/* base reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #000000;
  --white: #ffffff;
  --grey-100: #f5f5f5;
  --grey-300: #cccccc;
  --grey-500: #888888;
  --grey-700: #444444;
  --grey-900: #111111;
  --font: "Space Grotesk", "Arial", "Helvetica Neue", sans-serif;
  --mono: "Courier New", "Courier", monospace;
}

html { scroll-behavior: smooth; }

body {
  background: var(--black);
  color: var(--white);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

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

/* nav — fixed, blurred background */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 48px;
  border-bottom: 1px solid var(--grey-900);
  background: rgba(0,0,0,0.9);
  backdrop-filter: blur(8px);
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.nav-logo {
  width: 28px;
  height: 28px;
  object-fit: contain;
  filter: invert(1);
}

.nav-brand {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-right a {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--grey-500);
  transition: color 0.2s;
}

.nav-right a:hover { color: var(--white); }

.nav-cta {
  border: 1px solid var(--grey-700) !important;
  padding: 8px 18px;
  color: var(--white) !important;
  transition: background 0.2s, color 0.2s !important;
}

.nav-cta:hover {
  background: var(--white) !important;
  color: var(--black) !important;
}

/* hero — full viewport, subtle horizontal grid lines */
.hero {
  min-height: 100vh;
  padding: 180px 48px 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-bottom: 1px solid var(--grey-900);
  position: relative;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.18;
  z-index: 0;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 79px,
    rgba(255,255,255,0.02) 79px,
    rgba(255,255,255,0.02) 80px
  );
  pointer-events: none;
  z-index: 1;
}

.hero-eyebrow,
.hero-heading,
.hero-sub,
.hero-actions,
.hero-rule {
  position: relative;
  z-index: 2;
}

.hero-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--grey-500);
  margin-bottom: 28px;
}

.hero-heading {
  font-size: clamp(4rem, 11vw, 9rem);
  font-weight: 900;
  line-height: 0.92;
  letter-spacing: -0.03em;
  margin-bottom: 40px;
  max-width: 900px;
}

.hero-sub {
  font-size: 1rem;
  color: var(--grey-500);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 48px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-rule {
  position: absolute;
  right: 48px;
  top: 180px;
  bottom: 80px;
  width: 1px;
  background: var(--grey-900);
}

/* buttons */
.btn-primary {
  display: inline-block;
  padding: 14px 32px;
  background: var(--white);
  color: var(--black);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  transition: background 0.2s;
}

.btn-primary:hover { background: var(--grey-300); }

.btn-ghost {
  display: inline-block;
  padding: 14px 32px;
  border: 1px solid var(--grey-700);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  transition: background 0.2s, color 0.2s;
}

.btn-ghost:hover {
  background: var(--white);
  color: var(--black);
}

/* stat bar — four numbers with vertical dividers */
.stat-bar {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: 48px;
  border-bottom: 1px solid var(--grey-900);
  background: var(--grey-900);
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.stat-num {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 900;
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--mono);
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  color: var(--grey-500);
  text-align: center;
}

.stat-divider {
  width: 1px;
  height: 60px;
  background: var(--grey-700);
}

/* monospaced label above each section */
.section-label {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--grey-300);
  margin-bottom: 48px;
  border-left: 2px solid var(--white);
  padding-left: 14px;
}

.section-intro {
  font-size: 0.95rem;
  color: var(--grey-500);
  max-width: 560px;
  line-height: 1.7;
  margin-bottom: 56px;
  margin-top: -24px;
}

/* operating model — two column layout */
.mission {
  padding: 100px 48px;
  border-bottom: 1px solid var(--grey-900);
}

.mission-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.mission-statement h2 {
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.05;
}

.mission-body p {
  font-size: 0.95rem;
  color: var(--grey-500);
  line-height: 1.8;
  margin-bottom: 20px;
}

.mission-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 8px;
}

.mission-tags span {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  padding: 6px 12px;
  border: 1px solid var(--grey-700);
  color: var(--grey-500);
}

/* platform tiers */
.platform {
  padding: 100px 48px;
  border-bottom: 1px solid var(--grey-900);
}

.tier-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0;
  margin-bottom: 24px;
}

.tier-card {
  padding: 0;
  border: 1px solid var(--grey-900);
  transition: background 0.2s;
  overflow: hidden;
}

.tier-card:hover { background: var(--grey-900); }

.tier-video {
  display: block;
  width: 100%;
  height: 200px;
  object-fit: cover;
  object-position: center;
  border-bottom: 1px solid var(--grey-900);
  opacity: 0.9;
}

.tier-label {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  color: var(--grey-700);
  margin-top: 32px;
  margin-bottom: 12px;
  padding: 0 36px;
}

.tier-card h3 {
  font-size: 1rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
  padding: 0 36px;
}

.tier-card p {
  font-size: 0.88rem;
  color: var(--grey-500);
  line-height: 1.7;
  margin-bottom: 20px;
  padding: 0 36px;
}

.tier-card ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0 36px 36px;
}

.tier-card ul li {
  font-size: 0.8rem;
  color: var(--grey-500);
  padding-left: 14px;
  position: relative;
}

.tier-card ul li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--grey-700);
}

/* client model cards */
.model-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  margin-top: 24px;
}

.model-card {
  padding: 32px 36px;
  border: 1px solid var(--grey-900);
}

.model-card--highlight {
  border-color: var(--grey-700);
  background: var(--grey-900);
}

.model-card h4 {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  margin-bottom: 10px;
}

.model-card p {
  font-size: 0.88rem;
  color: var(--grey-500);
  line-height: 1.7;
}

/* industries — grid of use cases with $ impact */
.industries {
  padding: 100px 48px;
  border-bottom: 1px solid var(--grey-900);
}

.industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 0;
}

.industry-card {
  padding: 36px 32px;
  border: 1px solid var(--grey-900);
  transition: background 0.2s;
}

.industry-card:hover { background: var(--grey-900); }

.industry-market {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: var(--grey-700);
  margin-bottom: 10px;
}

.industry-card h4 {
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 10px;
}

.industry-card p {
  font-size: 0.83rem;
  color: var(--grey-500);
  line-height: 1.6;
  margin-bottom: 20px;
}

.industry-impact {
  font-size: 1.4rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.industry-impact span {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--grey-500);
  letter-spacing: 0.05em;
}

/* competitive advantage section */
.advantage {
  padding: 100px 48px;
  border-bottom: 1px solid var(--grey-900);
}

.advantage-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
  margin-bottom: 64px;
}

.advantage-statement h2 {
  font-size: clamp(1.4rem, 2.5vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.1;
  margin-bottom: 20px;
}

.advantage-statement p {
  font-size: 0.95rem;
  color: var(--grey-500);
  line-height: 1.8;
}

.advantage-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  border: 1px solid var(--grey-900);
}

.adv-row {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--grey-900);
}

.adv-row:last-child { border-bottom: none; }

.adv-competitor {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--white);
  align-self: start;
  padding-top: 1px;
}

.adv-weakness {
  font-size: 0.82rem;
  color: var(--grey-500);
  line-height: 1.6;
}

/* arbiter wins — four pillars */
.arbiter-wins {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
}

.win-item {
  display: flex;
  gap: 24px;
  padding: 36px 32px;
  border: 1px solid var(--grey-900);
  align-items: start;
  transition: background 0.2s;
}

.win-item:hover { background: var(--grey-900); }

.win-num {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--grey-700);
  letter-spacing: 0.1em;
  padding-top: 3px;
  flex-shrink: 0;
}

.win-item h4 {
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}

.win-item p {
  font-size: 0.85rem;
  color: var(--grey-500);
  line-height: 1.6;
}

/* contact section */
.contact {
  padding: 100px 48px;
  border-bottom: 1px solid var(--grey-900);
}

.contact h2 {
  font-size: clamp(1.5rem, 3vw, 2.5rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.contact p {
  font-size: 0.95rem;
  color: var(--grey-500);
  margin-bottom: 40px;
  max-width: 520px;
  line-height: 1.7;
}

.contact-actions {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.contact-email-display {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--grey-500);
}

.contact-note {
  font-size: 0.83rem !important;
  color: var(--grey-700) !important;
  margin-bottom: 0 !important;
}

/* footer */
.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 48px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--grey-700);
}

.footer-logo {
  width: 20px;
  height: 20px;
  object-fit: contain;
  filter: invert(1);
  opacity: 0.3;
}

.footer-right {
  font-size: 0.75rem;
  color: var(--grey-700);
  letter-spacing: 0.05em;
}

/* mobile — collapse to single column, reduce padding */
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .nav-right { gap: 16px; }
  .hero { padding: 120px 24px 60px; }
  .hero-rule { display: none; }
  .stat-bar { padding: 32px 16px; gap: 12px; flex-wrap: wrap; justify-content: center; }
  .stat-divider { display: none; }
  .mission { padding: 60px 24px; }
  .mission-grid { grid-template-columns: 1fr; gap: 32px; }
  .platform { padding: 60px 24px; }
  .tier-grid { grid-template-columns: 1fr; }
  .model-cards { grid-template-columns: 1fr; }
  .industries { padding: 60px 24px; }
  .advantage { padding: 60px 24px; }
  .advantage-grid { grid-template-columns: 1fr; gap: 40px; }
  .arbiter-wins { grid-template-columns: 1fr; }
  .contact { padding: 60px 24px; }
  .footer { padding: 24px; flex-direction: column; gap: 12px; text-align: center; }
}