/* Small Engine Code - site styles. Mobile-first; three width classes tuned
   independently: phone (base), tablet 700-1180px, desktop 1181px+.
   Content is never hidden by default in CSS. */
:root{
  --ink:#1f2937; --ink-soft:#4b5563; --paper:#ffffff; --wash:#f3f4f6;
  --line:#e5e7eb; --accent:#b45309; --accent-soft:#fef3c7;
  --band:#111827; --band-ink:#f9fafb;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.55;color:var(--ink);background:var(--paper)}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.wrap{max-width:1100px;margin:0 auto;padding:0 16px}

/* Header */
.site-head{border-bottom:1px solid var(--line);padding:14px 0}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.wordmark{font-weight:800;font-size:20px;color:var(--ink);letter-spacing:-0.02em}
.wordmark span{color:var(--accent)}
.main-nav{display:flex;gap:18px;font-size:15px}
.main-nav a{color:var(--ink);min-height:44px;display:inline-flex;align-items:center}

/* Breadcrumb + title */
.crumbs{font-size:13px;color:var(--ink-soft);padding:14px 0 0}
.crumbs a{color:var(--ink-soft)}
h1{font-size:28px;line-height:1.2;margin:10px 0 6px;letter-spacing:-0.02em}
.verdict{font-size:17px;color:var(--ink-soft);margin:0 0 20px}

/* Stat tiles */
.tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:0 0 24px}
.tile{background:var(--wash);border:1px solid var(--line);border-radius:12px;padding:14px}
.tile .num{font-size:30px;font-weight:800;letter-spacing:-0.02em;line-height:1.05}
.tile .lbl{font-size:13px;color:var(--ink-soft);margin-top:4px}
.tile .src{font-size:12px;color:var(--ink-soft)}

/* Dimension diagram */
.diagram{border:1px solid var(--line);border-radius:12px;padding:16px;margin:0 0 24px}
.diagram h2,.section h2{font-size:20px;margin:0 0 10px}
.diagram svg{width:100%;height:auto;display:block}
.unit-toggle{display:flex;gap:8px;margin-top:10px}
.unit-toggle button{min-height:44px;padding:8px 16px;border:1px solid var(--line);
  background:var(--paper);border-radius:8px;font-size:14px;cursor:pointer}
.unit-toggle button[aria-pressed="true"]{background:var(--accent);color:#fff;border-color:var(--accent)}

/* Comparison bars */
.bars{margin:0 0 24px}
.bar-row{margin:0 0 12px}
.bar-row .bar-head{display:flex;justify-content:space-between;font-size:14px;margin-bottom:4px}
.bar-track{background:var(--wash);border-radius:6px;height:16px;overflow:hidden}
.bar-fill{background:var(--accent);height:100%}
.bar-fill.self{background:var(--ink)}
.bar-metric{font-size:13px;color:var(--ink-soft);text-transform:uppercase;letter-spacing:0.04em;margin:16px 0 8px}

/* Spec cards */
.cards{display:grid;grid-template-columns:minmax(0,1fr);gap:12px;margin:0 0 24px}
.card{border:1px solid var(--line);border-radius:12px;padding:16px}
.card h3{margin:0 0 10px;font-size:16px}
.spec-list{margin:0;padding:0;list-style:none}
.spec-list li{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px solid var(--line)}
.spec-list li:last-child{border-bottom:0}
.spec-list .k{color:var(--ink-soft);font-size:14px}
.spec-list .v{font-weight:600;text-align:right;font-size:14px}
.spec-list .v .src{font-weight:400;color:var(--ink-soft);font-size:12px}

/* Repower band */
.band{background:var(--band);color:var(--band-ink);border-radius:12px;padding:18px;margin:0 0 24px}
.band h2{color:var(--band-ink)}
.band .note{color:#d1d5db;font-size:14px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.chip{background:var(--accent-soft);color:#92400e;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:600}
.band .chip{background:#374151;color:var(--band-ink)}
.checks{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:12px}
.check{background:#1f2937;border:1px solid #374151;border-radius:8px;padding:10px;font-size:14px}

/* FAQ */
.faq{margin:0 0 24px}
.faq details{border:1px solid var(--line);border-radius:10px;padding:12px 16px;margin:0 0 10px}
.faq summary{font-weight:600;cursor:pointer;min-height:44px;display:flex;align-items:center}
.faq p{margin:8px 0 4px;color:var(--ink-soft)}

/* Homepage */
.hero{padding:28px 0 8px}
.hero h1{font-size:32px}
.brand-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:16px 0 28px}
.brand-card{border:1px solid var(--line);border-radius:12px;padding:16px;color:var(--ink)}
.brand-card:hover{text-decoration:none;border-color:var(--accent)}
.brand-card .bname{font-weight:700;font-size:17px}
.brand-card .bcount{color:var(--ink-soft);font-size:13px}
.engine-list{list-style:none;margin:0 0 28px;padding:0}
.engine-list li{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin:0 0 10px}
.engine-list a{font-weight:600}

/* Footer */
.site-foot{border-top:1px solid var(--line);padding:22px 0 34px;color:var(--ink-soft);font-size:13px;margin-top:12px}

/* Tablet: 700-1180px - its own tuning, not a stretched phone layout */
@media (min-width:700px) and (max-width:1180px){
  .wrap{padding:0 24px}
  h1{font-size:32px}
  .tiles{grid-template-columns:repeat(3,minmax(0,1fr))}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .brand-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .checks{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* Desktop: 1181px+ */
@media (min-width:1181px){
  .wrap{padding:0 24px}
  h1{font-size:36px}
  .hero h1{font-size:40px}
  .tiles{grid-template-columns:repeat(5,minmax(0,1fr))}
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
  .brand-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .checks{grid-template-columns:repeat(4,minmax(0,1fr))}
}