:root {
  --bg: #07080d;
  --bg-soft: rgba(255, 255, 255, 0.05);
  --panel: rgba(14, 16, 24, 0.72);
  --panel-strong: rgba(15, 18, 29, 0.92);
  --text: #f5f7fb;
  --muted: #a9b1c7;
  --line: rgba(255, 255, 255, 0.09);
  --accent: #8b5cf6;
  --accent-soft: rgba(139, 92, 246, 0.22);
  --accent-2: #22d3ee;
  --accent-3: #f472b6;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
  --radius: 28px;
  --radius-sm: 18px;
  --max: 1180px;
}

* { 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:
    radial-gradient(circle at top left, rgba(139, 92, 246, 0.18), transparent 30%),
    radial-gradient(circle at 80% 10%, rgba(34, 211, 238, 0.12), transparent 24%),
    var(--bg);
  min-height: 100vh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button, a { -webkit-tap-highlight-color: transparent; }
button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 0;
  cursor: pointer;
}

.container {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at center, black 48%, transparent 100%);
  pointer-events: none;
}

.bg-orb {
  position: fixed;
  border-radius: 999px;
  filter: blur(90px);
  pointer-events: none;
  opacity: 0.85;
}

.orb-a {
  width: 320px;
  height: 320px;
  background: rgba(139, 92, 246, 0.3);
  top: 60px;
  right: -60px;
}

.orb-b {
  width: 280px;
  height: 280px;
  background: rgba(34, 211, 238, 0.16);
  left: -60px;
  bottom: 120px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0 10px;
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.brand-mark {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 6px rgba(139, 92, 246, 0.14);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav a:hover,
.footer-link:hover {
  color: var(--text);
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.07);
}

.lang-button {
  min-width: 48px;
  height: 34px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.06em;
  transition: background .2s ease, color .2s ease, transform .2s ease;
}

.lang-button:hover {
  color: var(--text);
  transform: translateY(-1px);
}

.lang-button.active {
  color: white;
  background: linear-gradient(135deg, rgba(139,92,246,0.95), rgba(34,211,238,0.9));
  box-shadow: 0 8px 22px rgba(105, 83, 238, 0.28);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.18fr) minmax(320px, 0.92fr);
  gap: 28px;
  padding: 72px 0 40px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: #d5d9ea;
  opacity: 0.9;
}

.eyebrow::before {
  content: "";
  width: 24px;
  height: 1px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
}

h1, h2, h3, p { margin: 0; }

h1 {
  font-size: clamp(2.8rem, 5vw, 5.1rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
  margin-top: 18px;
  max-width: 12ch;
}

.lead {
  margin-top: 24px;
  font-size: 1.08rem;
  line-height: 1.72;
  color: var(--muted);
  max-width: 64ch;
}

.hero-actions {
  display: flex;
  gap: 14px;
  margin-top: 30px;
  flex-wrap: wrap;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 20px;
  border-radius: 999px;
  font-weight: 600;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.button:hover { transform: translateY(-1px); }

.button-primary {
  background: linear-gradient(135deg, var(--accent), #6d6bf3 70%, var(--accent-2));
  color: white;
  box-shadow: 0 16px 40px rgba(106, 77, 224, 0.35);
}

.button-secondary {
  border: 1px solid var(--line);
  background: rgba(255,255,255,0.03);
  color: var(--text);
}

.hero-badges {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.hero-badges li {
  padding: 10px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
  color: #d8deef;
  font-size: 0.94rem;
}

.glass {
  background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow);
  backdrop-filter: blur(20px);
}

.glass-lite {
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0.035));
  border: 1px solid rgba(255,255,255,0.07);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.05);
}

.hero-panel {
  border-radius: var(--radius);
  padding: 22px;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 22px;
}

.panel-topline {
  display: flex;
  gap: 8px;
}

.panel-topline span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(255,255,255,0.22);
}

.system-card {
  border-radius: 24px;
  padding: 28px;
  background: linear-gradient(180deg, rgba(13, 16, 24, 0.92), rgba(12, 15, 25, 0.72));
  border: 1px solid rgba(255,255,255,0.06);
}

.signal-card__label {
  color: #d4daf0;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.system-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: stretch;
  gap: 14px;
  margin-top: 22px;
}

.system-node {
  position: relative;
  min-height: 188px;
  padding: 20px;
  border-radius: 22px;
  overflow: hidden;
  display: grid;
  align-content: start;
  grid-template-rows: auto 1fr;
  gap: 12px;
  border: 1px solid rgba(255,255,255,0.09);
}

.system-node::before {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.9;
  background: radial-gradient(circle at top right, rgba(255,255,255,0.16), transparent 35%);
  pointer-events: none;
}

.system-node strong,
.system-node span {
  position: relative;
  z-index: 1;
}

.system-node strong {
  display: block;
  max-width: 100%;
  font-size: clamp(1.02rem, 1.2vw, 1.34rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  overflow-wrap: break-word;
}

.system-node span {
  max-width: 100%;
  color: rgba(245, 247, 251, 0.84);
  line-height: 1.5;
  font-size: 0.9rem;
  overflow-wrap: break-word;
}

.system-node-prosthesis {
  background: linear-gradient(135deg, rgba(139,92,246,0.28), rgba(139,92,246,0.08));
}

.system-node-app {
  background: linear-gradient(135deg, rgba(34,211,238,0.24), rgba(34,211,238,0.08));
}

.system-node-server {
  background: linear-gradient(135deg, rgba(244,114,182,0.22), rgba(139,92,246,0.08));
}

.mini-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.mini-stat {
  min-height: 178px;
  padding: 22px;
  border-radius: 24px;
  display: grid;
  align-content: start;
  grid-template-rows: auto auto 1fr;
  gap: 8px;
  background: linear-gradient(135deg, rgba(139,92,246,0.22), rgba(34,211,238,0.1));
  border: 1px solid rgba(255,255,255,0.08);
}

.mini-stat strong {
  display: block;
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
  color: #ffffff;
}

.mini-stat em {
  display: block;
  margin-top: 0;
  font-style: normal;
  font-size: 1rem;
  line-height: 1.35;
  color: #edf1ff;
}

.mini-stat span {
  display: block;
  margin-top: 6px;
  color: rgba(219, 226, 244, 0.86);
  font-size: 0.93rem;
  line-height: 1.55;
}

.mini-stat-highlight {
  background: linear-gradient(135deg, rgba(139,92,246,0.22), rgba(34,211,238,0.1));
}

.section {
  padding: 72px 0 0;
}

.section-heading {
  display: grid;
  gap: 16px;
  max-width: 780px;
}

.section-heading h2 {
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  max-width: 16ch;
}

.section-heading p {
  color: var(--muted);
  line-height: 1.72;
  font-size: 1.03rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.feature-card,
.stack-card,
.try-card {
  border-radius: 24px;
  padding: 24px;
}

.feature-card,
.stack-card {
  min-height: 220px;
}

.feature-card h3,
.stack-card h3,
.try-card h3 {
  font-size: 1.25rem;
  letter-spacing: -0.03em;
  margin-top: 18px;
}

.feature-card p,
.stack-card p {
  margin-top: 14px;
  color: var(--muted);
  line-height: 1.7;
}

.icon-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 0 10px rgba(139,92,246,0.12);
}

.stack-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
}

.stack-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.stack-card {
  background: linear-gradient(180deg, rgba(11, 14, 24, 0.92), rgba(12, 15, 25, 0.74));
}

.stack-index {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #d5daf0;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
}

.benefit-shell {
  border-radius: 32px;
  padding: 32px;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 28px;
}

.benefit-shell h2 {
  font-size: clamp(2rem, 3vw, 2.8rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-top: 18px;
}

.benefit-list {
  display: grid;
  gap: 16px;
}

.benefit-list div {
  padding: 20px 22px;
  border-radius: 22px;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.06);
}

.benefit-list strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 8px;
}

.benefit-list span {
  color: var(--muted);
  line-height: 1.6;
}

.try-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.try-card {
  min-height: 100%;
}

.try-card-wide {
  grid-column: span 7;
}

.try-card:not(.try-card-wide):not(.try-card-full) {
  grid-column: span 5;
}

.try-card-full {
  grid-column: 1 / -1;
}

.try-card-head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 22px;
}

.try-tag {
  display: inline-flex;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.06);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #d6dcf1;
}

.resource-list,
.repo-grid {
  display: grid;
  gap: 14px;
}

.repo-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.resource-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 92px;
  padding: 18px 20px;
  border-radius: 22px;
  background: rgba(255,255,255,0.035);
  border: 1px solid rgba(255,255,255,0.06);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}

.resource-link:hover {
  transform: translateY(-2px);
  border-color: rgba(139,92,246,0.34);
  background: linear-gradient(135deg, rgba(139,92,246,0.1), rgba(34,211,238,0.06));
}

.resource-link span {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.resource-link strong {
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.resource-link small {
  color: var(--muted);
  line-height: 1.5;
  font-size: 0.92rem;
}

.resource-link i {
  font-style: normal;
  color: #e5e9f7;
  font-size: 1.2rem;
}

.footer {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  padding: 36px 0 48px;
}

.footer p {
  margin-top: 10px;
  color: var(--muted);
}

.footer-link {
  color: var(--muted);
  font-weight: 600;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s ease, transform .7s ease;
}

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

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

  .hero-panel {
    min-height: auto;
  }

  .feature-grid,
  .stack-cards,
  .repo-grid {
    grid-template-columns: 1fr 1fr;
  }

  .benefit-shell {
    grid-template-columns: 1fr;
  }

  .try-card-wide,
  .try-card:not(.try-card-wide):not(.try-card-full) {
    grid-column: span 6;
  }
}

@media (max-width: 840px) {
  .site-header {
    align-items: flex-start;
    gap: 16px;
    flex-direction: column;
  }

  .header-actions {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
  }

  .nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .hero {
    padding-top: 48px;
  }

  h1,
  .section-heading h2,
  .benefit-shell h2 {
    max-width: none;
  }

  .system-grid {
    grid-template-columns: 1fr;
  }

  .mini-stats,
  .feature-grid,
  .stack-cards,
  .repo-grid {
    grid-template-columns: 1fr;
  }

  .try-card-wide,
  .try-card:not(.try-card-wide):not(.try-card-full),
  .try-card-full {
    grid-column: 1 / -1;
  }

  .feature-card,
  .stack-card,
  .mini-stat {
    min-height: auto;
  }

  .system-node {
    min-height: 0;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(calc(100% - 24px), var(--max));
  }

  .hero-panel,
  .system-card,
  .benefit-shell,
  .feature-card,
  .stack-card,
  .try-card {
    padding: 20px;
  }

  .mini-stats {
    grid-template-columns: 1fr;
  }

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