.hero {
  position: relative;
  min-height: min(760px, calc(100svh - 5.25rem));
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(420px, 0.96fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 5rem);
  overflow: hidden;
  padding: clamp(4rem, 8vw, 7.5rem) max(1.5rem, calc((100vw - var(--container)) / 2));
  color: var(--paper);
  background: var(--ink);
}
.hero-grid {
  position: absolute;
  inset: 0;
  opacity: 0.14;
  pointer-events: none;
  background-image: linear-gradient(#6c8874 1px, transparent 1px), linear-gradient(90deg, #6c8874 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(90deg, transparent, #000 55%, #000);
}
.hero-content, .hero-visual, .hero-scroll { position: relative; z-index: 1; }
.hero-content { max-width: 660px; }
.hero h1 {
  max-width: 780px;
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.6vw, 5.45rem);
  font-weight: 700;
  letter-spacing: -0.055em;
  line-height: 1.06;
  text-wrap: balance;
}
.hero-copy {
  max-width: 610px;
  margin: 1.6rem 0 0;
  color: #c6cec5;
  font-size: clamp(1rem, 1.25vw, 1.15rem);
  line-height: 1.8;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }
.hero-footnote {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  margin-top: 3.25rem;
  color: #9eaca1;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
}
.status-dot, .outcome-spark {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgb(200 240 106 / 12%);
}
.hero-visual {
  min-height: 440px;
  max-width: 600px;
  width: 100%;
  justify-self: end;
  border: 1px solid #32473d;
  border-radius: 1rem;
  background: linear-gradient(145deg, #172820, #101a16 70%);
  box-shadow: 0 28px 100px rgb(0 0 0 / 22%);
  animation: visual-arrive 700ms cubic-bezier(.2,.75,.25,1) both;
}
.visual-meta {
  position: absolute;
  top: 1.2rem;
  right: 1.35rem;
  left: 1.35rem;
  display: flex;
  justify-content: space-between;
  color: #829287;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.14em;
}
.visual-lines {
  position: absolute;
  inset: 10% 4% 8%;
  width: 92%;
  height: 82%;
  overflow: visible;
}
.visual-lines path { stroke: #587864; stroke-width: 1.4; stroke-dasharray: 5 6; }
.visual-lines circle { fill: var(--lime); stroke: var(--ink); stroke-width: 5; }
.visual-node {
  position: absolute;
  width: 43%;
  min-height: 102px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
  padding: 1rem 1.15rem;
  border: 1px solid #496153;
  border-radius: 0.65rem;
  background: #1a2b22;
  box-shadow: 0 14px 35px rgb(0 0 0 / 18%);
}
.visual-node--source { top: 29%; left: 8%; }
.visual-node--data { top: 17%; right: 7%; background: #22382c; }
.visual-node--system { right: 7%; bottom: 16%; border-color: #7b9952; background: #263c28; }
.node-index, .node-detail { color: #a3b2a5; font-size: 0.57rem; font-weight: 700; letter-spacing: 0.12em; }
.visual-node strong { color: #fffef9; font-family: var(--font-display); font-size: clamp(0.85rem, 1.5vw, 1.15rem); line-height: 1.25; }
.visual-node--system strong { color: var(--lime); }
.visual-outcome {
  position: absolute;
  bottom: 8%;
  left: 8%;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: #d4dbd0;
  font-size: 0.7rem;
  font-weight: 600;
}
.visual-coordinate {
  position: absolute;
  right: 1.35rem;
  bottom: 1.15rem;
  color: #718278;
  font: 0.58rem/1.5 "Moduli Sans", sans-serif;
  letter-spacing: 0.08em;
  text-align: right;
}
.hero-scroll {
  position: absolute;
  right: max(1.5rem, calc((100vw - var(--container)) / 2));
  bottom: 1.4rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: #9eaca1;
  font-size: 0.66rem;
  text-decoration: none;
}
.scroll-line { width: 2rem; height: 1px; background: var(--lime); }

.intro {
  display: grid;
  grid-template-columns: 80px minmax(0, 1fr) 220px;
  gap: 2rem;
  align-items: start;
  padding-block: clamp(5rem, 9vw, 8rem);
}
.section-index { display: flex; align-items: center; gap: 0.75rem; color: #7b887f; font-size: 0.68rem; letter-spacing: 0.1em; }
.index-line { width: 2.2rem; height: 1px; background: #a9b2a5; }
.intro-copy { max-width: 760px; }
.intro h2, .section-heading h2, .about-copy h2, .principles-layout h2, .contact-copy h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.15rem, 4.3vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.05em;
  line-height: 1.12;
  text-wrap: balance;
}
.intro-copy > p:last-child, .section-heading > p {
  max-width: 650px;
  margin: 1.35rem 0 0;
  color: var(--ink-muted);
  line-height: 1.85;
}
.intro-note {
  align-self: end;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-top: 1rem;
  color: #536259;
  font-size: 0.62rem;
  letter-spacing: 0.14em;
  line-height: 1.5;
}
.intro-note img { filter: drop-shadow(0 8px 16px rgb(16 26 22 / 12%)); }
.intro-note b { color: var(--ink); font-size: 0.58rem; }