/* ===== Case-study extensions — same monochrome spirit ===== */

  /* Reveal removed for reliable rendering — keep selector inert */
  .reveal { /* no-op */ }

  /* Hero variant — inherits .hero h1 typography */
  .cs-hero { padding: 80px 0 60px; }
  .cs-hero h1 {
    font-weight: 400;
    font-size: clamp(40px, 6.5vw, 80px);
    line-height: 1.05;
    letter-spacing: -0.035em;
    color: var(--ink);
    max-width: 980px;
  }
  .cs-hero h1 .accent { color: var(--muted); }
  .cs-hero .hero-sub {
    margin-top: 40px;
    max-width: 600px;
    font-size: 18px;
    line-height: 1.55;
    color: var(--ink-soft);
  }
  .cs-hero .hero-meta { margin-top: 48px; }
  .cs-hero-shot {
    margin-top: 56px;
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
    aspect-ratio: 16 / 8.5;
    background: var(--hover);
  }
  .cs-hero-shot img { width: 100%; height: 100%; object-fit: cover; display: block; }

  /* Scope pillars */
  .pillars {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .pillar {
    padding: 32px 28px;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }
  .pillar:nth-child(3n) { border-right: none; }
  .pillar:nth-last-child(-n+3) { border-bottom: none; }
  .pillar-idx { font-size: 13px; color: var(--muted); margin-bottom: 14px; }
  .pillar-name { font-size: 20px; letter-spacing: -0.02em; margin-bottom: 8px; }
  .pillar-desc { font-size: 14px; color: var(--ink-soft); line-height: 1.55; }

  /* Two-column read */
  .two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    margin-bottom: 48px;
  }
  .two-col h3 {
    font-size: 22px;
    font-weight: 400;
    letter-spacing: -0.02em;
    margin-bottom: 14px;
  }
  .two-col p { font-size: 16px; color: var(--ink-soft); line-height: 1.65; }

  /* Process breakdown bar */
  .process-bar {
    display: grid;
    grid-template-columns: 36fr 32fr 20fr 12fr;
    gap: 8px;
    margin-top: 32px;
  }
  .pb-cell {
    border: 1px solid var(--line);
    border-radius: 10px;
    padding: 20px 18px;
    transition: border-color .25s ease, padding .25s ease;
  }
  .pb-cell:hover { border-color: var(--ink); }
  .pb-pct {
    font-size: 32px;
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 10px;
  }
  .pb-label { font-size: 13px; color: var(--muted); }

  /* Persona card */
  .persona {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 32px;
    margin-top: 24px;
  }
  .persona-photo {
    aspect-ratio: 3 / 4;
    background: var(--hover);
    border-radius: 10px;
    overflow: hidden;
  }
  .persona-photo img { width: 100%; height: 100%; object-fit: cover; display: block; filter: grayscale(1); transition: filter .35s ease; }
  .persona:hover .persona-photo img { filter: grayscale(0); }
  .persona-name {
    font-size: 26px; letter-spacing: -0.02em; margin-bottom: 4px;
  }
  .persona-age { font-size: 13px; color: var(--muted); margin-bottom: 24px; }
  .persona-quote {
    font-size: 16px; color: var(--ink-soft); line-height: 1.65;
    border-left: 2px solid var(--line); padding-left: 18px;
  }
  .persona-meta {
    display: flex; gap: 32px; margin-top: 24px;
    border-top: 1px solid var(--line); padding-top: 20px;
  }
  .pm-label { font-size: 12px; color: var(--muted); margin-bottom: 6px; }
  .pm-val { font-size: 16px; color: var(--ink); }

  /* Persona mini-group */
  .persona-group {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
    margin-top: 32px;
  }
  .pg-card {
    border: 1px solid var(--line); border-radius: 10px;
    padding: 16px; text-align: center;
  }
  .pg-photo {
    aspect-ratio: 1; border-radius: 999px; overflow: hidden;
    margin: 0 auto 14px; max-width: 110px; background: var(--hover);
  }
  .pg-photo img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(1); transition: filter .3s ease; }
  .pg-card:hover .pg-photo img { filter: grayscale(0); }
  .pg-name { font-size: 15px; margin-bottom: 2px; }
  .pg-age { font-size: 12px; color: var(--muted); }

  /* Task flow chips */
  .flow {
    display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
    margin-top: 32px;
  }
  .flow .pill { background: var(--bg); }
  .flow-arrow {
    color: var(--muted); font-size: 14px; user-select: none;
  }

  /* Achievement badges grid */
  .badges {
    display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px;
    margin-top: 32px;
  }
  .badge {
    aspect-ratio: 1; background: var(--ink); border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    transition: transform .3s ease;
  }
  .badge:hover { transform: translateY(-3px); }
  .badge img { width: 78%; height: 78%; object-fit: contain; }

  /* Outcome screens */
  .screen {
    margin-top: 48px;
    border: 1px solid var(--line); border-radius: 14px;
    overflow: hidden; background: var(--hover);
  }
  .screen img { width: 100%; height: auto; display: block; }
  .screen-caption {
    padding: 18px 24px; border-top: 1px solid var(--line);
    display: flex; justify-content: space-between; align-items: baseline;
    font-size: 13px; color: var(--muted);
  }
  .screen-caption strong { color: var(--ink); font-weight: 500; }

  .screens-2 {
    display: grid; grid-template-columns: 1fr 1fr; gap: 24px;
    margin-top: 48px;
  }
  .screens-2 .screen { margin-top: 0; }

  /* Mobile landing showcase */
  .mobile-showcase {
    display: grid; grid-template-columns: 320px 1fr; gap: 56px;
    margin-top: 48px; align-items: start;
  }
  .mobile-frame {
    border: 1px solid var(--line); border-radius: 28px;
    overflow: hidden; background: var(--ink);
    height: 640px; position: relative;
    padding: 10px;
  }
  .mobile-frame-inner {
    height: 100%; border-radius: 20px; overflow: hidden;
    background: var(--bg);
  }
  .mobile-frame-scroll {
    height: 100%; overflow-y: auto; overflow-x: hidden;
    scrollbar-width: thin;
  }
  .mobile-frame-scroll::-webkit-scrollbar { width: 4px; }
  .mobile-frame-scroll::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.2); border-radius: 4px; }
  .mobile-frame img { width: 100%; height: auto; display: block; }
  .mobile-notes h3 {
    font-size: 22px; font-weight: 400; letter-spacing: -0.02em;
    margin-bottom: 16px;
  }
  .mobile-notes ul { list-style: none; }
  .mobile-notes li {
    padding: 14px 0; border-top: 1px solid var(--line);
    display: grid; grid-template-columns: 40px 1fr; gap: 16px;
    align-items: baseline;
  }
  .mobile-notes li:last-child { border-bottom: 1px solid var(--line); }
  .mn-idx { font-size: 13px; color: var(--muted); }
  .mn-text { font-size: 15px; color: var(--ink-soft); line-height: 1.55; }

  /* Testimonials strip */
  .testimonials {
    display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px;
    margin-top: 32px;
  }
  .testi {
    aspect-ratio: 4 / 5; border-radius: 10px; overflow: hidden;
    background: var(--hover); position: relative;
    border: 1px solid var(--line);
  }
  .testi img { width: 100%; height: 100%; object-fit: cover; display: block; }
  .testi-cap {
    position: absolute; bottom: 0; left: 0; right: 0;
    padding: 12px 14px;
    background: linear-gradient(to top, rgba(0,0,0,.7), transparent);
    color: #fff;
  }
  .testi-name { font-size: 14px; margin-bottom: 2px; }
  .testi-city { font-size: 11px; opacity: .8; }

  /* Results strip */
  .results-grid {
    display: grid; grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    padding: 56px 0;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    margin-top: 56px;
  }
  .res-num {
    font-size: clamp(36px, 4.4vw, 52px);
    letter-spacing: -0.035em; line-height: 1;
  }
  .res-label {
    margin-top: 12px; font-size: 14px; color: var(--ink-soft);
    max-width: 200px; line-height: 1.5;
  }

  /* Responsive */
  @media (max-width: 900px) {
    .cs-hero { padding: 50px 0; }
    .cs-hero-shot { aspect-ratio: 4 / 3; }
    .pillars { grid-template-columns: 1fr; }
    .pillar { border-right: none; }
    .pillar:nth-last-child(-n+3) { border-bottom: 1px solid var(--line); }
    .pillar:last-child { border-bottom: none; }
    .two-col { grid-template-columns: 1fr; gap: 32px; }
    .process-bar { grid-template-columns: 1fr 1fr; }
    .persona { grid-template-columns: 1fr; gap: 24px; padding: 20px; }
    .persona-group { grid-template-columns: 1fr 1fr; }
    .badges { grid-template-columns: repeat(3, 1fr); gap: 12px; }
    .screens-2 { grid-template-columns: 1fr; }
    .mobile-showcase { grid-template-columns: 1fr; gap: 32px; }
    .mobile-frame { max-width: 300px; margin: 0 auto; height: 560px; }
    .testimonials { grid-template-columns: 1fr 1fr; }
    .results-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
    .flow { gap: 8px; }
  }
/* ===== UNIFORM SITE TYPOGRAPHY ===== */
body { font-family: var(--font); }
h1, h2, h3,
.hero h1,
.cs-hero h1,
.block h2,
.cs-block h2,
.contact h2,
.cs-contact h2,
.stat-num,
.result-num,
.res-num {
  font-family: var(--serif);
  font-weight: 400;
}
.logo,
.nav-links,
.eyebrow,
.eyebrow-row,
.pill,
.tag,
.meta,
.stat-label,
.stats-label,
.result-label,
.contact-eyebrow,
.cs-contact-eyebrow,
.footer-links,
.cs-footer-links {
  font-family: var(--mono);
}
.site-identity {
  padding: 34px 0 0;
}
.site-name {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(22px, 3vw, 34px);
  letter-spacing: -0.015em;
  line-height: 1;
}
.site-availability {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: 7px 15px;
  margin-top: 20px;
}
.site-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #000;
}