/* ============ TOKENS ============ */
:root {
  --bg: #05070d;
  --bg-2: #0a0e18;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --text: #e6ebf5;
  --muted: #8a94a8;
  --cyan: #22d3ee;
  --indigo: #6366f1;
  --violet: #a78bfa;
  --green: #22c55e;
  --grad: linear-gradient(100deg, var(--cyan), var(--indigo) 60%, var(--violet));
  --font: 'Sora', 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, Consolas, monospace;
  --radius: 18px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; overflow-x: hidden; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  max-width: 100vw;
}
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
strong { color: #fff; font-weight: 600; }
::selection { background: var(--indigo); color: #fff; }

/* ============ FIXED LAYERS ============ */
#bg {
  position: fixed; inset: 0; width: 100%; height: 100%;
  z-index: 0; display: block;
}
.grain {
  position: fixed; inset: 0; z-index: 1; pointer-events: none; opacity: .05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
.cursor {
  position: fixed; top: 0; left: 0; width: 320px; height: 320px; margin: -160px 0 0 -160px;
  z-index: 1; pointer-events: none; border-radius: 50%;
  background: radial-gradient(circle, rgba(99, 102, 241, .16), transparent 65%);
  opacity: 0; transition: opacity .4s;
  will-change: transform;
}
.cursor.on { opacity: 1; }
.progress {
  position: fixed; top: 0; left: 0; height: 3px; width: 100%; z-index: 100;
  background: var(--grad); transform-origin: 0 50%; transform: scaleX(0);
}

main, .footer, .nav { position: relative; z-index: 2; }
main { counter-reset: sec; }

/* ============ LAYOUT ============ */
.wrap { width: min(1180px, 100% - 48px); margin-inline: auto; }
.wrap.narrow { width: min(820px, 100% - 48px); }
.section { padding: clamp(88px, 12vw, 160px) 0; position: relative; }
.kicker {
  font-family: var(--mono); font-size: 13px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 18px;
}
.kicker::before { counter-increment: sec; content: counter(sec, decimal-leading-zero) ' — '; }
h1, h2, h3 { line-height: 1.1; letter-spacing: -.02em; font-weight: 700; }
h2 { font-size: clamp(32px, 5vw, 58px); margin-bottom: 28px; font-weight: 700; }
h3 { font-size: 20px; }
.dim { color: var(--muted); font-weight: 300; }
.grad {
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent;
  display: inline-block;
}
.lead { font-size: clamp(17px, 1.6vw, 20px); color: var(--muted); max-width: 560px; }

/* ============ NAV ============ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 16px max(24px, calc((100% - 1180px) / 2));
  transition: transform .4s var(--ease);
}
/* The blurred bar lives on a pseudo-element: backdrop-filter on .nav itself would make the
   fixed mobile menu size itself to the header instead of the screen. */
.nav::before {
  content: ''; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: rgba(5, 7, 13, .7); backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid var(--border);
  opacity: 0; transition: opacity .3s;
}
.nav.scrolled::before { opacity: 1; }
.nav.hide { transform: translateY(-100%); }
.logo { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: .08em; font-size: 15px; }
.logo b { color: var(--cyan); font-weight: 700; }
.logo-by {
  font: 500 11px var(--mono); letter-spacing: .14em; color: var(--muted);
  padding-left: 12px; margin-left: 2px; border-left: 1px solid var(--border);
}
.logo-mark {
  width: 22px; height: 22px; border-radius: 50%;
  border: 2px solid var(--cyan); position: relative;
  box-shadow: 0 0 14px rgba(34, 211, 238, .5);
  animation: spin 8s linear infinite;
}
.logo-mark::after {
  content: ''; position: absolute; inset: 4px; border-radius: 50%; background: var(--indigo);
  box-shadow: 0 0 10px var(--indigo);
}
.nav-links { display: flex; gap: 28px; font-size: 14px; color: var(--muted); }
.nav-links a { position: relative; transition: color .2s; }
.nav-links a::after {
  content: ''; position: absolute; left: 0; bottom: -6px; height: 2px; width: 100%;
  background: var(--grad); transform: scaleX(0); transform-origin: 0 50%; transition: transform .3s var(--ease);
}
.nav-links a:hover, .nav-links a.active { color: #fff; }
.nav-links a:hover::after, .nav-links a.active::after { transform: scaleX(1); }
.lang {
  display: inline-flex; padding: 3px; border-radius: 999px; gap: 2px;
  background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(8px);
}
.lang button {
  font: 600 12px var(--mono); letter-spacing: .06em; color: var(--muted); cursor: pointer;
  padding: 6px 12px; border-radius: 999px; border: 0; background: transparent; transition: color .2s, background .3s, box-shadow .3s;
}
.lang button:hover { color: #fff; }
.lang button[aria-pressed="true"] { color: #fff; background: var(--grad); box-shadow: 0 4px 16px -4px rgba(99, 102, 241, .8); }
.burger { display: none; background: none; border: 0; width: 40px; height: 40px; cursor: pointer; position: relative; }
.burger span { position: absolute; left: 9px; right: 9px; height: 2px; background: #fff; transition: .3s var(--ease); }
.burger span:first-child { top: 15px; }
.burger span:last-child { top: 23px; }
.burger[aria-expanded="true"] span:first-child { top: 19px; transform: rotate(45deg); }
.burger[aria-expanded="true"] span:last-child { top: 19px; transform: rotate(-45deg); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 26px; border-radius: 999px; border: 1px solid transparent;
  font: 600 15px var(--font); color: #fff; cursor: pointer;
  background: var(--grad); position: relative; overflow: hidden;
  box-shadow: 0 10px 40px -10px rgba(99, 102, 241, .7);
  transition: box-shadow .3s, background .3s, border-color .3s;
  will-change: transform;
}
.btn::before {
  content: ''; position: absolute; inset: 0; background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,.35), transparent 70%);
  transform: translateX(-120%); transition: transform .7s var(--ease);
}
.btn:hover::before { transform: translateX(120%); }
.btn:hover { box-shadow: 0 14px 50px -8px rgba(34, 211, 238, .6); }
.btn-ghost { background: var(--surface); border-color: var(--border); box-shadow: none; backdrop-filter: blur(8px); }
.btn-ghost:hover { border-color: var(--cyan); box-shadow: 0 0 30px -6px rgba(34, 211, 238, .5); }
.btn-sm { padding: 9px 18px; font-size: 13px; }
.btn-lg { padding: 18px 36px; font-size: 17px; }

/* ============ HERO ============ */
.hero { min-height: 100svh; display: flex; align-items: center; padding: 120px 0 80px; position: relative; }
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 40px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: 13px; color: var(--muted);
  padding: 7px 14px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface);
  margin-bottom: 26px; backdrop-filter: blur(8px);
}
.pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 0 rgba(34,197,94,.7); animation: pulse 2s infinite; }
.hero h1 { font-size: clamp(40px, 6.4vw, 84px); margin-bottom: 26px; font-weight: 800; letter-spacing: -.035em; }
/* The rotating word never changes the layout: invisible copies of every word reserve the
   tallest size, and the visible one is taken out of the flow. */
.swap { position: relative; display: grid; }
.swap-ghost { grid-area: 1 / 1; visibility: hidden; }
.swap-live { position: absolute; left: 0; top: 0; width: 100%; display: block; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 44px; }
.cta-row.center { justify-content: center; }
.hero-stats { display: grid; grid-template-columns: repeat(4, auto); gap: 32px; justify-content: start; }
.hero-stats b { display: block; font-size: 32px; font-weight: 700; letter-spacing: -.02em; }
.hero-stats span { font-size: 13px; color: var(--muted); }

.hero-hud { position: relative; height: 480px; }
.hud-tag {
  position: absolute; font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--cyan);
  padding: 8px 14px; border: 1px solid rgba(34, 211, 238, .3); border-radius: 8px;
  background: rgba(5, 7, 13, .55); backdrop-filter: blur(10px);
  display: flex; align-items: center; gap: 8px;
  animation: float 6s ease-in-out infinite;
}
.hud-tag i { width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.t1 { top: 6%; left: 2%; }
.t2 { top: 48%; right: 0; animation-delay: -2s; }
.t3 { bottom: 6%; left: 10%; animation-delay: -4s; }

.scroll-hint {
  position: absolute; bottom: 28px; left: 50%; width: 26px; height: 44px; margin-left: -13px;
  border: 2px solid var(--border); border-radius: 14px; opacity: .8;
}
.scroll-hint span {
  position: absolute; top: 8px; left: 50%; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px;
  background: var(--cyan); animation: scrollDot 1.8s infinite;
}

/* ============ MARQUEE ============ */
.marquee {
  overflow: hidden; border-block: 1px solid var(--border);
  background: rgba(5, 7, 13, .6); backdrop-filter: blur(10px); padding: 20px 0; position: relative; z-index: 2;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent);
}
.marquee-track { display: flex; width: max-content; animation: marquee 40s linear infinite; }
.marquee-track span {
  font-family: var(--mono); font-size: 15px; color: var(--muted); padding: 0 32px; position: relative; white-space: nowrap;
}
.marquee-track span::after { content: '◆'; position: absolute; right: -6px; color: var(--indigo); font-size: 8px; top: 50%; transform: translateY(-50%); }

/* ============ CASE STUDY ============ */
.case-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: start; margin-top: 20px; }
.case-text p { color: var(--muted); margin-bottom: 18px; font-size: 17px; }
.ticks { margin-top: 26px; display: grid; gap: 12px; }
.ticks li { padding-left: 32px; position: relative; color: var(--text); font-size: 15px; }
.ticks li::before {
  content: ''; position: absolute; left: 0; top: 6px; width: 18px; height: 18px; border-radius: 50%;
  background: rgba(34, 211, 238, .15); border: 1px solid var(--cyan);
}
.ticks li::after {
  content: ''; position: absolute; left: 6px; top: 10px; width: 6px; height: 3px;
  border-left: 2px solid var(--cyan); border-bottom: 2px solid var(--cyan); transform: rotate(-45deg);
}
.case-cards { display: grid; gap: 16px; }
kbd {
  font-family: var(--mono); font-size: 12px; padding: 2px 8px; border-radius: 6px;
  background: var(--surface-2); border: 1px solid var(--border); border-bottom-width: 2px;
}

/* ============ TILT CARDS ============ */
.tilt {
  --rx: 0deg; --ry: 0deg; --mx: 50%; --my: 50%;
  position: relative; padding: 28px; border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02));
  border: 1px solid var(--border); backdrop-filter: blur(12px);
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: transform .25s var(--ease), border-color .3s;
  transform-style: preserve-3d; overflow: hidden;
}
.tilt::before {
  content: ''; position: absolute; inset: 0; pointer-events: none; opacity: 0; transition: opacity .3s;
  background: radial-gradient(360px circle at var(--mx) var(--my), rgba(99, 102, 241, .22), transparent 60%);
}
.tilt:hover { border-color: rgba(99, 102, 241, .5); }
.tilt:hover::before { opacity: 1; }
.tilt h3 { margin-bottom: 10px; transform: translateZ(30px); }
.tilt p { color: var(--muted); font-size: 15px; transform: translateZ(14px); }

/* ============ CAPABILITIES ============ */
.cap-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px; }
.ico {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(34, 211, 238, .18), rgba(99, 102, 241, .18));
  border: 1px solid rgba(34, 211, 238, .3); transform: translateZ(40px);
}
.ico svg { width: 24px; height: 24px; fill: none; stroke: var(--cyan); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

/* ============ DEMO ============ */
.demo-wrap { display: grid; grid-template-columns: .8fr 1.2fr; gap: 56px; align-items: center; }
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 30px; }
.chip {
  font: 500 14px var(--font); color: var(--muted); cursor: pointer;
  padding: 10px 18px; border-radius: 999px; background: var(--surface); border: 1px solid var(--border);
  transition: .25s var(--ease);
}
.chip:hover { color: #fff; border-color: var(--indigo); }
.chip.active { color: #fff; background: rgba(99, 102, 241, .25); border-color: var(--indigo); box-shadow: 0 0 24px -6px var(--indigo); }

.terminal-stage { perspective: 1400px; }
.terminal {
  border-radius: 16px; overflow: hidden; border: 1px solid var(--border);
  background: rgba(8, 11, 20, .82); backdrop-filter: blur(16px);
  box-shadow: 0 40px 100px -30px rgba(0, 0, 0, .8), 0 0 0 1px rgba(34, 211, 238, .06), 0 0 80px -30px rgba(99, 102, 241, .5);
  transform: rotateY(-8deg) rotateX(4deg); transition: transform .6s var(--ease);
}
.terminal-stage:hover .terminal { transform: rotateY(0) rotateX(0); }
.term-bar { display: flex; align-items: center; gap: 8px; padding: 14px 18px; border-bottom: 1px solid var(--border); background: rgba(255,255,255,.03); }
.dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.r { background: #ff5f57; } .dot.y { background: #febc2e; } .dot.g { background: #28c840; }
.term-title { font-family: var(--mono); font-size: 12px; color: var(--muted); margin-left: 10px; }
.term-state { margin-left: auto; font-family: var(--mono); font-size: 11px; letter-spacing: .12em; color: var(--muted); display: flex; align-items: center; gap: 7px; }
.term-state i { width: 7px; height: 7px; border-radius: 50%; background: var(--muted); }
.term-state[data-s="listening"] { color: var(--cyan); } .term-state[data-s="listening"] i { background: var(--cyan); box-shadow: 0 0 8px var(--cyan); }
.term-state[data-s="thinking"] { color: var(--violet); } .term-state[data-s="thinking"] i { background: var(--violet); box-shadow: 0 0 8px var(--violet); }
.term-state[data-s="speaking"] { color: var(--green); } .term-state[data-s="speaking"] i { background: var(--green); box-shadow: 0 0 8px var(--green); }
.wave { display: flex; align-items: center; justify-content: center; gap: 3px; height: 54px; padding: 0 20px; border-bottom: 1px solid var(--border); }
.wave span { flex: 1; max-width: 5px; height: 4px; border-radius: 3px; background: var(--grad); transition: height .12s linear, opacity .3s; opacity: .35; }
.term-body { padding: 22px; font-family: var(--mono); font-size: 13.5px; line-height: 1.75; height: 340px; overflow: hidden; display: flex; flex-direction: column; justify-content: flex-end; gap: 4px; }
.ln { animation: lineIn .35s var(--ease); white-space: pre-wrap; word-break: break-word; }
.ln .who { color: var(--muted); margin-right: 8px; }
.ln.user { color: #fff; } .ln.user .who { color: var(--cyan); }
.ln.ai { color: #c7d2fe; } .ln.ai .who { color: var(--indigo); }
.ln.tool { color: var(--green); } .ln.tool .who { color: var(--green); }
.ln.sys { color: var(--muted); }
.caret { display: inline-block; width: 8px; height: 15px; background: var(--cyan); vertical-align: -2px; margin-left: 2px; animation: blink 1s steps(2) infinite; }

/* ============ ARCHITECTURE STACK ============ */
.stack-stage { perspective: 1600px; margin: 70px 0 60px; display: flex; justify-content: center; }
.stack { position: relative; width: min(680px, 100%); height: 546px; transform-style: preserve-3d; transform: rotateX(50deg) rotateZ(-18deg); transition: transform .3s linear; }
.layer {
  position: absolute; left: 0; right: 0; height: 100px; border-radius: 16px; padding: 20px 26px;
  display: flex; align-items: center; gap: 20px;
  background: linear-gradient(135deg, rgba(34, 211, 238, .16), rgba(99, 102, 241, .22));
  border: 1px solid rgba(34, 211, 238, .35);
  box-shadow: 0 0 40px -12px rgba(34, 211, 238, .45), inset 0 0 30px rgba(99, 102, 241, .12);
  backdrop-filter: blur(6px);
  transition: transform .15s linear, opacity .3s;
}
.layer .n { font-family: var(--mono); font-size: 28px; font-weight: 500; color: var(--cyan); opacity: .9; }
.layer h3 { font-size: 20px; margin-bottom: 4px; }
.layer p { font-size: 13.5px; color: var(--muted); line-height: 1.45; }
.layer em { margin-left: auto; font-style: normal; font-family: var(--mono); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--cyan); padding: 4px 10px; border: 1px solid rgba(34, 211, 238, .35); border-radius: 999px; white-space: nowrap; }
.l1 { top: 450px; } .l2 { top: 300px; } .l3 { top: 150px; } .l4 { top: 0; }

.flow { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 10px; }
.node {
  font-family: var(--mono); font-size: 13px; padding: 12px 20px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border); backdrop-filter: blur(8px);
}
.node.hot { border-color: var(--cyan); color: var(--cyan); box-shadow: 0 0 30px -8px var(--cyan); }
.flow i { width: 34px; height: 2px; background: linear-gradient(90deg, var(--indigo), var(--cyan)); position: relative; overflow: hidden; }
.flow i::after { content: ''; position: absolute; top: 0; left: 0; width: 12px; height: 100%; background: #fff; animation: packet 1.6s linear infinite; }

/* ============ DOWNLOADS ============ */
.dl-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 18px; margin-top: 44px; }
.dl {
  display: flex; flex-direction: column; align-items: flex-start; gap: 10px; padding: 28px; border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(255,255,255,.06), rgba(255,255,255,.02)); border: 1px solid var(--border); backdrop-filter: blur(12px);
}
.dl:hover { border-color: rgba(34, 211, 238, .5); }
.dl .ico { margin-bottom: 8px; transform: none; }
.dl p { color: var(--muted); font-size: 15px; }
.dl-meta { font-family: var(--mono); font-size: 12px; letter-spacing: .06em; color: var(--cyan); }
.dl .btn { margin-top: 12px; }
.dl-note { margin-top: 26px; font-size: 13px; color: var(--muted); font-family: var(--mono); }
.dl-warn {
  display: flex; gap: 16px; align-items: flex-start; margin-top: 22px; padding: 20px 22px; border-radius: 14px;
  background: linear-gradient(160deg, rgba(250, 204, 21, .09), rgba(250, 204, 21, .02)); border: 1px solid rgba(250, 204, 21, .28);
}
.dl-warn svg { flex-shrink: 0; width: 22px; height: 22px; margin-top: 2px; stroke: #facc15; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.dl-warn p { margin: 0; font-size: 14.5px; line-height: 1.6; color: var(--text); }
.dl-warn strong { color: #fde68a; }

/* ============ PROCESS ============ */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 50px; counter-reset: s; position: relative; }
.steps::before { content: ''; position: absolute; top: 22px; left: 5%; right: 5%; height: 1px; background: linear-gradient(90deg, transparent, var(--indigo), var(--cyan), transparent); opacity: .6; }
.steps li { position: relative; padding-top: 0; }
.steps span {
  display: grid; place-items: center; width: 46px; height: 46px; border-radius: 50%; margin-bottom: 20px;
  background: var(--bg-2); border: 1px solid var(--cyan); color: var(--cyan);
  font-family: var(--mono); font-size: 14px; position: relative; box-shadow: 0 0 24px -6px var(--cyan);
}
.steps h3 { margin-bottom: 8px; }
.steps p { color: var(--muted); font-size: 15px; }

/* ============ FAQ ============ */
.faq { margin-top: 40px; display: grid; gap: 12px; }
.faq details { border: 1px solid var(--border); border-radius: 14px; background: var(--surface); backdrop-filter: blur(10px); transition: border-color .3s, background .3s; }
.faq details[open] { border-color: rgba(99, 102, 241, .5); background: rgba(99, 102, 241, .07); }
.faq summary { cursor: pointer; padding: 20px 24px; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; font-size: 24px; color: var(--cyan); transition: transform .3s var(--ease); font-weight: 300; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { padding: 0 24px 22px; color: var(--muted); }

/* ============ CTA / FOOTER ============ */
.cta { padding: clamp(100px, 14vw, 180px) 0; text-align: center; position: relative; }
.cta h2 { font-size: clamp(36px, 6vw, 76px); margin-bottom: 20px; }
.cta .lead { margin-inline: auto; }
.lead-form { max-width: 640px; margin: 0 auto; text-align: left; display: grid; gap: 16px; padding: 30px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--surface); backdrop-filter: blur(10px); }
.lead-form .lead-or { text-align: center; color: var(--muted); font-size: 15px; margin-bottom: 4px; }
.lf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.lead-form label { display: grid; gap: 8px; font-size: 13px; color: var(--muted); font-family: var(--mono); letter-spacing: .02em; }
.lead-form input, .lead-form textarea, .lead-form select { width: 100%; font: 15px/1.5 var(--font); color: var(--text); background: rgba(5, 7, 13, .6); border: 1px solid var(--border); border-radius: 12px; padding: 12px 14px; outline: none; transition: border-color .2s, box-shadow .2s; }
.lead-form textarea { resize: vertical; min-height: 110px; }
.lead-form select option { background: #0b0e17; }
.lead-form input:focus, .lead-form textarea:focus, .lead-form select:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(34, 211, 238, .15); }
.lead-form .lf-budget { max-width: 260px; }
.lead-form .btn { justify-self: start; }
.lead-form .btn[disabled] { opacity: .6; pointer-events: none; }
.lf-hp { position: absolute !important; left: -9999px; width: 1px; height: 1px; opacity: 0; }
.lf-status { min-height: 1.4em; font-size: 14px; color: var(--muted); }
.lf-status.ok { color: var(--green); } .lf-status.err { color: #f87171; }
@media (max-width: 620px) { .lf-row { grid-template-columns: 1fr; } .lead-form { padding: 20px; } .lead-form .btn { justify-self: stretch; } }
.footer { border-top: 1px solid var(--border); padding: 28px 0; font-size: 13px; color: var(--muted); background: rgba(5, 7, 13, .7); backdrop-filter: blur(10px); }
.foot-row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }

/* ============ REVEAL ============ */
.reveal { opacity: 0; transform: translateY(36px); transition: opacity .9s var(--ease), transform .9s var(--ease); transition-delay: calc(var(--d, 0) * 110ms); }
.reveal.in { opacity: 1; transform: none; }
.tilt.reveal.in {
  transform: perspective(900px) rotateX(var(--rx)) rotateY(var(--ry));
  transition: opacity .9s var(--ease), transform .25s var(--ease), border-color .3s;
  transition-delay: calc(var(--d, 0) * 110ms), 0s, 0s;
}

/* ============ KEYFRAMES ============ */
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(34,197,94,0); } 100% { box-shadow: 0 0 0 0 rgba(34,197,94,0); } }
@keyframes float { 50% { transform: translateY(-12px); } }
@keyframes scrollDot { 0% { opacity: 0; transform: translateY(0); } 30% { opacity: 1; } 100% { opacity: 0; transform: translateY(16px); } }
@keyframes marquee { to { transform: translateX(-50%); } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes lineIn { from { opacity: 0; transform: translateY(8px); } }
@keyframes packet { from { transform: translateX(-14px); } to { transform: translateX(40px); } }

/* ============ RESPONSIVE ============ */
.is-ru .hero h1 { font-size: clamp(34px, 5.2vw, 68px); }
.is-ru h2 { font-size: clamp(28px, 4.4vw, 50px); }
@media (max-width: 1120px) {
  .nav .btn-sm { display: none; }
  .nav-links { gap: 20px; }
}
@media (max-width: 1000px) {
  .hero-grid, .case-grid, .demo-wrap { grid-template-columns: 1fr; }
  .hero-hud { display: none; }
  .cap-grid { grid-template-columns: 1fr 1fr; }
  .steps { grid-template-columns: 1fr 1fr; gap: 36px 20px; }
  .steps::before { display: none; }
  .hero-stats { grid-template-columns: repeat(2, auto); gap: 24px 40px; }
  .terminal { transform: none; }
}
@media (max-width: 820px) {
  .nav-links {
    position: fixed; inset: 0; width: auto; flex-direction: column; align-items: center; justify-content: center; gap: 26px;
    padding: 90px 32px 48px; background: rgba(5, 7, 13, .97); backdrop-filter: blur(20px);
    font-size: 22px; text-align: center;
    opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(-12px);
    transition: opacity .3s, transform .4s var(--ease), visibility 0s .4s;
  }
  .nav-links.open { opacity: 1; visibility: visible; pointer-events: auto; transform: none; transition-delay: 0s; }
  .logo, .lang { position: relative; z-index: 2; }   /* stay visible above the open menu */
  .burger { display: block; z-index: 2; }
  html.menu-open { overflow: hidden; }
  .nav { justify-content: space-between; }
  .lang { margin-left: auto; }
  .stack { transform-origin: 50% 0; }
  .stack-stage { margin: 30px 0 10px; height: 310px; }
  .layer { padding: 14px 16px; }
  .layer p, .layer em { display: none; }
}
@media (max-width: 460px) { .logo-by { display: none; } .is-ru .hero h1 { font-size: 32px; } }
@media (max-width: 620px) {
  .wrap { width: calc(100% - 32px); }
  .cap-grid, .steps { grid-template-columns: 1fr; }
  .hero { padding-top: 100px; }
  .hero h1 { font-size: 40px; }
  .term-body { height: 300px; font-size: 12.5px; }
  .foot-row { flex-direction: column; }
  .flow i { display: none; }
  .flow { gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .marquee-track { animation: none; }
}
@media (hover: none) { .cursor { display: none; } }

.no-webgl body { background: radial-gradient(60% 50% at 75% 20%, rgba(99,102,241,.25), transparent), radial-gradient(50% 40% at 20% 80%, rgba(34,211,238,.15), transparent), var(--bg); }
.no-webgl #bg { display: none; }