/* Niche-agnostic base stylesheet — brand colors via CSS custom properties */
:root {
  --accent: #2563eb; --accent-light: #dbeafe; --accent-dark: #1e40af;
  --bg: #ffffff; --bg-tint: #f8fafc; --bg-dark: #0f172a;
  --text: #1e293b; --text-muted: #64748b;
  --radius: 8px; --shadow: 0 2px 8px rgba(0,0,0,.08);
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:100%;scroll-behavior:smooth}
body{font-family:Inter,system-ui,-apple-system,sans-serif;color:var(--text);background:var(--bg);line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}

/* Layout */
.wrap{max-width:720px;margin:0 auto;padding:0 1rem}
.wrap-wide{max-width:1100px;margin:0 auto;padding:0 1rem}
.band{padding:3rem 0}
.band--tint{background:var(--bg-tint)}
.band--dark{background:var(--bg-dark);color:#f1f5f9}
.band--dark a{color:var(--accent-light)}

/* Header / Nav */
.site-header{background:var(--bg);border-bottom:1px solid var(--bg-tint);position:sticky;top:0;z-index:100}
.top-bar{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;max-width:1100px;margin:0 auto}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:700;font-size:1.15rem;color:var(--text)}
.brand-logo{height:32px;width:auto}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:4px}
.nav-toggle-bar{width:24px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s}
#main-nav{display:flex;gap:1.5rem;list-style:none;align-items:center}
#main-nav a{color:var(--text);font-size:.9rem;font-weight:500}
#main-nav a:hover{color:var(--accent)}

/* Hero */
.hero{text-align:center;padding:4rem 1rem 3rem;background:linear-gradient(rgba(9,12,17,.68),rgba(9,12,17,.74)),#0d1117 url('/images/photos/hero-detector.jpg') center/cover no-repeat}
.hero__eyebrow{font-size:.85rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-weight:700;margin-bottom:.5rem;text-shadow:0 1px 3px rgba(0,0,0,.6)}
.hero__headline{font-size:clamp(1.75rem,5vw,2.75rem);font-weight:800;line-height:1.15;margin-bottom:1rem;color:#fff;text-shadow:0 2px 8px rgba(0,0,0,.5)}
.hero__subhead{font-size:1.1rem;color:#e6edf3;max-width:560px;margin:0 auto 1.5rem;text-shadow:0 1px 4px rgba(0,0,0,.5)}
.hero__cta{display:inline-block}

/* Buttons */
.btn{display:inline-block;padding:.65rem 1.5rem;border-radius:var(--radius);font-weight:600;font-size:.95rem;border:2px solid var(--accent);background:var(--accent);color:#fff;cursor:pointer;transition:background .15s,transform .1s;text-align:center}
.btn:hover{background:var(--accent-dark);border-color:var(--accent-dark);text-decoration:none;transform:translateY(-1px)}
.btn-lg{padding:.85rem 2rem;font-size:1.05rem}
.btn-ghost{background:transparent;color:var(--accent)}
.btn-ghost:hover{background:var(--accent);color:#fff}

/* Segment grid */
.seg-grid{display:grid;gap:1.25rem;grid-template-columns:1fr}
.seg-card{background:var(--bg);border:1px solid var(--bg-tint);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow);transition:transform .15s}
.seg-card:hover{transform:translateY(-3px)}
.seg-card img{width:calc(100% + 3rem);height:180px;object-fit:cover;border-radius:var(--radius) var(--radius) 0 0;margin:-1.5rem -1.5rem 1rem -1.5rem}

/* Trust row */
.trust-row{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:1.5rem 2.5rem;padding:1rem 0}
.trust-row img{height:28px;opacity:.6;filter:grayscale(1);transition:opacity .2s}
.trust-row img:hover{opacity:1;filter:none}

/* How-it-works */
.how-step{display:flex;gap:1rem;align-items:flex-start;margin-bottom:1.5rem}
.how-step__number{flex-shrink:0;width:2.25rem;height:2.25rem;border-radius:50%;background:var(--accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.95rem}
.how-step__title{font-weight:600;margin-bottom:.25rem}

/* Science cards */
.sci-cards{display:grid;gap:1rem;grid-template-columns:1fr}
.sci-card{border-left:3px solid var(--accent);padding:.75rem 1rem;background:var(--bg-tint);border-radius:0 var(--radius) var(--radius) 0;font-size:.9rem}

/* Quiz */
.quiz-progress{height:6px;background:var(--bg-tint);border-radius:3px;overflow:hidden;margin-bottom:1.5rem}
.quiz-progress span{display:block;height:100%;background:var(--accent);transition:width .3s}
.quiz-step{display:none}
.quiz-step.active{display:block}
.quiz-option{display:block;width:100%;padding:.85rem 1rem;margin-bottom:.6rem;border:2px solid var(--bg-tint);border-radius:var(--radius);background:var(--bg);cursor:pointer;text-align:left;font-size:.95rem;transition:border-color .15s}
.quiz-option:hover{border-color:var(--accent-light)}
.quiz-option.selected{border-color:var(--accent);background:var(--accent-light)}

/* Program / sales page */
.program-hero{text-align:center;padding:3rem 1rem;background:var(--bg-tint);border-radius:var(--radius)}
.testimonial{border-left:3px solid var(--accent);padding:1rem 1.25rem;margin:1.25rem 0;font-style:italic;color:var(--text-muted)}
.benefit-card{padding:1.25rem;border-radius:var(--radius);background:var(--bg);box-shadow:var(--shadow);margin-bottom:1rem}
.module-card{display:flex;gap:1rem;padding:1rem;border:1px solid var(--bg-tint);border-radius:var(--radius);margin-bottom:.75rem;align-items:center}
.comparison-table{width:100%;border-collapse:collapse;font-size:.9rem}
.comparison-table th,.comparison-table td{padding:.6rem .75rem;border-bottom:1px solid var(--bg-tint);text-align:left}
.comparison-table thead th{background:var(--accent);color:#fff}

/* Checkout */
.checkout-summary{background:var(--bg-tint);padding:1.5rem;border-radius:var(--radius);margin-bottom:1.5rem}
.checkout-form label{display:block;font-weight:500;margin-bottom:.25rem;font-size:.9rem}
.checkout-form input[type="text"],.checkout-form input[type="email"],.checkout-form input:not([type]),.checkout-form select{width:100%;padding:.55rem .75rem;border:1px solid var(--bg-tint);border-radius:var(--radius);font-size:.95rem;margin-bottom:.75rem}
#paypal-buttons{margin-top:1rem}

/* Members */
.members-sidebar{background:var(--bg-tint);padding:1rem;border-radius:var(--radius)}
.members-sidebar a{display:block;padding:.5rem .75rem;border-radius:var(--radius);color:var(--text);font-size:.9rem}
.members-sidebar a:hover,.members-sidebar a.active{background:var(--accent-light);color:var(--accent-dark);text-decoration:none}
.members-content{padding:1.5rem 0}
.audio-player{background:var(--bg-tint);padding:1rem;border-radius:var(--radius);margin:1rem 0}
.audio-player audio{width:100%}

/* Footer */
.site-footer{background:var(--bg-dark);color:var(--text-muted);padding:2.5rem 1rem 1.5rem;font-size:.85rem}
.foot-nav{display:flex;flex-wrap:wrap;gap:.75rem 1.5rem;list-style:none;margin-bottom:1rem}
.foot-nav a{color:var(--text-muted)}
.foot-nav a:hover{color:#f1f5f9}
.footer-brand{font-weight:700;color:#f1f5f9;margin-bottom:.5rem}
.disclaimer{color:var(--text-muted);font-size:.75rem;margin-top:1rem;line-height:1.5}
.copy{color:var(--text-muted);font-size:.75rem;margin-top:.5rem}

/* GDPR consent */
#consent-banner{position:fixed;bottom:0;left:0;right:0;background:var(--bg-dark);color:#f1f5f9;padding:1rem;z-index:9999;display:none;font-size:.85rem}
#consent-banner.visible{display:flex;align-items:center;justify-content:center;gap:1rem;flex-wrap:wrap}
#consent-modal{display:none;position:fixed;inset:0;z-index:10000;background:rgba(0,0,0,.5);align-items:center;justify-content:center}
#consent-modal.visible{display:flex}
.cm-dialog{background:var(--bg);border-radius:var(--radius);padding:1.5rem;max-width:500px;width:90%;max-height:80vh;overflow-y:auto}
.cm-cats{margin:1rem 0}
.cm-cat{display:flex;justify-content:space-between;align-items:center;padding:.5rem 0;border-bottom:1px solid var(--bg-tint);font-size:.9rem}

/* Blog */
.blog-card{border:1px solid var(--bg-tint);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .15s}
.blog-card:hover{transform:translateY(-2px)}
.blog-card img{width:100%;aspect-ratio:16/9;object-fit:cover}
.blog-card>div{padding:1rem}
.blog-meta{font-size:.8rem;color:var(--text-muted);margin-bottom:.35rem}
.blog-content{line-height:1.7;font-size:1rem}
.blog-content h2{margin:1.75rem 0 .75rem;font-size:1.4rem}
.blog-content h3{margin:1.5rem 0 .5rem;font-size:1.15rem}
.blog-content p{margin-bottom:1rem}
.blog-content ul,.blog-content ol{margin:0 0 1rem 1.25rem}
.blog-content blockquote{border-left:3px solid var(--accent);padding:.5rem 1rem;color:var(--text-muted);margin:1rem 0}
.blog-content img{border-radius:var(--radius);margin:1rem 0}

/* Utilities */
.text-center{text-align:center}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.hidden{display:none!important}
.btn-block{display:block;width:100%}
.prose{line-height:1.7}.prose h2{margin:1.5rem 0 .5rem}.prose p{margin-bottom:1rem}

/* Lead-magnet hero (optin-magnet.html) */
.mag-hero{text-align:left}
.mag-hero-inner{display:grid;grid-template-columns:1fr;gap:2rem;align-items:center}
.mag-hero-copy .hero__headline{text-align:left}
.mag-hero-copy .hero__subhead{margin:0 0 1rem;text-align:left}
.mag-trust-pills{display:flex;gap:.75rem;flex-wrap:wrap;font-size:.85rem;color:#e6edf3;margin-top:1rem;text-shadow:0 1px 3px rgba(0,0,0,.6)}
.mag-gate{background:var(--bg);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}
.mag-gate input[type="email"],.mag-gate input[type="text"],.mag-gate input:not([type]){width:100%;padding:.6rem .75rem;border:1px solid var(--bg-tint);border-radius:4px;font-size:.95rem;margin-bottom:.75rem}
.mag-gate-head{font-weight:700;font-size:1.1rem;margin-bottom:.25rem;color:var(--text)}
.mag-gate-sub{font-size:.9rem;color:var(--text-muted);margin-bottom:1rem;line-height:1.5}
.mag-gate-mid{max-width:440px;margin:0 auto}
.mag-btn{font-size:1rem;padding:.75rem 1.5rem}
.mag-micro{font-size:.8rem;color:var(--text-muted);margin-top:.5rem;text-align:center}
.mag-done{text-align:center}
.consent{display:flex;align-items:flex-start;gap:.5rem;font-size:.85rem;line-height:1.4;margin-bottom:1rem;cursor:pointer}
.consent input{margin-top:.2rem;flex-shrink:0}
.form-msg{font-size:.85rem;min-height:1.2em;margin-top:.25rem;color:var(--accent-dark)}
.lock{font-size:2rem;margin-bottom:.5rem}
.gate-h2{font-size:1.3rem;font-weight:700;margin-bottom:.5rem}
@media(min-width:700px){.mag-hero-inner{grid-template-columns:1.2fr 1fr}}

/* Responsive: 600px */
@media(max-width:600px){
  .nav-toggle{display:flex}
  #main-nav{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--bg);padding:1rem;border-top:1px solid var(--bg-tint);box-shadow:var(--shadow)}
  #main-nav.open{display:flex}
  .hero{padding:2.5rem 1rem 2rem}
  .band{padding:2rem 0}
}
@media(min-width:600px){
  .seg-grid{grid-template-columns:repeat(2,1fr)}
  .sci-cards{grid-template-columns:repeat(2,1fr)}
}
/* Responsive: 900px */
@media(min-width:900px){
  .seg-grid{grid-template-columns:repeat(3,1fr)}
}