/* Inter 本地自托管（2026-10-24：去 Google Fonts，消字体迟到跳动） */
@font-face{font-family:Inter;font-style:normal;font-weight:400;font-display:swap;src:url("/assets/fonts/inter-400.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:500;font-display:swap;src:url("/assets/fonts/inter-500.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:600;font-display:swap;src:url("/assets/fonts/inter-600.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:700;font-display:swap;src:url("/assets/fonts/inter-700.woff2") format("woff2")}
@font-face{font-family:Inter;font-style:normal;font-weight:800;font-display:swap;src:url("/assets/fonts/inter-800.woff2") format("woff2")}

/* ============================================================
   GULONG B2B prototype — M1 (Navy #1B3A5C / Orange action / Gold accent)
   ============================================================ */
:root{
  --navy:#1B3A5C; --navy-deep:#142C47; --navy-soft:#24486E;
  --orange:#F0731F; --orange-soft:#FDF0E5;
  --gold:#C9A227; --gold-soft:#F7EFD8;
  --bg:#F3F5F8; --card:#FFFFFF; --line:#E3E8EE;
  --text:#1D2733; --muted:#6B7885;
  --chip-bg:#EAF0F6; --chip-text:#2C5A86;
  --heat-bg:#FDF0E5; --heat-text:#C2560C;
  --ok:#2E8B57;
  --radius:14px;
  font-family:'Inter',-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-size:15px;line-height:1.55}
a{color:inherit;text-decoration:none}
img,svg{display:block}
h1,h2,h3,h4{margin:0;line-height:1.3}
p{margin:0}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px}
.container{max-width:1180px;margin:0 auto;padding:0 22px}

/* ── Top bar ── */
.topbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(16,30,48,.18)}
.topbar-in{display:flex;align-items:center;gap:26px;height:62px}
.logo{display:flex;flex-direction:column;line-height:1.1}
.logo strong{font-size:17px;font-weight:800;letter-spacing:.07em}
.logo small{font-size:10px;color:#9FB4C9;letter-spacing:.05em}
.nav{display:flex;gap:4px;flex:1}
.nav a{padding:8px 14px;border-radius:8px;font-size:14px;font-weight:600;color:#C9D8E6}
.nav a:hover{background:rgba(255,255,255,.09);color:#fff}
.nav a.is-on{background:var(--orange);color:#fff}
.top-actions{display:flex;align-items:center;gap:14px}
.icon-btn{position:relative;background:none;border:0;color:#C9D8E6;display:flex;padding:6px}
.icon-btn:hover{color:#fff}
.icon-btn svg{width:21px;height:21px}
.bag-count{position:absolute;top:-2px;right:-4px;background:var(--orange);color:#fff;font-size:10px;font-weight:800;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px}
.search-box{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.1);border-radius:8px;padding:7px 10px;color:#9FB4C9}
.search-box input{background:none;border:0;outline:0;color:#fff;width:150px}
.search-box input::placeholder{color:#8AA3BC}
.seg{display:flex;gap:6px;padding:9px 0;background:var(--navy-deep)}
.seg a{padding:6px 13px;border-radius:999px;font-size:12.5px;font-weight:600;color:#C9D8E6}
.seg a.is-on{background:var(--orange);color:#fff}

/* ── Page head ── */
.page-head{padding:26px 0 6px}
.page-head h1{font-size:24px;font-weight:800}
.page-head p{color:var(--muted);font-size:13.5px;margin-top:4px}
.crumbs{font-size:12.5px;color:var(--muted);margin-top:14px}
.crumbs a{color:var(--chip-text)}
.crumbs b{color:var(--text)}

/* ── Layout: rail + list ── */
.cat-wrap{display:flex;gap:20px;align-items:flex-start;padding:16px 0 40px}
.rail{width:212px;flex:none;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;position:sticky;top:120px}
.rail-info{padding:10px;border-bottom:1px dashed var(--line);display:flex;flex-direction:column;gap:4px}
.ri{display:flex;align-items:center;gap:9px;padding:8px 9px;border-radius:9px;font-size:12.5px;font-weight:700;color:var(--chip-text)}
.ri:hover{background:var(--chip-bg)}
.ri svg{width:16px;height:16px;flex:none}
.ri small{display:block;font-weight:500;color:var(--muted);font-size:11px}
.rail-cats{padding:8px}
.rc{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:none;border:0;padding:10px 10px;border-radius:10px;font-size:13.5px;font-weight:700;color:var(--muted);position:relative}
.rc small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.rc svg{width:17px;height:17px;flex:none}
.rc:hover{background:var(--bg)}
.rc.is-active{background:var(--navy);color:#fff}
.rc.is-active small{color:#A9BFD3}
.rc .rc-n{margin-left:auto;font-size:11px;font-weight:700;color:var(--muted)}
.rc.is-active .rc-n{color:#F5C77E}

/* ── Filter chips ── */
.list-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:4px 2px 10px}
.list-head h2{font-size:19px;font-weight:800}
.chips-filter{display:flex;gap:7px;flex-wrap:wrap;padding:0 2px 14px}
.fchip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:6px 13px;font-size:12.5px;font-weight:600;color:var(--muted)}
.fchip.is-on{background:var(--navy);border-color:var(--navy);color:#fff}

/* ── Product cards (single column rows) ── */
.plist{display:flex;flex-direction:column;gap:14px;flex:1;min-width:0}
.prow{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:box-shadow .15s}
.prow:hover{box-shadow:0 6px 18px rgba(20,44,71,.1)}
.thumb{position:relative;flex:none;width:132px;height:132px;border-radius:11px;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}
.thumb svg{width:104px;height:104px}
.corner-tag{position:absolute;top:9px;left:9px;background:linear-gradient(135deg,#F08A2B,#E85D04);color:#fff;font-size:10px;font-weight:800;padding:3px 8px;border-radius:7px;letter-spacing:.03em}
.corner-tag.gold{background:linear-gradient(135deg,#D9B23C,#B8912A)}
.pinfo{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}
.pinfo h3{font-size:16.5px;font-weight:800;letter-spacing:.01em}
.pinfo h3 .series-no{color:var(--orange)}
.pdesc{font-size:12.5px;color:var(--muted)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:700;padding:2.5px 8px;border-radius:6px}
.chip.cert{background:var(--chip-bg);color:var(--chip-text);border:1px solid #D5E2EE}
.chip.heat{background:var(--heat-bg);color:var(--heat-text)}
.chip.reg{background:var(--gold-soft);color:#8A6D14;border:1px solid #E4D193}
.chip svg{width:11px;height:11px}
.price-row{margin-top:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap}
.price strong{font-size:20px;font-weight:800;letter-spacing:-.01em}
.price small{font-size:11px;color:var(--muted);font-weight:600;margin-left:4px}
.tier-note{font-size:11.5px;color:var(--muted);font-weight:600}
.tier-note b{color:var(--text)}
.add-btn{width:40px;height:40px;border-radius:50%;border:0;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center;flex:none;box-shadow:0 3px 10px rgba(240,115,31,.35)}
.add-btn:hover{background:#DE640F}
.add-btn svg{width:19px;height:19px}
.opt-pill{border:0;border-radius:999px;padding:11px 16px;background:var(--navy);color:#fff;font-weight:700;font-size:13px;white-space:nowrap}
.opt-pill:hover{background:var(--navy-soft)}
.moq-tag{font-size:11px;color:var(--muted);font-weight:600}
.moq-tag b{color:var(--chip-text)}

/* ── Sticky bottom inquiry bar ── */
.bottombar{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--navy);color:#fff;box-shadow:0 -6px 20px rgba(16,30,48,.22)}
.bottombar-in{display:flex;align-items:center;gap:14px;padding:11px 0}
.bag{display:flex;align-items:center;gap:11px;flex:1;min-width:0}
.bag>svg{width:24px;height:24px;color:var(--orange);flex:none}
.bag strong{display:block;font-size:14px;font-weight:800}
.bag small{font-size:11.5px;color:#9FB4C9;font-weight:600}
.submit{border:0;border-radius:999px;padding:13px 26px;min-width:190px;text-align:center;font-weight:800;font-size:14px;background:var(--btn-off,#5A718A);color:#fff}
.submit.is-ready{background:var(--orange)}
.submit.is-ready:hover{background:#DE640F}
.bodyspace{height:64px}

/* ── Detail page ── */
.hero{background:linear-gradient(150deg,var(--navy) 0%,var(--navy-deep) 100%);color:#fff;padding:34px 0 30px}
.hero-grid{display:flex;gap:34px}
.hero-media{flex:none;width:400px}
.hero-shot{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;height:300px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.hero-shot svg{width:230px;height:230px}
.hero-shot .ph-label{position:absolute;bottom:10px;right:14px;font-size:10px;letter-spacing:.14em;color:#7E99B5;font-weight:700}
.hero-thumbs{display:flex;gap:9px;margin-top:11px}
.hero-thumbs .hthumb{width:64px;height:64px;border-radius:10px;background:rgba(255,255,255,.07);border:1.5px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;cursor:pointer}
.hero-thumbs .hthumb.is-on{border-color:var(--orange)}
.hero-thumbs svg{width:46px;height:46px}
.hero-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}
.kicker{font-size:11px;font-weight:800;letter-spacing:.16em;color:#F5C77E}
.hero-info h1{font-size:27px;font-weight:800}
.hero-info h1 .series-no{color:#F5A55C}
.hero-sub{color:#B9CBDC;font-size:14px;max-width:560px}
.hero-chips{display:flex;gap:7px;flex-wrap:wrap}
.hero-chips .chip{background:rgba(255,255,255,.1);color:#DCE7F1;border:1px solid rgba(255,255,255,.18)}
.tier-table{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:13px;overflow:hidden;width:100%;max-width:520px}
.tier-table table{width:100%;border-collapse:collapse;font-size:13.5px}
.tier-table th{text-align:left;padding:9px 14px;color:#9FB4C9;font-weight:600;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase}
.tier-table td{padding:10px 14px;border-top:1px solid rgba(255,255,255,.1)}
.tier-table .tp{font-weight:800;font-size:16px}
.tier-table tr.is-rec td{background:rgba(240,115,31,.13)}
.tier-note-hero{font-size:12px;color:#9FB4C9;margin-top:8px}
.spec-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px 0;max-width:520px;width:100%}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:8px 16px;font-size:13.5px}
.spec-row:nth-child(odd){background:#F7F9FB}
.spec-row b{color:var(--muted);font-weight:600;flex:none;width:150px}
.spec-row span{text-align:right}
.variant-pick{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.vfield label{display:block;font-size:11px;font-weight:700;color:var(--muted);letter-spacing:.05em;text-transform:uppercase;margin-bottom:5px}
.vfield select{padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;min-width:150px;color:var(--text);font-weight:600;outline:none}
.vfield select:focus{border-color:var(--navy)}
.section{padding:30px 0}
.section>h2{font-size:20px;font-weight:800;margin-bottom:16px}
.section>h2 .gold-bar{display:inline-block;width:26px;height:5px;border-radius:3px;background:var(--gold);margin-right:10px;vertical-align:middle}
.two-col{display:grid;grid-template-columns:1fr 380px;gap:26px;align-items:start}
.faq{display:flex;flex-direction:column;gap:9px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 16px}
.faq summary{padding:14px 0;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:19px;color:var(--orange);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq .fa-body{padding:0 0 14px;color:var(--muted);font-size:13.5px}
.oem-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.oem-step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.oem-step .num{width:30px;height:30px;border-radius:50%;background:var(--gold-soft);color:#8A6D14;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px;margin-bottom:10px;border:1px solid #E4D193}
.oem-step h4{font-size:14.5px;margin-bottom:5px}
.oem-step p{font-size:12.5px;color:var(--muted)}
.cert-strip{display:flex;gap:10px;flex-wrap:wrap}
.cert-big{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 18px;display:flex;align-items:center;gap:10px;font-weight:800;font-size:13.5px}
.cert-big svg{width:18px;height:18px;color:var(--gold)}

/* ── Inquiry page ── */
.inq-grid{display:grid;grid-template-columns:1fr 360px;gap:24px;align-items:start;padding-bottom:90px}
.inq-table{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.inq-table table{width:100%;border-collapse:collapse;font-size:13.5px}
.inq-table th{background:var(--navy);color:#fff;text-align:left;padding:11px 14px;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;font-weight:700}
.inq-table td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:middle}
.inq-table .m{font-weight:800}
.inq-table .s{color:var(--muted);font-size:12px}
.qty{display:inline-flex;align-items:center;gap:3px;background:var(--orange-soft);border-radius:999px;padding:3px}
.qty button{width:24px;height:24px;border-radius:50%;border:0;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center}
.qty button svg{width:12px;height:12px}
.qty b{min-width:46px;text-align:center;font-size:13px;color:var(--heat-text)}
.qty input{width:52px;border:1px solid var(--line);border-radius:8px;padding:5px 6px;text-align:center;font-weight:700;color:var(--text)}
.del-btn{background:none;border:0;color:var(--muted);padding:5px}
.del-btn:hover{color:#C0392B}
.del-btn svg{width:16px;height:16px}
.inq-empty{padding:38px;text-align:center;color:var(--muted)}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.form-card h3{font-size:16px;font-weight:800;margin-bottom:14px}
.frow{margin-bottom:12px}
.frow label{display:block;font-size:11.5px;font-weight:700;color:var(--muted);letter-spacing:.05em;text-transform:uppercase;margin-bottom:5px}
.frow input,.frow textarea,.frow select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;outline:0;color:var(--text);background:#fff}
.frow input:focus,.frow textarea:focus{border-color:var(--navy)}
.frow textarea{min-height:88px;resize:vertical}
.btn-primary{width:100%;border:0;border-radius:10px;padding:13px;background:var(--orange);color:#fff;font-weight:800;font-size:14.5px}
.btn-primary:hover{background:#DE640F}
.btn-primary:disabled{background:#C3CCD5;cursor:not-allowed}
.form-note{font-size:11.5px;color:var(--muted);margin-top:9px;text-align:center}
.success-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:44px 30px;text-align:center}
.success-panel .ok-ic{width:58px;height:58px;border-radius:50%;background:#E6F4EC;color:var(--ok);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.success-panel .ok-ic svg{width:28px;height:28px}
.success-panel h2{font-size:21px;margin-bottom:8px}
.success-panel p{color:var(--muted);font-size:14px}
.wa-btn{display:inline-flex;align-items:center;gap:8px;margin-top:16px;border:1.5px solid var(--navy);color:var(--navy);border-radius:10px;padding:10px 18px;font-weight:700;font-size:13.5px}
.totals{background:var(--navy);color:#fff;border-radius:var(--radius);padding:16px 18px;display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.totals strong{font-size:15px}
.totals small{display:block;color:#9FB4C9;font-size:11.5px;font-weight:600}

/* ── Footer ── */
.foot{background:var(--navy-deep);color:#8AA3BC;padding:26px 0;margin-top:20px;font-size:12.5px}
.foot-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot b{color:#DCE7F1}

/* ── Responsive ── */
@media (max-width:900px){
  .nav{display:none}
  .search-box input{width:90px}
  .cat-wrap{flex-direction:column}
  .rail{width:100%;position:static}
  .rail-cats{display:flex;overflow-x:auto;gap:4px}
  .rc{flex:none;width:auto}
  .rc small{display:none}
  .hero-grid{flex-direction:column}
  .hero-media{width:100%}
  .two-col,.inq-grid{grid-template-columns:1fr}
  .oem-steps{grid-template-columns:1fr}
  .prow{flex-direction:row}
  .thumb{width:104px;height:104px}
}
@media (max-width:560px){
  .thumb{width:88px;height:88px}
  .thumb svg{width:70px;height:70px}
  .price-row{flex-direction:column;align-items:flex-start}
}

/* ============================================================
   v2 桌面高密度网格（>1024px 优先）
   ============================================================ */
.trustbar{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 18px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin:14px 0 16px}
.trustbar .tb-item{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--navy)}
.trustbar .tb-item svg{width:17px;height:17px;color:var(--gold)}
.trustbar .tb-item small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.trustbar .tb-sep{width:1px;height:26px;background:var(--line)}

.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;overflow:hidden;transition:box-shadow .15s,border-color .15s;position:relative}
.pcard:hover{box-shadow:0 6px 16px rgba(20,44,71,.1)}
.pcard.is-checked{border-color:var(--orange);box-shadow:0 0 0 1.5px var(--orange)}
.pcard-media{height:158px;background:#fff;display:flex;align-items:center;justify-content:center;position:relative;border-bottom:1px solid var(--line)}
.pcard-media svg{width:88px;height:88px}
.pcard-media .corner-tag{top:8px;left:8px}
.pcard-body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.pcard-body h3{font-size:15.5px;font-weight:800}
.pcard-body h3 .series-no{color:var(--orange)}
.pcard-name{font-size:11.5px;color:var(--muted);line-height:1.4;min-height:31px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pcard-params{display:flex;gap:5px;flex-wrap:wrap}
.pcard-params .pp{font-size:11px;font-weight:700;background:var(--bg);border:1px solid var(--line);color:var(--chip-text);border-radius:5px;padding:1.5px 7px}
.pcard-tier{font-size:11.5px;color:var(--muted);font-weight:600;border-top:1px dashed var(--line);padding-top:7px;display:flex;flex-direction:column;gap:2px}
.pcard-tier .tp-row{display:flex;justify-content:space-between;gap:6px}
.pcard-tier .tp-row em{font-style:normal;font-weight:800;color:var(--text)}
.pcard-tier .tp-row.is-rec em{color:var(--orange)}
.pcard-foot{margin-top:auto;display:flex;align-items:center;gap:8px;padding-top:9px;border-top:1px solid var(--line)}
.pcard-check{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:700;color:var(--muted);cursor:pointer;user-select:none}
.pcard-check input{width:16px;height:16px;accent-color:var(--orange);cursor:pointer}
.pcard-moq{font-size:10.5px;color:var(--muted)}
.pcard-btns{margin-left:auto;display:flex;gap:6px}
.pcard-btns .opt-pill{padding:8px 11px;font-size:11.5px}
.pcard-btns .add-btn{width:32px;height:32px}
.pcard-btns .add-btn svg{width:15px;height:15px}

/* 批量工具栏（右下悬浮胶囊） */
.bulkbar{position:fixed;right:26px;bottom:24px;z-index:70;background:var(--navy);color:#fff;border-radius:14px;box-shadow:0 10px 30px rgba(16,30,48,.35);padding:12px 16px;display:flex;align-items:center;gap:14px;transform:translateY(120%);opacity:0;transition:all .2s}
.bulkbar.is-show{transform:none;opacity:1}
.bulkbar .bk-txt strong{font-size:14.5px;font-weight:800;display:block}
.bulkbar .bk-txt small{font-size:11px;color:#9FB4C9;font-weight:600}
.bulkbar .bk-btn{border:0;border-radius:10px;padding:10px 16px;font-weight:800;font-size:13px;background:var(--orange);color:#fff;white-space:nowrap}
.bulkbar .bk-btn:hover{background:#DE640F}
.bulkbar .bk-clear{background:none;border:0;color:#9FB4C9;font-size:12px;font-weight:600;padding:6px}
.bulkbar .bk-clear:hover{color:#fff}

/* ============================================================
   v3 去价格化（B2B 询盘收集器模式）
   ============================================================ */
.pcard-caps{display:flex;gap:5px;flex-wrap:wrap}
.pcard-caps .cap{font-size:10.5px;font-weight:700;background:var(--gold-soft);border:1px solid #E4D193;color:#8A6D14;border-radius:5px;padding:1.5px 7px}
.pcard-caps .cap.plain{background:var(--bg);border-color:var(--line);color:var(--muted)}
.pcard-btns .btn-add{border:0;border-radius:9px;padding:8px 13px;background:var(--orange);color:#fff;font-weight:800;font-size:11.5px;white-space:nowrap}
.pcard-btns .btn-add:hover{background:#DE640F}
.quote-flow{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:13px;padding:16px 18px;max-width:520px;width:100%}
.quote-flow h3{font-size:14px;font-weight:800;color:#fff;margin-bottom:10px}
.quote-flow .qf-step{display:flex;gap:10px;align-items:flex-start;padding:6px 0;font-size:13px;color:#C9D8E6}
.quote-flow .qf-step .qn{flex:none;width:22px;height:22px;border-radius:50%;background:var(--orange);color:#fff;font-weight:800;font-size:12px;display:flex;align-items:center;justify-content:center}
.quote-flow .qf-note{margin-top:9px;font-size:11.5px;color:#9FB4C9}
.bottombar .bk-inline{border:1.5px solid var(--orange);background:rgba(240,115,31,.14);color:#FFB37E;border-radius:10px;padding:10px 16px;font-weight:800;font-size:13px;white-space:nowrap}
.bottombar .bk-inline:hover{background:var(--orange);color:#fff}

/* ============================================================
   v4 DJI 色调（黑白灰科技感，参考 dji.com）
   ============================================================ */
:root{
  --navy:#14171C; --navy-deep:#0B0D10; --navy-soft:#23282E;
  --orange:#14171C; --orange-soft:#EEF0F2;
  --gold:#6E7377; --gold-soft:#F0F1F3;
  --chip-bg:#F0F2F4; --chip-text:#3A4046;
  --heat-bg:#EEF0F2; --heat-text:#3A4046;
  --bg:#F5F6F7; --line:#E6E8EB; --text:#1A1F24; --muted:#6E7377;
}
body{font-weight:400;letter-spacing:.01em}
/* 顶栏纯黑 */
.topbar{background:#0B0D10;box-shadow:none;border-bottom:1px solid rgba(255,255,255,.08)}
.topbar-in .nav a{color:#A8AEB5}
.topbar-in .nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.topbar-in .nav a.is-on{background:#fff;color:#0B0D10}
.search-box{background:rgba(255,255,255,.07)}
.bag-count{background:#fff;color:#0B0D10}
/* 角标黑底白字 */
.corner-tag{background:#0B0D10;color:#fff;letter-spacing:.08em}
.corner-tag.gold{background:#3A4046}
/* 按钮：黑底白字 */
.add-btn,.btn-add,.btn-primary{background:#14171C;box-shadow:none}
.add-btn:hover,.btn-add:hover,.btn-primary:hover{background:#2A2F36}
.opt-pill{background:#fff;color:#14171C;border:1.5px solid #14171C}
.opt-pill:hover{background:#14171C;color:#fff}
.submit{background:#3A4046}
.submit.is-ready{background:#14171C}
.submit.is-ready:hover{background:#2A2F36}
/* 选中态：黑框 */
.pcard.is-checked{border-color:#14171C;box-shadow:0 0 0 1.5px #14171C}
.pcard-check input{accent-color:#14171C}
/* 卡片图：白底铺满 */
.pcard-media{overflow:hidden;background:#FFFFFF;border-bottom:1px solid var(--line)}
.pcard-media img{width:100%;height:100%;object-fit:contain;padding:8px;transition:transform .25s}
.pcard:hover .pcard-media img{transform:scale(1.03)}
/* 系列号去彩色 */
.series-no{color:#14171C !important}
/* hero 全黑 + 大图 */
.hero{background:linear-gradient(150deg,#14171C,#0B0D10)}
.hero-shot{background:#fff;border:0}
.hero-shot img{width:100%;height:100%;object-fit:contain;padding:14px}
.hero-thumbs .hthumb{background:#fff;border:1.5px solid rgba(255,255,255,.2)}
.hero-thumbs .hthumb.is-on{border-color:#fff}
.hero-thumbs .hthumb img{width:100%;height:100%;object-fit:contain;padding:5px;border-radius:9px;background:#fff}
.kicker{color:#A8AEB5}
.hero-info h1 .series-no{color:#fff !important}
.tier-table,.quote-flow{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
.quote-flow .qn{background:#fff;color:#0B0D10}
.quote-flow .qf-note b{color:#fff}
/* 徽章灰 */
.chip.cert{background:#fff;color:#3A4046;border:1px solid var(--line)}
.chip.reg{background:#EEF0F2;color:#3A4046;border:1px solid var(--line)}
.chip.reg svg{color:#6E7377}
.cert-big{border-color:var(--line)}
.cert-big svg{color:#3A4046}
/* 能力标签 */
.pcard-caps .cap{background:#F0F1F3;border-color:#E6E8EB;color:#3A4046}
.pcard-caps .cap.plain{background:#fff;color:#6E7377}
/* 信任横幅黑白 */
.trustbar .tb-item{color:#14171C}
.trustbar .tb-item svg{color:#14171C}
.trustbar .tb-sep{background:var(--line)}
/* 分类选中黑 */
.rc.is-active{background:#14171C;color:#fff}
.rc.is-active small{color:#A8AEB5}
.rc.is-active .rc-n{color:#fff}
.rc.is-active::before{background:#fff}
.fchip.is-on{background:#14171C;border-color:#14171C}
/* 底部 footer 更深 */
.foot{background:#0B0D10;color:#7A828A}
.foot b{color:#E6E8EB}
/* 数量步进 */
.qty{background:#EEF0F2}
.qty button{background:#14171C}
.qty b{color:#14171C}

/* 语言切换 pill */
.lang{border:1px solid rgba(255,255,255,.25);color:#C9D8E6;font-size:12px;font-weight:700;padding:5px 11px;border-radius:999px}
.lang:hover{border-color:#fff;color:#fff}
/* ============================================================
   GULONG B2B prototype — M1 (Navy #1B3A5C / Orange action / Gold accent)
   ============================================================ */
:root{
  --navy:#1B3A5C; --navy-deep:#142C47; --navy-soft:#24486E;
  --orange:#F0731F; --orange-soft:#FDF0E5;
  --gold:#C9A227; --gold-soft:#F7EFD8;
  --bg:#F3F5F8; --card:#FFFFFF; --line:#E3E8EE;
  --text:#1D2733; --muted:#6B7885;
  --chip-bg:#EAF0F6; --chip-text:#2C5A86;
  --heat-bg:#FDF0E5; --heat-text:#C2560C;
  --ok:#2E8B57;
  --radius:14px;
  font-family:'Inter',-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-size:15px;line-height:1.55}
a{color:inherit;text-decoration:none}
img,svg{display:block}
h1,h2,h3,h4{margin:0;line-height:1.3}
p{margin:0}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit;font-size:15px}
.container{max-width:1180px;margin:0 auto;padding:0 22px}

/* ── Top bar ── */
.topbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 10px rgba(16,30,48,.18)}
.topbar-in{display:flex;align-items:center;gap:26px;height:62px}
.logo{display:flex;flex-direction:column;line-height:1.1}
.logo strong{font-size:17px;font-weight:800;letter-spacing:.07em}
.logo small{font-size:10px;color:#9FB4C9;letter-spacing:.05em}
.nav{display:flex;gap:4px;flex:1}
.nav a{padding:8px 14px;border-radius:8px;font-size:14px;font-weight:600;color:#C9D8E6}
.nav a:hover{background:rgba(255,255,255,.09);color:#fff}
.nav a.is-on{background:var(--orange);color:#fff}
.top-actions{display:flex;align-items:center;gap:14px}
.icon-btn{position:relative;background:none;border:0;color:#C9D8E6;display:flex;padding:6px}
.icon-btn:hover{color:#fff}
.icon-btn svg{width:21px;height:21px}
.bag-count{position:absolute;top:-2px;right:-4px;background:var(--orange);color:#fff;font-size:10px;font-weight:800;min-width:16px;height:16px;border-radius:8px;display:flex;align-items:center;justify-content:center;padding:0 4px}
.search-box{display:flex;align-items:center;gap:6px;background:rgba(255,255,255,.1);border-radius:8px;padding:7px 10px;color:#9FB4C9}
.search-box input{background:none;border:0;outline:0;color:#fff;width:150px}
.search-box input::placeholder{color:#8AA3BC}
.seg{display:flex;gap:6px;padding:9px 0;background:var(--navy-deep)}
.seg a{padding:6px 13px;border-radius:999px;font-size:12.5px;font-weight:600;color:#C9D8E6}
.seg a.is-on{background:var(--orange);color:#fff}

/* ── Page head ── */
.page-head{padding:26px 0 6px}
.page-head h1{font-size:24px;font-weight:800}
.page-head p{color:var(--muted);font-size:13.5px;margin-top:4px}
.crumbs{font-size:12.5px;color:var(--muted);margin-top:14px}
.crumbs a{color:var(--chip-text)}
.crumbs b{color:var(--text)}

/* ── Layout: rail + list ── */
.cat-wrap{display:flex;gap:20px;align-items:flex-start;padding:16px 0 40px}
.rail{width:212px;flex:none;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;position:sticky;top:120px}
.rail-info{padding:10px;border-bottom:1px dashed var(--line);display:flex;flex-direction:column;gap:4px}
.ri{display:flex;align-items:center;gap:9px;padding:8px 9px;border-radius:9px;font-size:12.5px;font-weight:700;color:var(--chip-text)}
.ri:hover{background:var(--chip-bg)}
.ri svg{width:16px;height:16px;flex:none}
.ri small{display:block;font-weight:500;color:var(--muted);font-size:11px}
.rail-cats{padding:8px}
.rc{display:flex;align-items:center;gap:10px;width:100%;text-align:left;background:none;border:0;padding:10px 10px;border-radius:10px;font-size:13.5px;font-weight:700;color:var(--muted);position:relative}
.rc small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.rc svg{width:17px;height:17px;flex:none}
.rc:hover{background:var(--bg)}
.rc.is-active{background:var(--navy);color:#fff}
.rc.is-active small{color:#A9BFD3}
.rc .rc-n{margin-left:auto;font-size:11px;font-weight:700;color:var(--muted)}
.rc.is-active .rc-n{color:#F5C77E}

/* ── Filter chips ── */
.list-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;padding:4px 2px 10px}
.list-head h2{font-size:19px;font-weight:800}
.chips-filter{display:flex;gap:7px;flex-wrap:wrap;padding:0 2px 14px}
.fchip{border:1px solid var(--line);background:var(--card);border-radius:999px;padding:6px 13px;font-size:12.5px;font-weight:600;color:var(--muted)}
.fchip.is-on{background:var(--navy);border-color:var(--navy);color:#fff}

/* ── Product cards (single column rows) ── */
.plist{display:flex;flex-direction:column;gap:14px;flex:1;min-width:0}
.prow{display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;transition:box-shadow .15s}
.prow:hover{box-shadow:0 6px 18px rgba(20,44,71,.1)}
.thumb{position:relative;flex:none;width:132px;height:132px;border-radius:11px;background:#fff;border:1px solid var(--line);display:flex;align-items:center;justify-content:center;overflow:hidden}
.thumb svg{width:104px;height:104px}
.corner-tag{position:absolute;top:9px;left:9px;background:linear-gradient(135deg,#F08A2B,#E85D04);color:#fff;font-size:10px;font-weight:800;padding:3px 8px;border-radius:7px;letter-spacing:.03em}
.corner-tag.gold{background:linear-gradient(135deg,#D9B23C,#B8912A)}
.pinfo{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px}
.pinfo h3{font-size:16.5px;font-weight:800;letter-spacing:.01em}
.pinfo h3 .series-no{color:var(--orange)}
.pdesc{font-size:12.5px;color:var(--muted)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{display:inline-flex;align-items:center;gap:4px;font-size:11.5px;font-weight:700;padding:2.5px 8px;border-radius:6px}
.chip.cert{background:var(--chip-bg);color:var(--chip-text);border:1px solid #D5E2EE}
.chip.heat{background:var(--heat-bg);color:var(--heat-text)}
.chip.reg{background:var(--gold-soft);color:#8A6D14;border:1px solid #E4D193}
.chip svg{width:11px;height:11px}
.price-row{margin-top:auto;display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap}
.price strong{font-size:20px;font-weight:800;letter-spacing:-.01em}
.price small{font-size:11px;color:var(--muted);font-weight:600;margin-left:4px}
.tier-note{font-size:11.5px;color:var(--muted);font-weight:600}
.tier-note b{color:var(--text)}
.add-btn{width:40px;height:40px;border-radius:50%;border:0;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center;flex:none;box-shadow:0 3px 10px rgba(240,115,31,.35)}
.add-btn:hover{background:#DE640F}
.add-btn svg{width:19px;height:19px}
.opt-pill{border:0;border-radius:999px;padding:11px 16px;background:var(--navy);color:#fff;font-weight:700;font-size:13px;white-space:nowrap}
.opt-pill:hover{background:var(--navy-soft)}
.moq-tag{font-size:11px;color:var(--muted);font-weight:600}
.moq-tag b{color:var(--chip-text)}

/* ── Sticky bottom inquiry bar ── */
.bottombar{position:fixed;left:0;right:0;bottom:0;z-index:60;background:var(--navy);color:#fff;box-shadow:0 -6px 20px rgba(16,30,48,.22)}
.bottombar-in{display:flex;align-items:center;gap:14px;padding:11px 0}
.bag{display:flex;align-items:center;gap:11px;flex:1;min-width:0}
.bag>svg{width:24px;height:24px;color:var(--orange);flex:none}
.bag strong{display:block;font-size:14px;font-weight:800}
.bag small{font-size:11.5px;color:#9FB4C9;font-weight:600}
.submit{border:0;border-radius:999px;padding:13px 26px;min-width:190px;text-align:center;font-weight:800;font-size:14px;background:var(--btn-off,#5A718A);color:#fff}
.submit.is-ready{background:var(--orange)}
.submit.is-ready:hover{background:#DE640F}
.bodyspace{height:64px}

/* ── Detail page ── */
.hero{background:linear-gradient(150deg,var(--navy) 0%,var(--navy-deep) 100%);color:#fff;padding:34px 0 30px}
.hero-grid{display:flex;gap:34px}
.hero-media{flex:none;width:400px}
.hero-shot{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;height:300px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.hero-shot svg{width:230px;height:230px}
.hero-shot .ph-label{position:absolute;bottom:10px;right:14px;font-size:10px;letter-spacing:.14em;color:#7E99B5;font-weight:700}
.hero-thumbs{display:flex;gap:9px;margin-top:11px}
.hero-thumbs .hthumb{width:64px;height:64px;border-radius:10px;background:rgba(255,255,255,.07);border:1.5px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;cursor:pointer}
.hero-thumbs .hthumb.is-on{border-color:var(--orange)}
.hero-thumbs svg{width:46px;height:46px}
.hero-info{flex:1;min-width:0;display:flex;flex-direction:column;gap:12px}
.kicker{font-size:11px;font-weight:800;letter-spacing:.16em;color:#F5C77E}
.hero-info h1{font-size:27px;font-weight:800}
.hero-info h1 .series-no{color:#F5A55C}
.hero-sub{color:#B9CBDC;font-size:14px;max-width:560px}
.hero-chips{display:flex;gap:7px;flex-wrap:wrap}
.hero-chips .chip{background:rgba(255,255,255,.1);color:#DCE7F1;border:1px solid rgba(255,255,255,.18)}
.tier-table{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:13px;overflow:hidden;width:100%;max-width:520px}
.tier-table table{width:100%;border-collapse:collapse;font-size:13.5px}
.tier-table th{text-align:left;padding:9px 14px;color:#9FB4C9;font-weight:600;font-size:11.5px;letter-spacing:.05em;text-transform:uppercase}
.tier-table td{padding:10px 14px;border-top:1px solid rgba(255,255,255,.1)}
.tier-table .tp{font-weight:800;font-size:16px}
.tier-table tr.is-rec td{background:rgba(240,115,31,.13)}
.tier-note-hero{font-size:12px;color:#9FB4C9;margin-top:8px}
.spec-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:8px 0;max-width:520px;width:100%}
.spec-row{display:flex;justify-content:space-between;gap:14px;padding:8px 16px;font-size:13.5px}
.spec-row:nth-child(odd){background:#F7F9FB}
.spec-row b{color:var(--muted);font-weight:600;flex:none;width:150px}
.spec-row span{text-align:right}
.variant-pick{display:flex;gap:10px;flex-wrap:wrap;align-items:flex-end}
.vfield label{display:block;font-size:11px;font-weight:700;color:var(--muted);letter-spacing:.05em;text-transform:uppercase;margin-bottom:5px}
.vfield select{padding:9px 12px;border:1px solid var(--line);border-radius:9px;background:#fff;min-width:150px;color:var(--text);font-weight:600;outline:none}
.vfield select:focus{border-color:var(--navy)}
.section{padding:30px 0}
.section>h2{font-size:20px;font-weight:800;margin-bottom:16px}
.section>h2 .gold-bar{display:inline-block;width:26px;height:5px;border-radius:3px;background:var(--gold);margin-right:10px;vertical-align:middle}
.two-col{display:grid;grid-template-columns:1fr 380px;gap:26px;align-items:start}
.faq{display:flex;flex-direction:column;gap:9px}
.faq details{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:0 16px}
.faq summary{padding:14px 0;font-weight:700;font-size:14.5px;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:19px;color:var(--orange);font-weight:800}
.faq details[open] summary::after{content:"–"}
.faq .fa-body{padding:0 0 14px;color:var(--muted);font-size:13.5px}
.oem-steps{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.oem-step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.oem-step .num{width:30px;height:30px;border-radius:50%;background:var(--gold-soft);color:#8A6D14;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:14px;margin-bottom:10px;border:1px solid #E4D193}
.oem-step h4{font-size:14.5px;margin-bottom:5px}
.oem-step p{font-size:12.5px;color:var(--muted)}
.cert-strip{display:flex;gap:10px;flex-wrap:wrap}
.cert-big{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 18px;display:flex;align-items:center;gap:10px;font-weight:800;font-size:13.5px}
.cert-big svg{width:18px;height:18px;color:var(--gold)}

/* ── Inquiry page ── */
.inq-grid{display:grid;grid-template-columns:1fr 360px;gap:24px;align-items:start;padding-bottom:90px}
.inq-table{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.inq-table table{width:100%;border-collapse:collapse;font-size:13.5px}
.inq-table th{background:var(--navy);color:#fff;text-align:left;padding:11px 14px;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;font-weight:700}
.inq-table td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:middle}
.inq-table .m{font-weight:800}
.inq-table .s{color:var(--muted);font-size:12px}
.qty{display:inline-flex;align-items:center;gap:3px;background:var(--orange-soft);border-radius:999px;padding:3px}
.qty button{width:24px;height:24px;border-radius:50%;border:0;background:var(--orange);color:#fff;display:flex;align-items:center;justify-content:center}
.qty button svg{width:12px;height:12px}
.qty b{min-width:46px;text-align:center;font-size:13px;color:var(--heat-text)}
.qty input{width:52px;border:1px solid var(--line);border-radius:8px;padding:5px 6px;text-align:center;font-weight:700;color:var(--text)}
.del-btn{background:none;border:0;color:var(--muted);padding:5px}
.del-btn:hover{color:#C0392B}
.del-btn svg{width:16px;height:16px}
.inq-empty{padding:38px;text-align:center;color:var(--muted)}
.form-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.form-card h3{font-size:16px;font-weight:800;margin-bottom:14px}
.frow{margin-bottom:12px}
.frow label{display:block;font-size:11.5px;font-weight:700;color:var(--muted);letter-spacing:.05em;text-transform:uppercase;margin-bottom:5px}
.frow input,.frow textarea,.frow select{width:100%;padding:10px 12px;border:1px solid var(--line);border-radius:9px;outline:0;color:var(--text);background:#fff}
.frow input:focus,.frow textarea:focus{border-color:var(--navy)}
.frow textarea{min-height:88px;resize:vertical}
.btn-primary{width:100%;border:0;border-radius:10px;padding:13px;background:var(--orange);color:#fff;font-weight:800;font-size:14.5px}
.btn-primary:hover{background:#DE640F}
.btn-primary:disabled{background:#C3CCD5;cursor:not-allowed}
.form-note{font-size:11.5px;color:var(--muted);margin-top:9px;text-align:center}
.success-panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:44px 30px;text-align:center}
.success-panel .ok-ic{width:58px;height:58px;border-radius:50%;background:#E6F4EC;color:var(--ok);display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.success-panel .ok-ic svg{width:28px;height:28px}
.success-panel h2{font-size:21px;margin-bottom:8px}
.success-panel p{color:var(--muted);font-size:14px}
.wa-btn{display:inline-flex;align-items:center;gap:8px;margin-top:16px;border:1.5px solid var(--navy);color:var(--navy);border-radius:10px;padding:10px 18px;font-weight:700;font-size:13.5px}
.totals{background:var(--navy);color:#fff;border-radius:var(--radius);padding:16px 18px;display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.totals strong{font-size:15px}
.totals small{display:block;color:#9FB4C9;font-size:11.5px;font-weight:600}

/* ── Footer ── */
.foot{background:var(--navy-deep);color:#8AA3BC;padding:26px 0;margin-top:20px;font-size:12.5px}
.foot-in{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.foot b{color:#DCE7F1}

/* ── Responsive ── */
@media (max-width:900px){
  .nav{display:none}
  .search-box input{width:90px}
  .cat-wrap{flex-direction:column}
  .rail{width:100%;position:static}
  .rail-cats{display:flex;overflow-x:auto;gap:4px}
  .rc{flex:none;width:auto}
  .rc small{display:none}
  .hero-grid{flex-direction:column}
  .hero-media{width:100%}
  .two-col,.inq-grid{grid-template-columns:1fr}
  .oem-steps{grid-template-columns:1fr}
  .prow{flex-direction:row}
  .thumb{width:104px;height:104px}
}
@media (max-width:560px){
  .thumb{width:88px;height:88px}
  .thumb svg{width:70px;height:70px}
  .price-row{flex-direction:column;align-items:flex-start}
}

/* ============================================================
   v2 桌面高密度网格（>1024px 优先）
   ============================================================ */
.trustbar{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 18px;display:flex;align-items:center;gap:22px;flex-wrap:wrap;margin:14px 0 16px}
.trustbar .tb-item{display:flex;align-items:center;gap:9px;font-size:13px;font-weight:700;color:var(--navy)}
.trustbar .tb-item svg{width:17px;height:17px;color:var(--gold)}
.trustbar .tb-item small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.trustbar .tb-sep{width:1px;height:26px;background:var(--line)}

.pgrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.pcard{background:var(--card);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;overflow:hidden;transition:box-shadow .15s,border-color .15s;position:relative}
.pcard:hover{box-shadow:0 6px 16px rgba(20,44,71,.1)}
.pcard.is-checked{border-color:var(--orange);box-shadow:0 0 0 1.5px var(--orange)}
.pcard-media{height:158px;background:#fff;display:flex;align-items:center;justify-content:center;position:relative;border-bottom:1px solid var(--line)}
.pcard-media svg{width:88px;height:88px}
.pcard-media .corner-tag{top:8px;left:8px}
.pcard-body{padding:10px 12px 12px;display:flex;flex-direction:column;gap:6px;flex:1}
.pcard-body h3{font-size:15.5px;font-weight:800}
.pcard-body h3 .series-no{color:var(--orange)}
.pcard-name{font-size:11.5px;color:var(--muted);line-height:1.4;min-height:31px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pcard-params{display:flex;gap:5px;flex-wrap:wrap}
.pcard-params .pp{font-size:11px;font-weight:700;background:var(--bg);border:1px solid var(--line);color:var(--chip-text);border-radius:5px;padding:1.5px 7px}
.pcard-tier{font-size:11.5px;color:var(--muted);font-weight:600;border-top:1px dashed var(--line);padding-top:7px;display:flex;flex-direction:column;gap:2px}
.pcard-tier .tp-row{display:flex;justify-content:space-between;gap:6px}
.pcard-tier .tp-row em{font-style:normal;font-weight:800;color:var(--text)}
.pcard-tier .tp-row.is-rec em{color:var(--orange)}
.pcard-foot{margin-top:auto;display:flex;align-items:center;gap:8px;padding-top:9px;border-top:1px solid var(--line)}
.pcard-check{display:flex;align-items:center;gap:6px;font-size:11px;font-weight:700;color:var(--muted);cursor:pointer;user-select:none}
.pcard-check input{width:16px;height:16px;accent-color:var(--orange);cursor:pointer}
.pcard-moq{font-size:10.5px;color:var(--muted)}
.pcard-btns{margin-left:auto;display:flex;gap:6px}
.pcard-btns .opt-pill{padding:8px 11px;font-size:11.5px}
.pcard-btns .add-btn{width:32px;height:32px}
.pcard-btns .add-btn svg{width:15px;height:15px}

/* 批量工具栏（右下悬浮胶囊） */
.bulkbar{position:fixed;right:26px;bottom:24px;z-index:70;background:var(--navy);color:#fff;border-radius:14px;box-shadow:0 10px 30px rgba(16,30,48,.35);padding:12px 16px;display:flex;align-items:center;gap:14px;transform:translateY(120%);opacity:0;transition:all .2s}
.bulkbar.is-show{transform:none;opacity:1}
.bulkbar .bk-txt strong{font-size:14.5px;font-weight:800;display:block}
.bulkbar .bk-txt small{font-size:11px;color:#9FB4C9;font-weight:600}
.bulkbar .bk-btn{border:0;border-radius:10px;padding:10px 16px;font-weight:800;font-size:13px;background:var(--orange);color:#fff;white-space:nowrap}
.bulkbar .bk-btn:hover{background:#DE640F}
.bulkbar .bk-clear{background:none;border:0;color:#9FB4C9;font-size:12px;font-weight:600;padding:6px}
.bulkbar .bk-clear:hover{color:#fff}

/* ============================================================
   v3 去价格化（B2B 询盘收集器模式）
   ============================================================ */
.pcard-caps{display:flex;gap:5px;flex-wrap:wrap}
.pcard-caps .cap{font-size:10.5px;font-weight:700;background:var(--gold-soft);border:1px solid #E4D193;color:#8A6D14;border-radius:5px;padding:1.5px 7px}
.pcard-caps .cap.plain{background:var(--bg);border-color:var(--line);color:var(--muted)}
.pcard-btns .btn-add{border:0;border-radius:9px;padding:8px 13px;background:var(--orange);color:#fff;font-weight:800;font-size:11.5px;white-space:nowrap}
.pcard-btns .btn-add:hover{background:#DE640F}
.quote-flow{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.14);border-radius:13px;padding:16px 18px;max-width:520px;width:100%}
.quote-flow h3{font-size:14px;font-weight:800;color:#fff;margin-bottom:10px}
.quote-flow .qf-step{display:flex;gap:10px;align-items:flex-start;padding:6px 0;font-size:13px;color:#C9D8E6}
.quote-flow .qf-step .qn{flex:none;width:22px;height:22px;border-radius:50%;background:var(--orange);color:#fff;font-weight:800;font-size:12px;display:flex;align-items:center;justify-content:center}
.quote-flow .qf-note{margin-top:9px;font-size:11.5px;color:#9FB4C9}
.bottombar .bk-inline{border:1.5px solid var(--orange);background:rgba(240,115,31,.14);color:#FFB37E;border-radius:10px;padding:10px 16px;font-weight:800;font-size:13px;white-space:nowrap}
.bottombar .bk-inline:hover{background:var(--orange);color:#fff}

/* ============================================================
   v4 DJI 色调（黑白灰科技感，参考 dji.com）
   ============================================================ */
:root{
  --navy:#14171C; --navy-deep:#0B0D10; --navy-soft:#23282E;
  --orange:#14171C; --orange-soft:#EEF0F2;
  --gold:#6E7377; --gold-soft:#F0F1F3;
  --chip-bg:#F0F2F4; --chip-text:#3A4046;
  --heat-bg:#EEF0F2; --heat-text:#3A4046;
  --bg:#F5F6F7; --line:#E6E8EB; --text:#1A1F24; --muted:#6E7377;
}
body{font-weight:400;letter-spacing:.01em}
/* 顶栏纯黑 */
.topbar{background:#0B0D10;box-shadow:none;border-bottom:1px solid rgba(255,255,255,.08)}
.topbar-in .nav a{color:#A8AEB5}
.topbar-in .nav a:hover{background:rgba(255,255,255,.06);color:#fff}
.topbar-in .nav a.is-on{background:#fff;color:#0B0D10}
.search-box{background:rgba(255,255,255,.07)}
.bag-count{background:#fff;color:#0B0D10}
/* 角标黑底白字 */
.corner-tag{background:#0B0D10;color:#fff;letter-spacing:.08em}
.corner-tag.gold{background:#3A4046}
/* 按钮：黑底白字 */
.add-btn,.btn-add,.btn-primary{background:#14171C;box-shadow:none}
.add-btn:hover,.btn-add:hover,.btn-primary:hover{background:#2A2F36}
.opt-pill{background:#fff;color:#14171C;border:1.5px solid #14171C}
.opt-pill:hover{background:#14171C;color:#fff}
.submit{background:#3A4046}
.submit.is-ready{background:#14171C}
.submit.is-ready:hover{background:#2A2F36}
/* 选中态：黑框 */
.pcard.is-checked{border-color:#14171C;box-shadow:0 0 0 1.5px #14171C}
.pcard-check input{accent-color:#14171C}
/* 卡片图：白底铺满 */
.pcard-media{overflow:hidden;background:#FFFFFF;border-bottom:1px solid var(--line)}
.pcard-media img{width:100%;height:100%;object-fit:contain;padding:8px;transition:transform .25s}
.pcard:hover .pcard-media img{transform:scale(1.03)}
/* 系列号去彩色 */
.series-no{color:#14171C !important}
/* hero 全黑 + 大图 */
.hero{background:linear-gradient(150deg,#14171C,#0B0D10)}
.hero-shot{background:#fff;border:0}
.hero-shot img{width:100%;height:100%;object-fit:contain;padding:14px}
.hero-thumbs .hthumb{background:#fff;border:1.5px solid rgba(255,255,255,.2)}
.hero-thumbs .hthumb.is-on{border-color:#fff}
.hero-thumbs .hthumb img{width:100%;height:100%;object-fit:contain;padding:5px;border-radius:9px;background:#fff}
.kicker{color:#A8AEB5}
.hero-info h1 .series-no{color:#fff !important}
.tier-table,.quote-flow{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.12)}
.quote-flow .qn{background:#fff;color:#0B0D10}
.quote-flow .qf-note b{color:#fff}
/* 徽章灰 */
.chip.cert{background:#fff;color:#3A4046;border:1px solid var(--line)}
.chip.reg{background:#EEF0F2;color:#3A4046;border:1px solid var(--line)}
.chip.reg svg{color:#6E7377}
.cert-big{border-color:var(--line)}
.cert-big svg{color:#3A4046}
/* 能力标签 */
.pcard-caps .cap{background:#F0F1F3;border-color:#E6E8EB;color:#3A4046}
.pcard-caps .cap.plain{background:#fff;color:#6E7377}
/* 信任横幅黑白 */
.trustbar .tb-item{color:#14171C}
.trustbar .tb-item svg{color:#14171C}
.trustbar .tb-sep{background:var(--line)}
/* 分类选中黑 */
.rc.is-active{background:#14171C;color:#fff}
.rc.is-active small{color:#A8AEB5}
.rc.is-active .rc-n{color:#fff}
.rc.is-active::before{background:#fff}
.fchip.is-on{background:#14171C;border-color:#14171C}
/* 底部 footer 更深 */
.foot{background:#0B0D10;color:#7A828A}
.foot b{color:#E6E8EB}
/* 数量步进 */
.qty{background:#EEF0F2}
.qty button{background:#14171C}
.qty b{color:#14171C}

/* 语言切换 pill */
.lang{border:1px solid rgba(255,255,255,.25);color:#C9D8E6;font-size:12px;font-weight:700;padding:5px 11px;border-radius:999px}
.lang:hover{border-color:#fff;color:#fff}

.hero .btn-add{background:#fff;color:#0B0D10}
.hero .btn-add:hover{background:#E6E8EB}
.hero .vfield select{background:#fff}

.pcard-certline{font-size:11px;color:var(--muted);font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.pcard-certline .sep{color:var(--line);margin:0 4px}

/* 认证 logo（img/certs/）：透明底裸放，与文字胶囊等高混排 */
.cert-logo{height:19px;width:auto;max-width:72px;object-fit:contain;display:inline-block;vertical-align:middle}
.pcard-certline .cert-logo{height:13px;transform:translateY(2px)}
.chips .cert-logo,.hero-chips .cert-logo{height:18px}
.cert-big .cert-logo{height:26px}