/* Variant 1 — Ember Forge rail layout (GetLayers: vexon-hero + ember-rust palette) */
:root {
  --page: #0c0c0c;
  --surface: #1a1210;
  --surface-raised: #481d14;
  --text: #f5ede0;
  --muted: #b6ada0;
  --accent: #f1613f;
  --accent-alt: #9c3922;
  --accent-glow: color-mix(in srgb, var(--accent) 28%, transparent);
  --border: color-mix(in srgb, var(--text) 14%, transparent);
  --border-strong: color-mix(in srgb, var(--accent) 42%, transparent);
  --radius: 2px;
  --radius-soft: 6px;
  --rail-width: clamp(240px, 18vw, 300px);
  --content-max: 1440px;
  --section-space: clamp(4rem, 8vw, 7rem);
  --font-display: "Bahnschrift", "Segoe UI", system-ui, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: "Cascadia Mono", "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: 1.65;
  font-family: var(--font-body);
  background: var(--page);
  color: var(--text);
  background-image:
    linear-gradient(var(--accent-glow) 1px, transparent 1px),
    linear-gradient(90deg, var(--accent-glow) 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);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h1 {
  font-size: clamp(2.4rem, 5.8vw, 5.5rem);
  line-height: 0.95;
  margin-bottom: 1.25rem;
  text-transform: uppercase;
}

h2 {
  font-size: clamp(1.75rem, 3.2vw, 3rem);
  line-height: 1.05;
  margin-bottom: 0.85rem;
}

h3 {
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.2;
}

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

/* ── Shell: fixed side rail + scroll canvas ── */
.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;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(1rem, 2vw, 1.75rem);
  border-right: 1px solid var(--border);
  background: color-mix(in srgb, var(--page) 92%, var(--surface-raised));
  z-index: 40;
  min-width: 0;
}

.rail-brand-row {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-width: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: 0.95rem;
  min-width: 0;
  line-height: 1.2;
}

.brand-logo {
  display: block;
  width: 48px;
  height: 48px;
  max-width: 64px;
  max-height: 64px;
  border-radius: var(--radius-soft);
  object-fit: contain;
  overflow: hidden;
  flex: 0 0 auto;
  border: 1px solid var(--border-strong);
}

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

.brand small {
  display: block;
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}

.rail-nav {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-top: auto;
  min-width: 0;
}

.rail-nav a {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  padding: 0.55rem 0.65rem;
  border-left: 2px solid transparent;
  color: var(--muted);
  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);
}

.header-cta, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.15rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-weight: 800;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.rail-cta {
  margin-top: 0.5rem;
  width: 100%;
  white-space: nowrap;
}

.header-cta, .button-primary {
  background: var(--accent);
  color: var(--page);
}

.header-cta:hover, .button-primary:hover {
  background: color-mix(in srgb, var(--accent) 85%, white);
  box-shadow: 0 0 24px var(--accent-glow);
}

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

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

.page-canvas {
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.page-main {
  flex: 1;
  width: 100%;
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 3vw, 3rem);
}

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

/* ── Hero: vexon asymmetric 8/4 ── */
.hero {
  padding: clamp(2.5rem, 6vw, 5rem) 0 var(--section-space);
  border-bottom: 1px solid var(--border);
}

.hero-frame {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: end;
}

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

.hero-aside {
  min-width: 0;
  display: flex;
  align-items: stretch;
}

.eyebrow, .section-kicker {
  display: block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 800;
  margin-bottom: 1rem;
  color: var(--accent);
  font-family: var(--font-mono);
}

.lead {
  font-size: clamp(1rem, 1.6vw, 1.25rem);
  max-width: 42rem;
  color: var(--text);
}

.hero-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 2rem 0 1rem;
}

.geo-line {
  font-size: 0.75rem;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

.hero-visual {
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: 280px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-soft);
  background: var(--surface);
  position: relative;
}

.hero-visual svg {
  width: 100%;
  height: 100%;
}

.hero-visual::after {
  content: none;
}

/* ── Sections rhythm ── */
.section {
  padding: var(--section-space) 0;
  border-bottom: 1px solid var(--border);
}

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

.section-heading {
  max-width: 52rem;
  margin-bottom: clamp(1.75rem, 3vw, 2.75rem);
}

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

.fact-disclaimer {
  font-size: 0.76rem !important;
  padding: 0.6rem 0.85rem;
  border-left: 3px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  margin-top: 1rem;
}

/* ── Cards: bento grid ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 0.85rem;
}

.card {
  min-width: 0;
  padding: clamp(1.1rem, 2vw, 1.6rem);
  border-radius: var(--radius-soft);
  background: var(--surface);
  border: 1px solid var(--border);
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.card:nth-child(1), .card:nth-child(4) { grid-column: span 5; }
.card:nth-child(2), .card:nth-child(5) { grid-column: span 7; }
.card:nth-child(3) { grid-column: span 6; }

.card:hover {
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

.card p { margin-bottom: 0; flex: 1; }

.card-icon, .step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 0.85rem;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  background: color-mix(in srgb, var(--accent) 6%, transparent);
  border-radius: var(--radius);
}

.card-icon svg, .step-icon svg {
  width: 26px;
  height: 26px;
  overflow: visible;
}

.card-label {
  display: block;
  color: var(--accent);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.55rem;
  font-family: var(--font-mono);
}

.card-value {
  display: block;
  margin-top: 0.85rem;
  color: var(--text);
  font-size: 1.05rem;
  font-weight: 700;
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.35rem;
  font-size: 0.78rem;
}

/* Icon motion */
.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); } }

/* ── Stats band ── */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}

.stat {
  padding: 1.2rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
}

.stat strong {
  display: block;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-family: var(--font-mono);
  color: var(--accent);
}

.stat span { font-weight: 700; color: var(--text); }

.stat p { font-size: 0.82rem; margin: 0.45rem 0 0; }

/* ── Process: vertical timeline ── */
.process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  position: relative;
  max-width: 56rem;
}

.process-list::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(var(--accent), color-mix(in srgb, var(--accent) 20%, transparent));
}

.process-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.35rem 0 1.35rem 0.5rem;
  position: relative;
}

.process-list li + li { border-top: 1px solid var(--border); }

.step-icon {
  margin-bottom: 0;
  position: relative;
  z-index: 1;
  background: var(--page);
}

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

.geo-chip {
  padding: 1.15rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  background: var(--surface);
  border-left: 4px solid var(--accent);
}

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

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

/* ── Guide chapters: two-column ledger ── */
.guide-body {
  min-width: 0;
  column-count: 2;
  column-gap: clamp(1.5rem, 3vw, 2.5rem);
}

.chapter {
  min-width: 0;
  break-inside: avoid;
  margin-bottom: 1.75rem;
  padding: 1.1rem 1.15rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
}

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

/* ── FAQ accordion ── */
.faq-list { max-width: 52rem; }

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

.faq-list summary {
  cursor: pointer;
  font-weight: 800;
  list-style: none;
  padding-right: 1.5rem;
}

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

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

/* ── Forms ── */
.contact-grid, .calculator-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.contact-form, .calculator-form {
  display: grid;
  gap: 0.9rem;
  background: var(--surface);
  padding: clamp(1.1rem, 2vw, 1.6rem);
  border-radius: var(--radius-soft);
  border: 1px solid var(--border);
}

.contact-form label, .calculator-form label {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--border);
  background: var(--page);
  color: var(--text);
  padding: 0.8rem 0.85rem;
  border-radius: var(--radius);
}

input:focus, select:focus, textarea:focus {
  outline: 2px solid color-mix(in srgb, var(--accent) 50%, transparent);
  outline-offset: 1px;
}

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

output {
  font-size: 1.05rem;
  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 var(--border-strong);
  background: color-mix(in srgb, var(--surface) 90%, var(--page));
  padding: clamp(1.5rem, 3vw, 2.75rem);
  border-radius: var(--radius-soft);
}

/* ── Footer ── */
.site-footer {
  padding: clamp(2.5rem, 5vw, 4rem) 0;
  background: color-mix(in srgb, var(--surface-raised) 35%, var(--page));
  border-top: 1px solid var(--border-strong);
  margin-top: 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: clamp(1.25rem, 3vw, 2.5rem);
}

.footer-brand { font-size: 1.35rem; color: var(--text); }

.site-footer a {
  display: block;
  color: var(--muted);
  margin: 0.3rem 0;
  font-size: 0.88rem;
}

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

.site-footer h3 {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 0.65rem;
}

/* ── Tablet ── */
@media (max-width: 1100px) {
  .page-shell {
    grid-template-columns: 1fr;
  }

  .site-rail {
    position: relative;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 0.85rem clamp(1rem, 3vw, 1.5rem);
    gap: 0.75rem 1rem;
  }

  .rail-brand-row { flex: 1 1 auto; }

  .rail-nav {
    flex-direction: row;
    flex-wrap: wrap;
    margin-top: 0;
    order: 3;
    width: 100%;
  }

  .rail-nav a {
    border-left: none;
    border-bottom: 2px solid transparent;
    padding: 0.4rem 0.55rem;
  }

  .rail-nav a:hover { border-bottom-color: var(--accent); border-left-color: transparent; }

  .rail-cta {
    width: auto;
    margin-top: 0;
    margin-left: auto;
  }

  .hero-frame {
    grid-template-columns: 1fr;
    align-items: start;
  }

  .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card, .card:nth-child(n) { grid-column: span 1; }

  .stats-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .geo-chips { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .guide-body { column-count: 1; }
  .contact-grid, .calculator-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Mobile ── */
@media (max-width: 640px) {
  .page-main { padding: 0 1rem; }

  .site-rail {
    flex-direction: column;
    align-items: stretch;
  }

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

  .rail-cta { width: 100%; margin-left: 0; }

  h1 { font-size: clamp(2rem, 11vw, 3.2rem); }

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

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

  .hero-actions { flex-direction: column; }
  .hero-actions .button { width: 100%; }

  .section { padding: 3.5rem 0; }
}

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

  .card,
  .header-cta,
  .button,
  .rail-nav a { transition: none; }

  .card:hover { transform: none; }

  .icon-draw path,
  .icon-pulse,
  .icon-slide,
  .icon-spin,
  .card-icon,
  .step-icon,
  .card-icon svg,
  .step-icon svg,
  .card-icon path,
  .step-icon path {
    animation: none !important;
  }
}