:root {
  color-scheme: dark;
  --bg: #030604;
  --bg-soft: #07110b;
  --panel: rgba(255, 255, 255, 0.045);
  --panel-strong: rgba(255, 255, 255, 0.075);
  --line: rgba(255, 255, 255, 0.15);
  --line-soft: rgba(255, 255, 255, 0.09);
  --text: #f5f8f5;
  --muted: #a7b2aa;
  --green: #49d65f;
  --green-strong: #35c14c;
  --green-dark: #12351d;
  --shadow: 0 28px 100px rgba(0, 0, 0, 0.48);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(110deg, rgba(73, 214, 95, 0.08), transparent 32%),
    linear-gradient(180deg, #030604 0%, #07150b 56%, #030604 100%),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image: linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 100% 92px;
  pointer-events: none;
}

a {
  color: inherit;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 76px;
  border-bottom: 1px solid var(--line-soft);
  padding: 14px clamp(18px, 5vw, 60px);
}

.brand,
.topbar nav,
.hero-actions,
.privacy-note,
.phone-bar,
.phone-head,
.final-cta {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-size: 1.28rem;
  font-weight: 820;
  letter-spacing: 0;
  text-decoration: none;
}

.brand-icon {
  position: relative;
  display: grid;
  gap: 4px;
  width: 34px;
  color: var(--green);
}

.brand-icon i {
  display: block;
  height: 3px;
  border-radius: 99px;
  background: currentColor;
}

.brand-icon i:nth-child(1),
.brand-icon i:nth-child(3) {
  width: 70%;
}

.brand-icon::before,
.brand-icon::after {
  content: "";
  position: absolute;
  inset: -8px auto -8px -8px;
  width: 9px;
  border: 2px solid currentColor;
  border-right: 0;
  border-radius: 8px 0 0 8px;
}

.brand-icon::after {
  right: -8px;
  left: auto;
  border-right: 2px solid currentColor;
  border-left: 0;
  border-radius: 0 8px 8px 0;
}

.topbar nav {
  gap: clamp(18px, 4vw, 48px);
}

.topbar nav a,
.nav-cta {
  color: var(--muted);
  font-weight: 650;
  text-decoration: none;
}

.topbar nav a:hover,
.topbar nav a:focus-visible {
  color: var(--text);
}

.nav-cta {
  display: none;
  min-height: 44px;
  border-radius: 8px;
  padding: 10px 18px;
  background: var(--green);
  color: #051006;
  font-weight: 820;
}

main {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  display: grid;
  gap: 34px;
  align-items: center;
  min-height: calc(100svh - 76px);
  padding: clamp(42px, 8vw, 86px) 0 42px;
}

.hero-copy {
  max-width: 620px;
}

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

h1 {
  margin-bottom: 20px;
  font-size: clamp(3.1rem, 14vw, 5.6rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.hero-copy h1 {
  max-width: 8.6ch;
}

.hero-copy h1 span {
  color: var(--green);
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(2rem, 7vw, 3.1rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  font-size: 1.12rem;
  line-height: 1.15;
  letter-spacing: 0;
}

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

.hero-copy p {
  max-width: 500px;
  margin-bottom: 18px;
  font-size: clamp(1.18rem, 4.5vw, 1.48rem);
  line-height: 1.32;
}

.hero-line {
  color: var(--green);
  font-weight: 760;
}

.hero-actions {
  flex-direction: column;
  align-items: stretch;
  gap: 12px;
  max-width: 360px;
  margin: 30px 0 24px;
}

.primary-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  min-height: 58px;
  border-radius: 8px;
  padding: 14px 22px;
  font-size: 1.05rem;
  font-weight: 820;
  text-decoration: none;
}

.primary-button {
  border: 1px solid rgba(106, 255, 126, 0.55);
  background: linear-gradient(135deg, var(--green), var(--green-strong));
  color: #041004;
  box-shadow: 0 22px 60px rgba(73, 214, 95, 0.2);
}

.secondary-button {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
}

.primary-button:hover,
.primary-button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible,
.nav-cta:hover,
.nav-cta:focus-visible {
  outline: 2px solid rgba(73, 214, 95, 0.55);
  outline-offset: 3px;
}

.privacy-note {
  align-items: flex-start;
  gap: 12px;
  max-width: 390px;
}

.privacy-note span {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 1px solid var(--green);
  border-radius: 999px;
  color: var(--green);
  font-weight: 900;
}

.privacy-note p {
  margin: 0;
  font-size: 0.98rem;
}

.phone-frame {
  width: min(100%, 390px);
  justify-self: center;
  border: 1px solid rgba(255, 255, 255, 0.19);
  border-radius: 30px;
  padding: 18px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.11), rgba(255, 255, 255, 0.025)),
    #060a07;
  box-shadow: var(--shadow), 0 0 70px rgba(73, 214, 95, 0.18);
}

.phone-bar,
.phone-head {
  justify-content: space-between;
}

.phone-bar {
  margin-bottom: 18px;
  color: var(--text);
  font-size: 0.86rem;
  font-weight: 760;
}

.signal {
  letter-spacing: 0.08em;
}

.phone-head {
  margin-bottom: 18px;
}

.phone-head strong {
  font-size: 1.35rem;
}

.shield {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 2px solid var(--green);
  border-radius: 11px;
  color: var(--green);
  font-weight: 900;
}

.phone-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.075), rgba(255, 255, 255, 0.025));
}

.phone-card span,
.phone-card small {
  display: block;
  color: var(--muted);
}

.phone-card strong {
  display: block;
  margin-top: 4px;
  font-size: 1.35rem;
}

.phone-card .positive,
.privacy-card strong {
  color: var(--green);
}

.period,
.phone-grid,
.bill-card {
  margin-bottom: 12px;
}

.phone-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.phone-card svg {
  width: 100%;
  margin-top: 8px;
}

.phone-card path {
  fill: none;
  stroke: var(--green);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.phone-grid .phone-card:nth-child(2) path {
  stroke: #d4ddd6;
}

.heat-map {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 5px;
  margin-top: 12px;
}

.heat-map i {
  aspect-ratio: 1;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.08);
}

.heat-map i:nth-child(3n) {
  background: rgba(73, 214, 95, 0.25);
}

.heat-map i:nth-child(7n),
.heat-map i:nth-child(11n),
.heat-map i:nth-child(17n) {
  background: rgba(73, 214, 95, 0.6);
}

.privacy-card {
  margin-top: 12px;
}

.feature-section,
.steps-section,
.faq-section {
  padding: clamp(42px, 8vw, 86px) 0;
}

.section-head {
  max-width: 720px;
  margin: 0 auto 24px;
  text-align: center;
}

.section-head p {
  font-size: 1.08rem;
}

.feature-grid {
  display: grid;
  gap: 14px;
}

.feature-grid article,
.faq-list details,
.final-cta {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.feature-grid article {
  min-height: 210px;
  padding: 24px;
}

.tile-icon {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 22px;
  border: 1px solid rgba(73, 214, 95, 0.42);
  border-radius: 8px;
  color: var(--green);
  font-size: 1.55rem;
}

.steps {
  display: grid;
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.steps li {
  position: relative;
  display: grid;
  justify-items: center;
  text-align: center;
}

.steps li > span {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: var(--green);
  color: #041004;
  font-weight: 900;
}

.steps h3 {
  margin-bottom: 6px;
}

.steps p {
  max-width: 260px;
}

.faq-list {
  display: grid;
  gap: 10px;
  max-width: 820px;
  margin: 0 auto;
}

.faq-list details {
  padding: 18px 20px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 820;
}

.faq-list p {
  margin: 12px 0 0;
}

.final-cta {
  justify-content: space-between;
  gap: 20px;
  margin: 28px 0 56px;
  padding: 22px;
}

.final-cta h2 {
  margin-bottom: 4px;
  font-size: clamp(1.55rem, 5vw, 2rem);
}

.final-cta p {
  margin-bottom: 0;
}

.final-cta .primary-button {
  min-width: min(100%, 300px);
}

@media (max-width: 720px) {
  .topbar nav {
    display: none;
  }

  .topbar {
    min-height: 68px;
  }

  .brand {
    font-size: 1.12rem;
  }

  .final-cta {
    align-items: stretch;
    flex-direction: column;
  }

  .final-cta .primary-button {
    min-width: 0;
    width: 100%;
  }
}

@media (min-width: 760px) {
  main {
    width: min(1180px, calc(100% - 72px));
  }

  .nav-cta {
    display: inline-flex;
    align-items: center;
  }

  .hero {
    grid-template-columns: minmax(0, 1fr) minmax(340px, 430px);
  }

  .hero-actions {
    flex-direction: row;
    max-width: 540px;
  }

  .primary-button,
  .secondary-button {
    min-width: 230px;
  }

  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .steps {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1040px) {
  .hero-copy h1 {
    max-width: 9ch;
  }
}