:root {
  --bg: #09111f;
  --bg-soft: #0f1b30;
  --panel: rgba(15, 27, 48, 0.82);
  --panel-strong: rgba(13, 22, 38, 0.96);
  --line: rgba(149, 188, 255, 0.18);
  --line-strong: rgba(149, 188, 255, 0.36);
  --text: #ecf3ff;
  --muted: #a7bbd7;
  --accent: #67c4ff;
  --accent-2: #7ff2cf;
  --focus: #ffd166;
  --danger: #ff7f7f;
  --radius: 22px;
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.28);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(103, 196, 255, 0.18), transparent 30%),
    radial-gradient(circle at 80% 0%, rgba(127, 242, 207, 0.12), transparent 25%),
    linear-gradient(180deg, #08101d 0%, #0d1526 100%);
  min-width: 320px;
}

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

a:focus-visible,
button:focus-visible,
select:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

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

.shell {
  width: min(calc(100% - 32px), var(--max));
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: 12px;
  top: 12px;
  transform: translateY(-200%);
  padding: 10px 14px;
  border-radius: 999px;
  background: var(--focus);
  color: #08101d;
  z-index: 100;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(8, 16, 29, 0.78);
  border-bottom: 1px solid var(--line);
}

.header-shell {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 18px;
  align-items: center;
  padding: 16px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
}

.brand span {
  display: grid;
  gap: 4px;
}

.brand strong {
  font-size: 1rem;
}

.brand em,
.eyebrow,
.lead,
.footer-title,
.lang-switch {
  color: var(--muted);
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

.site-nav a,
.lang-switch a {
  padding: 8px 10px;
  border-radius: 999px;
}

.site-nav a:hover,
.lang-switch a:hover,
.lang-switch a[aria-current="page"] {
  background: rgba(103, 196, 255, 0.12);
  color: var(--text);
}

.hero,
.section-grid,
.process-layout,
.split-section,
.planner-section,
.faq-section,
.contact-panel,
.inner-page {
  padding: 36px 0 44px;
}

.hero {
  min-height: 72vh;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 32px;
  align-items: center;
}

.hero-copy h1,
.page-hero h1,
.error-page h1 {
  font-size: clamp(2.6rem, 5vw, 4.9rem);
  line-height: 0.98;
  margin: 0 0 18px;
  letter-spacing: -0.05em;
}

.lead {
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 62ch;
}

.hero-visual,
.diagram-card,
.planner-output,
.info-card,
.service-card,
.contact-panel,
.demo-form,
.noscript-note {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-visual,
.diagram-card {
  padding: 18px;
  overflow: hidden;
}

.section-heading {
  margin-bottom: 22px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  letter-spacing: -0.04em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}

.info-card,
.service-card {
  padding: 24px;
}

.chip-grid,
.bullet-panel,
.planner-output ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  list-style: none;
  margin: 18px 0 0;
}

.chip-grid li,
.bullet-panel li,
.planner-output li {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
}

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

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 14px;
}

.timeline li {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  align-items: center;
  padding: 18px 20px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.timeline span {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  color: #08101d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  font-weight: 700;
}

.split-section,
.planner-grid,
.contact-page-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.planner-form {
  display: grid;
  gap: 14px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
}

.planner-form label,
.demo-form label {
  display: grid;
  gap: 8px;
}

.planner-form select,
.demo-form input,
.demo-form textarea {
  width: 100%;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  padding: 13px 14px;
  font: inherit;
}

.planner-output {
  padding: 24px;
  position: sticky;
  top: 96px;
}

.faq-list {
  display: grid;
  gap: 14px;
}

.faq-list details {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  padding: 16px 18px;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 600;
}

.contact-panel,
.error-page {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
}

.button.primary {
  color: #08101d;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
}

.button.secondary {
  border-color: var(--line-strong);
  background: transparent;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 18px 0 40px;
  border-top: 1px solid var(--line);
}

@media (max-width: 920px) {
  .header-shell,
  .hero,
  .split-section,
  .planner-grid,
  .contact-page-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    justify-content: flex-start;
  }

  .planner-output {
    position: static;
  }
}

@media (max-width: 720px) {
  .card-grid,
  .services-grid {
    grid-template-columns: 1fr;
  }

  .contact-panel,
  .error-page {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-copy h1,
  .page-hero h1,
  .error-page h1 {
    font-size: clamp(2.1rem, 12vw, 3.3rem);
  }
}