/* Achen China — wear parts site (2026-10-19 rebuild)
   Navy header, white body, orange CTA. 45/55 image-text rows on desktop,
   full-width stacked rows on mobile. */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#1a365d;--navy-2:#0d1b2e;--steel:#2d3748;--muted:#6b7684;
  --line:#e2e8f0;--soft:#f7fafc;--white:#fff;--orange:#ff8c00;--orange-d:#e67e00;
  --green:#25d366;--accent:#2b6cb0;
  --ph-bg:#eef1f5;--ph-bd:#b6c0cd;--ph-fg:#5a6577;
}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{font:16px/1.7 system-ui,-apple-system,"Segoe UI","Microsoft YaHei",sans-serif;
     color:var(--steel);background:var(--white)}
img{display:block;max-width:100%}
a{color:var(--accent)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px}

/* ---------- header ---------- */
.hdr{background:var(--navy);position:sticky;top:0;z-index:100}
.hdr-in{display:flex;align-items:center;gap:20px;min-height:72px}
.logo{font-size:21px;font-weight:800;color:#fff;text-decoration:none;white-space:nowrap;letter-spacing:.2px}
.logo span{color:#63b3ed}
.nav{display:flex;align-items:center;gap:4px;margin-left:auto;list-style:none}
.nav>li>a{display:block;color:#cbd5e0;text-decoration:none;font-size:14.5px;font-weight:600;
          padding:10px 12px;border-radius:4px;white-space:nowrap}
.nav>li>a:hover{color:#fff}
.nav>li>a.on{color:#fff}
.nav a.wa{color:#4ade80}
.nav a.email{color:#a0aec0;font-size:13px}
.nav a.cta{background:var(--orange);color:#fff;padding:11px 20px;margin-left:6px}
.nav a.cta:hover{background:var(--orange-d)}
.nav-toggle{display:none;margin-left:auto;background:transparent;border:0;color:#fff;
            font-size:24px;line-height:1;padding:6px 8px;cursor:pointer;font-family:inherit}

/* ---------- language switcher ---------- */
.lang{position:relative;margin-left:8px}
.lang-btn{display:flex;align-items:center;gap:7px;background:rgba(255,255,255,.08);
          border:1px solid rgba(255,255,255,.16);color:#fff;border-radius:4px;
          font:600 13px/1 inherit;padding:9px 11px;cursor:pointer;font-family:inherit}
.lang-btn:hover{background:rgba(255,255,255,.14)}
.lang-btn svg{width:18px;height:12px;border-radius:2px;display:block;flex:0 0 auto}
.lang-menu{display:none;position:absolute;right:0;top:calc(100% + 8px);min-width:190px;
           background:#fff;border:1px solid var(--line);border-radius:6px;
           box-shadow:0 12px 32px rgba(0,0,0,.18);padding:6px;z-index:120}
.lang.open .lang-menu{display:block}
.lang-menu a{display:flex;align-items:center;gap:10px;padding:9px 11px;border-radius:4px;
             color:var(--steel);text-decoration:none;font-size:14px;font-weight:600}
.lang-menu a:hover{background:var(--soft)}
.lang-menu a[aria-current]{color:var(--orange);background:#fff8ee}
.lang-menu svg{width:20px;height:13px;border-radius:2px;display:block;flex:0 0 auto}

/* ---------- geo banner ---------- */
.geo{display:none;background:#fff8ee;border-bottom:1px solid #f6d8a8;
     font-size:14px;color:#7a4a00}
.geo-in{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:10px 24px;
        max-width:1180px;margin:0 auto}
.geo a{color:#b25c00;font-weight:700;text-decoration:underline;white-space:nowrap}
.geo button{margin-left:auto;background:transparent;border:0;color:#7a4a00;font-size:20px;
            line-height:1;cursor:pointer;padding:0 4px;font-family:inherit}

/* ---------- hero ---------- */
.hero{background:var(--navy);color:#fff;text-align:center;padding:38px 0 26px}
.hero h1{font-size:42px;line-height:1.12;font-weight:800;max-width:920px;margin:0 auto 12px}
.hero-sub{font-size:17.5px;line-height:1.6;color:#cbd5e0;max-width:800px;margin:0 auto 22px}
.hero-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}
.hero-media{margin:26px auto 0;max-width:1180px;aspect-ratio:2/1;min-height:200px;
            background:var(--navy-2);position:relative;overflow:hidden}
.hero-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}

/* ---------- field / harvester banner ---------- */
.field-sec{position:relative;isolation:isolate;overflow:hidden;background:var(--navy-2);
           color:#fff;padding:104px 0;text-align:center}
.field-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
          object-position:58% 50%;z-index:0}
.field-ov{position:absolute;inset:0;background:rgba(0,0,0,.30);z-index:1}
.field-in{position:relative;z-index:2;max-width:900px}
.field-sec h2{font-size:32px;line-height:1.25;font-weight:800;margin-bottom:14px}
.field-sec p{font-size:17px;line-height:1.7;color:#e2e8f0;max-width:760px;margin:0 auto 26px}
.field-badges{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;list-style:none}
.field-badges li{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.24);
                 border-radius:40px;padding:10px 20px;font-size:14.5px;font-weight:700;
                 backdrop-filter:blur(4px)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
     padding:15px 32px;border-radius:4px;font-weight:700;font-size:16px;
     text-decoration:none;border:2px solid transparent;transition:.18s;line-height:1.2}
.btn-cta{background:var(--orange);color:#fff}
.btn-cta:hover{background:var(--orange-d);transform:scale(1.02);
               box-shadow:0 6px 18px rgba(255,140,0,.28)}
.btn-out{background:transparent;color:#fff;border-color:#63b3ed}
.btn-out:hover{background:rgba(255,255,255,.1)}
.btn-block{width:100%}

/* ---------- category rows ---------- */
.cats{padding:20px 0 10px}
.cat{padding:60px 0;border-bottom:1px solid var(--line)}
.cat:last-child{border-bottom:0}
.cat-in{display:grid;grid-template-columns:45% 55%;gap:56px;align-items:center}
.cat:nth-child(even) .cat-in .cat-media{order:2}
/* 3:2 matches the supplied 1263x848 collection shots almost exactly, so the
   part labels near the edges are not cropped. `contain` keeps the full frame
   visible even if a photo has a slightly different ratio. */
.cat-media{position:relative;aspect-ratio:3/2;background:#fff;
           border:1px solid var(--line);border-radius:10px;overflow:hidden;
           cursor:zoom-in}
.cat-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;z-index:2}
.cat-media .ph{position:absolute;inset:0;display:flex;flex-direction:column;
               align-items:center;justify-content:center;text-align:center;gap:6px;
               padding:20px;color:var(--ph-fg);background:var(--ph-bg);
               border:2px dashed var(--ph-bd);border-radius:9px}
.ph-id{font-size:15px;font-weight:800;letter-spacing:.6px;color:var(--steel)}
.ph-note{font-size:12px;line-height:1.45;max-width:34ch}
.cat h2{font-size:30px;line-height:1.25;font-weight:800;color:var(--navy);margin-bottom:22px}
.cat h2 .num{color:var(--orange);margin-right:10px}
.cat-details{display:flex;flex-direction:column;gap:16px;margin-bottom:26px}
.dl-row{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:start}
.dl-row dt{font-size:12px;font-weight:800;letter-spacing:.6px;text-transform:uppercase;
           color:var(--muted);padding-top:3px;line-height:1.4}
.dl-row dd{font-size:15.5px;line-height:1.65;color:var(--steel)}
.cat-cta{display:inline-flex;align-items:center;justify-content:center;
         background:var(--orange);color:#fff;text-decoration:none;font-weight:700;
         font-size:16px;padding:14px 34px;border-radius:4px;transition:.18s}
.cat-cta:hover{background:var(--orange-d);transform:scale(1.02)}

/* ---------- 24h trust band ---------- */
.band{background:var(--soft);border-top:1px solid var(--line);border-bottom:1px solid var(--line);
      padding:44px 0;text-align:center}
.band h2{font-size:25px;color:var(--navy);font-weight:800;margin-bottom:8px}
.band p{color:var(--muted);font-size:16px}
.band .band-btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:24px}

/* ---------- products page ---------- */
.page-head{background:var(--navy);color:#fff;padding:56px 0}
.page-head h1{font-size:38px;font-weight:800;line-height:1.15;margin-bottom:10px}
.page-head p{color:#cbd5e0;font-size:17px;max-width:760px}
.chips{display:flex;flex-wrap:wrap;gap:10px;list-style:none}
.chips li{background:var(--soft);border:1px solid var(--line);border-left:4px solid var(--orange);
          border-radius:5px;padding:10px 16px;font-size:15px;font-weight:600;color:var(--navy)}

/* ---------- contact ---------- */
.contact{padding:70px 0 90px}
.contact-grid{display:grid;grid-template-columns:1fr 1.3fr;gap:40px;align-items:start}
.contact-info h2{font-size:26px;color:var(--navy);font-weight:800;margin-bottom:18px}
.ci{padding:16px 0;border-top:1px solid var(--line)}
.ci:first-of-type{border-top:0;padding-top:0}
.ci-label{display:block;font-size:11.5px;font-weight:800;letter-spacing:.6px;
          text-transform:uppercase;color:var(--muted);margin-bottom:4px}
.ci a,.ci span{font-size:16.5px;font-weight:700;color:var(--navy);text-decoration:none;word-break:break-word}
.ci a:hover{text-decoration:underline}
.form{background:#fff;border:1px solid var(--line);border-radius:10px;padding:32px;
      box-shadow:0 6px 28px rgba(0,0,0,.05)}
.form h2{font-size:22px;color:var(--navy);font-weight:800;margin-bottom:6px}
.form-lead{font-size:14px;color:var(--muted);margin-bottom:22px}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:800;color:var(--navy);margin-bottom:7px}
.req{color:#e53e3e}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.field input,.field textarea{width:100%;padding:13px 15px;border:1px solid #cbd5e0;
      border-radius:5px;font:inherit;font-size:16px;background:#fff;color:var(--steel)}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);
      box-shadow:0 0 0 3px rgba(43,108,176,.14)}
.field textarea{min-height:120px;resize:vertical}
.upload{border:2px dashed var(--ph-bd);border-radius:6px;padding:16px;background:var(--soft)}
.upload input[type=file]{width:100%;font-size:14px}
.up-note{font-size:12px;color:var(--muted);margin-top:8px;line-height:1.5}
.form-err{display:none;background:#fff5f5;border:1px solid #e53e3e;border-radius:6px;
          padding:13px 15px;color:#c53030;font-size:14px;margin-top:14px}
.form-ok{display:none;background:#f0fff4;border:1px solid #38a169;border-radius:8px;
         padding:28px;text-align:center}
.form-ok strong{display:block;color:#2f855a;font-size:19px;margin-bottom:6px}

/* ---------- quote modal ---------- */
.modal{position:fixed;inset:0;z-index:300;background:rgba(6,12,22,.72);
       display:none;align-items:flex-start;justify-content:center;padding:32px 16px;
       overflow-y:auto;-webkit-overflow-scrolling:touch}
.modal.open{display:flex}
.modal-box{position:relative;width:100%;max-width:620px;background:#fff;border-radius:10px;
           padding:30px;box-shadow:0 24px 60px rgba(0,0,0,.35)}
.modal-box>h2{font-size:22px;color:var(--navy);font-weight:800;margin-bottom:6px;padding-right:34px}
.modal-lead{font-size:14px;color:var(--muted);margin-bottom:20px}
.modal-close{position:absolute;top:10px;right:12px;background:transparent;border:0;
             color:var(--muted);font-size:28px;line-height:1;cursor:pointer;padding:4px 8px;
             font-family:inherit}
.modal-close:hover{color:var(--navy)}
.modal .form-ok{display:none}
.modal.done form{display:none}
.modal.done .form-ok{display:block}

/* toast */
.toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom,0px));
       transform:translate(-50%,16px);z-index:500;max-width:min(560px,92vw);
       background:#2f855a;color:#fff;border-radius:8px;padding:16px 20px;
       box-shadow:0 12px 34px rgba(0,0,0,.28);font-size:15px;line-height:1.55;
       opacity:0;pointer-events:none;transition:.25s}
.toast.show{opacity:1;transform:translate(-50%,0)}
.toast strong{display:block;font-size:16px;margin-bottom:2px}

/* ---------- footer ---------- */
footer{background:var(--navy);color:#a0aec0;padding:48px 0 32px;font-size:14px}
.fcols{display:grid;grid-template-columns:1.7fr 1fr 1fr;gap:36px}
.fcol h4{color:#fff;font-size:12.5px;font-weight:800;letter-spacing:.6px;
         text-transform:uppercase;margin-bottom:12px}
.fcol p{line-height:1.7}
.fcol a{display:block;color:#90cdf4;text-decoration:none;padding:4px 0}
.fcol a:hover{text-decoration:underline}
.fbar{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
      margin-top:34px;padding-top:20px;border-top:1px solid rgba(255,255,255,.12);font-size:13px}
.fpriv{color:#90cdf4;text-decoration:none;margin-left:8px;white-space:nowrap}
.fpriv:hover{text-decoration:underline}
.flangs{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px;font-size:13px}
.flangs a{color:#90cdf4;text-decoration:none}
.flangs a:hover{text-decoration:underline}
.flangs .cur{color:#fff;font-weight:700}
.flangs .sep{color:rgba(255,255,255,.3)}

/* ---------- mobile sticky bar ---------- */
.mbar{display:none;position:fixed;left:0;right:0;bottom:0;z-index:150;
      gap:10px;padding:10px 12px;background:#fff;border-top:1px solid var(--line);
      box-shadow:0 -4px 18px rgba(0,0,0,.1)}
.mbar a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;
        min-height:50px;border-radius:6px;text-decoration:none;font-weight:800;font-size:15px}
.mbar .m-wa{background:var(--green);color:#fff}
.mbar .m-cta{background:var(--orange);color:#fff}

/* ---------- image zoom ---------- */
.zoom{position:fixed;inset:0;z-index:400;background:rgba(6,12,22,.94);
      display:none;align-items:center;justify-content:center;padding:20px}
.zoom.open{display:flex}
.zoom img{max-width:96vw;max-height:90vh;object-fit:contain;border-radius:4px}
.zoom-close{position:absolute;top:14px;right:18px;background:transparent;border:0;
            color:#fff;font-size:34px;line-height:1;cursor:pointer;font-family:inherit}

/* ---------- responsive ---------- */
@media(max-width:1120px){
  .nav li.mail{display:none}  /* keep the desktop nav on one line */
}
@media(max-width:900px){
  .nav li.mail{display:block} /* back on mobile, inside the dropdown */
  .hdr-in{min-height:64px;flex-wrap:wrap;position:relative}
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;margin:0;
       flex-direction:column;align-items:stretch;gap:0;
       background:var(--navy);border-top:1px solid rgba(255,255,255,.1);
       padding:8px 24px 16px;z-index:110;box-shadow:0 12px 24px rgba(0,0,0,.25)}
  .nav.open{display:flex}
  .nav>li>a{padding:13px 0;border-top:1px solid rgba(255,255,255,.08);font-size:15.5px}
  .nav>li>a.cta{margin:10px 0 0;text-align:center}
  .lang{margin:10px 0 0}
  .lang-btn{width:100%;justify-content:space-between;padding:12px}
  .lang-menu{position:static;box-shadow:none;border:0;margin-top:6px;width:100%}

  .hero{padding:28px 0 22px}
  .hero h1{font-size:28px}
  .hero-sub{font-size:15.5px}
  .hero-media{margin-top:20px;aspect-ratio:3/2}

  /* mobile: show the whole banner photo, text underneath — no cover-cropping */
  .field-sec{padding:0 0 34px}
  .field-bg{position:relative;inset:auto;width:100%;height:auto;
            aspect-ratio:1584/672;object-fit:cover;object-position:50% 50%}
  .field-ov{display:none}
  .field-in{padding-top:26px}
  .field-sec h2{font-size:23px}
  .field-sec p{font-size:15.5px;margin-bottom:20px}
  .field-badges{gap:8px}
  .field-badges li{padding:8px 14px;font-size:13.5px}

  .modal{padding:0}
  .modal-box{max-width:none;min-height:100%;border-radius:0;
             padding:22px 20px calc(28px + env(safe-area-inset-bottom,0px))}
  .modal-box>h2{font-size:20px}
  .modal .row2{grid-template-columns:1fr}

  .cats{padding:6px 0 0}
  .cat{padding:34px 0}
  .cat-in{grid-template-columns:1fr;gap:22px}
  .cat-content{display:contents}
  .cat-title{order:1}
  .cat-media{order:2;aspect-ratio:3/2;width:100%}
  .cat-details{order:3;margin-bottom:0}
  .cat-cta{order:4;width:100%;min-height:52px;font-size:16.5px}
  .cat-in .cat-media{order:2}
  .cat:nth-child(even) .cat-in .cat-media{order:2}
  .cat h2{font-size:23px;margin-bottom:6px}
  .dl-row{grid-template-columns:1fr;gap:3px}
  .dl-row dt{padding-top:0}

  .contact-grid{grid-template-columns:1fr;gap:28px}
  .contact{padding:44px 0 80px}
  .row2{grid-template-columns:1fr}
  .form{padding:24px 20px}
  .page-head{padding:40px 0}
  .page-head h1{font-size:28px}

  .fcols{grid-template-columns:1fr;gap:26px}
  .mbar{display:flex}
  body{padding-bottom:76px}
  .wrap{padding:0 20px}
}
@media(max-width:400px){
  .hero h1{font-size:25px}
  .cat h2{font-size:21px}
  .btn{padding:14px 22px;font-size:15px}
}

/* --- blog listing --- */
.bloglist{max-width:840px;margin:0 auto;padding:8px 0 64px}
.post{display:block;padding:24px 0;border-bottom:1px solid var(--line);text-decoration:none}
.post h2{font-size:20px;font-weight:700;color:var(--navy);margin:0 0 8px;line-height:1.35}
.post p{margin:0 0 10px;font-size:15px;line-height:1.65;color:var(--muted)}
.post-more{font-size:14px;font-weight:600;color:var(--orange)}
.post:hover h2{color:var(--accent)}
@media(max-width:700px){.post h2{font-size:18px}.bloglist{padding:0 0 44px}}

/* --- article --- */
.art{padding:40px 0 70px}
.art .wrap{max-width:800px}
.crumbs{margin-bottom:18px}
.crumbs a{font-size:14px;font-weight:600;color:var(--accent);text-decoration:none}
.art h1{font-size:34px;font-weight:800;line-height:1.2;color:var(--navy);margin:0 0 14px}
.art-lead{font-size:17px;line-height:1.6;color:var(--muted);margin:0 0 28px;padding-bottom:24px;border-bottom:1px solid var(--line)}
.art-body{font-size:17px;line-height:1.75;color:var(--steel)}
.art-body h2{font-size:23px;font-weight:700;color:var(--navy);margin:34px 0 12px;line-height:1.3}
.art-body p{margin:0 0 16px}
.art-body ul{margin:0 0 16px;padding-left:22px}
.art-body li{margin-bottom:8px}
.art-cta{margin-top:44px;padding:26px 28px;background:var(--soft);border-left:4px solid var(--orange);border-radius:4px}
.art-cta h3{font-size:19px;color:var(--navy);margin:0 0 8px}
.art-cta p{margin:0 0 16px;color:var(--muted);font-size:15px}
@media(max-width:700px){.art{padding:26px 0 48px}.art h1{font-size:27px}.art-body{font-size:16px}.art-body h2{font-size:20px}}