.hero {
  min-height: calc(100svh - var(--header-h));
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(420px, 1.08fr);
  align-items: center;
  gap: 32px;
  padding-block: 62px 72px;
}
.hero-copy { max-width: 650px; }
.hero h1 {
  margin: 14px 0 18px;
  font-size: clamp(3.2rem, 7vw, 6.4rem);
  line-height: .88;
  letter-spacing: -.07em;
  max-width: 760px;
}
.hero-lead { margin: 0; max-width: 650px; color: var(--muted); font-size: clamp(1.02rem, 1.5vw, 1.18rem); }
.hero-equation {
  width: fit-content;
  max-width: 100%;
  margin-top: 28px;
  padding: 12px 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--panel) 85%, transparent);
  color: var(--accent);
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: .88rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.hero-stats { display: flex; gap: 18px; flex-wrap: wrap; margin: 38px 0 0; }
.hero-stats div { min-width: 128px; padding-right: 18px; border-right: 1px solid var(--line); }
.hero-stats div:last-child { border-right: 0; }
.hero-stats dt { font-size: 1.7rem; line-height: 1; font-weight: 780; letter-spacing: -.04em; }
.hero-stats dd { margin: 6px 0 0; color: var(--muted); font-size: .74rem; }

.hero-visual {
  position: relative;
  min-height: 560px;
  display: grid;
  place-items: center;
  border-radius: 36px;
  border: 1px solid var(--line);
  background:
    linear-gradient(140deg, color-mix(in srgb, var(--accent) 8%, transparent), transparent 40%),
    linear-gradient(330deg, color-mix(in srgb, var(--accent-2) 10%, transparent), transparent 42%),
    color-mix(in srgb, var(--panel-solid) 82%, transparent);
  box-shadow: var(--shadow);
  overflow: hidden;
}
.hero-visual::before {
  content: "";
  position: absolute;
  inset: 10%;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 8%, transparent), transparent 65%);
  filter: blur(28px);
}
.hero-wave { width: min(100%, 700px); color: var(--accent); }
.grid-lines path { stroke: var(--line-strong); stroke-width: 1; }
.wave-line { fill: none; stroke: url(#waveFade); stroke-width: 3; }
.wave-line.thin { stroke-width: 1.4; opacity: .55; }
.wave-glow { fill: none; stroke: currentColor; stroke-width: 18; opacity: .12; filter: url(#softGlow); }
.wave-b { color: var(--accent-2); }
.field-vectors { fill: none; stroke: var(--accent-3); stroke-width: 1.6; opacity: .82; }
.node { fill: var(--bg); stroke: var(--accent); stroke-width: 2; }
.node-glow { fill: url(#nodeGlow); }
.visual-labels { fill: var(--muted); font: 650 11px/1 system-ui, sans-serif; letter-spacing: .16em; }

.system-section, .method-section, .roadmap-section { padding-block: 96px; }
.system-flow {
  display: grid;
  grid-template-columns: repeat(9, auto);
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.system-flow > div { min-width: 128px; display: grid; gap: 3px; }
.system-flow > div span { color: var(--accent); font-size: .68rem; font-weight: 800; letter-spacing: .1em; }
.system-flow strong { font-size: .9rem; }
.system-flow small { color: var(--muted); font-size: .72rem; }
.system-flow i { color: var(--muted); font-style: normal; }
.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-top: 14px; }
.principle-card {
  min-height: 230px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--panel) 78%, transparent);
}
.card-index { color: var(--accent); font: 800 .72rem/1 monospace; }
.principle-card h3 { margin: 54px 0 8px; font-size: 1.2rem; }
.principle-card p { margin: 0; color: var(--muted); font-size: .9rem; }

.modules-section {
  padding-block: 96px;
  border-block: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-elevated) 64%, transparent);
}
.split-heading { max-width: none; display: grid; grid-template-columns: 1.05fr .95fr; gap: 54px; align-items: end; }
.split-heading p { padding-bottom: 7px; }
.module-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.module-card {
  min-height: 250px;
  position: relative;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  overflow: hidden;
}
.module-card::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  right: -82px;
  bottom: -92px;
  border-radius: 50%;
  background: currentColor;
  opacity: .055;
}
.module-card.core { color: var(--accent); }
.module-card.domain { color: var(--accent-3); }
.module-card.field { color: var(--accent-2); }
.module-card.radiation { color: var(--warm); }
.module-top { display: flex; justify-content: space-between; align-items: center; font: 800 .72rem/1 monospace; letter-spacing: .06em; }
.module-tag { padding: 6px 8px; border: 1px solid currentColor; border-radius: 999px; opacity: .72; }
.module-card h3 { margin: 48px 0 8px; color: var(--text); font-size: clamp(1.35rem, 2vw, 1.85rem); letter-spacing: -.03em; }
.module-card p { max-width: 540px; margin: 0; color: var(--muted); font-size: .9rem; }
.module-equation { position: absolute; right: 24px; bottom: 20px; color: currentColor; font: 650 .78rem/1.2 "SFMono-Regular", Consolas, monospace; }

.method-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.method-grid article {
  min-height: 210px;
  padding: 22px;
  border-top: 1px solid var(--line-strong);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 75%, transparent), transparent);
}
.method-grid span { color: var(--accent); font: 800 .72rem/1 monospace; }
.method-grid h3 { margin: 62px 0 6px; font-size: 1.12rem; }
.method-grid p { margin: 0; color: var(--muted); font-size: .84rem; }

.roadmap-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 38px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent-2) 8%, transparent), transparent 42%),
    var(--panel);
}
.roadmap-panel h2 { margin: 10px 0 12px; font-size: clamp(2rem, 4vw, 3rem); line-height: 1; letter-spacing: -.04em; }
.roadmap-panel p { margin: 0; color: var(--muted); }
.branch-list { display: grid; gap: 8px; align-content: center; }
.branch-list span { padding: 14px 16px; border: 1px solid var(--line); border-radius: 12px; background: color-mix(in srgb, var(--panel-solid) 82%, transparent); font-size: .86rem; font-weight: 680; }

@media (max-width: 1020px) {
  .hero { grid-template-columns: 1fr; min-height: auto; padding-top: 52px; }
  .hero-copy { max-width: 780px; }
  .hero-visual { min-height: 460px; }
  .system-flow { grid-template-columns: repeat(5, 1fr); }
  .system-flow i { display: none; }
  .method-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 760px) {
  .hero { padding-block: 40px 56px; gap: 26px; }
  .hero h1 { font-size: clamp(3rem, 16vw, 5.4rem); }
  .hero-visual { min-height: 350px; border-radius: 24px; }
  .system-section, .modules-section, .method-section, .roadmap-section { padding-block: 72px; }
  .system-flow { grid-template-columns: 1fr 1fr; }
  .system-flow > div:last-of-type { grid-column: 1 / -1; }
  .principles-grid, .module-grid, .split-heading, .roadmap-panel { grid-template-columns: 1fr; }
  .split-heading { gap: 10px; }
  .module-card { min-height: 230px; }
  .roadmap-panel { gap: 26px; padding: 24px; }
}

@media (max-width: 520px) {
  .hero h1 { font-size: clamp(3rem, 18vw, 4.6rem); }
  .hero-stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
  .hero-stats div { min-width: 0; border-right: 0; padding-right: 0; }
  .hero-stats div:last-child { grid-column: 1 / -1; }
  .hero-visual { min-height: 290px; }
  .hero-wave { width: 122%; max-width: none; }
  .system-flow { grid-template-columns: 1fr; }
  .system-flow > div:last-of-type { grid-column: auto; }
  .method-grid { grid-template-columns: 1fr; }
  .method-grid article { min-height: 180px; }
  .method-grid h3 { margin-top: 44px; }
  .module-equation { position: static; margin-top: 22px; }
}