/* ==========================================================================
   KOC TRANSMISSION — Design System
   Palette: Navy (#1c2e4a) / Grey (#8a8f96) / White (#ffffff)
   Font: Satoshi
   ========================================================================== */

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

:root {
  --c-navy: #1c2e4a;
  --c-navy-light: #2a4060;
  --c-navy-dark: #111d30;
  --c-grey: #8a8f96;
  --c-grey-light: #b0b4b9;
  --c-grey-dark: #5e6268;
  --c-white: #ffffff;
  --c-off-white: #f5f6f8;
  --c-bg: #ffffff;
  --c-bg-alt: #f5f6f8;
  --c-surface: #ffffff;
  --c-text: #1c2e4a;
  --c-text-muted: #6b7280;
  --c-accent: #1c2e4a;
  --c-accent-light: #2a4060;
  --c-border: #e2e5e9;
  --c-border-light: #eef0f3;

  --fs-xs: clamp(0.7rem, 0.65rem + 0.25vw, 0.8rem);
  --fs-sm: clamp(0.8rem, 0.75rem + 0.3vw, 0.9rem);
  --fs-base: clamp(0.95rem, 0.9rem + 0.3vw, 1.05rem);
  --fs-md: clamp(1.1rem, 1rem + 0.5vw, 1.3rem);
  --fs-lg: clamp(1.5rem, 1.2rem + 1.5vw, 2.2rem);
  --fs-xl: clamp(2rem, 1.5rem + 2.5vw, 3.2rem);
  --fs-xxl: clamp(2.5rem, 1.8rem + 3.5vw, 4.5rem);

  --sp-xs: 0.5rem;
  --sp-sm: 1rem;
  --sp-md: 1.5rem;
  --sp-lg: 3rem;
  --sp-xl: 5rem;
  --sp-xxl: 8rem;

  --ease-out: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --max-w: 1280px;
  --nav-h: 150px;
  --radius: 12px;
  --radius-sm: 8px;
}

html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }

body {
  font-family: 'Satoshi', system-ui, -apple-system, sans-serif;
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--c-text);
  background: var(--c-bg);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; transition: color 0.3s var(--ease-out); }
img { max-width: 100%; display: block; }
::selection { background: var(--c-navy); color: var(--c-white); }

.container { width: 100%; max-width: var(--max-w); margin: 0 auto; padding: 0 var(--sp-md); }
@media (min-width: 768px) { .container { padding: 0 var(--sp-lg); } }

/* --- SECTION --- */
.section { padding: var(--sp-xxl) 0; position: relative; }

.section__label {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-grey);
  margin-bottom: var(--sp-sm);
}

.section__title {
  font-size: var(--fs-xl);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--c-navy);
  margin-bottom: var(--sp-md);
}

.section__desc {
  font-size: var(--fs-md);
  color: var(--c-text-muted);
  max-width: 540px;
  line-height: 1.5;
}

.section__header { margin-bottom: var(--sp-xl); }

/* --- BUTTONS --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  padding: 0.85rem 1.8rem;
  border-radius: 100px;
  border: none;
  cursor: pointer;
  transition: all 0.35s var(--ease-out);
  white-space: nowrap;
}

.btn--primary { background: var(--c-navy); color: var(--c-white); }
.btn--primary:hover {
  background: var(--c-navy-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(28, 46, 74, 0.25);
}

.btn--ghost { background: transparent; color: var(--c-navy); border: 1.5px solid var(--c-border); }
.btn--ghost:hover { border-color: var(--c-navy); background: var(--c-navy); color: var(--c-white); }
.btn--sm { padding: 0.55rem 1.3rem; font-size: var(--fs-xs); }
.btn--full { width: 100%; }

/* ==========================================================================
   NAV
   ========================================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: all 0.4s var(--ease-out);
  background: transparent;
}

.nav--scrolled {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--c-border-light);
  box-shadow: 0 4px 18px rgba(28, 46, 74, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--sp-md);
}
@media (min-width: 768px) { .nav__inner { padding: 0 var(--sp-lg); } }

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  z-index: 101;
}

.nav__logo-img {
  height: 150px;
  width: auto;
}

.footer__brand .nav__logo-img {
  height: 130px;
}

.nav__logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--c-navy);
  color: var(--c-white);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
}

.nav__logo-text {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--c-navy);
  letter-spacing: -0.01em;
}

.nav__links { display: none; gap: 2rem; }
@media (min-width: 900px) { .nav__links { display: flex; } }

.nav__links a {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, 0.92);
  letter-spacing: 0.01em;
  position: relative;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.15);
}
.nav__links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 1.5px;
  background: currentColor;
  transition: width 0.3s var(--ease-out);
}
.nav__links a:hover { color: var(--c-white); }
.nav__links a:hover::after { width: 100%; }
.nav--scrolled .nav__links a {
  color: var(--c-navy);
  text-shadow: none;
}
.nav--scrolled .nav__links a:hover { color: var(--c-navy-dark); }

.nav__actions { display: flex; align-items: center; gap: 0.75rem; z-index: 101; }

.lang-toggle {
  display: flex; align-items: center; gap: 2px;
  background: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  border-radius: 100px;
  padding: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-xs);
  font-weight: 600;
}
.lang-toggle span {
  display: flex; align-items: center; justify-content: center;
  padding: 4px 10px;
  border-radius: 100px;
  transition: all 0.3s var(--ease-out);
}
.lang-toggle__active { background: var(--c-navy); color: var(--c-white); }
.lang-toggle__inactive { color: var(--c-text-muted); }

.nav__burger {
  display: flex; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
@media (min-width: 900px) { .nav__burger { display: none; } }
.nav__burger span {
  display: block; width: 22px; height: 2px;
  background: var(--c-navy); border-radius: 2px;
  transition: all 0.3s var(--ease-out); transform-origin: center;
}
.nav__burger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav__burger.active span:nth-child(2) { opacity: 0; }
.nav__burger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

.nav__actions .btn { display: none; }
@media (min-width: 900px) { .nav__actions .btn { display: inline-flex; } }

.nav__links.mobile-open {
  display: flex; flex-direction: column;
  position: fixed; top: 0; left: 0; right: 0; bottom: 0;
  background: var(--c-white); z-index: 100;
  align-items: center; justify-content: center; gap: 2.5rem;
}
.nav__links.mobile-open a { font-size: var(--fs-lg); font-weight: 700; color: var(--c-navy); text-shadow: none; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero {
  min-height: 100dvh;
  display: flex;
  align-items: center;
  position: relative;
  padding: calc(var(--nav-h) + var(--sp-lg)) var(--sp-md) var(--sp-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--c-navy-dark) 0%, var(--c-navy) 50%, var(--c-navy-light) 100%);
  background-size: cover;
  background-position: center;
  color: var(--c-white);
}

.hero[style*="background-image"] .hero__bg {
  background: linear-gradient(135deg, rgba(17,29,48,0.88) 0%, rgba(28,46,74,0.82) 50%, rgba(42,64,96,0.78) 100%);
}

.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 70% 50% at 80% 30%, rgba(255,255,255,0.04) 0%, transparent 70%),
    radial-gradient(ellipse 50% 40% at 10% 80%, rgba(138,143,150,0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero__bg::before {
  content: '';
  position: absolute;
  top: 10%; right: -5%;
  width: 400px; height: 400px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.06);
  animation: heroOrb 20s linear infinite;
}
.hero__bg::after {
  content: '';
  position: absolute;
  bottom: 15%; left: 5%;
  width: 250px; height: 250px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.04);
  animation: heroOrb 15s linear infinite reverse;
}
@keyframes heroOrb { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }

.hero__content { position: relative; max-width: 720px; z-index: 1; margin: 0 auto; }
@media (min-width: 768px) {
  .hero { padding-left: var(--sp-lg); padding-right: var(--sp-lg); }
  .hero__content { margin: 0; margin-left: 5%; }
}

.hero__label { margin-bottom: var(--sp-md); }
.hero__label span {
  display: inline-block;
  font-size: var(--fs-xs);
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 100px;
}

.hero__title {
  font-size: var(--fs-xxl);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -0.03em;
  color: var(--c-white);
  margin-bottom: var(--sp-md);
}
.hero__title--accent { color: var(--c-grey-light); }

.hero__sub {
  font-size: var(--fs-md);
  color: rgba(255,255,255,0.7);
  line-height: 1.6;
  max-width: 520px;
  margin-bottom: var(--sp-lg);
}

.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-sm); margin-bottom: var(--sp-xl); }
.hero__actions .btn--primary { background: var(--c-white); color: var(--c-navy); }
.hero__actions .btn--primary:hover { background: var(--c-off-white); box-shadow: 0 8px 24px rgba(0,0,0,0.2); }
.hero__actions .btn--ghost { border-color: rgba(255,255,255,0.3); color: var(--c-white); }
.hero__actions .btn--ghost:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.5); color: var(--c-white); }

.hero__stats {
  display: flex;
  gap: var(--sp-lg);
  padding-top: var(--sp-lg);
  border-top: 1px solid rgba(255,255,255,0.12);
}
.hero__stat { display: flex; flex-direction: column; }
.hero__stat-row { display: flex; align-items: baseline; }
.hero__stat-num { font-size: var(--fs-lg); font-weight: 900; color: var(--c-white); line-height: 1; }
.hero__stat-plus { font-size: var(--fs-lg); font-weight: 900; color: var(--c-grey-light); line-height: 1; }
.hero__stat-label { font-size: var(--fs-xs); color: rgba(255,255,255,0.5); margin-top: 4px; }

.hero__scroll {
  position: absolute;
  bottom: 2rem; right: 2rem;
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}
@media (min-width: 768px) { .hero__scroll { display: flex; } }
.hero__scroll span {
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  writing-mode: vertical-rl;
}
.hero__scroll-line {
  width: 1px; height: 60px;
  background: rgba(255,255,255,0.15);
  position: relative; overflow: hidden;
}
.hero__scroll-line::after {
  content: '';
  position: absolute; top: -100%; left: 0;
  width: 100%; height: 40%;
  background: var(--c-white);
  animation: scrollLine 2s var(--ease-out) infinite;
}
@keyframes scrollLine { 0% { top: -40%; } 100% { top: 100%; } }

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about { background: var(--c-bg-alt); }
.about__grid { display: grid; gap: var(--sp-xl); }
@media (min-width: 768px) {
  .about__grid { grid-template-columns: 1fr 1.3fr; gap: var(--sp-xxl); align-items: start; }
}
.about__left .section__title { position: sticky; top: calc(var(--nav-h) + var(--sp-lg)); }
/* About images */
.about__images {
  margin-top: var(--sp-lg);
}
.about__img {
  width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}
.about__img--full { height: 300px; }
@media (max-width: 600px) {
  .about__img--full { height: 200px; }
}

.about__lead { font-size: var(--fs-md); color: var(--c-text); line-height: 1.6; margin-bottom: var(--sp-md); font-weight: 500; }
.about__text { font-size: var(--fs-base); color: var(--c-text-muted); line-height: 1.7; margin-bottom: var(--sp-lg); }

.about__highlights {
  display: flex; flex-wrap: wrap; gap: var(--sp-md);
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--c-border);
}
.about__highlight { display: flex; flex-direction: column; min-width: 120px; }
.about__highlight-num { font-size: var(--fs-lg); font-weight: 900; color: var(--c-navy); line-height: 1; }
.about__highlight-label { font-size: var(--fs-sm); font-weight: 700; color: var(--c-navy); }
.about__highlight-sub { font-size: var(--fs-xs); color: var(--c-text-muted); margin-top: 2px; }

/* ==========================================================================
   PRODUCTS
   ========================================================================== */
.products__grid { display: grid; gap: var(--sp-sm); }
@media (min-width: 600px) { .products__grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) {
  .products__grid { grid-template-columns: repeat(2, 1fr); }
  .product-card--featured { grid-row: span 2; }
}

.product-card {
  position: relative;
  display: flex; flex-direction: column;
  border-radius: var(--radius);
  transition: all 0.4s var(--ease-out);
  overflow: hidden;
  cursor: pointer;
  min-height: 320px;
  border: none;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 20px 60px rgba(28, 46, 74, 0.2);
}

.product-card__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s var(--ease-out);
  z-index: 0;
}
.product-card:hover .product-card__img { transform: scale(1.08); }

.product-card__body {
  position: relative;
  z-index: 1;
  padding: var(--sp-lg);
  display: flex;
  flex-direction: column;
  flex: 1;
  justify-content: flex-end;
  background: linear-gradient(0deg, rgba(17,29,48,0.92) 0%, rgba(17,29,48,0.6) 50%, rgba(17,29,48,0.15) 100%);
}

.product-card__index { font-size: var(--fs-xs); font-weight: 700; color: rgba(255,255,255,0.5); margin-bottom: var(--sp-xs); }
.product-card__title { font-size: var(--fs-md); font-weight: 700; color: var(--c-white); margin-bottom: var(--sp-xs); line-height: 1.2; }
.product-card__desc { font-size: var(--fs-sm); color: rgba(255,255,255,0.7); line-height: 1.5; }
.product-card__link {
  display: inline-block; margin-top: var(--sp-sm);
  font-size: var(--fs-xs); font-weight: 600;
  color: var(--c-white); letter-spacing: 0.02em;
  transition: letter-spacing 0.3s var(--ease-out);
  opacity: 0.8;
}
.product-card:hover .product-card__link { letter-spacing: 0.06em; opacity: 1; }

/* Featured card - taller */
.product-card--featured { min-height: 400px; }
@media (min-width: 1000px) { .product-card--featured { grid-row: span 2; min-height: auto; } }

/* Tool card (no image) */
.product-card--tool {
  background: var(--c-bg-alt);
  border: 2px dashed var(--c-border);
  min-height: 200px;
}
.product-card--tool .product-card__body {
  background: none;
  justify-content: center;
}
.product-card--tool .product-card__index { color: var(--c-text-muted); }
.product-card--tool .product-card__title { color: var(--c-navy); }
.product-card--tool .product-card__desc { color: var(--c-text-muted); }
.product-card--tool .product-card__link { color: var(--c-navy); }

/* ==========================================================================
   PARTNERS
   ========================================================================== */
.partners { background: var(--c-white); padding: var(--sp-xl) 0; }
.partners .section__header { text-align: center; }
.partners .section__title { margin: 0 auto var(--sp-md); }

.partners__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--sp-md);
  align-items: center;
}
@media (max-width: 768px) { .partners__grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 480px) { .partners__grid { grid-template-columns: repeat(2, 1fr); } }

.partners__item {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--sp-md);
  background: var(--c-bg-alt);
  border-radius: var(--radius-sm);
  border: 1px solid var(--c-border-light);
  transition: all 0.3s var(--ease-out);
  min-height: 80px;
}
.partners__item:hover {
  border-color: var(--c-border);
  box-shadow: 0 4px 16px rgba(28, 46, 74, 0.06);
}
.partners__item img {
  max-height: 50px;
  max-width: 120px;
  width: auto;
  object-fit: contain;
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all 0.3s var(--ease-out);
}
.partners__item:hover img {
  filter: grayscale(0%);
  opacity: 1;
}

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services { background: var(--c-bg-alt); }
.services__list { display: flex; flex-direction: column; }

.service {
  display: flex; gap: var(--sp-md);
  padding: var(--sp-lg) 0;
  border-bottom: 1px solid var(--c-border-light);
  transition: all 0.3s var(--ease-out);
}
.service:first-child { border-top: 1px solid var(--c-border-light); }
.service:hover { padding-left: var(--sp-sm); }

.service__num { font-size: var(--fs-xs); font-weight: 700; color: var(--c-grey); min-width: 32px; padding-top: 4px; }
.service__content { flex: 1; }
.service__title { font-size: var(--fs-md); font-weight: 700; color: var(--c-navy); margin-bottom: 0.35rem; }
.service__desc { font-size: var(--fs-sm); color: var(--c-text-muted); line-height: 1.6; max-width: 600px; }
@media (min-width: 768px) {
  .service { gap: var(--sp-lg); }
  .service__num { font-size: var(--fs-sm); min-width: 48px; }
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact__grid { display: grid; gap: var(--sp-xl); }
@media (min-width: 768px) { .contact__grid { grid-template-columns: 1fr 1fr; gap: var(--sp-xxl); } }

.contact__text { font-size: var(--fs-base); color: var(--c-text-muted); line-height: 1.7; margin-bottom: var(--sp-lg); }
.contact__details { display: flex; flex-direction: column; gap: var(--sp-md); }
.contact__detail { display: flex; flex-direction: column; gap: 2px; }
.contact__detail-label {
  font-size: var(--fs-xs); font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--c-grey); margin-bottom: 4px;
}
.contact__detail a, .contact__detail p { font-size: var(--fs-sm); color: var(--c-text-muted); line-height: 1.6; }
.contact__detail a:hover { color: var(--c-navy); }

.contact__form {
  background: var(--c-bg-alt);
  padding: var(--sp-lg);
  border: 1px solid var(--c-border-light);
  border-radius: var(--radius);
}
.form__group { margin-bottom: var(--sp-md); }
.form__group label { display: block; font-size: var(--fs-xs); font-weight: 600; color: var(--c-text); margin-bottom: 6px; }
.form__group input, .form__group textarea {
  width: 100%; font-family: inherit; font-size: var(--fs-sm);
  padding: 0.75rem 1rem;
  border: 1px solid var(--c-border);
  border-radius: var(--radius-sm);
  background: var(--c-white);
  color: var(--c-text);
  transition: border-color 0.3s var(--ease-out), box-shadow 0.3s var(--ease-out);
  outline: none;
}
.form__group input:focus, .form__group textarea:focus {
  border-color: var(--c-navy);
  box-shadow: 0 0 0 3px rgba(28, 46, 74, 0.08);
}
.form__group textarea { resize: vertical; min-height: 120px; }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background: var(--c-navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--sp-xl) 0 var(--sp-lg);
}
.footer__grid { display: grid; gap: var(--sp-lg); margin-bottom: var(--sp-xl); }
@media (min-width: 768px) { .footer__grid { grid-template-columns: 1.5fr 1fr 1fr 1.2fr; } }

.footer__brand .nav__logo-mark { margin-bottom: var(--sp-sm); background: rgba(255,255,255,0.1); }
.footer__brand .nav__logo-img { margin-bottom: var(--sp-sm); filter: brightness(0) invert(1); }
.footer__tagline { font-size: var(--fs-sm); line-height: 1.6; max-width: 260px; }

.footer__col { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__heading { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(255,255,255,0.35); margin-bottom: 0.5rem; }
.footer__col a { font-size: var(--fs-sm); color: rgba(255,255,255,0.55); transition: color 0.3s var(--ease-out); }
.footer__col a:hover { color: var(--c-white); }

.footer__bottom { padding-top: var(--sp-lg); border-top: 1px solid rgba(255,255,255,0.06); }
.footer__bottom p { font-size: var(--fs-xs); color: rgba(255,255,255,0.3); }

/* ==========================================================================
   WHATSAPP FAB
   ========================================================================== */
.whatsapp-fab {
  position: fixed; bottom: 1.5rem; right: 1.5rem;
  z-index: 90;
  width: 56px; height: 56px;
  display: flex; align-items: center; justify-content: center;
  background: #25d366; color: #fff;
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(37, 211, 102, 0.35);
  transition: all 0.35s var(--ease-out);
}
.whatsapp-fab:hover { transform: translateY(-3px) scale(1.05); box-shadow: 0 8px 28px rgba(37, 211, 102, 0.45); }

/* ==========================================================================
   SCROLL TO TOP
   ========================================================================== */
.scroll-top {
  position: fixed;
  bottom: calc(1.5rem + 56px + 0.75rem);
  right: 1.5rem;
  z-index: 91;
  width: 46px; height: 46px;
  display: flex; align-items: center; justify-content: center;
  background: var(--c-navy);
  color: var(--c-white);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity 0.3s var(--ease-out), transform 0.3s var(--ease-out), background-color 0.25s var(--ease-out), visibility 0.3s;
  box-shadow: 0 4px 16px rgba(28, 46, 74, 0.25);
}
.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.scroll-top:hover {
  background: var(--c-navy-light);
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(28, 46, 74, 0.32);
}
.scroll-top:focus-visible {
  outline: 2px solid var(--c-navy);
  outline-offset: 3px;
}
.scroll-top svg { width: 20px; height: 20px; }
@media (max-width: 600px) {
  .scroll-top { width: 42px; height: 42px; bottom: calc(1.5rem + 56px + 0.5rem); right: 1.5rem; }
}

/* ==========================================================================
   REVEAL
   ========================================================================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
[data-reveal].revealed { opacity: 1; transform: translateY(0); }
[data-reveal]:nth-child(2) { transition-delay: 0.1s; }
[data-reveal]:nth-child(3) { transition-delay: 0.2s; }
[data-reveal]:nth-child(4) { transition-delay: 0.3s; }
[data-reveal]:nth-child(5) { transition-delay: 0.15s; }
[data-reveal]:nth-child(6) { transition-delay: 0.25s; }
[data-reveal]:nth-child(7) { transition-delay: 0.35s; }
[data-reveal]:nth-child(8) { transition-delay: 0.45s; }

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 600px) {
  .hero__stats { flex-direction: column; gap: var(--sp-md); }
  .hero__stats .hero__stat { flex-direction: row; align-items: baseline; gap: var(--sp-xs); }
  .product-card { padding: var(--sp-md); }
  .contact__form { padding: var(--sp-md); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}