:root {
  color-scheme: dark;
  --bg: #08090b;
  --surface: #111318;
  --surface-strong: #171a20;
  --line: rgba(255, 255, 255, 0.10);
  --text: #f7f8fa;
  --muted: #a7abb5;
  --accent: #55e5b5;
  --accent-strong: #2fcf99;
  --violet: #8b6cff;
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 80% -10%, rgba(101, 76, 255, 0.16), transparent 34rem),
    radial-gradient(circle at 10% 30%, rgba(52, 220, 167, 0.08), transparent 30rem),
    var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Helvetica Neue", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid rgba(85, 229, 181, 0.65);
  outline-offset: 4px;
}

.shell {
  width: min(calc(100% - 40px), var(--max-width));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 72px;
  padding: 0 max(24px, calc((100vw - var(--max-width)) / 2));
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(8, 9, 11, 0.78);
  backdrop-filter: blur(20px) saturate(140%);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 16px;
  font-weight: 760;
  letter-spacing: 0.02em;
}

.brand-mark {
  position: relative;
  width: 34px;
  height: 34px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  background: #15171b;
  box-shadow: inset 0 0 0 5px rgba(255, 255, 255, 0.025);
}

.brand-mark span {
  position: absolute;
  right: 5px;
  bottom: 5px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: white;
}

nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

nav a {
  color: var(--muted);
  font-size: 14px;
  font-weight: 620;
}

nav a:hover,
nav a[aria-current="page"] {
  color: var(--text);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  align-items: center;
  gap: 8vw;
  min-height: calc(100vh - 72px);
  padding-block: 90px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 720;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 20px var(--accent);
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

.hero h1 {
  margin: 28px 0 26px;
  font-size: clamp(44px, 5.3vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.055em;
}

.hero h1 span {
  display: block;
}

.hero h1 .hero-line {
  color: var(--text);
  white-space: nowrap;
}

.hero h1 .hero-accent {
  background: linear-gradient(110deg, #ffffff 15%, #9fa5ff 48%, #55e5b5 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.lead {
  max-width: 650px;
  color: #c4c7cf;
  font-size: clamp(18px, 2.2vw, 23px);
  line-height: 1.65;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 36px 0 28px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 14px;
  font-weight: 750;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: #06110d;
}

.button.primary:hover {
  background: #76efc9;
}

.button.secondary {
  background: rgba(255, 255, 255, 0.045);
}

.button.secondary:hover {
  border-color: rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.075);
}

.requirements {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.requirements span {
  padding: 6px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
  font-size: 12px;
}

.controller-visual {
  position: relative;
  display: grid;
  min-height: 620px;
  overflow: hidden;
  place-items: center;
}

.controller-visual::before {
  position: absolute;
  width: 460px;
  height: 460px;
  border-radius: 50%;
  background: rgba(85, 229, 181, 0.12);
  content: "";
  filter: blur(90px);
}

.screen-card {
  position: absolute;
  z-index: 3;
  top: 26px;
  width: min(100%, 380px);
  min-height: 178px;
  padding: 30px;
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 44px;
  background:
    radial-gradient(circle at 80% 20%, rgba(91, 74, 210, 0.35), transparent 55%),
    #08090c;
  box-shadow: 0 35px 90px rgba(0, 0, 0, 0.48);
}

.screen-label {
  display: block;
  margin-bottom: 13px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.22em;
}

.screen-card strong {
  display: block;
  font-size: 25px;
}

.screen-card p {
  margin: 21px 0 0;
  padding: 13px 18px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: #aeb2bd;
}

.wheel {
  position: absolute;
  right: 50%;
  bottom: 30px;
  width: 390px;
  max-width: 92vw;
  aspect-ratio: 1;
  transform: translateX(50%);
  border: 1px solid rgba(255, 255, 255, 0.13);
  border-radius: 50%;
  background:
    radial-gradient(circle at 35% 25%, rgba(255, 255, 255, 0.055), transparent 42%),
    #15171a;
  box-shadow: 0 38px 90px rgba(0, 0, 0, 0.52), inset 0 0 0 1px rgba(255, 255, 255, 0.025);
}

.wheel-label {
  position: absolute;
  top: 19%;
  left: 50%;
  transform: translateX(-50%);
  font-size: 18px;
  font-weight: 820;
  letter-spacing: 0.08em;
}

.wheel-key,
.wheel-center {
  position: absolute;
  display: grid;
  place-items: center;
}

.wheel-key {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.24);
  font-size: 34px;
  font-weight: 500;
}

.key-top {
  top: 31%;
  left: 50%;
  transform: translateX(-50%);
}

.key-left {
  top: 49%;
  left: 16%;
}

.key-right {
  top: 49%;
  right: 16%;
}

.key-bottom {
  bottom: 11%;
  left: 50%;
  transform: translateX(-50%) rotate(-8deg);
  background: transparent;
  font-size: 31px;
}

.wheel-center {
  top: 50%;
  left: 50%;
  width: 116px;
  height: 116px;
  transform: translate(-50%, -36%);
  border-radius: 50%;
  background: #030405;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.5);
  font-size: 46px;
}

.wheel-dot {
  position: absolute;
  right: 12%;
  bottom: 22%;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: white;
}

.section {
  padding-block: 110px;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 48px;
}

.section h2,
.cta h2,
.document-heading h1 {
  margin: 15px 0 0;
  font-size: clamp(34px, 4.7vw, 57px);
  line-height: 1.12;
  letter-spacing: -0.04em;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.feature-card,
.support-card {
  min-height: 260px;
  padding: 32px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.055), rgba(255, 255, 255, 0.022));
}

.feature-icon {
  display: grid;
  width: 50px;
  height: 50px;
  margin-bottom: 44px;
  place-items: center;
  border-radius: 16px;
  background: rgba(85, 229, 181, 0.12);
  color: var(--accent);
  font-weight: 800;
}

.feature-card h3 {
  margin-bottom: 10px;
  font-size: 23px;
}

.feature-card p,
.support-card p,
.section-copy {
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: 8vw;
}

.section-copy {
  margin: 28px 0;
  font-size: 18px;
}

.text-link,
.support-card a,
.document-content a {
  color: var(--accent);
  font-weight: 680;
}

.flow-card {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: var(--surface);
}

.flow-node {
  display: grid;
  min-height: 86px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.045);
  font-weight: 760;
}

.flow-line {
  width: 62px;
  height: 1px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.14), var(--accent), rgba(255, 255, 255, 0.14));
}

.flow-line span {
  display: block;
  width: 80px;
  transform: translate(-9px, -28px);
  color: var(--muted);
  font-size: 10px;
  text-align: center;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.gallery figure {
  overflow: hidden;
  margin: 0;
  padding: 26px 26px 0;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: linear-gradient(160deg, #202329, #101216);
  text-align: center;
}

.gallery img {
  display: block;
  width: min(100%, 350px);
  height: 620px;
  margin-inline: auto;
  object-fit: cover;
  object-position: top;
  border-radius: 40px 40px 0 0;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.45);
}

.gallery figcaption {
  padding: 20px;
  color: var(--muted);
  font-size: 13px;
}

.cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  margin-block: 90px 120px;
  padding: 46px;
  border: 1px solid rgba(85, 229, 181, 0.24);
  border-radius: 32px;
  background: linear-gradient(125deg, rgba(85, 229, 181, 0.10), rgba(139, 108, 255, 0.10));
}

.cta h2 {
  max-width: 700px;
  font-size: clamp(28px, 4vw, 46px);
}

.site-footer {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px 40px;
  padding-block: 42px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: #d4d6dc;
  font-size: 13px;
}

.disclaimer {
  max-width: 760px;
}

.copyright {
  text-align: right;
}

.document {
  padding-block: 90px 120px;
}

.document-heading {
  max-width: 820px;
  margin-bottom: 72px;
}

.document-heading > p {
  margin-top: 22px;
  color: var(--muted);
}

.support-heading .button {
  margin-top: 22px;
}

.document-layout {
  display: grid;
  grid-template-columns: 280px minmax(0, 740px);
  align-items: start;
  justify-content: space-between;
  gap: 60px;
}

.document-summary {
  position: sticky;
  top: 100px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.document-summary ul {
  margin: 15px 0 0;
  padding-left: 20px;
  color: var(--muted);
  font-size: 13px;
}

.document-content section {
  padding: 0 0 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

.document-content section:last-child {
  border-bottom: 0;
}

.document-content h2 {
  margin-bottom: 20px;
  font-size: 27px;
  letter-spacing: -0.02em;
}

.document-content h3 {
  margin: 26px 0 8px;
  font-size: 17px;
}

.document-content p,
.document-content li {
  color: #c2c5cc;
}

.document-content ul {
  padding-left: 22px;
}

.compact-footer {
  display: flex;
  justify-content: space-between;
}

.support-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 110px;
}

.support-card > span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 800;
}

.support-card h2 {
  margin: 58px 0 14px;
  font-size: 22px;
}

.faq {
  max-width: 900px;
  margin-inline: auto;
}

.faq details {
  border-top: 1px solid var(--line);
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  padding: 25px 4px;
  cursor: pointer;
  font-size: 17px;
  font-weight: 680;
  list-style: none;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  float: right;
  color: var(--accent);
  content: "+";
  font-size: 24px;
  font-weight: 400;
}

.faq details[open] summary::after {
  content: "−";
}

.faq details div {
  max-width: 760px;
  padding: 0 4px 24px;
  color: var(--muted);
}

.contact-panel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  margin-top: 110px;
  padding: 42px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background: var(--surface);
}

.contact-panel h2 {
  margin: 13px 0 20px;
  font-size: 30px;
}

.contact-panel li,
.contact-panel p {
  color: var(--muted);
}

@media (max-width: 900px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 70px;
  }

  .controller-visual {
    min-height: 590px;
  }

  .split-section,
  .document-layout {
    grid-template-columns: 1fr;
  }

  .document-summary {
    position: static;
  }

  .support-grid {
    grid-template-columns: 1fr;
  }

  .support-card {
    min-height: 220px;
  }

  .support-card h2 {
    margin-top: 34px;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding-inline: 20px;
  }

  nav {
    gap: 16px;
  }

  nav a:first-child {
    display: none;
  }

  .shell {
    width: min(calc(100% - 28px), var(--max-width));
  }

  .hero {
    min-height: 0;
    padding-block: 64px;
  }

  .hero h1 {
    font-size: 44px;
  }

  .hero h1 .hero-line {
    white-space: normal;
  }

  .feature-grid,
  .gallery {
    grid-template-columns: 1fr;
  }

  .flow-card {
    grid-template-columns: 1fr;
    gap: 12px;
    padding: 26px;
  }

  .flow-line {
    width: 1px;
    height: 35px;
    margin-inline: auto;
    background: linear-gradient(rgba(255, 255, 255, 0.14), var(--accent), rgba(255, 255, 255, 0.14));
  }

  .flow-line span {
    width: 90px;
    transform: translate(-44px, 8px);
  }

  .gallery img {
    height: 580px;
  }

  .cta,
  .contact-panel {
    align-items: flex-start;
    flex-direction: column;
    padding: 30px;
  }

  .site-footer,
  .compact-footer {
    display: flex;
    flex-direction: column;
  }

  .copyright {
    text-align: left;
  }

  .document {
    padding-top: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}