/* iStandart 2.4: progressive, full-width product navigation. */
.istn-registry{--istn-primary:#082b4c;--istn-text:#082b4c;--istn-muted:#526b7a;--istn-line:#cce3eb;--istn-soft:#f3fafc;width:100%;max-width:none;min-width:0;height:auto;max-height:none;overflow:visible;padding:24px 0;margin:0;color:var(--istn-text);background:transparent;font:15px/1.5 'Golos Text',system-ui,-apple-system,'Segoe UI',sans-serif}
.istn-registry,.istn-registry *{box-sizing:border-box}.istn-registry [hidden]{display:none!important}.istn-registry button,.istn-registry input{font:inherit}.istn-registry a{color:inherit}.istn-registry :is(a,button,input,summary):focus-visible{outline:0;box-shadow:inset 0 0 0 3px #e40046}.istn-registry :is(button,a){-webkit-tap-highlight-color:transparent}.istn-registry :is(h1,h2,h3,h4,p){margin-top:0}.istn-registry :is(h1,h2,h3,h4){color:#082b4c;text-transform:none;letter-spacing:-.025em}.istn-registry h1,.istn-registry .istn-intro h2{margin:0;font-size:clamp(25px,2.8vw,36px);line-height:1.18}.istn-registry p{line-height:1.55}
.istn-shell{width:min(1600px,100%);max-width:none;min-width:0;margin:auto;padding:0 24px}.istn-standalone{margin:0;background:#f5fafc}.istn-intro{margin-bottom:20px}.istn-lead{max-width:920px;margin:10px 0 0;color:var(--istn-muted);font-size:16px}
.istn-eyebrow,.istn-section-label,.istn-mini-label{display:block;color:#087b94;font-size:11px;font-weight:800;line-height:1.5;letter-spacing:.11em;text-transform:uppercase}.istn-eyebrow{margin-bottom:8px}
.istn-search-panel{margin:0 0 22px;padding:20px;border:1px solid var(--istn-line);border-radius:20px;background:linear-gradient(120deg,#eff9fc,#fff 75%)}.istn-search-label{display:block;margin:0 0 8px;font-size:18px;font-weight:750}.istn-search-help{color:var(--istn-muted);font-size:13px;margin:0 0 12px}.istn-form{display:flex;align-items:stretch;gap:10px;margin:0}.istn-form input{min-width:0;flex:1;width:auto;min-height:56px;padding:14px 18px;border:1px solid #bad9e5;border-radius:12px;color:#082b4c;background:#fff;box-shadow:0 3px 8px #082b4c03}.istn-form input::placeholder{color:#5d7382;opacity:1}.istn-form button{min-height:56px;padding:12px 26px;border:1px solid #082b4c;border-radius:12px;background:#082b4c;color:#fff;font-weight:750;cursor:pointer}.istn-form button:hover{background:#075570}.istn-reset{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:10px 16px;border:1px solid var(--istn-line);border-radius:12px;background:#fff;font-weight:650;text-decoration:none}.istn-search-examples{display:flex;align-items:center;flex-wrap:wrap;gap:6px;margin-top:10px;color:var(--istn-muted);font-size:12px}.istn-search-examples button{min-height:36px;padding:5px 12px;color:#08768d;border:0;border-radius:8px;background:#e7f6fa;cursor:pointer}.istn-search-examples button:hover{background:#d2eef6}.istn-assistant-cta{display:inline-block;margin-top:12px;font-size:13px;text-underline-offset:3px}
.istn-workspace{display:block;width:100%;min-width:0;max-height:none;overflow:visible}.istn-browser{padding:clamp(18px,2.4vw,30px);border:1px solid var(--istn-line);border-radius:22px;background:#fff;box-shadow:0 14px 42px #082b4c06}.istn-breadcrumbs{display:flex;align-items:center;flex-wrap:wrap;gap:5px 8px;margin:0 0 18px;padding:0;list-style:none;font-size:13px}.istn-breadcrumbs li{display:inline-flex;gap:8px;align-items:center;min-width:0}.istn-breadcrumbs :is(a,button){display:inline-flex;align-items:center;min-height:38px;max-width:100%;padding:5px 10px;border:1px solid transparent;border-radius:8px;background:#f0f8fb;color:#126780;font-size:13px;text-decoration:none;cursor:pointer}.istn-breadcrumbs a:hover{border-color:#91c8da;background:#e5f4f8}.istn-breadcrumbs [aria-current]{color:#082b4c;font-weight:750}
.istn-browser-heading{display:flex;justify-content:space-between;gap:18px;align-items:flex-start;margin-bottom:18px}.istn-browser-heading>div{min-width:0}.istn-browser-heading h2{margin:4px 0 8px;font-size:clamp(23px,2.25vw,31px);line-height:1.25}.istn-browser-heading p{max-width:950px;margin:0;color:var(--istn-muted);font-size:14px}.istn-browser-heading>a,.istn-browser-actions :is(a,button){display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:9px 14px;border:1px solid #bad8e4;border-radius:11px;background:#fff;color:#082b4c;font-size:13px;font-weight:700;text-decoration:none;cursor:pointer}.istn-browser-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:16px 0 0}
.istn-category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none}.istn-category-card{position:relative;display:flex;flex-direction:column;align-items:flex-start;min-width:0;min-height:132px;padding:19px 48px 19px 19px;border:1px solid #cbe3ec;border-radius:16px;color:#082b4c;background:linear-gradient(135deg,#fff,#f5fbfd);text-align:left;text-decoration:none;cursor:pointer;transition:border-color .18s,transform .18s,box-shadow .18s}.istn-category-card:hover{border-color:#158aa5;transform:translateY(-2px);box-shadow:0 10px 25px #082b4c0b}.istn-category-card:active{transform:translateY(0)}.istn-category-card.is-current,.istn-category-card[aria-current]{border-color:#e40046;background:linear-gradient(130deg,#fff,#fff4f8)}.istn-card-code{display:inline-flex;align-items:center;gap:4px;min-height:24px;margin-bottom:9px;color:#08788e;font-size:11px;font-weight:800;letter-spacing:.04em;line-height:1.3}.istn-card-title{display:block;max-width:100%;margin:0;font-size:16px;font-weight:750;line-height:1.35;overflow-wrap:anywhere}.istn-card-description{display:block;margin-top:7px;color:var(--istn-muted);font-size:12px;line-height:1.5;overflow-wrap:anywhere}.istn-card-arrow{position:absolute;top:18px;right:14px;display:grid;place-items:center;width:27px;height:27px;border:1px solid #c6e3ed;border-radius:50%;color:#0a7890;background:#fff;font-size:19px;line-height:1;transition:transform .18s}.istn-category-card:hover .istn-card-arrow{transform:translateX(2px)}
.istn-browser-note{padding:12px 15px;border-radius:12px;background:#edf8fb;color:var(--istn-muted);font-size:13px}.istn-browser-status,.istn-tree-status{margin:10px 0 0;color:var(--istn-muted);font-size:13px}.istn-browser-status:empty,.istn-tree-status:empty{display:none}.istn-browser[aria-busy=true],.istn-result-pane[aria-busy=true]{opacity:.65}.istn-browser,.istn-result-pane{transition:opacity .15s}
.istn-result-pane{min-width:0;width:100%;margin-top:26px;scroll-margin-top:100px}.istn-results-toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:0 2px 15px;border-bottom:1px solid var(--istn-line);margin-bottom:14px}.istn-selection{display:block;margin-top:4px;color:#082b4c;font-size:22px;font-weight:750;line-height:1.3}.istn-total{flex:none;display:inline-flex;padding:7px 12px;border:1px solid #d7eaf0;border-radius:30px;color:#126d83;background:#f1f9fc;font-size:12px;font-weight:700}.istn-head{display:none}.istn-list{display:grid;gap:14px;min-width:0}.istn-row{display:grid;grid-template-columns:minmax(180px,.7fr) minmax(0,1.7fr);gap:16px 28px;min-width:0;margin:0;padding:clamp(18px,2.2vw,28px);border:1px solid #cfe3eb;border-radius:19px;background:#fff;box-shadow:0 8px 25px #082b4c04}.istn-product{grid-column:1;grid-row:1;min-width:0}.istn-product-title{display:block;font-size:17px;font-weight:720;line-height:1.45;overflow-wrap:anywhere}.istn-code{grid-column:1;grid-row:2;align-self:start;display:flex;flex-wrap:wrap;gap:6px;min-width:0}.istn-code-chip{display:inline-flex;flex-direction:column;gap:2px;padding:6px 9px;border:1px solid #c7e1eb;border-radius:9px;background:#edf8fc;font-family:inherit;text-decoration:none}.istn-code-chip strong,.istn-code-value{font:650 12px/1.4 ui-monospace,SFMono-Regular,Consolas,monospace}.istn-code-chip small,.istn-code-level{font-size:10px;line-height:1.4;color:#46687c}.istn-code-original{width:100%;font-size:11px;color:var(--istn-muted);overflow-wrap:anywhere}.istn-document{grid-column:2;grid-row:1/span 2;display:flex;flex-direction:column;align-items:flex-start;min-width:0;padding-left:26px;border-left:1px solid #deedf2}.istn-document-title{color:#08788d;margin:0 0 9px;font-size:12px;font-weight:700;line-height:1.4}.istn-document-name,.istn-source-name{display:block;font-size:16px;font-weight:650;line-height:1.55;overflow-wrap:anywhere}.istn-source-link{display:block;max-width:100%;color:#082b4c;text-decoration:none}.istn-source-link:hover .istn-source-name{color:#007c96;text-decoration:underline;text-underline-offset:3px}.istn-source-meta{display:inline-flex;align-items:center;min-height:40px;gap:7px;margin-top:12px;padding:7px 12px;border:1px solid #afd5e2;border-radius:10px;color:#0a6680;background:#f3fbfd;font-size:12px;font-weight:700}.istn-no-link{display:block;font-size:14px;line-height:1.5;color:var(--istn-muted)}
.istn-badge{display:inline-block;margin-top:9px;padding:4px 8px;border:1px solid #b8dbe7;border-radius:7px;color:#1b667b;background:#edf8fc;font-size:11px}.istn-badge--future,.istn-badge--limited{color:#825507;border-color:#ead6a7;background:#fff8e8}.istn-badge--experiment{color:#8c325f;background:#fff1f7;border-color:#efc8d7}.istn-review-note{display:block;margin:4px 0 0;color:var(--istn-muted);font-size:12px;line-height:1.5}.istn-product .istn-mini-label{margin-top:10px}.istn-disclaimer{margin-top:20px;padding:14px 17px;border:1px solid #d5e6ed;border-radius:13px;background:#f6fafc;color:var(--istn-muted);font-size:13px}.istn-disclaimer summary{min-height:32px;color:#2c6075;cursor:pointer;font-weight:700}.istn-disclaimer p{margin:9px 0 0}.istn-code-hierarchy{font-size:12px}
.istn-pagination-wrap{margin-top:20px}.istn-pagination{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:7px}.istn-pagination :is(a,span){display:inline-flex;align-items:center;justify-content:center;min-width:43px;min-height:44px;padding:8px 12px;border:1px solid var(--istn-line);border-radius:10px;background:#fff;text-decoration:none;font-size:14px}.istn-pagination .current,.istn-pagination [aria-current]{background:#082b4c;color:#fff;border-color:#082b4c}.istn-page-status{text-align:center;color:var(--istn-muted);font-size:12px;margin:10px 0}.istn-empty{padding:28px;border:1px dashed #b8d7e3;border-radius:16px;background:#f7fbfd;color:#345c70}.istn-empty strong{display:block;margin-bottom:6px;font-size:19px}.istn-empty p{margin:0;font-size:14px}.istn-notice,.istn-ajax-error{padding:16px;border:1px solid #eebdcc;border-radius:12px;color:#8b2142;background:#fff5f8}.istn-ajax-error button{min-height:44px;padding:8px 15px;margin-left:12px;border:1px solid #c79aa9;border-radius:9px;background:#fff;cursor:pointer}.istn-registry .screen-reader-text{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
/* Exactly one scroll surface and one title inside the Home wrapper. */
.istn-browser-note{grid-column:1/-1}.istn-browser-heading-code{white-space:nowrap}.istn-code-value{white-space:pre-wrap;overflow-wrap:anywhere}.istn-result-pane .istn-ajax-error{opacity:1}
.istn-disclaimer{margin:0 0 18px}.istn-browser-heading-code{flex:none;padding:7px 12px;border-radius:10px;background:#eaf6fa;color:#086f88;font:700 13px/1.4 ui-monospace,Consolas,monospace}.istn-code{flex-direction:column;overflow-wrap:anywhere}.istn-code-chips{display:flex;flex-wrap:wrap;gap:6px}.istn-registry[aria-busy=true] .istn-workspace{opacity:.65}.istn-ajax-error{position:relative;z-index:1}.istn-browser,.istn-result-pane{scroll-margin-top:110px}.istn-registry .istn-product-title{margin:0}.istn-result-pane:focus,.istn-browser:focus{outline:none}.istn-code-more{max-width:100%;overflow-wrap:anywhere}
#document:has(.istn-browser) #registry-tnved-panel>.registry-panel-head{display:none}#document:has(.istn-browser) #registry-tnved-panel .registry-live-slot{margin-top:0}#document:has(.istn-browser) .istn-registry{height:auto!important;max-height:none!important;overflow:visible!important;padding-block:0}#document:has(.istn-browser) .registry-heading{margin-bottom:18px}#document:has(.istn-browser) .registry-heading h2{font-size:clamp(28px,3vw,39px)}#document:has(.istn-browser) .registry-choice{min-height:92px}#document:has(.istn-browser) .registry-panel{padding-top:20px}
@media(min-width:1550px){.istn-category-grid{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media(max-width:1050px){.istn-category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.istn-row{grid-template-columns:minmax(170px,.7fr) minmax(0,1.3fr);gap:16px}.istn-document{padding-left:18px}}
@media(max-width:680px){.istn-registry{padding:16px 0;font-size:14px}.istn-shell{padding-inline:14px}.istn-intro{margin-bottom:15px}.istn-intro :is(h1,h2){font-size:25px}.istn-lead{font-size:14px}.istn-search-panel{padding:14px;border-radius:16px;margin-bottom:15px}.istn-search-label{font-size:17px}.istn-form{flex-wrap:wrap;gap:8px}.istn-form input{flex-basis:100%;min-height:52px;font-size:16px}.istn-form button{flex:1;min-height:46px}.istn-reset{min-height:46px}.istn-search-examples button{min-height:40px}.istn-category-grid{grid-template-columns:minmax(0,1fr);gap:9px}.istn-browser{padding:14px;border-radius:17px}.istn-browser-heading{display:block;margin-bottom:14px}.istn-browser-heading h2{font-size:23px}.istn-browser-heading>a{margin-top:12px}.istn-breadcrumbs{gap:3px;margin-bottom:14px}.istn-breadcrumbs a{min-height:44px;font-size:12px}.istn-category-card{min-height:97px;padding:15px 43px 15px 14px;border-radius:13px}.istn-card-code{margin-bottom:5px;font-size:10px}.istn-card-title{font-size:15px}.istn-card-description{font-size:12px}.istn-results-toolbar{align-items:flex-start;gap:9px}.istn-selection{font-size:20px}.istn-total{padding:6px 8px;font-size:10px}.istn-row{display:flex;flex-direction:column;gap:12px;padding:16px;border-radius:15px}.istn-product{order:0}.istn-code{order:1}.istn-document{order:2;padding:14px 0 0;border:0;border-top:1px solid #dcebf0}.istn-source-name,.istn-document-name{font-size:14px;line-height:1.5}.istn-product-title{font-size:16px}.istn-source-meta{min-height:44px}.istn-empty{padding:19px}#document:has(.istn-browser) .registry-wide{width:calc(100% - 20px)}#document:has(.istn-browser) .registry-workspace{padding:12px;border-radius:18px}#document:has(.istn-browser) .registry-heading .intro{display:none}#document:has(.istn-browser) .registry-choice{min-height:84px;padding:12px}#document:has(.istn-browser) .registry-choice strong{font-size:15px}#document:has(.istn-browser) .registry-choice small{font-size:11px}}
/* 2.5 — named categories, visible return path and restrained orbital depth. */
.istn-browser{padding:0;border:0;border-radius:0;background:transparent;box-shadow:none}
#document .istn-registry .istn-shell{padding-inline:0}
.istn-browser-topbar{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin:0 0 16px}
.istn-back{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:10px 17px;border:1px solid #b6d8e5;border-radius:24px;background:#fff;color:#082b4c;font-weight:750;font-size:13px;text-decoration:none;box-shadow:inset 0 1px 0 #fff,0 4px 11px #082b4c0a}
.istn-browser-step{font-size:13px;color:#526b7a}
.istn-breadcrumbs{gap:6px;margin-bottom:24px}.istn-breadcrumbs a{display:flex;flex-direction:column;align-items:flex-start;justify-content:center;gap:2px;min-height:46px;max-width:220px;padding:7px 11px;border-radius:12px}
.istn-crumb-name{display:block;width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:11px;font-weight:500;color:#526b7a}
.istn-browser-heading{margin-bottom:22px}.istn-browser-heading h2{max-width:1120px;font-size:clamp(23px,2.1vw,32px)}
.istn-category-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.istn-category-card{isolation:isolate;overflow:hidden;min-height:180px;padding:22px 22px 65px;border-color:#c3e0eb;border-radius:24px;background:linear-gradient(140deg,#fff 45%,#f2fafc);box-shadow:inset 0 1px 0 #fff,0 7px 18px #082b4c07;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.istn-category-card::before{content:"";position:absolute;z-index:-1;pointer-events:none;width:166px;height:166px;border:1px solid #bfe4ee;border-radius:50%;right:-46px;bottom:-91px;box-shadow:0 0 0 25px #dbf0f536}
.istn-card-code{padding:5px 10px;margin-bottom:13px;border-radius:16px;background:#eaf6fa;color:#07778f;font-size:12px;font-weight:750;letter-spacing:.025em}
.istn-card-title{font-size:17px;line-height:1.45;font-weight:720;display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden}
.istn-card-title.has-context{display:block;-webkit-line-clamp:unset;overflow:visible}
.istn-card-name{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.istn-card-context{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden;margin-top:9px;color:#526b7a;font-size:13px;font-weight:450;line-height:1.5}
.istn-full-title{margin:8px 0 14px;font-size:13px;color:#476776}.istn-full-title summary{min-height:36px;cursor:pointer;font-weight:650;color:#087b94}.istn-full-title p{margin-top:8px;max-width:1120px}
.istn-card-description{position:absolute;left:22px;right:74px;bottom:22px;margin:0;color:#476776;font-size:12px}
.istn-card-arrow{top:auto;right:18px;bottom:16px;width:38px;height:38px;border:1px solid #082b4c;border-radius:50%;background:#082b4c;color:#fff;font-size:24px;box-shadow:0 5px 10px #082b4c15}
.istn-browser-actions{margin-top:18px}.istn-browser-actions :is(a,button){border-radius:23px;box-shadow:0 4px 10px #082b4c06}
.istn-label-source{margin:22px 0 0;padding:14px 0 0;border-top:1px solid #d4e8ef;color:#526b7a;font-size:12px}.istn-label-source summary{display:list-item;min-height:36px;cursor:pointer;font-weight:650;color:#19667d}.istn-label-source p{max-width:1000px;margin:8px 0}.istn-label-source a{display:inline-flex;align-items:center;min-height:36px;text-underline-offset:3px}
.istn-result-pane{margin-top:34px}.istn-row{border:1px solid #d0e5ec;border-radius:24px;box-shadow:0 7px 22px #082b4c06;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr)}
.istn-document{padding:20px;border:0;border-radius:17px;background:linear-gradient(120deg,#f0f9fc,#fafcfd)}
.istn-code-value{font-size:14px}.istn-code-level{font-size:11px}.istn-source-meta{border-radius:22px;background:#fff;box-shadow:0 3px 8px #082b4c07}
.istn-registry :is(.istn-form button,.istn-reset,.istn-back,.istn-browser-actions a,.istn-browser-actions button,.istn-page-button){transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.istn-form button{border-radius:16px;box-shadow:inset 0 1px 0 #ffffff33,0 5px 12px #082b4c1c}
@media(hover:hover) and (pointer:fine){.istn-category-card:hover{transform:translateY(-3px);border-color:#58b5cb;box-shadow:0 14px 30px #082b4c12}.istn-category-card:hover .istn-card-arrow{transform:translateX(2px);background:#e40046;border-color:#e40046}.istn-registry :is(.istn-back,.istn-browser-actions a,.istn-browser-actions button,.istn-form button,.istn-page-button):hover{transform:translateY(-2px);box-shadow:0 6px 13px #082b4c13}}
.istn-category-card:active,.istn-registry :is(.istn-back,.istn-browser-actions a,.istn-browser-actions button,.istn-form button,.istn-page-button):active{transform:translateY(1px);box-shadow:inset 0 2px 5px #082b4c12}
@media(hover:none){.istn-category-card:hover,.istn-category-card:hover .istn-card-arrow{transform:none}}
@media(max-width:1050px){.istn-category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.istn-breadcrumbs a{max-width:180px}}
@media(max-width:680px){.istn-browser{padding:0;border-radius:0}.istn-browser-topbar{gap:9px;margin-bottom:10px}.istn-browser-step{font-size:12px}.istn-back{min-height:44px;padding:9px 14px}.istn-breadcrumbs{flex-wrap:nowrap;overflow-x:auto;overscroll-behavior-inline:contain;max-width:100%;padding-bottom:6px;margin-bottom:15px}.istn-breadcrumbs a{flex:none;max-width:140px;min-height:46px;font-size:11px}.istn-crumb-name{font-size:10px}.istn-browser-heading-code{display:inline-flex;margin-top:10px;font-size:12px}.istn-category-grid{grid-template-columns:minmax(0,1fr);gap:12px}.istn-category-card{min-height:153px;padding:18px 18px 62px;border-radius:21px}.istn-card-title{font-size:16px}.istn-card-code{font-size:11px;margin-bottom:10px}.istn-card-description{left:18px;bottom:22px;right:65px}.istn-card-arrow{right:15px;bottom:15px;width:36px;height:36px}.istn-row{border-radius:21px;padding:17px}.istn-document{padding:15px;width:100%;border:0;border-radius:14px}.istn-browser-heading{margin-bottom:16px}.istn-result-pane{margin-top:25px}}
@media(prefers-reduced-motion:reduce){.istn-registry *,.istn-registry *::before,.istn-registry *::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}.istn-registry :is(a,button):hover,.istn-registry :is(a,button):active{transform:none!important}}