/* VetteALDL design tokens - "Amber Cluster" (see docs/design-system.md) */
:root {
  --bg-0: #07080A; --bg-1: #0D0F12; --bg-2: #15181D; --bg-3: #1E2228;
  --line: #2A2F37; --line-strong: #3A404A;
  --text-0: #F2EEE6; --text-1: #B9B2A6; --text-2: #8A8377;
  --amber: #FF8F1A; --amber-hi: #FFB25C; --amber-lo: #C96A00;
  --amber-glow: rgb(255 143 26 / .35); --amber-tint: rgb(255 143 26 / .10);
  --seg-on: #FF9A2E; --seg-off: rgb(255 143 26 / .08);
  --redline: #E5322B;
  --ok: #34D17A; --warn: #F5D90A; --fail: #FF4D42; --info: #4FB8F5;
  --ok-tint: rgb(52 209 122 / .12); --warn-tint: rgb(245 217 10 / .12);
  --fail-tint: rgb(255 77 66 / .12); --info-tint: rgb(79 184 245 / .12);
  --on-amber: #0B0B0B;

  --font-ui: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Cascadia Mono", "Cascadia Code", Consolas, ui-monospace, "SF Mono", Menlo, monospace;
  --fs-xs: 12px; --fs-sm: 13px; --fs-md: 14px; --fs-lg: 16px; --fs-xl: 20px; --fs-2xl: 24px; --fs-3xl: 32px;

  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px; --sp-5: 24px; --sp-6: 32px; --sp-7: 48px;
  --r-1: 4px; --r-2: 8px; --r-3: 12px; --r-4: 20px;
  --elev-1: inset 0 1px 0 rgb(255 255 255 / .04), 0 0 0 1px var(--line);
  --elev-2: 0 12px 32px rgb(0 0 0 / .5), 0 0 0 1px var(--line-strong);
  --glow: 0 0 12px var(--amber-glow);
  --dur-1: 120ms; --dur-2: 200ms; --dur-3: 400ms; --ease: cubic-bezier(.2, .8, .2, 1);
  --nav-w: 232px; --top-h: 56px;
  color-scheme: dark;
}

:root[data-theme="light"] {
  --bg-0: #EFEBE3; --bg-1: #F7F4EE; --bg-2: #FFFFFF; --bg-3: #ECE7DE;
  --line: #D9D2C6; --line-strong: #BFB6A7;
  --text-0: #16171A; --text-1: #45474D; --text-2: #62656C;
  --amber: #B45309; --amber-hi: #C2610F; --amber-lo: #8F3F05;
  --amber-glow: rgb(180 83 9 / .18); --amber-tint: rgb(180 83 9 / .08);
  --seg-on: #B45309; --seg-off: rgb(180 83 9 / .07);
  --ok: #1C7C45; --warn: #8A6A00; --fail: #C0271D; --info: #0B6FA4;
  --ok-tint: rgb(28 124 69 / .10); --warn-tint: rgb(138 106 0 / .10);
  --fail-tint: rgb(192 39 29 / .08); --info-tint: rgb(11 111 164 / .08);
  --on-amber: #FFFFFF;
  --elev-1: 0 1px 2px rgb(0 0 0 / .06), 0 0 0 1px var(--line);
  --elev-2: 0 12px 32px rgb(0 0 0 / .18), 0 0 0 1px var(--line);
  color-scheme: light;
}

@media (prefers-reduced-motion: reduce) {
  :root { --dur-1: 0ms; --dur-2: 0ms; --dur-3: 0ms; }
}

/* vettealdl.com - "Key-On" (docs/website-design.md), built on the app's Amber Cluster tokens (prepended at build) */

:root {
  --font-display: "Bahnschrift", "DIN Alternate", "DIN Condensed", "Roboto Condensed", "Arial Narrow", sans-serif;
  --fs-d1: clamp(38px, 4.4vw, 66px);
  --fs-d2: clamp(34px, 4.6vw, 60px);
  --fs-d3: clamp(26px, 3vw, 38px);
  --bar-1: #9BE15D; --bar-2: #E8E04A; --bar-3: #FF8F1A; --bar-4: #E5322B;
  --lens: linear-gradient(135deg, rgb(255 255 255 / .065) 0%, rgb(255 255 255 / .012) 38%, transparent 60%);
  --dur-4: 800ms; --dur-5: 1200ms;
  --ease-needle: cubic-bezier(.3, 1.4, .5, 1);
  --max-w: 1200px;
  --gutter: 32px;
  --page-bg:
    radial-gradient(1200px 520px at 78% -8%, rgb(255 143 26 / .10), transparent 70%),
    radial-gradient(900px 600px at -10% 20%, rgb(229 50 43 / .05), transparent 70%),
    var(--bg-0);
}
:root[data-theme="light"] {
  --page-bg: radial-gradient(1200px 520px at 78% -8%, rgb(180 83 9 / .08), transparent 70%), var(--bg-0);
  --lens: linear-gradient(135deg, rgb(255 255 255 / .9) 0%, rgb(255 255 255 / .4) 40%, transparent 70%);
  --bar-1: #3F9B1E; --bar-2: #B39A00; --bar-3: #B45309; --bar-4: #C0271D;
}

/* ---------------------------------------------------------------- base */
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 88px; }
body {
  margin: 0; min-height: 100vh; background: var(--page-bg); background-attachment: fixed; color: var(--text-0);
  font: 400 16px/1.6 var(--font-ui); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg { max-width: 100%; }
img { height: auto; display: block; }
a { color: var(--amber-hi); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--amber); }
:focus-visible { outline: 2px solid var(--amber-hi); outline-offset: 2px; border-radius: 4px; }
::selection { background: var(--amber); color: var(--on-amber); }
h1, h2, h3 { line-height: 1.12; margin: 0 0 .5em; font-weight: 700; letter-spacing: -.01em; text-wrap: balance; }
h2 { font-size: var(--fs-d3); font-family: var(--font-display); font-weight: 600; letter-spacing: .005em; }
h3 { font-size: 19px; }
p { margin: 0 0 1em; text-wrap: pretty; }
code { font: 500 .88em/1.4 var(--font-mono); background: var(--bg-3); border: 1px solid var(--line); border-radius: 5px; padding: .08em .38em; color: var(--text-0); }
pre { font: 13px/1.55 var(--font-mono); background: var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-3); padding: 16px 18px; overflow: auto; }
pre code { background: none; border: 0; padding: 0; }
small { font-size: 12.5px; color: var(--text-2); }
.skip { position: absolute; left: 12px; top: -60px; z-index: 100; background: var(--amber); color: var(--on-amber); padding: 10px 16px; border-radius: var(--r-2); font-weight: 700; transition: top var(--dur-2); }
.skip:focus { top: 12px; }
.wrap { width: 100%; max-width: calc(var(--max-w) + 2 * var(--gutter)); margin: 0 auto; padding: 0 var(--gutter); }
.wrap.narrow { max-width: calc(860px + 2 * var(--gutter)); }
.center { text-align: center; }
.fine { font-size: 13px; color: var(--text-2); margin-top: 14px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* LCD glyphs: unlit segments stay faintly visible, like the 1984-89 cluster */
.lcd { display: inline-block; vertical-align: middle; overflow: visible; }
.lcd .on { fill: var(--seg-on); filter: drop-shadow(0 0 5px var(--amber-glow)); }
.lcd .off { fill: var(--seg-off); }
.lcd.big .on { filter: drop-shadow(0 0 10px var(--amber-glow)); }
:root[data-theme="light"] .lcd .on { filter: none; }

/* ---------------------------------------------------------------- legends, strakes, chips */
.legend, .eyebrow { font: 600 12px/1.2 var(--font-display); letter-spacing: .16em; text-transform: uppercase; color: var(--amber); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 18px; font-size: 13px; }
.eyebrow::before {                       /* the 1991-96 side-gill strakes */
  content: ""; width: 34px; height: 15px; flex: none;
  background:
    linear-gradient(var(--amber), var(--amber)) 0 0 / 34px 3px no-repeat,
    linear-gradient(var(--amber), var(--amber)) 0 4px / 28px 3px no-repeat,
    linear-gradient(var(--amber), var(--amber)) 0 8px / 21px 3px no-repeat,
    linear-gradient(var(--amber), var(--amber)) 0 12px / 13px 3px no-repeat;
  opacity: .9;
}
.h-strake { position: relative; }
.chip { display: inline-flex; align-items: center; gap: 4px; font: 600 11px/1 var(--font-display); letter-spacing: .1em; text-transform: uppercase; padding: 5px 7px; border-radius: var(--r-1); border: 1px solid var(--line-strong); color: var(--text-1); background: var(--bg-2); white-space: nowrap; }
.chip.beta { color: var(--amber-hi); border-color: var(--amber-lo); background: var(--amber-tint); }
.mask { font: 600 13px/1 var(--font-mono); color: var(--amber-hi); background: var(--amber-tint); border: 1px solid rgb(255 143 26 / .25); padding: 4px 7px; border-radius: 5px; white-space: nowrap; }
.display { font-family: var(--font-display); font-weight: 700; font-size: var(--fs-d1); line-height: .98; letter-spacing: -.012em; text-transform: uppercase; font-stretch: 82%; font-variation-settings: "wdth" 82; margin-bottom: 26px; }
.display span { display: block; color: var(--amber); text-shadow: 0 0 34px var(--amber-glow); }
.lead { font-size: clamp(17px, 1.6vw, 20px); line-height: 1.55; color: var(--text-1); max-width: 62ch; }
.section-lead { color: var(--text-1); max-width: 70ch; font-size: 17px; margin-bottom: 32px; }

/* ---------------------------------------------------------------- surfaces */
.lens {
  position: relative; background: var(--lens), var(--bg-1); border: 1px solid var(--line); border-radius: var(--r-3);
  box-shadow: inset 0 1px 0 rgb(255 255 255 / .05), 0 24px 48px -28px rgb(0 0 0 / .8);
}
:root[data-theme="light"] .lens { box-shadow: 0 1px 2px rgb(0 0 0 / .05), 0 18px 40px -26px rgb(0 0 0 / .25); }
.checker { height: 8px; background: conic-gradient(var(--text-0) 25%, transparent 0 50%, var(--text-0) 0 75%, transparent 0) 0 0 / 8px 8px; opacity: .5; }

/* ---------------------------------------------------------------- buttons */
.btn {
  --h: 42px; position: relative; display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: var(--h); padding: 0 18px; border-radius: var(--r-2); border: 1px solid var(--line-strong);
  background: var(--bg-2); color: var(--text-0); font: 600 15px/1 var(--font-ui); text-decoration: none; cursor: pointer;
  transition: background var(--dur-1), border-color var(--dur-1), color var(--dur-1), transform var(--dur-1), box-shadow var(--dur-2);
  white-space: nowrap; -webkit-tap-highlight-color: transparent;
}
.btn::after { content: ""; position: absolute; inset: -4px; }
.btn:hover { border-color: var(--amber-lo); color: var(--text-0); }
.btn:active { transform: translateY(1px); }
.btn .ico { width: 19px; height: 19px; }
.btn.primary { background: var(--amber); border-color: var(--amber); color: var(--on-amber); box-shadow: 0 0 0 0 var(--amber-glow), 0 10px 26px -12px rgb(255 143 26 / .7); }
.btn.primary:hover { background: var(--amber-hi); border-color: var(--amber-hi); box-shadow: 0 0 0 6px rgb(255 143 26 / .12), 0 14px 30px -12px rgb(255 143 26 / .8); }
.btn.outline { background: transparent; border-color: var(--amber); color: var(--amber-hi); }
.btn.outline:hover { background: var(--amber-tint); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--text-1); }
.btn.ghost:hover { background: var(--bg-3); }
.btn.sm { --h: 34px; padding: 0 12px; font-size: 13.5px; }
.btn.lg { --h: 52px; padding: 0 24px; font-size: 16.5px; border-radius: 10px; }
.icon-btn { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: var(--r-2); border: 1px solid transparent; background: transparent; color: var(--text-1); cursor: pointer; transition: background var(--dur-1), color var(--dur-1); }
.icon-btn:hover { background: var(--bg-3); color: var(--text-0); }
.icon-btn.sm { width: 32px; height: 32px; }
.ico { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.more-link { display: inline-flex; align-items: center; gap: 6px; font-weight: 600; text-decoration: none; }
.more-link .ico { width: 18px; height: 18px; transition: transform var(--dur-2) var(--ease); }
.more-link:hover .ico { transform: translateX(4px); }

/* ---------------------------------------------------------------- top bar */
.top { position: sticky; top: 0; z-index: 50; background: rgb(7 8 10 / .78); backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4); border-bottom: 1px solid var(--line); }
:root[data-theme="light"] .top { background: rgb(247 244 238 / .82); }
.top-in { display: flex; align-items: center; gap: 22px; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--text-0); flex: none; }
.brand img { width: 38px; height: 38px; transition: transform var(--dur-3) var(--ease-needle); }
.brand:hover img { transform: rotate(-8deg) scale(1.05); }
.wm { display: block; height: 17px; width: auto; overflow: visible; }
.wm-v { fill: var(--text-0); }
.wm-a { fill: var(--amber); filter: drop-shadow(0 0 5px var(--amber-glow)); }
:root[data-theme="light"] .wm-a { filter: none; }
.foot-logo { display: flex; align-items: center; gap: 14px; }
.foot-logo .wm { height: 16px; }
.nav { display: flex; gap: 2px; margin-left: auto; }
.nav a { position: relative; padding: 9px 12px; border-radius: var(--r-2); color: var(--text-1); text-decoration: none; font: 600 14px/1 var(--font-display); letter-spacing: .09em; text-transform: uppercase; transition: color var(--dur-1), background var(--dur-1); }
.nav a:hover { color: var(--text-0); background: var(--bg-2); }
.nav a[aria-current] { color: var(--amber-hi); }
.nav a[aria-current]::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 2px; height: 2px; border-radius: 2px; background: var(--amber); box-shadow: 0 0 10px var(--amber-glow); }
.tools { display: flex; align-items: center; gap: 4px; }
.lang { position: relative; }
.lang summary { list-style: none; display: flex; align-items: center; gap: 6px; height: 40px; padding: 0 10px; border-radius: var(--r-2); cursor: pointer; color: var(--text-1); font: 600 13px/1 var(--font-display); letter-spacing: .1em; }
.lang summary::-webkit-details-marker { display: none; }
.lang summary:hover { background: var(--bg-3); color: var(--text-0); }
.lang summary .ico { width: 19px; height: 19px; }
.lang ul { position: absolute; right: 0; top: calc(100% + 8px); margin: 0; padding: 6px; list-style: none; min-width: 190px; background: var(--bg-2); border: 1px solid var(--line-strong); border-radius: var(--r-3); box-shadow: var(--elev-2); animation: drop var(--dur-2) var(--ease); }
.lang li a { display: flex; gap: 10px; align-items: center; padding: 9px 12px; border-radius: var(--r-2); color: var(--text-0); text-decoration: none; font-size: 14px; }
.lang li a b { font: 700 11px/1 var(--font-display); letter-spacing: .1em; color: var(--text-2); width: 22px; }
.lang li a:hover { background: var(--bg-3); }
.lang li a[aria-current] { color: var(--amber-hi); }
.lang li a[aria-current] b { color: var(--amber); }
@keyframes drop { from { opacity: 0; transform: translateY(-6px); } }

/* pop-up headlamp theme switch: lid up + beams at night, folded in daylight */
.lamp { width: 30px; height: 24px; overflow: visible; }
.lamp .housing { fill: var(--bg-3); stroke: var(--line-strong); stroke-width: 1.2; }
.lamp .lid { transform-origin: 3px 11.5px; transform: rotate(-24deg); transition: transform var(--dur-3) var(--ease-needle); }
.lamp .lid rect:first-child { fill: var(--text-1); }
.lamp .glass { fill: var(--amber-hi); filter: drop-shadow(0 0 3px var(--amber)); transition: fill var(--dur-2); }
.lamp .beam { stroke: var(--amber-hi); stroke-width: 1.6; stroke-linecap: round; fill: none; opacity: .9; transition: opacity var(--dur-2), transform var(--dur-3) var(--ease); transform-origin: 22px 12px; }
:root[data-theme="light"] .lamp .lid { transform: rotate(0deg); }
:root[data-theme="light"] .lamp .glass { fill: var(--line-strong); filter: none; }
:root[data-theme="light"] .lamp .beam { opacity: 0; transform: scaleX(.3); }
.menu { display: none; }

/* scroll tach: fills with the page, red-line at the end */
.tach { position: relative; height: 4px; background:
  linear-gradient(90deg, transparent 88%, rgb(229 50 43 / .35) 88%),
  repeating-linear-gradient(90deg, var(--line) 0 10px, transparent 10px 13px); }
.tach i { position: absolute; inset: 0 auto 0 0; width: 100%; transform-origin: 0 50%; transform: scaleX(var(--p, 0));
  background: linear-gradient(90deg, var(--bar-1) 0 58%, var(--bar-2) 58% 74%, var(--bar-3) 74% 88%, var(--bar-4) 88%) 0 0 / 100vw 100%;
  -webkit-mask: repeating-linear-gradient(90deg, #000 0 10px, transparent 10px 13px); mask: repeating-linear-gradient(90deg, #000 0 10px, transparent 10px 13px);
  filter: drop-shadow(0 0 4px rgb(255 143 26 / .5)); }

/* ---------------------------------------------------------------- hero */
.hero { position: relative; padding: 64px 0 0; overflow: hidden; isolation: isolate; }
.hero::before { /* faint LCD cell grid behind the cluster */
  content: ""; position: absolute; inset: 0; z-index: -2; opacity: .5;
  background: linear-gradient(rgb(255 255 255 / .025) 1px, transparent 1px) 0 0 / 100% 24px,
              linear-gradient(90deg, rgb(255 255 255 / .025) 1px, transparent 1px) 0 0 / 24px 100%;
  -webkit-mask: radial-gradient(900px 500px at 70% 40%, #000, transparent 75%); mask: radial-gradient(900px 500px at 70% 40%, #000, transparent 75%);
}
.hero-bg { position: absolute; inset: 0; z-index: -3; }
.hero-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 80% 55%; opacity: .62; filter: saturate(.95) contrast(1.05); }
.hero-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, var(--bg-0) 18%, rgb(7 8 10 / .55) 55%, rgb(7 8 10 / .2)), linear-gradient(0deg, var(--bg-0) 2%, transparent 40%); }
:root[data-theme="light"] .hero-bg img { opacity: .16; }
:root[data-theme="light"] .hero-bg::after { background: linear-gradient(90deg, var(--bg-0) 25%, rgb(239 235 227 / .6)), linear-gradient(0deg, var(--bg-0) 2%, transparent 40%); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 48px; align-items: center; padding-bottom: 72px; }
.hero-copy .lead { margin-bottom: 30px; }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.beltline { position: absolute; left: 0; right: 0; bottom: 70px; width: 100%; height: 200px; z-index: -1; pointer-events: none; }
.beltline path { fill: none; stroke: var(--amber); stroke-width: 1.4; opacity: .38; vector-effect: non-scaling-stroke; stroke-dasharray: 2400; stroke-dashoffset: 2400; animation: draw 2.6s .6s var(--ease) forwards; }
@keyframes draw { to { stroke-dashoffset: 0; } }

.cluster { padding: 18px 18px 14px; overflow: hidden; }
.cluster::after { /* the smoked lens reflection */
  content: ""; position: absolute; inset: 0; border-radius: inherit; pointer-events: none;
  background: linear-gradient(115deg, transparent 30%, rgb(255 255 255 / .05) 44%, transparent 58%);
}
.cluster-svg { display: block; width: 100%; height: auto; overflow: visible; user-select: none; -webkit-user-select: none; touch-action: none; cursor: grab; }
.cluster-svg:active { cursor: grabbing; }
.cluster-svg .ts, .cluster-svg .bs { fill: var(--seg-off); transition: fill 60ms linear; }
.cluster-svg .ts.on.z1, .cluster-svg .bs.on.z1 { fill: var(--bar-1); }
.cluster-svg .ts.on.z2, .cluster-svg .bs.on.z2 { fill: var(--bar-2); }
.cluster-svg .ts.on.z3, .cluster-svg .bs.on.z3 { fill: var(--bar-3); }
.cluster-svg .ts.on.z4, .cluster-svg .bs.on.z4 { fill: var(--bar-4); }
.cluster-svg .tach-arc, .cluster-svg .bars { filter: drop-shadow(0 0 6px rgb(255 143 26 / .35)); }
:root[data-theme="light"] .cluster-svg .tach-arc, :root[data-theme="light"] .cluster-svg .bars { filter: none; }
.cluster-svg .tick { fill: var(--text-2); font: 600 15px var(--font-display); text-anchor: middle; }
.cluster-svg .leg { fill: var(--amber); font: 600 12px var(--font-display); letter-spacing: .16em; text-anchor: middle; }
.cluster-svg .leg.small { font-size: 10.5px; letter-spacing: .08em; }
.cluster-svg .sub { fill: var(--text-2); font: 600 11px var(--font-display); letter-spacing: .14em; text-anchor: middle; }
.cluster-svg .rule { stroke: var(--line); stroke-width: 1; }
.cluster-svg .lamp-tt circle { fill: var(--line-strong); transition: fill var(--dur-2), filter var(--dur-2); }
.cluster-svg .lamp-tt text { fill: var(--text-2); font: 600 11px var(--font-display); letter-spacing: .12em; }
.cluster-svg .lamp-tt.test circle { fill: var(--amber); filter: drop-shadow(0 0 5px var(--amber)); }
.cluster-svg .lamp-tt.ok circle { fill: var(--ok); filter: drop-shadow(0 0 5px rgb(52 209 122 / .8)); }
.cluster-svg .lamp-tt.ok text, .cluster-svg .lamp-tt.test text { fill: var(--text-1); }
.cluster-ctl { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 8px; }
.cluster-ctl .hint { font-size: 12.5px; color: var(--text-2); }
.cluster-ctl [data-blip][aria-pressed="true"] { background: var(--amber); color: var(--on-amber); }

.frames { margin-top: 14px; padding: 12px 14px 12px; }
.frames-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 16px; margin-bottom: 10px; font-size: 12px; }
.frames-head .tx { color: var(--text-2); }
.frames-head .tx i, .hex .rx { font: 700 10px/1 var(--font-display); letter-spacing: .1em; font-style: normal; color: var(--on-amber); background: var(--amber); border-radius: 3px; padding: 3px 5px; margin-right: 4px; }
.frames-head .tx code { font-size: 12px; background: transparent; border: 0; padding: 0; color: var(--amber-hi); }
.frames-head .ck { margin-left: auto; color: var(--ok); font: 600 11px/1 var(--font-display); letter-spacing: .12em; text-transform: uppercase; }
.hex { display: grid; grid-template-columns: auto repeat(17, 1fr); gap: 3px 2px; font: 500 12px/1.5 var(--font-mono); color: var(--text-2); outline: none; }
.hex .rx { grid-row: span 4; align-self: start; background: var(--info); margin: 2px 6px 0 0; }
.hex b { font-weight: 500; text-align: center; border-radius: 3px; transition: color 400ms, background 400ms; cursor: default; }
.hex b[data-ch] { color: var(--text-0); background: rgb(255 143 26 / .07); box-shadow: inset 0 -1px 0 rgb(255 143 26 / .45); cursor: help; }
.hex b.flash { color: var(--on-amber); background: var(--amber); transition: none; }
.hex b.sel { outline: 1px solid var(--amber-hi); color: var(--amber-hi); }
.hex b:nth-child(-n+4) { color: var(--info); }
.hex b:last-child { color: var(--ok); }
.decode { margin: 10px 0 0; min-height: 1.5em; font: 12.5px/1.5 var(--font-mono); color: var(--text-1); }
.decode em { color: var(--amber-hi); font-style: normal; }

/* ---------------------------------------------------------------- stats */
.stats { margin-top: 56px; }
.stats ul { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 0; border: 1px solid var(--line); border-radius: var(--r-3); background: var(--lens), var(--bg-1); overflow: hidden; }
.stat { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 26px 12px 22px; border-right: 1px solid var(--line); text-align: center; }
.stat:last-child { border-right: 0; }

/* ---------------------------------------------------------------- sections */
.band { padding-top: 110px; }
.band.split, .dl-info { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; }
.page-hero { padding: 76px var(--gutter) 34px; }
.page-hero.slim { padding-bottom: 12px; }
.page-hero .display { font-size: var(--fs-d2); }

/* tell-tale cards: icons light up like cluster tell-tales */
.tt-grid { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.tt-grid.three { grid-template-columns: repeat(3, 1fr); }
.tt-card { padding: 22px 22px 18px; transition: border-color var(--dur-2), transform var(--dur-2) var(--ease); }
.tt-card:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.tt-card h3 { margin: 16px 0 8px; font-size: 18px; }
.tt-card p { color: var(--text-1); font-size: 15px; margin-bottom: 10px; }
.tt { display: inline-grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; border: 1px solid var(--line-strong); background: var(--bg-2); color: var(--text-2); transition: color 280ms, box-shadow 280ms, border-color 280ms, background 280ms; }
.tt .ico { width: 23px; height: 23px; }
.tt.lit, .in .tt { color: var(--amber-hi); border-color: var(--amber-lo); background: radial-gradient(circle, rgb(255 143 26 / .22), rgb(255 143 26 / .05) 70%); box-shadow: 0 0 22px -2px var(--amber-glow), inset 0 0 10px rgb(255 143 26 / .2); }

/* gallery + bezels */
.gallery { display: grid; grid-template-columns: repeat(2, 1fr); gap: 26px; }
.shot { margin: 0; }
.bezel { display: block; width: 100%; padding: 8px; border-radius: 16px; cursor: zoom-in; border: 1px solid var(--line-strong);
  background: linear-gradient(145deg, #1c2026, #0b0d10 60%); box-shadow: inset 0 1px 0 rgb(255 255 255 / .06), 0 30px 60px -30px rgb(0 0 0 / .9); position: relative; overflow: hidden; transition: transform var(--dur-3) var(--ease), box-shadow var(--dur-3); }
.bezel img { border-radius: 9px; width: 100%; }
.bezel::after { content: ""; position: absolute; inset: 0; background: linear-gradient(115deg, transparent 35%, rgb(255 255 255 / .07) 47%, transparent 60%); transform: translateX(-60%); transition: transform 900ms var(--ease); pointer-events: none; }
.bezel:hover { transform: translateY(-4px); box-shadow: inset 0 1px 0 rgb(255 255 255 / .08), 0 40px 70px -30px rgb(0 0 0 / .95), 0 0 0 1px var(--amber-lo); }
.bezel:hover::after { transform: translateX(60%); }
.shot figcaption { margin-top: 12px; font-size: 14px; color: var(--text-2); }

.lightbox { border: 0; padding: 0; background: transparent; max-width: min(96vw, 1500px); max-height: 94vh; overflow: visible; }
.lightbox::backdrop { background: rgb(0 0 0 / .86); backdrop-filter: blur(6px); }
.lightbox img { max-height: 84vh; width: auto; margin: 0 auto; border-radius: 12px; border: 1px solid var(--line-strong); box-shadow: 0 30px 80px rgb(0 0 0 / .8); }
.lightbox p { text-align: center; color: #B9B2A6; margin: 12px 0 0; font-size: 14px; }
.lightbox .icon-btn { position: absolute; top: -48px; right: 0; color: #F2EEE6; }
.lightbox .nav-l, .lightbox .nav-r { position: absolute; top: 50%; transform: translateY(-50%); color: #F2EEE6; background: rgb(0 0 0 / .5); }
.lightbox .nav-l { left: -52px; } .lightbox .nav-r { right: -52px; }
.lightbox .nav-l .ico { transform: scaleX(-1); }
.lightbox[open] { animation: pop var(--dur-3) var(--ease); }
@keyframes pop { from { opacity: 0; transform: scale(.96); } }

/* triad */
.triad { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; counter-reset: t; }
.triad-card { padding: 26px 24px 20px; }
.triad-card .num { display: block; margin-bottom: 14px; }
.triad-card h3 { font: 600 24px/1.1 var(--font-display); text-transform: uppercase; letter-spacing: .03em; }
.triad-card p { color: var(--text-1); }

/* coverage table */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table { border-collapse: collapse; width: 100%; font-size: 15px; }
th { font: 600 11.5px/1.2 var(--font-display); letter-spacing: .14em; text-transform: uppercase; color: var(--amber); text-align: left; padding: 14px 16px; border-bottom: 1px solid var(--line-strong); white-space: nowrap; }
td { padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
tbody tr:last-child td { border-bottom: 0; }
tbody tr { transition: background var(--dur-1); }
tbody tr:hover { background: rgb(255 143 26 / .04); }
td small { display: block; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
td.yr { font: 600 17px/1.2 var(--font-display); white-space: nowrap; color: var(--text-0); }
.cov td .chip { margin: 0 4px 4px 0; }

/* story */
.story { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: start; }
.story p { color: var(--text-1); }
.proof { list-style: none; margin: 38px 0 0; padding: 0; display: grid; gap: 12px; }
.proof li { display: flex; gap: 14px; padding: 16px 18px; border: 1px solid var(--line); border-radius: var(--r-3); background: var(--bg-1); }
.proof .ico { color: var(--ok); margin-top: 2px; }

/* ---------------------------------------------------------------- download */
.dl-panel { display: grid; grid-template-columns: auto 1fr auto; grid-template-areas: "ver meta count" "act act act" "fine fine fine"; gap: 22px 36px; align-items: center; padding: 30px; }
.dl-panel.compact { grid-template-columns: 1fr; grid-template-areas: "ver" "meta" "count" "act" "fine"; }
.dl-ver { grid-area: ver; display: flex; flex-direction: column; gap: 10px; align-items: flex-start; }
.dl-meta { grid-area: meta; display: grid; grid-template-columns: auto 1fr; gap: 8px 18px; margin: 0; font-size: 14.5px; }
.dl-meta dt { color: var(--text-2); font: 600 11.5px/1.9 var(--font-display); letter-spacing: .12em; text-transform: uppercase; }
.dl-meta dd { margin: 0; min-width: 0; }
.dl-meta .sha { display: flex; gap: 6px; align-items: center; }
.dl-meta .sha code { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 42ch; }
.dl-count { grid-area: count; display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.dl-info .dl-count { padding: 18px 20px; margin: 16px 0; }
.dl-actions { grid-area: act; display: flex; flex-wrap: wrap; gap: 12px; }
.dl-panel > .fine { grid-area: fine; margin: 0; }
div.dl-meta.lens, dl.dl-meta.lens { padding: 20px; }

.page-bg { position: absolute; left: 0; right: 0; top: 0; height: 760px; z-index: -1; overflow: hidden; pointer-events: none; }
.page-bg img { width: 100%; height: 100%; object-fit: cover; object-position: 50% 40%; opacity: .3; }
.page-bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgb(7 8 10 / .2), var(--bg-0) 92%), radial-gradient(ellipse at 50% 35%, transparent 30%, var(--bg-0) 85%); }
:root[data-theme="light"] .page-bg img { opacity: .12; }
:root[data-theme="light"] .page-bg::after { background: linear-gradient(180deg, rgb(239 235 227 / .3), var(--bg-0) 92%); }
main { position: relative; isolation: isolate; }
.dl-hero { text-align: center; }
.dl-hero .eyebrow { justify-content: center; }
.dl-hero .lead { margin-left: auto; margin-right: auto; }
.halfstep { perspective: 1400px; }
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 980px; margin: 18px auto 0; }
.choice { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding: 30px 30px 28px; text-decoration: none; color: var(--text-0);
  transform-origin: 50% 100%; animation: popup 700ms var(--ease-needle) both; transition: border-color var(--dur-2), transform var(--dur-3) var(--ease), box-shadow var(--dur-3); }
.choice.free { animation-delay: 110ms; }
@keyframes popup { from { opacity: 0; transform: rotateX(-58deg) translateY(30px); } }
.choice h2 { font-size: 30px; margin: 14px 0 4px; }
.choice p { color: var(--text-1); flex: 1; }
.choice .btn { margin-top: 10px; pointer-events: none; }
.choice:hover { transform: translateY(-5px); border-color: var(--amber-lo); box-shadow: 0 0 0 1px var(--amber-lo), 0 30px 60px -28px rgb(255 143 26 / .35); color: var(--text-0); }
.choice.support { background: radial-gradient(420px 220px at 90% -10%, rgb(255 143 26 / .16), transparent 70%), var(--lens), var(--bg-1); border-color: rgb(255 143 26 / .35); }
.choice-ico { display: grid; place-items: center; width: 58px; height: 58px; border-radius: 16px; background: var(--amber-tint); color: var(--amber-hi); border: 1px solid rgb(255 143 26 / .3); }
.choice-ico .ico { width: 30px; height: 30px; }
.choices.chosen .choice:not(.picked) { opacity: .35; transform: scale(.97); }
.choices.chosen .choice.picked { border-color: var(--amber); }
.dl-status { display: grid; grid-template-columns: auto 1fr; gap: 28px; align-items: center; max-width: 980px; margin: 22px auto 0; padding: 26px 30px; animation: popup 600ms var(--ease-needle) both; }
.dl-status h2 { font-size: 26px; margin-bottom: 6px; }
.dl-status p { color: var(--text-1); margin-bottom: 8px; }
.beta-note { display: flex; gap: 14px; align-items: flex-start; max-width: 980px; margin: 18px auto 0; padding: 16px 20px;
  border: 1px solid rgb(245 217 10 / .35); border-left: 3px solid var(--warn); border-radius: var(--r-3); background: var(--warn-tint); }
.beta-note .chip { flex: none; margin-top: 2px; color: var(--warn); border-color: rgb(245 217 10 / .5); background: transparent; }
.beta-note p { margin: 0; color: var(--text-1); font-size: 15px; }
.dl-panel .beta-note { grid-column: 1 / -1; margin: 0; max-width: none; }
.dl-soon { max-width: 980px; margin: 22px auto 0; padding: 28px 32px; text-align: center; }
.dl-soon h2 { font-size: 28px; margin-bottom: 8px; }
.dl-soon p { color: var(--text-1); margin: 0; }
.dl-lcd { position: relative; padding: 16px 18px; border-radius: var(--r-2); background: #050608; border: 1px solid var(--line); overflow: hidden; }
.dl-lcd .sweep { position: absolute; left: 0; bottom: 0; height: 3px; width: 100%; background: linear-gradient(90deg, var(--bar-1), var(--bar-2), var(--bar-3)); transform-origin: 0 50%; animation: sweep 1.6s var(--ease) forwards; }
@keyframes sweep { from { transform: scaleX(0); } }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 10px; }
.steps li { counter-increment: s; position: relative; padding: 14px 16px 14px 58px; border: 1px solid var(--line); border-radius: var(--r-3); background: var(--bg-1); }
.steps li::before { content: counter(s); position: absolute; left: 14px; top: 12px; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; font: 700 15px/1 var(--font-display); color: var(--on-amber); background: var(--amber); box-shadow: 0 0 14px var(--amber-glow); }

/* ---------------------------------------------------------------- features page */
.feat-toc ul { list-style: none; margin: 28px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.feat-toc a { display: inline-flex; align-items: center; gap: 8px; padding: 8px 13px 8px 10px; border: 1px solid var(--line); border-radius: 999px; background: var(--bg-1); color: var(--text-1); text-decoration: none; font-size: 14px; transition: border-color var(--dur-1), color var(--dur-1), background var(--dur-1); }
.feat-toc a:hover { border-color: var(--amber-lo); color: var(--text-0); background: var(--amber-tint); }
.feat-toc .ico { width: 18px; height: 18px; color: var(--amber); }
.feats { display: grid; gap: 30px; padding-top: 30px; }
.feat { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 56px; align-items: center; padding: 64px 0; border-top: 1px solid var(--line); scroll-margin-top: 80px; }
.feat.flip .feat-text { order: 2; }
.feat.no-shot { grid-template-columns: minmax(0, 1fr); max-width: 820px; }
.feat h2 { font-size: var(--fs-d3); margin: 6px 0 14px; }
.feat .eyebrow { margin: 18px 0 0; }
.feat-text > p:not(.lead):not(.eyebrow) { color: var(--text-1); }
.feat .lead { color: var(--text-0); font-size: 18px; }
.points { list-style: none; margin: 4px 0 18px; padding: 0; display: grid; gap: 8px; }
.points li { position: relative; padding-left: 26px; color: var(--text-1); }
.points li::before { content: ""; position: absolute; left: 0; top: .62em; width: 14px; height: 3px; border-radius: 2px; background: var(--amber); box-shadow: 0 4px 0 -0px rgb(255 143 26 / .45); }
details.more { margin: 0 0 16px; }
details.more summary { cursor: pointer; color: var(--amber-hi); font-weight: 600; list-style: none; display: inline-flex; align-items: center; gap: 6px; }
details.more summary::-webkit-details-marker { display: none; }
details.more summary::after { content: "+"; font: 700 18px/1 var(--font-display); transition: transform var(--dur-2); }
details.more[open] summary::after { transform: rotate(45deg); }
details.more p { margin-top: 10px; color: var(--text-1); }

/* ---------------------------------------------------------------- manual + prose */
.manual { display: grid; grid-template-columns: 290px minmax(0, 1fr); gap: 56px; padding-top: 34px; align-items: start; }
.toc { position: sticky; top: 88px; max-height: calc(100vh - 110px); overflow: auto; overscroll-behavior: contain; padding-right: 6px; scrollbar-width: thin; }
.filter { display: flex; align-items: center; gap: 8px; padding: 0 12px; height: 42px; border: 1px solid var(--line-strong); border-radius: var(--r-2); background: var(--bg-1); margin-bottom: 14px; }
.filter:focus-within { border-color: var(--amber); box-shadow: 0 0 0 3px var(--amber-tint); }
.filter .ico { width: 18px; height: 18px; color: var(--text-2); }
.filter input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--text-0); font: 15px var(--font-ui); outline: none; }
.toc ol, .toc ul { list-style: none; margin: 0; padding: 0; }
.toc li a { display: block; padding: 6px 10px; border-left: 2px solid var(--line); color: var(--text-1); text-decoration: none; font-size: 14px; line-height: 1.35; transition: color var(--dur-1), border-color var(--dur-1), background var(--dur-1); }
.toc li li a { padding-left: 24px; font-size: 13px; color: var(--text-2); }
.toc li a:hover { color: var(--text-0); background: var(--bg-2); }
.toc li a.active { color: var(--amber-hi); border-left-color: var(--amber); background: var(--amber-tint); }
.toc li.hide { display: none; }
.toc .btn { margin-top: 14px; }
.prose { font-size: 16.5px; line-height: 1.7; min-width: 0; }
.prose h2 { font-size: clamp(26px, 2.6vw, 34px); margin: 64px 0 18px; padding-top: 22px; border-top: 1px solid var(--line); scroll-margin-top: 84px; }
.prose > h2:first-child { margin-top: 8px; border-top: 0; padding-top: 0; }
.prose h3 { font-size: 20px; margin: 36px 0 12px; scroll-margin-top: 84px; }
.prose h2 .anchor, .prose h3 .anchor { float: left; margin-left: -1.1em; width: 1em; color: var(--text-2); text-decoration: none; opacity: 0; transition: opacity var(--dur-1); }
.prose h2:hover .anchor, .prose h3:hover .anchor { opacity: 1; }
.prose p, .prose li { color: var(--text-1); }
.prose strong { color: var(--text-0); }
.prose em { color: var(--text-0); }
.prose ul, .prose ol { padding-left: 1.3em; }
.prose li { margin: 6px 0; }
.prose ul li::marker { color: var(--amber); }
.prose ol li::marker { color: var(--amber); font-weight: 700; }
.prose .table-wrap { margin: 18px 0 24px; border: 1px solid var(--line); border-radius: var(--r-3); background: var(--bg-1); }
.prose table { font-size: 14.5px; }
.prose td { color: var(--text-1); }
.prose mark { background: var(--amber-tint); color: var(--amber-hi); border-radius: 3px; padding: 0 2px; }
.prose .hit { animation: hit 1.4s var(--ease); }
@keyframes hit { 0%, 30% { background: var(--amber-tint); box-shadow: -8px 0 0 var(--amber-tint), 8px 0 0 var(--amber-tint); } }
.note-en, .callout { font-size: 14.5px; color: var(--text-1); padding: 12px 16px; border-radius: var(--r-2); border: 1px solid var(--line); border-left: 3px solid var(--info); background: var(--info-tint); margin: 18px 0; }
.callout { border-left-color: var(--amber); background: var(--amber-tint); }

/* cable */
.scope-wrap { margin-top: 8px; }
.scope { margin: 0; padding: 18px 20px 12px; }
.scope figcaption { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; margin-bottom: 8px; }
.scope figcaption code { background: none; border: 0; color: var(--amber-hi); }
.scope svg { display: block; width: 100%; height: 180px; }
.scope .grid line { stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; }
.scope .grid line.mid { stroke-dasharray: 4 6; }
.scope .trace { fill: none; stroke: var(--amber); stroke-width: 2; vector-effect: non-scaling-stroke; filter: drop-shadow(0 0 5px var(--amber-glow)); stroke-linejoin: round; }
.scope .labels text { fill: var(--text-2); font: 600 11px var(--font-mono); text-anchor: middle; }
.scope .labels text.byte { fill: var(--amber-hi); font-size: 13px; }
.scope .labels text.v { text-anchor: start; }
.schematic { margin: 10px 0 30px; }
.schematic a { display: block; border: 1px solid var(--line-strong); border-radius: var(--r-3); overflow: hidden; background: #0D0F12; transition: box-shadow var(--dur-2); }
.schematic a:hover { box-shadow: 0 0 0 1px var(--amber-lo), 0 20px 50px -20px rgb(0 0 0 / .8); }
.cable-doc { max-width: 980px; }

/* changelog */
.changelog h2 { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; font-size: clamp(20px, 2vw, 25px); }
.changelog h2 .ver-chip { display: inline-flex; padding: 8px 10px; border-radius: var(--r-2); background: #050608; border: 1px solid var(--line); }
.changelog h2 > span:last-child { font-family: var(--font-ui); font-weight: 600; font-size: 17px; color: var(--text-1); letter-spacing: 0; }

/* ---------------------------------------------------------------- footer */
.foot { margin-top: 130px; background: linear-gradient(180deg, transparent, rgb(0 0 0 / .35)); }
:root[data-theme="light"] .foot { background: linear-gradient(180deg, transparent, rgb(0 0 0 / .04)); }
.foot-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; padding-top: 56px; padding-bottom: 36px; }
.foot h2 { font: 600 12px/1 var(--font-display); letter-spacing: .16em; text-transform: uppercase; color: var(--amber); margin: 6px 0 16px; }
.foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 9px; }
.foot a { color: var(--text-1); text-decoration: none; font-size: 14.5px; }
.foot a:hover { color: var(--amber-hi); }
.foot-brand p { color: var(--text-2); font-size: 14.5px; margin: 12px 0; max-width: 34ch; }
.foot-brand .promise { display: flex; gap: 8px; align-items: center; color: var(--ok); font-size: 13.5px; }
.foot-brand .promise .ico { width: 18px; height: 18px; }
.foot .btn { color: var(--amber-hi); }
.legal { font-size: 12.5px; color: var(--text-2); padding-top: 22px; padding-bottom: 42px; border-top: 1px solid var(--line); }

/* ---------------------------------------------------------------- reveal (added by site.js only when motion is allowed) */
.js-reveal [data-reveal] { opacity: 0; transform: translateY(22px); transition: opacity 700ms var(--ease), transform 700ms var(--ease); transition-delay: var(--d, 0ms); }
.js-reveal [data-reveal].in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 1ms !important; animation-delay: 0ms !important; transition-duration: 1ms !important; }
  .beltline path { stroke-dashoffset: 0; }
}

/* ---------------------------------------------------------------- responsive */
@media (max-width: 1100px) {
  .tt-grid { grid-template-columns: repeat(2, 1fr); }
  .manual { grid-template-columns: 240px minmax(0, 1fr); gap: 36px; }
  .foot-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 960px) {
  :root { --gutter: 24px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .hero { padding-top: 40px; }
  .stats ul { grid-template-columns: repeat(3, 1fr); }
  .stat:nth-child(3) { border-right: 0; }
  .stat:nth-child(n+4) { border-top: 1px solid var(--line); }
  .triad, .tt-grid.three { grid-template-columns: 1fr; }
  .story, .band.split, .dl-info, .feat, .feat.flip { grid-template-columns: 1fr; gap: 32px; }
  .feat.flip .feat-text { order: 0; }
  .dl-panel { grid-template-columns: 1fr; grid-template-areas: "ver" "meta" "count" "act" "fine"; }
  .manual { grid-template-columns: 1fr; }
  .toc { position: static; max-height: none; }
  .toc nav { max-height: 320px; overflow: auto; border: 1px solid var(--line); border-radius: var(--r-3); padding: 6px; }
}
@media (max-width: 820px) {
  .menu { display: inline-grid; }
  .nav { position: fixed; inset: 66px 0 auto 0; flex-direction: column; gap: 0; padding: 10px var(--gutter) 18px; background: var(--bg-1); border-bottom: 1px solid var(--line); box-shadow: var(--elev-2);
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: opacity var(--dur-2), transform var(--dur-2) var(--ease), visibility var(--dur-2); }
  .nav.open { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 14px 8px; font-size: 16px; border-bottom: 1px solid var(--line); border-radius: 0; }
  .nav a[aria-current]::after { left: 8px; right: auto; width: 40px; bottom: 6px; }
  .tools { margin-left: auto; }
  .choices { grid-template-columns: 1fr; }
  .dl-status { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .lightbox .nav-l, .lightbox .nav-r { display: none; }
}
@media (max-width: 560px) {
  :root { --gutter: 16px; }
  .top-in { gap: 10px; height: 60px; }
  .nav { inset: 60px 0 auto 0; }
  .wm { height: 12px; }
  .brand { gap: 8px; }
  .brand img { width: 32px; height: 32px; }
  .tools { gap: 0; }
  .icon-btn { width: 38px; }
  .lang summary { padding: 0 6px; }
  .lang summary span { display: none; }
  .band { padding-top: 78px; }
  .stats ul { grid-template-columns: repeat(2, 1fr); }
  .stat { border-right: 1px solid var(--line) !important; border-top: 1px solid var(--line); }
  .stat:nth-child(-n+2) { border-top: 0; }
  .stat:nth-child(2n) { border-right: 0 !important; }
  .stat:last-child { grid-column: span 2; border-right: 0 !important; }
  .tt-grid { grid-template-columns: 1fr; }
  .cta .btn { width: 100%; }
  .hex { font-size: 10.5px; grid-template-columns: auto repeat(12, 1fr); }
  .hex .rx { grid-row: span 6; }
  .foot-grid { grid-template-columns: 1fr; gap: 28px; }
  .dl-meta { grid-template-columns: 1fr; gap: 2px; }
  .dl-meta dd { margin-bottom: 8px; }
  .dl-meta .sha code { max-width: 26ch; }
  .choice { padding: 24px 20px; }
  .dl-actions .btn { width: 100%; }
  .prose { font-size: 16px; }
}

/* ---------------------------------------------------------------- print (the manual) */
@media print {
  :root { --bg-0: #fff; --bg-1: #fff; --bg-2: #fff; --text-0: #000; --text-1: #222; --text-2: #444; --amber: #8F3F05; --amber-hi: #8F3F05; --line: #ccc; }
  body { background: #fff; font-size: 11pt; }
  .top, .foot, .toc, .page-hero .lead, .skip { display: none !important; }
  .manual { display: block; }
  .prose h2 { break-after: avoid; }
  a { color: #000; }
}