main { padding-top: var(--nav-h); }
.swatch.active { background: transparent !important; }

/* ── Hero ── */
.cs-hero { min-height: 52vh; display: flex; align-items: flex-end; padding-top: var(--nav-h); position: relative; overflow: hidden; padding-bottom: 72px; }
.cs-back { display: inline-flex; align-items: center; gap: 8px; font-size: 10px; letter-spacing: 2.5px; text-transform: uppercase; font-weight: 600; color: var(--text-2); text-decoration: none; margin-bottom: 24px; display: block; transition: color .2s; }
.cs-back svg { transition: transform .2s; display: inline-block; vertical-align: middle; margin-right: 4px; }
.cs-back:hover { color: var(--accent); }
.cs-back:hover svg { transform: translateX(-3px); }
.page-title { font-family: 'Bebas Neue', sans-serif; font-size: clamp(64px, 10vw, 140px); line-height: 0.9; letter-spacing: 2px; background: linear-gradient(140deg, #ffffff 0%, var(--accent) 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; animation: wipe-reveal 1.2s cubic-bezier(0.77,0,0.18,1) forwards; }
.page-subtitle { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 300; font-size: clamp(18px, 2.2vw, 24px); color: var(--text-2); margin-top: 20px; max-width: 600px; animation: fade-up 0.8s ease 0.8s both; }
.cs-hero-metrics { display: flex; gap: 0; margin-top: 32px; border: 1px solid rgba(255,255,255,0.07); border-radius: var(--r-md); overflow: hidden; animation: fade-up 0.8s ease 1s both; display: inline-flex; }
.cs-hero-metric { padding: 12px 20px; border-right: 1px solid rgba(255,255,255,0.07); }
.cs-hero-metric:last-child { border-right: none; }
.metric-value { font-family: 'Bebas Neue', sans-serif; font-size: 36px; letter-spacing: 1px; color: var(--accent); line-height: 1; display: block; margin-bottom: 4px; text-shadow: 0 0 20px var(--accent-glow); }
.metric-label { font-size: 10px; letter-spacing: 2px; text-transform: uppercase; color: var(--text-2); font-weight: 500; line-height: 1.2; display: inline-block; max-width: 90px; }
.cs-hero-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 24px; animation: fade-up 0.8s ease 1.1s both; }

/* ── Split Hero (v2 template) ── */
.cs-hero-split-grid { display: grid; grid-template-columns: 1fr auto; gap: 56px; align-items: center; position: relative; z-index: 1; }
.cs-meta-card { width: 100%; max-width: 340px; justify-self: end; background: var(--glass); border: 1px solid rgba(255,255,255,0.08); border-radius: var(--r-lg); box-shadow: var(--shadow-card); overflow: hidden; animation: fade-up 0.8s ease 0.9s both; }
.cs-meta-metrics { display: grid; grid-template-columns: 1fr 1fr; }
.cs-meta-metric { padding: 18px 16px; border-right: 1px solid rgba(255,255,255,0.07); border-bottom: 1px solid rgba(255,255,255,0.08); }
.cs-meta-metric:last-child { border-right: none; }
.cs-meta-facts { padding: 16px 20px 18px; display: flex; flex-direction: column; gap: 12px; }
.cs-meta-row { display: grid; grid-template-columns: 104px 1fr; align-items: baseline; gap: 10px; font-size: 12.5px; }
.cs-meta-row--tools { grid-template-columns: 1fr; row-gap: 8px; border-top: 1px solid rgba(255,255,255,0.07); padding-top: 14px; margin-top: 2px; }
.cs-meta-label { font-size: 9px; font-weight: 700; letter-spacing: 1.6px; text-transform: uppercase; color: var(--accent); opacity: .85; white-space: nowrap; }
.cs-meta-value { color: var(--text-2); text-align: left; }
.cs-meta-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 1px; }
.cs-tag { padding: 3px 10px; background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.07); font-size: 11px; color: var(--text-2); border-radius: var(--r-xs); font-weight: 300; }
@media(max-width:900px) {
  .cs-hero-split-grid { grid-template-columns: 1fr; }
  .cs-meta-card { max-width: 100%; justify-self: stretch; }
}

/* ── Facts Panel ── */
.cs-facts { border-top: 1px solid rgba(255,255,255,0.07); border-bottom: 1px solid rgba(255,255,255,0.07); background: rgba(255,255,255,0.015); position: relative; z-index: 1; }
.cs-facts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.cs-fact { padding: 22px 24px; border-left: 1px solid rgba(255,255,255,0.07); }
.cs-fact:first-child { border-left: none; }
.cs-fact-label { font-size: 9px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); opacity: .8; margin-bottom: 7px; display: block; }
.cs-fact-value { font-size: 13px; color: var(--text-2); line-height: 1.55; }
.cs-fact-chips { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 2px; }

/* ── Process Strip ── */
.cs-process { padding: 56px 0 8px; }
.cs-process-label { font-size: 9px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--text-3); text-align: center; margin-bottom: 32px; }
.cs-process-track { position: relative; display: flex; gap: 4px; }
.cs-process-track::before { content: ''; position: absolute; top: 15px; left: 0; right: 0; height: 1px; background: rgba(255,255,255,0.09); }
.cs-process-step { position: relative; flex: 1; min-width: 96px; display: flex; flex-direction: column; align-items: center; text-align: center; text-decoration: none; color: inherit; padding: 0 6px; }
.cs-process-dot { width: 30px; height: 30px; border-radius: 50%; background: var(--bg); border: 1.5px solid rgba(255,255,255,0.18); display: flex; align-items: center; justify-content: center; font-family: 'Bebas Neue', sans-serif; font-size: 13px; color: var(--text-2); z-index: 1; transition: border-color .2s, color .2s, box-shadow .2s; flex-shrink: 0; }
.cs-process-step:hover .cs-process-dot { border-color: var(--accent); color: var(--accent); }
.cs-process-step.is-pivot .cs-process-dot { border-color: var(--accent); background: var(--accent); color: var(--bg); box-shadow: 0 0 16px var(--accent-glow); }
.cs-process-step-label { font-size: 11px; font-weight: 600; color: var(--text); margin-top: 12px; line-height: 1.3; }
.cs-process-step.is-pivot .cs-process-step-label { color: var(--accent); }
.cs-process-step-sub { font-size: 10px; color: var(--text-3); margin-top: 3px; line-height: 1.3; }
@media(max-width:800px) {
  .cs-process-track { flex-direction: column; gap: 22px; }
  .cs-process-track::before { top: 0; bottom: 0; left: 15px; right: auto; width: 1px; height: auto; }
  .cs-process-step { flex-direction: row; text-align: left; align-items: flex-start; min-width: 0; padding: 0; }
  .cs-process-dot { margin-right: 14px; }
  .cs-process-step-label, .cs-process-step-sub { margin-top: 1px; }
}

/* ── Judgment / Process-Shift Callout ── */
.cs-callout { margin: 24px 0 20px; padding-left: 20px; border-left: 2px solid var(--accent); }
.cs-callout-label { display: flex; align-items: center; gap: 7px; font-size: 10px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
.cs-panel-text .cs-callout p { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: clamp(16px, 1.6vw, 19px); line-height: 1.7; color: var(--text); margin: 0; }
.cs-panel-text .cs-callout p + p { margin-top: 10px; }

/* ── Research Findings List ── */
.cs-method-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: 14px 0 18px; }
.cs-findings { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.cs-findings li { display: flex; gap: 12px; font-size: 13px; color: var(--text-2); line-height: 1.6; }
.cs-findings-num { flex-shrink: 0; width: 20px; height: 20px; margin-top: 1px; border-radius: 50%; border: 1px solid rgba(212,175,55,0.35); color: var(--accent); font-size: 10px; font-weight: 700; display: flex; align-items: center; justify-content: center; }

/* ── Case Study Panels ── */
.cs-panels [id] { scroll-margin-top: calc(var(--nav-h) + 24px); }
.cs-panel { padding: 96px 0; }
.cs-panel-alt { background: rgba(255,255,255,0.018); }
.cs-panel-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: start; }

/* Full-width text interlude — breaks the L/R, R/L rhythm between panels */
.cs-break { padding: 120px 0; text-align: left; }
.cs-break-inner { max-width: 680px; margin: 0; opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.cs-panel.cs-visible .cs-break-inner { opacity: 1; transform: translateY(0); }
.cs-break .cs-break-lede { font-family: 'Cormorant Garamond', serif; font-style: italic; font-weight: 400; font-size: clamp(17px, 1.8vw, 20px); line-height: 1.7; color: var(--text); margin-bottom: 14px; }
.cs-break p { font-size: 14px; line-height: 1.82; color: var(--text-2); margin-bottom: 0; }
.cs-break-decisions { display: flex; gap: 20px; justify-content: flex-start; flex-wrap: wrap; margin-top: 36px; }
.cs-break-decision { flex: 1 1 240px; max-width: 270px; background: var(--glass); border: 1px solid rgba(255,255,255,0.06); border-radius: var(--r-md); padding: 20px; text-align: left; }
.cs-break-decision-num { font-family: 'Bebas Neue', sans-serif; font-size: 22px; letter-spacing: 1px; color: var(--accent); text-shadow: 0 0 16px var(--accent-glow); display: block; margin-bottom: 8px; }
.cs-break-decision p { font-size: 13px; color: var(--text-2); line-height: 1.6; text-align: left; margin: 0; }
@media(max-width:600px) { .cs-break { padding: 80px 0; } }
@media(min-width:761px) {
  .cs-break-decisions--triple { flex-wrap: nowrap; }
  .cs-break-decisions--triple .cs-break-decision { flex: 1 1 0; max-width: none; min-width: 0; }
}

/* Text column */
.cs-eyebrow { font-size: 9px; font-weight: 700; letter-spacing: 4px; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; display: block; }
.cs-heading { font-family: 'Inter', sans-serif; font-size: clamp(22px, 2.5vw, 32px); font-weight: 700; letter-spacing: -0.4px; color: var(--text); line-height: 1.2; margin-bottom: 20px; }
.cs-panel-text p { font-size: 14px; line-height: 1.82; color: var(--text-2); margin-bottom: 12px; }
.cs-panel-text p:last-child { margin-bottom: 0; }
.cs-panel-text h4 { font-size: 11px; font-weight: 700; color: var(--text); margin: 20px 0 10px; letter-spacing: 2px; text-transform: uppercase; }

/* Image frame */
.cs-img-frame { border-radius: var(--r-lg); overflow: hidden; border: 1px solid rgba(255,255,255,0.08); box-shadow: var(--shadow-card); background: rgba(255,255,255,0.02); cursor: zoom-in; transition: box-shadow .2s ease; }
.cs-img-frame:hover { box-shadow: 0 0 0 2px var(--accent), var(--shadow-card); }
.cs-img-frame img { width: 100%; display: block; }
.cs-caption { font-size: 12px; color: var(--text-3); font-style: italic; margin-top: 12px; line-height: 1.5; }

/* Thumbnail strip */
.cs-thumb-strip { display: flex; gap: 8px; margin-top: 10px; }
.cs-thumb { width: 60px; height: 42px; padding: 0; opacity: .7; border: 1px solid rgba(255,255,255,0.1); border-radius: 4px; overflow: hidden; cursor: pointer; background: rgba(0,0,0,0.3); transition: border-color .2s; }
.cs-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cs-thumb.active { border-color: var(--accent); opacity: 1; }

/* Stacked media */
.cs-media-stack { display: flex; flex-direction: column; gap: 28px; }
.cs-media-label { font-size: 9px; font-weight: 700; letter-spacing: 3px; text-transform: uppercase; color: var(--accent); opacity: 0.65; margin-bottom: 10px; display: block; }

/* Stat cards */
.stat-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 24px 0; }
.stat-card { background: var(--glass); border: 1px solid rgba(255,255,255,0.06); border-radius: var(--r-md); padding: 16px; }
.stat-card-value { font-family: 'Bebas Neue', sans-serif; font-size: 32px; color: var(--accent); line-height: 1; display: block; margin-bottom: 10px; text-shadow: 0 0 16px var(--accent-glow); }
.stat-card-label { font-size: 13px; color: var(--text-2); line-height: 1.5; }

/* Decisions list */
.decisions-list { list-style: none; margin-top: 14px; display: flex; flex-direction: column; gap: 8px; }
.decisions-list li { font-size: 13px; color: var(--text-2); padding-left: 16px; position: relative; line-height: 1.5; }
.decisions-list li::before { content: '▸'; position: absolute; left: 0; color: var(--accent); font-size: 10px; top: 3px; }

/* Tool chips */
.tool-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.tool-chip { font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text); border: 1px solid var(--border-2); padding: 4px 10px; font-weight: 500; border-radius: 2px; }

/* ── Flow Diagram ── */
.cs-diagram { background: var(--glass); border: 1px solid rgba(255,255,255,0.07); border-radius: var(--r-lg); padding: 24px; }
.cs-flow { display: flex; flex-direction: column; }
.cs-flow-node { background: rgba(255,255,255,0.04); border: 1px solid rgba(255,255,255,0.1); border-radius: var(--r-sm); padding: 10px 14px; font-size: 12px; color: var(--text); font-weight: 500; line-height: 1.3; }
.cs-flow-node.cs-node-accent { border-color: rgba(212,175,55,0.35); color: var(--accent); background: rgba(212,175,55,0.06); }
.cs-flow-node.cs-node-dim { color: var(--text-2); }
.cs-flow-node-sub { font-size: 10px; color: var(--text-2); margin-top: 3px; font-weight: 400; }
.cs-node-accent .cs-flow-node-sub { color: rgba(212,175,55,0.55); }
.cs-flow-arrow { position: relative; display: flex; align-items: center; justify-content: center; height: 24px; font-size: 0; color: transparent; }
.cs-flow-arrow::before {
  content: '';
  position: absolute;
  top: 0; bottom: 0; left: 50%;
  width: 2px;
  transform: translateX(-50%);
  background: repeating-linear-gradient(to bottom, var(--accent) 0, var(--accent) 4px, transparent 4px, transparent 9px);
  background-size: 2px 18px;
  opacity: 0.55;
  animation: cs-flow-pulse 0.9s linear infinite;
}
@keyframes cs-flow-pulse { to { background-position: 0 18px; } }

.cs-flow-split { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }

/* Branch connector — flow line splitting toward multiple outcomes */
.cs-flow-branch { position: relative; height: 44px; }
.cs-flow-branch svg { display: block; width: 100%; height: 100%; overflow: visible; }
.cs-branch-stem, .cs-branch-line { fill: none; stroke: var(--accent); vector-effect: non-scaling-stroke; }
.cs-branch-stem { stroke-width: 2; opacity: 0.22; }
.cs-branch-line { stroke-width: 2; stroke-dasharray: 4 7; opacity: 0.75; animation: cs-branch-flow 1.2s linear infinite; }
.cs-branch-dot {
  position: absolute;
  top: calc(14 / 44 * 100%); left: 50%;
  width: 5px; height: 5px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.8;
  box-shadow: 0 0 6px var(--accent-glow);
}
@keyframes cs-branch-flow { to { stroke-dashoffset: -22; } }
@media(max-width:900px) {
  .cs-branch-line { opacity: 0; animation: none; }
}

/* ── Routing Diagram ── */
.cs-routing { background: var(--glass); border: 1px solid rgba(255,255,255,0.07); border-radius: var(--r-lg); padding: 24px; }
.cs-routing-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.cs-routing-row:last-of-type { margin-bottom: 0; }
.cs-routing-task { font-size: 12px; color: var(--text-2); flex: 1; }
.cs-routing-arrow { color: var(--accent); opacity: 0.35; font-size: 14px; flex-shrink: 0; }
.cs-routing-model { font-size: 9px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; padding: 4px 10px; border-radius: 2px; border: 1px solid; flex-shrink: 0; }
.cs-model-sonnet { color: var(--accent); border-color: rgba(212,175,55,0.4); background: rgba(212,175,55,0.07); }
.cs-model-haiku { color: var(--text-2); border-color: rgba(255,255,255,0.12); background: rgba(255,255,255,0.03); }
.cs-routing-result { margin-top: 16px; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.06); display: flex; justify-content: space-between; align-items: center; }
.cs-routing-result-label { font-size: 10px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--text-2); }
.cs-routing-result-val { font-family: 'Bebas Neue', sans-serif; font-size: 28px; color: var(--accent); text-shadow: 0 0 12px var(--accent-glow); line-height: 1; }

/* ── Panel animation ── */
.cs-panel-text, .cs-panel-media { opacity: 0; transform: translateY(14px); transition: opacity .55s ease, transform .55s ease; }
.cs-panel-media { transition-delay: .08s; }
.cs-panel.cs-visible .cs-panel-text, .cs-panel.cs-visible .cs-panel-media { opacity: 1; transform: translateY(0); }

/* ── Lightbox ── */
.lb-overlay { position: fixed; inset: 0; z-index: 9000; background: rgba(0,0,0,0.88); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); display: flex; align-items: center; justify-content: center; opacity: 0; pointer-events: none; visibility: hidden; transition: opacity .22s ease, visibility 0s .22s; cursor: zoom-out; }
.lb-overlay.lb-open { opacity: 1; pointer-events: all; visibility: visible; transition: opacity .22s ease, visibility 0s 0s; }
.lb-img-wrap { position: relative; transition: transform .3s cubic-bezier(.34,1.56,.64,1); transform: scale(0.93); }
.lb-overlay.lb-open .lb-img-wrap { transform: scale(1); }
.lb-overlay img { display: block; width: auto; height: auto; max-height: 90vh; max-width: 90vw; border-radius: var(--r-lg); border: 1px solid rgba(255,255,255,0.08); box-shadow: 0 32px 96px rgba(0,0,0,0.7); }
.lb-close { position: absolute; top: -14px; right: -14px; width: 32px; height: 32px; border-radius: 50%; background: rgba(30,30,40,0.95); border: 1px solid rgba(255,255,255,0.15); color: rgba(255,255,255,0.7); font-size: 15px; display: flex; align-items: center; justify-content: center; cursor: pointer; line-height: 1; transition: background .15s, color .15s; }
.lb-close:hover { background: rgba(60,60,70,0.98); color: #fff; }
.lb-nav { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(20,20,30,0.7); border: 1px solid rgba(255,255,255,0.12); color: rgba(255,255,255,0.75); font-size: 28px; line-height: 1; width: 48px; height: 64px; border-radius: var(--r-sm); display: flex; align-items: center; justify-content: center; cursor: pointer; z-index: 1; transition: background .15s, color .15s; }
.lb-nav:hover { background: rgba(40,40,55,0.95); color: #fff; }
.lb-nav[hidden] { display: none; }
.lb-prev { left: 24px; }
.lb-next { right: 24px; }

/* ── Mobile ── */
@media(max-width:900px) {
  .cs-panel { padding: 64px 0; }
  .cs-panel-inner { grid-template-columns: 1fr; gap: 40px; }
  .cs-panel-media { order: 2; }
  .cs-panel-text { order: 1; }
  .cs-hero-metrics { flex-wrap: wrap; }
  .cs-flow-split { grid-template-columns: 1fr; }
}
@media(max-width:560px) {
  .stat-cards { grid-template-columns: 1fr 1fr; }
}
@media(max-width:640px) {
  .cs-facts-grid { grid-template-columns: 1fr 1fr; }
  .cs-fact { border-left: none; border-top: 1px solid rgba(255,255,255,0.07); }
  .cs-fact:nth-child(-n+2) { border-top: none; }
}
.cs-sources { font-size: 11px; color: var(--text-3); margin-top: 10px; line-height: 1.6; }
.cs-sources a { color: var(--text-3); text-decoration: underline; text-underline-offset: 2px; }
.cs-sources a:hover { color: var(--text-2); }
.cs-sources a:visited { color: var(--text-3); }

/* ── Act Divider Banners ── */
.cs-act-banner {
  position: relative;
  padding: 72px 0 28px;
  text-align: center;
}
.cs-act-banner-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity .5s ease, transform .5s ease;
}
.cs-act-banner.cs-visible .cs-act-banner-body {
  opacity: 1;
  transform: translateY(0);
}
.cs-act-num {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(52px, 6.5vw, 72px);
  line-height: 0.88;
  color: var(--accent);
  letter-spacing: 5px;
  text-shadow: 0 0 40px var(--accent-glow);
}
.cs-act-banner-title {
  font-family: 'Bebas Neue', sans-serif;
  font-size: clamp(12px, 1.4vw, 15px);
  letter-spacing: 7px;
  text-transform: uppercase;
  color: var(--text-2);
  margin: 4px 0 12px;
}
.cs-act-banner-rule {
  width: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
  transition: width 0.65s cubic-bezier(0.22, 1, 0.36, 1) 0.25s;
}
.cs-act-banner.cs-visible .cs-act-banner-rule { width: 80px; }
@media(max-width:900px) { .cs-act-banner { padding: 48px 0 24px; } }