:root {
  --ink: #050507;
  --paper: #eceae4;
  --mute: #8d8a82;
  --line: rgba(236, 234, 228, .12);
  --glass: rgba(8, 8, 10, .78);
  --bad: #ff5c6a;
  --ok: #c8f5c0;
  --display: "Cormorant Garamond", Georgia, serif;
  --ui: Syne, ui-sans-serif, system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; color-scheme: dark; }
body {
  min-height: 100vh;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--ui);
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
::selection { background: #fff; color: #000; }

.fx, .fx-g, .fx-s {
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
}
.fx {
  background:
    radial-gradient(ellipse 70% 45% at 12% -8%, rgba(255,255,255,.14), transparent 50%),
    radial-gradient(ellipse 40% 30% at 100% 100%, rgba(255,255,255,.05), transparent 45%),
    #050507 url("https://hydraintel.site/assets/img/bg.png?v=8") center / 120% no-repeat;
  opacity: .55;
}
.fx-g {
  z-index: 1;
  opacity: .08;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.fx-s {
  z-index: 1;
  background: repeating-linear-gradient(180deg, transparent 0 2px, rgba(0,0,0,.14) 2px 3px);
  opacity: .28;
}

.shell {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.side {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 18px 28px;
  border-right: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 20px;
  letter-spacing: .12em;
}
.brand img { width: 28px; height: 28px; }
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .28em;
  color: var(--mute);
  margin-top: 2px;
}
.find {
  width: 100%;
  background: rgba(255,255,255,.04);
  border: 1px solid var(--line);
  color: var(--paper);
  padding: 10px 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .06em;
  outline: none;
}
.find:focus { border-color: rgba(255,255,255,.35); }
.nav {
  overflow: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-right: 4px;
}
.nav b {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .22em;
  color: var(--mute);
  margin: 14px 8px 6px;
  font-weight: 500;
}
.nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 10px;
  font-size: 13px;
  color: #c9c6be;
  border-left: 2px solid transparent;
}
.nav a:hover { color: #fff; background: rgba(255,255,255,.04); }
.nav a.on {
  color: #fff;
  border-left-color: #fff;
  background: rgba(255,255,255,.06);
}
.nav a span {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--mute);
}
.side-foot {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--mute);
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.side-foot a { border-bottom: 1px solid var(--line); }

.main { padding: 42px 56px 90px; max-width: 920px; }
.kicker {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .34em;
  color: var(--mute);
  margin-bottom: 14px;
}
h1 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(38px, 6vw, 64px);
  line-height: .92;
  margin-bottom: 18px;
}
h1 em { font-style: italic; font-weight: 500; }
.lede {
  font-size: 16px;
  line-height: 1.55;
  color: #c7c4bb;
  max-width: 640px;
  margin-bottom: 36px;
}
h2 {
  font-family: var(--display);
  font-size: 28px;
  font-weight: 500;
  margin: 42px 0 12px;
}
h3 {
  font-size: 13px;
  letter-spacing: .16em;
  text-transform: uppercase;
  margin: 28px 0 10px;
  color: #fff;
}
p, li { line-height: 1.65; color: #c7c4bb; }
p + p { margin-top: 12px; }
ul, ol { padding-left: 18px; margin: 10px 0 18px; }
li { margin: 6px 0; }
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 12px;
  margin: 22px 0 8px;
}
.card {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.03);
  padding: 16px 16px 18px;
  min-height: 120px;
}
.card strong {
  display: block;
  font-size: 12px;
  letter-spacing: .14em;
  margin-bottom: 8px;
  color: #fff;
}
.card span { font-size: 13px; color: #bdbab2; line-height: 1.5; }
.call {
  border: 1px solid var(--line);
  padding: 16px 18px;
  margin: 22px 0;
  background: linear-gradient(90deg, rgba(255,255,255,.05), transparent);
}
.call.warn { border-color: rgba(255,92,106,.35); }
.call b {
  display: block;
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .2em;
  margin-bottom: 6px;
  color: #fff;
}
table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0 28px;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
th {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .16em;
  color: var(--mute);
  font-weight: 500;
}
code, .mono {
  font-family: var(--mono);
  font-size: 12px;
  background: rgba(255,255,255,.06);
  padding: 1px 6px;
}
pre {
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
  padding: 16px 18px;
  border: 1px solid var(--line);
  background: rgba(0,0,0,.35);
  overflow: auto;
  margin: 14px 0 22px;
  color: #e8e4da;
}
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 8px; }
.pill {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .12em;
  border: 1px solid var(--line);
  padding: 6px 10px;
}
.steps { counter-reset: st; list-style: none; padding: 0; }
.steps li {
  counter-increment: st;
  position: relative;
  padding: 14px 0 14px 52px;
  border-bottom: 1px solid var(--line);
}
.steps li::before {
  content: counter(st, decimal-leading-zero);
  position: absolute;
  left: 0; top: 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: #fff;
}
.pager {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 56px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}
.pager a {
  border: 1px solid var(--line);
  padding: 14px 16px;
  min-width: 42%;
}
.pager a:hover { background: rgba(255,255,255,.05); }
.pager small {
  display: block;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .2em;
  color: var(--mute);
  margin-bottom: 4px;
}
.toc a { display: block; padding: 6px 0; color: #bdbab2; border-bottom: 1px solid var(--line); }
.toc a:hover { color: #fff; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side {
    position: relative;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  .nav { max-height: 280px; }
  .main { padding: 28px 20px 70px; }
}