/* =================================================================
   ATBIO × Medident Trade GmbH — Landing page styles
   Premium medical-technology aesthetic, Anthropic-inspired.
   Structure:
     1.  Design tokens
     2.  Reset & base
     3.  Typography
     4.  Layout primitives (container, section, eyebrow)
     5.  Buttons
     6.  Reveal / animation utilities
     7.  Preloader
     8.  Navigation + mobile menu
     9.  Hero
     10. Marquee
     11. About
     12. Why (features)
     13. Stats / counters
     14. Products
     15. Partner (dark)
     16. CTA
     17. Contact
     18. Footer
     19. Back-to-top
     20. Responsive
     21. Reduced motion
   ================================================================= */

/* ---------- 1. Design tokens ---------- */
:root {
  /* Warm ivory canvas */
  --canvas:        #f7f4ee;
  --canvas-alt:    #f1ece2;
  --canvas-deep:   #e9e2d4;
  --ink:           #16201b;
  --ink-soft:      #45524b;
  --ink-faint:     #828d86;
  --line:          rgba(22, 32, 27, 0.12);
  --line-soft:     rgba(22, 32, 27, 0.07);

  /* Accent — refined medical teal / bio-green */
  --accent:        #2f8f83;
  --accent-deep:   #1f6b62;
  --accent-bright: #4fb89f;
  --accent-tint:   rgba(47, 143, 131, 0.11);
  --accent-glow:   rgba(79, 184, 159, 0.30);

  /* Dark sections */
  --night:         #0f1714;
  --night-soft:    #18221e;
  --night-card:    rgba(255, 255, 255, 0.045);
  --on-night:      #f1f5f2;
  --on-night-dim:  rgba(241, 245, 242, 0.66);

  /* Type */
  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Rhythm */
  --container: 1180px;
  --gutter: clamp(1.25rem, 4vw, 3rem);
  --section-y: clamp(3.75rem, 8vw, 7rem);
  --radius: 18px;
  --radius-lg: 28px;
  --radius-sm: 12px;

  --shadow-sm: 0 1px 2px rgba(22,32,27,.04), 0 6px 18px rgba(22,32,27,.05);
  --shadow-md: 0 4px 12px rgba(22,32,27,.06), 0 18px 40px rgba(22,32,27,.08);
  --shadow-lg: 0 12px 30px rgba(22,32,27,.10), 0 40px 80px rgba(22,32,27,.12);

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- 2. Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

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

body {
  font-family: var(--font-body);
  background: var(--canvas);
  color: var(--ink);
  line-height: 1.65;
  font-weight: 400;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img, video, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul, ol { list-style: none; padding: 0; }
address { font-style: normal; }

:focus-visible {
  outline: 2.5px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: 1rem; top: -64px;
  background: var(--ink);
  color: var(--canvas);
  padding: 0.65rem 1.1rem;
  border-radius: 10px;
  z-index: 3000;
  transition: top 0.25s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- 3. Typography ---------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--ink);
}
em { font-style: italic; }
strong { font-weight: 600; }

/* ---------- 4. Layout primitives ---------- */
.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: var(--section-y); }

.section__head {
  max-width: 720px;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}
.section__title {
  font-size: clamp(1.9rem, 4.4vw, 3rem);
  margin-top: 0.9rem;
}
.section__title--light { color: var(--on-night); }
.section__lead {
  margin-top: 1.15rem;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--ink-soft);
  max-width: 60ch;
}
.section__lead--light { color: var(--on-night-dim); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-deep);
}
.eyebrow--light { color: var(--accent-bright); }
.eyebrow__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-tint);
}
.eyebrow--light .eyebrow__dot { background: var(--accent-bright); box-shadow: 0 0 0 4px rgba(79,184,159,.18); }

/* ---------- 5. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  font-size: 0.98rem;
  padding: 0.78rem 1.4rem;
  border-radius: 999px;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), background .25s var(--ease), color .25s var(--ease);
  white-space: nowrap;
  will-change: transform;
}
.btn svg { transition: transform .35s var(--ease); }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--solid {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 16px rgba(47,143,131,.28);
}
.btn--solid:hover { background: var(--accent-deep); box-shadow: 0 10px 26px rgba(47,143,131,.36); }
.btn--solid:hover svg { transform: translate(2px, -2px); }

.btn--ghost {
  background: transparent;
  color: var(--ink);
  box-shadow: inset 0 0 0 1.5px var(--line);
}
.btn--ghost:hover { box-shadow: inset 0 0 0 1.5px var(--accent); color: var(--accent-deep); }

.btn--light {
  background: var(--canvas);
  color: var(--ink);
  box-shadow: 0 8px 24px rgba(0,0,0,.22);
}
.btn--light:hover { background: #fff; }
.btn--light:hover svg { transform: translate(2px, -2px); }

.btn--sm { padding: 0.55rem 1.05rem; font-size: 0.9rem; }
.btn--lg { padding: 0.92rem 1.7rem; font-size: 1.02rem; }
.btn--xl { padding: 1.05rem 2.1rem; font-size: 1.08rem; }

/* ---------- 6. Reveal utilities ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
  transition-delay: calc(var(--reveal-delay, 0) * 90ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ---------- 7. Preloader ---------- */
.preloader {
  position: fixed; inset: 0;
  z-index: 4000;
  display: grid; place-items: center;
  background: var(--canvas);
  transition: opacity .6s var(--ease), visibility .6s var(--ease);
}
.preloader.is-done { opacity: 0; visibility: hidden; }
.preloader__inner { display: grid; justify-items: center; gap: 1.1rem; }
.preloader__mark {
  font-family: var(--font-display);
  font-size: 1.9rem;
  letter-spacing: 0.18em;
  color: var(--ink);
}
.preloader__bar {
  width: 150px; height: 3px;
  background: var(--line);
  border-radius: 99px;
  overflow: hidden;
}
.preloader__fill {
  display: block; height: 100%; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  border-radius: 99px;
  animation: load 1.15s var(--ease) forwards;
}
@keyframes load { to { width: 100%; } }

/* ---------- 8. Navigation ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background .35s var(--ease), box-shadow .35s var(--ease), backdrop-filter .35s var(--ease);
}
.nav__inner {
  max-width: var(--container);
  margin-inline: auto;
  padding: 1.05rem var(--gutter);
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem;
}
.nav.is-scrolled {
  background: rgba(247, 244, 238, 0.82);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  box-shadow: 0 1px 0 var(--line-soft), 0 8px 30px rgba(22,32,27,.05);
}
.nav.is-scrolled .nav__inner { padding-block: 0.7rem; }

.nav__brand { display: flex; align-items: center; gap: 0.55rem; }
.nav__brand-mark { color: var(--accent); display: grid; place-items: center; }
.nav__brand-text {
  font-family: var(--font-display);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--ink);
}
.nav__brand-sub {
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
  padding-left: 0.55rem;
  margin-left: 0.15rem;
  border-left: 1px solid var(--line);
}

.nav__links { display: flex; gap: 2rem; }
.nav__links a {
  font-size: 0.94rem;
  color: var(--ink-soft);
  position: relative;
  padding: 0.2rem 0;
  transition: color .25s var(--ease);
}
.nav__links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px;
  width: 100%; height: 1.5px; background: var(--accent);
  transform: scaleX(0); transform-origin: left;
  transition: transform .35s var(--ease);
}
.nav__links a:hover { color: var(--ink); }
.nav__links a:hover::after { transform: scaleX(1); }

.nav__actions { display: flex; align-items: center; gap: 0.85rem; }

.nav__toggle {
  display: none;
  width: 42px; height: 42px;
  border-radius: 12px;
  flex-direction: column; align-items: center; justify-content: center;
  gap: 5px;
  box-shadow: inset 0 0 0 1.5px var(--line);
}
.nav__toggle span {
  width: 18px; height: 1.8px;
  background: var(--ink); border-radius: 2px;
  transition: transform .35s var(--ease), opacity .25s var(--ease);
}
.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.8px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.8px) rotate(-45deg); }

/* Mobile menu */
.mobile-menu {
  position: fixed; inset: 0 0 auto 0; top: 0;
  padding: 5.5rem var(--gutter) 2rem;
  background: rgba(247, 244, 238, 0.97);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  transform: translateY(-100%);
  transition: transform .45s var(--ease);
  z-index: 999;
  box-shadow: 0 20px 50px rgba(22,32,27,.12);
}
.mobile-menu.is-open { transform: translateY(0); }
.mobile-menu__nav { display: grid; gap: 0.4rem; }
.mobile-menu__nav a {
  font-size: 1.25rem;
  font-family: var(--font-display);
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line-soft);
}
.mobile-menu__nav .btn { margin-top: 1.1rem; justify-content: center; }

/* ---------- 9. Hero ---------- */
.hero {
  position: relative;
  padding-top: clamp(7rem, 13vw, 10rem);
  padding-bottom: clamp(3rem, 7vw, 5rem);
  overflow: hidden;
}
.hero__bg {
  position: absolute; inset: 0;
  background:
    radial-gradient(60% 50% at 80% 0%, var(--accent-glow), transparent 70%),
    radial-gradient(50% 45% at 10% 20%, rgba(47,143,131,.10), transparent 70%),
    linear-gradient(180deg, var(--canvas-alt), var(--canvas));
  z-index: -1;
}
.hero__inner {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
}
.hero__title {
  font-size: clamp(2.5rem, 6vw, 4.3rem);
  margin-top: 1.3rem;
  letter-spacing: -0.025em;
}
.hero__title em { color: var(--accent-deep); }
.hero__lead {
  margin-top: 1.5rem;
  font-size: clamp(1.08rem, 1.7vw, 1.26rem);
  color: var(--ink-soft);
  max-width: 38ch;
}
.hero__actions { display: flex; flex-wrap: wrap; gap: 0.85rem; margin-top: 2rem; }

.hero__trust {
  display: flex; flex-wrap: wrap;
  gap: clamp(1.25rem, 3vw, 2.5rem);
  margin-top: 2.75rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
}
.hero__trust li { display: grid; gap: 0.1rem; }
.hero__trust strong {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  color: var(--ink);
}
.hero__trust span { font-size: 0.85rem; color: var(--ink-faint); }

/* Hero visual */
.hero__visual { position: relative; display: grid; place-items: center; }
.hero__orb {
  position: relative;
  width: min(100%, 460px);
  aspect-ratio: 1;
  display: grid; place-items: center;
}
.hero__orb::before {
  content: ""; position: absolute; inset: 8%;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 35%, rgba(255,255,255,.9), rgba(241,236,226,.4) 60%, transparent 75%);
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,.6);
}
.hero__svg { position: relative; width: 100%; height: auto; }
.hero__rings { animation: spin 60s linear infinite; transform-origin: 240px 220px; }
.hero__nodes circle { animation: pulse 4s var(--ease) infinite; }
.hero__nodes circle:nth-child(3) { animation-delay: .6s; }
.hero__nodes circle:nth-child(4) { animation-delay: 1.1s; }
.hero__nodes circle:nth-child(5) { animation-delay: 1.6s; }
.hero__tooth { animation: float 6s var(--ease) infinite; transform-origin: center; }

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .55; } }
@keyframes float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }

.hero__chip {
  position: absolute;
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 0.95rem;
  background: rgba(255,255,255,.72);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,.7);
  border-radius: 14px;
  box-shadow: var(--shadow-md);
  font-size: 0.86rem;
  font-weight: 500;
  color: var(--ink);
  animation: float 7s var(--ease) infinite;
}
.hero__chip-ico { color: var(--accent); display: grid; place-items: center; }
.hero__chip--a { top: 12%; left: -4%; }
.hero__chip--b { bottom: 14%; right: -2%; animation-delay: 1.5s; }

/* ---------- 10. Marquee ---------- */
.marquee {
  display: flex;
  overflow: hidden;
  border-block: 1px solid var(--line);
  background: var(--canvas-alt);
  padding-block: 1.1rem;
  user-select: none;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 8%, #000 92%, transparent);
}
/* Each group is at least viewport-wide (min-width:100%) so the strip never
   leaves a gap on ultra-wide screens; both groups are identical and equal in
   width, so translating by one full group width (-100%) loops seamlessly. */
.marquee__group {
  flex: 0 0 auto;
  min-width: 100%;
  display: flex; align-items: center;
  justify-content: space-around;
  gap: clamp(1rem, 3vw, 2.75rem);
  padding-inline: clamp(0.5rem, 1.5vw, 1.4rem);
  white-space: nowrap;
  font-family: var(--font-display);
  font-size: 1.15rem;
  color: var(--ink-soft);
  animation: marquee 34s linear infinite;
}
.marquee__dot { color: var(--accent); }
@keyframes marquee { from { transform: translateX(0); } to { transform: translateX(-100%); } }

/* ---------- 11. About ---------- */
.about { background: var(--canvas); }
.about__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}
.about__card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.about__card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent-tint); }
.about__ico {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: var(--accent-tint);
  color: var(--accent-deep);
  margin-bottom: 1.1rem;
}
.about__card h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.about__card p { font-size: 0.96rem; color: var(--ink-soft); }

/* ---------- 12. Why (features) ---------- */
.why { background: linear-gradient(180deg, var(--canvas), var(--canvas-alt)); }
.why__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.6rem);
}
.feature {
  position: relative;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: 2rem 1.85rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease);
}
.feature::after {
  content: ""; position: absolute; left: 0; top: 0; height: 3px; width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-bright));
  transition: width .5s var(--ease);
}
.feature:hover { transform: translateY(-5px); box-shadow: var(--shadow-md); }
.feature:hover::after { width: 100%; }
.feature__ico {
  width: 54px; height: 54px;
  display: grid; place-items: center;
  border-radius: 15px;
  background: var(--accent-tint);
  color: var(--accent-deep);
  margin-bottom: 1.3rem;
  transition: transform .4s var(--ease);
}
.feature:hover .feature__ico { transform: scale(1.06) rotate(-3deg); }
.feature h3 { font-size: 1.4rem; margin-bottom: 0.65rem; }
.feature p { color: var(--ink-soft); font-size: 1rem; }

/* ---------- 13. Stats ---------- */
.stats {
  background: var(--night);
  color: var(--on-night);
  padding-block: clamp(3rem, 6vw, 4.5rem);
  position: relative;
  overflow: hidden;
}
.stats::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(50% 120% at 50% 0%, rgba(79,184,159,.16), transparent 65%);
}
.stats__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  text-align: center;
}
.stat { display: grid; gap: 0.4rem; }
.stat__num {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.4rem);
  font-weight: 500;
  line-height: 1;
  color: var(--on-night);
  font-variant-numeric: tabular-nums;
}
.stat__label {
  font-size: 0.92rem;
  color: var(--on-night-dim);
  letter-spacing: 0.02em;
}
.stat + .stat { position: relative; }
.stat:not(:first-child)::before {
  content: ""; position: absolute; left: 0; top: 15%; height: 70%;
  width: 1px; background: rgba(255,255,255,.1);
}

/* ---------- 14. Products ---------- */
.products { background: var(--canvas-alt); }
.products__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(0.9rem, 1.8vw, 1.4rem);
}
.product {
  display: flex; flex-direction: column;
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
}
.product:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); border-color: var(--accent-tint); }

.product__media {
  position: relative;
  aspect-ratio: 16 / 11;
  background: linear-gradient(160deg, #fff, var(--canvas-deep));
  overflow: hidden;
}
.product__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s var(--ease);
}
.product:hover .product__media img { transform: scale(1.05); }

.product__ico {
  position: absolute;
  left: 0.9rem; bottom: 0.9rem;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: 13px;
  background: rgba(255, 255, 255, 0.82);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.7);
  color: var(--accent-deep);
  box-shadow: var(--shadow-sm);
  transition: background .35s var(--ease), color .35s var(--ease);
}
.product:hover .product__ico { background: var(--accent); color: #fff; border-color: var(--accent); }

.product__body {
  display: flex; flex-direction: column;
  flex: 1;
  padding: 1.4rem 1.5rem 1.6rem;
}
.product__body h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.product__body p { color: var(--ink-soft); font-size: 0.95rem; flex: 1; }
.product__link {
  display: inline-flex; align-items: center; gap: 0.35rem;
  margin-top: 1.15rem;
  font-size: 0.92rem; font-weight: 500;
  color: var(--accent-deep);
}
.product__link span { transition: transform .3s var(--ease); }
.product__link:hover span { transform: translateX(4px); }

/* ---------- 15. Partner (dark) ---------- */
.partner {
  background: var(--night);
  color: var(--on-night);
  position: relative;
  overflow: hidden;
}
.partner::before {
  content: ""; position: absolute; top: -20%; right: -10%;
  width: 50%; height: 80%;
  background: radial-gradient(circle, rgba(79,184,159,.18), transparent 70%);
  pointer-events: none;
}
.partner__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: center;
}
.partner__copy .btn { margin-top: 2rem; }
.partner__list { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem 1.75rem; }
.partner__list li { display: flex; gap: 0.9rem; }
.partner__ico {
  flex-shrink: 0;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--night-card);
  border: 1px solid rgba(255,255,255,.08);
  color: var(--accent-bright);
}
.partner__list strong { display: block; color: var(--on-night); font-size: 1.02rem; margin-bottom: 0.2rem; }
.partner__list p { color: var(--on-night-dim); font-size: 0.9rem; line-height: 1.55; }

/* ---------- 16. CTA ---------- */
.cta {
  padding-block: clamp(4rem, 8vw, 6.5rem);
  background:
    radial-gradient(60% 100% at 50% 0%, rgba(79,184,159,.16), transparent 60%),
    linear-gradient(135deg, var(--accent-deep), var(--accent));
  color: #fff;
  text-align: center;
}
.cta__inner { max-width: 760px; }
.cta__title {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  color: #fff;
}
.cta__lead {
  margin-top: 1.2rem;
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: rgba(255,255,255,.86);
}
.cta__inner .btn { margin-top: 2.2rem; }

/* ---------- 17. Contact ---------- */
.contact { background: var(--canvas); }
.contact__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}
.contact__card {
  background: #fff;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 3vw, 2.5rem);
  box-shadow: var(--shadow-md);
}
.contact__company {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin-bottom: 0.6rem;
}
.contact__addr { color: var(--ink-soft); margin-bottom: 1.5rem; }
.contact__links { display: grid; gap: 0.85rem; padding-top: 1.5rem; border-top: 1px solid var(--line); }
.contact__links a { display: flex; align-items: center; gap: 0.85rem; transition: color .25s var(--ease); }
.contact__links a:hover { color: var(--accent-deep); }
.contact__ico {
  flex-shrink: 0;
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border-radius: 12px;
  background: var(--accent-tint);
  color: var(--accent-deep);
}
.contact__links span span { display: block; }
.contact__label { font-size: 0.78rem; color: var(--ink-faint); letter-spacing: 0.04em; text-transform: uppercase; }
.contact__shop { margin-top: 1.75rem; width: 100%; justify-content: center; }

/* ---------- 18. Footer ---------- */
.footer { background: var(--night); color: var(--on-night-dim); }
.footer__inner {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: 2.5rem;
  padding-block: clamp(3rem, 6vw, 4.5rem);
}
.footer__mark {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--on-night);
}
.footer__tag { margin-top: 0.9rem; font-size: 0.92rem; max-width: 34ch; }
.footer__col { display: grid; gap: 0.7rem; align-content: start; }
.footer__col h3 {
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--on-night);
  margin-bottom: 0.3rem;
}
.footer__col a { font-size: 0.94rem; transition: color .25s var(--ease); width: fit-content; }
.footer__col a:hover { color: var(--accent-bright); }
.footer__addr { font-size: 0.92rem; line-height: 1.6; }
.footer__base { border-top: 1px solid rgba(255,255,255,.08); }
.footer__base-inner {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem;
  padding-block: 1.5rem;
  font-size: 0.85rem;
}

/* ---------- 19. Back-to-top ---------- */
.to-top {
  position: fixed; right: 1.5rem; bottom: 1.5rem;
  width: 46px; height: 46px;
  display: grid; place-items: center;
  border-radius: 50%;
  background: var(--ink);
  color: var(--canvas);
  box-shadow: var(--shadow-md);
  opacity: 0; visibility: hidden; transform: translateY(12px);
  transition: opacity .35s var(--ease), transform .35s var(--ease), background .25s var(--ease);
  z-index: 900;
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { background: var(--accent-deep); transform: translateY(-3px); }

/* ---------- 20. Responsive ---------- */
@media (max-width: 980px) {
  .nav__links { display: none; }
  .nav__toggle { display: flex; }
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 420px; margin-inline: auto; }
  .hero__lead { max-width: 52ch; }
  .about__grid { grid-template-columns: repeat(2, 1fr); }
  .why__grid { grid-template-columns: repeat(2, 1fr); }
  .products__grid { grid-template-columns: repeat(2, 1fr); }
  .partner__inner { grid-template-columns: 1fr; }
  .contact__inner { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 620px) {
  body { font-size: 1rem; }
  .about__grid { grid-template-columns: 1fr; }
  .why__grid { grid-template-columns: 1fr; }
  .products__grid { grid-template-columns: 1fr; }
  .partner__list { grid-template-columns: 1fr; }
  .stats__grid { grid-template-columns: 1fr 1fr; gap: 2rem 1rem; }
  .stat:nth-child(3)::before, .stat:nth-child(odd)::before { display: none; }
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
  .hero__chip--a { left: 0; }
  .hero__chip--b { right: 0; }
  .nav__brand-sub { display: none; }
}

/* ---------- 21. Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .reveal { opacity: 1; transform: none; }
  .hero__rings, .hero__nodes circle, .hero__tooth, .marquee__group, .preloader__fill { animation: none; }
  .preloader__fill { width: 100%; }
}