@layer base, layout, components, utilities;

@layer base {
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

  :root {
    --xsi-bg: #f5f3ef;
    --xsi-bg-alt: #eeebe4;
    --xsi-bg-dark: #1a1814;
    --xsi-bg-concrete: #e8e5de;
    --xsi-bg-yellow: #f0e9c8;
    --xsi-ink: #1a1814;
    --xsi-ink-mid: #3d3a33;
    --xsi-ink-muted: #6b6760;
    --xsi-ink-faint: #9b9890;
    --xsi-accent: #c17f3e;
    --xsi-accent-light: #d4a264;
    --xsi-accent-dark: #9a5f28;
    --xsi-border: #d4cfc6;
    --xsi-border-strong: #b0aa9f;
    --xsi-white: #faf9f7;

    --xsi-font-heading: 'Outfit', sans-serif;
    --xsi-font-body: 'Work Sans', sans-serif;
    --xsi-font-mono: 'Courier New', 'Courier', monospace;

    --xsi-space-1: 0.25rem;
    --xsi-space-2: 0.5rem;
    --xsi-space-3: 0.75rem;
    --xsi-space-4: 1rem;
    --xsi-space-5: 1.25rem;
    --xsi-space-6: 1.5rem;
    --xsi-space-8: 2rem;
    --xsi-space-10: 2.5rem;
    --xsi-space-12: 3rem;
    --xsi-space-16: 4rem;
    --xsi-space-20: 5rem;
    --xsi-space-24: 6rem;
    --xsi-space-32: 8rem;

    --xsi-radius-sm: 2px;
    --xsi-radius-md: 4px;
    --xsi-radius-lg: 8px;
    --xsi-radius-xl: 16px;

    --xsi-shadow-sm: 0 1px 3px rgba(26,24,20,0.08), 0 1px 2px rgba(26,24,20,0.06);
    --xsi-shadow-md: 0 4px 12px rgba(26,24,20,0.10), 0 2px 4px rgba(26,24,20,0.06);
    --xsi-shadow-lg: 0 8px 24px rgba(26,24,20,0.12), 0 4px 8px rgba(26,24,20,0.08);
    --xsi-shadow-xl: 0 16px 48px rgba(26,24,20,0.14), 0 8px 16px rgba(26,24,20,0.10);

    --xsi-nav-h: 72px;
    --xsi-transition: 0.22s ease;
    --xsi-transition-slow: 0.4s ease;
  }

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

  body {
    font-family: var(--xsi-font-body);
    background-color: var(--xsi-bg);
    color: var(--xsi-ink);
    line-height: 1.65;
    font-size: 1rem;
    min-block-size: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
  }

  main { flex: 1; }

  img { max-inline-size: 100%; block-size: auto; display: block; }

  a { color: inherit; text-decoration: none; transition: color var(--xsi-transition); }

  ul { list-style: none; }

  address { font-style: normal; }
}

#pace .pace-progress {
  background: var(--xsi-accent) !important;
  block-size: 3px !important;
}

.xsi-mono {
  font-family: var(--xsi-font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.xsi-accent-text { color: var(--xsi-accent); }

.xsi-container {
  inline-size: min(100%, 1200px);
  margin-inline: auto;
  padding-inline: var(--xsi-space-6);
}

.xsi-section-label {
  color: var(--xsi-ink-muted);
  margin-block-end: var(--xsi-space-4);
  display: block;
}

.xsi-section-title {
  font-family: var(--xsi-font-heading);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--xsi-ink);
  margin-block-end: var(--xsi-space-6);
}

.xsi-link-arrow {
  display: inline-flex;
  align-items: center;
  gap: var(--xsi-space-2);
  color: var(--xsi-accent);
  font-weight: 500;
  font-size: 0.9rem;
  transition: gap var(--xsi-transition);
}
.xsi-link-arrow:hover { gap: var(--xsi-space-4); color: var(--xsi-accent-dark); }

.xsi-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--xsi-space-2);
  font-family: var(--xsi-font-heading);
  font-weight: 600;
  border-radius: var(--xsi-radius-sm);
  cursor: pointer;
  transition: all var(--xsi-transition);
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}
.xsi-btn--sm { padding: var(--xsi-space-2) var(--xsi-space-4); font-size: 0.85rem; }
.xsi-btn--md { padding: var(--xsi-space-3) var(--xsi-space-6); font-size: 0.95rem; }
.xsi-btn--lg { padding: var(--xsi-space-4) var(--xsi-space-8); font-size: 1rem; }
.xsi-btn--full { inline-size: 100%; justify-content: center; }

.xsi-btn--primary {
  background: var(--xsi-accent);
  color: var(--xsi-white);
  border-color: var(--xsi-accent);
}
.xsi-btn--primary:hover {
  background: var(--xsi-accent-dark);
  border-color: var(--xsi-accent-dark);
  transform: translateY(-1px);
  box-shadow: var(--xsi-shadow-md);
}

.xsi-btn--outline {
  background: transparent;
  color: var(--xsi-ink);
  border-color: var(--xsi-border-strong);
}
.xsi-btn--outline:hover {
  border-color: var(--xsi-ink);
  background: var(--xsi-ink);
  color: var(--xsi-white);
}

.xsi-btn--ghost {
  background: transparent;
  color: var(--xsi-ink-muted);
  border-color: transparent;
}
.xsi-btn--ghost:hover { color: var(--xsi-ink); background: var(--xsi-bg-concrete); }

.xsi-pulse-dot {
  display: inline-block;
  inline-size: 8px;
  block-size: 8px;
  border-radius: 50%;
  background: var(--xsi-white);
  animation: xsi-pulse 2s infinite;
  flex-shrink: 0;
}
@keyframes xsi-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.xsi-required { color: var(--xsi-accent); }

.xsi-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.xsi-reveal.xsi-revealed {
  opacity: 1;
  transform: translateY(0);
}

@layer layout {
  .xsi-nav {
    position: sticky;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: 100;
    background: var(--xsi-bg);
    border-block-end: 1px solid var(--xsi-border);
    block-size: var(--xsi-nav-h);
    transition: box-shadow var(--xsi-transition-slow);
  }

  .xsi-nav-inner {
    display: flex;
    align-items: center;
    gap: var(--xsi-space-8);
    block-size: 100%;
    inline-size: min(100%, 1200px);
    margin-inline: auto;
    padding-inline: var(--xsi-space-6);
  }

  .xsi-nav-logo {
    display: flex;
    align-items: center;
    gap: var(--xsi-space-3);
    flex-shrink: 0;
    text-decoration: none;
  }
  .xsi-nav-logo-img { block-size: 32px; inline-size: auto; }
  .xsi-nav-logo-text {
    font-family: var(--xsi-font-heading);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--xsi-ink);
    letter-spacing: -0.01em;
  }

  .xsi-nav-links {
    display: flex;
    align-items: center;
    gap: var(--xsi-space-1);
    margin-inline-start: auto;
  }

  .xsi-nav-link {
    font-family: var(--xsi-font-body);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--xsi-ink-mid);
    padding: var(--xsi-space-2) var(--xsi-space-3);
    border-radius: var(--xsi-radius-md);
    transition: all var(--xsi-transition);
    position: relative;
  }
  .xsi-nav-link::after {
    content: '';
    position: absolute;
    inset-block-end: 0;
    inset-inline-start: var(--xsi-space-3);
    inset-inline-end: var(--xsi-space-3);
    block-size: 2px;
    background: var(--xsi-accent);
    transform: scaleX(0);
    transition: transform var(--xsi-transition);
  }
  .xsi-nav-link:hover { color: var(--xsi-ink); }
  .xsi-nav-link:hover::after { transform: scaleX(1); }
  .xsi-nav-link--active { color: var(--xsi-ink); font-weight: 600; }
  .xsi-nav-link--active::after { transform: scaleX(1); }

  .xsi-nav-cta { margin-inline-start: var(--xsi-space-4); }

  .xsi-nav-hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--xsi-space-2);
    margin-inline-start: auto;
  }
  .xsi-nav-hamburger span {
    display: block;
    inline-size: 24px;
    block-size: 2px;
    background: var(--xsi-ink);
    transition: all var(--xsi-transition);
    border-radius: 1px;
  }

  .xsi-mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: var(--xsi-bg-dark);
    display: flex;
    flex-direction: column;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--xsi-transition-slow);
  }
  .xsi-mobile-menu.xsi-open {
    opacity: 1;
    pointer-events: all;
  }

  .xsi-mobile-menu-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--xsi-space-5) var(--xsi-space-6);
    border-block-end: 1px solid rgba(255,255,255,0.1);
  }

  .xsi-mobile-logo {
    font-family: var(--xsi-font-heading);
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--xsi-white);
  }

  .xsi-mobile-close {
    background: none;
    border: none;
    color: var(--xsi-white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--xsi-space-2);
    transition: color var(--xsi-transition);
  }
  .xsi-mobile-close:hover { color: var(--xsi-accent); }

  .xsi-mobile-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: rgba(255,255,255,0.05);
    flex: 1;
    padding: var(--xsi-space-8);
    gap: var(--xsi-space-4);
    align-content: center;
  }

  .xsi-mobile-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--xsi-space-3);
    padding: var(--xsi-space-8) var(--xsi-space-4);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--xsi-radius-lg);
    color: rgba(255,255,255,0.8);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all var(--xsi-transition);
    text-align: center;
    min-block-size: 44px;
  }
  .xsi-mobile-item i { font-size: 1.4rem; color: var(--xsi-accent-light); }
  .xsi-mobile-item:hover {
    background: rgba(255,255,255,0.08);
    color: var(--xsi-white);
    transform: translateY(-2px);
  }
  .xsi-mobile-item--active { color: var(--xsi-white); border-color: var(--xsi-accent); }
  .xsi-mobile-item--cta {
    background: var(--xsi-accent);
    border-color: var(--xsi-accent);
    color: var(--xsi-white);
  }
  .xsi-mobile-item--cta i { color: var(--xsi-white); }
  .xsi-mobile-item--cta:hover { background: var(--xsi-accent-dark); }

  .xsi-footer {
    background: var(--xsi-bg-dark);
    color: rgba(255,255,255,0.75);
    margin-block-start: auto;
  }

  .xsi-footer-inner {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--xsi-space-16);
    padding: var(--xsi-space-16) var(--xsi-space-6);
    inline-size: min(100%, 1200px);
    margin-inline: auto;
  }

  .xsi-footer-logo { block-size: 36px; inline-size: auto; margin-block-end: var(--xsi-space-4); filter: brightness(10); }
  .xsi-footer-tagline { font-size: 0.9rem; margin-block-end: var(--xsi-space-6); color: rgba(255,255,255,0.6); }
  .xsi-footer-address { font-size: 0.875rem; line-height: 1.8; color: rgba(255,255,255,0.55); }
  .xsi-footer-address a { color: rgba(255,255,255,0.55); transition: color var(--xsi-transition); }
  .xsi-footer-address a:hover { color: var(--xsi-accent-light); }

  .xsi-footer-sitemap { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--xsi-space-8); }
  .xsi-footer-col-title { color: rgba(255,255,255,0.4); margin-block-end: var(--xsi-space-4); display: block; }
  .xsi-footer-col ul { display: flex; flex-direction: column; gap: var(--xsi-space-3); }
  .xsi-footer-col a { font-size: 0.875rem; color: rgba(255,255,255,0.6); transition: color var(--xsi-transition); }
  .xsi-footer-col a:hover { color: var(--xsi-white); }

  .xsi-footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--xsi-space-5) var(--xsi-space-6);
    border-block-start: 1px solid rgba(255,255,255,0.08);
    inline-size: min(100%, 1200px);
    margin-inline: auto;
    color: rgba(255,255,255,0.35);
    font-size: 0.72rem;
    flex-wrap: wrap;
    gap: var(--xsi-space-4);
  }

  .xsi-footer-legal-links { display: flex; gap: var(--xsi-space-6); }
  .xsi-footer-legal-links a { color: rgba(255,255,255,0.35); transition: color var(--xsi-transition); }
  .xsi-footer-legal-links a:hover { color: rgba(255,255,255,0.7); }
}

@layer components {

  .xsi-hero {
    min-block-size: calc(100vh - var(--xsi-nav-h));
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
    overflow: hidden;
    background: var(--xsi-bg);
  }

  .xsi-hero-grid-lines {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    pointer-events: none;
    z-index: 0;
  }
  .xsi-hero-grid-lines span {
    border-inline-start: 1px solid var(--xsi-border);
    opacity: 0.5;
  }
  .xsi-hero-grid-lines span:first-child { border-inline-start: none; }

  .xsi-hero-inner {
    padding: var(--xsi-space-20) var(--xsi-space-16) var(--xsi-space-20) var(--xsi-space-12);
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    z-index: 1;
  }

  .xsi-hero-label {
    display: flex;
    align-items: center;
    gap: var(--xsi-space-4);
    margin-block-end: var(--xsi-space-8);
    color: var(--xsi-ink-muted);
  }
  .xsi-hero-label-dot {
    inline-size: 4px;
    block-size: 4px;
    border-radius: 50%;
    background: var(--xsi-accent);
    flex-shrink: 0;
  }

  .xsi-hero-title {
    font-family: var(--xsi-font-heading);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    color: var(--xsi-ink);
    margin-block-end: var(--xsi-space-6);
    letter-spacing: -0.02em;
  }
  .xsi-hero-title em {
    font-style: normal;
    color: var(--xsi-accent);
    position: relative;
  }
  .xsi-hero-title em::after {
    content: '';
    position: absolute;
    inset-block-end: -4px;
    inset-inline-start: 0;
    inline-size: 100%;
    block-size: 3px;
    background: var(--xsi-accent);
    opacity: 0.3;
  }

  .xsi-hero-sub {
    font-size: clamp(1rem, 1.5vw, 1.15rem);
    color: var(--xsi-ink-mid);
    max-inline-size: 480px;
    line-height: 1.7;
    margin-block-end: var(--xsi-space-10);
  }

  .xsi-hero-actions {
    display: flex;
    align-items: center;
    gap: var(--xsi-space-4);
    margin-block-end: var(--xsi-space-12);
    flex-wrap: wrap;
  }

  .xsi-hero-pillars {
    display: flex;
    gap: var(--xsi-space-6);
    flex-wrap: wrap;
  }
  .xsi-hero-pillar {
    display: flex;
    align-items: center;
    gap: var(--xsi-space-2);
    font-size: 0.85rem;
    color: var(--xsi-ink-mid);
    font-weight: 500;
  }
  .xsi-hero-pillar .xsi-mono { font-size: 0.65rem; }

  .xsi-hero-visual {
    position: relative;
    overflow: hidden;
    background: var(--xsi-bg-concrete);
  }
  .xsi-hero-img-wrap { block-size: 100%; position: relative; }
  .xsi-hero-img { block-size: 100%; inline-size: 100%; object-fit: cover; }
  .xsi-hero-img-badge {
    position: absolute;
    inset-block-end: var(--xsi-space-8);
    inset-inline-start: var(--xsi-space-8);
    background: var(--xsi-bg);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-4) var(--xsi-space-5);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-1);
    box-shadow: var(--xsi-shadow-lg);
  }
  .xsi-hero-img-badge .xsi-mono { color: var(--xsi-accent); font-size: 0.65rem; }
  .xsi-hero-img-badge span:last-child { font-weight: 600; font-size: 0.9rem; }

  .xsi-intro {
    background: var(--xsi-bg-dark);
    padding-block: var(--xsi-space-20);
  }
  .xsi-intro-inner {
    max-inline-size: 720px;
    margin-inline: auto;
  }
  .xsi-intro .xsi-mono { color: rgba(255,255,255,0.4); margin-block-end: var(--xsi-space-5); display: block; }
  .xsi-intro .xsi-section-title { color: var(--xsi-white); }
  .xsi-intro-body { display: flex; flex-direction: column; gap: var(--xsi-space-5); margin-block-end: var(--xsi-space-8); }
  .xsi-intro-body p { color: rgba(255,255,255,0.7); font-size: 1.05rem; line-height: 1.75; }
  .xsi-intro .xsi-link-arrow { color: var(--xsi-accent-light); }
  .xsi-intro .xsi-link-arrow:hover { color: var(--xsi-white); }

  .xsi-sticky-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-block-size: 100vh;
    background: var(--xsi-bg-alt);
  }

  .xsi-sticky-visual {
    position: sticky;
    inset-block-start: var(--xsi-nav-h);
    block-size: calc(100vh - var(--xsi-nav-h));
    overflow: hidden;
    border-inline-end: 1px solid var(--xsi-border);
  }
  .xsi-sticky-img { block-size: 100%; inline-size: 100%; object-fit: cover; }
  .xsi-sticky-visual-label {
    position: absolute;
    inset-block-start: var(--xsi-space-8);
    inset-inline-start: var(--xsi-space-8);
    background: var(--xsi-accent);
    color: var(--xsi-white);
    padding: var(--xsi-space-2) var(--xsi-space-4);
    font-size: 0.65rem;
  }

  .xsi-sticky-content {
    padding: var(--xsi-space-20) var(--xsi-space-12);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-20);
  }

  .xsi-sticky-block {
    border-inline-start: 2px solid var(--xsi-border);
    padding-inline-start: var(--xsi-space-8);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-4);
  }
  .xsi-sticky-block .xsi-mono { margin-block-end: var(--xsi-space-1); }
  .xsi-sticky-heading {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    font-weight: 700;
    color: var(--xsi-ink);
    line-height: 1.2;
  }
  .xsi-sticky-block p { color: var(--xsi-ink-mid); line-height: 1.7; }

  .xsi-about-preview {
    padding-block: var(--xsi-space-24);
    background: var(--xsi-bg);
    border-block-start: 1px solid var(--xsi-border);
  }
  .xsi-about-preview-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--xsi-space-16);
    align-items: center;
  }
  .xsi-about-preview-text { display: flex; flex-direction: column; gap: var(--xsi-space-5); }
  .xsi-about-preview-text .xsi-section-title { margin-block-end: 0; }
  .xsi-about-preview-text p { color: var(--xsi-ink-mid); line-height: 1.75; }
  .xsi-about-preview-img { position: relative; }
  .xsi-about-img {
    inline-size: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: var(--xsi-radius-md);
    box-shadow: var(--xsi-shadow-xl);
  }
  .xsi-about-tag {
    position: absolute;
    inset-block-end: -12px;
    inset-inline-end: -12px;
    background: var(--xsi-accent);
    color: var(--xsi-white);
    padding: var(--xsi-space-2) var(--xsi-space-4);
    font-size: 0.65rem;
    box-shadow: var(--xsi-shadow-md);
  }

  .xsi-pillars {
    padding-block: var(--xsi-space-24);
    background: var(--xsi-bg-concrete);
    border-block: 1px solid var(--xsi-border);
  }
  .xsi-pillars-header {
    margin-block-end: var(--xsi-space-12);
  }
  .xsi-pillars-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--xsi-border);
    border: 1px solid var(--xsi-border);
  }
  .xsi-pillar-card {
    background: var(--xsi-bg);
    padding: var(--xsi-space-8);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-3);
    transition: background var(--xsi-transition);
  }
  .xsi-pillar-card:hover { background: var(--xsi-bg-yellow); }
  .xsi-pillar-icon { font-size: 1.5rem; color: var(--xsi-accent); margin-block-end: var(--xsi-space-2); }
  .xsi-pillar-num { color: var(--xsi-ink-faint); }
  .xsi-pillar-title {
    font-family: var(--xsi-font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--xsi-ink);
  }
  .xsi-pillar-card p { font-size: 0.875rem; color: var(--xsi-ink-mid); line-height: 1.65; }

  .xsi-who-section {
    padding-block: var(--xsi-space-24);
    background: var(--xsi-bg);
  }
  .xsi-who-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--xsi-space-16);
    align-items: center;
  }
  .xsi-who-img { inline-size: 100%; aspect-ratio: 3/4; object-fit: cover; border-radius: var(--xsi-radius-md); }
  .xsi-who-text { display: flex; flex-direction: column; gap: var(--xsi-space-5); }
  .xsi-who-text .xsi-section-title { margin-block-end: 0; }
  .xsi-who-text p { color: var(--xsi-ink-mid); line-height: 1.75; }

  .xsi-contact-preview {
    padding-block: var(--xsi-space-24);
    background: var(--xsi-bg-alt);
    border-block-start: 1px solid var(--xsi-border);
  }
  .xsi-contact-preview-header { margin-block-end: var(--xsi-space-12); }
  .xsi-contact-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--xsi-space-4);
    margin-block-end: var(--xsi-space-12);
  }
  .xsi-contact-card {
    background: var(--xsi-bg);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-6);
    display: flex;
    gap: var(--xsi-space-4);
    align-items: flex-start;
    transition: box-shadow var(--xsi-transition), transform var(--xsi-transition);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-contact-card:hover { box-shadow: var(--xsi-shadow-md); transform: translateY(-2px); }
  .xsi-contact-card-icon {
    inline-size: 40px;
    block-size: 40px;
    background: var(--xsi-bg-yellow);
    border-radius: var(--xsi-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--xsi-accent);
    font-size: 1rem;
    flex-shrink: 0;
  }
  .xsi-contact-label { color: var(--xsi-ink-muted); margin-block-end: var(--xsi-space-1); display: block; }
  .xsi-contact-card-body p { font-size: 0.9rem; color: var(--xsi-ink-mid); line-height: 1.5; }
  .xsi-contact-card-body a { color: var(--xsi-accent); }
  .xsi-contact-card-body a:hover { color: var(--xsi-accent-dark); }
  .xsi-contact-preview-cta { text-align: center; }

  .xsi-page-header {
    padding-block: var(--xsi-space-20);
    background: var(--xsi-bg-dark);
    position: relative;
    overflow: hidden;
  }
  .xsi-page-header::before {
    content: '';
    position: absolute;
    inset-inline-end: 0;
    inset-block-start: 0;
    inset-block-end: 0;
    inline-size: 30%;
    background: linear-gradient(90deg, transparent, rgba(193,127,62,0.08));
    pointer-events: none;
  }
  .xsi-page-header-inner { position: relative; z-index: 1; }
  .xsi-page-label { color: rgba(255,255,255,0.4); margin-block-end: var(--xsi-space-5); display: block; }
  .xsi-page-title {
    font-family: var(--xsi-font-heading);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--xsi-white);
    margin-block-end: var(--xsi-space-6);
    letter-spacing: -0.02em;
  }
  .xsi-page-intro { font-size: 1.1rem; color: rgba(255,255,255,0.6); max-inline-size: 560px; line-height: 1.7; }

  .xsi-perspective-hero-img {
    padding-block: var(--xsi-space-10);
    background: var(--xsi-bg);
  }
  .xsi-perspective-img-wrap {
    border: 1px solid var(--xsi-border);
    overflow: hidden;
    border-radius: var(--xsi-radius-md);
  }
  .xsi-perspective-img {
    inline-size: 100%;
    aspect-ratio: 21/7;
    object-fit: cover;
    object-position: center 30%;
    display: block;
  }

  .xsi-perspective-body { padding-block: var(--xsi-space-16) var(--xsi-space-24); }
  .xsi-perspective-layout {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: var(--xsi-space-16);
    align-items: start;
  }

  .xsi-perspective-content { display: flex; flex-direction: column; gap: var(--xsi-space-12); }
  .xsi-prose-block { display: flex; flex-direction: column; gap: var(--xsi-space-5); }
  .xsi-prose-heading {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.3rem, 2.5vw, 1.75rem);
    font-weight: 700;
    color: var(--xsi-ink);
    line-height: 1.2;
  }
  .xsi-prose-block p { color: var(--xsi-ink-mid); line-height: 1.8; font-size: 1.025rem; }

  .xsi-pull-quote {
    border-inline-start: 3px solid var(--xsi-accent);
    padding: var(--xsi-space-5) var(--xsi-space-8);
    background: var(--xsi-bg-yellow);
    border-radius: 0 var(--xsi-radius-md) var(--xsi-radius-md) 0;
  }
  .xsi-pull-quote blockquote {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.1rem, 2vw, 1.4rem);
    font-weight: 600;
    color: var(--xsi-ink);
    line-height: 1.4;
    font-style: italic;
  }

  .xsi-highlight-box {
    background: var(--xsi-bg-concrete);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-8);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-4);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-highlight-box p { color: var(--xsi-ink-mid); line-height: 1.7; }

  .xsi-perspective-aside { position: sticky; inset-block-start: calc(var(--xsi-nav-h) + 24px); display: flex; flex-direction: column; gap: var(--xsi-space-6); }
  .xsi-aside-card {
    background: var(--xsi-bg-dark);
    padding: var(--xsi-space-6);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-4);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-aside-card .xsi-mono { color: rgba(255,255,255,0.4); }
  .xsi-aside-links { display: flex; flex-direction: column; gap: var(--xsi-space-1); }
  .xsi-aside-link {
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
    padding: var(--xsi-space-2) var(--xsi-space-3);
    border-radius: var(--xsi-radius-sm);
    transition: all var(--xsi-transition);
    display: block;
  }
  .xsi-aside-link:hover { background: rgba(255,255,255,0.06); color: var(--xsi-white); }
  .xsi-aside-cta-card {
    background: var(--xsi-bg-yellow);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-6);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-4);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-aside-cta-card p { font-size: 0.875rem; color: var(--xsi-ink-mid); line-height: 1.6; }

  .xsi-hiw-overview {
    padding-block: var(--xsi-space-16);
    background: var(--xsi-bg-alt);
    border-block-end: 1px solid var(--xsi-border);
  }
  .xsi-hiw-overview-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: var(--xsi-border);
    border: 1px solid var(--xsi-border);
  }
  .xsi-hiw-stat-card {
    background: var(--xsi-bg);
    padding: var(--xsi-space-8);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-3);
  }
  .xsi-hiw-stat-icon { font-size: 1.5rem; color: var(--xsi-accent); }
  .xsi-hiw-stat-value {
    font-family: var(--xsi-font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--xsi-ink);
  }
  .xsi-hiw-stat-card p { font-size: 0.85rem; color: var(--xsi-ink-muted); line-height: 1.6; }

  .xsi-hiw-phases { padding-block: var(--xsi-space-20) var(--xsi-space-24); }
  .xsi-hiw-phases-header { margin-block-end: var(--xsi-space-12); }

  .xsi-phase-block {
    display: grid;
    grid-template-columns: 160px 1fr 360px;
    gap: var(--xsi-space-10);
    padding-block: var(--xsi-space-12);
    border-block-start: 1px solid var(--xsi-border);
    align-items: start;
  }
  .xsi-phase-block--alt { background: var(--xsi-bg-alt); margin-inline: calc(var(--xsi-space-6) * -1); padding-inline: var(--xsi-space-6); }

  .xsi-phase-label { display: flex; flex-direction: column; gap: var(--xsi-space-2); padding-block-start: var(--xsi-space-2); }
  .xsi-phase-num { color: var(--xsi-accent); font-size: 0.65rem; }
  .xsi-phase-weeks { color: var(--xsi-ink-muted); font-size: 0.65rem; }

  .xsi-phase-title {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.2rem, 2vw, 1.5rem);
    font-weight: 700;
    color: var(--xsi-ink);
    margin-block-end: var(--xsi-space-5);
    line-height: 1.2;
  }
  .xsi-phase-body { display: flex; flex-direction: column; gap: var(--xsi-space-4); margin-block-end: var(--xsi-space-6); }
  .xsi-phase-body p { color: var(--xsi-ink-mid); line-height: 1.75; }
  .xsi-phase-skills { display: flex; flex-direction: column; gap: var(--xsi-space-3); }
  .xsi-phase-skill-tags { display: flex; flex-wrap: wrap; gap: var(--xsi-space-2); }
  .xsi-phase-skill-tags span {
    background: var(--xsi-bg-concrete);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-1) var(--xsi-space-3);
    font-size: 0.8rem;
    color: var(--xsi-ink-mid);
    border-radius: var(--xsi-radius-sm);
  }

  .xsi-phase-visual { border-radius: var(--xsi-radius-md); overflow: hidden; }
  .xsi-phase-img { inline-size: 100%; aspect-ratio: 4/3; object-fit: cover; }

  .xsi-hiw-cta {
    background: var(--xsi-bg-yellow);
    padding-block: var(--xsi-space-20);
    border-block-start: 1px solid var(--xsi-border);
    text-align: center;
  }
  .xsi-hiw-cta-inner { display: flex; flex-direction: column; align-items: center; gap: var(--xsi-space-5); }
  .xsi-hiw-cta-inner .xsi-section-title { margin-block-end: 0; }
  .xsi-hiw-cta-inner p { color: var(--xsi-ink-mid); max-inline-size: 500px; }
  .xsi-hiw-cta-actions { display: flex; gap: var(--xsi-space-4); flex-wrap: wrap; justify-content: center; }

  .xsi-method-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 0;
    align-items: start;
    inline-size: min(100%, 1200px);
    margin-inline: auto;
    padding-inline: var(--xsi-space-6);
    padding-block: var(--xsi-space-16) var(--xsi-space-24);
  }

  .xsi-toc {
    position: sticky;
    inset-block-start: calc(var(--xsi-nav-h) + 24px);
  }
  .xsi-toc-inner {
    background: var(--xsi-bg-alt);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-6);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-toc-title { color: var(--xsi-ink-muted); margin-block-end: var(--xsi-space-4); display: block; }
  .xsi-toc-nav { display: flex; flex-direction: column; gap: var(--xsi-space-1); }
  .xsi-toc-link {
    display: block;
    font-size: 0.875rem;
    color: var(--xsi-ink-mid);
    padding: var(--xsi-space-2) var(--xsi-space-3);
    border-radius: var(--xsi-radius-sm);
    border-inline-start: 2px solid transparent;
    transition: all var(--xsi-transition);
  }
  .xsi-toc-link:hover { color: var(--xsi-ink); background: var(--xsi-bg-concrete); }
  .xsi-toc-link.xsi-toc-active {
    color: var(--xsi-accent);
    border-inline-start-color: var(--xsi-accent);
    background: var(--xsi-bg-yellow);
    font-weight: 500;
  }

  .xsi-method-content { padding-inline-start: var(--xsi-space-12); }
  .xsi-method-section { padding-block: var(--xsi-space-12); border-block-start: 1px solid var(--xsi-border); }
  .xsi-method-section:first-child { border-block-start: none; padding-block-start: 0; }
  .xsi-method-section-header { margin-block-end: var(--xsi-space-6); }
  .xsi-method-heading {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--xsi-ink);
    margin-block-start: var(--xsi-space-2);
    line-height: 1.15;
  }
  .xsi-method-body { display: flex; flex-direction: column; gap: var(--xsi-space-6); }
  .xsi-method-body p { color: var(--xsi-ink-mid); line-height: 1.8; font-size: 1.025rem; }

  .xsi-method-callout {
    display: flex;
    gap: var(--xsi-space-5);
    background: var(--xsi-bg-yellow);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-6);
    border-radius: var(--xsi-radius-md);
    align-items: flex-start;
  }
  .xsi-method-callout-icon { color: var(--xsi-accent); font-size: 1.25rem; flex-shrink: 0; margin-block-start: 2px; }
  .xsi-method-callout strong { display: block; margin-block-end: var(--xsi-space-2); color: var(--xsi-ink); }
  .xsi-method-callout div { font-size: 0.9rem; color: var(--xsi-ink-mid); line-height: 1.7; }

  .xsi-principles-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--xsi-space-6);
  }
  .xsi-principle-item {
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-3);
    padding: var(--xsi-space-6);
    background: var(--xsi-bg-alt);
    border: 1px solid var(--xsi-border);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-principle-icon { font-size: 1.25rem; color: var(--xsi-accent); }
  .xsi-principle-item h4 {
    font-family: var(--xsi-font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--xsi-ink);
  }
  .xsi-principle-item p { font-size: 0.875rem; color: var(--xsi-ink-mid); line-height: 1.65; }

  .xsi-method-cta-block {
    background: var(--xsi-bg-dark);
    padding: var(--xsi-space-8);
    border-radius: var(--xsi-radius-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--xsi-space-8);
    flex-wrap: wrap;
  }
  .xsi-method-cta-block p { color: rgba(255,255,255,0.7); max-inline-size: 420px; line-height: 1.65; }

  .xsi-contact-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-block-size: 600px;
  }
  .xsi-contact-map { position: relative; background: var(--xsi-bg-concrete); min-block-size: 400px; }
  .xsi-contact-map iframe { position: absolute; inset: 0; inline-size: 100%; block-size: 100%; }

  .xsi-contact-form-col {
    padding: var(--xsi-space-12) var(--xsi-space-10);
    background: var(--xsi-bg);
    border-inline-start: 1px solid var(--xsi-border);
  }
  .xsi-contact-form-header { margin-block-end: var(--xsi-space-8); }
  .xsi-contact-form-title {
    font-family: var(--xsi-font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--xsi-ink);
    margin-block-start: var(--xsi-space-2);
  }

  .xsi-form { display: flex; flex-direction: column; gap: var(--xsi-space-5); }
  .xsi-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--xsi-space-5); }
  .xsi-form-group { display: flex; flex-direction: column; gap: var(--xsi-space-2); }
  .xsi-form-label { font-size: 0.875rem; font-weight: 500; color: var(--xsi-ink-mid); }
  .xsi-form-input {
    font-family: var(--xsi-font-body);
    font-size: 0.95rem;
    color: var(--xsi-ink);
    background: var(--xsi-bg);
    border: 1px solid var(--xsi-border);
    border-radius: var(--xsi-radius-sm);
    padding: var(--xsi-space-3) var(--xsi-space-4);
    transition: border-color var(--xsi-transition), box-shadow var(--xsi-transition);
    inline-size: 100%;
    min-block-size: 44px;
    appearance: none;
  }
  .xsi-form-input:focus {
    outline: none;
    border-color: var(--xsi-accent);
    box-shadow: 0 0 0 3px rgba(193,127,62,0.12);
  }
  .xsi-form-textarea { min-block-size: 120px; resize: vertical; line-height: 1.6; }

  .xsi-form-check { flex-direction: row; align-items: flex-start; gap: var(--xsi-space-3); }
  .xsi-check-label {
    display: flex;
    align-items: flex-start;
    gap: var(--xsi-space-3);
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--xsi-ink-mid);
    line-height: 1.5;
  }
  .xsi-check-label input[type="checkbox"] { display: none; }
  .xsi-check-custom {
    inline-size: 20px;
    block-size: 20px;
    border: 2px solid var(--xsi-border-strong);
    border-radius: var(--xsi-radius-sm);
    flex-shrink: 0;
    margin-block-start: 2px;
    transition: all var(--xsi-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--xsi-bg);
  }
  .xsi-check-label input[type="checkbox"]:checked + .xsi-check-custom {
    background: var(--xsi-accent);
    border-color: var(--xsi-accent);
  }
  .xsi-check-label input[type="checkbox"]:checked + .xsi-check-custom::after {
    content: '';
    inline-size: 10px;
    block-size: 6px;
    border-inline-start: 2px solid white;
    border-block-end: 2px solid white;
    transform: rotate(-45deg) translateY(-1px);
  }
  .xsi-check-label a { color: var(--xsi-accent); text-decoration: underline; }

  .xsi-form-error {
    color: #c0392b;
    font-size: 0.875rem;
    min-block-size: 0;
    transition: all var(--xsi-transition);
  }

  .xsi-newsletter-section {
    padding-block: var(--xsi-space-16);
    background: var(--xsi-bg-dark);
  }
  .xsi-newsletter-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--xsi-space-16);
    align-items: center;
  }
  .xsi-newsletter-title {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.25rem, 2vw, 1.6rem);
    font-weight: 700;
    color: var(--xsi-white);
    margin-block: var(--xsi-space-2) var(--xsi-space-3);
  }
  .xsi-newsletter-text .xsi-mono { color: rgba(255,255,255,0.4); }
  .xsi-newsletter-text p { color: rgba(255,255,255,0.6); font-size: 0.9rem; line-height: 1.65; }
  .xsi-newsletter-form { display: flex; flex-direction: column; gap: var(--xsi-space-4); }
  .xsi-newsletter-fields { display: flex; gap: var(--xsi-space-3); }
  .xsi-newsletter-fields .xsi-form-input { background: rgba(255,255,255,0.08); border-color: rgba(255,255,255,0.15); color: var(--xsi-white); }
  .xsi-newsletter-fields .xsi-form-input::placeholder { color: rgba(255,255,255,0.35); }
  .xsi-newsletter-fields .xsi-form-input:focus { border-color: var(--xsi-accent); background: rgba(255,255,255,0.12); }
  .xsi-newsletter-note { color: rgba(255,255,255,0.35); font-size: 0.65rem; }

  .xsi-contact-info-strip {
    padding-block: var(--xsi-space-12);
    background: var(--xsi-bg-alt);
    border-block-start: 1px solid var(--xsi-border);
  }
  .xsi-contact-info-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--xsi-space-8); }
  .xsi-contact-info-item { display: flex; align-items: flex-start; gap: var(--xsi-space-4); }
  .xsi-contact-info-icon { font-size: 1.25rem; color: var(--xsi-accent); margin-block-start: 3px; flex-shrink: 0; }
  .xsi-contact-info-item .xsi-contact-label { color: var(--xsi-ink-muted); display: block; margin-block-end: var(--xsi-space-1); }
  .xsi-contact-info-item p { color: var(--xsi-ink-mid); font-size: 0.9rem; }
  .xsi-contact-info-item a { color: var(--xsi-accent); }
  .xsi-contact-info-item a:hover { color: var(--xsi-accent-dark); }

  .xsi-thanks-page { background: var(--xsi-bg-concrete); }
  .xsi-thanks-main {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-block: var(--xsi-space-20);
    min-block-size: calc(100vh - var(--xsi-nav-h) - 300px);
    position: relative;
  }
  .xsi-thanks-bg {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
      0deg,
      transparent,
      transparent 39px,
      var(--xsi-border) 39px,
      var(--xsi-border) 40px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 39px,
      var(--xsi-border) 39px,
      var(--xsi-border) 40px
    );
    opacity: 0.4;
    pointer-events: none;
  }
  .xsi-thanks-card {
    position: relative;
    z-index: 1;
    background: var(--xsi-white);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-12) var(--xsi-space-16);
    max-inline-size: 560px;
    inline-size: 100%;
    margin-inline: var(--xsi-space-6);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--xsi-space-5);
    box-shadow: var(--xsi-shadow-xl);
    border-radius: var(--xsi-radius-lg);
  }
  .xsi-thanks-icon {
    inline-size: 64px;
    block-size: 64px;
    background: var(--xsi-bg-yellow);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--xsi-accent);
    border: 2px solid var(--xsi-accent);
  }
  .xsi-thanks-label { color: var(--xsi-ink-muted); }
  .xsi-thanks-title {
    font-family: var(--xsi-font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--xsi-ink);
    line-height: 1.2;
  }
  .xsi-thanks-text { color: var(--xsi-ink-mid); line-height: 1.7; max-inline-size: 400px; }
  .xsi-thanks-contact { display: flex; flex-direction: column; gap: var(--xsi-space-3); inline-size: 100%; }
  .xsi-thanks-contact-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--xsi-space-3);
    font-size: 0.9rem;
    color: var(--xsi-ink-mid);
    padding: var(--xsi-space-3);
    background: var(--xsi-bg-alt);
    border-radius: var(--xsi-radius-md);
    transition: background var(--xsi-transition);
  }
  .xsi-thanks-contact-item:hover { background: var(--xsi-bg-concrete); }
  .xsi-thanks-contact-item i { color: var(--xsi-accent); }

  .xsi-legal-body { padding-block: var(--xsi-space-16) var(--xsi-space-24); }
  .xsi-legal-content { max-inline-size: 800px; }
  .xsi-legal-intro { font-size: 1.05rem; color: var(--xsi-ink-mid); line-height: 1.8; margin-block-end: var(--xsi-space-10); }
  .xsi-legal-h2 {
    font-family: var(--xsi-font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--xsi-ink);
    margin-block: var(--xsi-space-10) var(--xsi-space-4);
    padding-block-end: var(--xsi-space-3);
    border-block-end: 1px solid var(--xsi-border);
  }
  .xsi-legal-h3 {
    font-family: var(--xsi-font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--xsi-ink);
    margin-block: var(--xsi-space-6) var(--xsi-space-3);
  }
  .xsi-legal-content p { color: var(--xsi-ink-mid); line-height: 1.8; margin-block-end: var(--xsi-space-4); }
  .xsi-legal-content a { color: var(--xsi-accent); text-decoration: underline; }
  .xsi-legal-content a:hover { color: var(--xsi-accent-dark); }

  .xsi-legal-term-aside {
    background: var(--xsi-bg-yellow);
    border-inline-start: 3px solid var(--xsi-accent);
    padding: var(--xsi-space-5) var(--xsi-space-6);
    margin-block: var(--xsi-space-6);
    border-radius: 0 var(--xsi-radius-md) var(--xsi-radius-md) 0;
  }
  .xsi-legal-term {
    display: block;
    font-size: 0.8rem;
    color: var(--xsi-accent-dark);
    margin-block-end: var(--xsi-space-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--xsi-font-mono);
  }
  .xsi-legal-term-aside p { color: var(--xsi-ink); font-size: 0.9rem; margin-block-end: 0; }

  .xsi-legal-address {
    background: var(--xsi-bg-alt);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-6);
    margin-block-start: var(--xsi-space-4);
    font-size: 0.9rem;
    line-height: 2;
    border-radius: var(--xsi-radius-md);
  }
  .xsi-legal-address a { color: var(--xsi-accent); text-decoration: underline; }

  .xsi-terms-clause {
    margin-block: var(--xsi-space-8);
    padding-block-start: var(--xsi-space-8);
    border-block-start: 1px solid var(--xsi-border);
  }
  .xsi-terms-clause-label { color: var(--xsi-ink-muted); margin-block-end: var(--xsi-space-3); display: block; }
  .xsi-terms-clause .xsi-legal-h2 { margin-block-start: 0; border-block-end: none; padding-block-end: 0; }

  .xsi-cookie-explainer-box {
    background: var(--xsi-bg-alt);
    border: 1px solid var(--xsi-border);
    padding: var(--xsi-space-8);
    margin-block: var(--xsi-space-8);
    display: flex;
    flex-direction: column;
    gap: var(--xsi-space-4);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-cookie-explainer-box p { color: var(--xsi-ink-mid); font-size: 0.9rem; line-height: 1.7; margin-block-end: 0; }

  .xsi-cookie-table-section { margin-block: var(--xsi-space-8); }
  .xsi-cookie-detail-card {
    border: 1px solid var(--xsi-border);
    border-radius: var(--xsi-radius-md);
    overflow: hidden;
    margin-block-start: var(--xsi-space-5);
  }
  .xsi-cookie-detail-row {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--xsi-space-4);
    padding: var(--xsi-space-3) var(--xsi-space-5);
    border-block-end: 1px solid var(--xsi-border);
    background: var(--xsi-bg-concrete);
    font-size: 0.8rem;
    color: var(--xsi-ink-muted);
  }
  .xsi-cookie-detail-row:last-child { border-block-end: none; }
  .xsi-cookie-detail-data {
    background: var(--xsi-bg);
    color: var(--xsi-ink-mid);
  }
  .xsi-cookie-detail-data span { font-size: 0.85rem; }

  .xsi-cookie-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26,24,20,0.65);
    z-index: 900;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--xsi-transition-slow);
    backdrop-filter: blur(2px);
  }
  .xsi-cookie-overlay.xsi-active { opacity: 1; pointer-events: all; }

  .xsi-cookie-modal {
    position: fixed;
    inset-inline-start: 50%;
    inset-block-start: 50%;
    transform: translate(-50%, -50%) scale(0.95);
    z-index: 901;
    background: var(--xsi-white);
    border: 1px solid var(--xsi-border);
    border-radius: var(--xsi-radius-lg);
    inline-size: min(520px, calc(100vw - 32px));
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--xsi-transition-slow), transform var(--xsi-transition-slow);
    box-shadow: var(--xsi-shadow-xl), 0 32px 64px rgba(26,24,20,0.2);
    overflow: hidden;
  }
  .xsi-cookie-modal.xsi-active {
    opacity: 1;
    pointer-events: all;
    max-height: 90%;
    overflow-y: auto;
    transform: translate(-50%, -50%) scale(1);
  }

  .xsi-cookie-header {
    padding: var(--xsi-space-6) var(--xsi-space-8) var(--xsi-space-5);
    border-block-end: 1px solid var(--xsi-border);
    background: var(--xsi-bg-dark);
    color: var(--xsi-white);
  }
  .xsi-cookie-logo {
    font-family: var(--xsi-font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
    display: block;
    margin-block-end: var(--xsi-space-3);
  }
  .xsi-cookie-title {
    font-family: var(--xsi-font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--xsi-white);
    margin-block-end: var(--xsi-space-2);
  }
  .xsi-cookie-desc { font-size: 0.875rem; color: rgba(255,255,255,0.6); line-height: 1.6; }

  .xsi-cookie-categories { padding: var(--xsi-space-5) var(--xsi-space-8); display: flex; flex-direction: column; gap: var(--xsi-space-4); }
  .xsi-cookie-cat {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--xsi-space-4);
    padding: var(--xsi-space-4);
    background: var(--xsi-bg-alt);
    border: 1px solid var(--xsi-border);
    border-radius: var(--xsi-radius-md);
  }
  .xsi-cookie-cat-info { display: flex; flex-direction: column; gap: var(--xsi-space-1); }
  .xsi-cookie-cat-info strong { font-size: 0.9rem; color: var(--xsi-ink); }
  .xsi-cookie-cat-info span { font-size: 0.8rem; color: var(--xsi-ink-muted); }

  .xsi-toggle { position: relative; display: inline-flex; cursor: pointer; flex-shrink: 0; }
  .xsi-toggle input { display: none; }
  .xsi-toggle-slider {
    inline-size: 44px;
    block-size: 24px;
    background: var(--xsi-border-strong);
    border-radius: 12px;
    transition: background var(--xsi-transition);
    position: relative;
  }
  .xsi-toggle-slider::after {
    content: '';
    position: absolute;
    inset-block-start: 3px;
    inset-inline-start: 3px;
    inline-size: 18px;
    block-size: 18px;
    background: white;
    border-radius: 50%;
    transition: transform var(--xsi-transition);
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  }
  .xsi-toggle input:checked + .xsi-toggle-slider { background: var(--xsi-accent); }
  .xsi-toggle input:checked + .xsi-toggle-slider::after { transform: translateX(20px); }
  .xsi-toggle--disabled { opacity: 0.5; cursor: not-allowed; }

  .xsi-cookie-actions {
    display: flex;
    gap: var(--xsi-space-3);
    padding: var(--xsi-space-5) var(--xsi-space-8) var(--xsi-space-8);
    justify-content: flex-end;
    flex-wrap: wrap;
    border-block-start: 1px solid var(--xsi-border);
  }
  .xsi-cookie-actions .xsi-btn { padding: var(--xsi-space-3) var(--xsi-space-5); font-size: 0.875rem; }
}

@layer utilities {
  @media (max-width: 1100px) {
    .xsi-hero { grid-template-columns: 1fr; min-block-size: auto; }
    .xsi-hero-visual { block-size: 40vh; display: block; }
    .xsi-hero-inner { padding: var(--xsi-space-12) var(--xsi-space-6); }
    .xsi-sticky-section { grid-template-columns: 1fr; }
    .xsi-sticky-visual { position: relative; inset-block-start: auto; block-size: 50vh; }
    .xsi-pillars-grid { grid-template-columns: 1fr 1fr; }
    .xsi-contact-cards { grid-template-columns: 1fr 1fr; }
    .xsi-hiw-overview-grid { grid-template-columns: 1fr 1fr; }
    .xsi-phase-block { grid-template-columns: 1fr; }
    .xsi-phase-visual { order: -1; }
    .xsi-method-layout { grid-template-columns: 1fr; padding-inline: var(--xsi-space-6); }
    .xsi-toc { position: static; }
    .xsi-method-content { padding-inline-start: 0; }
    .xsi-perspective-layout { grid-template-columns: 1fr; }
    .xsi-perspective-aside { position: static; }
    .xsi-about-preview-inner { grid-template-columns: 1fr; }
    .xsi-who-inner { grid-template-columns: 1fr; }
    .xsi-newsletter-inner { grid-template-columns: 1fr; gap: var(--xsi-space-8); }
    .xsi-footer-inner { grid-template-columns: 1fr; gap: var(--xsi-space-10); }
    .xsi-footer-sitemap { grid-template-columns: repeat(3, 1fr); }
    .xsi-contact-split { grid-template-columns: 1fr; }
    .xsi-contact-map { min-block-size: 300px; block-size: 300px; }
    .xsi-contact-info-grid { grid-template-columns: 1fr; gap: var(--xsi-space-6); }
    .xsi-principles-grid { grid-template-columns: 1fr; }
    .xsi-hiw-cta-actions { flex-direction: column; align-items: center; }
  }

  @media (max-width: 768px) {
    .xsi-nav-links { display: none; }
    .xsi-nav-cta { display: none; }
    .xsi-nav-hamburger { display: flex; }
    .xsi-pillars-grid { grid-template-columns: 1fr; }
    .xsi-contact-cards { grid-template-columns: 1fr; }
    .xsi-hiw-overview-grid { grid-template-columns: 1fr; }
    .xsi-form-row { grid-template-columns: 1fr; }
    .xsi-footer-sitemap { grid-template-columns: 1fr 1fr; }
    .xsi-footer-bottom { flex-direction: column; align-items: flex-start; }
    .xsi-newsletter-fields { flex-direction: column; }
    .xsi-sticky-content { padding: var(--xsi-space-10) var(--xsi-space-6); gap: var(--xsi-space-12); }
    .xsi-phase-block { padding-inline: 0; }
    .xsi-phase-block--alt { margin-inline: 0; padding-inline: 0; }
    .xsi-contact-form-col { padding: var(--xsi-space-8) var(--xsi-space-6); }
    .xsi-hero-pillars { gap: var(--xsi-space-4); }
    .xsi-hero-pillar { font-size: 0.8rem; }
    .xsi-thanks-card { padding: var(--xsi-space-8) var(--xsi-space-6); }
    .xsi-method-cta-block { flex-direction: column; }
    .xsi-cookie-actions { justify-content: stretch; }
    .xsi-cookie-actions .xsi-btn { flex: 1; justify-content: center; }
  }

  @media (max-width: 480px) {
    .xsi-footer-sitemap { grid-template-columns: 1fr; }
    .xsi-mobile-grid { grid-template-columns: 1fr 1fr; gap: var(--xsi-space-3); padding: var(--xsi-space-6); }
    .xsi-mobile-item { padding: var(--xsi-space-6) var(--xsi-space-3); }
    .xsi-hero-actions { flex-direction: column; align-items: flex-start; }
    .xsi-cookie-detail-row { grid-template-columns: 1fr; gap: var(--xsi-space-1); }
  }
}