/* Blueprint Side-Rail — variant 1 */
:root {
  --page: #030508;
  --surface: #0c1219;
  --surface-elevated: #121a24;
  --text: #eef4ff;
  --muted: #8a9bb3;
  --accent: #4c97ff;
  --accent-alt: #69beff;
  --accent-glow: #8dd8ff;
  --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, 300px);
  --content-max: 1480px;
  --section-space: clamp(4rem, 7vw, 6.5rem);
  --font-display: "Bahnschrift", "Segoe UI Variable Display", "Arial Narrow", system-ui, sans-serif;
  --font-body: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: ui-monospace, "Cascadia Mono", "SF Mono", Consolas, monospace;
}

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

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

body.layout-blueprint-rail {
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  line-height: 1.62;
  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;
  background-position: calc(var(--rail-width) + 12px) 0;
}

body.layout-blueprint-rail h1,
body.layout-blueprint-rail h2,
body.layout-blueprint-rail h3 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
}

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

.page-frame {
  display: grid;
  grid-template-columns: var(--rail-width) minmax(0, 1fr);
  min-height: 100vh;
  width: 100%;
}

.site-rail {
  position: sticky;
  top: 0;
  align-self: start;
  z-index: 40;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 1.5rem;
  min-height: 100vh;
  padding: 1.25rem 1rem 1.5rem;
  border-right: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--page) 92%, var(--surface));
  backdrop-filter: blur(12px);
}

.rail-brand-row,
.rail-nav-grid,
.rail-cta-row {
  display: flex;
  flex-direction: column;
  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;
}

.brand-logo {
  display: block;
  width: 56px;
  height: 56px;
  max-width: 64px;
  max-height: 64px;
  border-radius: var(--radius);
  overflow: hidden;
  flex: 0 0 auto;
}

.brand-logo svg { width: 100%; height: 100%; }
.brand small { display: block; font-size: 0.62rem; font-weight: 500; color: var(--muted); overflow-wrap: anywhere; }

.rail-nav-grid nav {
  display: grid;
  gap: 0.35rem;
  align-content: start;
}

.rail-nav-grid nav a {
  display: flex;
  align-items: center;
  min-height: 2.25rem;
  padding: 0.45rem 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

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

.rail-cta-row .header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1rem;
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

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

.button:hover,
.header-cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 24px color-mix(in srgb, var(--accent) 28%, transparent);
}

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

.main-flow {
  flex: 1 1 auto;
  width: min(var(--content-max), calc(100% - clamp(1.5rem, 4vw, 4rem)));
  margin: 0 auto;
}

.surface-block,
.surface-hero {
  position: relative;
  padding: var(--section-space) 0;
}

.surface-block::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-strong), transparent);
}

.section-inner,
.hero-shell {
  width: 100%;
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(1.5rem, 4vw, 3.5rem);
  align-items: stretch;
}

.hero-stage {
  display: grid;
  align-content: stretch;
  min-height: clamp(280px, 42vw, 520px);
}

.hero-visual {
  width: 100%;
  min-height: clamp(280px, 42vw, 520px);
  aspect-ratio: 4 / 3;
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) * 2);
  background:
    radial-gradient(circle at 30% 20%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 42%),
    linear-gradient(145deg, var(--surface), var(--surface-elevated));
  overflow: hidden;
}

.hero-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(1rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 2);
  background: color-mix(in srgb, var(--surface) 88%, var(--page));
}

.eyebrow,
.section-kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--accent-alt);
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.2rem, 4.8vw, 4.4rem);
  line-height: 0.98;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.65rem, 3.2vw, 2.75rem);
  line-height: 1.06;
  margin-bottom: 0.85rem;
}

h3 {
  font-size: clamp(1.05rem, 1.8vw, 1.35rem);
  line-height: 1.2;
}

.lead {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  max-width: 56ch;
}

.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;
  color: var(--muted);
  letter-spacing: 0.04em;
}

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

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

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

.layout-bento .card {
  grid-column: span 4;
  min-width: 0;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 2);
  background: var(--surface);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.layout-bento .card:nth-child(3n+1) { grid-column: span 5; }
.layout-bento .card:nth-child(3n+2) { grid-column: span 4; }
.layout-bento .card:nth-child(3n) { grid-column: span 3; }

.layout-bento .card:hover {
  transform: translateY(-4px);
  border-color: var(--line-strong);
}

.layout-timeline .process-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  counter-reset: step;
}

.layout-timeline .process-list li {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0.85rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-top: 2px solid var(--accent);
  border-radius: calc(var(--radius) * 2);
  background: var(--surface);
  min-width: 0;
}

.layout-stagger .cards-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.85rem;
}

.layout-stagger .card {
  grid-column: span 2;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 2);
  background: var(--surface);
}

.layout-stagger .card:nth-child(5n+1),
.layout-stagger .card:nth-child(5n+2) { grid-column: span 3; }

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

.layout-dual .card {
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 2);
  background: var(--surface);
}

.layout-dual .card:nth-child(5) {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: start;
}

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

.layout-geo-band .geo-chip {
  padding: 1.15rem 1.25rem;
  border-left: 3px solid var(--accent);
  border-radius: 0 calc(var(--radius) * 2) calc(var(--radius) * 2) 0;
  background: var(--surface);
}

.layout-geo-band .geo-chip strong,
.layout-geo-band .geo-chip span { display: block; }
.layout-geo-band .geo-chip span { color: var(--muted); font-size: 0.88rem; margin-top: 0.45rem; }

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

.layout-chapters .chapter {
  padding: 1.25rem 1.35rem;
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) * 2);
  background: var(--surface);
  min-width: 0;
}

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

.layout-faq-split .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.layout-faq-split .section-heading { margin-bottom: 0; }

.layout-faq-split .faq-list { max-width: none; }

.layout-contact-rail .section-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.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 color-mix(in srgb, var(--accent) 35%, transparent);
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-radius: calc(var(--radius) * 2);
}

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

.card-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-alt);
  margin-bottom: 0.55rem;
}

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

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

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

.faq-list summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}

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

.contact-form {
  display: grid;
  gap: 0.85rem;
  padding: 1.35rem;
  border: 1px solid var(--line-strong);
  border-radius: calc(var(--radius) * 2);
  background: var(--surface-elevated);
}

.contact-form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.78rem;
  color: var(--muted);
}

input, select, textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--page);
  color: var(--text);
  padding: 0.78rem 0.85rem;
  border-radius: var(--radius);
  font: inherit;
}

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

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

.site-footer {
  margin-top: auto;
  padding: 3rem 0;
  border-top: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--surface) 90%, var(--page));
}

.site-footer .section-inner {
  width: min(var(--content-max), calc(100% - clamp(1.5rem, 4vw, 4rem)));
  margin: 0 auto;
}

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

.footer-brand { font-size: 1.35rem; }
.site-footer a { display: block; color: var(--muted); margin: 0.35rem 0; }

.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(3px); } }
@keyframes iconSpin { to { transform: rotate(360deg); } }

@media (min-width: 1800px) {
  .main-flow,
  .site-footer .section-inner {
    width: min(1680px, calc(100% - 6rem));
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  }

  .layout-bento .cards-grid { gap: 1rem; }
}

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

  .site-rail {
    position: sticky;
    top: 0;
    min-height: auto;
    grid-template-columns: 1fr auto;
    grid-template-rows: auto auto;
    grid-template-areas:
      "brand cta"
      "nav nav";
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    border-right: none;
    border-bottom: 1px solid var(--line-strong);
  }

  .rail-brand-row { grid-area: brand; }
  .rail-cta-row { grid-area: cta; align-items: center; }
  .rail-nav-grid { grid-area: nav; }

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

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

  .rail-nav-grid nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
  }

  .rail-nav-grid nav a {
    border-left: none;
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 0.4rem 0.7rem;
  }

  body.layout-blueprint-rail {
    background-position: 0 0;
  }

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

  .layout-bento .cards-grid,
  .layout-stagger .cards-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .layout-bento .card,
  .layout-stagger .card { grid-column: auto; }

  .layout-timeline .process-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .layout-faq-split .section-inner,
  .layout-contact-rail .section-inner { grid-template-columns: 1fr; }
  .layout-chapters .guide-body { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .main-flow,
  .site-footer .section-inner {
    width: min(100% - 1.25rem, var(--content-max));
  }

  .layout-bento .cards-grid,
  .layout-stagger .cards-grid,
  .layout-dual .cards-grid,
  .layout-geo-band .geo-chips,
  .layout-timeline .process-list,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .layout-dual .card:nth-child(5) { grid-template-columns: 1fr; }

  h1 { font-size: clamp(2rem, 12vw, 3rem); }
  h2 { font-size: clamp(1.5rem, 8vw, 2.2rem); }

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

@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,
  .icon-draw, .icon-pulse, .icon-slide, .icon-spin {
    animation: none !important;
  }

  .layout-bento .card,
  .button, .header-cta {
    transition: none !important;
  }
}