/* ============================================
   CASE-STUDY.CSS — luison.io
   Shared styles for all case study pages
   Depends on: tokens.css, base.css, components.css
   ============================================ */

/* ══════════════════════════════════════════
   NAV — identical to landing, no section links
══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 68px;
  z-index: 100;
  border-bottom: var(--border-default) solid var(--color-border-default);
}
.nav-bg {
  position: absolute; inset: 0;
  background: var(--color-bg-page);
  opacity: 0.88;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: opacity 0.3s ease;
}
.nav.scrolled .nav-bg { opacity: 0.96; }

.nav-inner {
  position: relative; z-index: 1;
  height: 100%;
  padding: 0 var(--page-margin);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo { display: flex; align-items: center; flex-shrink: 0; }
.nav-logo-svg { height: 44px; width: 44px; display: block; }

/* Back link — sits after logo, same row */
.nav-back {
  font-family: var(--font-mono);
  font-size: var(--size-mono-sm);
  font-weight: 300;
  letter-spacing: 0.10em;
  color: var(--color-text-muted);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  transition: color 0.2s;
  margin-left: var(--space-6);
}
.nav-back:hover { color: var(--color-text-default); }
.nav-back svg { transition: transform 0.2s; flex-shrink: 0; }
.nav-back:hover svg { transform: translateX(-3px); }

/* Right side — toggle + divider + CTA */
.nav-items {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}
.nav-divider {
  width: 1px; height: 28px;
  background: var(--color-border-default);
  flex-shrink: 0;
}

/* Mobile actions — same as landing */
.nav-mobile-actions {
  display: none;
  align-items: center;
  gap: var(--space-4);
}
.nav-burger {
  background: none; border: none; cursor: pointer;
  color: var(--color-text-default);
  display: flex; align-items: center; justify-content: center;
  padding: 0; transition: color 0.2s;
}
.nav-burger:hover { color: var(--color-brand-blue); }

/* Mobile drawer */
.nav-drawer {
  position: absolute;
  top: 68px; left: 0; right: 0;
  background: var(--color-bg-page);
  border-bottom: var(--border-default) solid var(--color-border-default);
  padding: var(--space-8) var(--page-margin) var(--space-10);
  display: flex; flex-direction: column; gap: var(--space-8);
  opacity: 0; pointer-events: none;
  transform: translateY(-8px);
  transition: opacity 0.25s ease, transform 0.25s ease;
}
.nav-drawer.open { opacity: 1; pointer-events: auto; transform: translateY(0); }
.nav-drawer-cta  { align-self: flex-start; }

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
.cs-hero {
  min-height: 100vh;
  display: flex; flex-direction: column; justify-content: flex-end;
  padding: calc(68px + var(--section-lg)) var(--page-margin) var(--section-md);
  position: relative; overflow: hidden;
}
.cs-hero-bg   { position: absolute; inset: 0; pointer-events: none; }
.cs-hero-grid {
  position: absolute; inset: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(91,127,232,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(91,127,232,.035) 1px, transparent 1px);
  background-size: 48px 48px;
}
.cs-hero-content { position: relative; z-index: 1; }

.cs-hero-eyebrow {
  display: flex; align-items: center; gap: var(--space-3);
  margin-bottom: var(--space-6);
  font-family: var(--font-mono); font-weight: 300;
  font-size: var(--size-mono-sm); letter-spacing: 0.12em;
  color: var(--color-text-muted); text-transform: uppercase;
}
.cs-hero-eyebrow-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-brand-violet);
  animation: dot-pulse 2s ease-in-out infinite; flex-shrink: 0;
}
@keyframes dot-pulse {
  0%,100% { opacity:1; transform:scale(1); }
  50%      { opacity:.4; transform:scale(.7); }
}

.cs-hero-title {
  font-family: var(--font-display); font-weight: 300;
  font-size: var(--size-display); line-height: 1.05; letter-spacing: -0.02em;
  max-width: 920px; margin-bottom: var(--space-6);
  color: var(--color-text-default);
}
/* italic in hero title = gradient */
.cs-hero-title em {
  font-style: italic;
  background: var(--grad-brand-h);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.cs-hero-subtitle {
  font-size: var(--size-body-lg); line-height: var(--lh-relaxed);
  color: var(--color-text-muted); max-width: 640px;
  margin-bottom: var(--space-12);
}

/* ── Stats strip — 4 cells, always ── */
.cs-stats {
  display: grid; grid-template-columns: repeat(4,1fr);
  gap: 1px; background: var(--color-border-default);
  border: var(--border-default) solid var(--color-border-default);
  border-radius: var(--radius-panel); overflow: hidden; max-width: 900px;
}
.cs-stat { background: var(--color-bg-secondary); padding: var(--space-5) var(--space-6); }
.cs-stat-label {
  font-family: var(--font-mono); font-weight: 300;
  font-size: var(--size-mono-xs); letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-2);
}
/* All stat values — Fraunces display size */
.cs-stat-value {
  font-family: var(--font-display); font-weight: 300;
  font-size: var(--size-h2); line-height: 1.1;
  color: var(--color-text-default);
}
/* Gradient on key metrics */
.cs-stat-value.grad {
  background: var(--grad-brand-h);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}
.cs-stat-sub {
  font-size: var(--size-body-sm); color: var(--color-text-muted);
  margin-top: var(--space-1); line-height: 1.4;
}

/* ══════════════════════════════════════════
   SECTION SHELL
══════════════════════════════════════════ */
.cs-section { padding: var(--section-xl) var(--page-margin); }
.cs-section--alt { background: var(--color-bg-secondary); }

/* Section header — identical to landing */
.cs-section-header {
  display: flex; align-items: baseline; gap: 18px;
  border-bottom: var(--border-subtle) solid var(--color-border-default);
  padding-bottom: 22px; margin-bottom: var(--space-12);
}
.cs-section-num {
  font-family: var(--font-mono); font-size: var(--size-mono-sm);
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-text-placeholder); flex-shrink: 0;
}
.cs-section-title {
  font-family: var(--font-display); font-size: var(--size-h2);
  font-weight: 300; letter-spacing: -0.02em; color: var(--color-text-default);
}
/* italic in section title = gradient, same as landing */
.cs-section-title em {
  font-style: italic;
  background: var(--grad-brand-h);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

.cs-section-sub {
  font-size: var(--size-body-lg); color: var(--color-text-muted);
  line-height: var(--lh-relaxed); max-width: 760px;
  margin-bottom: var(--space-12); margin-top: var(--space-4);
}

/* Two-col: right col starts at top of content, not section-sub */
.cs-two-col > *,
.cs-two-col--wide > *,
.cs-two-col--narrow > * { align-self: start; }

/* ══════════════════════════════════════════
   LAYOUT HELPERS
══════════════════════════════════════════ */
.cs-two-col        { display:grid; grid-template-columns:1fr 1fr;    gap:var(--space-16); align-items:start; }
.cs-two-col--wide  { display:grid; grid-template-columns:1.6fr 1fr;  gap:var(--space-16); align-items:start; }
.cs-two-col--narrow{ display:grid; grid-template-columns:1fr 1.6fr;  gap:var(--space-16); align-items:start; }

.cs-body-text { font-size:var(--size-body); line-height:1.8; color:var(--color-text-muted); }

.cs-bullet-list { display:flex; flex-direction:column; gap:var(--space-4); }
.cs-bullet-item { display:flex; gap:var(--space-4); align-items:flex-start; }
.cs-bullet-dot  { width:4px; height:4px; border-radius:50%; background:var(--color-brand-violet); flex-shrink:0; margin-top:9px; }
.cs-bullet-text { font-size:var(--size-body); line-height:var(--lh-relaxed); color:var(--color-text-muted); }

.cs-sub-label {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-sm); letter-spacing:0.10em;
  color:var(--color-brand-blue); text-transform:uppercase; margin-bottom:var(--space-3);
}

.cs-pull-quote {
  border-left:var(--border-strong) solid var(--color-brand-blue);
  padding-left:var(--space-6);
  font-family:var(--font-display); font-style:italic;
  font-size:var(--size-h4); line-height:1.6; color:var(--color-text-muted);
}

/* ══════════════════════════════════════════
   SIDEBAR CARD
══════════════════════════════════════════ */
.cs-sidebar-card {
  background:var(--color-bg-surface);
  border:var(--border-default) solid var(--color-border-subtle);
  border-radius:var(--radius-panel); padding:var(--space-8);
}
.cs-sidebar-card + .cs-sidebar-card { margin-top:var(--space-6); }
.cs-sidebar-card-title {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-sm); letter-spacing:0.12em;
  color:var(--color-text-muted); text-transform:uppercase; margin-bottom:var(--space-6);
}

/* ══════════════════════════════════════════
   WORKFLOW DIAGRAMS
══════════════════════════════════════════ */
.cs-workflow {
  background:var(--color-bg-surface);
  border:var(--border-default) solid var(--color-border-subtle);
  border-radius:var(--radius-panel);
  padding:var(--space-8) var(--page-margin);
  margin-bottom:var(--space-8); overflow-x:auto;
}
.cs-workflow-label {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-xs); letter-spacing:0.12em;
  color:var(--color-text-muted); text-transform:uppercase; margin-bottom:var(--space-6);
}
.cs-workflow-row {
  display:flex; align-items:flex-start; justify-content:center;
  flex-wrap:nowrap; width:100%;
}
.cs-wf-node {
  display:flex; flex-direction:column; align-items:center;
  gap:var(--space-2); flex:1; min-width:0; text-align:center;
}
.cs-wf-box {
  padding:var(--space-3) var(--space-4); border-radius:var(--radius-card);
  font-family:var(--font-mono); font-size:var(--size-mono-xs);
  font-weight:400; letter-spacing:0.06em;
  border:var(--border-default) solid; width:100%; text-align:center;
  white-space:nowrap;
}
.cs-wf-box--neutral { background:var(--color-bg-card); border-color:var(--color-border-strong); color:var(--color-text-default); }
.cs-wf-box--pain    { background:rgba(232,91,91,.08);  border-color:rgba(232,91,91,.5);  color:var(--prim-red); }
.cs-wf-box--warn    { background:rgba(232,168,74,.08); border-color:rgba(232,168,74,.4); color:var(--prim-amber); }
.cs-wf-box--good    { background:rgba(74,104,212,.10); border-color:rgba(74,104,212,.5); color:var(--prim-blue-400); }
.cs-wf-box--ai      { background:rgba(139,107,224,.10);border-color:rgba(139,107,224,.5);color:var(--prim-violet-400); }

/* Arrow — aligned to box center regardless of sub-label */
.cs-wf-arrow {
  color:var(--color-text-muted); font-size:18px;
  flex-shrink:0; padding:0 var(--space-2);
  display:flex; align-items:center;
  /* 36px = approx half box height, keeps arrow at box midpoint */
  margin-top:calc((var(--space-3) * 2 + var(--size-mono-xs) * 1.4) / 2 - 9px);
  align-self:flex-start;
  padding-top:10px;
}
.cs-wf-sub {
  font-family:var(--font-mono); font-size:var(--size-mono-xs);
  color:var(--color-text-placeholder); letter-spacing:0.06em; margin-top:var(--space-1);
}
.cs-wf-badges { display:flex; gap:var(--space-4); margin-top:var(--space-6); flex-wrap:wrap; }
.cs-wf-badge  {
  display:flex; align-items:center; gap:var(--space-2);
  font-family:var(--font-mono); font-size:var(--size-mono-xs);
  letter-spacing:0.06em; color:var(--color-text-muted);
}
.cs-wf-dot        { width:10px; height:10px; border-radius:var(--radius-card); flex-shrink:0; }
.cs-wf-dot--pain  { background:rgba(232,91,91,.25);  border:1px solid rgba(232,91,91,.6);  }
.cs-wf-dot--warn  { background:rgba(232,168,74,.25); border:1px solid rgba(232,168,74,.6); }
.cs-wf-dot--good  { background:rgba(74,104,212,.25); border:1px solid rgba(74,104,212,.6); }
.cs-wf-dot--ai    { background:rgba(139,107,224,.25);border:1px solid rgba(139,107,224,.6);}

/* ══════════════════════════════════════════
   STRATEGIC REFRAME
══════════════════════════════════════════ */
.cs-reframe {
  background:var(--color-bg-surface);
  border:var(--border-default) solid var(--color-border-subtle);
  border-radius:var(--radius-panel);
  padding:var(--space-10) var(--space-12);
  display:flex; flex-direction:column; gap:var(--space-8);
}
.cs-reframe-row { display:flex; align-items:flex-start; gap:var(--space-6); }
.cs-reframe-dir {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-sm); letter-spacing:0.14em;
  color:var(--color-text-muted); text-transform:uppercase;
  padding-top:6px; flex-shrink:0; width:44px;
}
.cs-reframe-dir--to { color:var(--color-brand-blue); }
.cs-reframe-text {
  font-family:var(--font-display); font-weight:300;
  font-size:var(--size-h2); line-height:1.2; color:var(--color-text-default);
}
.cs-reframe-text--muted { color:var(--color-text-muted); }
.cs-reframe-text em {
  font-style:italic;
  background:var(--grad-brand-h);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent; background-clip:text;
}
.cs-reframe-divider { height:1px; background:var(--color-border-subtle); }
.cs-reframe-bullets { display:grid; grid-template-columns:repeat(3,1fr); gap:var(--space-6); margin-top:var(--space-4); }
.cs-reframe-bullet  { display:flex; gap:var(--space-3); align-items:flex-start; }
.cs-reframe-icon {
  width:20px; height:20px; border-radius:50%;
  background:rgba(74,104,212,.15); border:1px solid rgba(74,104,212,.3);
  flex-shrink:0; margin-top:2px;
  display:flex; align-items:center; justify-content:center;
  font-size:10px; color:var(--prim-blue-400);
}

/* ══════════════════════════════════════════
   ARCHITECTURE GRID
══════════════════════════════════════════ */
.cs-arch {
  display:flex; flex-direction:column; gap:1px;
  background:var(--color-border-default);
  border-radius:var(--radius-panel); overflow:hidden;
  border:var(--border-default) solid var(--color-border-default);
  margin-bottom:var(--space-10);
}
.cs-arch-layer {
  background:var(--color-bg-card);
  display:grid; grid-template-columns:180px 1fr;
  align-items:center; gap:var(--space-8); padding:var(--space-6) var(--space-8);
}
.cs-arch-layer-name {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-xs); letter-spacing:0.12em;
  color:var(--color-text-muted); text-transform:uppercase;
}
.cs-arch-items { display:flex; gap:var(--space-3); flex-wrap:wrap; }
.cs-chip {
  padding:var(--space-2) var(--space-4); border-radius:var(--radius-card);
  font-family:var(--font-mono); font-size:var(--size-mono-xs);
  letter-spacing:0.06em; white-space:nowrap;
}
.cs-chip--blue    { background:rgba(74,104,212,.12); border:1px solid rgba(74,104,212,.3); color:var(--prim-blue-400); }
.cs-chip--violet  { background:rgba(139,107,224,.12);border:1px solid rgba(139,107,224,.3);color:var(--prim-violet-400); }
.cs-chip--mag     { background:rgba(168,68,127,.12); border:1px solid rgba(168,68,127,.3); color:var(--prim-magenta-400); }
.cs-chip--neutral { background:var(--color-bg-surface); border:1px solid var(--color-border-strong); color:var(--color-text-muted); }

/* ══════════════════════════════════════════
   DESIGN EXECUTION — sticky scroll
══════════════════════════════════════════ */
.cs-execution {
  display:grid; grid-template-columns:1.4fr 1fr;
  gap:var(--space-12); align-items:start; margin-bottom:var(--space-16);
}
.cs-execution-images { display:flex; flex-direction:column; gap:var(--space-5); }
.cs-execution-text {
  position:sticky; top:calc(68px + var(--space-8));
  display:flex; flex-direction:column; gap:var(--space-8);
}

/* Image slot — scales with viewport */
.cs-img-slot {
  background:var(--color-bg-surface);
  border:var(--border-default) solid var(--color-border-subtle);
  border-radius:var(--radius-panel); overflow:hidden; width:100%;
}
.cs-img-slot img { width:100%; height:auto; display:block; }

/* Exec items */
.cs-exec-num   { font-family:var(--font-mono); font-weight:300; font-size:var(--size-mono-xs); letter-spacing:0.14em; color:var(--color-text-muted); margin-bottom:var(--space-2); }
.cs-exec-title { font-size:var(--size-body-lg); font-weight:500; color:var(--color-text-default); margin-bottom:var(--space-2); }
.cs-exec-body  { font-size:var(--size-body-sm); line-height:1.7; color:var(--color-text-muted); }

/* ══════════════════════════════════════════
   RESULTS GRID
══════════════════════════════════════════ */
.cs-results {
  display:grid; grid-template-columns:repeat(3,1fr);
  gap:1px; background:var(--color-border-default);
  border-radius:var(--radius-panel); overflow:hidden;
  border:var(--border-default) solid var(--color-border-default);
  margin-bottom:var(--space-12);
}
.cs-result-item { background:var(--color-bg-card); padding:var(--space-10) var(--space-8); text-align:center; }
.cs-result-number {
  font-family:var(--font-display); font-weight:300;
  font-size:var(--size-display); line-height:1; margin-bottom:var(--space-3);
}
.cs-result-label { font-size:var(--size-body-lg); font-weight:500; color:var(--color-text-default); margin-bottom:var(--space-3); }
.cs-result-desc  { font-size:var(--size-body-sm); line-height:1.65; color:var(--color-text-muted); }

/* ══════════════════════════════════════════
   AI READINESS
══════════════════════════════════════════ */
.cs-ai-items { display:flex; flex-direction:column; gap:var(--space-8); margin-bottom:var(--space-12); }
.cs-ai-item  { display:grid; grid-template-columns:32px 1fr; gap:var(--space-6); align-items:start; }
.cs-ai-num   { font-family:var(--font-mono); font-weight:300; font-size:var(--size-mono-sm); letter-spacing:0.10em; color:var(--color-brand-violet); padding-top:4px; }
.cs-ai-title { font-size:var(--size-body-lg); font-weight:500; margin-bottom:var(--space-2); }
.cs-ai-body  { font-size:var(--size-body); line-height:var(--lh-relaxed); color:var(--color-text-muted); }
.cs-ai-box   { background:rgba(139,107,224,.06); border:var(--border-default) solid rgba(139,107,224,.2); border-radius:var(--radius-panel); padding:var(--space-8); }
.cs-ai-box-title { font-family:var(--font-mono); font-weight:300; font-size:var(--size-mono-sm); letter-spacing:0.10em; color:var(--color-brand-violet); text-transform:uppercase; margin-bottom:var(--space-5); }

/* ══════════════════════════════════════════
   TAKEAWAYS
══════════════════════════════════════════ */
.cs-takeaway-grid { display:grid; grid-template-columns:1fr 1fr; gap:var(--space-6); margin-bottom:var(--space-12); }
.cs-takeaway-item { background:var(--color-bg-surface); border:var(--border-default) solid var(--color-border-subtle); border-radius:var(--radius-panel); padding:var(--space-6); }
.cs-takeaway-title { font-size:var(--size-body-lg); font-weight:500; color:var(--color-text-default); margin-bottom:var(--space-3); }
.cs-takeaway-body  { font-size:var(--size-body); line-height:1.7; color:var(--color-text-muted); }

/* ══════════════════════════════════════════
   PHASE BADGE
══════════════════════════════════════════ */
.cs-phase-badge {
  display:inline-flex; align-items:center; gap:var(--space-2);
  padding:var(--space-2) var(--space-4);
  background:rgba(74,104,212,.08); border:1px solid rgba(74,104,212,.25);
  border-radius:var(--radius-full);
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-xs); letter-spacing:0.10em;
  color:var(--prim-blue-400); text-transform:uppercase; margin-bottom:var(--space-5);
}
.cs-phase-badge--violet { background:rgba(139,107,224,.08); border-color:rgba(139,107,224,.25); color:var(--prim-violet-400); }
.cs-phase-badge-dot { width:5px; height:5px; border-radius:50%; background:currentColor; flex-shrink:0; }

/* ══════════════════════════════════════════
   CLOSING SECTION — NDA + next case
══════════════════════════════════════════ */
.cs-closing {
  padding:var(--section-lg) var(--page-margin);
  background:var(--color-bg-secondary);
  border-top:var(--border-default) solid var(--color-border-default);
}
.cs-closing-inner {
  display:grid; grid-template-columns:1fr 1fr;
  gap:var(--space-16); align-items:center;
}
.cs-closing-nda-label {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-sm); letter-spacing:0.12em;
  color:var(--color-text-placeholder); text-transform:uppercase; margin-bottom:var(--space-4);
}
.cs-closing-nda-text {
  font-size:var(--size-body); line-height:1.8;
  color:var(--color-text-muted); margin-bottom:var(--space-6);
}

/* Request docs button + next case button — same height, same alignment */
.cs-closing-actions {
  display:flex; align-items:center; gap:var(--space-4);
}
.cs-request-btn {
  display:inline-flex; align-items:center; justify-content:center; gap:var(--space-3);
  height:44px; padding:0 var(--space-6);
  border:var(--border-default) solid rgba(91,127,232,.3);
  border-radius:var(--radius-button); background:transparent;
  font-family:var(--font-mono); font-size:var(--size-mono-sm);
  letter-spacing:0.10em; color:var(--color-text-default);
  cursor:pointer; white-space:nowrap;
  transition:border-color 0.2s, background 0.2s;
}
.cs-request-btn:hover { border-color:rgba(91,127,232,.7); background:rgba(91,127,232,.06); }

/* Next case — right column */
.cs-next {
  display:flex; flex-direction:column;
  align-items:flex-end; gap:var(--space-4);
}
.cs-next-label {
  font-family:var(--font-mono); font-weight:300;
  font-size:var(--size-mono-xs); letter-spacing:0.14em;
  color:var(--color-text-placeholder); text-transform:uppercase;
}
.cs-next-case-title {
  font-family:var(--font-display); font-weight:300;
  font-size:var(--size-h4); color:var(--color-text-default); text-align:right;
}
/* Same height as cs-request-btn */
.cs-next-btn {
  display:inline-flex; align-items:center; justify-content:center; gap:var(--space-4);
  height:44px; padding:0 var(--space-6);
  background:var(--grad-brand-h);
  border-radius:var(--radius-button);
  font-family:var(--font-mono); font-size:var(--size-mono-sm);
  letter-spacing:0.10em; color:var(--prim-neutral-0);
  text-decoration:none; white-space:nowrap;
  transition:filter 0.2s;
}
.cs-next-btn:hover { filter:brightness(1.12); }

/* ══════════════════════════════════════════
   REQUEST DOCS MODAL
══════════════════════════════════════════ */
.cs-modal-overlay {
  position:fixed; inset:0; z-index:200;
  background:rgba(13,13,20,.8); backdrop-filter:blur(8px);
  display:flex; align-items:center; justify-content:center;
  padding:var(--page-margin);
  opacity:0; pointer-events:none; transition:opacity 0.3s ease;
}
.cs-modal-overlay.open { opacity:1; pointer-events:auto; }
.cs-modal {
  background:var(--color-bg-page);
  border:var(--border-default) solid var(--color-border-subtle);
  border-radius:var(--radius-panel); padding:var(--space-10);
  width:100%; max-width:520px;
  transform:translateY(16px); transition:transform 0.3s ease;
}
.cs-modal-overlay.open .cs-modal { transform:translateY(0); }
.cs-modal-header {
  display:flex; align-items:flex-start; justify-content:space-between; margin-bottom:var(--space-8);
}
.cs-modal-title { font-family:var(--font-display); font-weight:300; font-size:var(--size-h3); color:var(--color-text-default); }
.cs-modal-close { background:none; border:none; cursor:pointer; color:var(--color-text-muted); padding:var(--space-1); transition:color 0.2s; }
.cs-modal-close:hover { color:var(--color-text-default); }
.cs-modal-form { display:flex; flex-direction:column; gap:var(--space-4); }
.cs-modal-form .form-field { display:flex; flex-direction:column; gap:var(--space-1); }
.cs-modal-form .form-label { font-family:var(--font-mono); font-size:var(--size-mono-sm); font-weight:300; letter-spacing:0.08em; color:var(--color-text-placeholder); padding:0 2px; }
.cs-modal-form .form-input {
  width:100%; background:var(--color-bg-secondary);
  border:var(--border-default) solid var(--color-border-default);
  border-radius:var(--radius-button); color:var(--color-text-default);
  font-family:var(--font-body); font-size:var(--size-body);
  padding:var(--space-3); outline:none; transition:border-color 0.2s; height:48px;
}
.cs-modal-form .form-input::placeholder { color:var(--color-text-placeholder); }
.cs-modal-form .form-input:focus { border-color:var(--color-brand-blue); }
.cs-modal-form .form-textarea { height:auto; min-height:100px; resize:vertical; }
.cs-modal-success { display:none; text-align:center; padding:var(--space-10) 0; }
.cs-modal-success.show { display:block; }
.cs-modal-success-icon { font-size:32px; margin-bottom:var(--space-4); }
.cs-modal-success-text { font-family:var(--font-display); font-weight:300; font-size:var(--size-h4); color:var(--color-text-default); }

/* ══════════════════════════════════════════
   FOOTER — identical to landing
══════════════════════════════════════════ */
.footer { background:var(--color-bg-secondary); border-top:var(--border-default) solid var(--color-border-strong); }
.footer-inner { display:flex; align-items:center; justify-content:space-between; padding:28px var(--page-margin); }
.footer-copy { display:flex; flex-direction:column; gap:var(--space-2); font-family:var(--font-mono); font-size:var(--size-mono-sm); font-weight:300; letter-spacing:0.08em; color:var(--color-text-placeholder); line-height:1.4; }
.footer-links { display:flex; align-items:center; gap:var(--space-6); }
.footer-link { font-family:var(--font-mono); font-size:var(--size-mono-sm); font-weight:300; letter-spacing:0.08em; color:var(--color-text-placeholder); text-decoration:none; transition:color 0.2s; white-space:nowrap; }
.footer-link:hover { color:var(--color-text-default); }

/* ══════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════ */
@media (max-width: 1024px) {
  .cs-two-col, .cs-two-col--wide, .cs-two-col--narrow { grid-template-columns:1fr; }
  .cs-results         { grid-template-columns:1fr; }
  .cs-reframe-bullets { grid-template-columns:1fr; }
  .cs-takeaway-grid   { grid-template-columns:1fr; }
  .cs-stats           { grid-template-columns:1fr 1fr; }
  .cs-closing-inner   { grid-template-columns:1fr; gap:var(--space-10); }
  .cs-next            { align-items:flex-start; }
  .cs-next-case-title { text-align:left; }
  .cs-execution       { grid-template-columns:1fr; }
  .cs-execution-text  { position:static; }
}

@media (max-width: 768px) {
  /* Nav: hide right items, show mobile actions — same as landing */
  .nav-items          { display:none; }
  .nav-mobile-actions { display:flex; }

  .cs-hero     { min-height:auto; padding-top:calc(68px + var(--space-12)); }
  .cs-stats    { grid-template-columns:1fr; max-width:100%; }

  .cs-workflow-row    { flex-direction:column; align-items:stretch; gap:var(--space-3); }
  .cs-wf-node         { flex:none; width:100%; }
  .cs-wf-arrow        { transform:rotate(90deg); align-self:center; margin-bottom:0; padding:var(--space-1) 0; }
  .cs-wf-box          { white-space:normal; }

  .cs-arch-layer  { grid-template-columns:1fr; }
  .cs-reframe     { padding:var(--space-6); }
  .cs-closing-actions { flex-direction:column; align-items:flex-start; }

  .footer-inner { flex-direction:column; align-items:flex-start; gap:var(--space-4); }
}

@media (max-width: 480px) {
  .cs-results      { grid-template-columns:1fr; }
  .cs-reframe-text { font-size:var(--size-h3); }
  .cs-stats        { grid-template-columns:1fr; }
}