:root {
  color-scheme: light;
  --ink: #162022;
  --muted: #5d6b6d;
  --line: #dce4df;
  --paper: #fbfcf8;
  --soft: #eef5ef;
  --mint: #69c8a0;
  --teal: #126f78;
  --coral: #e96f56;
  --gold: #d6a843;
  --shadow: 0 22px 70px rgba(22, 32, 34, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 18% 8%, rgba(105, 200, 160, 0.24), transparent 31rem),
    radial-gradient(circle at 90% 20%, rgba(233, 111, 86, 0.13), transparent 28rem),
    linear-gradient(180deg, #fbfcf8 0%, #f3f8f2 46%, #fbfcf8 100%);
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 18px 0;
  backdrop-filter: blur(18px);
}

.brand,
nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  color: white;
  background: linear-gradient(135deg, var(--teal), var(--mint));
  box-shadow: 0 10px 24px rgba(18, 111, 120, 0.24);
}

nav {
  gap: 6px;
  padding: 6px;
  border: 1px solid rgba(220, 228, 223, 0.8);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
}

nav a {
  padding: 9px 13px;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 700;
  transition: color 180ms ease, background 180ms ease;
}

nav a:hover {
  color: var(--ink);
  background: white;
}

.hero,
.section {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 75px);
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(320px, 0.78fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
  padding: 56px 0 84px;
}

.hero-copy {
  animation: rise 650ms ease both;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  overflow-wrap: break-word;
}

h1 {
  margin: 0;
  font-size: clamp(4.2rem, 13vw, 9rem);
  line-height: 0.88;
  letter-spacing: 0;
}

.tagline {
  max-width: 650px;
  margin: 28px 0 0;
  color: #344347;
  font-size: clamp(1.2rem, 2.2vw, 1.75rem);
  line-height: 1.45;
  font-weight: 600;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 8px;
  font-weight: 800;
  transition: transform 180ms ease, box-shadow 180ms ease;
}

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

.primary {
  color: white;
  background: var(--teal);
  box-shadow: 0 16px 30px rgba(18, 111, 120, 0.24);
}

.secondary {
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.7);
}

.assistant-visual {
  position: relative;
  min-height: 520px;
  border: 1px solid rgba(220, 228, 223, 0.9);
  border-radius: 26px;
  overflow: hidden;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.72), rgba(238, 245, 239, 0.88)),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160' viewBox='0 0 160 160'%3E%3Cpath d='M0 80h160M80 0v160' stroke='%23dce4df' stroke-width='1' opacity='.75'/%3E%3Ccircle cx='80' cy='80' r='3' fill='%2369c8a0' opacity='.7'/%3E%3C/svg%3E");
  box-shadow: var(--shadow);
  animation: rise 750ms 120ms ease both;
}

.visual-grid {
  position: absolute;
  inset: 42px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  opacity: 0.62;
}

.visual-grid span {
  border: 1px solid rgba(18, 111, 120, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.42);
}

.visual-core {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
}

.core-dot,
.pulse {
  position: absolute;
  border-radius: 50%;
}

.core-dot {
  width: 126px;
  height: 126px;
  background:
    radial-gradient(circle at 35% 28%, white 0 9%, transparent 10%),
    linear-gradient(135deg, var(--teal), var(--mint) 56%, var(--gold));
  box-shadow: 0 24px 70px rgba(18, 111, 120, 0.34);
}

.pulse {
  border: 1px solid rgba(18, 111, 120, 0.22);
  animation: breathe 4.2s ease-in-out infinite;
}

.pulse.one {
  width: 230px;
  height: 230px;
}

.pulse.two {
  width: 330px;
  height: 330px;
  animation-delay: 900ms;
}

.signal-card {
  position: absolute;
  min-width: 118px;
  padding: 13px 16px;
  border: 1px solid rgba(220, 228, 223, 0.92);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 42px rgba(22, 32, 34, 0.12);
  font-weight: 800;
}

.top-card {
  top: 82px;
  right: 32px;
}

.bottom-card {
  bottom: 82px;
  left: 34px;
}

.section {
  padding: 86px 0;
}

.overview {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 44px;
  border-top: 1px solid var(--line);
}

.section-heading h2 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.6rem);
  line-height: 1.02;
  letter-spacing: 0;
}

.section-copy,
.limits-panel p {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-top: 34px;
}

.feature-card {
  min-height: 260px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 14px 38px rgba(22, 32, 34, 0.08);
  transition: transform 180ms ease, border-color 180ms ease, box-shadow 180ms ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(18, 111, 120, 0.28);
  box-shadow: 0 18px 52px rgba(22, 32, 34, 0.12);
}

.icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 28px;
  border-radius: 8px;
  color: var(--teal);
  background: var(--soft);
  font-weight: 900;
}

h3 {
  margin: 0 0 12px;
  font-size: 1.08rem;
}

.feature-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.65;
}

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

.limits-panel {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 34px;
  padding: 32px;
  border-left: 6px solid var(--coral);
  border-radius: 8px;
  background: white;
  box-shadow: 0 18px 50px rgba(22, 32, 34, 0.08);
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding: 36px 0 46px;
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 800;
}

.site-footer a {
  color: var(--teal);
  font-weight: 800;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes breathe {
  0%,
  100% {
    transform: scale(0.94);
    opacity: 0.38;
  }
  50% {
    transform: scale(1.04);
    opacity: 0.9;
  }
}

@media (max-width: 980px) {
  .hero,
  .overview,
  .limits-panel {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 42px;
  }

  .assistant-visual {
    min-height: 420px;
  }

  .card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    align-items: stretch;
    flex-direction: column;
  }

  nav {
    justify-content: space-between;
    width: 100%;
    border-radius: 8px;
  }

  nav a {
    flex: 1;
    text-align: center;
  }

  .hero {
    padding-bottom: 56px;
  }

  .hero-actions,
  .button,
  .site-footer {
    width: 100%;
  }

  .assistant-visual {
    min-height: 350px;
    border-radius: 18px;
  }

  .visual-grid {
    inset: 24px;
    gap: 9px;
  }

  .pulse.one {
    width: 180px;
    height: 180px;
  }

  .pulse.two {
    width: 252px;
    height: 252px;
  }

  .core-dot {
    width: 96px;
    height: 96px;
  }

  .signal-card {
    min-width: 96px;
    padding: 10px 12px;
  }

  .top-card {
    top: 44px;
    right: 18px;
  }

  .bottom-card {
    bottom: 42px;
    left: 18px;
  }

  .section {
    padding: 62px 0;
  }

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

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

  .limits-panel {
    padding: 24px;
  }

  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }
}