:root {
  color-scheme: dark;
  --bg: #000000;
  --panel: #050607;
  --text: #f4f7f8;
  --muted: #a8b1b6;
  --line: #20272b;
  --line-soft: #11171a;
  --accent: #00e5ff;
  --radius: 16px;
  --radius-sm: 12px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    var(--bg);
  background-size: 64px 64px;
  color: var(--text);
  font: 400 1rem/1.7 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

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

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

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 100;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1rem;
  background: var(--accent);
  color: #001014;
  font-weight: 800;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  padding: 1rem;
}

.nav-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1200px, 100%);
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 18px;
  padding: 0.65rem 0.75rem;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(18px);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.45);
}

.brand-link img {
  width: clamp(10.5rem, 18vw, 14rem);
  border-radius: 10px;
}

.nav-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: clamp(0.75rem, 1.8vw, 1.35rem);
  color: var(--muted);
  font-size: 0.88rem;
  white-space: nowrap;
}

.nav-actions a:not(.login-button):hover,
.site-footer a:hover {
  color: var(--text);
}

.login-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  padding: 0.5rem 0.9rem;
  color: var(--text);
}

.login-button:hover {
  border-color: rgba(255, 255, 255, 0.45);
}

.blog-main {
  width: min(920px, 100%);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4.5rem) 1rem clamp(3.5rem, 8vw, 6rem);
}

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

h1 {
  max-width: 13ch;
  margin-bottom: 1rem;
  font-size: clamp(3rem, 7vw, 5.2rem);
  line-height: 0.98;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0.75rem;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.1;
  letter-spacing: 0;
}

h3 {
  margin: 2rem 0 0.6rem;
  font-size: 1.2rem;
  line-height: 1.25;
}

.lede {
  max-width: 54rem;
  margin-bottom: clamp(1.8rem, 4vw, 3rem);
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.25rem);
}

article {
  border: 1px solid var(--line);
  border-radius: 8px;
  margin-bottom: 1rem;
  padding: clamp(1rem, 2.5vw, 1.35rem);
  background:
    linear-gradient(180deg, rgba(0, 229, 255, 0.06), transparent 58%),
    rgba(3, 7, 8, 0.86);
}

article h2 a:hover,
.article-page a:hover {
  color: var(--accent);
}

article p:last-child {
  margin-bottom: 0;
}

.article-page {
  max-width: 820px;
}

.article-page h1 {
  max-width: 14ch;
}

.article-page p,
.article-page li {
  color: #d5dee3;
}

.article-page ul {
  display: grid;
  gap: 0.55rem;
  margin: 0 0 1.25rem;
  padding-left: 1.2rem;
}

.meta {
  margin-bottom: 0.6rem;
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 0.82rem;
  text-transform: uppercase;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--line-soft);
  padding: 2rem 1rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}

@media (max-width: 720px) {
  .nav-shell {
    display: grid;
  }

  .nav-actions {
    flex-wrap: wrap;
    justify-content: flex-start;
    gap: 0.65rem 0.9rem;
    font-size: 0.84rem;
  }

  h1 {
    font-size: clamp(2.55rem, 10.2vw, 3.6rem);
    line-height: 0.98;
  }
}