:root {
  --paper: #f4f6f2;
  --white: #ffffff;
  --ink: #151a17;
  --muted: #5f6862;
  --line: #cfd6d0;
  --deep: #121714;
  --panel: #1f2924;
  --green: #0b7f5b;
  --green-soft: #dff5e9;
  --yellow: #f3cb67;
  --red: #cf554d;
  --blue: #2d6eaa;
  --max: 1240px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  margin: 0;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

a:focus-visible {
  outline: 3px solid var(--yellow);
  outline-offset: 4px;
}

.site-header {
  align-items: center;
  background: rgba(244, 246, 242, 0.96);
  border-bottom: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  min-height: 70px;
  padding: 10px max(24px, calc((100% - var(--max)) / 2));
  position: sticky;
  top: 0;
  z-index: 20;
}

.brand {
  align-items: center;
  display: inline-flex;
  font-weight: 800;
  gap: 10px;
  text-decoration: none;
}

.brand-mark {
  align-items: center;
  background: var(--deep);
  color: var(--white);
  display: inline-flex;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  height: 34px;
  justify-content: center;
  width: 34px;
}

nav {
  align-items: center;
  display: flex;
  gap: 26px;
}

nav a {
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.nav-action,
.primary-action,
.secondary-action {
  align-items: center;
  display: inline-flex;
  font-size: 13px;
  font-weight: 800;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  text-decoration: none;
}

.nav-action,
.primary-action {
  background: var(--deep);
  color: var(--white);
}

.secondary-action {
  border: 1px solid var(--ink);
}

.hero {
  align-items: center;
  background-color: rgba(12, 18, 15, 0.93);
  background-image: url("assets/airforge-proof.png");
  background-position: center;
  background-size: cover;
  background-blend-mode: multiply;
  color: var(--white);
  display: flex;
  min-height: min(710px, calc(100svh - 150px));
  padding: 72px max(24px, calc((100% - var(--max)) / 2));
}

.hero-copy {
  max-width: 790px;
}

.eyebrow {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-weight: 800;
  margin: 0 0 16px;
  text-transform: uppercase;
}

.hero .eyebrow,
.origin-band .eyebrow {
  color: #7de3b9;
}

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

h1 {
  font-size: 128px;
  font-weight: 850;
  letter-spacing: 0;
  line-height: 0.9;
  margin-bottom: 30px;
}

h2 {
  font-size: 62px;
  font-weight: 800;
  letter-spacing: 0;
  line-height: 1.02;
  margin-bottom: 22px;
}

h3 {
  font-size: 22px;
  letter-spacing: 0;
  line-height: 1.18;
}

.hero-lede {
  color: #eef3ef;
  font-size: 22px;
  line-height: 1.5;
  max-width: 760px;
}

.hero-actions,
.closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 32px 0 24px;
}

.hero .primary-action {
  background: var(--yellow);
  color: var(--ink);
}

.inverse {
  border-color: var(--white);
  color: var(--white);
}

.hero-note {
  border-left: 3px solid var(--red);
  color: #c7d0cb;
  font-size: 12px;
  margin-bottom: 0;
  padding-left: 14px;
}

.signal-strip {
  background: var(--yellow);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0 max(24px, calc((100% - var(--max)) / 2));
}

.signal-strip div {
  border-left: 1px solid rgba(21, 26, 23, 0.24);
  min-height: 92px;
  padding: 21px 20px;
}

.signal-strip div:last-child {
  border-right: 1px solid rgba(21, 26, 23, 0.24);
}

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

.signal-strip strong {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 14px;
}

.signal-strip span {
  font-size: 11px;
  margin-top: 5px;
}

.category-band,
.suite-band,
.method-band,
.origin-band,
.contact-band,
.closing-band {
  padding: 104px max(24px, calc((100% - var(--max)) / 2));
}

.category-band,
.method-band {
  background: var(--white);
}

.section-heading {
  max-width: 850px;
}

.section-heading > p:last-child {
  color: var(--muted);
  font-size: 17px;
  max-width: 760px;
}

.category-copy {
  display: grid;
  font-size: 18px;
  gap: 42px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-left: auto;
  max-width: 940px;
}

.category-copy p {
  color: var(--muted);
}

.acceptance-flow {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  list-style: none;
  margin: 64px 0 0;
  padding: 0;
}

.acceptance-flow li {
  border-left: 1px solid var(--line);
  min-height: 152px;
  padding: 18px;
}

.acceptance-flow li:last-child {
  border-right: 1px solid var(--line);
}

.acceptance-flow span,
.acceptance-flow strong,
.acceptance-flow small {
  display: block;
}

.acceptance-flow span {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
  margin-bottom: 28px;
}

.acceptance-flow strong {
  font-size: 18px;
}

.acceptance-flow small {
  color: var(--muted);
  margin-top: 5px;
}

.suite-band {
  background: #edf1ec;
}

.suite-heading {
  margin-bottom: 60px;
}

.product-feature {
  background: var(--deep);
  color: var(--white);
  display: grid;
  grid-template-columns: minmax(360px, 0.8fr) minmax(0, 1.2fr);
  margin-bottom: 28px;
  min-height: 520px;
}

.product-copy {
  padding: 42px;
}

.product-copy h3 {
  font-size: 48px;
  margin: 34px 0 18px;
}

.product-copy > p {
  color: #bdc8c2;
  font-size: 17px;
}

.status-line {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 10px;
  gap: 10px;
  text-transform: uppercase;
}

.status {
  border: 1px solid currentColor;
  padding: 4px 7px;
}

.validated,
.production {
  color: #7de3b9;
}

.active {
  color: var(--blue);
}

.research {
  color: #9b7350;
}

.feature-metrics {
  margin: 30px 0;
}

.feature-metrics div {
  border-top: 1px solid #445049;
  display: flex;
  justify-content: space-between;
  padding: 12px 0;
}

.feature-metrics dt {
  color: #aebbb4;
}

.feature-metrics dd {
  color: #7de3b9;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  margin: 0;
}

.text-action {
  color: var(--yellow);
  font-weight: 800;
}

.product-visual {
  align-items: center;
  background: #dce3dd;
  display: flex;
  min-width: 0;
  overflow: hidden;
}

.product-visual img {
  display: block;
  height: 100%;
  object-fit: cover;
  object-position: left center;
  transition: transform 180ms ease;
  width: 100%;
}

.product-visual:hover img {
  transform: scale(1.012);
}

.product-list {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
}

.product-list article {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  min-height: 300px;
  padding: 24px;
}

.product-list article:first-child {
  border-left: 1px solid var(--line);
}

.product-list h3 {
  font-size: 27px;
  margin: 42px 0 18px;
}

.product-list p {
  color: var(--muted);
  font-size: 13px;
}

.principle-grid {
  border-top: 1px solid var(--line);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 56px;
}

.principle-grid article {
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  min-height: 265px;
  padding: 24px;
}

.principle-grid article:first-child {
  border-left: 1px solid var(--line);
}

.principle-grid span {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 11px;
}

.principle-grid h3 {
  margin: 42px 0 14px;
}

.principle-grid p {
  color: var(--muted);
  font-size: 13px;
}

.origin-band {
  background: var(--panel);
  color: var(--white);
  display: grid;
  gap: 80px;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
}

.origin-copy {
  color: #c3cdc7;
  font-size: 18px;
}

.contact-band {
  background: var(--white);
  display: grid;
  gap: 80px;
  grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1.25fr);
}

.contact-copy > p:not(.eyebrow) {
  color: var(--muted);
  font-size: 17px;
}

.contact-copy ul {
  border-top: 1px solid var(--line);
  list-style: none;
  margin: 36px 0 0;
  padding: 0;
}

.contact-copy li {
  border-bottom: 1px solid var(--line);
  font-size: 13px;
  padding: 13px 0 13px 22px;
  position: relative;
}

.contact-copy li::before {
  color: var(--green);
  content: "+";
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 800;
  left: 0;
  position: absolute;
}

.contact-form {
  min-width: 0;
  position: relative;
}

.form-grid {
  display: grid;
  gap: 20px 22px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.field-wide {
  grid-column: 1 / -1;
}

.field label {
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 7px;
}

.field label span {
  color: var(--muted);
  font-weight: 500;
}

.field input,
.field select,
.field textarea {
  appearance: none;
  background: var(--paper);
  border: 1px solid #aeb8b1;
  border-radius: 2px;
  color: var(--ink);
  font: inherit;
  font-size: 15px;
  min-height: 48px;
  padding: 11px 12px;
  width: 100%;
}

.field select {
  background-image:
    linear-gradient(45deg, transparent 50%, var(--ink) 50%),
    linear-gradient(135deg, var(--ink) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 20px,
    calc(100% - 13px) 20px;
  background-repeat: no-repeat;
  background-size: 5px 5px, 5px 5px;
  padding-right: 38px;
}

.field textarea {
  min-height: 176px;
  resize: vertical;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  border-color: var(--green);
  outline: 3px solid rgba(11, 127, 91, 0.18);
  outline-offset: 0;
}

.field input[aria-invalid="true"],
.field select[aria-invalid="true"],
.field textarea[aria-invalid="true"] {
  border-color: var(--red);
}

.field-error,
.field-meta,
.form-status,
.submit-row p {
  font-size: 11px;
}

.field-error {
  color: var(--red);
  display: block;
  min-height: 18px;
  padding-top: 4px;
}

.field-meta {
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

.field-meta .field-error {
  flex: 1;
}

.verification-row {
  margin-top: 8px;
  max-width: 420px;
}

.verification-row .cf-turnstile {
  min-height: 65px;
}

.submit-row {
  align-items: center;
  border-top: 1px solid var(--line);
  display: flex;
  gap: 20px;
  margin-top: 16px;
  padding-top: 20px;
}

.submit-row .primary-action {
  border: 0;
  cursor: pointer;
  flex: 0 0 auto;
}

.submit-row .primary-action:disabled {
  cursor: wait;
  opacity: 0.58;
}

.submit-row p {
  color: var(--muted);
  margin: 0;
  max-width: 380px;
}

.submit-row p a {
  color: var(--ink);
  font-weight: 700;
}

.form-status {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-weight: 700;
  margin: 12px 0 0;
  min-height: 18px;
}

.form-status.success {
  color: var(--green);
}

.form-status.error {
  color: var(--red);
}

.form-trap {
  height: 1px;
  left: -10000px;
  overflow: hidden;
  position: absolute;
  top: auto;
  width: 1px;
}

.closing-band {
  align-items: end;
  background: var(--yellow);
  display: flex;
  justify-content: space-between;
}

.closing-band h2 {
  margin-bottom: 0;
  max-width: 760px;
}

.closing-actions {
  justify-content: flex-end;
  margin: 0;
}

footer {
  align-items: center;
  background: var(--deep);
  color: #bdc7c1;
  display: flex;
  font-size: 11px;
  justify-content: space-between;
  padding: 28px max(24px, calc((100% - var(--max)) / 2));
}

footer a {
  color: var(--white);
  font-weight: 700;
}

.legal-page {
  background: var(--white);
  padding: 104px max(24px, calc((100% - 900px) / 2));
}

.legal-heading {
  border-bottom: 1px solid var(--line);
  margin-bottom: 54px;
  padding-bottom: 48px;
}

.legal-heading h1 {
  font-size: 76px;
  line-height: 0.96;
  margin-bottom: 20px;
}

.legal-heading > p:last-child {
  color: var(--muted);
  font-size: 18px;
  max-width: 760px;
}

.legal-meta {
  color: var(--green);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.legal-section {
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(220px, 0.65fr) minmax(0, 1.35fr);
  padding: 34px 0;
}

.legal-section + .legal-section {
  border-top: 1px solid var(--line);
}

.legal-section h2 {
  font-size: 24px;
  line-height: 1.2;
  margin: 0;
}

.legal-section p,
.legal-section ul {
  color: var(--muted);
  margin: 0;
}

.legal-section ul {
  padding-left: 20px;
}

.legal-section li + li {
  margin-top: 8px;
}

.legal-section p + p,
.legal-section ul + p {
  margin-top: 18px;
}

.legal-section a {
  color: var(--ink);
  font-weight: 700;
}

@media (max-width: 1050px) {
  h1 {
    font-size: 100px;
  }

  h2 {
    font-size: 52px;
  }

  .signal-strip,
  .principle-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .acceptance-flow {
    grid-template-columns: repeat(3, 1fr);
  }

  .product-feature {
    grid-template-columns: 1fr;
  }

  .product-visual {
    min-height: 430px;
  }

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

  .product-list article:first-child,
  .product-list article:nth-child(odd) {
    border-left: 1px solid var(--line);
  }
}

@media (max-width: 760px) {
  nav a:not(.nav-action) {
    display: none;
  }

  .hero {
    background-position: 35% center;
    min-height: calc(100svh - 130px);
    padding-bottom: 54px;
    padding-top: 54px;
  }

  h1 {
    font-size: 78px;
  }

  h2 {
    font-size: 46px;
  }

  .category-copy,
  .origin-band,
  .contact-band {
    grid-template-columns: 1fr;
  }

  .origin-band,
  .contact-band {
    gap: 34px;
  }

  .closing-band {
    align-items: start;
    flex-direction: column;
    gap: 32px;
  }

  .legal-section {
    gap: 12px;
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  .site-header {
    min-height: 62px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .nav-action {
    font-size: 11px;
    min-height: 38px;
    padding: 7px 9px;
  }

  h1 {
    font-size: 58px;
  }

  h2 {
    font-size: 38px;
  }

  .hero-lede {
    font-size: 17px;
  }

  .hero-actions,
  .closing-actions {
    align-items: stretch;
    flex-direction: column;
    width: 100%;
  }

  .signal-strip,
  .acceptance-flow,
  .product-list,
  .principle-grid {
    grid-template-columns: 1fr;
  }

  .signal-strip div,
  .signal-strip div:last-child {
    border-left: 0;
    border-right: 0;
    border-top: 1px solid rgba(21, 26, 23, 0.24);
    min-height: 74px;
  }

  .category-band,
  .suite-band,
  .method-band,
  .origin-band,
  .contact-band,
  .closing-band {
    padding: 72px 18px;
  }

  .legal-page {
    padding: 72px 18px;
  }

  .legal-heading h1 {
    font-size: 52px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .field-wide {
    grid-column: auto;
  }

  .submit-row {
    align-items: stretch;
    flex-direction: column;
  }

  .submit-row .primary-action {
    width: 100%;
  }

  .acceptance-flow li,
  .acceptance-flow li:last-child {
    border-left: 0;
    border-right: 0;
    border-top: 1px solid var(--line);
    min-height: 110px;
  }

  .product-copy {
    padding: 28px 20px;
  }

  .product-copy h3 {
    font-size: 40px;
  }

  .product-visual {
    min-height: 250px;
  }

  .product-list article,
  .product-list article:first-child,
  .product-list article:nth-child(odd),
  .principle-grid article,
  .principle-grid article:first-child {
    border-left: 0;
    border-right: 0;
    min-height: 230px;
  }

  footer {
    align-items: start;
    flex-direction: column;
    gap: 8px;
    padding-left: 18px;
    padding-right: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .product-visual img {
    transition: none;
  }
}