:root {
  color-scheme: dark;
  --bg: #0b1220;
  --bg-elevated: #101a2d;
  --panel: rgba(19, 30, 50, 0.92);
  --panel-border: rgba(139, 163, 199, 0.16);
  --text: #e7eefc;
  --muted: #9fb0cd;
  --heading: #f8fbff;
  --accent: #7dd3fc;
  --accent-strong: #38bdf8;
  --shadow: 0 28px 80px rgba(2, 8, 23, 0.48);
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  font-family: "Segoe UI", "Inter", "Helvetica Neue", sans-serif;
  line-height: 1.7;
  background:
    radial-gradient(circle at top, rgba(56, 189, 248, 0.16), transparent 34%),
    linear-gradient(180deg, #0b1220 0%, #09111d 100%);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  color: #b6ecff;
}

.site-shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 28px;
  padding: 18px 22px;
  border: 1px solid var(--panel-border);
  border-radius: 15px;
  background: rgba(8, 15, 28, 0.72);
  backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  color: var(--heading);
  font-size: 1.4rem;
}

.brand:hover {
  color: var(--heading);
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 15px;
  background: linear-gradient(180deg, rgba(56, 189, 248, 0.22), rgba(125, 211, 252, 0.08));
  color: var(--accent);
}

.brand-mark svg {
  width: 26px;
  height: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.6;
  stroke-linejoin: round;
}

.brand-subtitle {
  margin-left: 0.45rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.site-nav a {
  display: inline-flex;
  align-items: center;
  padding: 0.6rem 0.95rem;
  border-radius: 999px;
  color: var(--muted);
}

.site-nav a:hover {
  background: rgba(125, 211, 252, 0.09);
  color: var(--heading);
}

.site-main {
  padding: 0 10px;
}

.site-main h1:first-child,
.site-main p:first-child img {
  margin-top: 0;
}

h1, h2, h3 {
  color: var(--heading);
  line-height: 1.15;
}

h1 {
  font-size: clamp(2rem, 4.8vw, 3.4rem);
  margin: 0 0 1rem;
}

h2 {
  margin-top: 2.6rem;
  font-size: 1.6rem;
}

h3 {
  margin-top: 1.6rem;
  font-size: 1.08rem;
}

p, li {
  color: var(--muted);
  font-size: 1rem;
}

strong {
  color: var(--heading);
}

code, pre {
  font-family: "SFMono-Regular", "Consolas", "Liberation Mono", monospace;
}

code {
  padding: 0.16rem 0.42rem;
  border-radius: 999px;
  background: rgba(125, 211, 252, 0.12);
  color: #c6f4ff;
}

pre {
  overflow-x: auto;
  padding: 1rem 1.15rem 1.1rem;
  border: 1px solid var(--panel-border);
  border-radius: 15px;
  background: #09101c;
}

pre code {
  display: block;
  padding: 0;
  background: transparent;
}

blockquote {
  margin: 1.5rem 0;
  padding: 0.9rem 1.1rem;
  border-left: 4px solid var(--accent);
  background: rgba(19, 30, 50, 0.72);
  color: var(--text);
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--panel-border);
  border-radius: 15px;
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: rgba(19, 30, 50, 0.72);
}

th, td {
  border: 1px solid var(--panel-border);
  padding: 0.75rem 0.85rem;
  text-align: left;
}

th {
  color: var(--heading);
}

@media (max-width: 720px) {
  .site-shell {
    width: min(100%, calc(100% - 20px));
    padding: 18px 0 44px;
  }

  .site-header {
    padding: 16px 18px;
  }

  .site-main {
    padding: 0 4px;
  }
}