:root {
  --bg: #07080f;
  --bg-2: #0c0e1a;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-2: rgba(255, 255, 255, 0.16);
  --text: #eef0ff;
  --muted: #9aa0bd;
  --violet: #8b5cf6;
  --violet-2: #a78bfa;
  --cyan: #22d3ee;
  --pink: #f472b6;
  --grad: linear-gradient(120deg, #a78bfa 0%, #8b5cf6 35%, #22d3ee 100%);
  --radius: 20px;
  --radius-sm: 12px;
  --shadow: 0 30px 80px -30px rgba(0, 0, 0, 0.7);
  --container: 1200px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -0.02em; }
p { margin: 0; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 6px; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 860px; }
.ico { width: 22px; height: 22px; flex: none; }

/* ---------- background ---------- */
.bg { position: fixed; inset: 0; z-index: -1; pointer-events: none; overflow: hidden; }
.bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 75%);
}
.orb { position: absolute; border-radius: 50%; filter: blur(90px); opacity: .55; animation: drift 22s ease-in-out infinite alternate; }
.orb-1 { width: 560px; height: 560px; background: #6d28d9; top: -180px; left: -120px; }
.orb-2 { width: 480px; height: 480px; background: #0891b2; top: 80px; right: -160px; opacity: .4; animation-delay: -6s; }
.orb-3 { width: 420px; height: 420px; background: #be185d; top: 900px; left: 40%; opacity: .18; animation-delay: -12s; }
@keyframes drift { to { transform: translate3d(60px, 40px, 0) scale(1.1); } }

/* ---------- header ---------- */
.header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  background: rgba(7, 8, 15, 0.6);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, background .3s;
}
.header.scrolled { border-bottom-color: var(--border); background: rgba(7, 8, 15, 0.82); }
.header-in { display: flex; align-items: center; gap: 24px; height: 72px; }
.logo { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.logo-mark svg { width: 32px; height: 32px; }
.logo-ai {
  margin-left: 6px; font-size: 11px; font-weight: 700; padding: 3px 7px; border-radius: 6px;
  background: var(--grad); color: #0b0b14; vertical-align: 3px; letter-spacing: .04em;
}
.nav { display: flex; gap: 28px; margin-left: auto; }
.nav a { color: var(--muted); font-size: 15px; font-weight: 500; transition: color .2s; }
.nav a:hover { color: var(--text); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.lang-switch { display: flex; padding: 3px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); }
.lang-switch a { font-size: 12px; font-weight: 600; padding: 5px 10px; border-radius: 999px; color: var(--muted); transition: all .2s; }
.lang-switch a:hover { color: var(--text); }
.lang-switch a.active { background: var(--surface-2); color: var(--text); box-shadow: inset 0 0 0 1px var(--border-2); }
.burger { display: none; background: none; border: 1px solid var(--border); border-radius: 10px; padding: 8px; cursor: pointer; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 15px 26px; border-radius: 999px; font-weight: 600; font-size: 16px;
  border: 0; cursor: pointer; transition: transform .2s, box-shadow .25s, background .25s, opacity .2s;
  white-space: nowrap;
}
.btn .ico { width: 18px; height: 18px; }
.btn-primary {
  background: var(--grad); color: #0a0a14;
  box-shadow: 0 10px 40px -10px rgba(139, 92, 246, .7), inset 0 1px 0 rgba(255,255,255,.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 50px -10px rgba(139, 92, 246, .9), inset 0 1px 0 rgba(255,255,255,.35); }
.btn-ghost { background: var(--surface); border: 1px solid var(--border-2); color: var(--text); }
.btn-ghost:hover { background: var(--surface-2); transform: translateY(-2px); }
.btn-sm { padding: 10px 18px; font-size: 14px; }
.btn-block { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; transform: none; }

/* ---------- hero ---------- */
.hero { padding: 72px 0 40px; }
.hero-in { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 7px 14px 7px 10px;
  border: 1px solid var(--border-2); border-radius: 999px; background: var(--surface);
  font-size: 13px; font-weight: 500; color: #cfd3ff;
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .35; } }
.hero h1 { font-size: clamp(36px, 5.4vw, 64px); font-weight: 800; margin: 22px 0 22px; letter-spacing: -0.035em; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.lead { font-size: clamp(17px, 1.6vw, 19px); color: var(--muted); max-width: 580px; }
.hero-btns { display: flex; flex-wrap: wrap; gap: 14px; margin: 34px 0 30px; }
.hero-points { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.hero-points li, .checks li { display: flex; align-items: center; gap: 12px; color: #c9cde6; font-size: 15px; }
.tick {
  width: 22px; height: 22px; border-radius: 50%; flex: none; display: grid; place-items: center;
  background: rgba(34, 211, 238, .12); color: var(--cyan);
}
.tick .ico { width: 14px; height: 14px; stroke-width: 2.4; }

.hero-visual { position: relative; }
.hero-visual::before {
  content: ''; position: absolute; inset: 10% 5%; background: var(--grad); filter: blur(70px); opacity: .35; border-radius: 40px; z-index: -1;
}
.float-chip {
  position: absolute; z-index: 2; display: inline-flex; align-items: center; gap: 8px;
  padding: 9px 14px; border-radius: 999px; font-size: 13px; font-weight: 600;
  background: rgba(18, 20, 36, .85); border: 1px solid var(--border-2);
  backdrop-filter: blur(10px); box-shadow: var(--shadow);
  animation: float 6s ease-in-out infinite;
}
.chip-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 10px var(--c); }
.chip-1 { top: -18px; left: -28px; }
.chip-2 { top: 38%; right: -34px; animation-delay: -2s; }
.chip-3 { bottom: -16px; left: 12%; animation-delay: -4s; }
@keyframes float { 50% { transform: translateY(-10px); } }

/* ---------- chat card ---------- */
.chat-card {
  position: relative;
  background: linear-gradient(180deg, rgba(22, 24, 42, .92), rgba(12, 13, 26, .92));
  border: 1px solid var(--border-2); border-radius: 24px; box-shadow: var(--shadow);
  overflow: hidden;
}
.chat-head { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.avatar { width: 40px; height: 40px; border-radius: 12px; display: grid; place-items: center; background: var(--grad); color: #0a0a14; }
.chat-name { font-weight: 700; font-size: 15px; }
.chat-status { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); }
.live { width: 7px; height: 7px; border-radius: 50%; background: #34d399; box-shadow: 0 0 8px #34d399; }
.chat-body { display: flex; flex-direction: column; gap: 12px; padding: 22px 20px; min-height: 330px; }
.msg {
  max-width: 84%; padding: 11px 15px; border-radius: 18px; font-size: 14.5px; line-height: 1.5;
  animation: pop .35s cubic-bezier(.2, .9, .3, 1.2) both;
}
.msg-user { align-self: flex-end; background: var(--surface-2); border: 1px solid var(--border); border-bottom-right-radius: 6px; }
.msg-bot { align-self: flex-start; background: linear-gradient(135deg, rgba(139, 92, 246, .28), rgba(34, 211, 238, .16)); border: 1px solid rgba(167, 139, 250, .3); border-bottom-left-radius: 6px; }
@keyframes pop { from { opacity: 0; transform: translateY(8px) scale(.97); } }
.typing { display: inline-flex; gap: 4px; padding: 14px 16px; }
.typing i { width: 6px; height: 6px; border-radius: 50%; background: var(--violet-2); animation: blink 1.2s infinite; }
.typing i:nth-child(2) { animation-delay: .2s; }
.typing i:nth-child(3) { animation-delay: .4s; }
@keyframes blink { 0%, 80%, 100% { opacity: .25; transform: translateY(0); } 40% { opacity: 1; transform: translateY(-3px); } }
.chat-input {
  display: flex; align-items: center; justify-content: space-between; margin: 0 16px 16px;
  padding: 12px 12px 12px 18px; border-radius: 14px; background: var(--surface); border: 1px solid var(--border);
  color: var(--muted); font-size: 14px;
}
.send { width: 34px; height: 34px; border-radius: 10px; display: grid; place-items: center; background: var(--grad); color: #0a0a14; }
.send .ico { width: 16px; height: 16px; }

/* ---------- stack marquee ---------- */
.stack { padding: 40px 0 20px; }
.stack-title { text-align: center; color: var(--muted); font-size: 13px; text-transform: uppercase; letter-spacing: .14em; margin-bottom: 20px; }
.marquee { overflow: hidden; mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); -webkit-mask-image: linear-gradient(90deg, transparent, #000 12%, #000 88%, transparent); }
.marquee-track { display: flex; gap: 12px; width: max-content; animation: marquee 45s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }
.stack-item { padding: 10px 18px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); color: #c9cde6; font-weight: 600; font-size: 14px; white-space: nowrap; }
@keyframes marquee { to { transform: translateX(calc(-50% - 6px)); } }

/* ---------- sections ---------- */
.section { padding: 110px 0; position: relative; }
.section-alt { background: linear-gradient(180deg, transparent, rgba(139, 92, 246, .05) 30%, rgba(34, 211, 238, .04) 70%, transparent); }
.section-head { text-align: center; max-width: 720px; margin: 0 auto 56px; }
.kicker {
  display: inline-block; font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .14em;
  background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 14px;
}
.section-head h2, .contact h2 { font-size: clamp(30px, 4vw, 46px); font-weight: 800; letter-spacing: -0.03em; }
.section-head p { color: var(--muted); font-size: 18px; margin-top: 16px; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  position: relative; padding: 30px; border-radius: var(--radius);
  background: var(--surface); border: 1px solid var(--border);
  transition: transform .3s, border-color .3s, background .3s;
  overflow: hidden;
}
.card::before {
  content: ''; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: radial-gradient(400px circle at var(--mx, 50%) var(--my, 0%), rgba(167, 139, 250, .55), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .3s;
}
.card::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(500px circle at var(--mx, 50%) var(--my, 0%), rgba(139, 92, 246, .09), transparent 40%);
  opacity: 0; transition: opacity .3s;
}
.card:hover { transform: translateY(-4px); background: var(--surface-2); }
.card:hover::before, .card:hover::after { opacity: 1; }
.card-ico {
  width: 52px; height: 52px; border-radius: 14px; display: grid; place-items: center; margin-bottom: 22px;
  background: linear-gradient(135deg, rgba(139, 92, 246, .22), rgba(34, 211, 238, .14));
  border: 1px solid rgba(167, 139, 250, .3); color: #d8ccff;
}
.card-ico .ico { width: 26px; height: 26px; }
.card h3, .why-item h3, .step h3 { font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.card p, .why-item p, .step p { color: var(--muted); font-size: 15px; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 20px; }
.tags span { font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: rgba(255,255,255,.05); border: 1px solid var(--border); color: #b9bedb; }

/* tabs / solutions */
.tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 36px; }
.tab {
  padding: 10px 20px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface);
  color: var(--muted); font-weight: 600; font-size: 15px; cursor: pointer; transition: all .2s;
}
.tab:hover { color: var(--text); border-color: var(--border-2); }
.tab.active { background: var(--grad); color: #0a0a14; border-color: transparent; box-shadow: 0 8px 30px -10px rgba(139, 92, 246, .8); }
.solution { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.solution-pane { display: none; }
.solution-pane.active { display: block; animation: fade .45s ease both; }
@keyframes fade { from { opacity: 0; transform: translateY(10px); } }
.solution-pane h3 { font-size: clamp(26px, 3vw, 34px); font-weight: 800; margin-bottom: 16px; }
.solution-pane p { color: var(--muted); font-size: 17px; margin-bottom: 24px; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.chat-card-wide .chat-body { min-height: 360px; }

/* steps */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; position: relative; }
.steps::before {
  content: ''; position: absolute; top: 34px; left: 8%; right: 8%; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(167, 139, 250, .5), rgba(34, 211, 238, .5), transparent);
}
.step { position: relative; padding: 0 6px; text-align: center; }
.step-num {
  position: relative; display: inline-grid; place-items: center; width: 68px; height: 68px; margin-bottom: 20px;
  border-radius: 50%; font-weight: 800; font-size: 20px;
  background: var(--bg-2); border: 1px solid var(--border-2);
  box-shadow: 0 0 0 6px var(--bg), 0 0 40px -10px rgba(139, 92, 246, .8);
}
.step-num::after { content: ''; position: absolute; inset: -1px; border-radius: 50%; padding: 1px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; }
.step h3 { font-size: 18px; }
.step-time { display: inline-block; margin-top: 14px; font-size: 12px; font-weight: 600; padding: 4px 10px; border-radius: 999px; background: rgba(34, 211, 238, .1); color: var(--cyan); }

/* why */
.why { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-item { padding: 28px; border-radius: var(--radius); background: var(--surface); border: 1px solid var(--border); }
.why-item h3 { font-size: 18px; }

/* faq */
.faq { display: grid; gap: 12px; }
.faq-item { border-radius: var(--radius-sm); background: var(--surface); border: 1px solid var(--border); transition: border-color .2s, background .2s; }
.faq-item[open] { border-color: rgba(167, 139, 250, .35); background: var(--surface-2); }
.faq-item summary {
  list-style: none; cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 16px;
  padding: 20px 24px; font-weight: 600; font-size: 17px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-plus { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; flex: none; background: var(--surface-2); transition: transform .3s, background .3s; }
.faq-plus .ico { width: 16px; height: 16px; }
.faq-item[open] .faq-plus { transform: rotate(45deg); background: var(--grad); color: #0a0a14; }
.faq-item p { padding: 0 24px 22px; color: var(--muted); }

/* contact */
.contact {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; padding: 56px; border-radius: 32px;
  background: linear-gradient(135deg, rgba(139, 92, 246, .14), rgba(34, 211, 238, .06) 60%, rgba(255,255,255,.02));
  border: 1px solid var(--border-2); position: relative; overflow: hidden;
}
.contact::before { content: ''; position: absolute; width: 400px; height: 400px; border-radius: 50%; background: #7c3aed; filter: blur(120px); opacity: .25; top: -150px; left: -100px; pointer-events: none; }
.contact-copy { position: relative; }
.contact-copy p { color: var(--muted); font-size: 18px; margin: 16px 0 28px; }
.form { position: relative; display: grid; gap: 16px; }
.field { display: grid; gap: 8px; }
.field span { font-size: 14px; font-weight: 600; color: #c9cde6; }
.field input, .field select, .field textarea {
  width: 100%; padding: 14px 16px; border-radius: var(--radius-sm); font: inherit; font-size: 15px;
  color: var(--text); background: rgba(7, 8, 15, .6); border: 1px solid var(--border-2);
  transition: border-color .2s, box-shadow .2s;
}
.field textarea { resize: vertical; min-height: 110px; }
.field select { appearance: none; -webkit-appearance: none; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%239aa0bd' stroke-width='1.8' stroke-linecap='round'%3E%3Cpath d='m1 1.5 5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 16px center; padding-right: 40px; }
.field select option { background: #12142a; }
.field input::placeholder, .field textarea::placeholder { color: #6b7091; }
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--violet-2); box-shadow: 0 0 0 4px rgba(139, 92, 246, .18); }
.field.invalid input { border-color: #f87171; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-note { font-size: 12px; color: #6b7091; text-align: center; }
.form-status { font-size: 15px; text-align: center; min-height: 1.5em; font-weight: 600; }
.form-status.ok { color: #34d399; }
.form-status.err { color: #f87171; }

/* footer */
.footer { border-top: 1px solid var(--border); padding: 48px 0; margin-top: 40px; }
.footer-in { display: grid; grid-template-columns: 1fr auto; gap: 24px 40px; align-items: center; }
.footer p { color: var(--muted); font-size: 14px; margin-top: 8px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 24px; }
.footer-nav a { color: var(--muted); font-size: 14px; }
.footer-nav a:hover { color: var(--text); }
.copy { grid-column: 1 / -1; padding-top: 24px; border-top: 1px solid var(--border); }
.logo-sm { font-size: 18px; }

/* reveal */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s cubic-bezier(.2, .7, .2, 1), transform .8s cubic-bezier(.2, .7, .2, 1); }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav { gap: 20px; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .why { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 40px; }
  .steps::before { display: none; }
}
@media (max-width: 920px) {
  .burger { display: grid; }
  .hide-sm { display: none; }
  .header-actions { margin-left: auto; }
  .nav {
    position: fixed; top: 72px; left: 0; right: 0; flex-direction: column; gap: 0; margin: 0;
    background: rgba(7, 8, 15, .97); border-bottom: 1px solid var(--border); padding: 8px 24px 20px;
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: all .25s;
  }
  .nav.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav a { padding: 14px 0; font-size: 17px; border-bottom: 1px solid var(--border); }
  .hero { padding-top: 48px; }
  .hero-in, .solution, .contact { grid-template-columns: 1fr; }
  .hero-in { gap: 64px; }
  .hero-visual { max-width: 520px; margin: 0 auto; width: 100%; }
  .chip-1 { left: -6px; }
  .chip-2 { right: -6px; }
  .contact { padding: 36px 24px; gap: 36px; }
  .section { padding: 84px 0; }
}
@media (max-width: 600px) {
  .container { padding: 0 18px; }
  .cards, .why { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; text-align: left; }
  .step { display: grid; grid-template-columns: 68px 1fr; column-gap: 18px; text-align: left; padding: 0; }
  .step-num { grid-row: span 3; margin: 0; }
  .step-time { justify-self: start; margin-top: 8px; }
  .hero-btns .btn { flex: 1 1 100%; }
  .footer-in { grid-template-columns: 1fr; }
  .lang-switch a { padding: 5px 8px; }
  .logo-text { font-size: 18px; }
  .chat-body { min-height: 300px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  html { scroll-behavior: auto; }
  .marquee-track { animation: none; flex-wrap: wrap; justify-content: center; width: auto; }
}
.nobr { white-space: nowrap; }