/* ============================================================
   PRODUCT PAGE SHARED STYLES
   ============================================================ */

.product-hero {
  background: linear-gradient(135deg, #111111 0%, #8b0000 50%, #cc0000 100%);
  padding: 120px 0 60px;
  position: relative;
  overflow: hidden;
}
.product-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.product-hero-content { position:relative;z-index:2;max-width:1200px;margin:0 auto;padding:0 24px; }
.breadcrumb-nav { display:flex;align-items:center;gap:8px;margin-bottom:24px;flex-wrap:wrap; }
.breadcrumb-nav a { color:rgba(255,255,255,0.7);text-decoration:none;font-size:0.85rem;transition:color 0.2s; }
.breadcrumb-nav a:hover { color:#fff; }
.breadcrumb-nav .sep { color:rgba(255,255,255,0.4);font-size:0.85rem; }
.breadcrumb-nav .current { color:rgba(255,255,255,0.85);font-size:0.85rem;font-weight:600; }
.product-hero-badge { display:inline-block;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.3);color:rgba(255,255,255,0.9);font-size:0.75rem;font-weight:700;letter-spacing:0.1em;text-transform:uppercase;padding:5px 14px;border-radius:999px;margin-bottom:16px; }
.product-hero h1 { font-size:clamp(2rem,5vw,3.2rem);font-weight:800;color:#fff;line-height:1.15;margin-bottom:16px; }
.product-hero-sub { font-size:1.1rem;color:rgba(255,255,255,0.85);max-width:620px;line-height:1.7;margin-bottom:32px; }
.hero-specs-bar { display:flex;gap:32px;flex-wrap:wrap; }
.hero-spec { display:flex;flex-direction:column;gap:4px; }
.hero-spec strong { font-size:1.3rem;font-weight:800;color:#fff;line-height:1; }
.hero-spec span { font-size:0.78rem;color:rgba(255,255,255,0.65);text-transform:uppercase;letter-spacing:0.06em; }

.product-body { max-width:1200px;margin:0 auto;padding:60px 24px;display:grid;grid-template-columns:1fr 320px;gap:48px;align-items:start; }
@media(max-width:900px){ .product-body{grid-template-columns:1fr;gap:32px;} }

.section-heading { font-size:1.5rem;font-weight:800;color:#111;margin-bottom:16px;padding-bottom:12px;border-bottom:3px solid transparent;border-image:linear-gradient(90deg,#cc0000,#ff4444) 1; }
.section-intro { font-size:1rem;color:#4a5568;line-height:1.8;margin-bottom:28px; }

.advantages-grid { display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:36px; }
@media(max-width:600px){ .advantages-grid{grid-template-columns:1fr;} }
.advantage-item { display:flex;align-items:flex-start;gap:12px;background:#f5f7fa;border-radius:10px;padding:14px 16px;border-left:3px solid #cc0000;transition:transform 0.2s,box-shadow 0.2s; }
.advantage-item:hover { transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,0.08); }
.advantage-icon { font-size:1.4rem;flex-shrink:0;margin-top:1px; }
.advantage-text strong { display:block;font-size:0.88rem;color:#111;font-weight:700;margin-bottom:2px; }
.advantage-text span { font-size:0.8rem;color:#718096;line-height:1.5; }

.sheet-specs-card { background:linear-gradient(135deg,#111 0%,#8b0000 50%,#cc0000 100%);border-radius:14px;padding:28px 30px;color:#fff;margin-bottom:36px;display:grid;grid-template-columns:1fr 1fr 1fr;gap:20px; }
@media(max-width:600px){ .sheet-specs-card{grid-template-columns:1fr 1fr;} }
.sheet-spec-item { text-align:center; }
.sheet-spec-item .ss-value { font-size:1.5rem;font-weight:800;color:#fff;line-height:1;margin-bottom:6px; }
.sheet-spec-item .ss-label { font-size:0.75rem;color:rgba(255,255,255,0.7);text-transform:uppercase;letter-spacing:0.05em; }

.applications-grid { display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:36px; }
@media(max-width:600px){ .applications-grid{grid-template-columns:1fr;} }
.app-card { background:#fff;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,0.07);padding:20px 22px;border-top:4px solid transparent;border-image:linear-gradient(90deg,#cc0000,#ff4444) 1;transition:transform 0.2s,box-shadow 0.2s; }
.app-card:hover { transform:translateY(-3px);box-shadow:0 8px 28px rgba(0,0,0,0.11); }
.app-card .app-icon { font-size:1.8rem;margin-bottom:10px;display:block; }
.app-card h3 { font-size:0.95rem;font-weight:700;color:#111;margin-bottom:6px; }
.app-card p { font-size:0.82rem;color:#718096;line-height:1.65;margin:0; }

.industries-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:36px; }
@media(max-width:600px){ .industries-grid{grid-template-columns:1fr 1fr;} }
.industry-chip { background:#fff;border:2px solid #e2e8f0;border-radius:10px;padding:14px 12px;text-align:center;font-size:0.82rem;font-weight:600;color:#111;transition:all 0.2s; }
.industry-chip:hover { border-color:#cc0000;background:#fff5f5;color:#cc0000; }
.industry-chip .ind-icon { font-size:1.4rem;display:block;margin-bottom:6px; }

.temp-specs { display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:36px; }
@media(max-width:500px){ .temp-specs{grid-template-columns:1fr;} }
.temp-card { background:linear-gradient(135deg,#111,#cc0000);border-radius:12px;padding:22px 20px;color:#fff;text-align:center; }
.temp-card .temp-label { font-size:0.75rem;text-transform:uppercase;letter-spacing:0.1em;color:rgba(255,255,255,0.65);margin-bottom:8px; }
.temp-card .temp-name { font-size:1.2rem;font-weight:800;color:#fff;margin-bottom:6px; }
.temp-card .temp-range { font-size:0.95rem;color:rgba(255,255,255,0.9);font-weight:600; }
.temp-card .temp-sub { font-size:0.75rem;color:rgba(255,255,255,0.55);margin-top:4px; }

.applications-list { display:flex;flex-direction:column;gap:24px;margin-bottom:36px; }
.application-card { background:#fff;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,0.07);padding:24px 26px;border-top:4px solid transparent;border-image:linear-gradient(90deg,#cc0000,#ff4444) 1;transition:transform 0.2s,box-shadow 0.2s; }
.application-card:hover { transform:translateY(-3px);box-shadow:0 8px 28px rgba(0,0,0,0.11); }
.app-header { display:flex;align-items:center;gap:14px;margin-bottom:12px; }
.app-icon { width:44px;height:44px;background:linear-gradient(135deg,#cc0000,#ee3333);border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;flex-shrink:0; }
.app-header h3 { font-size:1.05rem;font-weight:700;color:#111;margin:0; }
.app-body { font-size:0.9rem;color:#4a5568;line-height:1.75; }

.related-grid { display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:48px; }
@media(max-width:768px){ .related-grid{grid-template-columns:1fr 1fr;} }
@media(max-width:480px){ .related-grid{grid-template-columns:1fr;} }
.related-card { background:#fff;border-radius:12px;box-shadow:0 2px 12px rgba(0,0,0,0.07);padding:22px 20px;text-decoration:none;color:inherit;display:block;border-top:4px solid #e2e8f0;transition:all 0.2s; }
.related-card:hover { border-top-color:#cc0000;transform:translateY(-4px);box-shadow:0 8px 28px rgba(0,0,0,0.11); }
.related-card .rc-icon { font-size:2rem;margin-bottom:10px;display:block; }
.related-card h4 { font-size:0.95rem;font-weight:700;color:#111;margin-bottom:6px; }
.related-card p { font-size:0.8rem;color:#718096;line-height:1.6;margin:0; }

.product-sidebar { display:flex;flex-direction:column;gap:20px; }
.sidebar-card { background:#fff;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,0.07);overflow:hidden; }
.sidebar-card-header { background:linear-gradient(135deg,#111,#cc0000);padding:16px 20px;color:#fff; }
.sidebar-card-header h3 { font-size:0.95rem;font-weight:700;margin:0; }
.sidebar-card-header p { font-size:0.75rem;color:rgba(255,255,255,0.7);margin:4px 0 0; }
.sidebar-card-body { padding:18px 20px; }
.spec-table { width:100%;border-collapse:collapse; }
.spec-table tr { border-bottom:1px solid #f0f4f8; }
.spec-table tr:last-child { border-bottom:none; }
.spec-table td { padding:10px 4px;font-size:0.83rem;vertical-align:top; }
.spec-table td:first-child { font-weight:600;color:#4a5568;width:45%; }
.spec-table td:last-child { color:#111;font-weight:500; }

.cta-sidebar { background:linear-gradient(135deg,#cc0000,#ee3333);border-radius:12px;padding:24px 20px;text-align:center;color:#fff; }
.cta-sidebar h3 { font-size:1rem;font-weight:700;margin-bottom:8px; }
.cta-sidebar p { font-size:0.82rem;color:rgba(255,255,255,0.9);margin-bottom:16px;line-height:1.6; }
.cta-sidebar .btn-white { display:block;background:#fff;color:#cc0000;font-weight:700;font-size:0.88rem;padding:12px 20px;border-radius:8px;text-decoration:none;margin-bottom:10px;transition:transform 0.15s,box-shadow 0.15s; }
.cta-sidebar .btn-white:hover { transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,0.15); }
.cta-sidebar .contact-detail { font-size:0.8rem;color:rgba(255,255,255,0.85);margin-top:12px; }
.cta-sidebar .contact-detail a { color:#fff;text-decoration:none; }

.nav-products-card { background:#fff;border-radius:12px;box-shadow:0 2px 16px rgba(0,0,0,0.07);overflow:hidden; }
.nav-products-card h3 { font-size:0.85rem;font-weight:700;color:#fff;background:#111;padding:14px 18px;margin:0; }
.nav-products-list { list-style:none;padding:0;margin:0; }
.nav-products-list li { border-bottom:1px solid #f0f4f8; }
.nav-products-list li:last-child { border-bottom:none; }
.nav-products-list a { display:flex;align-items:center;gap:10px;padding:12px 18px;color:#4a5568;text-decoration:none;font-size:0.85rem;font-weight:500;transition:all 0.15s; }
.nav-products-list a:hover { background:#f5f7fa;color:#cc0000;padding-left:22px; }
.nav-products-list a.active { background:#fff5f5;color:#cc0000;font-weight:700;border-left:3px solid #cc0000; }

.cta-section { background:linear-gradient(135deg,#111 0%,#8b0000 50%,#cc0000 100%);padding:64px 24px; }
.cta-container { max-width:1000px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap; }
.cta-content h2 { font-size:1.7rem;font-weight:800;color:#fff;margin-bottom:8px; }
.cta-content p { color:rgba(255,255,255,0.8);font-size:1rem;line-height:1.6;max-width:500px; }
.cta-actions { display:flex;gap:14px;flex-wrap:wrap; }
.btn-outline-white { display:inline-flex;align-items:center;gap:8px;padding:14px 28px;border:2px solid rgba(255,255,255,0.6);border-radius:8px;color:#fff;font-weight:600;font-size:0.95rem;text-decoration:none;transition:all 0.2s; }
.btn-outline-white:hover { background:rgba(255,255,255,0.15);border-color:#fff; }

/* ============================================================
   PRODUCT PAGE — RESPONSIVE
   ============================================================ */

/* ── 768px ── */
@media (max-width: 768px) {
  .product-hero { padding: 100px 0 40px; }
  .product-hero-content { padding: 0 16px; }
  .product-hero h1 { font-size: clamp(1.6rem, 6vw, 2.4rem); }
  .product-hero-sub { font-size: 1rem; }
  .hero-specs-bar { gap: 20px; }
  .hero-spec strong { font-size: 1.1rem; }

  .product-body { padding: 40px 16px; }
  .section-heading { font-size: 1.25rem; }

  .sheet-specs-card { padding: 20px; gap: 16px; }
  .sheet-spec-item .ss-value { font-size: 1.2rem; }

  .cta-section { padding: 48px 16px; }
  .cta-container { flex-direction: column; align-items: flex-start; gap: 24px; }
  .cta-content h2 { font-size: 1.35rem; }
  .cta-actions { width: 100%; }
  .cta-actions .btn,
  .cta-actions .btn-outline-white { width: 100%; justify-content: center; }

  .industries-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ── 480px ── */
@media (max-width: 480px) {
  .product-hero { padding: 88px 0 32px; }
  .product-hero h1 { font-size: clamp(1.4rem, 7vw, 2rem); }
  .hero-specs-bar { gap: 16px; }
  .hero-spec { min-width: calc(50% - 8px); }

  .product-body { padding: 28px 12px; }

  .sheet-specs-card { grid-template-columns: 1fr 1fr; padding: 16px; }

  .advantages-grid { grid-template-columns: 1fr; }
  .applications-grid { grid-template-columns: 1fr; }
  .industries-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: 1fr; }

  .cta-section { padding: 36px 12px; }
  .cta-content h2 { font-size: 1.2rem; }

  .sidebar-card-body { padding: 14px; }
  .spec-table td { font-size: 0.78rem; padding: 8px 4px; }
}