/* -----------------------------
   Variables for Light/Dark Mode
-------------------------------*/
:root {
  --bg: #ffffff;
  --text: #000000;
  --muted: #666666;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e0e0e;
    --text: #f2f2f2;
    --muted: #888888;
  }
}

/* -----------------------------
   Global Reset & Body
-------------------------------*/
* {
  box-sizing: border-box;
  font-size: 16px;
}

body {
  margin: 0;
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 1em;
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

/* -----------------------------
   Container & Sections
-------------------------------*/
.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 4em 1.5em;
}

section {
  margin-top: 4em;
}

/* -----------------------------
   Fixed Marker
-------------------------------*/
.marker {
  position: fixed;
  top: 1.5em;
  left: 1.5em;
  font-weight: 700;
}

/* -----------------------------
   Hero
-------------------------------*/
.hero {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-weight: 700;
  font-size: 4em;
  line-height: 1.1;
  margin: 0 0 1em 0;
}

.lead {
  font-weight: 500;
  font-size: 1.75em;
  margin: 0;
  line-height: 1.25;
}

.subline {
  font-weight: 400;
  font-size: 1.75em;
  margin-top: 0.5em;
  line-height: 1.25;
  color: var(--muted);
}

.hero img {
  width: 100%;
  height: auto;
  filter: grayscale(100%);
}

/* -----------------------------
   Positioning Section
-------------------------------*/


h2, h3 {
  font-weight: 700;
  margin-bottom: 1em;
  line-height: 1.2;
  font-size: 2em;
}




/* -----------------------------
   Contact Section
-------------------------------*/
.contact p {
  margin-bottom: 1em;
}

/* -----------------------------
   Responsive
-------------------------------*/
@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
  }

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