:root {
  color-scheme: dark;
  --bg: #091011;
  --bg-soft: #0f1b1c;
  --panel: #142324;
  --panel-strong: #172b2c;
  --text: #edf7f3;
  --muted: #a9bbb5;
  --line: #294243;
  --green: #54d69d;
  --cyan: #68d7e7;
  --gold: #e7c16a;
  --shadow: rgba(0, 0, 0, 0.32);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(9, 16, 17, 0.72), var(--bg) 44rem),
    radial-gradient(circle at 22% 0%, rgba(84, 214, 157, 0.16), transparent 26rem),
    radial-gradient(circle at 92% 12%, rgba(104, 215, 231, 0.12), transparent 24rem),
    var(--bg);
  color: var(--text);
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  padding: 0.65rem 0.9rem;
  border-radius: 0.4rem;
  background: var(--text);
  color: var(--bg);
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 5;
  border-bottom: 1px solid rgba(104, 215, 231, 0.16);
  background: rgba(9, 16, 17, 0.88);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  width: min(1180px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 0.9rem 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  min-inline-size: max-content;
  color: var(--text);
  font-weight: 750;
  text-decoration: none;
}

.brand img {
  inline-size: 2.5rem;
  block-size: 2.5rem;
  border-radius: 0.4rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.nav-links a {
  padding: 0.45rem 0.65rem;
  border-radius: 0.35rem;
  color: var(--muted);
  font-size: 0.94rem;
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a:focus,
.nav-links a[aria-current="page"] {
  background: rgba(84, 214, 157, 0.12);
  color: var(--text);
  outline: none;
}

.hero {
  padding: clamp(4.5rem, 11vw, 8.5rem) 1rem clamp(4rem, 8vw, 7rem);
}

.hero-inner,
.split,
.content-grid,
.article {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
}

.hero-inner {
  max-width: 900px;
  margin-left: max(1rem, calc((100% - 1120px) / 2));
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 13ch;
  margin-bottom: 1.3rem;
  font-size: clamp(3rem, 9vw, 6.6rem);
  line-height: 0.95;
  letter-spacing: 0;
}

.page h1 {
  max-width: 15ch;
  font-size: clamp(2.55rem, 7vw, 5.5rem);
}

h2 {
  margin-bottom: 0.85rem;
  font-size: clamp(1.45rem, 3vw, 2.2rem);
  line-height: 1.08;
  letter-spacing: 0;
}

p,
li {
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.72;
}

.lede {
  max-width: 58rem;
  color: var(--text);
  font-size: clamp(1.28rem, 3vw, 1.85rem);
  line-height: 1.32;
}

.hero-inner > p:not(.eyebrow):not(.lede) {
  max-width: 66rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 2rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  padding: 0.78rem 1rem;
  border: 1px solid var(--line);
  border-radius: 0.4rem;
  font-weight: 720;
  text-decoration: none;
}

.button.primary {
  background: var(--green);
  color: #04100d;
  border-color: transparent;
}

.button.secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

.button:hover,
.button:focus {
  transform: translateY(-1px);
  outline: 2px solid rgba(104, 215, 231, 0.55);
  outline-offset: 3px;
}

.band {
  padding: 4rem 1rem;
  border-block: 1px solid rgba(104, 215, 231, 0.13);
  background: rgba(15, 27, 28, 0.72);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.panel {
  min-height: 18rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 0.5rem;
  background: linear-gradient(180deg, var(--panel-strong), var(--panel));
  box-shadow: 0 1rem 3rem var(--shadow);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(2rem, 6vw, 5rem);
  padding: clamp(4rem, 8vw, 7rem) 0;
}

.stack p + p {
  margin-top: 1rem;
}

.page {
  padding: clamp(3.5rem, 8vw, 6rem) 1rem;
}

.article {
  max-width: 850px;
}

.article h2 {
  margin-top: 2.6rem;
}

.article ul {
  display: grid;
  gap: 0.6rem;
  padding-left: 1.2rem;
}

blockquote {
  margin: 2rem 0;
  padding: 1.2rem 1.35rem;
  border-left: 4px solid var(--green);
  border-radius: 0.35rem;
  background: rgba(84, 214, 157, 0.09);
  color: var(--text);
  font-size: 1.18rem;
  line-height: 1.5;
}

.reading-list {
  display: grid;
  gap: 0.75rem;
  margin: 2rem 0;
}

.reading-list a {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.reading-list a:hover,
.reading-list a:focus {
  border-color: var(--green);
  outline: none;
}

.site-footer {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0 3rem;
  border-top: 1px solid rgba(104, 215, 231, 0.16);
}

.site-footer p {
  margin-bottom: 0.5rem;
  font-size: 0.94rem;
}

.site-footer a {
  color: var(--cyan);
}

@media (max-width: 820px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .content-grid,
  .split {
    grid-template-columns: 1fr;
  }

  .panel {
    min-height: auto;
  }
}

@media (max-width: 520px) {
  .hero-inner,
  .split,
  .content-grid,
  .article,
  .site-footer {
    width: min(100% - 1rem, 1120px);
  }

  .hero {
    padding-top: 3.5rem;
  }

  .nav-links a {
    padding-inline: 0.5rem;
  }
}