/* ==========================================================================
   Visionbotix — main stylesheet
   ========================================================================== */

:root {
  --bg: #060a14;
  --bg-2: #0a1020;
  --surface: rgba(255, 255, 255, 0.035);
  --surface-2: rgba(255, 255, 255, 0.06);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e7ecf5;
  --text-dim: #98a4bb;
  --text-faint: #66738d;
  --cyan: #22d3ee;
  --violet: #7c5cff;
  --gold: #d8b56a;
  --accent-grad: linear-gradient(100deg, #22d3ee, #7c5cff);
  --radius: 16px;
  --radius-sm: 10px;
  --font-head: "Space Grotesk", "Segoe UI", system-ui, sans-serif;
  --font-body: "Inter", "Segoe UI", system-ui, sans-serif;
  --container: 1180px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 90px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

h1, h2, h3, h4 { font-family: var(--font-head); font-weight: 600; line-height: 1.15; letter-spacing: -0.01em; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }

::selection { background: rgba(124, 92, 255, 0.45); color: #fff; }

/* --- utility ------------------------------------------------------------ */

.grad-text {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 18px;
}
.eyebrow::before {
  content: "";
  width: 26px; height: 1.5px;
  background: var(--accent-grad);
  border-radius: 2px;
}

.section { padding: 104px 0; position: relative; }
.section.tight { padding: 72px 0; }

.section-head { max-width: 640px; margin-bottom: 56px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.section-head.center .eyebrow { justify-content: center; }
.section-head h2 { font-size: clamp(30px, 4.2vw, 44px); margin-bottom: 16px; }
.section-head p { color: var(--text-dim); font-size: 17.5px; }

/* --- buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 15.5px;
  font-weight: 600;
  letter-spacing: 0.01em;
  cursor: pointer;
  border: none;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}
.btn svg { transition: transform 0.25s ease; }
.btn:hover svg { transform: translateX(3px); }

.btn-primary {
  background: var(--accent-grad);
  color: #04101c;
  box-shadow: 0 8px 28px rgba(34, 211, 238, 0.22);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 36px rgba(124, 92, 255, 0.38); }

.btn-ghost {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border-strong);
}
.btn-ghost:hover { border-color: var(--cyan); background: rgba(34, 211, 238, 0.07); transform: translateY(-2px); }

.btn-sm { padding: 9px 20px; font-size: 14px; }

/* --- nav ----------------------------------------------------------------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background 0.35s ease, border-color 0.35s ease, backdrop-filter 0.35s ease;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(6, 10, 20, 0.78);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border-bottom-color: var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo { display: flex; align-items: center; }
.logo img { height: 38px; width: auto; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
  font-size: 15px;
  font-weight: 500;
}
.nav-links a { color: var(--text-dim); transition: color 0.2s ease; position: relative; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0; bottom: -6px;
  width: 0; height: 2px;
  border-radius: 2px;
  background: var(--accent-grad);
  transition: width 0.25s ease;
}
.nav-links a:not(.btn):hover::after, .nav-links a:not(.btn).active::after { width: 100%; }
.nav-links .btn { color: #04101c; }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  width: 42px; height: 42px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  width: 18px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* --- hero ----------------------------------------------------------------- */

.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: 150px 0 90px;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(52% 44% at 82% 12%, rgba(124, 92, 255, 0.17), transparent 70%),
    radial-gradient(46% 42% at 12% 82%, rgba(34, 211, 238, 0.12), transparent 70%),
    var(--bg);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(65% 60% at 50% 38%, black 30%, transparent 100%);
  mask-image: radial-gradient(65% 60% at 50% 38%, black 30%, transparent 100%);
}
.hero-inner { position: relative; max-width: 830px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 7px 16px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-size: 13.5px;
  font-weight: 500;
  color: var(--text-dim);
  margin-bottom: 28px;
}
.hero-badge i {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 10px var(--cyan);
  animation: pulse 2.4s infinite;
}
@keyframes pulse { 50% { opacity: 0.35; } }

.hero h1 {
  font-size: clamp(40px, 6.6vw, 74px);
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 26px;
}
.hero p.lead {
  font-size: clamp(17px, 2vw, 20px);
  color: var(--text-dim);
  max-width: 640px;
  margin-bottom: 40px;
}
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 64px; }

.hero-stats {
  display: flex;
  gap: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: rgba(10, 16, 32, 0.55);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  max-width: 780px;
  flex-wrap: wrap;
}
.hero-stats > div {
  flex: 1 1 180px;
  padding: 22px 26px;
  border-right: 1px solid var(--border);
}
.hero-stats > div:last-child { border-right: none; }
.hero-stats b {
  display: block;
  font-family: var(--font-head);
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 2px;
}
.hero-stats small { color: var(--text-faint); font-size: 13px; letter-spacing: 0.02em; }

/* --- services grid --------------------------------------------------------- */

.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: var(--accent-grad);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.card:hover { transform: translateY(-5px); border-color: var(--border-strong); background: var(--surface-2); }
.card:hover::before { opacity: 1; }

.card .icon {
  width: 50px; height: 50px;
  border-radius: 13px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(34,211,238,0.14), rgba(124,92,255,0.14));
  border: 1px solid rgba(34, 211, 238, 0.22);
  margin-bottom: 20px;
}
.card .icon svg { width: 24px; height: 24px; stroke: var(--cyan); }
.card h3 { font-size: 19px; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: 15px; line-height: 1.6; }

/* --- cyber band ------------------------------------------------------------- */

.cyber { background: linear-gradient(180deg, var(--bg-2), var(--bg)); border-block: 1px solid var(--border); }

.cyber-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.cyber-item {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
  background: rgba(6, 10, 20, 0.6);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.cyber-item:hover { border-color: rgba(34, 211, 238, 0.4); transform: translateY(-4px); }
.cyber-item .num {
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--cyan);
  display: block;
  margin-bottom: 14px;
}
.cyber-item h3 { font-size: 17.5px; margin-bottom: 9px; }
.cyber-item p { color: var(--text-dim); font-size: 14.5px; }

.badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 44px; justify-content: center; }
.badge {
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}

/* --- products ------------------------------------------------------------ */

.product-feature {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
  margin-bottom: 22px;
}

.pcard {
  position: relative;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
  display: flex;
  flex-direction: column;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}
.pcard:hover {
  transform: translateY(-6px);
  border-color: var(--border-strong);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}
.pcard-media { position: relative; aspect-ratio: 16 / 11; overflow: hidden; }
.pcard-media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.pcard:hover .pcard-media img { transform: scale(1.05); }
.pcard-media::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(6, 10, 20, 0.92));
}
.pcard-tag {
  position: absolute;
  top: 16px; left: 16px;
  z-index: 2;
  padding: 6px 14px;
  border-radius: 999px;
  font-family: var(--font-head);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: rgba(6, 10, 20, 0.72);
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: var(--cyan);
}
.pcard-tag.gold { border-color: rgba(216, 181, 106, 0.45); color: var(--gold); }
.pcard-body { padding: 26px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.pcard-body h3 { font-size: 21px; margin-bottom: 10px; }
.pcard-body p { color: var(--text-dim); font-size: 15px; flex: 1; margin-bottom: 22px; }
.pcard-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  color: var(--cyan);
}
.pcard-link svg { transition: transform 0.25s ease; }
.pcard:hover .pcard-link svg { transform: translateX(4px); }

.product-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.pcard.slim .pcard-media { aspect-ratio: 16 / 7; }

/* --- about ------------------------------------------------------------------ */

.about-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 72px;
  align-items: center;
}
.about-grid h2 { font-size: clamp(28px, 3.6vw, 40px); margin-bottom: 20px; }
.about-grid > div > p { color: var(--text-dim); margin-bottom: 18px; }

.about-points { margin-top: 30px; display: grid; gap: 16px; }
.about-points li { display: flex; gap: 14px; align-items: flex-start; color: var(--text-dim); font-size: 15.5px; }
.about-points li svg { flex: none; margin-top: 3px; }
.about-points b { color: var(--text); }

.about-visual { position: relative; }
.about-visual img {
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  width: 100%;
  aspect-ratio: 4 / 4.6;
  object-fit: cover;
}
.about-visual .float-chip {
  position: absolute;
  left: -26px; bottom: 34px;
  background: rgba(10, 16, 32, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-strong);
  border-radius: 14px;
  padding: 16px 20px;
  font-size: 13.5px;
  color: var(--text-dim);
  box-shadow: 0 18px 44px rgba(0,0,0,0.5);
}
.about-visual .float-chip b {
  display: block;
  font-family: var(--font-head);
  font-size: 17px;
  color: var(--text);
}

/* --- process ---------------------------------------------------------------- */

.process {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 14px;
  counter-reset: step;
}
.step {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 18px;
  background: var(--surface);
  transition: border-color 0.3s ease, transform 0.3s ease;
}
.step:hover { border-color: rgba(124, 92, 255, 0.45); transform: translateY(-4px); }
.step::before {
  counter-increment: step;
  content: "0" counter(step);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--violet);
  display: block;
  margin-bottom: 12px;
}
.step b { font-family: var(--font-head); font-size: 15.5px; display: block; margin-bottom: 5px; }
.step small { color: var(--text-faint); font-size: 12.5px; line-height: 1.45; display: block; }

/* --- contact ------------------------------------------------------------------ */

.contact-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 60px; }

.contact-info h2 { font-size: clamp(28px, 3.5vw, 38px); margin-bottom: 18px; }
.contact-info > p { color: var(--text-dim); margin-bottom: 34px; }

.contact-line { display: flex; gap: 16px; align-items: flex-start; padding: 17px 0; border-top: 1px solid var(--border); }
.contact-line:last-child { border-bottom: 1px solid var(--border); }
.contact-line .icon {
  width: 42px; height: 42px; flex: none;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, rgba(34,211,238,0.14), rgba(124,92,255,0.14));
  border: 1px solid rgba(34, 211, 238, 0.22);
}
.contact-line .icon svg { width: 19px; height: 19px; stroke: var(--cyan); }
.contact-line small { display: block; color: var(--text-faint); font-size: 12.5px; letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: 2px; }
.contact-line a, .contact-line span { font-size: 15.5px; color: var(--text); }
.contact-line a:hover { color: var(--cyan); }

.form-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid .full { grid-column: 1 / -1; }
.field label { display: block; font-size: 13px; font-weight: 600; letter-spacing: 0.04em; color: var(--text-dim); margin-bottom: 8px; }
.field input, .field textarea, .field select {
  width: 100%;
  background: rgba(6, 10, 20, 0.6);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 13px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 15px;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.14);
}
.field textarea { resize: vertical; min-height: 130px; }
.form-note { font-size: 13px; color: var(--text-faint); margin-top: 14px; }

/* --- footer ------------------------------------------------------------------- */

footer { border-top: 1px solid var(--border); background: var(--bg-2); padding: 64px 0 34px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 44px; margin-bottom: 48px; }
.footer-grid p { color: var(--text-dim); font-size: 14.5px; margin-top: 16px; max-width: 300px; }
.footer-grid h4 { font-size: 14px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 18px; }
.footer-grid ul { display: grid; gap: 11px; }
.footer-grid ul a { color: var(--text-dim); font-size: 14.5px; transition: color 0.2s ease; }
.footer-grid ul a:hover { color: var(--cyan); }

.socials { display: flex; gap: 12px; margin-top: 22px; }
.socials a {
  width: 40px; height: 40px;
  border-radius: 11px;
  border: 1px solid var(--border-strong);
  display: flex; align-items: center; justify-content: center;
  transition: border-color 0.25s ease, background 0.25s ease, transform 0.25s ease;
}
.socials a:hover { border-color: var(--cyan); background: rgba(34,211,238,0.08); transform: translateY(-2px); }
.socials svg { width: 17px; height: 17px; fill: var(--text-dim); }
.socials a:hover svg { fill: var(--cyan); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 26px;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--text-faint);
  font-size: 13.5px;
}

/* --- product pages -------------------------------------------------------------- */

.page-hero {
  position: relative;
  padding: 190px 0 100px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}
.page-hero .hero-bg { position: absolute; inset: 0; }
.page-hero-inner { position: relative; display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 64px; align-items: center; }
.page-hero h1 { font-size: clamp(34px, 5vw, 56px); letter-spacing: -0.02em; margin: 18px 0 22px; }
.page-hero p.lead { font-size: 18px; color: var(--text-dim); max-width: 560px; margin-bottom: 36px; }
.page-hero-visual img {
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55);
  width: 100%;
}
.crumb { font-size: 13.5px; color: var(--text-faint); display: flex; gap: 8px; align-items: center; }
.crumb a { color: var(--text-dim); }
.crumb a:hover { color: var(--cyan); }

.chips { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 30px; }
.chip {
  font-family: var(--font-head);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  padding: 7px 15px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, 0.3);
  color: var(--cyan);
  background: rgba(34, 211, 238, 0.06);
}
.chip.gold { border-color: rgba(216,181,106,0.4); color: var(--gold); background: rgba(216,181,106,0.06); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; }
.split img {
  border-radius: var(--radius);
  border: 1px solid var(--border-strong);
  width: 100%;
  object-fit: cover;
}
.split h2 { font-size: clamp(26px, 3.4vw, 36px); margin-bottom: 18px; }
.split > div > p { color: var(--text-dim); margin-bottom: 16px; }

.checklist { display: grid; gap: 14px; margin-top: 26px; }
.checklist li { display: flex; gap: 13px; align-items: flex-start; color: var(--text-dim); font-size: 15.5px; }
.checklist li svg { flex: none; margin-top: 4px; }
.checklist b { color: var(--text); }

/* compare table */
.compare {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 15px;
}
.compare-wrap { border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.compare th, .compare td { padding: 17px 22px; text-align: left; border-bottom: 1px solid var(--border); }
.compare thead th { font-family: var(--font-head); font-size: 15px; background: var(--surface-2); }
.compare thead th:last-child { color: var(--cyan); }
.compare tbody tr:last-child td { border-bottom: none; }
.compare td { color: var(--text-dim); }
.compare td:last-child { color: var(--text); }
.compare td:first-child { color: var(--text-faint); }

/* spec table */
.spec {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.spec-row { display: grid; grid-template-columns: 240px 1fr; border-bottom: 1px solid var(--border); }
.spec-row:last-child { border-bottom: none; }
.spec-row dt {
  padding: 17px 24px;
  background: var(--surface);
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 14.5px;
}
.spec-row dd { padding: 17px 24px; color: var(--text-dim); font-size: 15px; }

/* FAQ */
.faq-list { max-width: 840px; margin: 0 auto; display: grid; gap: 14px; }
.faq-item {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface);
  overflow: hidden;
  transition: border-color 0.25s ease;
}
.faq-item[open], .faq-item:hover { border-color: var(--border-strong); }
.faq-item summary {
  cursor: pointer;
  padding: 19px 24px;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 16.5px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 22px;
  font-weight: 400;
  color: var(--cyan);
  transition: transform 0.25s ease;
  flex: none;
  line-height: 1;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { padding: 0 24px 20px; color: var(--text-dim); font-size: 15px; }

/* CTA band */
.cta-band {
  border: 1px solid var(--border-strong);
  border-radius: 22px;
  padding: 64px 56px;
  text-align: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(60% 120% at 50% 0%, rgba(124, 92, 255, 0.18), transparent 70%),
    var(--bg-2);
}
.cta-band h2 { font-size: clamp(28px, 3.8vw, 42px); margin-bottom: 16px; }
.cta-band p { color: var(--text-dim); max-width: 540px; margin: 0 auto 34px; }

/* --- reveal animations ------------------------------------------------------------ */

.reveal { opacity: 0; transform: translateY(26px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal[data-delay="1"] { transition-delay: 0.1s; }
.reveal[data-delay="2"] { transition-delay: 0.2s; }
.reveal[data-delay="3"] { transition-delay: 0.3s; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* --- responsive -------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .grid-3, .cyber-grid, .product-feature { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(3, 1fr); }
  .about-grid, .page-hero-inner, .split { grid-template-columns: 1fr; gap: 44px; }
  .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-visual .float-chip { left: 16px; }
  .page-hero { padding-top: 150px; }
}

@media (max-width: 700px) {
  .section { padding: 72px 0; }
  .grid-3, .grid-2, .cyber-grid, .product-feature, .product-row { grid-template-columns: 1fr; }
  .process { grid-template-columns: repeat(2, 1fr); }
  .hero-stats > div { flex: 1 1 45%; border-top: 1px solid var(--border); }
  .form-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .spec-row { grid-template-columns: 1fr; }
  .spec-row dt { padding-bottom: 4px; }
  .spec-row dd { padding-top: 4px; }
  .cta-band { padding: 48px 26px; }
  .form-card { padding: 26px 20px; }

  .nav-toggle { display: flex; }
  .nav-links {
    position: fixed;
    top: 74px; left: 0; right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: rgba(6, 10, 20, 0.97);
    -webkit-backdrop-filter: blur(18px);
    backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px 24px;
    transform: translateY(-12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease, transform 0.3s ease;
  }
  .nav-links.open { opacity: 1; transform: none; pointer-events: auto; }
  .nav-links a { padding: 13px 0; width: 100%; font-size: 16px; }
  .nav-links a:not(.btn)::after { display: none; }
  .nav-links .btn { margin-top: 14px; justify-content: center; }
}