:root {
  --bg-main: #ffffff;
  --bg-soft: #f5f5f7;
  --bg-elevated: #ffffff;
  --border-subtle: rgba(0,0,0,0.06);
  --text-main: #111827;
  --text-muted: #6b7280;
  --accent: #0f62ff;
  --accent-soft: rgba(15,98,255,0.08);
  --radius-lg: 24px;
  --shadow-soft: 0 18px 45px rgba(15,23,42,0.08);
}

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

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

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

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: rgba(255,255,255,0.9);
  border-bottom: 1px solid rgba(148,163,184,0.25);
}

.nav-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-mark {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: radial-gradient(circle at 20% 0, #e0ecff, #0f62ff);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: white;
}

.brand-text {
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.03em;
}

.brand-text span {
  color: #0f62ff;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.9rem;
}

.nav-links a {
  text-decoration: none;
  color: #4b5563;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.16s ease, border-color 0.16s ease;
}

.nav-links a:hover {
  color: #111827;
  border-color: rgba(0,0,0,0.1);
}

.btn {
  border-radius: 999px;
  border: none;
  padding: 0.55rem 1.3rem;
  font-size: 0.9rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.16s ease;
  white-space: nowrap;
}

.btn-primary {
  background: #0f62ff;
  color: #ffffff;
  box-shadow: 0 12px 30px rgba(15,98,255,0.35);
}

.btn-primary:hover {
  box-shadow: 0 18px 45px rgba(15,98,255,0.45);
  transform: translateY(-1px);
}

.btn-outline {
  background: rgba(15,98,255,0.04);
  color: #0f62ff;
  border: 1px solid rgba(15,98,255,0.25);
}

.btn-outline:hover {
  background: rgba(15,98,255,0.08);
}

.btn-link {
  background: transparent;
  color: #111827;
  padding-inline: 0;
  border-radius: 0;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.btn-full {
  width: 100%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  border: none;
  background: transparent;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: #111827;
  border-radius: 999px;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 0 1.5rem 1rem;
  background: #ffffff;
  border-bottom: 1px solid rgba(148,163,184,0.3);
}

.mobile-nav a {
  text-decoration: none;
  color: #111827;
  font-size: 0.95rem;
  padding: 0.35rem 0;
}

.mobile-nav .mobile-cta {
  margin-top: 0.4rem;
  font-weight: 500;
}

.hero {
  padding: 4.5rem 0 3.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.1fr);
  gap: 3rem;
  align-items: center;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #6b7280;
  margin-bottom: 0.7rem;
}

.hero h1 {
  font-size: clamp(2.6rem, 4vw, 3.4rem);
  line-height: 1.02;
  margin: 0 0 1rem;
}

.hero h1 span {
  background: linear-gradient(120deg, #0f62ff, #6366f1);
  -webkit-background-clip: text;
  color: transparent;
}

.hero-body {
  font-size: 1rem;
  color: #4b5563;
  max-width: 30rem;
  margin: 0 0 1.6rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1.4rem;
}

.hero-footnote {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.8rem;
  color: #6b7280;
}

.hero-footnote span {
  padding: 0.3rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(209,213,219,0.8);
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-card {
  background: #f5f5f7;
  border-radius: 32px;
  padding: 1.6rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148,163,184,0.35);
}

.hero-card-main img {
  border-radius: 24px;
}

.panel {
  padding: 4.5rem 0;
}

.panel-soft {
  background: #f5f5f7;
}

.panel-light {
  background: #ffffff;
}

.panel-highlight {
  background: #0f62ff;
  color: #ffffff;
}

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.section-heading {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-heading h2 {
  font-size: 2rem;
  margin: 0 0 0.4rem;
}

.section-heading p {
  margin: 0;
  color: #6b7280;
}

.list {
  margin: 1rem 0 0;
  padding-left: 1.1rem;
  color: #4b5563;
  font-size: 0.96rem;
}

.list li + li {
  margin-top: 0.25rem;
}

.device-card {
  background: #ffffff;
  border-radius: 32px;
  padding: 1.3rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148,163,184,0.35);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.6rem;
  margin-bottom: 2.5rem;
}

.feature-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 1.4rem 1.5rem;
  border: 1px solid rgba(209,213,219,0.9);
  box-shadow: 0 10px 30px rgba(148,163,184,0.18);
}

.feature-card h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
}

.feature-card p {
  margin: 0;
  color: #4b5563;
}

.feature-visual img {
  border-radius: 28px;
  box-shadow: var(--shadow-soft);
}

.schools-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.9fr);
  gap: 2.5rem;
  align-items: center;
}

.tag-pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: #f5f5f7;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #4b5563;
  margin-bottom: 0.7rem;
}

.schools-note {
  font-size: 0.95rem;
  color: #4b5563;
  margin: 0 0 1.1rem;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.7rem;
}

.pricing-card {
  background: #ffffff;
  border-radius: 24px;
  padding: 1.6rem 1.4rem;
  border: 1px solid rgba(209,213,219,0.95);
  box-shadow: 0 12px 36px rgba(148,163,184,0.25);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.pricing-card-highlight {
  border-color: #0f62ff;
}

.pricing-label {
  font-size: 0.86rem;
  color: #2563eb;
  margin: 0;
}

.pricing-copy {
  margin: 0;
  color: #4b5563;
  font-size: 0.95rem;
}

.badge-hot {
  position: absolute;
  top: 1.1rem;
  right: 1.3rem;
  font-size: 0.74rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: rgba(15,98,255,0.06);
  color: #0f62ff;
}

.waitlist-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 2rem;
  align-items: flex-start;
}

.waitlist-copy h2 {
  margin-top: 0;
  margin-bottom: 0.7rem;
  font-size: 2rem;
}

.waitlist-copy p {
  margin: 0;
  font-size: 0.98rem;
  color: rgba(255,255,255,0.9);
}

.waitlist-form {
  background: rgba(255,255,255,0.06);
  border-radius: 18px;
  padding: 1.3rem 1.2rem;
  border: 1px solid rgba(255,255,255,0.15);
}

.form-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  margin-bottom: 0.8rem;
}

.form-row label {
  font-size: 0.82rem;
}

.form-row input,
.form-row select,
.form-row textarea {
  border-radius: 10px;
  border: 1px solid rgba(148,163,184,0.9);
  padding: 0.5rem 0.7rem;
  font-size: 0.9rem;
  font-family: inherit;
}

.form-row textarea {
  resize: vertical;
  min-height: 72px;
}

.form-footnote {
  margin: 0.35rem 0 0;
  font-size: 0.78rem;
  color: rgba(249,250,251,0.9);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.faq-item {
  background: #f9fafb;
  border-radius: 20px;
  padding: 1.3rem 1.2rem;
  border: 1px solid rgba(209,213,219,0.9);
}

.faq-item h3 {
  margin-top: 0;
  margin-bottom: 0.4rem;
}

.faq-item p {
  margin: 0;
  font-size: 0.93rem;
  color: #4b5563;
}

.site-footer {
  border-top: 1px solid rgba(229,231,235,0.9);
  padding: 2.5rem 0 2.2rem;
  background: #ffffff;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr));
  gap: 1.6rem;
}

.footer-brand p {
  margin-top: 0.7rem;
  font-size: 0.9rem;
  color: #6b7280;
  max-width: 20rem;
}

.footer-column h4 {
  margin-top: 0;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.footer-column a,
.footer-column span {
  display: block;
  font-size: 0.85rem;
  color: #6b7280;
  text-decoration: none;
  margin-bottom: 0.1rem;
}

.footer-column a:hover {
  color: #111827;
}

.copyright {
  margin-top: 0.3rem;
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .nav-links {
    display: none;
  }

  .site-header .btn-outline {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .hero-grid,
  .panel-grid,
  .schools-grid,
  .waitlist-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .hero {
    padding-top: 3.5rem;
  }

  .hero-visual {
    order: -1;
  }

  .feature-grid,
  .pricing-grid,
  .faq-grid,
  .footer-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 640px) {
  .container {
    padding-inline: 1.1rem;
  }

  .nav-bar {
    padding-inline: 1.1rem;
  }

  .panel {
    padding: 3.5rem 0;
  }

  .hero {
    padding-bottom: 3rem;
  }
}