* { box-sizing: border-box; }

:root {
  --bg: #05060b;
  --bg-alt: #0b1020;
  --panel: rgba(15, 22, 38, 0.82);
  --green: #41e9a2;
  --green-soft: rgba(65, 233, 162, 0.2);
  --text: #eaf2ff;
  --muted: #9fb1d1;
  --danger: #7dd7ff;
}

html,
body {
  margin: 0;
  padding: 0;
  background:
    radial-gradient(circle at 20% 10%, rgba(65, 233, 162, 0.12), transparent 30%),
    radial-gradient(circle at 80% 30%, rgba(85, 120, 255, 0.12), transparent 20%),
    var(--bg);
  color: var(--text);
  font-family: Inter, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

.noise::before,
.noise {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.015) 0,
    rgba(255, 255, 255, 0.015) 1px,
    transparent 1px,
    transparent 3px
  );
  z-index: 0;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
  padding: 0.9rem 2rem;
  border-bottom: 1px solid rgba(65, 233, 162, 0.25);
  background: rgba(5, 6, 11, 0.85);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.08rem;
}

.brand img { width: 28px; height: 28px; }

.nav {
  display: flex;
  gap: 1.1rem;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.88rem;
  text-transform: uppercase;
}

.nav a:hover { color: var(--green); }

.lang-switch { display: flex; gap: 0.5rem; }

.lang-pill {
  border: 1px solid rgba(65, 233, 162, 0.35);
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  padding: 0.35rem 0.7rem;
  cursor: pointer;
}

.lang-pill.active {
  background: var(--green-soft);
  color: var(--text);
  border-color: var(--green);
}

main {
  max-width: 1100px;
  margin: 1.2rem auto 4rem;
  padding: 0 1rem;
  position: relative;
  z-index: 1;
}

.hero {
  margin-top: 1.5rem;
  border: 1px solid rgba(65, 233, 162, 0.25);
  border-radius: 20px;
  padding: 2.2rem;
  background: linear-gradient(125deg, rgba(65, 233, 162, 0.06), transparent 30%), var(--panel);
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 2rem;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -20% -45% -20%;
  height: 180px;
  background: radial-gradient(ellipse at center, rgba(65, 233, 162, 0.35), transparent 70%);
  filter: blur(14px);
}

.hero-visual {
  min-height: 360px;
  border-radius: 14px;
  background:
    linear-gradient(180deg, rgba(2, 12, 25, 0.7), rgba(2, 12, 25, 0.93)),
    radial-gradient(circle at 40% 20%, rgba(65, 233, 162, 0.25), transparent 60%),
    linear-gradient(90deg, rgba(13, 25, 47, 0.65) 1px, transparent 1px),
    linear-gradient(rgba(13, 25, 47, 0.65) 1px, transparent 1px);
  background-size: auto, auto, 34px 34px, 34px 34px;
  position: relative;
  overflow: hidden;
}

.hero-visual .city-grid {
  position: absolute;
  inset: 1rem;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 1fr;
  gap: 0.65rem;
}

.hero-visual .city-grid span {
  border: 1px solid rgba(127, 196, 255, 0.25);
  border-radius: 4px;
  background: linear-gradient(180deg, rgba(18, 34, 65, 0.25), rgba(6, 11, 28, 0.15));
}

.hero-visual .node {
  width: 0.8rem;
  height: 0.8rem;
  border-radius: 999px;
  position: absolute;
  background: var(--green);
  box-shadow: 0 0 18px rgba(65, 233, 162, 0.8);
}

.hero-visual .core { top: 40%; left: 44%; }
.hero-visual .n2 { top: 25%; left: 62%; }
.hero-visual .n3 { top: 67%; left: 34%; }
.hero-visual .n4 { top: 55%; left: 66%; }

.hero-visual .flow-line {
  position: absolute;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, transparent, var(--green), transparent);
  opacity: 0.5;
}

.hero-visual .l1 { width: 160px; top: 38%; left: 44%; transform-origin: left; transform: rotate(38deg); }
.hero-visual .l2 { width: 120px; top: 62%; left: 45%; transform-origin: left; transform: rotate(-28deg); }

.hero-content h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4rem);
  letter-spacing: 0.11rem;
}

.hero-sub {
  color: var(--muted);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
}

.eyebrow {
  color: var(--green);
  letter-spacing: 0.12rem;
  margin: 0 0 0.55rem;
  font-size: 0.86rem;
  text-transform: uppercase;
}

.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.2rem; }

.btn {
  border-radius: 999px;
  padding: 0.75rem 1.3rem;
  text-decoration: none;
  color: #0a121e;
  font-weight: 700;
  display: inline-block;
}

.btn-primary {
  background: linear-gradient(90deg, #5affbf, #3dbe96);
}

.btn-outline {
  border: 1px solid rgba(90, 255, 191, 0.5);
  color: var(--text);
  background: transparent;
}

.btn.full { width: fit-content; display: inline-block; }

.content {
  margin-top: 1.2rem;
  border: 1px solid rgba(127, 196, 255, 0.25);
  border-radius: 16px;
  padding: 1.4rem;
  background: var(--panel);
}

.card {
  backdrop-filter: blur(6px);
}

.content h2, .content h3 { margin-top: 0; }

.flow {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.7rem;
}

.flow article {
  background: rgba(4, 8, 16, 0.75);
  border: 1px solid rgba(65, 233, 162, 0.2);
  border-radius: 10px;
  padding: 0.7rem;
  text-transform: uppercase;
  color: var(--text);
  font-size: 0.84rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.chips {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.chips span {
  border: 1px solid rgba(127, 196, 255, 0.25);
  padding: 0.5rem 0.7rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.lead { color: var(--text); font-size: 1.02rem; }

ul { margin: 0.8rem 0 0.2rem 1.2rem; }

.fine {
  color: var(--muted);
  font-size: 0.92rem;
}

.roadmap {
  margin-top: 0.8rem;
  display: grid;
  gap: 0.65rem;
}

.roadmap div {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-left: 3px solid var(--green);
  padding: 0.6rem;
  background: rgba(4, 10, 22, 0.75);
}

.roadmap span { color: var(--green); font-weight: 600; }

.faq-item { border-top: 1px dashed rgba(127, 196, 255, 0.22); padding-top: 0.85rem; }

.faq-item + .faq-item { margin-top: 0.8rem; }

footer {
  max-width: 1100px;
  margin: 2.2rem auto 2rem;
  border-top: 1px solid rgba(127, 196, 255, 0.25);
  padding: 1rem 1rem 0;
}

.links { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 0.6rem; }
.links a { color: var(--muted); font-size: 0.88rem; text-decoration: none; }
.links a:hover { color: var(--green); }

@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; padding: 1.5rem; }
  .topbar { padding: 0.9rem 1rem; }
  .nav { display: none; }
}

@media (max-width: 480px) {
  .topbar { gap: 0.5rem; }
  .brand span { font-size: 0.95rem; }
  .hero { padding: 1rem; }
  .hero-visual { min-height: 250px; }
  .hero-content .hero-actions { flex-direction: column; }
  .hero-content h1 { font-size: 2rem; }
  .content { padding: 1rem; }
  .btn { width: 100%; text-align: center; }
}