:root {
  --accent: #5df2a6;
  --heading: #f4fff7;
  --text: #dce8df;
  --muted: #97a69c;
  --line: rgba(255, 255, 255, 0.13);
  --panel: rgba(10, 13, 13, 0.82);
  --display: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", "SFMono-Regular", Consolas, monospace;
  --body: "Inter Tight", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background: #050606;
  font-family: var(--body);
  font-synthesis: none;
  letter-spacing: 0;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(135deg, rgba(93, 242, 166, 0.09), transparent 28rem),
    linear-gradient(180deg, #111616 0%, #070808 42%, #050606 100%);
}

a {
  color: inherit;
}

.site-shell {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 64px;
}

.top-nav {
  min-height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand-mark,
.nav-link,
.button-link,
.text-link {
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--heading);
  font-family: var(--display);
  font-size: 19px;
  font-weight: 850;
}

.brand-icon {
  width: 38px;
  height: 38px;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
  color: #04110a;
  background: var(--accent);
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 900;
}

.nav-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.nav-link,
.button-link {
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 800;
}

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

.button-link {
  color: #04110a;
  background: var(--accent);
}

.hero {
  margin-top: 34px;
  display: grid;
  gap: 22px;
  padding: 38px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background:
    linear-gradient(135deg, rgba(93, 242, 166, 0.12), transparent 60%),
    var(--panel);
}

.eyebrow,
.meta {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin: 0;
}

h1 {
  max-width: 12ch;
  color: var(--heading);
  font-family: var(--display);
  font-size: clamp(44px, 8vw, 86px);
  line-height: 0.95;
  font-weight: 900;
}

.hero p {
  max-width: 70ch;
  color: var(--text);
  font-size: 18px;
  line-height: 1.6;
}

.article-grid {
  margin-top: 22px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 280px;
  gap: 22px;
  align-items: start;
}

article,
aside,
.guide-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--panel);
}

article {
  padding: 34px;
}

article h2 {
  margin-top: 36px;
  color: var(--heading);
  font-family: var(--display);
  font-size: 32px;
  line-height: 1.05;
}

article h2:first-child {
  margin-top: 0;
}

article h3 {
  margin-top: 24px;
  color: var(--heading);
  font-size: 20px;
}

article p,
article li {
  color: var(--text);
  font-size: 16px;
  line-height: 1.7;
}

article p {
  margin-top: 14px;
}

article ul,
article ol {
  margin: 14px 0 0;
  padding-left: 22px;
}

article li + li {
  margin-top: 8px;
}

aside {
  position: sticky;
  top: 18px;
  padding: 22px;
  display: grid;
  gap: 14px;
}

aside a,
.text-link {
  color: var(--accent);
  font-weight: 850;
}

.guide-list {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.guide-card {
  padding: 24px;
  display: grid;
  gap: 12px;
  text-decoration: none;
}

.guide-card h2 {
  color: var(--heading);
  font-family: var(--display);
  font-size: 28px;
  line-height: 1.05;
}

.guide-card p {
  color: var(--muted);
  line-height: 1.6;
}

.faq {
  margin-top: 28px;
  display: grid;
  gap: 12px;
}

.faq details {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  background: rgba(255, 255, 255, 0.04);
}

.faq summary {
  cursor: pointer;
  color: var(--heading);
  font-weight: 850;
}

.footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 860px) {
  .top-nav,
  .nav-actions {
    align-items: flex-start;
  }

  .top-nav,
  .article-grid {
    grid-template-columns: 1fr;
  }

  .top-nav {
    display: grid;
  }

  .nav-actions {
    flex-wrap: wrap;
  }

  .hero,
  article {
    padding: 24px;
  }

  aside {
    position: static;
  }

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