:root {
  --ink: #050505;
  --charcoal: #1a1a1a;
  --graphite: #6a6a6a;
  --line: #d8d8d8;
  --mist: #f4f4f4;
  --paper: #fbfbfa;
  --gold: #d4af37;
  --red: #b71c1c;
  --max: 1180px;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "Eurostile", "Microgramma D Extended", "Bank Gothic", "Segoe UI", Arial, sans-serif;
  line-height: 1.5;
}

body::before {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  content: "";
  background:
    linear-gradient(rgba(5, 5, 5, .035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 5, 5, .035) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black, transparent 80%);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 48px);
  border-bottom: 1px solid rgba(5, 5, 5, .14);
  background: rgba(251, 251, 250, .9);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.brand-mark {
  width: 34px;
  height: 34px;
  background: url("assets/faundra-mark.png") center / contain no-repeat;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 3vw, 34px);
  color: var(--charcoal);
  font-size: .82rem;
  letter-spacing: .09em;
  text-transform: uppercase;
}

.nav a {
  padding: 8px 0;
  border-bottom: 1px solid transparent;
}

.nav a:hover {
  border-color: var(--ink);
}

.header-action,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  font: inherit;
  font-size: .82rem;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
  cursor: pointer;
}

.header-action,
.button.primary {
  background: var(--ink);
  color: white;
}

.button:disabled {
  cursor: wait;
  opacity: .62;
}

.button.secondary {
  background: transparent;
  color: var(--ink);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 470px);
  gap: clamp(36px, 8vw, 92px);
  align-items: center;
  min-height: calc(100vh - 72px);
  padding: clamp(64px, 8vw, 112px) clamp(18px, 5vw, 64px) 72px;
  overflow: hidden;
}

.hero::after {
  position: absolute;
  right: clamp(18px, 5vw, 64px);
  bottom: 26px;
  left: clamp(18px, 5vw, 64px);
  height: 1px;
  content: "";
  background: var(--line);
}

.hero-grid {
  position: absolute;
  inset: 84px clamp(18px, 5vw, 64px) 72px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  pointer-events: none;
  opacity: .72;
}

.hero-grid span {
  border-left: 1px solid rgba(5, 5, 5, .08);
}

.hero-content,
.hero-identity {
  position: relative;
  z-index: 1;
}

.section-kicker {
  margin: 0 0 18px;
  color: var(--graphite);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

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

h1 {
  max-width: 880px;
  margin-bottom: 22px;
  font-size: clamp(4.3rem, 12vw, 9.8rem);
  line-height: .86;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 22px;
  font-size: clamp(2.35rem, 5vw, 5.35rem);
  line-height: .95;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.1rem;
  line-height: 1.1;
}

.hero-copy {
  max-width: 650px;
  margin-bottom: 34px;
  color: var(--charcoal);
  font-size: clamp(1.05rem, 2vw, 1.34rem);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.hero-identity {
  justify-self: center;
  width: min(100%, 470px);
}

.identity-ring {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 50%;
  background:
    radial-gradient(circle, rgba(212, 175, 55, .18), transparent 32%),
    repeating-conic-gradient(from 30deg, rgba(5, 5, 5, .08) 0 1deg, transparent 1deg 60deg);
}

.identity-ring img {
  width: 64%;
  color: var(--ink);
}

.identity-caption {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 18px;
  border: 1px solid var(--line);
  background: rgba(251, 251, 250, .72);
}

.identity-caption span {
  padding: 14px 10px;
  text-align: center;
  font-size: .75rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.identity-caption span + span {
  border-left: 1px solid var(--line);
}

.intro-band {
  padding: 34px clamp(18px, 5vw, 64px);
  border-bottom: 1px solid var(--line);
  background: var(--ink);
  color: white;
}

.intro-band p {
  max-width: var(--max);
  margin: 0 auto;
  font-size: clamp(1.25rem, 3vw, 2.3rem);
  line-height: 1.12;
}

.section {
  width: min(100% - 36px, var(--max));
  margin: 0 auto;
  padding: clamp(70px, 10vw, 126px) 0;
  border-bottom: 1px solid var(--line);
}

.split,
.platform,
.contact {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: clamp(34px, 7vw, 78px);
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.capability {
  min-height: 270px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, .58);
}

.capability p,
.dark-copy p,
.platform-copy p {
  color: var(--charcoal);
}

.capability-icon {
  display: block;
  width: 48px;
  height: 48px;
  margin-bottom: 34px;
  color: var(--ink);
}

.capability-icon.hex {
  background: currentColor;
  clip-path: polygon(50% 4%, 92% 27%, 92% 73%, 50% 96%, 8% 73%, 8% 27%, 50% 4%, 50% 18%, 20% 35%, 20% 65%, 50% 82%, 80% 65%, 80% 35%, 50% 18%);
}

.capability-icon.nodes {
  background:
    linear-gradient(currentColor, currentColor) 50% 0 / 3px 100% no-repeat,
    linear-gradient(90deg, currentColor, currentColor) 0 50% / 100% 3px no-repeat;
}

.capability-icon.nodes::after {
  display: block;
  width: 100%;
  height: 100%;
  content: "";
  background:
    radial-gradient(circle at 50% 4px, currentColor 0 4px, transparent 5px),
    radial-gradient(circle at 50% calc(100% - 4px), currentColor 0 4px, transparent 5px),
    radial-gradient(circle at 4px 50%, currentColor 0 4px, transparent 5px),
    radial-gradient(circle at calc(100% - 4px) 50%, currentColor 0 4px, transparent 5px);
}

.capability-icon.bars {
  background:
    linear-gradient(currentColor, currentColor) 4px 30px / 5px 18px no-repeat,
    linear-gradient(currentColor, currentColor) 17px 20px / 5px 28px no-repeat,
    linear-gradient(currentColor, currentColor) 30px 10px / 5px 38px no-repeat,
    linear-gradient(currentColor, currentColor) 43px 0 / 5px 48px no-repeat;
}

.dark {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(34px, 8vw, 96px);
  width: 100%;
  max-width: none;
  padding-inline: max(18px, calc((100vw - var(--max)) / 2));
  background: var(--ink);
  color: white;
}

.dark .section-kicker,
.dark-copy p {
  color: #b8b8b8;
}

.security-stack {
  display: grid;
  border: 1px solid rgba(255, 255, 255, .2);
}

.security-stack div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 92px;
  padding: 24px;
  border-bottom: 1px solid rgba(255, 255, 255, .2);
}

.security-stack div:last-child {
  border-bottom: 0;
}

.security-stack span {
  color: #adadad;
  font-size: .78rem;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.security-stack strong {
  text-align: right;
  font-size: clamp(1.3rem, 3vw, 2rem);
  line-height: 1;
}

.platform {
  align-items: center;
}

.platform-visual {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(5, 5, 5, .04), rgba(212, 175, 55, .12));
}

.module {
  display: grid;
  place-items: center;
  min-height: 112px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(251, 251, 250, .85);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-align: center;
  text-transform: uppercase;
}

.module.active {
  background: var(--ink);
  color: white;
}

.module.accent {
  color: var(--ink);
  background: var(--gold);
}

.check-list {
  display: grid;
  gap: 14px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.check-list li {
  position: relative;
  padding-left: 30px;
}

.check-list li::before {
  position: absolute;
  left: 0;
  top: .18em;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  color: white;
  content: "";
  background:
    linear-gradient(45deg, transparent 42%, white 42% 58%, transparent 58%) 5px 8px / 8px 4px no-repeat,
    var(--ink);
}

.proof {
  display: grid;
  gap: 0;
  padding-block: 0;
}

.proof-line {
  display: grid;
  grid-template-columns: .42fr 1fr;
  gap: 20px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}

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

.proof-line span {
  color: var(--graphite);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.proof-line strong {
  font-size: clamp(1.2rem, 3vw, 2rem);
  line-height: 1.1;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-direct {
  max-width: 440px;
  margin: 26px 0 0;
  color: var(--charcoal);
  font-size: 1rem;
}

.contact-direct a {
  display: inline-block;
  border-bottom: 1px solid var(--ink);
  font-weight: 800;
}

.contact-form label {
  display: grid;
  gap: 8px;
}

.contact-form label.full,
.contact-form button,
.form-status {
  grid-column: 1 / -1;
}

.contact-form span {
  color: var(--graphite);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: white;
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  padding: 14px 15px;
}

textarea {
  resize: vertical;
}

input:focus,
textarea:focus,
.button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

.form-status {
  min-height: 24px;
  margin: 0;
  color: var(--graphite);
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 24px clamp(18px, 4vw, 48px);
  color: var(--graphite);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .12em;
  text-transform: uppercase;
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
  }

  .nav,
  .header-action {
    display: none;
  }

  .hero,
  .split,
  .dark,
  .platform,
  .contact {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 58px;
  }

  .hero-identity {
    justify-self: stretch;
    max-width: 520px;
  }

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

  .capability {
    min-height: 0;
  }

  .proof-line {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 620px) {
  .brand {
    font-size: .92rem;
  }

  .hero-actions,
  .contact-form {
    grid-template-columns: 1fr;
  }

  .button,
  .header-action {
    width: 100%;
  }

  .identity-caption {
    grid-template-columns: 1fr;
  }

  .identity-caption span + span {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .platform-visual {
    grid-template-columns: 1fr;
  }

  .security-stack div,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .security-stack strong {
    text-align: left;
  }
}