@font-face {
  font-family: "Archivo";
  src: url("assets/fonts/archivo-800.woff2") format("woff2");
  font-weight: 800;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Archivo";
  src: url("assets/fonts/archivo-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("assets/fonts/inter-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Inter";
  src: url("assets/fonts/inter-700.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}

:root {
  --black: #0b0b0b;
  --ink: #1d1d1f;
  --muted: #606067;
  --line: #d8d8dc;
  --paper: #f7f6f2;
  --white: #ffffff;
  --red: #e53935;
  --blue: #1768d4;
  --yellow: #ffd84d;
  --lavender: #cfc1ff;
  --green: #1c7c54;
  --shadow: 0 18px 48px rgba(15, 18, 23, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Inter", Arial, sans-serif;
  background:
    radial-gradient(circle at 1px 1px, rgba(11, 11, 11, 0.08) 1px, transparent 0) 0 0 / 24px 24px,
    var(--paper);
}

body::selection {
  background: var(--yellow);
  color: var(--black);
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  font: inherit;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: 16px;
  z-index: 20;
  padding: 10px 14px;
  background: var(--black);
  color: var(--white);
  transform: translateY(-150%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: grid;
  grid-template-columns: auto minmax(260px, 1fr) auto;
  column-gap: 28px;
  row-gap: 12px;
  align-items: center;
  min-height: 82px;
  padding: 14px 32px;
  border-bottom: 1px solid rgba(11, 11, 11, 0.14);
  background: rgba(247, 246, 242, 0.92);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}

.brand-logo {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  object-fit: contain;
}

.brand strong,
h1,
h2,
h3 {
  font-family: "Archivo", Arial, sans-serif;
  font-weight: 800;
  letter-spacing: 0;
}

.brand strong {
  display: block;
  font-size: 20px;
  line-height: 1;
}

.brand small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.2;
}

.nav-links {
  display: flex;
  gap: 18px;
  align-items: center;
  color: #333338;
  font-size: 15px;
  min-width: 0;
}

.nav-links a {
  white-space: nowrap;
}

.nav-links a,
.header-cta,
.primary-button,
.secondary-button,
.copy-button,
.step-button,
.mode-tab {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
}

.nav-links a:hover {
  color: var(--red);
}

.language-switcher {
  display: inline-flex;
  border: 2px solid var(--black);
  background: var(--white);
}

.language-button {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  padding: 0 13px;
  border: 0;
  border-right: 1px solid var(--line);
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  font-size: 12px;
  font-weight: 800;
}

.language-button:last-child {
  border-right: 0;
}

.language-button.is-active {
  background: var(--red);
  color: var(--white);
}

.header-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  min-width: max-content;
}

.header-cta,
.primary-button {
  border: 2px solid var(--black);
  background: var(--black);
  color: var(--white);
  padding: 10px 16px;
  font-weight: 700;
}

.header-cta:hover,
.primary-button:hover {
  background: var(--red);
  border-color: var(--red);
}

.secondary-button,
.copy-button {
  border: 2px solid var(--black);
  background: rgba(255, 255, 255, 0.8);
  color: var(--black);
  padding: 10px 16px;
  font-weight: 700;
}

.secondary-button:hover,
.copy-button:hover {
  background: var(--yellow);
}

.hero {
  position: relative;
  min-height: 690px;
  overflow: hidden;
  border-bottom: 2px solid var(--black);
  background: var(--white);
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.98) 0%, rgba(255, 255, 255, 0.94) 40%, rgba(255, 255, 255, 0.68) 63%, rgba(255, 255, 255, 0.16) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.48) 0%, rgba(255, 255, 255, 0) 42%);
  pointer-events: none;
}

.hero-image {
  position: absolute;
  inset: 0;
  z-index: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 56% center;
}

.hero-copy {
  position: relative;
  z-index: 2;
  width: min(700px, calc(100% - 48px));
  padding: 78px 0 58px 40px;
}

.eyebrow,
.section-kicker,
.panel-index,
.application-label {
  margin: 0 0 18px;
  color: var(--red);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 700px;
  margin: 0;
  color: var(--black);
  font-size: 68px;
  line-height: 0.98;
  text-wrap: balance;
}

.hero-lead {
  max-width: 570px;
  margin: 28px 0 0;
  color: #19191d;
  font-size: 20px;
  line-height: 1.48;
}

.hero-actions,
.offer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  width: min(760px, calc(100vw - 80px));
  margin: 72px 0 0;
  border: 2px solid var(--black);
  background: rgba(255, 255, 255, 0.94);
}

.hero-proof article {
  padding: 18px;
  border-right: 1px solid var(--line);
}

.hero-proof article:last-child {
  border-right: 0;
}

.proof-label {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
}

.proof-value {
  margin: 0;
  color: var(--black);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
}

.signal-band {
  padding: 20px 40px;
  border-bottom: 2px solid var(--black);
  background: var(--black);
  color: var(--white);
}

.signal-band p {
  width: min(1180px, 100%);
  margin: 0 auto;
  font-size: 18px;
  line-height: 1.45;
}

.section {
  width: min(1220px, calc(100% - 80px));
  margin: 0 auto;
  padding: 92px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 48px 64px;
}

.section-intro h2,
.blueprint-header h2,
.model-grid h2,
.applications-header h2,
.standards-layout h2,
.offer-copy h2,
.definition-band h2 {
  margin: 0;
  color: var(--black);
  font-size: 48px;
  line-height: 1;
}

.section-intro p,
.blueprint-header p,
.model-grid p,
.standards-layout p,
.offer-copy p,
.definition-band p {
  max-width: 760px;
  margin: 22px 0 0;
  color: #3c3c41;
  font-size: 19px;
  line-height: 1.55;
}

.shift-board {
  grid-column: 2;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.shift-board article,
.standards-list article,
.offer-modules article {
  border: 2px solid var(--black);
  background: var(--white);
  box-shadow: var(--shadow);
}

.shift-board article {
  min-height: 285px;
  padding: 22px;
}

.board-label {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 10px;
  border: 2px solid var(--black);
  color: var(--black);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.board-label.red {
  background: #ffdad8;
}

.board-label.blue {
  background: #d8e8ff;
}

.board-label.yellow {
  background: var(--yellow);
}

.shift-board h3,
.standards-list h3,
.offer-modules h3,
.application-panel h3,
.blueprint-panel h3 {
  margin: 24px 0 12px;
  color: var(--black);
  font-size: 25px;
  line-height: 1.08;
}

.shift-board p,
.standards-list p,
.offer-modules p,
.application-panel p,
.blueprint-panel p,
.panel-list,
.application-panel ul {
  margin: 0;
  color: #424247;
  font-size: 16px;
  line-height: 1.52;
}

.definition-band {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 54px;
  align-items: start;
  padding: 72px 40px;
  border-top: 2px solid var(--black);
  border-bottom: 2px solid var(--black);
  background:
    linear-gradient(90deg, rgba(255, 216, 77, 0.72) 0 12px, transparent 12px),
    var(--white);
}

.definition-band p {
  margin-top: 0;
}

.blueprint-section {
  padding-bottom: 62px;
}

.blueprint-header,
.applications-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 36px;
}

.blueprint-workbench {
  display: grid;
  grid-template-columns: 360px 1fr;
  border: 2px solid var(--black);
  background: var(--white);
  box-shadow: var(--shadow);
}

.step-rail {
  display: flex;
  flex-direction: column;
  border-right: 2px solid var(--black);
}

.step-button {
  justify-content: flex-start;
  gap: 14px;
  width: 100%;
  min-height: 78px;
  padding: 16px 18px;
  border: 0;
  border-bottom: 1px solid var(--line);
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  font-weight: 700;
  text-align: left;
}

.step-button:last-child {
  border-bottom: 0;
}

.step-button span {
  display: inline-flex;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--black);
  background: var(--paper);
  font-size: 13px;
}

.step-button.is-active {
  background: var(--yellow);
}

.blueprint-panel {
  position: relative;
  min-height: 560px;
  padding: 44px;
  overflow: hidden;
  background:
    linear-gradient(rgba(11, 11, 11, 0.05) 1px, transparent 1px) 0 0 / 38px 38px,
    linear-gradient(90deg, rgba(11, 11, 11, 0.05) 1px, transparent 1px) 0 0 / 38px 38px,
    var(--white);
}

.decision-map {
  position: relative;
  height: 230px;
  max-width: 820px;
  margin: 0 0 26px;
}

.node {
  position: absolute;
  z-index: 2;
  display: inline-flex;
  width: 136px;
  min-height: 64px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--black);
  background: var(--white);
  color: var(--black);
  font-size: 21px;
  font-weight: 800;
}

.node.human {
  left: 4%;
  top: 44px;
  background: #ffe2e1;
}

.node.ai {
  left: 46%;
  top: 82px;
  transform: translateX(-50%);
  background: #dfebff;
}

.node.proof {
  right: 5%;
  top: 36px;
  background: #e9e1ff;
}

.node.decision {
  right: 22%;
  bottom: 18px;
  background: var(--yellow);
}

.map-connections {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.map-connections line {
  stroke: var(--black);
  stroke-width: 3;
  stroke-linecap: square;
  vector-effect: non-scaling-stroke;
}

.blueprint-panel h3 {
  margin-top: 0;
  font-size: 34px;
}

.panel-list,
.application-panel ul {
  margin-top: 20px;
  padding: 0;
  list-style: none;
}

.panel-list li,
.application-panel li {
  position: relative;
  padding: 12px 0 12px 28px;
  border-top: 1px solid var(--line);
}

.panel-list li::before,
.application-panel li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 19px;
  width: 11px;
  height: 11px;
  background: var(--red);
}

.model-section {
  padding-top: 38px;
}

.model-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 58px;
  align-items: start;
}

.role-table {
  border: 2px solid var(--black);
  background: var(--white);
}

.role-table div {
  display: grid;
  grid-template-columns: 170px 1fr;
  min-height: 108px;
  border-bottom: 1px solid var(--line);
}

.role-table div:last-child {
  border-bottom: 0;
}

.role-table strong,
.role-table span {
  padding: 22px;
}

.role-table strong {
  border-right: 1px solid var(--line);
  color: var(--black);
}

.role-table span {
  color: #434348;
  line-height: 1.5;
}

.applications-section {
  border-top: 2px solid var(--black);
}

.mode-tabs {
  display: flex;
  gap: 0;
  border: 2px solid var(--black);
  background: var(--white);
}

.mode-tab {
  min-width: 110px;
  border: 0;
  border-right: 1px solid var(--line);
  background: var(--white);
  color: var(--black);
  cursor: pointer;
  font-weight: 800;
}

.mode-tab:last-child {
  border-right: 0;
}

.mode-tab.is-active {
  background: var(--blue);
  color: var(--white);
}

.application-panel {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 30px 54px;
  padding: 44px;
  border: 2px solid var(--black);
  background:
    linear-gradient(90deg, transparent 0 70%, rgba(255, 216, 77, 0.35) 70% 100%),
    var(--white);
  box-shadow: var(--shadow);
}

.application-label {
  grid-row: span 3;
  color: var(--blue);
}

.application-panel h3 {
  margin-top: 0;
  font-size: 34px;
}

.standards-section {
  width: 100%;
  padding: 92px 40px;
  border-top: 2px solid var(--black);
  border-bottom: 2px solid var(--black);
  background: var(--black);
  color: var(--white);
}

.standards-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  width: min(1220px, 100%);
  margin: 0 auto;
}

.standards-layout h2,
.standards-layout p {
  color: var(--white);
}

.standards-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.standards-list article {
  padding: 22px;
  box-shadow: none;
}

.standards-list article:nth-child(5) {
  grid-column: 1 / -1;
}

.standards-list span,
.offer-modules span {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--black);
  background: var(--yellow);
  color: var(--black);
  font-weight: 800;
}

.offer-section {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 42px 58px;
}

.offer-copy {
  position: sticky;
  top: 118px;
  align-self: start;
}

.offer-modules {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.offer-modules article {
  min-height: 225px;
  padding: 22px;
}

.offer-actions {
  grid-column: 2;
  margin-top: 0;
}

.source-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 30px 40px;
  border-top: 2px solid var(--black);
  border-bottom: 2px solid var(--black);
  background: var(--yellow);
}

.source-strip p {
  width: min(860px, 100%);
  margin: 0;
  color: var(--black);
  font-weight: 800;
  line-height: 1.4;
}

.source-strip img {
  width: 150px;
  height: auto;
}

.download-section {
  padding: 86px 40px;
  border-bottom: 2px solid var(--black);
  background:
    radial-gradient(circle at 1px 1px, rgba(11, 11, 11, 0.12) 1px, transparent 0) 0 0 / 28px 28px,
    var(--white);
  text-align: center;
}

.download-section h2 {
  max-width: 740px;
  margin: 0 auto 34px;
  color: var(--black);
  font-size: 44px;
  line-height: 1;
}

.download-actions {
  display: grid;
  gap: 18px;
  width: min(520px, 100%);
  margin: 0 auto;
}

.download-button {
  display: inline-flex;
  min-height: 80px;
  align-items: center;
  justify-content: center;
  padding: 18px 24px;
  border: 2px solid var(--red);
  border-radius: 8px;
  background: var(--red);
  color: var(--white);
  font-size: 26px;
  font-weight: 700;
  line-height: 1.1;
}

.download-button:hover {
  border-color: var(--black);
  background: var(--black);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px 40px;
  background: var(--paper);
  color: var(--muted);
}

.site-footer p {
  margin: 0;
}

.site-footer a {
  color: var(--black);
  font-weight: 800;
}

:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

@media (max-width: 1180px) {
  .site-header {
    grid-template-columns: 1fr auto;
    column-gap: 18px;
    row-gap: 14px;
    padding: 12px 22px;
  }

  .brand-logo {
    width: 42px;
    height: 42px;
    flex-basis: 42px;
  }

  .nav-links {
    grid-column: 1 / -1;
    order: 3;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .nav-links::-webkit-scrollbar {
    display: none;
  }

  .header-actions {
    justify-self: end;
  }

  .header-cta {
    white-space: nowrap;
  }

  .hero {
    min-height: 620px;
  }

  .hero-copy {
    width: min(620px, calc(100% - 48px));
    padding-top: 58px;
    padding-left: 24px;
  }

  .hero h1 {
    font-size: 48px;
    line-height: 1.02;
  }

  .hero-lead {
    font-size: 19px;
  }

  .hero-proof {
    width: min(660px, calc(100vw - 48px));
    grid-template-columns: 1fr;
  }

  .hero-proof article {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .hero-proof article:last-child {
    border-bottom: 0;
  }

  .section,
  .standards-section {
    width: min(100% - 44px, 1220px);
    padding: 72px 0;
  }

  .standards-section {
    width: 100%;
    padding-left: 22px;
    padding-right: 22px;
  }

  .section-grid,
  .definition-band,
  .blueprint-workbench,
  .model-grid,
  .standards-layout,
  .offer-section {
    grid-template-columns: 1fr;
  }

  .shift-board {
    grid-column: auto;
    grid-template-columns: 1fr;
  }

  .blueprint-header,
  .applications-header {
    align-items: start;
    flex-direction: column;
  }

  .step-rail {
    border-right: 0;
    border-bottom: 2px solid var(--black);
  }

  .application-panel {
    grid-template-columns: 1fr;
  }

  .application-label {
    grid-row: auto;
  }

  .offer-copy {
    position: static;
  }

  .offer-actions {
    grid-column: auto;
  }
}

@media (max-width: 680px) {
  .site-header,
  .signal-band,
  .source-strip,
  .site-footer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .header-cta {
    display: none;
  }

  .site-header {
    grid-template-columns: 1fr;
    row-gap: 10px;
    min-height: 0;
    padding-top: 12px;
    padding-bottom: 12px;
  }

  .brand {
    gap: 10px;
  }

  .brand-logo {
    width: 38px;
    height: 38px;
    flex-basis: 38px;
  }

  .brand strong {
    font-size: 18px;
  }

  .brand small {
    font-size: 12px;
  }

  .nav-links {
    width: 100%;
    gap: 10px;
    font-size: 14px;
  }

  .header-actions {
    grid-column: auto;
    width: 100%;
    justify-content: stretch;
  }

  .language-switcher {
    width: 100%;
  }

  .language-button {
    flex: 1;
    min-height: 38px;
  }

  .hero {
    min-height: 620px;
  }

  .hero::after {
    background:
      linear-gradient(90deg, rgba(255, 255, 255, 0.99) 0%, rgba(255, 255, 255, 0.96) 72%, rgba(255, 255, 255, 0.56) 100%),
      linear-gradient(180deg, rgba(255, 255, 255, 0.72) 0%, rgba(255, 255, 255, 0.18) 100%);
  }

  .hero-image {
    object-position: 64% center;
    opacity: 0.78;
  }

  .hero-copy {
    width: calc(100% - 32px);
    padding: 42px 0 34px 16px;
  }

  .hero h1 {
    font-size: 34px;
    line-height: 1.04;
  }

  .hero-lead {
    font-size: 17px;
    line-height: 1.4;
    max-width: 100%;
  }

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

  .primary-button,
  .secondary-button,
  .copy-button {
    width: 100%;
  }

  .section-intro h2,
  .blueprint-header h2,
  .model-grid h2,
  .applications-header h2,
  .standards-layout h2,
  .offer-copy h2,
  .definition-band h2 {
    font-size: 34px;
  }

  .definition-band {
    padding: 52px 16px;
  }

  .blueprint-panel {
    min-height: 0;
    padding: 24px;
  }

  .decision-map {
    height: 210px;
  }

  .node {
    width: 100px;
    min-height: 54px;
    font-size: 14px;
  }

  .node.human {
    left: 0;
  }

  .node.ai {
    left: 46%;
  }

  .node.proof {
    right: 0;
  }

  .node.decision {
    right: 12%;
  }

  .blueprint-panel h3,
  .application-panel h3 {
    font-size: 28px;
  }

  .applications-header .mode-tabs {
    width: 100%;
  }

  .mode-tab {
    flex: 1;
    min-width: 0;
  }

  .application-panel {
    padding: 24px;
  }

  .standards-list,
  .offer-modules {
    grid-template-columns: 1fr;
  }

  .standards-list article:nth-child(5) {
    grid-column: auto;
  }

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

  .download-section {
    padding: 58px 16px;
  }

  .download-section h2 {
    font-size: 34px;
  }

  .download-button {
    min-height: 68px;
    font-size: 22px;
  }
}