:root {
  --page: #0c0c0c;
  --surface: #161210;
  --surface-alt: #241815;
  --surface-elevated: #2f1c18;
  --text: #f4f5fb;
  --muted: #a89f94;
  --accent: #f1613f;
  --accent-alt: #9c3922;
  --line: color-mix(in srgb, var(--accent) 28%, transparent);
  --line-soft: color-mix(in srgb, var(--text) 14%, transparent);
  --radius: 8px;
  --radius-lg: 14px;
  --section-space: clamp(56px, 7vw, 96px);
  --rail-width: clamp(220px, 16vw, 280px);
  --content-max: min(1480px, calc(100% - clamp(24px, 4vw, 64px)));
  --font-display: Georgia, "Times New Roman", serif;
  --font-body: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Segoe UI Mono", 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: 1.65;
  font-family: var(--font-body);
  background: var(--page);
  color: var(--text);
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 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, h2, h3 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h1 {
  font-size: clamp(2.4rem, 4.8vw, 4.6rem);
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.85rem, 3.2vw, 3rem);
  margin-bottom: 0.85rem;
}

h3 {
  font-size: clamp(1.1rem, 1.6vw, 1.35rem);
  margin-bottom: 0.55rem;
}

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

.contract-preservation {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  pointer-events: none;
}

.page-shell {
  display: grid;
  grid-template-columns: 1fr;
  min-height: 100vh;
}

.site-rail {
  position: relative;
  z-index: 40;
}

.rail-header {
  background: color-mix(in srgb, var(--page) 92%, var(--surface-alt));
  border-bottom: 1px solid var(--line-soft);
}

.rail-inner {
  width: min(var(--content-max), calc(100% - 32px));
  margin: 0 auto;
  min-height: 72px;
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.brand {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.05rem;
  white-space: nowrap;
  flex: 0 0 auto;
  min-width: 0;
}

.brand-logo {
  display: block;
  width: clamp(40px, 4vw, 64px);
  height: clamp(40px, 4vw, 64px);
  max-width: 64px;
  max-height: 64px;
  border-radius: calc(var(--radius) + 2px);
  object-fit: contain;
  overflow: hidden;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  background: var(--surface-alt);
}

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

.brand small {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.rail-header nav,
.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: center;
  margin-left: auto;
  min-width: 0;
}

.rail-header nav a,
.site-header nav a {
  font-size: 0.74rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding: 0.48rem 0.72rem;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  white-space: nowrap;
  background: color-mix(in srgb, var(--surface) 70%, transparent);
}

.rail-header nav a:hover,
.site-header nav a:hover {
  color: var(--text);
  border-color: var(--accent);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.2rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-weight: 700;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.header-cta {
  flex: 0 0 auto;
  white-space: nowrap;
}

.header-cta,
.button-primary {
  background: linear-gradient(135deg, var(--accent), color-mix(in srgb, var(--accent-alt) 55%, var(--accent)));
  color: var(--page);
}

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

.button-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.page-canvas {
  min-width: 0;
}

.page-canvas main {
  width: 100%;
}

.section-inner {
  width: var(--content-max);
  margin: 0 auto;
}

.section {
  padding: var(--section-space) 0;
  position: relative;
}

.section:nth-of-type(even) {
  background: color-mix(in srgb, var(--surface-alt) 55%, transparent);
}

.section-heading {
  max-width: 780px;
  margin-bottom: clamp(1.75rem, 3vw, 2.75rem);
}

.section-heading > p,
.lead {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  max-width: 62ch;
}

.eyebrow,
.section-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 700;
  margin-bottom: 0.85rem;
  color: var(--accent);
}

.fact-disclaimer {
  font-size: 0.78rem !important;
  padding: 0.65rem 0.85rem;
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  max-width: 62ch;
}

.hero {
  padding: clamp(2.5rem, 6vw, 5rem) 0 var(--section-space);
  background:
    radial-gradient(circle at 78% 18%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 42%),
    linear-gradient(160deg, var(--page), color-mix(in srgb, var(--surface-alt) 80%, var(--page)));
}

.hero-grid {
  display: grid;
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: center;
}

.hero-copy { min-width: 0; }

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

.geo-line {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.hero-visual {
  overflow: hidden;
  width: 100%;
  min-height: clamp(260px, 34vw, 480px);
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    linear-gradient(145deg, var(--surface-alt), var(--surface-elevated)),
    repeating-linear-gradient(0deg, transparent, transparent 47px, var(--line) 47px, var(--line) 48px),
    repeating-linear-gradient(90deg, transparent, transparent 47px, var(--line) 47px, var(--line) 48px);
  box-shadow: 0 24px 64px color-mix(in srgb, var(--accent) 10%, transparent);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  grid-column: span 6;
  min-width: 0;
  padding: clamp(1.15rem, 2vw, 1.6rem);
  border-radius: var(--radius-lg);
  background: var(--surface);
  border: 1px solid var(--line-soft);
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  box-shadow: 0 16px 40px color-mix(in srgb, var(--page) 50%, transparent);
}

.card:nth-child(1) { grid-column: span 12; }

.card p { margin-bottom: 0; }

.card-icon,
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 1rem;
  color: var(--accent);
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  border-radius: var(--radius);
}

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

.icon-draw path { stroke-dasharray: 34 8; animation: iconDraw 12s linear infinite; }
.icon-pulse { transform-box: fill-box; transform-origin: center; animation: iconPulse 12s ease-in-out infinite; }
.icon-slide { animation: iconSlide 12s ease-in-out infinite; }
.icon-spin { transform-box: fill-box; transform-origin: center; animation: iconSpin 14s linear infinite; }

@keyframes iconDraw { to { stroke-dashoffset: -84; } }
@keyframes iconPulse { 50% { transform: scale(0.9); opacity: 0.75; } }
@keyframes iconSlide { 50% { transform: translateX(4px); } }
@keyframes iconSpin { to { transform: rotate(360deg); } }

.card-label {
  display: block;
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.65rem;
}

.card-value {
  display: block;
  margin-top: 1rem;
  color: var(--accent);
  font-size: 1.15rem;
  font-family: var(--font-mono);
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.45rem;
  font-size: 0.85rem;
}

.process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.process-list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem 1.25rem;
  padding: 1.35rem 1.4rem;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  position: relative;
}

.process-list li::before {
  content: "";
  position: absolute;
  left: 1.65rem;
  top: calc(100% + 0.5rem);
  width: 1px;
  height: 1rem;
  background: var(--line);
}

.process-list li:last-child::before { display: none; }

.step-icon { flex: 0 0 44px; margin-bottom: 0; }

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

.stat {
  padding: 1.25rem 1.1rem;
  border-top: 2px solid var(--accent);
  background: var(--surface);
  border-radius: 0 0 var(--radius) var(--radius);
  border-left: 1px solid var(--line-soft);
  border-right: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.stat strong {
  display: block;
  font-size: 2rem;
  font-family: var(--font-mono);
  color: var(--accent);
}

.stat span { font-weight: 700; color: var(--text); }
.stat p { font-size: 0.82rem; margin: 0.4rem 0 0; }

.geo-chips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

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

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

.geo-chip span {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.45rem;
}

.guide-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  min-width: 0;
}

.chapter {
  min-width: 0;
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: var(--surface);
}

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

.faq-list { max-width: 920px; }

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

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--text);
}

.faq-list p { padding-right: 2rem; }

.contact-grid,
.calculator-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.contact-form,
.calculator-form {
  display: grid;
  gap: 1rem;
  background: var(--surface);
  padding: 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
}

.contact-form label,
.calculator-form label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line-soft);
  background: var(--page);
  color: var(--text);
  padding: 0.85rem;
  border-radius: var(--radius);
}

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

output {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 800;
  font-family: var(--font-mono);
}

.form-message { color: var(--accent); margin: 0; }

.component-calculator .section-inner {
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--surface) 85%, var(--page));
  padding: clamp(24px, 4vw, 48px);
  border-radius: var(--radius-lg);
}

.component-calculator .calculator-form {
  background: var(--page);
}

.site-footer {
  padding: 4rem 0;
  background: color-mix(in srgb, var(--surface-alt) 90%, var(--page));
  border-top: 1px solid var(--line-soft);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 2rem;
}

.footer-brand { font-size: 1.45rem; font-family: var(--font-display); }

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

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

@media (min-width: 1100px) {
  .page-shell {
    grid-template-columns: var(--rail-width) minmax(0, 1fr);
  }

  .site-rail {
    position: sticky;
    top: 0;
    height: 100vh;
    border-right: 1px solid var(--line-soft);
    background: color-mix(in srgb, var(--page) 94%, var(--surface-alt));
  }

  .rail-header {
    height: 100%;
    border-bottom: none;
    background: transparent;
  }

  .rail-inner {
    width: calc(100% - 32px);
    margin: 0 auto;
    min-height: 100%;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    padding: 1.5rem 0 1.25rem;
    gap: 1.5rem;
  }

  .brand {
    grid-template-columns: auto 1fr;
    width: 100%;
    white-space: normal;
  }

  .rail-header nav,
  .site-header nav {
    margin-left: 0;
    flex-direction: column;
    align-items: stretch;
    width: 100%;
  }

  .rail-header nav a,
  .site-header nav a {
    text-align: left;
    border-radius: var(--radius);
  }

  .header-cta {
    width: 100%;
    margin-top: auto;
  }

  .hero-grid {
    grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
    gap: clamp(2rem, 4vw, 4rem);
  }

  .page-canvas .section-inner,
  .page-canvas .hero .section-inner {
    width: min(1480px, calc(100% - clamp(40px, 5vw, 80px)));
  }
}

@media (min-width: 1440px) {
  :root { --rail-width: 280px; }

  .cards-grid .card { grid-column: span 3; }
  .cards-grid .card:nth-child(1) { grid-column: span 6; }

  .process-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .process-list li {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .process-list li::before { display: none; }
}

@media (min-width: 2160px) {
  :root {
    --content-max: min(1680px, calc(100% - 120px));
    --section-space: 104px;
  }

  .page-canvas .section-inner,
  .page-canvas .hero .section-inner {
    width: var(--content-max);
  }

  .hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(520px, 1.1fr);
  }
}

@media (max-width: 1099px) {
  .rail-header nav { display: none; }
  .header-cta { margin-left: auto; }
  .hero-grid,
  .contact-grid,
  .calculator-grid { grid-template-columns: 1fr; }
  .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card, .card:nth-child(1) { grid-column: auto; }
  .process-list { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .geo-chips { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-body { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .rail-inner,
  .section-inner {
    width: min(100% - 28px, var(--content-max));
  }

  .site-rail { position: relative; }
  .header-cta { padding: 0.65rem 0.85rem; font-size: 0.74rem; }
  .hero { padding-top: 2rem; }
  .hero-visual { min-height: 240px; }
  .cards-grid,
  .process-list,
  .stats-grid,
  .geo-chips,
  .footer-grid { grid-template-columns: 1fr; }
  .section { padding: 64px 0; }
  h1 { font-size: clamp(2.2rem, 12vw, 3.6rem); }
  h2 { font-size: clamp(1.75rem, 8vw, 2.4rem); }
  .card { padding: 1.15rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .card-icon, .step-icon,
  .card-icon svg, .step-icon svg,
  .card-icon path, .step-icon path,
  .card { animation: none !important; transition: none !important; }
  .icon-draw path, .icon-pulse, .icon-slide, .icon-spin { animation: none !important; }
}