:root{
    --ink:#2b2b35; --sub:#6b6b78; --line:#e8e4dc; --bg:#faf8f4; --card:#ffffff;
    --accent:#e0522a; --accent2:#2b6cb0;
  }
  *{margin:0;padding:0;box-sizing:border-box;}
  body{font-family:"Segoe UI","Helvetica Neue",Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.7;}
  a{color:inherit;text-decoration:none;}

  /* ===== Nav ===== */
  .nav{position:sticky;top:0;z-index:50;background:rgba(250,248,244,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
  .nav-in{max-width:1180px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between;}
  .brand{font-weight:800;letter-spacing:.5px;font-size:1.05em;}
  .brand span{color:var(--accent);}
  .nav-links{display:flex;gap:22px;font-size:.9em;color:var(--sub);}
  .nav-links a:hover{color:var(--accent);}
  .nav-cta{background:var(--ink);color:#fff;padding:8px 18px;border-radius:999px;font-size:.85em;font-weight:600;}
  .nav-cta:hover{background:var(--accent);}

  /* ===== Hero ===== */
  .hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#2b2b35 0%,#3a3444 55%,#4a3a52 100%);color:#fff;}
  .hero-glow{position:absolute;width:520px;height:520px;border-radius:50%;filter:blur(90px);opacity:.35;}
  .hero-glow.g1{background:#e0522a;top:-160px;right:-80px;}
  .hero-glow.g2{background:#2b6cb0;bottom:-180px;left:-100px;}
  .hero-in{position:relative;max-width:1180px;margin:0 auto;padding:84px 20px 72px;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;}
  .hero-kicker{display:inline-block;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.25);padding:6px 16px;border-radius:999px;font-size:.8em;letter-spacing:1px;margin-bottom:20px;}
  .hero h1{font-size:2.7em;line-height:1.15;margin-bottom:16px;font-weight:800;}
  .hero h1 em{font-style:normal;color:#ffb08a;}
  .hero p{color:#cfc9d6;max-width:520px;font-size:1.02em;margin-bottom:26px;}
  .hero-ctas{display:flex;gap:14px;flex-wrap:wrap;}
  .btn{display:inline-block;padding:13px 28px;border-radius:999px;font-weight:700;font-size:.95em;}
  .btn-primary{background:var(--accent);color:#fff;}
  .btn-primary:hover{background:#c9441e;}
  .btn-ghost{border:1.5px solid rgba(255,255,255,.5);color:#fff;}
  .btn-ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);}
  .hero-grid{display:grid;grid-template-columns:1fr;gap:14px;}
  .hero-card{border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 18px 40px rgba(0,0,0,.35);}
  .hero-card img{width:100%;aspect-ratio:1/1;object-fit:cover;display:block;}

  /* ===== Marquee ===== */
  .marquee{overflow:hidden;background:var(--ink);color:#fff;padding:12px 0;}
  .marquee-track{display:inline-flex;white-space:nowrap;animation:scroll 26s linear infinite;}
  .marquee-track span{padding:0 30px;font-weight:700;letter-spacing:1px;font-size:.9em;}
  @keyframes scroll{from{transform:translateX(0);}to{transform:translateX(-50%);}}
  @media (prefers-reduced-motion:reduce){.marquee-track{animation:none;}}

  /* ===== Section shell ===== */
  section{padding:72px 20px;}
  .sec-in{max-width:1180px;margin:0 auto;}
  .sec-head{text-align:center;max-width:680px;margin:0 auto 44px;}
  .sec-head .k{color:var(--accent);font-weight:700;letter-spacing:2px;font-size:.78em;text-transform:uppercase;margin-bottom:10px;}
  .sec-head h2{font-size:2em;font-weight:800;margin-bottom:10px;}
  .sec-head p{color:var(--sub);}

  /* ===== Product grid ===== */
  .prod-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
  .prod-card{background:var(--card);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:transform .25s ease, box-shadow .25s ease;display:flex;flex-direction:column;}
  .prod-card:hover{transform:translateY(-6px);box-shadow:0 18px 40px rgba(43,43,53,.12);}
  .prod-img{position:relative;aspect-ratio:1/1;overflow:hidden;background:#fff;}
  .prod-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease;}
  .prod-card:hover .prod-img img{transform:scale(1.05);}
  .prod-tag{position:absolute;top:12px;left:12px;background:rgba(43,43,53,.85);color:#fff;font-size:.72em;font-weight:700;padding:4px 12px;border-radius:999px;letter-spacing:.5px;}
  .prod-body{padding:16px 16px 18px;display:flex;flex-direction:column;flex:1;}
  .prod-body h3{font-size:1.02em;font-weight:700;margin-bottom:6px;line-height:1.35;}
  .prod-body p{font-size:.85em;color:var(--sub);flex:1;margin-bottom:12px;}
  .prod-link{font-size:.85em;font-weight:700;color:var(--accent);}
  .prod-link:hover{text-decoration:underline;}

  /* ===== Techniques ===== */
  .tech-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
  .tech-card{border-radius:18px;overflow:hidden;background:var(--card);border:1px solid var(--line);}
  .tech-card img{width:100%;aspect-ratio:4/3;object-fit:cover;display:block;}
  .tech-body{padding:18px;}
  .tech-body .n{font-size:.78em;color:var(--accent);font-weight:800;letter-spacing:1px;}
  .tech-body h3{font-size:1.1em;margin:6px 0 8px;}
  .tech-body p{font-size:.88em;color:var(--sub);margin-bottom:10px;}
  .tech-badge{display:inline-block;background:#f4efe6;color:#7a6a4f;font-size:.74em;font-weight:700;padding:3px 12px;border-radius:999px;}

  /* ===== Capability ===== */
  .cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
  .cap-card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:26px;}
  .cap-ico{font-size:1.6em;margin-bottom:12px;}
  .cap-card h3{font-size:1.08em;margin-bottom:12px;}
  .cap-card ul{list-style:none;}
  .cap-card li{font-size:.88em;color:var(--sub);padding:5px 0 5px 20px;position:relative;}
  .cap-card li::before{content:"\2713";position:absolute;left:0;color:var(--accent);font-weight:800;}

  /* ===== Spec table ===== */
  .spec-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:18px;background:var(--card);}
  table.spec{width:100%;border-collapse:collapse;font-size:.88em;min-width:640px;}
  table.spec th{background:#f4efe6;text-align:left;padding:12px 18px;font-weight:700;white-space:nowrap;}
  table.spec td{padding:11px 18px;border-top:1px solid var(--line);color:var(--sub);}
  table.spec tr td:first-child{font-weight:600;color:var(--ink);white-space:nowrap;}

  /* ===== Uses ===== */
  .use-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;}
  .use-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;text-align:center;}
  .use-card .ico{font-size:1.7em;margin-bottom:8px;}
  .use-card h4{font-size:.95em;margin-bottom:4px;}
  .use-card p{font-size:.8em;color:var(--sub);}

  /* ===== Steps ===== */
  .step-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;counter-reset:step;}
  .step-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:20px;text-align:center;position:relative;}
  .step-card .n{width:34px;height:34px;line-height:34px;margin:0 auto 10px;border-radius:50%;background:var(--ink);color:#fff;font-weight:800;font-size:.9em;}
  .step-card h4{font-size:.92em;margin-bottom:4px;}
  .step-card p{font-size:.78em;color:var(--sub);}

  /* ===== FAQ ===== */
  .faq-wrap{max-width:820px;margin:0 auto;}
  details{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px 20px;margin-bottom:10px;}
  details summary{cursor:pointer;font-weight:700;list-style:none;position:relative;padding-right:26px;font-size:.98em;}
  details summary::after{content:"+";position:absolute;right:2px;top:0;color:var(--accent);font-size:1.3em;font-weight:800;}
  details[open] summary::after{content:"\2013";}
  details p{margin-top:8px;color:var(--sub);font-size:.9em;}

  /* ===== Footer ===== */
  footer{background:var(--ink);color:#cfc9d6;padding:44px 20px 28px;}
  .foot-in{max-width:1180px;margin:0 auto;display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:.88em;}
  .foot-brand{font-weight:800;color:#fff;font-size:1.05em;margin-bottom:8px;}
  .foot-brand span{color:#ffb08a;}

  @media (max-width:960px){
    .hero-in{grid-template-columns:1fr;padding:56px 20px;}
    .hero h1{font-size:2.1em;}
    .prod-grid{grid-template-columns:repeat(2,1fr);}
    .tech-grid,.cap-grid,.use-grid{grid-template-columns:repeat(2,1fr);}
    .step-grid{grid-template-columns:repeat(3,1fr);}
  }
  @media (max-width:560px){
    .prod-grid,.tech-grid,.cap-grid,.use-grid{grid-template-columns:1fr;}
    .step-grid{grid-template-columns:repeat(2,1fr);}
    .nav-links{display:none;}
    .hero h1{font-size:1.7em;}
  }