:root {
  color-scheme: light;
  --bg: #f7f4ec;
  --surface: #ffffff;
  --ink: #191713;
  --muted: #686155;
  --line: #ded5c4;
  --gold: #947000;
  --green: #1f7a4d;
  --deep: #262017;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--gold);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(247, 244, 236, 0.92);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand img {
  width: 132px;
  height: auto;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 10px 16px;
  border-radius: 8px;
  border: 1px solid var(--gold);
  background: var(--gold);
  color: #fff;
  font-weight: 700;
}

.button.secondary {
  background: transparent;
  color: var(--gold);
}

.hero {
  max-width: 1080px;
  margin: 0 auto;
  padding: 76px 20px 44px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: 44px;
  align-items: center;
}

.eyebrow {
  color: var(--gold);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  line-height: 1.15;
  margin: 0;
}

h1 {
  margin-top: 14px;
  font-size: clamp(40px, 7vw, 78px);
}

h2 {
  font-size: clamp(28px, 4vw, 42px);
}

h3 {
  font-size: 20px;
}

.lead {
  max-width: 680px;
  margin: 20px 0 0;
  color: var(--muted);
  font-size: 18px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.hero-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 24px;
  box-shadow: 0 18px 60px rgba(38, 32, 23, 0.08);
}

.app-icon {
  width: 88px;
  height: 88px;
  border-radius: 22px;
  display: block;
  margin-bottom: 18px;
}

.cipher-box {
  margin-top: 16px;
  padding: 16px;
  border-radius: 8px;
  border: 1px solid var(--line);
  background: #fbfaf5;
  color: var(--deep);
  font-family: "Courier New", monospace;
  font-size: 14px;
  overflow-wrap: anywhere;
}

.section {
  border-top: 1px solid var(--line);
  padding: 56px 20px;
}

.section-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 28px;
}

.feature {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 22px;
}

.feature p,
.policy p,
.policy li {
  color: var(--muted);
}

.feature-mark {
  color: var(--green);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.policy {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 20px;
}

.policy h1 {
  font-size: clamp(34px, 5vw, 56px);
}

.policy h2 {
  margin-top: 34px;
  font-size: 26px;
}

.notice {
  border-left: 4px solid var(--gold);
  background: var(--surface);
  padding: 16px 18px;
  margin: 24px 0;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 28px 20px;
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 10px;
    font-size: 13px;
  }

  .hero {
    grid-template-columns: 1fr;
    padding-top: 44px;
  }

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