:root {
  --tape: #0d0f0d;
  --tape-deep: #070807;
  --surface: #1b1e1a;
  --stamp: #4ec9a8;
  --stamp-dim: rgba(78, 201, 168, 0.18);
  --time: #d4a06a;
  --ink: #ffffff;
  --ink-secondary: rgba(255, 255, 255, 0.78);
  --ink-tertiary: rgba(255, 255, 255, 0.62);
  --hairline: #5c635c;
  --radius: 10px;
  --pad: clamp(1.25rem, 4vw, 2rem);
  --max: 1080px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(78, 201, 168, 0.12), transparent 55%),
    radial-gradient(900px 500px at -10% 30%, rgba(212, 160, 106, 0.08), transparent 50%),
    linear-gradient(180deg, #101310 0%, var(--tape) 40%, var(--tape-deep) 100%);
  font-family: var(--font-display);
  line-height: 1.55;
}

.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  z-index: 50;
  opacity: 0.045;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0,
    transparent 2px,
    rgba(0, 0, 0, 0.55) 3px
  );
}

a {
  color: var(--stamp);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--time);
}

img {
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem var(--pad);
  background: rgba(13, 15, 13, 0.88);
  border-bottom: 1px solid rgba(92, 99, 92, 0.45);
  backdrop-filter: blur(12px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--ink);
  text-decoration: none;
}

.brand-seal {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #0a120f;
  background: var(--stamp);
  padding: 0.28rem 0.45rem;
  border-radius: 4px;
  box-shadow: 0 0 18px rgba(78, 201, 168, 0.35);
}

.brand-name {
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.site-nav a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 0.95rem;
}

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

.nav-cta {
  color: #0a120f !important;
  background: var(--stamp);
  padding: 0.45rem 0.8rem;
  border-radius: 8px;
  font-weight: 600;
  box-shadow: 0 0 20px rgba(78, 201, 168, 0.25);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--hairline);
  border-radius: 8px;
  background: var(--surface);
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
}

.eyebrow,
.mono-label,
.feat-code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--stamp);
  margin: 0 0 0.75rem;
}

h1,
h2,
h3 {
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.2rem, 6vw, 3.6rem);
  margin: 0 0 0.75rem;
}

h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.35rem);
  margin: 0 0 1rem;
  max-width: 18ch;
}

h3 {
  font-size: 1.15rem;
  margin: 0.35rem 0 0.55rem;
}

.accent {
  color: var(--stamp);
  text-shadow: 0 0 24px rgba(78, 201, 168, 0.35);
}

.hero,
.features,
.about,
.privacy,
.contact {
  width: min(100% - 2 * var(--pad), var(--max));
  margin: 0 auto;
  padding: clamp(3rem, 8vw, 5.5rem) 0;
}

.hero {
  padding-top: clamp(3.5rem, 10vw, 6rem);
}

.hero-sub {
  font-family: var(--font-mono);
  color: var(--time);
  font-size: 1rem;
  margin: 0 0 1.25rem;
}

.hero-lead,
.section-lead {
  max-width: 54ch;
  color: var(--ink-secondary);
  font-size: 1.05rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.75rem 0 2rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 1.2rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  color: #0a120f;
  background: var(--stamp);
  box-shadow: 0 0 28px rgba(78, 201, 168, 0.3);
}

.btn-ghost {
  color: var(--ink);
  background: transparent;
  border-color: var(--hairline);
}

.hero-stats {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 0;
  margin: 0;
}

.hero-stats li {
  background: var(--surface);
  border: 1px solid rgba(92, 99, 92, 0.55);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
  color: var(--ink-secondary);
  font-size: 0.92rem;
}

.hero-stats strong {
  display: block;
  color: var(--time);
  font-family: var(--font-mono);
  font-size: 1.2rem;
  margin-bottom: 0.2rem;
}

.feature-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.feature-card,
.contact-card,
.about-note {
  background: linear-gradient(160deg, rgba(27, 30, 26, 0.95), rgba(16, 18, 16, 0.92));
  border: 1px solid rgba(92, 99, 92, 0.55);
  border-radius: var(--radius);
  padding: 1.2rem 1.25rem;
  box-shadow: inset 0 1px 0 rgba(78, 201, 168, 0.08);
}

.feature-card p,
.about-note p:last-child {
  margin: 0;
  color: var(--ink-secondary);
  font-size: 0.98rem;
}

.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.about-grid > div p {
  color: var(--ink-secondary);
}

.meta-line {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--time);
}

.privacy-intro {
  color: var(--ink-secondary);
  max-width: 70ch;
}

.privacy-intro code {
  font-family: var(--font-mono);
  font-size: 0.85em;
  color: var(--stamp);
}

.policy-block {
  margin-top: 1.5rem;
  padding: 1.2rem 1.25rem;
  background: var(--surface);
  border: 1px solid rgba(92, 99, 92, 0.5);
  border-radius: var(--radius);
}

.policy-block h3 {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--stamp);
  letter-spacing: 0.04em;
}

.policy-block p,
.policy-block li {
  color: var(--ink-secondary);
}

.policy-block ul {
  padding-left: 1.2rem;
}

.reply-note {
  font-family: var(--font-mono);
  color: var(--time);
  font-size: 0.85rem;
}

.contact-card {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

a.contact-card:hover {
  border-color: rgba(78, 201, 168, 0.55);
  box-shadow: 0 0 24px rgba(78, 201, 168, 0.12);
  color: inherit;
}

.contact-card strong {
  display: block;
  margin-top: 0.35rem;
  word-break: break-word;
}

.site-footer {
  border-top: 1px solid rgba(92, 99, 92, 0.45);
  padding: 1.5rem var(--pad) 2.5rem;
  text-align: center;
  color: var(--ink-tertiary);
  font-size: 0.9rem;
}

.site-footer a {
  color: var(--ink-secondary);
}

@media (max-width: 900px) {
  .feature-grid,
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }

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

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 1px);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem var(--pad) 1rem;
    background: rgba(13, 15, 13, 0.96);
    border-bottom: 1px solid rgba(92, 99, 92, 0.45);
  }

  .site-nav.open {
    display: flex;
  }

  .site-nav a {
    padding: 0.75rem 0;
    border-bottom: 1px solid rgba(92, 99, 92, 0.35);
  }

  .nav-cta {
    text-align: center;
    margin-top: 0.5rem;
  }

  .hero-stats,
  .feature-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  h2 {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .btn:hover {
    transform: none;
  }
}