/* ============================================================
 * LncACTdb 4.0 鈥� Help / Documentation page
 * A long-form user guide: sticky scroll-spy side nav, section
 * cards, the twelve tool blocks (each with a figure slot the
 * maintainer fills), an FAQ accordion and a contact block.
 * Loads after tokens.css + home.css; self-contained otherwise.
 * Palette: lncRNA=violet --la-lnc, miRNA=amber --la-mir,
 * mRNA=emerald --la-mrna, primary indigo --la-primary, cyan.
 * ============================================================ */

/* page-local wide wrapper (mirrors Statistics' .la-swrap / Download's .la-dwrap) */
.la-help .la-hwrap{ max-width:1380px; margin:0 auto; padding:0 24px; text-align:left; }

/* shared page-head band, kept plain so every inner page matches
   (same 20px override Browse / Statistics / Download use) */
.la-help .la-pagehead{ padding:20px 0 20px; }

/* reading-progress bar pinned just under the sticky nav */
.la-help-progress{ position:sticky; top:70px; z-index:40; height:3px;
  background:transparent; pointer-events:none; }
.la-help-progress > span{ display:block; height:100%; width:0;
  background:linear-gradient(90deg,var(--la-primary),var(--la-cyan));
  box-shadow:0 0 8px rgba(var(--la-primary-rgb),.5); transition:width .1s linear; }

/* ===================== LAYOUT GRID ===================== */
.la-help-main{ padding:28px 24px 80px; }
.la-help-grid{ display:grid; grid-template-columns:264px minmax(0,1fr); gap:40px;
  align-items:start; }
@media(max-width:1024px){ .la-help-grid{ grid-template-columns:1fr; gap:18px; } }

/* ===================== FLOATING SIDE NAV ===================== */
.la-help-nav{ position:sticky; top:88px; align-self:start; }
.la-help-nav__card{ background:#fff; border:1px solid var(--la-line);
  border-radius:var(--la-r-lg); box-shadow:var(--la-shadow-sm);
  overflow:hidden; max-height:calc(100vh - 110px); display:flex; flex-direction:column; }
.la-help-nav__hd{ display:flex; align-items:center; gap:9px; padding:15px 18px;
  border-bottom:1px solid var(--la-line-2);
  font:700 12px/1 var(--la-mono); letter-spacing:.08em; text-transform:uppercase;
  color:var(--la-primary-d); background:var(--la-bg-tint); }
.la-help-nav__hd > i{ color:var(--la-primary); }
.la-help-nav__hd > span{ flex:1; }
.la-help-nav__toggle{ border:0; background:transparent; cursor:pointer; color:var(--la-muted);
  width:24px; height:24px; border-radius:7px; display:none; place-items:center; transition:.16s; }
.la-help-nav__toggle:hover{ background:#fff; color:var(--la-primary); }

.la-help-toc{ overflow-y:auto; padding:10px 10px 14px; display:flex; flex-direction:column; gap:1px; }
.la-help-toc::-webkit-scrollbar{ width:7px; }
.la-help-toc::-webkit-scrollbar-thumb{ background:var(--la-line); border-radius:99px; }

/* TOC top-level links */
.la-toc-a, .la-toc-head{ display:flex; align-items:center; gap:10px; width:100%;
  padding:9px 11px; border-radius:10px; cursor:pointer; text-align:left;
  font:600 13px/1.25 var(--la-font); color:var(--la-ink-2);
  text-decoration:none; border:0; background:transparent; transition:.14s; }
.la-toc-a::before{ content:""; width:7px; height:7px; border-radius:50%; flex:none;
  background:var(--la-line); transition:.14s; }
.la-toc-a:hover, .la-toc-head:hover{ background:var(--la-bg-tint); color:var(--la-primary-d); }
.la-toc-a.is-active{ background:rgba(var(--la-primary-rgb),.10); color:var(--la-primary-d); font-weight:700; }
.la-toc-a.is-active::before{ background:var(--la-primary); box-shadow:0 0 0 3px rgba(var(--la-primary-rgb),.18); }

/* TOC collapsible groups */
.la-toc-group{ display:flex; flex-direction:column; }
.la-toc-head{ justify-content:space-between; }
.la-toc-head > span{ flex:1; }
.la-toc-head > i{ font-size:11px; color:var(--la-muted); transition:transform .22s; }
.la-toc-group.is-open .la-toc-head > i{ transform:rotate(180deg); }
.la-toc-sub{ display:grid; grid-template-rows:0fr; transition:grid-template-rows .25s ease; }
.la-toc-group.is-open .la-toc-sub{ grid-template-rows:1fr; }
.la-toc-sub > div, .la-toc-sub{ min-height:0; }
.la-toc-sub{ overflow:hidden; }
.la-toc-sub a{ display:block; padding:7px 11px 7px 30px; border-radius:8px;
  font:500 12.5px/1.3 var(--la-font); color:var(--la-muted); text-decoration:none;
  position:relative; transition:.14s; }
.la-toc-sub a::before{ content:""; position:absolute; left:17px; top:50%; width:5px; height:5px;
  border-radius:50%; background:var(--la-line); transform:translateY(-50%); transition:.14s; }
.la-toc-sub a:hover{ background:var(--la-bg-tint); color:var(--la-primary-d); }
.la-toc-sub a.is-active{ color:var(--la-primary-d); font-weight:700; }
.la-toc-sub a.is-active::before{ background:var(--la-primary); box-shadow:0 0 0 3px rgba(var(--la-primary-rgb),.16); }

/* ===================== CONTENT / SECTION SHELL ===================== */
.la-help-content{ min-width:0; }
.la-hsec{ scroll-margin-top:96px; padding:30px 0 12px; }
.la-hsec + .la-hsec{ border-top:1px solid var(--la-line-2); margin-top:8px; }
.la-hsec__eyebrow{ display:inline-flex; align-items:center; gap:8px;
  font:700 11.5px/1 var(--la-mono); letter-spacing:.12em; text-transform:uppercase;
  color:var(--la-primary); background:var(--la-bg-tint); padding:7px 13px; border-radius:999px;
  margin-bottom:14px; }
.la-hsec__eyebrow i{ color:var(--la-cyan); }
.la-hsec__title{ font:800 30px/1.12 var(--la-font-display); color:var(--la-ink);
  letter-spacing:-.02em; margin:0 0 14px; }
.la-hsec__lead{ font:400 16px/1.7 var(--la-font); color:var(--la-ink-2); max-width:102ch; margin:0 0 8px;text-align: justify; }
.la-hsec__lead b{ color:var(--la-ink); font-weight:700; }
.la-hsec__lead a, .la-faq__a a, .la-relnote a{ color:var(--la-primary); font-weight:600;
  text-decoration:none; border-bottom:1.5px solid rgba(var(--la-primary-rgb),.25); }
.la-hsec__lead a:hover{ border-color:var(--la-primary); }
.la-hsec__note{ font:400 14px/1.6 var(--la-font); color:var(--la-muted); max-width:74ch; margin:6px 0 0; }
.la-hsec__note code, .la-hsec__lead code{ font:600 13px var(--la-mono); color:var(--la-primary-d);
  background:var(--la-bg-tint); padding:1px 6px; border-radius:6px; }

/* sub-headings inside a section */
.la-hsub{ display:flex; align-items:center; gap:12px; margin:34px 0 16px;
  font:700 19px/1.2 var(--la-font-display); color:var(--la-ink); }
.la-hsub__no{ font:800 13px/1 var(--la-mono); color:var(--la-primary);
  background:var(--la-bg-tint); border:1px solid var(--la-line); border-radius:8px;
  padding:6px 9px; letter-spacing:.02em; }

/* ===================== HERO STATS (overview) ===================== */
.la-hstats{ display:grid; grid-template-columns:repeat(6,1fr); gap:12px; margin:24px 0 8px; }
@media(max-width:900px){ .la-hstats{ grid-template-columns:repeat(3,1fr); } }
@media(max-width:520px){ .la-hstats{ grid-template-columns:repeat(2,1fr); } }
.la-hstat{ background:var(--la-bg-soft); border:1px solid var(--la-line); border-radius:var(--la-r);
  padding:16px 14px; text-align:center; }
.la-hstat__n{ font:800 24px/1 var(--la-font-display); color:var(--la-primary-d);
  letter-spacing:-.02em; font-variant-numeric:tabular-nums; }
.la-hstat__l{ margin-top:6px; font:600 11px/1.2 var(--la-mono); letter-spacing:.05em;
  color:var(--la-muted); }

/* ===================== QUICK-START STEPS ===================== */
.la-steps{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin:6px 0 4px; }
@media(max-width:900px){ .la-steps{ grid-template-columns:1fr 1fr; } }
@media(max-width:520px){ .la-steps{ grid-template-columns:1fr; } }
.la-step{ position:relative; overflow:hidden; background:#fff; border:1px solid var(--la-line);
  border-radius:var(--la-r-lg); padding:20px 18px; transition:transform .2s, box-shadow .2s, border-color .2s; }
.la-step::before{ content:""; position:absolute; left:0; top:0; bottom:0; width:4px; background:var(--sc,var(--la-primary)); }
.la-step:hover{ transform:translateY(-4px); box-shadow:var(--la-shadow); border-color:transparent; }
.la-step__ic{ width:46px; height:46px; border-radius:13px; display:grid; place-items:center;
  font-size:19px; color:#fff; margin-bottom:14px;
  background:linear-gradient(140deg, rgba(255,255,255,.22), rgba(0,0,0,.10)), var(--sc,var(--la-primary)); }
.la-step__n{ font:700 16px/1.25 var(--la-font-display); color:var(--la-ink); margin-bottom:7px; }
.la-step p{ font:400 13.5px/1.6 var(--la-font); color:var(--la-muted); margin:0; }
.la-step p a{ color:var(--la-primary); font-weight:600; text-decoration:none; }
.la-step p a:hover{ text-decoration:underline; }

/* ===================== CALLOUTS ===================== */
.la-callout{ display:flex; gap:14px; align-items:flex-start; margin:24px 0 6px;
  border-radius:var(--la-r); padding:16px 18px; font:400 14px/1.65 var(--la-font); }
.la-callout i{ font-size:17px; margin-top:1px; flex:none; }
.la-callout b{ color:var(--la-ink); }
.la-callout--tip{ background:rgba(6,182,212,.07); border:1px solid rgba(6,182,212,.22); color:var(--la-ink-2); }
.la-callout--tip i{ color:var(--la-cyan-d); }
.la-callout--note{ background:var(--la-bg-tint); border:1px solid var(--la-line); color:var(--la-ink-2); }
.la-callout--note i{ color:var(--la-primary); }
.la-callout--sm{ margin:14px 0; padding:12px 15px; font-size:13px; }
.la-callout .la-path{ font:600 13px var(--la-mono); color:var(--la-primary-d);
  background:#fff; border:1px solid var(--la-line); padding:2px 8px; border-radius:6px; white-space:nowrap; }

/* ===================== FIGURE SLOTS (maintainer fills these) ===================== */
.la-fig{ margin:26px 0 6px; }
.la-fig__slot{ position:relative; display:flex; flex-direction:column; align-items:center;
  justify-content:center; text-align:center; gap:9px; min-height:230px; padding:34px 24px;
  border:2px dashed var(--la-line); border-radius:var(--la-r-lg); color:var(--la-muted);
  background:repeating-linear-gradient(45deg,var(--la-bg-soft),var(--la-bg-soft) 14px,#fff 14px,#fff 28px);
  transition:border-color .2s, color .2s; }
.la-fig__slot:hover{ border-color:var(--la-primary-l); color:var(--la-primary); }
.la-fig__slot > i{ font-size:30px; opacity:.55; }
.la-fig__hint{ font:600 12.5px var(--la-font); }
.la-fig__slot code{ font:600 12.5px var(--la-mono); color:var(--la-primary-d);
  background:#fff; border:1px solid var(--la-line); padding:4px 10px; border-radius:8px; }
.la-fig__sub{ font:400 12px/1.5 var(--la-font); color:var(--la-muted); max-width:48ch; }
/* when an image is present, JS adds .has-img and injects an <img> */
.la-fig.has-img .la-fig__slot{ display:none; }
.la-fig__img{ display:block; width:100%; height:auto; border-radius:var(--la-r-lg);
  border:1px solid var(--la-line); box-shadow:var(--la-shadow-sm); }
.la-fig figcaption{ margin-top:12px; font:400 13px/1.6 var(--la-font); color:var(--la-muted);
  text-align:center; }
.la-fig figcaption b{ color:var(--la-ink-2); }
.la-fig--tool{ margin:18px 0 0; }
.la-fig--tool .la-fig__slot{ min-height:150px; padding:24px; flex-direction:row; gap:14px; flex-wrap:wrap; }
.la-fig--tool .la-fig__slot > i{ font-size:22px; }

/* ===================== TRIAD DIAGRAM (data model) ===================== */
.la-triad{ display:flex; align-items:center; justify-content:center; gap:0; flex-wrap:wrap;
  margin:26px 0 14px; padding:26px 20px; background:var(--la-bg-soft);
  border:1px solid var(--la-line); border-radius:var(--la-r-lg); }
.la-triad__bridge{ display:flex; align-items:center; gap:0; }
.la-triad__bridge svg{ width:70px; height:40px; color:var(--la-mir); flex:none; }
.la-triad__node{ display:flex; flex-direction:column; align-items:center; gap:3px;
  background:#fff; border:1.5px solid var(--nc,var(--la-line)); border-radius:16px;
  padding:14px 22px; min-width:120px; box-shadow:var(--la-shadow-sm); }
.la-triad__node b{ font:700 16px var(--la-font-display); color:var(--la-ink); }
.la-triad__node small{ font:500 11px var(--la-mono); color:var(--la-muted); letter-spacing:.03em; }
.la-triad__dot{ width:13px; height:13px; border-radius:50%; background:var(--nc,var(--la-primary));
  box-shadow:0 0 0 4px rgba(67,56,202,.18);
  box-shadow:0 0 0 4px color-mix(in srgb, var(--nc,var(--la-primary)) 18%, transparent); margin-bottom:3px; }
.la-triad__node--lnc{ --nc:var(--la-lnc); }
.la-triad__node--mir{ --nc:var(--la-mir); margin:0 6px; }
.la-triad__node--mrna{ --nc:var(--la-mrna); }
@media(max-width:640px){ .la-triad__bridge svg{ width:40px; } .la-triad__node{ min-width:96px; padding:12px 14px; } }

.la-colorkey{ display:flex; align-items:center; gap:8px; flex-wrap:wrap;
  font:400 14px var(--la-font); color:var(--la-muted); margin:0 0 4px; }

/* ===================== MODALITY GRID ===================== */
.la-modgrid{ display:grid; grid-template-columns:repeat(4,1fr); gap:16px; margin:8px 0 4px; }
@media(max-width:900px){ .la-modgrid{ grid-template-columns:1fr 1fr; } }
@media(max-width:520px){ .la-modgrid{ grid-template-columns:1fr; } }
.la-modcard{ position:relative; overflow:hidden; background:#fff; border:1px solid var(--la-line);
  border-radius:var(--la-r-lg); padding:20px 18px; transition:transform .2s, box-shadow .2s, border-color .2s; }
.la-modcard:hover{ transform:translateY(-3px); box-shadow:var(--la-shadow-sm);
  border-color:color-mix(in srgb, var(--mc,var(--la-primary)) 40%, var(--la-line)); }
.la-modcard__tag{ position:absolute; right:16px; top:16px; width:34px; height:34px; border-radius:10px;
  display:grid; place-items:center; font:800 15px var(--la-mono); color:#fff;
  background:var(--mc,var(--la-primary)); box-shadow:0 6px 16px rgba(11,20,55,.16); }
.la-modcard h4{ font:700 17px var(--la-font-display); color:var(--la-ink); margin:2px 0 8px;
  padding-right:42px; }
.la-modcard p{ font:400 13.5px/1.6 var(--la-font); color:var(--la-muted); margin:0; }

/* ===================== EVIDENCE CARDS ===================== */
.la-evidence{ display:grid; grid-template-columns:1fr 1fr; gap:18px; margin:6px 0 4px; }
@media(max-width:780px){ .la-evidence{ grid-template-columns:1fr; } }
.la-evcard{ border-radius:var(--la-r-lg); padding:22px 22px; border:1px solid var(--la-line); }
.la-evcard--comp{ background:linear-gradient(135deg, rgba(67,56,202,.05), rgba(6,182,212,.05)); }
.la-evcard--lit{ background:linear-gradient(135deg, rgba(16,185,129,.06), rgba(245,158,11,.05)); }
.la-evcard__hd{ display:flex; align-items:center; gap:12px; margin-bottom:10px; }
.la-evcard__hd i{ width:40px; height:40px; border-radius:11px; display:grid; place-items:center;
  font-size:17px; color:#fff; flex:none; }
.la-evcard--comp .la-evcard__hd i{ background:linear-gradient(135deg,var(--la-primary),var(--la-cyan)); }
.la-evcard--lit .la-evcard__hd i{ background:linear-gradient(135deg,var(--la-mrna),var(--la-mir)); }
.la-evcard__hd h4{ font:700 17px var(--la-font-display); color:var(--la-ink); margin:0; }
.la-evcard p{ font:400 14px/1.65 var(--la-font); color:var(--la-ink-2); margin:0; }
.la-evcard b{ color:var(--la-ink); }

/* ===================== SEARCH CARDS ===================== */
.la-searchgrid{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:8px 0 4px; }
@media(max-width:1100px){ .la-searchgrid{ grid-template-columns:repeat(3,1fr); } }
@media(max-width:760px){ .la-searchgrid{ grid-template-columns:1fr 1fr; } }
@media(max-width:480px){ .la-searchgrid{ grid-template-columns:1fr; } }
.la-searchcard{ position:relative; overflow:hidden; display:block; text-decoration:none;
  background:#fff; border:1px solid var(--la-line); border-radius:var(--la-r-lg);
  padding:18px 16px; transition:transform .2s, box-shadow .2s, border-color .2s; }
.la-searchcard::after{ content:""; position:absolute; right:-30px; top:-30px; width:90px; height:90px;
  border-radius:50%; background:var(--sc,var(--la-primary)); opacity:.06; transition:.25s; }
.la-searchcard:hover{ transform:translateY(-4px); box-shadow:var(--la-shadow);
  border-color:color-mix(in srgb, var(--sc,var(--la-primary)) 45%, var(--la-line)); }
.la-searchcard:hover::after{ opacity:.13; transform:scale(1.15); }
.la-searchcard__ic{ width:44px; height:44px; border-radius:12px; display:grid; place-items:center;
  font-size:18px; color:#fff; margin-bottom:12px; position:relative; z-index:1;
  background:linear-gradient(140deg, rgba(255,255,255,.22), rgba(0,0,0,.10)), var(--sc,var(--la-primary)); }
.la-searchcard h4{ font:700 15.5px var(--la-font-display); color:var(--la-ink); margin:0 0 6px;
  position:relative; z-index:1; }
.la-searchcard p{ font:400 13px/1.55 var(--la-font); color:var(--la-muted); margin:0 0 10px;
  position:relative; z-index:1; }
.la-searchcard__ex{ display:inline-block; font:600 11px var(--la-mono); color:var(--sc,var(--la-primary));
  background:var(--la-bg-tint); padding:4px 9px; border-radius:7px; position:relative; z-index:1; }

/* ===================== TIP LIST / ANATOMY / FEATURES ===================== */
.la-tiplist{ display:flex; flex-direction:column; gap:10px; margin:4px 0; }
.la-tipitem{ display:flex; gap:12px; align-items:flex-start; background:var(--la-bg-soft);
  border:1px solid var(--la-line); border-radius:var(--la-r); padding:13px 16px; }
.la-tipitem > i{ color:var(--la-mrna); font-size:13px; margin-top:3px; flex:none;
  background:rgba(16,185,129,.12); width:22px; height:22px; border-radius:50%; display:grid; place-items:center; }
.la-tipitem > div{ font:400 13.5px/1.6 var(--la-font); color:var(--la-ink-2); }
.la-tipitem b{ color:var(--la-ink); }
.la-tipitem code{ font:600 12.5px var(--la-mono); color:var(--la-primary-d);
  background:#fff; border:1px solid var(--la-line); padding:1px 6px; border-radius:5px; }

.la-anatomy{ display:flex; flex-direction:column; gap:0; margin:8px 0; border:1px solid var(--la-line);
  border-radius:var(--la-r-lg); overflow:hidden; }
.la-anatomy__row{ display:flex; gap:14px; align-items:flex-start; padding:16px 18px;
  background:#fff; font:400 14px/1.6 var(--la-font); color:var(--la-ink-2); }
.la-anatomy__row:nth-child(even){ background:var(--la-bg-soft); }
.la-anatomy__row b{ color:var(--la-ink); }
.la-anatomy__no{ flex:none; width:28px; height:28px; border-radius:9px; display:grid; place-items:center;
  font:800 14px var(--la-mono); color:#fff; background:linear-gradient(135deg,var(--la-primary),var(--la-primary-l)); }

.la-featlist{ display:flex; flex-direction:column; gap:10px; margin:6px 0; }
.la-feat{ display:flex; gap:13px; align-items:flex-start; padding:4px 2px;
  font:400 14px/1.6 var(--la-font); color:var(--la-ink-2); }
.la-feat > i{ color:var(--la-primary); font-size:15px; margin-top:2px; flex:none;
  width:30px; height:30px; border-radius:9px; display:grid; place-items:center; background:var(--la-bg-tint); }
.la-feat b{ color:var(--la-ink); }

/* ===================== BROWSE GRID ===================== */
.la-browsegrid{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:8px 0 4px; }
@media(max-width:780px){ .la-browsegrid{ grid-template-columns:1fr; } }
.la-bcat{ background:#fff; border:1px solid var(--la-line); border-radius:var(--la-r-lg);
  padding:20px 20px; border-top:3px solid var(--bc,var(--la-primary)); }
.la-bcat h4{ display:flex; align-items:center; gap:10px; font:700 16px var(--la-font-display);
  color:var(--la-ink); margin:0 0 12px; }
.la-bcat h4 i{ color:var(--bc,var(--la-primary)); font-size:15px; }
.la-bcat ul{ margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap:9px; }
.la-bcat li{ position:relative; padding-left:18px; font:400 13.5px/1.55 var(--la-font); color:var(--la-muted); }
.la-bcat li::before{ content:""; position:absolute; left:2px; top:8px; width:6px; height:6px;
  border-radius:50%; background:var(--bc,var(--la-primary)); opacity:.5; }
.la-bcat b{ color:var(--la-ink); font-weight:600; }

/* ===================== TOOLS OVERVIEW ===================== */
.la-toolconv{ display:grid; grid-template-columns:1fr 1fr; gap:14px; margin:8px 0 18px; }
@media(max-width:780px){ .la-toolconv{ grid-template-columns:1fr; } }
.la-toolconv__item{ display:flex; gap:13px; align-items:flex-start; background:var(--la-bg-soft);
  border:1px solid var(--la-line); border-radius:var(--la-r); padding:15px 16px;
  font:400 13.5px/1.6 var(--la-font); color:var(--la-ink-2); }
.la-toolconv__item b{ color:var(--la-ink); }
.la-toolconv__ic{ flex:none; width:38px; height:38px; border-radius:11px; display:grid; place-items:center;
  font-size:16px; color:#fff; background:linear-gradient(135deg,var(--la-primary),var(--la-cyan)); }

/* scope tags (universal vs single-cell) */
.la-scopekey{ display:flex; align-items:center; gap:8px; flex-wrap:wrap; margin:6px 0 0;
  font:400 13.5px var(--la-font); color:var(--la-muted); }
.la-scopetag{ display:inline-flex; align-items:center; gap:6px; font:700 10.5px/1 var(--la-mono);
  letter-spacing:.04em; text-transform:uppercase; padding:5px 10px; border-radius:999px; }
.la-scopetag i{ font-size:10px; }
.la-scopetag--uni{ color:var(--la-cyan-d); background:rgba(6,182,212,.12); border:1px solid rgba(6,182,212,.28); }
.la-scopetag--sc{ color:var(--la-lnc); background:rgba(124,58,237,.10); border:1px solid rgba(124,58,237,.26); }

/* ===================== TOOL BLOCKS ===================== */
.la-tool-sec{ padding:26px 0 14px; }
.la-tool-sec--sc{ position:relative; }
.la-toolhd{ display:flex; align-items:center; gap:16px; margin-bottom:14px; }
.la-toolhd__ic{ flex:none; width:54px; height:54px; border-radius:15px; display:grid; place-items:center;
  font-size:23px; color:#fff;
  background:linear-gradient(140deg, rgba(255,255,255,.20), rgba(0,0,0,.12)), var(--tc,var(--la-primary));
  box-shadow:0 10px 22px rgba(11,20,55,.18); }
.la-toolhd__txt{ min-width:0; }
.la-toolhd__no{ font:700 11px/1 var(--la-mono); letter-spacing:.10em; text-transform:uppercase;
  color:var(--la-muted); }
.la-toolhd__txt h3{ display:flex; align-items:center; gap:12px; flex-wrap:wrap; margin:5px 0 4px;
  font:800 22px/1.1 var(--la-font-display); color:var(--la-ink); letter-spacing:-.01em; }
.la-toolhd__cat{ font:600 11.5px var(--la-mono); letter-spacing:.03em; color:var(--la-primary);
  margin:0; }
.la-tool-desc{ font:400 15px/1.7 var(--la-font); color:var(--la-ink-2); max-width:105ch; margin:0 0 16px; }
.la-tool-desc em{ color:var(--la-ink); font-style:italic; }
.la-tool-desc sub{ font-size:.75em; }

/* I/O two-column */
.la-io{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:0 0 16px; }
@media(max-width:680px){ .la-io{ grid-template-columns:1fr; } }
.la-io__col{ border:1px solid var(--la-line); border-radius:var(--la-r); padding:15px 17px; background:#fff; }
.la-io__col--in{ background:var(--la-bg-soft); }
.la-io__col--out{ background:linear-gradient(135deg, rgba(6,182,212,.04), rgba(67,56,202,.04)); }
.la-io__col h5{ display:flex; align-items:center; gap:8px; margin:0 0 10px;
  font:700 12px/1 var(--la-mono); letter-spacing:.06em; text-transform:uppercase; color:var(--la-primary-d); }
.la-io__col--in h5 i{ color:var(--la-primary); }
.la-io__col--out h5 i{ color:var(--la-cyan-d); }
.la-io__col ul{ margin:0; padding:0; list-style:none; display:flex; flex-direction:column; gap:7px; }
.la-io__col li{ position:relative; padding-left:18px; font:400 13.5px/1.5 var(--la-font); color:var(--la-ink-2); }
.la-io__col li::before{ content:""; position:absolute; left:3px; top:7px; width:6px; height:6px;
  border-radius:2px; background:var(--la-primary); opacity:.55; }
.la-io__col--out li::before{ background:var(--la-cyan); }

/* launch row */
.la-tool-launch{ display:flex; align-items:center; gap:16px; flex-wrap:wrap; margin:0 0 4px; }
.la-tool-data{ display:inline-flex; align-items:center; gap:8px; font:600 12px var(--la-mono);
  color:var(--la-muted); }
.la-tool-data i{ color:var(--la-primary); }

/* single-cell divider */
.la-tooldiv{ display:flex; align-items:center; gap:16px; margin:38px 0 4px; }
.la-tooldiv__line{ flex:1; height:1px; background:linear-gradient(90deg,transparent,var(--la-lnc),transparent); opacity:.4; }
.la-tooldiv__label{ display:inline-flex; align-items:center; gap:9px; font:700 12px var(--la-mono);
  letter-spacing:.08em; text-transform:uppercase; color:var(--la-lnc);
  background:rgba(124,58,237,.08); border:1px solid rgba(124,58,237,.22); padding:8px 16px; border-radius:999px; }
.la-tooldiv__note{ font:400 14px/1.6 var(--la-font); color:var(--la-muted); max-width:105ch; margin:14px 0 0; }
.la-tool-sec--sc::before{ content:""; position:absolute; left:-24px; top:26px; bottom:14px; width:3px;
  border-radius:99px; background:linear-gradient(180deg,var(--la-lnc),transparent); opacity:.5; }
@media(max-width:1024px){ .la-tool-sec--sc::before{ left:-10px; } }

/* ===================== DETAIL HUB GRID ===================== */
.la-detailgrid{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin:8px 0 4px; }
@media(max-width:900px){ .la-detailgrid{ grid-template-columns:1fr 1fr; } }
@media(max-width:480px){ .la-detailgrid{ grid-template-columns:1fr; } }
.la-detailcard{ background:#fff; border:1px solid var(--la-line); border-radius:var(--la-r-lg);
  padding:18px 16px; transition:transform .2s, box-shadow .2s; }
.la-detailcard:hover{ transform:translateY(-3px); box-shadow:var(--la-shadow-sm); }
.la-detailcard__ic{ width:42px; height:42px; border-radius:12px; display:grid; place-items:center;
  font-size:17px; color:#fff; margin-bottom:12px;
  background:linear-gradient(135deg,var(--la-primary),var(--la-cyan)); }
.la-detailcard h4{ font:700 15px var(--la-font-display); color:var(--la-ink); margin:0 0 6px; }
.la-detailcard p{ font:400 13px/1.55 var(--la-font); color:var(--la-muted); margin:0; }

/* ===================== DOWNLOAD GUIDE ===================== */
.la-dlguide{ display:grid; grid-template-columns:1fr 1fr; gap:16px; margin:8px 0 4px; }
@media(max-width:680px){ .la-dlguide{ grid-template-columns:1fr; } }
.la-dlguide__card{ display:flex; flex-direction:column; align-items:flex-start;
  background:#fff; border:1px solid var(--la-line); border-radius:var(--la-r-lg); padding:22px 20px; }
.la-dlguide__ic{ width:48px; height:48px; border-radius:14px; display:grid; place-items:center;
  font-size:20px; color:#fff; margin-bottom:14px;
  background:linear-gradient(140deg, rgba(255,255,255,.20), rgba(0,0,0,.10)), var(--gc,var(--la-primary)); }
.la-dlguide__card h4{ font:700 17px var(--la-font-display); color:var(--la-ink); margin:0 0 8px; }
.la-dlguide__card p{ font:400 14px/1.65 var(--la-font); color:var(--la-ink-2); margin:0; }
.la-dlguide__card code{ font:600 12.5px var(--la-mono); color:var(--la-primary-d);
  background:var(--la-bg-tint); padding:1px 6px; border-radius:6px; }

.la-fmtnote{ background:var(--la-bg-soft); border:1px solid var(--la-line); border-radius:var(--la-r-lg);
  padding:18px 22px; margin-top:18px; }
.la-fmtnote h5{ display:flex; align-items:center; gap:9px; font:700 14px var(--la-font-display);
  color:var(--la-ink); margin:0 0 10px; }
.la-fmtnote h5 i{ color:var(--la-primary); }
.la-fmtnote ul{ margin:0; padding-left:18px; }
.la-fmtnote li{ font:400 13.5px/1.7 var(--la-font); color:var(--la-ink-2); margin-bottom:6px; }
.la-fmtnote code{ font:600 12.5px var(--la-mono); color:var(--la-primary-d);
  background:#fff; border:1px solid var(--la-line); padding:1px 6px; border-radius:6px; }
.la-fmtnote b{ color:var(--la-ink); }

/* ===================== REFERENCE TABLE ===================== */
.la-reftable-wrap{ overflow-x:auto; border:1px solid var(--la-line); border-radius:var(--la-r-lg);
  margin:8px 0 4px; background:#fff; }
.la-reftable{ width:100%; border-collapse:collapse; font:400 13.5px var(--la-font); }
.la-reftable thead th{ text-align:left; font:700 11px var(--la-mono); letter-spacing:.04em;
  text-transform:uppercase; color:var(--la-primary-d); background:var(--la-bg-tint);
  padding:13px 16px; border-bottom:2px solid var(--la-line); white-space:nowrap; }
.la-reftable tbody td{ padding:13px 16px; border-bottom:1px solid var(--la-line-2);
  color:var(--la-ink-2); line-height:1.55; vertical-align:top; }
.la-reftable tbody tr:last-child td{ border-bottom:0; }
.la-reftable tbody tr:hover{ background:var(--la-bg-soft); }
.la-reftable td:first-child{ white-space:nowrap; }
.la-reftable td code{ font:600 12.5px var(--la-mono); color:var(--la-primary-d);
  background:var(--la-bg-tint); padding:2px 7px; border-radius:6px; }
.la-reftable td:last-child{ text-align:right; white-space:nowrap; font-variant-numeric:tabular-nums; }
.la-reftable td:last-child b{ color:var(--la-ink); font:700 13.5px var(--la-mono); }

/* ===================== FAQ ACCORDION ===================== */
.la-faq{ display:flex; flex-direction:column; gap:10px; margin:6px 0; }
.la-faq__item{ border:1px solid var(--la-line); border-radius:var(--la-r); background:#fff;
  overflow:hidden; transition:border-color .2s, box-shadow .2s; }
.la-faq__item.is-open{ border-color:#9aa3d8;
  border-color:color-mix(in srgb, var(--la-primary) 40%, var(--la-line));
  box-shadow:var(--la-shadow-sm); }
.la-faq__q{ display:flex; align-items:center; justify-content:space-between; gap:16px; width:100%;
  text-align:left; cursor:pointer; border:0; background:transparent; padding:16px 20px;
  font:600 15px/1.4 var(--la-font); color:var(--la-ink); transition:.16s; }
.la-faq__q:hover{ color:var(--la-primary-d); background:var(--la-bg-soft); }
.la-faq__q > i{ flex:none; font-size:13px; color:var(--la-primary); transition:transform .25s; }
.la-faq__item.is-open .la-faq__q > i{ transform:rotate(180deg); }
.la-faq__a{ display:grid; grid-template-rows:0fr; transition:grid-template-rows .28s ease; }
.la-faq__item.is-open .la-faq__a{ grid-template-rows:1fr; }
.la-faq__a > p{ overflow:hidden; margin:0; padding:0 20px;
  font:400 14px/1.7 var(--la-font); color:var(--la-ink-2); }
.la-faq__item.is-open .la-faq__a > p{ padding:0 20px 18px; }

/* ===================== CONTACT & CITATION ===================== */
.la-contactgrid{ display:grid; grid-template-columns:1fr; gap:18px; margin:8px 0 4px; }
@media(max-width:780px){ .la-contactgrid{ grid-template-columns:1fr; } }
.la-contactcard{ border-radius:var(--la-r-lg); padding:24px 24px; border:1px solid var(--la-line); }
.la-contactcard--cite{ background:linear-gradient(135deg, rgba(67,56,202,.05), rgba(6,182,212,.04)); }
.la-contactcard--contact{ background:#fff; }
.la-contactcard h4{ display:flex; align-items:center; gap:10px; font:700 17px var(--la-font-display);
  color:var(--la-ink); margin:0 0 12px; }
.la-contactcard h4 i{ color:var(--la-primary); }
.la-contactcard p{ font:400 14px/1.65 var(--la-font); color:var(--la-ink-2); margin:0 0 12px; }
.la-citebox{ background:#fff; border:1px solid var(--la-line); border-left:3px solid var(--la-primary);
  border-radius:10px; padding:14px 16px; margin:4px 0 12px; }
.la-citebox__lab{ display:block; font:700 10.5px var(--la-mono); letter-spacing:.08em;
  text-transform:uppercase; color:var(--la-primary); margin-bottom:6px; }
.la-citebox p{ font:500 13.5px/1.6 var(--la-font); color:var(--la-ink); margin:0; }
.la-relnote{ font:400 13px var(--la-font); color:var(--la-muted); margin:0!important; }
.la-contactlist{ list-style:none; margin:0 0 16px; padding:0; display:flex; flex-direction:column; gap:9px; }
.la-contactlist li{ display:flex; gap:11px; align-items:flex-start; font:400 13.5px/1.55 var(--la-font);
  color:var(--la-ink-2); }
.la-contactlist i{ color:var(--la-primary); margin-top:3px; flex:none; width:18px; text-align:center; }
.la-contactcta{ display:flex; gap:10px; flex-wrap:wrap; }

/* ===================== BACK TO TOP ===================== */
.la-help-top{ position:fixed; right:26px; bottom:26px; z-index:60; width:46px; height:46px;
  border-radius:50%; border:0; cursor:pointer; color:#fff; font-size:16px;
  background:linear-gradient(135deg,var(--la-primary),var(--la-primary-l));
  box-shadow:0 10px 26px rgba(var(--la-primary-rgb),.36);
  opacity:0; visibility:hidden; transform:translateY(12px); transition:.25s; }
.la-help-top.is-show{ opacity:1; visibility:visible; transform:translateY(0); }
.la-help-top:hover{ transform:translateY(-3px); box-shadow:0 14px 32px rgba(var(--la-primary-rgb),.46); }

/* ===================== RESPONSIVE: collapse nav into a panel ===================== */
@media(max-width:1024px){
  .la-help-nav{ position:relative; top:0; }
  .la-help-nav__card{ max-height:none; }
  .la-help-nav__toggle{ display:grid; }
  .la-help-nav.is-collapsed .la-help-toc{ display:none; }
  .la-help-nav.is-collapsed .la-help-nav__toggle i{ transform:rotate(-90deg); }
}

/* ===================== REDUCED MOTION ===================== */
@media(prefers-reduced-motion:reduce){
  .la-step, .la-searchcard, .la-modcard, .la-detailcard, .la-help-top{ transition:none; }
  .la-step:hover, .la-searchcard:hover, .la-modcard:hover, .la-detailcard:hover{ transform:none; }
}