/* The electronic user guide: the code gate and the reader. The reader is for the screen only: nothing is selectable,
   nothing prints, pictures cannot be dragged out, and the words chosen with the code lie over the pages. */
:root{--g-brand:#8b1e2d;--g-ink:#1f2933;--g-muted:#64748b;--g-line:#e5e7eb;--g-bg:#f6f4f2;--g-card:#fff}
*{box-sizing:border-box}
html,body{margin:0;height:100%}
body{font-family:"Segoe UI",Tahoma,"Noto Sans Arabic","Noto Sans Georgian",system-ui,sans-serif;color:var(--g-ink);background:var(--g-bg);line-height:1.8}
a{color:var(--g-brand);text-decoration:none}

/* ---- the gate ---- */
.guide-gate{display:grid;place-items:center;padding:1rem;background:linear-gradient(135deg,#8b1e2d,#3b1a2a)}
.g-gate-card{width:min(100%,430px);padding:2rem 1.8rem;border-radius:24px;background:#fff;box-shadow:0 30px 70px rgba(0,0,0,.35);text-align:center}
.g-gate-icon{display:grid;place-items:center;width:76px;height:76px;margin:0 auto .6rem;border-radius:24px;font-size:2.4rem;background:color-mix(in srgb,var(--g-brand) 10%,#fff)}
.g-gate-card h1{margin:0 0 .3rem;font-size:1.6rem}.g-gate-card p{margin:0 0 1.1rem;color:var(--g-muted);font-size:.95rem}
.g-gate-card form{display:grid;gap:.6rem;text-align:start}.g-gate-card label{font-weight:700;font-size:.9rem}
.g-gate-card input{height:54px;border:2px solid var(--g-line);border-radius:14px;text-align:center;font:700 1.5rem/1 ui-monospace,Consolas,monospace;letter-spacing:.25em;text-transform:uppercase;color:var(--g-ink)}
.g-gate-card input:focus{outline:none;border-color:var(--g-brand)}
.g-gate-card button{height:50px;border:0;border-radius:14px;background:var(--g-brand);color:#fff;font:inherit;font-weight:800;font-size:1.05rem;cursor:pointer}
.g-gate-card button:hover{filter:brightness(1.1)}
.g-error{margin-bottom:.9rem;padding:.7rem .9rem;border-radius:12px;background:#fdeceb;color:#9f1d2c;font-weight:700}
.g-gate-back{display:inline-block;margin-top:1.1rem;font-size:.9rem;color:var(--g-muted)}

/* ---- the reader ---- */
.guide-body{display:flex;flex-direction:column;overflow:hidden;-webkit-user-select:none;user-select:none;-webkit-touch-callout:none}
.g-top{flex:none;display:flex;align-items:center;gap:.7rem;padding:.55rem 1rem;background:#fff;border-bottom:1px solid var(--g-line);box-shadow:0 2px 10px rgba(15,23,42,.05);z-index:5}
.g-brand{display:flex;align-items:center;gap:.5rem;color:var(--g-ink);font-size:1.1rem;white-space:nowrap}.g-brand span{font-size:1.4rem}
.g-search{flex:1;display:flex;max-width:560px;margin-inline:auto;border:1px solid var(--g-line);border-radius:999px;overflow:hidden;background:var(--g-bg)}
.g-search input{flex:1;min-width:0;height:40px;padding:0 1rem;border:0;background:transparent;font:inherit;color:inherit;-webkit-user-select:text;user-select:text}
.g-search input:focus{outline:none}.g-search:focus-within{border-color:var(--g-brand);background:#fff}
.g-search button{width:46px;border:0;background:transparent;cursor:pointer;font-size:1rem}
.g-lang{display:flex;padding:3px;border-radius:999px;background:var(--g-bg);border:1px solid var(--g-line)}
.g-lang a{padding:.2rem .8rem;border-radius:999px;color:var(--g-muted);font-size:.85rem;font-weight:700}.g-lang a.active{background:var(--g-brand);color:#fff}
.g-until{display:flex;align-items:center;gap:.3rem;padding:.25rem .7rem;border-radius:999px;background:#fff7e6;color:#8a5a00;font-size:.78rem;white-space:nowrap}.g-until i{font-style:normal}
.g-top form{margin:0}.g-exit{padding:.4rem 1rem;border:1px solid var(--g-line);border-radius:999px;background:#fff;color:var(--g-ink);font:inherit;font-size:.85rem;font-weight:700;cursor:pointer;white-space:nowrap}
.g-exit:hover{border-color:var(--g-brand);color:var(--g-brand)}
.g-toc-toggle{display:none;width:40px;height:40px;border:1px solid var(--g-line);border-radius:12px;background:#fff;font-size:1.1rem;cursor:pointer}
.g-shell{flex:1;display:flex;min-height:0}
.g-toc{flex:none;width:300px;overflow-y:auto;padding:1rem .8rem 2rem;background:#fff;border-inline-end:1px solid var(--g-line)}
.g-toc h2{margin:0 .5rem .5rem;font-size:.85rem;color:var(--g-muted);letter-spacing:.02em}
.g-toc ol{list-style:none;margin:0;padding:0}
.g-toc details>ol{margin:.1rem 0 .4rem;padding-inline-start:.9rem;border-inline-start:2px solid var(--g-line);margin-inline-start:.9rem}
.g-toc summary{display:flex;align-items:center;gap:.4rem;list-style:none;cursor:pointer;border-radius:10px}.g-toc summary::-webkit-details-marker{display:none}
.g-toc summary::before{content:"▸";color:var(--g-muted);font-size:.8rem;width:1rem;text-align:center;transition:transform .15s}
[dir=rtl] .g-toc summary::before{content:"◂"}
.g-toc details[open]>summary::before{transform:rotate(90deg)}[dir=rtl] .g-toc details[open]>summary::before{transform:rotate(-90deg)}
.g-toc summary a,.g-toc .g-part{flex:1;font-weight:800;color:var(--g-ink)}
.g-toc summary small{padding:0 .5rem;border-radius:999px;background:var(--g-bg);color:var(--g-muted);font-size:.72rem}
.g-toc a{display:block;padding:.38rem .6rem;border-radius:10px;color:#334155;font-size:.92rem;line-height:1.5}
.g-toc a:hover{background:var(--g-bg)}.g-toc a.active{background:color-mix(in srgb,var(--g-brand) 11%,#fff);color:var(--g-brand);font-weight:800}
.g-main{flex:1;min-width:0;overflow-y:auto;padding:1rem 1rem 2.5rem}
/* the page takes the whole width beside the index — no empty margins on a wide screen */
.g-page{margin:0;padding:1.4rem clamp(1rem,2vw,1.8rem);border-radius:22px;background:var(--g-card);border:1px solid var(--g-line);box-shadow:0 8px 26px rgba(15,23,42,.06)}
/* where the page is, and the way back to the level above it */
.g-way{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem .9rem;margin-bottom:.6rem}
.g-back{display:inline-flex;align-items:center;gap:.4rem;padding:.38rem .95rem;border:1px solid var(--g-line);border-radius:999px;background:var(--g-bg);color:var(--g-ink);font-weight:800;font-size:.9rem}
.g-back:hover{border-color:var(--g-brand);color:var(--g-brand)}.g-back i{font-style:normal}.g-back b{font-weight:600;color:var(--g-muted)}.g-back b::before{content:"· "}
.g-crumb{margin:0;display:flex;flex-wrap:wrap;align-items:center;gap:.3rem;color:var(--g-muted);font-size:.85rem}.g-crumb a{color:var(--g-brand);font-weight:700}.g-crumb i{font-style:normal}
.g-page h1{margin:.1rem 0 .8rem;font-size:1.7rem;line-height:1.4}
/* the title, with «previous» / «next» right beside it on its line */
.g-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:flex-start;gap:.4rem 1.2rem;margin-bottom:.8rem}.g-head h1{margin:0}
.g-step{display:flex;gap:.4rem;flex:none}
.g-step a{display:inline-flex;align-items:center;gap:.4rem;padding:.38rem .95rem;border:1px solid var(--g-line);border-radius:999px;background:var(--g-bg);color:var(--g-ink);font-weight:800;font-size:.9rem;white-space:nowrap}
.g-step a:hover{border-color:var(--g-brand);color:var(--g-brand)}.g-step i{font-style:normal}
.g-text{font-size:1.02rem}.g-text p{margin:.5rem 0}.g-text ul,.g-text ol{margin:.5rem 0;padding-inline-start:1.5rem}.g-text li{margin:.2rem 0}
.g-text h2,.g-text h3,.g-text h4{margin:1.2rem 0 .4rem;line-height:1.4}.g-text h3{font-size:1.2rem}.g-text h4{font-size:1.08rem}
.g-text figure{margin:1rem 0;text-align:center}.g-text figure img{width:min(100%,1280px)}.g-text img{max-width:100%;height:auto;border-radius:12px;border:1px solid var(--g-line);box-shadow:0 6px 18px rgba(15,23,42,.1);pointer-events:none;-webkit-user-drag:none}
.g-text figcaption{margin-top:.35rem;color:var(--g-muted);font-size:.85rem}
.g-text table{width:100%;border-collapse:collapse;margin:.8rem 0;font-size:.93rem}.g-text th,.g-text td{padding:.5rem .65rem;border:1px solid var(--g-line);text-align:start;vertical-align:top}.g-text th{background:var(--g-bg)}
.g-text .ug-note,.g-text .ug-intro,.g-text blockquote{margin:.8rem 0;padding:.7rem .9rem;border-radius:12px;background:color-mix(in srgb,var(--g-brand) 5%,#fff);border-inline-start:4px solid var(--g-brand)}
.g-text mark,.g-hits mark{background:#fde68a;border-radius:4px;padding:0 .15em}
.g-children{margin:1rem 0 0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:.5rem;counter-reset:c}
.g-children a{display:flex;align-items:center;justify-content:space-between;gap:.6rem;min-height:3.4rem;padding:.7rem .95rem;border:1px solid var(--g-line);border-radius:14px;background:var(--g-card);color:var(--g-ink);font-weight:700;box-shadow:0 3px 10px rgba(15,23,42,.04)}.g-children a:hover{border-color:var(--g-brand);color:var(--g-brand)}
.g-children small{flex:none;padding:.1rem .6rem;border-radius:999px;background:var(--g-bg);color:var(--g-muted);font-size:.75rem;font-weight:600;white-space:nowrap}
.g-home .g-children{grid-template-columns:repeat(auto-fill,minmax(280px,1fr))}.g-home .g-children a{min-height:4.4rem;font-size:1.05rem}
.g-toc details details>ol{margin-inline-start:.5rem}.g-toc details details summary a{font-weight:700;font-size:.9rem}
.g-pager{margin:1rem 0 0;display:flex;justify-content:space-between;gap:.8rem}
.g-pager a{flex:0 1 48%;display:grid;padding:.7rem 1rem;border:1px solid var(--g-line);border-radius:16px;background:#fff;color:var(--g-ink)}.g-pager a:hover{border-color:var(--g-brand)}
.g-pager small{color:var(--g-muted);font-size:.78rem}.g-pager span{font-weight:700}.g-next{text-align:end;margin-inline-start:auto}
.g-count{color:var(--g-muted);margin:0 0 .8rem}
.g-hits{list-style:none;margin:0;padding:0;display:grid;gap:.6rem}
.g-hits a{display:grid;gap:.1rem;padding:.75rem 1rem;border:1px solid var(--g-line);border-radius:14px;color:var(--g-ink)}.g-hits a:hover{border-color:var(--g-brand)}
.g-hits strong{color:var(--g-brand)}.g-hits small{color:var(--g-muted);font-size:.8rem}.g-hits span{font-size:.92rem;color:#475569}
/* the words chosen with the code, over every page */
.g-mark{position:fixed;inset:-20%;z-index:40;pointer-events:none;display:grid;grid-template-columns:repeat(6,1fr);align-content:space-around;justify-items:center;gap:5.5rem 1rem;transform:rotate(-24deg);opacity:.11;font-weight:800;font-size:1.25rem;color:#000;overflow:hidden}
.g-mark span{white-space:nowrap}
/* shown instead of the pages while the window is not in front (another program, a capture tool) */
.g-veil{position:fixed;inset:0;z-index:50;display:none;place-items:center;background:#fff;font-size:4rem}
.guide-body.is-away .g-veil{display:grid}.guide-body.is-away .g-shell{visibility:hidden}
@media print{body{display:none!important}}
@media (max-width:900px){
 .g-toc-toggle{display:block}.g-brand strong{display:none}.g-until b{display:none}
 .g-toc{position:fixed;inset-block:57px 0;inset-inline-start:0;z-index:20;width:min(86vw,330px);transform:translateX(-105%);transition:transform .2s;box-shadow:0 0 40px rgba(0,0,0,.25)}
 [dir=rtl] .g-toc{transform:translateX(105%)}.guide-body.toc-open .g-toc{transform:none}
 .g-top{gap:.4rem;padding:.5rem .6rem}.g-lang a{padding:.2rem .55rem}.g-exit{padding:.4rem .7rem}
 .g-mark{grid-template-columns:repeat(3,1fr);font-size:1rem}
}