:root {
  --bg: #0a0a0b;
  --bg-elev-1: #121215;
  --bg-elev-2: #17171c;
  --line: #25252c;
  --line-strong: #34343d;
  --text: #f4f4f6;
  --muted: #9a9aa3;
  --accent: #ccff00;
  --accent-soft: rgba(204, 255, 0, 0.12);
  --accent-line: rgba(204, 255, 0, 0.32);
  --info: #4ed3e8;
  --shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --container: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(204, 255, 0, 0.06), transparent 60%),
    radial-gradient(900px 500px at 0% 10%, rgba(78, 211, 232, 0.05), transparent 65%),
    var(--bg);
  min-height: 100vh;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 160ms ease, opacity 160ms ease;
}

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

.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(10, 10, 11, 0.72);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 900;
  letter-spacing: 2px;
}

.brand-icon {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid var(--line);
}

.brand-name {
  font-size: 16px;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--accent);
}

.site-nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
}

.site-nav a {
  letter-spacing: 0.5px;
}

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

/* Eyebrow + headings */
.eyebrow {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(40px, 6vw, 72px);
  line-height: 1.04;
  font-weight: 900;
}

.accent {
  color: var(--accent);
}

h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  margin-bottom: 24px;
}

h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
}

/* Hero */
.hero {
  padding: 80px 0 96px;
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  max-width: 920px;
}

.hero-sub {
  font-size: 18px;
  color: var(--muted);
  max-width: 640px;
  margin: 24px 0 32px;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 22px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 14px;
  letter-spacing: 1px;
  text-transform: uppercase;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 160ms ease, background 160ms ease, color 160ms ease,
    border-color 160ms ease;
}

.btn-primary {
  background: var(--accent);
  color: #0a0a0b;
}

.btn-primary:hover {
  transform: translateY(-1px);
  color: #0a0a0b;
}

.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--accent-line);
  color: var(--accent);
}

.hero-meta {
  font-size: 13px;
  color: var(--muted);
  letter-spacing: 0.5px;
  margin: 0;
}

/* Sections */
.section {
  padding: 96px 0;
  border-bottom: 1px solid var(--line);
}

.section-alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.015), transparent);
}

.section-lede {
  color: var(--muted);
  max-width: 640px;
  font-size: 17px;
  margin: 0 0 40px;
}

/* How it works */
.how-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.how-card {
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 24px;
  transition: border-color 200ms ease, transform 200ms ease;
}

.how-card:hover {
  border-color: var(--accent-line);
  transform: translateY(-2px);
}

.how-step {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 12px;
}

.how-card p {
  color: var(--muted);
  margin: 0;
  font-size: 15px;
}

@media (max-width: 980px) {
  .how-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 540px) {
  .how-grid {
    grid-template-columns: 1fr;
  }
}

/* Features */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.feature {
  background: var(--bg-elev-1);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.feature::before {
  content: "";
  position: absolute;
  inset: auto auto 0 0;
  width: 4px;
  height: 36px;
  background: var(--accent);
  border-top-right-radius: 4px;
}

.feature p {
  color: var(--muted);
  margin: 0;
  font-size: 15px;
}

@media (max-width: 980px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* Screenshots */
.screens-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
  align-items: end;
}

.screen {
  margin: 0;
  text-align: center;
}

.screen-frame {
  background: linear-gradient(180deg, #1c1c22, #101015);
  border: 1px solid var(--line-strong);
  border-radius: 32px;
  padding: 8px;
  box-shadow: var(--shadow);
  transition: transform 240ms ease;
}

.screen:hover .screen-frame {
  transform: translateY(-4px);
}

.screen-frame img {
  border-radius: 24px;
  width: 100%;
  height: auto;
  background: #0a0a0b;
}

.screen figcaption {
  margin-top: 14px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.5px;
}

@media (max-width: 1080px) {
  .screens-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 720px) {
  .screens-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 460px) {
  .screens-grid {
    grid-template-columns: 1fr;
  }
}

/* CTA section */
.section-cta {
  text-align: center;
}

.cta-inner {
  max-width: 720px;
}

.section-cta p {
  color: var(--muted);
  font-size: 18px;
  margin: 0 0 28px;
}

/* Footer */
.site-footer {
  background: var(--bg-elev-1);
  padding: 56px 0 24px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand .brand-name {
  margin: 0;
  font-size: 16px;
}

.footer-tag {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 13px;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.footer-heading {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

.footer-links a {
  display: block;
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 8px;
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.5px;
}

.footer-bottom p {
  margin: 0;
}

@media (max-width: 720px) {
  .footer-inner {
    grid-template-columns: 1fr;
  }
}