:root{
  --color-bg:#f7fafa;
  --color-surface:#ffffff;
  --color-text:#132328;
  --color-muted:#5b7278;
  --color-primary:#0f7a72;
  --color-primary-dark:#0a5a54;
  --color-accent:#e08e2d;
  --color-border:#dfe9e8;
  --color-dark:#0d2b2a;
  --radius:12px;
  --max-width:1180px;
  font-family:'Heebo',system-ui,sans-serif;
}
*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{background:var(--color-bg);color:var(--color-text);line-height:1.6;font-size:16px;}
img{max-width:100%;display:block;}
a{color:var(--color-primary-dark);text-decoration:none;}
a:hover{text-decoration:underline;}
h1,h2,h3,h4{line-height:1.3;margin:0 0 .6em;}
h1{font-size:clamp(1.6rem,4vw,2.4rem);font-weight:800;}
h2{font-size:clamp(1.3rem,3vw,1.7rem);font-weight:700;}
h3{font-size:1.15rem;font-weight:700;}
p{margin:0 0 1em;}
.skip-link{position:absolute;right:-999px;top:0;background:#fff;padding:.5em 1em;z-index:200;}
.skip-link:focus{right:0;}
main{display:block;max-width:var(--max-width);margin:0 auto;padding:1.2rem 1rem 3rem;}

/* header */
.site-header{background:var(--color-surface);border-bottom:1px solid var(--color-border);position:sticky;top:0;z-index:100;}
.disclosure-bar{background:var(--color-dark);color:#cfe8e4;font-size:.78rem;text-align:center;padding:.4em 1em;}
.disclosure-bar a{color:#fff;text-decoration:underline;}
.header-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:.7rem 1rem;}
.logo{font-weight:800;font-size:1.4rem;color:var(--color-primary-dark);}
.logo span{color:var(--color-accent);}
.main-nav ul{list-style:none;display:flex;gap:1.2rem;margin:0;padding:0;}
.main-nav a{color:var(--color-text);font-weight:500;}
.nav-toggle{display:none;background:none;border:none;font-size:1.6rem;cursor:pointer;}
@media (max-width:820px){
  .nav-toggle{display:block;}
  .main-nav ul{position:absolute;inset-inline:0;top:100%;background:var(--color-surface);flex-direction:column;padding:1rem;gap:.8rem;border-bottom:1px solid var(--color-border);display:none;}
  .main-nav ul.open{display:flex;}
}

/* footer */
.site-footer{background:var(--color-dark);color:#cfe8e4;margin-top:3rem;}
.footer-inner{max-width:var(--max-width);margin:0 auto;padding:2.5rem 1rem;display:grid;grid-template-columns:repeat(4,1fr);gap:1.5rem;}
@media (max-width:900px){.footer-inner{grid-template-columns:1fr 1fr;}}
@media (max-width:520px){.footer-inner{grid-template-columns:1fr;}}
.footer-col h2,.footer-col h3{color:#fff;}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:.4em;}
.footer-col a{color:#cfe8e4;}
.footer-bottom{text-align:center;padding:1rem;font-size:.8rem;border-top:1px solid rgba(255,255,255,.1);}

/* breadcrumbs */
.breadcrumbs ol{list-style:none;display:flex;gap:.4em;flex-wrap:wrap;padding:0;margin:0 0 1rem;font-size:.85rem;color:var(--color-muted);}
.breadcrumbs li:not(:last-child)::after{content:"‹";margin-inline-start:.4em;}

/* trust badges */
.trust-badges{display:flex;gap:.6rem;flex-wrap:wrap;margin:.6rem 0 1.2rem;}
.badge{background:#e7f4f1;color:var(--color-primary-dark);border:1px solid var(--color-primary);border-radius:999px;padding:.3em .9em;font-size:.8rem;font-weight:600;}

/* tldr */
.tldr-box{background:#fff8ea;border:1px solid #f0d9a8;border-radius:var(--radius);padding:1rem 1.2rem;margin:1rem 0 1.6rem;}
.tldr-title{font-size:1rem;color:var(--color-accent);margin-bottom:.4em;}
.tldr-body{font-size:.98rem;}

/* buttons */
.btn{display:inline-block;padding:.65em 1.1em;border-radius:8px;font-weight:700;text-align:center;text-decoration:none;}
.btn-primary{background:var(--color-primary);color:#fff;}
.btn-primary:hover{background:var(--color-primary-dark);}
.btn-secondary{background:var(--color-accent);color:#fff;}
.btn-tertiary{background:transparent;color:var(--color-primary-dark);border:1px solid var(--color-primary);}

/* multi-CTA product box */
.cta-box{display:grid;grid-template-columns:220px 1fr;gap:1.2rem;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.2rem;margin:1.2rem 0;}
@media (max-width:640px){.cta-box{grid-template-columns:1fr;}}
.dims-table{width:100%;border-collapse:collapse;margin:.6rem 0;font-size:.9rem;}
.dims-table th,.dims-table td{text-align:right;padding:.25em .4em;border-bottom:1px solid var(--color-border);}
.cta-price{font-size:1.3rem;font-weight:800;color:var(--color-primary-dark);}
.cta-buttons{display:flex;gap:.6rem;flex-wrap:wrap;margin:.8rem 0;}
.link-review{font-weight:600;}

/* comparison table */
.table-wrap{overflow-x:auto;margin:1rem 0;}
.comparison-table{width:100%;border-collapse:collapse;min-width:640px;}
.comparison-table th,.comparison-table td{padding:.6em .8em;border-bottom:1px solid var(--color-border);text-align:right;white-space:nowrap;}
.comparison-table thead th{background:var(--color-primary);color:#fff;position:sticky;top:0;}
.comparison-table tbody tr:hover{background:#f1f8f7;}

/* faq */
.faq-section h3{margin-top:1.2em;}

/* data sources */
.data-sources{background:#f1f5f5;border-radius:var(--radius);padding:1rem 1.2rem;margin-top:2rem;font-size:.85rem;color:var(--color-muted);}
.data-sources ul{margin:0;padding-inline-start:1.2em;}

/* calculator */
.calc-form{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.4rem;display:grid;gap:1rem;}
.calc-form label{display:block;font-weight:600;margin-bottom:.3em;}
.calc-form input,.calc-form select{width:100%;padding:.6em;border:1px solid var(--color-border);border-radius:8px;font-size:1rem;font-family:inherit;}
.calc-results{display:grid;gap:1rem;margin-top:1.5rem;}
.calc-cta-sticky{position:sticky;bottom:0;background:var(--color-surface);border-top:1px solid var(--color-border);padding:.8rem 1rem;display:none;}
@media (max-width:640px){.calc-cta-sticky.active{display:block;}}

/* generic grid/card helpers */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1.2rem;margin:1.2rem 0;}
.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1rem;}
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:.8rem;}
.gallery-grid img{border-radius:var(--radius);aspect-ratio:4/3;object-fit:cover;}
.rating-stars{color:var(--color-accent);}

section{margin-bottom:2rem;}