:root {
  --page: #050608;
  --surface: #0c1018;
  --surface-alt: #121824;
  --text: #e8edf4;
  --muted: #7a8799;
  --accent: #4c97ff;
  --accent-alt: #8dd8ff;
  --accent-hot: #69beff;
  --line: color-mix(in srgb, var(--text) 16%, transparent);
  --line-strong: color-mix(in srgb, var(--accent) 42%, transparent);
  --radius: 4px;
  --rail-width: clamp(220px, 16vw, 280px);
  --content-max: min(1480px, calc(100vw - var(--rail-width) - 4rem));
  --section-space: clamp(4rem, 6vw, 6.5rem);
  --font-display: "Segoe UI", system-ui, -apple-system, Roboto, Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "Segoe UI Mono", "SFMono-Regular", Menlo, Consolas, monospace;
}

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  line-height: 1.62;
  font-family: var(--font-display);
  background: var(--page);
  color: var(--text);
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 7%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 7%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
}

body, button, input, select, textarea { font: inherit; }

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

img, svg, video, canvas, iframe {
  display: block;
  max-width: 100%;
  height: auto;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  font-size: clamp(2.4rem, 5.8vw, 5.4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
  margin-bottom: 1.35rem;
  font-weight: 800;
}

h2 {
  font-size: clamp(1.85rem, 3.4vw, 3.2rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
  margin-bottom: 0.85rem;
  font-weight: 800;
}

h3 {
  font-size: clamp(1.08rem, 1.6vw, 1.35rem);
  line-height: 1.22;
  font-weight: 700;
}

p { color: var(--muted); }

.visually-hidden-defs {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
}

.page-shell {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  min-height: 100vh;
  max-width: 2160px;
  margin: 0 auto;
}

.site-rail {
  position: sticky;
  top: 0;
  align-self: start;
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 1.5rem;
  padding: 1.35rem 1.1rem 1.75rem;
  border-right: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(12px);
  z-index: 40;
}

.rail-brand-row {
  display: flex;
  align-items: center;
  min-width: 0;
}

.rail-brand-row .brand {
  display: grid;
  grid-template-columns: minmax(0, 64px) minmax(0, 1fr);
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 0.95rem;
  min-width: 0;
}

.rail-brand-row .brand-logo {
  width: 64px;
  height: 64px;
  max-width: 64px;
  max-height: 64px;
  flex: 0 0 64px;
  border-radius: 12px;
  overflow: hidden;
}

.rail-brand-row .brand-logo svg {
  width: 100%;
  height: 100%;
}

.rail-brand-row .brand small {
  display: block;
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--muted);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  align-self: center;
  width: 100%;
  min-width: 0;
}

.rail-nav a {
  display: block;
  padding: 0.62rem 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  border-left: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.rail-nav a:hover {
  color: var(--text);
  border-left-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
}

.rail-cta, .header-cta, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.82rem 1.15rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-weight: 800;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.rail-cta {
  width: 100%;
  white-space: normal;
  text-align: center;
}

.button-primary, .header-cta, .rail-cta {
  background: linear-gradient(135deg, var(--accent-alt), var(--accent));
  color: #041018;
  border-color: var(--accent);
}

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

.button-primary:hover, .button-secondary:hover, .rail-cta:hover {
  transform: translateY(-1px);
}

.page-canvas {
  min-width: 0;
  display: flex;
  justify-content: center;
}

.page-main {
  width: min(var(--content-max), 100%);
  padding: 0 clamp(1rem, 2.4vw, 2.5rem);
}

.section-inner {
  width: 100%;
  margin: 0 auto;
}

.hero {
  padding: clamp(2.5rem, 5vw, 4.5rem) 0 var(--section-space);
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.92fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: center;
}

.hero-copy {
  min-width: 0;
  border-left: 3px solid var(--accent);
  padding-left: clamp(1rem, 2vw, 1.75rem);
}

.eyebrow, .section-kicker {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--accent-alt);
  margin-bottom: 0.85rem;
}

.lead {
  font-size: clamp(1.02rem, 1.55vw, 1.28rem);
  max-width: 52ch;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin: 1.75rem 0 1rem;
}

.geo-line {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-visual {
  overflow: hidden;
  width: 100%;
  min-height: clamp(240px, 34vw, 420px);
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) + 2px);
  background:
    radial-gradient(circle at 72% 18%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 42%),
    linear-gradient(145deg, var(--surface-alt), var(--surface));
  box-shadow: 0 24px 64px color-mix(in srgb, var(--accent) 12%, transparent);
}

.section {
  padding: var(--section-space) 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  max-width: 760px;
  margin-bottom: 2rem;
}

.section-heading > p {
  font-size: 1.02rem;
}

.section:nth-of-type(even) {
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  margin-inline: calc(-1 * clamp(1rem, 2.4vw, 2.5rem));
  padding-inline: clamp(1rem, 2.4vw, 2.5rem);
}

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

.card {
  min-width: 0;
  padding: 1.35rem;
  border-radius: var(--radius);
  background: var(--surface);
  border: 1px solid var(--line);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
}

.card:hover {
  transform: translateY(-3px);
  border-color: var(--line-strong);
  box-shadow: 0 16px 40px color-mix(in srgb, var(--accent) 10%, transparent);
}

.card p { margin-bottom: 0; }

.card-icon, .step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 0.85rem;
  color: var(--accent-alt);
  border: 1px solid color-mix(in srgb, var(--accent) 34%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: 10px;
}

.card-icon svg, .step-icon svg {
  width: 28px;
  height: 28px;
}

.card-label {
  display: block;
  color: var(--accent-alt);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.55rem;
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.45rem;
}

.process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.85rem;
}

.process-list li {
  min-width: 0;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0.85rem;
  padding: 1.15rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.step-icon { margin-bottom: 0; }

.geo-chips {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.85rem;
}

.geo-chip {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.geo-chip strong,
.geo-chip span { display: block; }

.geo-chip span {
  color: var(--muted);
  font-size: 0.88rem;
  margin-top: 0.45rem;
}

.guide-body {
  display: grid;
  gap: 1rem;
}

.chapter {
  padding: 1.15rem 1.2rem;
  border-left: 2px solid var(--accent);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
}

.chapter li {
  color: var(--muted);
  margin: 0.45rem 0;
}

.faq-list {
  max-width: 920px;
  display: grid;
  gap: 0;
}

.faq-list details {
  border-bottom: 1px solid var(--line);
  padding: 0.95rem 0;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
  list-style: none;
}

.faq-list summary::-webkit-details-marker { display: none; }

.faq-list p {
  padding-right: 1.5rem;
  margin-bottom: 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1.05fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.contact-form {
  display: grid;
  gap: 0.9rem;
  background: var(--surface);
  padding: 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--page);
  color: var(--text);
  padding: 0.82rem;
  border-radius: calc(var(--radius) * 0.75);
}

textarea {
  min-height: 110px;
  resize: vertical;
}

.form-message {
  color: var(--accent-alt);
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.site-footer {
  padding: 3.5rem 0 4rem;
  background: color-mix(in srgb, var(--surface) 90%, var(--page));
  border-top: 1px solid var(--line);
  margin-inline: calc(-1 * clamp(1rem, 2.4vw, 2.5rem));
  padding-inline: clamp(1rem, 2.4vw, 2.5rem);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.9fr 0.75fr;
  gap: 1.75rem;
}

.footer-brand { font-size: 1.35rem; }

.site-footer a {
  display: block;
  color: var(--muted);
  margin: 0.35rem 0;
}

.site-footer a:hover { color: var(--accent-alt); }

@media (max-width: 1180px) {
  .page-shell {
    grid-template-columns: 1fr;
    max-width: 100%;
  }

  .site-rail {
    position: relative;
    min-height: auto;
    grid-template-rows: auto auto auto;
    grid-template-columns: 1fr;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 0.85rem clamp(1rem, 3vw, 1.5rem);
    gap: 0.85rem;
  }

  .rail-brand-row .brand {
    grid-template-columns: 48px 1fr;
  }

  .rail-brand-row .brand-logo {
    width: 48px;
    height: 48px;
    max-width: 48px;
    max-height: 48px;
    flex-basis: 48px;
  }

  .rail-nav {
    flex-direction: row;
    flex-wrap: wrap;
    align-self: stretch;
    gap: 0.35rem;
  }

  .rail-nav a {
    border-left: 0;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.45rem 0.7rem;
  }

  .rail-cta {
    width: auto;
    justify-self: start;
  }

  .page-main {
    width: 100%;
    padding-inline: clamp(1rem, 3vw, 1.75rem);
  }

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

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

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

@media (max-width: 680px) {
  h1 { font-size: clamp(2.1rem, 11vw, 3.2rem); }
  h2 { font-size: clamp(1.65rem, 8vw, 2.35rem); }

  .cards-grid,
  .process-list,
  .geo-chips,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    border-left-width: 2px;
    padding-left: 0.85rem;
  }

  .hero-visual {
    min-height: 220px;
  }

  .section:nth-of-type(even),
  .site-footer {
    margin-inline: calc(-1 * clamp(1rem, 3vw, 1.75rem));
    padding-inline: clamp(1rem, 3vw, 1.75rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .card:hover,
  .button-primary:hover,
  .button-secondary:hover,
  .rail-cta:hover {
    transform: none;
  }
}