:root {
  --bg: #13051f;
  --bg-deep: #07020f;
  --panel: #1b0b2d;
  --panel-2: #25103d;
  --panel-soft: #321557;
  --text: #f8f7ff;
  --muted: #beb2d8;
  --cyan: #34dfff;
  --cyan-2: #8ff2ff;
  --violet: #8b4dff;
  --violet-2: #c49cff;
  --magenta: #e85cff;
  --line: rgba(255, 255, 255, 0.13);
  --line-cyan: rgba(52, 223, 255, 0.3);
  --line-violet: rgba(139, 77, 255, 0.34);
  --shadow: 0 28px 90px rgba(0, 0, 0, 0.48);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", Arial, sans-serif;
  color: var(--text);
  background:
    linear-gradient(145deg, rgba(52, 223, 255, 0.12), transparent 32%),
    linear-gradient(225deg, rgba(139, 77, 255, 0.2), transparent 36%),
    var(--bg-deep);
  letter-spacing: 0;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.034) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.034) 1px, transparent 1px);
  background-size: 82px 82px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.82), transparent 72%);
  pointer-events: none;
}

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

p {
  color: var(--muted);
  line-height: 1.7;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding: 18px 0;
}

.site-header::before {
  content: "";
  position: absolute;
  inset: 8px -18px;
  z-index: -1;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  background: rgba(7, 2, 15, 0.74);
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.24);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  color: var(--text);
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-cyan);
  border-radius: 8px;
  background: linear-gradient(135deg, rgba(52, 223, 255, 0.24), rgba(139, 77, 255, 0.22));
  color: var(--cyan-2);
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 0.86rem;
  box-shadow: 0 0 24px rgba(52, 223, 255, 0.22);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a {
  transition: color 180ms ease, border-color 180ms ease, background 180ms ease;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.footer-links a:hover,
.footer-links a:focus-visible,
.legal-card a:hover,
.legal-card a:focus-visible {
  color: var(--cyan-2);
}

.nav-cta {
  padding: 11px 16px;
  border: 1px solid var(--line-cyan);
  border-radius: 8px;
  background: rgba(52, 223, 255, 0.08);
  color: var(--text);
  box-shadow: 0 0 22px rgba(52, 223, 255, 0.13);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  min-height: 84svh;
  margin-top: -76px;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg, rgba(7, 2, 15, 0.99) 0%, rgba(19, 5, 31, 0.9) 39%, rgba(19, 5, 31, 0.18) 70%, rgba(7, 2, 15, 0.55) 100%),
    linear-gradient(180deg, rgba(7, 2, 15, 0) 0%, rgba(7, 2, 15, 0.99) 100%),
    url("assets/aiquiz-tech-ai-edtech-hero.png");
  background-position: center;
  background-size: cover;
}

.hero-inner {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding: 180px 0 88px;
}

.hero-copy {
  max-width: 720px;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--cyan-2);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  margin: 0;
  font-family: "Space Grotesk", Arial, sans-serif;
  letter-spacing: 0;
}

h1 {
  max-width: 780px;
  font-size: clamp(4rem, 10vw, 8.2rem);
  line-height: 0.9;
  text-wrap: balance;
}

h2 {
  font-size: clamp(2rem, 4vw, 4.25rem);
  line-height: 1;
  text-wrap: balance;
}

h3 {
  font-size: 1.25rem;
}

.hero-text {
  max-width: 650px;
  margin: 28px 0 0;
  font-size: 1.16rem;
}

.hero-actions,
.cta-panel {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-actions {
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 20px;
  border: 1px solid transparent;
  border-radius: 8px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: #07020f;
  box-shadow: 0 0 34px rgba(52, 223, 255, 0.28), 0 0 28px rgba(139, 77, 255, 0.32);
}

.button-secondary {
  border-color: var(--line-violet);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  max-width: 820px;
  margin-top: 72px;
}

.hero-metrics div,
.service-card,
.proof-card,
.timeline-step,
.legal-card,
.learning-panel,
.cta-panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.035));
  box-shadow: var(--shadow);
}

.hero-metrics div {
  padding: 18px;
}

.hero-metrics span,
.card-number,
.proof-card span,
.timeline-step span,
.learning-row span {
  display: block;
  color: var(--violet-2);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-metrics strong {
  display: block;
  margin-top: 8px;
  font-size: 0.98rem;
}

.section {
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding: 92px 0;
}

.section-intro {
  padding-top: 64px;
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(280px, 0.7fr);
  gap: 54px;
  align-items: end;
}

.section-copy {
  margin: 0;
  font-size: 1.05rem;
}

.section-title {
  max-width: 760px;
  margin-bottom: 34px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.service-card {
  position: relative;
  min-height: 282px;
  padding: 24px;
  overflow: hidden;
}

.service-card::before,
.learning-panel::before,
.cta-panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(52, 223, 255, 0.16), transparent 36%, rgba(139, 77, 255, 0.18));
  pointer-events: none;
}

.service-card > *,
.learning-panel > *,
.cta-panel > * {
  position: relative;
}

.service-card h3 {
  margin-top: 62px;
}

.service-card p {
  margin: 14px 0 0;
}

.section-learning {
  width: 100%;
  padding: 72px 0;
  background:
    linear-gradient(90deg, rgba(52, 223, 255, 0.08), transparent 50%),
    linear-gradient(270deg, rgba(139, 77, 255, 0.12), transparent 48%),
    rgba(255, 255, 255, 0.02);
}

.learning-panel {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 0.85fr) minmax(320px, 1fr);
  gap: 44px;
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding: 34px;
  overflow: hidden;
}

.learning-grid {
  display: grid;
  gap: 12px;
}

.learning-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.learning-row:last-child {
  border-bottom: 0;
}

.learning-row strong {
  color: var(--text);
  line-height: 1.55;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.proof-card {
  min-height: 205px;
  padding: 24px;
}

.proof-card strong {
  display: block;
  margin-top: 52px;
  font-family: "Space Grotesk", Arial, sans-serif;
  font-size: 1.45rem;
  line-height: 1.18;
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.timeline-step {
  padding: 22px;
  background: var(--panel);
}

.timeline-step p {
  margin: 42px 0 0;
}

.cta-section {
  padding-top: 54px;
}

.cta-panel {
  position: relative;
  justify-content: space-between;
  gap: 28px;
  padding: 36px;
  overflow: hidden;
}

.cta-panel h2 {
  max-width: 720px;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(260px, 1fr) auto auto;
  gap: 30px;
  align-items: start;
  width: min(100% - 40px, var(--max));
  margin: 0 auto;
  padding: 36px 0 44px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  max-width: 420px;
  margin: 10px 0 0;
  font-size: 0.94rem;
}

.footer-links {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-weight: 700;
}

.footer-links a[aria-current="page"] {
  color: var(--cyan-2);
}

.copyright {
  text-align: right;
}

.legal-main {
  width: min(100% - 40px, 900px);
  margin: 0 auto;
  padding: 96px 0 70px;
}

.legal-hero {
  padding: 70px 0 44px;
}

.legal-hero h1 {
  font-size: clamp(3rem, 8vw, 6rem);
}

.legal-hero p:last-child {
  margin-top: 18px;
}

.legal-content {
  display: grid;
  gap: 14px;
}

.legal-card {
  padding: 24px;
}

.legal-card h2 {
  font-size: 1.35rem;
}

.legal-card p {
  margin-bottom: 0;
}

.legal-card a {
  color: var(--cyan-2);
  font-weight: 800;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

.section-title::after,
.section-heading::after {
  content: "";
  display: block;
  width: 170px;
  height: 2px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--cyan), var(--violet), var(--magenta), var(--cyan));
  background-size: 240% 100%;
  animation: gradientShift 8s ease infinite;
}

@media (max-width: 940px) {
  .site-nav {
    position: absolute;
    top: 70px;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    width: min(320px, calc(100vw - 40px));
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: rgba(7, 2, 15, 0.94);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .hero {
    min-height: auto;
    background-position: 62% center;
  }

  .hero-inner {
    padding-top: 150px;
  }

  .section-grid,
  .learning-panel,
  .site-footer {
    grid-template-columns: 1fr;
  }

  .card-grid,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .proof-grid,
  .hero-metrics {
    grid-template-columns: 1fr;
  }

  .copyright {
    text-align: left;
  }
}

@media (max-width: 640px) {
  .site-header,
  .hero-inner,
  .section,
  .learning-panel,
  .site-footer,
  .legal-main {
    width: min(100% - 28px, var(--max));
  }

  .hero {
    background:
      linear-gradient(90deg, rgba(7, 2, 15, 0.98), rgba(7, 2, 15, 0.74)),
      linear-gradient(180deg, rgba(7, 2, 15, 0) 0%, rgba(7, 2, 15, 1) 100%),
      url("assets/aiquiz-tech-ai-edtech-hero.png");
    background-position: 68% center;
    background-size: cover;
  }

  .hero-inner {
    padding-bottom: 58px;
  }

  h1 {
    font-size: clamp(3.1rem, 17vw, 5rem);
  }

  .hero-text {
    font-size: 1.04rem;
  }

  .section {
    padding: 66px 0;
  }

  .card-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .service-card,
  .proof-card {
    min-height: 220px;
  }

  .learning-panel,
  .cta-panel {
    padding: 24px;
  }

  .learning-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .footer-links {
    flex-direction: column;
    gap: 10px;
  }
}