:root{
  --bg:#ffffff;
  --text:#0f172a;
  --muted:#475569;
  --brand:#0ea5e9;
  --accent:#10b981;
  --card:#f8fafc;
  --border:rgba(15,23,42,.1);
}
*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Inter,Arial,sans-serif;color:var(--text);background:var(--bg);line-height:1.55}
.wrap{max-width:1140px;margin:0 auto;padding:0 18px}
.site-header{position:sticky;top:0;background:rgba(255,255,255,.9);backdrop-filter:saturate(1.2) blur(6px);border-bottom:1px solid var(--border);z-index:20}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;min-height:64px}
.logo{font-weight:700;color:var(--text);text-decoration:none}
.logo .logo-mark{color:var(--brand);margin-right:8px}
.nav a{color:var(--muted);text-decoration:none;margin-left:16px}
.nav a:hover{color:var(--text)}
.nav .cta{padding:10px 14px;border-radius:10px;background:linear-gradient(90deg,var(--brand),#38bdf8);color:white}
.hero{background:linear-gradient(135deg,#e0f2fe 0%, #f0fdf4 100%);border-bottom:1px solid var(--border)}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:24px;padding:48px 0}
.hero-copy h1{font-size:clamp(28px,3.2vw,42px);margin:0 0 8px}
.hero-copy p{color:var(--muted);margin:0 0 14px}
.badges span{display:inline-block;border:1px solid var(--border);background:#fff;padding:6px 10px;border-radius:999px;margin:0 8px 8px 0;color:var(--muted)}
.btn{display:inline-block;background:var(--brand);color:#fff;text-decoration:none;padding:10px 16px;border-radius:10px}
.hero-art{background: url('../img/receivers/hero-receiver.png') center/contain no-repeat; min-height: 320px; border-radius: 16px; background-color:#f5f7fb; box-shadow: 0 8px 24px rgba(2,6,23,.10);}

.grid{display:grid;gap:18px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px}
@media(max-width:1000px){.grid-3{grid-template-columns:1fr} .hero-inner{grid-template-columns:1fr}}

section{padding:28px 0}
.card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:18px}
.card h2,.card h3{margin:0 0 8px}
.small{font-size:.925rem;color:var(--muted)}
.kpi{display:flex;gap:16px;flex-wrap:wrap}
.kpi .pill{background:#fff;border:1px solid var(--border);padding:8px 10px;border-radius:10px}

.table{width:100%;border-collapse:collapse}
.table th,.table td{border-bottom:1px solid var(--border);padding:8px 10px;text-align:left}
.table th{background:#fff}

.notice{background:#ecfeff;border:1px solid #bae6fd;color:#0c4a6e;border-radius:10px;padding:12px;margin:6px 0 0}

.product-grid-4{display:grid;gap:16px}
@media(min-width:1100px){.product-grid-4{grid-template-columns:1.1fr .9fr .9fr .8fr}}
.receiver-card{background:var(--card);border:1px solid var(--border);border-radius:14px;padding:12px;display:flex;align-items:center;justify-content:center}
.receiver-card img{max-width:100%;height:240px;object-fit:contain;border-radius:12px;background:#fff;padding:6px;border:1px solid var(--border)}
@media(min-width:1360px){.receiver-card img{height:260px}}

.cta-row{display:flex;gap:12px;flex-wrap:wrap}
footer{border-top:1px solid var(--border);margin-top:28px;padding:28px 0;background:#fcfcfd}
footer h4{margin:0 0 8px}
footer a{color:var(--muted)}

/* Added responsive media helpers */
.media-responsive, .product-img, .receiver-img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(15,23,42,.08);
  background: #fff;
}
.image-strip { display:grid; grid-template-columns: repeat(auto-fill,minmax(160px,1fr)); gap:12px; }
.image-strip img { width:100%; height:auto; object-fit:contain; background:#fff; padding:6px; border-radius:10px; border:1px solid rgba(15,23,42,.06); }
.card.receiver-card img { width:100%; max-width:420px; margin:auto; }

.hero .wrap.hero-inner{display:grid;grid-template-columns:1.2fr 1fr;gap:24px;align-items:center;}
@media(max-width:900px){.hero .wrap.hero-inner{grid-template-columns:1fr;}.hero-art{background: url('../img/receivers/hero-receiver.png') center/contain no-repeat; min-height: 320px; border-radius: 16px; background-color:#f5f7fb; box-shadow: 0 8px 24px rgba(2,6,23,.10);}}

/* ===== EXPANDED SITE — v4 additions ===== */

/* 4-column footer grid responsive */
.site-footer { border-top:1px solid var(--border); padding:32px 0 20px; background:#f8fafc; margin-top:40px; }
.site-footer h4 { margin:0 0 10px; font-size:.95rem; }
.site-footer ul { list-style:none; padding:0; margin:0; }
.site-footer ul li { margin-bottom:5px; }
.site-footer a { color:var(--muted); text-decoration:none; font-size:.88rem; }
.site-footer a:hover { color:var(--text); }
.site-footer p { font-size:.88rem; color:var(--muted); margin:0 0 6px; }
@media(max-width:860px){
  .site-footer .wrap > div > div { grid-template-columns:1fr 1fr !important; }
}
@media(max-width:520px){
  .site-footer .wrap > div > div { grid-template-columns:1fr !important; }
}

/* Nav — mobile hamburger */
.nav-toggle { display:none; background:none; border:none; cursor:pointer; padding:8px; }
.nav-toggle span { display:block; width:22px; height:2px; background:var(--text); margin:5px 0; border-radius:2px; transition:.2s; }
@media(max-width:860px){
  .nav-toggle { display:block; }
  .nav { display:none; flex-direction:column; position:absolute; top:64px; left:0; right:0; background:#fff; border-bottom:1px solid var(--border); padding:12px 18px; z-index:100; box-shadow:0 4px 16px rgba(0,0,0,.08); }
  .nav.open { display:flex; }
  .nav a { margin:6px 0; font-size:1rem; }
  .site-header .wrap { position:relative; }
}

/* Breadcrumb */
nav.breadcrumb { font-size:.82rem; color:var(--muted); margin:16px 0 0; }
nav.breadcrumb a { color:var(--muted); text-decoration:none; }
nav.breadcrumb a:hover { color:var(--text); }

/* Location page span-2 on grid-3 */
@media(min-width:860px){
  .grid-3 .span-2 { grid-column: span 2; }
}

/* Notice variants */
.notice-warn { background:#fef3c7; border:1px solid #fde68a; color:#92400e; border-radius:10px; padding:12px; margin:6px 0; }
.notice-red { background:#fef2f2; border:1px solid #fecaca; color:#991b1b; border-radius:10px; padding:12px; margin:6px 0; }

/* Article content area */
.article-body { max-width:780px; }
.article-body h2 { margin-top:32px; margin-bottom:8px; }
.article-body p { color:var(--muted); line-height:1.7; margin-bottom:14px; }

/* Industries icon cards */
.ind-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:20px; margin:24px 0; }