/* SmartCarSourcing – site styles (matches the approved mockup) */
@font-face{font-family:"Barlow Semi Condensed";font-weight:600;font-style:normal;font-display:swap;src:url(/fonts/barlow-semi-condensed-600.woff2) format("woff2")}
@font-face{font-family:"Barlow Semi Condensed";font-weight:700;font-style:normal;font-display:swap;src:url(/fonts/barlow-semi-condensed-700.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:100 700;font-style:normal;font-display:swap;src:url(/fonts/ibm-plex-sans-var.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:500;font-style:normal;font-display:swap;src:url(/fonts/ibm-plex-mono-500.woff2) format("woff2")}

:root{
  --ink:#101418;--ink-2:#4A535C;--line:#D9DCD6;--line-2:#B9BEB5;--bg:#F3F4F1;--paper:#FFFFFF;--soft:#FAFAF8;--tint:#EDEFEA;
  --dark:#0F1418;--dark-2:#0B0F12;--dark-line:#222B33;--dark-ink:#C3CBD2;--dark-mute:#A9B3BC;--dark-border:#2E3943;
  --amber:#F5A524;--amber-ink:#9A5B00;--amber-soft:#FFF8EC;--wa:#25D366;
  --sans:"IBM Plex Sans","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --display:"Barlow Semi Condensed","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --wrap:1200px;--r:12px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:var(--amber-ink)}a:hover{color:#6E4100}
h1,h2,h3{font-family:var(--display);font-weight:700;line-height:1.08;margin:0}
:lang(zh) h1,:lang(zh) h2,:lang(zh) h3{line-height:1.25;letter-spacing:0}
p{margin:0}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:24px;padding-right:24px}
.eyebrow{font-family:var(--mono);font-size:13px;letter-spacing:1.5px;text-transform:uppercase;color:var(--amber-ink)}
.on-dark .eyebrow,.eyebrow.light{color:var(--amber)}
.mute{color:var(--ink-2)}
.skip{position:absolute;left:-9999px;top:0;background:var(--amber);color:var(--ink);padding:8px 12px;z-index:100}
.skip:focus{left:8px;top:8px}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:12px 24px;border-radius:6px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;border:1px solid transparent;line-height:1.2}
.btn-amber{background:var(--amber);color:var(--ink)}.btn-amber:hover{background:#E6961A;color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff}.btn-dark:hover{background:#2B3238;color:#fff}
.btn-line{border-color:var(--ink);color:var(--ink);background:transparent;font-weight:500}.btn-line:hover{background:var(--ink);color:#fff}
.btn-ghost{border-color:#4A5560;color:#fff;font-weight:500}.btn-ghost:hover{border-color:#fff;color:#fff}
.btn-sm{min-height:44px;padding:10px 18px}
.row{display:flex;flex-wrap:wrap;gap:12px}

/* top bar + header */
.topbar{background:var(--dark-2);color:var(--dark-mute);font-size:13px}
.topbar .wrap{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px 24px;padding-top:8px;padding-bottom:8px}
.topbar a{color:var(--dark-mute);text-decoration:none}.topbar a:hover{color:#fff}
.topbar .contacts{display:flex;flex-wrap:wrap;gap:4px 20px}
.topbar .wa{color:var(--amber)}
.header{background:var(--dark);border-bottom:1px solid var(--dark-line);position:sticky;top:0;z-index:40}
.header .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px}
.logo{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none;font-family:"Barlow Semi Condensed",sans-serif;font-weight:700;font-size:24px;letter-spacing:.2px}
.logo:hover{color:#fff}.logo .accent{color:var(--amber)}
.nav{display:flex;align-items:center;gap:4px 26px;font-size:15px}
.nav a{color:#E6EAED;text-decoration:none}.nav a:hover,.nav a[aria-current=page]{color:#fff}
.nav a[aria-current=page]{font-weight:600}
.lang{border:1px solid #3A4651;border-radius:4px;padding:4px 10px;font-size:14px}
.menu-btn{display:none;background:none;border:1px solid #3A4651;color:#fff;border-radius:6px;min-width:44px;min-height:44px;align-items:center;justify-content:center;cursor:pointer}
@media (max-width:960px){
  .menu-btn{display:inline-flex}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:var(--dark);border-bottom:1px solid var(--dark-line);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 20px}
  .nav.open{display:flex}
  .nav a{padding:12px 0;border-bottom:1px solid var(--dark-line)}
  .nav .lang{align-self:flex-start;margin-top:12px;border-bottom:1px solid #3A4651;padding:8px 14px}
  .topbar{display:none}
  .nav .btn{margin-top:12px}
}

/* hero */
.hero{background:var(--dark);color:#fff}
.hero .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,440px),1fr));gap:56px;align-items:center;padding-top:72px;padding-bottom:88px}
.hero h1{font-size:clamp(40px,5.2vw,60px);margin:16px 0 20px;letter-spacing:-.5px}
:lang(zh) .hero h1{font-size:clamp(34px,4.2vw,50px)}
.hero .lead{font-size:18px;color:var(--dark-ink);margin-bottom:32px;max-width:540px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:32px;font-family:var(--mono);font-size:12.5px;color:var(--dark-ink)}
.tags span{border:1px solid var(--dark-border);border-radius:4px;padding:5px 10px}
.screen-wrap{position:relative;padding:8px 0 40px}
.screen{background:#05080A;border:10px solid #1C242B;border-radius:22px;aspect-ratio:16/9;padding:18px;display:grid;grid-template-columns:1.35fr 1fr;gap:14px}
.screen .map{background:#13202A;border-radius:10px;position:relative;overflow:hidden}
.screen .map svg{width:100%;height:100%}
.screen .chip{position:absolute;left:12px;top:12px;background:var(--dark-2);border-radius:6px;padding:6px 10px;font-size:12px}
.screen .apps{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.screen .app{background:#1E2A33;border-radius:10px;display:flex;flex-direction:column;justify-content:flex-end;padding:10px;color:#E6EAED;font-size:12px}
.device{position:absolute;right:-8px;bottom:0;width:180px;background:#fff;border-radius:20px;box-shadow:0 18px 40px rgba(0,0,0,.45);padding:10px}
.device small{display:block;text-align:center;font-family:var(--mono);font-size:11px;color:var(--ink-2)}
@media (max-width:560px){.device{width:120px;right:0}.screen{padding:10px;gap:8px}.screen .app{font-size:11px;padding:6px}}

/* page head (inner pages) */
.page-head{background:var(--dark);color:#fff}
.page-head .wrap{padding-top:56px;padding-bottom:56px}
.page-head h1{font-size:clamp(36px,4.5vw,52px);margin:12px 0 16px}
.page-head p{color:var(--dark-ink);font-size:18px;max-width:760px}
.crumbs{font-size:14px;color:var(--ink-2);padding-top:20px}
.crumbs a{color:var(--ink-2);text-decoration:none}.crumbs a:hover{color:var(--ink)}
.page-head .crumbs{color:var(--dark-mute);padding-top:0;margin-bottom:8px}.page-head .crumbs a{color:var(--dark-mute)}

/* sections */
.sec{padding:88px 0}.sec-tight{padding:64px 0}
.sec-white{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sec h2,.h2{font-size:clamp(32px,3.6vw,44px);margin:12px 0 16px}
.sec-head{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-end;gap:16px 48px;margin-bottom:36px}
.sec-head h2{margin-bottom:0}
.sec-head p{max-width:460px;color:var(--ink-2)}
.split{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,420px),1fr));gap:56px;align-items:center}
.split-top{align-items:start}

/* stats */
.stats{background:var(--paper);border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:24px;padding-top:28px;padding-bottom:28px}
.stat b{display:block;font-family:var(--display);font-weight:700;font-size:40px;line-height:1}
.stat span{display:block;color:var(--ink-2);font-size:14px;margin-top:6px}

/* featured */
.photo-box{background:var(--paper);border:1px solid var(--line);border-radius:16px;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden}
.badge{position:absolute;left:20px;top:20px;background:var(--ink);color:#fff;font-size:12px;font-weight:600;padding:5px 10px;border-radius:4px;letter-spacing:.5px}
.kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));border-top:1px solid var(--line);margin:0 0 28px}
.kv div{padding:12px 0;border-bottom:1px solid var(--line)}
.kv small{display:block;font-size:13px;color:var(--ink-2)}.kv strong{font-weight:600}

/* product cards */
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px}
.cat-card{text-decoration:none;color:var(--ink);border:1px solid var(--line);border-radius:var(--r);padding:24px;display:flex;flex-direction:column;gap:14px;background:var(--soft)}
.cat-card:hover{color:var(--ink);border-color:var(--ink)}
.cat-card.hot{border:2px solid var(--amber);padding:23px;background:var(--amber-soft)}
.cat-card .img{height:160px;background:var(--paper);border-radius:8px;display:flex;align-items:center;justify-content:center;overflow:hidden}
.cat-card .img img{height:100%;width:auto}
.cat-card .meta{font-family:var(--mono);font-size:12px;color:var(--ink-2);text-transform:uppercase}
.cat-card h3{font-size:26px;line-height:1.1}
.cat-card p{color:var(--ink-2);font-size:15px}
.cat-card .more{font-weight:600;color:var(--amber-ink);margin-top:auto}
.p-card{text-decoration:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;flex-direction:column;gap:6px}
.p-card:hover{color:var(--ink);border-color:var(--ink)}
.p-card img{width:100%;aspect-ratio:1/1;object-fit:contain;margin-bottom:8px}
.p-card .model{font-family:var(--mono);font-size:12px;color:var(--amber-ink)}
.p-card strong{font-size:17px;line-height:1.3}
.p-card span{font-size:14px;color:var(--ink-2)}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.filters a{border:1px solid var(--line-2);border-radius:999px;padding:8px 16px;text-decoration:none;color:var(--ink);font-size:15px;min-height:40px;display:inline-flex;align-items:center}
.filters a[aria-current=page]{background:var(--ink);color:#fff;border-color:var(--ink)}
.cat-block{margin-bottom:64px}
.cat-block h2{font-size:32px;margin-bottom:8px}
.cat-block>p{color:var(--ink-2);margin-bottom:24px;max-width:760px}

/* bundle band */
.band{background:var(--dark);color:#fff;border-radius:20px;padding:56px;display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,380px),1fr));gap:48px;align-items:center}
.band p{color:var(--dark-ink);font-size:17px;margin-bottom:28px}
@media (max-width:560px){.band{padding:28px}}
.gauges{background:#05080A;border:8px solid #1C242B;border-radius:16px;padding:20px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.gauge{background:#13202A;border-radius:10px;padding:16px 8px;text-align:center}
.gauge b{display:block;font-family:var(--mono);font-size:20px;font-weight:500;margin-top:4px}
.gauge small{font-size:12px;color:var(--dark-mute)}
.gauges .codes{grid-column:1/-1;background:#13202A;border-radius:10px;padding:12px 14px;display:flex;justify-content:space-between;font-size:13px;color:var(--dark-ink)}
.gauges .codes b{color:#9BD48C;font-family:var(--mono);font-weight:500}

/* factory */
.factory{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
@media (max-width:900px){.factory{grid-template-columns:repeat(2,minmax(0,1fr))}}
.factory figure{margin:0;min-width:0}
.factory .wide{grid-column:span 2}
@media (max-width:580px){.factory{grid-template-columns:1fr}.factory .wide{grid-column:auto}}
.factory img{width:100%;height:300px;object-fit:cover;border-radius:var(--r)}
.factory figcaption{font-size:14px;color:var(--ink-2);margin-top:10px}.factory figcaption b{color:var(--ink);font-weight:600}
.tour{background:var(--dark);color:#fff;border-radius:var(--r);padding:24px;display:flex;flex-direction:column;justify-content:space-between;gap:16px;min-height:300px}
.tour p{font-family:var(--display);font-weight:700;font-size:28px;line-height:1.15}

/* OEM steps */
.chips{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--mono);font-size:12.5px}
.chips span{border:1px solid var(--line-2);border-radius:4px;padding:5px 10px}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.steps li{border:1px solid var(--line);border-radius:var(--r);padding:20px;background:var(--paper)}
.steps .n{font-family:var(--display);font-weight:700;font-size:32px;color:var(--amber-ink);line-height:1}
.steps b{display:block;margin:10px 0 4px}
.steps span{color:var(--ink-2);font-size:15px}

/* buyers */
.buyers{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:32px}
.buyers div{border-top:3px solid var(--ink);padding-top:18px}
.buyers b{display:block;font-size:19px;margin-bottom:6px}.buyers p{color:var(--ink-2)}

/* FAQ */
.faq-item{border-top:1px solid var(--line);padding:18px 0}
.faq-item h3{font-family:var(--sans);font-weight:600;font-size:17px;line-height:1.4}
.faq-item p{color:var(--ink-2);margin-top:6px}
.faq-more[hidden]{display:none}
.faq-toggle{margin-top:0;border-top:1px solid var(--line);padding-top:16px}
.faq-toggle svg{transition:transform .2s}
.faq-toggle [aria-expanded=true] svg{transform:rotate(180deg)}

/* form */
.form{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:32px;display:flex;flex-direction:column;gap:16px}
.sec-white .form{background:var(--bg)}
.form .title{font-family:var(--display);font-weight:700;font-size:30px;line-height:1.1}
.form .fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:500}
.form input,.form select,.form textarea{height:46px;border:1px solid var(--line-2);border-radius:6px;padding:0 12px;font:inherit;font-weight:400;background:var(--paper);color:var(--ink);width:100%}
.form textarea{height:auto;padding:10px 12px;resize:vertical;min-height:110px}
.form .check{flex-direction:row;align-items:center;gap:10px;font-size:15px;min-height:44px;font-weight:400}
.form .check input{width:20px;height:20px}
.form .req{color:#B3261E}
.form .hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.form .note{font-size:13px;color:var(--ink-2)}
.form .status{display:none;border-radius:6px;padding:12px 14px;font-size:15px}
.form .status.ok{display:block;background:#E7F5EA;color:#1D5B2C}
.form .status.err{display:block;background:#FCE8E6;color:#8C1D18}
@media (max-width:560px){.form{padding:20px}}

/* product page */
.p-hero{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(100%,460px),1fr));gap:56px;padding-top:24px;padding-bottom:72px}
.gallery .main{aspect-ratio:1/1}
.gallery .main img{width:88%;height:88%;object-fit:contain}
.thumbs{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;margin-top:12px}
.thumbs button{aspect-ratio:1/1;padding:0;background:var(--paper);border:1px solid var(--line);border-radius:8px;cursor:pointer;overflow:hidden}
.thumbs button[aria-current=true]{border:2px solid var(--ink)}
.thumbs img{width:100%;height:100%;object-fit:cover}
.p-hero h1{font-size:clamp(32px,3.6vw,46px);margin:12px 0 16px;line-height:1.08}
.p-hero .summary{color:var(--ink-2);font-size:17px;margin-bottom:24px}
.ticks{list-style:none;margin:0 0 28px;padding:0;display:flex;flex-direction:column;gap:10px}
.ticks li{display:flex;gap:10px;align-items:flex-start}
.ticks svg{flex:none;margin-top:4px}
.facts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));border:1px solid var(--line);border-radius:var(--r);background:var(--paper);margin-bottom:24px}
.facts div{padding:16px;border-right:1px solid var(--line)}.facts div:last-child{border-right:0}
.facts small{display:block;font-size:13px;color:var(--ink-2)}.facts b{font-size:18px}
@media (max-width:480px){.facts{grid-template-columns:1fr}.facts div{border-right:0;border-bottom:1px solid var(--line)}}
.specs{width:100%;border-collapse:collapse;font-size:15px}
.specs th{text-align:left;font-weight:500;color:var(--ink-2);padding:11px 16px 11px 0;width:34%;vertical-align:top}
.specs td{padding:11px 0}
.specs tr{border-top:1px solid var(--line)}.specs tr:last-child{border-bottom:1px solid var(--line)}
.table-box{overflow-x:auto}
.protocols{list-style:none;margin:0;padding:0;font-family:var(--mono);font-size:14px}
.protocols li{border-top:1px solid var(--line);padding:9px 0}.protocols li:last-child{border-bottom:1px solid var(--line)}
.pair{text-decoration:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:16px;display:flex;gap:16px;align-items:center}
.pair:hover{color:var(--ink);border-color:var(--ink)}
.pair img{width:88px;height:88px;object-fit:contain;flex:none}
.pair b{display:block}.pair span{font-size:14px;color:var(--ink-2)}.pair em{display:block;font-style:normal;font-weight:600;font-size:14px;color:var(--amber-ink);margin-top:4px}
.custom{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px}
.custom div{border:1px solid var(--dark-border);border-radius:10px;padding:16px}
.custom small{display:block;color:var(--dark-mute);font-size:14px}
.on-dark{background:var(--dark);color:#fff}
.on-dark .form{background:#182027;border-color:var(--dark-border);color:#fff}
.on-dark .form label{color:var(--dark-ink)}
.on-dark .form input,.on-dark .form select,.on-dark .form textarea{background:var(--dark);color:#fff;border-color:#3A4651}
.on-dark .form .note{color:var(--dark-mute)}

/* generic content */
.prose{max-width:760px}
.prose h2{font-size:30px;margin:40px 0 12px}
.prose p,.prose ul,.prose ol{margin:0 0 16px;font-size:17px}
.prose ul,.prose ol{padding-left:22px}.prose li{margin-bottom:6px}
.cards-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.box{background:var(--paper);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.box b{display:block;font-size:18px;margin-bottom:6px}.box p{color:var(--ink-2)}
.data{width:100%;border-collapse:collapse;background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;font-size:15px}
.data th{text-align:left;background:var(--tint);font-weight:600;padding:12px 14px}
.data td{padding:12px 14px;border-top:1px solid var(--line);vertical-align:top}
.data a{font-weight:600}
.post-card{text-decoration:none;color:var(--ink);background:var(--paper);border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.post-card:hover{color:var(--ink);border-color:var(--ink)}
.post-card img{width:100%;aspect-ratio:16/10;object-fit:cover}
.post-card div{padding:20px;display:flex;flex-direction:column;gap:8px;flex:1}
.post-card h2{font-size:24px;line-height:1.2;margin:0}
.post-card p{color:var(--ink-2);font-size:15px}
.post-card em{font-style:normal;font-weight:600;color:var(--amber-ink);margin-top:auto}
.contact-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:14px;font-size:17px}
.contact-list small{display:block;font-size:13px;color:var(--ink-2)}
.contact-list a{color:var(--ink);font-weight:600;text-decoration:none}

/* footer */
.footer{background:var(--dark-2);color:var(--dark-mute);font-size:14px}
.footer .cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:32px;padding-top:56px;padding-bottom:32px}
.footer h2{font-family:var(--sans);font-size:14px;font-weight:600;color:#fff;margin:0 0 4px}
.footer .col{display:flex;flex-direction:column;gap:8px}
.footer a{color:var(--dark-mute);text-decoration:none}.footer a:hover{color:#fff}
.footer .wa{color:var(--amber)}
.footer .legal{border-top:1px solid var(--dark-line);padding-top:20px;padding-bottom:32px;font-size:12.5px;color:#8A949D}
.footer .brand{font-family:"Barlow Semi Condensed",sans-serif;font-weight:700;font-size:22px;color:#fff}.footer .brand span{color:var(--amber)}

/* WhatsApp floating button (phones only) */
.wa-fab{display:none;position:fixed;right:16px;bottom:20px;width:58px;height:58px;border-radius:50%;background:var(--wa);box-shadow:0 8px 24px rgba(0,0,0,.28);align-items:center;justify-content:center;z-index:50}
@media (max-width:768px){.wa-fab{display:flex}}