:root {
  --ink: #071225;
  --ink-2: #0b1d39;
  --paper: #f5f7fb;
  --white: #ffffff;
  --slate: #506078;
  --line: #cbd4e1;
  --blue: #285bff;
  --blue-dark: #112a52;
  --sky: #c7d9ff;
  --mint: #a8f4cf;
  --soft: #e8eef8;
  --shell: min(1220px, calc(100% - 56px));
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.55;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button { font: inherit; }

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--white);
  padding: 10px 14px;
  z-index: 100;
}
.skip-link:focus { left: 12px; top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 12;
  background: rgba(245, 247, 251, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.header-inner {
  height: 78px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.brand img {
  width: 43px;
  height: 43px;
  object-fit: contain;
}

.brand-copy {
  display: grid;
  line-height: 1.15;
}

.brand-copy strong {
  font-size: .8rem;
}

.brand-copy small {
  margin-top: 4px;
  font-size: .62rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--slate);
}

.main-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: .9rem;
}

.main-nav a {
  padding: 8px 0;
  transition: color .2s ease;
}

.main-nav a:hover,
.text-link:hover,
.partner-actions a:hover,
.footer-meta a:hover {
  color: var(--blue);
}

.header-cta {
  font-size: .9rem;
  font-weight: 700;
  white-space: nowrap;
}

.header-cta span,
.partner-actions span,
.button span,
.text-link span {
  margin-left: 8px;
  font-size: 1.15rem;
}

.menu-button {
  display: none;
  border: 1px solid var(--line);
  background: transparent;
  border-radius: 8px;
  padding: 8px 12px;
  cursor: pointer;
}

.hero {
  background: #f1f3f5;
  color: var(--ink);
  overflow: hidden;
}

.hero-grid {
  min-height: 620px;
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 70px;
  align-items: center;
}

.hero-copy {
  padding-top: 50px;
  padding-bottom: 52px;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 18px;
  font-size: .7rem;
  letter-spacing: .095em;
  text-transform: uppercase;
  font-weight: 700;
  color: #667085;
}

.eyebrow span {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--blue);
  box-shadow: 0 0 0 4px rgba(40, 91, 255, 0.18);
}

.hero h1,
.section-heading h2,
.split-header h2,
.ai-copy h2,
.sdk-heading h2,
.partner h2,
.answers h2,
.footer-top h2 {
  margin: 0;
  letter-spacing: -0.075em;
  line-height: .96;
}

.hero h1 {
  font-size: clamp(3.2rem, 6vw, 6rem);
}

.hero h1 em {
  color: #55816e;
  font-style: normal;
}

.hero-intro {
  max-width: 560px;
  margin: 26px 0 0;
  color: #506078;
  font-size: 1.08rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 26px;
  margin-top: 30px;
}

.button {
  min-height: 52px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  padding: 0 22px;
  font-weight: 700;
  transition: transform .2s ease, opacity .2s ease;
}

.button:hover { transform: translateY(-1px); }

.primary {
  background: var(--mint);
  color: var(--ink);
}

.light {
  background: var(--white);
  color: var(--ink);
}

.text-link {
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1px solid #aeb8c5;
  padding-bottom: 5px;
}

.metric-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(120px, 1fr));
  max-width: 500px;
  gap: 20px;
  margin-top: 36px;
  padding-top: 28px;
  border-top: 1px solid #cbd4e1;
}

.metric-row div {
  display: grid;
  gap: 6px;
}

.metric-row strong {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
  letter-spacing: -0.08em;
  line-height: 1;
}

.metric-row span {
  color: #667085;
  font-size: .74rem;
  line-height: 1.4;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.hero-visual {
  display: flex;
  align-items: stretch;
  justify-content: center;
}

.signal-room {
  width: min(100%, 560px);
  min-height: 520px;
  background: #ffffff;
  border: 1px solid #d9dee6;
  padding: 22px 22px 18px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.room-header,
.room-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: .72rem;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: #667085;
}

.room-header b {
  color: #55816e;
  font-size: .7rem;
}

.room-header b i {
  display: inline-block;
  width: 8px;
  height: 8px;
  background: #71a58a;
  border-radius: 50%;
  margin-right: 7px;
}

.signal-map {
  position: relative;
  flex: 1;
  min-height: 420px;
  margin: 12px 0 16px;
}

.ring {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid #e1e5eb;
  border-radius: 50%;
}

.ring-one { width: 150px; height: 150px; }
.ring-two { width: 290px; height: 290px; }
.ring-three { width: 440px; height: 440px; }

.core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  border-radius: 50%;
  background: #f1f3f5;
  color: var(--ink);
  display: grid;
  place-content: center;
  text-align: center;
  z-index: 2;
  box-shadow: 0 0 0 10px #ffffff, 0 0 0 11px #d9dee6;
}

.core small,
.core span { color: var(--slate); font-size: .64rem; }
.core strong {
  display: block;
  font-size: 2.7rem;
  line-height: 1;
  letter-spacing: -0.08em;
}

.signal {
  position: absolute;
  z-index: 2;
  min-width: 116px;
  padding: 11px 12px;
  background: #f8f9fb;
  border: 1px solid #d9dee6;
  color: var(--ink);
}

.signal-icon {
  display: block;
  width: 18px;
  height: 18px;
  margin-bottom: 7px;
  color: #55816e;
}

.signal-icon svg {
  display: block;
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.signal strong,
.signal span { display: block; }
.signal strong { margin: 4px 0; font-size: .8rem; }
.signal span { font-size: .68rem; color: #667085; }

.call { left: 2%; top: 14%; }
.video { left: 35%; top: 5%; }
.crm { right: 2%; top: 23%; }
.ai { right: 6%; bottom: 14%; }
.flow { left: 4%; bottom: 18%; }
.social { left: 50%; bottom: 0; transform: translateX(-50%); }

.connection-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.connection-lines path {
  fill: none;
  stroke: #9ca99f;
  stroke-width: .45;
  stroke-linecap: round;
}

.room-footer {
  border-top: 1px solid #e1e5eb;
  padding-top: 15px;
}

.room-footer strong {
  font-size: 1.5rem;
  color: var(--ink);
  letter-spacing: -0.06em;
}

.room-footer small {
  font-size: .62rem;
  color: #667085;
}

.proof {
  display: grid;
  grid-template-columns: repeat(3, 1fr) 1.65fr;
  border: 1px solid var(--line);
  border-top: 0;
  background: var(--white);
}

.proof > div,
.proof > p {
  margin: 0;
  padding: 26px 24px;
  border-right: 1px solid var(--line);
}

.proof > p {
  border-right: none;
  color: var(--slate);
  align-self: end;
  line-height: 1.6;
}

.proof strong,
.proof span { display: block; }
.proof strong {
  font-size: 2rem;
  line-height: 1;
  letter-spacing: -0.07em;
}
.proof span {
  margin-top: 7px;
  font-size: .78rem;
  color: var(--slate);
}

.section {
  padding: 110px 0;
}

.section-heading {
  max-width: 760px;
}

.section-heading h2,
.split-header h2,
.ai-copy h2,
.sdk-heading h2,
.partner h2,
.answers h2,
.footer-top h2 {
  font-size: clamp(2.4rem, 4.5vw, 4.6rem);
  line-height: 0.96;
  letter-spacing: -0.075em;
}

.section-heading > p:last-child,
.split-header > p,
.ai-copy > p,
.answer-intro,
.integration-disclaimer,
.sdk-note,
.sdk-heading > p,
.partner p,
.footer-meta {
  color: var(--slate);
}

.section-heading > p:last-child,
.ai-copy > p,
.answer-intro {
  margin-top: 22px;
  line-height: 1.7;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: 54px;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.feature-card {
  min-height: 300px;
  background: var(--white);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding: 25px 22px 26px;
  display: flex;
  flex-direction: column;
}

.feature-card.dark {
  background: var(--ink);
  color: var(--white);
}

.feature-card span {
  color: var(--blue);
  font-weight: 700;
  font-size: .72rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.feature-card.dark span { color: var(--mint); }

.feature-card h3 {
  font-size: 1.7rem;
  line-height: 1.1;
  letter-spacing: -0.05em;
  margin: 56px 0 12px;
}

.feature-card p {
  margin: 0;
  line-height: 1.7;
  color: var(--slate);
}

.feature-card.dark p { color: #c6d1e4; }

.section-surface {
  background: #e8eef8;
}

.split-header {
  display: flex;
  justify-content: space-between;
  gap: 50px;
  align-items: end;
}

.split-header > div { max-width: 760px; }

.split-header > p {
  max-width: 320px;
  margin: 0;
  line-height: 1.7;
}

.capability-list {
  margin-top: 52px;
  border-top: 1px solid rgba(66, 86, 119, 0.3);
}

.capability-list article {
  display: grid;
  grid-template-columns: 1.25fr 1.6fr 50px;
  gap: 30px;
  align-items: center;
  border-bottom: 1px solid rgba(66, 86, 119, 0.3);
  padding: 26px 0;
}

.capability-list b {
  font-size: 1.15rem;
  letter-spacing: -0.04em;
}

.capability-list span {
  line-height: 1.6;
  color: var(--slate);
}

.capability-list i {
  justify-self: end;
  font-style: normal;
  color: var(--blue);
  font-size: .74rem;
  font-weight: 700;
}

.ai-layout {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  align-items: center;
  gap: 90px;
  width: var(--shell);
  margin: 0 auto;
}

.ai-copy > p,
.ai-copy > ul {
  color: var(--slate);
}

.ai-copy > p + p { margin-top: 18px; }

.check-list {
  margin: 26px 0 0;
  padding-left: 18px;
  list-style: none;
  display: grid;
  gap: 12px;
}

.check-list li {
  position: relative;
  padding-left: 28px;
  color: var(--ink);
  font-weight: 600;
}

.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--mint);
  color: var(--ink);
  display: grid;
  place-items: center;
  font-size: .75rem;
}

.ai-map {
  background: var(--ink);
  color: var(--white);
  padding: 26px;
}

.map-title {
  margin-bottom: 24px;
  font-size: 1.1rem;
  font-weight: 700;
}

.map-layer {
  padding: 18px 18px 16px;
  border: 1px solid #52647e;
}

.map-layer small,
.map-layer strong {
  display: block;
}

.map-layer small {
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #afd0ff;
}

.map-layer strong {
  margin-top: 7px;
  font-size: 1rem;
  line-height: 1.5;
}

.front { background: #122646; }
.middle {
  background: var(--blue);
  border-color: var(--blue);
}
.middle small { color: #dfe9ff; }
.base { background: #17243a; }

.map-line {
  height: 24px;
  margin-left: 24px;
  border-left: 1px solid #77879f;
}

.ai-map > p {
  margin: 24px 0 0;
  font-size: .82rem;
  color: #b7c4d7;
  line-height: 1.6;
}

.sdk-section {
  background: var(--soft);
  padding: 120px 0;
}

.sdk-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 60px;
}

.sdk-heading > div { max-width: 760px; }
.sdk-heading > p {
  max-width: 320px;
  margin: 0;
  line-height: 1.7;
}

.sdk-workspace {
  max-width: 850px;
  margin: 52px auto 0;
  background: #071225;
  border: 1px solid #9db0cd;
  box-shadow: 18px 18px 0 #c7d9ff;
  color: var(--white);
}

.sdk-window-bar,
.sdk-window-footer {
  display: flex;
  justify-content: space-between;
  gap: 15px;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid #405371;
  font-size: .74rem;
  color: #b9c9df;
}

.sdk-window-bar span {
  color: var(--white);
  font-weight: 700;
}

.sdk-window-bar i {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  margin-right: 7px;
}

.sdk-conversation,
.sdk-guidance,
.sdk-suggestion {
  margin: 16px 18px;
  padding: 17px;
  background: #102646;
  border: 1px solid #405371;
}

.sdk-conversation small,
.sdk-guidance small,
.sdk-suggestion small {
  display: block;
  font-size: .66rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #adc0de;
}

.sdk-conversation p,
.sdk-suggestion p { margin: 10px 0 6px; line-height: 1.6; }
.sdk-conversation span,
.sdk-guidance span { font-size: .75rem; color: var(--mint); }

.sdk-guidance {
  display: flex;
  gap: 12px;
  background: #102d3a;
  border-color: #2f8b77;
}

.sdk-guidance > b {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--mint);
  color: var(--ink);
  font-size: 1rem;
}

.sdk-guidance p { margin: 7px 0; line-height: 1.5; }

.sdk-suggestion { margin-left: 50px; }

.sdk-window-footer { border-top: 1px solid #405371; border-bottom: none; }
.sdk-window-footer b { white-space: nowrap; color: var(--mint); }

.sdk-points {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
  margin-top: 44px;
  padding-top: 26px;
  border-top: 1px solid rgba(66, 86, 119, 0.3);
}

.sdk-points h3 {
  margin: 0;
  font-size: 1.1rem;
  letter-spacing: -0.035em;
}

.sdk-points p { margin: 10px 0 0; color: var(--slate); line-height: 1.7; }

.sdk-note {
  margin: 18px 0 0;
  font-size: .76rem;
  line-height: 1.6;
}

.partner {
  display: grid;
  grid-template-columns: 115px 1fr auto;
  align-items: center;
  gap: 38px;
  background: var(--sky);
  padding: 42px 0;
  border-top: 1px solid rgba(66, 86, 119, 0.2);
  border-bottom: 1px solid rgba(66, 86, 119, 0.2);
}

.partner-symbol {
  width: 88px;
  height: 88px;
  background: var(--ink);
  color: var(--mint);
  display: grid;
  place-items: center;
  font-weight: 700;
  font-size: 1.7rem;
  line-height: .75;
  letter-spacing: -0.1em;
  padding: 20px 12px;
}

.partner-symbol small {
  font-size: .9rem;
  letter-spacing: 0;
}

.partner > div:nth-child(2) p {
  margin: 14px 0 0;
  max-width: 660px;
  line-height: 1.7;
}

.partner-actions {
  display: grid;
  gap: 12px;
}

.partner-actions a {
  font-weight: 700;
  border-bottom: 1px solid #7286a4;
  padding-bottom: 5px;
  white-space: nowrap;
}

.integration-grid {
  margin-top: 42px;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.integration-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 42px;
  padding: 8px 14px;
  border: 1px solid rgba(66, 86, 119, 0.3);
  background: rgba(255, 255, 255, 0.5);
  color: var(--ink);
  font-weight: 700;
}

.integration-disclaimer {
  margin: 24px 0 0;
  font-size: .8rem;
}

.answers {
  background: var(--white);
}

.answers-grid {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 100px;
}

.answer-intro {
  max-width: 320px;
}

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

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 18px 0;
}

.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  font-weight: 700;
  font-size: 1.05rem;
}

.faq summary::-webkit-details-marker { display: none; }
.faq summary b { color: var(--blue); font-size: 1.3rem; }

.faq p {
  margin: 14px 0 0;
  color: var(--slate);
  line-height: 1.7;
  max-width: 760px;
}

footer {
  background: var(--ink);
  color: var(--white);
  padding: 88px 0 40px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 36px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-top h2 {
  max-width: 760px;
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 18px;
  padding-top: 26px;
  font-size: .9rem;
  color: #c8d7ee;
}

.footer-meta a {
  color: #eaf1ff;
}

.content-hero {
  padding: 92px 0 84px;
  background: #f1f3f5;
}

.breadcrumbs {
  margin: 0 0 34px;
  color: var(--slate);
  font-size: .9rem;
}

.breadcrumbs a,
.content-link {
  color: var(--blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.content-hero h1 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.8rem, 6vw, 5.4rem);
  letter-spacing: -.075em;
  line-height: .98;
}

.content-lede {
  max-width: 760px;
  margin: 24px 0 0;
  color: var(--slate);
  font-size: 1.15rem;
  line-height: 1.75;
}

.content-section {
  padding: 76px 0;
}

.content-section h2 {
  margin: 0 0 16px;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -.055em;
  line-height: 1.08;
}

.content-section > .shell > p {
  max-width: 800px;
  color: var(--slate);
  line-height: 1.75;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 30px;
}

.content-card {
  padding: 26px;
  background: var(--white);
  border: 1px solid var(--line);
}

.content-card h3 {
  margin: 0 0 10px;
  font-size: 1.15rem;
}

.content-card p {
  margin: 0;
  color: var(--slate);
  line-height: 1.7;
}

.content-callout {
  margin-top: 32px;
  padding: 24px;
  background: var(--soft);
  color: var(--ink);
}

.content-callout p {
  margin: 8px 0 0;
  color: var(--slate);
}

@media (max-width: 980px) {
  .main-nav {
    position: absolute;
    top: 78px;
    left: 28px;
    right: 28px;
    background: rgba(255, 255, 255, 0.97);
    border: 1px solid var(--line);
    box-shadow: 0 18px 38px rgba(7, 18, 37, 0.12);
    padding: 16px 20px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }

  .main-nav.open { display: flex; }
  .menu-button { display: inline-flex; margin-left: auto; }

  .hero-grid,
  .ai-layout,
  .answers-grid,
  .sdk-heading,
  .split-header,
  .footer-top {
    grid-template-columns: 1fr;
    display: grid;
  }

  .hero-grid { gap: 40px; }
  .feature-grid { grid-template-columns: 1fr; }
  .capability-list article {
    grid-template-columns: 1fr;
    gap: 10px;
  }
  .capability-list i { justify-self: start; }
  .sdk-points { grid-template-columns: 1fr; }
  .partner { grid-template-columns: 1fr; }
  .content-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .shell { width: min(92vw, 1220px); }
  .header-inner { gap: 10px; }
  .header-cta { display: none; }

  .hero-grid { min-height: auto; }
  .hero-copy { padding-top: 36px; }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  .metric-row { grid-template-columns: 1fr; }

  .signal-room { width: 100%; min-height: 460px; }
  .proof { grid-template-columns: 1fr 1fr; }
  .proof > p { grid-column: 1 / -1; }

  .sdk-workspace { box-shadow: 10px 10px 0 #c7d9ff; }
  .sdk-window-bar,
  .sdk-window-footer { display: block; }
  .sdk-window-bar b,
  .sdk-window-footer b { display: block; margin-top: 8px; }
  .sdk-suggestion { margin-left: 18px; }

  .footer-meta { display: grid; gap: 10px; }
  .content-hero { padding: 62px 0 56px; }
  .content-section { padding: 56px 0; }
}