/* Scoped fog content only. Native Woo forms, shared rich pages and headlight assets are untouched. */
:is(.bts-4runner-kit,.bts-4runner-guide){--fog-ink:#171c21;--fog-muted:#56616a;--fog-line:#dde2e5;--fog-soft:#f2f4f5;--fog-gold:#f1b744;color:var(--fog-ink);font:inherit;line-height:1.65;max-width:1160px;margin:24px auto;overflow-wrap:anywhere}
:is(.bts-4runner-kit,.bts-4runner-guide) *{box-sizing:border-box;min-width:0}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-section{padding:clamp(24px,4vw,48px);margin:0 0 22px;border:1px solid var(--fog-line);border-radius:16px;background:#fff;scroll-margin-top:100px}
:is(.bts-4runner-kit,.bts-4runner-guide) h1,:is(.bts-4runner-kit,.bts-4runner-guide) h2,:is(.bts-4runner-kit,.bts-4runner-guide) h3{color:inherit;font-family:inherit;line-height:1.13;font-weight:750;text-transform:none;letter-spacing:-.025em;margin:0 0 17px}
.bts-4runner-guide h1{font-size:clamp(30px,4.7vw,52px);max-width:850px}
:is(.bts-4runner-kit,.bts-4runner-guide) h2{font-size:clamp(25px,3.2vw,37px)}
:is(.bts-4runner-kit,.bts-4runner-guide) h3{font-size:clamp(20px,2.1vw,25px)}
:is(.bts-4runner-kit,.bts-4runner-guide) p{margin:0 0 18px}
:is(.bts-4runner-kit,.bts-4runner-guide) p:last-child{margin-bottom:0}
:is(.bts-4runner-kit,.bts-4runner-guide) a{color:#155b86;text-underline-offset:3px}
:is(.bts-4runner-kit,.bts-4runner-guide) a:focus-visible,:is(.bts-4runner-kit,.bts-4runner-guide) button:focus-visible,:is(.bts-4runner-kit,.bts-4runner-guide) summary:focus-visible{outline:3px solid #1584c9;outline-offset:4px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-dark{background:#141a20;color:#fff;border-color:#141a20}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-dark a{color:#fff}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-kicker{font-size:12px;line-height:1.4;letter-spacing:.12em;text-transform:uppercase;font-weight:800;margin:0 0 12px;color:#6b5015}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-dark .rp-kicker{color:var(--fog-gold)}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-grid{display:grid;gap:20px;align-items:start;margin-bottom:20px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-card{padding:24px;border:1px solid var(--fog-line);border-radius:12px;background:var(--fog-soft)}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-link-card{display:block;text-decoration:none;color:var(--fog-ink);height:100%}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-link-card:hover{border-color:#7693a2;box-shadow:0 3px 16px #17232d12}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-link-label{display:block;font-weight:750;color:#155b86;margin-top:20px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure{margin:24px 0 0;width:100%;max-width:100%;scroll-margin-top:100px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure>a{display:block}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure img{display:block;width:100%;max-width:100%;height:auto;border-radius:10px;object-fit:contain}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure figcaption{font-size:13px;line-height:1.5;color:var(--fog-muted);margin-top:10px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-dark .rp-figure figcaption{color:#d8e0e5}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-pills,:is(.bts-4runner-kit,.bts-4runner-guide) .rp-jump,:is(.bts-4runner-kit,.bts-4runner-guide) .rp-related{display:flex;gap:10px;flex-wrap:wrap}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-pills span{padding:7px 12px;border:1px solid #52616d;border-radius:30px;font-size:13px;line-height:1.5}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-jump{margin:12px 0 24px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-jump a,:is(.bts-4runner-kit,.bts-4runner-guide) .rp-related a{display:inline-block;padding:10px 15px;border:1px solid var(--fog-line);border-radius:8px;font-size:14px;font-weight:700;text-decoration:none}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-related{margin-top:20px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-specs{margin:0 0 20px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-specs>div{display:grid;grid-template-columns:minmax(130px,.6fr) minmax(0,1.4fr);gap:18px;padding:15px 0;border-bottom:1px solid var(--fog-line)}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-specs dt{font-weight:750}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-specs dd{margin:0}
:is(.bts-4runner-kit,.bts-4runner-guide) ul,:is(.bts-4runner-kit,.bts-4runner-guide) ol{padding-left:22px;margin:0 0 20px}
:is(.bts-4runner-kit,.bts-4runner-guide) li{margin:0 0 10px}
:is(.bts-4runner-kit,.bts-4runner-guide) details{border-top:1px solid var(--fog-line);padding:17px 0}
:is(.bts-4runner-kit,.bts-4runner-guide) summary{font-weight:750;cursor:pointer;font-size:17px}
:is(.bts-4runner-kit,.bts-4runner-guide) details p{margin-top:12px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video{margin-top:28px;padding:24px;border-radius:12px;background:#1b232b;color:#fff}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-play{display:flex;align-items:center;justify-content:center;gap:16px;width:100%;min-height:120px;border:1px solid #485563;border-radius:8px;background:#26323e;color:#fff;font:inherit;font-weight:750;cursor:pointer;padding:20px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-icon{font-size:30px;color:var(--fog-gold)}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-caption{font-size:13px;color:#d9e0e5;margin-top:13px}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video iframe{width:100%;height:auto;aspect-ratio:16/9;border:0;display:block}
.bts-4runner-guide .fog-diagrams{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
.bts-4runner-guide .fog-diagrams .rp-figure:only-child{grid-column:1/-1;max-width:820px;margin-left:auto;margin-right:auto}
.bts-4runner-guide .fog-program-images{display:grid;gap:15px;max-width:650px;margin:0 auto}
.bts-4runner-guide .fog-control-figure{max-width:500px;margin-left:auto;margin-right:auto}
.bts-4runner-guide .fog-source-note{font-size:13px;line-height:1.6;color:var(--fog-muted);padding:10px 24px 30px}
@media(max-width:650px){:is(.bts-4runner-kit,.bts-4runner-guide){font-size:16px;margin:16px auto}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-section{padding:22px 18px;border-radius:12px;margin-bottom:16px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-grid-2,.bts-4runner-guide .fog-diagrams{grid-template-columns:minmax(0,1fr)}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-card{padding:20px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-specs>div{grid-template-columns:minmax(0,1fr);gap:4px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure img{border-radius:7px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-jump{gap:8px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-jump a{padding:9px 12px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video{padding:16px}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-play{padding:16px;font-size:16px}.bts-4runner-guide .fog-program-images{max-width:100%}}


:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure{max-width:900px;margin:24px auto}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure img{max-height:650px;object-fit:contain}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-play{position:relative;display:block;padding:0;overflow:hidden;aspect-ratio:16/9;min-height:0}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-play img{display:block;width:100%;height:100%;object-fit:cover;opacity:.72}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-play span{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);padding:14px 24px;border:2px solid white;border-radius:40px;background:#111d;color:#fff;font-size:18px;white-space:nowrap}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-video-caption{color:#56616a;margin-top:12px}
:is(.bts-4runner-kit,.bts-4runner-guide) table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:15px}
:is(.bts-4runner-kit,.bts-4runner-guide) th,:is(.bts-4runner-kit,.bts-4runner-guide) td{padding:14px;text-align:left;border-bottom:1px solid #dde2e5;vertical-align:top;overflow-wrap:anywhere}
:is(.bts-4runner-kit,.bts-4runner-guide) th{background:#f2f4f5}
:is(.bts-4runner-kit,.bts-4runner-guide) .rp-guide-card{display:inline-flex;min-height:44px;align-items:center;font-weight:750}
@media(max-width:650px){:is(.bts-4runner-kit,.bts-4runner-guide) table,:is(.bts-4runner-kit,.bts-4runner-guide) tbody{display:block}:is(.bts-4runner-kit,.bts-4runner-guide) thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}:is(.bts-4runner-kit,.bts-4runner-guide) tr{display:block;border:1px solid #dde2e5;border-radius:8px;padding:8px;margin-bottom:12px}:is(.bts-4runner-kit,.bts-4runner-guide) td{display:grid;grid-template-columns:34% minmax(0,1fr);gap:12px;padding:8px 4px}:is(.bts-4runner-kit,.bts-4runner-guide) td:before{content:attr(data-label);font-weight:700}:is(.bts-4runner-kit,.bts-4runner-guide) .rp-figure img{max-height:none}}

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:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-section{padding:clamp(22px,4vw,42px);border-bottom:1px solid #dde4e9}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-dark{background:#121b25;color:#fff;border-radius:18px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) h1{font-size:clamp(29px,4vw,44px);line-height:1.13;color:inherit}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) h2{font-size:clamp(23px,3vw,31px);line-height:1.2;color:inherit}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) h3{font-size:21px;line-height:1.3;color:inherit}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-grid>*{min-width:0}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-figure{margin:24px 0;min-width:0}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-figure a{display:block}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) img{display:block;width:100%;max-width:100%;height:auto;border-radius:10px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) figcaption{font-size:14px;line-height:1.5;margin:8px 0 18px;color:#465363}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-dark figcaption{color:#dce5eb}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-card{border:1px solid #dbe3ea;padding:20px;border-radius:14px;margin:18px 0}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-card h3{margin-top:0}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-button,:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) button{display:inline-block;padding:12px 18px;background:#16394a;color:#fff;border:0;border-radius:8px;font-size:16px;font-weight:700;cursor:pointer;text-decoration:none}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) a{color:#16394a}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) a.rp-button{color:#fff}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) a:focus-visible,:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) button:focus-visible{outline:3px solid #d99222;outline-offset:4px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-video{background:#101820;aspect-ratio:16/9;display:grid;place-items:center;border-radius:10px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-video iframe{width:100%;height:100%;border:0}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-video-caption{color:#465363;font-size:14px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-kicker{font-size:13px;font-weight:700;letter-spacing:.1em}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-source{font-size:13px}
:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-zoom{white-space:nowrap;text-decoration:underline}
.bts-4runner-xbg details{padding:16px 0;border-bottom:1px solid #dde4e9}
.bts-4runner-xbg summary{font-weight:700;cursor:pointer;min-height:28px}
.bts-4runner-xbg-guide .guide-jumps{display:flex;flex-wrap:wrap;gap:8px 16px}
.bts-4runner-xbg-guide .guide-jumps a{color:#fff;text-decoration:underline;display:inline-block;padding:10px 12px}
@media(max-width:600px){:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-grid{grid-template-columns:1fr}:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-section{padding:22px 16px}:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) li{margin-bottom:10px}:is(.bts-4runner-xbg,.bts-4runner-xbg-guide) .rp-video button{margin:12px}}

.bts-tail-brake{font-size:16px;line-height:1.65;color:#202020;max-width:1100px;margin:auto}.bts-tail-brake.tb-guide{max-width:750px}.bts-tail-brake section{margin:34px 0;scroll-margin-top:90px}.bts-tail-brake h1{font-size:clamp(28px,4vw,42px);line-height:1.16}.bts-tail-brake h2{font-size:clamp(23px,3vw,31px);line-height:1.25;margin-bottom:16px}.bts-tail-brake h3{font-size:21px;margin-top:24px}.bts-tail-brake a{color:#785600;text-decoration:underline;text-underline-offset:3px}.bts-tail-brake figure{margin:22px auto;max-width:750px}.bts-tail-brake figure img{display:block;width:100%;height:auto;object-fit:contain;border-radius:8px}.bts-tail-brake figcaption{font-size:14px;color:#555;margin-top:8px}.bts-tail-brake .tb-table{overflow:auto}.bts-tail-brake table{width:100%;border-collapse:collapse;font-size:15px}.bts-tail-brake th,.bts-tail-brake td{text-align:left;vertical-align:top;padding:12px;border-bottom:1px solid #ddd}.bts-tail-brake th{width:34%;background:#f7f5f0}.bts-tail-brake .tb-jumps,.bts-tail-brake .tb-related{display:flex;gap:12px;flex-wrap:wrap;padding:16px;background:#f5f2e9;border-radius:8px}.bts-tail-brake details{border-bottom:1px solid #ddd;padding:16px 0}.bts-tail-brake summary{font-weight:700;cursor:pointer}.bts-tail-brake .rp-video{max-width:750px;margin:24px auto}.bts-tail-brake .rp-video button{display:block;width:100%;padding:0;background:#111;color:#fff;border:0;cursor:pointer}.bts-tail-brake .rp-video img{display:block;width:100%;height:auto;max-height:420px;object-fit:contain}.bts-tail-brake .rp-video span{display:block;padding:14px}.bts-tail-brake .rp-video iframe{width:100%;aspect-ratio:16/9;border:0}.bts-tail-brake :focus-visible{outline:3px solid #b88a21;outline-offset:4px}@media(max-width:500px){.bts-tail-brake{font-size:16px}.bts-tail-brake th,.bts-tail-brake td{padding:10px 7px}.bts-tail-brake figure{margin:20px 0}.bts-tail-brake .tb-jumps{display:grid;grid-template-columns:1fr}.bts-tail-brake .tb-related{display:grid;grid-template-columns:1fr}}

.bts-r4-diode{max-width:100%;color:#222;font:16px/1.7 Arial,sans-serif}.bts-r4-diode .rp-section{padding:30px;margin:24px 0;border:1px solid #dedede;border-radius:14px;background:#fff}.bts-r4-diode .rp-dark{background:#171717;color:#fff;border-top:5px solid #d5ad52}.bts-r4-diode .rp-section h1{font-size:32px;line-height:1.25;margin:0 0 20px}.bts-r4-diode .rp-section h2{font-size:25px;line-height:1.3;margin:0 0 18px}.bts-r4-diode a{color:#795809;text-decoration:underline;overflow-wrap:anywhere}.bts-r4-diode .rp-dark a{color:#f0d497}.bts-r4-diode .rp-kicker{color:#e1bd65}.bts-r4-diode .rp-figure{max-width:750px;margin:24px auto}.bts-r4-diode .rp-figure img{display:block;width:100%;height:auto;border-radius:8px}.bts-r4-diode figcaption{font-size:14px;line-height:1.55;margin-top:8px}.bts-r4-diode .r4-specs{margin:0}.bts-r4-diode .r4-specs>div{display:grid;grid-template-columns:1fr 2fr;gap:16px;padding:12px 0;border-bottom:1px solid #ddd}.bts-r4-diode dt{font-weight:bold}.bts-r4-diode dd{margin:0}.bts-r4-diode details{padding:15px 0;border-bottom:1px solid #ddd}.bts-r4-diode summary{font-weight:bold;cursor:pointer}.bts-r4-diode .r4-note{border-left:4px solid #b28a32;padding:12px 18px;background:#faf6ec}.bts-r4-diode .rp-video{aspect-ratio:16/9;background:#151515;border-radius:10px;display:grid;place-items:center}.bts-r4-diode .rp-video button{background:#d8b45a;color:#151515;padding:16px;border:0;border-radius:6px;cursor:pointer;font-weight:bold}.bts-r4-diode .rp-video iframe{width:100%;height:100%;border:0}.bts-r4-diode .r4-related{display:flex;flex-wrap:wrap;gap:18px;padding:24px}.bts-r4-diode :focus-visible{outline:3px solid #286ba5;outline-offset:4px}@media(max-width:540px){.bts-r4-diode .rp-section{padding:20px 16px;margin:18px 0}.bts-r4-diode .rp-section h1{font-size:27px}.bts-r4-diode .rp-section h2{font-size:23px}.bts-r4-diode .r4-specs>div{grid-template-columns:1fr;gap:4px}}

.bts-r4-diode .r4-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.bts-r4-diode .r4-card{padding:18px;background:#f7f7f7;border-radius:10px}.bts-r4-diode .r4-table-wrap{overflow-x:auto}.bts-r4-diode table{width:100%;border-collapse:collapse}.bts-r4-diode th,.bts-r4-diode td{text-align:left;padding:12px;vertical-align:top;border-bottom:1px solid #ddd}.bts-r4-diode th{background:#f4f1e9}@media(max-width:540px){.bts-r4-diode .r4-grid{grid-template-columns:1fr}.bts-r4-diode table,.bts-r4-diode tbody,.bts-r4-diode tr,.bts-r4-diode td{display:block}.bts-r4-diode thead{display:none}.bts-r4-diode tr{border-bottom:2px solid #ccc;margin:12px 0}.bts-r4-diode td{padding:8px 4px;border:0}.bts-r4-diode td:before{content:attr(data-label) ": ";font-weight:bold}}