:root {
  --bg: #07111f;
  --bg-soft: #0d1830;
  --surface: rgba(13, 24, 48, 0.68);
  --surface-strong: rgba(16, 28, 56, 0.88);
  --card: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.14);
  --text: #e8efff;
  --muted: #a7b6d7;
  --primary: #6ee7ff;
  --secondary: #8b5cf6;
  --accent: #f59e0b;
  --success: #34d399;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.28);
  --radius: 22px;
  --radius-sm: 14px;
  --radius-xs: 12px;
  --max-width: 1180px;
  --nav-height: 84px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  overflow-x: hidden;
}

body.nav-open {
  overflow: hidden;
}

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

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

button,
a.btn {
  cursor: pointer;
}

.page-bg {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(110, 231, 255, 0.18), transparent 24%),
    radial-gradient(circle at 85% 12%, rgba(139, 92, 246, 0.2), transparent 22%),
    radial-gradient(circle at 70% 80%, rgba(245, 158, 11, 0.15), transparent 20%),
    linear-gradient(135deg, #06101e 0%, #0a1630 45%, #0d1324 100%);
  z-index: -3;
}

.noise {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,0.04) 0.5px, transparent 0.5px);
  background-size: 14px 14px;
  opacity: 0.15;
  z-index: -2;
  pointer-events: none;
}

#particles-canvas {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
}

.container {
  width: min(var(--max-width), calc(100% - 2rem));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(18px);
  background: rgba(5, 10, 20, 0.45);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav {
  min-height: var(--nav-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: #04101d;
  background: linear-gradient(135deg, var(--primary), #b3f6ff);
  box-shadow: 0 12px 30px rgba(110, 231, 255, 0.28);
}

.brand-text {
  display: grid;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 1rem;
}

.brand-text small {
  color: var(--muted);
  font-size: 0.8rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.1rem;
}

.nav-links a {
  font-size: 0.96rem;
  color: var(--muted);
  transition: 0.25s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-cta {
  padding: 0.8rem 1.05rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--border);
}

.nav-toggle {
  display: none;
  width: 50px;
  height: 50px;
  border: 1px solid var(--border);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.05);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle span {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 20px;
  transition: 0.3s ease;
}

.hero {
  min-height: calc(100vh - var(--nav-height));
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 2rem;
  padding: 4.5rem 0 2.5rem;
}

.eyebrow,
.section-tag,
.pill,
.tiny-pill,
.spotlight-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255,255,255,0.06);
  padding: 0.48rem 0.85rem;
  font-size: 0.83rem;
  color: var(--muted);
}

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--success);
  box-shadow: 0 0 0 6px rgba(52, 211, 153, 0.14);
}

.hero h1 {
  margin: 1rem 0 1rem;
  font-size: clamp(2.5rem, 6vw, 4.9rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.gradient-text {
  background: linear-gradient(135deg, #7ee7ff 0%, #c18dff 52%, #ffc56e 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-text,
.section-heading p,
.footer-copy,
.feature-card p,
.highlight-item p,
.timeline-card p,
.download-card p,
.step-card p,
.notice-card,
.faq-item p,
.cta-panel p,
.spotlight-card li {
  color: var(--muted);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin: 1.35rem 0;
}

.hero-badges span {
  border-radius: 999px;
  padding: 0.55rem 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255,255,255,0.05);
  font-size: 0.88rem;
  color: var(--text);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin: 1.7rem 0 1.9rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 50px;
  border-radius: 999px;
  padding: 0.95rem 1.3rem;
  border: 1px solid transparent;
  font-weight: 700;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

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

.btn-primary {
  background: linear-gradient(135deg, var(--primary), #7c8bff 55%, #bb8eff);
  color: #06101e;
  box-shadow: 0 16px 40px rgba(124, 139, 255, 0.25);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  border-color: var(--border);
}

.btn-block {
  width: 100%;
}

.meta-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.meta-row div {
  padding: 1rem 1rem 0;
  border-top: 1px solid rgba(255,255,255,0.12);
}

.meta-row strong,
.download-type,
.timeline-day,
.step-number,
.highlight-number {
  display: block;
  font-size: 0.84rem;
  color: var(--primary);
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.meta-row span {
  display: block;
  margin-top: 0.35rem;
  color: var(--muted);
}

.hero-visual {
  position: relative;
}

.glass-panel,
.feature-card,
.spotlight-card,
.timeline-card,
.download-card,
.notice-card,
.step-card,
.faq-item,
.cta-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.glass-panel {
  position: relative;
  padding: 1.35rem;
  border-radius: 28px;
  overflow: hidden;
}

.glass-panel::before {
  content: "";
  position: absolute;
  inset: auto -30% -40% auto;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(110, 231, 255, 0.22), transparent 62%);
}

.panel-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.pill.accent {
  color: var(--text);
  background: rgba(245, 158, 11, 0.12);
}

.tiny-pill {
  font-size: 0.76rem;
}

.system-map {
  position: relative;
  margin: 1.6rem auto 1.25rem;
  width: min(100%, 450px);
  aspect-ratio: 1;
}

.system-map::before,
.system-map::after {
  content: "";
  position: absolute;
  inset: 16%;
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,0.16);
}

.system-map::after {
  inset: 4%;
  animation: spin 18s linear infinite;
}

.centre-node {
  position: absolute;
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
  width: 110px;
  height: 110px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 1.4rem;
  color: #07111f;
  background: linear-gradient(135deg, #c0f7ff, #7ee7ff 42%, #ba9dff 100%);
  box-shadow: 0 0 0 14px rgba(126, 231, 255, 0.08), 0 0 45px rgba(126, 231, 255, 0.28);
}

.orbit {
  position: absolute;
  min-width: 100px;
  padding: 0.6rem 0.8rem;
  border-radius: 999px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.16);
  text-align: center;
  font-size: 0.86rem;
  color: var(--text);
}

.orbit-1 { top: 2%; left: 50%; transform: translateX(-50%); }
.orbit-2 { top: 22%; right: -2%; }
.orbit-3 { bottom: 18%; right: 2%; }
.orbit-4 { bottom: 2%; left: 50%; transform: translateX(-50%); }
.orbit-5 { bottom: 22%; left: -2%; }
.orbit-6 { top: 22%; left: -2%; }

.mini-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.mini-card {
  border-radius: 18px;
  padding: 1rem;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.12);
}

.mini-card strong {
  display: block;
  font-size: 1.8rem;
  margin-bottom: 0.25rem;
}

.mini-card span {
  color: var(--muted);
  font-size: 0.9rem;
}

.section {
  padding: 5rem 0;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-heading h2,
.cta-panel h2 {
  margin: 0.65rem 0 0.85rem;
  font-size: clamp(1.9rem, 3vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.feature-grid,
.downloads-grid,
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.feature-card,
.download-card,
.step-card {
  padding: 1.4rem;
  border-radius: var(--radius);
}

.icon-wrap,
.download-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, rgba(110,231,255,0.22), rgba(139,92,246,0.26));
  font-size: 1.5rem;
}

.feature-card h3,
.highlight-item h3,
.spotlight-card h3,
.timeline-card h3,
.download-card h3,
.step-card h3,
.cta-panel h2 {
  margin: 0 0 0.55rem;
}

.highlight-layout {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.25rem;
  align-items: start;
}

.highlight-list {
  display: grid;
  gap: 1rem;
}

.highlight-item,
.download-top {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.highlight-number {
  min-width: 48px;
  font-size: 1.1rem;
}

.spotlight-card {
  padding: 1.5rem;
  border-radius: var(--radius);
}

.spotlight-card ul {
  margin: 1rem 0 0;
  padding-left: 1.15rem;
}

.timeline {
  position: relative;
  display: grid;
  gap: 1.1rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, rgba(110,231,255,0.55), rgba(139,92,246,0.35), rgba(245,158,11,0.28));
}

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 1rem;
  align-items: start;
}

.timeline-dot {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  margin-top: 1rem;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 0 0 8px rgba(126, 231, 255, 0.08);
}

.timeline-card {
  padding: 1.35rem;
  border-radius: var(--radius);
}

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

.download-card {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.notice-card {
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border-radius: 18px;
}

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

.step-number {
  width: fit-content;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  background: rgba(126, 231, 255, 0.12);
  margin-bottom: 0.9rem;
}

.faq-list {
  display: grid;
  gap: 1rem;
}

.faq-item {
  border-radius: 18px;
  padding: 0.2rem 1.2rem;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem 0;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.35rem;
  color: var(--primary);
  transition: transform 0.25s ease;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item p {
  margin-top: 0;
  padding-bottom: 1rem;
}

.cta-panel {
  padding: 1.8rem;
  border-radius: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.site-footer {
  padding: 2rem 0 3rem;
  border-top: 1px solid rgba(255,255,255,0.08);
  background: rgba(0, 0, 0, 0.12);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.7fr 0.7fr;
  gap: 1.25rem;
  align-items: center;
}

.footer-brand {
  margin-bottom: 0.8rem;
}

.footer-links,
.footer-meta {
  display: grid;
  gap: 0.6rem;
  justify-items: start;
}

.footer-links a,
.footer-meta span {
  color: var(--muted);
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@media (max-width: 1080px) {
  .hero,
  .highlight-layout,
  .footer-grid {
    grid-template-columns: 1fr;
  }

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

  .meta-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 840px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: fixed;
    top: calc(var(--nav-height) + 0.35rem);
    left: 1rem;
    right: 1rem;
    padding: 1rem;
    border-radius: 22px;
    border: 1px solid var(--border);
    background: rgba(6, 12, 24, 0.96);
    box-shadow: var(--shadow);
    backdrop-filter: blur(18px);
    display: grid;
    gap: 0.35rem;
    transform-origin: top;
    transform: scaleY(0.94);
    opacity: 0;
    pointer-events: none;
    transition: 0.25s ease;
  }

  .nav-links.open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-links a {
    padding: 0.85rem 0.4rem;
  }

  .downloads-grid,
  .feature-grid,
  .steps-grid,
  .mini-stats {
    grid-template-columns: 1fr;
  }

  .cta-panel {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 620px) {
  .hero {
    padding-top: 3rem;
  }

  .container {
    width: min(var(--max-width), calc(100% - 1.2rem));
  }

  .section {
    padding: 4rem 0;
  }

  .timeline-item {
    grid-template-columns: 38px 1fr;
    gap: 0.7rem;
  }

  .timeline::before {
    left: 13px;
  }

  .timeline-dot {
    width: 28px;
    height: 28px;
  }

  .system-map {
    aspect-ratio: auto;
    min-height: 360px;
  }
}