:root {
  --ack-red: #ff2d2d;
  --ack-ink: #0f0f0f;
  --ack-muted: #464646;
  --ack-fog: #c3c3c3;
  --ack-paper: #f7f7f7;
  --ack-blue: #a3ddef;
  --ack-blue-deep: #559db6;

  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;

  --border-strong: 2px solid var(--ack-ink);
  --border-soft: 2px solid rgba(0, 0, 0, 0.28);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  color: var(--ack-ink);
  background: linear-gradient(180deg, var(--ack-paper), rgba(163, 221, 239, 0.18));
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
}

a { color: inherit; }
a:visited { color: inherit; }
a:hover { color: var(--ack-red); }
a:focus-visible {
  outline: 3px solid rgba(85, 157, 182, 0.55);
  outline-offset: 2px;
  border-radius: 8px;
}

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

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 20px;
}

.nav {
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  background: rgba(247, 247, 247, 0.8);
  border-bottom: 1px solid rgba(15, 15, 15, 0.12);
  z-index: 10;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0;
}

.brand {
  font-weight: 900;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.nav__links {
  display: flex;
  gap: 14px;
  font-size: 14px;
}

.nav__links a {
  text-decoration: none;
  padding: 6px 8px;
  border-radius: var(--radius-sm);
}

.nav__links a:hover {
  background: rgba(255, 45, 45, 0.08);
}

.hero {
  padding: 28px 0 14px;
}

.hero__banner {
  width: 100%;
  height: auto;
  border: var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  background: #fff;
}

.title {
  margin: 22px 0 8px;
  font-size: 44px;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.1;
  display: inline-block;
  padding-bottom: 6px;
  border-bottom: 8px solid var(--ack-red);
}

.lede {
  margin: 0 0 18px;
  color: var(--ack-muted);
  font-size: 18px;
  line-height: 1.6;
}

.h2 {
  margin: 34px 0 10px;
  font-size: 22px;
  font-weight: 900;
  letter-spacing: -0.01em;
}

.p {
  margin: 0;
  color: var(--ack-muted);
  line-height: 1.7;
}

.cmd-card {
  background: rgba(255, 255, 255, 0.92);
  border: var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 16px 18px;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.08);
}

.cmd-card__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
}

.cmd-card__row pre {
  min-width: 0;
}

.copy-btn {
  justify-self: end;
}

.cmd-card__label {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 12px;
  font-weight: 800;
  color: var(--ack-blue-deep);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.cmd-card__label--agent {
  color: var(--ack-red);
}

.cmd-card--agent {
  border: 2px solid rgba(255, 45, 45, 0.34);
  background: rgba(255, 255, 255, 0.96);
}

.cmd-card__note {
  margin: 10px 0 0;
  color: var(--ack-muted);
  font-size: 13px;
  line-height: 1.6;
}

.cmd-card pre {
  margin: 0;
  overflow: auto;
  white-space: pre;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.btn {
  display: inline-block;
  text-decoration: none;
  cursor: pointer;
  font-weight: 900;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: var(--border-strong);
  transition: transform 120ms ease, background 120ms ease, color 120ms ease;
}

.btn-small {
  font-size: 12px;
  padding: 8px 12px;
}

button.btn {
  appearance: none;
  -webkit-appearance: none;
  font-family: inherit;
}

.btn:hover { transform: translateY(-1px); }

.btn:focus-visible {
  outline: 3px solid rgba(85, 157, 182, 0.55);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--ack-red);
  color: var(--ack-ink);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.92);
  color: var(--ack-ink);
}

.btn-secondary:hover {
  background: rgba(255, 45, 45, 0.08);
  color: var(--ack-red);
}

.bullets {
  margin: 0;
  padding-left: 18px;
  color: var(--ack-muted);
  line-height: 1.7;
}

.footer {
  margin: 44px 0 60px;
  padding-top: 18px;
  border-top: 1px solid rgba(15, 15, 15, 0.12);
}

.muted { color: var(--ack-muted); }

@media (max-width: 520px) {
  .title { font-size: 34px; }
  .nav__links { display: none; }
}