:root {
  --ink: #111417;
  --muted: #5b626b;
  --surface: #f5f7f6;
  --panel: #ffffff;
  --line: #dbe2df;
  --green: #1f9d55;
  --green-dark: #177a43;
  --cyan: #1598b8;
  --amber: #d9911c;
  --dark: #101315;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

button,
input {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 10;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 40px;
  color: #fff;
  background: linear-gradient(180deg, rgba(0, 0, 0, 0.62), rgba(0, 0, 0, 0));
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 750;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border: 3px solid var(--green);
  border-right-color: var(--cyan);
  border-radius: 50%;
  box-shadow: 0 0 18px rgba(31, 157, 85, 0.5);
}

.nav-links {
  display: flex;
  gap: 24px;
  font-size: 0.95rem;
  font-weight: 650;
}

.nav-links a {
  opacity: 0.88;
}

.nav-links a:hover {
  opacity: 1;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #fff;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
  object-position: center;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(0, 0, 0, 0.76) 0%, rgba(0, 0, 0, 0.5) 38%, rgba(0, 0, 0, 0.08) 74%),
    linear-gradient(0deg, rgba(0, 0, 0, 0.35), rgba(0, 0, 0, 0.04));
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(720px, calc(100% - 48px));
  margin-left: clamp(24px, 8vw, 112px);
  padding-top: 56px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--green);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3,
p,
li,
label {
  overflow-wrap: anywhere;
}

h1 {
  margin: 0;
  max-width: 11ch;
  font-size: clamp(2.8rem, 5.4rem, 5.4rem);
  line-height: 0.96;
  letter-spacing: 0;
}

.hero-copy,
.lead {
  max-width: 640px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.18rem;
}

.hero-copy {
  margin: 24px 0 0;
}

.hero-actions,
.activation-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid transparent;
  border-radius: 6px;
  font-weight: 750;
  cursor: pointer;
}

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

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

.button-secondary {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.42);
  background: rgba(255, 255, 255, 0.09);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border-bottom: 1px solid var(--line);
}

.metrics div {
  min-height: 116px;
  padding: 24px clamp(18px, 4vw, 44px);
  background: var(--panel);
}

.metrics strong {
  display: block;
  font-size: 1.65rem;
  line-height: 1.1;
}

.metrics span {
  display: block;
  margin-top: 8px;
  color: var(--muted);
}

.section,
.split-section {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 88px 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 2.7rem, 2.7rem);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.feature-grid,
.steps,
.activation-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.feature-card,
.steps article,
.activation-steps article,
.checkout-box,
.activation-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.feature-card,
.steps article,
.activation-steps article {
  min-height: 190px;
  padding: 24px;
}

.feature-card p,
.steps p,
.copy-block p,
.buy-copy p,
.legal-section p,
.small,
.activation-steps p {
  margin: 0;
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 56px;
  border-top: 1px solid var(--line);
}

.copy-block {
  display: grid;
  gap: 18px;
  font-size: 1.08rem;
}

.install-band {
  width: 100%;
  max-width: none;
  padding-left: max(20px, calc((100vw - 1120px) / 2));
  padding-right: max(20px, calc((100vw - 1120px) / 2));
  background: #eaf1ee;
}

.steps span,
.activation-steps span {
  display: inline-flex;
  margin-bottom: 22px;
  color: var(--amber);
  font-weight: 850;
}

.buy-section {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 32px;
  align-items: start;
}

.buy-copy p {
  margin-top: 18px;
}

.check-list {
  margin: 22px 0 0;
  padding-left: 20px;
  color: var(--ink);
}

.check-list li {
  margin: 8px 0;
}

.checkout-box {
  display: grid;
  gap: 14px;
  padding: 24px;
}

.checkout-box label,
.activation-form label {
  color: var(--muted);
  font-weight: 700;
}

input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0 12px;
  color: var(--ink);
  background: #fff;
}

.price {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.price span {
  color: var(--muted);
}

.price strong {
  font-size: 1.6rem;
}

.small {
  font-size: 0.88rem;
}

.log {
  min-height: 110px;
  margin: 0;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: #dce8e2;
  background: #09110d;
  white-space: pre-wrap;
  overflow: auto;
}

.legal-section {
  border-top: 1px solid var(--line);
}

.legal-section p {
  max-width: 780px;
  margin-top: 18px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 40px;
  color: rgba(255, 255, 255, 0.72);
  background: var(--dark);
  font-size: 0.9rem;
}

.site-footer a {
  color: #fff;
  font-weight: 700;
}

.activation-body {
  color: #f5f7fb;
  background: #101315;
}

.activation-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 32px 20px;
}

.activation-panel {
  width: min(920px, 100%);
  padding: 32px;
  color: var(--ink);
}

.activation-panel h1 {
  max-width: none;
  font-size: clamp(2.2rem, 3rem, 3rem);
}

.activation-panel .lead {
  color: var(--muted);
}

.activation-form {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.activation-actions .button-secondary {
  color: var(--ink);
  border-color: var(--line);
  background: #fff;
}

.activation-steps {
  margin-top: 28px;
}

@media (max-width: 820px) {
  .site-header {
    min-height: 64px;
    padding: 0 20px;
  }

  .nav-links {
    display: none;
  }

  .hero {
    min-height: 86vh;
  }

  .hero-image {
    object-position: 58% center;
  }

  .hero-overlay {
    background:
      linear-gradient(90deg, rgba(0, 0, 0, 0.78), rgba(0, 0, 0, 0.34)),
      linear-gradient(0deg, rgba(0, 0, 0, 0.46), rgba(0, 0, 0, 0.05));
  }

  .hero-content {
    width: min(560px, calc(100% - 40px));
    margin-left: 20px;
  }

  h1 {
    font-size: clamp(2.4rem, 4rem, 4rem);
  }

  .hero-copy {
    font-size: 1.05rem;
  }

  .metrics,
  .feature-grid,
  .steps,
  .activation-steps,
  .split-section,
  .buy-section {
    grid-template-columns: 1fr;
  }

  .metrics div {
    min-height: 92px;
  }

  .section,
  .split-section {
    padding: 64px 0;
  }

  .split-section {
    gap: 24px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  .brand span:last-child {
    max-width: 170px;
  }

  .hero-actions,
  .activation-actions,
  .button {
    width: 100%;
  }

  .site-footer {
    padding: 26px 20px;
  }

  .activation-panel {
    padding: 24px;
  }
}