/* ════════════════════════════════════════════════════════════════════
   CINC CITY — V10 · "THE STANDARD"
   Institutional. Material. Monumental. (BIG × JACOBS, dead centre.)
   Concrete & stone palette · Spectral serif display · Manrope body ·
   JetBrains Mono technical labels. Sharp corners, hairline rules.
   Shape semantics (locked):
     ▪ square   = Design / Architecture
     ● circle   = System / Engineering
     ▲ triangle = Build / Construction
     ▪●▲ trio   = the integrated firm
   ════════════════════════════════════════════════════════════════════ */

/* display + body: Manrope (brand). mono: JetBrains Mono. */
:root { --font-display: 'Manrope', system-ui, -apple-system, sans-serif; }

/* ─── TOKENS · LIGHT (white, monochrome) ───────────────────────────── */
:root {
  --paper:    #FFFFFF;   /* page */
  --surface:  #FFFFFF;   /* raised */
  --sand:     #F5F5F3;   /* sunken band */
  --sand-2:   #FAFAF9;
  --line:     #E5E4E0;   /* hairline */
  --line-2:   #EFEEEB;

  --ink:      #15171A;   /* display / headings */
  --text:     #383C42;   /* body */
  --text-2:   #686C72;   /* secondary */
  --text-3:   #9A9DA2;   /* muted / meta */
  --text-4:   #C4C6C9;   /* faint */

  --accent:   #15171A;   /* monochrome — ink is the accent */
  --accent-2: #000000;   /* hover / deep */
  --accent-ink: #FFFFFF;
  --accent-soft: rgba(21, 23, 26, 0.06);

  --on-dark:  #FFFFFF;
  --nav-bg:   rgba(255, 255, 255, 0.82);
  --scrim:    rgba(16, 18, 20, 0.76);
}

/* ─── TOKENS · DARK (near-black, monochrome) ───────────────────────── */
[data-theme="dark"] {
  --paper:    #0E0F11;
  --surface:  #141619;
  --sand:     #121316;
  --sand-2:   #17191C;
  --line:     rgba(255,255,255,0.10);
  --line-2:   rgba(255,255,255,0.055);

  --ink:      #F3F4F5;
  --text:     #C2C6CB;
  --text-2:   #8A8E94;
  --text-3:   #64686E;
  --text-4:   #44474B;

  --accent:   #F3F4F5;   /* monochrome — near-white is the accent */
  --accent-2: #FFFFFF;
  --accent-ink: #0E0F11;
  --accent-soft: rgba(255, 255, 255, 0.10);

  --on-dark:  #FFFFFF;
  --nav-bg:   rgba(14, 15, 17, 0.82);
  --scrim:    rgba(6, 7, 8, 0.82);
}

/* ─── RESET / BASE ─────────────────────────────────────────────────── */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--text);
  font-family: 'Manrope', system-ui, sans-serif;
  font-size: 17px; line-height: 1.62; font-weight: 400;
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background 500ms ease, color 500ms ease;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
::selection { background: var(--accent); color: var(--accent-ink); }

/* ─── LAYOUT ───────────────────────────────────────────────────────── */
.wrap   { max-width: 1340px; margin-inline: auto; padding-inline: clamp(24px, 5vw, 88px); }
.wrap-n { max-width: 1060px; margin-inline: auto; padding-inline: clamp(24px, 5vw, 88px); }
section { position: relative; }
.sec  { padding: clamp(72px, 9vw, 132px) 0; }
.sec.band { background: var(--sand); border-block: 1px solid var(--line); }
.sec.tight { padding: clamp(48px,5vw,72px) 0; }

/* ─── TYPE ─────────────────────────────────────────────────────────── */
.serif { font-family: var(--font-display); }
.d1 { font-family: var(--font-display); font-size: clamp(42px, 6vw, 96px); font-weight: 600; line-height: 1.02; letter-spacing: -0.03em; color: var(--ink); margin: 0; text-wrap: balance; }
.d2 { font-family: var(--font-display); font-size: clamp(30px, 4vw, 56px); font-weight: 600; line-height: 1.06; letter-spacing: -0.024em; color: var(--ink); margin: 0; text-wrap: balance; }
.d3 { font-family: var(--font-display); font-size: clamp(23px, 2.4vw, 34px); font-weight: 600; line-height: 1.14; letter-spacing: -0.018em; color: var(--ink); margin: 0; text-wrap: balance; }
.d4 { font-family: var(--font-display); font-size: clamp(21px, 2vw, 27px); font-weight: 600; line-height: 1.2; letter-spacing: -0.005em; color: var(--ink); margin: 0; }
.lede { font-size: clamp(18px, 1.55vw, 22px); line-height: 1.55; letter-spacing: -0.006em; color: var(--text-2); font-weight: 400; margin: 0; text-wrap: pretty; }
.body { font-size: 17px; line-height: 1.68; color: var(--text); margin: 0; text-wrap: pretty; }
.italic { font-style: italic; }
.accent-txt { color: var(--accent); }
.mono { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-3); font-weight: 500; }

.eyebrow {
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--text-3); font-weight: 500;
  display: inline-flex; align-items: center; gap: 13px;
}
.eyebrow .glyph { color: var(--accent); }
.eyebrow .num { color: var(--ink); }

/* ─── GEOMETRY MARKS (semantic) ────────────────────────────────────── */
.marks { display: inline-flex; align-items: center; gap: 7px; }
.marks .sq { width: 7px; height: 7px; background: currentColor; }
.marks .ci { width: 7px; height: 7px; border-radius: 50%; background: currentColor; }
.marks .tr { width: 0; height: 0; border-left: 4px solid transparent; border-right: 4px solid transparent; border-bottom: 7px solid currentColor; }

/* ─── BUTTONS ──────────────────────────────────────────────────────── */
.btn {
  font-family: 'Manrope', sans-serif; font-size: 14px; font-weight: 600;
  padding: 15px 26px; border: 1px solid transparent; border-radius: 2px;
  cursor: pointer; display: inline-flex; align-items: center; justify-content: center;
  gap: 10px; white-space: nowrap; line-height: 1; letter-spacing: 0.01em;
  transition: background 240ms ease, color 240ms ease, border-color 240ms ease, transform 120ms ease;
}
.btn:active { transform: scale(0.985); }
.btn .arrow { transition: transform 260ms ease; display: inline-block; }
.btn:hover .arrow { transform: translateX(5px); }
.btn-primary { background: var(--ink); color: var(--paper); }
.btn-primary:hover { background: var(--accent); color: var(--accent-ink); }
.btn-accent { background: var(--accent); color: var(--accent-ink); }
.btn-accent:hover { background: var(--accent-2); }
.btn-outline { background: transparent; color: var(--ink); border-color: var(--line); }
.btn-outline:hover { border-color: var(--ink); }
.btn-ghost { background: transparent; color: var(--ink); padding: 8px 0; gap: 9px; border-radius: 0; }
.btn-ghost:hover { color: var(--accent); }
.btn-sm { padding: 12px 18px; font-size: 13px; }

/* ─── IMAGE TREATMENT (warm material grade) ────────────────────────── */
.img { position: relative; overflow: hidden; background: var(--sand); }
.img img { width: 100%; height: 100%; object-fit: cover; display: block;
  filter: saturate(0.9) contrast(1.02); transition: transform 800ms cubic-bezier(.22,.61,.36,1); }
[data-theme="dark"] .img img { filter: saturate(0.85) contrast(1.03) brightness(0.92); }
.img.portrait img { filter: grayscale(0.85) contrast(1.05); }
/* <image-slot> replaceable images fill their rectangle exactly like <img> */
.img image-slot { position: absolute; inset: 0; width: 100%; height: 100%; display: block;
  transition: transform 800ms cubic-bezier(.22,.61,.36,1); }
.model:hover .img image-slot, .proj:hover .img image-slot,
.news-card:hover .img image-slot, .sector:hover .img image-slot { transform: scale(1.035); }
.img-cap { position: absolute; left: 0; bottom: 0; z-index: 2;
  font-family: 'JetBrains Mono', monospace; font-size: 10.5px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--on-dark); background: var(--scrim);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  padding: 8px 13px; }

/* ─── NAV ──────────────────────────────────────────────────────────── */
.nav { position: fixed; inset: 0 0 auto 0; z-index: 100; transition: background 320ms, border-color 320ms; border-bottom: 1px solid transparent; }
.nav.scrolled { background: var(--nav-bg); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); border-bottom-color: var(--line); }
.nav-bar { height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 32px; transition: height 320ms; }
.nav.scrolled .nav-bar { height: 64px; }
.nav-brand { display: flex; align-items: center; gap: 12px; color: var(--ink); }
.nav-brand img { width: 34px; height: 34px; }
.nav-brand .wm { font-family: var(--font-display); font-weight: 700; font-size: 22px; letter-spacing: -0.012em; white-space: nowrap; }
.nav-brand .wm .lt { font-weight: 340; }
.nav-links { display: flex; align-items: center; gap: 28px; }
@media (max-width: 1080px) { .nav-links { gap: 22px; } .nav-link { font-size: 13.5px; } }
.nav-link { font-size: 14px; font-weight: 500; color: var(--text-2); transition: color 200ms; letter-spacing: 0; position: relative; }
.nav-link:hover { color: var(--ink); }
.nav-link.active { color: var(--ink); }
.nav-link.active::after { content: ''; position: absolute; left: 0; right: 0; bottom: -7px; height: 1.5px; background: var(--accent); }
.nav-right { display: flex; align-items: center; gap: 18px; }

.theme-toggle { display: inline-flex; align-items: center; border: 1px solid var(--line); border-radius: 999px; padding: 3px; cursor: pointer; background: var(--surface); }
.theme-toggle button { border: 0; background: transparent; cursor: pointer; width: 30px; height: 26px; border-radius: 999px; display: inline-flex; align-items: center; justify-content: center; color: var(--text-3); transition: background 200ms, color 200ms; }
.theme-toggle button.on { background: var(--ink); color: var(--paper); }
.theme-toggle svg { width: 14px; height: 14px; }

/* ─── HERO ─────────────────────────────────────────────────────────── */
.hero { padding-top: clamp(132px, 16vw, 188px); }
.hero .eyebrow { margin-bottom: 32px; }
.hero h1 { margin: 0 0 34px; max-width: 16ch; }
.hero .lede { max-width: 52ch; margin-bottom: 40px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-figure { margin-top: clamp(56px, 7vw, 92px); position: relative; }
.hero-figure .img { aspect-ratio: 21 / 9; border: 1px solid var(--line); }
.hero-proof { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-top: 0; }
.hero-proof .cell { background: var(--paper); padding: 28px clamp(18px,2.4vw,34px); display: flex; flex-direction: column; gap: 8px; }
.hero-proof .v { font-family: var(--font-display); font-size: clamp(34px, 3.4vw, 50px); font-weight: 600; line-height: 1; letter-spacing: -0.02em; color: var(--ink); }
.hero-proof .v .u { color: var(--accent); font-size: 0.6em; }
.hero-proof .k { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; letter-spacing: 0.14em; line-height: 1.5; text-transform: uppercase; color: var(--text-3); text-wrap: balance; }

/* ─── SECTION HEAD ─────────────────────────────────────────────────── */
.sec-head { max-width: 760px; margin-bottom: clamp(44px, 5vw, 72px); }
.sec-head.wide { max-width: 940px; }
.sec-head .eyebrow { margin-bottom: 24px; }
.sec-head h2 { margin-bottom: 22px; }
.sec-head p { font-size: clamp(17px, 1.4vw, 20px); line-height: 1.58; color: var(--text-2); max-width: 60ch; }
.sec-head.center { margin-inline: auto; text-align: center; }
.sec-head.center .eyebrow { justify-content: center; }

/* ─── TRUST / META BAND ────────────────────────────────────────────── */
.metabar { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border-block: 1px solid var(--line); }
.metabar .cell { background: var(--paper); padding: 30px clamp(18px,2.4vw,34px); display: flex; flex-direction: column; gap: 7px; }
.metabar .k { font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-3); }
.metabar .v { font-size: 16px; font-weight: 600; color: var(--ink); letter-spacing: -0.01em; }
.metabar .v.serif { font-family: var(--font-display); font-weight: 600; font-size: 21px; }

/* ─── STATS ────────────────────────────────────────────────────────── */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stat { background: var(--paper); padding: 40px 32px; display: flex; flex-direction: column; gap: 12px; }
.stat .v { font-family: var(--font-display); font-size: clamp(46px, 5.2vw, 72px); font-weight: 600; line-height: 1; letter-spacing: -0.02em; color: var(--ink); }
.stat .v .u { color: var(--accent); font-size: 0.55em; }
.stat .k { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.16em; text-transform: uppercase; color: var(--text-3); }
.stat .sx { font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: 0.16em; color: var(--accent); }
.stat .t { font-family: var(--font-display); font-size: 25px; font-weight: 600; line-height: 1.12; letter-spacing: -0.02em; color: var(--ink); margin: 8px 0 0; text-wrap: balance; }
.stat p { font-size: 14px; line-height: 1.5; color: var(--text-2); margin: 4px 0 0; }

/* ─── REVEAL ───────────────────────────────────────────────────────── */
.reveal { opacity: 0; transform: translateY(20px); transition: opacity 900ms cubic-bezier(0.22,0.61,0.36,1), transform 900ms cubic-bezier(0.22,0.61,0.36,1); }
.reveal.in { opacity: 1; transform: translateY(0); }
.rd1 { transition-delay: 90ms; } .rd2 { transition-delay: 180ms; } .rd3 { transition-delay: 270ms; }
@media (prefers-reduced-motion: reduce) { .reveal { transition: none; opacity: 1; transform: none; } }

/* ─── FOOTER ───────────────────────────────────────────────────────── */
.footer { padding: clamp(64px, 7vw, 104px) 0 40px; border-top: 1px solid var(--line); background: var(--sand); }
.footer-top { display: grid; grid-template-columns: minmax(0, 2.2fr) repeat(3, minmax(0, 1fr)); gap: clamp(32px, 5vw, 72px); margin-bottom: clamp(44px, 4.5vw, 56px); align-items: start; }
.footer-brand .nav-brand { margin-bottom: 18px; }
.footer-brand .nav-brand img { width: 36px !important; height: 36px !important; }
.footer-brand p { font-size: 15px; line-height: 1.62; color: var(--text-2); max-width: 40ch; margin: 0 0 24px; }
.footer-brand .foot-tag { font-family: var(--font-display); font-size: 18px; line-height: 1.4; color: var(--ink); max-width: 22ch; margin: 0 0 30px; letter-spacing: -0.01em; }
.footer-brand .addr { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3); letter-spacing: 0.08em; line-height: 2; text-transform: uppercase; }
.footer-brand .addr .ag { display: block; }
.footer-brand .addr .ag + .ag { margin-top: 16px; }
.footer-brand .addr .ag .al { display: block; color: var(--text-2); }
.footer-brand .addr a { color: var(--text-2); text-decoration: none; transition: color .2s ease; }
.footer-brand .addr a:hover { color: var(--accent); }
.footer-col h4 { font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--text-3); margin: 0 0 20px; display: flex; align-items: center; gap: 9px; }
.footer-col h4 .marks { color: var(--accent); }
.footer-col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 13px; }
.footer-col a { font-size: 15px; color: var(--text-2); transition: color 200ms; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { padding-top: 30px; border-top: 1px solid var(--line); display: flex; justify-content: space-between; align-items: center; gap: 20px; flex-wrap: wrap; }
.footer-bottom .legal, .footer-bottom .colophon { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3); letter-spacing: 0.1em; text-transform: uppercase; }
.footer-bottom .links { display: flex; gap: 14px; }
.footer-bottom .links a:not(:first-child)::before { content: "·"; margin-right: 14px; color: var(--text-3); }
.footer-bottom .links a { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--text-3); letter-spacing: 0.08em; text-transform: uppercase; }
.footer-bottom .links a:hover { color: var(--accent); }

/* ─── RESPONSIVE ───────────────────────────────────────────────────── */
@media (max-width: 1000px) {
  .hero-proof, .metabar, .stats { grid-template-columns: repeat(2, 1fr); }
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .nav-links { display: none; }
  .hero-proof, .metabar, .stats { grid-template-columns: 1fr; }
  .footer-top { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

/* ─── MOBILE MENU (burger + slide-in sheet) ────────────────────────── */
.nav-burger { display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 44px; height: 44px; padding: 0 11px; background: var(--surface);
  border: 1px solid var(--line); border-radius: 4px; cursor: pointer; }
.nav-burger span { display: block; height: 1.5px; width: 100%; background: var(--ink);
  transition: transform .3s cubic-bezier(.22,.61,.36,1), opacity .2s ease; }
.nav-burger.open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav-burger.open span:nth-child(2) { opacity: 0; }
.nav-burger.open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
.nav-scrim { position: fixed; inset: 0; z-index: 95; background: rgba(12,13,15,.42);
  opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s; }
.nav-scrim.on { opacity: 1; visibility: visible; }
.nav-mobile { position: fixed; top: 0; right: 0; bottom: 0; z-index: 96;
  width: min(86vw, 360px); background: var(--paper); border-left: 1px solid var(--line);
  box-shadow: -30px 0 60px rgba(0,0,0,.14); padding: 100px 30px 36px;
  display: flex; flex-direction: column; transform: translateX(100%);
  transition: transform .34s cubic-bezier(.22,.61,.36,1); overflow-y: auto; }
.nav-mobile.open { transform: none; }
.nav-mobile-links { display: flex; flex-direction: column; }
.nm-link { font-family: var(--font-display); font-size: 23px; font-weight: 600;
  letter-spacing: -0.01em; color: var(--ink); padding: 15px 0;
  border-bottom: 1px solid var(--line); }
.nm-link:hover { color: var(--accent); }
.nm-cta { margin-top: 26px; justify-content: center; width: 100%; }
@media (min-width: 641px) { .nav-burger, .nav-scrim, .nav-mobile { display: none !important; } }
@media (max-width: 640px) { .nav-burger { display: flex; } }

/* ─── SUBTLE ARCHITECTURAL GRID (negative space only) ──────────────── */
:root { --grid-line: rgba(21,23,26,0.038); }
[data-theme="dark"] { --grid-line: rgba(255,255,255,0.030); }
body::before {
  content: ''; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 48px 48px;
}
body > * { position: relative; z-index: 1; }

/* ─── PRECISION: cursor crosshair + coordinate readout ─────────────── */
.precision { position: fixed; inset: 0; z-index: 90; pointer-events: none; display: none; overflow: hidden; }
.precision .vx, .precision .hz { position: absolute; background: var(--ink); opacity: 0.05; }
.precision .vx { top: 0; bottom: 0; width: 1px; transform: translateX(-50%); }
.precision .hz { left: 0; right: 0; height: 1px; transform: translateY(-50%); }
.precision .ring {
  position: absolute; left: 0; top: 0; width: 24px; height: 24px;
  margin: -12px 0 0 -12px; border: 1px solid var(--ink); border-radius: 50%;
  opacity: 0; transition: opacity 280ms ease, width 200ms cubic-bezier(.22,.61,.36,1),
    height 200ms cubic-bezier(.22,.61,.36,1), margin 200ms cubic-bezier(.22,.61,.36,1), background 200ms ease;
  will-change: transform;
}
.precision.live .ring { opacity: 0.38; }
.precision.hot .ring { width: 52px; height: 52px; margin: -26px 0 0 -26px; opacity: 0.55; background: var(--accent-soft); }
.coord {
  position: fixed; left: 0; top: 0; z-index: 91; pointer-events: none;
  transform: translate(16px, 16px); will-change: left, top;
  font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink); display: none;
  background: var(--nav-bg); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
  padding: 5px 8px; border: 1px solid var(--line);
  opacity: 0; transition: opacity 220ms ease;
}
.coord.show { opacity: 1; }
.coord b { color: var(--text-3); font-weight: 500; }
@media (hover: hover) and (pointer: fine) {
  .precision, .coord { display: block; }
}

/* ─── STICKY FILTER SUB-MENU (Work + Catalog) ──────────────────────── */
.toolbar.sticky {
  position: sticky; top: 62px; z-index: 40;
  background: var(--nav-bg); -webkit-backdrop-filter: blur(20px); backdrop-filter: blur(20px);
  padding: 15px 0; margin-bottom: clamp(32px,4vw,52px);
  border-top: 1px solid transparent; border-bottom: 1px solid var(--line);
}

/* ─── LANGUAGE SWITCHER ────────────────────────────────────────────── */
.lang { position: relative; }
.lang-btn {
  display: inline-flex; align-items: center; gap: 7px; background: transparent;
  border: 1px solid var(--line); border-radius: 999px; padding: 7px 11px; cursor: pointer;
  color: var(--text-2); font-family: 'JetBrains Mono', monospace; font-size: 11px;
  letter-spacing: 0.06em; text-transform: uppercase; transition: border-color 200ms, color 200ms;
}
.lang-btn:hover { border-color: var(--ink); color: var(--ink); }
.lang-btn svg { width: 14px; height: 14px; }
.lang-btn .chev { width: 9px; height: 9px; opacity: 0.6; }
.lang-menu {
  position: absolute; top: calc(100% + 10px); right: 0; min-width: 172px;
  background: var(--surface); border: 1px solid var(--line); border-radius: 4px;
  box-shadow: 0 16px 40px rgba(0,0,0,0.12); padding: 6px; z-index: 130;
  display: none; flex-direction: column;
}
.lang-menu.open { display: flex; }
.lang-menu button {
  text-align: left; background: transparent; border: 0; cursor: pointer; padding: 10px 12px;
  border-radius: 3px; color: var(--text); font-family: 'Manrope', sans-serif; font-size: 14px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px; transition: background 160ms;
}
.lang-menu button:hover { background: var(--sand); }
.lang-menu button .tag { font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--text-3); letter-spacing: 0.1em; }
.lang-menu button.on { color: var(--ink); font-weight: 600; }
.lang-menu button.on .tag { color: var(--accent); }
@media (max-width: 640px) { .lang { display: none; } }


/* black-footer */
.footer {
  background: #0D0E10;
  --line: rgba(255,255,255,0.12);
  --line-2: rgba(255,255,255,0.06);
  --ink: #F3F4F5;
  --text: #C2C6CB;
  --text-2: #9A9EA4;
  --text-3: #6B6F75;
  --accent: #FFFFFF;
  --accent-ink: #0D0E10;
}
.footer .nav-brand img { filter: brightness(0) invert(1); }