/* UniVoxx Help Center — static, self-contained. Palette from the UniVoxx mark: navy #0E1526, signal blue #0499E7. */
@font-face { font-family: "Inter"; src: url("/assets/fonts/inter.woff2") format("woff2"); font-weight: 100 900; font-display: swap; }
@font-face { font-family: "Bricolage Grotesque"; src: url("/assets/fonts/bricolage-grotesque.woff2") format("woff2"); font-weight: 200 800; font-display: swap; }

:root {
  --midnight: #07101f;
  --navy: #0e1526;
  --navy-2: #13203a;
  --line: #22324f;
  --signal: #0499e7;
  --cyan: #3fe0ff;
  --paper: #eaf2fb;
  --muted: #8da2bf;
  --ok: #3ddc97;
  /* Light by default (the visitor can switch to dark; see theme.js). */
  --bg: #f5f9fe;
  --surface: #ffffff;
  --raise: #eaf1fa;
  --line-c: #d6e1ef;
  --text: #0e1526;
  --text-dim: #4b5d78;
  --link: #0476b5;
  --code-bg: #eef4fb;
  --focus: #0499e7;
  --promo-bg: #0e1526;
  --promo-fg: #eaf2fb;
  --display: "Bricolage Grotesque", "Inter", system-ui, sans-serif;
  --body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 22px;
  --measure: 70ch;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --bg: var(--midnight); --surface: var(--navy); --raise: var(--navy-2); --line-c: var(--line); --text: var(--paper); --text-dim: var(--muted);
  --link: #6cc8ff; --code-bg: #0b1730; --focus: var(--cyan); --promo-bg: #0a2a4d; --promo-fg: #eaf2fb;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 88px; }
body { margin: 0; background: var(--bg); color: var(--text); font: 400 17px/1.65 var(--body); font-feature-settings: "cv11", "ss01"; }
img { max-width: 100%; height: auto; }
a { color: var(--link); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 4px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--signal); color: #fff; padding: 8px 14px; border-radius: var(--radius-s); z-index: 50; }
.skip:focus { left: 12px; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 82%, transparent); backdrop-filter: blur(14px); border-bottom: 1px solid color-mix(in srgb, var(--line-c) 60%, transparent); }
.top .wrap { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text); flex-shrink: 0; }
.brand img { height: 26px; width: auto; display: block; }
.brand span { font: 600 15px/1 var(--body); color: var(--text-dim); padding-left: 12px; border-left: 1px solid var(--line-c); }
.top nav { margin-left: auto; display: flex; align-items: center; gap: 6px; }
.top nav a { color: var(--text); text-decoration: none; font-weight: 500; font-size: 15px; padding: 8px 12px; border-radius: var(--radius-s); }
.top nav a:hover { background: var(--raise); }
.top nav a.cta { background: var(--signal); color: #fff; }
.top nav a.cta:hover { background: #0389d0; }
.top .mini-search { flex: 1; max-width: 360px; margin: 0 0 0 12px; }
.top nav button.theme { display: inline-grid; place-items: center; width: 38px; height: 38px; border: 1px solid var(--line-c); border-radius: 999px; background: var(--surface); color: var(--text); cursor: pointer; }
.top nav button.theme:hover { border-color: var(--signal); }
.top nav button.theme svg { width: 18px; height: 18px; }
.top nav button.theme[hidden] { display: none; }
:root[data-theme="dark"] .top nav button.theme .moon, :root:not([data-theme="dark"]) .top nav button.theme .sun { display: none; }
.logo.for-dark { display: none; }
:root[data-theme="dark"] .logo.for-dark { display: block; }
:root[data-theme="dark"] .logo.for-light { display: none; }
.promo { background: var(--promo-bg); color: var(--promo-fg); font-size: 14px; }
.promo .wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 4px 10px; padding-block: 8px; text-align: center; }
.promo a { color: #7fd3ff; font-weight: 600; }
.portal-note { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; margin: 0 0 36px; padding: 16px 20px; border: 1px solid var(--line-c); border-left: 3px solid var(--signal); border-radius: var(--radius-m); background: var(--surface); max-width: 980px; }
.portal-note p { margin: 0; max-width: 70ch; color: var(--text-dim); }
.portal-note strong { color: var(--text); }
.list-head + .portal-note { margin-top: 24px; }
.btn.small { padding: 9px 16px; font-size: 15px; background: var(--signal); color: #fff; }
.btn.small:hover { background: #0389d0; }
@media (max-width: 760px) { .top nav a:not(.cta), .brand span, .top .mini-search { display: none; } }
.brand img.logo { height: 26px; width: auto; }

/* ---------- hero ---------- */
.hero { position: relative; z-index: 2; padding: 96px 0 72px; border-bottom: 1px solid var(--line-c); isolation: isolate; }
.hero .rings-clip { position: absolute; inset: 0; overflow: hidden; z-index: -1; pointer-events: none; }
.hero .mark { color: var(--text); }
.hero .rings { position: absolute; left: 50%; top: 54%; width: 1500px; height: 1500px; translate: -50% -50%; pointer-events: none; }
.hero .rings circle { fill: none; stroke: var(--signal); stroke-width: 1.2; opacity: 0; transform-origin: 750px 750px; animation: ring 2.4s cubic-bezier(.2,.7,.2,1) forwards; }
.hero .rings circle:nth-child(1) { animation-delay: .05s; } .hero .rings circle:nth-child(2) { animation-delay: .25s; } .hero .rings circle:nth-child(3) { animation-delay: .45s; }
.hero .rings circle:nth-child(4) { animation-delay: .65s; } .hero .rings circle:nth-child(5) { animation-delay: .85s; }
@keyframes ring { from { opacity: .9; transform: scale(.12); stroke: var(--cyan); } to { opacity: var(--o, .22); transform: scale(1); } }
.hero.pulse .rings circle { animation: pulse 1.1s cubic-bezier(.2,.7,.2,1); }
@keyframes pulse { 0% { stroke: var(--cyan); opacity: .7; } 100% { opacity: var(--o, .22); } }
.hero .mark { width: 76px; height: auto; display: block; margin: 0 auto 26px; filter: drop-shadow(0 0 32px color-mix(in srgb, var(--signal) 55%, transparent)); }
.hero h1 { margin: 0 auto; max-width: 15ch; text-align: center; font: 800 clamp(42px, 7.4vw, 92px)/.98 var(--display); letter-spacing: -.035em; text-wrap: balance; }
.hero p.lede { margin: 22px auto 0; max-width: 46ch; text-align: center; color: var(--text-dim); font-size: clamp(17px, 2vw, 20px); text-wrap: pretty; }

/* ---------- search ---------- */
.search { position: relative; margin: 38px auto 0; max-width: 680px; }
.search label { position: absolute; left: -9999px; }
.search input { width: 100%; font: 500 19px/1 var(--body); color: var(--text); background: var(--surface); border: 1px solid var(--line-c); border-radius: 999px; padding: 21px 24px 21px 58px; box-shadow: 0 20px 60px -24px color-mix(in srgb, var(--signal) 70%, transparent); }
.search input::placeholder { color: var(--text-dim); }
.search input:focus { outline: none; border-color: var(--signal); box-shadow: 0 0 0 4px color-mix(in srgb, var(--signal) 30%, transparent), 0 20px 60px -24px color-mix(in srgb, var(--signal) 80%, transparent); }
.search svg.icon { position: absolute; left: 22px; top: 50%; translate: 0 -50%; width: 22px; height: 22px; color: var(--text-dim); pointer-events: none; }
.mini-search input { font-size: 15px; padding: 10px 14px 10px 38px; box-shadow: none; }
.mini-search svg.icon { left: 13px; width: 16px; height: 16px; }
.results { position: absolute; left: 0; right: 0; top: calc(100% + 10px); background: var(--surface); border: 1px solid var(--line-c); border-radius: var(--radius-m); box-shadow: 0 30px 80px -20px rgba(0, 0, 0, .55); overflow: hidden; z-index: 30; text-align: left; }
.results[hidden] { display: none; }
.results a { display: block; padding: 14px 18px; text-decoration: none; color: var(--text); border-top: 1px solid var(--line-c); }
.results a:first-child { border-top: 0; }
.results a:hover, .results a[aria-selected="true"] { background: var(--raise); }
.results strong { display: block; font-weight: 600; }
.results small { display: block; color: var(--text-dim); font-size: 14px; margin-top: 2px; }
.results mark { background: color-mix(in srgb, var(--cyan) 28%, transparent); color: inherit; border-radius: 3px; }
.results .none { padding: 16px 18px; color: var(--text-dim); }
.popular { margin: 22px auto 0; display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; max-width: 760px; }
.popular a { font-size: 15px; color: var(--text); text-decoration: none; border: 1px solid var(--line-c); padding: 7px 14px; border-radius: 999px; background: color-mix(in srgb, var(--surface) 70%, transparent); }
.popular a:hover { border-color: var(--signal); }

/* ---------- topics (an index, not a card grid) ---------- */
.section { padding: 80px 0; }
.section h2 { font: 700 clamp(30px, 3.6vw, 44px)/1.05 var(--display); letter-spacing: -.02em; margin: 0 0 8px; }
.section p.sub { color: var(--text-dim); margin: 0 0 40px; max-width: 60ch; }
.topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 0 56px; }
.topic { border-top: 1px solid var(--line-c); padding: 26px 0 30px; }
.topic h3 { display: flex; align-items: baseline; gap: 12px; margin: 0 0 12px; font: 700 23px/1.2 var(--display); }
.topic h3 a { color: var(--text); text-decoration: none; }
.topic h3 a:hover { color: var(--cyan); }
.topic h3 .count { font: 500 14px/1 var(--body); color: var(--signal); }
.topic ul { list-style: none; margin: 0; padding: 0; }
.topic li { padding: 5px 0; }
.topic li a { color: var(--text-dim); text-decoration: none; }
.topic li a:hover { color: var(--text); text-decoration: underline; }
.topic .more { display: inline-block; margin-top: 8px; font-weight: 600; font-size: 15px; }

/* ---------- switch band ---------- */
.switch { position: relative; overflow: hidden; background: linear-gradient(120deg, var(--navy) 0%, #0a2a4d 55%, #046aa6 130%); color: #fff; border-radius: var(--radius-l); padding: clamp(36px, 6vw, 72px); margin: 0 0 88px; }
.switch::after { content: ""; position: absolute; right: -180px; top: -180px; width: 560px; height: 560px; border-radius: 50%; border: 1px solid rgba(63, 224, 255, .25); box-shadow: 0 0 0 70px rgba(63, 224, 255, .05), 0 0 0 140px rgba(63, 224, 255, .035), 0 0 0 210px rgba(63, 224, 255, .02); pointer-events: none; }
.switch h2 { color: #fff; max-width: 17ch; font-size: clamp(34px, 4.6vw, 58px); line-height: 1; }
.switch .points { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; margin: 36px 0 40px; max-width: 980px; position: relative; z-index: 1; }
.switch .points h3 { margin: 0 0 6px; font: 700 19px/1.25 var(--display); color: #fff; }
.switch .points p { margin: 0; color: #c4d6ec; font-size: 16px; }
.switch .actions { display: flex; flex-wrap: wrap; gap: 12px; position: relative; z-index: 1; }
.btn { display: inline-flex; align-items: center; gap: 8px; font-weight: 600; font-size: 16px; text-decoration: none; padding: 14px 22px; border-radius: 999px; }
.btn.primary { background: #fff; color: var(--navy); }
.btn.primary:hover { background: var(--cyan); }
.btn.ghost { color: #fff; border: 1px solid rgba(255, 255, 255, .35); }
.btn.ghost:hover { border-color: #fff; }

/* ---------- article ---------- */
.crumbs { font-size: 15px; color: var(--text-dim); margin: 40px 0 18px; }
.crumbs a { color: var(--text-dim); }
.crumbs a:hover { color: var(--text); }
.article-head h1 { font: 800 clamp(36px, 5vw, 60px)/1.02 var(--display); letter-spacing: -.03em; margin: 0; max-width: 22ch; text-wrap: balance; }
.article-head .summary { font-size: 20px; color: var(--text-dim); margin: 18px 0 0; max-width: 60ch; }
.article-head .facts { display: flex; flex-wrap: wrap; gap: 8px 20px; margin: 22px 0 0; font-size: 15px; color: var(--text-dim); }
.layout { display: grid; grid-template-columns: minmax(0, 1fr) 260px; gap: 64px; margin-top: 48px; padding-bottom: 72px; }
@media (max-width: 980px) { .layout { grid-template-columns: 1fr; } .toc { display: none; } }
.toc { position: sticky; top: 96px; align-self: start; font-size: 15px; }
.toc h2 { font: 600 15px/1.2 var(--body); color: var(--text-dim); margin: 0 0 10px; }
.toc ol { list-style: none; margin: 0; padding: 0 0 0 14px; border-left: 2px solid var(--line-c); }
.toc li { padding: 4px 0; }
.toc li.l4 { padding-left: 14px; font-size: 14px; }
.toc a { color: var(--text-dim); text-decoration: none; }
.toc a:hover { color: var(--text); }
.prose { max-width: var(--measure); }
.prose > :first-child { margin-top: 0; }
.prose h2 { font: 700 30px/1.15 var(--display); letter-spacing: -.015em; margin: 52px 0 14px; }
.prose h3 { font: 700 23px/1.2 var(--display); margin: 40px 0 10px; }
.prose h4 { font: 650 19px/1.3 var(--body); margin: 30px 0 8px; }
.prose p, .prose ul, .prose ol, .prose blockquote, .prose table, .prose pre { margin: 0 0 18px; }
.prose ul, .prose ol { padding-left: 1.4em; }
.prose li { margin: 6px 0; }
.prose li::marker { color: var(--signal); font-weight: 700; }
.prose strong { font-weight: 650; }
.prose img { display: block; margin: 24px 0; border-radius: var(--radius-m); border: 1px solid var(--line-c); background: #fff; }
.prose figure { margin: 24px 0; }
.prose blockquote { border-left: 3px solid var(--signal); padding: 10px 18px; background: var(--raise); border-radius: 0 var(--radius-s) var(--radius-s) 0; }
.prose code { font: 500 .88em/1.4 ui-monospace, "SFMono-Regular", Consolas, monospace; background: var(--code-bg); padding: 2px 6px; border-radius: 5px; }
.prose pre { background: var(--code-bg); padding: 16px 18px; border-radius: var(--radius-m); overflow-x: auto; border: 1px solid var(--line-c); }
.prose pre code { background: none; padding: 0; }
.prose table { width: 100%; border-collapse: collapse; font-size: 16px; display: block; overflow-x: auto; }
.prose th, .prose td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line-c); }
.prose th { color: var(--text-dim); font-weight: 600; }
.prose hr { border: 0; border-top: 1px solid var(--line-c); margin: 36px 0; }

.help { margin-top: 56px; border: 1px solid var(--line-c); border-radius: var(--radius-l); padding: 28px 30px; background: linear-gradient(135deg, var(--surface), var(--raise)); max-width: var(--measure); }
.help h2 { font: 700 24px/1.2 var(--display); margin: 0 0 6px; }
.help p { margin: 0 0 16px; color: var(--text-dim); }
.help .ways { display: flex; flex-wrap: wrap; gap: 10px; }
.help .ways a { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; font-weight: 600; color: var(--text); border: 1px solid var(--line-c); border-radius: 999px; padding: 10px 18px; background: var(--bg); }
.help .ways a:hover { border-color: var(--signal); }
.related { margin-top: 56px; max-width: var(--measure); }
.related h2 { font: 700 22px/1.2 var(--display); margin: 0 0 12px; }
.related ul { list-style: none; padding: 0; margin: 0; }
.related li { border-top: 1px solid var(--line-c); }
.related a { display: block; padding: 14px 0; text-decoration: none; color: var(--text); font-weight: 500; }
.related a:hover { color: var(--cyan); }
.related small { display: block; color: var(--text-dim); font-weight: 400; font-size: 15px; }

/* ---------- category & all ---------- */
.list-head { padding: 56px 0 8px; }
.list-head h1 { font: 800 clamp(38px, 5vw, 64px)/1 var(--display); letter-spacing: -.03em; margin: 0 0 12px; }
.list-head p { color: var(--text-dim); margin: 0; max-width: 60ch; }
.index { list-style: none; padding: 0; margin: 36px 0 88px; max-width: 860px; }
.index li { border-top: 1px solid var(--line-c); }
.index a { display: block; padding: 20px 0; text-decoration: none; color: var(--text); }
.index a strong { display: block; font: 700 21px/1.25 var(--display); }
.index a span { display: block; color: var(--text-dim); margin-top: 4px; }
.index a:hover strong { color: var(--cyan); }
.index h2 { font: 600 15px/1 var(--body); color: var(--signal); margin: 40px 0 0; padding-bottom: 12px; }

.index.nested { margin: 0; }
.search-block { max-width: 680px; margin-top: 28px; }
.search-block.lost { margin: 28px 0 120px; }
.hero .rings .r1 { --o: .30; } .hero .rings .r2 { --o: .25; } .hero .rings .r3 { --o: .20; } .hero .rings .r4 { --o: .15; } .hero .rings .r5 { --o: .10; }

/* ---------- footer ---------- */
footer { border-top: 1px solid var(--line-c); padding: 44px 0 52px; color: var(--text-dim); font-size: 15px; }
footer .wrap { display: flex; justify-content: center; }
footer a { color: var(--text-dim); text-decoration: none; }
footer a:hover { color: var(--text); }
footer .copy { margin: 0; text-align: center; }

@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } .hero .rings circle { opacity: var(--o, .22); } }
@media print { .top, footer, .toc, .help, .related, .hero .rings { display: none !important; } body { background: #fff; color: #000; } }