:root {
  --bg: #08090b;
  --panel: #151619;
  --panel-strong: #202226;
  --text: #f7f7f8;
  --muted: #b7bac2;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #ef3340;
  --accent-dark: #b91f2c;
  --green: #19b967;
  --white: #ffffff;
  --page-x: 24px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a {
  color: inherit;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 22px var(--page-x);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 18px;
  font-weight: 800;
  text-decoration: none;
}

.brand-mark {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: cover;
}

.nav-links {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-size: 15px;
}

.nav-links a {
  text-decoration: none;
}

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

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 390px);
  align-items: start;
  gap: 54px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 34px var(--page-x) 72px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
}

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

.hero h1 {
  max-width: 760px;
  margin-bottom: 22px;
  font-size: 72px;
  line-height: 1;
  letter-spacing: 0;
}

.hero-text {
  max-width: 650px;
  color: var(--muted);
  font-size: 20px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: var(--white);
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--text);
}

.phone-preview {
  width: 100%;
  max-width: 390px;
  justify-self: end;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 34px;
  background: #0d0e10;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.phone-preview img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 25px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 20px var(--page-x) 72px;
}

.feature-grid article {
  min-height: 190px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.feature-grid h2,
.info-band h2,
.document h2 {
  margin-bottom: 10px;
  font-size: 22px;
}

.feature-grid p,
.info-band p,
.content-section p,
.detail-grid p,
.faq-section p,
.document p,
.document li {
  color: var(--muted);
  line-height: 1.7;
}

.content-section,
.detail-grid,
.faq-section {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 var(--page-x) 72px;
}

.section-copy {
  max-width: 860px;
}

.section-copy h2,
.faq-section h2 {
  margin-bottom: 18px;
  font-size: 42px;
  line-height: 1.08;
}

.section-copy p {
  max-width: 820px;
  font-size: 18px;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.detail-grid article,
.faq-list article {
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list h3 {
  margin: 0 0 8px;
  font-size: 19px;
}

.faq-list p {
  margin-bottom: 0;
}

.faq-list a {
  color: var(--accent);
  font-weight: 800;
}

.info-band {
  max-width: 1160px;
  margin: 0 auto 64px;
  padding: 0 var(--page-x);
}

.info-band div {
  padding: 34px;
  border-radius: 8px;
  background: var(--panel-strong);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  max-width: 1160px;
  margin: 0 auto;
  padding: 26px var(--page-x) 34px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.document {
  max-width: 820px;
  min-height: calc(100vh - 170px);
  margin: 0 auto;
  padding: 64px var(--page-x) 90px;
}

.document h1 {
  margin-bottom: 10px;
  font-size: 64px;
  line-height: 1;
  letter-spacing: 0;
}

.updated {
  margin-bottom: 40px;
}

.contact-card {
  margin: 30px 0;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.contact-card a {
  color: var(--accent);
  font-weight: 800;
}

@media (min-width: 1280px) {
  :root {
    --page-x: 32px;
  }

  .hero {
    gap: 72px;
  }
}

@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    gap: 42px;
    padding-top: 36px;
  }

  .hero h1 {
    max-width: 780px;
    font-size: 58px;
  }

  .hero-text {
    max-width: 720px;
    font-size: 19px;
  }

  .phone-preview {
    justify-self: start;
    max-width: 360px;
  }

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

  .section-copy h2,
  .faq-section h2 {
    font-size: 36px;
  }

  .document h1 {
    font-size: 56px;
  }
}

@media (max-width: 640px) {
  :root {
    --page-x: 18px;
  }

  .site-header,
  .site-footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .site-header {
    padding-top: 18px;
    padding-bottom: 18px;
  }

  .nav-links {
    flex-wrap: wrap;
    gap: 14px;
    font-size: 14px;
  }

  .hero {
    gap: 32px;
    padding-top: 26px;
    padding-bottom: 52px;
  }

  .hero h1 {
    margin-bottom: 18px;
    font-size: 40px;
    line-height: 1.05;
  }

  .hero-text {
    font-size: 17px;
    line-height: 1.55;
  }

  .hero-actions {
    flex-direction: column;
    margin-top: 26px;
  }

  .button {
    width: 100%;
  }

  .phone-preview {
    justify-self: center;
    max-width: 330px;
    padding: 8px;
    border-radius: 24px;
  }

  .phone-preview img {
    border-radius: 18px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    padding-bottom: 52px;
  }

  .content-section,
  .detail-grid,
  .faq-section {
    padding-bottom: 52px;
  }

  .feature-grid article {
    min-height: 0;
    padding: 20px;
  }

  .detail-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .detail-grid article,
  .faq-list article {
    padding: 20px;
  }

  .section-copy h2,
  .faq-section h2 {
    font-size: 30px;
  }

  .section-copy p {
    font-size: 16px;
  }

  .info-band {
    margin-bottom: 48px;
  }

  .info-band div {
    padding: 24px;
  }

  .document {
    padding-top: 42px;
    padding-bottom: 70px;
  }

  .document h1 {
    font-size: 42px;
  }
}

@media (max-width: 380px) {
  :root {
    --page-x: 14px;
  }

  .brand {
    font-size: 17px;
  }

  .brand-mark {
    width: 34px;
    height: 34px;
  }

  .hero h1 {
    font-size: 34px;
  }

  .hero-text {
    font-size: 16px;
  }

  .phone-preview {
    max-width: 300px;
  }

  .document h1 {
    font-size: 36px;
  }
}