:root {
  color-scheme: dark;
  --bg: #070b16;
  --bg-2: #0d1324;
  --ink: #f5f2ec;
  --muted: #aeb7cd;
  --quiet: #79849b;
  --line: rgba(255, 255, 255, 0.12);
  --line-strong: rgba(255, 255, 255, 0.2);
  --panel: rgba(255, 255, 255, 0.055);
  --panel-strong: rgba(255, 255, 255, 0.085);
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --green: #34d399;
  --amber: #fbbf24;
  --rose: #fb7185;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 20% 0%, rgba(139, 92, 246, 0.18), transparent 30rem),
    linear-gradient(180deg, #070b16 0%, #0b1221 46%, #080b14 100%);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  color: #ffffff;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 20;
  transform: translateY(-150%);
  border: 1px solid var(--line-strong);
  background: #fff;
  color: #070b16;
  padding: 0.6rem 0.85rem;
  border-radius: 0.45rem;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 11, 22, 0.88);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  min-height: 4.5rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 2rem;
  height: 2rem;
}

.nav-links,
.footer-links {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.nav-links a,
.footer-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
}

.nav-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.85rem;
  border-radius: 0.55rem;
  padding: 0.7rem 1rem;
  background: #f5f2ec;
  color: #070b16;
  font-weight: 800;
  line-height: 1.1;
}

.button.secondary {
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.055);
  color: var(--ink);
}

.hero,
.section,
.article-shell,
.site-footer {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(20rem, 0.78fr);
  gap: 3rem;
  align-items: center;
  padding-top: 5rem;
  padding-bottom: 4rem;
}

.eyebrow {
  margin: 0 0 1rem;
  color: var(--cyan);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  color: #ffffff;
  line-height: 1.04;
  letter-spacing: 0;
}

h1 {
  max-width: 13ch;
  font-size: clamp(3rem, 8vw, 6.8rem);
}

h2 {
  font-size: clamp(2rem, 4vw, 3.4rem);
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
}

p {
  margin: 0;
}

.lede {
  max-width: 48rem;
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: clamp(1.08rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.actions {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
  margin-top: 1.8rem;
}

.hero-media {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.35);
}

.hero-media img {
  width: 100%;
  min-height: 21rem;
  object-fit: cover;
}

.answer-box {
  border-left: 4px solid var(--cyan);
  background: rgba(34, 211, 238, 0.08);
  padding: 1.2rem 1.25rem;
}

.answer-box strong {
  color: #ffffff;
}

.section {
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.section-header {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(18rem, 0.55fr);
  gap: 2rem;
  align-items: end;
  margin-bottom: 1.7rem;
}

.section-header p,
.article-meta,
.muted {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.table-card,
.callout {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 1.2rem;
}

.card h3,
.table-card h3 {
  margin-bottom: 0.65rem;
}

.card p,
.table-card p,
.callout p,
li {
  color: var(--muted);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.tag {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
  color: var(--muted);
  padding: 0.38rem 0.55rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
}

.comparison {
  width: 100%;
  border-collapse: collapse;
  overflow: hidden;
}

.comparison th,
.comparison td {
  border-bottom: 1px solid var(--line);
  padding: 1rem;
  text-align: left;
  vertical-align: top;
}

.comparison th {
  color: #ffffff;
  font-size: 0.88rem;
}

.comparison td {
  color: var(--muted);
}

.article-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 18rem;
  gap: 2.5rem;
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.article {
  max-width: 780px;
}

.article h1 {
  max-width: 16ch;
  font-size: clamp(2.7rem, 6vw, 5.2rem);
}

.article h2 {
  margin-top: 3rem;
  font-size: clamp(1.7rem, 3vw, 2.4rem);
}

.article h3 {
  margin-top: 2rem;
}

.article p,
.article ul,
.article ol {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 1.04rem;
}

.article li + li {
  margin-top: 0.55rem;
}

.article a {
  color: #d7ecff;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.toc {
  position: sticky;
  top: 6rem;
  align-self: start;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.045);
  padding: 1rem;
}

.toc p {
  color: #ffffff;
  font-weight: 800;
  margin-bottom: 0.7rem;
}

.toc a {
  display: block;
  color: var(--muted);
  font-size: 0.9rem;
  padding: 0.35rem 0;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
  padding-bottom: 2rem;
  color: var(--quiet);
}

.small {
  font-size: 0.9rem;
}

@media (max-width: 920px) {
  .hero,
  .section-header,
  .article-shell {
    grid-template-columns: 1fr;
  }

  .grid.three,
  .grid.two {
    grid-template-columns: 1fr;
  }

  .toc {
    position: static;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  .hero {
    padding-top: 3rem;
  }
}

@media print {
  body {
    background: #ffffff;
    color: #111827;
  }

  .site-header,
  .site-footer,
  .toc,
  .actions {
    display: none;
  }

  .article-shell,
  .section,
  .hero {
    display: block;
    padding: 0;
    max-width: none;
  }

  h1,
  h2,
  h3,
  p,
  li {
    color: #111827;
  }
}