/* hdfuryvrroom.com — v2: retail-box look (black, ice-cyan glow, violet accents) */
/* Palette sampled from the VRROOM retail box artwork. No text in content: (project rule). */
:root{
  --bg:#03050a;
  --panel:#0a101d;
  --panel2:#121b30;
  --text:#eaf2fb;
  --muted:#a9b7cd;
  --ice:#c8ecfa;
  --accent:#4fb8ff;
  --accent-soft:#8ed2ff;
  --accent2:#a878ff;
  --accent2-soft:#c4a2ff;
  --line:#1c2946;
  --line-soft:#243456;
  --ok:#5ad19a;
  --warn:#ffb35c;
  --glow-cyan:rgba(79,184,255,.22);
  --glow-violet:rgba(168,120,255,.18);
  --maxw:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  overflow-wrap:break-word;
  background:var(--bg);
  background-image:
    radial-gradient(1100px 520px at 110% -60px,rgba(168,120,255,.07),transparent 60%),
    radial-gradient(900px 480px at -10% 110%,rgba(79,184,255,.06),transparent 60%);
  background-attachment:fixed;
  color:var(--text);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-text-size-adjust:100%;
}
::selection{background:rgba(79,184,255,.35);color:#fff}
img{max-width:100%;height:auto}
a{color:var(--accent-soft)}
a:hover{color:#fff}
a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:3px}
.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#02060f;padding:.6rem 1rem;z-index:100;border-radius:0 0 8px 0;font-weight:700}
.skip-link:focus{left:0}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}

/* ---------- Header / nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(3,5,10,.88);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--glow-cyan) 30%,var(--glow-violet) 70%,transparent);
  pointer-events:none;
}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;padding:8px 0}
.brand img{display:block}
.brand-product{
  font-weight:700;letter-spacing:.18em;font-size:.95rem;
  background:linear-gradient(100deg,var(--ice),var(--accent-soft) 55%,var(--accent2-soft));
  -webkit-background-clip:text;background-clip:text;
  color:var(--accent-soft);
}
@supports (background-clip:text) or (-webkit-background-clip:text){
  .brand-product{color:transparent}
}
.nav-toggle{display:none}
.site-nav{margin-left:auto}
.site-nav ul{list-style:none;display:flex;flex-wrap:wrap;gap:2px;margin:0;padding:0}
.site-nav a{
  display:block;padding:10px 13px;text-decoration:none;color:var(--text);
  border-radius:8px;font-size:.97rem;white-space:nowrap;
  transition:background-color .15s ease,color .15s ease;
}
.site-nav a:hover{background:var(--panel2);color:#fff}
.site-nav a[aria-current="page"]{
  color:var(--ice);
  background:linear-gradient(180deg,rgba(79,184,255,.16),rgba(79,184,255,.06));
  box-shadow:inset 0 -2px 0 var(--accent);
}
.site-nav a.nav-shop{
  border:1px solid var(--accent);color:var(--accent-soft);margin-left:6px;
  box-shadow:0 0 14px rgba(79,184,255,.15);
}
.site-nav a.nav-shop:hover{
  background:linear-gradient(135deg,#5ec5ff,#3f8ff2);color:#02060f;
  box-shadow:0 0 22px rgba(79,184,255,.4);
}
/* language dropdown: native <details>, works without JS (CSP-safe) */
.lang-item{position:relative}
.lang-menu summary{
  list-style:none;cursor:pointer;display:block;padding:10px 16px 10px 13px;
  border:1px solid var(--line-soft);border-radius:8px;color:var(--muted);
  font-weight:600;letter-spacing:.06em;font-size:.97rem;white-space:nowrap;
  position:relative;margin-left:6px;
}
.lang-menu summary::-webkit-details-marker{display:none}
.lang-menu summary::after{
  content:"";position:absolute;right:6px;top:50%;margin-top:-1px;
  border-left:4px solid transparent;border-right:4px solid transparent;
  border-top:4px solid currentColor;
}
.lang-menu summary:hover{color:#fff;border-color:var(--accent);background:var(--panel2)}
.lang-menu[open] summary{color:var(--ice);border-color:var(--accent)}
.lang-menu ul{
  position:absolute;right:0;top:calc(100% + 6px);z-index:60;
  list-style:none;margin:0;padding:6px;min-width:160px;
  background:#070b14;border:1px solid var(--line-soft);border-radius:10px;
  box-shadow:0 12px 30px rgba(0,0,0,.5),0 0 18px rgba(79,184,255,.08);
  display:block;
}
.lang-menu ul li a{display:block;padding:9px 12px;white-space:nowrap;font-size:.95rem}

/* fixed background attachment is slow/buggy in mobile Safari: scroll it there */
@media (hover:none), (max-width:900px){
  body{background-attachment:scroll}
}

@media (max-width:900px){
  .nav-toggle{
    display:inline-flex;align-items:center;gap:8px;margin-left:auto;
    background:var(--panel2);color:var(--text);border:1px solid var(--line-soft);
    border-radius:8px;padding:9px 14px;font:inherit;cursor:pointer;
  }
  .nav-toggle .bars{display:inline-block;width:18px;height:2px;background:currentColor;position:relative}
  .nav-toggle .bars::before,.nav-toggle .bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor}
  .nav-toggle .bars::before{top:-6px}
  .nav-toggle .bars::after{top:6px}
  .site-nav{display:none;width:100%;margin:0}
  .site-nav.open{
    display:block;
    /* the 8-item menu can be taller than a phone screen while body scroll is
       locked: let the open menu scroll itself so every item stays reachable.
       vh fallback first for browsers without dvh support (older iOS Safari). */
    max-height:calc(100vh - 114px);
    max-height:calc(100dvh - 114px);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
    overscroll-behavior:contain;
  }
  .site-nav ul{flex-direction:column;padding:6px 0 14px}
  .site-nav a{padding:13px 10px;font-size:1.05rem}
  .site-nav a[aria-current="page"]{box-shadow:inset 3px 0 0 var(--accent)}
  .site-nav a.nav-shop{margin-left:0;text-align:center;margin-top:6px}
  /* in the mobile menu the language list expands inline instead of floating */
  .lang-item{position:static}
  .lang-menu summary{margin-left:0;text-align:center;margin-top:6px}
  .lang-menu ul{
    position:static;border:none;box-shadow:none;background:transparent;
    padding:0 0 0 14px;min-width:0;
  }
  .lang-menu ul li a{padding:11px 10px;font-size:1.02rem}
  /* Lock background scrolling with overflow only. Never collapse the body
     height: doing so while the user is scrolled down leaves the (sticky)
     header and open menu thousands of pixels off-screen - the page appears
     completely frozen. Without a height change the sticky header keeps the
     open menu in view and the reading position survives open/close. */
  body.nav-locked{overflow:hidden}
  /* while the menu is open, drop the expensive header blur (heavy on long
     pages in iOS Safari) and use a solid background instead */
  body.nav-locked .site-header{
    background:#03050a;
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
  }
}
@media (min-width:901px){
  .site-nav{display:block !important}
}
/* keep the 8-item nav on one row between the mobile breakpoint and full width */
@media (min-width:901px) and (max-width:1080px){
  .header-inner{gap:10px}
  .site-nav a{padding:10px 8px;font-size:.88rem}
  .site-nav a.nav-shop{margin-left:2px}
  .lang-menu summary{margin-left:2px;padding:10px 13px 10px 8px;font-size:.88rem}
  .brand-product{letter-spacing:.12em;font-size:.88rem}
}

/* ---------- Hero: the box's eclipse rings ---------- */
.hero{
  position:relative;
  padding:64px 0 48px;
  background:
    radial-gradient(circle 320px at 86% 8%,transparent 128px,rgba(200,236,250,.10) 142px,var(--glow-violet) 156px,rgba(79,184,255,.10) 190px,transparent 265px),
    radial-gradient(circle 260px at 4% 96%,transparent 104px,rgba(200,236,250,.08) 116px,var(--glow-cyan) 130px,rgba(168,120,255,.08) 162px,transparent 225px),
    radial-gradient(720px 360px at 85% 12%,rgba(120,90,220,.13),transparent 62%),
    radial-gradient(640px 320px at 8% 90%,rgba(79,184,255,.12),transparent 62%);
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.kicker{
  color:var(--accent-soft);font-weight:700;letter-spacing:.22em;text-transform:uppercase;
  font-size:.82rem;margin:0 0 12px;
}
h1{font-size:2.35rem;line-height:1.18;margin:.2em 0 .5em;letter-spacing:-.01em}
.hero h1{
  background:linear-gradient(100deg,#ffffff 10%,var(--ice) 45%,var(--accent-soft) 72%,var(--accent2-soft) 100%);
  -webkit-background-clip:text;background-clip:text;
}
@supports (background-clip:text) or (-webkit-background-clip:text){
  .hero h1{color:transparent}
}
.lead{font-size:1.13rem;color:var(--muted);max-width:56ch}
.hero-img img{
  filter:
    drop-shadow(0 18px 46px rgba(79,184,255,.22))
    drop-shadow(0 6px 60px rgba(168,120,255,.16));
}
@media (max-width:900px){
  .hero{padding:40px 0 30px}
  .hero-grid{grid-template-columns:1fr;gap:22px}
  h1{font-size:1.7rem}
}
@media (max-width:400px){
  h1{font-size:1.45rem}
  .lead{font-size:1.02rem}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-block;padding:13px 22px;border-radius:10px;text-decoration:none;
  font-weight:700;border:1px solid transparent;
  transition:box-shadow .15s ease,background-color .15s ease,color .15s ease,border-color .15s ease;
}
.btn-buy{
  background:linear-gradient(135deg,#5ec5ff,#3f8ff2);color:#02060f;
  box-shadow:0 4px 20px rgba(79,184,255,.35);
}
.btn-buy:hover{
  background:linear-gradient(135deg,#8ed2ff,#5ec5ff);color:#02060f;
  box-shadow:0 6px 28px rgba(79,184,255,.5);
}
.btn-ghost{border-color:var(--line-soft);color:var(--text)}
.btn-ghost:hover{
  border-color:var(--accent2);color:var(--accent2-soft);
  box-shadow:0 0 18px rgba(168,120,255,.22);
}
.btn-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:22px}

/* ---------- Sections ---------- */
main{display:block}
.section{padding:52px 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
h2{font-size:1.55rem;margin:0 0 .6em;letter-spacing:-.01em}
h2::after{
  content:"";display:block;width:56px;height:3px;border-radius:2px;margin-top:10px;
  background:linear-gradient(90deg,var(--accent),var(--accent2));
}
h3{font-size:1.15rem;margin:1.4em 0 .5em}
.section-intro{color:var(--muted);max-width:70ch;margin-top:0}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
@media (max-width:900px){.grid-3,.grid-2{grid-template-columns:1fr}}
.card{
  position:relative;
  background:linear-gradient(180deg,rgba(18,27,48,.65),rgba(10,16,29,.95));
  border:1px solid var(--line);border-radius:14px;
  padding:22px;overflow:hidden;
  transition:border-color .15s ease,box-shadow .15s ease,transform .15s ease;
}
.card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(142,210,255,.45),rgba(196,162,255,.35),transparent);
  opacity:.55;transition:opacity .15s ease;
}
.card:hover{
  border-color:var(--line-soft);
  box-shadow:0 10px 32px rgba(0,0,0,.45),0 0 24px rgba(79,184,255,.10);
  transform:translateY(-2px);
}
.card:hover::before{opacity:1}
.card h3{margin-top:0}
.card p{color:var(--muted);margin-bottom:0}
.card .card-link{display:inline-block;margin-top:12px;font-weight:600}

/* ---------- "Known for" section (homepage) ---------- */
.known-section{
  background:
    radial-gradient(560px 260px at 50% -80px,rgba(79,184,255,.08),transparent 65%);
}
.known-card{padding-top:18px}
.known-num{
  width:44px;height:44px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  margin:0 0 14px;
  font-size:1.25rem;font-weight:800;color:var(--ice);
  background:
    linear-gradient(var(--panel2),var(--panel2)) padding-box,
    linear-gradient(135deg,var(--accent),var(--accent2)) border-box;
  border:1px solid transparent;
  box-shadow:0 0 16px rgba(79,184,255,.22);
}
.known-card h3{margin-top:0}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto;margin:20px 0}
table{border-collapse:collapse;width:100%;font-size:.95rem}
caption{text-align:left;color:var(--muted);padding-bottom:10px;font-size:.9rem}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
thead th,th[scope="col"]{
  background:linear-gradient(180deg,#182642,#111a2e);color:#fff;
  border-bottom:2px solid rgba(79,184,255,.45);
}
th[scope="row"]{background:var(--panel);font-weight:600;white-space:nowrap}
tbody tr:nth-child(even) td{background:rgba(18,27,48,.35)}
td .yes{color:var(--ok);font-weight:700}
td .no{color:var(--muted)}

/* ---------- Steps / FAQ / buy block ---------- */
.steps{counter-reset:step;list-style:none;margin:20px 0;padding:0}
.steps li{
  position:relative;padding:0 0 18px 52px;counter-increment:step;
}
.steps li::before{
  content:counter(step);
  position:absolute;left:0;top:0;
  width:34px;height:34px;border-radius:50%;
  background:
    linear-gradient(var(--panel2),var(--panel2)) padding-box,
    linear-gradient(135deg,var(--accent),var(--accent2)) border-box;
  border:1px solid transparent;
  color:var(--ice);font-weight:700;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 12px rgba(79,184,255,.18);
}
.note{
  background:linear-gradient(180deg,rgba(18,27,48,.5),rgba(10,16,29,.9));
  border-left:4px solid;
  border-image:linear-gradient(180deg,var(--accent),var(--accent2)) 1;
  padding:14px 18px;margin:20px 0;color:var(--muted);
}
.buy-block{
  position:relative;
  border:1px solid transparent;border-radius:14px;
  background:
    radial-gradient(420px 200px at 90% 0%,rgba(168,120,255,.10),transparent 70%) padding-box,
    radial-gradient(420px 200px at 5% 100%,rgba(79,184,255,.10),transparent 70%) padding-box,
    linear-gradient(180deg,#121b30,#0a101d) padding-box,
    linear-gradient(120deg,rgba(79,184,255,.55),rgba(168,120,255,.45)) border-box;
  padding:26px;margin-top:34px;overflow:hidden;
  box-shadow:0 14px 44px rgba(0,0,0,.45),0 0 30px rgba(79,184,255,.08);
}
.buy-block h2,.buy-block h3{margin-top:0}
.buy-yesno{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:16px 0 6px}
@media (max-width:900px){.buy-yesno{grid-template-columns:1fr}}
.buy-yes,.buy-no{border-radius:10px;padding:16px 18px}
.buy-yes{background:rgba(90,209,154,.08);border:1px solid rgba(90,209,154,.4)}
.buy-no{background:rgba(255,179,92,.07);border:1px solid rgba(255,179,92,.35)}
.buy-yes h3,.buy-no h3{margin:0 0 8px}
.buy-yes ul,.buy-no ul{margin:0;padding-left:20px;color:var(--muted)}

/* ---------- Firmware release accordion (downloads page) ---------- */
details.fw{
  border:1px solid var(--line);border-radius:12px;margin-bottom:10px;
  background:linear-gradient(180deg,rgba(18,27,48,.5),rgba(10,16,29,.9));
  overflow:hidden;transition:border-color .15s ease,box-shadow .15s ease;
}
details.fw:hover{border-color:var(--line-soft)}
details.fw[open]{
  border-color:var(--accent);
  box-shadow:0 0 22px rgba(79,184,255,.12);
}
details.fw summary{
  display:flex;align-items:baseline;gap:8px 16px;flex-wrap:wrap;
  padding:14px 18px;cursor:pointer;list-style:none;
}
details.fw summary::-webkit-details-marker{display:none}
details.fw summary::before{
  content:"";width:9px;height:9px;flex:none;align-self:center;
  border-right:2px solid var(--accent-soft);border-bottom:2px solid var(--accent-soft);
  transform:rotate(-45deg);transition:transform .15s ease;margin-right:2px;
}
details.fw[open] summary::before{transform:rotate(45deg)}
.fw-badge{
  background:linear-gradient(135deg,#5ec5ff,#3f8ff2);color:#02060f;
  font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;
  padding:3px 9px;border-radius:99px;
}
.fw-ver{font-weight:700;color:var(--ice)}
.fw-date{color:var(--muted);font-size:.92rem}
.fw-file{margin-left:auto;color:var(--accent-soft);font-size:.9rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.fw-body{padding:2px 18px 18px;border-top:1px solid var(--line)}
.fw-body .fw-heading{color:var(--muted);font-size:.9rem;margin:14px 0 8px}
.fw-body ul{margin:0 0 6px;padding-left:20px}
.fw-body li{margin-bottom:6px;color:var(--muted)}
.fw-body .fw-note{color:var(--muted);font-size:.92rem;border-left:3px solid var(--line-soft);padding-left:12px}
.fw-body .fw-dl{margin-top:10px;padding:10px 18px;font-size:.95rem}
@media (max-width:600px){
  .fw-file{margin-left:0;flex-basis:100%;padding-left:21px}
}
@media (prefers-reduced-motion:reduce){
  details.fw summary::before{transition:none}
}

/* ---------- Breadcrumbs ---------- */
.breadcrumbs{padding:18px 0 0;font-size:.9rem;color:var(--muted)}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.breadcrumbs li+li::before{content:"\203A";margin-right:6px;color:var(--muted)}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs a:hover{color:var(--accent-soft)}
.breadcrumbs [aria-current="page"]{color:var(--text)}

/* ---------- Page header (subpages) ---------- */
.page-head{
  padding:34px 0 8px;
  background:
    radial-gradient(circle 210px at 94% -40px,transparent 84px,rgba(200,236,250,.07) 94px,var(--glow-violet) 106px,transparent 170px),
    radial-gradient(560px 220px at 92% 0%,rgba(120,90,220,.10),transparent 65%);
}
.page-head h1{margin-bottom:.3em}
.page-head .lead{margin-top:0}
/* note under the page head of translated manual pages: the English original leads */
.manual-note{
  margin:14px 0 0;max-width:70ch;font-size:.92rem;color:var(--muted);
  border-left:3px solid var(--accent);padding:8px 12px;
  background:rgba(79,184,255,.06);border-radius:0 8px 8px 0;
}
.manual-note a{color:var(--accent-soft)}

/* ---------- Downloads ---------- */
.dl-list{list-style:none;margin:20px 0;padding:0}
.dl-list li{
  display:flex;flex-wrap:wrap;gap:8px 18px;align-items:baseline;
  border:1px solid var(--line);border-radius:10px;
  background:linear-gradient(180deg,rgba(18,27,48,.5),rgba(10,16,29,.9));
  padding:14px 18px;margin-bottom:12px;
  transition:border-color .15s ease,box-shadow .15s ease;
}
.dl-list li:hover{border-color:var(--line-soft);box-shadow:0 0 18px rgba(79,184,255,.08)}
.dl-list .dl-name{font-weight:700}
.dl-list .dl-meta{color:var(--muted);font-size:.9rem}

/* ---------- Figures ---------- */
figure{margin:26px 0}
figcaption{color:var(--muted);font-size:.9rem;padding-top:8px}
.img-panel img{
  background:var(--bg);border:1px solid var(--line);border-radius:14px;
  box-shadow:0 12px 40px rgba(0,0,0,.5),0 0 30px rgba(79,184,255,.07);
}

/* ---------- Manual (original text and figures from the official manual) ---------- */
.manual-toc{list-style:none;margin:20px 0;padding:0;counter-reset:chap}
.manual-toc li{counter-increment:chap;margin-bottom:10px}
.manual-toc a{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;text-decoration:none;
  border:1px solid var(--line);border-radius:10px;padding:13px 16px;
  background:linear-gradient(180deg,rgba(18,27,48,.5),rgba(10,16,29,.9));
  color:var(--text);transition:border-color .15s ease,box-shadow .15s ease;
}
.manual-toc a::before{
  content:counter(chap,decimal-leading-zero);
  font-weight:700;color:var(--accent-soft);letter-spacing:.06em;
}
.manual-toc a:hover{border-color:var(--accent);box-shadow:0 0 18px rgba(79,184,255,.14);color:#fff}
.manual-toc .toc-pages{margin-left:auto;color:var(--muted);font-size:.85rem;white-space:nowrap}
.edid-list{
  list-style:none;margin:20px 0;padding:0;
  columns:2;column-gap:28px;
}
.edid-list li{
  border:1px solid var(--line);border-radius:8px;background:var(--panel);
  padding:7px 12px;margin-bottom:8px;font-size:.92rem;color:var(--muted);
  break-inside:avoid;
}
@media (max-width:700px){.edid-list{columns:1}}
figure.zoomable{margin:26px 0;text-align:center}
figure.zoomable a.zoom{display:inline-block;cursor:zoom-in;line-height:0;border-radius:12px}
figure.zoomable img{
  background:#fff;border:1px solid var(--line);border-radius:12px;
  box-shadow:0 10px 34px rgba(0,0,0,.45);
}
figure.zoomable figcaption{color:var(--muted);font-size:.9rem;padding-top:10px;line-height:1.5}
#zoombox{
  position:fixed;inset:0;z-index:200;cursor:zoom-out;
  background:rgba(2,4,9,.92);backdrop-filter:blur(4px);
  display:flex;align-items:center;justify-content:center;padding:20px;
}
#zoombox img{
  max-width:96vw;max-height:94vh;width:auto;height:auto;
  background:#fff;border-radius:8px;box-shadow:0 20px 80px rgba(0,0,0,.8);
}
.manual-pager{
  display:flex;flex-wrap:wrap;gap:10px 18px;justify-content:space-between;
  border-top:1px solid var(--line);margin-top:40px;padding-top:20px;
}
.manual-pager a{text-decoration:none;font-weight:600}
.manual-pager a:hover{text-decoration:underline}
code{
  background:var(--panel2);border:1px solid var(--line);border-radius:6px;
  padding:1px 6px;font-size:.92em;
}
pre.config-block{
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:16px 18px;overflow-x:auto;font-size:.8rem;line-height:1.5;
  white-space:pre;margin:20px 0;
}
pre.config-block code{background:none;border:0;padding:0;font-size:inherit}

/* ---------- Footer ---------- */
.site-footer{position:relative;border-top:1px solid var(--line);background:var(--panel);margin-top:40px}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,transparent,var(--glow-cyan) 30%,var(--glow-violet) 70%,transparent);
}
.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;padding:44px 0 26px}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:400px){.footer-grid{grid-template-columns:1fr}}
.site-footer h2{font-size:1rem;margin:0 0 12px;color:#fff;letter-spacing:.04em}
.site-footer h2::after{display:none}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:8px}
.site-footer a{color:var(--muted);text-decoration:none}
.site-footer a:hover{color:var(--accent-soft);text-decoration:underline}
.site-footer address{font-style:normal;color:var(--muted)}
.footer-legal{border-top:1px solid var(--line);padding:18px 0 26px;color:var(--muted);font-size:.85rem}
.footer-legal p{margin:.4em 0}

/* ---------- 404 ---------- */
.error-page{
  padding:80px 0;text-align:center;
  background:
    radial-gradient(circle 260px at 50% 0%,transparent 104px,rgba(200,236,250,.07) 116px,var(--glow-cyan) 130px,transparent 200px);
}
.error-page h1{font-size:2rem}
.error-page .lead{margin-left:auto;margin-right:auto}
.error-page .btn-row{justify-content:center}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn,.card,.card::before,.site-nav a,.dl-list li{transition:none}
  .card:hover{transform:none}
}