:root {
  --bg: #f4f8ff;
  --surface: #ffffff;
  --surface-soft: #f8fbff;
  --text: #0f172a;
  --muted: #4a5b76;
  --line: #dbe4f2;
  --line-strong: #c6d4e9;
  --brand: #2563eb;
  --brand-dark: #1d4ed8;
  --accent: #1e40af;
  --focus: #2563eb;
  --radius: 12px;
  --radius-sm: 9px;
  --container: 1140px;
  --shadow-soft: 0 8px 26px rgba(37, 99, 235, 0.08);
  --shadow-card: 0 16px 34px rgba(15, 23, 42, 0.1);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background:
    radial-gradient(54rem 54rem at 8% 10%, rgba(37, 99, 235, 0.14) 0%, rgba(37, 99, 235, 0) 64%),
    radial-gradient(48rem 48rem at 90% 14%, rgba(37, 99, 235, 0.08) 0%, rgba(37, 99, 235, 0) 66%),
    radial-gradient(58rem 58rem at 50% 92%, rgba(59, 130, 246, 0.08) 0%, rgba(59, 130, 246, 0) 68%),
    var(--bg);
  line-height: 1.65;
  font-size: 16px;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--brand);
}

p {
  margin: 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.icon {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.icon-lg {
  width: 28px;
  height: 28px;
}

.icon-muted {
  opacity: 0.9;
}

.icon svg,
svg.icon {
  width: 100%;
  height: 100%;
  display: block;
  fill: none;
  stroke: currentColor;
}

.feature-row {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: border-color 0.22s ease, box-shadow 0.22s ease, background-color 0.22s ease;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--brand);
  color: #fff;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  z-index: 1000;
}

.skip-link:focus {
  left: 0.85rem;
  top: 0.85rem;
}

.container {
  width: min(var(--container), 92%);
  margin-inline: auto;
}

.site-header {
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 50;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 78px;
}

.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.12em;
  font-size: 0.98rem;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  border-radius: var(--radius-sm);
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
  width: 18px;
  height: 2px;
  background: var(--text);
  border-radius: 5px;
  display: block;
  transition: transform 0.2s ease, opacity 0.2s ease;
  content: "";
}

.nav-toggle-icon {
  position: relative;
}

.nav-toggle-icon::before {
  position: absolute;
  top: -6px;
}

.nav-toggle-icon::after {
  position: absolute;
  top: 6px;
}

.site-nav {
  margin-left: auto;
}

.nav-list {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
}

.nav-list a {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  font-weight: 520;
  padding: 0.52rem 0.75rem;
  border-radius: var(--radius-sm);
}

.nav-list a[aria-current="page"] {
  background: rgba(37, 99, 235, 0.14);
  color: #1d4ed8;
  font-weight: 650;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  background: rgba(37, 99, 235, 0.1);
}

.hero {
  padding: 5.8rem 0 3.2rem;
}

.hero .container {
  position: relative;
  isolation: isolate;
}

.subpage-hero {
  padding-bottom: 2.35rem;
}

.pilot-note {
  margin: 0 0 1rem;
  color: var(--accent);
  font-size: 0.95rem;
  font-weight: 600;
}

h1,
h2 {
  line-height: 1.2;
  margin: 0 0 1rem;
  letter-spacing: -0.015em;
}

h1 {
  max-width: 17ch;
  font-size: clamp(2.35rem, 4.2vw, 3.55rem);
  font-weight: 810;
  position: relative;
  z-index: 1;
}

.hero h1::before {
  content: "";
  position: absolute;
  left: -1.2rem;
  top: -1rem;
  width: min(32rem, 115%);
  height: min(15rem, 180%);
  background: radial-gradient(ellipse at 34% 48%, rgba(37, 99, 235, 0.2) 0%, rgba(37, 99, 235, 0.08) 38%, rgba(37, 99, 235, 0) 74%);
  z-index: -1;
  pointer-events: none;
}

h2 {
  font-size: clamp(1.35rem, 2.3vw, 1.95rem);
  font-weight: 740;
}

.heading-with-icon {
  display: flex;
  align-items: center;
  gap: 12px;
}

.heading-with-icon .icon {
  color: var(--accent);
}

.lead {
  max-width: 72ch;
  color: var(--muted);
  margin: 0 0 1.9rem;
  font-size: clamp(1.03rem, 1.6vw, 1.18rem);
}

.hero-trust {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.42rem;
  align-items: center;
}

.section {
  padding: 1.15rem 0;
}

.metrics-strip {
  padding-top: 0;
}

.metrics-strip .container {
  padding-top: 0.95rem;
  padding-bottom: 0.95rem;
}

.metrics-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.65rem;
}

.metrics-list li {
  margin: 0;
}

.metrics-list .feature-row {
  height: 100%;
  align-items: center;
  padding: 0.58rem 0.62rem;
}

.section .container {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.25rem, 2.4vw, 2rem);
  transition: border-color 0.24s ease, box-shadow 0.24s ease;
}

.section .container:hover,
.section .container:focus-within {
  border-color: rgba(37, 99, 235, 0.36);
  box-shadow: var(--shadow-soft), 0 0 0 1px rgba(37, 99, 235, 0.12);
}

.section:nth-of-type(even) .container {
  background: var(--surface-soft);
}

.final-cta .container {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.08) 0%, rgba(255, 255, 255, 0.98) 58%, rgba(248, 251, 255, 1) 100%);
  border-color: rgba(37, 99, 235, 0.3);
  box-shadow: var(--shadow-card);
}

ul,
ol {
  margin: 0.95rem 0 0;
  padding-left: 1.2rem;
}

li {
  margin: 0 0 0.5rem;
}

.feature-list {
  list-style: none;
  padding-left: 0;
}

.feature-list li {
  margin: 0 0 0.7rem;
}

.feature-list .icon {
  color: var(--accent);
  margin-top: 0.14rem;
}

.feature-list li:focus-within > .feature-row,
.contact-note li:focus-within > .feature-row,
ol li:focus-within > .feature-row {
  border-color: rgba(37, 99, 235, 0.28);
  background: rgba(37, 99, 235, 0.04);
  box-shadow: 0 8px 18px rgba(37, 99, 235, 0.08);
}

.session-flow {
  list-style: none;
  padding-left: 0;
  margin: 1rem 0 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.65rem;
}

.flow-step {
  margin: 0;
  position: relative;
}

.flow-step .feature-row {
  height: 100%;
  align-items: center;
  background: rgba(37, 99, 235, 0.03);
  border: 1px solid rgba(37, 99, 235, 0.12);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.7rem;
  animation: flowStepPulse 3.2s ease-in-out infinite;
}

.flow-step::after {
  content: "→";
  position: absolute;
  right: -0.5rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  opacity: 0.5;
}

.flow-step:last-child::after {
  display: none;
}

.flow-step:nth-child(1) .feature-row {
  animation-delay: 0s;
}

.flow-step:nth-child(2) .feature-row {
  animation-delay: 0.8s;
}

.flow-step:nth-child(3) .feature-row {
  animation-delay: 1.6s;
}

.flow-step:nth-child(4) .feature-row {
  animation-delay: 2.4s;
}

@keyframes flowStepPulse {
  0%,
  18%,
  100% {
    background: rgba(37, 99, 235, 0.03);
    border-color: rgba(37, 99, 235, 0.12);
    box-shadow: none;
  }

  26%,
  36% {
    background: rgba(37, 99, 235, 0.08);
    border-color: rgba(37, 99, 235, 0.25);
    box-shadow: 0 8px 16px rgba(37, 99, 235, 0.1);
  }
}

.signal-example {
  margin-top: 0.95rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.7);
  padding: 0.9rem;
}

.signal-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
}

.signal-list {
  list-style: none;
  padding-left: 0;
  margin: 0.7rem 0 0;
}

.signal-list li {
  margin: 0 0 0.4rem;
  display: flex;
  justify-content: space-between;
  gap: 0.7rem;
  color: var(--muted);
}

.signal-list li strong {
  color: var(--text);
  font-weight: 650;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.78rem 1.08rem;
  font-weight: 640;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: transform 0.22s ease, box-shadow 0.28s ease, background-color 0.28s ease;
}

.btn-primary {
  background: linear-gradient(180deg, #3d7bff 0%, var(--brand) 100%);
  color: #fff;
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: linear-gradient(180deg, #336ff1 0%, var(--brand-dark) 100%);
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.28), 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.desktop-cta {
  margin-left: 0.25rem;
}

.nav-cta {
  display: none;
}

.contact-wrap {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 1.2rem;
}

.contact-form {
  display: grid;
  gap: 0.72rem;
}

.form-help {
  color: var(--muted);
  font-size: 0.95rem;
  margin: 0 0 0.9rem;
}

.form-errors {
  margin: 0 0 0.95rem;
  border: 1px solid #e5a8b4;
  background: #fff6f8;
  color: #8f1d36;
  border-radius: var(--radius-sm);
  padding: 0.75rem 0.9rem;
}

.form-errors p {
  margin: 0;
  font-weight: 600;
}

.form-errors ul {
  margin-top: 0.5rem;
}

.form-errors a {
  color: #8f1d36;
}

.form-error {
  color: #b42340;
  margin: -0.25rem 0 0.2rem;
  font-size: 0.9rem;
}

.is-invalid {
  border-color: #d96f83;
  background: #fff6f8;
}

label {
  font-weight: 620;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.78rem;
  font: inherit;
  color: var(--text);
  background: #ffffff;
}

input::placeholder,
textarea::placeholder {
  color: #7e8da7;
}

input:focus-visible,
textarea:focus-visible,
.btn:focus-visible,
a:focus-visible,
.nav-toggle:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 2px;
}

.contact-note {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.1rem;
  background: var(--surface-soft);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.8);
  margin-top: 3rem;
}

.footer-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.footer-inner p {
  margin: 0;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .section .container,
  .feature-row,
  .btn,
  .nav-toggle-icon,
  .nav-toggle-icon::before,
  .nav-toggle-icon::after {
    transition: none;
  }

  .btn-primary:hover,
  .btn-primary:focus-visible {
    transform: none;
  }

  .flow-step .feature-row {
    animation: none;
  }
}

@media (max-width: 900px) {
  .header-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    min-height: 74px;
    padding: 0.65rem 0;
    position: relative;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    grid-column: 1 / -1;
    margin: 0.5rem 0 0;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow-soft);
    padding: 0.5rem;
    display: none;
  }

  .site-header[data-menu-open="true"] .site-nav {
    display: block;
  }

  .site-header[data-menu-open="true"] .nav-toggle-icon {
    background: transparent;
  }

  .site-header[data-menu-open="true"] .nav-toggle-icon::before {
    transform: translateY(6px) rotate(45deg);
  }

  .site-header[data-menu-open="true"] .nav-toggle-icon::after {
    transform: translateY(-6px) rotate(-45deg);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.22rem;
  }

  .nav-list a {
    width: 100%;
    padding: 0.7rem 0.78rem;
  }

  .desktop-cta {
    display: none;
  }

  .nav-cta {
    display: inline-flex;
    margin-top: 0.45rem;
    width: 100%;
  }

  .hero {
    padding-top: 4.2rem;
  }

  .contact-wrap {
    grid-template-columns: 1fr;
  }

  .metrics-list {
    grid-template-columns: 1fr;
  }

  .session-flow {
    grid-template-columns: 1fr;
  }

  .flow-step::after {
    content: "↓";
    right: auto;
    left: 50%;
    top: auto;
    bottom: -0.58rem;
    transform: translateX(-50%);
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 3.25rem;
  }

  .section .container {
    padding: 1.15rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 0.8rem 0;
  }
}