:root {
  --bg: #050604;
  --bg-elevated: #0c0e0a;
  --panel: #12150f;
  --text: #f3f1ea;
  --muted: #c2b9a8;
  --soft: #817967;
  --line: rgba(232, 222, 196, 0.13);
  --line-strong: rgba(232, 222, 196, 0.24);
  --accent: #5c6f37;
  --accent-strong: #a3ad62;
  --earth: #766142;
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.5);
  --radius: 8px;
  --container: 1180px;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  font-family: Inter, Arial, sans-serif;
  line-height: 1.5;
  background:
    radial-gradient(circle at 82% 5%, rgba(118, 97, 66, 0.2), transparent 30rem),
    radial-gradient(circle at 18% 8%, rgba(92, 111, 55, 0.22), transparent 29rem),
    linear-gradient(180deg, #060704 0%, var(--bg) 40%, #080906 100%);
  overflow-x: hidden;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.017) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9), transparent 76%);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.page-shell {
  width: min(calc(100% - 40px), var(--container));
  margin-inline: auto;
}

.section-pad {
  padding: clamp(78px, 11vw, 150px) 0;
}

.section-raised {
  background:
    linear-gradient(180deg, rgba(163, 173, 98, 0.04), rgba(255, 255, 255, 0.008)),
    rgba(12, 14, 10, 0.94);
  border-block: 1px solid rgba(232, 222, 196, 0.07);
}

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 20;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  min-height: var(--header-height);
  padding: 0 clamp(18px, 4vw, 52px);
  background: rgba(5, 6, 4, 0.68);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(18px);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  width: fit-content;
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-header__brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.site-header__nav {
  display: flex;
  gap: clamp(14px, 3vw, 32px);
  color: rgba(243, 241, 234, 0.76);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--accent-strong);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--text);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2.25rem, 5.2vw, 5.2rem);
  font-weight: 890;
}

h3 {
  margin-bottom: 10px;
  font-size: clamp(1.08rem, 1.7vw, 1.45rem);
}

p {
  color: var(--muted);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button--primary {
  background: linear-gradient(135deg, var(--accent-strong), var(--accent) 58%, #2f3b1d);
  border-color: rgba(163, 173, 98, 0.46);
  color: #fbfaf4;
  box-shadow: 0 20px 60px rgba(92, 111, 55, 0.24);
}

.button--secondary {
  background: rgba(255, 255, 255, 0.035);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100svh;
  align-items: center;
  padding: calc(var(--header-height) + 42px) 0 54px;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__bg::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(5, 6, 4, 0.94), rgba(5, 6, 4, 0.55), rgba(5, 6, 4, 0.88)),
    linear-gradient(180deg, rgba(5, 6, 4, 0.12), var(--bg));
}

.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
  transform: scale(1.02);
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 850px;
}

.hero__title {
  margin: 0 0 18px;
  max-width: 8ch;
  font-size: clamp(4.6rem, 13vw, 11rem);
  font-weight: 940;
  text-transform: uppercase;
}

.hero__subtitle {
  max-width: 760px;
  margin-bottom: 14px;
  color: var(--text);
  font-size: clamp(1.45rem, 2.7vw, 2.5rem);
  font-weight: 780;
  line-height: 1.1;
}

.hero__text {
  max-width: 650px;
  margin-bottom: 30px;
  font-size: clamp(1.02rem, 1.55vw, 1.26rem);
}

.hero__actions,
.final-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.warning__inner,
.air-system__inner,
.limits__inner {
  max-width: 900px;
}

.warning__inner h2,
.air-system__inner h2 {
  max-width: 840px;
}

.warning__inner p,
.air-system__inner p {
  max-width: 760px;
  font-size: clamp(1.05rem, 1.6vw, 1.26rem);
}

.air-system__inner {
  padding-block: clamp(10px, 2vw, 22px);
  border-top: 1px solid rgba(232, 222, 196, 0.14);
  border-bottom: 1px solid rgba(232, 222, 196, 0.08);
}

.system__inner,
.consult__inner {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(28px, 5vw, 72px);
  align-items: center;
}

.image-panel {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #0b0d09;
  box-shadow: var(--shadow);
}

.image-panel img {
  width: 100%;
  min-height: 460px;
  object-fit: cover;
}

.section-heading {
  max-width: 840px;
  margin: 0 auto clamp(34px, 5vw, 58px);
  text-align: center;
}

.component-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.component-card,
.benefit-card,
.test-card {
  min-height: 100%;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.032);
}

.component-card img {
  width: 100%;
  aspect-ratio: 1.16;
  margin-bottom: 20px;
  border-radius: 6px;
  object-fit: cover;
  background: rgba(0, 0, 0, 0.2);
}

.component-card span,
.benefit-card span,
.test-card span {
  display: block;
  margin-bottom: 9px;
  color: var(--accent-strong);
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.component-card strong {
  display: block;
  margin-top: 14px;
  color: var(--text);
}

.test-grid,
.benefit-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.benefit-grid {
  grid-template-columns: repeat(4, 1fr);
}

.test-card strong {
  color: var(--text);
}

.consult__inner {
  align-items: start;
}

.consult-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(163, 173, 98, 0.08), rgba(255, 255, 255, 0.025)),
    rgba(8, 9, 6, 0.82);
  box-shadow: var(--shadow);
}

.consult-form label {
  display: grid;
  gap: 8px;
  color: #f1eddf;
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.consult-form__wide {
  grid-column: 1 / -1;
}

.consult-form input,
.consult-form textarea {
  width: 100%;
  min-height: 46px;
  padding: 12px 14px;
  border: 1px solid rgba(232, 222, 196, 0.16);
  border-radius: 6px;
  outline: 0;
  background: rgba(5, 6, 4, 0.82);
  color: var(--text);
  font-size: 0.95rem;
  letter-spacing: 0;
  text-transform: none;
}

.consult-form textarea {
  min-height: 128px;
  resize: vertical;
}

.consult-form button {
  width: fit-content;
  border: 0;
  cursor: pointer;
}

.final-cta {
  position: relative;
  display: grid;
  min-height: 620px;
  align-items: center;
  overflow: hidden;
  padding: clamp(90px, 14vw, 170px) 0;
}

.final-cta__bg {
  position: absolute;
  inset: 0;
}

.final-cta__bg::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(5, 6, 4, 0.92), rgba(5, 6, 4, 0.58), rgba(5, 6, 4, 0.9)),
    linear-gradient(180deg, rgba(5, 6, 4, 0.2), var(--bg));
}

.final-cta__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.final-cta__content {
  position: relative;
  z-index: 1;
  max-width: 780px;
}

.final-cta__content p {
  max-width: 640px;
  margin-bottom: 28px;
  font-size: 1.12rem;
}

.thanks {
  position: relative;
  display: grid;
  min-height: 100svh;
  align-items: center;
  overflow: hidden;
  padding: clamp(80px, 12vw, 150px) 0;
}

.thanks__bg {
  position: absolute;
  inset: 0;
}

.thanks__bg::after {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgba(5, 6, 4, 0.94), rgba(5, 6, 4, 0.68), rgba(5, 6, 4, 0.92)),
    linear-gradient(180deg, rgba(5, 6, 4, 0.16), var(--bg));
}

.thanks__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.thanks__content {
  position: relative;
  z-index: 1;
  max-width: 820px;
  padding: clamp(24px, 5vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(135deg, rgba(163, 173, 98, 0.1), rgba(255,255,255,0.025)),
    rgba(8, 9, 6, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.thanks__brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 34px;
  font-size: 0.82rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.thanks__brand img {
  width: 38px;
  height: 38px;
  object-fit: contain;
}

.thanks h1 {
  margin: 0 0 20px;
  font-size: clamp(3.4rem, 8vw, 7.2rem);
  font-weight: 940;
  text-transform: uppercase;
}

.thanks p {
  max-width: 660px;
  margin-bottom: 30px;
  font-size: clamp(1.02rem, 1.7vw, 1.24rem);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 620ms ease, transform 620ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .component-grid,
  .benefit-grid,
  .test-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .site-header {
    grid-template-columns: 1fr;
    gap: 12px;
    padding-block: 14px;
  }

  .site-header__nav {
    display: none;
  }

  .hero {
    padding-top: 110px;
  }

  .system__inner,
  .consult__inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 700px) {
  .page-shell {
    width: min(calc(100% - 28px), var(--container));
  }

  .section-pad {
    padding: 68px 0;
  }

  .hero__title {
    font-size: clamp(3.6rem, 17vw, 7rem);
  }

  .hero__actions,
  .final-cta__actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .component-grid,
  .benefit-grid,
  .test-grid,
  .consult-form {
    grid-template-columns: 1fr;
  }

  .image-panel img {
    min-height: 320px;
  }

  .consult-form button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}