/* ============================================================
   Kevin Champlin — Portfolio
   "Obsidian & Brass" — dark editorial luxe
   Self-contained. Loaded only on /portfolio and /case/*.
   ============================================================ */

/* ---------- tokens ---------- */
:root {
  --ink:        #0B0B0C;
  --ink-1:      #0F0F11;
  --ink-2:      #141417;
  --ink-3:      #1A1A1F;
  --ink-4:      #212128;

  --hair:       rgba(255, 255, 255, 0.07);
  --hair-2:     rgba(255, 255, 255, 0.12);
  --hair-3:     rgba(255, 255, 255, 0.18);

  --paper:      #F3EFE7;
  --paper-dim:  rgba(243, 239, 231, 0.62);
  --paper-faint:rgba(243, 239, 231, 0.40);

  --brass:        #C8A86B;
  --brass-bright: #E6CF98;
  --brass-deep:   #8E7038;
  --brass-soft:   rgba(200, 168, 107, 0.12);
  --brass-line:   rgba(200, 168, 107, 0.34);

  --serif: "Fraunces", ui-serif, Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono:  "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --maxw: 1180px;
  --gutter: clamp(1.25rem, 5vw, 3rem);
  --section-y: clamp(4.5rem, 10vw, 8.5rem);
  --radius: 14px;
  --radius-lg: 22px;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body.lux {
  font-family: var(--sans);
  background: var(--ink);
  color: var(--paper);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  position: relative;
}

/* faint film grain + brass aura */
body.lux::before {
  content: "";
  position: fixed; inset: 0;
  background:
    radial-gradient(120% 80% at 50% -10%, rgba(200, 168, 107, 0.10), transparent 55%),
    radial-gradient(80% 60% at 100% 0%, rgba(200, 168, 107, 0.05), transparent 50%);
  pointer-events: none; z-index: 0;
}
body.lux::after {
  content: "";
  position: fixed; inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.025'/%3E%3C/svg%3E");
  pointer-events: none; z-index: 1; opacity: 0.5; mix-blend-mode: overlay;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }

/* ---------- typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 480;
  font-optical-sizing: auto;
  line-height: 1.02;
  letter-spacing: -0.015em;
}
.serif { font-family: var(--serif); }

.display {
  font-size: clamp(2.7rem, 7.5vw, 5.6rem);
  font-weight: 460;
  line-height: 0.98;
  letter-spacing: -0.025em;
}
.display em { font-style: italic; color: var(--brass-bright); font-weight: 420; }

.h2 { font-size: clamp(1.9rem, 4.2vw, 3.1rem); line-height: 1.04; }
.h3 { font-size: clamp(1.25rem, 2.4vw, 1.6rem); }

.lede {
  font-size: clamp(1.05rem, 1.7vw, 1.3rem);
  line-height: 1.55;
  color: var(--paper-dim);
  max-width: 56ch;
  font-weight: 400;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--brass);
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  font-weight: 500;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--brass);
  opacity: 0.7;
}
.eyebrow--bare::before { display: none; }

.muted { color: var(--paper-dim); }
.mono { font-family: var(--mono); }

/* ---------- layout ---------- */
.wrap { width: min(100% - calc(var(--gutter) * 2), var(--maxw)); margin-inline: auto; position: relative; z-index: 2; }
.section { padding-block: var(--section-y); position: relative; z-index: 2; }
.section--tight { padding-block: clamp(3rem, 6vw, 5rem); }
.hairline { border: none; border-top: 1px solid var(--hair); margin: 0; }

.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 2rem; flex-wrap: wrap; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section-head__title { margin-top: 1rem; }
.section-no { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.2em; color: var(--paper-faint); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55rem;
  padding: 0.85rem 1.5rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  border-radius: 999px;
  transition: transform 0.35s var(--ease), background 0.35s var(--ease), border-color 0.35s var(--ease), box-shadow 0.35s var(--ease), color 0.35s var(--ease);
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn .arrow { transition: transform 0.35s var(--ease); }
.btn:hover .arrow { transform: translateX(4px); }
.btn--primary {
  background: linear-gradient(135deg, var(--brass-bright), var(--brass));
  color: #1a1408;
  font-weight: 600;
  box-shadow: 0 10px 30px -12px rgba(200, 168, 107, 0.6);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 18px 40px -12px rgba(200, 168, 107, 0.7); }
.btn--ghost { border-color: var(--hair-3); color: var(--paper); }
.btn--ghost:hover { border-color: var(--brass-line); background: var(--brass-soft); transform: translateY(-2px); }

.linklike { font-family: var(--mono); font-size: 0.8rem; letter-spacing: 0.04em; color: var(--brass); display: inline-flex; align-items: center; gap: 0.4rem; border-bottom: 1px solid transparent; transition: border-color 0.3s, gap 0.3s; }
.linklike:hover { border-color: var(--brass-line); gap: 0.7rem; }

/* ---------- header ---------- */
.lux-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  background: rgba(11, 11, 12, 0.72);
  border-bottom: 1px solid transparent;
  transition: border-color 0.4s, background 0.4s;
}
.lux-header.is-stuck { border-bottom-color: var(--hair); background: rgba(11, 11, 12, 0.88); }
.lux-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; padding-block: 1.1rem; }
.lux-logo { display: inline-flex; align-items: baseline; gap: 0.6rem; font-family: var(--serif); font-size: 1.2rem; letter-spacing: -0.01em; }
.lux-logo b { font-weight: 540; }
.lux-logo span { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--brass); }
.lux-nav { display: flex; align-items: center; gap: 2rem; }
.lux-nav a { font-family: var(--mono); font-size: 0.78rem; letter-spacing: 0.04em; color: var(--paper-dim); transition: color 0.3s; position: relative; }
.lux-nav a:hover, .lux-nav a.is-active { color: var(--paper); }
.lux-nav a.is-active::after { content: ""; position: absolute; left: 0; right: 0; bottom: -6px; height: 1px; background: var(--brass); }
.lux-nav__cta { padding: 0.5rem 1.1rem; border: 1px solid var(--hair-3); border-radius: 999px; color: var(--paper) !important; }
.lux-nav__cta:hover { border-color: var(--brass-line); background: var(--brass-soft); }
.lux-burger { display: none; width: 42px; height: 42px; border: 1px solid var(--hair-2); border-radius: 10px; flex-direction: column; gap: 4px; align-items: center; justify-content: center; }
.lux-burger span { width: 18px; height: 1.5px; background: var(--paper); transition: 0.3s; }
.lux-burger.is-open span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.lux-burger.is-open span:nth-child(2) { opacity: 0; }
.lux-burger.is-open span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

@media (max-width: 860px) {
  .lux-burger { display: flex; }
  .lux-nav {
    position: fixed; inset: 64px 0 auto 0;
    flex-direction: column; align-items: flex-start; gap: 0;
    background: rgba(11, 11, 12, 0.97); backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--hair);
    padding: 1rem var(--gutter) 2rem;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: 0.35s var(--ease);
  }
  .lux-nav.is-open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .lux-nav a { padding: 0.9rem 0; width: 100%; border-bottom: 1px solid var(--hair); font-size: 0.95rem; }
  .lux-nav__cta { margin-top: 1rem; border-color: var(--brass-line); }
}

/* ---------- hero ---------- */
.hero { padding-top: clamp(3rem, 7vw, 6rem); padding-bottom: clamp(3rem, 6vw, 5rem); position: relative; z-index: 2; }
.hero__grid { display: grid; grid-template-columns: 1.55fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); align-items: center; }
.badge {
  display: inline-flex; align-items: center; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em;
  padding: 0.4rem 0.9rem; border: 1px solid var(--hair-2); border-radius: 999px;
  color: var(--paper-dim); margin-bottom: 1.8rem;
}
.badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--brass-bright); box-shadow: 0 0 0 3px var(--brass-soft); animation: pulse 2.6s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; } 50% { opacity: 0.4; } }
.hero h1 { margin-bottom: 1.6rem; }
.hero__sub { margin-bottom: 2.2rem; }
.hero__actions { display: flex; gap: 0.9rem; flex-wrap: wrap; align-items: center; }

.hero__portrait { position: relative; }
.hero__portrait figure { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--hair-2); aspect-ratio: 4 / 5; background: var(--ink-2); }
.hero__portrait img { width: 100%; height: 100%; object-fit: cover; filter: grayscale(0.15) contrast(1.02); }
.hero__portrait figure::after { content: ""; position: absolute; inset: 0; background: linear-gradient(160deg, transparent 45%, rgba(11, 11, 12, 0.55)); }
.hero__portrait-tag { position: absolute; left: 1rem; bottom: 1rem; right: 1rem; z-index: 2; display: flex; justify-content: space-between; align-items: flex-end; }
.hero__portrait-tag .name { font-family: var(--serif); font-size: 1.15rem; }
.hero__portrait-tag .role { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.12em; color: var(--brass-bright); text-transform: uppercase; }

@media (max-width: 820px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__portrait { order: -1; max-width: 320px; }
}

/* ---------- proof / marquee ---------- */
.proof { border-block: 1px solid var(--hair); }
.proof__inner { display: flex; align-items: center; justify-content: space-between; gap: 2rem; flex-wrap: wrap; padding-block: 1.6rem; }
.proof__label { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--paper-faint); }
.proof__names { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.4rem); flex-wrap: wrap; }
.proof__names span { font-family: var(--serif); font-size: clamp(1.05rem, 2vw, 1.45rem); color: var(--paper-dim); transition: color 0.3s; }
.proof__names span:hover { color: var(--paper); }

/* ---------- stat row ---------- */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--ink-1); padding: clamp(1.5rem, 3vw, 2.4rem); }
.stat__num { font-family: var(--serif); font-size: clamp(2rem, 4.5vw, 3.2rem); line-height: 1; color: var(--paper); }
.stat__num em { font-style: normal; color: var(--brass); }
.stat__label { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--paper-dim); margin-top: 0.7rem; line-height: 1.4; }
@media (max-width: 760px) { .stats { grid-template-columns: repeat(2, 1fr); } }

/* ---------- case study features ---------- */
.cases { display: flex; flex-direction: column; gap: clamp(1.5rem, 3vw, 2.5rem); }
.case-card {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 0;
  border: 1px solid var(--hair); border-radius: var(--radius-lg); overflow: hidden;
  background: var(--ink-1);
  transition: border-color 0.45s var(--ease), transform 0.45s var(--ease), box-shadow 0.45s var(--ease);
}
.case-card:hover { border-color: var(--brass-line); transform: translateY(-4px); box-shadow: 0 30px 60px -30px rgba(0, 0, 0, 0.8); }
.case-card:nth-child(even) .case-card__media { order: 2; }
.case-card__media { position: relative; min-height: 320px; overflow: hidden; background: var(--ink-3); }
.case-card__media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.6s var(--ease); }
.case-card:hover .case-card__media img { transform: scale(1.04); }
.case-card__media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(110deg, transparent 50%, rgba(11, 11, 12, 0.35)); }
.case-card__media--mono { display: flex; align-items: center; justify-content: center; background: radial-gradient(circle at 30% 25%, rgba(200,168,107,0.12), transparent 60%), var(--ink-2); }
.case-card__crest { font-family: var(--serif); font-size: clamp(2.5rem, 6vw, 4.5rem); color: var(--brass); opacity: 0.92; letter-spacing: -0.02em; text-align: center; padding: 1rem; }
.case-card__body { padding: clamp(1.8rem, 3.5vw, 3rem); display: flex; flex-direction: column; gap: 1rem; }
.case-card__meta { display: flex; gap: 1rem; flex-wrap: wrap; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--paper-faint); }
.case-card__meta .brass { color: var(--brass); }
.case-card__body h3 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.case-card__body p { color: var(--paper-dim); font-size: 1rem; }
.case-card__tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: auto; }
.tag { font-family: var(--mono); font-size: 0.68rem; padding: 0.3rem 0.7rem; border: 1px solid var(--hair-2); border-radius: 999px; color: var(--paper-dim); }
.case-card__more { margin-top: 0.5rem; }
@media (max-width: 760px) {
  .case-card { grid-template-columns: 1fr; }
  .case-card:nth-child(even) .case-card__media { order: 0; }
  .case-card__media { min-height: 220px; }
}

/* ---------- work grid + tabs ---------- */
.tabs { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 2.5rem; }
.tab { font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.04em; padding: 0.55rem 1.1rem; border: 1px solid var(--hair-2); border-radius: 999px; color: var(--paper-dim); transition: 0.3s; }
.tab:hover { border-color: var(--brass-line); color: var(--paper); }
.tab.is-active { background: var(--brass-soft); border-color: var(--brass-line); color: var(--brass-bright); }
.tab .count { opacity: 0.6; margin-left: 0.4rem; }

.work-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 920px) { .work-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .work-grid { grid-template-columns: 1fr; } }

.work-card {
  display: flex; flex-direction: column;
  border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden;
  background: var(--ink-1);
  transition: border-color 0.4s var(--ease), transform 0.4s var(--ease);
}
.work-card.is-hidden { display: none; }
.work-card:hover { border-color: var(--brass-line); transform: translateY(-4px); }
.work-card__shot { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--ink-3); border-bottom: 1px solid var(--hair); }
.work-card__shot img { width: 100%; height: 100%; object-fit: cover; object-position: top; transition: transform 0.6s var(--ease); }
.work-card:hover .work-card__shot img { transform: scale(1.05); }
.work-card__status { position: absolute; top: 0.7rem; left: 0.7rem; font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.06em; text-transform: uppercase; padding: 0.25rem 0.6rem; border-radius: 999px; background: rgba(11,11,12,0.7); border: 1px solid var(--hair-2); color: var(--brass-bright); backdrop-filter: blur(6px); }
.work-card__body { padding: 1.2rem 1.3rem 1.4rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.work-card__body h4 { font-size: 1.2rem; }
.work-card__body p { font-size: 0.88rem; color: var(--paper-dim); line-height: 1.5; }
.work-card__stack { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.03em; color: var(--paper-faint); margin-top: auto; padding-top: 0.6rem; }
.work-card__foot { display: flex; gap: 1rem; margin-top: 0.8rem; }

/* ---------- client roster ---------- */
.roster { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden; }
@media (max-width: 640px) { .roster { grid-template-columns: 1fr; } }
.roster a {
  background: var(--ink-1); padding: 1.1rem 1.3rem;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  transition: background 0.3s, color 0.3s;
}
.roster a:hover { background: var(--ink-3); }
.roster__name { font-family: var(--serif); font-size: 1.1rem; }
.roster__host { font-family: var(--mono); font-size: 0.68rem; color: var(--paper-faint); transition: color 0.3s; }
.roster a:hover .roster__host { color: var(--brass); }

/* ---------- skills matrix ---------- */
.skills { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
@media (max-width: 820px) { .skills { grid-template-columns: 1fr; } }
.skill { border: 1px solid var(--hair); border-radius: var(--radius); padding: 1.6rem 1.5rem; background: var(--ink-1); }
.skill h4 { font-family: var(--mono); font-weight: 500; font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--brass); margin-bottom: 1rem; }
.skill ul { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.55rem; }
.skill li { font-size: 0.92rem; color: var(--paper-dim); display: flex; gap: 0.6rem; align-items: baseline; }
.skill li::before { content: "—"; color: var(--brass-deep); }

/* ---------- timeline ---------- */
.timeline { border-left: 1px solid var(--hair-2); margin-left: 0.5rem; display: flex; flex-direction: column; gap: 2.2rem; }
.tl-item { position: relative; padding-left: 2rem; }
.tl-item::before { content: ""; position: absolute; left: -5px; top: 6px; width: 9px; height: 9px; border-radius: 50%; background: var(--brass); box-shadow: 0 0 0 4px rgba(200,168,107,0.12); }
.tl-year { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.1em; color: var(--brass); }
.tl-role { font-family: var(--serif); font-size: 1.3rem; margin: 0.3rem 0 0.2rem; }
.tl-org { font-family: var(--mono); font-size: 0.74rem; color: var(--paper-faint); margin-bottom: 0.5rem; }
.tl-item p { color: var(--paper-dim); font-size: 0.95rem; max-width: 60ch; }

/* ---------- quote ---------- */
.quote { border: 1px solid var(--hair); border-radius: var(--radius-lg); padding: clamp(2rem, 5vw, 4rem); background: linear-gradient(160deg, var(--ink-2), var(--ink-1)); position: relative; }
.quote__mark { font-family: var(--serif); font-size: 5rem; line-height: 0.5; color: var(--brass-deep); opacity: 0.5; }
.quote blockquote { font-family: var(--serif); font-size: clamp(1.4rem, 3vw, 2.1rem); line-height: 1.3; letter-spacing: -0.01em; margin: 0.5rem 0 1.5rem; max-width: 30ch; }
.quote blockquote em { color: var(--brass-bright); font-style: italic; }
.quote cite { font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.06em; color: var(--paper-faint); font-style: normal; }

/* ---------- contact CTA ---------- */
.cta { text-align: center; border: 1px solid var(--hair); border-radius: var(--radius-lg); padding: clamp(3rem, 7vw, 6rem) clamp(1.5rem, 5vw, 4rem); background: radial-gradient(120% 120% at 50% 0%, var(--brass-soft), transparent 55%), var(--ink-1); }
.cta h2 { margin: 1.2rem auto 1.3rem; max-width: 18ch; }
.cta .lede { margin: 0 auto 2.2rem; }
.cta__actions { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }

/* ---------- footer ---------- */
.lux-footer { border-top: 1px solid var(--hair); padding-block: clamp(2.5rem, 5vw, 4rem); position: relative; z-index: 2; }
.lux-footer__top { display: flex; justify-content: space-between; gap: 2rem; flex-wrap: wrap; align-items: flex-start; margin-bottom: 2.5rem; }
.lux-footer__brand { font-family: var(--serif); font-size: 1.6rem; max-width: 22ch; line-height: 1.1; }
.lux-footer__brand span { color: var(--brass); }
.lux-footer__links { display: flex; gap: 3rem; flex-wrap: wrap; }
.lux-footer__col h5 { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--paper-faint); margin-bottom: 1rem; }
.lux-footer__col a { display: block; color: var(--paper-dim); font-size: 0.92rem; padding: 0.3rem 0; transition: color 0.3s; }
.lux-footer__col a:hover { color: var(--brass); }
.lux-footer__bottom { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; padding-top: 1.5rem; border-top: 1px solid var(--hair); font-family: var(--mono); font-size: 0.72rem; color: var(--paper-faint); }
.lux-footer__bottom a:hover { color: var(--brass); }

/* ============================================================
   Case-study page
   ============================================================ */
.cs-hero { padding-top: clamp(3rem, 6vw, 5rem); padding-bottom: clamp(2rem, 4vw, 3.5rem); }
.cs-back { font-family: var(--mono); font-size: 0.74rem; color: var(--paper-faint); display: inline-flex; gap: 0.5rem; align-items: center; margin-bottom: 2rem; transition: color 0.3s, gap 0.3s; }
.cs-back:hover { color: var(--brass); gap: 0.8rem; }
.cs-hero__meta { display: flex; gap: 1.2rem; flex-wrap: wrap; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--paper-faint); margin-bottom: 1.5rem; }
.cs-hero__meta .brass { color: var(--brass); }
.cs-hero h1 { font-size: clamp(2.2rem, 6vw, 4.2rem); max-width: 18ch; margin-bottom: 1.4rem; }
.cs-hero .lede { max-width: 62ch; }

.cs-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden; margin-top: 3rem; }
@media (max-width: 760px) { .cs-facts { grid-template-columns: repeat(2, 1fr); } }
.cs-fact { background: var(--ink-1); padding: 1.4rem 1.5rem; }
.cs-fact dt { font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--paper-faint); margin-bottom: 0.5rem; }
.cs-fact dd { font-family: var(--serif); font-size: 1.15rem; color: var(--paper); }

.cs-body { display: grid; grid-template-columns: 1fr; gap: clamp(2.5rem, 5vw, 4rem); max-width: 760px; }
.cs-block h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); margin-bottom: 1.2rem; }
.cs-block h2 .no { font-family: var(--mono); font-size: 0.8rem; color: var(--brass); letter-spacing: 0.1em; margin-right: 0.8rem; vertical-align: middle; }
.cs-block p { color: var(--paper-dim); font-size: 1.08rem; line-height: 1.7; margin-bottom: 1rem; }
.cs-block p strong { color: var(--paper); font-weight: 600; }
.cs-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 0.9rem; margin-top: 0.5rem; }
.cs-list li { padding-left: 1.6rem; position: relative; color: var(--paper-dim); font-size: 1.02rem; line-height: 1.6; }
.cs-list li::before { content: "→"; position: absolute; left: 0; color: var(--brass); }
.cs-outcomes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--hair); border: 1px solid var(--hair); border-radius: var(--radius); overflow: hidden; }
@media (max-width: 600px) { .cs-outcomes { grid-template-columns: 1fr; } }
.cs-outcome { background: var(--ink-1); padding: 1.6rem; }
.cs-outcome strong { display: block; font-family: var(--serif); font-size: 1.5rem; color: var(--brass-bright); margin-bottom: 0.4rem; }
.cs-outcome span { color: var(--paper-dim); font-size: 0.95rem; }
.cs-note { font-family: var(--mono); font-size: 0.72rem; color: var(--paper-faint); border-left: 2px solid var(--brass-deep); padding-left: 1rem; line-height: 1.6; }

.cs-next { display: flex; justify-content: space-between; gap: 1rem; flex-wrap: wrap; align-items: center; border: 1px solid var(--hair); border-radius: var(--radius-lg); padding: 2rem clamp(1.5rem, 4vw, 3rem); background: var(--ink-1); }
.cs-next p { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--paper-faint); margin-bottom: 0.5rem; }
.cs-next h3 { font-size: 1.6rem; }

/* ---------- reveal ---------- */
[data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.8s var(--ease), transform 0.8s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: 0.08s; }
[data-reveal-delay="2"] { transition-delay: 0.16s; }
[data-reveal-delay="3"] { transition-delay: 0.24s; }

/* utilities */
.stack-sm { display: flex; flex-direction: column; }
.gap-1 { gap: 1rem; }
.mt-2 { margin-top: 2rem; }
.center { text-align: center; }
.maxw-prose { max-width: 60ch; }