:root {
  color-scheme: dark;
  --bg: #05070b;
  --panel: rgba(14, 20, 31, 0.86);
  --panel-strong: rgba(18, 27, 41, 0.96);
  --line: rgba(127, 255, 212, 0.18);
  --line-2: rgba(148, 163, 184, 0.18);
  --text: #edf7ff;
  --muted: #9fb0c7;
  --soft: #7487a3;
  --green: #6ef3b6;
  --cyan: #67e8f9;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --container: 1100px;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
  scrollbar-color: rgba(110, 243, 182, 0.62) rgba(5, 7, 11, 0.72);
  scrollbar-width: thin;
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(5, 7, 11, 0.72);
}

::-webkit-scrollbar-thumb {
  border: 2px solid rgba(5, 7, 11, 0.72);
  border-radius: 999px;
  background: linear-gradient(180deg, var(--green), var(--cyan));
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 12% 10%, rgba(103, 232, 249, 0.12), transparent 28%),
    radial-gradient(circle at 86% 4%, rgba(110, 243, 182, 0.12), transparent 24%),
    linear-gradient(180deg, #05070b 0%, #08101a 48%, #05070b 100%);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(127, 255, 212, 0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 255, 212, 0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.88), rgba(0, 0, 0, 0.16));
}

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

site-navbar,
site-footer {
  display: block;
}

p {
  color: var(--muted);
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin-inline: auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(127, 255, 212, 0.12);
  background: rgba(5, 7, 11, 0.78);
  backdrop-filter: blur(18px);
}

.nav {
  display: flex;
  min-height: 72px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 900;
  letter-spacing: 0.01em;
}

.prompt-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(110, 243, 182, 0.08);
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  box-shadow: 0 0 30px rgba(110, 243, 182, 0.12);
}

.brand small {
  display: block;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 600;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 800;
}

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(14, 20, 31, 0.86);
  color: var(--text);
}

.mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 5px auto;
  border-radius: 999px;
  background: currentColor;
}

.mobile-panel {
  display: none;
  border-top: 1px solid var(--line-2);
  padding: 10px 0 18px;
}

.mobile-panel.is-open {
  display: grid;
  gap: 8px;
}

.mobile-panel a {
  border: 1px solid transparent;
  border-radius: 12px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  font-weight: 800;
  padding: 10px 12px;
}

.mobile-panel a:hover,
.mobile-panel a:focus-visible {
  border-color: rgba(110, 243, 182, 0.22);
  background: rgba(110, 243, 182, 0.06);
  color: var(--green);
  outline: none;
}

.nav-links a,
.back-link,
.article-card,
.pill-link {
  transition:
    transform 0.2s ease,
    border-color 0.2s ease,
    background 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.nav-links a:hover,
.nav-links a:focus-visible,
.back-link:hover,
.back-link:focus-visible {
  color: var(--green);
  outline: none;
}

.hero {
  padding: 84px 0 38px;
}

.kicker {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 14px;
  font-weight: 850;
}

h1,
h2,
h3 {
  margin-top: 0;
  line-height: 1.05;
}

h1 {
  max-width: 940px;
  margin-bottom: 20px;
  font-size: clamp(42px, 6.5vw, 88px);
  letter-spacing: -0.055em;
}

h2 {
  margin: 52px 0 14px;
  font-size: clamp(28px, 3vw, 42px);
  letter-spacing: -0.03em;
}

h3 {
  margin-bottom: 8px;
  font-size: 22px;
}

.lead {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(18px, 2vw, 22px);
}

.hero-actions,
.related-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn,
.back-link,
.pill-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(14, 20, 31, 0.74);
  color: var(--text);
  font-weight: 850;
  padding: 10px 16px;
}

.btn-primary {
  border-color: rgba(110, 243, 182, 0.62);
  background: linear-gradient(135deg, rgba(110, 243, 182, 0.92), rgba(103, 232, 249, 0.82));
  color: #061017;
}

.btn:hover,
.btn:focus-visible,
.pill-link:hover,
.pill-link:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(110, 243, 182, 0.48);
  background: rgba(110, 243, 182, 0.08);
  outline: none;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  padding: 34px 0 90px;
}

.article-card,
.panel,
.article-shell {
  border: 1px solid var(--line-2);
  border-radius: 24px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.article-card {
  display: flex;
  min-height: 500px;
  flex-direction: column;
  padding: 24px;
}

.article-media {
  width: 100%;
  aspect-ratio: 2.05;
  display: block;
  object-fit: cover;
  margin-bottom: 18px;
  border: 1px solid rgba(127, 255, 212, 0.12);
  border-radius: 18px;
  background: rgba(4, 8, 13, 0.7);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.02);
  transition:
    border-color 0.2s ease,
    filter 0.2s ease,
    transform 0.2s ease;
}

.article-media-stack {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 10px;
  margin-bottom: 18px;
}

.article-media-stack .article-media {
  aspect-ratio: auto;
  height: 100%;
  margin-bottom: 0;
}

.article-card-book .article-media-stack {
  min-height: clamp(290px, 28vw, 380px);
}

.article-card-book .article-media-stack .article-media {
  min-height: clamp(290px, 28vw, 380px);
}

.article-media-stack .article-media:first-child {
  object-position: 50% 18%;
}

.article-media-stack .article-media:last-child {
  object-position: 50% 38%;
}

.article-card:hover,
.article-card:focus-visible {
  transform: translateY(-5px);
  border-color: rgba(110, 243, 182, 0.46);
  background: rgba(18, 27, 41, 0.94);
  box-shadow:
    0 28px 86px rgba(0, 0, 0, 0.42),
    0 0 0 1px rgba(110, 243, 182, 0.1);
  outline: none;
}

.article-card:hover .article-media,
.article-card:focus-visible .article-media {
  border-color: rgba(110, 243, 182, 0.42);
  filter: saturate(1.16) brightness(1.06);
  transform: translateY(-2px);
}

.meta {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 12px;
  font-weight: 850;
}

.article-card h2 {
  margin: 12px 0 10px;
  font-size: 25px;
}

.article-card p {
  margin-bottom: 0;
}

.read-more {
  display: inline-flex;
  width: fit-content;
  margin-top: auto;
  padding-top: 18px;
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-weight: 850;
}

.article-shell {
  max-width: 900px;
  margin: 0 auto 90px;
  padding: clamp(24px, 5vw, 58px);
}

.article-shell p,
.article-shell li {
  color: var(--muted);
  font-size: 18px;
}

.article-shell strong {
  color: var(--text);
}

.book-gallery {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 14px;
  margin: 34px 0;
}

.book-gallery img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  border: 1px solid rgba(127, 255, 212, 0.14);
  border-radius: 20px;
  background: rgba(4, 8, 13, 0.7);
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.32);
}

.book-gallery img:first-child {
  object-position: 50% 20%;
}

.book-gallery img:last-child {
  object-position: 50% 45%;
}

.article-shell ul,
.article-shell ol {
  display: grid;
  gap: 10px;
  padding-left: 24px;
}

.callout {
  margin: 34px 0;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(110, 243, 182, 0.06);
  padding: 20px;
}

.terminal {
  margin: 30px 0;
  border: 1px solid var(--line-2);
  border-radius: 18px;
  background: rgba(4, 8, 13, 0.88);
  padding: 18px;
  color: var(--muted);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  overflow-x: auto;
}

.terminal span {
  color: var(--green);
}

.footer {
  border-top: 1px solid var(--line-2);
  padding: 30px 0;
  color: var(--soft);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
}

@media (max-width: 900px) {
  .article-grid {
    grid-template-columns: 1fr;
  }

  .article-card {
    min-height: auto;
  }

  .article-card-book .article-media-stack,
  .article-card-book .article-media-stack .article-media {
    min-height: 340px;
  }

  .book-gallery {
    grid-template-columns: 1fr;
  }

  .book-gallery img {
    height: min(92vw, 520px);
  }

  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: inline-block;
  }
}

@media (max-width: 600px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .hero {
    padding-top: 52px;
  }

  .btn,
  .back-link {
    width: 100%;
  }
}