:root {
  color-scheme: dark;
  --night: #021536;
  --deep: #03245a;
  --blue: #0753a5;
  --blue-bright: #0b72d4;
  --cyan: #baf3ff;
  --ice: #ecfbff;
  --mist: rgb(226 248 255 / 0.68);
  --faint: rgb(222 247 255 / 0.14);
  --line: rgb(222 247 255 / 0.24);
  --coral: #ff8a68;
  --ink: #041b3b;
  --display: "Avenir Next Condensed", "DIN Condensed", "Futura Condensed", "Franklin Gothic Medium", sans-serif;
  --body: "Avenir Next", "Century Gothic", "Gill Sans", sans-serif;
  --serif: "Iowan Old Style", "Baskerville", "Palatino Linotype", serif;
  --mono: "SF Mono", "Menlo", "Cascadia Mono", monospace;
  --shell: min(1480px, calc(100vw - 56px));
}

* { box-sizing: border-box; }
html { min-width: 320px; overflow-x: clip; scroll-behavior: smooth; background: var(--night); }
body {
  min-width: 320px;
  margin: 0;
  overflow-x: hidden;
  color: var(--ice);
  background:
    radial-gradient(circle at 76% 5%, rgb(94 212 255 / 0.2), transparent 30rem),
    linear-gradient(135deg, var(--deep), var(--night) 56%);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.55;
}

a { color: inherit; }
img, video { max-width: 100%; height: auto; display: block; }
button, input, textarea { font: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--cyan);
  outline-offset: 5px;
}

.skip-link {
  position: fixed;
  left: 16px;
  top: -90px;
  z-index: 100;
  padding: 11px 15px 9px;
  color: var(--ink);
  background: var(--cyan);
  font-weight: 800;
  text-decoration: none;
  transition: top 160ms ease;
}
.skip-link:focus { top: 16px; }

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  opacity: 0.8;
}
.atmosphere::before {
  position: absolute;
  inset: 0;
  content: "";
  background:
    linear-gradient(90deg, rgb(220 249 255 / 0.025) 1px, transparent 1px) 0 0 / 72px 72px,
    linear-gradient(rgb(220 249 255 / 0.025) 1px, transparent 1px) 0 0 / 72px 72px;
  mask-image: linear-gradient(to bottom, black, transparent 68%);
}
.atmosphere span {
  position: absolute;
  left: -10vw;
  width: 120vw;
  height: 44vw;
  bottom: -29vw;
  border: 1px solid rgb(185 242 255 / 0.26);
  border-radius: 48% 52% 0 0 / 100% 100% 0 0;
  box-shadow: 0 -10px 28px rgb(112 221 255 / 0.08);
  transform-origin: 50% 100%;
  animation: wave-drift 13s ease-in-out infinite alternate;
}
.atmosphere span:nth-child(2) {
  height: 36vw;
  bottom: -24vw;
  border-color: rgb(255 255 255 / 0.2);
  animation-duration: 17s;
  animation-direction: alternate-reverse;
}
.atmosphere span:nth-child(3) {
  height: 27vw;
  bottom: -17vw;
  border-color: rgb(186 243 255 / 0.13);
  animation-duration: 10s;
}
@keyframes wave-drift {
  from { transform: translate3d(-1.5%, 1%, 0) rotate(-1deg) scaleX(1.01); }
  to { transform: translate3d(1.5%, -1.5%, 0) rotate(1deg) scaleX(0.99); }
}

.site-nav {
  width: var(--shell);
  height: 86px;
  position: fixed;
  left: 50%;
  top: 0;
  z-index: 40;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 28px;
  border-bottom: 1px solid var(--line);
  transform: translateX(-50%);
  transition: width 220ms ease, height 220ms ease, padding 220ms ease, background 220ms ease, border-color 220ms ease;
}
.site-nav.is-scrolled {
  width: min(1520px, calc(100vw - 24px));
  height: 68px;
  top: 10px;
  padding-inline: 18px;
  border: 1px solid rgb(224 249 255 / 0.2);
  border-radius: 8px;
  background: rgb(2 27 71 / 0.82);
  box-shadow: 0 16px 50px rgb(0 11 38 / 0.3), inset 0 1px rgb(255 255 255 / 0.08);
  backdrop-filter: blur(18px) saturate(1.2);
}

.brand {
  width: fit-content;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.26em;
  text-decoration: none;
}
.brand strong { color: var(--cyan); font-weight: 500; }
.brand svg { width: 34px; height: 34px; fill: none; stroke: currentColor; stroke-width: 1.2; }
.brand .brand-core { fill: var(--cyan); stroke: none; filter: drop-shadow(0 0 6px var(--cyan)); }

.nav-links { display: flex; align-items: center; gap: 30px; }
.nav-links a {
  position: relative;
  color: rgb(229 249 255 / 0.68);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.17em;
  text-decoration: none;
  text-transform: uppercase;
}
.nav-links a::after {
  width: 0;
  height: 1px;
  position: absolute;
  left: 0;
  bottom: -7px;
  content: "";
  background: var(--cyan);
  transition: width 180ms ease;
}
.nav-links a:hover { color: white; }
.nav-links a:hover::after { width: 100%; }

main, footer { position: relative; z-index: 1; }

.hero {
  width: var(--shell);
  min-height: 100svh;
  position: relative;
  display: grid;
  grid-template-columns: minmax(440px, 0.82fr) minmax(580px, 1.18fr);
  align-items: center;
  gap: clamp(50px, 6vw, 110px);
  margin: 0 auto;
  padding: 138px 0 108px;
}
.hero-copy { position: relative; z-index: 3; }
.kicker {
  margin: 0 0 28px;
  color: var(--cyan);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.19em;
  text-transform: uppercase;
}
.hero .kicker { display: flex; align-items: center; gap: 12px; }
.hero .kicker span { padding: 5px 8px 4px; color: var(--ink); background: var(--cyan); border-radius: 2px; }
.hero .kicker b { color: rgb(226 248 255 / 0.52); font-weight: 600; }

.hero h1,
.thesis h2,
.tour-heading h2,
.mobile-copy h2,
.system-heading h2,
.providers-heading h2,
.chatboy-heading h2,
.feature-heading h2,
.privacy h2,
.final-cta h2 {
  margin: 0;
  font-family: var(--display);
  font-weight: 500;
  letter-spacing: -0.055em;
}
.hero h1 {
  max-width: 790px;
  font-size: clamp(4.8rem, 7.1vw, 8rem);
  line-height: 0.8;
  text-transform: uppercase;
  text-shadow: 0 14px 40px rgb(0 15 55 / 0.3);
}
.hero h1 em,
.thesis h2 em,
.mobile-copy h2 em,
.chatboy-heading h2 em,
.privacy h2 em,
.final-cta h2 em {
  color: var(--coral);
  font-family: var(--serif);
  font-weight: 400;
  text-transform: none;
}
.hero h1 em { position: relative; display: inline-block; padding-right: 0.08em; font-size: 0.92em; line-height: 0.72; transform: rotate(-2deg); }
.hero h1 em::after {
  width: 72%;
  height: 2px;
  position: absolute;
  left: 8%;
  bottom: -5px;
  content: "";
  background: var(--cyan);
  box-shadow: 0 0 14px var(--cyan);
  transform: rotate(1deg);
}
.hero-deck {
  max-width: 660px;
  margin: 38px 0 0;
  color: var(--mist);
  font-family: var(--serif);
  font-size: clamp(1.08rem, 1.35vw, 1.36rem);
  line-height: 1.55;
}
.hero-actions, .final-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 34px; }
.button {
  min-height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 14px 17px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-decoration: none;
  text-transform: uppercase;
  transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease, color 180ms ease;
}
.button-primary { min-width: 220px; color: var(--ink); background: var(--ice); box-shadow: 7px 7px 0 var(--coral); }
.button-primary:hover { transform: translate(3px, 3px); box-shadow: 4px 4px 0 var(--coral); }
.button-quiet { border-color: var(--line); color: var(--ice); background: rgb(212 248 255 / 0.04); }
.button-quiet:hover { background: rgb(212 248 255 / 0.11); transform: translateY(-2px); }

.privacy-note {
  max-width: 610px;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 13px;
  align-items: start;
  margin-top: 34px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.privacy-note p { margin: 0; color: rgb(225 248 255 / 0.56); font-size: 0.72rem; letter-spacing: 0.045em; line-height: 1.55; }
.privacy-note strong { color: var(--ice); }
.privacy-orb { width: 9px; height: 9px; margin-top: 5px; border: 1px solid var(--cyan); border-radius: 50%; box-shadow: inset 0 0 0 2px var(--deep), 0 0 10px var(--cyan); }

.hero-screen {
  --screen-rx: 0deg;
  --screen-ry: 0deg;
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 11px;
  border: 1px solid rgb(220 248 255 / 0.38);
  border-radius: 9px;
  background: linear-gradient(145deg, rgb(255 255 255 / 0.17), rgb(3 35 86 / 0.54));
  box-shadow:
    0 54px 100px rgb(0 11 45 / 0.46),
    0 0 0 10px rgb(184 242 255 / 0.035),
    inset 0 1px rgb(255 255 255 / 0.18);
  transform: perspective(1200px) rotateX(var(--screen-rx)) rotateY(var(--screen-ry)) rotate(1.4deg);
  transform-style: preserve-3d;
  transition: transform 180ms ease-out;
}
.hero-screen::before {
  width: 58%;
  height: 42%;
  position: absolute;
  right: -8%;
  top: -8%;
  z-index: -1;
  content: "";
  border-radius: 50%;
  background: rgb(91 213 255 / 0.25);
  filter: blur(60px);
}
.screen-chrome {
  height: 36px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 0 5px;
  color: rgb(224 248 255 / 0.58);
  font-size: 0.55rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.screen-chrome > span { display: flex; gap: 5px; }
.screen-chrome i { width: 6px; height: 6px; border: 1px solid currentColor; border-radius: 50%; }
.screen-chrome b { font-weight: 600; }
.screen-chrome em { justify-self: end; color: var(--cyan); font-style: normal; }
.hero-screen img { width: 100%; border: 1px solid rgb(222 249 255 / 0.17); border-radius: 4px; }
.hero-screen figcaption {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 12px 4px 2px;
  color: rgb(225 248 255 / 0.56);
  font-size: 0.58rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}
.hero-screen figcaption span { color: var(--cyan); }
.hero-screen figcaption b { color: var(--coral); }

.hero-index {
  position: absolute;
  inset: auto 0 30px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 18px;
  color: rgb(220 247 255 / 0.35);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.17em;
}
.hero-index i { height: 1px; background: var(--faint); }

.signal-strip { width: 100%; overflow: hidden; color: var(--ink); background: var(--cyan); border-block: 1px solid var(--ice); }
.signal-strip > div { width: max-content; display: flex; align-items: center; gap: 30px; padding: 12px 0 10px; font-size: 0.7rem; font-weight: 900; letter-spacing: 0.17em; animation: signal-run 28s linear infinite; }
.signal-strip b { color: var(--coral); font-size: 1rem; }
@keyframes signal-run { to { transform: translateX(-50%); } }

.section-shell { width: var(--shell); margin-inline: auto; position: relative; }
.section-mark {
  position: absolute;
  left: 0;
  top: 34px;
  color: rgb(222 247 255 / 0.34);
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.19em;
}

.thesis { padding: 180px 0 170px; }
.thesis-lead { margin-left: 22%; }
.thesis h2,
.tour-heading h2,
.mobile-copy h2,
.system-heading h2,
.providers-heading h2,
.chatboy-heading h2,
.feature-heading h2,
.privacy h2,
.final-cta h2 { font-size: clamp(4rem, 7.3vw, 8.1rem); line-height: 0.84; text-transform: uppercase; }
.thesis h2 em { display: inline-block; padding-left: 0.18em; }
.thesis-copy {
  max-width: 720px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 70px 8% 0 auto;
  color: var(--mist);
  font-family: var(--serif);
  font-size: 1.1rem;
}
.thesis-copy p { margin: 0; }
.principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 100px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.principles article { min-height: 320px; display: flex; flex-direction: column; padding: 24px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgb(214 248 255 / 0.025); }
.principles article:nth-child(2) { background: rgb(214 248 255 / 0.06); }
.principles article > span { color: var(--cyan); font-size: 0.62rem; letter-spacing: 0.15em; }
.principles h3 { margin: auto 0 14px; font-family: var(--display); font-size: clamp(2.5rem, 3.8vw, 4.4rem); font-weight: 500; line-height: 0.9; letter-spacing: -0.045em; text-transform: uppercase; }
.principles p { max-width: 370px; margin: 0; color: var(--mist); font-family: var(--serif); font-size: 0.96rem; }

.tour { padding: 170px 0 180px; }
.tour::before {
  position: absolute;
  inset: 0 calc(50% - 50vw);
  z-index: -1;
  content: "";
  background: linear-gradient(to bottom, rgb(4 46 104 / 0.52), rgb(1 20 53 / 0.16));
  border-block: 1px solid rgb(218 247 255 / 0.08);
}
.tour-heading { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 70px; align-items: end; margin: 0 0 100px 14%; }
.tour-heading .kicker { grid-column: 1 / -1; margin-bottom: -36px; }
.tour-heading > p:last-child { max-width: 420px; margin: 0 0 6px; color: var(--mist); font-family: var(--serif); font-size: 1.05rem; }
.demo { margin-top: 64px; }
.demo-wide { display: grid; grid-template-columns: minmax(320px, 0.62fr) minmax(600px, 1.38fr); gap: 50px; align-items: center; }
.demo-copy { position: relative; }
.demo-no { display: block; margin-bottom: 54px; color: rgb(218 247 255 / 0.28); font-family: var(--display); font-size: 5.5rem; line-height: 0.8; }
.eyebrow { margin: 0 0 16px; color: var(--cyan); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.17em; text-transform: uppercase; }
.demo-copy h3 { max-width: 540px; margin: 0; font-family: var(--display); font-size: clamp(3rem, 5vw, 5.8rem); font-weight: 500; line-height: 0.85; letter-spacing: -0.05em; text-transform: uppercase; }
.demo-copy > p:not(.eyebrow) { max-width: 520px; margin: 28px 0 0; color: var(--mist); font-family: var(--serif); font-size: 1.04rem; }
.demo-copy ul { margin: 30px 0 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.demo-copy li { padding: 11px 0 9px 20px; position: relative; border-bottom: 1px solid var(--line); color: rgb(229 249 255 / 0.7); font-size: 0.72rem; letter-spacing: 0.045em; }
.demo-copy li::before { position: absolute; left: 1px; content: "○"; color: var(--cyan); }

.video-frame, .thread-still {
  position: relative;
  margin: 0;
  padding: 10px;
  border: 1px solid rgb(224 249 255 / 0.26);
  border-radius: 8px;
  background: linear-gradient(145deg, rgb(221 249 255 / 0.12), rgb(2 31 77 / 0.56));
  box-shadow: 0 36px 90px rgb(0 11 40 / 0.38), inset 0 1px rgb(255 255 255 / 0.1);
}
.video-frame video, .thread-still img { width: 100%; border: 1px solid rgb(223 249 255 / 0.12); border-radius: 4px; background: #052a65; }
.video-frame video { aspect-ratio: 16 / 9; }
.video-frame figcaption {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 10px 3px 1px;
  color: rgb(225 248 255 / 0.45);
  font-size: 0.56rem;
  font-style: normal;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.video-frame figcaption b { color: var(--cyan); font-weight: 600; }
.video-toggle {
  position: absolute;
  right: 22px;
  bottom: 48px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 9px 6px;
  border: 1px solid rgb(222 248 255 / 0.45);
  border-radius: 4px;
  color: var(--ice);
  background: rgb(1 25 66 / 0.78);
  box-shadow: inset 0 1px rgb(255 255 255 / 0.1);
  cursor: pointer;
  font-size: 0.57rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
}
.video-toggle:hover { background: rgb(9 83 158 / 0.9); }
.video-toggle b { font-weight: 700; }

.demo-thread { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 70px; align-items: center; margin-top: 160px; }
.thread-still { transform: rotate(-1deg); }
.thread-still figcaption { max-width: 500px; padding: 13px 5px 3px; color: rgb(225 248 255 / 0.47); font-family: var(--serif); font-size: 0.76rem; font-style: italic; }
.quote-chip { width: fit-content; margin-top: 36px; padding: 12px 14px 10px; border-left: 2px solid var(--coral); color: var(--cyan); background: rgb(216 248 255 / 0.05); font-size: 0.66rem; font-weight: 700; letter-spacing: 0.11em; text-transform: uppercase; }

.demo-split { display: grid; grid-template-columns: 0.58fr 1.42fr; gap: 80px; align-items: end; margin: 170px 4% 0 10%; }
.video-frame-compact { transform: rotate(1deg); }
.text-link { width: fit-content; display: block; margin-top: 30px; padding-bottom: 4px; border-bottom: 1px solid var(--cyan); color: var(--cyan); font-size: 0.65rem; font-weight: 800; letter-spacing: 0.13em; text-decoration: none; text-transform: uppercase; }

.mobile-story {
  min-height: 980px;
  position: relative;
  display: grid;
  grid-template-columns: minmax(320px, 0.75fr) minmax(440px, 1.25fr);
  align-items: center;
  gap: clamp(60px, 9vw, 160px);
  padding: 130px max(28px, calc((100vw - 1320px) / 2));
  overflow: hidden;
  color: var(--ink);
  background: var(--cyan);
}
.mobile-story::before { width: 60vw; height: 60vw; position: absolute; left: -22vw; top: -18vw; content: ""; border: 1px solid rgb(3 35 86 / 0.14); border-radius: 50%; box-shadow: 0 0 0 90px rgb(3 35 86 / 0.025), 0 0 0 180px rgb(3 35 86 / 0.02); }
.mobile-orbit { width: 72%; height: 23%; position: absolute; left: -7%; bottom: 16%; border: 2px solid rgb(3 35 86 / 0.19); border-radius: 50%; transform: rotate(-15deg); }
.phone {
  width: min(390px, 80vw);
  position: relative;
  justify-self: center;
  padding: 20px 12px 14px;
  border: 1px solid rgb(231 251 255 / 0.7);
  border-radius: 38px;
  background: #062e6c;
  box-shadow: 0 42px 80px rgb(1 27 65 / 0.3), 16px 18px 0 var(--coral);
  transform: rotate(-3deg);
}
.phone::before { position: absolute; inset: 7px; content: ""; border: 1px solid rgb(255 255 255 / 0.14); border-radius: 31px; pointer-events: none; }
.phone-speaker { width: 54px; height: 4px; position: absolute; left: 50%; top: 9px; z-index: 2; border-radius: 999px; background: rgb(200 245 255 / 0.32); transform: translateX(-50%); }
.phone img { width: 100%; border-radius: 26px; }
.mobile-copy { max-width: 720px; }
.mobile-copy .kicker { color: #0753a5; }
.mobile-copy h2 { color: var(--ink); }
.mobile-copy h2 em { color: #a83e2a; }
.mobile-copy > p:not(.kicker) { max-width: 660px; margin: 40px 0 0; font-family: var(--serif); font-size: 1.22rem; }
.mobile-copy dl { margin: 50px 0 0; border-top: 1px solid rgb(3 35 86 / 0.28); }
.mobile-copy dl div { display: grid; grid-template-columns: 0.38fr 0.62fr; gap: 28px; padding: 16px 0 13px; border-bottom: 1px solid rgb(3 35 86 / 0.28); }
.mobile-copy dt { font-size: 0.68rem; font-weight: 900; letter-spacing: 0.14em; text-transform: uppercase; }
.mobile-copy dd { margin: 0; font-family: var(--serif); font-size: 0.92rem; }

.system { padding: 180px 0; }
.system-heading { display: grid; grid-template-columns: 1fr 2fr; align-items: end; margin: 0 5% 90px 18%; }
.system-heading .kicker { align-self: start; }
.lifecycle { margin: 0; padding: 0; border-top: 1px solid var(--line); list-style: none; counter-reset: lifecycle; }
.lifecycle li {
  min-height: 190px;
  display: grid;
  grid-template-columns: 0.15fr 0.32fr 0.43fr 0.1fr;
  gap: 28px;
  align-items: center;
  position: relative;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
  transition: background 180ms ease, padding 180ms ease;
}
.lifecycle li:hover { padding-inline: 22px; background: rgb(216 248 255 / 0.055); }
.life-no { color: rgb(221 248 255 / 0.32); font-family: var(--display); font-size: 4.4rem; line-height: 1; }
.life-verb { margin: 0 0 8px; color: var(--coral); font-size: 0.58rem; font-weight: 800; letter-spacing: 0.18em; text-transform: uppercase; }
.lifecycle h3 { margin: 0; font-family: var(--display); font-size: clamp(2rem, 3.5vw, 4rem); font-weight: 500; line-height: 0.9; letter-spacing: -0.04em; text-transform: uppercase; }
.lifecycle li > p { max-width: 520px; margin: 0; color: var(--mist); font-family: var(--serif); }
.life-icon { justify-self: end; color: var(--cyan); font-family: var(--serif); font-size: 2.8rem; }

.providers { padding: 180px 0 170px; }
.providers-heading { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: 70px; align-items: end; margin: 0 0 90px; }
.providers-heading .kicker { grid-column: 1 / -1; margin-bottom: -36px; }
.providers-heading > p:last-child { max-width: 440px; margin: 0 0 6px; color: var(--mist); font-family: var(--serif); font-size: 1.05rem; }
.provider-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.provider-card {
  min-height: 400px;
  display: flex;
  flex-direction: column;
  padding: 26px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgb(214 248 255 / 0.03);
}
.provider-card:nth-child(2) { background: rgb(214 248 255 / 0.06); }
.provider-card .eyebrow { margin-bottom: 20px; }
.cli-chip {
  width: fit-content;
  max-width: 100%;
  padding: 9px 11px 8px;
  border: 1px solid rgb(186 243 255 / 0.3);
  border-radius: 4px;
  color: var(--cyan);
  background: rgb(1 22 58 / 0.72);
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.02em;
  overflow-wrap: anywhere;
}
.provider-card h3 { margin: auto 0 14px; padding-top: 44px; font-family: var(--display); font-size: clamp(2.4rem, 3.4vw, 3.9rem); font-weight: 500; line-height: 0.9; letter-spacing: -0.045em; text-transform: uppercase; }
.provider-card > p:not(.eyebrow) { max-width: 400px; margin: 0 0 22px; color: var(--mist); font-family: var(--serif); font-size: 0.95rem; }
.model-chips { display: flex; flex-wrap: wrap; gap: 7px; margin: 0; padding: 0; list-style: none; }
.model-chips li { padding: 5px 9px 4px; border: 1px solid var(--line); border-radius: 999px; color: rgb(229 249 255 / 0.75); font-size: 0.62rem; font-weight: 700; letter-spacing: 0.09em; text-transform: uppercase; }
.provider-facts { margin: 90px 0 0 22%; padding: 0; border-top: 1px solid var(--line); }
.provider-facts > div { display: grid; grid-template-columns: 0.3fr 0.7fr; gap: 30px; padding: 22px 0 19px; border-bottom: 1px solid var(--line); }
.provider-facts dt { color: var(--cyan); font-size: 0.66rem; font-weight: 800; letter-spacing: 0.15em; text-transform: uppercase; }
.provider-facts dd { max-width: 640px; margin: 0; color: var(--mist); font-family: var(--serif); }

.chatboy { position: relative; padding: 170px 0 180px; background: linear-gradient(160deg, #052d6e, #021c4c 55%, #031536); border-block: 1px solid rgb(220 248 255 / 0.1); }
.chatboy-heading { max-width: 940px; margin-bottom: 90px; }
.chatboy-heading > p:last-child { max-width: 620px; margin: 40px 0 0; color: var(--mist); font-family: var(--serif); font-size: 1.1rem; }
.chatboy-body { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: clamp(50px, 6vw, 110px); align-items: start; }
.chat-demo {
  position: sticky;
  top: 110px;
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin: 0;
  padding: 22px 20px 14px;
  border: 1px solid rgb(224 249 255 / 0.26);
  border-radius: 10px;
  background: linear-gradient(150deg, rgb(221 249 255 / 0.09), rgb(2 26 66 / 0.6));
  box-shadow: 0 36px 90px rgb(0 11 40 / 0.38), inset 0 1px rgb(255 255 255 / 0.1);
}
.chat-line { position: relative; max-width: 84%; }
.chat-line p { margin: 0; padding: 11px 13px 10px; border-radius: 10px; font-size: 0.85rem; line-height: 1.45; }
.chat-line.you { align-self: flex-end; }
.chat-line.you p { color: var(--ink); background: var(--cyan); border-bottom-right-radius: 3px; }
.chat-line.bot { align-self: flex-start; }
.chat-line.bot p { color: var(--ice); background: rgb(219 248 255 / 0.1); border: 1px solid rgb(222 248 255 / 0.2); border-bottom-left-radius: 3px; }
.chat-react { position: absolute; right: -6px; bottom: -12px; padding: 2px 5px; border: 1px solid var(--line); border-radius: 999px; background: var(--deep); font-size: 0.72rem; line-height: 1.3; }
.chat-note { margin: 2px 0; align-self: center; color: rgb(224 248 255 / 0.45); font-size: 0.6rem; font-weight: 700; letter-spacing: 0.13em; text-transform: uppercase; }
.chat-demo figcaption { margin-top: 8px; padding-top: 12px; border-top: 1px solid var(--line); color: rgb(225 248 255 / 0.47); font-family: var(--serif); font-size: 0.74rem; font-style: italic; }
.chat-facts { border-top: 1px solid var(--line); }
.chat-facts > div { padding: 26px 0 24px; border-bottom: 1px solid var(--line); }
.chat-facts h3 { margin: 0 0 12px; font-family: var(--display); font-size: clamp(1.9rem, 2.6vw, 2.9rem); font-weight: 500; line-height: 0.9; letter-spacing: -0.04em; text-transform: uppercase; }
.chat-facts p { max-width: 640px; margin: 0; color: var(--mist); font-family: var(--serif); font-size: 0.98rem; }

.feature-field { padding: 160px 0 180px; background: linear-gradient(155deg, #063c86, #05265b 60%, #031a42); border-block: 1px solid rgb(220 248 255 / 0.1); }
.feature-heading { margin-bottom: 80px; }
.feature-heading h2 { margin-left: 14%; }
.feature-heading .kicker { margin-left: 14%; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.feature-card {
  min-height: 420px;
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 28px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgb(214 248 255 / 0.035);
  transition: transform 180ms ease, background 180ms ease;
}
.feature-card:hover { z-index: 2; transform: translateY(-7px); background: rgb(214 248 255 / 0.08); }
.feature-card-large { grid-column: span 2; }
.feature-glyph { position: absolute; right: 24px; top: 18px; color: rgb(186 243 255 / 0.24); font-family: var(--serif); font-size: 7rem; line-height: 1; }
.feature-card .eyebrow { position: relative; z-index: 1; }
.feature-card h3 { max-width: 720px; margin: auto 0 22px; font-family: var(--display); font-size: clamp(2.8rem, 4.6vw, 5.3rem); font-weight: 500; line-height: 0.84; letter-spacing: -0.045em; text-transform: uppercase; }
.feature-card:not(.feature-card-large) h3 { font-size: clamp(2.5rem, 3.6vw, 4.2rem); }
.feature-card p:last-child { max-width: 620px; margin: 0; color: var(--mist); font-family: var(--serif); }
.feature-card-coral { color: var(--ink); background: var(--coral); }
.feature-card-coral .eyebrow, .feature-card-coral p:last-child { color: rgb(3 27 61 / 0.75); }
.feature-card-coral .feature-glyph { color: rgb(3 27 61 / 0.18); }
.feature-card-coral:hover { background: #ff987b; }
.feature-card-light { color: var(--ink); background: var(--cyan); }
.feature-card-light .eyebrow, .feature-card-light p:last-child { color: rgb(3 27 61 / 0.72); }
.feature-card-light .feature-glyph { color: rgb(3 27 61 / 0.15); }
.feature-card-light:hover { background: #d6f8ff; }

.privacy {
  min-height: 900px;
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 90px;
  align-items: center;
  padding: 150px max(28px, calc((100vw - 1440px) / 2));
  overflow: hidden;
}
.privacy-copy { position: relative; z-index: 2; }
.privacy-copy > p:last-child { max-width: 720px; margin: 46px 0 0; color: var(--mist); font-family: var(--serif); font-size: 1.16rem; }
.privacy-copy strong { color: var(--cyan); }
.privacy-proof { position: relative; z-index: 2; border-top: 1px solid var(--line); }
.privacy-proof > div { display: grid; grid-template-columns: auto 1fr; gap: 19px; padding: 22px 0 19px; border-bottom: 1px solid var(--line); }
.privacy-proof span { color: var(--coral); font-size: 0.62rem; letter-spacing: 0.14em; }
.privacy-proof p { margin: 0; color: var(--mist); font-family: var(--serif); }
.privacy-proof strong { display: block; margin-bottom: 3px; color: var(--ice); font-family: var(--body); font-size: 0.66rem; letter-spacing: 0.13em; text-transform: uppercase; }
.privacy-rings { width: 720px; height: 720px; position: absolute; right: -280px; top: 50%; transform: translateY(-50%); }
.privacy-rings i { position: absolute; inset: 0; border: 1px solid rgb(185 243 255 / 0.12); border-radius: 50%; }
.privacy-rings i:nth-child(2) { inset: 15%; border-color: rgb(185 243 255 / 0.18); }
.privacy-rings i:nth-child(3) { inset: 31%; border-color: rgb(255 138 104 / 0.32); box-shadow: 0 0 80px rgb(57 200 255 / 0.08); }

.final-cta {
  min-height: 760px;
  display: grid;
  grid-template-columns: 1fr 0.4fr;
  align-items: center;
  gap: 80px;
  padding: 120px max(28px, calc((100vw - 1440px) / 2));
  color: var(--ink);
  background: var(--coral);
}
.final-cta .kicker { color: var(--ink); }
.final-cta h2 em { color: #064b98; }
.button-dark { color: var(--ice); background: var(--ink); box-shadow-color: var(--cyan); }
.button-dark-quiet { border-color: rgb(3 27 61 / 0.35); color: var(--ink); background: rgb(255 255 255 / 0.12); }
.button-dark-quiet:hover { background: rgb(255 255 255 / 0.24); }
.final-mark { justify-self: end; }
.final-mark svg { width: min(330px, 24vw); fill: none; stroke: var(--ink); stroke-width: 1.4; opacity: 0.9; }
.final-mark .brand-core { fill: var(--cyan); stroke: var(--ink); }

footer {
  min-height: 120px;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  padding: 20px max(28px, calc((100vw - 1440px) / 2));
  color: var(--ink);
  background: var(--cyan);
  border-top: 1px solid rgb(3 27 61 / 0.18);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.footer-brand { font-size: 0.82rem; }
.footer-brand strong { color: #064b98; }
footer p { margin: 0; text-align: center; }
footer > a:last-child { justify-self: end; text-underline-offset: 4px; }

.motion-ready [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 760ms cubic-bezier(0.2, 0.7, 0.2, 1), transform 760ms cubic-bezier(0.2, 0.7, 0.2, 1);
}
.motion-ready [data-reveal].is-visible { opacity: 1; transform: none; }
.motion-ready .principles.is-visible article:nth-child(2),
.motion-ready .feature-grid .feature-card:nth-child(2) { transition-delay: 80ms; }
.motion-ready .principles.is-visible article:nth-child(3),
.motion-ready .feature-grid .feature-card:nth-child(3) { transition-delay: 160ms; }

@media (max-width: 1180px) {
  :root { --shell: min(100% - 40px, 1160px); }
  .site-nav { grid-template-columns: 1fr auto; }
  .nav-links { display: none; }
  .hero { grid-template-columns: minmax(360px, 0.8fr) minmax(480px, 1.2fr); gap: 40px; }
  .hero h1 { font-size: clamp(4.4rem, 7.4vw, 6.2rem); }
  .tour-heading { margin-left: 8%; }
  .demo-wide { grid-template-columns: 0.68fr 1.32fr; }
  .demo-thread { grid-template-columns: 1.25fr 0.75fr; gap: 48px; }
  .system-heading { margin-left: 10%; }
  .provider-card { min-height: 350px; }
  .provider-facts { margin-left: 12%; }
  .feature-card { min-height: 360px; }
}

@media (max-width: 920px) {
  :root { --shell: min(100% - 32px, 860px); }
  .site-nav, .site-nav.is-scrolled { width: calc(100vw - 24px); height: 68px; top: 9px; padding-inline: 13px; border: 1px solid rgb(224 249 255 / 0.18); border-radius: 7px; background: rgb(2 27 71 / 0.84); backdrop-filter: blur(16px); }
  .brand { gap: 8px; font-size: 0.8rem; letter-spacing: 0.2em; }
  .brand svg { width: 29px; height: 29px; }
  .hero { grid-template-columns: 1fr; padding-top: 126px; }
  .hero-copy { max-width: 760px; }
  .hero h1 { font-size: clamp(5rem, 13vw, 8rem); }
  .hero-screen { width: min(850px, 94%); justify-self: end; }
  .hero-index { position: static; grid-column: 1; margin-top: 16px; }
  .thesis-lead, .tour-heading, .system-heading, .feature-heading h2, .feature-heading .kicker { margin-left: 0; }
  .thesis-copy { margin-right: 0; }
  .tour-heading { grid-template-columns: 1fr; }
  .tour-heading .kicker { margin-bottom: -25px; }
  .tour-heading > p:last-child { max-width: 600px; }
  .demo-wide, .demo-thread, .demo-split { grid-template-columns: 1fr; gap: 48px; }
  .demo-wide .demo-copy { max-width: 700px; }
  .demo-thread { margin-top: 120px; }
  .demo-thread .demo-copy { grid-row: 1; }
  .demo-split { margin: 130px 0 0; }
  .mobile-story { min-height: 900px; grid-template-columns: 0.75fr 1.25fr; gap: 55px; }
  .mobile-copy h2 { font-size: clamp(3.8rem, 8.7vw, 6rem); }
  .system-heading { grid-template-columns: 1fr; gap: 20px; }
  .lifecycle li { grid-template-columns: 0.16fr 0.4fr 0.44fr; }
  .life-icon { display: none; }
  .providers-heading { grid-template-columns: 1fr; gap: 34px; }
  .providers-heading .kicker { margin-bottom: -14px; }
  .provider-grid { grid-template-columns: 1fr; }
  .provider-card { min-height: 300px; }
  .provider-facts { margin-left: 0; }
  .chatboy-body { grid-template-columns: 1fr; }
  .chat-demo { position: static; max-width: 560px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card-large { grid-column: span 2; }
  .privacy { grid-template-columns: 1fr; align-content: center; }
  .privacy-proof { max-width: 680px; }
}

@media (max-width: 680px) {
  :root { --shell: calc(100% - 28px); }
  body { font-size: 16px; }
  .site-nav, .site-nav.is-scrolled { width: calc(100vw - 18px); top: 7px; }
  .brand span { letter-spacing: 0.15em; }
  .hero { min-height: auto; gap: 52px; padding: 118px 0 76px; }
  .hero .kicker { align-items: flex-start; flex-direction: column; gap: 8px; }
  .hero h1 { font-size: clamp(4.2rem, 20vw, 6.2rem); }
  .hero-deck { margin-top: 30px; }
  .hero-actions { align-items: stretch; flex-direction: column; }
  .button { width: calc(100% - 7px); }
  .hero-screen { width: 106%; justify-self: center; padding: 7px; transform: rotate(1deg); }
  .screen-chrome { height: 29px; }
  .hero-screen figcaption { padding-inline: 2px; }
  .hero-index span:last-child { display: none; }
  .hero-index { grid-template-columns: auto 1fr; }
  .signal-strip > div { animation-duration: 20s; }
  .section-mark { position: static; margin-bottom: 50px; }
  .thesis, .tour, .system, .providers, .chatboy { padding-block: 110px; }
  .thesis h2, .tour-heading h2, .system-heading h2, .providers-heading h2, .chatboy-heading h2, .feature-heading h2, .privacy h2, .final-cta h2 { font-size: clamp(3.7rem, 18vw, 5.5rem); }
  .thesis-copy { grid-template-columns: 1fr; gap: 20px; margin-top: 48px; }
  .principles { grid-template-columns: 1fr; margin-top: 70px; }
  .principles article { min-height: 270px; }
  .tour-heading { margin-bottom: 70px; }
  .demo { margin-top: 50px; }
  .demo-no { margin-bottom: 32px; font-size: 4rem; }
  .demo-copy h3 { font-size: clamp(3rem, 15vw, 4.6rem); }
  .video-frame, .thread-still { width: 105%; justify-self: center; padding: 6px; }
  .video-toggle { right: 14px; bottom: 42px; }
  .demo-thread, .demo-split { margin-top: 100px; }
  .mobile-story { grid-template-columns: 1fr; gap: 70px; padding-block: 100px; }
  .phone { width: min(330px, 84vw); }
  .mobile-copy { grid-row: 1; }
  .mobile-copy h2 { font-size: clamp(3.7rem, 18vw, 5.4rem); }
  .mobile-copy > p:not(.kicker) { font-size: 1.07rem; }
  .mobile-copy dl div { grid-template-columns: 1fr; gap: 5px; }
  .system-heading { margin-bottom: 60px; }
  .lifecycle li { min-height: auto; grid-template-columns: 0.18fr 0.82fr; gap: 20px; align-items: start; padding-block: 28px; }
  .lifecycle li:hover { padding-inline: 0; }
  .life-no { font-size: 2.8rem; }
  .lifecycle li > p { grid-column: 2; }
  .providers-heading { margin-bottom: 64px; }
  .provider-facts { margin-top: 64px; }
  .provider-facts > div { grid-template-columns: 1fr; gap: 8px; }
  .chatboy-heading { margin-bottom: 60px; }
  .chat-line { max-width: 92%; }
  .feature-field { padding-block: 110px; }
  .feature-heading { margin-bottom: 55px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-card, .feature-card-large { min-height: 340px; grid-column: auto; }
  .feature-card h3, .feature-card:not(.feature-card-large) h3 { font-size: clamp(2.8rem, 13vw, 4.2rem); }
  .privacy { min-height: auto; gap: 60px; padding-block: 110px; }
  .privacy-copy > p:last-child { font-size: 1.02rem; }
  .privacy-rings { width: 440px; height: 440px; right: -260px; }
  .final-cta { min-height: 680px; grid-template-columns: 1fr; padding-block: 100px; }
  .final-mark { display: none; }
  footer { grid-template-columns: 1fr auto; }
  footer p { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
  .motion-ready [data-reveal] { opacity: 1; transform: none; }
  .hero-screen { transform: rotate(1deg); }
}