/* =========================================================
   NMB Steel Tech — Global Stylesheet
   ========================================================= */

:root {
  --color-navy-950: #071c2e;
  --color-navy-900: #0a3a5c;
  --color-navy-800: #0d4d78;
  --color-navy-700: #0f63a0;
  --color-steel-600: #5c6b75;
  --color-steel-400: #8f9ba3;
  --color-steel-200: #d3d7da;
  --color-steel-100: #e9ebec;
  --color-steel-50:  #f5f6f7;
  --color-amber-600: #d98a00;
  --color-amber-500: #faa21a;
  --color-amber-400: #fbbe5c;
  --color-white: #ffffff;
  --color-ink: #16232f;
  --color-success: #1a7a4c;
  --color-error: #b3311f;
  --color-brand-blue: #0072bb;
  --color-brand-gray: #939498;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --container-w: 1200px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 3px rgba(10,24,38,0.08), 0 1px 2px rgba(10,24,38,0.06);
  --shadow-md: 0 4px 14px rgba(10,24,38,0.10);
  --shadow-lg: 0 12px 32px rgba(10,24,38,0.16);
  --transition: 180ms ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body, h1, h2, h3, h4, p, ul, ol, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
input, textarea, select { font: inherit; }

body {
  font-family: var(--font-sans);
  color: var(--color-ink);
  background: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: var(--container-w);
  margin-inline: auto;
  padding-inline: 20px;
}

h1, h2, h3, h4 { line-height: 1.25; font-weight: 700; color: var(--color-navy-950); }
h1 { font-size: clamp(2rem, 4vw, 3rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.3rem; }
p { color: var(--color-navy-800); }

.section { padding: 72px 0; }
.section-alt { background: var(--color-steel-50); }
.section-dark { background: var(--color-navy-950); color: var(--color-steel-100); }
.section-dark h2, .section-dark h3 { color: var(--color-white); }
.section-dark p { color: var(--color-steel-200); }

.eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-amber-600);
  background: rgba(232,144,26,0.12);
  padding: 5px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
}
.section-dark .eyebrow { color: var(--color-amber-400); background: rgba(242,168,62,0.14); }

.section-head { max-width: 720px; margin-bottom: 40px; }
.section-head.center { margin-inline: auto; text-align: center; }
.section-head p { margin-top: 12px; font-size: 1.05rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--color-amber-500); color: var(--color-navy-950); }
.btn-primary:hover { background: var(--color-amber-400); box-shadow: var(--shadow-md); }
.btn-outline { background: transparent; border-color: rgba(255,255,255,0.5); color: var(--color-white); }
.btn-outline:hover { background: rgba(255,255,255,0.1); }
.btn-navy { background: var(--color-navy-900); color: var(--color-white); }
.btn-navy:hover { background: var(--color-navy-800); box-shadow: var(--shadow-md); }
.btn-sm { padding: 9px 18px; font-size: 0.85rem; }
.btn-block { width: 100%; justify-content: center; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 500;
  background: rgba(10,24,38,0.97);
  backdrop-filter: saturate(160%) blur(6px);
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-white);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--color-amber-500), var(--color-amber-600));
  display: flex; align-items: center; justify-content: center;
  color: var(--color-navy-950);
  font-weight: 900;
  font-size: 1.05rem;
  flex-shrink: 0;
}
.brand small {
  display: block;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--color-steel-400);
  text-transform: uppercase;
}
.brand-logo {
  height: 44px;
  width: auto;
  display: block;
  background: var(--color-white);
  padding: 5px 10px;
  border-radius: 6px;
}
.footer-brand .brand-logo { height: 40px; }

.main-nav { display: flex; align-items: center; gap: 4px; }
.main-nav a {
  color: var(--color-steel-200);
  font-weight: 600;
  font-size: 0.94rem;
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.main-nav a:hover, .main-nav a[aria-current="page"] {
  color: var(--color-white);
  background: rgba(255,255,255,0.08);
}
.header-actions { display: flex; align-items: center; gap: 14px; }
.header-actions .btn { padding: 10px 20px; }

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--color-white);
  align-items: center;
  justify-content: center;
}
.nav-toggle svg { width: 20px; height: 20px; }
.nav-toggle svg line { transition: transform 220ms ease, opacity 150ms ease; transform-box: fill-box; transform-origin: center; }
.nav-toggle[aria-expanded="true"] svg line:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] svg line:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] svg line:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.site-nav-drawer { display: none; }

.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(10,24,38,0.6);
  opacity: 0;
  pointer-events: none;
  transition: opacity 260ms ease;
  z-index: 485;
}
.nav-backdrop.open { opacity: 1; pointer-events: auto; }

/* ---------- Preloader ---------- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: var(--color-navy-950);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 420ms ease, visibility 420ms ease;
}
#preloader.hidden { opacity: 0; visibility: hidden; pointer-events: none; }
#preloader .preloader-mark {
  width: 52px; height: 52px;
  border-radius: 50%;
  border: 4px solid rgba(255,255,255,0.15);
  border-top-color: var(--color-amber-500);
  animation: preloader-spin 0.8s linear infinite;
}
@keyframes preloader-spin {
  to { transform: rotate(360deg); }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-navy-950);
  color: var(--color-steel-300);
  padding: 64px 0 0;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-col h4 {
  color: var(--color-white);
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  margin-bottom: 18px;
}
.footer-col p, .footer-col li { color: var(--color-steel-400); font-size: 0.92rem; }
.footer-col ul li { margin-bottom: 10px; }
.footer-col a:hover { color: var(--color-amber-400); }
.footer-brand p { margin-top: 14px; max-width: 320px; }
.footer-social { display: flex; gap: 10px; margin-top: 18px; }
.footer-social a {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-steel-200);
}
.footer-social a:hover { background: var(--color-amber-500); color: var(--color-navy-950); }
.footer-social svg { width: 16px; height: 16px; }
.footer-contact li { display: flex; gap: 10px; align-items: flex-start; }
.footer-contact svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px; color: var(--color-amber-400); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 22px 0;
  font-size: 0.85rem;
  color: var(--color-steel-400);
  flex-wrap: wrap;
  gap: 10px;
}
.footer-bottom a:hover { color: var(--color-amber-400); }

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--color-amber-500);
  color: var(--color-navy-950);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity var(--transition), transform var(--transition);
  z-index: 400;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }
.back-to-top svg { width: 20px; height: 20px; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: 16px 0;
  font-size: 0.85rem;
  background: var(--color-steel-50);
  border-bottom: 1px solid var(--color-steel-100);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.breadcrumb li { display: flex; align-items: center; gap: 6px; color: var(--color-steel-600); }
.breadcrumb a:hover { color: var(--color-amber-600); }
.breadcrumb li[aria-current] { color: var(--color-navy-900); font-weight: 600; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(1100px 500px at 85% -10%, rgba(250,162,26,0.20), transparent 60%),
    linear-gradient(160deg, rgba(7,28,46,0.94), rgba(10,58,92,0.90)),
    url("../images/facility-warehouse.jpg") center / cover no-repeat;
  color: var(--color-white);
  padding: 96px 0 88px;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.035) 0 1px, transparent 1px 64px);
  pointer-events: none;
}
.hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero h1 { color: var(--color-white); margin-bottom: 18px; }
.hero p.lead { font-size: 1.12rem; color: var(--color-steel-200); max-width: 560px; margin-bottom: 30px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 40px;
}
.hero-stat {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-md);
  padding: 18px;
}
.hero-stat strong { display: block; font-size: 1.7rem; color: var(--color-amber-400); }
.hero-stat span { font-size: 0.85rem; color: var(--color-steel-300); }

.hero-visual {
  position: relative;
  aspect-ratio: 1/1;
  background: linear-gradient(135deg, rgba(255,255,255,0.08), rgba(255,255,255,0.02));
  border: 1px solid rgba(255,255,255,0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  clip-path: polygon(0 28px, 28px 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}
.hero-visual svg { width: 100%; height: 100%; }
.hero-visual-tag {
  position: absolute;
  left: 22px; bottom: 22px;
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--color-amber-400);
  background: rgba(10,24,38,0.6);
  border: 1px solid rgba(242,168,62,0.35);
  padding: 5px 10px;
}

/* ---------- Technical diagram (product cross-section visual) ---------- */
.product-visual {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 32px;
  align-items: center;
  background: var(--color-steel-50);
  border: 1px solid var(--color-steel-100);
  padding: 32px;
  clip-path: polygon(0 22px, 22px 0, 100% 0, 100% calc(100% - 22px), calc(100% - 22px) 100%, 0 100%);
}
.product-diagram {
  background: var(--color-white);
  border: 1px solid var(--color-steel-100);
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-diagram svg { width: 100%; height: auto; max-width: 300px; }
.product-diagram.photo { padding: 0; overflow: hidden; height: 260px; align-self: stretch; }
.product-diagram.photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.spec-tile-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.spec-tile {
  background: var(--color-white);
  border: 1px solid var(--color-steel-100);
  border-left: 3px solid var(--color-amber-500);
  padding: 16px 18px;
}
.spec-tile strong { display: block; font-size: 1.15rem; color: var(--color-navy-950); line-height: 1.3; }
.spec-tile span { font-size: 0.78rem; font-weight: 600; letter-spacing: 0.03em; text-transform: uppercase; color: var(--color-steel-600); }

.page-hero {
  background:
    linear-gradient(160deg, rgba(7,28,46,0.92), rgba(10,58,92,0.90)),
    url("../images/pipes-applications.jpg") center / cover no-repeat;
  color: var(--color-white);
  padding: 56px 0;
  text-align: center;
}
.page-hero h1 { color: var(--color-white); }
.page-hero p { color: var(--color-steel-200); max-width: 640px; margin: 12px auto 0; }

/* ---------- Cards / Grids ---------- */
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }

.card {
  background: var(--color-white);
  border: 1px solid var(--color-steel-100);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: transparent; }
.card-icon {
  width: 48px; height: 48px;
  border-radius: var(--radius-sm);
  background: var(--color-navy-900);
  color: var(--color-amber-400);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}
.card-icon svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: 10px; }
.card p { font-size: 0.94rem; }

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-steel-100);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition), box-shadow var(--transition);
}
.product-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.product-card-media {
  height: 150px;
  background: linear-gradient(135deg, var(--color-navy-900), var(--color-navy-700));
  display: flex; align-items: center; justify-content: center;
  color: var(--color-amber-400);
  position: relative;
}
.product-card-media svg { width: 56px; height: 56px; }
.product-card-media.photo { background: var(--color-navy-900); }
.product-card-media.photo img { width: 100%; height: 100%; object-fit: cover; opacity: 0.92; }
.product-card-tag {
  position: absolute;
  top: 12px; left: 12px;
  background: rgba(255,255,255,0.12);
  color: var(--color-white);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 4px 10px;
  border-radius: 100px;
  text-transform: uppercase;
}
.product-card-body { padding: 20px 22px 24px; display: flex; flex-direction: column; flex: 1; }
.product-card-body h3 { font-size: 1.08rem; margin-bottom: 8px; }
.product-card-body p { font-size: 0.9rem; flex: 1; margin-bottom: 16px; }
.product-card-meta {
  display: flex;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--color-steel-600);
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.product-card-meta span { display: flex; align-items: center; gap: 5px; }
.link-arrow { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; color: var(--color-navy-900); font-size: 0.9rem; }
.link-arrow svg { width: 16px; height: 16px; transition: transform var(--transition); }
.link-arrow:hover svg { transform: translateX(4px); }
.link-arrow:hover { color: var(--color-amber-600); }

/* Filter bar for products listing */
.filter-bar { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.filter-btn {
  padding: 9px 18px;
  border-radius: 100px;
  border: 1px solid var(--color-steel-200);
  background: var(--color-white);
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--color-navy-800);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover { border-color: var(--color-amber-500); }
.filter-btn.active { background: var(--color-navy-950); border-color: var(--color-navy-950); color: var(--color-white); }

/* ---------- Specs table ---------- */
.specs-table { width: 100%; border-collapse: collapse; font-size: 0.94rem; }
.specs-table tr { border-bottom: 1px solid var(--color-steel-100); }
.specs-table tr:last-child { border-bottom: none; }
.specs-table th, .specs-table td { text-align: left; padding: 13px 16px; }
.specs-table th { width: 42%; color: var(--color-navy-800); font-weight: 600; background: var(--color-steel-50); }
.specs-table td { color: var(--color-navy-900); }

.feature-list li, .check-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 12px;
  font-size: 0.96rem;
  color: var(--color-navy-800);
}
.feature-list svg, .check-list svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px; color: var(--color-amber-600); }

.feature-list li strong, .cons-list li strong { color: var(--color-navy-950); }

.cons-list li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-bottom: 12px;
  font-size: 0.96rem;
  color: var(--color-navy-800);
}
.cons-list svg { width: 18px; height: 18px; flex-shrink: 0; margin-top: 3px; color: var(--color-error); }

.pros-cons-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.pros-cons-grid h3 { font-size: 1rem; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.pros-cons-grid h3.pros-heading { color: var(--color-success); }
.pros-cons-grid h3.cons-heading { color: var(--color-error); }

.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--color-steel-100);
  color: var(--color-navy-800);
}

/* Product detail layout */
.product-detail { display: grid; grid-template-columns: 1.4fr 1fr; gap: 48px; align-items: start; }
.product-sidebar {
  position: sticky;
  top: 96px;
  background: var(--color-steel-50);
  border: 1px solid var(--color-steel-100);
  border-radius: var(--radius-md);
  padding: 26px;
}
.product-sidebar h4 { margin-bottom: 14px; }
.product-sidebar ul li { margin-bottom: 10px; }
.product-sidebar ul a { font-size: 0.92rem; color: var(--color-navy-800); display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 8px 0; border-bottom: 1px dashed var(--color-steel-200); }
.product-sidebar ul a svg { width: 15px; height: 15px; flex: 0 0 15px; }
.product-sidebar ul a:hover { color: var(--color-amber-600); }
.product-sidebar .btn { margin-top: 18px; }

.content-block { margin-bottom: 36px; }
.content-block h2 { margin-bottom: 14px; font-size: 1.5rem; }
.content-block h3 { margin-bottom: 12px; font-size: 1.15rem; }

/* ---------- Photo banner ---------- */
.photo-banner {
  position: relative;
  height: 380px;
  overflow: hidden;
  margin: 0;
}
.photo-banner img { width: 100%; height: 100%; object-fit: cover; display: block; }
.photo-banner figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  background: linear-gradient(0deg, rgba(7,28,46,0.88), transparent);
  color: var(--color-white);
  padding: 32px 24px 22px;
}
.photo-banner figcaption strong { display: block; font-size: 1.15rem; margin-bottom: 4px; }
.photo-banner figcaption span { font-size: 0.92rem; color: var(--color-steel-200); }

/* ---------- Category showcase (homepage) ---------- */
.category-showcase { display: grid; grid-template-columns: repeat(5, 1fr); gap: 18px; }
.category-tile {
  position: relative;
  display: block;
  height: 300px;
  border-radius: var(--radius-md);
  overflow: hidden;
}
.category-tile img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 420ms ease;
}
.category-tile:hover img { transform: scale(1.07); }
.category-tile .tile-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(7,28,46,0.05) 40%, rgba(7,28,46,0.92) 100%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 20px;
}
.category-tile .tile-tag {
  align-self: flex-start;
  background: var(--color-amber-500);
  color: var(--color-navy-950);
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  margin-bottom: auto;
}
.category-tile h3 { color: var(--color-white); font-size: 1.2rem; margin-bottom: 4px; }
.category-tile p { color: var(--color-steel-200); font-size: 0.85rem; margin-bottom: 10px; }
.category-tile .tile-link {
  display: inline-flex; align-items: center; gap: 6px;
  color: var(--color-amber-400); font-weight: 700; font-size: 0.85rem;
}
.category-tile .tile-link svg { width: 16px; height: 16px; transition: transform 220ms ease; }
.category-tile:hover .tile-link svg { transform: translateX(4px); }

/* ---------- Stats strip ---------- */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  background: var(--color-navy-950);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stats-strip div { padding: 34px 20px; text-align: center; border-right: 1px solid rgba(255,255,255,0.08); }
.stats-strip div:last-child { border-right: none; }
.stats-strip strong { display: block; font-size: 2rem; color: var(--color-amber-400); }
.stats-strip span { font-size: 0.85rem; color: var(--color-steel-300); }

/* ---------- Timeline / process ---------- */
.process-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; counter-reset: step; }
.process-step { position: relative; padding: 30px 22px 22px; background: var(--color-white); border: 1px solid var(--color-steel-100); border-radius: var(--radius-md); }
.process-step::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: -18px; left: 22px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--color-amber-500);
  color: var(--color-navy-950);
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--color-navy-950), var(--color-navy-800));
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 30px;
  flex-wrap: wrap;
}
.cta-band h2 { color: var(--color-white); margin-bottom: 8px; }
.cta-band p { color: var(--color-steel-200); }

/* ---------- Forms ---------- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 7px; margin-bottom: 20px; }
.form-group.full { grid-column: 1 / -1; }
.form-group label { font-size: 0.88rem; font-weight: 600; color: var(--color-navy-800); }
.form-group label .req { color: var(--color-error); }
.form-group input, .form-group select, .form-group textarea {
  padding: 12px 14px;
  border: 1px solid var(--color-steel-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  color: var(--color-ink);
  background: var(--color-white);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none;
  border-color: var(--color-amber-500);
  box-shadow: 0 0 0 3px rgba(232,144,26,0.18);
}
.form-group textarea { resize: vertical; min-height: 130px; }
.hp-field { position: absolute; left: -9999px; opacity: 0; }

.form-note { font-size: 0.8rem; color: var(--color-steel-600); margin-top: 8px; }

.alert {
  padding: 16px 18px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  margin-bottom: 24px;
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.alert svg { width: 20px; height: 20px; flex-shrink: 0; margin-top: 2px; }
.alert-success { background: rgba(26,122,76,0.1); color: var(--color-success); border: 1px solid rgba(26,122,76,0.25); }
.alert-error { background: rgba(179,49,31,0.08); color: var(--color-error); border: 1px solid rgba(179,49,31,0.22); }

.contact-info-card {
  background: var(--color-navy-950);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px;
}
.contact-info-card h3 { color: var(--color-white); margin-bottom: 20px; }
.contact-info-row { display: flex; gap: 14px; margin-bottom: 22px; align-items: flex-start; }
.contact-info-row svg { width: 22px; height: 22px; color: var(--color-amber-400); flex-shrink: 0; margin-top: 2px; }
.contact-info-row strong { display: block; font-size: 0.85rem; color: var(--color-steel-300); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 3px; }
.contact-info-row a, .contact-info-row span { color: var(--color-white); font-size: 0.98rem; }
.map-frame { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--color-steel-100); margin-top: 30px; }
.map-frame iframe { width: 100%; height: 300px; border: 0; display: block; }

/* ---------- Accordion (FAQ) ---------- */
.accordion-item { border-bottom: 1px solid var(--color-steel-100); }
.accordion-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 4px;
  background: none;
  border: none;
  text-align: left;
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-navy-950);
}
.accordion-trigger svg { width: 20px; height: 20px; flex-shrink: 0; transition: transform var(--transition); color: var(--color-amber-600); }
.accordion-item.open .accordion-trigger svg { transform: rotate(45deg); }
.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 260ms ease;
}
.accordion-panel p { padding: 0 4px 20px; font-size: 0.95rem; }

/* ---------- Utility ---------- */
.mt-0 { margin-top: 0; }
.text-center { text-align: center; }
.muted { color: var(--color-steel-600); }
.divider { height: 1px; background: var(--color-steel-100); margin: 48px 0; }
.badge-strip { display: flex; flex-wrap: wrap; gap: 28px; align-items: center; justify-content: center; opacity: 0.85; }
.badge-strip span { font-weight: 700; font-size: 0.9rem; color: var(--color-steel-600); letter-spacing: 0.03em; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .category-showcase { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .hero-inner { grid-template-columns: 1fr; }
  .hero-visual { max-width: 380px; margin-inline: auto; }
  .product-visual { grid-template-columns: 1fr; }
  .product-diagram svg { max-width: 220px; }
  .product-detail { grid-template-columns: 1fr; }
  .product-sidebar { position: static; }
  .process-steps { grid-template-columns: repeat(2, 1fr); }
  .stats-strip { grid-template-columns: repeat(2, 1fr); }
  .stats-strip div:nth-child(2) { border-right: none; }
}

@media (max-width: 860px) {
  .main-nav, .header-actions .btn-outline-desktop { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-actions { gap: 10px; }
  .nav-backdrop { display: block; }

  .site-nav-drawer {
    display: block;
    position: fixed;
    top: 76px;
    right: 0;
    bottom: 0;
    width: 82%;
    max-width: 340px;
    background: var(--color-navy-950);
    padding: 20px;
    transform: translateX(100%);
    transition: transform 260ms ease;
    z-index: 490;
    overflow-y: auto;
    box-shadow: -12px 0 32px rgba(0,0,0,0.35);
  }
  .site-nav-drawer.open { transform: translateX(0); }
  .site-nav-drawer a {
    display: block;
    color: var(--color-white);
    font-weight: 600;
    padding: 16px 6px;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .site-nav-drawer .btn { margin-top: 20px; }

  .form-grid { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .pros-cons-grid { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 700px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .category-showcase { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .process-steps { grid-template-columns: 1fr; }
  .stats-strip { grid-template-columns: 1fr 1fr; }
  .cta-band { flex-direction: column; text-align: center; }
  .section { padding: 52px 0; }
  .hero { padding: 64px 0 56px; }
}

@media (max-width: 480px) {
  .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .category-showcase { grid-template-columns: 1fr; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
}