:root {
  --bg: #fafaf6;
  --fg: #1c1b18;
  --fg-soft: #5d5a52;
  --fg-muted: #8a8578;
  --rule: #e8e3d6;
  --accent: #4a6647;
  --accent-soft: rgba(74, 102, 71, 0.08);
  --accent-line: rgba(74, 102, 71, 0.22);

  --shadow-1: 0 1px 2px rgba(28, 24, 18, 0.05);
  --shadow-2:
    0 1px 2px rgba(28, 24, 18, 0.05),
    0 18px 40px -16px rgba(28, 24, 18, 0.18);

  --font-display: "Fraunces", "Times New Roman", Georgia, serif;
  --font-body: "Geist", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --container: 1080px;
  --pad-x: clamp(1.25rem, 4vw, 3rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  color: var(--fg);
  background-color: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Subtle atmospheric tint at the top of the page. Restrained, just enough
   to break the flatness of pure off-white. */
body::before {
  content: "";
  position: fixed;
  inset: 0 0 auto 0;
  height: 70vh;
  background:
    radial-gradient(
      ellipse 90% 70% at 12% -10%,
      rgba(74, 102, 71, 0.06),
      transparent 60%
    ),
    radial-gradient(
      ellipse 50% 40% at 95% 0%,
      rgba(74, 102, 71, 0.04),
      transparent 70%
    );
  pointer-events: none;
  z-index: -1;
}

a {
  color: inherit;
}

/* ───── Top nav ───── */

.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--container);
  margin: 0 auto;
  padding: 1.75rem var(--pad-x);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.0625rem;
  letter-spacing: -0.01em;
  font-variation-settings: "opsz" 14, "SOFT" 50;
}

.mark {
  width: 0.5625rem;
  height: 0.5625rem;
  background: var(--accent);
  transform: rotate(45deg);
  box-shadow: 0 0 0 3px var(--accent-soft);
  border-radius: 1px;
}

.nav-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--fg-soft);
  transition: color 0.2s ease;
  white-space: nowrap;
}

.nav-link .arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

.nav-link:hover {
  color: var(--fg);
}

.nav-link:hover .arrow {
  transform: translate(2px, -2px);
}

/* ───── Main column ───── */

main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad-x);
}

/* ───── Hero ───── */

.hero {
  padding: clamp(3.5rem, 9vw, 7rem) 0 clamp(4.5rem, 10vw, 8rem);
}

.hero-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-muted);
  margin-bottom: clamp(1.75rem, 3vw, 2.5rem);
  opacity: 0;
  animation: fade-up 700ms ease 100ms forwards;
}

.meta-dot {
  width: 0.375rem;
  height: 0.375rem;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2.4s ease-in-out infinite;
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(3.75rem, 12vw, 8.5rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  margin: 0 0 1.5rem;
  font-variation-settings: "opsz" 144, "SOFT" 30;
  opacity: 0;
  animation: fade-up 800ms ease 220ms forwards;
}

.hero-tagline {
  font-size: clamp(1.0625rem, 1.4vw, 1.25rem);
  line-height: 1.45;
  margin: 0 0 clamp(2.25rem, 4vw, 2.75rem);
  max-width: 36ch;
  color: var(--fg);
  opacity: 0;
  animation: fade-up 800ms ease 360ms forwards;
}

.hero-tagline-soft {
  color: var(--fg-soft);
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  opacity: 0;
  animation: fade-up 800ms ease 480ms forwards;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  background: var(--fg);
  color: var(--bg);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: 0.005em;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: var(--shadow-2);
  transition:
    transform 0.2s cubic-bezier(0.2, 0, 0.2, 1),
    background-color 0.25s ease,
    border-color 0.25s ease,
    color 0.25s ease;
}

.hero-cta:hover,
.hero-cta:focus-visible {
  background: var(--accent);
  transform: translateY(-1px);
  outline: none;
}

.hero-cta-secondary {
  background: transparent;
  color: var(--fg);
  box-shadow: none;
  border: 1px solid var(--accent-line);
}

.hero-cta-secondary:hover,
.hero-cta-secondary:focus-visible {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--fg);
}

.hero-cta-arrow {
  display: inline-block;
  transition: transform 0.25s cubic-bezier(0.5, 0, 0.2, 1);
}

.hero-cta:hover .hero-cta-arrow,
.hero-cta:focus-visible .hero-cta-arrow {
  transform: translateX(4px);
}

/* ───── Section labels ───── */

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.875rem;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.section-label-bar {
  width: 1.75rem;
  height: 1px;
  background: var(--accent);
}

/* ───── Capabilities ───── */

.features,
.stack,
.platforms {
  padding: clamp(2.75rem, 5vw, 4.25rem) 0;
  border-top: 1px solid var(--rule);
}

/* ───── Platforms ───── */

.platform-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.platform-card {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
  padding: clamp(1.5rem, 2.5vw, 2rem);
  background: var(--bg);
  border: 1px solid var(--rule);
  border-radius: 14px;
  box-shadow: var(--shadow-1);
  transition:
    transform 0.2s ease,
    border-color 0.25s ease,
    box-shadow 0.25s ease;
}

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

.platform-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.platform-title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.375rem, 2.2vw, 1.625rem);
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--fg);
  font-variation-settings: "opsz" 96, "SOFT" 50;
}

.platform-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  border-radius: 999px;
  color: var(--fg-soft);
}

.platform-tag-new {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg);
}

.platform-text {
  font-size: 0.9375rem;
  color: var(--fg-soft);
  line-height: 1.55;
  margin: 0;
  flex-grow: 1;
}

.platform-link {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
  text-decoration: none;
  color: var(--fg-soft);
  transition: color 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.platform-link .arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

.platform-link:hover {
  color: var(--fg);
}

.platform-link:hover .arrow {
  transform: translate(2px, -2px);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: clamp(2rem, 5vw, 4rem);
  row-gap: clamp(2.5rem, 4vw, 3.25rem);
}

.feature {
  display: grid;
  grid-template-columns: auto 1fr;
  column-gap: 1.25rem;
  align-items: baseline;
}

.feature-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.04em;
  padding-top: 0.625rem;
}

.feature-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-style: italic;
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  letter-spacing: -0.015em;
  margin: 0 0 0.5rem;
  color: var(--fg);
  font-variation-settings: "opsz" 96, "SOFT" 80;
}

.feature-text {
  font-size: 1rem;
  color: var(--fg-soft);
  line-height: 1.55;
  margin: 0;
  max-width: 42ch;
}

/* ───── Built-with strip ───── */

.stack-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 0.625rem;
}

.stack-chip {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  padding: 0.5rem 0.9rem;
  background: var(--accent-soft);
  border: 1px solid var(--accent-line);
  color: var(--fg);
  border-radius: 999px;
  letter-spacing: 0.01em;
}

/* ───── Footer ───── */

footer {
  max-width: var(--container);
  margin: 0 auto;
  padding: clamp(2.5rem, 4vw, 3.5rem) var(--pad-x)
    clamp(2rem, 3vw, 2.5rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
}

.footer-links {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  flex-wrap: wrap;
}

.footer-sep {
  color: var(--fg-muted);
}

.footer-link {
  color: var(--fg-soft);
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--fg);
  outline: none;
}

/* ───── Mobile ───── */

@media (max-width: 720px) {
  .topnav {
    padding-top: 1.25rem;
    padding-bottom: 1.25rem;
  }

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

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

  .hero-tagline {
    max-width: none;
  }
}

@media (max-width: 420px) {
  .nav-link .arrow {
    display: none;
  }
}

/* ───── Motion ───── */

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.45;
    transform: scale(0.78);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-delay: 0ms !important;
    transition-duration: 0.001ms !important;
  }

  .hero-meta,
  .hero-title,
  .hero-tagline,
  .hero-ctas {
    opacity: 1;
    transform: none;
  }
}