:root {
  --ink: #061a3d;
  --muted: #61717b;
  --paper: #fbfcfc;
  --surface: #ffffff;
  --line: #dce8ea;
  --teal: #009f9b;
  --teal-dark: #007b78;
  --teal-soft: #e9fbfa;
  --black: #050505;
  --shadow: 0 20px 70px rgba(6, 26, 61, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Avenir Next", Avenir, "Helvetica Neue", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

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

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(20px, 4vw, 56px);
  color: var(--ink);
  background: linear-gradient(180deg, rgba(251, 252, 252, 0.96), rgba(251, 252, 252, 0.72) 68%, rgba(251, 252, 252, 0));
  backdrop-filter: blur(10px);
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 16px;
  font-size: clamp(32px, 3.4vw, 46px);
  font-weight: 300;
  line-height: 1;
}

.brand-teal {
  color: var(--teal);
}

.brand-black {
  color: var(--black);
}

.brand-mark {
  width: clamp(58px, 5.2vw, 76px);
  height: clamp(58px, 5.2vw, 76px);
  border: 1px solid rgba(0, 159, 155, 0.26);
  border-radius: 12px;
  background: #fff;
  object-fit: cover;
}

.nav {
  gap: 22px;
  font-size: 14px;
  color: rgba(6, 26, 61, 0.74);
}

.nav a:hover {
  color: var(--teal);
}

.nav-cta {
  padding: 9px 13px;
  border: 1px solid rgba(0, 159, 155, 0.34);
  border-radius: 7px;
  color: var(--teal);
  background: rgba(255, 255, 255, 0.72);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  background:
    radial-gradient(circle at 72% 32%, rgba(0, 159, 155, 0.12), transparent 34%),
    linear-gradient(135deg, #ffffff 0%, #fbfcfc 58%, #eefafa 100%);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(251, 252, 252, 0.86), rgba(251, 252, 252, 0.2) 48%, rgba(251, 252, 252, 0.92));
}

.hero-content {
  position: relative;
  width: min(1120px, calc(100% - 40px));
  margin: clamp(120px, 14vh, 150px) auto 64px;
  color: var(--ink);
  text-align: center;
}

.eyebrow,
.section-label {
  margin: 0 0 16px;
  color: var(--teal);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  max-width: 860px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 22px;
  font-size: clamp(44px, 7vw, 84px);
  font-weight: 300;
  line-height: 1;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(30px, 4.6vw, 54px);
  font-weight: 300;
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0;
}

.hero-copy {
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 28px;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-screenshot {
  width: min(100%, 980px);
  aspect-ratio: 16 / 9;
  margin: 28px auto 30px;
  border: 1px solid rgba(6, 26, 61, 0.14);
  border-radius: 12px;
  background-image: url("/landing/intaxication-product.svg");
  background-position: center;
  background-size: cover;
  box-shadow: var(--shadow);
}

.hero-actions,
.final-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 7px;
  font-weight: 500;
}

.button.primary {
  color: #fff;
  background: var(--teal);
}

.button.primary:hover {
  background: var(--teal-dark);
}

.button.secondary {
  color: var(--ink);
  border: 1px solid rgba(6, 26, 61, 0.16);
  background: rgba(255, 255, 255, 0.76);
}

.section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: clamp(66px, 9vw, 112px) 0;
}

.intro-grid,
.setup-layout,
.privacy,
.intelligence-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.82fr);
  gap: clamp(32px, 6vw, 72px);
  align-items: start;
}

.intro p,
.intelligence p,
.setup p,
.final-cta p {
  color: var(--muted);
  font-size: 19px;
}

.band {
  width: 100%;
  max-width: none;
  padding-left: max(20px, calc((100vw - 1120px) / 2));
  padding-right: max(20px, calc((100vw - 1120px) / 2));
  background: var(--teal-soft);
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.steps article,
.privacy-point,
.faq details {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.steps article {
  min-height: 234px;
  padding: 24px;
}

.steps span {
  display: inline-block;
  margin-bottom: 38px;
  color: var(--teal);
  font-weight: 500;
}

.steps p,
.privacy-point p,
.faq p {
  color: var(--muted);
}

.privacy-grid,
.signal-list {
  display: grid;
  gap: 14px;
}

.privacy-point,
.signal-list article {
  padding: 22px;
}

.signal-list article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
}

.signal-list p {
  margin-bottom: 0;
  font-size: 16px;
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding: 17px 18px 17px 46px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 21px;
  width: 12px;
  height: 7px;
  border-left: 3px solid var(--teal);
  border-bottom: 3px solid var(--teal);
  transform: rotate(-45deg);
}

.faq-list {
  display: grid;
  gap: 12px;
}

.faq details {
  padding: 0;
}

.faq summary {
  cursor: pointer;
  padding: 21px 24px;
  font-weight: 500;
}

.faq details p {
  max-width: 850px;
  padding: 0 24px 22px;
}

.final-cta {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto 56px;
  justify-content: space-between;
  padding: clamp(30px, 5vw, 48px);
  border-radius: 8px;
  color: #fff;
  background: var(--ink);
  box-shadow: var(--shadow);
}

.final-cta h2 {
  margin-bottom: 12px;
  font-size: clamp(28px, 4vw, 44px);
}

.final-cta p {
  max-width: 680px;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.78);
}

@media (max-width: 900px) {
  .site-header {
    position: absolute;
  }

  .nav {
    display: none;
  }

  .hero {
    min-height: auto;
  }

  .hero-overlay {
    background: linear-gradient(180deg, rgba(251, 252, 252, 0.74), rgba(251, 252, 252, 0.96) 46%, #fbfcfc 100%);
  }

  .hero-content {
    width: min(100% - 40px, 680px);
    margin: 120px auto 42px;
  }

  .hero-screenshot {
    margin-top: 24px;
    border-radius: 10px;
  }

  .intro-grid,
  .setup-layout,
  .privacy,
  .intelligence-layout {
    grid-template-columns: 1fr;
  }

  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 620px) {
  .hero {
    min-height: 760px;
  }

  .button {
    width: 100%;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .steps article {
    min-height: 0;
  }

  .steps span {
    margin-bottom: 18px;
  }

  .final-cta {
    align-items: stretch;
  }
}