:root {
  --ink: #07111d;
  --paper: #f4f7f5;
  --mint: #6de4bf;
  --aqua: #8bd9ff;
  --line: rgba(7, 17, 29, .14);
  --muted: #61707d;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "DM Sans", sans-serif;
  font-size: 16px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; }
.section-pad { padding: 7rem max(6vw, 1.5rem); }

.nav-shell {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem max(6vw, 1.5rem);
  border-bottom: 1px solid rgba(255,255,255,.08);
  background: rgba(7,17,29,.9);
  color: #fff;
  backdrop-filter: blur(18px);
}
.brand { display: inline-flex; align-items: center; gap: .7rem; font-family: Manrope, sans-serif; font-weight: 800; letter-spacing: -.02em; }
.mark { display: grid; width: 2rem; height: 2rem; place-items: center; border-radius: .55rem; background: var(--mint); color: var(--ink); font-size: .85rem; }
nav { display: flex; gap: 2rem; font-size: .9rem; color: #c8d1d7; }
nav a:hover { color: var(--mint); }
.nav-cta { padding: .55rem .9rem; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; font-size: .86rem; }

.hero {
  min-height: 92vh;
  overflow: hidden;
  background:
    radial-gradient(circle at 80% 15%, rgba(109,228,191,.19), transparent 30%),
    radial-gradient(circle at 16% 85%, rgba(139,217,255,.12), transparent 25%),
    var(--ink);
  color: #fff;
}
.eyebrow, .section-kicker { display: flex; align-items: center; gap: .7rem; color: #50606b; font-size: .75rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.eyebrow { color: #a9b8c1; }
.eyebrow span { width: 1.8rem; height: 2px; background: var(--mint); }
h1, h2, h3 { margin: 0; font-family: Manrope, sans-serif; line-height: 1.08; }
h1 { max-width: 1000px; margin-top: 2rem; font-size: clamp(3.4rem, 8.5vw, 8.5rem); letter-spacing: -.07em; }
h1 em { color: var(--mint); font-style: normal; }
.hero-copy { max-width: 700px; margin: 2rem 0 0; color: #bac6cd; font-size: clamp(1.1rem, 2vw, 1.35rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .8rem; margin: 2.4rem 0; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 3rem; padding: .72rem 1.15rem; border: 1px solid transparent; border-radius: .85rem; cursor: pointer; font-weight: 700; }
.primary { background: var(--mint); color: var(--ink); }
.primary:hover { background: #8aebca; }
.secondary { border-color: rgba(255,255,255,.22); color: #fff; background: rgba(255,255,255,.03); }
.signal-row { display: flex; flex-wrap: wrap; gap: .7rem; color: #81909a; font-size: .83rem; }
.signal-row span { padding: .4rem .7rem; border: 1px solid rgba(255,255,255,.1); border-radius: 99px; }

.workflow-card { max-width: 1120px; margin: 5rem auto 0; padding: 1.25rem; border: 1px solid rgba(255,255,255,.12); border-radius: 1.5rem; background: rgba(255,255,255,.055); box-shadow: 0 35px 90px rgba(0,0,0,.28); }
.workflow-head { display: flex; align-items: center; justify-content: space-between; padding: .4rem .4rem 1.25rem; }
.workflow-head small { display: block; color: #71818c; font-size: .65rem; letter-spacing: .15em; }
.workflow-head strong { font-family: Manrope, sans-serif; }
.status { display: flex; align-items: center; gap: .5rem; color: #b6c3ca; font-size: .82rem; }
.status i { width: .55rem; height: .55rem; border-radius: 50%; background: var(--mint); box-shadow: 0 0 15px var(--mint); }
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: .65rem; }
.flow-step { display: flex; gap: .8rem; align-items: flex-start; min-height: 100px; padding: 1rem; border: 1px solid rgba(255,255,255,.09); border-radius: 1rem; background: rgba(5,14,24,.7); color: #fff; text-align: left; cursor: pointer; }
.flow-step b { color: #60717c; font-size: .72rem; }
.flow-step span { display: grid; font-weight: 700; }
.flow-step small { margin-top: .28rem; color: #74848f; font-weight: 400; }
.flow-step.active { border-color: var(--mint); background: rgba(109,228,191,.08); transform: translateY(-3px); }
.activity { margin-top: .7rem; padding: 1rem; border-radius: 1rem; background: #fff; color: var(--ink); }
.activity-label { color: #71808a; font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.activity p { margin: .3rem 0 .75rem; }
.progress { height: 4px; overflow: hidden; border-radius: 9px; background: #dbe3df; }
.progress span { display: block; width: 25%; height: 100%; background: var(--mint); transition: width .35s ease; }

.split-heading { display: grid; grid-template-columns: 1.25fr .75fr; gap: 4rem; align-items: end; margin-top: 1.8rem; }
.split-heading h2, .principles h2, .pilot h2 { font-size: clamp(2.6rem, 5vw, 5.4rem); letter-spacing: -.06em; }
.split-heading p { color: var(--muted); font-size: 1.1rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin-top: 5rem; border: 1px solid var(--line); background: var(--line); }
.feature-grid article { min-height: 330px; padding: 2rem; background: var(--paper); }
.feature-no { color: #829099; font-size: .8rem; }
.feature-grid h3 { margin-top: 6rem; font-size: 1.55rem; letter-spacing: -.03em; }
.feature-grid p { color: var(--muted); }

.use-cases { display: grid; grid-template-columns: .9fr 1.1fr; gap: 6vw; background: #0d2030; color: #fff; }
.section-kicker.light { color: var(--mint); }
.use-intro h2, .roadmap h2 { max-width: 620px; margin-top: 1.6rem; font-size: clamp(2.5rem, 4.8vw, 5rem); letter-spacing: -.055em; }
.case-stack article { padding: 2rem 0; border-top: 1px solid rgba(255,255,255,.14); }
.case-stack article:last-child { border-bottom: 1px solid rgba(255,255,255,.14); }
.case-stack span { color: var(--aqua); font-size: .7rem; font-weight: 700; letter-spacing: .14em; }
.case-stack h3 { max-width: 650px; margin-top: .8rem; font-size: 1.6rem; }
.case-stack p { max-width: 600px; color: #9fb0bb; }

.principle-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 7vw; margin-top: 2rem; align-items: start; }
.principle-list { border-top: 1px solid var(--line); }
.principle-list div { display: grid; grid-template-columns: .7fr 1fr; gap: 1rem; padding: 1.35rem 0; border-bottom: 1px solid var(--line); }
.principle-list span { color: var(--muted); }

.roadmap { display: grid; grid-template-columns: 1fr 1fr; gap: 6vw; background: #0b1724; color: #fff; }
.roadmap ol { margin: 0; padding: 0; list-style: none; }
.roadmap li { display: grid; grid-template-columns: 75px 1fr; padding: 1.5rem 0; border-top: 1px solid rgba(255,255,255,.13); }
.roadmap li:last-child { border-bottom: 1px solid rgba(255,255,255,.13); }
.roadmap li span { grid-row: span 2; color: var(--mint); font-size: .76rem; text-transform: uppercase; }
.roadmap li small { color: #8da0ad; font-size: .9rem; }

.pilot-card { display: grid; grid-template-columns: 1.2fr .8fr; gap: 3rem; align-items: end; padding: clamp(2rem, 5vw, 5rem); border-radius: 1.5rem; background: linear-gradient(135deg, #d9fff2, #d8efff); }
.pilot-card .section-kicker { color: #1d6854; }
.pilot-card h2 { margin-top: 1rem; }
.pilot-card p { color: #42545e; font-size: 1.08rem; }
.pilot-card .button { justify-self: start; }
.copy-note { color: #50606b; font-size: .85rem; }

footer { display: grid; grid-template-columns: 1fr auto auto; gap: 2rem; align-items: center; padding: 2rem max(6vw, 1.5rem); background: var(--ink); color: #8797a1; font-size: .85rem; }
footer .brand { color: #fff; }

@media (max-width: 800px) {
  nav { display: none; }
  .nav-cta { font-size: .76rem; }
  .section-pad { padding: 5rem 1.25rem; }
  h1 { font-size: clamp(3.2rem, 16vw, 5.2rem); }
  .flow { grid-template-columns: 1fr 1fr; }
  .split-heading, .use-cases, .principle-wrap, .roadmap, .pilot-card { grid-template-columns: 1fr; gap: 2.5rem; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 240px; }
  .feature-grid h3 { margin-top: 3rem; }
  footer { grid-template-columns: 1fr; gap: .4rem; }
}

@media (max-width: 520px) {
  .brand > span:last-child { display: none; }
  .flow { grid-template-columns: 1fr; }
  .principle-list div { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}