/* ==========================================================
   KRONVOLT — premium dark theme
   Brand tokens live here; swap --kv-accent once branding is final.
   ========================================================== */
:root {
  --kv-bg: #050505;
  --kv-bg-alt: #0a0a0b;
  --kv-surface: #0f0f11;
  --kv-surface-2: #151518;
  --kv-line: rgba(255, 255, 255, 0.08);
  --kv-line-strong: rgba(255, 255, 255, 0.16);
  --kv-text: #f4f4f2;
  --kv-muted: #8b8b90;
  --kv-dim: #5a5a60;
  --kv-accent: #00dbf8;          /* Kronvolt cyan (sampled from logo) */
  --kv-accent-rgb: 0, 219, 248;

  --kv-font-display: "Inter Tight", system-ui, sans-serif;
  --kv-font-body: "Inter", system-ui, sans-serif;

  --kv-radius: 20px;
  --kv-ease: cubic-bezier(.2, .7, .2, 1);
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
  background: var(--kv-bg);
  color: var(--kv-text);
  font-family: var(--kv-font-body);
  font-weight: 300;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

::selection { background: rgba(var(--kv-accent-rgb), .35); color: #fff; }

a { color: inherit; text-decoration: none; }

.container { max-width: 1240px; padding-inline: 24px; }

/* ---------- Typography ---------- */
.kv-eyebrow {
  font-family: var(--kv-font-body);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .28em;
  text-transform: uppercase;
  color: var(--kv-accent);
  margin-bottom: 1.5rem;
}

.kv-display {
  font-family: var(--kv-font-display);
  font-weight: 300;
  font-size: clamp(2.8rem, 6.2vw, 5.6rem);
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 1.75rem;
}

.kv-h2 {
  font-family: var(--kv-font-display);
  font-weight: 300;
  font-size: clamp(2rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

.kv-lead {
  color: var(--kv-muted);
  font-size: 1.125rem;
  max-width: 34rem;
}

.kv-muted { color: var(--kv-dim); }

/* ---------- Buttons ---------- */
.kv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: 15px 30px;
  border-radius: 999px;
  font-family: var(--kv-font-body);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  border: 1px solid transparent;
  transition: all .35s var(--kv-ease);
  cursor: pointer;
  white-space: nowrap;
}
.kv-btn-sm { padding: 10px 20px; font-size: 13px; }

.kv-btn-light { background: var(--kv-text); color: #000; }
.kv-btn-light:hover { background: #fff; color: #000; box-shadow: 0 0 40px rgba(255,255,255,.18); transform: translateY(-1px); }

.kv-btn-ghost { border-color: var(--kv-line-strong); color: var(--kv-text); }
.kv-btn-ghost:hover { border-color: var(--kv-text); color: #fff; }

.kv-link {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  font-size: 14px;
  font-weight: 500;
  color: var(--kv-text);
  transition: gap .3s var(--kv-ease), color .3s;
}
.kv-link::after { content: "→"; transition: transform .3s var(--kv-ease); }
.kv-link:hover { color: var(--kv-accent); }
.kv-link:hover::after { transform: translateX(4px); }

/* ---------- Logo ---------- */
.kv-logo { display: inline-flex; align-items: center; padding: 0; margin: 0; }
.kv-logo img { height: 34px; width: auto; display: block; transition: height .4s var(--kv-ease); }
.kv-nav.scrolled .kv-logo img { height: 28px; }
.kv-footer .kv-logo img { height: 30px; }

/* ---------- Nav ---------- */
.kv-nav {
  padding: 22px 0;
  transition: padding .4s var(--kv-ease), background .4s, border-color .4s;
  border-bottom: 1px solid transparent;
}
.kv-nav.scrolled {
  padding: 14px 0;
  background: rgba(5, 5, 5, .72);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  border-color: var(--kv-line);
}
.kv-nav .nav-link {
  color: var(--kv-muted);
  font-size: 14px;
  font-weight: 400;
  padding: 8px 14px !important;
  white-space: nowrap;
  transition: color .3s;
}
.kv-nav .nav-link:hover { color: var(--kv-text); }

.kv-toggler { border: 0; padding: 8px; width: 40px; height: 40px; display: flex; flex-direction: column; justify-content: center; gap: 7px; box-shadow: none !important; }
.kv-toggler span { display: block; height: 1px; background: var(--kv-text); transition: transform .3s var(--kv-ease); }
.kv-toggler[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.kv-toggler[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

.kv-lang-btn {
  background: none;
  border: 1px solid var(--kv-line-strong);
  color: var(--kv-text);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .12em;
}
.kv-lang-btn::after { margin-left: .5em; vertical-align: .15em; border-top-width: .28em; border-right-width: .28em; border-left-width: .28em; }
.kv-lang .dropdown-menu {
  background: var(--kv-surface);
  border: 1px solid var(--kv-line);
  border-radius: 14px;
  padding: 6px;
  min-width: 160px;
  margin-top: 10px !important;
  box-shadow: 0 30px 60px rgba(0,0,0,.6);
}
.kv-lang .dropdown-item {
  color: var(--kv-muted);
  font-size: 14px;
  border-radius: 8px;
  padding: 8px 12px;
}
.kv-lang .dropdown-item:hover,
.kv-lang .dropdown-item.active { background: var(--kv-surface-2); color: var(--kv-text); }

@media (max-width: 1199.98px) {
  .kv-nav .navbar-collapse {
    background: rgba(5,5,5,.96);
    margin: 14px -24px 0;
    padding: 12px 24px 24px;
    border-bottom: 1px solid var(--kv-line);
  }
  .kv-nav .nav-link { padding: 12px 0 !important; font-size: 18px; }
  .kv-nav .navbar-nav { margin-bottom: 16px; }
}

/* ---------- Hero ---------- */
.kv-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 140px 0 80px;
  overflow: hidden;
}
.kv-hero-glow {
  position: absolute;
  width: 900px; height: 900px;
  right: -200px; top: 50%;
  transform: translateY(-50%);
  background: radial-gradient(circle, rgba(var(--kv-accent-rgb), .13) 0%, rgba(var(--kv-accent-rgb), .03) 35%, transparent 65%);
  pointer-events: none;
}
.kv-glow-bottom { right: auto; left: -300px; top: auto; bottom: -500px; transform: none; }
.kv-glow-left { right: auto; left: -450px; top: 30%; }

/* Battery unit rendered in CSS */
.kv-unit-stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 0;
}
.kv-unit {
  position: relative;
  width: min(280px, 62vw);
  padding: 14px 14px 56px;
  border-radius: 18px;
  background: linear-gradient(160deg, #1d1d20 0%, #0e0e10 45%, #08080a 100%);
  border: 1px solid rgba(255,255,255,.07);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,.09),
    inset 1px 0 0 rgba(255,255,255,.04),
    0 60px 120px -30px rgba(0,0,0,.9),
    0 0 80px rgba(var(--kv-accent-rgb), .06);
  display: flex;
  flex-direction: column;
  gap: 8px;
  animation: kv-float 7s ease-in-out infinite;
}
.kv-unit-top { height: 10px; border-radius: 6px; background: linear-gradient(90deg, transparent, rgba(255,255,255,.08), transparent); }
.kv-module {
  position: relative;
  height: var(--mh, 110px);
  border-radius: 10px;
  background: linear-gradient(180deg, #131316, #0b0b0d);
  border: 1px solid rgba(255,255,255,.05);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.05);
}
.kv-led {
  position: absolute;
  left: 50%; top: 18px; bottom: 18px;
  width: 2px;
  transform: translateX(-50%);
  border-radius: 2px;
  background: linear-gradient(180deg, transparent, var(--kv-accent), transparent);
  box-shadow: 0 0 12px rgba(var(--kv-accent-rgb), .8), 0 0 30px rgba(var(--kv-accent-rgb), .4);
  animation: kv-pulse 3.2s ease-in-out infinite;
}
.kv-module:nth-child(3) .kv-led { animation-delay: .4s; }
.kv-module:nth-child(4) .kv-led { animation-delay: .8s; }
.kv-unit-brand {
  position: absolute;
  bottom: 20px; left: 0; right: 0;
  text-align: center;
  display: flex;
  justify-content: center;
}
.kv-unit-brand img { width: 26px; height: auto; opacity: .75; }
.kv-unit-floor {
  width: 70%;
  height: 40px;
  margin-top: 10px;
  background: radial-gradient(ellipse at center, rgba(var(--kv-accent-rgb), .16), transparent 70%);
  filter: blur(8px);
}

@keyframes kv-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-12px); } }
@keyframes kv-pulse { 0%,100% { opacity: .55; } 50% { opacity: 1; } }

/* ---------- Stats ---------- */
.kv-stats { border-top: 1px solid var(--kv-line); border-bottom: 1px solid var(--kv-line); }
.kv-stat {
  padding: 48px 24px;
  border-right: 1px solid var(--kv-line);
}
.kv-stat:last-child { border-right: 0; }
@media (max-width: 991.98px) {
  .kv-stat:nth-child(2) { border-right: 0; }
  .kv-stat:nth-child(-n+2) { border-bottom: 1px solid var(--kv-line); }
}
.kv-stat-value {
  font-family: var(--kv-font-display);
  font-weight: 200;
  font-size: clamp(2.2rem, 4vw, 3.4rem);
  letter-spacing: -0.03em;
  line-height: 1;
}
.kv-stat-value small { font-size: .42em; color: var(--kv-accent); margin-left: 4px; letter-spacing: 0; font-weight: 400; }
.kv-stat-label { margin-top: 12px; font-size: 13px; color: var(--kv-muted); letter-spacing: .02em; }

/* ---------- Sections ---------- */
.kv-section { padding: 140px 0; position: relative; overflow: hidden; }
.kv-section-alt { background: var(--kv-bg-alt); border-top: 1px solid var(--kv-line); border-bottom: 1px solid var(--kv-line); }
.kv-section-head { margin-bottom: 72px; max-width: 720px; }
@media (max-width: 767.98px) { .kv-section { padding: 96px 0; } .kv-section-head { margin-bottom: 48px; } }

/* ---------- Cards / Products ---------- */
.kv-card {
  position: relative;
  height: 100%;
  padding: 36px;
  border-radius: var(--kv-radius);
  background: linear-gradient(180deg, var(--kv-surface) 0%, var(--kv-bg) 100%);
  border: 1px solid var(--kv-line);
  transition: border-color .5s var(--kv-ease), transform .5s var(--kv-ease);
}
.kv-card:hover { border-color: var(--kv-line-strong); transform: translateY(-4px); }

.kv-product-featured {
  border-color: rgba(var(--kv-accent-rgb), .35);
  background: linear-gradient(180deg, #0b1316 0%, var(--kv-bg) 100%);
}
.kv-product-featured:hover { border-color: rgba(var(--kv-accent-rgb), .6); }

.kv-badge {
  position: absolute;
  top: 24px; right: 24px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--kv-accent);
  border: 1px solid rgba(var(--kv-accent-rgb), .4);
  border-radius: 999px;
  padding: 5px 12px;
}

.kv-product-visual {
  height: 220px;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  margin-bottom: 36px;
  background: radial-gradient(ellipse at 50% 100%, rgba(var(--kv-accent-rgb), .08), transparent 60%);
}
.kv-mini {
  width: 96px;
  padding: 6px;
  border-radius: 9px;
  background: linear-gradient(160deg, #1d1d20, #09090b);
  border: 1px solid rgba(255,255,255,.07);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08), 0 30px 50px -20px rgba(0,0,0,.9);
  display: flex; flex-direction: column; gap: 4px;
  padding-bottom: 22px;
}
.kv-mini i {
  display: block;
  height: 48px;
  border-radius: 5px;
  background: #0d0d0f;
  border: 1px solid rgba(255,255,255,.04);
  position: relative;
}
.kv-mini i::after {
  content: "";
  position: absolute; left: 50%; top: 10px; bottom: 10px; width: 1.5px;
  transform: translateX(-50%);
  background: var(--kv-accent);
  box-shadow: 0 0 8px rgba(var(--kv-accent-rgb), .8);
  opacity: .8;
}

.kv-product-series { font-size: 12px; letter-spacing: .22em; text-transform: uppercase; color: var(--kv-dim); margin-bottom: .5rem; }
.kv-product-name { font-family: var(--kv-font-display); font-weight: 400; font-size: 1.9rem; letter-spacing: -0.02em; margin-bottom: .75rem; }
.kv-product-desc { color: var(--kv-muted); font-size: 15px; min-height: 3.3em; }

.kv-specs { margin: 28px 0 32px; border-top: 1px solid var(--kv-line); }
.kv-specs > div { display: flex; justify-content: space-between; padding: 14px 0; border-bottom: 1px solid var(--kv-line); font-size: 14px; }
.kv-specs dt { font-weight: 300; color: var(--kv-muted); }
.kv-specs dd { margin: 0; font-weight: 400; }

/* ---------- Statement ---------- */
.kv-statement { padding: 160px 0; text-align: center; border-top: 1px solid var(--kv-line); }
.kv-statement-text {
  font-family: var(--kv-font-display);
  font-weight: 200;
  font-size: clamp(2.2rem, 5.5vw, 4.8rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin: 0;
}

/* ---------- Features ---------- */
.kv-feature {
  height: 100%;
  padding-top: 28px;
  border-top: 1px solid var(--kv-line-strong);
}
.kv-feature-num { display: block; font-size: 12px; color: var(--kv-accent); letter-spacing: .15em; margin-bottom: 40px; }
.kv-feature h3 { font-family: var(--kv-font-display); font-weight: 400; font-size: 1.35rem; letter-spacing: -0.01em; margin-bottom: .75rem; }
.kv-feature p { color: var(--kv-muted); font-size: 15px; margin: 0; }

/* ---------- Steps ---------- */
.kv-steps { list-style: none; padding: 0; margin: 0; }
.kv-steps li {
  display: flex;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--kv-line);
}
.kv-steps li:first-child { padding-top: 0; }
.kv-steps li > span { font-family: var(--kv-font-display); font-weight: 200; font-size: 2rem; color: var(--kv-dim); line-height: 1; min-width: 48px; }
.kv-steps h3 { font-family: var(--kv-font-display); font-weight: 400; font-size: 1.35rem; margin-bottom: .4rem; }
.kv-steps p { color: var(--kv-muted); margin: 0; }

/* ---------- Accordion ---------- */
.kv-accordion { --bs-accordion-bg: transparent; --bs-accordion-border-color: var(--kv-line); --bs-accordion-color: var(--kv-text); }
.kv-accordion .accordion-item { border: 0; border-bottom: 1px solid var(--kv-line); background: transparent; }
.kv-accordion .accordion-item:first-child { border-top: 1px solid var(--kv-line); }
.kv-accordion .accordion-button {
  background: transparent;
  color: var(--kv-text);
  font-family: var(--kv-font-display);
  font-size: 1.2rem;
  font-weight: 400;
  padding: 28px 0;
  box-shadow: none !important;
}
.kv-accordion .accordion-button::after {
  background-image: none;
  content: "+";
  font-family: var(--kv-font-body);
  font-weight: 200;
  font-size: 28px;
  width: auto; height: auto;
  line-height: 1;
  color: var(--kv-muted);
  transition: transform .4s var(--kv-ease);
}
.kv-accordion .accordion-button:not(.collapsed)::after { transform: rotate(45deg); color: var(--kv-accent); }
.kv-accordion .accordion-body { padding: 0 48px 28px 0; color: var(--kv-muted); }

/* ---------- Contact ---------- */
.kv-contact-list { list-style: none; padding: 0; margin: 40px 0 0; }
.kv-contact-list li { display: flex; flex-direction: column; padding: 18px 0; border-top: 1px solid var(--kv-line); }
.kv-contact-list span { font-size: 12px; letter-spacing: .18em; text-transform: uppercase; color: var(--kv-dim); margin-bottom: 4px; }
.kv-contact-list a { font-size: 1.1rem; transition: color .3s; }
.kv-contact-list a:hover { color: var(--kv-accent); }

.kv-form {
  padding: 40px;
  border-radius: var(--kv-radius);
  background: rgba(15, 15, 17, .7);
  border: 1px solid var(--kv-line);
  backdrop-filter: blur(10px);
}
@media (max-width: 575.98px) { .kv-form { padding: 24px; } }
.kv-form .form-control,
.kv-form .form-select {
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--kv-line-strong);
  border-radius: 0;
  color: var(--kv-text);
  font-weight: 300;
  padding: 14px 0;
  transition: border-color .3s;
}
.kv-form .form-control::placeholder { color: var(--kv-dim); }
.kv-form .form-select:focus,
.kv-form .form-control:focus { box-shadow: none; border-color: var(--kv-accent); background: transparent; color: var(--kv-text); }
.kv-form .form-control.is-invalid { border-color: #c56b6b; background-image: none; }
.kv-check { display: flex; gap: 12px; font-size: 13px; color: var(--kv-muted); align-items: flex-start; cursor: pointer; margin-top: 8px; }
.kv-check input { accent-color: var(--kv-accent); margin-top: 4px; }
.kv-form-status { margin: 0; font-size: 14px; color: var(--kv-accent); }

.kv-form .form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%238b8b90' stroke-linecap='round' stroke-width='1.5' d='m2 5 6 6 6-6'/%3e%3c/svg%3e");
  background-position: right 0 center;
  background-repeat: no-repeat;
  background-size: 14px 10px;
  padding-right: 24px;
}
.kv-form .form-select { color: var(--kv-dim); }
.kv-form .form-select.has-value { color: var(--kv-text); }
.kv-form .form-select option { background: var(--kv-surface); color: var(--kv-text); }
.kv-form .form-select.is-invalid { border-color: #c56b6b; }

/* ---------- Footer ---------- */
.kv-footer { padding: 72px 0 40px; border-top: 1px solid var(--kv-line); }
.kv-footer-tag { color: var(--kv-dim); font-size: 14px; margin-top: 16px; }
.kv-footer-links { display: flex; gap: 28px; flex-wrap: wrap; }
.kv-footer-links a { color: var(--kv-muted); font-size: 14px; transition: color .3s; }
.kv-footer-links a:hover { color: var(--kv-text); }
.kv-footer-copy { margin: 56px 0 0; font-size: 12px; color: var(--kv-dim); letter-spacing: .04em; }

/* ---------- Hero grid texture ---------- */
.kv-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse at 70% 50%, #000 0%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 50%, #000 0%, transparent 65%);
  pointer-events: none;
}

/* ---------- Misc ---------- */
.kv-h3 { font-family: var(--kv-font-display); font-weight: 300; font-size: clamp(1.6rem, 2.6vw, 2.2rem); line-height: 1.15; letter-spacing: -0.02em; }
.kv-note { margin: 24px 0 0; font-size: 13px; color: var(--kv-dim); }
.kv-link-muted { color: var(--kv-muted); }

/* ---------- Specs table ---------- */
.kv-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--kv-line);
  border-radius: var(--kv-radius);
  background: var(--kv-bg);
}
.kv-table { width: 100%; min-width: 680px; border-collapse: collapse; font-size: 14px; }
.kv-table th, .kv-table td { padding: 16px 24px; border-bottom: 1px solid var(--kv-line); text-align: left; white-space: nowrap; }
.kv-table tbody tr:last-child th, .kv-table tbody tr:last-child td { border-bottom: 0; }
.kv-table thead th {
  font-family: var(--kv-font-display);
  font-weight: 400;
  font-size: 1.25rem;
  padding-top: 28px; padding-bottom: 20px;
  border-bottom-color: var(--kv-line-strong);
}
.kv-table thead th:first-child { font-family: var(--kv-font-body); font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--kv-dim); vertical-align: bottom; }
.kv-table tbody th { font-weight: 300; color: var(--kv-muted); }
.kv-table td { font-weight: 400; }
.kv-table tbody tr:hover th, .kv-table tbody tr:hover td { background: rgba(255,255,255,.015); }
.kv-col-featured { background: rgba(var(--kv-accent-rgb), .035); }
.kv-table thead .kv-col-featured { color: var(--kv-accent); }

/* ---------- Certifications ---------- */
.kv-certs { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--kv-line); border: 1px solid var(--kv-line); border-radius: var(--kv-radius); overflow: hidden; }
.kv-cert { background: var(--kv-bg-alt); padding: 32px 28px; display: flex; flex-direction: column; gap: 8px; transition: background .4s; }
.kv-cert:hover { background: var(--kv-surface); }
.kv-cert strong { font-family: var(--kv-font-display); font-weight: 400; font-size: 1.35rem; letter-spacing: -0.01em; }
.kv-cert span { font-size: 13px; color: var(--kv-muted); }
@media (max-width: 575.98px) { .kv-certs { grid-template-columns: 1fr; } }

/* ---------- Partner ---------- */
.kv-audience { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: -32px 0 56px; }
.kv-audience-label { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--kv-dim); margin-right: 8px; }
.kv-tag { font-size: 13px; padding: 8px 16px; border: 1px solid var(--kv-line-strong); border-radius: 999px; color: var(--kv-text); }
.kv-benefit { padding: 32px; }
.kv-benefit-icon { display: block; color: var(--kv-accent); font-size: 18px; margin-bottom: 28px; text-shadow: 0 0 14px rgba(var(--kv-accent-rgb), .7); }
.kv-benefit h3 { font-family: var(--kv-font-display); font-weight: 400; font-size: 1.3rem; margin-bottom: .6rem; }
.kv-benefit p { color: var(--kv-muted); font-size: 15px; margin: 0; }
.kv-partner-steps { margin-top: 120px; }
@media (max-width: 767.98px) { .kv-partner-steps { margin-top: 80px; } .kv-audience { margin-top: -16px; } }

/* ---------- Reveal on scroll ---------- */
/* Hidden only when JS runs, so content is always visible to crawlers and no-JS users */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity 1s var(--kv-ease), transform 1s var(--kv-ease); }
.js .reveal.in { opacity: 1; transform: none; }

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

/* Hero H1 carries the SEO keyword but is styled as the eyebrow label */
.kv-h1 { line-height: 1.6; max-width: 34rem; }


/* ==========================================================
   Products overview & model pages
   ========================================================== */
.kv-page-hero {
  position: relative;
  padding: 150px 0 96px;
  overflow: hidden;
  border-bottom: 1px solid var(--kv-line);
}
.kv-display-sm { font-size: clamp(2.4rem, 5vw, 4.4rem); }
.kv-lead-wide { max-width: 44rem; }
.kv-h3-sm { font-family: var(--kv-font-display); font-weight: 400; font-size: 1.35rem; margin-bottom: 1.25rem; }

/* Breadcrumb */
.kv-breadcrumb ol { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; padding: 0; margin: 0 0 48px; font-size: 13px; color: var(--kv-dim); }
.kv-breadcrumb li + li::before { content: "/"; margin-right: 10px; color: var(--kv-dim); }
.kv-breadcrumb a { color: var(--kv-muted); transition: color .3s; }
.kv-breadcrumb a:hover { color: var(--kv-text); }
.kv-breadcrumb [aria-current] { color: var(--kv-text); }

/* Series */
.kv-series-nav { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 36px; }
.kv-series-nav .kv-tag { transition: border-color .3s, color .3s; }
.kv-series-nav .kv-tag:hover { border-color: var(--kv-accent); color: var(--kv-accent); }
.kv-series + .kv-series { border-top: 1px solid var(--kv-line); }

/* Model cards */
.kv-model-card { padding: 28px; display: flex; flex-direction: column; }
.kv-model-card .kv-product-visual { height: 180px; margin-bottom: 28px; }
.kv-model-card .kv-product-name { font-size: 1.6rem; }
.kv-model-card .kv-product-name a { transition: color .3s; }
.kv-model-card .kv-product-name a:hover { color: var(--kv-accent); }
.kv-model-card .kv-product-desc { min-height: 0; flex-grow: 1; }
.kv-model-card .kv-specs { margin: 20px 0 24px; }
.kv-model-card .kv-specs > div { padding: 11px 0; font-size: 13px; }
.kv-mini i { height: 34px; }

/* Key facts */
.kv-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 72px;
  border-top: 1px solid var(--kv-line);
}
.kv-fact { padding: 32px 24px 0 0; }
.kv-fact + .kv-fact { padding-left: 24px; border-left: 1px solid var(--kv-line); }
@media (max-width: 767.98px) {
  .kv-facts { grid-template-columns: repeat(2, 1fr); }
  .kv-fact:nth-child(3) { padding-left: 0; border-left: 0; }
}

/* Use cases */
.kv-uses { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--kv-line); }
.kv-uses li { position: relative; padding: 16px 0 16px 28px; border-bottom: 1px solid var(--kv-line); color: var(--kv-muted); }
.kv-uses li::before {
  content: ""; position: absolute; left: 4px; top: 50%;
  width: 7px; height: 7px; transform: translateY(-50%) rotate(45deg);
  border: 1px solid var(--kv-accent); box-shadow: 0 0 10px rgba(var(--kv-accent-rgb), .6);
}

/* Tables */
.kv-table-single { max-width: 880px; }
.kv-table-single .kv-table { min-width: 0; }
.kv-table-single tbody th { width: 45%; }
.kv-table-single th, .kv-table-single td { white-space: normal; }
.kv-table-compare .kv-table { min-width: 1180px; }
.kv-table-compare thead th a { transition: color .3s; }
.kv-table-compare thead th a:hover { color: var(--kv-accent); }
.kv-table-compare tbody th,
.kv-table-compare thead th:first-child {
  position: sticky; left: 0; z-index: 1;
  background: var(--kv-bg);
  box-shadow: 1px 0 0 var(--kv-line);
}

/* CTA band */
.kv-cta-band { padding: 110px 0; border-top: 1px solid var(--kv-line); }
.kv-cta-inner {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 32px;
  padding: 56px;
  border-radius: var(--kv-radius);
  border: 1px solid rgba(var(--kv-accent-rgb), .25);
  background: radial-gradient(ellipse at 0% 0%, rgba(var(--kv-accent-rgb), .10), transparent 60%), var(--kv-surface);
}
.kv-cta-inner .kv-h3 { margin-bottom: .75rem; }
.kv-cta-inner .kv-lead { margin: 0; }
@media (max-width: 575.98px) { .kv-cta-inner { padding: 32px 24px; } }

/* ---------- Product photos ---------- */
/* Studio shots sit on a dark vignette; feather the edges into the page background. */
.kv-product-photo,
.kv-card-photo {
  display: block;
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 14%, #000 86%, transparent 100%),
                      linear-gradient(to bottom, transparent 0, #000 6%, #000 90%, transparent 100%);
  -webkit-mask-composite: source-in;
          mask-image: linear-gradient(to right, transparent 0, #000 14%, #000 86%, transparent 100%),
                      linear-gradient(to bottom, transparent 0, #000 6%, #000 90%, transparent 100%);
          mask-composite: intersect;
}
.kv-product-photo img,
.kv-card-photo img { display: block; width: 100%; height: auto; }

.kv-photo-stage { padding: 0; }
.kv-product-photo {
  width: min(460px, 82vw);
  margin: 0 auto;
  filter: drop-shadow(0 40px 80px rgba(0, 0, 0, .6));
}
.kv-photo-stage::before {
  content: "";
  position: absolute; inset: 15% 10% 5%;
  background: radial-gradient(ellipse at center, rgba(var(--kv-accent-rgb), .14), transparent 65%);
  filter: blur(20px);
  z-index: -1;
}

.kv-product-visual .kv-card-photo { height: 100%; width: auto; }
.kv-product-visual .kv-card-photo img { height: 100%; width: auto; }
.kv-card:hover .kv-card-photo img { transform: translateY(-4px); }
.kv-card-photo img { transition: transform .6s var(--kv-ease); }

/* ---------- Product gallery ---------- */
.kv-gallery { display: flex; flex-direction: column; align-items: center; gap: 24px; }
.kv-gallery-main { display: grid; width: min(460px, 82vw); }
.kv-gallery-main > .kv-product-photo {
  grid-area: 1 / 1;
  width: 100%;
  opacity: 0;
  transition: opacity .6s var(--kv-ease);
}
.kv-gallery-main > .kv-product-photo.is-active { opacity: 1; }
.kv-gallery-thumbs { display: flex; gap: 12px; justify-content: center; }
.kv-thumb {
  width: 64px; height: 96px;
  padding: 0;
  overflow: hidden;
  border-radius: 10px;
  border: 1px solid var(--kv-line-strong);
  background: var(--kv-surface);
  opacity: .55;
  cursor: pointer;
  transition: opacity .3s, border-color .3s;
}
.kv-thumb:hover { opacity: .85; }
.kv-thumb.is-active { opacity: 1; border-color: var(--kv-accent); box-shadow: 0 0 16px rgba(var(--kv-accent-rgb), .25); }
.kv-thumb:focus-visible { outline: 2px solid var(--kv-accent); outline-offset: 3px; }
.kv-thumb-photo, .kv-thumb-photo img { display: block; width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 992px) {
  .kv-gallery { flex-direction: row; justify-content: center; }
  .kv-gallery-thumbs { flex-direction: column; order: -1; }
}
/* Gallery photos can have different aspect ratios (front, side, connection panel) */
.kv-gallery-main { align-items: center; }
.kv-product-photo.is-wide,
.kv-card-photo.is-wide {
  -webkit-mask-image: linear-gradient(to right, transparent 0, #000 5%, #000 95%, transparent 100%),
                      linear-gradient(to bottom, transparent 0, #000 8%, #000 92%, transparent 100%);
          mask-image: linear-gradient(to right, transparent 0, #000 5%, #000 95%, transparent 100%),
                      linear-gradient(to bottom, transparent 0, #000 8%, #000 92%, transparent 100%);
}

/* The badge sits above the product photo (which comes later in the DOM) and
   needs its own backdrop to stay readable over bright parts of the image. */
.kv-badge {
  z-index: 2;
  background: rgba(5, 5, 5, .72);
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
  max-width: calc(100% - 48px);
}

/* Home hero product shot */
.kv-hero-stage { display: block; }
.kv-hero-stage .kv-product-photo { width: min(460px, 78vw); margin-inline: auto; }

/* Honeypot: hidden from people, visible to bots that fill every field */
.kv-hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.kv-form-status.is-error { color: #e08a8a; }
.kv-btn[disabled] { opacity: .55; pointer-events: none; }

/* ---------- Legal pages ---------- */
.kv-legal { max-width: 46rem; }
.kv-legal-section + .kv-legal-section { margin-top: 44px; }
.kv-legal-section h2 { margin-bottom: .75rem; }
.kv-legal-section p { color: var(--kv-muted); margin: 0; }
.kv-legal-section a { color: var(--kv-text); text-decoration: underline; text-underline-offset: 3px; }
.kv-legal-section a:hover { color: var(--kv-accent); }
.kv-legal-hero { padding-bottom: 64px; }

/* ---------- Nav: language switcher stays visible on every screen ---------- */
.kv-nav-right { display: flex; align-items: center; gap: 12px; }
@media (min-width: 1200px) {
  .kv-nav-right { order: 3; gap: 16px; }
  .kv-nav .navbar-collapse { order: 2; }
}
.kv-nav .kv-nav-cta { align-self: flex-start; margin-top: 4px; }
/* 10 languages: keep the list inside the screen on small devices */
.kv-lang .dropdown-menu { max-height: min(70vh, 460px); overflow-y: auto; }