/* Slon12 CC — variant 1: ember side-rail industrial layout */
:root {
  --page: #0c0c0c;
  --surface: #481d14;
  --surface-alt: #1a120f;
  --text: #f4f5fb;
  --muted: #b8a9a0;
  --accent: #f1613f;
  --accent-dim: #9c3922;
  --accent-soft: #f1613f22;
  --rail-w: clamp(220px, 18vw, 320px);
  --canvas-max: 1680px;
  --radius: 2px;
  --section-space: clamp(56px, 7vw, 112px);
  --gutter: clamp(20px, 3vw, 40px);
  --font-display: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

*, *::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-body);
  background: var(--page);
  color: var(--text);
}

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-family: var(--font-display);
  font-size: clamp(2.2rem, 4.8vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  margin-bottom: 1.25rem;
  font-weight: 800;
  text-transform: uppercase;
}

h2 {
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3vw, 2.75rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 0.85rem;
  font-weight: 700;
}

h3 {
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
  line-height: 1.25;
  font-weight: 650;
}

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

/* ── Page shell: fixed side rail + fluid canvas ── */
.page-frame {
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  min-height: 100vh;
  width: 100%;
}

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

.page-main {
  flex: 1;
  width: min(var(--canvas-max), 100%);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* ── Side rail ── */
.site-rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: clamp(20px, 2.5vw, 36px) clamp(16px, 2vw, 28px);
  background: linear-gradient(180deg, var(--surface-alt) 0%, var(--page) 100%);
  border-right: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  z-index: 40;
  overflow: hidden;
}

.site-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 6%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 6%, transparent) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.35;
  pointer-events: none;
}

.rail-brand-row,
.rail-nav-row,
.rail-cta-row {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.rail-brand-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand {
  display: grid;
  grid-template-columns: min(64px, 100%) 1fr;
  align-items: center;
  gap: 0.65rem;
  font-weight: 800;
  font-size: clamp(0.95rem, 1.2vw, 1.1rem);
  min-width: 0;
  line-height: 1.15;
}

.brand-logo {
  display: block;
  width: min(64px, 100%);
  height: min(64px, 100%);
  max-width: 64px;
  max-height: 64px;
  border-radius: var(--radius);
  overflow: hidden;
  flex-shrink: 0;
}

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

.brand small {
  display: block;
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.rail-nav-row nav a {
  display: block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 0.55rem 0.7rem;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color 0.25s ease, border-color 0.25s ease, background 0.25s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

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

.rail-cta-row {
  margin-top: auto;
  padding-top: 1rem;
}

.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-size: 0.82rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
}

.rail-cta-row .header-cta {
  width: 100%;
  text-align: center;
}

.header-cta,
.button-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-dim));
  color: var(--page);
}

.button-secondary {
  background: transparent;
  color: var(--text);
  border-color: color-mix(in srgb, var(--text) 22%, transparent);
}

.header-cta:hover,
.button:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 28%, transparent);
}

/* ── Bands & rhythm ── */
.band {
  padding-block: var(--section-space);
  border-bottom: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.band:nth-child(even) {
  background: color-mix(in srgb, var(--surface) 18%, var(--page));
}

.section { padding: 0; }

.section-inner {
  width: 100%;
  max-width: none;
  margin: 0;
}

.section-heading {
  max-width: 72ch;
  margin-bottom: clamp(1.5rem, 3vw, 2.75rem);
}

.section-heading > p { font-size: 1.05rem; }

.eyebrow,
.section-kicker {
  display: inline-block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-weight: 800;
  margin-bottom: 0.85rem;
  color: var(--accent);
  padding: 0.25rem 0.55rem;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: var(--accent-soft);
}

.lead {
  font-size: clamp(1rem, 1.5vw, 1.25rem);
  max-width: 62ch;
  color: color-mix(in srgb, var(--text) 88%, var(--muted));
}

.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) 7%, transparent);
  max-width: 62ch;
}

/* ── Hero: vexon-style split ── */
.component-hero {
  padding-top: clamp(2rem, 4vw, 4rem);
  padding-bottom: clamp(2rem, 5vw, var(--section-space));
}

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

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

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

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

.hero-visual {
  overflow: hidden;
  width: 100%;
  aspect-ratio: 4 / 3;
  min-height: clamp(240px, 32vw, 420px);
  background: var(--surface-alt);
  border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  border-radius: var(--radius);
  box-shadow:
    inset 0 0 0 1px color-mix(in srgb, var(--text) 6%, transparent),
    0 24px 64px color-mix(in srgb, var(--page) 40%, transparent);
}

.scene-archive { display: none !important; }

/* ── Stats: horizontal metric strip ── */
.band-stats .stats-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1.25rem);
}

.stat {
  padding: 1.35rem 1.25rem;
  background: var(--surface-alt);
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
}

.stat strong {
  display: block;
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  color: var(--accent);
  font-weight: 800;
}

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

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

/* ── Card grids: bento for services, masonry for benefits ── */
.cards-grid {
  display: grid;
  gap: clamp(0.75rem, 1.5vw, 1rem);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

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

.band-benefits .cards-grid .card { grid-column: span 4; }
.band-benefits .cards-grid .card:nth-child(4) { grid-column: span 6; }
.band-benefits .cards-grid .card:nth-child(5) { grid-column: span 6; }

.band-scenarios .cards-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.band-scenarios .cards-grid .card { grid-column: auto; }

.card {
  min-width: 0;
  padding: clamp(1.1rem, 2vw, 1.5rem);
  background: var(--surface-alt);
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
}

.card-icon,
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 0.85rem;
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 30%, transparent);
  background: var(--accent-soft);
  border-radius: var(--radius);
}

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

.card-label {
  display: block;
  color: var(--accent);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  margin-bottom: 0.55rem;
}

.card-value {
  display: block;
  margin-top: auto;
  padding-top: 0.85rem;
  color: var(--accent);
  font-size: 1.05rem;
}

.card small {
  display: block;
  color: var(--muted);
  margin-top: 0.35rem;
  font-size: 0.82rem;
}

/* ── Process: vertical timeline ── */
.band-process .process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  position: relative;
}

.band-process .process-list li {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 1rem;
  padding: 1.35rem 1.25rem 1.35rem 0;
  border-bottom: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
  min-width: 0;
}

.band-process .process-list li:nth-child(odd) {
  padding-right: clamp(1rem, 3vw, 2.5rem);
  border-right: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
}

.band-process .process-list li:nth-child(even) {
  padding-left: clamp(1rem, 3vw, 2.5rem);
}

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

/* ── Geography: split panels ── */
.band-geography .geo-chips {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(0.75rem, 2vw, 1rem);
}

.geo-chip {
  padding: 1.25rem 1.35rem;
  background: var(--surface-alt);
  border: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  border-radius: var(--radius);
  min-height: 100%;
}

.geo-chip strong {
  display: block;
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  color: var(--text);
}

.geo-chip span {
  display: block;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

/* ── Guide: two-column chapters ── */
.band-guide .guide-body {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.75rem);
  min-width: 0;
}

.chapter {
  padding: 1.15rem 1.25rem;
  background: var(--surface-alt);
  border: 1px solid color-mix(in srgb, var(--text) 8%, transparent);
  border-radius: var(--radius);
  min-width: 0;
}

.chapter li {
  color: var(--muted);
  margin: 0.45rem 0;
  font-size: 0.92rem;
}

/* ── Tools split: calculator + FAQ ── */
.tools-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.band-tools .component-calculator,
.band-tools .component-faq {
  padding: 0;
}

.band-tools .component-calculator .section-inner,
.band-tools .component-faq .section-inner {
  padding: clamp(1.25rem, 2.5vw, 2rem);
  background: var(--surface-alt);
  border: 1px solid color-mix(in srgb, var(--accent) 25%, transparent);
  border-radius: var(--radius);
  height: 100%;
}

.calculator-grid,
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.contact-form,
.calculator-form {
  display: grid;
  gap: 0.85rem;
  background: var(--page);
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid color-mix(in srgb, var(--text) 10%, transparent);
}

.contact-form label,
.calculator-form label {
  display: grid;
  gap: 0.3rem;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid color-mix(in srgb, var(--text) 18%, transparent);
  background: var(--surface-alt);
  color: var(--text);
  padding: 0.8rem 0.85rem;
  border-radius: var(--radius);
}

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

output {
  font-size: 1.05rem;
  color: var(--accent);
  font-weight: 800;
}

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

/* ── FAQ ── */
.faq-list { max-width: none; }

.faq-list details {
  border-bottom: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  padding: 0.85rem 0;
}

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--text);
  list-style: none;
}

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

.faq-list p {
  padding-right: 0.5rem;
  margin-bottom: 0;
  font-size: 0.92rem;
}

/* ── Contact ── */
.band-contact .contact-grid {
  grid-template-columns: minmax(0, 1fr) minmax(320px, 0.95fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

/* ── Footer ── */
.site-footer {
  padding: clamp(2.5rem, 5vw, 4rem) var(--gutter);
  background: var(--surface-alt);
  border-top: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  width: 100%;
}

.site-footer .section-inner {
  width: min(var(--canvas-max), 100%);
  margin-inline: auto;
}

.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: 0.35rem 0;
  font-size: 0.88rem;
}

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

.site-footer h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent);
  margin-bottom: 0.65rem;
}

/* ── Icon motion (>=10s loops) ── */
.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); } }

/* ── Wide desktop balance ── */
@media (min-width: 1440px) {
  .page-main { padding-inline: clamp(var(--gutter), 4vw, 56px); }
  .hero-grid { grid-template-columns: minmax(0, 1.2fr) minmax(360px, 0.8fr); }
}

@media (min-width: 2160px) {
  :root { --canvas-max: 1920px; --rail-w: 320px; }
  .cards-grid { gap: 1.25rem; }
}

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

  .site-rail {
    position: relative;
    height: auto;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem 1rem;
    padding: 0.85rem var(--gutter);
    border-right: none;
    border-bottom: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
  }

  .rail-brand-row { flex: 1 1 auto; min-width: 0; }

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

  .brand-logo { max-width: 48px; max-height: 48px; }

  .rail-nav-row {
    flex: 1 1 100%;
    order: 3;
  }

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

  .rail-nav-row nav a {
    border-left: none;
    border-bottom: 2px solid transparent;
    border-radius: var(--radius);
    padding: 0.45rem 0.65rem;
  }

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

  .rail-cta-row {
    margin-top: 0;
    flex: 0 0 auto;
  }

  .rail-cta-row .header-cta { width: auto; }

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

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

  .cards-grid,
  .band-services .cards-grid .card,
  .band-benefits .cards-grid .card,
  .band-scenarios .cards-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .band-services .cards-grid .card,
  .band-benefits .cards-grid .card,
  .band-scenarios .cards-grid .card {
    grid-column: auto;
  }

  .band-process .process-list { grid-template-columns: 1fr; }

  .band-process .process-list li:nth-child(odd),
  .band-process .process-list li:nth-child(even) {
    padding: 1.1rem 0;
    border-right: none;
  }

  .band-guide .guide-body { grid-template-columns: 1fr; }

  .tools-split { grid-template-columns: 1fr; }

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

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* ── Mobile ── */
@media (max-width: 640px) {
  .page-main { padding-inline: 16px; }

  .site-rail { padding: 0.75rem 16px; }

  .hero-actions { flex-direction: column; }

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

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

  h1 { font-size: clamp(1.85rem, 9vw, 2.75rem); }
}

@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 { transform: none; }
  .header-cta:hover, .button:hover { transform: none; box-shadow: none; }
}