/* Dark palette from the current ИИ Учительская trainers collection. */
:root{color-scheme:dark;--background:#150d2a;--surface:#fff;--text-primary:#f5f0ff;--text-secondary:#b5a5cc;--accent:#d1f866;--accent-hover:#e1ff98;--ink:#291645;--ink-secondary:#685c75;--line:#a888e42a;--preview:#f4f3f6;--radius-card:24px;--radius-control:14px;font-family:"Segoe UI",Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}body{margin:0;background:var(--background);color:var(--text-primary)}a{color:inherit;text-decoration:none}button{font:inherit;cursor:pointer}img,svg{display:block;max-width:100%}button,a{-webkit-tap-highlight-color:transparent;touch-action:manipulation}a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:5px}.shell{max-width:1248px;padding-inline:32px;margin:auto}.header{height:96px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{width:184px;display:block}.brand svg{width:100%;height:76px}.header-note{font-size:14px;color:var(--text-secondary)}.hero{display:flex;align-items:center;justify-content:space-between;gap:32px;padding-block:40px 36px}.eyebrow{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:650;margin:0 0 12px}h1{font-size:clamp(32px,3.55vw,48px);font-weight:700;line-height:1.1;letter-spacing:-.035em;margin:0}.intro{font-size:16px;line-height:1.55;color:var(--text-secondary);margin:18px 0 0}.mascot{width:132px;height:132px;flex:none;margin:0 20px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;scroll-margin-top:24px}.card{overflow:hidden;border-radius:var(--radius-card);background:var(--surface);color:var(--ink)}.preview{position:relative;width:100%;height:312px;display:flex;align-items:center;justify-content:center;border:0;background:var(--preview);padding:20px 64px;color:var(--ink);overflow:hidden}.preview img{height:100%;width:100%;object-fit:contain;transition:transform .2s ease}.preview:hover img{transform:scale(1.025)}.preview:focus-visible{outline:3px solid var(--ink);outline-offset:-6px}.number{position:absolute;left:22px;top:20px;font-size:14px;letter-spacing:.03em;color:var(--ink-secondary)}.zoom-label{position:absolute;right:18px;bottom:16px;border:1px solid #29164522;background:#ffffffed;border-radius:999px;padding:7px 12px;font-size:12px}.card-body{padding:24px}.card-heading{display:flex;align-items:center;justify-content:space-between;gap:12px}h2{margin:0;font-size:22px;line-height:1.25;letter-spacing:-.025em}.format{white-space:nowrap;font-size:12px;color:var(--ink-secondary)}.card-body p{font-size:15px;line-height:1.5;color:var(--ink-secondary);margin:10px 0 22px}.download{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:52px;padding:12px 18px;border-radius:var(--radius-control);background:var(--accent);color:var(--ink);font-size:16px;font-weight:650;transition:background .18s,transform .18s}.download:hover{background:var(--accent-hover)}.download:active{transform:translateY(1px)}.download:focus-visible{outline-color:var(--ink)}.download span{font-size:12px;font-weight:400}.coming{display:flex;gap:24px;align-items:center;border:1px solid var(--line);border-radius:var(--radius-card);padding:26px 30px;margin:28px 0 0;background:#201436}.soon{background:var(--accent);color:var(--ink);padding:8px 14px;border-radius:999px;font-size:13px;font-weight:650}.coming h2{font-size:24px}.coming p{margin:6px 0 0;font-size:15px;line-height:1.5;color:var(--text-secondary)}.footer{padding-block:26px 32px;font-size:12px;color:var(--text-secondary)}.skip{position:fixed;left:20px;top:-100px;z-index:5;background:var(--accent);color:var(--ink);padding:15px;border-radius:12px}.skip:focus{top:12px}.lightbox{width:min(900px,calc(100% - 32px));max-height:92dvh;border:0;border-radius:24px;background:var(--preview);color:var(--ink);padding:24px}.lightbox::backdrop{background:#0b051ad9;backdrop-filter:blur(6px)}.lightbox-top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:18px}.lightbox h2{font-size:20px}.close{border:1px solid #29164530;background:white;color:var(--ink);border-radius:12px;min-height:44px;padding:10px 16px}.close:focus-visible{outline-color:var(--ink)}.large-preview{max-width:100%;width:100%;height:calc(85dvh - 100px);object-fit:contain}
@media(min-width:1600px){.preview{height:340px}}
@media(max-width:1023px){.card-heading{align-items:flex-start;flex-direction:column;gap:6px}.preview{padding:20px 42px;height:280px}.card-body{padding:20px}.card-body p{min-height:45px}.mascot{width:100px;height:100px;margin:0}.shell{padding-inline:24px}h2{font-size:21px}}
@media(max-width:639px){.shell{padding-inline:18px}.header{height:82px}.brand{width:154px}.brand svg{height:65px}.header-note{max-width:100px;font-size:12px;text-align:right;line-height:1.5}.hero{padding-block:30px 26px;gap:0;position:relative}.hero>div{position:relative;z-index:1}.eyebrow{font-size:11px;margin-bottom:14px}h1{font-size:32px;max-width:340px;line-height:1.12}.intro{max-width:300px;font-size:15px;margin-top:16px}.mascot{position:absolute;width:52px;height:52px;right:0;top:14px;opacity:.9}.grid{grid-template-columns:1fr;gap:20px}.preview{height:300px;padding:18px 46px}.card-heading{flex-direction:row;align-items:center;flex-wrap:wrap}.card-body p{min-height:0;font-size:14px;margin:9px 0 18px}.download{font-size:15px}.coming{align-items:flex-start;gap:16px;padding:22px 20px;flex-wrap:wrap}.coming h2{font-size:23px}.coming p{font-size:14px}.lightbox{padding:18px}.lightbox h2{font-size:17px}.close{font-size:14px}.footer{padding-block:24px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{transition:none!important;scroll-behavior:auto!important}}
.preview[data-preview="fold"] img,.preview[data-preview="keyrings"] img{transform:scale(1.3)}.preview[data-preview="fold"]:hover img,.preview[data-preview="keyrings"]:hover img{transform:scale(1.33)}