:root {
  --bg: #0b1020;
  --bg-alt: #0f1530;
  --surface: #141c3a;
  --line: #243060;
  --text: #e8ecf8;
  --muted: #9aa6c7;
  --teal: #6ee7d8;
  --violet: #8b7cff;
  --grad: linear-gradient(120deg, var(--violet), var(--teal));
  --radius: 18px;
  --header-h: 68px;
  font-size: 17px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 12px); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
a { color: var(--teal); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; letter-spacing: -.01em; }
h1 { font-size: clamp(2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.4rem); }
h3 { font-size: 1.12rem; }
p { margin: 0 0 1em; }

.wrap { width: 100%; max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.wrap--narrow { max-width: 820px; }
.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.eyebrow {
  text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 600;
  color: var(--teal); margin-bottom: .8em;
}

/* buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: .8em 1.5em; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--grad); color: #0b1020; font: inherit; font-weight: 700; text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 28px -8px rgba(110, 231, 216, .6); }
.btn:focus-visible, a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 2px solid var(--teal); outline-offset: 3px;
}
.btn--ghost { background: transparent; color: var(--text); box-shadow: inset 0 0 0 1.5px var(--line); }
.btn--ghost:hover { box-shadow: inset 0 0 0 1.5px var(--teal); }
.btn--small { padding: .5em 1.1em; font-size: .9rem; }
.btn--light { background: #fff; color: #0b1020; }
.btn--wide { width: 100%; }
.btn[disabled] { opacity: .6; cursor: progress; transform: none; }
.btn.is-loading::before {
  content: ""; width: 1em; height: 1em; margin-right: .6em; border-radius: 50%;
  border: 2px solid rgba(11, 16, 32, .35); border-top-color: #0b1020; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* header */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 50; height: var(--header-h);
  background: rgba(11, 16, 32, .78); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(36, 48, 96, .6);
}
.topbar__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.logo { display: inline-flex; align-items: center; gap: 10px; color: var(--text); text-decoration: none; font-weight: 800; font-size: 1.2rem; letter-spacing: .06em; }
.logo__mark { width: 30px; height: 30px; }
.logo--small { font-size: 1rem; }
.logo--small .logo__mark { width: 24px; height: 24px; }
.menu { display: flex; align-items: center; gap: 22px; }
.menu a:not(.btn) { color: var(--muted); text-decoration: none; font-size: .92rem; font-weight: 500; }
.menu a:not(.btn):hover { color: var(--text); }
.menu-toggle { display: none; background: none; border: 0; padding: 8px; cursor: pointer; }
.menu-toggle span { display: block; width: 24px; height: 2px; background: var(--text); margin: 5px 0; transition: transform .2s, opacity .2s; }

@media (max-width: 920px) {
  .menu-toggle { display: block; }
  .menu {
    position: fixed; top: var(--header-h); left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 20px;
    background: var(--bg); border-bottom: 1px solid var(--line);
    transform: translateY(-8px); opacity: 0; visibility: hidden; transition: all .2s ease;
  }
  .menu a:not(.btn) { padding: 14px 4px; border-bottom: 1px solid rgba(36, 48, 96, .6); font-size: 1rem; }
  .menu .btn { margin-top: 14px; }
  .menu.is-open { transform: none; opacity: 1; visibility: visible; }
  .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* hero */
.hero {
  position: relative; min-height: 100vh; min-height: 100svh;
  display: flex; align-items: center;
  padding: calc(var(--header-h) + 32px) 0 72px;
  background:
    radial-gradient(900px 600px at 85% 30%, rgba(139, 124, 255, .18), transparent 60%),
    radial-gradient(700px 500px at 10% 90%, rgba(110, 231, 216, .12), transparent 60%),
    var(--bg);
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(36, 48, 96, .35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 48, 96, .35) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
  mask-image: radial-gradient(ellipse at center, #000 20%, transparent 75%);
}
.hero__inner { position: relative; display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 40px; align-items: center; }
.lead { font-size: 1.12rem; color: var(--muted); max-width: 36em; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 28px 0 24px; }
.chips { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px; }
.chips li { font-size: .82rem; color: var(--muted); padding: .35em .9em; border: 1px solid var(--line); border-radius: 999px; background: rgba(20, 28, 58, .6); }
.hero__art { width: 100%; max-width: 560px; justify-self: center; }
.boxart__label { font: 700 13px/1 -apple-system, "Segoe UI", Roboto, sans-serif; fill: #e8ecf8; letter-spacing: 2px; }
.hero__scroll { position: absolute; left: 50%; bottom: 20px; transform: translateX(-50%); color: var(--muted); width: 32px; height: 32px; }
.hero__scroll svg { width: 32px; height: 32px; animation: nudge 2s ease-in-out infinite; }

@media (max-width: 920px) {
  .hero__inner { grid-template-columns: minmax(0, 1fr); text-align: left; }
  .hero__art { max-width: 420px; order: -1; }
  .hero__scroll { display: none; }
}

/* hero animation */
.box { animation: float 6s ease-in-out infinite; transform-origin: 260px 280px; }
.bubble--1 { animation: float 5s ease-in-out infinite .6s; }
.bubble--2 { animation: float 5.5s ease-in-out infinite 1.2s; }
.led { animation: blink 1.6s ease-in-out infinite; }
.led--2 { animation-delay: .3s; }
.led--3 { animation-delay: .6s; }
.spark { animation: blink 3s ease-in-out infinite; transform-origin: 258px 80px; }
.orbit-dot { animation: blink 2.4s ease-in-out infinite; }
.orbit-dot--2 { animation-delay: 1.2s; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .3; } }
@keyframes nudge { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(6px); } }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .btn.is-loading::before { animation: spin 1.6s linear infinite !important; }
}

/* sections */
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); border-block: 1px solid rgba(36, 48, 96, .5); }
.section__lead { color: var(--muted); max-width: 46em; font-size: 1.05rem; }
.note { color: var(--muted); margin-top: 28px; max-width: 46em; }
@media (max-width: 640px) { .section { padding: 64px 0; } }

.grid { display: grid; gap: 20px; margin-top: 36px; }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 920px) { .grid--3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .grid--3 { grid-template-columns: 1fr; } }

.card {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: rgba(110, 231, 216, .5); transform: translateY(-2px); }
.card p { color: var(--muted); margin: 0; font-size: .95rem; }
.card__icon { width: 40px; height: 40px; color: var(--teal); margin-bottom: 16px; padding: 6px; border-radius: 12px; background: rgba(110, 231, 216, .1); }
.card--deploy .card__icon { color: var(--violet); background: rgba(139, 124, 255, .12); }

/* acronym */
.acronym { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 36px; }
.acronym__item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px 20px; }
.acronym__item b { display: block; font-size: 2.6rem; line-height: 1; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; margin-bottom: 10px; }
.acronym__item h3 { margin-bottom: .4em; }
.acronym__item p { color: var(--muted); font-size: .92rem; margin: 0; }
@media (max-width: 1020px) { .acronym { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .acronym { grid-template-columns: 1fr; } }

/* steps */
.steps { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: none; }
.step { position: relative; padding: 26px 22px; border-radius: var(--radius); border: 1px solid var(--line); background: linear-gradient(180deg, rgba(20, 28, 58, .9), rgba(20, 28, 58, .4)); }
.step__num { display: inline-grid; place-items: center; width: 40px; height: 40px; border-radius: 50%; background: var(--grad); color: #0b1020; font-weight: 800; margin-bottom: 16px; }
.step p { color: var(--muted); font-size: .95rem; margin: 0; }
@media (max-width: 920px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* use cases */
.usecases { list-style: none; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--line); }
.usecases li { padding: 26px 24px 22px 0; border-bottom: 1px solid var(--line); }
.usecases h3::before { content: ""; display: inline-block; width: 10px; height: 10px; border-radius: 3px; background: var(--grad); margin-right: 10px; vertical-align: middle; }
.usecases p { color: var(--muted); font-size: .95rem; margin: 0; }
@media (max-width: 920px) { .usecases { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .usecases { grid-template-columns: 1fr; } }

/* price band */
.band { background: var(--grad); color: #0b1020; padding: 56px 0; }
.band__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.band h2 { margin-bottom: .3em; }
.band p { margin: 0; max-width: 40em; font-weight: 500; }

/* faq */
details { border-bottom: 1px solid var(--line); }
details:first-of-type { border-top: 1px solid var(--line); margin-top: 28px; }
summary { cursor: pointer; list-style: none; padding: 20px 40px 20px 0; font-weight: 600; position: relative; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; position: absolute; right: 6px; top: 50%; transform: translateY(-50%); font-size: 1.5rem; color: var(--teal); transition: transform .2s; }
details[open] summary::after { transform: translateY(-50%) rotate(45deg); }
details p { color: var(--muted); padding-bottom: 12px; }

/* contact */
.contact { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 48px; align-items: start; }
.contact__intro p { color: var(--muted); }
.ticks { list-style: none; padding: 0; margin: 20px 0 0; }
.ticks li { padding-left: 28px; position: relative; margin-bottom: 10px; color: var(--muted); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: .45em; width: 12px; height: 7px; border-left: 2px solid var(--teal); border-bottom: 2px solid var(--teal); transform: rotate(-45deg); }
@media (max-width: 860px) { .contact { grid-template-columns: minmax(0, 1fr); gap: 28px; } }

.form { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: .88rem; font-weight: 600; margin-bottom: 6px; }
.req { color: var(--teal); }
.field input, .field textarea {
  width: 100%; font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--line);
  border-radius: 12px; padding: .75em .9em; transition: border-color .15s;
}
.field textarea { resize: vertical; min-height: 130px; }
.field input:focus, .field textarea:focus { border-color: var(--teal); outline: none; }
.field input.is-invalid, .field textarea.is-invalid { border-color: #ff7a8a; }
.check { display: flex; gap: 10px; align-items: flex-start; font-size: .86rem; color: var(--muted); margin: 6px 0 20px; cursor: pointer; }
.check input { margin-top: .3em; accent-color: var(--teal); width: 16px; height: 16px; flex: none; }
.check.is-invalid span { color: #ff7a8a; }
.form__status { margin: 14px 0 0; min-height: 1.6em; font-size: .92rem; }
.form__status.is-ok { color: var(--teal); }
.form__status.is-err { color: #ff7a8a; }

/* footer */
.footer { padding: 40px 0 48px; border-top: 1px solid var(--line); }
.footer__inner { display: grid; gap: 6px; }
.footer p { margin: 0; color: var(--muted); font-size: .9rem; }
.footer__meta { font-size: .8rem !important; }
.footer a { color: var(--muted); }

/* privacy page */
.doc { padding: calc(var(--header-h) + 40px) 0 80px; }
.doc h1 { font-size: clamp(1.7rem, 4vw, 2.4rem); }
.doc h2 { font-size: 1.25rem; margin-top: 1.6em; }
.doc p, .doc li { color: var(--muted); }