/* Case study page — Remnant edition of the source layout */

.rm-cs { background: var(--ink-900); color: var(--paper); min-height: 100vh; }
.rm-cs .rm-stop { color: var(--red); }

/* ── HERO ────────────────────────────────────────────────────── */
.rm-cs__hero {
  position: relative;
  padding: clamp(48px, 6vw, 80px) 0 clamp(48px, 6vw, 72px);
  overflow: hidden;
  border-bottom: 1px solid var(--ink-800);
}
.rm-cs__hero-bg {
  position: absolute; inset: 0;
  background:
    linear-gradient(180deg, rgba(34,32,39,0.55) 0%, rgba(34,32,39,0.92) 100%);
  z-index: 0;
}
.rm-cs__hero-product {
  position: absolute; inset: 0;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  align-items: center;
  gap: 12px;
  padding: 0 24px;
  opacity: 0.5;
  z-index: 0;
  pointer-events: none;
  filter: blur(0.5px) brightness(0.85) contrast(1.1);
}
.rm-cs__hero-product img {
  width: 100%;
  height: 100%;
  max-height: 360px;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 12px 32px rgba(0,0,0,0.6));
}
.rm-cs__hero-inner {
  position: relative; z-index: 1;
  max-width: var(--rm-max-w, 1180px);
  margin: 0 auto;
  padding: 0 var(--rm-pad-x, 64px);
}
.rm-cs__back {
  font: var(--type-small); font-weight: 500;
  background: transparent; border: 0; color: var(--ink-400);
  padding: 0; margin-bottom: 28px; cursor: pointer;
  letter-spacing: 0.04em;
  white-space: nowrap;
  display: inline-flex; align-items: center; gap: 6px;
}
.rm-cs__back:hover { color: var(--paper); }
.rm-cs__tags {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 28px;
}
.rm-cs__tag {
  font: 600 10px/1 var(--font-sans);
  letter-spacing: 0.12em;
  padding: 6px 12px;
  border: 1px solid;
  border-radius: 999px;
  white-space: nowrap;
}
.rm-cs__hero h1 {
  font: 700 clamp(32px, 4.4vw, 56px)/1.05 var(--font-sans);
  letter-spacing: -0.025em;
  margin: 0 0 24px;
  max-width: 22ch;
  color: var(--paper);
}
.rm-cs__hero h1 em { color: var(--red); font-style: normal; }
.rm-cs__lead {
  font: 400 clamp(15px, 1.4vw, 18px)/1.55 var(--font-sans);
  color: var(--ink-200);
  max-width: 64ch;
  margin: 0;
}

/* ── BODY ────────────────────────────────────────────────────── */
.rm-cs__body {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: clamp(40px, 5vw, 72px);
  max-width: var(--rm-max-w, 1180px);
  margin: 0 auto;
  padding: clamp(56px, 6vw, 80px) var(--rm-pad-x, 64px) clamp(72px, 8vw, 120px);
}
.rm-cs__toc {
  position: sticky; top: 96px;
  align-self: start;
  border-left: 1px solid var(--ink-800);
  padding-left: 16px;
}
.rm-cs__toc-head {
  font: var(--type-mono); font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-400);
  margin-bottom: 14px;
}
.rm-cs__toc-link {
  display: block;
  padding: 6px 0;
  font: 500 13px/1.3 var(--font-sans);
  color: var(--ink-400);
  text-decoration: none;
  border-left: 2px solid transparent;
  padding-left: 12px;
  margin-left: -18px;
  transition: color var(--dur-base) var(--ease-standard), border-color var(--dur-base) var(--ease-standard);
}
.rm-cs__toc-link:hover { color: var(--paper); }
.rm-cs__toc-link.is-active {
  color: var(--red);
  border-left-color: var(--red);
}

/* Sections */
.rm-cs__sec { margin-bottom: 88px; scroll-margin-top: 96px; }
.rm-cs__sec:last-child { margin-bottom: 0; }
.rm-cs__eye {
  font: 600 11px/1 var(--font-sans);
  letter-spacing: 0.18em;
  color: var(--red);
  margin-bottom: 14px;
}
.rm-cs__main h2 {
  font: 700 clamp(24px, 2.6vw, 32px)/1.15 var(--font-sans);
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  color: var(--paper);
}
.rm-cs__h3 {
  font: 700 clamp(20px, 2vw, 24px)/1.15 var(--font-sans);
  letter-spacing: -0.015em;
  margin: 0 0 14px;
  color: var(--paper);
}
.rm-cs__main p {
  font: 400 14px/1.65 var(--font-sans);
  color: var(--ink-400);
  max-width: 68ch;
  margin: 0 0 28px;
}
.rm-cs__main p strong { color: var(--paper); font-weight: 600; }

/* Stat grid */
.rm-cs__statgrid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
  margin-top: 28px;
}
.rm-cs__statcell {
  background: var(--ink-850);
  border: 1px solid var(--ink-800);
  padding: 28px 22px;
}
.rm-cs__statbig {
  font: 700 clamp(28px, 3vw, 38px)/1 var(--font-sans);
  letter-spacing: -0.025em;
  color: var(--paper);
}
.rm-cs__statlbl {
  font: var(--type-mono); font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-400);
  margin-top: 14px;
  text-transform: uppercase;
}
.rm-cs__statsub {
  font: var(--type-mono); font-size: 10px;
  color: var(--ink-600);
  margin-top: 4px;
}

/* Steps */
.rm-cs__steps {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 24px;
}
.rm-cs__step {
  background: var(--ink-850);
  border: 1px solid var(--ink-800);
  border-left: 3px solid var(--red);
  padding: 18px 20px;
  display: grid;
  grid-template-columns: 36px 1fr;
  gap: 16px;
  align-items: center;
}
.rm-cs__step-num {
  font: 700 22px/1 var(--font-sans);
  color: var(--red);
  letter-spacing: -0.02em;
}
.rm-cs__step-text {
  font: var(--type-body); font-size: 13px; line-height: 1.5;
  color: var(--ink-200);
}

/* Charts */
.rm-cs__charts {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-top: 32px;
}
.rm-cs__chartcard {
  background: var(--ink-850);
  border: 1px solid var(--ink-800);
  padding: 24px;
}
.rm-cs__chartcard h4 {
  font: 600 16px/1.3 var(--font-sans);
  letter-spacing: -0.01em;
  margin: 0 0 4px;
  color: var(--paper);
}
.rm-cs__chartmeta {
  font: var(--type-mono); font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-600);
  text-transform: uppercase;
  margin-bottom: 14px;
}
.rm-cs__chartcard--donut {
  display: flex; flex-direction: column; align-items: center;
}
.rm-cs__chartcard--wide {
  grid-column: 1 / -1;
  margin-top: 16px;
}
.rm-cs__chartlegend {
  display: flex; gap: 18px;
  font: var(--type-mono); font-size: 10px;
  color: var(--ink-400);
  margin-top: 10px;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  justify-content: flex-start;
  flex-wrap: wrap;
}
.rm-cs__chartlegend--center { justify-content: center; }
.rm-cs__chartlegend i {
  display: inline-block; width: 10px; height: 10px;
  margin-right: 6px; vertical-align: middle;
}

/* Halo */
.rm-cs__halo {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px;
  margin: 24px 0 32px;
}
.rm-cs__halo > div {
  background: var(--ink-850);
  border: 1px solid var(--ink-800);
  border-left: 3px solid var(--red);
  padding: 22px;
  text-align: left;
}
.rm-cs__halo .big {
  font: 700 32px/1 var(--font-sans);
  letter-spacing: -0.02em;
  color: var(--red);
}
.rm-cs__halo .lbl {
  font: var(--type-mono); font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--ink-400);
  margin-top: 10px;
  text-transform: uppercase;
}

/* Outcome callout */
.rm-cs__callout {
  background: var(--ink-850);
  border: 1px solid var(--ink-800);
  border-left: 3px solid var(--red);
  padding: 28px;
  margin-top: 16px;
}
.rm-cs__callout-title {
  font: 700 19px/1.3 var(--font-sans);
  letter-spacing: -0.01em;
  color: var(--paper);
  margin-bottom: 12px;
}
.rm-cs__callout p { margin: 0; color: var(--ink-200); }

/* ── Mobile ──────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .rm-cs__hero-product { grid-template-columns: repeat(3, 1fr); }
  .rm-cs__hero-product img:nth-child(n+4) { display: none; }
  .rm-cs__body { grid-template-columns: 1fr; gap: 32px; }
  .rm-cs__toc { display: none; }
  .rm-cs__statgrid { grid-template-columns: 1fr 1fr; }
  .rm-cs__steps { grid-template-columns: 1fr; }
  .rm-cs__charts { grid-template-columns: 1fr; }
  .rm-cs__halo { grid-template-columns: 1fr; }
  .rm-cs__sec { margin-bottom: 56px; }
}