:root {
  --bg: #070B14;
  --bg-2: #0A1020;
  --surface: #0E1524;
  --surface-2: #131C30;
  --line: rgba(148, 163, 184, 0.14);
  --line-strong: rgba(148, 163, 184, 0.28);
  --text: #E6EDF7;
  --muted: #94A3B8;
  --cyan: #22D3EE;
  --blue: #3B82F6;
  --violet: #8B5CF6;
  --grad: linear-gradient(90deg, #22D3EE 0%, #3B82F6 55%, #8B5CF6 100%);
  --radius: 16px;
  --head: "Plus Jakarta Sans", "Segoe UI", Arial, sans-serif;
  --body: "Inter", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 72px; }
body {
  margin: 0;
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}
img, svg { max-width: 100%; }
a { color: var(--cyan); }
h1, h2, h3 { font-family: var(--head); color: #fff; line-height: 1.15; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.3rem, 5vw, 3.8rem); letter-spacing: -0.03em; font-weight: 800; }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.4rem); letter-spacing: -0.02em; font-weight: 800; }
h3 { font-size: 1.12rem; font-weight: 700; }
p { margin: 0 0 1em; }

.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.wrap { width: min(1160px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(780px, 100% - 32px); }
.center { text-align: center; }
.section { padding: 96px 0; }
.section.tight { padding: 72px 0; }
.band { background: var(--bg-2); border-block: 1px solid var(--line); }
.eyebrow { font-family: var(--head); font-weight: 700; font-size: 0.82rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--cyan); margin-bottom: 0.8em; }
.lead { font-size: 1.2rem; color: var(--muted); max-width: 34em; }
.sub { color: var(--muted); max-width: 40em; margin-inline: auto; font-size: 1.08rem; }
.sub-left { color: var(--muted); }
.fine { font-size: 0.92rem; color: var(--muted); }

.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; background: var(--surface); color: var(--text); padding: 8px 12px; z-index: 100; }

/* Buttons */
.btn {
  display: inline-block; font-family: var(--head); font-weight: 700; font-size: 1rem;
  background: var(--grad); color: #04101F; text-decoration: none; border: 0; cursor: pointer;
  padding: 14px 24px; border-radius: 12px; white-space: nowrap;
  box-shadow: 0 8px 30px rgba(34, 211, 238, 0.18);
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.08); box-shadow: 0 10px 36px rgba(59, 130, 246, 0.35); }
.btn-small { padding: 9px 16px; font-size: 0.95rem; }
.btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--line-strong); box-shadow: none; }
.btn-ghost:hover { background: var(--surface); box-shadow: none; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgba(7, 11, 20, 0.78); backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; }
.brand-mark { width: 40px; height: 40px; display: block; }
.wordmark { font-family: var(--head); font-size: 1.55rem; font-weight: 300; color: var(--text); letter-spacing: -0.02em; }
.wordmark b { font-weight: 800; color: #fff; }
.wordmark .ai { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.brand.small .brand-mark { width: 28px; height: 28px; }
.brand.small .wordmark { font-size: 1.15rem; }
.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a:not(.btn) { color: var(--muted); text-decoration: none; font-weight: 500; }
.site-nav a:not(.btn):hover { color: #fff; }
.nav-toggle { display: none; }

/* Hero */
.hero { position: relative; overflow: hidden; padding: 96px 0 88px; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 0%, transparent 70%);
  opacity: 0.5;
}
.hero-glow { position: absolute; width: 720px; height: 720px; right: -160px; top: -260px; border-radius: 50%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.28), rgba(139, 92, 246, 0.12) 45%, transparent 70%); filter: blur(10px); }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.cta-row { display: flex; flex-wrap: wrap; gap: 12px; margin: 30px 0 18px; }

.card { background: linear-gradient(180deg, var(--surface-2), var(--surface)); border: 1px solid var(--line); border-radius: var(--radius); }

/* Activity feed */
.feed { padding: 22px; box-shadow: 0 30px 80px rgba(0, 0, 0, 0.45), 0 0 0 1px rgba(34, 211, 238, 0.06); }
.feed-head { display: flex; align-items: center; gap: 10px; font-family: var(--head); font-weight: 700; font-size: 0.88rem; color: var(--muted); margin-bottom: 8px; }
.live { width: 9px; height: 9px; border-radius: 50%; background: #34D399; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6); animation: pulse 2s infinite; }
@keyframes pulse { 70% { box-shadow: 0 0 0 10px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }
.feed ul { list-style: none; margin: 0; padding: 0; }
.feed li { display: grid; grid-template-columns: 38px 1fr auto; gap: 12px; align-items: center; padding: 12px 0; border-top: 1px solid var(--line); }
.feed li:first-child { border-top: 0; }
.feed b { display: block; font-weight: 600; color: #fff; font-size: 0.96rem; }
.feed small { color: var(--muted); font-size: 0.85rem; }
.feed time { color: var(--muted); font-size: 0.8rem; font-variant-numeric: tabular-nums; }
.ico { display: grid; place-items: center; width: 38px; height: 38px; border-radius: 10px; font-size: 1.05rem; }
.i1 { background: rgba(34, 211, 238, 0.12); color: var(--cyan); }
.i2 { background: rgba(52, 211, 153, 0.12); color: #34D399; }
.i3 { background: rgba(251, 191, 36, 0.12); color: #FBBF24; }
.i4 { background: rgba(139, 92, 246, 0.14); color: #A78BFA; }
.i5 { background: rgba(59, 130, 246, 0.14); color: #60A5FA; }

/* Chips */
.chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 32px; }
.chips span { padding: 10px 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); font-size: 0.95rem; }
.muted-chips span { color: var(--muted); background: transparent; }

/* Services */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 40px; }
.svc { padding: 26px 22px; transition: border-color 0.2s, transform 0.2s; }
.svc:hover { border-color: rgba(34, 211, 238, 0.45); transform: translateY(-3px); }
.svc-ico { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; margin-bottom: 16px; font-size: 1.25rem;
  background: linear-gradient(135deg, rgba(34, 211, 238, 0.18), rgba(139, 92, 246, 0.18)); border: 1px solid rgba(34, 211, 238, 0.25); }
.svc-ico svg { width: 22px; height: 22px; fill: none; stroke: var(--cyan); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.svc p { color: var(--muted); font-size: 0.95rem; }
.svc ul { list-style: none; padding: 0; margin: 0; }
.svc li { position: relative; padding-left: 18px; margin: 8px 0; font-size: 0.92rem; color: var(--text); }
.svc li::before { content: ""; position: absolute; left: 0; top: 9px; width: 7px; height: 7px; border-radius: 50%; background: var(--grad); }
.callout { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 32px; padding: 22px 26px; border-radius: var(--radius);
  border: 1px dashed rgba(34, 211, 238, 0.4); background: rgba(34, 211, 238, 0.04); }
.callout p { margin: 0; color: var(--muted); }
.callout b { color: #fff; }

/* Steps */
.steps { list-style: none; padding: 0; margin: 40px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: s; }
.steps li { position: relative; background: linear-gradient(180deg, var(--surface-2), var(--surface)); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 22px; }
.steps p { color: var(--muted); font-size: 0.95rem; margin: 0; }
.num { display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 11px; background: var(--grad); color: #04101F; font-family: var(--head); font-weight: 800; margin-bottom: 16px; }

/* Why */
.why { padding: 26px 22px; }
.why p { color: var(--muted); margin: 0; font-size: 0.95rem; }
.why h3::before { content: ""; display: block; width: 30px; height: 3px; border-radius: 2px; background: var(--grad); margin-bottom: 14px; }

/* Offer */
.offer { position: relative; overflow: hidden; display: flex; align-items: center; justify-content: space-between; gap: 32px; border-radius: 22px; padding: 52px 56px;
  background: radial-gradient(circle at 90% 10%, rgba(139, 92, 246, 0.35), transparent 50%), radial-gradient(circle at 0% 100%, rgba(34, 211, 238, 0.25), transparent 50%), var(--surface-2);
  border: 1px solid rgba(59, 130, 246, 0.35); }
.offer p { margin: 0; color: var(--muted); }
.offer .btn { flex-shrink: 0; }

/* About */
.about { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.about p { color: var(--muted); }
.about p b { color: #fff; }

/* FAQ */
details { border-bottom: 1px solid var(--line); padding: 20px 0; }
details:first-of-type { margin-top: 28px; border-top: 1px solid var(--line); }
summary { font-family: var(--head); font-weight: 700; font-size: 1.08rem; color: #fff; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; font-size: 1.4rem; line-height: 1; color: var(--cyan); }
details[open] summary::after { content: "\2212"; }
details p { color: var(--muted); margin: 12px 0 0; }

/* Contact */
.contact { display: grid; grid-template-columns: 1fr 1.2fr; gap: 56px; align-items: start; }
.contact-line { font-weight: 600; }
.form { padding: 30px; display: grid; gap: 16px; }
.row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
label { display: grid; gap: 6px; font-weight: 600; font-size: 0.92rem; color: var(--text); }
input, select, textarea { font: inherit; font-weight: 400; color: var(--text); padding: 11px 13px; border: 1px solid var(--line-strong); border-radius: 10px; background: var(--bg); width: 100%; }
select option { background: var(--surface); }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--cyan); outline-offset: 1px; border-color: transparent; }
.form .btn { justify-self: start; }
.form-status { margin: 0; font-size: 0.95rem; color: var(--muted); }
.form-status.error { color: #F87171; }

/* Footer */
.site-footer { border-top: 1px solid var(--line); padding: 30px 0; font-size: 0.92rem; color: var(--muted); }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }

/* Responsive */
@media (max-width: 1020px) {
  .grid-4, .steps { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 960px) {
  .hero-grid, .about, .contact { grid-template-columns: 1fr; gap: 40px; }
  .offer { flex-direction: column; align-items: flex-start; padding: 40px 28px; }
  .callout { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; font: inherit; font-weight: 600; background: var(--surface); border: 1px solid var(--line-strong); border-radius: 10px; padding: 8px 14px; color: var(--text); }
  .site-nav { display: none; position: absolute; top: 72px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px; }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 12px 0; border-bottom: 1px solid var(--line); }
  .site-nav .btn { margin-top: 12px; text-align: center; }
  .section { padding: 64px 0; }
  .section.tight { padding: 56px 0; }
  .hero { padding: 56px 0; }
  .grid-4, .steps, .row-2 { grid-template-columns: 1fr; }
  .wordmark { font-size: 1.3rem; }
  .brand-mark { width: 34px; height: 34px; }
  .feed li { grid-template-columns: 34px 1fr; }
  .feed time { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .live { animation: none; }
}