:root {
  --bg: #050a0e;
  --panel: #0a1520;
  --panel-2: #0f1f2e;
  --text: #f0f4f8;
  --muted: rgba(240, 244, 248, 0.68);
  --line: rgba(0, 212, 255, 0.16);
  --line-strong: rgba(0, 212, 255, 0.35);
  --leaf: #5cb87a;
  --leaf-dim: rgba(92, 184, 122, 0.15);
  --electric: #00d4ff;
  --sand: #e8dcc8;
  --sand-dim: rgba(232, 220, 200, 0.75);
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "DM Sans", sans-serif;
  background:
    radial-gradient(
      circle at top right,
      rgba(0, 212, 255, 0.12),
      transparent 34%
    ),
    radial-gradient(
      circle at bottom left,
      rgba(92, 184, 122, 0.1),
      transparent 26%
    ),
    var(--bg);
  color: var(--text);
}

a {
  color: inherit;
}

.page-shell {
  min-height: 100vh;
  padding: 2rem 1.25rem 4rem;
}

.page-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 2rem;
}

.brand {
  text-decoration: none;
  display: inline-flex;
  flex-direction: column;
  gap: 0.15rem;
}

.brand strong {
  font-family: "Syne", sans-serif;
  font-size: 1.3rem;
  letter-spacing: -0.03em;
}

.brand span {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--leaf);
}

.back-link {
  text-decoration: none;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.back-link:hover {
  color: var(--electric);
}

.hero-card,
.content-card,
.note-card,
.post-card {
  border: 1px solid var(--line);
  background: linear-gradient(
    180deg,
    rgba(10, 21, 32, 0.96),
    rgba(5, 10, 14, 0.96)
  );
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.22);
}

.hero-card {
  padding: 2.2rem;
  border-radius: 24px;
}

.eyebrow {
  margin: 0 0 0.9rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--leaf);
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Syne", sans-serif;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h1 {
  font-size: clamp(2.3rem, 5vw, 4.8rem);
}
h2 {
  font-size: clamp(1.6rem, 3vw, 2.6rem);
}
h3 {
  font-size: 1.2rem;
}

.lede {
  margin: 1rem 0 0;
  max-width: 62ch;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-top: 1.6rem;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.85rem 1.15rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-family: "Syne", sans-serif;
  font-size: 0.82rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.button {
  background: var(--electric);
  color: #061018;
}

.button-secondary {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(0, 212, 255, 0.05);
}

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

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

.content-card,
.note-card,
.post-card {
  border-radius: 20px;
  padding: 1.5rem;
}

.content-card h2,
.note-card h2,
.post-card h2 {
  margin-bottom: 0.8rem;
}

.content-card p,
.note-card p,
.post-card p,
.content-card li,
.note-card li,
.post-card li {
  color: var(--muted);
  line-height: 1.8;
}

.list-clean {
  margin: 0;
  padding: 0;
  list-style: none;
}

.list-clean li + li {
  margin-top: 0.75rem;
}

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

.post-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sand-dim);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--leaf-dim);
  color: var(--leaf);
}

.post-link,
.text-link {
  color: var(--electric);
  text-decoration: none;
}

.post-link:hover,
.text-link:hover {
  text-decoration: underline;
}

.section-title {
  margin: 2rem 0 1rem;
  font-size: 1rem;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--leaf);
}

.notice {
  border-left: 3px solid var(--leaf);
  padding: 1rem 1.1rem;
  background: rgba(92, 184, 122, 0.08);
  color: var(--sand);
  line-height: 1.7;
}

.article {
  max-width: 760px;
}

.article h1 {
  margin-bottom: 0.9rem;
}

.article p {
  color: var(--muted);
  line-height: 1.85;
}

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

.article ul {
  color: var(--muted);
  line-height: 1.8;
  padding-left: 1.2rem;
}

.footer-note {
  margin-top: 1.5rem;
  color: var(--sand-dim);
  font-size: 0.92rem;
  line-height: 1.7;
}

@media (max-width: 900px) {
  .grid-2,
  .post-grid {
    grid-template-columns: 1fr;
  }
  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }
  .hero-card {
    padding: 1.4rem;
  }
}