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

:root {
  --color-blue:       #2563eb;
  --color-blue-dark:  #1d4ed8;
  --color-slate-900:  #0f172a;
  --color-slate-800:  #1e293b;
  --color-slate-700:  #334155;
  --color-slate-600:  #475569;
  --color-slate-400:  #94a3b8;
  --color-slate-200:  #e2e8f0;
  --color-slate-100:  #f1f5f9;
  --color-slate-50:   #f8fafc;
  --color-white:      #ffffff;

  --font: system-ui, -apple-system, 'Segoe UI', sans-serif;
  --radius: 0.5rem;
  --shadow:    0 1px 3px rgba(0,0,0,.10), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 15px rgba(0,0,0,.10), 0 4px 6px rgba(0,0,0,.05);
  --shadow-xl: 0 20px 25px rgba(0,0,0,.10), 0 8px 10px rgba(0,0,0,.04);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  color: var(--color-slate-800);
  background: var(--color-white);
  line-height: 1.6;
}

img {
  display: block;
  max-width: 100%;
}

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

.icon {
  display: inline-block;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}
.icon--sm  { width: 1rem;    height: 1rem; }
.icon--lg  { width: 3rem;    height: 3rem; }
.icon--xl  { width: 4rem;    height: 4rem; }
.icon--blue { color: var(--color-blue); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
  text-decoration: none;
}
.btn--primary {
  background: var(--color-blue);
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
}
.btn--primary:hover { background: var(--color-blue-dark); }

.btn--ghost {
  background: rgba(255,255,255,.12);
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,.3);
  backdrop-filter: blur(4px);
}
.btn--ghost:hover { background: rgba(255,255,255,.22); }

.btn--white {
  background: var(--color-white);
  color: var(--color-blue);
  box-shadow: var(--shadow-lg);
}
.btn--white:hover { background: var(--color-slate-100); }

.btn--call {
  background: var(--color-blue);
  color: var(--color-white);
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-weight: 600;
}
.btn--call:hover { background: var(--color-blue-dark); }

.btn--lg {
  font-size: 1.125rem;
  padding: 1rem 2rem;
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(to right, var(--color-slate-800), var(--color-slate-700));
  color: var(--color-white);
  box-shadow: var(--shadow-lg);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.header__brand {
  display: flex;
  flex-direction: column;
}

.header__title {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.header__sub {
  font-size: 0.8rem;
  color: var(--color-slate-200);
}

.header__right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav {
  display: none;
  gap: 1.5rem;
}

.nav a {
  font-size: 0.95rem;
  transition: color 0.2s;
}
.nav a:hover { color: var(--color-slate-200); }

.btn--call__label { display: none; }

.hero {
  position: relative;
  height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
}

.hero__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, rgba(15,23,42,.82), rgba(30,41,59,.62));
}

.hero__content {
  position: relative;
  z-index: 10;
  color: var(--color-white);
  text-align: center;
}

.hero__location {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  font-size: 1.1rem;
  color: var(--color-slate-200);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-slate-200);
  max-width: 42rem;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.section {
  padding: 5rem 0;
}
.section--gray  { background: var(--color-slate-50); }
.section--white { background: var(--color-white); }

.section__title {
  font-size: clamp(1.6rem, 3vw, 2.25rem);
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 1.25rem;
  line-height: 1.25;
}
.section__title--center { text-align: center; }

.section__sub {
  font-size: 1.1rem;
  color: var(--color-slate-600);
  line-height: 1.7;
}
.section__sub--center {
  text-align: center;
  max-width: 42rem;
  margin: 0 auto 3rem;
}

.section__body {
  font-size: 1.05rem;
  color: var(--color-slate-600);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.about__grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.highlight-box {
  background: #eff6ff;
  border-left: 4px solid var(--color-blue);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  margin-bottom: 1.5rem;
  color: var(--color-slate-700);
  font-weight: 600;
}

.about__badge {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
}

.about__badge-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-slate-800);
  line-height: 1;
}

.about__badge-label {
  color: var(--color-slate-600);
}

.about__photo {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  height: 380px;
}

.about__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.advantages__grid {
  display: grid;
  gap: 2rem;
  max-width: 56rem;
  margin: 0 auto;
}

.adv-card {
  background: var(--color-slate-50);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  transition: box-shadow 0.2s;
}
.adv-card:hover { box-shadow: var(--shadow-lg); }

.adv-card__title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-slate-800);
  margin: 1rem 0 0.75rem;
}

.adv-card__text {
  color: var(--color-slate-600);
  line-height: 1.7;
}

.products__grid {
  display: grid;
  gap: 2rem;
  margin-bottom: 4rem;
}

.product-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: box-shadow 0.2s;
}
.product-card:hover { box-shadow: var(--shadow-xl); }

.product-card__photo {
  height: 14rem;
  overflow: hidden;
  background: var(--color-slate-200);
}

.product-card__photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.product-card:hover .product-card__photo img { transform: scale(1.05); }

.product-card__body {
  padding: 1.5rem;
}

.product-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 0.75rem;
}

.product-card__desc {
  font-size: 0.95rem;
  color: var(--color-slate-600);
  line-height: 1.65;
  margin-bottom: 1rem;
}

.product-card__features {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
}

.product-card__features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-slate-600);
}

.product-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--color-blue);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s;
}
.product-card__link:hover { color: var(--color-blue-dark); }

.products__cta {
  background: linear-gradient(to right, var(--color-blue), var(--color-blue-dark));
  color: var(--color-white);
  border-radius: 0.75rem;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.products__cta-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.products__cta-sub {
  font-size: 1.1rem;
  color: #bfdbfe;
  margin-bottom: 1.75rem;
}

.contacts__grid {
  display: grid;
  gap: 2rem;
  max-width: 72rem;
  margin: 0 auto 3rem;
}

.contacts__info {
  background: linear-gradient(135deg, var(--color-slate-800), var(--color-slate-700));
  color: var(--color-white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-xl);
}

.contacts__name {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.contacts__location {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-slate-200);
  margin-bottom: 1.75rem;
}

.contacts__items {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.contacts__item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.contacts__item--phone {
  background: rgba(255,255,255,.1);
  border-radius: var(--radius);
  padding: 1rem;
  flex-direction: column;
  gap: 0.5rem;
  transition: background 0.2s;
}
.contacts__item--phone:hover { background: rgba(255,255,255,.18); }

.contacts__item-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-slate-400);
}

.contacts__phone {
  font-size: 1.5rem;
  font-weight: 700;
  transition: color 0.2s;
}
.contacts__phone:hover { color: #93c5fd; }

.contacts__item-caption {
  font-size: 0.85rem;
  color: var(--color-slate-400);
  margin-bottom: 0.25rem;
}

.contacts__link {
  font-size: 1.05rem;
  transition: color 0.2s;
}
.contacts__link:hover { color: #93c5fd; }

.contacts__hours {
  font-size: 1.15rem;
  font-weight: 700;
  color: #93c5fd;
}

.contacts__benefits {
  border-top: 1px solid rgba(255,255,255,.15);
  padding-top: 1.5rem;
}

.contacts__benefits-title {
  color: var(--color-slate-200);
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.contacts__benefits ul {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contacts__benefits li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
}

.contacts__map {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  height: 420px;
}

.contacts__map iframe {
  width: 100%;
  height: 100%;
  border: none;
}

.contacts__bottom-cta {
  background: var(--color-slate-50);
  border: 2px solid var(--color-blue);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  max-width: 48rem;
  margin: 0 auto;
}

.contacts__bottom-location {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-slate-700);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.contacts__bottom-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 0.75rem;
}

.contacts__bottom-sub {
  color: var(--color-slate-600);
  margin-bottom: 1.75rem;
  line-height: 1.65;
}

.footer {
  background: var(--color-slate-900);
  color: var(--color-white);
  padding: 2.5rem 0;
}

.footer__inner {
  text-align: center;
}

.footer__copy {
  color: var(--color-slate-400);
  margin-bottom: 0.35rem;
}

.footer__sub {
  color: #64748b;
  font-size: 0.9rem;
}

@media (min-width: 640px) {
  .btn--call__label { display: inline; }
}

@media (min-width: 768px) {
  .nav { display: flex; }

  .about__grid { grid-template-columns: 1fr 1fr; }

  .advantages__grid { grid-template-columns: 1fr 1fr; }

  .products__grid { grid-template-columns: repeat(2, 1fr); }

  .contacts__map  { height: auto; }
}

@media (min-width: 1024px) {
  .products__grid { grid-template-columns: repeat(3, 1fr); }
}

.burger {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 2rem;
  height: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.burger span {
  display: block;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
}

.burger.is-open span:nth-child(1) { transform: translateY(9px) rotate(45deg); }
.burger.is-open span:nth-child(2) { opacity: 0; }
.burger.is-open span:nth-child(3) { transform: translateY(-9px) rotate(-45deg); }

.mobile-nav {
  display: none;
  flex-direction: column;
  background: var(--color-slate-800);
  padding: 0.5rem 0;
  position: sticky;
  top: 64px;
  z-index: 99;
}

.mobile-nav.is-open { display: flex; }

.mobile-nav__link {
  padding: 0.85rem 1.5rem;
  color: var(--color-white);
  font-size: 1rem;
  border-bottom: 1px solid rgba(255,255,255,.07);
  transition: background 0.15s;
}
.mobile-nav__link:hover { background: rgba(255,255,255,.08); }

.btn--full { width: 100%; justify-content: center; }

@media (min-width: 768px) {
  .burger      { display: none; }
  .mobile-nav  { display: none !important; }
}