:root {
  color-scheme: light;
  --bg: #ffffff;
  --surface: #ffffff;
  --surface-soft: #fbfcfd;
  --text: #101114;
  --muted: #666b73;
  --muted-strong: #4a5059;
  --line: #e5e9ed;
  --line-strong: #d8dde3;
  --blue: #11a9f4;
  --blue-strong: #0098e7;
  --blue-soft: #e7f7ff;
  --blue-glow: rgba(24, 171, 244, .18);
  --shadow: 0 14px 40px rgba(24, 40, 55, .06);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  font-synthesis: none;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0c0f12;
  --surface: #11151a;
  --surface-soft: #12171c;
  --text: #f4f7f9;
  --muted: #9ba4ad;
  --muted-strong: #c1c7ce;
  --line: #252d34;
  --line-strong: #333d46;
  --blue: #32b9ff;
  --blue-strong: #48c1ff;
  --blue-soft: rgba(29, 173, 246, .12);
  --blue-glow: rgba(25, 174, 247, .16);
  --shadow: 0 18px 50px rgba(0, 0, 0, .24);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0c0f12;
    --surface: #11151a;
    --surface-soft: #12171c;
    --text: #f4f7f9;
    --muted: #9ba4ad;
    --muted-strong: #c1c7ce;
    --line: #252d34;
    --line-strong: #333d46;
    --blue: #32b9ff;
    --blue-strong: #48c1ff;
    --blue-soft: rgba(29, 173, 246, .12);
    --blue-glow: rgba(25, 174, 247, .16);
    --shadow: 0 18px 50px rgba(0, 0, 0, .24);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--bg);
  font-size: 15px;
}
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }

.page-shell {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  min-height: 100vh;
  border-left: 1px dashed var(--line);
  border-right: 1px dashed var(--line);
}

.site-header,
main,
.site-footer {
  width: min(1080px, calc(100% - 56px));
  margin-inline: auto;
}

.site-header {
  min-height: 74px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  text-decoration: none;
  font-size: 17px;
  font-weight: 740;
  letter-spacing: -.02em;
}

.brand-mark {
  width: 27px;
  height: 27px;
  color: var(--text);
}
.brand-mark svg { display: block; width: 100%; height: 100%; }

nav { display: flex; align-items: center; gap: 40px; font-size: 13px; color: var(--muted-strong); }
nav a { text-decoration: none; transition: color .18s ease; }
nav a:hover { color: var(--text); }

.hero {
  position: relative;
  min-height: 650px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 15px 0 54px;
}

.hero-art {
  width: min(760px, 100%);
  height: 375px;
  position: relative;
  display: grid;
  place-items: center;
  color: var(--blue);
}
.hero-glow {
  position: absolute;
  width: 330px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--blue-glow) 0, rgba(18,170,245,.08) 42%, transparent 72%);
  filter: blur(3px);
}
.orbit-art { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }

.hero-robot {
  position: relative;
  z-index: 2;
  width: 92px;
  height: 72px;
  display: grid;
  place-items: center;
}
.robot-body {
  position: relative;
  width: 74px;
  height: 58px;
  border: 2px solid var(--text);
  border-radius: 15px;
  background: var(--surface);
  box-shadow: 0 8px 28px rgba(0,0,0,.08);
  display: grid;
  place-items: center;
}
.robot-face {
  width: 52px;
  height: 35px;
  border-radius: 10px;
  background: var(--text);
  position: relative;
}
.robot-face i { position: absolute; top: 11px; width: 5px; height: 7px; border-radius: 50%; background: var(--surface); }
.robot-face i:first-child { left: 12px; }
.robot-face i:nth-child(2) { right: 12px; }
.robot-face b { position: absolute; width: 15px; height: 7px; left: 50%; bottom: 7px; transform: translateX(-50%); border-bottom: 2px solid var(--surface); border-radius: 0 0 12px 12px; }
.robot-ear { position: absolute; top: 26px; width: 10px; height: 24px; border: 2px solid var(--text); background: var(--blue); }
.robot-ear.left { left: 0; border-radius: 7px 0 0 7px; }
.robot-ear.right { right: 0; border-radius: 0 7px 7px 0; }
.robot-antenna { position: absolute; width: 2px; height: 15px; background: var(--text); top: -8px; left: 50%; transform: translateX(-50%); }
.robot-antenna::before { content: ""; position: absolute; width: 9px; height: 9px; border-radius: 50%; background: var(--text); left: 50%; top: -4px; transform: translateX(-50%); }

.hero-copy { margin-top: -9px; position: relative; z-index: 3; }
h1 {
  margin: 0;
  font-size: clamp(3rem, 6vw, 4.65rem);
  line-height: .98;
  letter-spacing: -.058em;
  font-weight: 760;
}
.hero-subtitle {
  margin: 14px 0 0;
  color: var(--muted);
  font-size: clamp(1rem, 2vw, 1.25rem);
}
.hero-actions { display: flex; justify-content: center; flex-wrap: wrap; gap: 16px; margin-top: 30px; }
.button {
  min-height: 48px;
  padding: 0 23px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  text-decoration: none;
  border: 1px solid var(--line-strong);
  font-size: 14px;
  font-weight: 650;
  transition: transform .16s ease, border-color .16s ease, background .16s ease;
}
.button:hover { transform: translateY(-1px); }
.button-primary { background: var(--text); color: var(--bg); border-color: var(--text); box-shadow: var(--shadow); }
.button-secondary { background: var(--surface); color: var(--text); }
.button-secondary:hover { border-color: var(--blue); }
.button-icon { font-size: 16px; line-height: 1; }

.tested { margin-top: 38px; display: flex; flex-direction: column; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; }
.tested-pills { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; }
.provider-pill { min-width: 94px; padding: 8px 14px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--muted-strong); display: inline-flex; align-items: center; justify-content: center; gap: 8px; }
.provider-icon { width: 17px; height: 17px; display: block; flex: 0 0 auto; object-fit: contain; }
:root[data-theme="dark"] .provider-icon--mono { filter: invert(1); }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .provider-icon--mono { filter: invert(1); }
}

.content-section { padding: 36px 0 42px; }
.content-section + .content-section { border-top: 0; }
.content-section h2 { margin: 0 0 22px; font-size: 26px; letter-spacing: -.035em; line-height: 1.1; }
.hash { color: #7c858d; font-weight: 500; margin-right: 6px; }
.intro { max-width: 660px; }
.intro p { margin: 0 0 5px; color: var(--muted-strong); font-size: 14px; line-height: 1.55; }

.feature-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 10px; }
.feature-card {
  min-height: 184px;
  padding: 18px 13px 16px;
  text-align: center;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: linear-gradient(180deg, var(--surface) 0%, var(--surface-soft) 100%);
}
.feature-icon,
.step-icon {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: var(--blue-soft);
  color: var(--blue-strong);
  display: grid;
  place-items: center;
  margin: 0 auto 13px;
  font-size: 22px;
  font-weight: 650;
}
.feature-card h3 { margin: 0 0 8px; font-size: 13px; line-height: 1.15; letter-spacing: -.02em; }
.feature-card p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.45; }

.steps { display: grid; grid-template-columns: repeat(3, 1fr); padding-top: 18px; }
.step { position: relative; text-align: center; padding: 0 30px; }
.step-number { width: 28px; height: 28px; border-radius: 50%; background: var(--blue); color: white; display: grid; place-items: center; margin: 0 auto 31px; font-size: 12px; font-weight: 700; }
.step-line { position: absolute; height: 1px; border-top: 1px dashed var(--line-strong); top: 14px; left: calc(50% + 20px); width: calc(100% - 40px); }
.step-icon { width: 62px; height: 62px; font-size: 27px; }
.step h3 { margin: 11px 0 7px; font-size: 14px; }
.step p { margin: 0 auto; color: var(--muted); font-size: 12px; line-height: 1.5; max-width: 210px; }

.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; }
.principles article { display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; }
.principle-icon { width: 40px; height: 40px; color: var(--blue); font-size: 26px; display: grid; place-items: center; }
.principles h3 { margin: 1px 0 5px; font-size: 13px; }
.principles p { margin: 0; color: var(--muted); font-size: 11px; line-height: 1.5; }

.pricing-card {
  min-height: 225px;
  border: 1px solid rgba(18,170,245,.25);
  border-radius: 14px;
  background: linear-gradient(135deg, var(--surface) 0%, rgba(20,170,244,.04) 100%);
  display: grid;
  grid-template-columns: .9fr 1.1fr;
  align-items: center;
  padding: 30px 54px;
  overflow: hidden;
}
.price-row { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.price-row strong { font-size: 38px; letter-spacing: -.04em; line-height: 1; }
.price-row span { color: var(--blue-strong); background: var(--blue-soft); border-radius: 999px; padding: 4px 10px; font-size: 12px; }
.pricing-copy p { margin: 8px 0 0; font-size: 13px; }
.pricing-copy .muted { color: var(--muted); }
.pricing-illustration { position: relative; color: var(--blue); min-height: 160px; }
.pricing-illustration svg { width: 100%; height: 100%; display: block; }
.device-bot { position: absolute; font-weight: 800; color: var(--blue-strong); font-size: 15px; letter-spacing: -2px; }
.laptop-bot { left: 27%; top: 51%; }
.monitor-bot { left: 67%; top: 44%; }

.install-panel {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-soft);
  padding: 28px 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.alpha-pill { display: inline-block; margin-bottom: 12px; padding: 4px 9px; border-radius: 999px; background: var(--blue-soft); color: var(--blue-strong); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.install-panel h3 { margin: 0 0 7px; font-size: 18px; }
.install-panel p { margin: 0; max-width: 670px; color: var(--muted); font-size: 13px; }

.site-footer { position: relative; min-height: 255px; overflow: hidden; display: flex; align-items: flex-end; }
.footer-art { position: absolute; inset: 0; color: var(--blue); pointer-events: none; }
.footer-art svg { width: 100%; height: 100%; }
.footer-row { width: 100%; min-height: 88px; position: relative; z-index: 2; display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; border-top: 1px solid var(--line); font-size: 12px; color: var(--muted); }
.footer-links { display: flex; align-items: center; gap: 34px; }
.footer-links a { text-decoration: none; color: var(--muted-strong); }
.footer-links a:hover { color: var(--text); }
.theme-toggle { justify-self: end; width: 62px; height: 32px; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--muted-strong); display: flex; align-items: center; justify-content: space-evenly; cursor: pointer; font-size: 17px; }
.theme-toggle span { display: grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; }
.theme-toggle[aria-pressed="false"] .sun,
.theme-toggle[aria-pressed="true"] .moon { background: var(--surface-soft); color: var(--text); }

@media (max-width: 980px) {
  .feature-grid { grid-template-columns: repeat(4, 1fr); }
  .principles { grid-template-columns: repeat(2, 1fr); }
  .pricing-card { padding-inline: 36px; }
}

@media (max-width: 760px) {
  .page-shell { width: 100%; border: 0; }
  .site-header, main, .site-footer { width: min(100% - 32px, 680px); }
  .site-header { min-height: 64px; }
  nav { gap: 18px; }
  nav a:first-child { display: none; }
  .hero { min-height: 600px; padding-top: 0; }
  .hero-art { height: 330px; }
  h1 { font-size: clamp(2.8rem, 12vw, 4rem); }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card { min-height: 165px; }
  .steps { grid-template-columns: 1fr; gap: 38px; }
  .step-line { display: none; }
  .step-number { margin-bottom: 18px; }
  .principles { grid-template-columns: 1fr; gap: 22px; }
  .pricing-card { grid-template-columns: 1fr; padding: 28px; }
  .pricing-illustration { margin-top: 8px; min-height: 135px; }
  .install-panel { align-items: flex-start; flex-direction: column; }
  .footer-row { grid-template-columns: 1fr auto; gap: 18px; padding: 18px 0; }
  .footer-links { grid-column: 1 / -1; grid-row: 1; justify-content: flex-start; gap: 20px; }
  .theme-toggle { grid-column: 2; grid-row: 2; }
}

@media (max-width: 520px) {
  nav a:nth-child(2) { display: none; }
  nav { gap: 14px; }
  .hero { min-height: 560px; }
  .hero-art { height: 285px; }
  .hero-robot { transform: scale(.88); }
  .hero-actions { flex-direction: column; align-items: stretch; width: min(320px, 100%); margin-inline: auto; }
  .button { width: 100%; }
  .tested-pills { gap: 8px; }
  .provider-pill { min-width: 86px; padding-inline: 11px; }
  .content-section { padding: 30px 0 36px; }
  .content-section h2 { font-size: 23px; }
  .feature-grid { gap: 8px; }
  .feature-card { padding-inline: 10px; }
  .pricing-card { padding: 23px; }
  .price-row strong { font-size: 34px; }
  .site-footer { min-height: 230px; }
}