:root {
  --ink: #111313;
  --muted: #5a6161;
  --paper: #fbfcf8;
  --soft: #eef3ea;
  --line: rgba(17, 19, 19, 0.14);
  --signal: #19a974;
  --signal-dark: #087a55;
  --sun: #f3c744;
  --coral: #ef6f5e;
  --white: #ffffff;
  --shadow: 0 24px 80px rgba(17, 19, 19, 0.12);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

body.nav-open {
  overflow: hidden;
}

a {
  color: inherit;
  text-decoration: none;
}

p,
h1,
h2,
h3 {
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 18px;
  left: 50%;
  display: flex;
  width: min(calc(100% - 32px), var(--max));
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 12px 14px 12px 12px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 999px;
  background: rgba(251, 252, 248, 0.82);
  box-shadow: 0 14px 40px rgba(17, 19, 19, 0.08);
  backdrop-filter: blur(18px);
  transform: translateX(-50%);
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.site-header.is-scrolled {
  border-color: var(--line);
  background: rgba(251, 252, 248, 0.94);
  box-shadow: 0 18px 60px rgba(17, 19, 19, 0.12);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.78rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav a {
  border-radius: 999px;
  padding: 10px 14px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 700;
  transition: background 160ms ease, color 160ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav a.active {
  background: var(--soft);
  color: var(--ink);
}

.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--white);
  cursor: pointer;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 17px;
  height: 2px;
  margin: 4px auto;
  border-radius: 999px;
  background: var(--ink);
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 140px 24px 92px;
  isolation: isolate;
}

.hero::after {
  position: absolute;
  inset: auto 0 0;
  height: 32%;
  background: linear-gradient(to top, var(--paper), rgba(251, 252, 248, 0));
  content: "";
  pointer-events: none;
  z-index: -1;
}

.hero-scene {
  position: absolute;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 18% 24%, rgba(25, 169, 116, 0.2), transparent 26%),
    radial-gradient(circle at 82% 22%, rgba(243, 199, 68, 0.2), transparent 24%),
    linear-gradient(135deg, #f8fbf4 0%, #ffffff 48%, #edf5ee 100%);
}

.duet-orbit {
  position: absolute;
  inset: 8% 0 auto;
  left: 50%;
  width: min(920px, 88vw);
  aspect-ratio: 1.35;
  transform: translateX(-50%);
}

.orbit-ring {
  position: absolute;
  inset: 12%;
  border: 1px solid rgba(17, 19, 19, 0.12);
  border-radius: 50%;
}

.ring-one {
  transform: rotate(-8deg) scaleX(1.08);
}

.ring-two {
  inset: 20% 18%;
  transform: rotate(15deg) scaleX(1.18);
}

.pulse {
  position: absolute;
  border-radius: 50%;
  filter: blur(2px);
  opacity: 0.62;
}

.pulse-one {
  top: 22%;
  left: 11%;
  width: 220px;
  height: 220px;
  background: rgba(25, 169, 116, 0.16);
}

.pulse-two {
  right: 9%;
  bottom: 20%;
  width: 260px;
  height: 260px;
  background: rgba(239, 111, 94, 0.13);
}

.node {
  position: absolute;
  display: none;
  width: clamp(132px, 16vw, 190px);
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.72);
  border-radius: 50%;
  box-shadow: var(--shadow);
  font-weight: 800;
}

.node span {
  display: grid;
  width: 72%;
  aspect-ratio: 1;
  place-items: center;
  border-radius: 50%;
}

.human-node {
  top: 22%;
  left: 17%;
  background: rgba(255, 255, 255, 0.78);
}

.human-node span {
  background: var(--ink);
  color: var(--paper);
}

.ai-node {
  top: 14%;
  right: 17%;
  background: rgba(255, 255, 255, 0.78);
}

.ai-node span {
  background: var(--signal);
  color: var(--white);
}

.bridge {
  position: absolute;
  display: none;
  top: 34%;
  left: 32%;
  width: 36%;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(17, 19, 19, 0.54), transparent);
  transform-origin: center;
}

.bridge-one {
  transform: rotate(-8deg);
}

.bridge-two {
  transform: rotate(8deg) translateY(34px);
}

.signal-card {
  position: absolute;
  width: 180px;
  padding: 16px;
  border: 1px solid rgba(255, 255, 255, 0.75);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 18px 50px rgba(17, 19, 19, 0.1);
  backdrop-filter: blur(12px);
}

.signal-card strong,
.signal-card span {
  display: block;
}

.signal-card strong {
  margin-bottom: 6px;
  font-size: 0.92rem;
}

.signal-card span {
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.35;
}

.card-one {
  top: 8%;
  left: 43%;
}

.card-two {
  display: none;
  right: 8%;
  bottom: 30%;
}

.card-three {
  display: none;
  bottom: 30%;
  left: 8%;
}

.hero-content {
  position: relative;
  z-index: 1;
  width: min(920px, 100%);
  margin-top: 62px;
  text-align: center;
}

.hero-content::before {
  position: absolute;
  inset: 64px -72px -28px;
  z-index: -1;
  background: radial-gradient(ellipse at center, rgba(251, 252, 248, 0.96) 0%, rgba(251, 252, 248, 0.9) 48%, rgba(251, 252, 248, 0) 72%);
  content: "";
  pointer-events: none;
}

.eyebrow,
.section-kicker {
  color: var(--signal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1 {
  margin-top: 18px;
  font-size: clamp(4.5rem, 12vw, 10rem);
  font-weight: 800;
  line-height: 0.86;
}

.hero-copy {
  max-width: 790px;
  margin: 28px auto 0;
  color: #343939;
  font-size: clamp(1.06rem, 1.8vw, 1.35rem);
  line-height: 1.55;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 800;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: var(--ink);
  color: var(--white);
  box-shadow: 0 14px 32px rgba(17, 19, 19, 0.18);
}

.button-secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
}

.section {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 100px 0;
}

.intro-band {
  width: 100%;
  max-width: none;
  padding: 100px max(20px, calc((100vw - var(--max)) / 2));
  background: var(--ink);
  color: var(--paper);
}

.split,
.section-heading,
.thesis-section,
.studio {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 92px);
  align-items: start;
}

.intro-band .section-kicker {
  color: var(--sun);
  margin-bottom: 16px;
}

h2 {
  font-size: clamp(2.3rem, 5vw, 5rem);
  font-weight: 800;
  line-height: 0.95;
}

.intro-copy {
  display: grid;
  gap: 24px;
  color: rgba(251, 252, 248, 0.76);
  font-size: clamp(1.02rem, 1.5vw, 1.22rem);
  line-height: 1.7;
}

.section-heading {
  margin-bottom: 42px;
}

.section-heading .section-kicker {
  margin-bottom: 16px;
}

.section-heading > p {
  max-width: 560px;
  align-self: end;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.product-card {
  min-height: 390px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.4);
}

.product-card-featured {
  background: var(--ink);
  color: var(--paper);
}

.product-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 42px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.product-card-featured .product-topline {
  color: rgba(251, 252, 248, 0.62);
}

.product-index {
  color: var(--signal-dark);
}

.product-card-featured .product-index {
  color: var(--sun);
}

.product-status {
  text-align: right;
}

.product-card h3 {
  font-size: 2rem;
  line-height: 1;
}

.product-card p {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.62;
}

.product-card-featured p {
  color: rgba(251, 252, 248, 0.74);
}

.product-card a {
  width: fit-content;
  margin-top: auto;
  border-bottom: 2px solid currentColor;
  padding-bottom: 4px;
  font-weight: 800;
}

.thesis-section {
  align-items: stretch;
}

.thesis-panel {
  padding: 46px;
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.thesis-panel .section-kicker {
  margin-bottom: 18px;
}

.thesis-panel p {
  margin-top: 26px;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.72;
}

.thesis-steps {
  display: grid;
  gap: 14px;
}

.thesis-steps div {
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.48);
}

.thesis-steps span {
  color: var(--signal-dark);
  font-size: 0.78rem;
  font-weight: 800;
}

.thesis-steps strong {
  display: block;
  margin-top: 12px;
  font-size: 1.4rem;
}

.thesis-steps p {
  margin-top: 8px;
  color: var(--muted);
  line-height: 1.6;
}

.principle-list {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.principle {
  min-height: 230px;
  padding: 26px;
  background: var(--paper);
}

.principle span {
  display: block;
  font-size: 1.25rem;
  font-weight: 800;
}

.principle p {
  margin-top: 16px;
  color: var(--muted);
  line-height: 1.62;
}

.studio {
  align-items: center;
  border-top: 1px solid var(--line);
}

.studio .section-kicker {
  margin-bottom: 16px;
}

.studio p {
  color: var(--muted);
  font-size: 1.1rem;
  line-height: 1.75;
}

.site-footer {
  display: flex;
  width: min(calc(100% - 40px), var(--max));
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin: 0 auto;
  padding: 32px 0 46px;
  border-top: 1px solid var(--line);
  color: var(--muted);
}

.site-footer strong,
.site-footer span {
  display: block;
}

.site-footer strong {
  color: var(--ink);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 16px;
}

.site-footer a {
  font-weight: 700;
}

.page-hero,
.product-hero {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 180px 0 84px;
}

.page-hero {
  min-height: 68vh;
  display: grid;
  align-content: end;
  border-bottom: 1px solid var(--line);
}

.page-hero h1,
.product-hero h1 {
  max-width: 980px;
  margin-top: 18px;
  font-size: clamp(3.4rem, 9vw, 8rem);
  font-weight: 800;
  line-height: 0.9;
}

.page-hero p:last-child,
.product-hero > p:not(.eyebrow) {
  max-width: 760px;
  margin-top: 26px;
  color: #3f4646;
  font-size: clamp(1.06rem, 1.7vw, 1.28rem);
  line-height: 1.62;
}

.page-section {
  width: min(calc(100% - 40px), var(--max));
  margin: 0 auto;
  padding: 92px 0;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(32px, 6vw, 92px);
  align-items: start;
}

.two-column .section-kicker {
  margin-bottom: 16px;
}

.rich-copy {
  display: grid;
  gap: 22px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.72;
}

.value-grid,
.principle-cards,
.product-detail,
.roadmap-grid {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.value-grid,
.product-detail {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.product-detail {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.principle-cards {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.value-grid article,
.principle-cards article,
.product-detail article,
.roadmap-grid article {
  min-height: 250px;
  padding: 30px;
  background: var(--paper);
}

.value-grid span,
.principle-cards span,
.product-detail span {
  color: var(--signal-dark);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.value-grid h3,
.principle-cards h2,
.product-detail h2 {
  margin-top: 18px;
  font-size: clamp(1.8rem, 3.4vw, 3.2rem);
  line-height: 1;
}

.value-grid p,
.principle-cards p,
.product-detail p,
.roadmap-grid span {
  display: block;
  margin-top: 16px;
  color: var(--muted);
  line-height: 1.64;
}

.offering-list {
  display: grid;
  gap: 14px;
}

.offering-list article {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 24px;
  align-items: center;
  padding: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.5);
}

.offering-list span {
  color: var(--signal-dark);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.offering-list h2 {
  margin-top: 10px;
  font-size: clamp(2rem, 4vw, 4.2rem);
}

.offering-list p {
  max-width: 720px;
  margin-top: 14px;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.62;
}

.product-hero {
  min-height: 80vh;
  display: grid;
  align-content: end;
  position: relative;
  overflow: hidden;
  border-radius: 0 0 8px 8px;
  isolation: isolate;
}

.product-hero::before {
  position: absolute;
  inset: 84px 0 0;
  z-index: -1;
  border-radius: 8px;
  content: "";
}

.product-hero h1 {
  max-width: 900px;
}

.product-hero .hero-actions {
  justify-content: flex-start;
}

.apps-theme::before {
  background:
    radial-gradient(circle at 78% 24%, rgba(25, 169, 116, 0.22), transparent 24%),
    linear-gradient(135deg, #f6fbef, #ffffff);
}

.learning-theme::before {
  background:
    radial-gradient(circle at 74% 28%, rgba(243, 199, 68, 0.25), transparent 25%),
    linear-gradient(135deg, #fffaf0, #ffffff);
}

.staff-theme::before {
  background:
    radial-gradient(circle at 76% 25%, rgba(17, 19, 19, 0.14), transparent 24%),
    linear-gradient(135deg, #f4f7f4, #ffffff);
}

.coach-theme::before {
  background:
    radial-gradient(circle at 76% 26%, rgba(239, 111, 94, 0.22), transparent 24%),
    linear-gradient(135deg, #fff6f4, #ffffff);
}

.roadmap > .section-kicker {
  margin-bottom: 16px;
}

.roadmap-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 36px;
}

.roadmap-grid strong {
  display: block;
  font-size: 1.2rem;
}

@media (prefers-reduced-motion: no-preference) {
  .node,
  .signal-card,
  .pulse {
    animation: float 9s ease-in-out infinite;
  }

  .ai-node,
  .card-two {
    animation-delay: -3s;
  }

  .human-node,
  .card-three {
    animation-delay: -5s;
  }

  @keyframes float {
    0%,
    100% {
      translate: 0 0;
    }

    50% {
      translate: 0 -14px;
    }
  }
}

@media (max-width: 980px) {
  .product-grid,
  .principle-list,
  .value-grid,
  .roadmap-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .split,
  .section-heading,
  .thesis-section,
  .studio,
  .two-column {
    grid-template-columns: 1fr;
  }

  .section-heading > p {
    align-self: start;
  }

  .duet-orbit {
    width: min(760px, 120vw);
    opacity: 0.82;
  }
}

@media (max-width: 760px) {
  .site-header {
    top: 12px;
    width: min(calc(100% - 20px), var(--max));
  }

  .nav-toggle {
    display: block;
    position: relative;
    z-index: 22;
  }

  .site-nav {
    position: fixed;
    inset: 70px 10px auto;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 8px;
    background: rgba(251, 252, 248, 0.98);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 14px;
  }

  .hero {
    min-height: 92vh;
    padding: 128px 20px 70px;
  }

  .hero h1 {
    font-size: clamp(3.6rem, 18vw, 6.4rem);
  }

  .hero-copy {
    font-size: 1rem;
  }

  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .duet-orbit {
    inset: 9% auto auto 50%;
    width: 760px;
    opacity: 0.42;
  }

  .signal-card {
    display: none;
  }

  .section,
  .intro-band,
  .page-section {
    padding-top: 72px;
    padding-bottom: 72px;
  }

  .page-hero,
  .product-hero {
    width: min(calc(100% - 32px), var(--max));
    min-height: 68vh;
    padding-top: 140px;
    padding-bottom: 60px;
  }

  .page-hero h1,
  .product-hero h1 {
    font-size: clamp(3rem, 17vw, 5.2rem);
  }

  .product-grid,
  .principle-list,
  .value-grid,
  .principle-cards,
  .product-detail,
  .roadmap-grid {
    grid-template-columns: 1fr;
  }

  .offering-list article {
    grid-template-columns: 1fr;
  }

  .offering-list .button {
    width: 100%;
  }

  .product-card {
    min-height: 300px;
  }

  .thesis-panel {
    padding: 30px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-footer nav {
    justify-content: flex-start;
  }
}