/* shared scaffolding */
.b4-hero{position:relative;background:var(--mbm-red-700);color:#fff;overflow:hidden;padding:64px 0 88px}
.b4-hero::before{content:"";position:absolute;inset:0;background-image:radial-gradient(circle at 12% 22%, rgba(255,255,255,.07) 0, transparent 171px),radial-gradient(circle at 82% 70%, rgba(255,255,255,.06) 0, transparent 247px),radial-gradient(circle at 50% 95%, rgba(255,255,255,.05) 0, transparent 152px);pointer-events:none}
.b4-hero-inner{max-width:1100px;margin:0 auto;padding:0 24px;position:relative;display:grid;grid-template-columns:1.3fr 1fr;gap:48px;align-items:center}
.b4-eyebrow-w{display:inline-block;font:700 12px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.18em;color:#F2C7C7;border:1px solid rgba(255,255,255,.4);padding:5px 12px;border-radius:999px;margin-bottom:16px}
.b4-h1{font:800 62px/1.04 var(--mbm-font-sans);letter-spacing:-.025em;color:#fff;margin:0 0 14px;text-wrap:balance}
.b4-h1 sup{font-size:.5em;vertical-align:super;font-weight:600;opacity:.85}
.b4-tag{font:400 22px/1.45 var(--mbm-font-sans);color:#F2C7C7;max-width:520px;margin:0 0 28px}
.b4-hero-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:0;padding-top:24px;border-top:1px solid rgba(255,255,255,.18)}
.b4-hero-stats > div{padding:8px 14px;border-left:1px solid rgba(255,255,255,.12)}
.b4-hero-stats > div:first-child{border-left:0;padding-left:0}
.b4-hero-stats b{display:block;font:800 26px var(--mbm-font-sans);color:#fff;letter-spacing:-.01em}
.b4-hero-stats span{font:500 12px var(--mbm-font-sans);color:#F2C7C7;text-transform:uppercase;letter-spacing:.12em;margin-top:4px;display:block}

/* Map preview (hero right) */
.b4-mapcard{background:#fff;border-radius:8px;padding:16px;box-shadow:0 16px 50px rgba(0,0,0,.3);transform:rotate(2deg)}
.b4-mapcard-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:10px;color:var(--mbm-ink-2)}
.b4-mapcard-head .dots{display:flex;gap:5px}
.b4-mapcard-head .dots span{width:9px;height:9px;border-radius:999px;background:#E5E8EC}
.b4-mapcard-head .tit{font:700 11px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.14em;color:var(--mbm-ink-3)}
.b4-mapcard-svg{width:100%;display:block;aspect-ratio:1.5;border-radius:4px;overflow:hidden}
.b4-mapcard-meta{display:flex;justify-content:space-between;margin-top:10px;font:600 11px var(--mbm-font-sans);color:var(--mbm-ink-3)}
.b4-mapcard-meta .legend{display:flex;align-items:center;gap:6px}
.b4-mapcard-meta .legend i{width:10px;height:10px;border-radius:2px;background:var(--mbm-green-600);display:block}
.b4-hero-bottom{position:absolute;bottom:0;left:0;right:0;height:6px;background:var(--mbm-green-600)}

/* Section base */
.b4-section{max-width:1100px;margin:0 auto;padding:88px 24px}
.b4-section.narrow{max-width:920px}
.b4-section h2{font:800 42px/1.12 var(--mbm-font-sans);color:var(--mbm-ink);letter-spacing:-.018em;margin:0 0 16px;text-wrap:balance}
.b4-section p{font:400 18px/1.7 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0 0 16px;max-width:680px}
.b4-section p.lead{font-size:21px;color:var(--mbm-ink);font-weight:500}

/* Story */
.b4-story-card{background:var(--mbm-bg-alt);border-left:4px solid var(--mbm-red-700);padding:28px 32px;border-radius:0 6px 6px 0;margin:32px 0}
.b4-story-card .case-id{font:700 11px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.18em;color:var(--mbm-red-700);margin-bottom:6px}
.b4-story-card h3{font:800 22px var(--mbm-font-sans);color:var(--mbm-ink);margin:0 0 10px;letter-spacing:-.01em}
.b4-story-card p{font:400 17px/1.65 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0 0 10px;max-width:none}
.b4-story-criteria{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.b4-story-criteria .chip{background:#fff;border:1px solid var(--mbm-line);padding:6px 12px;border-radius:999px;font:600 13px var(--mbm-font-sans);color:var(--mbm-ink);display:inline-flex;align-items:center;gap:6px}
.b4-story-criteria .chip::before{content:"";width:6px;height:6px;background:var(--mbm-green-600);border-radius:999px}
.b4-question{font:800 28px/1.3 var(--mbm-font-sans);color:var(--mbm-red-700);margin:24px 0 0;letter-spacing:-.01em;text-wrap:balance}
.b4-answer-note{margin-top:16px;font:500 16px/1.55 var(--mbm-font-sans);color:var(--mbm-ink-2)}

/* What b4p is — 2 modes */
.b4-modes{background:var(--mbm-bg-alt);padding:96px 0;border-top:1px solid var(--mbm-line);border-bottom:1px solid var(--mbm-line)}
.b4-modes-inner{max-width:1100px;margin:0 auto;padding:0 24px}
.b4-modes-head{max-width:680px;margin:0 0 40px}
.b4-modes-head h2{font:800 38px/1.15 var(--mbm-font-sans);color:var(--mbm-ink);letter-spacing:-.015em;margin:0 0 14px;text-wrap:balance}
.b4-modes-head p{font:400 17px/1.55 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0;max-width:580px}
.b4-modes-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.b4-mode{background:#fff;border:1px solid var(--mbm-line);border-radius:6px;padding:28px;display:flex;flex-direction:column;gap:12px}
.b4-mode.featured{background:var(--mbm-red-700);color:#fff;border:0;box-shadow:0 12px 32px rgba(165,24,34,.18)}
.b4-mode-tag{display:inline-flex;align-items:center;gap:6px;font:700 11px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.14em;color:var(--mbm-red-700);align-self:flex-start;background:var(--mbm-red-100);padding:4px 10px;border-radius:999px}
.b4-mode.featured .b4-mode-tag{color:#fff;background:rgba(255,255,255,.18)}
.b4-mode h3{font:800 24px var(--mbm-font-sans);color:var(--mbm-ink);margin:0;letter-spacing:-.01em}
.b4-mode.featured h3{color:#fff}
.b4-mode p{font:400 15px/1.6 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0;max-width:none}
.b4-mode.featured p{color:#F2C7C7}
.b4-mode ul{list-style:none;padding:0;margin:6px 0;display:grid;gap:8px}
.b4-mode ul li{display:flex;gap:10px;align-items:flex-start;font:500 14px/1.5 var(--mbm-font-sans);color:var(--mbm-ink-2)}
.b4-mode.featured ul li{color:#F2C7C7}
.b4-mode ul li::before{content:"";width:14px;height:14px;border-radius:999px;background:var(--mbm-green-600);flex-shrink:0;margin-top:2px;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='4' stroke-linecap='round'><path d='M5 12l5 5L20 7'/></svg>");background-size:10px;background-position:center;background-repeat:no-repeat}
.b4-mode-cta{margin-top:auto;font:700 14px var(--mbm-font-sans);color:var(--mbm-red-700);display:inline-flex;align-items:center;gap:6px;padding-top:6px}
.b4-mode.featured .b4-mode-cta{color:#fff}

/* big numbers (b4p study credentials) */
.b4-creds{background:var(--mbm-ink);color:#fff;padding:80px 0;position:relative;overflow:hidden}
.b4-creds::before{content:"b4p";position:absolute;right:-20px;bottom:-90px;font:800 360px var(--mbm-font-sans);color:rgba(255,255,255,.04);line-height:1;letter-spacing:-.06em;pointer-events:none}
.b4-creds-inner{max-width:1100px;margin:0 auto;padding:0 24px;display:grid;grid-template-columns:1fr 1.3fr;gap:64px;align-items:start;position:relative}
.b4-creds h2{color:#fff;font:800 38px/1.15 var(--mbm-font-sans);letter-spacing:-.015em;margin:0 0 16px;text-wrap:balance}
.b4-creds p{color:rgba(255,255,255,.78);font:400 17px/1.65 var(--mbm-font-sans);margin:0 0 14px}
.b4-creds-byline{margin-top:24px;font:600 13px var(--mbm-font-sans);color:rgba(255,255,255,.5);text-transform:uppercase;letter-spacing:.12em}
.b4-creds-byline a{color:var(--mbm-green-500);text-decoration:none}
.b4-num-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.b4-num{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.1);border-radius:6px;padding:24px}
.b4-num.big{grid-column:1/-1;background:linear-gradient(135deg,rgba(165,24,34,.4),rgba(165,24,34,.15));border-color:rgba(255,255,255,.18)}
.b4-num b{display:block;font:800 56px/1 var(--mbm-font-sans);color:#fff;letter-spacing:-.025em}
.b4-num.big b{font-size:88px}
.b4-num span{display:block;font:600 13px var(--mbm-font-sans);color:#F2C7C7;margin-top:8px;text-transform:uppercase;letter-spacing:.12em}
.b4-num small{display:block;font:400 13px/1.45 var(--mbm-font-sans);color:rgba(255,255,255,.6);margin-top:6px}

/* How it works — interactive locator mock */
.b4-how{padding:96px 0}
.b4-how-inner{max-width:1100px;margin:0 auto;padding:0 24px}
.b4-how-head{max-width:680px;margin:0 0 36px}
.b4-how-head h2{font:800 38px/1.15 var(--mbm-font-sans);color:var(--mbm-ink);letter-spacing:-.015em;margin:0 0 14px;text-wrap:balance}
.b4-how-head p{font:400 17px/1.55 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0;max-width:580px}
.b4-flow{display:grid;grid-template-columns:1.1fr 32px 1fr 32px .9fr;gap:0;align-items:stretch;margin-bottom:32px}
.b4-flow-card{background:#fff;border:1px solid var(--mbm-line);border-radius:6px;padding:22px;display:flex;flex-direction:column;gap:10px;min-height:340px}
.b4-flow-arrow{display:grid;place-items:center;color:var(--mbm-red-700)}
.b4-flow-arrow i{font-size:22px;line-height:1}
.b4-flow-step{font:800 12px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.18em;color:var(--mbm-red-700)}
.b4-flow-card h3{font:800 18px var(--mbm-font-sans);color:var(--mbm-ink);margin:0;letter-spacing:-.01em}
/* Criteria panel */
.b4-crit-group{font:700 11px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.12em;color:var(--mbm-ink-3);margin-top:8px}
.b4-crit-row{display:flex;align-items:center;gap:10px;padding:6px 0;font:500 14px var(--mbm-font-sans);color:var(--mbm-ink-2);cursor:pointer;border-radius:4px}
.b4-crit-row:hover{color:var(--mbm-ink)}
.b4-crit-row.on{color:var(--mbm-ink);font-weight:700}
.b4-crit-check{width:18px;height:18px;border:1.5px solid var(--mbm-line-2);border-radius:3px;flex-shrink:0;display:grid;place-items:center;transition:all .15s}
.b4-crit-row.on .b4-crit-check{background:var(--mbm-green-600);border-color:var(--mbm-green-600)}
.b4-crit-row.on .b4-crit-check svg{width:12px;height:12px;color:#fff}
/* Output panel */
.b4-out{display:grid;gap:10px}
.b4-out-row{display:flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--mbm-line);border-radius:6px;cursor:pointer;background:#fff;transition:all .15s}
.b4-out-row.on{border-color:var(--mbm-red-700);background:var(--mbm-red-100)}
.b4-out-row.on .b4-out-radio{border-color:var(--mbm-red-700)}
.b4-out-row.on .b4-out-radio::after{content:"";width:8px;height:8px;background:var(--mbm-red-700);border-radius:999px}
.b4-out-radio{width:16px;height:16px;border:1.5px solid var(--mbm-line-2);border-radius:999px;flex-shrink:0;display:grid;place-items:center}
.b4-out-row .out-t{font:700 14px var(--mbm-font-sans);color:var(--mbm-ink)}
.b4-out-row .out-d{font:400 12px/1.4 var(--mbm-font-sans);color:var(--mbm-ink-3);margin-top:2px}
/* Result panel — map */
.b4-result{background:linear-gradient(135deg,#F4EFE8,#E5E8EC);border-radius:4px;flex:1;position:relative;overflow:hidden;min-height:200px;margin-top:6px}
.b4-result-svg{position:absolute;inset:0;width:100%;height:100%}
.b4-result-meta{margin-top:8px;display:flex;justify-content:space-between;align-items:center;font:600 11px var(--mbm-font-sans);color:var(--mbm-ink-3);text-transform:uppercase;letter-spacing:.1em}
.b4-result-meta .ok{color:var(--mbm-green-600);display:inline-flex;align-items:center;gap:4px}
.b4-result-meta .ok::before{content:"";width:8px;height:8px;background:var(--mbm-green-600);border-radius:999px}
.b4-flow-foot{text-align:center;font:500 13px var(--mbm-font-sans);color:var(--mbm-ink-3);margin-top:12px}
.b4-flow-foot b{color:var(--mbm-red-700)}

/* Use cases */
.b4-uses{background:var(--mbm-bg-alt);padding:96px 0;border-top:1px solid var(--mbm-line)}
.b4-uses-inner{max-width:1100px;margin:0 auto;padding:0 24px}
.b4-uses-head{display:flex;justify-content:space-between;align-items:flex-end;gap:32px;flex-wrap:wrap;margin-bottom:32px}
.b4-uses-head h2{font:800 38px/1.15 var(--mbm-font-sans);color:var(--mbm-ink);letter-spacing:-.015em;margin:0;max-width:520px;text-wrap:balance}
.b4-uses-head p{font:400 16px/1.55 var(--mbm-font-sans);color:var(--mbm-ink-2);max-width:360px;margin:0}
.b4-uses-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.b4-use{background:#fff;border:1px solid var(--mbm-line);border-radius:6px;padding:24px;display:flex;flex-direction:column;gap:10px;transition:all .2s}
.b4-use:hover{transform:translateY(-2px);box-shadow:0 12px 32px rgba(31,36,40,.10)}
.b4-use-icon{width:42px;height:42px;border-radius:6px;background:var(--mbm-red-100);color:var(--mbm-red-700);display:grid;place-items:center}
.b4-use-icon i{font-size:20px;line-height:1}
.b4-use h3{font:800 16px var(--mbm-font-sans);color:var(--mbm-ink);margin:0;text-wrap:balance}
.b4-use p{font:500 14px/1.5 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0;font-style:italic;max-width:none}

/* Sinus vs b4p comparison */
.b4-vs{padding:96px 0}
.b4-vs-inner{max-width:1100px;margin:0 auto;padding:0 24px}
.b4-vs-head{max-width:680px;margin:0 0 36px}
.b4-vs-head h2{font:800 38px/1.15 var(--mbm-font-sans);color:var(--mbm-ink);letter-spacing:-.015em;margin:0 0 14px;text-wrap:balance}
.b4-vs-head p{font:400 17px/1.55 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0;max-width:580px}
.b4-vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;align-items:stretch}
.b4-vs-card{background:#fff;border:1px solid var(--mbm-line);border-radius:6px;padding:28px;display:flex;flex-direction:column;gap:14px;position:relative}
.b4-vs-card .b4-vs-pill{align-self:flex-start;font:800 11px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.16em;padding:5px 12px;border-radius:999px}
.b4-vs-card.sinus .b4-vs-pill{background:var(--mbm-red-100);color:var(--mbm-red-700)}
.b4-vs-card.b4p .b4-vs-pill{background:var(--mbm-green-100,#E5F7DC);color:#2C6F1E}
.b4-vs-card h3{font:800 24px var(--mbm-font-sans);color:var(--mbm-ink);margin:0;letter-spacing:-.01em}
.b4-vs-card .kicker{font:700 13px var(--mbm-font-sans);text-transform:uppercase;letter-spacing:.12em;color:var(--mbm-ink-3);margin-top:-4px}
.b4-vs-card p{font:400 15px/1.6 var(--mbm-font-sans);color:var(--mbm-ink-2);margin:0}
.b4-vs-axis{margin-top:8px;padding:14px;background:var(--mbm-bg-alt);border-radius:4px;font:500 14px/1.5 var(--mbm-font-sans);color:var(--mbm-ink)}
.b4-vs-axis b{color:var(--mbm-red-700);font-weight:800}
.b4-vs-card.b4p .b4-vs-axis b{color:#2C6F1E}
.b4-vs-q{display:grid;gap:6px}
.b4-vs-q .q{font:500 14px/1.5 var(--mbm-font-sans);color:var(--mbm-ink-2);padding:8px 0;border-top:1px solid var(--mbm-line);font-style:italic}
.b4-vs-q .q:first-child{border-top:0}
.b4-vs-note{margin-top:24px;background:var(--mbm-ink);color:#fff;padding:22px 28px;border-radius:6px;display:flex;align-items:center;gap:18px;font:500 16px/1.5 var(--mbm-font-sans)}
.b4-vs-note b{color:#fff;font-weight:800}
.b4-vs-note .smart{flex-shrink:0;width:44px;height:44px;border-radius:6px;background:var(--mbm-green-600);display:grid;place-items:center;color:#fff}
.b4-vs-note .smart i{font-size:22px;line-height:1}

/* CTA band */
.b4-cta{background:var(--mbm-ink);color:#fff;padding:72px 24px;text-align:center}
.b4-cta h2{font:800 36px/1.15 var(--mbm-font-sans);color:#fff;margin:0 auto 10px;text-wrap:balance;letter-spacing:-.01em;max-width:760px}
.b4-cta p{font:400 17px/1.55 var(--mbm-font-sans);color:rgba(255,255,255,.78);margin:0 auto 26px;max-width:600px}
.b4-cta-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

@media (max-width:880px){
  .b4-hero-inner,.b4-creds-inner{grid-template-columns:1fr}
  .b4-modes-grid,.b4-uses-grid,.b4-vs-grid{grid-template-columns:1fr}
  .b4-flow{grid-template-columns:1fr;gap:12px}
  .b4-flow-arrow{transform:rotate(90deg)}
  .b4-h1,.b4-section h2{font-size:32px}
}