:root {
  --void: #07040f;
  --void-2: #10081c;
  --violet: #7c3aed;
  --cyan: #22d3ee;
  --pink: #f472b6;
  --text: #f4f0ff;
  --muted: #b8a8d4;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: Karla, sans-serif;
  background: var(--void);
  color: var(--text);
  line-height: 1.6;
  overflow-x: hidden;
}
h1, h2, h3, .logo strong, .bars b, .dial-ring strong {
  font-family: Teko, sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 0.95;
}
h1 { font-size: clamp(3rem, 8vw, 7rem); }
h2 { font-size: clamp(2rem, 4vw, 3.4rem); }
a { color: var(--cyan); }
button, input, textarea, select { font: inherit; color: inherit; }

#arc { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 0.45; }

header {
  position: sticky; top: 0; z-index: 40;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 24px;
  background: rgba(7, 4, 15, 0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(34, 211, 238, 0.25);
}
.logo { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--text); }
.bolt {
  width: 18px; height: 36px;
  background: var(--cyan);
  clip-path: polygon(40% 0, 100% 0, 60% 45%, 100% 45%, 0 100%, 40% 55%, 0 55%);
  animation: zap 1.8s infinite;
}
@keyframes zap { 50% { filter: drop-shadow(0 0 12px var(--cyan)); transform: translateY(2px); } }
.logo small { display: block; font-size: 10px; letter-spacing: 0.22em; color: var(--pink); }
nav { display: flex; flex-wrap: wrap; gap: 12px 16px; }
nav a { text-decoration: none; font-size: 13px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
nav a:hover { color: var(--cyan); }
.lang button {
  background: transparent; border: 1px solid var(--violet); color: var(--muted);
  padding: 6px 10px; cursor: pointer;
}
.lang button.is-active { background: var(--violet); color: #fff; }
.burger { display: none; background: var(--cyan); color: var(--void); border: 0; width: 42px; height: 42px; cursor: pointer; }
.head-tools { display: flex; align-items: center; gap: 10px; }

main { position: relative; z-index: 1; }
.spark {
  min-height: calc(100vh - 70px);
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 32px;
  align-items: center;
  padding: 48px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.volt { color: var(--pink); letter-spacing: 0.2em; font-size: 12px; text-transform: uppercase; margin-bottom: 16px; }
.lead { max-width: 58ch; color: var(--muted); margin: 20px 0 28px; font-size: 1.08rem; }
.spark-cta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.go {
  background: var(--cyan); color: var(--void); text-decoration: none;
  padding: 12px 22px; font-family: Teko, sans-serif; font-size: 1.3rem; letter-spacing: 0.08em;
  clip-path: polygon(0 0, 100% 0, 94% 100%, 0 100%);
}
.dial { display: grid; place-items: center; text-align: center; }
.dial-ring {
  width: min(280px, 70vw); height: min(280px, 70vw);
  border-radius: 50%;
  border: 2px solid var(--cyan);
  box-shadow: 0 0 40px rgba(34, 211, 238, 0.25), inset 0 0 40px rgba(124, 58, 237, 0.35);
  display: grid; place-content: center;
  transform: rotate(-8deg);
}
.dial-ring strong { font-size: 4.2rem; color: var(--cyan); }
.dial-ring span { color: var(--muted); font-size: 13px; }
.dial p { margin-top: 18px; transform: rotate(4deg); }

.bars {
  display: grid; grid-template-columns: repeat(4, 1fr);
  transform: skewY(-2deg);
  margin: 0 24px 48px;
}
.bars div {
  padding: 22px;
  background: linear-gradient(135deg, var(--void-2), #1a0b33);
  border-left: 3px solid var(--pink);
}
.bars b { display: block; font-size: 2.4rem; color: var(--cyan); }
.bars span { font-size: 13px; color: var(--muted); }

.cut, .grid-sec, .nodes, .pulse, .log, .crew, .faq-sec, .sub {
  padding: 72px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.cut { display: grid; grid-template-columns: 0.4fr 1fr; gap: 28px; }
.cut.invert { background: var(--void-2); max-width: none; padding: 72px 8vw; clip-path: polygon(0 4%, 100% 0, 100% 96%, 0 100%); }
.cut-head span { font-family: Teko, sans-serif; font-size: 5rem; color: var(--violet); display: block; line-height: 0.8; }
.cut-body p + p { margin-top: 14px; color: var(--muted); }

.intro { color: var(--muted); max-width: 70ch; margin: 12px 0 28px; }
.hex { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.hex article {
  padding: 24px;
  background: rgba(124, 58, 237, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.2);
  transform: skewX(-4deg);
}
.hex article > * { transform: skewX(4deg); }
.hex .wide { grid-column: 1 / -1; background: rgba(34, 211, 238, 0.08); }
.hex span { color: var(--pink); font-family: Teko, sans-serif; font-size: 1.4rem; }
.hex p { color: var(--muted); margin-top: 8px; }

.circuits { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.circuits article { padding: 22px; border-top: 3px solid var(--cyan); background: #0c0718; }
.circuits p { color: var(--muted); margin-top: 8px; }

.steps { margin-left: 20px; display: grid; gap: 10px; color: var(--muted); }

.pulse-grid, .crew-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.crew-grid { grid-template-columns: repeat(3, 1fr); }
.pulse-grid article, .crew-grid article {
  padding: 20px;
  background: var(--void-2);
  border-radius: 0 28px 0 28px;
}
.pulse-grid p, .crew-grid p { color: var(--muted); margin-top: 8px; font-size: 14px; }

.log-list { display: grid; gap: 0; }
.log-list article {
  display: grid;
  grid-template-columns: 90px 1fr 1.5fr;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px solid rgba(244, 114, 182, 0.25);
}
.log-list span { color: var(--cyan); font-family: Teko, sans-serif; font-size: 1.4rem; }
.log-list p { color: var(--muted); }

.faq details { border-bottom: 1px solid rgba(124, 58, 237, 0.4); padding: 8px 0; }
.faq summary { cursor: pointer; font-family: Teko, sans-serif; font-size: 1.5rem; letter-spacing: 0.04em; padding: 8px 0; }
.faq p { color: var(--muted); padding-bottom: 10px; }

.sub {
  background: linear-gradient(120deg, #1a0b33, #071018);
  max-width: none;
  padding: 72px 8vw;
  clip-path: polygon(0 0, 100% 6%, 100% 100%, 0 100%);
}
.sub-grid { display: grid; grid-template-columns: 0.8fr 1.2fr; gap: 28px; margin-top: 20px; }
address { font-style: normal; }
address strong { font-family: Teko, sans-serif; font-size: 2rem; display: block; margin-bottom: 10px; }
address p { margin-top: 8px; }
form { display: grid; gap: 10px; }
label { display: grid; gap: 4px; font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
input, textarea, select {
  background: transparent; border: 0; border-bottom: 1px solid var(--violet);
  padding: 10px 0; outline: none;
}
input:focus, textarea:focus { border-bottom-color: var(--cyan); }
form button {
  margin-top: 8px; background: var(--pink); color: var(--void); border: 0;
  padding: 12px 16px; cursor: pointer; font-family: Teko, sans-serif; font-size: 1.3rem; letter-spacing: 0.08em;
}
.ok { color: var(--cyan); }

footer {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 18px 24px; color: var(--muted); font-size: 13px;
  border-top: 1px solid rgba(34, 211, 238, 0.2);
}

@media (max-width: 1100px) {
  .spark, .cut, .hex, .circuits, .pulse-grid, .crew-grid, .sub-grid, .bars, .log-list article {
    grid-template-columns: 1fr 1fr;
  }
  .log-list article { grid-template-columns: 1fr; }
  .cut.invert { clip-path: none; }
}

@media (max-width: 820px) {
  nav {
    display: none; position: absolute; top: 64px; left: 0; right: 0;
    background: var(--void-2); flex-direction: column; padding: 16px;
  }
  nav.is-open { display: flex; }
  .burger { display: block; }
  .spark, .cut, .hex, .circuits, .pulse-grid, .crew-grid, .sub-grid, .bars {
    grid-template-columns: 1fr;
  }
  .bars { transform: none; }
  .hex article { transform: none; }
  .hex article > * { transform: none; }
}