/* Cheong Hong Technology — shared site stylesheet */

:root{
  --ink:#0d1b1e; --ink2:#33474c; --mute:#6b848a;
  --line:#e2ecee; --bg:#ffffff; --soft:#f5f9fa;
  --brand:#0e7c66; --brand2:#0a5a4b; --accent:#f0a020;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Helvetica Neue",Arial,sans-serif;
     color:var(--ink);background:var(--bg);line-height:1.65;-webkit-font-smoothing:antialiased}
.wrap{max-width:1240px;margin:0 auto;padding:0 28px}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}

/* CJK typesetting */
html[lang="zh-CN"] body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Hiragino Sans GB","Segoe UI",sans-serif;
     line-height:1.8}
html[lang="zh-CN"] h1{letter-spacing:-.5px;max-width:24ch}
html[lang="zh-CN"] h2{letter-spacing:-.3px}
html[lang="zh-CN"] .kicker{letter-spacing:.6px}
html[lang="zh-CN"] .head p{max-width:50ch}
html[lang="zh-CN"] .lede{max-width:44ch}
html[lang="zh-CN"] .note{max-width:40ch}
html[lang="zh-CN"] .place p{line-height:1.75}
html[lang="zh-CN"] .sc p{max-width:34ch}

/* nav */
nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);
    backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px;position:relative}
.logo{display:flex;align-items:center;gap:11px;font-weight:700;font-size:16.5px;letter-spacing:-.2px;
     flex:none;white-space:nowrap}
.logo i{width:30px;height:30px;border-radius:8px;background:linear-gradient(135deg,var(--brand),#12a189);
        display:block;position:relative;flex:0 0 30px}
.logo i::after{content:"";position:absolute;inset:9px;border-radius:2px;background:#fff;opacity:.92}
.logo small{display:block;font-weight:500;font-size:11px;color:var(--mute);letter-spacing:.4px;white-space:nowrap}
nav ul{display:flex;gap:16px;list-style:none;font-size:14px;color:var(--ink2)}
nav ul a{white-space:nowrap}
nav ul a:hover{color:var(--brand)}
nav ul a.now{color:var(--brand);font-weight:600}
nav ul li.cta{display:none}
.btn{background:var(--brand);color:#fff;padding:10px 18px;border-radius:8px;white-space:nowrap;
     font-size:14px;font-weight:600;transition:.18s;display:inline-block}
.btn:hover{background:var(--brand2)}
.navright{display:flex;align-items:center;gap:14px;flex:none}
.langsw{display:flex;gap:2px;background:var(--soft);border:1px solid var(--line);
       border-radius:8px;padding:3px}
.langsw a{font-size:12.5px;font-weight:600;color:var(--mute);padding:5px 9px;
          border-radius:6px;line-height:1.3;white-space:nowrap}
.langsw a:hover{color:var(--brand)}
.langsw a.on{background:var(--brand);color:#fff}

/* mobile menu — no JavaScript, driven by a hidden checkbox */
.navchk{display:none}
.navburger{display:none;width:40px;height:36px;border:1px solid var(--line);border-radius:9px;
  align-items:center;justify-content:center;flex-direction:column;gap:4px;cursor:pointer;
  flex:none;background:#fff}
.navburger i{display:block;width:17px;height:2px;border-radius:2px;background:var(--ink2);transition:.18s}
@media(max-width:1180px){
  nav ul{display:none}
  .navburger{display:flex}
  .navright > .btn{display:none}          /* the CTA moves inside the menu below */
  nav ul li.cta{display:block}
  .navchk:checked ~ ul{display:flex;flex-direction:column;gap:0;position:absolute;top:100%;
    left:0;right:0;background:#fff;border-bottom:1px solid var(--line);
    padding:6px 28px 18px;box-shadow:0 20px 34px rgba(13,27,30,.10)}
  .navchk:checked ~ ul li a{display:block;padding:10px 0;font-size:15.5px;border-bottom:1px solid var(--soft)}
  .navchk:checked ~ ul li.cta{padding-top:14px}
  .navchk:checked ~ ul li.cta a{background:var(--brand);color:#fff;text-align:center;
    border-radius:8px;padding:11px 16px;border-bottom:0;font-weight:600}
  .navchk:checked ~ .navburger i:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .navchk:checked ~ .navburger i:nth-child(2){opacity:0}
  .navchk:checked ~ .navburger i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
}
@media(max-width:560px){
  .wrap{padding:0 18px}
  nav .wrap{height:58px;padding:0 18px;gap:8px}
  .logo{font-size:14px;gap:7px}
  .logo i{width:24px;height:24px;flex:0 0 24px}
  .logo i::after{inset:7px}
  .logo small{display:none}
  .navright{gap:8px}
  .langsw{padding:2px}
  .langsw a{padding:4px 6px;font-size:11px}
  .navburger{width:36px;height:33px}
  .navchk:checked ~ ul{padding:6px 18px 16px}
  .navchk:checked ~ ul li a{font-size:15px}
}

/* hero */
.hero{padding:88px 0 72px;background:
   radial-gradient(1100px 460px at 78% -8%, rgba(14,124,102,.10), transparent 60%),
   linear-gradient(180deg,#fbfdfd,#fff);border-bottom:1px solid var(--line)}
.tagline{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;
   color:var(--brand);background:rgba(14,124,102,.09);padding:6px 14px;border-radius:99px;
   letter-spacing:.3px;margin-bottom:22px}
.tagline .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);flex:none}
h1{font-size:clamp(32px,5vw,52px);line-height:1.12;letter-spacing:-1.4px;font-weight:800;max-width:16ch}
h1 em{font-style:normal;color:var(--brand)}
.lede{margin-top:20px;font-size:17.5px;color:var(--ink2);max-width:60ch}
.cta{margin-top:32px;display:flex;gap:12px;flex-wrap:wrap}
.btn.ghost{background:transparent;color:var(--ink);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--brand);color:var(--brand)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);
   border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:56px}
.stats div{background:#fff;padding:22px 20px}
.stats b{display:block;font-size:26px;font-weight:800;letter-spacing:-.6px;color:var(--brand)}
.stats span{font-size:12.5px;color:var(--mute);display:block;margin-top:4px}
@media(max-width:700px){.stats{grid-template-columns:repeat(2,1fr)}}

/* breadcrumb + page head */
.crumbs{font-size:12.5px;color:var(--mute);margin-bottom:18px;line-height:1.5}
.crumbs a{color:var(--mute)}
.crumbs a:hover{color:var(--brand);text-decoration:underline}
.crumbs .sep{color:#bccdd0;margin:0 7px}
.crumbs b{color:var(--ink2);font-weight:600}
.pagehead{padding:44px 0 0}
.pagehead h1{font-size:clamp(28px,3.6vw,40px);max-width:22ch}
.pagehead .lede{font-size:16.5px;max-width:66ch}

/* section */
section{padding:76px 0}
section.tight{padding:52px 0}
.head{margin-bottom:40px}
.kicker{font-size:12.5px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;color:var(--brand)}
h2{font-size:clamp(24px,3.2vw,34px);letter-spacing:-.7px;font-weight:800;margin-top:9px}
h3{font-size:19px;font-weight:700;letter-spacing:-.3px}
.head p{color:var(--mute);margin-top:11px;max-width:64ch;font-size:15.5px}

/* products */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.grid{grid-template-columns:1fr}}
.card{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff;
      transition:.2s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(13,27,30,.09);border-color:#cfe1e0}
.thumb{height:216px;background:linear-gradient(180deg,#f8fcfc,#eef4f4);
       display:flex;align-items:center;justify-content:center;position:relative;
       overflow:hidden;border-bottom:1px solid var(--line)}
.thumb img{width:100%;height:100%;object-fit:contain;padding:12px}
.thumb img.fill{object-fit:cover;padding:0}
.flag{position:absolute;top:12px;left:12px;z-index:2;font-size:11px;font-weight:700;padding:4px 10px;
       border-radius:6px;background:var(--brand);color:#fff;letter-spacing:.3px}
.body{padding:20px;flex:1;display:flex;flex-direction:column}
.body h3{font-size:17px;font-weight:700;letter-spacing:-.2px}
.body .sub{font-size:13px;color:var(--mute);margin-top:3px}
.spec{margin-top:15px;border-top:1px solid var(--line);padding-top:14px;flex:1}
.spec dl{display:grid;grid-template-columns:auto 1fr;gap:6px 14px;font-size:13.2px}
.spec dt{color:var(--mute)}
.spec dd{text-align:right;font-weight:600;font-variant-numeric:tabular-nums}
.certs{margin-top:15px;display:flex;flex-wrap:wrap;gap:6px}
.certs span{font-size:11px;font-weight:600;padding:3px 9px;border-radius:5px;
            background:var(--soft);color:var(--ink2);border:1px solid var(--line)}
.ask{margin-top:17px;font-size:14px;font-weight:600;color:var(--brand);display:flex;
     align-items:center;gap:6px}
.ask::after{content:"→";transition:.18s}
.card:hover .ask::after{transform:translateX(4px)}
.imgnote{margin-top:22px;font-size:12.6px;color:var(--mute);max-width:78ch}

/* application scenes (image figures) */
.scenes{display:grid;grid-template-columns:1fr 1fr;gap:22px}
@media(max-width:760px){.scenes{grid-template-columns:1fr}}
.scenes figure{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.scenes img{width:100%;height:262px;object-fit:cover}
.scenes figcaption{padding:15px 18px;font-size:13.4px;color:var(--ink2);
                   border-top:1px solid var(--line);display:flex;gap:10px;align-items:flex-start}
.scenes figcaption b{color:var(--brand);font-weight:700}

/* scene catalogue (compact cards) */
/* product-line split: charging vs storage */
.linenav{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-bottom:20px}
.linenav a{display:flex;flex-direction:column;gap:6px;border:1px solid var(--line);border-radius:12px;
           padding:16px 18px;background:#fff;position:relative}
.linenav a:hover{border-color:var(--brand);background:#fbfefe}
.linenav .tag{font-size:11px;font-weight:800;letter-spacing:.8px;color:var(--brand);text-transform:uppercase}
.linenav b{font-size:16px;font-weight:700}
.linenav i{position:absolute;right:16px;top:16px;font-style:normal;font-size:13px;
           font-weight:700;color:var(--mute)}
@media(max-width:620px){.linenav{grid-template-columns:1fr}}

.scline{padding:26px 0 8px;scroll-margin-top:80px}
.scline+.scline{margin-top:24px;border-top:1px solid var(--line);padding-top:34px}
.linehead{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.linetag{font-size:11px;font-weight:800;letter-spacing:.8px;color:#fff;background:var(--brand);
         border-radius:6px;padding:4px 9px;text-transform:uppercase}
.linehead h2{font-size:22px}
.linecount{font-size:13px;font-weight:600;color:var(--mute)}
.linenote{font-size:13.5px;color:var(--mute);line-height:1.65;margin:10px 0 4px;max-width:78ch}

.scnav{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:30px}
.scnav a{font-size:13px;font-weight:600;color:var(--ink2);background:var(--soft);
         border:1px solid var(--line);border-radius:99px;padding:7px 15px}
.scnav a:hover{background:var(--brand);color:#fff;border-color:var(--brand)}
.scband{padding:34px 0 0;scroll-margin-top:80px}
.scband h3{font-size:18px;display:flex;align-items:center;gap:11px}
.scband h3 .n{width:26px;height:26px;flex:0 0 26px;border-radius:7px;background:var(--brand);
              color:#fff;font-size:12.5px;font-weight:800;display:flex;align-items:center;
              justify-content:center}
.scgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:18px}
@media(max-width:900px){.scgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.scgrid{grid-template-columns:1fr}}
.sc{border:1px solid var(--line);border-radius:12px;background:#fff;overflow:hidden;
     display:flex;flex-direction:column}
.sc:hover{border-color:#cfe1e0;background:#fcfefe}
.sc:hover .scimg img{transform:scale(1.03)}
.scimg{aspect-ratio:760/457;background:linear-gradient(160deg,#eef4f4,#e0ebeb);overflow:hidden;
       border-bottom:1px solid var(--line)}
.scimg img{width:100%;height:100%;object-fit:cover;display:block;transition:transform .35s ease}
.scimg.empty{display:flex;align-items:center;justify-content:center;border-bottom:none}
.scimg.empty span{font-size:26px;font-weight:800;color:#c8dad9;letter-spacing:1px}
.scbody{padding:15px 17px 17px;display:flex;flex-direction:column;gap:6px;flex:1}
.sc .no{font-size:11px;font-weight:700;color:var(--brand);letter-spacing:.6px}
.sc b{font-size:14.6px;font-weight:700;line-height:1.35}
.sc p{font-size:13px;color:var(--mute);line-height:1.6}
.sccount{font-size:13px;color:var(--mute);margin-top:10px}

/* cert band */
.band{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.certrow{display:flex;flex-wrap:wrap;gap:36px;align-items:center;justify-content:space-between}
.certrow ul{list-style:none;display:flex;flex-wrap:wrap;gap:12px}
.certrow li{background:#fff;border:1px solid var(--line);border-radius:9px;padding:11px 18px;
            font-size:14px;font-weight:700;letter-spacing:.2px}
.note{font-size:13.5px;color:var(--mute);max-width:44ch}

/* about */
.two{display:grid;grid-template-columns:1.15fr .85fr;gap:52px;align-items:start}
@media(max-width:860px){.two{grid-template-columns:1fr;gap:34px}}
.list{list-style:none;margin-top:8px}
.list li{padding:15px 0;border-bottom:1px solid var(--line);display:flex;gap:14px;align-items:flex-start}
.list li:first-child{border-top:1px solid var(--line)}
.list b{display:block;font-size:15px;font-weight:700}
.list p{font-size:14px;color:var(--mute);margin-top:3px}
.tick{width:20px;height:20px;flex:0 0 20px;border-radius:50%;background:rgba(14,124,102,.13);
      color:var(--brand);display:flex;align-items:center;justify-content:center;
      font-size:12px;font-weight:800;margin-top:2px}
.panel{background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:26px}
.panel h4{font-size:15px;font-weight:700;margin-bottom:14px}
.panel dl{display:grid;grid-template-columns:1fr auto;gap:10px 16px;font-size:14px}
.panel dt{color:var(--mute)}
.panel dd{font-weight:700;text-align:right}

/* network / locations */
.places{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;align-items:stretch}
@media(max-width:980px){.places{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.places{grid-template-columns:1fr}}
.place{border:1px solid var(--line);border-radius:14px;padding:22px 20px;background:#fff;
       display:flex;flex-direction:column}
.place .role{font-size:11px;font-weight:700;letter-spacing:1px;text-transform:uppercase;
             color:var(--brand);margin-bottom:10px}
.place b{font-size:16.5px;font-weight:800;letter-spacing:-.2px;display:block;line-height:1.35}
.place p{font-size:13.4px;color:var(--ink2);margin-top:12px;flex:1}
.place.lead{background:linear-gradient(160deg,#f2fbf9,#fff);border-color:#cfe6e0}
html[lang="zh-CN"] .place .role{letter-spacing:.5px}

/* route table */
.routes{border:1px solid var(--line);border-radius:14px;overflow:hidden}
.routes .r{display:grid;grid-template-columns:1.1fr 1fr .8fr;gap:16px;padding:15px 22px;
           border-bottom:1px solid var(--line);font-size:14px;align-items:center}
.routes .r:last-child{border-bottom:0}
.routes .r.hd{background:var(--soft);font-size:12.5px;font-weight:700;letter-spacing:.5px;
              text-transform:uppercase;color:var(--mute)}
.routes .r span:last-child{font-weight:700;color:var(--brand)}
@media(max-width:700px){.routes .r{grid-template-columns:1fr;gap:4px}}

/* services */
.svcgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
@media(max-width:900px){.svcgrid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.svcgrid{grid-template-columns:1fr}}
.svc{border:1px solid var(--line);border-radius:14px;padding:24px 22px;background:#fff;
     display:flex;flex-direction:column}
.svc h4{font-size:16px;font-weight:700;margin-bottom:10px;letter-spacing:-.2px}
.svc p{font-size:13.6px;color:var(--mute);flex:1}
.svc ul{list-style:none;margin-top:14px;border-top:1px solid var(--line);padding-top:12px}
.svc li{font-size:13px;color:var(--ink2);padding:5px 0;display:flex;gap:9px;align-items:flex-start}
.svc li::before{content:"–";color:var(--brand);font-weight:700;flex:0 0 12px;text-align:center}
.svc.lead{background:linear-gradient(160deg,#f2fbf9,#fff);border-color:#cfe6e0}

/* steps */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;counter-reset:s}
@media(max-width:900px){.steps{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.steps{grid-template-columns:1fr}}
.steps div{border-top:3px solid var(--brand);padding-top:16px}
.steps b{display:block;font-size:15px;font-weight:700}
.steps p{font-size:13.4px;color:var(--mute);margin-top:6px}
.steps .k{font-size:11.5px;font-weight:800;letter-spacing:.8px;color:var(--brand);
          text-transform:uppercase;margin-bottom:5px;display:block}

/* partner recruitment */
.pcols{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;align-items:stretch}
@media(max-width:900px){.pcols{grid-template-columns:1fr}}
.pcol{border:1px solid var(--line);border-radius:14px;padding:24px 22px;background:#fff;
      display:flex;flex-direction:column}
.pcol h4{font-size:15px;font-weight:700;margin-bottom:12px;padding-bottom:12px;
         border-bottom:1px solid var(--line)}
.pcol ul{list-style:none;flex:1}
.pcol li{padding:9px 0;font-size:14px;color:var(--ink2);display:flex;gap:10px;align-items:flex-start}
.pcol li::before{content:"–";color:var(--brand);font-weight:700;flex:0 0 13px;text-align:center}
.pcol.warn{background:#fffaf3;border-color:#f0dfc2}
.pcol.warn h4{color:#a5651a;border-bottom-color:#f0dfc2}
.pcol.warn li::before{content:"!";color:#b8791b;flex:0 0 13px;text-align:center}
.pcta{margin-top:30px}

/* FAQ */
.faq{border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{padding:17px 22px;font-size:15px;font-weight:600;cursor:pointer;list-style:none;
             display:flex;justify-content:space-between;gap:16px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-weight:800;font-size:18px;flex:0 0 18px;
                    text-align:center}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 22px 19px;font-size:14px;color:var(--mute);max-width:88ch;line-height:1.7}

/* CTA strip */
.strip{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
       padding:52px 0;text-align:center}
.strip h2{margin-top:0}
.strip p{color:var(--mute);margin:12px auto 0;max-width:60ch}
.strip .cta{justify-content:center;margin-top:26px}

/* form */
.formwrap{display:grid;grid-template-columns:.9fr 1.1fr;gap:52px;align-items:start}
@media(max-width:860px){.formwrap{grid-template-columns:1fr;gap:30px}}
form{background:#fff;border:1px solid var(--line);border-radius:14px;padding:30px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:560px){.row{grid-template-columns:1fr}}
label{display:block;font-size:13px;font-weight:600;margin-bottom:6px;color:var(--ink2)}
input,select,textarea{width:100%;padding:11px 13px;border:1px solid var(--line);
   border-radius:9px;font-size:14px;font-family:inherit;color:var(--ink);background:#fff}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--brand);
   box-shadow:0 0 0 3px rgba(14,124,102,.1)}
textarea{min-height:96px;resize:vertical}
.field{margin-bottom:16px}
form .btn{width:100%;padding:13px;font-size:15px;margin-top:6px;border:0;cursor:pointer}
.fine{font-size:12px;color:var(--mute);margin-top:12px;line-height:1.55}

/* footer */
footer{background:var(--ink);color:#9fb3b6;padding:52px 0 30px;font-size:13.5px}
footer .fgrid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
@media(max-width:900px){footer .fgrid{grid-template-columns:1fr 1fr}}
@media(max-width:600px){footer .fgrid{grid-template-columns:1fr}}
footer h5{color:#fff;font-size:14.5px;margin-bottom:13px;font-weight:700}
footer p{line-height:1.7}
footer ul{list-style:none}
footer li{padding:4px 0}
footer li a{color:#9fb3b6}
footer li a:hover{color:#fff;text-decoration:underline}
footer .dis{margin-top:28px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);
           font-size:12.2px;color:#7d9498;line-height:1.7}