link);flex-shrink:0}.td-subject-link:hover strong{color:var(--nk-link)}.td-subject-grades{display:flex;flex-wrap:wrap;gap:6px}.td-subject-grades a{padding:5px 9px;border:1px solid var(--nk-border);border-radius:7px;background:var(--nk-page);color:var(--nk-link);font-size:11px;font-weight:700;text-decoration:none}.td-subject-grades a:hover{border-color:var(--nk-primary);background:var(--nk-tint)}.td-aside{position:sticky;top:100px;min-width:0}.td-help{padding:24px;background:var(--nk-tint);border:1px solid var(--nk-border);border-radius:18px}.td-help h2,.td-reminder h2{font-size:20px;font-weight:800;margin:0 0 20px;line-height:1.4}.td-help ol{list-style:none;margin:0;padding:0}.td-help li{display:flex;align-items:flex-start;gap:12px;margin-bottom:20px}.td-help li:last-child{margin-bottom:0}.td-help li>span{display:grid;place-items:center;flex:0 0 28px;height:28px;border-radius:9px;background:var(--nk-surface);color:var(--nk-link);font-size:12px;font-weight:800}.td-help strong{display:block;font-size:13px;color:var(--nk-heading);margin-bottom:5px}.td-help p,.td-reminder p{font-size:12px;color:var(--nk-muted);line-height:1.8;margin:0}.td-reminder{padding:24px;margin-top:18px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface)}.td-reminder h2{font-size:18px;margin-bottom:12px}.td-reminder a{font-size:12px;margin-top:16px}.test-directory :focus-visible{outline:3px solid var(--nk-link);outline-offset:3px}
@media(max-width:1000px){.td-grades{grid-template-columns:1fr;gap:18px}.td-grades-heading p{max-width:none}.td-layout{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.td-primary-list,.td-other-list{grid-template-columns:1fr}.td-aside{top:172px}.td-main{scroll-margin-top:172px}.td-section-heading{flex-wrap:wrap;gap:10px}}
@media(max-width:760px){.td-layout{grid-template-columns:1fr}.td-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.td-reminder{margin-top:0}.td-primary-list,.td-other-list{grid-template-columns:repeat(2,minmax(0,1fr))}.td-hero{padding:28px}.td-grades{padding:24px}}
@media(max-width:480px){.td-hero{padding:24px 22px;border-radius:16px}.td-hero h1{font-size:30px}.td-hero>p{font-size:14px}.td-search>div{flex-direction:column}.td-grades{padding:22px;margin:18px 0 24px;border-radius:16px}.td-grade-links{grid-template-columns:repeat(2,minmax(0,1fr))}.td-grade-links>a:first-child{grid-column:1/-1;min-height:52px;flex-direction:row;gap:12px}.td-grade-links strong{font-size:14px}.td-grade-links small{font-size:11px}.td-grade-links>a:first-child small{margin-top:0}.td-primary-list,.td-other-list{grid-template-columns:1fr}.td-subject-panel{padding:22px;border-radius:16px}.td-section-heading h2{font-size:23px}.td-aside{grid-template-columns:1fr}.td-help,.td-reminder{padding:22px;border-radius:16px}.td-main{scroll-margin-top:20px}}
.nk-content-inner .test-directory .td-search{margin:0;padding:0;border:0;border-radius:0;background:transparent}

/* Subject test lists: readable topics and question previews in a flat list. */
.ts-results-panel{min-width:0;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:18px;padding:0 28px}.ts-test-list{list-style:none;margin:0;padding:0}.ts-test-list>li+li{border-top:1px solid var(--nk-border)}.ts-test-item{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:24px;align-items:center;padding:26px 0}.ts-test-copy{min-width:0}.ts-test-meta{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:12px;color:var(--nk-muted);font-size:11px}.ts-grade-chip{padding:4px 9px;border-radius:7px;background:var(--nk-tint);color:var(--nk-link);font-weight:800}.ts-test-item h3{font-size:19px;font-weight:800;line-height:1.45;letter-spacing:-.01em;margin:0 0 10px;overflow-wrap:anywhere}.ts-test-item h3 a{color:var(--nk-heading);text-decoration:none}.ts-test-item h3 a:hover{color:var(--nk-link)}.ts-preview{font-size:13px;line-height:1.75;color:var(--nk-muted);margin:0;overflow-wrap:anywhere}.ts-preview>span{color:var(--nk-text)}.ts-test-action{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:44px;padding:10px 14px;border:1px solid var(--nk-border);border-radius:10px;background:var(--nk-tint);color:var(--nk-link);font-size:12px;font-weight:800;text-decoration:none;white-space:nowrap}.ts-test-action>span{font-size:19px}.ts-test-action:hover{background:var(--nk-link);border-color:var(--nk-link);color:#fff}.ts-return{display:inline-block;margin-top:24px;color:var(--nk-link);font-size:13px;font-weight:800;text-decoration:none}.ts-empty{text-align:center;padding:40px 20px}.ts-empty>span{display:grid;place-items:center;width:52px;height:52px;background:var(--nk-tint);color:var(--nk-link);border-radius:16px;margin:0 auto 18px;font-size:24px;font-weight:800}.ts-empty h3{font-size:22px;margin:0 0 12px;font-weight:800}.ts-empty p{font-size:14px;color:var(--nk-muted);margin-bottom:18px}.ts-cursor a[rel=next]{margin-left:auto}.test-subject-page .td-hero>p{max-width:760px}
@media(max-width:1000px){.ts-test-item{grid-template-columns:1fr;gap:16px}.ts-test-action{justify-self:start}.ts-results-panel{padding:0 24px}}
@media(max-width:480px){.ts-results-panel{padding:0 22px;border-radius:16px}.ts-test-item{padding:22px 0}.ts-test-item h3{font-size:18px}.ts-cursor{flex-wrap:wrap}.ts-cursor a{font-size:12px}.ts-empty{padding:30px 0}.ts-empty h3{font-size:20px}}

/* Quiz workspace and result: clear choices, real progress and answer feedback. */
.nk-body.bg-lighter:has(.quiz-page){background:var(--nk-page)!important}.quiz-page{color:var(--nk-text);line-height:1.65}.quiz-header{padding:34px 40px;border:1px solid var(--nk-border);border-radius:24px;background:var(--nk-surface);box-shadow:var(--nk-shadow);margin-bottom:24px}.quiz-meta{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:14px;font-size:12px;font-weight:700;color:var(--nk-muted)}.quiz-meta a{color:var(--nk-link);text-decoration:none}.quiz-header h1{max-width:940px;font-size:clamp(30px,3.5vw,44px);line-height:1.2;letter-spacing:-.03em;font-weight:800;margin:0 0 14px;overflow-wrap:anywhere}.quiz-header>p{max-width:730px;margin:0;font-size:15px;line-height:1.8}.quiz-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:24px;align-items:start}.quiz-main{min-width:0}.nk-content-inner .quiz-page .quiz-form{padding:0;margin:0;border:0;border-radius:0;background:transparent}.quiz-question{min-width:0;max-width:100%;padding:24px 28px;margin:0 0 18px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface);scroll-margin-top:100px;transition:border-color .15s}.quiz-question legend{float:left;display:flex;align-items:flex-start;gap:14px;width:100%;padding:0;margin:0;color:var(--nk-heading);font-size:18px;font-weight:800;line-height:1.6;white-space:normal}.quiz-question legend>span:last-child{min-width:0;overflow-wrap:anywhere}.quiz-question-number{display:inline-grid;place-items:center;flex:0 0 32px;min-width:32px;height:32px;border-radius:10px;background:var(--nk-tint);color:var(--nk-link);font-size:13px;font-weight:800;line-height:1}.quiz-question-hint{clear:both;padding-top:12px;margin:0 0 16px 46px;color:var(--nk-muted);font-size:12px}.quiz-answers{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:10px;clear:both}.quiz-answer{display:flex;align-items:center;gap:11px;min-width:0;min-height:58px;margin:0;padding:13px 16px;border:1px solid var(--nk-border);border-radius:11px;color:var(--nk-heading);font-size:14px;line-height:1.6;cursor:pointer;transition:background .15s,border-color .15s}.quiz-answer>span{min-width:0;overflow-wrap:anywhere}.quiz-answer input{flex:0 0 17px;width:17px;height:17px;margin:0;accent-color:var(--nk-link)}.quiz-answer:hover{border-color:var(--nk-primary);background:var(--nk-page)}.quiz-answer:has(input:checked){background:var(--nk-tint);border-color:var(--nk-link);color:var(--nk-link)}.quiz-answer:has(input:focus-visible){outline:3px solid var(--nk-link);outline-offset:3px}.quiz-answer input:focus-visible{outline:none}.quiz-question.is-answered{border-color:#cde9dd}.quiz-submit{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:24px 28px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-tint)}.quiz-submit strong{display:block;color:var(--nk-heading);font-size:17px;font-weight:800;margin-bottom:6px}.quiz-submit p{margin:0;color:var(--nk-muted);font-size:12px;line-height:1.7}.nk-content-inner .quiz-submit button{display:inline-flex;align-items:center;justify-content:center;gap:14px;min-height:50px;padding:12px 20px;border-radius:11px;font-size:14px;white-space:nowrap;scroll-margin-top:100px}.quiz-submit button:disabled{opacity:.7;cursor:wait}.quiz-submit .quiz-validation:not(:empty){margin-top:10px;color:var(--nk-heading);font-weight:700}
.quiz-aside{position:sticky;top:100px;min-width:0}.quiz-progress-panel,.quiz-help{padding:24px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface)}.quiz-progress-panel h2,.quiz-help h2{font-size:20px;line-height:1.4;font-weight:800;margin:0 0 14px}.quiz-progress-text{margin:0 0 12px;font-size:14px}.quiz-progress-text strong{color:var(--nk-link);font-size:24px;font-weight:800}.quiz-page progress{display:block;appearance:none;-webkit-appearance:none;width:100%;height:8px;border:0;border-radius:20px;overflow:hidden;background:var(--nk-border);color:var(--nk-primary)}.quiz-page progress::-webkit-progress-bar{background:var(--nk-border);border-radius:20px}.quiz-page progress::-webkit-progress-value{background:var(--nk-primary);border-radius:20px;transition:width .2s}.quiz-page progress::-moz-progress-bar{background:var(--nk-primary);border-radius:20px}.quiz-progress-hint{font-size:12px;color:var(--nk-muted);margin:16px 0;line-height:1.7}.quiz-progress-panel>a{display:inline-block;color:var(--nk-link);font-size:12px;font-weight:800;text-decoration:none}.quiz-help{background:var(--nk-tint);margin-top:18px}.quiz-help p{font-size:13px;color:var(--nk-muted);margin:0 0 16px;line-height:1.8}.quiz-help a{font-size:12px}.quiz-form-errors{padding:20px 24px;margin-bottom:18px;border:1px solid var(--nk-link);border-radius:16px;background:var(--nk-tint)}.quiz-form-errors h2{font-size:20px;font-weight:800;margin:0 0 10px}.quiz-form-errors ul{padding-left:20px;margin:0;font-size:13px;line-height:1.8}.quiz-form-errors a{text-decoration:underline}.quiz-empty h2{font-size:22px}
.quiz-result-summary{display:grid;grid-template-columns:200px minmax(0,1fr);gap:36px;align-items:center;padding:32px 40px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-tint)}.quiz-score{padding-right:28px;border-right:1px solid #cde9dd}.quiz-score>strong{display:block;color:var(--nk-link);font-size:56px;line-height:1.3;font-weight:800;letter-spacing:-.03em;white-space:nowrap}.quiz-score strong span{font-size:28px;color:var(--nk-muted);font-weight:600}.quiz-score p{margin:8px 0 0;color:var(--nk-muted);font-size:13px}.quiz-result-copy h2{font-size:26px;font-weight:800;margin:0 0 10px;line-height:1.4}.quiz-result-copy p{max-width:720px;color:var(--nk-text);font-size:14px;margin:0 0 20px;line-height:1.8}.quiz-result-actions{display:flex;flex-wrap:wrap;align-items:center;gap:20px;margin:22px 0 32px}.quiz-retry{display:inline-flex;align-items:center;min-height:48px;padding:12px 18px;border-radius:11px;background:var(--nk-primary);color:white;font-size:14px;font-weight:800;text-decoration:none}.quiz-retry:hover,.quiz-retry:focus{background:var(--nk-primary-hover);color:#fff}.quiz-review{max-width:940px}.quiz-review-heading h2,.quiz-related h2{font-size:25px;font-weight:800;line-height:1.4;margin:0 0 7px}.quiz-review-heading p,.quiz-related>p{font-size:13px;color:var(--nk-muted);margin:0 0 20px}.quiz-review-item{margin-bottom:12px;padding:20px 24px;border:1px solid var(--nk-border);border-radius:16px;background:var(--nk-surface)}.quiz-review-item summary{display:flex;align-items:flex-start;gap:14px;cursor:pointer;list-style:none}.quiz-review-item summary::-webkit-details-marker{display:none}.quiz-review-question{flex:1;min-width:0;color:var(--nk-heading);font-size:15px;font-weight:700;line-height:1.7;overflow-wrap:anywhere}.quiz-review-status{flex-shrink:0;margin-top:4px;padding:4px 9px;border-radius:7px;background:var(--nk-page);color:var(--nk-heading);font-size:11px;font-weight:700}.quiz-review-item.is-correct .quiz-review-status{background:var(--nk-tint);color:var(--nk-link)}.quiz-review-item summary:after{content:'+';flex-shrink:0;margin-top:1px;color:var(--nk-link);font-size:21px}.quiz-review-item[open] summary:after{content:'−'}.quiz-review-body{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin:18px 0 0 46px;padding-top:18px;border-top:1px solid var(--nk-border)}.quiz-review-body h3{margin:0 0 8px;font-size:12px;font-weight:600;color:var(--nk-muted)}.quiz-review-body ul{padding:0;margin:0;list-style:none}.quiz-review-body li{font-size:14px;color:var(--nk-heading);line-height:1.8;overflow-wrap:anywhere}.quiz-related{margin-top:32px;padding:26px 28px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface)}.quiz-related ul{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 24px;list-style:none;margin:0;padding:0}.quiz-related a{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:60px;padding:10px 0;border-top:1px solid var(--nk-border);color:var(--nk-heading);font-size:14px;font-weight:700;text-decoration:none}.quiz-related a>span:first-child{min-width:0;overflow-wrap:anywhere}.quiz-related a>span:last-child{flex-shrink:0;font-size:22px;color:var(--nk-link)}.quiz-related a:hover{color:var(--nk-link)}.quiz-page :focus-visible{outline:3px solid var(--nk-link);outline-offset:3px}
@media(max-width:1000px){.quiz-layout{grid-template-columns:1fr;gap:18px}.quiz-aside{display:contents}.quiz-main{grid-row:2}.quiz-progress-panel{position:sticky;top:148px;z-index:20;grid-row:1;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:8px 16px;padding:14px 22px;box-shadow:var(--nk-shadow);border-radius:14px}.quiz-progress-panel h2,.quiz-progress-hint{display:none}.quiz-progress-text{margin:0;font-size:13px}.quiz-progress-text strong{font-size:18px}.quiz-progress-panel progress{grid-column:1/-1;grid-row:2;height:5px}.quiz-progress-panel>a{grid-column:2;grid-row:1}.quiz-help{grid-row:3;margin:0}.quiz-question,.quiz-submit button{scroll-margin-top:260px}}
@media(max-width:640px){.quiz-progress-panel{top:0}.quiz-question,.quiz-submit button{scroll-margin-top:110px}.quiz-related ul{grid-template-columns:1fr}.quiz-submit{flex-direction:column;align-items:stretch;gap:18px}.nk-content-inner .quiz-submit button{width:100%}.quiz-result-summary{grid-template-columns:1fr;gap:20px;padding:26px}.quiz-score{padding:0 0 18px;border-right:0;border-bottom:1px solid #cde9dd}.quiz-score>strong{font-size:48px}.quiz-review-item summary{flex-wrap:wrap;gap:10px}.quiz-review-question{flex-basis:calc(100% - 42px)}.quiz-review-status{margin-left:42px;margin-top:0}.quiz-review-body{grid-template-columns:1fr;gap:16px;margin-left:0}.quiz-review-item summary:after{margin-left:auto}.quiz-review{max-width:none}}
@media(max-width:480px){.quiz-header{padding:24px 22px;border-radius:16px;margin-bottom:18px}.quiz-header h1{font-size:30px}.quiz-header>p{font-size:14px}.quiz-meta{font-size:11px;gap:6px 12px}.quiz-question{padding:22px;border-radius:16px;margin-bottom:14px}.quiz-question legend{font-size:16px;gap:12px}.quiz-question-hint{margin-left:44px;font-size:11px}.quiz-answers{grid-template-columns:1fr;gap:8px}.quiz-answer{min-height:54px;padding:12px 14px}.quiz-submit{padding:22px;border-radius:16px}.quiz-progress-panel{padding:12px 16px;gap:7px 10px}.quiz-progress-text{font-size:12px}.quiz-progress-panel>a{font-size:11px}.quiz-related{padding:22px;border-radius:16px}.quiz-related h2,.quiz-review-heading h2{font-size:22px}.quiz-result-copy h2{font-size:23px}.quiz-result-summary{padding:24px 22px;border-radius:16px}.quiz-review-item{padding:18px}.quiz-result-actions{gap:16px}}
@media(prefers-reduced-motion:reduce){.quiz-answer,.quiz-question,.quiz-page progress::-webkit-progress-value{transition:none}}

/* Calculator directory: grouped task links and live catalog search. */
.nk-body.bg-lighter:has(.calculator-directory){background:var(--nk-page)!important}.calculator-directory{color:var(--nk-text);line-height:1.65}.calculator-directory [hidden]{display:none!important}.nk-content-inner .calculator-directory .td-search{margin:0;padding:0;border:0;border-radius:0;background:transparent}.cd-quick{display:flex;flex-wrap:wrap;align-items:center;gap:9px;margin:22px 0 30px}.cd-quick>strong{font-size:12px;color:var(--nk-muted);margin-right:4px;font-weight:600}.cd-quick a{display:inline-flex;align-items:center;gap:14px;min-height:40px;padding:8px 12px;border:1px solid var(--nk-border);border-radius:9px;background:var(--nk-surface);color:var(--nk-link);font-size:12px;font-weight:700;text-decoration:none}.cd-quick a>span{font-size:18px}.cd-quick a:hover{background:var(--nk-tint);border-color:var(--nk-primary)}.cd-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:24px;align-items:start}.cd-main{min-width:0;scroll-margin-top:100px}.cd-catalog-heading{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:20px}.cd-catalog-heading h2{font-size:25px;line-height:1.4;font-weight:800;margin:0 0 12px}.cd-sections{display:flex;flex-wrap:wrap;gap:8px}.cd-sections a{display:inline-flex;align-items:center;gap:12px;padding:7px 10px;border:1px solid var(--nk-border);border-radius:8px;background:var(--nk-tint);color:var(--nk-link);font-size:12px;font-weight:700;text-decoration:none}.cd-sections a:hover{border-color:var(--nk-primary)}.cd-match-info{flex-shrink:0;display:flex;flex-direction:column;align-items:flex-end;gap:7px;font-size:12px;color:var(--nk-muted)}.cd-match-info a{font-size:11px;color:var(--nk-link);text-decoration:none}.cd-group{padding:26px 28px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:18px;margin-bottom:20px;scroll-margin-top:100px}.cd-group-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:8px}.cd-group-heading h2{font-size:22px;font-weight:800;line-height:1.4;margin:0 0 5px}.cd-group-heading p{margin:0;font-size:13px;color:var(--nk-muted);line-height:1.6}.cd-group-count{display:grid;place-items:center;flex:0 0 32px;height:32px;border-radius:10px;background:var(--nk-tint);color:var(--nk-link);font-size:12px;font-weight:800}.cd-tool-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px;list-style:none;margin:0;padding:0}.cd-tool{min-width:0;border-bottom:1px solid var(--nk-border)}.cd-tool>a{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;padding:20px 0;min-height:132px;text-decoration:none;color:var(--nk-heading)}.cd-tool>a>div{min-width:0}.cd-tool h3{font-size:17px;font-weight:800;line-height:1.5;margin:0 0 8px;overflow-wrap:anywhere}.cd-tool p{font-size:12px;line-height:1.8;color:var(--nk-muted);margin:0;overflow-wrap:anywhere}.cd-tool>a>span{flex-shrink:0;color:var(--nk-link);font-size:22px;line-height:1.5}.cd-tool>a:hover h3{color:var(--nk-link)}.cd-aside{position:sticky;top:100px;min-width:0}.cd-note{padding:24px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface);margin-top:18px}.cd-note h2{font-size:18px;font-weight:800;line-height:1.4;margin:0 0 12px}.cd-note p{font-size:12px;color:var(--nk-muted);line-height:1.8;margin:0 0 16px}.cd-note a{font-size:12px}.cd-empty{text-align:center;padding:40px 28px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface)}.cd-empty>span{display:grid;place-items:center;width:52px;height:52px;margin:0 auto 18px;border-radius:16px;background:var(--nk-tint);color:var(--nk-link);font-size:24px;font-weight:800}.cd-empty h2{font-size:23px;line-height:1.4;margin:0 0 12px;font-weight:800}.cd-empty p{font-size:14px;color:var(--nk-muted);margin:0 0 20px}.calculator-directory :focus-visible{outline:3px solid var(--nk-link);outline-offset:3px}
@media(max-width:1000px){.cd-layout{grid-template-columns:minmax(0,1fr) 250px;gap:18px}.cd-tool-list{grid-template-columns:1fr}.cd-tool>a{min-height:0}.cd-aside{top:172px}.cd-main,.cd-group{scroll-margin-top:172px}.cd-catalog-heading{align-items:flex-start;flex-wrap:wrap;gap:12px}.cd-match-info{align-items:flex-start}}
@media(max-width:760px){.cd-layout{grid-template-columns:1fr}.cd-tool-list{grid-template-columns:repeat(2,minmax(0,1fr))}.cd-aside{position:static;display:grid;grid-template-columns:1fr 1fr;gap:18px}.cd-note{margin:0}.cd-quick>strong{flex:0 0 100%;margin:0}}
@media(max-width:480px){.cd-quick{margin:18px 0 24px;gap:8px}.cd-quick a{width:100%;justify-content:space-between;min-height:44px}.cd-group{padding:22px;border-radius:16px;margin-bottom:16px}.cd-tool-list{grid-template-columns:1fr}.cd-group-heading h2{font-size:21px}.cd-tool h3{font-size:17px}.cd-tool p{font-size:13px}.cd-catalog-heading h2{font-size:23px}.cd-aside{grid-template-columns:1fr}.cd-note{padding:22px;border-radius:16px}.cd-main,.cd-group{scroll-margin-top:20px}.cd-empty{padding:30px 22px;border-radius:16px}.cd-empty h2{font-size:21px}}

/* Individual calculators: input, answer and a worked example. */
.nk-body.bg-lighter:has(.calculator-page){background:var(--nk-page)!important}.calculator-page{color:var(--nk-text);line-height:1.65}.cp-header{display:grid;grid-template-columns:minmax(0,1fr) 190px;align-items:center;gap:32px;padding:30px 36px;border:1px solid var(--nk-border);border-radius:22px;background:var(--nk-surface);margin-bottom:24px}.cp-back{display:inline-flex;color:var(--nk-link);font-size:12px;font-weight:700;margin-bottom:14px;text-decoration:none}.cp-header h1{font-size:36px;font-weight:800;letter-spacing:-.025em;line-height:1.2;margin:0 0 14px;color:var(--nk-heading)}.cp-header p{max-width:680px;margin:0;font-size:16px;line-height:1.8}.cp-graphic{display:grid;place-items:center;min-height:150px;color:var(--nk-link);background:var(--nk-tint);border-radius:24px}.cp-graphic svg{width:190px;height:150px}.cp-graphic>span{font-size:28px;font-weight:800;letter-spacing:-.03em}.cp-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:24px;align-items:start}.cp-workspace{padding:30px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-surface);min-width:0}.cp-workspace-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:24px}.cp-workspace h2,.cp-method h2{font-size:23px;font-weight:800;line-height:1.4;margin:0;color:var(--nk-heading)}.cp-example{border:0;background:transparent;color:var(--nk-link);font-size:12px;font-weight:700;padding:7px 0;cursor:pointer}.nk-content-inner .calculator-page .cp-form{padding:0;margin:0;border:0;border-radius:0;background:transparent}.cp-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.cp-field{min-width:0}.cp-field:only-child{grid-column:1/-1;max-width:330px;width:100%}.cp-field label{display:block;margin:0 0 8px;font-size:13px;font-weight:700;color:var(--nk-heading)}.nk-content-inner .cp-form input,.nk-content-inner .cp-form select{display:block;width:100%;min-height:54px;padding:12px 16px;border:1px solid #cde1d9;border-radius:11px;background:var(--nk-surface);font:inherit;font-size:18px;color:var(--nk-heading);box-shadow:none}.cp-form input::placeholder{color:#90a39b}.cp-operation{grid-column:1/-1;max-width:330px}.cp-input-hint{font-size:12px;line-height:1.8;color:var(--nk-muted);margin:16px 0 22px}.cp-actions{display:flex;align-items:center;gap:22px}.nk-content-inner .cp-form .cp-submit{display:inline-flex;align-items:center;justify-content:center;gap:28px;min-height:54px;padding:14px 24px;border:0;border-radius:11px;background:var(--nk-primary);color:#fff;font-size:14px;font-weight:800;cursor:pointer}.nk-content-inner .cp-form .cp-submit:hover{background:var(--nk-primary-hover)}.nk-content-inner .cp-form .cp-submit>span{font-size:22px;line-height:1}.nk-content-inner .cp-form .cp-clear{padding:10px 0;border:0;background:transparent;color:var(--nk-muted);font-size:12px;font-weight:600;cursor:pointer}.cp-result{margin-top:28px;padding:24px;border:1px solid var(--nk-border);border-radius:14px;background:var(--nk-page);overflow-wrap:anywhere}.cp-result-label{display:block;font-size:11px;font-weight:800;letter-spacing:.07em;text-transform:uppercase;color:var(--nk-muted);margin-bottom:10px}.cp-result>strong{display:block;color:var(--nk-heading);font-size:34px;font-weight:800;line-height:1.3;margin-bottom:8px}.cp-result p{font-size:13px;line-height:1.8;margin:0;color:var(--nk-text)}.cp-result.is-ready{background:var(--nk-tint);border-color:#c7e8dc}.cp-result.is-ready>strong{color:var(--nk-link)}.cp-result.is-error{background:#fff4f0;border-color:#efd9cf}.cp-result.is-error>strong{font-size:23px;color:#9b4a32}.cp-result-note{font-size:11px;color:var(--nk-muted);margin:12px 0 0}.cp-guide{min-width:0}.cp-method{padding:26px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-tint)}.cp-formula{font-size:25px;font-weight:800;color:var(--nk-link);line-height:1.5;padding:18px 0 14px;overflow-wrap:anywhere}.cp-method>p{font-size:13px;line-height:1.8;margin:0}.cp-worked{margin-top:22px;padding-top:18px;border-top:1px solid #cde9dd}.cp-worked h3{margin:0 0 8px;font-size:12px;font-weight:800;color:var(--nk-heading)}.cp-worked p{margin:0;font-size:15px;color:var(--nk-heading);line-height:1.8;overflow-wrap:anywhere}.cp-catalog-link{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:18px 4px;color:var(--nk-link);font-size:13px;font-weight:700;text-decoration:none}.cp-catalog-link>span{font-size:22px}.cp-related{margin-top:30px;padding-top:24px;border-top:1px solid var(--nk-border)}.cp-related-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:12px}.cp-related-heading h2{font-size:23px;font-weight:800;margin:0;color:var(--nk-heading)}.cp-related-heading>a{font-size:12px;font-weight:700;color:var(--nk-link);text-decoration:none}.cp-related-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px}.cp-related-list>a{display:flex;align-items:center;justify-content:space-between;gap:16px;min-width:0;padding:17px 0;border-bottom:1px solid var(--nk-border);color:var(--nk-heading);font-size:14px;font-weight:700;text-decoration:none}.cp-related-list>a>span{font-size:22px;color:var(--nk-link);flex-shrink:0}.cp-related-list>a:hover{color:var(--nk-link)}.calculator-page :focus-visible{outline:3px solid var(--nk-link);outline-offset:3px}
@media(max-width:1000px){.cp-layout{grid-template-columns:minmax(0,1fr) 280px;gap:18px}.cp-workspace{padding:24px}.cp-method{padding:24px}.cp-header{padding:28px;grid-template-columns:minmax(0,1fr) 160px}.cp-header h1{font-size:32px}.cp-graphic svg{width:160px}.cp-fields{grid-template-columns:1fr}.cp-field:only-child{max-width:none}}
@media(max-width:760px){.cp-layout{grid-template-columns:1fr}.cp-fields{grid-template-columns:repeat(2,minmax(0,1fr))}.cp-header{grid-template-columns:minmax(0,1fr) 130px;gap:20px}.cp-graphic{min-height:120px}.cp-graphic svg{width:130px;height:120px}.cp-graphic>span{font-size:22px}.cp-header h1{font-size:30px}.cp-header p{font-size:14px}.cp-guide{display:grid;grid-template-columns:1fr}.cp-method{padding:26px}.cp-catalog-link{padding:18px 4px}}
@media(max-width:480px){.cp-header{padding:24px 22px;border-radius:16px;grid-template-columns:1fr;gap:20px;margin-bottom:18px}.cp-header h1{font-size:30px}.cp-graphic{min-height:100px;justify-self:start;width:150px;border-radius:18px}.cp-graphic svg{width:140px;height:110px}.cp-graphic>span{font-size:24px}.cp-workspace{padding:22px;border-radius:16px}.cp-workspace h2,.cp-method h2{font-size:22px}.cp-workspace-heading{gap:8px;margin-bottom:20px}.cp-fields{grid-template-columns:1fr;gap:16px}.cp-operation{max-width:none}.cp-actions{gap:16px}.nk-content-inner .cp-form .cp-submit{flex:1;padding:14px 16px;gap:16px}.cp-result{padding:20px}.cp-result>strong{font-size:29px}.cp-result.is-error>strong{font-size:21px}.cp-method{padding:22px;border-radius:16px}.cp-related-heading h2{font-size:21px}.cp-related-list{grid-template-columns:1fr}.cp-related{margin-top:20px}}
.nk-content-inner .calculator-page .cp-example{border:0;border-radius:0;background:transparent;color:var(--nk-link);font-size:12px;font-weight:700;padding:7px 0;box-shadow:none;cursor:pointer}.nk-content-inner .calculator-page .cp-example:hover{color:var(--nk-primary-hover);background:transparent}
.editorial-page{max-width:1120px;margin:0 auto;padding:8px 0 40px;color:var(--nk-text);line-height:1.7}.editorial-heading{margin:8px 0 28px;padding:30px 34px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-surface)}.editorial-heading h1{margin:8px 0 10px;color:var(--nk-heading);font-size:clamp(30px,4vw,42px);font-weight:800;line-height:1.2;letter-spacing:-.03em}.editorial-heading p{max-width:760px;margin:0;color:var(--nk-muted);font-size:16px}.editorial-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.editorial-grid .home-article h2{margin:0 0 12px;font-size:22px;line-height:1.4;font-weight:800;overflow-wrap:anywhere}.editorial-grid .home-article h2 a{color:var(--nk-heading);text-decoration:none}.editorial-grid .home-article h2 a:hover{color:var(--nk-link)}.editorial-pagination{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0 0;padding:0;list-style:none}.editorial-pagination li{margin:0}.editorial-pagination a,.editorial-pagination span{display:block;padding:8px 12px;border:1px solid var(--nk-border);border-radius:9px;background:var(--nk-surface);color:var(--nk-heading);text-decoration:none}.editorial-pagination .selected span{background:var(--nk-link);border-color:var(--nk-link);color:#fff}.editorial-pagination .hidden{display:none}.editorial-page>.editorial-article{max-width:820px;margin:0 auto;padding:34px 42px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-surface)}.editorial-article h1{margin:0 0 26px;color:var(--nk-heading);font-size:clamp(30px,4vw,42px);font-weight:800;line-height:1.25;letter-spacing:-.03em}.editorial-article-body{color:var(--nk-text);font-size:17px;line-height:1.85;overflow-wrap:anywhere}.editorial-article-body h2,.editorial-article-body h3{margin:1.7em 0 .6em;color:var(--nk-heading);font-weight:800;line-height:1.35}.editorial-article-body h2{font-size:26px}.editorial-article-body h3{font-size:21px}.editorial-article-body p,.editorial-article-body ul,.editorial-article-body ol{margin:0 0 1.1em}.editorial-article-body a{color:var(--nk-link);font-weight:700;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;transition:color .18s ease}.editorial-article-body a:hover{color:var(--nk-heading)}.editorial-article-body img{max-width:100%;height:auto}.editorial-article-body table{width:100%;margin:20px 0;border-collapse:collapse}.editorial-article-body th,.editorial-article-body td{padding:10px 12px;border:1px solid var(--nk-border);text-align:left}.editorial-back{margin:28px 0 0;padding-top:20px;border-top:1px solid var(--nk-border)}.editorial-back a,.editorial-related a{color:var(--nk-link);font-weight:700;text-decoration:none}.editorial-related{max-width:820px;margin:20px auto 0;padding:26px 32px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-surface)}.editorial-related h2{margin:0 0 12px;color:var(--nk-heading);font-size:21px;font-weight:800}.editorial-related ul{display:grid;gap:8px;margin:0 0 16px;padding-left:20px}.editorial-related li{padding-left:4px}.editorial-related li a{color:var(--nk-heading)}@media(max-width:760px){.editorial-page{padding-top:0}.editorial-heading{padding:24px;border-radius:16px}.editorial-grid{grid-template-columns:1fr}.editorial-page>.editorial-article{padding:26px 22px;border-radius:16px}.editorial-article-body{font-size:16px}.editorial-related{padding:22px}}
.nk-content-inner .calculator-page .cp-example:focus{outline:3px solid var(--nk-link);outline-offset:3px}.nk-content-inner .calculator-page .cp-example:focus:not(:focus-visible){outline:none}
@media(max-width:900px){.cp-layout{grid-template-columns:1fr}}
@media(min-width:481px) and (max-width:900px){.cp-fields{grid-template-columns:repeat(2,minmax(0,1fr))}}

/* Articles: an editorial catalog and a comfortable reading column. */
.nk-body.bg-lighter:has(.articles-catalog,.article-page){background:var(--nk-page)!important}.articles-catalog,.article-page{color:var(--nk-text);line-height:1.7}.ar-catalog-hero{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:42px;align-items:center;padding:34px 38px;border:1px solid var(--nk-border);border-radius:22px;background:var(--nk-surface)}.ar-catalog-hero h1{font-size:42px;line-height:1.2;letter-spacing:-.03em;font-weight:800;color:var(--nk-heading);margin:0 0 16px}.ar-catalog-hero p{max-width:700px;margin:0;font-size:16px;line-height:1.8}.ar-book{width:100%;height:auto}.ar-catalog-toolbar{display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap;margin:26px 0 22px}.ar-filters{display:flex;flex-wrap:wrap;gap:8px}.ar-filters a{display:inline-flex;align-items:center;gap:12px;padding:9px 14px;border:1px solid var(--nk-border);border-radius:10px;background:var(--nk-surface);color:var(--nk-text);font-size:13px;font-weight:700;text-decoration:none}.ar-filters a>span{font-size:11px;color:var(--nk-muted)}.ar-filters a[aria-current=page]{background:var(--nk-tint);border-color:#bae5d6;color:var(--nk-link)}.ar-filters a[aria-current=page]>span{color:var(--nk-link)}.ar-filters a:hover{border-color:var(--nk-primary)}.ar-total{font-size:12px;color:var(--nk-muted)}.ar-featured{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(0,1fr);gap:52px;padding:34px 38px;background:var(--nk-tint);border:1px solid #d4ece2;border-radius:20px}.ar-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;color:var(--nk-muted);font-size:12px;line-height:1.5}.ar-meta>span:first-child,.ar-meta>a{color:var(--nk-link);font-weight:700;text-decoration:none}.ar-featured h2{font-size:32px;font-weight:800;line-height:1.3;letter-spacing:-.025em;margin:18px 0 14px}.ar-featured h2>a,.ar-story h3>a{color:var(--nk-heading);text-decoration:none}.ar-featured h2>a:hover,.ar-story h3>a:hover{color:var(--nk-link)}.ar-featured-copy>p{max-width:620px;font-size:15px;line-height:1.8;margin:0 0 22px}.ar-featured-note{align-self:center;padding-left:32px;border-left:1px solid #c4e4d7}.ar-featured-note>span{display:block;font-size:40px;font-weight:800;letter-spacing:-.05em;color:var(--nk-link);margin-bottom:12px}.ar-featured-note>strong{display:block;font-size:16px;font-weight:800;color:var(--nk-heading);line-height:1.6}.ar-featured-note>p{font-size:13px;color:var(--nk-muted);margin:10px 0 0;line-height:1.8}.ar-list-section{margin-top:30px}.ar-section-heading{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;margin-bottom:18px}.ar-section-heading h2{font-size:25px;line-height:1.4;font-weight:800;color:var(--nk-heading);margin:0}.ar-section-heading>span{font-size:12px;color:var(--nk-muted)}.ar-section-heading>a{font-size:13px;font-weight:700;color:var(--nk-link);text-decoration:none}.ar-story-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0 30px;padding:0 28px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:18px}.ar-story{display:flex;flex-direction:column;min-width:0;padding:28px 0}.ar-story h3{font-size:22px;font-weight:800;line-height:1.4;margin:16px 0 12px;letter-spacing:-.015em}.ar-story>p{font-size:13px;color:var(--nk-muted);line-height:1.85;margin:0 0 24px}.ar-story-link{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:auto;color:var(--nk-link);text-decoration:none;font-size:12px;font-weight:800}.ar-story-link>span{font-size:22px}.ar-story:nth-child(n+4){border-top:1px solid var(--nk-border)}.ar-practice{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:38px;margin-top:30px;padding:26px 0;border-top:1px solid var(--nk-border)}.ar-practice h2{font-size:24px;color:var(--nk-heading);font-weight:800;line-height:1.4;margin:0 0 10px}.ar-practice p{font-size:14px;color:var(--nk-muted);margin:0}.ar-practice nav>a{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:9px 0;color:var(--nk-link);font-size:13px;font-weight:700;text-decoration:none}.ar-practice nav>a>span{font-size:22px}.ar-empty{padding:32px;background:var(--nk-surface);border:1px solid var(--nk-border);border-radius:18px}.ar-empty h2{font-size:25px;color:var(--nk-heading)}.ar-pagination{display:flex;flex-wrap:wrap;gap:8px;list-style:none;padding:0;margin:26px 0 0}.ar-pagination a{display:block;padding:8px 14px;border:1px solid var(--nk-border);border-radius:9px;background:var(--nk-surface);color:var(--nk-heading);text-decoration:none}.ar-pagination .selected a{background:var(--nk-link);color:#fff;border-color:var(--nk-link)}.ar-pagination .hidden{display:none}
.ar-article-header{padding:32px 40px;border:1px solid var(--nk-border);border-radius:22px;background:var(--nk-surface);margin-bottom:24px}.ar-back{display:inline-flex;margin-bottom:18px;color:var(--nk-link);font-size:12px;font-weight:700;text-decoration:none}.ar-article-header h1{max-width:850px;font-size:42px;font-weight:800;letter-spacing:-.03em;line-height:1.2;margin:0 0 18px;color:var(--nk-heading)}.ar-lead{max-width:760px;font-size:17px;line-height:1.8;margin:0 0 22px}.ar-reading-layout{display:grid;grid-template-columns:minmax(0,1fr) 270px;gap:24px;grid-template-areas:'paper aside';align-items:start}.ar-reading-paper{grid-area:paper;min-width:0;padding:12px 40px 30px;border:1px solid var(--nk-border);border-radius:20px;background:var(--nk-surface)}.ar-reading-aside{grid-area:aside;position:sticky;top:100px;min-width:0}.ar-toc{padding:22px 24px;border:1px solid var(--nk-border);border-radius:18px;background:var(--nk-tint)}.ar-toc summary{font-size:18px;font-weight:800;color:var(--nk-heading);cursor:pointer;line-height:1.5}.ar-toc ol{padding:0 0 0 20px;margin:18px 0 0;color:var(--nk-link);font-size:12px}.ar-toc li{padding-left:4px;margin:0 0 12px}.ar-toc li:last-child{margin:0}.ar-toc a{color:var(--nk-text);text-decoration:none;line-height:1.7}.ar-toc a:hover{color:var(--nk-link)}.ar-reading-tip{margin:18px 8px 0;font-size:12px;color:var(--nk-muted);line-height:1.8}.ar-prose{font-size:17px;line-height:1.9;overflow-wrap:anywhere}.ar-prose>h2{font-size:26px;font-weight:800;color:var(--nk-heading);line-height:1.35;margin:30px 0 16px;letter-spacing:-.015em;scroll-margin-top:100px}.ar-prose h3{font-size:21px;font-weight:800;color:var(--nk-heading);line-height:1.4;margin:24px 0 14px}.ar-prose p{margin:0 0 18px}.ar-prose ul,.ar-prose ol{padding-left:24px;margin:0 0 22px}.ar-prose li{padding-left:5px;margin-bottom:10px}.ar-prose a{color:var(--nk-link);text-underline-offset:4px}.ar-prose strong{color:var(--nk-heading)}.ar-prose img{display:block;max-width:100%;height:auto;border-radius:12px;margin:24px 0}.ar-prose figure{margin:24px 0}.ar-prose figcaption{font-size:12px;color:var(--nk-muted);margin-top:10px}.ar-prose blockquote,.ar-prose .article-callout{margin:24px 0;padding:20px 24px;border-left:3px solid var(--nk-primary);border-radius:0 12px 12px 0;background:var(--nk-tint);font-size:15px;line-height:1.8}.ar-prose .article-callout>strong{display:block;margin-bottom:8px;font-size:14px}.ar-prose .article-callout p:last-child,.ar-prose blockquote p:last-child{margin-bottom:0}.ar-prose .article-example{padding:20px 24px;margin:24px 0;border:1px solid var(--nk-border);border-radius:12px;background:var(--nk-page);color:var(--nk-heading)}.ar-prose .article-example p:first-child{font-size:20px;font-weight:800;color:var(--nk-link)}.ar-prose .article-example p:last-child{margin-bottom:0;font-size:15px}.ar-prose .article-answer{padding:16px 20px;margin:20px 0;border:1px solid var(--nk-border);border-radius:12px}.ar-prose .article-answer summary{color:var(--nk-link);font-size:14px;font-weight:700;cursor:pointer}.ar-prose .article-answer p{font-size:15px;margin:14px 0 0}.ar-table-scroll{overflow-x:auto;margin:24px 0}.ar-prose table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.6}.ar-prose th,.ar-prose td{padding:12px 16px;border:1px solid var(--nk-border);text-align:left;vertical-align:top}.ar-prose th{background:var(--nk-tint);color:var(--nk-heading)}.ar-prose pre{overflow:auto;padding:18px;background:var(--nk-page);border-radius:12px}.ar-reading-footer{display:flex;flex-direction:column;gap:8px;margin-top:30px;padding-top:22px;border-top:1px solid var(--nk-border);font-size:12px;color:var(--nk-muted)}.ar-reading-footer>a{font-size:13px;font-weight:800;text-decoration:none;color:var(--nk-link)}.ar-related{margin-top:30px}.ar-related-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}.ar-related-list>a{display:flex;align-items:center;justify-content:space-between;gap:20px;min-width:0;padding:18px 0;border-top:1px solid var(--nk-border);text-decoration:none}.ar-related-list span{display:block;font-size:11px;color:var(--nk-muted);margin-bottom:7px}.ar-related-list strong{display:block;font-size:16px;font-weight:700;color:var(--nk-heading);line-height:1.5}.ar-related-list b{color:var(--nk-link);font-size:22px;flex-shrink:0}.ar-related-list>a:hover strong{color:var(--nk-link)}.articles-catalog :focus-visible,.article-page :focus-visible{outline:3px solid var(--nk-link);outline-offset:3px}
@media(max-width:1000px){.ar-catalog-hero{grid-template-columns:minmax(0,1fr) 170px;gap:30px;padding:30px}.ar-catalog-hero h1,.ar-article-header h1{font-size:36px}.ar-story-list{grid-template-columns:repeat(2,minmax(0,1fr))}.ar-story:nth-child(n+3){border-top:1px solid var(--nk-border)}.ar-reading-layout{grid-template-columns:minmax(0,1fr) 240px;gap:18px}.ar-reading-paper{padding:8px 28px 28px}.ar-reading-aside{top:172px}.ar-prose>h2{scroll-margin-top:172px}.ar-featured{gap:32px;padding:30px}.ar-featured h2{font-size:29px}}
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