:root {
  --blue: #0757f5;
  --blue-dark: #0649d9;
  --ink: #14161a;
  --ink-soft: #4a4f57;
  --ink-faint: #8a909a;
  --line: #e6e8ec;
  --bg: #ffffff;
  --bg-soft: #f7f8fa;
  --radius: 14px;
  --maxw: 1040px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* Nav */
header.nav {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,0.82);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 650; font-size: 16px; color: var(--ink); }
.brand img { width: 26px; height: 26px; border-radius: 6px; }
.nav-links { display: flex; align-items: center; gap: 26px; }
.nav-links a { color: var(--ink-soft); font-size: 14px; font-weight: 500; }
.nav-links a:hover { color: var(--ink); text-decoration: none; }
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--blue); color: #fff; font-weight: 600; font-size: 14px;
  padding: 9px 16px; border-radius: 9px; border: 1px solid var(--blue-dark);
  transition: transform .05s ease, background .15s ease;
}
.btn:hover { background: var(--blue-dark); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: transparent; color: var(--ink); border: 1px solid var(--line); }
.btn.ghost:hover { background: var(--bg-soft); }

/* Hero */
.hero { padding: 84px 0 72px; }
.hero .kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; color: var(--blue);
  background: #eef4ff; border: 1px solid #dbe7ff;
  padding: 5px 12px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 60px); line-height: 1.05;
  letter-spacing: -0.02em; margin: 0 0 18px; font-weight: 700;
}
.hero h1 .accent { color: var(--blue); }
.hero-quote {
  max-width: 640px; margin: 0 0 24px; padding-left: 16px;
  border-left: 2px solid var(--line); color: var(--ink-soft);
}
.hero-quote p { margin: 0 0 3px; font-size: 16px; }
.hero-quote cite { color: var(--ink-faint); font-size: 13px; font-style: normal; }
.hero p.lead {
  font-size: clamp(17px, 2.2vw, 20px); color: var(--ink-soft);
  max-width: 640px; margin: 0 0 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-note { margin-top: 18px; font-size: 13px; color: var(--ink-faint); }

/* Sections */
section { padding: 64px 0; }
section.alt { background: var(--bg-soft); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.eyebrow { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); margin: 0 0 10px; }
h2 { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.01em; margin: 0 0 14px; font-weight: 700; }
.section-lead { color: var(--ink-soft); max-width: 620px; margin: 0 0 36px; font-size: 16px; }

/* Core workflows */
.workflow-list { border-top: 1px solid var(--line); }
.workflow {
  display: grid; grid-template-columns: 52px minmax(0, 1fr) minmax(270px, 360px);
  gap: 24px; align-items: center; padding: 28px 0; border-bottom: 1px solid var(--line);
}
.workflow-number { font-family: var(--mono); font-size: 13px; font-weight: 700; color: var(--blue); align-self: start; padding-top: 4px; }
.workflow-copy h3 { margin: 2px 0 7px; font-size: 20px; line-height: 1.3; }
.workflow-copy > p:last-child { margin: 0; color: var(--ink-soft); font-size: 14px; }
.workflow-kicker { margin: 0; color: var(--ink-faint); font-family: var(--mono); font-size: 12px; font-weight: 600; text-transform: uppercase; }
pre.topology { border-radius: 8px; padding: 14px 16px; font-size: 12px; line-height: 1.55; }
.reverse-command {
  display: grid; grid-template-columns: minmax(0, .8fr) minmax(400px, 1.2fr);
  gap: 32px; align-items: center; margin-top: 32px; padding: 24px;
  background: var(--bg); border: 1px solid var(--line); border-radius: 8px;
}
.reverse-command p:not(.code-label) { margin: 0; color: var(--ink-soft); font-size: 14px; }

/* Feature grid */
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--bg); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 22px;
}
section.alt .card { background: var(--bg); }
.card .ico {
  width: 40px; height: 40px; border-radius: 10px; display: grid; place-items: center;
  background: #eef4ff; color: var(--blue); margin-bottom: 14px;
}
.card h3 { font-size: 16px; margin: 0 0 6px; font-weight: 650; }
.card p { font-size: 14px; color: var(--ink-soft); margin: 0; }

/* Two-column: how it works + code */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.steps { list-style: none; margin: 0; padding: 0; }
.steps li { display: flex; gap: 14px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.steps li:last-child { border-bottom: none; }
.steps .n {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: var(--blue); color: #fff; font-size: 13px; font-weight: 700;
  display: grid; place-items: center;
}
.steps b { display: block; font-size: 15px; }
.steps span { font-size: 14px; color: var(--ink-soft); }
.how-demo { min-width: 0; }
.how-demo .code-label:not(:first-child) { margin-top: 18px; }
.ascii-ui { color: #cdd6e5; line-height: 1.45; }

pre {
  margin: 0; background: #0f1115; color: #e6e9ef;
  border-radius: var(--radius); padding: 18px 20px; overflow-x: auto;
  font-family: var(--mono); font-size: 13px; line-height: 1.7;
  border: 1px solid #1d2129;
}
pre .c { color: #6b7280; }
pre .p { color: #7aa2ff; }
.code-label { font-size: 12px; font-weight: 600; color: var(--ink-faint); text-transform: uppercase; letter-spacing: .06em; margin: 0 0 8px; }

/* Security list */
.sec-list { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 28px; margin: 0; padding: 0; list-style: none; }
.sec-list li { display: flex; gap: 10px; font-size: 14.5px; color: var(--ink-soft); }
.sec-list li svg { flex: none; margin-top: 3px; color: var(--blue); }

/* Requirements */
.req { display: flex; flex-wrap: wrap; gap: 12px; }
.chip {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--bg); border: 1px solid var(--line); border-radius: 999px;
  padding: 8px 16px; font-size: 14px; font-weight: 500; color: var(--ink-soft);
}
.chip svg { color: var(--blue); }

/* CTA */
.cta { text-align: center; padding: 72px 0; }
.cta h2 { margin-bottom: 10px; }
.cta p { color: var(--ink-soft); margin: 0 auto 28px; max-width: 480px; }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 36px 0; }
.foot { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; }
.foot .brand { font-size: 15px; }
.foot .meta { font-size: 13px; color: var(--ink-faint); display: flex; gap: 20px; flex-wrap: wrap; }
.foot .meta a { color: var(--ink-faint); }
.foot .meta a:hover { color: var(--ink); }

@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr 1fr; }
  .split { grid-template-columns: 1fr; gap: 28px; }
  .sec-list { grid-template-columns: 1fr; }
  .workflow { grid-template-columns: 40px minmax(0, 1fr); }
  .workflow .topology { grid-column: 2; }
  .reverse-command { grid-template-columns: 1fr; gap: 18px; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .nav-links a:not(.btn) { display: none; }
  .hero { padding: 56px 0 48px; }
  .workflow { grid-template-columns: 1fr; gap: 10px; }
  .workflow .topology { grid-column: 1; }
  .reverse-command { padding: 18px; }
}