:root {
  --ink: #2f2f2f;
  --muted: #6f7780;
  --paper: #f4f6f8;
  --panel: #ffffff;
  --line: #dde4eb;
  --blue: #5fa8ff;
  --blue-light: #8ec5ff;
  --blue-dark: #2f86f6;
  --blue-soft: #eaf4ff;
  --steel: #8f98a2;
  --shadow: 0 22px 70px rgba(47, 47, 47, 0.14);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

img {
  display: block;
  max-width: 100%;
}

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

button,
input,
textarea {
  font: inherit;
}

.site-header {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 54px);
  color: #ffffff;
  transition: background 180ms ease, box-shadow 180ms ease, color 180ms ease;
}

.site-header.is-scrolled,
.site-header.is-open {
  color: var(--ink);
  background: rgba(244, 246, 248, 0.94);
  box-shadow: 0 8px 34px rgba(47, 47, 47, 0.1);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-mark {
  width: 54px;
  max-height: 54px;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 24px rgba(47, 47, 47, 0.14));
}

.brand-text {
  display: grid;
  gap: 0;
  line-height: 1;
}

.brand-name {
  color: currentColor;
  font-size: clamp(1.46rem, 2vw, 1.86rem);
  font-weight: 950;
  letter-spacing: 0;
}

.brand-subname {
  color: var(--blue-dark);
  font-size: clamp(0.62rem, 0.9vw, 0.78rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  font-size: 0.95rem;
  font-weight: 700;
}

.site-nav a {
  opacity: 0.9;
}

.site-nav a:hover {
  opacity: 1;
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  padding: 0;
  border: 1px solid currentColor;
  border-radius: 8px;
  color: inherit;
  background: transparent;
}

.menu-button span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 4px auto;
  background: currentColor;
}

.hero {
  position: relative;
  min-height: 92vh;
  display: grid;
  align-items: center;
  overflow: hidden;
  color: #ffffff;
}

.hero-image,
.hero-overlay {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-image {
  object-fit: cover;
}

.hero-overlay {
  background:
    linear-gradient(90deg, rgba(47, 47, 47, 0.88) 0%, rgba(47, 47, 47, 0.72) 38%, rgba(95, 168, 255, 0.26) 72%, rgba(255, 255, 255, 0.08) 100%),
    linear-gradient(0deg, rgba(47, 47, 47, 0.2), rgba(47, 47, 47, 0));
}

.hero-content {
  position: relative;
  z-index: 2;
  width: min(760px, calc(100% - 36px));
  margin-left: clamp(18px, 7vw, 94px);
  padding-top: 148px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue-dark);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero .eyebrow {
  color: #8ec5ff;
}

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

h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(2.8rem, 7vw, 6.2rem);
  line-height: 0.96;
  letter-spacing: 0;
}

h2 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 4.3rem);
  line-height: 1.04;
  letter-spacing: 0;
}

h3 {
  margin: 0;
  font-size: 1.15rem;
  line-height: 1.25;
}

.hero-copy {
  max-width: 600px;
  margin: 24px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: clamp(1.04rem, 2vw, 1.28rem);
}

.hero-actions,
.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  border: 1px solid transparent;
  padding: 12px 18px;
  font-weight: 850;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}

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

.button.primary {
  background: var(--blue-dark);
  color: #ffffff;
}

.button.primary:hover {
  background: var(--ink);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.55);
  color: #ffffff;
  background: rgba(255, 255, 255, 0.08);
}

.hero-proof span {
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  padding: 8px 12px;
  color: rgba(255, 255, 255, 0.85);
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.9rem;
  font-weight: 750;
}

.section {
  padding: clamp(72px, 9vw, 124px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 860px;
  margin-bottom: 34px;
}

.intro {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, 0.9fr);
  gap: clamp(32px, 7vw, 86px);
  align-items: start;
}

.intro-grid {
  display: grid;
  gap: 18px;
  color: var(--muted);
  font-size: 1.1rem;
}

.field-note {
  color: var(--blue-dark);
  font-weight: 900;
}

.intro-grid p {
  margin: 0;
}

.problems {
  background: #ffffff;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.problem-card {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.problem-card span {
  display: inline-flex;
  margin-bottom: 28px;
  color: var(--blue-dark);
  font-weight: 950;
}

.problem-card p {
  margin-bottom: 0;
  color: var(--muted);
}

.services {
  background: #ffffff;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.service-card {
  display: flex;
  flex-direction: column;
  min-height: 270px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.service-card a {
  width: fit-content;
  margin-top: auto;
  color: var(--blue-dark);
  font-weight: 900;
}

.service-card a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.card-icon {
  display: inline-flex;
  margin-bottom: 34px;
  color: var(--blue-dark);
  font-weight: 950;
}

.service-card p,
.timeline-item p,
.system-preview p,
.contact-copy p,
.trust-list,
.form-note {
  color: var(--muted);
}

.process {
  background: #edf4fb;
}

.demos {
  overflow: hidden;
  background: #ffffff;
}

.demo-frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: linear-gradient(135deg, #ffffff, #eaf4ff);
  box-shadow: var(--shadow);
}

.demo-track {
  display: flex;
  width: max-content;
  gap: 18px;
  padding: 24px;
  animation: demo-roll 34s linear infinite;
}

.demo-frame:hover .demo-track {
  animation-play-state: paused;
}

.demo-card {
  width: clamp(250px, 28vw, 360px);
  min-height: 250px;
  flex: 0 0 auto;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
}

.demo-topbar {
  display: flex;
  gap: 6px;
  margin-bottom: 22px;
}

.demo-topbar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #8ec5ff;
}

.demo-card h3 {
  margin-bottom: 18px;
}

.demo-list,
.demo-checks,
.demo-stats {
  display: grid;
  gap: 10px;
}

.demo-list p,
.demo-checks span,
.demo-stats span {
  margin: 0;
  padding: 12px;
  border-radius: 8px;
  background: var(--paper);
}

.demo-list strong,
.demo-list small {
  display: block;
}

.demo-list small,
.demo-checks span,
.demo-stats span {
  color: var(--muted);
  font-weight: 750;
}

.demo-checks span::before {
  color: var(--blue-dark);
  content: "✓ ";
  font-weight: 950;
}

.demo-meter {
  height: 14px;
  overflow: hidden;
  margin-bottom: 18px;
  border-radius: 999px;
  background: var(--paper);
}

.demo-meter span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--blue-dark);
}

.demo-stats {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.demo-stats strong {
  display: block;
  color: var(--ink);
  font-size: 1.8rem;
  line-height: 1;
}

@keyframes demo-roll {
  from {
    transform: translateX(0);
  }

  to {
    transform: translateX(calc(-50% - 9px));
  }
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--line);
}

.timeline-item {
  min-height: 260px;
  padding: 26px;
  background: var(--paper);
}

.timeline-item > span {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 52px;
  place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: #ffffff;
  font-weight: 900;
}

.systems-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.88fr) minmax(320px, 1.12fr);
  gap: 24px;
  align-items: stretch;
}

.system-list {
  display: grid;
  gap: 10px;
}

.system-row {
  width: 100%;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: #ffffff;
  text-align: left;
  cursor: pointer;
}

.system-row span,
.system-row small {
  display: block;
}

.system-row span {
  font-weight: 900;
}

.system-row small {
  margin-top: 4px;
  color: var(--muted);
}

.system-row.is-active {
  border-color: var(--blue-dark);
  background: var(--blue-soft);
}

.system-preview {
  min-height: 392px;
  padding: clamp(26px, 5vw, 52px);
  border-radius: 8px;
  color: #ffffff;
  background:
    linear-gradient(135deg, rgba(95, 168, 255, 0.96), rgba(47, 47, 47, 0.96)),
    var(--blue-dark);
  box-shadow: var(--shadow);
}

.preview-label {
  margin-top: 0;
  color: rgba(255, 255, 255, 0.72) !important;
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

.system-preview h3 {
  font-size: clamp(1.8rem, 3vw, 3rem);
}

.system-preview p,
.system-preview li {
  color: rgba(255, 255, 255, 0.84);
  font-size: 1.04rem;
}

.system-preview ul {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding-left: 20px;
}

.contact {
  display: grid;
  grid-template-columns: minmax(280px, 0.9fr) minmax(320px, 1.1fr);
  gap: clamp(32px, 7vw, 82px);
  background: #ffffff;
}

.contact-form {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 4vw, 34px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.trust-list {
  display: grid;
  gap: 10px;
  margin-top: 24px;
  font-weight: 800;
}

.trust-list span {
  position: relative;
  padding-left: 22px;
}

.trust-list span::before {
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue-dark);
  content: "";
}

.contact-form label {
  display: grid;
  gap: 7px;
  font-weight: 850;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid #cbd9e4;
  border-radius: 8px;
  padding: 12px 13px;
  color: var(--ink);
  background: #ffffff;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 3px solid rgba(95, 168, 255, 0.28);
  border-color: var(--blue-dark);
}

.contact-form .button {
  width: fit-content;
  border: 0;
  cursor: pointer;
}

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: 26px clamp(18px, 5vw, 72px);
  color: #ffffff;
  background: var(--ink);
  font-weight: 800;
}

.site-footer p {
  max-width: 520px;
  margin: 7px 0 0;
  color: rgba(255, 255, 255, 0.68);
  font-weight: 650;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px 18px;
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.94rem;
}

.site-footer a {
  color: rgba(255, 255, 255, 0.76);
}

@media (max-width: 980px) {
  .problem-grid,
  .service-grid,
  .timeline {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .intro,
  .systems-layout,
  .contact {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 1120px) {
  .site-header {
    padding: 14px 18px;
  }

  .brand {
    gap: 8px;
  }

  .brand-mark {
    width: 46px;
    max-height: 46px;
  }

  .brand-name {
    font-size: 1.12rem;
    letter-spacing: 0;
  }

  .brand-subname {
    font-size: 0.58rem;
    letter-spacing: 0.06em;
  }

  .menu-button {
    display: block;
  }

  .site-nav {
    position: absolute;
    top: 78px;
    left: 18px;
    right: 18px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: 8px;
    color: var(--ink);
    background: var(--paper);
    box-shadow: var(--shadow);
  }

  .site-nav.is-open {
    display: flex;
  }

  .site-nav a {
    padding: 15px 16px;
    border-bottom: 1px solid var(--line);
  }

  .site-nav a:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 720px) {
  .hero {
    min-height: 88vh;
  }

  .brand-subname {
    display: none;
  }

  .hero-overlay {
    background: linear-gradient(90deg, rgba(47, 47, 47, 0.9), rgba(95, 168, 255, 0.58));
  }

  .hero-content {
    width: calc(100% - 36px);
    margin: 0 auto;
    padding-top: 156px;
  }

  h1 {
    font-size: clamp(2.55rem, 14vw, 4.8rem);
  }

  .button {
    width: 100%;
  }

  .problem-grid,
  .service-grid,
  .timeline {
    grid-template-columns: 1fr;
  }

  .service-card,
  .timeline-item {
    min-height: auto;
  }

  .timeline-item > span {
    margin-bottom: 28px;
  }

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

  .footer-links {
    justify-content: flex-start;
  }
}