:root{
    --navy:#12294a;
    --navy-2:#1f3864;
    --blue:#2e5c8a;
    --orange:#c55a11;
    --ink:#2b2b2b;
    --gray:#5f6673;
    --line:#e3e7ee;
    --bg:#f6f8fb;
    --white:#fff;
    --radius:14px;
    --max:1180px;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth;overflow-x:hidden}
  body{
    margin:0;
    overflow-x:hidden;
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;
    color:var(--ink);
    background:var(--white);
    line-height:1.65;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block}
  a{color:inherit;text-decoration:none}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
  .btn{
    display:inline-flex;align-items:center;gap:8px;
    padding:12px 20px;border-radius:999px;
    font-weight:600;font-size:15px;line-height:1;
    border:1px solid transparent;cursor:pointer;transition:.2s;
  }
  .btn-primary{background:var(--orange);color:#fff}
  .btn-primary:hover{background:#a94a0c}
  .btn-ghost{border-color:#c9d2e0;color:var(--navy);background:#fff}
  .btn-ghost:hover{border-color:var(--navy)}

  /* header */
  header{
    position:sticky;top:0;z-index:50;
    background:rgba(255,255,255,.92);
    backdrop-filter:blur(8px);
    border-bottom:1px solid var(--line);
  }
  .nav{display:flex;align-items:center;justify-content:space-between;height:68px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.08em;color:var(--navy)}
  .brand .mark{
    width:34px;height:34px;border-radius:10px;background:var(--navy);
    color:#fff;display:grid;place-items:center;font-size:16px;letter-spacing:0;
  }
  .brand small{display:block;font-size:10px;letter-spacing:.18em;color:var(--gray);font-weight:600}
  .nav-links{display:flex;gap:26px;font-size:14.5px;color:#3a4354}
  .nav-links a:hover{color:var(--orange)}
  .nav-cta{display:flex;gap:10px;align-items:center}

  /* hero */
  .hero{
    background:linear-gradient(180deg,#f2f5fa 0%, #ffffff 100%);
    padding:64px 0 40px;
  }
  .hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
  .hero-grid>*{min-width:0}
  .eyebrow{
    display:inline-block;font-size:12px;font-weight:700;letter-spacing:.16em;
    color:var(--orange);text-transform:uppercase;margin-bottom:14px;
  }
  h1{font-size:42px;line-height:1.15;margin:0 0 18px;color:var(--navy);letter-spacing:-.02em}
  .lead{font-size:18px;color:var(--gray);margin:0 0 26px;max-width:36em}
  .hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:22px}
  .hero-note{font-size:13.5px;color:var(--gray)}
  .hero-note strong{color:var(--navy)}
  .hero-img{
    background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px;
    box-shadow:0 18px 50px rgba(18,41,74,.10);
  }
  .hero-img img{border-radius:12px;max-height:560px;width:100%;object-fit:contain}

  /* stats */
  .stats{border-top:1px solid var(--line);border-bottom:1px solid var(--line);background:var(--white)}
  .stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
  .stat{padding:26px 20px;text-align:center;border-right:1px solid var(--line)}
  .stat:last-child{border-right:0}
  .stat b{display:block;font-size:28px;color:var(--navy);line-height:1.2}
  .stat span{font-size:13px;color:var(--gray)}

  /* sections */
  section{padding:72px 0}
  .section-head{max-width:720px;margin-bottom:36px}
  .section-head h2{font-size:32px;line-height:1.2;color:var(--navy);margin:0 0 10px;letter-spacing:-.01em}
  .section-head p{margin:0;color:var(--gray);font-size:16px}
  .kicker{font-size:12px;font-weight:700;letter-spacing:.16em;color:var(--orange);text-transform:uppercase;margin-bottom:10px}

  .cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
  .card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius);
    overflow:hidden;transition:.2s;display:flex;flex-direction:column;
  }
  .card:hover{transform:translateY(-3px);box-shadow:0 14px 34px rgba(18,41,74,.10)}
  .card .thumb{height:260px;position:relative;background:#fff;overflow:hidden}
  .card .thumb img{position:absolute;inset:18px;width:calc(100% - 36px);height:calc(100% - 36px);object-fit:contain}
  .card .body{padding:16px 18px 20px}
  .card h3{margin:0 0 6px;font-size:17px;color:var(--navy)}
  .card p{margin:0;font-size:13.5px;color:var(--gray)}
  .card .tags{margin-top:10px;display:flex;gap:6px;flex-wrap:wrap}
  .tag{font-size:11.5px;color:var(--blue);background:#eef3fa;border-radius:6px;padding:3px 7px}

  .more-line{margin-top:22px;font-size:14px;color:var(--gray)}
  .more-line a{color:var(--orange);font-weight:600}

  /* why */
  .why{background:var(--bg)}
  .why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
  .why-item h3{margin:14px 0 6px;font-size:17px;color:var(--navy)}
  .why-item p{margin:0;font-size:14px;color:var(--gray)}
  .ico{
    width:42px;height:42px;border-radius:11px;background:#fff;border:1px solid var(--line);
    display:grid;place-items:center;color:var(--orange)
  }

  /* process */
  .steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
  .step{position:relative;padding-top:18px;border-top:2px solid var(--line)}
  .step:before{
    counter-increment:step;content:"0" counter(step);
    position:absolute;top:-15px;left:0;background:#fff;padding-right:10px;
    font-weight:800;color:var(--orange);font-size:14px;letter-spacing:.08em;
  }
  .step h3{margin:8px 0 6px;font-size:16px;color:var(--navy)}
  .step p{margin:0;font-size:13.5px;color:var(--gray)}

  /* certs */
  .certs{background:var(--navy);color:#fff}
  .certs h2{color:#fff}
  .certs p{color:#c9d6ea}
  .badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}
  .badge{
    border:1px solid rgba(255,255,255,.25);border-radius:10px;
    padding:10px 16px;font-size:14px;letter-spacing:.04em;color:#fff
  }
  .badge small{display:block;font-size:11px;color:#9fb3d1;letter-spacing:.02em}

  /* contact */
  .contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
  .contact-box{background:var(--bg);border:1px solid var(--line);border-radius:18px;padding:28px}
  .contact-box h3{margin:0 0 8px;font-size:20px;color:var(--navy)}
  .contact-box p{margin:0 0 18px;color:var(--gray);font-size:14.5px}
  .contact-list{list-style:none;padding:0;margin:0;font-size:14.5px}
  .contact-list li{padding:10px 0;border-bottom:1px dashed var(--line);display:flex;gap:10px}
  .contact-list li:last-child{border-bottom:0}
  .contact-list b{min-width:82px;color:var(--navy);font-weight:600}
  .contact-list a{color:var(--blue)}
  .contact-list a:hover{color:var(--orange)}

  footer{background:#0d1f36;color:#93a6c0;font-size:13px;padding:30px 0}
  .foot{display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap}
  .foot a{color:#c9d6ea}
  .foot a:hover{color:#fff}

  @media (max-width:980px){
    .hero-grid,.contact-grid{grid-template-columns:1fr;gap:32px}
    h1{font-size:36px}
    .cards,.why-grid,.steps{grid-template-columns:repeat(2,1fr)}
    .stats-grid{grid-template-columns:repeat(2,1fr)}
    .stat{border-bottom:1px solid var(--line)}
    .nav-links{display:none}
  }
  @media (max-width:560px){
    h1{font-size:30px}
    .nav-cta .btn{padding:10px 12px;font-size:12.5px}
    .brand{font-size:14px}
    .cards,.why-grid,.steps,.stats-grid{grid-template-columns:1fr}
    section{padding:52px 0}
    .hero{padding:40px 0 28px}
  }
/* ---- inner pages ---- */
.page-hero{padding:64px 0 44px;background:linear-gradient(180deg,#f2f5fa 0%,#ffffff 100%);border-bottom:1px solid var(--line)}
.page-hero h1{font-size:44px;line-height:1.12;margin:0 0 14px;color:var(--navy);letter-spacing:-.02em;max-width:15em}
.page-hero p{max-width:44em;color:var(--gray);font-size:17px;margin:0}
.spec-table{width:100%;border-collapse:collapse;font-size:14px;background:#fff}
.spec-table th{background:var(--navy);color:#fff;text-align:left;padding:12px 14px;font-weight:600;font-size:13px;letter-spacing:.02em}
.spec-table td{padding:13px 14px;border-bottom:1px solid var(--line);color:#3a4354;vertical-align:top}
.spec-table tr:nth-child(even) td{background:var(--bg)}
.spec-table td:first-child{font-weight:600;color:var(--navy)}
.cta-band{background:var(--navy);padding:60px 0}
.cta-band h2{color:#fff;font-size:30px;margin:0 0 12px;line-height:1.2}
.split{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:start}
.check{list-style:none;padding:0;margin:0}
.check li{position:relative;padding:9px 0 9px 28px;color:var(--gray);font-size:15px;border-bottom:1px dashed var(--line)}
.check li:before{content:"✓";position:absolute;left:0;top:9px;color:var(--orange);font-weight:800}
@media (max-width:980px){
  .page-hero h1{font-size:34px}
  .split{grid-template-columns:1fr;gap:28px}
  .spec-table{display:block;overflow-x:auto;white-space:nowrap}
}

/* ---- inquiry form & download ---- */
.inquiry{display:grid;gap:12px;margin-top:18px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.inquiry label{display:block;font-size:12px;font-weight:600;color:var(--navy);letter-spacing:.02em}
.inquiry input,.inquiry textarea{width:100%;margin-top:5px;padding:10px 12px;border:1px solid var(--line);border-radius:9px;font:inherit;font-size:14px;background:#fff;color:#333}
.inquiry input:focus,.inquiry textarea:focus{outline:2px solid #c9d6ea;border-color:var(--navy)}
.form-note{font-size:12px;color:var(--gray);margin:2px 0 0}
.hero-dl{display:inline-block;margin-top:12px;font-size:13px;color:var(--navy);text-decoration:none;border-bottom:1px dashed currentColor}
@media (max-width:640px){.form-row{grid-template-columns:1fr}}

/* ---- factory video ---- */
.factory{background:var(--bg)}
.factory-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center}
.factory-video{margin:0;justify-self:center;max-width:340px;width:100%}
.factory-video video{width:100%;aspect-ratio:9/16;object-fit:cover;border-radius:18px;background:#0b1526;box-shadow:0 20px 40px rgba(18,41,74,.18);display:block}
.factory-video figcaption{font-size:12px;color:var(--gray);margin-top:10px;text-align:center;line-height:1.5}
.factory-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:22px}
.factory-stats div{background:#fff;border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.factory-stats b{display:block;font-size:22px;color:var(--navy);letter-spacing:-.01em}
.factory-stats span{font-size:12px;color:var(--gray)}
@media (max-width:980px){.factory-grid{grid-template-columns:1fr;gap:28px}.factory-video{max-width:320px}}

/* ---- brand logo ---- */
.mark-img{width:38px;height:38px;object-fit:contain;display:block;flex:0 0 auto}
.brand{gap:10px}

/* ---- factory photo strip ---- */
.factory-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:40px}
.factory-strip figure{margin:0}
.factory-strip img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:12px;display:block}
.factory-strip figcaption{font-size:12px;color:var(--gray);margin-top:6px;line-height:1.5}
@media (max-width:980px){.factory-strip{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.factory-strip{grid-template-columns:1fr}}

/* ---- model gallery ---- */
.model-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.model-grid figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden}
.model-grid img{width:100%;aspect-ratio:1/1;object-fit:contain;background:#fff;padding:14px;display:block}
.model-grid figcaption{font-size:12px;color:var(--gray);padding:0 14px 14px;line-height:1.5}
@media (max-width:980px){.model-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.model-grid{grid-template-columns:1fr}}