/* ============================================================
   REDLINE AI SYSTEMS - design system
   Palette: soot black / bone / signal red / ember
   Type:    Archivo Variable (wdth axis) · Instrument Serif · Space Mono
   ============================================================ */

:root {
  --soot: #0B0A09;
  --soot-2: #12100E;
  --bone: #F2EDE4;
  --bone-dim: rgba(242, 237, 228, 0.62);
  --bone-faint: rgba(242, 237, 228, 0.38);
  --hairline: rgba(242, 237, 228, 0.08);
  --red: #FF3524;
  --ember: #FF7A18;
  --red-glow: rgba(255, 53, 36, 0.35);

  --font-sans: "Archivo", system-ui, sans-serif;
  --font-serif: "Instrument Serif", Georgia, serif;
  --font-mono: "Space Mono", ui-monospace, monospace;

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-inout: cubic-bezier(0.83, 0, 0.17, 1);

  --gutter: clamp(20px, 5vw, 96px);
  --section-gap: clamp(120px, 16vw, 240px);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  background: var(--soot);
}

body {
  font-family: var(--font-sans);
  background: var(--soot);
  color: var(--bone);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

::selection { background: var(--red); color: var(--soot); }

img, svg, canvas { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
em { font-style: normal; }

.mono {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.red { color: var(--red); }

.serif-accent {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  letter-spacing: 0;
  text-transform: none;
}

/* ============ REVEAL CHOREOGRAPHY ============ */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.reveal.is-in { opacity: 1; transform: none; }
.reveal[data-stagger="1"] { transition-delay: 0.08s; }
.reveal[data-stagger="2"] { transition-delay: 0.16s; }
.reveal[data-stagger="3"] { transition-delay: 0.24s; }
.reveal[data-stagger="4"] { transition-delay: 0.32s; }
.reveal[data-stagger="5"] { transition-delay: 0.40s; }

/* ============ SCROLL REDLINE ============ */
.scrollbar-redline {
  position: fixed; top: 0; left: 0; right: 0; z-index: 120;
  height: 2px;
  pointer-events: none;
}
.scrollbar-redline span {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--red), var(--ember));
  box-shadow: 0 0 8px var(--red-glow);
}

/* ============ PRELOADER ============ */
.preloader {
  position: fixed; inset: 0; z-index: 200;
  background: var(--soot);
  display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 18px;
  transition: opacity 0.6s var(--ease-out), visibility 0.6s;
}
.preloader.is-done { opacity: 0; visibility: hidden; }
.preloader__svg { width: 120px; }
.preloader__arc {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: arc-fill 1.1s var(--ease-inout) forwards;
}
.preloader__needle {
  transform-origin: 50px 55px;
  transform: rotate(-90deg);
  animation: needle-sweep 1.1s var(--ease-inout) forwards;
}
.preloader__label { color: var(--bone-faint); animation: pulse 1.2s ease-in-out infinite; }
@keyframes arc-fill { to { stroke-dashoffset: 0; } }
@keyframes needle-sweep { to { transform: rotate(90deg); } }
@keyframes pulse { 50% { opacity: 0.4; } }

/* ============ CURSOR ============ */
.cursor {
  position: fixed; top: 0; left: 0; z-index: 150;
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--red);
  pointer-events: none;
  transform: translate(-50%, -50%);
  transition: width 0.25s var(--ease-out), height 0.25s var(--ease-out),
              opacity 0.25s, background 0.25s;
  opacity: 0;
  mix-blend-mode: difference;
}
.cursor.is-active { opacity: 1; }
.cursor.is-hover { width: 44px; height: 44px; background: var(--bone); }
@media (hover: none), (pointer: coarse) { .cursor { display: none; } }

/* ============ NAV ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px var(--gutter);
  transition: background 0.4s, backdrop-filter 0.4s, padding 0.4s var(--ease-out),
              border-color 0.4s;
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  padding: 12px var(--gutter);
  background: rgba(11, 10, 9, 0.72);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--hairline);
}
.nav__logo {
  display: flex; align-items: center; gap: 10px;
  font-weight: 800;
  font-stretch: 115%;
  font-size: 17px;
  letter-spacing: 0.02em;
}
.nav__logo-mark {
  width: 22px; height: 22px; flex: none;
  background:
    linear-gradient(135deg, transparent 42%, var(--red) 42%, var(--red) 58%, transparent 58%),
    var(--soot-2);
  border: 1px solid rgba(242, 237, 228, 0.18);
}
.nav__logo-text em { color: var(--red); }
.nav__links { display: flex; gap: clamp(18px, 3vw, 40px); }
.nav__links a {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--bone-dim);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s;
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px; background: var(--red);
  transform: scaleX(0); transform-origin: right;
  transition: transform 0.35s var(--ease-out);
}
.nav__links a:hover { color: var(--bone); }
.nav__links a:hover::after { transform: scaleX(1); transform-origin: left; }

.nav__burger {
  display: none;
  background: none; border: 0; cursor: pointer;
  width: 40px; height: 40px;
  flex-direction: column; align-items: center; justify-content: center; gap: 7px;
}
.nav__burger span {
  display: block; width: 24px; height: 2px;
  background: var(--bone);
  transition: transform 0.3s var(--ease-out), opacity 0.3s;
}
.nav__burger.is-open span:first-child { transform: translateY(4.5px) rotate(45deg); }
.nav__burger.is-open span:last-child { transform: translateY(-4.5px) rotate(-45deg); }

.mobilemenu {
  position: fixed; inset: 0; z-index: 90;
  background: rgba(11, 10, 9, 0.96);
  backdrop-filter: blur(20px);
  display: flex; align-items: center; justify-content: center;
  opacity: 0; visibility: hidden;
  transition: opacity 0.4s var(--ease-out), visibility 0.4s;
}
.mobilemenu.is-open { opacity: 1; visibility: visible; }
.mobilemenu nav { display: flex; flex-direction: column; gap: 28px; text-align: center; }
.mobilemenu a {
  font-size: clamp(28px, 8vw, 40px);
  font-weight: 700; font-stretch: 110%;
  letter-spacing: -0.01em;
}
.mobilemenu__cta { color: var(--red); }

/* ============ BUTTONS ============ */
.btn {
  position: relative;
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-mono);
  font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 16px 28px;
  border: 1px solid rgba(242, 237, 228, 0.22);
  overflow: hidden;
  transition: color 0.35s var(--ease-out), border-color 0.35s;
  white-space: nowrap;
}
.btn::before {
  content: ""; position: absolute; inset: 0;
  background: var(--red);
  transform: translateY(101%);
  transition: transform 0.4s var(--ease-out);
}
.btn > * { position: relative; z-index: 1; }
.btn:hover { color: var(--soot); border-color: var(--red); }
.btn:hover::before { transform: translateY(0); }
.btn--primary { background: var(--red); border-color: var(--red); color: var(--soot); }
.btn--primary::before { background: var(--bone); }
.btn--primary:hover { border-color: var(--bone); }
.btn--ghost { color: var(--bone); }
.btn--small { padding: 10px 20px; font-size: 11px; }
.btn--big { padding: 20px 40px; font-size: 13px; }
.btn__arrow { transition: transform 0.35s var(--ease-out); }
.btn:hover .btn__arrow { transform: translateX(5px); }

/* ============ HERO ============ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex; flex-direction: column; justify-content: center;
  padding: 120px var(--gutter) 80px;
  overflow: hidden;
}
.hero__canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  z-index: 0;
}
.hero__scrim {
  position: absolute; inset: 0; z-index: 1;
  background:
    radial-gradient(ellipse 90% 70% at 30% 55%, transparent 30%, rgba(11, 10, 9, 0.55) 100%),
    linear-gradient(to bottom, rgba(11, 10, 9, 0.35), transparent 30%, transparent 70%, var(--soot) 100%);
  pointer-events: none;
}
.hero__content { position: relative; z-index: 2; max-width: 1360px; }
.hero__kicker {
  display: flex; align-items: center; gap: 12px;
  color: var(--bone-dim);
  margin-bottom: clamp(24px, 4vh, 44px);
}
.hero__kicker-dot {
  width: 7px; height: 7px; border-radius: 50%; flex: none;
  background: var(--red);
  box-shadow: 0 0 12px var(--red);
  animation: pulse 2s ease-in-out infinite;
}
.hero__title { line-height: 0.92; margin-bottom: clamp(28px, 4vh, 48px); }
.hero__title-line { display: block; overflow: hidden; }
.hero__title-word {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 1.1s var(--ease-inout);
}
.is-loaded .hero__title-word { transform: translateY(0); }
.hero__title-line:nth-child(2) .hero__title-word { transition-delay: 0.12s; }
.hero__title .serif-accent {
  font-size: clamp(30px, 4.8vw, 64px);
  color: var(--bone-dim);
}
.hero__title-word--big {
  /* base size is a fallback; js/main.js fits this line edge-to-edge */
  font-size: clamp(56px, 10.5vw, 175px);
  font-weight: 850;
  font-stretch: 120%;
  letter-spacing: -0.025em;
  text-transform: uppercase;
  white-space: nowrap;
}
.hero__title-word--big .red {
  background: linear-gradient(100deg, var(--red) 30%, var(--ember) 85%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__sub {
  max-width: 560px;
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--bone-dim);
  margin-bottom: clamp(32px, 5vh, 52px);
}
.hero__ctas { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__meta {
  position: absolute; left: var(--gutter); right: var(--gutter); bottom: 28px;
  z-index: 2;
  display: flex; justify-content: space-between; align-items: center;
  color: var(--bone-faint);
}
.hero__scrollcue { display: flex; align-items: center; gap: 10px; }
.hero__scrollcue-line {
  display: inline-block; width: 48px; height: 1px;
  background: var(--bone-faint);
  position: relative; overflow: hidden;
}
.hero__scrollcue-line::after {
  content: ""; position: absolute; inset: 0;
  background: var(--red);
  animation: scroll-line 2s var(--ease-inout) infinite;
}
@keyframes scroll-line {
  0% { transform: translateX(-100%); }
  60%, 100% { transform: translateX(100%); }
}

/* ============ MARQUEE ============ */
.marquee {
  border-top: 1px solid var(--hairline);
  border-bottom: 1px solid var(--hairline);
  padding: 22px 0;
  overflow: hidden;
  background: var(--soot-2);
}
.marquee__track { display: flex; width: max-content; will-change: transform; }
.marquee__group {
  display: flex; align-items: center;
  font-weight: 700; font-stretch: 118%;
  font-size: clamp(15px, 1.8vw, 22px);
  letter-spacing: 0.08em;
  white-space: nowrap;
  padding-right: 24px;
  color: var(--bone-dim);
}
.marquee__group i {
  font-style: normal; color: var(--red);
  margin: 0 24px; font-size: 0.7em;
}

/* ============ SECTIONS ============ */
.section {
  padding: var(--section-gap) var(--gutter) 0;
  max-width: 1560px;
  margin: 0 auto;
}
.section__head { max-width: 1220px; margin-bottom: clamp(56px, 8vw, 110px); }
.section__index {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--red);
  margin-bottom: 24px;
}
.section__index::before {
  content: ""; width: 32px; height: 1px; background: var(--red);
}
.section__title {
  font-size: clamp(34px, 4.8vw, 72px);
  font-weight: 800; font-stretch: 112%;
  line-height: 1.02;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}
.section__title .serif-accent {
  font-size: 0.92em;
  font-weight: 400;
  text-transform: none;
}
.section__lede {
  margin-top: 28px;
  max-width: 600px;
  font-size: clamp(15px, 1.4vw, 18px);
  color: var(--bone-dim);
}

/* ============ 01 LEAK ============ */
.leak__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
.stat {
  background: var(--soot);
  padding: clamp(28px, 4vw, 56px);
  transition: background 0.4s;
}
.stat:hover { background: var(--soot-2); }
.stat__number {
  font-size: clamp(56px, 7vw, 110px);
  font-weight: 850; font-stretch: 115%;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--red);
  margin-bottom: 20px;
  font-variant-numeric: tabular-nums;
}
.stat__label { color: var(--bone-dim); font-size: 15px; max-width: 34ch; }
.leak__footnote { margin-top: 28px; color: var(--bone-faint); }

/* ============ 02 SYSTEMS ============ */
.systems__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
}
.syscard {
  position: relative;
  background: var(--soot);
  padding: clamp(28px, 3vw, 44px);
  display: flex; flex-direction: column; gap: 18px;
  min-height: 340px;
  overflow: hidden;
  transition: background 0.4s;
}
.syscard::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--red), var(--ember));
  transform: scaleX(0); transform-origin: left;
  transition: transform 0.5s var(--ease-out);
}
.syscard:hover { background: var(--soot-2); }
.syscard:hover::after { transform: scaleX(1); }
.syscard__top { display: flex; justify-content: space-between; align-items: flex-start; }
.syscard__num { color: var(--bone-faint); }
.syscard__icon {
  width: 40px; height: 40px; color: var(--bone-dim);
  transition: color 0.35s, transform 0.35s var(--ease-out);
}
.syscard:hover .syscard__icon { color: var(--red); transform: translateY(-3px); }
.syscard__title {
  font-size: clamp(22px, 2vw, 28px);
  font-weight: 750; font-stretch: 110%;
  letter-spacing: -0.01em;
  margin-top: auto;
}
.syscard__body { color: var(--bone-dim); font-size: 14.5px; }
.syscard__tag { color: var(--red); font-size: 10px; }

/* ============ 03 INSTALL ============ */
.install__steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(32px, 4vw, 64px);
  padding-top: 40px;
}
.install__line {
  position: absolute; top: 0; left: 0; right: 0;
  height: 1px; background: var(--hairline);
}
.install__line-fill {
  display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--red), var(--ember));
  transition: width 0.2s linear;
}
.step__num { display: block; color: var(--red); margin-bottom: 18px; }
.step__title {
  font-size: clamp(24px, 2.4vw, 34px);
  font-weight: 780; font-stretch: 112%;
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}
.step__body { color: var(--bone-dim); font-size: 15px; }

/* ============ 04 DIFFERENCE ============ */
.difference__grid {
  display: grid;
  grid-template-columns: minmax(300px, 520px) 1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: center;
}
.gauge__svg { width: 100%; transition: filter 0.5s; }
.gauge.is-hot .gauge__svg { filter: drop-shadow(0 0 24px rgba(255, 53, 36, 0.35)); }
.gauge__caption {
  text-align: center; margin-top: 18px;
  color: var(--bone-faint);
}
.gauge__rpm {
  fill: var(--bone);
  font-size: 26px;
  font-weight: 700;
}
.gauge__unit { fill: var(--bone-faint); font-size: 7px; letter-spacing: 0.14em; }
#gauge-needle { transform-origin: 150px 170px; }

.difference__rows { display: flex; flex-direction: column; }
.diffrow {
  display: flex; justify-content: space-between; align-items: baseline;
  gap: 24px;
  padding: 22px 0;
  border-bottom: 1px solid var(--hairline);
}
.diffrow:first-child { border-top: 1px solid var(--hairline); }
.diffrow__label { font-size: clamp(15px, 1.4vw, 18px); font-weight: 500; }
.diffrow__values { display: flex; align-items: baseline; gap: 14px; white-space: nowrap; }
.diffrow__before { color: var(--bone-faint); text-decoration: line-through; }
.diffrow__arrow { color: var(--bone-faint); }
.diffrow__after { font-weight: 700; font-variant-numeric: tabular-nums; font-size: 15px; }
.difference__note { margin-top: 20px; color: var(--bone-faint); font-size: 13px; }

/* ============ 05 THE OPERATOR ============ */
.operator__grid {
  display: grid;
  grid-template-columns: minmax(300px, 440px) 1fr;
  gap: clamp(40px, 6vw, 100px);
  align-items: start;
}
.operator__photo { position: sticky; top: 100px; }
.operator__photo-frame {
  position: relative;
  background: var(--bone);
  overflow: hidden;
}
.operator__photo-frame::after {
  content: "";
  position: absolute; inset: 0;
  background:
    linear-gradient(to top, rgba(11, 10, 9, 0.28), transparent 35%),
    radial-gradient(ellipse 120% 100% at 50% 0%, transparent 60%, rgba(11, 10, 9, 0.14) 100%);
  pointer-events: none;
}
.operator__photo-frame img {
  width: 100%;
  height: auto;
  filter: contrast(1.04) saturate(1.05) brightness(0.99);
  mix-blend-mode: multiply;
}
.operator__caption {
  display: flex; flex-direction: column; gap: 6px;
  padding: 18px 0 0;
  border-bottom: 2px solid var(--red);
  padding-bottom: 16px;
}
.operator__name {
  font-weight: 800; font-stretch: 115%;
  font-size: 18px; letter-spacing: 0.03em;
}
.operator__role { color: var(--red); font-size: 10px; }
.operator__body {
  margin-top: 34px;
  display: flex; flex-direction: column; gap: 18px;
  max-width: 640px;
}
.operator__body p { color: var(--bone-dim); font-size: clamp(15px, 1.3vw, 17px); }
.operator__body strong { color: var(--bone); font-weight: 650; }
.operator .section__head { margin-bottom: 0; }
.operator .section__title { margin-top: 0; }
.operator__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  margin-top: 44px;
  max-width: 720px;
}
.opstat {
  background: var(--soot);
  padding: 22px 20px;
  display: flex; flex-direction: column; gap: 8px;
}
.opstat__num {
  font-size: clamp(30px, 3vw, 44px);
  font-weight: 850; font-stretch: 115%;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--red);
  font-variant-numeric: tabular-nums;
}
.opstat__label { color: var(--bone-faint); font-size: 9.5px; }

/* ============ 06 STRAIGHT ANSWERS ============ */
.faq__list {
  max-width: 880px;
  border-top: 1px solid var(--hairline);
}
.faqitem { border-bottom: 1px solid var(--hairline); }
.faqitem__q {
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  padding: 26px 4px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 1.6vw, 20px);
  font-weight: 650; font-stretch: 108%;
  letter-spacing: -0.005em;
  transition: color 0.25s;
}
.faqitem__q::-webkit-details-marker { display: none; }
.faqitem__q:hover { color: var(--red); }
.faqitem__marker {
  position: relative;
  width: 16px; height: 16px; flex: none;
}
.faqitem__marker::before,
.faqitem__marker::after {
  content: ""; position: absolute; background: var(--red);
  transition: transform 0.35s var(--ease-out);
}
.faqitem__marker::before { left: 0; top: 7px; width: 16px; height: 2px; }
.faqitem__marker::after { left: 7px; top: 0; width: 2px; height: 16px; }
.faqitem[open] .faqitem__marker::after { transform: scaleY(0); }
.faqitem__a { padding: 0 4px 28px; max-width: 68ch; }
.faqitem__a p { color: var(--bone-dim); font-size: clamp(14.5px, 1.3vw, 16.5px); }
.faqitem[open] .faqitem__a { animation: faq-in 0.45s var(--ease-out); }
@keyframes faq-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ============ 05 IGNITION ============ */
.ignition {
  position: relative;
  text-align: center;
  padding-bottom: var(--section-gap);
  overflow: hidden;
  max-width: none;
}
.ignition__canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  z-index: 0; pointer-events: none;
}
.ignition__content { position: relative; z-index: 1; max-width: 800px; margin: 0 auto; }
.ignition .section__index { justify-content: center; }
.ignition__title {
  font-size: clamp(56px, 11vw, 170px);
  font-weight: 850; font-stretch: 120%;
  letter-spacing: -0.025em;
  line-height: 0.95;
  margin: 20px 0 32px;
}
.ignition__title .serif-accent {
  font-size: 0.55em;
  color: var(--bone-dim);
  vertical-align: 0.12em;
  margin-right: 0.1em;
}
.ignition__sub {
  max-width: 520px; margin: 0 auto 44px;
  color: var(--bone-dim);
  font-size: clamp(15px, 1.4vw, 18px);
}
.ignition__mail { margin-top: 28px; color: var(--bone-faint); }
.ignition__mail a { color: var(--bone-dim); border-bottom: 1px solid var(--red); padding-bottom: 2px; transition: color 0.25s; }
.ignition__mail a:hover { color: var(--bone); }

/* ============ FOOTER ============ */
.footer {
  border-top: 1px solid var(--hairline);
  padding: 0 var(--gutter) 40px;
  overflow: hidden;
}
.footer__word {
  font-size: clamp(80px, 16.5vw, 300px);
  font-weight: 900; font-stretch: 125%;
  letter-spacing: -0.02em;
  line-height: 1;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(242, 237, 228, 0.14);
  user-select: none;
  margin: 40px 0;
  transition: -webkit-text-stroke-color 0.6s;
}
.footer__word:hover { -webkit-text-stroke-color: var(--red-glow); }
.footer__row {
  display: flex; justify-content: space-between; align-items: flex-start;
  gap: 32px; flex-wrap: wrap;
  padding-top: 32px;
  border-top: 1px solid var(--hairline);
}
.footer__brand { font-weight: 800; font-stretch: 115%; letter-spacing: 0.02em; }
.footer__brand em { color: var(--red); }
.footer__tag { color: var(--bone-faint); font-size: 13px; margin-top: 6px; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links a {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--bone-dim); transition: color 0.25s;
}
.footer__links a:hover { color: var(--red); }
.footer__meta {
  display: flex; flex-direction: column; gap: 8px;
  color: var(--bone-faint); text-align: right;
}
.footer__meta a { color: var(--bone-dim); }
.footer__meta a:hover { color: var(--red); }

/* ============ RESPONSIVE ============ */
@media (max-width: 1024px) {
  .systems__grid { grid-template-columns: repeat(2, 1fr); }
  .difference__grid { grid-template-columns: 1fr; }
  .gauge { max-width: 420px; margin: 0 auto; }
  .operator__grid { grid-template-columns: 1fr; }
  .operator__photo { position: static; max-width: 440px; }
}
@media (max-width: 760px) {
  .nav__links, .nav .btn { display: none; }
  .nav__burger { display: flex; }
  .leak__stats { grid-template-columns: 1fr; }
  .systems__grid { grid-template-columns: 1fr; }
  .syscard { min-height: 0; }
  .install__steps { grid-template-columns: 1fr; }
  .install__line { display: none; }
  .diffrow { flex-direction: column; align-items: flex-start; gap: 8px; }
  .operator__stats { grid-template-columns: 1fr; }
  .footer__meta { text-align: left; }
}

/* ============ POSTER MODE (?og) ============ */
.og-mode .preloader, .og-mode .cursor, .og-mode .scrollbar-redline { display: none !important; }
.og-mode .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
.og-mode .hero__title-word { transform: none !important; transition: none !important; }

/* ============ REDUCED MOTION ============ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__title-word { transform: none; }
  .cursor { display: none; }
}