*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--bg:#fdf8f2;--surface:#fff;--surface-alt:#f5ede3;--text:#2d1f14;--text-light:#6b5a4a;--accent:#d97706;--accent-dark:#92400e;--accent-light:#fef3c7;--success:#16a34a;--danger:#dc2626;--border:#e8ddd0;--radius:12px;--shadow:0 2px 8px rgba(45,31,20,.08);--shadow-lg:0 8px 32px rgba(45,31,20,.12);--max-width:960px;--font:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:var(--max-width);margin:0 auto;padding:0 1.5rem}
img{max-width:100%;height:auto}

/* Header */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100;backdrop-filter:blur(8px);background:rgba(255,255,255,.92)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-top:.75rem;padding-bottom:.75rem}
.logo{display:flex;align-items:center;gap:.5rem;text-decoration:none;color:var(--text);font-weight:700;font-size:1.15rem}
.main-nav{display:flex;gap:.5rem}
.main-nav a{text-decoration:none;color:var(--text-light);padding:.4rem .75rem;border-radius:8px;font-size:.9rem;transition:background .15s}
.main-nav a:hover{background:var(--accent-light);color:var(--accent-dark)}

/* Hero */
.hero{padding:4rem 0 3rem;text-align:center;background:linear-gradient(180deg,var(--accent-light) 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.8rem,5vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:1rem;color:var(--accent-dark)}
.subtitle{font-size:1.1rem;color:var(--text-light);max-width:560px;margin:0 auto 2rem}
.cta-button{display:inline-block;background:var(--accent);color:#fff;padding:.85rem 2rem;border-radius:var(--radius);text-decoration:none;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:background .15s,transform .15s;box-shadow:var(--shadow)}
.cta-button:hover{background:var(--accent-dark);transform:translateY(-1px)}

/* Sections */
section{padding:3rem 0}
.section-note{color:var(--text-light);margin-bottom:2rem;font-size:.95rem}
h2{font-size:1.6rem;margin-bottom:.5rem;color:var(--accent-dark)}

/* Diagnostic Form */
.diagnostic-form{background:var(--surface);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow-lg);border:1px solid var(--border)}
.step{border:none;padding:0;margin:0 0 2rem}
.step legend{font-weight:700;font-size:1.05rem;margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.step-num{background:var(--accent);color:#fff;width:28px;height:28px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;font-size:.85rem;font-weight:700;flex-shrink:0}
.hint{font-weight:400;color:var(--text-light);font-size:.85rem}
.option-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:.75rem}
.option-card{position:relative;display:flex;flex-direction:column;align-items:center;gap:.4rem;padding:1rem .75rem;border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:border-color .15s,background .15s;text-align:center;background:var(--bg)}
.option-card:hover{border-color:var(--accent)}
.option-card input{position:absolute;opacity:0}
.option-card:has(input:checked){border-color:var(--accent);background:var(--accent-light)}
.option-icon{font-size:1.5rem}
.option-label{font-size:.85rem;font-weight:500}
.checkbox-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:.5rem}
.check-card{display:flex;align-items:center;gap:.5rem;padding:.6rem .75rem;border:2px solid var(--border);border-radius:var(--radius);cursor:pointer;transition:border-color .15s,background .15s;background:var(--bg);font-size:.9rem}
.check-card:hover{border-color:var(--accent)}
.check-card input{width:18px;height:18px;accent-color:var(--accent);flex-shrink:0}
.check-card:has(input:checked){border-color:var(--accent);background:var(--accent-light)}
.timing-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr))}
#run-diag{display:block;width:100%;margin-top:1.5rem;font-size:1.05rem;padding:1rem}

/* Results */
.results-panel{margin-top:2rem;background:var(--surface);border-radius:var(--radius);padding:2rem;border:2px solid var(--accent);box-shadow:var(--shadow-lg)}
.results-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;margin-bottom:1.5rem}
.results-header h3{font-size:1.2rem;color:var(--accent-dark)}
.results-actions{display:flex;gap:.5rem;flex-wrap:wrap}
.btn-secondary{padding:.5rem 1rem;border:1px solid var(--border);border-radius:8px;background:var(--bg);cursor:pointer;font-size:.85rem;color:var(--text);transition:background .15s}
.btn-secondary:hover{background:var(--accent-light)}
.result-body h4{font-size:1.05rem;margin:1.25rem 0 .5rem;color:var(--accent-dark)}
.result-body h4:first-child{margin-top:0}
.result-body p,.result-body li{font-size:.95rem;color:var(--text)}
.result-body ul{padding-left:1.25rem;margin-bottom:.75rem}
.result-body li{margin-bottom:.35rem}
.result-body .ratio-box{background:var(--accent-light);border-radius:8px;padding:1rem;margin:.75rem 0;font-size:.9rem}
.result-body .ratio-box strong{color:var(--accent-dark)}
.result-body .cause-tag{display:inline-block;background:var(--accent-light);color:var(--accent-dark);padding:.2rem .6rem;border-radius:6px;font-size:.8rem;font-weight:600;margin-right:.3rem;margin-bottom:.3rem}

/* Empty State */
.empty-state{text-align:center;padding:2rem;color:var(--text-light)}
.hidden{display:none!important}

/* Reference */
.reference-section{background:var(--surface-alt)}
.reference-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem}
.ref-card{background:var(--surface);border-radius:var(--radius);padding:1.5rem;border:1px solid var(--border);box-shadow:var(--shadow)}
.ref-card h3{font-size:1.1rem;margin-bottom:.75rem;color:var(--accent-dark)}
.ref-card dl{display:grid;grid-template-columns:auto 1fr;gap:.35rem .75rem;margin-bottom:.75rem}
.ref-card dt{font-weight:600;font-size:.85rem;color:var(--text)}
.ref-card dd{font-size:.85rem;color:var(--text-light)}
.ref-tip{font-size:.85rem;color:var(--accent-dark);background:var(--accent-light);padding:.6rem .75rem;border-radius:8px}

/* Saved */
.saved-section{background:var(--surface-alt)}
.saved-list{display:grid;gap:.75rem}
.saved-item{background:var(--surface);border-radius:var(--radius);padding:1rem 1.25rem;border:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.75rem}
.saved-item-info h4{font-size:.95rem;margin-bottom:.2rem}
.saved-item-info p{font-size:.8rem;color:var(--text-light)}
.saved-item-actions{display:flex;gap:.5rem}
.btn-danger{background:var(--danger);color:#fff;border:none;padding:.5rem 1rem;border-radius:8px;cursor:pointer;font-size:.85rem}
.empty-saved{color:var(--text-light);text-align:center;padding:1.5rem}

/* Mistakes */
.mistakes-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1.25rem}
.mistake-card{background:var(--surface);border-radius:var(--radius);padding:1.5rem;border:1px solid var(--border);border-left:4px solid var(--accent);box-shadow:var(--shadow)}
.mistake-card h3{font-size:1rem;margin-bottom:.5rem}
.mistake-card p{font-size:.9rem;color:var(--text-light)}

/* Scenarios */
.scenario-section{background:var(--surface-alt)}
.scenario-list{display:grid;gap:1.25rem}
.scenario{background:var(--surface);border-radius:var(--radius);padding:1.5rem;border:1px solid var(--border);box-shadow:var(--shadow)}
.scenario h3{font-size:1.05rem;margin-bottom:.5rem;color:var(--accent-dark)}
.scenario p{font-size:.9rem;margin-bottom:.4rem;color:var(--text-light)}
.scenario strong{color:var(--text)}

/* Assumptions */
.assumptions-section{background:var(--surface-alt)}
.assumptions-list{list-style:none;padding:0;margin-bottom:1.5rem}
.assumptions-list li{padding:.4rem 0 .4rem 1.5rem;position:relative;font-size:.9rem;color:var(--text-light)}
.assumptions-list li::before{content:"•";position:absolute;left:0;color:var(--accent);font-weight:700}
.last-updated{font-size:.8rem;color:var(--text-light)}

/* Footer */
.site-footer{background:var(--text);color:#e8ddd0;padding:3rem 0 1.5rem;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:2rem;margin-bottom:2rem}
.footer-grid strong{color:#fff;display:block;margin-bottom:.5rem}
.footer-grid p,.footer-grid a{font-size:.85rem;color:#c8b8a8;text-decoration:none}
.footer-grid a:hover{color:#fff}
.footer-grid ul{list-style:none;padding:0}
.footer-grid li{margin-bottom:.25rem}
.copyright{text-align:center;font-size:.8rem;color:#8a7a6a;border-top:1px solid rgba(255,255,255,.1);padding-top:1.5rem}

/* Responsive */
@media(max-width:768px){
  .site-header .container{flex-direction:column;align-items:flex-start}
  .main-nav{flex-wrap:wrap}
  .option-grid,.checkbox-grid{grid-template-columns:1fr 1fr}
  .timing-grid{grid-template-columns:1fr 1fr}
  .results-header{flex-direction:column;align-items:flex-start}
  .hero{padding:2.5rem 0 2rem}
}
@media(max-width:480px){
  .option-grid,.checkbox-grid,.timing-grid{grid-template-columns:1fr}
  .diagnostic-form{padding:1.25rem}
  .footer-grid{grid-template-columns:1fr}
}

/* Print */
@media print{
  .site-header,.site-footer,.results-actions,.cta-button,.btn-secondary,#step-sauce,#step-symptoms,#step-timing,.section-note{display:none!important}
  .results-panel{border:none;box-shadow:none}
  body{background:#fff}
}

/* Focus styles */
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition-duration:.01ms!important}
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}