:root {
  --dbx-blue: #0061fe;
  --dbx-blue-hover: #004dc7;
  --dbx-blue-light: #b4d1ff;
  --dbx-blue-wash: #f2f7ff;
  --dbx-canvas: #f7f5f2;
  --dbx-canvas-text: #f7f5f2;
  --dbx-ink: #1e1919;
  --dbx-ink-soft: #44403d;
  --dbx-muted: #736c64;
  --dbx-muted-strong: #5b5650;
  --dbx-surface: #ffffff;
  --dbx-surface-soft: #ebe9e6;
  --dbx-border: #d3cec9;
  --dbx-dark: #1e1919;
  --dbx-dark-elevated: #2d2b29;
  --brand-lime: #b4dc19;
  --brand-yellow: #fad24b;
  --brand-orange: #fa551e;
  --success: #0f503c;
  --font-display: "Sharp Grotesk", SharpGrotesk, "Atlas Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-body: "Atlas Grotesk Web", "Atlas Grotesk", AtlasGrotesk, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --r-button: 16px;
  --r-card: 16px;
  --r-xl: 24px;
  --container: 1200px;
  --space-section: 96px;
  --nav-height: 64px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.5;
  color: var(--dbx-ink-soft);
  background: var(--dbx-canvas);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--dbx-blue);
  text-decoration: none;
}

a:hover {
  color: var(--dbx-blue-hover);
}

:focus-visible {
  outline: 2px solid var(--dbx-blue);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 1000;
  padding: 12px 16px;
  background: var(--dbx-blue);
  color: var(--dbx-canvas-text);
}

.skip-link:focus {
  left: 16px;
  top: 16px;
}

.container {
  width: min(100% - 32px, var(--container));
  margin-inline: auto;
}

/* Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--dbx-surface);
  border-bottom: 1px solid var(--dbx-border-soft, var(--dbx-surface-soft));
  height: var(--nav-height);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 16px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 18px;
  color: var(--dbx-ink);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.logo span {
  color: var(--dbx-blue);
}

.nav-links {
  display: none;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 28px;
  align-items: center;
}

.nav-links a {
  color: var(--dbx-ink);
  font-size: 16px;
}

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

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

.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  height: 2px;
  background: var(--dbx-ink);
  border-radius: 1px;
  transition: transform 0.2s, opacity 0.2s;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: var(--dbx-surface);
  padding: 24px;
  z-index: 99;
  overflow-y: auto;
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav ul {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
}

.mobile-nav li {
  border-bottom: 1px solid var(--dbx-surface-soft);
}

.mobile-nav a {
  display: block;
  padding: 16px 0;
  color: var(--dbx-ink);
  font-size: 18px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1;
  border-radius: var(--r-button);
  padding: 16px 24px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  text-align: center;
}

.btn-primary {
  background: var(--dbx-blue);
  color: var(--dbx-canvas-text);
}

.btn-primary:hover {
  background: var(--dbx-blue-hover);
  color: var(--dbx-canvas-text);
}

.btn-secondary {
  background: transparent;
  color: var(--dbx-ink);
  border-color: var(--dbx-border);
  padding: 14px 22px;
}

.btn-secondary:hover {
  border-color: var(--dbx-ink);
  color: var(--dbx-ink);
}

.btn-on-dark {
  background: transparent;
  color: var(--dbx-canvas-text);
  border-color: rgba(247, 245, 242, 0.4);
  padding: 14px 22px;
}

.btn-on-dark:hover {
  border-color: var(--dbx-canvas-text);
  color: var(--dbx-canvas-text);
}

.btn-arrow::after {
  content: "→";
  font-size: 18px;
}

/* Hero */
.hero {
  padding: 48px 0 80px;
}

.hero-grid {
  display: grid;
  gap: 48px;
  align-items: center;
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--dbx-muted);
  margin: 0 0 16px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(40px, 8vw, 64px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.02em;
  color: var(--dbx-ink);
  margin: 0 0 24px;
}

.hero-title .brand {
  display: block;
  color: var(--dbx-blue);
}

.hero-lead {
  font-size: clamp(18px, 2.5vw, 20px);
  line-height: 1.5;
  color: var(--dbx-muted-strong);
  max-width: 540px;
  margin: 0 0 32px;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 32px;
}

.hero-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero-bullets li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 16px;
  color: var(--dbx-ink-soft);
}

.hero-bullets li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  background: var(--dbx-blue-light);
  border-radius: 50%;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%230061FE'%3E%3Cpath d='M6.5 11.5L3 8l1-1 2.5 2.5L12 4l1 1-6.5 6.5z'/%3E%3C/svg%3E");
  background-size: 14px;
  background-repeat: no-repeat;
  background-position: center;
}

/* Product mockup */
.mockup-stack {
  position: relative;
  max-width: 520px;
  margin-inline: auto;
}

.mockup-desktop {
  background: var(--dbx-surface);
  border-radius: var(--r-xl);
  border: 1px solid var(--dbx-border);
  box-shadow: 0 24px 48px rgba(30, 25, 25, 0.08);
  overflow: hidden;
}

.mockup-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--dbx-surface-soft);
  border-bottom: 1px solid var(--dbx-border);
}

.mockup-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--dbx-border);
}

.mockup-dot:nth-child(1) { background: #fa551e; }
.mockup-dot:nth-child(2) { background: var(--brand-yellow); }
.mockup-dot:nth-child(3) { background: var(--brand-lime); }

.mockup-title {
  margin-left: 8px;
  font-size: 13px;
  color: var(--dbx-muted);
}

.mockup-body {
  padding: 20px;
  background: var(--dbx-blue-wash);
  min-height: 280px;
}

.flow-diagram {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.flow-row {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--dbx-surface);
  border: 1px solid var(--dbx-border);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13px;
}

.flow-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 11px;
  flex-shrink: 0;
}

.flow-icon--api { background: var(--dbx-blue-light); color: var(--dbx-blue); }
.flow-icon--llm { background: #c8aff0; color: #5a3d8a; }
.flow-icon--agent { background: #fad24b; color: var(--dbx-ink); }

.flow-meta {
  margin-left: auto;
  font-size: 12px;
  color: var(--success);
  font-weight: 500;
}

.flow-hub {
  text-align: center;
  padding: 8px;
  font-size: 12px;
  font-weight: 500;
  color: var(--dbx-blue);
}

.mockup-mobile {
  position: absolute;
  right: -8px;
  bottom: -24px;
  width: 140px;
  background: var(--dbx-surface);
  border-radius: 20px;
  border: 1px solid var(--dbx-border);
  box-shadow: 0 16px 32px rgba(30, 25, 25, 0.12);
  padding: 12px;
}

.mockup-mobile-notch {
  width: 40px;
  height: 4px;
  background: var(--dbx-surface-soft);
  border-radius: 2px;
  margin: 0 auto 12px;
}

.mobile-stat {
  font-size: 11px;
  color: var(--dbx-muted);
  margin-bottom: 4px;
}

.mobile-stat strong {
  display: block;
  font-size: 18px;
  color: var(--dbx-ink);
  font-family: var(--font-display);
}

/* Trust */
.trust {
  padding: 48px 0;
  border-top: 1px solid var(--dbx-border);
  border-bottom: 1px solid var(--dbx-border);
  background: var(--dbx-surface);
}

.trust-text {
  text-align: center;
  font-family: var(--font-display);
  font-size: clamp(18px, 3vw, 22px);
  font-weight: 500;
  color: var(--dbx-ink);
  margin: 0 0 32px;
  max-width: 720px;
  margin-inline: auto;
}

.logo-rail {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 32px 48px;
  opacity: 0.85;
}

.logo-item {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 500;
  color: var(--dbx-muted-strong);
  letter-spacing: -0.01em;
}

/* Features */
.section {
  padding: var(--space-section) 0;
}

.section-label {
  font-size: 13px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--dbx-blue);
  margin: 0 0 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--dbx-ink);
  margin: 0 0 16px;
  max-width: 640px;
}

.section-copy {
  font-size: 18px;
  color: var(--dbx-muted-strong);
  max-width: 560px;
  margin: 0 0 24px;
}

.feature-block {
  display: grid;
  gap: 48px;
  align-items: center;
  margin-bottom: var(--space-section);
}

.feature-block:last-child {
  margin-bottom: 0;
}

.feature-block.reverse .feature-copy {
  order: 2;
}

.feature-block.reverse .feature-visual {
  order: 1;
}

.feature-card {
  background: var(--dbx-surface);
  border: 1px solid var(--dbx-border);
  border-radius: var(--r-card);
  padding: 24px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--dbx-ink);
  margin: 0 0 8px;
}

.feature-card p {
  margin: 0;
  font-size: 15px;
  color: var(--dbx-muted);
}

.feature-grid-mini {
  display: grid;
  gap: 12px;
}

/* Pillars */
.pillars {
  background: var(--dbx-surface-soft);
}

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

.pillar-card {
  background: var(--dbx-surface);
  border: 1px solid var(--dbx-border);
  border-radius: var(--r-card);
  padding: 24px;
}

.pillar-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--dbx-ink);
  margin: 0 0 8px;
}

.pillar-card p {
  margin: 0;
  font-size: 15px;
  color: var(--dbx-muted);
}

/* Economy */
.economy {
  text-align: center;
}

.economy-grid {
  display: grid;
  gap: 24px;
  margin-top: 48px;
  text-align: left;
}

.economy-card {
  background: var(--dbx-surface);
  border: 1px solid var(--dbx-border);
  border-radius: var(--r-xl);
  padding: 32px;
}

.economy-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 500;
  color: var(--dbx-ink);
  margin: 0 0 12px;
}

.economy-card p {
  margin: 0;
  font-size: 16px;
  color: var(--dbx-muted-strong);
}

/* Security dark */
.security {
  background: var(--dbx-dark);
  color: var(--dbx-canvas-text);
  padding: var(--space-section) 0;
  border-radius: var(--r-xl);
  margin: 0 16px;
  max-width: calc(var(--container) + 32px);
  margin-inline: auto;
}

.security-inner {
  width: min(100% - 48px, 900px);
  margin-inline: auto;
  text-align: center;
}

.security-icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 24px;
  color: var(--dbx-blue-light);
}

.security .section-label {
  color: var(--dbx-blue-light);
}

.security .section-title {
  color: var(--dbx-canvas-text);
  margin-inline: auto;
}

.security .section-copy {
  color: rgba(247, 245, 242, 0.82);
  margin-inline: auto;
  margin-bottom: 32px;
}

.security-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

/* Final CTA */
.final-cta {
  padding: var(--space-section) 0;
  text-align: center;
}

.final-cta .section-title {
  margin-inline: auto;
}

.final-cta .section-copy {
  margin-inline: auto;
  margin-bottom: 32px;
}

/* Footer */
.site-footer {
  background: var(--dbx-dark);
  color: rgba(247, 245, 242, 0.75);
  padding: 64px 0 32px;
}

.footer-grid {
  display: grid;
  gap: 32px;
  margin-bottom: 48px;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 500;
  color: var(--dbx-canvas-text);
  margin-bottom: 12px;
}

.footer-note {
  font-size: 14px;
  line-height: 1.6;
  max-width: 360px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 500;
  color: var(--dbx-canvas-text);
  margin: 0 0 16px;
}

.footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: rgba(247, 245, 242, 0.75);
  font-size: 14px;
}

.footer-col a:hover {
  color: var(--dbx-canvas-text);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--dbx-dark-elevated);
  font-size: 13px;
  color: var(--dbx-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: space-between;
}

.footer-bottom a {
  color: rgba(247, 245, 242, 0.6);
}

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

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }

  .nav-links {
    display: flex;
  }

  .hero {
    padding: 80px 0 128px;
  }

  .hero-grid {
    grid-template-columns: 1fr 1fr;
    gap: 64px;
  }

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

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

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

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .pillars-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pillars-grid .pillar-card:nth-child(4),
  .pillars-grid .pillar-card:nth-child(5) {
    grid-column: span 1;
  }
}

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

  .btn,
  .menu-toggle span {
    transition: none;
  }
}