:root {
  color-scheme: dark;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: #102019;
  color: #f2f3df;
  font-synthesis: none;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: 28px;
}
body {
  margin: 0;
  background: radial-gradient(ellipse at 80% 15%, #29443180, transparent 45%);
}
a {
  color: inherit;
  text-underline-offset: 4px;
}
button {
  font: inherit;
}
button,
a {
  -webkit-tap-highlight-color: transparent;
}
:focus-visible {
  outline: 3px solid #d6e6a2;
  outline-offset: 6px;
}
.wrap {
  width: min(1120px, calc(100% - 64px));
  margin-inline: auto;
}
.navigation {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 26px;
  gap: 24px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 19px;
  font-weight: 650;
  text-decoration: none;
}
nav {
  display: flex;
  gap: 28px;
  font-size: 14px;
  color: #b7c9af;
}
nav a {
  text-decoration: none;
}
.hero {
  padding-block: 100px 80px;
}
.eyebrow {
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 2px;
  color: #b7d99b;
}
h1 {
  margin: 24px 0;
  font-size: clamp(50px, 7.5vw, 88px);
  letter-spacing: -4px;
  line-height: 1.05;
  font-weight: 650;
}
h1 span {
  color: #b7d99b;
}
.intro {
  font-size: 22px;
  line-height: 1.6;
  color: #bdcdb4;
}
.button {
  display: inline-flex;
  gap: 28px;
  background: #c7dea7;
  color: #163021;
  padding: 16px 24px;
  border-radius: 9px;
  text-decoration: none;
  margin-top: 16px;
  font-weight: 650;
}
.highlights {
  color: #a8bca0;
  font-size: 12px;
  margin-top: 24px;
}
.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}
h2 {
  font-size: clamp(28px, 4vw, 38px);
  letter-spacing: -1px;
  margin: 16px 0;
  font-weight: 600;
}
.muted,
.principles p {
  color: #b7c9af;
  line-height: 1.8;
}
.theme-toggle {
  flex-shrink: 0;
  border: 1px solid #53694b;
  color: #dce6cc;
  background: transparent;
  padding: 12px 18px;
  border-radius: 9px;
  cursor: pointer;
}
.deck {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 18px;
  padding: 30px;
  margin-top: 32px;
  background: #0c1511;
  border: 1px solid #314433;
  border-radius: 24px;
  box-shadow: 0 24px 70px #0003;
}
.key {
  border: 0;
  padding: 0;
  border-radius: 16px;
  background: transparent;
  box-shadow: 0 7px 0 #060d09;
  cursor: pointer;
  transition: transform 0.15s ease;
}
.key:disabled {
  cursor: default;
}
.key:not(:disabled):hover {
  transform: translateY(-3px);
}
.key img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: inherit;
}
.caption,
figcaption {
  color: #a8bca0;
  font-size: 12px;
  line-height: 1.8;
}
.caption {
  text-align: center;
  margin-top: 24px;
}
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 44px;
  padding-block: 100px;
}
.number {
  font-size: 12px;
  color: #b7d99b;
}
h3 {
  font-size: 23px;
  font-weight: 600;
  margin: 18px 0;
}
.principles p {
  font-size: 15px;
}
.guide {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  padding-block: 64px;
  border-top: 1px solid #314433;
}
ol {
  padding-left: 24px;
  color: #d4dfc8;
  line-height: 1.8;
}
li {
  margin-bottom: 18px;
  padding-left: 8px;
}
.note {
  border-left: 2px solid #8fa974;
  padding-left: 20px;
  color: #b7c9af;
  font-size: 14px;
  line-height: 1.8;
  margin-top: 32px;
}
figure {
  margin: 0;
  text-align: center;
}
figure img {
  width: min(100%, 360px);
  height: auto;
  border: 1px solid #3d4b3c;
  border-radius: 16px;
}
figcaption {
  margin-top: 16px;
}
.closing {
  padding: 48px;
  margin-block: 56px 80px;
  background: #1c3024;
  border: 1px solid #344b35;
  border-radius: 20px;
}
.closing p {
  line-height: 1.8;
}
.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
  padding-block: 28px;
  border-top: 1px solid #314433;
  color: #a8bca0;
  font-size: 12px;
}
.skip {
  position: absolute;
  left: 20px;
  top: -80px;
  padding: 12px;
  background: #102019;
}
.skip:focus {
  top: 12px;
}
[hidden] {
  display: none !important;
}
@media (max-width: 760px) {
  .wrap {
    width: calc(100% - 36px);
  }
  .navigation {
    flex-wrap: wrap;
    gap: 18px;
  }
  nav {
    gap: 20px;
  }
  .hero {
    padding-block: 64px 48px;
  }
  h1 {
    letter-spacing: -2px;
  }
  .intro {
    font-size: 18px;
  }
  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 8px;
  }
  .deck {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    padding: 20px;
  }
  .principles {
    grid-template-columns: 1fr;
    gap: 24px;
    padding-block: 64px;
  }
  .guide {
    grid-template-columns: 1fr;
    gap: 40px;
    padding-block: 48px;
  }
  .closing {
    padding: 26px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .key {
    transition: none;
  }
}