/* ── BREADCRUMB ── */
.breadcrumb{padding:96px 64px 0}
.breadcrumb-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;gap:8px;font-size:12px;color:var(--subtle)}
.breadcrumb a{color:var(--muted);text-decoration:none;transition:color .15s}
.breadcrumb a:hover{color:var(--ink)}
.breadcrumb-sep{color:var(--rule)}

/* ── STUDY HERO ── */
.study-hero{padding:32px 64px 0;background:var(--page)}
.study-hero-inner{max-width:1200px;margin:0 auto}
.study-header{padding:56px 0 0;display:grid;grid-template-columns:2fr 1fr;gap:80px;align-items:start}
.study-tags{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.tag{font-size:10px;font-weight:500;background:var(--white);border:1px solid var(--rule);border-radius:3px;padding:4px 12px;color:var(--muted)}
.study-title{font-size:clamp(26px,3vw,40px);font-weight:600;line-height:1.15;letter-spacing:-.4px;color:var(--ink);margin-bottom:20px}
.study-title em{font-style:italic;color:var(--blue);font-weight:300}
.study-intro{font-size:16px;font-weight:300;color:var(--muted);line-height:1.8}
.study-meta-box{background:var(--white);border:1px solid var(--rule);border-radius:6px;padding:28px;display:flex;flex-direction:column;gap:20px}
.meta-label{font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--subtle);margin-bottom:4px}
.meta-value{font-size:13.5px;font-weight:500;color:var(--ink)}
.meta-divider{height:1px;background:var(--rule)}
.meta-list{list-style:none;display:flex;flex-direction:column;gap:6px;margin-top:4px}
.meta-list li{font-size:12px;color:var(--muted);font-weight:300;display:flex;align-items:flex-start;gap:7px;line-height:1.5}
.meta-list li::before{content:'';width:4px;height:4px;border-radius:50%;background:var(--subtle);flex-shrink:0;margin-top:6px}

/* ── METRICS STRIP ── */
.metrics-strip{background:var(--ink);margin:48px 0 0;border-radius:6px 6px 0 0;padding:48px;display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.metric-item{padding:0 32px 0 0;border-right:1px solid rgba(255,255,255,.07)}
.metric-item:last-child{border-right:none;padding-right:0;padding-left:32px}
.metric-item:not(:first-child):not(:last-child){padding:0 32px}
.metric-num{font-size:40px;font-weight:600;color:#fff;letter-spacing:-.5px;line-height:1;margin-bottom:6px}
.metric-num span{color:var(--blue)}
.metric-num .arrow{font-size:28px;color:rgba(255,255,255,.3);font-weight:300}
.metric-label{font-size:12px;color:rgba(255,255,255,.4);font-weight:300}

/* ── BODY ── */
.study-body{padding:80px 64px 100px;background:var(--white)}
.study-body-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr;gap:80px;align-items:start}
.content-section{margin-bottom:56px}
.content-section:last-child{margin-bottom:0}
.cs-eyebrow{font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--blue);margin-bottom:16px;display:flex;align-items:center;gap:8px}
.cs-eyebrow::before{content:'';width:12px;height:1.5px;background:var(--blue)}
.cs-h3{font-size:20px;font-weight:600;color:var(--ink);margin-bottom:16px;letter-spacing:-.2px}
.cs-p{font-size:14px;font-weight:300;color:var(--muted);line-height:1.85;margin-bottom:16px}
.cs-p:last-child{margin-bottom:0}
.cs-list{list-style:none;display:flex;flex-direction:column;gap:10px;margin-top:16px}
.cs-list li{font-size:13.5px;color:var(--muted);display:flex;align-items:flex-start;gap:10px;font-weight:300;line-height:1.6}
.cs-list li::before{content:'';width:5px;height:5px;border-radius:50%;background:var(--blue);flex-shrink:0;margin-top:8px}

/* ── QUOTE BLOCK ── */
.quote-block{background:var(--page);border-left:3px solid var(--blue);border-radius:0 6px 6px 0;padding:24px 28px;margin:32px 0}
.quote-text{font-size:15px;font-style:italic;font-weight:300;color:var(--ink);line-height:1.75;margin-bottom:12px}
.quote-attr{font-size:11px;font-weight:500;color:var(--muted);text-transform:uppercase;letter-spacing:.5px}

/* ── SIDEBAR ── */
.study-sidebar{display:flex;flex-direction:column;gap:20px;position:sticky;top:88px}
.sidebar-card{background:var(--page);border:1px solid var(--rule);border-radius:6px;padding:24px}
.sidebar-label{font-size:9px;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--subtle);margin-bottom:16px}
.sidebar-features{list-style:none;display:flex;flex-direction:column;gap:8px}
.sidebar-features li{font-size:12.5px;color:var(--muted);display:flex;align-items:center;gap:8px;font-weight:300}
.sf-check{color:var(--blue);font-weight:600;font-size:13px;flex-shrink:0}
.sprint-count{font-size:28px;font-weight:600;color:var(--ink);letter-spacing:-.3px;margin-bottom:4px}
.sprint-sub{font-size:12px;color:var(--muted);font-weight:300}
.sidebar-cta{background:var(--blue);color:#fff;padding:13px 20px;border-radius:4px;font-weight:600;font-size:13px;text-decoration:none;transition:all .15s;display:block;text-align:center;font-family:'Poppins',sans-serif}
.sidebar-cta:hover{background:#0029cc;box-shadow:0 4px 20px rgba(0,55,255,.25)}

/* ── BACK / NEXT ── */
.nav-strip{background:var(--page);border-top:1px solid var(--rule);padding:40px 64px}
.nav-strip-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between}
.nav-strip a{font-size:13px;font-weight:500;color:var(--muted);text-decoration:none;display:flex;align-items:center;gap:8px;transition:color .15s}
.nav-strip a:hover{color:var(--ink)}

/* ── RESPONSIVE ── */
@media(max-width:1024px){
  .breadcrumb,.study-hero,.study-body,.nav-strip{padding-left:32px;padding-right:32px}
  .study-header{grid-template-columns:1fr}
  .metrics-strip{grid-template-columns:1fr 1fr;gap:24px}
  .metric-item{border:none;padding:0 !important}
  .study-body-inner{grid-template-columns:1fr}
  .study-sidebar{position:static}
}
@media(max-width:768px){
  .metrics-strip{grid-template-columns:1fr 1fr;padding:32px}
  .nav-strip-inner{flex-direction:column;gap:16px}
}