/* =============================================================================
   fromscratch — help center (backend-rendered, app/templates/help/).
   Served at /blog-static/help.css?v=<hash>, loaded after blog.css (which holds
   the prose, the FAQ accordion and the TOC). Only the Mat role tokens (--ui-*)
   and color-mix() tints: right in both themes (html[data-theme=dark|light]).
   Sections: shell · top bar · search · sidebar · page head · prose extras
   (callouts, prompt cards) · feedback · prev/next/related · home · mobile.
   ============================================================================= */

.h-root { --h-top: 64px; --h-side: 264px; --h-rail: 220px; padding-bottom: 72px; }
.h-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.h-ico { display: inline-block; flex: none; vertical-align: -0.15em; }
.h-hp { position: absolute; left: -9999px; width: 1px; height: 1px; opacity: 0; }
html.h-lock { overflow: hidden; }

/* —— Top bar ——————————————————————————————————————————————————————————— */
.h-topbar { border-bottom: 1px solid var(--ui-line); background: var(--ui-canvas); }
.h-topbar-in {
  display: flex; align-items: center; gap: 12px;
  max-width: 90rem; margin: 0 auto; padding: 10px 16px; box-sizing: border-box;
}
@media (min-width: 640px) { .h-topbar-in { padding: 12px 24px; } }
.h-brand {
  display: inline-flex; align-items: center; gap: 8px; flex: none;
  color: var(--ui-fg); font-size: 15px; font-weight: 600; letter-spacing: -0.01em; text-decoration: none;
}
.h-brand .h-ico { color: var(--ui-accent-text); }
.h-topbar .h-search { flex: 1; max-width: 30rem; margin-left: auto; }
.h-iconbtn, .h-menu-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; flex: none;
  height: 36px; min-width: 36px; padding: 0 10px; box-sizing: border-box;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-md, 8px);
  background: var(--ui-card); color: var(--ui-fg-2); font: inherit; font-size: 14px; cursor: pointer;
}
.h-iconbtn:hover, .h-menu-btn:hover { background: var(--ui-hover); color: var(--ui-fg); }
.h-iconbtn:focus-visible, .h-menu-btn:focus-visible, .h-copylink:focus-visible, .h-fb button:focus-visible,
.h-nav a:focus-visible, .h-nav summary:focus-visible, .h-card-link:focus-visible, .h-steps a:focus-visible,
.h-prevnext a:focus-visible, .h-related a:focus-visible, .h-results a:focus-visible, .h-prompt-copy:focus-visible {
  outline: 2px solid var(--ui-focus); outline-offset: 2px;
}
.h-theme-sun, .h-theme-moon { display: inline-flex; }
html[data-theme="dark"] .h-theme-moon, html:not([data-theme="dark"]) .h-theme-sun { display: none; }
.h-menu-btn { display: none; }
.h-home .h-brand + .h-iconbtn { margin-left: auto; }
.h-topbar-in > .h-theme:nth-child(2) { margin-left: auto; }

/* —— Search ——————————————————————————————————————————————————————————— */
.h-search { position: relative; display: flex; align-items: center; min-width: 0; }
.h-search-ico { position: absolute; left: 12px; display: inline-flex; color: var(--ui-fg-3); pointer-events: none; }
.h-search input[type="search"] {
  width: 100%; height: 38px; box-sizing: border-box; padding: 0 12px 0 38px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-md, 8px);
  background: var(--ui-panel); color: var(--ui-fg); font: inherit; font-size: 14.5px; outline: none;
  -webkit-appearance: none; appearance: none;
}
.h-search input[type="search"]::placeholder { color: var(--ui-fg-3); }
.h-search input[type="search"]:focus { border-color: var(--ui-line-strong); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ui-focus) 25%, transparent); }
.h-search--big { max-width: 38rem; margin: 28px auto 0; }
.h-search--big input[type="search"] { height: 52px; padding-left: 46px; font-size: 16px; border-radius: var(--ui-radius-lg, 12px); background: var(--ui-card); }
.h-search--big .h-search-ico { left: 16px; }
.h-results {
  position: absolute; top: calc(100% + 6px); left: 0; right: 0; z-index: 40;
  max-height: min(70vh, 30rem); overflow-y: auto; padding: 6px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px);
  background: var(--ui-card); box-shadow: var(--ui-shadow-pop, 0 12px 32px color-mix(in srgb, var(--ui-fg) 14%, transparent));
  text-align: left;
}
.h-results a {
  display: flex; flex-direction: column; gap: 2px; padding: 10px 12px;
  border-radius: var(--ui-radius-md, 8px); color: var(--ui-fg); text-decoration: none;
}
.h-results a:hover, .h-results a[aria-selected="true"] { background: var(--ui-hover); }
.h-r-sec { font-size: 11px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ui-fg-3); }
.h-r-title { font-size: 14.5px; font-weight: 600; }
.h-r-snip { font-size: 13px; line-height: 1.45; color: var(--ui-fg-2); }
.h-r-none { margin: 0; padding: 12px; font-size: 14px; color: var(--ui-fg-2); }

/* —— Shell ———————————————————————————————————————————————————————————— */
.h-shell {
  display: grid; grid-template-columns: minmax(0, 1fr);
  max-width: 90rem; margin: 0 auto; padding: 0 16px; box-sizing: border-box;
}
@media (min-width: 640px) { .h-shell { padding: 0 24px; } }
@media (min-width: 960px) {
  .h-shell { grid-template-columns: var(--h-side) minmax(0, 1fr); gap: 48px; }
}
@media (min-width: 1240px) {
  .h-shell--rail { grid-template-columns: var(--h-side) minmax(0, 1fr) var(--h-rail); }
}
.h-main { min-width: 0; max-width: 46rem; padding-top: 28px; }
@media (min-width: 1240px) { .h-shell--rail .h-main { margin: 0 auto; width: 100%; } }
.h-rail { display: none; }
@media (min-width: 1240px) { .h-rail { display: block; padding-top: 28px; } .h-rail .b-toc { top: calc(var(--h-top) + 24px); } }
.h-toc-m { margin-top: 20px; }
@media (min-width: 1240px) { .h-shell--rail .h-toc-m { display: none; } }
@media (min-width: 1100px) and (max-width: 1239px) { .h-toc-m { display: block; } }

/* —— Sidebar ——————————————————————————————————————————————————————————— */
.h-nav {
  position: sticky; top: var(--h-top); align-self: start;
  max-height: calc(100vh - var(--h-top)); overflow-y: auto; box-sizing: border-box;
  padding: 24px 4px 40px 0; font-size: 14px;
}
.h-nav-head { display: flex; align-items: center; justify-content: space-between; margin: 0 0 12px; }
.h-nav-home { font-size: 12px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ui-fg-2); text-decoration: none; }
.h-nav-home:hover { color: var(--ui-fg); }
.h-nav-close { display: none; }
.h-nav-sec { margin: 0 0 2px; }
.h-nav-sec summary {
  display: flex; align-items: center; gap: 8px; padding: 7px 8px; list-style: none; cursor: pointer;
  border-radius: var(--ui-radius-md, 8px); color: var(--ui-fg); font-weight: 600;
}
.h-nav-sec summary::-webkit-details-marker { display: none; }
.h-nav-sec summary:hover { background: var(--ui-hover); }
.h-nav-sec-ico { display: inline-flex; color: var(--ui-fg-2); }
.h-nav-sec-title { flex: 1; min-width: 0; }
.h-nav-chev { color: var(--ui-fg-3); transition: transform 0.15s ease; }
.h-nav-sec[open] .h-nav-chev { transform: rotate(90deg); }
.h-nav ul { margin: 2px 0 10px 15px; padding: 0 0 0 10px; list-style: none; border-left: 1px solid var(--ui-line); }
.h-nav li a {
  display: block; margin: 1px 0; padding: 6px 10px; border-radius: var(--ui-radius-md, 8px);
  color: var(--ui-fg-2); line-height: 1.35; text-decoration: none;
}
.h-nav li a:hover { color: var(--ui-fg); background: var(--ui-hover); }
.h-nav li a[aria-current="page"] { color: var(--ui-accent-text); background: var(--ui-accent-soft); font-weight: 500; }
.h-backdrop { display: none; }

/* —— Page head ———————————————————————————————————————————————————————— */
.h-crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 4px; font-size: 13.5px; color: var(--ui-fg-2); }
.h-crumbs a { color: var(--ui-fg-2); text-decoration: none; }
.h-crumbs a:hover { color: var(--ui-fg); }
.h-crumbs > span[aria-hidden] { display: inline-flex; color: var(--ui-fg-3); }
.h-crumbs [aria-current] { color: var(--ui-fg); }
.h-head { margin: 18px 0 0; }
.h-head-ico {
  display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; margin-bottom: 16px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px); background: var(--ui-panel); color: var(--ui-accent-text);
}
.h-title { margin: 0; font-size: clamp(1.75rem, 3.6vw, 2.375rem); line-height: 1.15; font-weight: 600; letter-spacing: -0.025em; color: var(--ui-fg); }
.h-summary { margin: 12px 0 0; font-size: 1.125rem; line-height: 1.55; color: var(--ui-fg-2); }
.h-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; margin: 18px 0 0; font-size: 13.5px; color: var(--ui-fg-2); }
.h-copylink {
  display: inline-flex; align-items: center; height: 30px; margin-left: auto; padding: 0 10px;
  border: 1px solid var(--ui-line); border-radius: 999px; background: var(--ui-card);
  color: var(--ui-fg-2); font: inherit; font-size: 13px; cursor: pointer;
}
.h-copylink:hover { background: var(--ui-hover); color: var(--ui-fg); }
.h-copy-idle, .h-copy-done { display: inline-flex; align-items: center; gap: 6px; }
.h-copy-done { display: none; color: var(--ui-success); }
.is-done .h-copy-idle { display: none; }
.is-done .h-copy-done { display: inline-flex; }

/* —— Prose extras: callouts + example prompts ————————————————————————— */
.h-prose { margin-top: 32px; font-size: 1.0625rem; }
.blog .h-prose h2 { font-size: 1.5rem; }
.blog .b-prose blockquote.h-callout {
  --h-c: var(--ui-accent);
  padding: 14px 16px; border: 1px solid color-mix(in srgb, var(--h-c) 32%, var(--ui-line));
  border-left: 3px solid var(--h-c); border-radius: var(--ui-radius-md, 8px);
  background: color-mix(in srgb, var(--h-c) 7%, var(--ui-canvas)); font-size: 0.96em; line-height: 1.6;
}
.blog .b-prose blockquote.h-callout--tip { --h-c: var(--ui-success); }
.blog .b-prose blockquote.h-callout--warning { --h-c: var(--ui-warning); }
.blog .b-prose .h-callout > * + * { margin-top: 0.5em; }
.blog .b-prose .h-callout-label {
  display: flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600;
  letter-spacing: 0.06em; text-transform: uppercase; color: color-mix(in srgb, var(--h-c) 70%, var(--ui-fg));
}
.blog .b-prose .h-callout-label + p { margin-top: 0.35em; }
.blog .b-prose .h-prompt { margin-top: 1.4em; border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px); background: var(--ui-panel); overflow: hidden; }
.blog .b-prose .h-prompt figcaption {
  display: flex; align-items: center; gap: 8px; padding: 8px 8px 8px 14px; border-bottom: 1px solid var(--ui-line);
  font-size: 12px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ui-fg-2);
}
.h-prompt-copy {
  display: inline-flex; align-items: center; gap: 6px; height: 28px; margin-left: auto; padding: 0 10px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-sm, 6px); background: var(--ui-card);
  color: var(--ui-fg-2); font: inherit; font-size: 12px; font-weight: 500; letter-spacing: 0; text-transform: none; cursor: pointer;
}
.h-prompt-copy:hover { color: var(--ui-fg); background: var(--ui-hover); }
.h-prompt-copy .h-copy-done { color: var(--ui-success); }
.is-done.h-prompt-copy .h-prompt-copy-txt { display: none; }
.blog .b-prose .h-prompt pre { margin: 0; padding: 14px 16px; border: 0; border-radius: 0; background: transparent; white-space: pre-wrap; }
.blog .b-prose .h-prompt code { font-family: var(--font-site, ui-sans-serif, system-ui, sans-serif); font-size: 15px; line-height: 1.6; color: var(--ui-fg); }

/* —— Feedback ————————————————————————————————————————————————————————— */
.h-fb { margin: 48px 0 0; padding: 18px 20px; border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px); background: var(--ui-panel); }
.h-fb-q { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; }
.h-fb-title { margin: 0; font-size: 15px; font-weight: 600; color: var(--ui-fg); }
.h-fb-btns { display: flex; gap: 8px; }
.h-fb-btns button {
  display: inline-flex; align-items: center; gap: 6px; height: 34px; padding: 0 14px;
  border: 1px solid var(--ui-line); border-radius: 999px; background: var(--ui-card); color: var(--ui-fg); font: inherit; font-size: 14px; cursor: pointer;
}
.h-fb-btns button:hover { background: var(--ui-hover); }
.h-fb-btns button[aria-pressed="true"] { border-color: var(--ui-accent); background: var(--ui-accent-soft); color: var(--ui-accent-text); }
.h-fb-form { margin: 16px 0 0; }
.h-fb-form fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.h-fb-form legend { margin: 0 0 10px; padding: 0; font-size: 14px; color: var(--ui-fg-2); }
.h-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.h-chip { position: relative; cursor: pointer; }
.h-chip input { position: absolute; opacity: 0; width: 1px; height: 1px; }
.h-chip span {
  display: inline-flex; align-items: center; height: 32px; padding: 0 12px;
  border: 1px solid var(--ui-line); border-radius: 999px; background: var(--ui-card); color: var(--ui-fg-2); font-size: 13.5px;
}
.h-chip:hover span { color: var(--ui-fg); background: var(--ui-hover); }
.h-chip input:checked + span { border-color: var(--ui-accent); background: var(--ui-accent-soft); color: var(--ui-accent-text); }
.h-chip input:focus-visible + span { outline: 2px solid var(--ui-focus); outline-offset: 2px; }
.h-fb-form textarea {
  display: block; width: 100%; box-sizing: border-box; margin: 14px 0 12px; padding: 10px 12px; resize: vertical;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-md, 8px); background: var(--ui-card); color: var(--ui-fg); font: inherit; font-size: 14px;
}
.h-fb-form textarea:focus { outline: none; border-color: var(--ui-line-strong); }
.h-fb-thanks { display: flex; align-items: center; gap: 8px; margin: 0; font-size: 15px; font-weight: 500; color: var(--ui-fg); }
.h-fb-thanks .h-ico { color: var(--ui-success); }
.h-fb-thanks[hidden], .h-fb-err[hidden], .h-fb-q[hidden], .h-fb-form[hidden], .h-fb fieldset[hidden] { display: none; }
.h-fb-err { margin: 10px 0 0; font-size: 14px; color: var(--ui-danger); }

/* —— Prev / next · related · still stuck ——————————————————————————————— */
.h-prevnext { display: grid; grid-template-columns: minmax(0, 1fr); gap: 12px; margin: 32px 0 0; }
@media (min-width: 640px) { .h-prevnext { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.h-prevnext a {
  display: flex; flex-direction: column; gap: 6px; padding: 14px 16px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px); color: var(--ui-fg); text-decoration: none;
}
.h-prevnext a:hover { border-color: var(--ui-line-strong); background: var(--ui-panel); }
.h-pn-next { text-align: right; align-items: flex-end; }
.h-pn-label { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ui-fg-2); }
.h-pn-title { font-size: 15px; font-weight: 500; line-height: 1.4; }
.h-related { margin: 40px 0 0; }
.h-related h2, .h-block-head h2 { margin: 0 0 14px; font-size: 1.125rem; font-weight: 600; letter-spacing: -0.01em; color: var(--ui-fg); }
.h-related ul { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; }
.h-related a {
  display: flex; flex-direction: column; gap: 3px; padding: 12px 14px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-md, 8px); color: var(--ui-fg); text-decoration: none;
}
.h-related a:hover { background: var(--ui-panel); border-color: var(--ui-line-strong); }
.h-rel-title { font-size: 14.5px; font-weight: 500; }
.h-rel-desc { font-size: 13px; line-height: 1.45; color: var(--ui-fg-2); }
.h-stuck {
  display: flex; flex-direction: column; gap: 14px; margin: 40px 0 0; padding: 18px 20px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px);
}
@media (min-width: 640px) { .h-stuck { flex-direction: row; align-items: center; justify-content: space-between; } }
.h-stuck-title { margin: 0; font-size: 15px; font-weight: 600; color: var(--ui-fg); }
.h-stuck-sub { margin: 4px 0 0; font-size: 14px; color: var(--ui-fg-2); }
.h-empty { margin: 24px 0 0; color: var(--ui-fg-2); }
.h-hits { display: grid; gap: 8px; margin: 24px 0 0; padding: 0; list-style: none; }
.h-hits a { display: flex; flex-direction: column; gap: 3px; padding: 14px 16px; border: 1px solid var(--ui-line); border-radius: var(--ui-radius-md, 8px); color: var(--ui-fg); text-decoration: none; }
.h-hits a:hover { background: var(--ui-panel); border-color: var(--ui-line-strong); }
.h-hit-title { font-size: 16px; font-weight: 600; }
.h-main > .h-search--big { margin: 24px 0 0; }

/* —— Ordered article lists (home « Start here », section pages) —————————— */
.h-steps { display: grid; gap: 8px; margin: 0; padding: 0; list-style: none; counter-reset: none; }
.h-steps--section { margin-top: 28px; }
.h-steps a {
  display: flex; align-items: center; gap: 14px; padding: 14px 16px;
  border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px); background: var(--ui-card);
  color: var(--ui-fg); text-decoration: none; transition: border-color 0.15s ease, background-color 0.15s ease;
}
.h-steps a:hover { border-color: var(--ui-line-strong); background: var(--ui-panel); }
.h-step-n {
  display: inline-flex; align-items: center; justify-content: center; flex: none; width: 28px; height: 28px;
  border-radius: 999px; background: var(--ui-accent-soft); color: var(--ui-accent-text); font-size: 13px; font-weight: 600;
}
.h-step-body { display: flex; flex-direction: column; gap: 2px; flex: 1; min-width: 0; }
.h-step-title { font-size: 15px; font-weight: 600; }
.h-step-desc { font-size: 13.5px; line-height: 1.45; color: var(--ui-fg-2); }
.h-step-arrow { color: var(--ui-fg-3); }
.h-steps a:hover .h-step-arrow { color: var(--ui-fg); }

/* —— Home ———————————————————————————————————————————————————————————— */
.h-home { max-width: 72rem; margin: 0 auto; padding: 0 16px; box-sizing: border-box; }
@media (min-width: 640px) { .h-home { padding: 0 24px; } }
.h-hero { padding: 56px 0 40px; text-align: center; }
.h-hero h1 { margin: 0; font-size: clamp(2rem, 5vw, 3rem); line-height: 1.1; font-weight: 600; letter-spacing: -0.03em; color: var(--ui-fg); }
.h-hero-sub { max-width: 36rem; margin: 14px auto 0; font-size: 1.125rem; line-height: 1.55; color: var(--ui-fg-2); }
.h-hero-hint { margin: 12px 0 0; font-size: 13px; color: var(--ui-fg-3); }
.h-start, .h-topics { margin: 40px 0 0; }
.h-block-head { margin: 0 0 16px; }
.h-block-head p { margin: -6px 0 0; font-size: 14.5px; color: var(--ui-fg-2); }
.h-start .h-steps { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 800px) { .h-start .h-steps { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.h-cards { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
@media (min-width: 640px) { .h-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1000px) { .h-cards { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.h-card { display: flex; flex-direction: column; border: 1px solid var(--ui-line); border-radius: var(--ui-radius-lg, 12px); background: var(--ui-card); }
.h-card-link { display: flex; flex-direction: column; gap: 8px; padding: 20px 20px 14px; color: var(--ui-fg); text-decoration: none; border-radius: var(--ui-radius-lg, 12px) var(--ui-radius-lg, 12px) 0 0; }
.h-card-link:hover h3 { text-decoration: underline; text-underline-offset: 3px; text-decoration-thickness: 1px; }
.h-card-ico {
  display: inline-flex; align-items: center; justify-content: center; width: 40px; height: 40px;
  border-radius: var(--ui-radius-md, 8px); background: var(--ui-accent-soft); color: var(--ui-accent-text);
}
.h-card h3 { margin: 6px 0 0; font-size: 1.0625rem; font-weight: 600; letter-spacing: -0.01em; }
.h-card p { margin: 0; font-size: 14px; line-height: 1.5; color: var(--ui-fg-2); }
.h-card-count { font-size: 12.5px; color: var(--ui-fg-3); }
.h-card-list { margin: 0; padding: 10px 20px 18px; list-style: none; border-top: 1px solid var(--ui-line); font-size: 14px; }
.h-card-list li + li { margin-top: 6px; }
.h-card-list a { color: var(--ui-fg-2); text-decoration: none; }
.h-card-list a:hover { color: var(--ui-fg); text-decoration: underline; text-underline-offset: 3px; }
.h-home .h-stuck { margin-top: 48px; }

/* —— Mobile: the sidebar becomes a drawer behind « Menu » ————————————————— */
@media (max-width: 959px) {
  .h-menu-btn { display: inline-flex; }
  .h-brand span { display: none; }
  .h-nav {
    position: fixed; top: 0; bottom: 0; left: 0; z-index: 80; width: min(320px, 86vw); max-height: none;
    padding: 16px 16px 40px; background: var(--ui-canvas); border-right: 1px solid var(--ui-line);
    transform: translateX(-102%); transition: transform 0.2s ease; visibility: hidden;
  }
  .h-nav.is-open { transform: none; visibility: visible; }
  .h-nav-close { display: inline-flex; padding: 6px; border: 0; background: none; color: var(--ui-fg-2); cursor: pointer; }
  .h-backdrop:not([hidden]) { display: block; position: fixed; inset: 0; z-index: 70; background: var(--ui-overlay, color-mix(in srgb, var(--ui-fg) 35%, transparent)); }
  .h-main { padding-top: 20px; }
}
@media (max-width: 479px) {
  .h-copylink { margin-left: 0; }
  .h-fb { padding: 16px; }
}
@media (prefers-reduced-motion: reduce) { .h-nav, .h-nav-chev { transition: none; } }