/* ── RESET & BASE ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Barlow',sans-serif;color:#3a3d45;background:#fff;line-height:1.6;font-size:15px}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

/* ── CSS VARS ── */
:root{
  --ink:#111214;--body:#3a3d45;--muted:#7a7f8e;
  --border:#e8eaef;--bg:#f9fafb;--white:#fff;
  --blue:#1a56db;--red:#e63946;--gold:#c8962a;--green:#1a7a3a;
  --surface:#f3f5fa;
}

/* ── BREADCRUMB ── */
.breadcrumb{
  padding:12px 40px;font-size:12px;color:var(--muted);
  background:var(--bg);border-bottom:1px solid var(--border);
}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb span{margin:0 6px}

/* ── HERO ── */
.hero{
  display:grid;grid-template-columns:1fr 1fr;
  gap:56px;padding:48px 40px;
  max-width:1200px;margin:0 auto;
}
@media(max-width:900px){.hero{grid-template-columns:1fr;padding:28px 20px;gap:32px}}

/* ── CAROUSEL (静态，无JS) ── */
.carousel{position:relative}
.carousel-main{
  background:linear-gradient(135deg,#f0f2f8,#e4e8f4);
  border-radius:14px;overflow:hidden;
  aspect-ratio:1;position:relative;
}
.carousel-slides{display:flex;height:100%}
.carousel-slide{
  width:100%;display:flex;
  align-items:center;justify-content:center;
  flex-direction:column;gap:12px;
  color:var(--muted);font-size:13px;
  padding:20px;text-align:center;
}
.carousel-slide .slide-icon{font-size:80px;line-height:1}
.carousel-slide img{
  width:100%;height:100%;
  object-fit:contain;position:absolute;top:0;left:0;
}
/* 隐藏控制按钮和点（无JS时不可用） */
.carousel-btn, .carousel-dots, .thumbs{display:none}

/* ── PRODUCT INFO ── */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  background:rgba(26,86,219,0.08);color:var(--blue);
  border:1px solid rgba(26,86,219,0.2);
  font-size:11px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;
  padding:4px 12px;border-radius:3px;margin-bottom:14px;
}
.product-title{
  font-family:'Barlow Condensed',sans-serif;
  font-size:clamp(28px,4vw,42px);font-weight:800;
  color:var(--ink);line-height:1.1;margin-bottom:8px;
}
.product-sub{font-size:15px;color:var(--muted);margin-bottom:20px}
.pills{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:22px}
.pill{
  background:var(--surface);border:1px solid var(--border);
  border-radius:20px;padding:5px 14px;
  font-size:13px;font-weight:500;
}
.price-box{
  background:var(--surface);border-radius:10px;
  padding:18px 22px;margin-bottom:22px;
  border:1px solid var(--border);
}
.price-lbl{font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:1px;margin-bottom:4px}
.price-val{
  font-family:'Barlow Condensed',sans-serif;
  font-size:26px;font-weight:800;color:var(--red);margin-bottom:6px;
}
.price-moq{font-size:13px;color:var(--body)}
.price-moq strong{color:var(--ink)}
.cta-row{display:flex;gap:12px;margin-bottom:22px;flex-wrap:wrap}
.btn-blue{
  flex:1;min-width:140px;background:var(--blue);color:white;
  border:none;border-radius:8px;padding:14px 22px;
  font-size:14px;font-weight:700;cursor:pointer;transition:background 0.2s;
  text-align:center;
}
.btn-blue:hover{background:#1447b5}
.btn-outline{
  flex:1;min-width:140px;background:white;color:var(--blue);
  border:2px solid var(--blue);border-radius:8px;padding:14px 22px;
  font-size:14px;font-weight:700;cursor:pointer;transition:all 0.2s;
  text-align:center;
}
.btn-outline:hover{background:rgba(26,86,219,0.05)}
.trust-row{display:flex;flex-wrap:wrap;gap:14px}
.trust-item{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--muted)}

/* ── CONTENT ── */
.content{max-width:1200px;margin:0 auto;padding:0 40px 80px}
@media(max-width:768px){.content{padding:0 20px 60px}}
.section{margin-bottom:52px}
.sec-label{
  font-size:11px;font-weight:700;letter-spacing:3px;
  text-transform:uppercase;color:var(--blue);margin-bottom:6px;
}
.sec-title{
  font-family:'Barlow Condensed',sans-serif;
  font-size:28px;font-weight:800;color:var(--ink);
  margin-bottom:14px;line-height:1.15;
}
.sec-body{font-size:15px;color:var(--body);line-height:1.8;margin-bottom:14px}
.divider{height:1px;background:var(--border);margin:40px 0}

/* ── FEATURE CARDS ── */
.feat-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));
  gap:18px;margin-top:24px;
}
.feat-card{
  background:var(--bg);border:1px solid var(--border);
  border-radius:10px;padding:22px;
  transition:border-color 0.2s,transform 0.15s;
}
.feat-card:hover{border-color:var(--blue);transform:translateY(-2px)}
.feat-icon{font-size:28px;margin-bottom:12px;display:block}
.feat-title{font-size:14px;font-weight:700;color:var(--ink);margin-bottom:6px}
.feat-desc{font-size:13px;color:var(--muted);line-height:1.6}

/* ── SPECS (使用details/summary) ── */
details.spec-details{
  border:1px solid var(--border);
  border-radius:10px;
  margin-top:16px;
}
details.spec-details summary{
  background:var(--ink);color:white;
  padding:16px 22px;
  font-size:14px;font-weight:700;
  cursor:pointer;
  list-style:none;
  border-radius:10px;
  position:relative;
}
details.spec-details summary::-webkit-details-marker{display:none}
details.spec-details summary::after{
  content:"▾";
  float:right;
  font-size:18px;
  transition:transform 0.25s;
}
details.spec-details[open] summary::after{
  transform:rotate(180deg);
}
table.spec{width:100%;border-collapse:collapse;font-size:14px}
table.spec tr:nth-child(even) td{background:var(--bg)}
table.spec tr:hover td{background:rgba(26,86,219,0.04)}
table.spec td{padding:13px 18px;border-bottom:1px solid var(--border);vertical-align:top}
table.spec td:first-child{color:var(--muted);font-weight:500;width:38%}
table.spec td:last-child{color:var(--ink);font-weight:600}
.hl{color:var(--blue)!important}

/* ── B2B STATS ── */
.b2b-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:16px;margin-top:22px;
}
.b2b-card{
  background:white;border:1px solid var(--border);
  border-radius:10px;padding:22px;text-align:center;
}
.b2b-num{
  font-family:'Barlow Condensed',sans-serif;
  font-size:38px;font-weight:800;color:var(--blue);line-height:1;margin-bottom:6px;
}
.b2b-lbl{font-size:12px;color:var(--muted);line-height:1.5}
.oem-list{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:10px;margin-top:16px;
}
.oem-item{
  display:flex;align-items:center;gap:8px;
  font-size:13px;color:var(--body);
  background:var(--bg);border:1px solid var(--border);
  border-radius:6px;padding:10px 14px;
}
.oem-item::before{content:"✦";color:var(--blue);flex-shrink:0}

/* ── ACCESSORIES ── */
.acc-grid{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.acc-chip{
  background:var(--bg);border:1px solid var(--border);
  border-radius:6px;padding:8px 16px;font-size:13px;
  display:flex;align-items:center;gap:6px;
}

/* ── FAQ (使用details/summary) ── */
.faq-list{margin-top:16px}
.faq-item{
  border-bottom:1px solid var(--border);
  padding:0;
}
.faq-item details{
  width:100%;
}
.faq-item summary{
  display:flex;justify-content:space-between;align-items:center;
  gap:12px;padding:18px 0;
  font-size:15px;font-weight:600;color:var(--ink);
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"▾";
  font-size:18px;
  color:var(--muted);
  transition:transform 0.2s;
}
.faq-item details[open] summary::after{
  transform:rotate(180deg);
}
.faq-a{
  padding:0 0 18px;
  font-size:14px;color:var(--body);line-height:1.8;
}

/* ── INQUIRY FORM ── */
.form-wrap{
  background:linear-gradient(135deg,#111214,#1a2540);
  border-radius:14px;padding:48px 40px;margin-top:52px;
}
@media(max-width:600px){.form-wrap{padding:32px 22px}}
.form-wrap h2{
  font-family:'Barlow Condensed',sans-serif;
  font-size:32px;font-weight:800;color:white;margin-bottom:8px;
}
.form-wrap p{color:#9aa0b8;font-size:14px;margin-bottom:28px}
.form-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
}
@media(max-width:600px){.form-grid{grid-template-columns:1fr}}
.form-field{display:flex;flex-direction:column;gap:6px}
.form-field.full{grid-column:1/-1}
.form-field label{font-size:12px;font-weight:600;color:#9aa0b8;letter-spacing:1px;text-transform:uppercase}
.form-field input,
.form-field select{
  background:rgba(255,255,255,0.07);
  border:1px solid rgba(255,255,255,0.12);
  border-radius:8px;padding:12px 16px;
  font-size:14px;color:white;font-family:'Barlow',sans-serif;
  outline:none;transition:border-color 0.2s;
  width:100%;
}
.form-field input::placeholder{color:rgba(255,255,255,0.3)}
.form-field input:focus,
.form-field select:focus{border-color:rgba(26,86,219,0.7);background:rgba(255,255,255,0.09)}
.form-field select option{background:#1a2540;color:white}
.form-submit{
  grid-column:1/-1;
  background:var(--blue);color:white;border:none;
  border-radius:8px;padding:16px 32px;
  font-size:15px;font-weight:700;cursor:pointer;
  font-family:'Barlow',sans-serif;
  transition:background 0.2s;width:100%;margin-top:4px;
}
.form-submit:hover{background:#1447b5}
.form-note{
  grid-column:1/-1;
  font-size:12px;color:#6b7590;text-align:center;margin-top:8px;
}

/* ── TAGS ── */
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.tag{
  font-size:12px;padding:4px 12px;border-radius:4px;
  background:var(--surface);border:1px solid var(--border);color:var(--muted);
}