:root {
  --bg: #070b16;
  --surface: #0f172a;
  --surface-soft: #111b32;
  --card: #ffffff;
  --text: #0f172a;
  --text-on-dark: #e2e8f0;
  --muted: #64748b;
  --brand: #ff4b4b;
  --brand-dark: #e03d3d;
  --line: #dbe4f0;
  --radius-lg: 18px;
  --radius-md: 12px;
  --shadow-lg: 0 25px 80px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 14px 36px rgba(15, 23, 42, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8fbff, #f4f8ff);
  text-rendering: optimizeLegibility;
}

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

.container {
  width: min(1140px, 92%);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 100;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.45rem 0.7rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(10px);
  background: rgba(248, 251, 255, 0.88);
  border-bottom: 1px solid #e9eef7;
}

.nav-wrap {
  min-height: 78px;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.brand {
  text-decoration: none;
  color: inherit;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-weight: 800;
}

nav {
  margin-left: auto;
}

nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 0.35rem;
}

nav a {
  text-decoration: none;
  color: #1e293b;
  padding: 0.52rem 0.74rem;
  border-radius: 9px;
  font-weight: 600;
  transition: background 0.2s ease, color 0.2s ease;
}

nav a:hover,
nav a:focus-visible {
  background: #edf3ff;
  color: #0f172a;
}

.menu-toggle {
  display: none;
}

.install-btn {
  border: 1px solid #f8b4b4;
  background: #fff5f5;
  color: #9f1239;
  border-radius: 9px;
  padding: 0.55rem 0.75rem;
  font-weight: 700;
  cursor: pointer;
}

.hero {
  background: radial-gradient(circle at 78% 18%, #193060 0%, #0a1224 50%, #070b16 100%);
  color: var(--text-on-dark);
  padding: 5rem 0 4.5rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 1.2rem;
  align-items: start;
}

.eyebrow {
  margin: 0;
  color: #93c5fd;
  font-weight: 700;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

h1 {
  margin: 0.8rem 0 0;
  font-size: clamp(2rem, 5.7vw, 4.25rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  max-width: 13ch;
}

.lead {
  margin-top: 1rem;
  color: #d6e1f3;
  max-width: 58ch;
  line-height: 1.75;
  font-size: clamp(1rem, 1.7vw, 1.16rem);
}

.cta-row {
  margin-top: 1.3rem;
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.78rem 1rem;
  font-weight: 700;
  transition: transform 0.2s ease, background 0.2s ease;
}

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

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--brand-dark);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.24);
  color: #e2e8f0;
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background: rgba(255, 255, 255, 0.16);
}

.btn-block {
  display: block;
  margin-top: 1rem;
  text-align: center;
}

.hero-meta {
  list-style: none;
  margin: 1.2rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.45rem;
  color: #d6e1f3;
}

.hero-card {
  background: rgba(255, 255, 255, 0.96);
  color: #0f172a;
  border-radius: var(--radius-lg);
  padding: 1.15rem;
  box-shadow: var(--shadow-lg);
}

.hero-card h2 {
  margin: 0;
  font-size: 1.35rem;
}

.hero-card dl {
  margin: 1rem 0 0;
}

.hero-card div {
  display: flex;
  justify-content: space-between;
  gap: 0.8rem;
  border-bottom: 1px solid #e2e8f0;
  padding: 0.62rem 0;
}

.hero-card dt {
  color: var(--muted);
}

.hero-card dd {
  margin: 0;
  font-weight: 700;
}

.card-note {
  margin: 0.9rem 0 0;
  color: #334155;
}

.section {
  padding: 4rem 0;
}

.section-head h2 {
  margin: 0.45rem 0 0;
  font-size: clamp(1.6rem, 3vw, 2.3rem);
  letter-spacing: -0.02em;
}

.section-label {
  margin: 0;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: #64748b;
  font-weight: 800;
}

.feature-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.feature-card,
.speaker-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.05rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease;
}

.feature-card:hover,
.speaker-card:hover,
.timeline-item:hover,
.pricing-card:hover,
.gallery-card:hover {
  transform: translateY(-3px);
}

.feature-card h3,
.speaker-card h3 {
  margin: 0;
  font-size: 1.12rem;
}

.feature-card p,
.speaker-card p {
  margin: 0.62rem 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.schedule {
  background: #f8fbff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.timeline {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.9rem;
}

.timeline-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.05rem;
  transition: transform 0.2s ease;
}

.timeline-item time {
  color: #2563eb;
  text-transform: uppercase;
  font-size: 0.77rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.timeline-item h3 {
  margin: 0.45rem 0 0;
  font-size: 1.1rem;
}

.timeline-item p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  line-height: 1.65;
}

.timeline-item.highlighted {
  border-color: #fca5a5;
  background: #fff6f6;
}

.speakers-grid,
.pricing-grid,
.gallery-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.tickets {
  background: #f3f7ff;
}

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

.pricing-card,
.gallery-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 1.1rem;
  box-shadow: var(--shadow-md);
  transition: transform 0.2s ease;
}

.badge {
  margin: 0;
  display: inline-block;
  border-radius: 999px;
  background: #ffe5e5;
  color: #b42318;
  padding: 0.2rem 0.58rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-size: 0.72rem;
  font-weight: 700;
}

.pricing-card h3 {
  margin: 0.2rem 0 0;
}

.price {
  margin: 0.55rem 0;
  font-size: 2.2rem;
  font-weight: 800;
  letter-spacing: -0.03em;
}

.pricing-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--muted);
  line-height: 1.72;
}

.pricing-card.featured {
  border-color: #fca5a5;
}

.gallery-card {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.gallery-card figcaption {
  margin: 0;
  padding: 0.8rem 0.9rem;
  color: var(--muted);
}

.site-footer {
  background: #070b16;
  color: #dbeafe;
  padding-top: 2.2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr;
  gap: 1rem;
  padding-bottom: 1.1rem;
}

.footer-grid h2,
.footer-grid h3 {
  margin: 0;
}

.footer-grid p,
.footer-grid li,
.footer-grid a {
  color: #c7d8f9;
}

.footer-grid a {
  text-decoration: none;
}

.footer-grid a:hover,
.footer-grid a:focus-visible {
  color: #fff;
}

.footer-grid ul {
  margin: 0.65rem 0 0;
  padding-left: 1rem;
  line-height: 1.7;
}

.footer-bottom {
  border-top: 1px solid rgba(199, 216, 249, 0.24);
  min-height: 62px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
  font-size: 0.93rem;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 980px) {
  .hero-grid,
  .feature-grid,
  .timeline,
  .speakers-grid,
  .pricing-grid,
  .gallery-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 4rem;
  }
}

@media (max-width: 760px) {
  .menu-toggle {
    display: inline-block;
    margin-left: auto;
    border: 1px solid #d1d9e6;
    background: #fff;
    border-radius: 8px;
    padding: 0.5rem 0.72rem;
    font-weight: 700;
  }

  .install-btn {
    display: none;
  }

  nav {
    width: 100%;
    margin-left: 0;
    display: none;
  }

  nav.open {
    display: block;
    padding-bottom: 0.6rem;
  }

  nav ul {
    flex-direction: column;
    gap: 0.1rem;
  }

  nav a {
    display: block;
  }

  .nav-wrap {
    min-height: auto;
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 0.74rem 0;
  }

  .section {
    padding: 3.1rem 0;
  }
}