:root{
  --graphite-900:#14171A; --graphite-800:#1C2024; --graphite-700:#2B3036;
  --steel-500:#5B646C; --steel-400:#8B949E; --steel-200:#C9CED2; --steel-100:#E7E9EA;
  --off-white:#F3F4F3; --taian-red:#C8102E; --taian-red-dark:#970D22; --safety-yellow:#F2B705;
  --font-display:'Oswald',sans-serif; --font-body:'IBM Plex Sans',sans-serif; --font-mono:'IBM Plex Mono',monospace;
}
*{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-body);background:var(--off-white);color:var(--graphite-900);line-height:1.5;-webkit-font-smoothing:antialiased;}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;letter-spacing:.01em;text-transform:uppercase;}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--taian-red);display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--taian-red);}
.hazard{height:10px;background:repeating-linear-gradient(135deg,var(--safety-yellow) 0 18px,var(--graphite-900) 18px 36px);}
header{position:sticky;top:0;z-index:50;background:var(--graphite-900);border-bottom:1px solid var(--graphite-700);}
.nav-row{display:flex;align-items:center;justify-content:space-between;height:76px;gap:24px;}
.brandmark{display:flex;align-items:center;gap:14px;}
.brandmark .dealer{color:var(--steel-200);font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;}
.brandmark .taian{color:#fff;font-family:var(--font-display);font-size:22px;letter-spacing:.06em;}
.brandmark .taian span{color:var(--taian-red);}
.backlink{color:var(--steel-200);font-family:var(--font-mono);font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;display:flex;align-items:center;gap:8px;}
.backlink:hover{color:#fff;}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-size:14px;letter-spacing:.05em;text-transform:uppercase;font-weight:600;padding:13px 26px;border:none;cursor:pointer;transition:.2s;white-space:nowrap;}
.btn-primary{background:var(--taian-red);color:#fff;}
.btn-primary:hover{background:var(--taian-red-dark);}
section{padding:56px 0;}
.section-head{max-width:680px;margin-bottom:44px;}
.section-head h1,.section-head h2{font-size:clamp(26px,3.4vw,36px);color:var(--graphite-900);margin-bottom:14px;}
.section-head p{color:var(--steel-500);font-size:15.5px;}
/* catalog grid */
.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--steel-200);border:1px solid var(--steel-200);}
.cat-card{background:#fff;display:flex;flex-direction:column;position:relative;}
.cat-card .n{position:absolute;top:0;left:0;background:var(--graphite-900);color:#fff;font-family:var(--font-mono);font-size:11px;padding:5px 10px;z-index:2;}
.cat-card .photo{aspect-ratio:4/3;overflow:hidden;background:var(--steel-100);}
.cat-card .photo img{width:100%;height:100%;object-fit:cover;transition:.25s;}
.cat-card:hover .photo img{transform:scale(1.05);}
.cat-card .body{padding:14px 16px 18px;flex:1;display:flex;flex-direction:column;gap:4px;}
.cat-card h3{font-size:14.5px;color:var(--graphite-900);letter-spacing:0;text-transform:none;font-family:var(--font-display);font-weight:600;}
.cat-card .en{font-family:var(--font-mono);font-size:10.5px;color:var(--steel-400);text-transform:uppercase;letter-spacing:.05em;}
.cat-card .short{font-size:12px;color:var(--steel-500);margin-top:6px;flex:1;}
.cat-card .go{margin-top:10px;font-family:var(--font-mono);font-size:11px;color:var(--taian-red);text-transform:uppercase;letter-spacing:.05em;}
/* detail page */
.detail-hero{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:start;}
.gallery{display:flex;flex-direction:column;gap:10px;}
.gallery .main-photo{aspect-ratio:4/3;overflow:hidden;background:#fff;border:1px solid var(--steel-200);}
.gallery .main-photo img{width:100%;height:100%;object-fit:contain;background:#fff;}
.detail-info h1{font-size:clamp(26px,3.2vw,34px);margin-bottom:6px;}
.detail-info .en{font-family:var(--font-mono);font-size:12px;color:var(--steel-400);text-transform:uppercase;letter-spacing:.06em;margin-bottom:18px;}
.detail-info p.desc{font-size:15.5px;color:var(--graphite-700);margin-bottom:22px;}
.compat-badges{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px;}
.compat-badges span{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;border:1px solid var(--steel-400);padding:7px 12px;color:var(--graphite-700);}
.note-box{background:#fff;border:1px dashed var(--steel-400);padding:16px 18px;font-size:13px;color:var(--steel-500);margin-bottom:22px;}
.note-box strong{color:var(--graphite-900);}
.table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--steel-200);margin-bottom:28px;}
table.spec-table{width:100%;border-collapse:collapse;font-family:var(--font-mono);font-size:13px;min-width:420px;}
.spec-table th,.spec-table td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--steel-200);}
.spec-table thead th{background:var(--graphite-900);color:#fff;font-family:var(--font-display);text-transform:uppercase;font-size:13px;letter-spacing:.04em;}
.spec-table tbody th{color:var(--steel-500);font-weight:500;text-transform:uppercase;font-size:11px;letter-spacing:.04em;}
.spec-table tbody tr:nth-child(even){background:var(--off-white);}
.mini-title{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--taian-red);margin:0 0 12px;}
.pager{display:flex;justify-content:space-between;margin-top:44px;padding-top:24px;border-top:1px solid var(--steel-200);font-family:var(--font-mono);font-size:12.5px;text-transform:uppercase;letter-spacing:.04em;}
.pager a{color:var(--graphite-700);}
.pager a:hover{color:var(--taian-red);}
footer{background:var(--graphite-900);border-top:1px solid var(--graphite-700);padding:26px 0;}
.footer-row{display:flex;justify-content:space-between;align-items:center;color:var(--steel-400);font-size:12px;flex-wrap:wrap;gap:10px;}
@media (max-width:960px){
  .cat-grid{grid-template-columns:repeat(2,1fr);}
  .detail-hero{grid-template-columns:1fr;}
}