:root {
  --bg: #080c14;
  --bg2: #0d1520;
  --bg3: #111d2e;
  --surface: #162235;
  --surface2: #1c2d42;
  --border: #1e3a56;
  --blue: #1a7fc4;
  --blue-light: #3da0e8;
  --blue-glow: #1a7fc466;
  --amber: #e8a020;
  --amber-light: #f5c04a;
  --steel: #a8bdd0;
  --steel-dim: #637d96;
  --white: #eef3f8;
  --text: #c8d8e8;
  --text-dim: #7a95ae;
  --green: #2ec97e;
  --red: #e05050;
  --nav-h: 150px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Barlow', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── TOPBAR ─────────────────────────────────────────── */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--nav-h);
  background: #000000;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  display: flex; align-items: center;
  padding: 0 28px;
}
.nav-brand {
  display: flex; align-items: center; gap: 0;
  text-decoration: none;
}
.nav-logo-mark {
  display: none;
}
.nav-logo-img {
  height: 140px;
  width: auto;
  border-radius: 4px;
  object-fit: contain;
}
.nav-name {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700; font-size: 22px; color: var(--white);
  letter-spacing: 0.04em;
}
.nav-name span { color: var(--blue-light); }
.nav-sub {
  font-family: 'Barlow', sans-serif;
  font-size: 10px; color: var(--steel-dim);
  letter-spacing: 0.12em; text-transform: uppercase;
  margin-top: 1px;
}
.nav-links {
  display: flex; gap: 0; list-style: none;
  flex: 1;
  justify-content: space-evenly;
  margin-left: 24px;
}
.nav-links a {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 500; font-size: 13px;
  color: var(--steel); text-decoration: none;
  padding: 7px 11px; border-radius: 4px;
  letter-spacing: 0.04em; text-transform: uppercase;
  transition: all 0.2s;
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--blue-light);
  background: var(--blue-glow);
  border-color: var(--border);
}
.nav-cta {
  background: var(--blue) !important;
  color: #fff !important;
  border-color: var(--blue) !important;
}
.nav-cta:hover {
  background: var(--blue-light) !important;
  border-color: var(--blue-light) !important;
}
.hamburger { display: none; cursor: pointer; flex-direction: column; gap: 5px; }
.hamburger span { width: 24px; height: 2px; background: var(--steel); transition: all 0.3s; display: block; }

/* ── PAGES ──────────────────────────────────────────── */
.page { display: block; min-height: 100vh; padding-top: var(--nav-h); }

/* ── HERO ───────────────────────────────────────────── */
.hero {
  position: relative; overflow: hidden;
  min-height: calc(100vh - var(--nav-h));
  display: flex; align-items: center;
  padding: 80px 40px 60px;
}
.hero-bg {
  position: absolute; inset: 0;
  background: 
    radial-gradient(ellipse 80% 60% at 70% 50%, #0c2a4a 0%, transparent 70%),
    radial-gradient(ellipse 60% 80% at 20% 30%, #091a2e 0%, transparent 60%),
    var(--bg);
}
.hero-grid {
  position: absolute; inset: 0; overflow: hidden; opacity: 0.03;
  background-image:
    linear-gradient(var(--blue-light) 1px, transparent 1px),
    linear-gradient(90deg, var(--blue-light) 1px, transparent 1px);
  background-size: 60px 60px;
}
.hero-pipes {
  position: absolute; right: 0; top: 0; bottom: 0; width: 55%;
  opacity: 0.15;
}
.hero-content {
  position: relative; z-index: 2;
  max-width: 600px;
}
.hero-tag {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px; font-weight: 700;
  color: #f5c04a; letter-spacing: 0.15em; text-transform: uppercase;
  background: rgba(0,0,0,0.45);
  border: 1px solid rgba(245,192,74,0.6);
  padding: 5px 14px; border-radius: 2px;
  margin-bottom: 24px;
  backdrop-filter: blur(4px);
}
.hero-tag::before { content: ''; width: 6px; height: 6px; background: var(--amber); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }
.hero-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700; line-height: 1.1;
  color: #ffffff; margin-bottom: 16px;
  letter-spacing: -0.01em;
  text-shadow: 0 2px 12px rgba(0,0,0,0.7), 0 0 40px rgba(0,0,0,0.4);
}
.hero-title .accent { color: var(--blue-light); }
.hero-desc {
  font-size: 18px; line-height: 1.75;
  color: #e8f0f8;
  margin-bottom: 40px;
  max-width: 520px;
  text-shadow: 0 1px 6px rgba(0,0,0,0.65);
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 56px; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--blue); color: #fff;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 14px 28px; border-radius: 3px;
  text-decoration: none; border: none; cursor: pointer;
  transition: all 0.2s;
}
.btn-primary:hover { background: var(--blue-light); transform: translateY(-1px); }
.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--white);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase;
  padding: 13px 28px; border-radius: 3px;
  text-decoration: none; border: 1px solid var(--border);
  cursor: pointer; transition: all 0.2s;
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue-light); background: var(--blue-glow); }
.hero-stats {
  display: flex; gap: 0; flex-wrap: wrap;
  background: rgba(0,0,0,0.55);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 6px;
  padding: 14px 20px;
  gap: 32px;
}
.stat {
  border-left: 2px solid var(--blue);
  padding-left: 14px;
}
.stat-val {
  font-family: 'Rajdhani', sans-serif;
  font-size: 26px; font-weight: 700; color: #ffffff;
  line-height: 1;
  text-shadow: 0 1px 6px rgba(0,0,0,0.8);
}
.stat-label {
  font-size: 11px; color: #c8d8e8;
  letter-spacing: 0.08em; text-transform: uppercase; margin-top: 4px;
  text-shadow: 0 1px 4px rgba(0,0,0,0.9);
  font-weight: 600;
}
.hero-visual {
  position: absolute; right: 40px; top: 50%; transform: translateY(-50%);
  width: 45%; max-width: 600px;
}
.hero-visual img {
  width: 100%; border-radius: 6px;
  border: 1px solid var(--border);
  box-shadow: 0 0 60px rgba(26,127,196,0.2), 0 20px 60px rgba(0,0,0,0.5);
}

/* ── PRODUCTS STRIP ──────────────────────────────────── */
.products-strip {
  background: var(--bg2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 40px;
  display: flex; gap: 0; overflow-x: auto;
}
.pstrip-item {
  flex: 1; min-width: 160px;
  display: flex; flex-direction: column; align-items: center;
  padding: 16px 20px;
  border-right: 1px solid var(--border);
  cursor: pointer; transition: all 0.2s;
  text-decoration: none;
}
.pstrip-item:last-child { border-right: none; }
.pstrip-item:hover { background: var(--surface); }
.pstrip-icon {
  width: 36px; height: 36px; margin-bottom: 10px;
  color: var(--blue-light);
}
.pstrip-name {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; font-size: 13px;
  color: var(--white); text-align: center;
  letter-spacing: 0.06em; text-transform: uppercase;
}
.pstrip-range {
  font-size: 11px; color: var(--text-dim); text-align: center; margin-top: 4px;
}

/* ── SECTIONS ────────────────────────────────────────── */
section { padding: 80px 40px; }
section.dark { background: var(--bg2); }
section.surface { background: var(--bg3); }

.section-label {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px; font-weight: 600;
  color: var(--blue-light); letter-spacing: 0.15em; text-transform: uppercase;
  margin-bottom: 12px;
}
.section-label::before { content: ''; width: 20px; height: 1px; background: var(--blue-light); }

h2.section-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 700; color: var(--white);
  margin-bottom: 16px; line-height: 1.1;
}
h2.section-title span { color: var(--blue-light); }
.section-lead {
  font-size: 16px; line-height: 1.75;
  color: var(--text-dim); max-width: 700px;
  margin-bottom: 48px;
}

/* ── PRODUCT CARDS ───────────────────────────────────── */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px; margin-bottom: 48px;
}
.product-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px; overflow: hidden;
  transition: all 0.3s;
  cursor: pointer;
}
.product-card:hover {
  border-color: var(--blue);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(26,127,196,0.2);
}
.product-card-img {
  width: 100%; aspect-ratio: 16/9;
  object-fit: cover; object-position: center;
  background: var(--bg3);
  display: block;
}
.product-card-body { padding: 24px; }
.product-card-stage {
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px; font-weight: 600;
  color: var(--amber); letter-spacing: 0.15em; text-transform: uppercase;
  margin-bottom: 8px;
}
.product-card-name {
  font-family: 'Rajdhani', sans-serif;
  font-size: 20px; font-weight: 700;
  color: var(--white); margin-bottom: 8px;
}
.product-card-range {
  display: inline-block;
  background: var(--blue-glow);
  border: 1px solid var(--blue);
  color: var(--blue-light);
  font-family: 'Rajdhani', sans-serif;
  font-size: 12px; font-weight: 600;
  padding: 3px 10px; border-radius: 2px;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}
.product-card-desc {
  font-size: 14px; line-height: 1.65;
  color: var(--text-dim);
}

/* ── DETAIL PANELS ────────────────────────────────────── */
.detail-panel {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: start;
  margin-bottom: 80px;
}
.detail-panel.reverse { direction: rtl; }
.detail-panel.reverse > * { direction: ltr; }
.detail-img-wrap {
  position: relative;
}
.detail-img {
  width: 100%; border-radius: 6px;
  border: 1px solid var(--border);
  box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}
.detail-img-badge {
  position: absolute; bottom: -1px; left: -1px;
  background: var(--blue);
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px; font-weight: 700;
  color: #fff; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 5px 14px;
}
.detail-content h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 28px; font-weight: 700;
  color: var(--white); margin-bottom: 8px;
}
.detail-content .vacuum-range {
  display: inline-flex; align-items: center; gap: 8px;
  background: rgba(232,160,32,0.1);
  border: 1px solid rgba(232,160,32,0.3);
  color: var(--amber);
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px; font-weight: 600;
  padding: 5px 14px; border-radius: 2px;
  margin-bottom: 16px; letter-spacing: 0.06em;
}
.detail-content p {
  font-size: 15px; line-height: 1.75;
  color: var(--text-dim); margin-bottom: 20px;
}
.app-list {
  list-style: none; display: flex; flex-direction: column; gap: 8px;
}
.app-list li {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 14px; color: var(--text);
  line-height: 1.5;
}
.app-list li::before {
  content: '›';
  color: var(--blue-light); font-size: 18px;
  line-height: 1.2; flex-shrink: 0;
}

/* ── FEATURE SPECS ─────────────────────────────────── */
.spec-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px; margin: 32px 0;
}
.spec-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 20px;
  transition: border-color 0.2s;
}
.spec-card:hover { border-color: var(--blue); }
.spec-icon {
  width: 32px; height: 32px;
  background: var(--blue-glow);
  border-radius: 4px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 12px;
  color: var(--blue-light);
}
.spec-label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px; font-weight: 600;
  color: var(--steel); letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 4px;
}
.spec-value {
  font-family: 'Rajdhani', sans-serif;
  font-size: 20px; font-weight: 700; color: var(--white);
}

/* ── COMPARISON TABLE ──────────────────────────────── */
.comp-table-wrap { overflow-x: auto; }
.comp-table {
  width: 100%; border-collapse: collapse;
  font-size: 14px;
}
.comp-table th {
  background: var(--surface);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; font-size: 13px;
  color: var(--white); letter-spacing: 0.06em; text-transform: uppercase;
  padding: 14px 20px;
  border: 1px solid var(--border);
  text-align: left;
}
.comp-table th.highlight { background: var(--blue); }
.comp-table td {
  padding: 12px 20px;
  border: 1px solid var(--border);
  color: var(--text-dim); vertical-align: top;
  line-height: 1.5;
}
.comp-table tr:hover td { background: var(--surface); }
.comp-table td:first-child {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; color: var(--steel);
  font-size: 13px; letter-spacing: 0.04em;
}

/* ── TRACK RECORD ──────────────────────────────────── */
.track-table-wrap { overflow-x: auto; }
.track-table {
  width: 100%; border-collapse: collapse;
  font-size: 14px;
}
.track-table th {
  background: var(--surface2);
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; font-size: 13px;
  color: var(--blue-light); letter-spacing: 0.08em; text-transform: uppercase;
  padding: 14px 24px;
  border-bottom: 2px solid var(--blue);
  text-align: left;
}
.track-table td {
  padding: 12px 24px;
  border-bottom: 1px solid var(--border);
  color: var(--text); font-size: 14px;
}
.track-table tr:hover td { background: var(--surface); }
.track-table .sno {
  color: var(--text-dim); font-size: 12px;
  font-family: 'Rajdhani', sans-serif;
}
.client-name { color: var(--white); font-weight: 500; }
.location-tag {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 2px; padding: 2px 8px;
  font-size: 12px; font-family: 'Rajdhani', sans-serif;
  font-weight: 600; letter-spacing: 0.06em;
}
.loc-india { color: var(--green); }
.loc-intl { color: var(--amber); }
.year-badge {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; color: var(--blue-light);
}

/* ── DSI / SKID SECTION ───────────────────────────── */
.dsi-features {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px; margin: 32px 0;
}
.dsi-feature {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--blue);
  border-radius: 4px; padding: 20px;
  transition: all 0.2s;
}
.dsi-feature:hover {
  border-left-color: var(--amber);
  background: var(--surface2);
}
.dsi-feature-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 15px; font-weight: 700;
  color: var(--white); margin-bottom: 6px;
}
.dsi-feature-text {
  font-size: 13px; line-height: 1.65;
  color: var(--text-dim);
}

/* ── ABOUT ─────────────────────────────────────────── */
.about-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 60px; align-items: start;
}
.about-text p {
  font-size: 15px; line-height: 1.8;
  color: var(--text-dim); margin-bottom: 20px;
}
.cert-badge {
  display: inline-flex; align-items: center; gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 12px 20px;
  margin-bottom: 24px;
}
.cert-badge svg { color: var(--green); }
.cert-text { font-family: 'Rajdhani', sans-serif; font-weight: 600; color: var(--white); }
.cert-sub { font-size: 12px; color: var(--text-dim); }
.address-block {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 20px;
  margin-top: 24px;
}
.address-block h4 {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700; color: var(--blue-light);
  font-size: 14px; letter-spacing: 0.08em; text-transform: uppercase;
  margin-bottom: 8px;
}
.address-block p {
  font-size: 14px; color: var(--text-dim); line-height: 1.7; margin-bottom: 0;
}
.rd-images {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.rd-images img {
  width: 100%; aspect-ratio: 4/3;
  object-fit: cover; border-radius: 4px;
  border: 1px solid var(--border);
}
.rd-images img:first-child {
  grid-column: 1 / -1;
}

/* ── INDUSTRIES STRIP ─────────────────────────────── */
.industries {
  display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px;
}
.industry-chip {
  display: flex; align-items: center; gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px; padding: 8px 16px;
  font-size: 13px; color: var(--text);
  transition: all 0.2s; cursor: default;
}
.industry-chip:hover {
  border-color: var(--blue); color: var(--blue-light);
  background: var(--blue-glow);
}
.industry-chip::before { content: '⬥'; font-size: 8px; color: var(--blue-light); }

/* ── ENQUIRY FORM ─────────────────────────────────── */
.enquiry-form {
  max-width: 700px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px; padding: 40px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 20px; }
.form-group label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 12px; font-weight: 600;
  color: var(--steel); letter-spacing: 0.1em; text-transform: uppercase;
}
.form-group input, .form-group select, .form-group textarea {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px; padding: 12px 16px;
  color: var(--white); font-family: 'Barlow', sans-serif; font-size: 14px;
  transition: border-color 0.2s;
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--blue);
}
.form-group textarea { resize: vertical; min-height: 100px; }
.form-group select option { background: var(--bg2); }

/* ── FOOTER ───────────────────────────────────────── */
footer {
  background: #000000;
  border-top: 1px solid var(--border);
  padding: 48px 40px 32px;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: 48px; margin-bottom: 40px;
}
.footer-brand h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 24px; font-weight: 700; color: var(--white); margin-bottom: 8px;
}
.footer-brand p {
  font-size: 14px; color: var(--text-dim); line-height: 1.7; max-width: 340px;
}
.footer-col h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px; font-weight: 700;
  color: var(--blue-light); letter-spacing: 0.1em; text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-col a {
  display: block; color: var(--text-dim); text-decoration: none;
  font-size: 14px; padding: 4px 0; transition: color 0.2s; cursor: pointer;
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 12px; color: var(--text-dim);
  flex-wrap: wrap; gap: 12px;
}
.iso-badge {
  display: inline-flex; align-items: center; gap: 6px;
  background: rgba(46,201,126,0.1);
  border: 1px solid rgba(46,201,126,0.3);
  color: var(--green);
  font-family: 'Rajdhani', sans-serif; font-weight: 600;
  font-size: 11px; letter-spacing: 0.1em;
  padding: 4px 12px; border-radius: 2px;
}
.footer-social {
  display: flex; gap: 10px; margin-top: 20px;
}
.footer-social a {
  display: flex; align-items: center; justify-content: center;
  width: 38px; height: 38px; border-radius: 50%;
  background: rgba(255,255,255,0.06);
  border: 1px solid var(--border);
  color: var(--text-dim);
  transition: all 0.2s;
}
.footer-social a svg { width: 18px; height: 18px; fill: currentColor; }
.footer-social a:hover {
  color: var(--white);
  border-color: var(--blue);
  background: var(--blue-glow);
  transform: translateY(-2px);
}
.footer-social a.whatsapp:hover { color: #25D366; border-color: #25D366; }
.footer-social a.linkedin:hover { color: #0A66C2; border-color: #0A66C2; }

/* ── PAGE HEADER ──────────────────────────────────── */
.page-header {
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  padding: 48px 40px 40px;
}
.page-header h2 {
  font-family: 'Rajdhani', sans-serif;
  font-size: clamp(40px, 5vw, 64px);
  font-weight: 700; color: var(--white); line-height: 1.1;
  margin-bottom: 16px;
}
.page-header p {
  font-size: 18px; color: var(--text-dim);
  max-width: 700px; line-height: 1.75;
}

/* ── TABS ─────────────────────────────────────────── */
.tabs {
  display: flex; gap: 0; border-bottom: 1px solid var(--border);
  margin-bottom: 48px; overflow-x: auto;
}
.tab-btn {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 600; font-size: 13px;
  color: var(--text-dim); letter-spacing: 0.08em; text-transform: uppercase;
  padding: 14px 24px; border: none; background: none;
  border-bottom: 2px solid transparent;
  cursor: pointer; transition: all 0.2s;
  white-space: nowrap;
}
.tab-btn:hover { color: var(--white); }
.tab-btn.active { color: var(--blue-light); border-bottom-color: var(--blue-light); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ── STEAM VISUALIZER ─────────────────────────────── */
.stage-selector {
  display: flex; gap: 12px; margin-bottom: 40px; flex-wrap: wrap;
}
.stage-btn {
  display: flex; flex-direction: column; align-items: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px; padding: 16px 20px;
  cursor: pointer; transition: all 0.2s;
  min-width: 120px;
}
.stage-btn:hover { border-color: var(--blue); }
.stage-btn.active {
  border-color: var(--blue);
  background: var(--blue-glow);
}
.stage-btn-num {
  font-family: 'Rajdhani', sans-serif;
  font-size: 28px; font-weight: 700; color: var(--blue-light);
  line-height: 1;
}
.stage-btn-label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 10px; font-weight: 600;
  color: var(--steel-dim); letter-spacing: 0.1em; text-transform: uppercase;
  margin-top: 4px;
}
.stage-btn-range {
  font-size: 11px; color: var(--amber);
  margin-top: 4px;
}

/* ── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 900px) {
  nav { padding: 0 20px; }
  .nav-links { display: none; }
  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed; top: var(--nav-h); left: 0; right: 0;
    background: #000000; border-bottom: 1px solid var(--border);
    padding: 16px; gap: 4px; z-index: 999;
    max-height: calc(100vh - var(--nav-h));
    overflow-y: auto;
  }
  .hamburger { display: flex; }
  /* Mobile dropdown: shown as flat indented list when toggled */
  .nav-dropdown { flex-direction: column; align-items: stretch; }
  .nav-dropdown > a { width: 100%; }
  .nav-dropdown-menu {
    display: none !important;
  }
  .nav-dropdown-menu.mobile-open {
    display: flex !important;
    position: static !important;
    transform: none !important;
    width: 100% !important;
    flex-direction: column !important;
    gap: 0 !important;
    background: #111 !important;
    border: 1px solid var(--border) !important;
    border-radius: 4px !important;
    padding: 8px !important;
    margin-top: 4px !important;
    box-shadow: none !important;
  }
  .nav-dropdown-menu.mobile-open .nav-dropdown-col {
    flex: none !important;
    width: 100% !important;
  }
  .nav-dropdown-menu.mobile-open .nav-dropdown-col + .nav-dropdown-col {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
  }
  .hero { padding: 48px 20px 40px; flex-direction: column; }
  .hero-visual { position: static; width: 100%; max-width: 100%; transform: none; margin-top: 32px; }
  .detail-panel { grid-template-columns: 1fr; gap: 32px; }
  .detail-panel.reverse { direction: ltr; }
  .about-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  section { padding: 48px 20px; }
  .page-header { padding: 32px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .hero-title { font-size: 36px; }
}

@media (max-width: 600px) {
  .hero-stats { gap: 24px; }
  .product-grid { grid-template-columns: 1fr; }
  .rd-images { grid-template-columns: 1fr; }
  .rd-images img:first-child { grid-column: 1; }
  .stage-selector { gap: 8px; }
  .stage-btn { min-width: 90px; padding: 12px; }
}

/* ── SCROLL ANIMATION ──────────────────────────────── */
.reveal {
  opacity: 0; transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* ── HERO SLIDESHOW ────────────────────────────────── */
.hero-slideshow {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: flex; flex-direction: column;
  justify-content: center;
  padding: 0;
  overflow: hidden;
}
.hero-slides-bg {
  position: absolute; inset: 0;
}
.hero-slide {
  position: absolute; inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-slide-img {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.04);
  transition: transform 6s ease;
}
.hero-slide.active .hero-slide-img {
  transform: scale(1);
}
.hero-slide-overlay {
  position: absolute; inset: 0;
  background: rgba(8,12,20,0.38);
}
.hero-content-wrap {
  position: relative; z-index: 2;
  padding: 72px 60px 40px;
  max-width: 680px;
}
.hero-content-slides { position: relative; min-height: 260px; }
.hero-content-slide {
  position: absolute; top: 0; left: 0;
  opacity: 0; transform: translateY(18px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  pointer-events: none;
  width: 100%;
}
.hero-content-slide.active {
  opacity: 1; transform: translateY(0);
  pointer-events: auto;
  position: relative;
}
/* slide controls */
.slide-controls {
  position: absolute;
  bottom: 80px; left: 60px;
  z-index: 3;
  display: flex; align-items: center; gap: 16px;
}
.slide-dots { display: flex; gap: 8px; }
.slide-dot {
  width: 28px; height: 3px;
  background: rgba(255,255,255,0.3);
  border: none; border-radius: 2px;
  cursor: pointer; padding: 0;
  transition: all 0.3s;
}
.slide-dot.active {
  background: var(--blue-light);
  width: 48px;
}
.slide-arrow {
  width: 36px; height: 36px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  color: #fff; cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: all 0.2s;
}
.slide-arrow:hover {
  background: var(--blue);
  border-color: var(--blue);
}
/* progress bar */
.slide-progress {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 3px; background: rgba(255,255,255,0.1); z-index: 3;
}
.slide-progress-bar {
  height: 100%; background: var(--blue-light);
  width: 0%; transition: width linear;
}
/* hero stats always at bottom of content wrap */
.hero-slideshow .hero-stats {
  position: relative; margin-top: 40px;
  display: flex; gap: 40px; flex-wrap: wrap;
}
@media (max-width: 900px) {
  .hero-content-wrap { padding: 48px 24px 32px; max-width: 100%; }
  .slide-controls { left: 24px; bottom: 60px; }
  .hero-slideshow .hero-stats { gap: 20px; }
}


/* ── CERTIFICATE GRID ──────────────────────────────── */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}
.cert-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.3s;
}
.cert-card:hover {
  border-color: var(--blue);
  box-shadow: 0 8px 32px rgba(26,127,196,0.2);
  transform: translateY(-3px);
}
.cert-card-header {
  padding: 16px 20px 14px;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
}
.cert-card-company {
  font-family: 'Rajdhani', sans-serif;
  font-weight: 700; font-size: 15px;
  color: var(--white); margin-bottom: 4px;
}
.cert-card-meta {
  font-size: 12px; color: var(--text-dim);
  letter-spacing: 0.02em;
}
.cert-img {
  width: 100%;
  display: block;
  cursor: zoom-in;
  transition: opacity 0.2s;
  max-height: 340px;
  object-fit: cover;
  object-position: top;
}
.cert-img:hover { opacity: 0.88; }
.cert-card-footer {
  padding: 8px 20px;
  font-size: 11px; color: var(--steel-dim);
  text-align: center;
  letter-spacing: 0.08em; text-transform: uppercase;
}
/* ── LIGHTBOX ──────────────────────────────────────── */
.cert-lightbox {
  display: none;
  position: fixed; inset: 0; z-index: 9000;
  background: rgba(0,0,0,0.88);
  align-items: center; justify-content: center;
  padding: 32px;
}
.cert-lightbox.open { display: flex; }
.cert-lightbox-inner {
  position: relative;
  max-width: 860px; width: 100%;
  display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.cert-lightbox-inner img {
  width: 100%; border-radius: 6px;
  box-shadow: 0 20px 80px rgba(0,0,0,0.6);
  max-height: 85vh; object-fit: contain;
}
.cert-close {
  background: var(--blue); color: #fff;
  border: none; border-radius: 4px;
  padding: 10px 28px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 14px; font-weight: 600;
  letter-spacing: 0.08em; cursor: pointer;
  transition: background 0.2s;
}
.cert-close:hover { background: var(--blue-light); }
@media (max-width: 700px) {
  .cert-grid { grid-template-columns: 1fr; }
}


/* ── APPLICATION PAGES ─────────────────────────────── */
.app-industry-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px; margin-bottom: 48px;
}
.app-industry-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--blue);
  border-radius: 6px; padding: 28px 24px;
  cursor: pointer; transition: all 0.25s;
  text-decoration: none; display: block;
}
.app-industry-card:hover {
  border-top-color: var(--amber);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(26,127,196,0.18);
}
.app-industry-icon {
  font-size: 28px; margin-bottom: 12px; display: block;
}
.app-industry-name {
  font-family: 'Rajdhani', sans-serif;
  font-size: 18px; font-weight: 700;
  color: var(--white); margin-bottom: 8px;
}
.app-industry-teaser {
  font-size: 13px; color: var(--text-dim);
  line-height: 1.6;
}
/* detail panels */
.app-detail { display: none; }
.app-detail.active { display: block; }
.app-detail-header {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--blue);
  border-radius: 4px; padding: 24px 28px;
  margin-bottom: 32px;
  display: flex; align-items: center; gap: 16px;
}
.app-detail-header-icon { font-size: 36px; }
.app-detail-header h3 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 26px; font-weight: 700; color: var(--white);
  margin-bottom: 4px;
}
.app-detail-header p {
  font-size: 14px; color: var(--text-dim); margin: 0;
}
.app-back {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px; font-weight: 600;
  color: var(--blue-light); cursor: pointer;
  background: none; border: none;
  letter-spacing: 0.06em; text-transform: uppercase;
  margin-bottom: 28px; padding: 0;
  transition: color 0.2s;
}
.app-back:hover { color: var(--white); }
.app-use-case {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px; padding: 28px;
  margin-bottom: 20px;
}
.app-use-case h4 {
  font-family: 'Rajdhani', sans-serif;
  font-size: 17px; font-weight: 700;
  color: var(--amber); margin-bottom: 10px;
  letter-spacing: 0.04em;
}
.app-use-case p {
  font-size: 15px; line-height: 1.8;
  color: var(--text-dim); margin-bottom: 12px;
}
.app-benefits {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-top: 12px;
}
.app-benefit-chip {
  display: inline-flex; align-items: center; gap: 5px;
  background: var(--blue-glow);
  border: 1px solid var(--blue);
  color: var(--blue-light);
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px; font-weight: 600;
  padding: 3px 10px; border-radius: 2px;
  letter-spacing: 0.06em;
}
.app-benefit-chip::before { content: '✓'; }
.app-kv-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px,1fr));
  gap: 12px; margin-top: 16px;
}
.app-kv {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 3px; padding: 12px 16px;
}
.app-kv-label {
  font-family: 'Rajdhani', sans-serif;
  font-size: 10px; font-weight: 700;
  color: var(--steel-dim); letter-spacing: 0.12em; text-transform: uppercase;
  margin-bottom: 4px;
}
.app-kv-value {
  font-family: 'Rajdhani', sans-serif;
  font-size: 15px; font-weight: 700; color: var(--white);
}


/* ── NAV DROPDOWN ──────────────────────────────────── */
.nav-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}
.nav-dropdown > a {
  display: flex; align-items: center; gap: 5px;
  font-family: 'Rajdhani', sans-serif;
  font-weight: 500; font-size: 13px;
  color: var(--steel); text-decoration: none;
  padding: 7px 11px; border-radius: 4px;
  letter-spacing: 0.04em; text-transform: uppercase;
  transition: all 0.2s;
  border: 1px solid transparent;
  white-space: nowrap;
}
.nav-dropdown:hover > a {
  color: var(--blue-light);
  background: var(--blue-glow);
  border-color: var(--border);
}
.nav-dropdown > a::after {
  content: '▾';
  font-size: 10px;
  opacity: 0.6;
  transition: transform 0.2s;
}
.nav-dropdown:hover > a::after {
  transform: rotate(180deg);
  opacity: 1;
}
.nav-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  width: 560px;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.4);
  padding: 20px;
  z-index: 2000;
  display: none;
}
.nav-dropdown:hover .nav-dropdown-menu {
  display: flex;
  gap: 20px;
}
.nav-dropdown-col {
  flex: 1;
}
.nav-dropdown-col-title {
  font-family: 'Rajdhani', sans-serif;
  font-size: 11px; font-weight: 700;
  color: var(--blue-light);
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0 0 10px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 10px;
  cursor: pointer;
}
.nav-dropdown-col-title:hover { color: var(--white); }
.nav-dropdown-item {
  display: flex; align-items: center; gap: 8px;
  padding: 7px 8px;
  border-radius: 3px;
  font-family: 'Rajdhani', sans-serif;
  font-size: 13px; font-weight: 500;
  color: var(--text);
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.nav-dropdown-item:hover {
  background: var(--surface);
  color: var(--white);
}
.nav-dropdown-item-icon { font-size: 14px; }
.nav-dropdown-divider {
  height: 1px; background: var(--border);
  margin: 8px 0;
}
@media (max-width: 900px) {
  .nav-dropdown-menu { display: none !important; }
}