/* =========================================================
   Suraj Chemicals — Design System & Stylesheet
   ========================================================= */

:root {
  /* Brand palette */
  --color-primary: #84AC28;        /* brand green (logo) */
  --color-primary-strong: #627F1E; /* darker green — used for text/icons/solid buttons so contrast stays accessible */
  --color-primary-dark: #455915;   /* deep green — dark backgrounds (header bar, footer, hero) */
  --color-primary-light: #F6F8F1;  /* pale green tint — badges, icon tiles */
  --color-accent: #E8871E;         /* warm amber — secondary CTAs */
  --color-accent-dark: #C96F12;
  --color-ink: #1E2417;            /* near-black text, slight green cast */
  --color-body: #46503C;           /* body text */
  --color-muted: #737E68;
  --color-line: #E3E8D9;
  --color-surface: #FFFFFF;
  --color-bg: #F8FAF4;
  --color-bg-alt: #F1F5E8;
  --color-success: #1E8E5A;
  --color-warning: #D9822B;

  /* Type */
  --font-head: "Poppins", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;

  /* Layout */
  --max-width: 1180px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --shadow-sm: 0 2px 8px rgba(15, 46, 40, 0.06);
  --shadow-md: 0 12px 32px rgba(15, 46, 40, 0.10);
  --shadow-lg: 0 24px 60px rgba(15, 46, 40, 0.16);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-body);
  background: var(--color-bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4 {
  font-family: var(--font-head);
  color: var(--color-ink);
  line-height: 1.2;
  margin: 0 0 var(--space-2);
  font-weight: 600;
}
h1 { font-size: clamp(2.1rem, 4vw, 3.2rem); font-weight: 700; }
h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 var(--space-2); }
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}
section { padding: var(--space-6) 0; }
.section-tight { padding: var(--space-5) 0; }

/* ---------- Utility ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary-strong);
  background: var(--color-primary-light);
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  margin-bottom: var(--space-2);
}
.section-head { max-width: 680px; margin: 0 auto var(--space-5); text-align: center; }
.section-head p { color: var(--color-muted); font-size: 1.05rem; }
.text-center { text-align: center; }
.muted { color: var(--color-muted); }
.bg-alt { background: var(--color-bg-alt); }
.bg-primary { background: var(--color-primary-strong); color: #fff; }
.bg-primary h2, .bg-primary h3 { color: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, color 0.15s ease;
  white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-accent { background: var(--color-accent); color: #fff; box-shadow: var(--shadow-sm); }
.btn-accent:hover { background: var(--color-accent-dark); box-shadow: var(--shadow-md); }
.btn-primary { background: var(--color-primary-strong); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); box-shadow: var(--shadow-md); }
.btn-outline { border-color: rgba(255,255,255,0.6); color: #fff; }
.btn-outline:hover { background: rgba(255,255,255,0.12); }
.btn-ghost { border-color: var(--color-line); color: var(--color-ink); background: #fff; }
.btn-ghost:hover { border-color: var(--color-primary-strong); color: var(--color-primary-strong); }
.btn-sm { padding: 0.55rem 1.1rem; font-size: 0.85rem; }
.btn-block { width: 100%; }

/* ---------- Header / Nav ---------- */
.topbar {
  background: var(--color-primary-dark);
  color: #DFE6D0;
  font-size: 0.82rem;
}
.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  padding-top: 0.45rem;
  padding-bottom: 0.45rem;
  flex-wrap: wrap;
}
.topbar a { color: #F6FAED; }
.topbar-links { display: flex; gap: var(--space-3); flex-wrap: wrap; }
.topbar-links span, .topbar-links a { display: inline-flex; align-items: center; gap: 0.35rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-line);
}
.nav-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 0;
  gap: var(--space-3);
}
.brand { display: flex; align-items: center; gap: 0.65rem; font-family: var(--font-head); }
.brand-mark {
  width: 46px; height: 46px; border-radius: 11px;
  background: #fff;
  border: 1px solid var(--color-line);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  padding: 5px;
  overflow: hidden;
}
.brand-mark img { width: 100%; height: 100%; object-fit: contain; }
.site-footer .brand-mark { border-color: rgba(255,255,255,0.18); }
.brand-name { font-weight: 700; font-size: 1.18rem; color: var(--color-ink); line-height: 1.1; }
.brand-name small { display: block; font-weight: 500; font-size: 0.68rem; color: var(--color-muted); letter-spacing: 0.06em; text-transform: uppercase; }

.main-nav { display: flex; align-items: center; gap: var(--space-4); }
.main-nav ul { display: flex; gap: var(--space-3); }
.main-nav a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--color-body);
  padding: 0.4rem 0.1rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.main-nav a:hover, .main-nav a.active { color: var(--color-primary-strong); border-color: var(--color-accent); }
.nav-cta { display: flex; align-items: center; gap: var(--space-2); }
.nav-toggle {
  display: none;
  background: none; border: none; cursor: pointer;
  width: 40px; height: 40px; align-items: center; justify-content: center;
  border-radius: 8px;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block; width: 22px; height: 2px; background: var(--color-ink); position: relative; transition: 0.2s;
}
.nav-toggle span::before { position: absolute; top: -7px; width: 22px; height: 2px; background: var(--color-ink); }
.nav-toggle span::after { position: absolute; top: 7px; width: 22px; height: 2px; background: var(--color-ink); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background: radial-gradient(circle at 85% 15%, #B0D261 0%, var(--color-primary) 45%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-7) 0 var(--space-6);
}
.hero .hex-pattern {
  position: absolute; inset: 0; opacity: 0.12; pointer-events: none;
  background-image:
    linear-gradient(30deg, transparent 24%, rgba(255,255,255,.5) 25%, rgba(255,255,255,.5) 26%, transparent 27%, transparent 74%, rgba(255,255,255,.5) 75%, rgba(255,255,255,.5) 76%, transparent 77%),
    linear-gradient(150deg, transparent 24%, rgba(255,255,255,.5) 25%, rgba(255,255,255,.5) 26%, transparent 27%, transparent 74%, rgba(255,255,255,.5) 75%, rgba(255,255,255,.5) 76%, transparent 77%);
  background-size: 60px 104px;
}
.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-5);
  align-items: center;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(255,255,255,0.14); border: 1px solid rgba(255,255,255,0.25);
  padding: 0.4rem 0.9rem; border-radius: 999px; font-size: 0.82rem; font-weight: 600;
  margin-bottom: var(--space-3);
}
.hero h1 { color: #fff; margin-bottom: var(--space-3); }
.hero .lead { font-size: 1.15rem; color: #E6EBDA; max-width: 560px; margin-bottom: var(--space-4); }
.hero-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.hero-art {
  position: relative;
  aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
}
.hero-art svg { width: 100%; height: 100%; }

/* ---------- Stats ---------- */
.stats-bar { background: var(--color-primary-dark); color: #fff; }
.stats-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-3);
  padding: var(--space-4) 0;
}
.stat { text-align: center; }
.stat strong { display: block; font-family: var(--font-head); font-size: 1.9rem; color: #fff; }
.stat span { font-size: 0.85rem; color: #CFD7BB; }

/* ---------- Partners strip ---------- */
.partners-strip { padding: var(--space-4) 0; border-bottom: 1px solid var(--color-line); }
.partners-strip .label { text-align: center; font-size: 0.82rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-muted); margin-bottom: var(--space-3); font-weight: 700; }
.partners-row { display: flex; justify-content: center; align-items: center; gap: var(--space-5); flex-wrap: wrap; }
.partner-chip {
  font-family: var(--font-head); font-weight: 700; font-size: 1.05rem; color: var(--color-primary-dark);
  padding: 0.6rem 1.3rem; border: 1px solid var(--color-line); border-radius: var(--radius-sm); background: #fff;
}

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: var(--space-3); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-6 { grid-template-columns: repeat(6, 1fr); }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); }

.icon-tile {
  width: 52px; height: 52px; border-radius: var(--radius-sm);
  background: var(--color-primary-light); color: var(--color-primary-strong);
  display: flex; align-items: center; justify-content: center; margin-bottom: var(--space-2);
}
.icon-tile svg { width: 26px; height: 26px; }

.feature-card h3 { margin-bottom: 0.4rem; }
.feature-card p { color: var(--color-muted); font-size: 0.95rem; margin: 0; }

/* Category cards (home) */
.category-card {
  display: flex; flex-direction: column; height: 100%;
}
.category-card .count { color: var(--color-accent-dark); font-weight: 700; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.3rem; }
.category-card p { color: var(--color-muted); font-size: 0.93rem; flex-grow: 1; }
.category-card .go { margin-top: var(--space-2); font-weight: 600; color: var(--color-primary-strong); font-size: 0.92rem; display: inline-flex; align-items: center; gap: 0.3rem; }

/* Industries chips */
.chip-cloud { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
.chip {
  background: #fff; border: 1px solid var(--color-line); border-radius: 999px;
  padding: 0.55rem 1.1rem; font-size: 0.9rem; font-weight: 500; color: var(--color-body);
}

/* ---------- Product catalog ---------- */
.catalog-toolbar {
  display: flex; gap: var(--space-2); align-items: center; flex-wrap: wrap;
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-md);
  padding: var(--space-2); margin-bottom: var(--space-4); box-shadow: var(--shadow-sm);
  position: sticky; top: 78px; z-index: 40;
}
.search-input {
  flex: 1 1 240px; position: relative;
}
.search-input input {
  width: 100%; padding: 0.7rem 1rem 0.7rem 2.4rem; border-radius: 999px;
  border: 1px solid var(--color-line); font-size: 0.95rem; font-family: var(--font-body);
  background: var(--color-bg) url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="%23737E68" stroke-width="2"><circle cx="11" cy="11" r="7"/><line x1="21" y1="21" x2="16.65" y2="16.65"/></svg>') no-repeat 0.85rem center;
  background-size: 18px;
}
.search-input input:focus { outline: 2px solid var(--color-primary-strong); outline-offset: 1px; }
.filter-pills { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.filter-pill {
  border: 1px solid var(--color-line); background: #fff; border-radius: 999px;
  padding: 0.5rem 1rem; font-size: 0.85rem; font-weight: 600; cursor: pointer; color: var(--color-body);
  transition: all 0.15s ease;
}
.filter-pill:hover { border-color: var(--color-primary-strong); }
.filter-pill.active { background: var(--color-primary-strong); border-color: var(--color-primary-strong); color: #fff; }

.category-block { margin-bottom: var(--space-6); scroll-margin-top: 150px; }
.category-title { display: flex; align-items: baseline; gap: 0.6rem; margin-bottom: 0.3rem; }
.category-title h2 { margin: 0; }
.category-title .tag-count { color: var(--color-muted); font-size: 0.95rem; }
.category-desc { color: var(--color-muted); margin-bottom: var(--space-3); max-width: 720px; }

.product-card { display: flex; flex-direction: column; }
.product-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 0.5rem; margin-bottom: 0.5rem; }
.product-card h3 { margin: 0; font-size: 1.05rem; }
.brand-badge {
  font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em;
  background: var(--color-primary-light); color: var(--color-primary-strong); padding: 0.25rem 0.55rem; border-radius: 6px; white-space: nowrap;
}
.cas { font-size: 0.8rem; color: var(--color-muted); font-family: "SFMono-Regular", Consolas, monospace; margin-bottom: 0.5rem; }
.product-card p.desc { font-size: 0.92rem; color: var(--color-muted); flex-grow: 1; margin-bottom: var(--space-2); }
.product-actions { display: flex; gap: 0.5rem; }
.no-results { display: none; text-align: center; padding: var(--space-5) 0; color: var(--color-muted); }

/* ---------- Timeline / About ---------- */
.value-card { text-align: left; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); align-items: center; }
.split.reverse .split-media { order: 2; }
.media-panel {
  background: linear-gradient(160deg, var(--color-primary-light), #fff);
  border: 1px solid var(--color-line);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  display: flex; align-items: center; justify-content: center;
  min-height: 320px;
}
.stat-strip { display: flex; gap: var(--space-4); margin-top: var(--space-3); flex-wrap: wrap; }
.stat-strip .s { }
.stat-strip strong { display: block; font-family: var(--font-head); font-size: 1.6rem; color: var(--color-primary-strong); }
.stat-strip span { font-size: 0.85rem; color: var(--color-muted); }

/* ---------- Certifications ---------- */
.cert-card { display: flex; gap: var(--space-3); align-items: flex-start; }
.cert-card .icon-tile { flex-shrink: 0; }
.cert-card h3 { margin-bottom: 0.3rem; }
.cert-card p { color: var(--color-muted); margin: 0; font-size: 0.94rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary-strong));
  color: #fff; border-radius: var(--radius-lg);
  padding: var(--space-5); text-align: center;
  margin: 0 var(--space-3);
}
.cta-band h2 { color: #fff; }
.cta-band p { color: #E6EBDA; max-width: 560px; margin: 0 auto var(--space-3); }
.cta-actions { display: flex; gap: var(--space-2); justify-content: center; flex-wrap: wrap; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--space-5); align-items: start; }
.contact-card { display: flex; gap: var(--space-2); align-items: flex-start; padding: var(--space-2) 0; border-bottom: 1px solid var(--color-line); }
.contact-card:last-child { border-bottom: none; }
.contact-card h4 { margin: 0 0 0.2rem; font-size: 0.95rem; }
.contact-card p, .contact-card a { margin: 0; color: var(--color-muted); font-size: 0.93rem; }
.contact-card a:hover { color: var(--color-primary-strong); }

.form-panel { background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-md); padding: var(--space-4); box-shadow: var(--shadow-sm); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2); }
.field { margin-bottom: var(--space-2); }
.field label { display: block; font-size: 0.85rem; font-weight: 600; color: var(--color-ink); margin-bottom: 0.35rem; }
.field input, .field select, .field textarea {
  width: 100%; padding: 0.75rem 0.9rem; border: 1px solid var(--color-line); border-radius: var(--radius-sm);
  font-family: var(--font-body); font-size: 0.95rem; background: var(--color-bg);
}
.field input:focus, .field select:focus, .field textarea:focus { outline: 2px solid var(--color-primary-strong); outline-offset: 1px; background: #fff; }
.field textarea { resize: vertical; min-height: 110px; }
.form-note { font-size: 0.8rem; color: var(--color-muted); margin-top: var(--space-2); }
.form-status { display: none; padding: 0.85rem 1rem; border-radius: var(--radius-sm); font-size: 0.9rem; margin-bottom: var(--space-2); }
.form-status.show { display: block; }
.form-status.ok { background: #E6F6EC; color: var(--color-success); }
.form-status.err { background: #FDEDE4; color: #B3441B; }

.map-embed { border-radius: var(--radius-md); overflow: hidden; border: 1px solid var(--color-line); margin-top: var(--space-3); }
.map-embed iframe { width: 100%; height: 280px; border: 0; display: block; }

/* ---------- Floating WhatsApp ---------- */
.whatsapp-float {
  position: fixed; bottom: 22px; right: 22px; z-index: 200;
  width: 58px; height: 58px; border-radius: 50%;
  background: #25D366; display: flex; align-items: center; justify-content: center;
  box-shadow: 0 10px 28px rgba(0,0,0,0.25);
  transition: transform 0.15s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; }

/* ---------- Breadcrumb / page hero (inner pages) ---------- */
.page-hero {
  background: linear-gradient(120deg, var(--color-primary-dark), var(--color-primary-strong));
  color: #fff; padding: var(--space-6) 0 var(--space-5);
}
.page-hero .eyebrow { background: rgba(255,255,255,0.14); color: #fff; }
.page-hero h1 { color: #fff; margin-bottom: var(--space-1); }
.page-hero p { color: #E6EBDA; max-width: 620px; font-size: 1.05rem; }
.breadcrumb { font-size: 0.85rem; color: #CFD7BB; margin-bottom: var(--space-2); }
.breadcrumb a { color: #F0F3E7; }
.breadcrumb a:hover { text-decoration: underline; }

/* ---------- Footer ---------- */
.site-footer { background: var(--color-primary-dark); color: #DFE6D0; padding-top: var(--space-6); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: var(--space-4); padding-bottom: var(--space-5); }
.footer-brand .brand-name { color: #fff; }
.footer-brand p { color: #C2CCAB; font-size: 0.92rem; max-width: 300px; }
.site-footer h4 { color: #fff; font-family: var(--font-head); font-size: 0.95rem; margin-bottom: var(--space-2); }
.site-footer ul li { margin-bottom: 0.55rem; }
.site-footer a { color: #C2CCAB; font-size: 0.9rem; }
.site-footer a:hover { color: #fff; }
.social-row { display: flex; gap: 0.6rem; margin-top: var(--space-2); }
.social-row a {
  width: 36px; height: 36px; border-radius: 50%; background: rgba(255,255,255,0.1);
  display: flex; align-items: center; justify-content: center;
}
.social-row a:hover { background: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.12);
  padding: var(--space-2) 0; font-size: 0.82rem; color: #A9B391;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 0.5rem;
}

/* ---------- Product detail page ---------- */
.product-detail-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: var(--space-5);
  align-items: start;
}
.product-detail-main h2 { margin-top: var(--space-5); }
.product-detail-main h2:first-child { margin-top: 0; }

.spec-table-wrap {
  border: 1px solid var(--color-line);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}
.spec-table { width: 100%; border-collapse: collapse; font-size: 0.93rem; }
.spec-table caption {
  text-align: left; background: var(--color-primary-strong); color: #fff;
  font-family: var(--font-head); font-weight: 600; padding: 0.85rem 1.1rem; font-size: 1rem;
}
.spec-table thead th {
  background: var(--color-primary-light); color: var(--color-primary-strong);
  text-transform: uppercase; letter-spacing: 0.04em; font-size: 0.75rem; font-weight: 700;
  text-align: left; padding: 0.7rem 1.1rem;
}
.spec-table tbody td { padding: 0.7rem 1.1rem; border-top: 1px solid var(--color-line); }
.spec-table tbody tr:nth-child(even) { background: var(--color-bg); }
.spec-table tbody td:first-child { font-weight: 600; color: var(--color-ink); width: 46%; }
.spec-table tbody td:last-child { color: var(--color-body); }
.spec-note { font-size: 0.82rem; color: var(--color-muted); margin-top: var(--space-2); }

.applications-list li {
  display: flex; gap: 0.6rem; align-items: flex-start; margin-bottom: 0.6rem; font-size: 0.95rem; color: var(--color-body);
}
.applications-list li::before {
  content: "✓"; color: var(--color-primary-strong); font-weight: 700; flex-shrink: 0;
  width: 22px; height: 22px; border-radius: 50%; background: var(--color-primary-light);
  display: flex; align-items: center; justify-content: center; font-size: 0.75rem; margin-top: 0.05rem;
}

.product-sidebar {
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-md);
  padding: var(--space-3); box-shadow: var(--shadow-sm); position: sticky; top: 96px;
}
.product-photo {
  background: #fff; border: 1px solid var(--color-line); border-radius: var(--radius-sm);
  overflow: hidden; margin-bottom: var(--space-2); aspect-ratio: 1 / 1;
  display: flex; align-items: center; justify-content: center;
}
.product-photo img { width: 100%; height: 100%; object-fit: contain; display: block; }
.product-photo-caption {
  font-size: 0.72rem; color: var(--color-muted); text-align: center;
  margin: 0 0 var(--space-3); padding-bottom: var(--space-2); border-bottom: 1px solid var(--color-line);
}
.product-sidebar h4 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-muted); margin-bottom: 0.3rem; }
.product-sidebar .fact { margin-bottom: var(--space-2); padding-bottom: var(--space-2); border-bottom: 1px solid var(--color-line); }
.product-sidebar .fact:last-of-type { border-bottom: none; padding-bottom: 0; }
.product-sidebar .fact p { margin: 0; font-size: 0.95rem; color: var(--color-ink); font-weight: 500; }
.product-sidebar .btn { margin-top: var(--space-2); }

.related-products { margin-top: var(--space-6); }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-art { max-width: 360px; margin: 0 auto; }
  .stats-grid { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-6 { grid-template-columns: repeat(3, 1fr); }
  .split { grid-template-columns: 1fr; }
  .split.reverse .split-media { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .product-detail-grid { grid-template-columns: 1fr; }
  .product-sidebar { position: static; }
}
@media (max-width: 760px) {
  .main-nav ul, .nav-cta .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
  .main-nav.open ul {
    display: flex; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--color-line); padding: var(--space-2) var(--space-3); gap: var(--space-2);
  }
  .topbar-links span:nth-child(3) { display: none; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .grid-4, .grid-3, .grid-2, .grid-6 { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .catalog-toolbar { position: static; }
}
@media (max-width: 480px) {
  .grid-4, .grid-3, .grid-2, .grid-6 { grid-template-columns: 1fr; }
  .cta-band { margin: 0; border-radius: 0; }
  .spec-table-wrap { overflow-x: auto; }
  .spec-table { min-width: 480px; }
}

/* ---------- Mega nav dropdowns ---------- */
.main-nav li.has-dropdown { position: relative; }
.main-nav li.has-dropdown > a { display: inline-flex; align-items: center; gap: 0.3rem; }
.main-nav li.has-dropdown > a::after {
  content: "";
  width: 6px; height: 6px;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg);
  margin-top: -3px;
  opacity: 0.6;
}
.main-nav .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.5rem;
  background: #fff;
  border: 1px solid var(--color-line);
  border-radius: var(--radius-sm);
  box-shadow: 0 16px 32px rgba(20, 30, 10, 0.14);
  padding: 0.5rem;
  min-width: 250px;
  flex-direction: column;
  gap: 0;
  z-index: 200;
}
.main-nav li.has-dropdown:hover > .dropdown,
.main-nav li.has-dropdown:focus-within > .dropdown {
  display: flex;
}
.main-nav .dropdown li { width: 100%; }
.main-nav .dropdown a {
  display: block;
  padding: 0.55rem 0.75rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-body);
  border-bottom: none;
  white-space: nowrap;
}
.main-nav .dropdown a:hover, .main-nav .dropdown a:focus {
  background: var(--color-bg-alt, #F3F6EC);
  color: var(--color-primary-strong);
}

@media (max-width: 760px) {
  .main-nav li.has-dropdown > a::after { display: none; }
  .main-nav.open .dropdown,
  .main-nav .dropdown {
    display: flex !important;
    position: static !important;
    top: auto !important;
    left: auto !important;
    right: auto !important;
    margin: 0.25rem 0 0.4rem 0.6rem !important;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--color-line);
    padding: 0 0 0 0.5rem;
    min-width: 0;
  }
  .main-nav .dropdown a { padding: 0.4rem 0.5rem; font-size: 0.88rem; color: var(--color-muted); }
  .main-nav.open ul { align-items: stretch; }
}
@media (max-width: 430px) {
  .nav-row { flex-wrap: nowrap; gap: 0.4rem; }
  .brand-name small { display: none; }
  .brand-mark { width: 38px; height: 38px; border-radius: 9px; }
  .brand-name { font-size: 1rem; }
  .nav-cta { gap: 0.4rem; }
  .nav-cta .btn-accent.btn-sm { padding: 0.5rem 0.65rem; font-size: 0.76rem; white-space: nowrap; }
  .nav-toggle { width: 34px; height: 34px; flex-shrink: 0; }
}

/* ---------- Client logo carousel (slideshow) ---------- */
.logo-carousel {
  position: relative;
  max-width: 640px;
  margin: 0 auto;
}
.logo-carousel-viewport {
  overflow: hidden;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-line);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.logo-carousel-track {
  display: flex;
  transition: transform 0.5s ease;
}
.logo-slide {
  flex: 0 0 100%;
  width: 100%;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.logo-slide img { width: 100%; height: auto; display: block; }
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-line);
  background: #fff;
  color: var(--color-primary-strong);
  font-size: 1.4rem;
  line-height: 1;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  display: flex; align-items: center; justify-content: center;
}
.carousel-arrow:hover { background: var(--color-bg-alt, #F3F6EC); }
.carousel-arrow.prev { left: -20px; }
.carousel-arrow.next { right: -20px; }
.logo-carousel-dots {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: var(--space-3);
}
.logo-carousel-dots button {
  width: 8px; height: 8px;
  border-radius: 50%;
  border: none;
  background: var(--color-line);
  padding: 0;
  cursor: pointer;
}
.logo-carousel-dots button.active { background: var(--color-accent); width: 20px; border-radius: 4px; }
@media (max-width: 600px) {
  .carousel-arrow { display: none; }
}