:root {
  --pe-black: #0a0908;
  --pe-charcoal: #1a140f;
  --pe-charcoal-deep: #120d09;
  --pe-gold: #c9a65c;
  --pe-gold-bright: #e0be76;
  --pe-cream: #f0ebe0;
  --pe-white: #faf9f6;
  --pe-grey: #9e968a;
  --pe-rule: #4e402a;
  --pe-cta-bg: #eee7d8;
  --radius: 10px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--pe-black);
  color: var(--pe-white);
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
.container { max-width: 1160px; margin: 0 auto; padding: 0 20px; }
.muted { color: var(--pe-grey); }
h1, h2, h3, h4 { font-family: Arial Black, Arial, sans-serif; letter-spacing: .01em; margin: 0 0 .4em; }
h1 { font-size: clamp(1.9rem, 4vw, 3rem); color: var(--pe-white); }
h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); color: var(--pe-white); }
h3 { font-size: 1.1rem; color: var(--pe-gold-bright); }
h4 { font-size: .85rem; color: var(--pe-gold); text-transform: uppercase; letter-spacing: .08em; display: flex; align-items: center; gap: 6px; }
.section { padding: 56px 0; }
.section-alt { background: var(--pe-charcoal); }
.section-head { max-width: 640px; margin-bottom: 28px; }
.icon { width: 22px; height: 22px; color: var(--pe-gold); flex-shrink: 0; }

/* header */
.site-header { position: sticky; top: 0; z-index: 20; background: rgba(10,9,8,.94); border-bottom: 1px solid var(--pe-rule); backdrop-filter: blur(4px); }
.header-row { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { text-decoration: none; display: flex; flex-direction: column; line-height: 1.1; }
.brand-name { font-family: Arial Black, Arial, sans-serif; letter-spacing: .06em; color: var(--pe-white); font-size: 1rem; }
.brand-name.small { font-size: .9rem; }
.brand-sub { font-size: .65rem; letter-spacing: .18em; color: var(--pe-gold); }
.site-nav { display: flex; align-items: center; gap: 22px; }
.nav-link { text-decoration: none; color: var(--pe-grey); font-size: .92rem; padding: 6px 2px; border-bottom: 2px solid transparent; }
.nav-link:hover, .nav-link.active { color: var(--pe-white); border-bottom-color: var(--pe-gold); }
.nav-cta { display: inline-flex; align-items: center; gap: 6px; background: var(--pe-gold); color: var(--pe-black); text-decoration: none; padding: 8px 14px; border-radius: 999px; font-weight: 700; font-size: .85rem; }
.nav-cta .icon { color: var(--pe-black); width: 16px; height: 16px; }
.nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 8px; }
.nav-toggle span { width: 22px; height: 2px; background: var(--pe-white); }

/* hero */
.hero { background-size: cover; background-position: center; padding: 90px 0 70px; }
.hero-inner { max-width: 680px; }
.badge-row { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.badge { border: 1px solid var(--pe-gold); color: var(--pe-gold-bright); font-size: .7rem; letter-spacing: .08em; padding: 5px 10px; border-radius: 999px; }
.lead { font-size: 1.05rem; color: var(--pe-cream); max-width: 560px; }
.cta-row { display: flex; gap: 14px; margin-top: 26px; flex-wrap: wrap; }

/* buttons */
.btn { display: inline-flex; align-items: center; gap: 8px; text-decoration: none; padding: 12px 22px; border-radius: 8px; font-weight: 700; font-size: .95rem; border: 1px solid transparent; cursor: pointer; }
.btn .icon { width: 18px; height: 18px; }
.btn-primary { background: var(--pe-gold); color: var(--pe-black); }
.btn-primary .icon { color: var(--pe-black); }
.btn-primary:hover { background: var(--pe-gold-bright); }
.btn-ghost { background: transparent; color: var(--pe-white); border-color: var(--pe-rule); }
.btn-ghost:hover { border-color: var(--pe-gold); }
.btn-outline { background: transparent; color: var(--pe-gold-bright); border-color: var(--pe-gold); }
.btn-outline:hover { background: var(--pe-gold); color: var(--pe-black); }
.btn-sm { padding: 7px 12px; font-size: .78rem; }

/* cards */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 18px; }
.card { background: var(--pe-charcoal); border: 1px solid var(--pe-rule); border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column; }
.card-media { height: 150px; background: var(--pe-charcoal-deep); position: relative; }
.card-media img { width: 100%; height: 100%; object-fit: cover; }
.card-media-icon { display: flex; align-items: center; justify-content: center; }
.card-media-icon .icon { width: 44px; height: 44px; opacity: .5; }
.photo-label { position: absolute; left: 8px; bottom: 8px; background: rgba(10,9,8,.75); color: var(--pe-cream);
               font-size: .62rem; letter-spacing: .04em; padding: 3px 8px; border-radius: 999px; border: 1px solid var(--pe-rule); }
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 4px; flex: 1; }
.eyebrow { font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--pe-gold); }
.card-fit { font-size: .85rem; }
.card-meta { font-size: .78rem; }
.card-price-row { margin-top: auto; padding-top: 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.card-price { color: var(--pe-gold-bright); font-weight: 800; font-size: 1.15rem; }
.card-price-note { display: block; font-size: .68rem; }

/* engine family cards — complete + alone (+ variant) options grouped in one card */
.variant-list { margin-top: auto; padding-top: 10px; display: flex; flex-direction: column; gap: 8px; }
.variant-row { border-top: 1px solid var(--pe-rule); padding-top: 8px; }
.variant-row:first-child { border-top: none; padding-top: 0; }
.variant-label { font-size: .72rem; letter-spacing: .05em; text-transform: uppercase; color: var(--pe-gold); margin-bottom: 4px; }
.price-chip-row { display: flex; flex-wrap: wrap; gap: 8px; }
.price-chip { display: flex; flex-direction: column; background: var(--pe-charcoal-deep); border: 1px solid var(--pe-rule); border-radius: 6px; padding: 5px 9px; min-width: 0; }
.price-chip-label { font-size: .64rem; color: var(--pe-grey); white-space: nowrap; }
.price-chip-value { font-size: .95rem; font-weight: 700; color: var(--pe-gold-bright); }

/* benefits */
.benefit-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 26px; }
.benefit { text-align: left; }
.icon-badge { display: inline-flex; align-items: center; justify-content: center; width: 46px; height: 46px; border: 1px solid var(--pe-gold); border-radius: 50%; margin-bottom: 10px; }

/* cta banner */
.cta-banner { text-align: center; background: var(--pe-charcoal); border: 1px solid var(--pe-rule); border-radius: var(--radius); padding: 44px 24px; }
.cta-banner p { max-width: 480px; margin: 0 auto 20px; }

/* footer */
.site-footer { background: var(--pe-charcoal-deep); border-top: 1px solid var(--pe-rule); padding: 44px 0 20px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 26px; }
.footer-col p { font-size: .88rem; margin: 8px 0 0; }
.footer-bottom { margin-top: 30px; padding-top: 16px; border-top: 1px solid var(--pe-rule); }
.footer-bottom p { font-size: .78rem; }

/* engines page */
.filter-row { margin-bottom: 16px; }
#engineSearch { width: 100%; max-width: 420px; padding: 12px 16px; border-radius: 8px; border: 1px solid var(--pe-rule); background: var(--pe-charcoal); color: var(--pe-white); font-size: .95rem; }
#engineSearch:focus { outline: none; border-color: var(--pe-gold); }
.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 30px; }
.chip { text-decoration: none; background: var(--pe-charcoal); border: 1px solid var(--pe-rule); color: var(--pe-cream); font-size: .78rem; padding: 6px 12px; border-radius: 999px; }
.chip:hover { border-color: var(--pe-gold); color: var(--pe-gold-bright); }
.make-heading { margin-top: 34px; border-bottom: 1px solid var(--pe-rule); padding-bottom: 8px; scroll-margin-top: 90px; }
.make-group { scroll-margin-top: 82px; }
.make-group:first-of-type .make-heading { margin-top: 6px; }

/* service-kit breakdown */
.kit-breakdown { margin-top: 12px; border-top: 1px solid var(--pe-rule); padding-top: 10px; }
.kit-breakdown summary { cursor: pointer; color: var(--pe-gold); font-size: .82rem; font-weight: 700; list-style: none; }
.kit-breakdown summary::-webkit-details-marker { display: none; }
.kit-breakdown summary::before { content: "+ "; }
.kit-breakdown[open] summary::before { content: "‘2 "; }
.kit-section { margin-top: 12px; }
.kit-section h4 { font-size: .74rem; text-transform: uppercase; letter-spacing: .06em; color: var(--pe-gold-bright); margin: 0 0 6px; }
.kit-section ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.kit-section li { display: flex; justify-content: space-between; gap: 10px; font-size: .78rem; color: var(--pe-cream); }
.kit-section li span:last-child { color: var(--pe-grey); white-space: nowrap; }
.kit-breakdown-totals { margin-top: 14px; padding-top: 10px; border-top: 1px dashed var(--pe-rule); display: flex; flex-direction: column; gap: 4px; }
.kit-breakdown-totals div { display: flex; justify-content: space-between; font-size: .8rem; color: var(--pe-grey); }
.kit-breakdown-total-row { color: var(--pe-white) !important; font-weight: 700; font-size: .92rem !important; padding-top: 4px; }
.kit-breakdown-total-row span:last-child { color: var(--pe-gold-bright) !important; }

/* contact page */
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-bottom: 40px; }
.contact-card { background: var(--pe-charcoal); border: 1px solid var(--pe-rule); border-radius: var(--radius); padding: 22px; }
.contact-card p { margin: 10px 0 16px; font-size: .92rem; }
.terms-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 24px; background: var(--pe-charcoal); border: 1px solid var(--pe-rule); border-radius: var(--radius); padding: 26px; }

.section-cta { margin-top: 26px; }

@media (max-width: 760px) {
  .site-nav { position: fixed; top: 66px; left: 0; right: 0; background: var(--pe-black); border-bottom: 1px solid var(--pe-rule);
              flex-direction: column; align-items: flex-start; gap: 0; padding: 10px 20px 18px; transform: translateY(-8px);
              opacity: 0; pointer-events: none; transition: opacity .15s ease, transform .15s ease; }
  .site-nav.open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav-link { width: 100%; padding: 12px 0; border-bottom: 1px solid var(--pe-rule); }
  .nav-cta { margin-top: 12px; }
  .nav-toggle { display: flex; }
}