:root {
  --bg: #0a0a0a;
  --bg-alt: #0e1210;
  --fg: #f2f3f2;
  --fg-muted: #9aa39e;
  --accent: #66ceb7;
  --accent-bright: #8adfcb;
  --border: rgba(242, 243, 242, 0.1);
  --radius: 10px;
  --wrap: 1080px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  * {
    animation: none !important;
    transition: none !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--wrap);
  margin: 0 auto;
  padding-inline: 24px;
}

a {
  color: inherit;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(10, 10, 10, 0.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--fg);
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.brand-mark {
  color: var(--accent);
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  gap: 28px;
  font-size: 0.92rem;
}

.site-nav a {
  text-decoration: none;
  color: var(--fg-muted);
  transition: color 0.15s ease;
}

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

@media (max-width: 640px) {
  .site-nav {
    display: none;
  }
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.btn-primary {
  background: var(--accent);
  color: #05130f;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--accent-bright);
}

.btn-small {
  padding: 9px 16px;
  font-size: 0.88rem;
}

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

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  padding-block: 120px 96px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  color: var(--border);
  z-index: 0;
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.eyebrow {
  font-family: "JetBrains Mono", ui-monospace, monospace;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  margin: 0 0 20px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.12;
  margin: 0 0 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.lede {
  color: var(--fg-muted);
  font-size: 1.1rem;
  max-width: 56ch;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 14px;
}

/* Sections */

.section {
  padding-block: 88px;
  border-top: 1px solid var(--border);
}

.section-alt {
  background: var(--bg-alt);
}

.section h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 10px;
  letter-spacing: -0.01em;
}

.section-lede {
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin: 0 0 44px;
  max-width: 60ch;
}

/* Product cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

@media (max-width: 860px) {
  .card-grid {
    grid-template-columns: 1fr;
  }
}

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 24px;
  background: rgba(255, 255, 255, 0.015);
}

.card-tag {
  display: inline-block;
  font-family: "JetBrains Mono", ui-monospace, monospace;
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid rgba(102, 206, 183, 0.35);
  border-radius: 999px;
  padding: 3px 10px;
  margin-bottom: 14px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.card p {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.96rem;
}

/* Security section */

.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 780px) {
  .security-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

.check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--fg-muted);
  font-size: 1rem;
}

.check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 4px;
  background: rgba(102, 206, 183, 0.14);
  border: 1px solid rgba(102, 206, 183, 0.5);
}

.check-list li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 9px;
  width: 6px;
  height: 3px;
  border-left: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: rotate(-45deg);
}

/* Access / waitlist */

.access-inner {
  max-width: 560px;
}

.access-form {
  display: flex;
  gap: 12px;
  margin-top: 8px;
}

.access-form input[type="email"] {
  flex: 1;
  min-width: 0;
  padding: 12px 16px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  color: var(--fg);
  font-size: 0.98rem;
  font-family: inherit;
}

.access-form input[type="email"]::placeholder {
  color: var(--fg-muted);
}

.access-form input[type="email"]:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 1px;
}

@media (max-width: 520px) {
  .access-form {
    flex-direction: column;
  }
}

.access-note {
  min-height: 1.2em;
  margin: 14px 0 0;
  font-size: 0.9rem;
  color: var(--accent);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding-block: 32px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--fg-muted);
  font-size: 0.88rem;
}

.brand-small {
  font-size: 0.92rem;
}

.footer-inner a {
  text-decoration: none;
  color: var(--fg-muted);
}

.footer-inner a:hover,
.footer-inner a:focus-visible {
  color: var(--fg);
}

/* Reveal-on-scroll */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}