:root{--bg:#080b0c;--panel:#0d1314;--panel2:#121a1b;--ink:#e8edea;--muted:#8e9994;--muted2:#68746f;--line:rgba(150,175,170,.18);--line2:rgba(150,175,170,.32);--amber:#e0a13b;--cyan:#5fd0c2;--mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;--sans:"Helvetica Neue",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;--header:76px;--sidebar:310px}
*{box-sizing:border-box;margin:0;padding:0}html{color-scheme:dark}body{min-width:320px;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{color:inherit}.site-header{position:fixed;inset:0 0 auto;z-index:100;height:var(--header);background:rgba(8,11,12,.96);border-bottom:1px solid var(--line2);backdrop-filter:blur(14px)}.header-inner{height:100%;max-width:1540px;margin:auto;padding:0 28px;display:flex;align-items:center;gap:26px}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--muted2);font:11px var(--mono)}.brand img{display:block;width:auto;object-fit:contain}.brand .stt-logo{height:24px}.brand .vohann-logo{height:26px}.site-nav{display:flex;gap:26px;margin-left:auto;font:9.5px var(--mono);letter-spacing:.14em;text-transform:uppercase}.site-nav a{padding:9px 0;color:var(--muted);text-decoration:none;border-bottom:1px solid transparent}.site-nav a:hover,.site-nav a[aria-current=page]{color:var(--amber);border-color:var(--amber)}.header-cta{padding:10px 13px;border:1px solid var(--line2);color:var(--ink);text-decoration:none;font:700 9px var(--mono);letter-spacing:.12em;text-transform:uppercase}.header-cta:hover{border-color:var(--amber);color:var(--amber)}
.catalog-app{min-height:100vh;padding-top:var(--header);display:grid;grid-template-columns:var(--sidebar) minmax(0,1fr)}.catalog-sidebar{position:fixed;z-index:80;left:0;top:var(--header);bottom:0;width:var(--sidebar);display:flex;flex-direction:column;background:#090d0e;border-right:1px solid var(--line2)}.sidebar-head{min-height:102px;padding:23px 22px 18px;display:flex;justify-content:space-between;gap:16px;border-bottom:1px solid var(--line)}.kicker{display:block;color:var(--amber);font:700 9px var(--mono);letter-spacing:.2em;text-transform:uppercase}.sidebar-head strong{display:block;margin-top:9px;font-size:15px;line-height:1.2}.sidebar-close{display:none}.sidebar-tabs{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}.sidebar-tabs button{height:42px;border:0;border-right:1px solid var(--line);background:transparent;color:var(--muted2);font:700 9px var(--mono);letter-spacing:.15em;text-transform:uppercase;cursor:pointer}.sidebar-tabs button:last-child{border-right:0}.sidebar-tabs button[aria-selected=true]{background:rgba(224,161,59,.08);color:var(--amber);box-shadow:inset 0 -1px var(--amber)}.sidebar-panel{display:none;min-height:0;flex:1;overflow:auto;overscroll-behavior:contain}.sidebar-panel.is-active{display:block}.contents-list{padding:13px 10px 24px}.contents-list button{position:relative;width:100%;padding:12px 38px 12px 13px;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--muted);text-align:left;line-height:1.35;cursor:pointer}.contents-list button:hover,.contents-list button.is-active{background:rgba(95,208,194,.06);color:var(--ink)}.contents-list button.is-active:before{content:"";position:absolute;left:0;top:10px;bottom:10px;width:2px;background:var(--amber)}.contents-list button b{display:block;font-size:11.5px;font-weight:600}.contents-list button span{position:absolute;right:11px;top:13px;color:var(--muted2);font:9px var(--mono)}.contents-list button.chapter{margin-top:9px;padding-top:17px;color:var(--cyan);font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase}.thumb-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;padding:14px}.thumb{position:relative;border:1px solid var(--line);background:#101617;padding:7px;cursor:pointer}.thumb img{display:block;width:100%;height:auto;background:#fff;filter:saturate(.82);transition:.18s}.thumb span{position:absolute;right:6px;bottom:6px;min-width:24px;padding:3px 5px;background:rgba(5,8,9,.86);color:#fff;text-align:center;font:8px var(--mono)}.thumb:hover,.thumb.is-active{border-color:var(--amber)}.thumb.is-active{box-shadow:0 0 0 1px var(--amber)}.sidebar-foot{padding:14px;border-top:1px solid var(--line)}.sidebar-foot a{display:flex;justify-content:space-between;padding:12px 13px;border:1px solid var(--line2);color:var(--ink);text-decoration:none;font:700 9px var(--mono);letter-spacing:.1em;text-transform:uppercase}.sidebar-foot a span{color:var(--muted2)}.sidebar-foot a:hover{border-color:var(--amber);color:var(--amber)}.sidebar-scrim{display:none}
.catalog-workspace{grid-column:2;padding:44px 34px 70px;min-width:0;background-image:linear-gradient(rgba(150,175,170,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(150,175,170,.028) 1px,transparent 1px);background-size:64px 64px}.catalog-intro{max-width:1180px;margin:0 auto 28px;display:grid;grid-template-columns:1.15fr .85fr;gap:54px;align-items:end}.catalog-intro h1{margin-top:14px;font-size:clamp(30px,3.4vw,52px);line-height:1.01;letter-spacing:-.025em;text-transform:uppercase}.catalog-intro p{padding-left:24px;border-left:1px solid var(--line2);color:var(--muted);font-size:13px;line-height:1.7}.viewer-shell{max-width:1180px;margin:auto;border:1px solid var(--line2);background:#070a0b;box-shadow:0 26px 80px rgba(0,0,0,.28)}.viewer-toolbar{height:58px;padding:0 12px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid var(--line2);background:#0b1011}.toolbar-group{display:flex;align-items:center;gap:7px}.tool-button,.icon-button{height:34px;border:1px solid var(--line);background:#101718;color:var(--muted);cursor:pointer}.tool-button{padding:0 11px;display:inline-flex;align-items:center;gap:7px;font:700 8.5px var(--mono);letter-spacing:.1em;text-transform:uppercase}.icon-button{width:34px;font:18px var(--mono)}.tool-button:hover,.icon-button:hover{border-color:var(--amber);color:var(--amber)}.tool-button:disabled,.icon-button:disabled{opacity:.28;cursor:not-allowed;border-color:var(--line);color:var(--muted)}.tool-icon{font-size:14px;line-height:1}.mobile-contents{display:none}.page-field{height:34px;padding:0 9px;display:flex;align-items:center;gap:6px;border:1px solid var(--line);color:var(--muted2);font:8px var(--mono);letter-spacing:.08em;text-transform:uppercase}.page-field input{width:35px;border:0;border-bottom:1px solid var(--line2);outline:none;background:transparent;color:var(--ink);text-align:center;font:11px var(--mono);appearance:textfield}.page-field input::-webkit-inner-spin-button{display:none}.zoom-value{width:43px;text-align:center;color:var(--muted);font:9px var(--mono)}.viewer-stage{position:relative;height:min(72vh,840px);min-height:580px;padding:30px;overflow:auto;overscroll-behavior:contain;display:flex;align-items:flex-start;justify-content:center;background:radial-gradient(720px 360px at 50% 0,rgba(95,208,194,.07),transparent 70%),#111718;scrollbar-color:#3f4a47 #090d0e}.page-sheet{position:relative;z-index:1;width:min(100%,840px);flex:none;background:#fff;box-shadow:0 20px 60px rgba(0,0,0,.42);transition:width .18s ease,opacity .18s ease}.page-sheet.is-loading{opacity:.38}.page-sheet.is-zoomed{width:calc(100% * var(--zoom));max-width:none}.page-sheet img{display:block;width:100%;height:auto;aspect-ratio:1241/1659;background:#fff}.loading-state{position:absolute;z-index:2;left:50%;top:50%;display:none;align-items:center;gap:10px;transform:translate(-50%,-50%);color:var(--muted);font:9px var(--mono);letter-spacing:.14em;text-transform:uppercase}.loading-state.is-visible{display:flex}.loading-state span{width:13px;height:13px;border:1px solid var(--line2);border-top-color:var(--amber);border-radius:50%;animation:spin .8s linear infinite}.viewer-status{min-height:42px;padding:9px 14px;display:flex;justify-content:space-between;align-items:center;gap:20px;border-top:1px solid var(--line);color:var(--muted2);font:8px var(--mono);letter-spacing:.08em;text-transform:uppercase}.viewer-status div{display:flex;align-items:center;gap:8px;color:var(--muted)}.status-dot{width:5px;height:5px;border-radius:50%;background:var(--cyan);box-shadow:0 0 8px var(--cyan)}.catalog-support{max-width:1180px;margin:30px auto 0;padding:30px 32px;display:flex;align-items:end;justify-content:space-between;gap:42px;border:1px solid var(--line2);background:linear-gradient(120deg,#101718,#0b1011)}.catalog-support h2{margin-top:11px;font-size:clamp(21px,2.4vw,34px);line-height:1.05;text-transform:uppercase}.catalog-support p{max-width:740px;margin-top:12px;color:var(--muted);font-size:12px;line-height:1.65}.catalog-support>a{flex:none;padding:14px 17px;background:var(--amber);color:#080b0c;text-decoration:none;font:800 9px var(--mono);letter-spacing:.1em;text-transform:uppercase}.catalog-support>a span{margin-left:12px}.copy-toast{position:fixed;z-index:200;left:50%;bottom:28px;padding:11px 16px;transform:translate(-50%,20px);background:var(--amber);color:#080b0c;opacity:0;pointer-events:none;font:800 9px var(--mono);letter-spacing:.1em;text-transform:uppercase;transition:.2s}.copy-toast.is-visible{opacity:1;transform:translate(-50%,0)}
.viewer-shell:fullscreen{width:100vw;height:100vh;max-width:none;border:0;background:#080b0c}.viewer-shell:fullscreen .viewer-stage{height:calc(100vh - 100px);min-height:0}.viewer-shell:fullscreen .viewer-toolbar{height:58px}.viewer-shell:fullscreen .viewer-status{height:42px}.viewer-shell:fullscreen .fullscreen-button{color:var(--amber)}
.catalog-locked{overflow:hidden}.catalog-locked .site-header,.catalog-locked .catalog-app{filter:blur(12px);pointer-events:none;user-select:none}.access-gate{position:fixed;z-index:1000;inset:0;display:grid;place-items:center;padding:24px;background:radial-gradient(760px 460px at 50% 22%,rgba(95,208,194,.1),transparent 70%),linear-gradient(rgba(150,175,170,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(150,175,170,.035) 1px,transparent 1px),rgba(5,8,9,.97);background-size:auto,72px 72px,72px 72px,auto;opacity:1;transition:opacity .28s ease}.access-gate[aria-hidden="true"]{opacity:0;pointer-events:none}.access-panel{position:relative;width:min(100%,510px);padding:46px 44px 40px;border:1px solid var(--line2);background:linear-gradient(145deg,rgba(17,25,26,.98),rgba(8,12,13,.99));box-shadow:0 30px 90px rgba(0,0,0,.55)}.access-panel:before,.access-panel:after{content:"";position:absolute;width:28px;height:28px;border-color:var(--amber)}.access-panel:before{left:-1px;top:-1px;border-left:2px solid var(--amber);border-top:2px solid var(--amber)}.access-panel:after{right:-1px;bottom:-1px;border-right:2px solid var(--amber);border-bottom:2px solid var(--amber)}.access-brand{height:34px;margin-bottom:42px;display:flex;align-items:center;gap:13px;color:var(--muted2);font:11px var(--mono)}.access-brand img{display:block;width:auto;object-fit:contain}.access-brand img:first-child{height:26px}.access-brand img:last-child{height:28px}.access-panel h1{margin-top:14px;font-size:clamp(30px,5vw,46px);line-height:1;text-transform:uppercase;letter-spacing:-.025em}.access-panel>p{margin-top:17px;color:var(--muted);font-size:13px}.access-form{margin-top:33px}.access-form label{display:block;margin-bottom:9px;color:var(--muted2);font:700 8px var(--mono);letter-spacing:.16em;text-transform:uppercase}.access-field{display:grid;grid-template-columns:minmax(0,1fr) auto}.access-field input{min-width:0;height:48px;padding:0 15px;border:1px solid var(--line2);border-right:0;outline:0;background:#070a0b;color:var(--ink);font:700 16px var(--mono);letter-spacing:.18em}.access-field input:focus{border-color:var(--amber);box-shadow:inset 0 0 0 1px rgba(224,161,59,.18)}.access-field button{height:48px;padding:0 17px;border:1px solid var(--amber);background:var(--amber);color:#080b0c;font:800 9px var(--mono);letter-spacing:.08em;text-transform:uppercase;cursor:pointer}.access-field button:hover{background:#f0b44e}.access-field button span{margin-left:9px}.access-error{display:none;margin-top:10px;color:#ef8f78;font:9px var(--mono);letter-spacing:.04em}.access-form.has-error .access-error{display:block}.access-form.has-error .access-field{animation:gate-shake .28s ease}.access-form.has-error input{border-color:#d26d59}.access-panel>small{display:block;margin-top:32px;padding-top:17px;border-top:1px solid var(--line);color:var(--muted2);font:8px var(--mono);letter-spacing:.15em;text-transform:uppercase}
html[lang="ru"] .catalog-intro h1{font-size:clamp(28px,3vw,46px);line-height:1.05}
html[lang="ru"] .site-nav{gap:21px;font-size:9px}
html[lang="ru"] .header-cta{font-size:8px}
@keyframes spin{to{transform:rotate(360deg)}}
@keyframes gate-shake{25%{transform:translateX(-5px)}50%{transform:translateX(5px)}75%{transform:translateX(-3px)}}
@media(max-width:1100px){:root{--sidebar:280px}.site-nav{gap:16px}.catalog-workspace{padding-left:24px;padding-right:24px}.catalog-intro{grid-template-columns:1fr;gap:18px}.catalog-intro p{max-width:760px}.viewer-stage{min-height:520px}}
@media(max-width:820px){:root{--header:70px}.site-nav{display:none}.header-inner{padding:0 18px}.header-cta{margin-left:auto}.catalog-app{display:block}.catalog-sidebar{top:0;z-index:140;width:min(88vw,340px);transform:translateX(-101%);transition:transform .24s ease}.catalog-sidebar.is-open{transform:none}.sidebar-head{padding-top:22px}.sidebar-close{display:block}.sidebar-scrim{position:fixed;z-index:130;inset:0;display:block;border:0;background:rgba(0,0,0,.64);opacity:0;visibility:hidden;transition:.2s}.sidebar-scrim.is-visible{opacity:1;visibility:visible}.catalog-workspace{padding:28px 18px 56px}.catalog-intro{margin-bottom:22px}.catalog-intro h1{font-size:clamp(30px,8vw,44px)}html[lang="ru"] .catalog-intro h1{font-size:clamp(25px,6.8vw,36px);overflow-wrap:anywhere}.catalog-intro p{padding:0;border:0}.mobile-contents{display:inline-flex}.viewer-stage{height:calc(100vh - 214px);min-height:480px;padding:20px}.viewer-status>span{display:none}.catalog-support{display:block;padding:25px 22px}.catalog-support>a{display:inline-flex;margin-top:22px}.share-button .desktop-label{display:none}}
@media(max-width:560px){.brand .stt-logo{height:20px}.brand .vohann-logo{height:22px}.header-cta{padding:9px;font-size:0}.header-cta:after{content:"ENQUIRE";font-size:8px}html[lang="ru"] .header-cta{font-size:0}html[lang="ru"] .header-cta:after{content:"ЗАПРОС"}.catalog-workspace{padding-left:12px;padding-right:12px}html[lang="ru"] .catalog-intro h1{font-size:clamp(23px,6.2vw,29px)}.viewer-toolbar{height:auto;min-height:104px;padding:9px;align-items:stretch;flex-direction:column}.toolbar-group{justify-content:space-between}.toolbar-left{width:100%}.toolbar-left .tool-button{flex:1;justify-content:center}.desktop-label{display:none}.page-field{flex:1;justify-content:center}.viewer-stage{height:calc(100vh - 286px);min-height:430px;padding:14px 10px}.viewer-status{justify-content:center}.catalog-support{margin-top:18px}.fullscreen-button{display:none}}
@media(max-width:560px){.access-gate{padding:14px}.access-panel{padding:34px 23px 28px}.access-brand{margin-bottom:31px}.access-panel h1{font-size:30px}.access-field{grid-template-columns:1fr}.access-field input{border-right:1px solid var(--line2)}.access-field button{margin-top:9px;width:100%}.access-panel>small{margin-top:25px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}.page-sheet,.catalog-sidebar,.sidebar-scrim,.copy-toast{transition:none}}