:root{
      --ink:#20272b;
      --muted:#687277;
      --line:#dfe4e6;
      --soft:#f5f7f7;
      --accent:#7b2730;
      --accent-dark:#601e25;
      --white:#fff;
      --max:1160px;
      --radius:18px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
      color:var(--ink);
      background:var(--white);
      line-height:1.55;
    }
    img{max-width:100%;display:block}
    a{color:inherit;text-decoration:none}
    .container{width:min(calc(100% - 40px),var(--max));margin:auto}
    .header{
      border-bottom:1px solid var(--line);
      background:rgba(255,255,255,.96);
      position:sticky;top:0;z-index:10;
    }
    .nav{
      min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .logo{font-weight:750;letter-spacing:.13em;font-size:1.05rem}
    .navlinks{display:flex;align-items:center;gap:28px;font-size:.94rem;color:#485156}
    .navlinks a:hover{text-decoration:underline;text-underline-offset:4px}
    .button{
      display:inline-flex;align-items:center;justify-content:center;
      padding:12px 20px;border-radius:999px;
      background:var(--accent);color:#fff;font-weight:700;
      border:1px solid var(--accent);transition:.2s;
    }
    .button:hover{background:var(--accent-dark);border-color:var(--accent-dark)}
    .button.secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
    .hero{
      background:linear-gradient(180deg,#fafbfb 0%,#f1f4f4 100%);
      padding:72px 0 80px;
    }
    .hero-grid{
      display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:center;
    }
    .eyebrow{
      font-size:.78rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;
      color:var(--accent);margin-bottom:18px;
    }
    h1{font-size:clamp(2.6rem,5vw,4.7rem);line-height:1.03;letter-spacing:-.045em;margin:0 0 24px;max-width:650px}
    h2{font-size:clamp(2rem,3.5vw,3rem);line-height:1.08;letter-spacing:-.035em;margin:0 0 18px}
    h3{font-size:1.25rem;line-height:1.2;margin:0 0 9px}
    .lead{font-size:1.2rem;color:var(--muted);max-width:590px;margin:0 0 30px}
    .actions{display:flex;gap:12px;flex-wrap:wrap}
    .hero-note{font-size:.84rem;color:var(--muted);margin-top:18px}
.product-stage{
  width:55%;
  min-height:420px;
  aspect-ratio:1 / 1;
  margin-left:auto;
  margin-right:auto;
  border-radius:28px;
  background:#e8ecec;
  display:grid;
  place-items:center;
  position:relative;
  overflow:hidden;
}

    .product-stage:after{
      content:"";position:absolute;width:430px;height:110px;border-radius:50%;
      background:rgba(0,0,0,.10);bottom:72px;filter:blur(22px);
    }
    /* Temporary product placeholder: replace this whole .mock-product with your real photo */
    .mock-product{position:relative;z-index:1;width:300px;height:300px}
    .plate{
      position:absolute;inset:15px;border-radius:50%;background:#7b2730;
      box-shadow:0 22px 45px rgba(0,0,0,.17);
    }
    .detector{
      position:absolute;width:225px;height:225px;left:37px;top:0;
      border-radius:50%;background:#fdfdfd;
      box-shadow:0 18px 35px rgba(0,0,0,.18);
    }
    .detector:before{
      content:"";position:absolute;width:8px;height:8px;border-radius:50%;
      background:#adb4b7;left:50%;top:28px;transform:translateX(-50%);
    }
    .detector:after{
      content:"";position:absolute;width:105px;height:105px;border-radius:50%;
      border:1px solid #e1e4e5;left:50%;top:50%;transform:translate(-50%,-50%);
    }
    .section{padding:92px 0}
    .section.alt{background:var(--soft)}
    .center{text-align:center}
    .narrow{max-width:720px;margin:0 auto}
    .three{
      display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:48px
    }
    .step{
      background:#fff;border:1px solid var(--line);border-radius:var(--radius);
      padding:30px;
    }
    .number{
      width:38px;height:38px;border-radius:50%;background:var(--ink);color:#fff;
      display:grid;place-items:center;font-weight:750;margin-bottom:24px;
    }
    .step p,.feature p,.trade p{color:var(--muted);margin:0}
    
.how-it-works {
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:70px;
  align-items:center;
  max-width:1000px;
  margin:48px auto 0;
}

.installation-image {
  width:100%;
  max-width:380px;
  margin:auto;
  border-radius:24px;
  overflow:hidden;
}

.installation-image img {
  width:100%;
  height:auto;
  display:block;
}

.installation-steps {
  display:grid;
  gap:30px;
}

.installation-step {
  display:grid;
  grid-template-columns:48px 1fr;
  gap:18px;
  align-items:start;
}

.installation-step .number {
  margin:0;
}

.installation-step p {
  color:var(--muted);
  margin:0;
}

@media(max-width:820px) {
  .how-it-works {
    grid-template-columns:1fr;
    gap:40px;
  }

  .installation-image {
    max-width:500px;
  }
}

.gallery-section {
  background:var(--soft);
}

.section-heading {
  max-width:680px;
  margin:0 auto 42px;
  text-align:center;
}

.photo-gallery {
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr;
  grid-template-rows:260px 260px;
  gap:18px;
  max-width:1050px;
  margin:0 auto;
}

.gallery-photo {
  overflow:hidden;
  border-radius:20px;
  background:#fff;
}

.gallery-photo img {
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}

.gallery-photo-large {
  grid-row:1 / 3;
}

@media(max-width:820px) {
  .photo-gallery {
    grid-template-columns:1fr 1fr;
    grid-template-rows:260px 260px;
  }

  .gallery-photo-large {
    grid-column:1 / 3;
    grid-row:auto;
  }
}

@media(max-width:560px) {
  .photo-gallery {
    grid-template-columns:1fr;
    grid-template-rows:auto;
  }

  .gallery-photo-large {
    grid-column:auto;
  }

  .gallery-photo {
    height:280px;
  }
}


    .problem{
      display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;
    }
    .feature-list{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:30px}
    .feature{
      border-top:1px solid var(--line);padding-top:17px;
    }
    .feature strong{display:block;margin-bottom:4px}
    /*
    .diagram{
      background:#fff;border:1px solid var(--line);border-radius:24px;padding:34px;
      display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;
    }
    .diagram-item{text-align:center;min-width:120px}
    .arrow{font-size:1.5rem;color:#9aa2a6}
    */
.diagram {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 34px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
}

.diagram-item {
  width: 100%;
  text-align: center;
}

.arrow {
  width: 100%;
  text-align: center;
  font-size: 1.5rem;
  line-height: 1;
  color: #9aa2a6;
}
    .circle{
      width:104px;height:104px;border-radius:50%;margin:auto auto 12px;
      background:#f1f3f3;border:1px solid #d7dcdd;display:grid;place-items:center;
      font-size:.75rem;color:#697276;font-weight:700;
    }

    .trade{
      display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:center;
    }
    .trade-card{
      background:var(--ink);color:#fff;border-radius:26px;padding:42px;
    }
    .trade-card p{color:#cbd1d3}
    .trade-points{display:grid;gap:14px;margin-top:26px}
    .trade-points div{padding:13px 0;border-top:1px solid rgba(255,255,255,.16)}
    .coming{
      border:1px solid var(--line);border-radius:26px;padding:50px;
      background:linear-gradient(135deg,#fbfbfb,#f0f3f3);
      display:grid;grid-template-columns:1fr .8fr;gap:40px;align-items:center;
    }
    .coming-badge{
      display:inline-block;font-size:.72rem;font-weight:800;letter-spacing:.12em;
      text-transform:uppercase;color:var(--accent);margin-bottom:16px;
    }
.universal{
  height:220px;
  border-radius:22px;
  background:#e2e7e7;
  display:grid;
  place-items:center;
  overflow:hidden;
}

.universal img{
  width:100%;
  height:100%;
  object-fit:contain;
}
    .universal .ring{width:155px;height:155px;border:18px solid #7b2730;border-radius:50%;position:relative}
    .universal .ring:after{content:"";position:absolute;inset:26px;border:1px dashed #adb5b7;border-radius:50%}
    .faq{max-width:820px;margin:45px auto 0}
    details{border-top:1px solid var(--line);padding:21px 0}
    summary{cursor:pointer;font-weight:700;list-style:none}
    summary::-webkit-details-marker{display:none}
    details p{color:var(--muted);max-width:700px}
    .footer{background:#20272b;color:#fff;padding:55px 0 28px}
    .footer-grid{display:grid;grid-template-columns:1fr auto;gap:40px}
    .footer p{color:#bfc6c9;max-width:500px}
    .footer-links{display:flex;gap:25px;flex-wrap:wrap;color:#dfe4e6;font-size:.9rem}
    .copyright{border-top:1px solid rgba(255,255,255,.13);margin-top:40px;padding-top:20px;color:#9fa8ac;font-size:.8rem}
    @media(max-width:820px){
      .nav{min-height:68px}
      .navlinks{display:none}
      .hero{padding:52px 0 55px}
      .hero-grid,.problem,.trade,.coming{grid-template-columns:1fr;gap:38px}
      .product-stage{min-height:390px}
      .three{grid-template-columns:1fr}
      .section{padding:68px 0}
      .footer-grid{grid-template-columns:1fr}
    }
    @media(max-width:520px){
      .container{width:min(calc(100% - 28px),var(--max))}
      h1{font-size:2.65rem}
      .lead{font-size:1.08rem}
      .actions .button{width:100%}
      .feature-list{grid-template-columns:1fr}
      .product-stage{min-height:330px}
      .mock-product{transform:scale(.82)}
      .coming{padding:32px 24px}
      .trade-card{padding:32px 25px}
    }
.responsive-table {
  width:100%;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  border:1px solid var(--line);
  border-radius:18px;
  background:#fff;
}

.responsive-table table {
  width:100%;
  min-width:620px;
  border-collapse:collapse;
}

.responsive-table th {
  background:var(--ink);
  color:#fff;
  text-align:left;
  font-weight:600;
  padding:16px 18px;
  font-size:.9rem;
}

.responsive-table td {
  padding:16px 18px;
  border-top:1px solid var(--line);
  color:var(--ink);
  vertical-align:top;
}

.responsive-table tr:first-child td {
  border-top:0;
}

.responsive-table .yes {
  color:#2f6b45;
  font-weight:600;
}

.responsive-table .no {
  color:var(--accent);
  font-weight:600;
}

/* =========================
   Buy page
   ========================= */

.buy-page {
  background:var(--soft);
  min-height:calc(100vh - 76px);
  padding:70px 0 90px;
}

.buy-card {
  width:min(100%, 760px);
  margin:0 auto;
  background:#fff;
  border:1px solid var(--line);
  border-radius:28px;
  padding:52px;
  text-align:center;
  box-shadow:0 18px 50px rgba(32,39,43,.06);
}

.buy-product-image {
  width:min(100%, 300px);
  aspect-ratio:1 / 1;
  margin:0 auto 38px;
  border-radius:22px;
  background:#f1f3f3;
  display:grid;
  place-items:center;
  overflow:hidden;
}

.buy-product-image img {
  width:100%;
  height:100%;
  object-fit:contain;
}

.buy-card h1 {
  font-size:clamp(2rem,4vw,3rem);
  line-height:1.08;
  letter-spacing:-.035em;
  margin:0 0 12px;
}

.buy-product-name {
  font-size:1.15rem;
  font-weight:700;
  margin:0 0 34px;
}

.buy-divider {
  height:1px;
  background:var(--line);
  margin:0 auto 34px;
  max-width:520px;
}

.buy-card h2 {
  font-size:1.65rem;
  margin:0 0 14px;
}

.buy-card .buy-copy {
  color:var(--muted);
  max-width:570px;
  margin:0 auto 28px;
  font-size:1.05rem;
}

.buy-card .button {
  font-size:.95rem;
  padding:14px 25px;
}

.buy-note {
  color:var(--muted);
  font-size:.82rem;
  max-width:520px;
  margin:16px auto 0;
}

.buy-back {
  display:inline-block;
  margin-top:32px;
  color:var(--muted);
  font-size:.9rem;
}

.buy-back:hover {
  text-decoration:underline;
  text-underline-offset:4px;
}

@media(max-width:520px) {
  .buy-page {
    padding:35px 0 55px;
  }

  .buy-card {
    padding:32px 22px;
    border-radius:22px;
  }

  .buy-product-image {
    width:240px;
    margin-bottom:30px;
  }

  .buy-card .button {
    width:100%;
  }
}