@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600;700;800&display=swap');

:root {
  color-scheme: dark;
  --ink: #f3f2ee;
  --muted: #c4cfd0;
  --primary: #76abae;
  --accent: #ff5722;
  --night: #303841;
  --panel: #3a4750;
  --line: #46545e;
  --measure: 72rem;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--night);
  font: 1rem/1.7 "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--primary); text-underline-offset: .22em; }
a:hover { color: #a8d0d2; }
a:focus-visible, button:focus-visible { outline: .2rem solid #fff; outline-offset: .25rem; }

.skip-link {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 10;
  padding: .6rem .9rem;
  color: var(--night);
  background: #fff;
  transform: translateY(-200%);
}
.skip-link:focus { transform: none; }

.site-header {
  position: relative;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.nav {
  width: min(calc(100% - 2rem), var(--measure));
  min-height: 5rem;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--ink);
  font-weight: 750;
  letter-spacing: -.02em;
  text-decoration: none;
}
.nav-links { display: flex; flex-wrap: wrap; gap: .35rem 1.2rem; }
.nav-links a { color: var(--muted); text-decoration: none; }
.nav-links a[aria-current="page"], .nav-links a:hover { color: var(--ink); }

main { min-height: calc(100vh - 12rem); }

.hero, .page-head, .content, .feature-grid, .site-footer > div {
  width: min(calc(100% - 2rem), var(--measure));
  margin-inline: auto;
}

.hero {
  min-height: 34rem;
  padding: 7rem 0 5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(17rem, .8fr);
  align-items: center;
  gap: 4rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--primary);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .18em;
  text-transform: uppercase;
}

h1, h2, h3 {
  font-family: "Montserrat", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-weight: 500;
  line-height: 1.08;
  text-wrap: balance;
}
h1 { max-width: 12ch; margin: 0; font-size: clamp(3rem, 8vw, 6.8rem); letter-spacing: -.055em; }
h2 { margin: 3.5rem 0 1rem; font-size: clamp(2rem, 4vw, 3.2rem); letter-spacing: -.035em; }
h3 { margin: 0 0 .6rem; font-size: 1.45rem; }

.lede { max-width: 40rem; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.18rem; }

.hero-mark {
  position: relative;
  min-height: 24rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  background: var(--ink);
  box-shadow: 1.4rem 1.4rem 0 var(--accent);
}
.hero-mark::before { content: "READ ONLY"; position: absolute; top: 1rem; right: 1rem; color: var(--night); font: 700 .65rem/1 "Montserrat", system-ui, sans-serif; letter-spacing: .18em; }
.hero-mark img { width: min(88%, 26rem); }

.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button {
  display: inline-block;
  padding: .8rem 1.1rem;
  border: 1px solid var(--primary);
  color: var(--night);
  background: var(--primary);
  font-weight: 750;
  text-decoration: none;
}
.button.secondary { color: var(--ink); background: transparent; border-color: var(--line); }

.feature-grid {
  padding: 1rem 0 6rem;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.feature {
  min-height: 15rem;
  padding: 2rem;
  background: var(--panel);
}
.feature p { color: var(--muted); }
.number { color: var(--accent); font: 800 .75rem/1 "Montserrat", system-ui, sans-serif; letter-spacing: .12em; }

.page-head { padding: 6rem 0 3rem; border-bottom: 1px solid var(--line); }
.page-head h1 { max-width: 15ch; font-size: clamp(2.8rem, 7vw, 5.5rem); }
.page-head .lede { max-width: 52rem; }

.content {
  max-width: 52rem;
  padding: 1rem 0 6rem;
}
.content p, .content li { color: #d5d8e3; }
.content li + li { margin-top: .5rem; }
.content section { scroll-margin-top: 2rem; }
.content .note {
  margin: 2rem 0;
  padding: 1.2rem 1.35rem;
  border-left: .3rem solid var(--primary);
  background: var(--panel);
}
.meta { color: var(--muted); font-size: .9rem; }

.site-footer { padding: 2.5rem 0; border-top: 1px solid var(--line); background: var(--night); }
.site-footer > div { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.site-footer p { margin: 0; color: var(--muted); font-size: .9rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; }

@media (max-width: 760px) {
  .nav { padding: 1rem 0; align-items: flex-start; flex-direction: column; }
  .hero { padding-top: 4rem; grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-mark { min-height: 18rem; box-shadow: .7rem .7rem 0 var(--accent); }
  .feature-grid { grid-template-columns: 1fr; }
  .page-head { padding-top: 4rem; }
}

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