/* ============================================================
   SENTIRA Instruments — site styles
   Light industrial theme. No external fonts or CDN dependencies.
   ============================================================ */

:root {
  --bg: #f4f6fa;
  --bg-2: #ffffff;
  --surface: #ffffff;
  --card: #ffffff;
  --card-2: #f7f9fc;
  --line: rgba(16, 32, 56, 0.10);
  --line-strong: rgba(16, 32, 56, 0.18);
  --text: #101b2d;
  --muted: #56657d;
  --dim: #8391a6;
  --accent: #0e86a0;
  --accent-2: #2563eb;
  --accent-bright: #0891b2;
  --accent-soft: rgba(14, 134, 160, 0.10);
  --warn: #c2740b;
  --radius: 18px;
  --radius-sm: 10px;
  --maxw: 1180px;
  --font: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, "Noto Sans SC", sans-serif;
  --mono: "JetBrains Mono", "Cascadia Code", Consolas, "SFMono-Regular", monospace;
  --shadow: 0 22px 48px -32px rgba(16, 32, 56, 0.45);
  --shadow-lift: 0 28px 56px -34px rgba(16, 32, 56, 0.40);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.65;
  color: var(--text);
  background:
    radial-gradient(1100px 560px at 84% -10%, rgba(37, 99, 235, 0.07), transparent 62%),
    radial-gradient(900px 520px at 4% -6%, rgba(14, 134, 160, 0.08), transparent 58%),
    var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }

h1, h2, h3, h4 { margin: 0; line-height: 1.15; letter-spacing: -0.025em; font-weight: 650; }
p { margin: 0; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
.section { padding: 92px 0; position: relative; }
.section[id], section[id] { scroll-margin-top: 88px; }
.section--tight { padding: 64px 0; }
.section--alt { background: #eef2f8; border-block: 1px solid var(--line); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--accent); margin-bottom: 14px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--accent); opacity: 0.8;
}

.h2 { font-size: clamp(28px, 3.4vw, 40px); }
.h3 { font-size: 20px; }
.lead { color: var(--muted); font-size: 17px; max-width: 60ch; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 32px; margin-bottom: 40px; flex-wrap: wrap; }
.section-head .lead { margin-top: 12px; }

.grad {
  background: linear-gradient(100deg, #0b7f96 0%, #0e86a0 30%, var(--accent-2) 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  height: 46px; padding: 0 22px; border-radius: 999px;
  font-size: 14.5px; font-weight: 600; letter-spacing: -0.01em;
  border: 1px solid transparent; cursor: pointer; white-space: nowrap;
  transition: transform 0.18s ease, box-shadow 0.18s ease, background 0.18s ease, border-color 0.18s ease;
}
.btn svg { width: 16px; height: 16px; }
.btn--primary {
  background: linear-gradient(100deg, #0ea5c6, #2f7bf6 55%, #2563eb);
  color: #ffffff; box-shadow: 0 12px 26px -14px rgba(37, 99, 235, 0.65);
}
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 18px 34px -16px rgba(37, 99, 235, 0.55); }
.btn--ghost { border-color: var(--line-strong); color: var(--text); background: #ffffff; }
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.btn--sm { height: 38px; padding: 0 16px; font-size: 13px; }

.link-arrow { display: inline-flex; align-items: center; gap: 7px; color: var(--accent); font-weight: 600; font-size: 14px; }
.link-arrow svg { width: 14px; height: 14px; transition: transform 0.2s ease; }
.link-arrow:hover svg { transform: translateX(4px); }

/* ---------- header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 60;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 34px; height: 70px; }
.brand { display: flex; align-items: center; gap: 11px; flex-shrink: 0; }
.brand svg { width: 32px; height: 32px; }
.brand-name { font-size: 17px; font-weight: 700; letter-spacing: 0.14em; color: var(--text); }
.brand-sub { display: block; font-family: var(--mono); font-size: 8.5px; letter-spacing: 0.3em; color: var(--dim); margin-top: 1px; }
.nav { display: flex; align-items: center; gap: 6px; margin-left: auto; }
.nav a {
  padding: 8px 13px; border-radius: 8px; font-size: 14px; color: var(--muted);
  transition: color 0.16s ease, background 0.16s ease;
}
.nav a:hover { color: var(--text); background: rgba(16, 32, 56, 0.05); }
.nav a.is-active { color: var(--text); font-weight: 600; }
.nav a.is-active::after {
  content: ""; display: block; height: 2px; width: 16px; margin: 3px auto -3px;
  background: var(--accent); border-radius: 2px;
}
.header-cta { margin-left: 6px; }
.nav-toggle {
  display: none; width: 42px; height: 42px; margin-left: auto;
  background: #ffffff; border: 1px solid var(--line-strong); border-radius: 10px;
  cursor: pointer; align-items: center; justify-content: center;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 18px; height: 1.5px; background: var(--text); border-radius: 2px; transition: 0.2s ease;
}
.nav-toggle span::before, .nav-toggle span::after { content: ""; position: relative; }
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after { top: 4.5px; }
body.nav-open .nav-toggle span { background: transparent; }
body.nav-open .nav-toggle span::before { top: 0; transform: rotate(45deg); }
body.nav-open .nav-toggle span::after { top: -1.5px; transform: rotate(-45deg); }

/* ---------- hero ---------- */
.hero { position: relative; padding: 84px 0 76px; overflow: hidden; }
.hero::before {
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(16, 32, 56, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(16, 32, 56, 0.05) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(70% 60% at 60% 35%, #000 20%, transparent 78%);
  -webkit-mask-image: radial-gradient(70% 60% at 60% 35%, #000 20%, transparent 78%);
  pointer-events: none;
}
.hero-grid { position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(38px, 4.9vw, 64px); letter-spacing: -0.035em; line-height: 1.02; margin: 6px 0 22px; }
.hero .lead { font-size: 18px; max-width: 52ch; }
.hero-actions { display: flex; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.hero-note { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 16px; margin-top: 26px; font-size: 13px; color: var(--dim); }
.hero-note span { display: inline-flex; align-items: center; gap: 7px; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: #10b981; box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.14); }

/* ---------- radar scope (light card, dark screen) ---------- */
.scope {
  position: relative; border-radius: 24px; padding: 18px;
  background: #ffffff;
  border: 1px solid var(--line-strong);
  box-shadow: 0 30px 60px -40px rgba(16, 32, 56, 0.55), 0 2px 6px rgba(16, 32, 56, 0.04);
}
.scope-head { display: flex; align-items: center; justify-content: space-between; padding: 2px 6px 14px; font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em; color: var(--dim); text-transform: uppercase; }
.scope-live { display: inline-flex; align-items: center; gap: 7px; color: #059669; }
.scope-screen { position: relative; border-radius: 14px; overflow: hidden; background: radial-gradient(circle at 50% 46%, #0b1c2e, #050a12 72%); border: 1px solid rgba(14, 134, 160, 0.28); }
.scope-screen svg { width: 100%; height: auto; }
.scope-foot { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding-top: 14px; }
.scope-metric { border: 1px solid var(--line); border-radius: 10px; padding: 9px 11px; background: #f7f9fc; }
.scope-metric b { display: block; font-family: var(--mono); font-size: 14px; color: var(--text); letter-spacing: 0.02em; }
.scope-metric small { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim); }
.sweep { transform-origin: 240px 220px; animation: spin 5.5s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.blip { animation: blink 3.2s ease-in-out infinite; }
.blip:nth-of-type(2) { animation-delay: 1.1s; }
.blip:nth-of-type(3) { animation-delay: 2.2s; }
@keyframes blink { 0%, 65%, 100% { opacity: 0; } 12%, 38% { opacity: 1; } }

/* ---------- trust bar ---------- */
.trust { border-block: 1px solid var(--line); background: #eef2f8; }
.trust-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px 34px; padding-block: 20px; }
.trust-item { display: flex; align-items: baseline; gap: 9px; font-size: 13px; color: var(--muted); }
.trust-item b { font-family: var(--mono); font-size: 15px; color: var(--text); }
.trust-item span { color: var(--dim); }

/* ---------- category cards ---------- */
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cat-card {
  position: relative; display: flex; flex-direction: column; gap: 14px;
  padding: 30px 28px; border-radius: var(--radius);
  background: #ffffff;
  border: 1px solid var(--line); overflow: hidden;
  box-shadow: 0 1px 2px rgba(16, 32, 56, 0.03);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.cat-card::after {
  content: ""; position: absolute; right: -60px; top: -60px; width: 180px; height: 180px;
  background: radial-gradient(circle, rgba(14, 134, 160, 0.12), transparent 65%);
  opacity: 0; transition: opacity 0.25s ease;
}
.cat-card:hover { transform: translateY(-4px); border-color: rgba(14, 134, 160, 0.38); box-shadow: var(--shadow-lift); }
.cat-card:hover::after { opacity: 1; }
.cat-icon {
  width: 52px; height: 52px; display: grid; place-items: center; border-radius: 13px;
  background: var(--accent-soft); border: 1px solid rgba(14, 134, 160, 0.22); color: var(--accent);
}
.cat-icon svg { width: 26px; height: 26px; }
.cat-card h3 { font-size: 19px; }
.cat-card p { color: var(--muted); font-size: 14.5px; }
.cat-card .link-arrow { margin-top: auto; padding-top: 8px; }

/* ---------- product cards ---------- */
.prod-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.prod-card {
  position: relative; display: flex; flex-direction: column; overflow: hidden;
  border-radius: var(--radius); background: #ffffff; border: 1px solid var(--line);
  box-shadow: 0 1px 2px rgba(16, 32, 56, 0.03);
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}
.prod-card:hover { transform: translateY(-5px); border-color: rgba(14, 134, 160, 0.35); box-shadow: var(--shadow-lift); }
.prod-art { position: relative; aspect-ratio: 4 / 3; background: #0b1424; border-bottom: 1px solid var(--line); overflow: hidden; }
.prod-art svg { width: 100%; height: 100%; transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1); }
.prod-card:hover .prod-art svg { transform: scale(1.06); }
.badge {
  position: absolute; top: 12px; left: 12px; z-index: 2;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 4px 9px; border-radius: 999px; color: #04222b;
  background: linear-gradient(100deg, #5ee7f5, #9df3fb);
}
.badge--alt { background: linear-gradient(100deg, #ffc46b, #ff9d63); }
.prod-body { padding: 20px 22px 22px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.prod-model { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; color: var(--dim); text-transform: uppercase; }
.prod-body h3 { font-size: 17.5px; letter-spacing: -0.02em; }
.prod-body h3 a:hover { color: var(--accent); }
.prod-desc { color: var(--muted); font-size: 13.5px; line-height: 1.6; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 2px; }
.chip {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.04em;
  padding: 4px 8px; border-radius: 6px; color: #46566e;
  background: #eef2f7; border: 1px solid rgba(16, 32, 56, 0.07);
}
.prod-card .link-arrow { margin-top: auto; padding-top: 12px; }

/* ---------- features / why ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-item { padding: 26px 22px; border-radius: var(--radius); border: 1px solid var(--line); background: #ffffff; box-shadow: 0 1px 2px rgba(16, 32, 56, 0.03); }
.why-item b { display: block; font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.14em; margin-bottom: 12px; }
.why-item h3 { font-size: 16.5px; margin-bottom: 8px; }
.why-item p { color: var(--muted); font-size: 14px; }

/* ---------- applications ---------- */
.app-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.app-card {
  position: relative; border-radius: var(--radius); border: 1px solid var(--line); overflow: hidden;
  padding: 28px; min-height: 210px;
  background: linear-gradient(150deg, #ffffff, #f3f7fc);
  display: flex; flex-direction: column; justify-content: flex-end; gap: 10px;
}
.app-card svg.app-bg { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0.9; object-fit: cover; }
.app-card > * { position: relative; }
.app-card h3 { font-size: 19px; }
.app-card p { color: var(--muted); font-size: 14px; max-width: 42ch; }
.app-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: step; }
.step { position: relative; padding-top: 26px; border-top: 1px solid var(--line-strong); }
.step::before {
  counter-increment: step; content: "0" counter(step);
  position: absolute; top: -11px; left: 0; padding-right: 8px; background: var(--bg);
  font-family: var(--mono); font-size: 11px; color: var(--accent); letter-spacing: 0.1em;
}
.step h3 { font-size: 15.5px; margin-bottom: 7px; }
.step p { color: var(--muted); font-size: 13.5px; }

/* ---------- cta band ---------- */
.cta-band {
  position: relative; overflow: hidden; border-radius: 24px; padding: 52px;
  background: linear-gradient(120deg, #e4f5f9, #e8efff 55%, #f3f7fc);
  border: 1px solid rgba(14, 134, 160, 0.22);
  display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap;
}
.cta-band h2 { font-size: clamp(24px, 2.8vw, 34px); max-width: 22ch; }
.cta-band p { color: var(--muted); margin-top: 10px; max-width: 46ch; font-size: 15px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- footer (dark anchor block) ---------- */
.site-footer { border-top: 1px solid var(--line); background: #0b1524; margin-top: 0; }
.footer-grid { display: grid; grid-template-columns: 1.7fr 1fr 1fr 1.3fr; gap: 40px; padding: 60px 0 44px; }
.footer-grid h4 { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.16em; text-transform: uppercase; color: #778aa2; margin-bottom: 16px; font-weight: 500; }
.footer-grid li + li { margin-top: 9px; }
.footer-grid a, .footer-grid p { color: #a7b5c9; font-size: 14px; }
.footer-grid a:hover { color: #67e8f9; }
.footer-about p { margin-top: 16px; max-width: 34ch; font-size: 13.5px; color: #7f8da0; }
.site-footer .brand-name { color: #ffffff; }
.site-footer .brand-sub { color: #67788e; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 12.5px; color: #778aa2; }

/* ---------- inner page head ---------- */
.page-head { padding: 66px 0 46px; border-bottom: 1px solid var(--line); position: relative; }
.page-head h1 { font-size: clamp(32px, 4vw, 48px); margin-bottom: 14px; }
.crumbs { display: flex; gap: 8px; align-items: center; font-size: 12.5px; color: var(--dim); margin-bottom: 18px; flex-wrap: wrap; }
.crumbs a:hover { color: var(--accent); }
.crumbs span { opacity: 0.5; }

/* ---------- toolbar / filters ---------- */
.toolbar { display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; margin-bottom: 30px; }
.filters { display: flex; gap: 8px; flex-wrap: wrap; }
.filter {
  padding: 9px 16px; border-radius: 999px; border: 1px solid var(--line);
  background: #ffffff; color: var(--muted); font-size: 13.5px; cursor: pointer;
  transition: 0.18s ease;
}
.filter:hover { color: var(--text); border-color: var(--line-strong); }
.filter.is-active { background: var(--accent-soft); border-color: rgba(14, 134, 160, 0.45); color: var(--accent); font-weight: 600; }
.search-box { position: relative; display: flex; align-items: center; }
.search-box svg { position: absolute; left: 14px; width: 15px; height: 15px; color: var(--dim); }
.search-box input {
  width: 260px; height: 42px; padding: 0 14px 0 38px; border-radius: 999px;
  background: #ffffff; border: 1px solid var(--line); color: var(--text);
  font-size: 13.5px; outline: none; transition: border-color 0.18s ease;
}
.search-box input::placeholder { color: var(--dim); }
.search-box input:focus { border-color: rgba(14, 134, 160, 0.55); }
.result-count { font-family: var(--mono); font-size: 12px; color: var(--dim); letter-spacing: 0.06em; }
.empty { padding: 70px 0; text-align: center; color: var(--muted); }

/* ---------- product detail ---------- */
.pdp { padding: 46px 0 20px; }
.pdp-grid { display: grid; grid-template-columns: 1.02fr 0.98fr; gap: 52px; align-items: start; }
.pdp-art { border-radius: 20px; border: 1px solid var(--line); overflow: hidden; background: #0b1424; position: sticky; top: 92px; box-shadow: var(--shadow); }
.pdp-art svg { width: 100%; height: auto; }
.pdp-title { font-size: clamp(28px, 3.5vw, 40px); margin: 10px 0 12px; }
.pdp-sub { color: var(--muted); font-size: 16px; }
.pdp-actions { display: flex; gap: 12px; margin: 26px 0 8px; flex-wrap: wrap; }
.key-specs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; margin-top: 26px; }
.key-spec { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: #ffffff; }
.key-spec small { display: block; font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--dim); margin-bottom: 5px; }
.key-spec b { font-size: 15px; font-weight: 600; }
.pdp-body { margin-top: 60px; }
.feature-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 32px; }
.feature-cols li { display: flex; gap: 10px; color: var(--muted); font-size: 14.5px; padding: 7px 0; border-bottom: 1px dashed rgba(16, 32, 56, 0.10); }
.feature-cols li svg { width: 17px; height: 17px; flex-shrink: 0; color: var(--accent); margin-top: 3px; }
.pdp-body h2.h3 { margin-bottom: 14px; }
.pdp-body > .chips { margin-top: 4px; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 8px; }
.spec-table tr { border-bottom: 1px solid var(--line); }
.spec-table tr:first-child { border-top: 1px solid var(--line); }
.spec-table th, .spec-table td { text-align: left; padding: 13px 4px; font-size: 14.5px; vertical-align: top; }
.spec-table th { width: 38%; color: var(--dim); font-weight: 500; }
.spec-table td { color: var(--text); }
.info-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 52px; align-items: start; margin-top: 14px; }
.panel { border: 1px solid var(--line); border-radius: 16px; padding: 26px; background: #f7f9fc; }
.panel h3 { font-size: 16px; margin-bottom: 14px; }
.panel p, .panel li { color: var(--muted); font-size: 14px; }
.related { margin-top: 70px; }

/* ---------- contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 46px; align-items: start; }
.form-card { border: 1px solid var(--line); border-radius: 20px; padding: 34px; background: #ffffff; box-shadow: var(--shadow); }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 12.5px; letter-spacing: 0.04em; color: var(--muted); margin-bottom: 7px; }
.field input, .field select, .field textarea {
  width: 100%; padding: 12px 14px; border-radius: 10px; font-family: inherit; font-size: 14.5px;
  background: #ffffff; border: 1px solid var(--line-strong); color: var(--text); outline: none;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}
.field textarea { min-height: 130px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: rgba(14, 134, 160, 0.6); box-shadow: 0 0 0 3px rgba(14, 134, 160, 0.10); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-note { font-size: 12px; color: var(--dim); margin-top: 14px; }
.form-status { margin-top: 16px; font-size: 13.5px; padding: 12px 14px; border-radius: 10px; display: none; }
.form-status.is-ok { display: block; background: #e8f7f0; border: 1px solid rgba(5, 150, 105, 0.35); color: #06654a; }
.form-status.is-err { display: block; background: #fff4e5; border: 1px solid rgba(194, 116, 11, 0.35); color: #8a5206; }
.contact-info { display: grid; gap: 14px; }
.info-card { display: flex; gap: 15px; padding: 20px; border-radius: 14px; border: 1px solid var(--line); background: #ffffff; }
.info-card svg { width: 20px; height: 20px; color: var(--accent); flex-shrink: 0; margin-top: 3px; }
.info-card b { display: block; font-size: 14px; margin-bottom: 3px; }
.info-card p, .info-card a { color: var(--muted); font-size: 13.5px; }
.info-card a:hover { color: var(--accent); }

/* ---------- utility ---------- */
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
/* content stays visible when JS is unavailable; the animation class is opt-in */
.js .reveal { opacity: 0; transform: translateY(16px); transition: opacity 0.7s cubic-bezier(0.2, 0.7, 0.2, 1), transform 0.7s cubic-bezier(0.2, 0.7, 0.2, 1); }
.js .reveal.is-in { opacity: 1; transform: none; }
.d1 { transition-delay: 0.06s; } .d2 { transition-delay: 0.12s; } .d3 { transition-delay: 0.18s; }
.skip { position: absolute; left: -9999px; }
.skip:focus { left: 16px; top: 12px; z-index: 200; padding: 10px 16px; background: var(--accent); color: #ffffff; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .hero-grid { gap: 36px; }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(3, 1fr); row-gap: 34px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 940px) {
  .nav { display: none; }
  .nav-toggle { display: flex; }
  .header-cta { display: none; }
  body.nav-open .nav {
    display: flex; flex-direction: column; align-items: stretch; gap: 4px;
    position: fixed; inset: 70px 0 auto; padding: 16px 24px 24px;
    background: rgba(255, 255, 255, 0.98); border-bottom: 1px solid var(--line);
    box-shadow: 0 24px 40px -30px rgba(16, 32, 56, 0.4);
  }
  body.nav-open .nav a { padding: 12px 10px; font-size: 15px; }
  .hero-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 56px; }
  .cat-grid, .prod-grid { grid-template-columns: repeat(2, 1fr); }
  .pdp-grid { grid-template-columns: 1fr; gap: 30px; }
  .pdp-art { position: static; }
  .info-grid, .contact-grid, .app-grid { grid-template-columns: 1fr; }
  .section { padding: 70px 0; }
  .cta-band { padding: 38px 30px; }
}
@media (max-width: 680px) {
  .prod-grid, .cat-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: 36px; }
  .section-head { display: block; }
  .search-box input { width: 100%; }
  .search-box { width: 100%; }
  .toolbar { align-items: stretch; }
  .feature-cols { grid-template-columns: 1fr; }
  .key-specs { grid-template-columns: 1fr; }
  .field-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
  .cta-band { padding: 30px 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
  .reveal, .js .reveal { opacity: 1 !important; transform: none !important; }
}

/* ---------------------------------------------------------------- conversion links */
.footer-social { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; align-items: center; }
.footer-social a {
  min-width: 32px; height: 32px; padding: 0 10px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.18); border-radius: 999px; color: inherit;
  font-size: 11.5px; letter-spacing: 0.04em; text-decoration: none; transition: border-color .18s, color .18s;
}
.footer-social a:hover { border-color: var(--accent); color: var(--accent); }
.footer-social svg { width: 16px; height: 16px; }

.wa-float {
  position: fixed; right: 18px; bottom: 18px; z-index: 80;
  display: inline-flex; align-items: center; gap: 8px; padding: 10px 16px;
  border-radius: 999px; background: #25d366; color: #06281a;
  font-weight: 700; font-size: 14px; text-decoration: none;
  box-shadow: 0 12px 30px -10px rgba(0, 0, 0, 0.45);
  transition: transform .18s ease;
}
.wa-float:hover { transform: translateY(-1px); }
.wa-float svg { width: 20px; height: 20px; }
@media (max-width: 680px) {
  .wa-float span { display: none; }
  .wa-float { padding: 12px; right: 14px; bottom: 14px; }
}