:root {
  /* Fluent-inspired palette — visual language only; no Microsoft affiliation claim */
  --ink: #201f1e;
  --ink-soft: #605e5c;
  --paper: #faf9f8;
  --paper-deep: #f3f2f1;
  --surface: #ffffff;
  --brand: #0078d4;
  --brand-deep: #106ebe;
  --brand-deeper: #005a9e;
  --brand-soft: #deecf9;
  --accent: #00bcf2;
  --line: #edebe9;
  --line-strong: #c8c6c4;
  --hero-top: #0b1a2a;
  --hero-mid: #0c2d4a;
  --hero-bottom: #0078d4;
  --font-display: "Outfit", "Segoe UI", "Segoe UI Variable", sans-serif;
  --font-body: "Segoe UI", "Segoe UI Variable", "Segoe UI Web (West European)", Tahoma, sans-serif;
  --space: clamp(1rem, 2.5vw, 2rem);
  --wrap: min(1080px, calc(100% - 2 * var(--space)));
  --radius: 4px;
  --radius-md: 8px;
  --shadow: 0 1.6px 3.6px rgba(0, 0, 0, 0.13), 0 0.3px 0.9px rgba(0, 0, 0, 0.11);
  --shadow-lift: 0 6.4px 14.4px rgba(0, 0, 0, 0.13), 0 1.2px 3.6px rgba(0, 0, 0, 0.11);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background:
    radial-gradient(ellipse 70% 45% at 0% 0%, rgba(0, 120, 212, 0.07), transparent 55%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper-deep) 100%);
  min-height: 100vh;
}

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

a {
  color: inherit;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 1rem;
  z-index: 100;
}

.skip:focus {
  left: 0;
}

.wrap {
  width: var(--wrap);
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}

.mark {
  width: 0.85rem;
  height: 0.85rem;
  border-radius: 2px;
  background: linear-gradient(135deg, var(--brand) 0%, var(--brand) 50%, var(--accent) 50%, var(--accent) 100%);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.nav a {
  text-decoration: none;
  color: var(--ink-soft);
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--brand-deep);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 0.45rem 0.95rem;
  font-weight: 600;
  color: #fff !important;
  background: var(--brand);
  border-radius: var(--radius);
}

.nav-cta:hover,
.nav-cta:focus-visible {
  background: var(--brand-deep);
  color: #fff !important;
}

.hero {
  position: relative;
  overflow: clip;
  min-height: min(88vh, 40rem);
  display: flex;
  align-items: center;
  padding: clamp(4rem, 12vh, 7rem) 0 clamp(3.5rem, 9vh, 5.5rem);
}

.hero-atmosphere {
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(120deg, var(--hero-top) 0%, var(--hero-mid) 42%, var(--hero-bottom) 100%);
}

.hero-atmosphere::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 50% at 85% 20%, rgba(0, 188, 242, 0.28), transparent 60%),
    radial-gradient(ellipse 40% 45% at 10% 85%, rgba(0, 120, 212, 0.35), transparent 55%);
  animation: atmosphere-drift 14s ease-in-out infinite alternate;
}

.hero-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.18;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(180deg, #000 20%, transparent 90%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 40rem;
  color: #e8f3fb;
}

.hero-brand {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.65rem, 3.4vw, 2.15rem);
  letter-spacing: -0.03em;
  color: #fff;
  animation: rise 700ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero-who {
  margin: 0 0 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: #9fd4f5;
  animation: rise 750ms 40ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.hero h1 {
  margin: 0 0 1.1rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.5rem, 6vw, 3.85rem);
  letter-spacing: -0.045em;
  line-height: 1.02;
  color: #fff;
  animation: rise 800ms 80ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.lede {
  margin: 0 0 1.85rem;
  font-size: 1.14rem;
  color: #c5dcf0;
  max-width: 34rem;
  animation: rise 850ms 120ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  animation: rise 900ms 160ms cubic-bezier(0.22, 1, 0.36, 1) both;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.3rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: background 160ms ease, color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: var(--brand-deep);
}

.btn-ghost {
  border-color: color-mix(in srgb, #d6ebff 55%, transparent);
  color: #f3f9ff;
}

.btn-ghost:hover {
  border-color: #f3f9ff;
  background: rgba(255, 255, 255, 0.08);
}

.section {
  padding: clamp(3.5rem, 8vh, 5.75rem) 0;
}

.eyebrow {
  margin: 0 0 0.55rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-deep);
}

.section h2 {
  margin: 0 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 3.2vw, 2.4rem);
  letter-spacing: -0.035em;
  line-height: 1.12;
  color: var(--ink);
}

.section-lede {
  margin: 0 0 2.35rem;
  max-width: 40rem;
  color: var(--ink-soft);
}

.who {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.lanes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
}

.lanes-four {
  grid-template-columns: repeat(4, 1fr);
}

.lanes-optional-label {
  margin: 2.75rem 0 1.25rem;
}

.lanes-optional {
  margin-top: 0;
}

.engagement {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.lane {
  padding: 0;
  border: none;
  background: transparent;
  border-top: 3px solid var(--brand);
  padding-top: 1.15rem;
}

.lane:nth-child(2) {
  border-top-color: var(--brand-deep);
}

.lane:nth-child(3) {
  border-top-color: var(--accent);
}

.lane h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.lane p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.difference {
  background: transparent;
}

.split {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1.75rem, 4vw, 3rem);
}

.split-item {
  padding-top: 1rem;
  border-top: 1px solid var(--line-strong);
}

.split-item h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-deeper);
}

.split-item p {
  margin: 0;
  color: var(--ink-soft);
}

.contrast {
  background: var(--hero-mid);
  color: #e8f3fb;
}

.contrast h2 {
  color: #fff;
}

.contrast .section-lede {
  color: #a9c7de;
}

.shift {
  max-width: 44rem;
}

.compare {
  margin: 0;
  display: grid;
  gap: 1.15rem;
}

.compare div {
  display: grid;
  gap: 0.35rem;
  padding: 1.1rem 0;
  border-top: 1px solid color-mix(in srgb, #8ec8f0 35%, transparent);
  background: transparent;
}

.compare dt {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--accent);
}

.compare dd {
  margin: 0;
  color: #d6ebff;
}

.trust {
  background: var(--surface);
  border-block: 1px solid var(--line);
}

.trust-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.85rem;
  max-width: 40rem;
}

.trust-list li {
  position: relative;
  padding-left: 1.35rem;
  color: var(--ink-soft);
}

.trust-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 0.55rem;
  height: 0.55rem;
  background: var(--brand);
  border-radius: 1px;
}

.contact {
  background:
    linear-gradient(135deg, var(--hero-top) 0%, var(--hero-mid) 45%, var(--brand) 100%);
  color: #e8f3fb;
}

.contact h2 {
  color: #fff;
}

.contact .section-lede {
  color: #b7d0e4;
  margin-bottom: 1.75rem;
}

.contact-inner {
  max-width: 40rem;
}

.contact .btn-primary {
  background: #fff;
  color: var(--brand-deeper);
}

.contact .btn-primary:hover {
  background: var(--brand-soft);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 2.5rem;
  font-size: 0.95rem;
  color: var(--ink-soft);
  background: var(--paper);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
}

.footer-inner p {
  margin: 0;
}

.footer-inner a {
  text-decoration: none;
  color: var(--brand-deep);
  font-weight: 600;
}

.footer-inner a:hover,
.footer-inner a:focus-visible {
  text-decoration: underline;
}

.fine {
  font-size: 0.9rem;
}

.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 450ms ease, transform 450ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@keyframes atmosphere-drift {
  from {
    transform: scale(1) translate(0, 0);
  }
  to {
    transform: scale(1.04) translate(-1.5%, 1%);
  }
}

@media (max-width: 900px) {
  .lanes,
  .lanes-four,
  .split {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }
}

@media (max-width: 560px) {
  .nav a:not(.nav-cta) {
    display: none;
  }

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

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}