:root {
  --blue-900: #0b2c5c;
  --blue-700: #14448c;
  --blue-100: #e8eff8;
  --green:    #27ae60;
  --green-d:  #1e8f4e;
  --gold:     #f0a30a;
  --ink:      #2b2f36;
  --ink-soft: #626b78;
  --line:     #dfe5ec;
  --bg-alt:   #f4f7fb;
  --radius:   6px;
  --wrap:     1200px;
  --shadow:   0 2px 10px rgba(11, 44, 92, .08);
}

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

body {
  margin: 0;
  font-family: Roboto, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  background: #fff;
}

h1, h2, h3 { line-height: 1.25; margin: 0 0 .55em; font-weight: 700; }
h1 { font-size: 2.1rem; }
h2 { font-size: 1.65rem; color: var(--blue-900); }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--blue-700); }
a:hover, a:focus-visible { color: var(--green-d); }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.container { width: min(100% - 32px, var(--wrap)); margin-inline: auto; }

/* ---------- header ---------- */

.site-header { position: sticky; top: 0; z-index: 50; background: #fff; box-shadow: var(--shadow); }

.topbar { background: var(--blue-900); color: #c6d6ea; font-size: .82rem; }
.topbar__in { display: flex; flex-wrap: wrap; gap: 4px 24px; justify-content: space-between; align-items: center; min-height: 32px; }
.topbar p { margin: 0; }
.topbar__links { display: flex; gap: 16px; }
.topbar a { color: #fff; text-decoration: none; }
.topbar a:hover { color: var(--gold); }

.header__in { display: flex; align-items: center; gap: 20px; padding: 12px 0; }

.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; margin-right: auto; }
.brand img { width: 54px; height: 54px; object-fit: contain; }
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name { font-size: 1.4rem; font-weight: 700; color: var(--blue-900); }
.brand__sub { font-size: .74rem; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-soft); }

.header__hotline { display: flex; align-items: center; gap: 10px; margin: 0; font-size: .82rem; color: var(--ink-soft); }
.header__hotline img { width: 34px; height: 32px; object-fit: contain; }
.header__hotline a { font-size: 1.1rem; font-weight: 700; color: var(--green-d); text-decoration: none; }

.nav-toggle {
  display: none; width: 46px; height: 42px; background: none;
  border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer;
}
.nav-toggle__box { display: block; position: relative; width: 22px; height: 2px; margin: 0 auto; background: var(--blue-700); }
.nav-toggle__box::before, .nav-toggle__box::after {
  content: ""; position: absolute; left: 0; width: 22px; height: 2px; background: var(--blue-700);
}
.nav-toggle__box::before { top: -7px; }
.nav-toggle__box::after  { top:  7px; }

.primary-nav { background: var(--blue-700); }
.primary-nav ul { display: flex; flex-wrap: wrap; list-style: none; margin-inline: auto; padding: 0; }
.primary-nav a {
  display: block; padding: 12px 18px; color: #fff; text-decoration: none;
  font-size: .93rem; font-weight: 500;
}
.primary-nav a:hover, .primary-nav a:focus-visible { background: var(--blue-900); color: #fff; }

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

.hero { background: linear-gradient(180deg, var(--blue-100), #fff); padding: 40px 0; }
.hero__in { display: grid; grid-template-columns: 1.05fr 1fr; gap: 36px; align-items: center; }
.hero h1 { color: var(--blue-900); }
.hero p { color: var(--ink-soft); max-width: 56ch; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 0; }
.hero__img { margin: 0; }
.hero__img img { width: 100%; border-radius: var(--radius); }

.btn { display: inline-block; padding: 12px 26px; border-radius: var(--radius); font-weight: 700; text-decoration: none; font-size: .95rem; }
.btn--primary { background: var(--green); color: #fff; }
.btn--primary:hover { background: var(--green-d); color: #fff; }
.btn--ghost { border: 2px solid var(--blue-700); color: var(--blue-700); padding: 10px 24px; }
.btn--ghost:hover { background: var(--blue-700); color: #fff; }

/* ---------- usp ---------- */

.usp { border-block: 1px solid var(--line); background: #fff; }
.usp__list { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; list-style: none; margin: 0; padding: 18px 0; }
.usp__list li { display: flex; align-items: center; gap: 12px; min-width: 0; }
.usp__list img { width: 41px; height: 41px; flex: none; }
.usp__list p { margin: 0; font-size: .88rem; color: var(--ink-soft); }
.usp__list strong { color: var(--blue-900); font-size: .95rem; }

/* ---------- sections ---------- */

.section { padding: 46px 0; }
.section--alt { background: var(--bg-alt); }

.about, .brands { display: grid; grid-template-columns: 1.4fr 1fr; gap: 34px; align-items: center; }
.about__img, .brands__img { margin: 0; }
.about__img img { width: 100%; border-radius: var(--radius); }
.brands__img img { width: 100%; max-width: 274px; margin-inline: auto; border-radius: var(--radius); }

.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { position: relative; padding-left: 26px; margin-bottom: 6px; }
.ticks li::before { content: ""; position: absolute; left: 4px; top: .6em; width: 8px; height: 8px; border-radius: 50%; background: var(--green); }

.brands__list { columns: 2; list-style: none; margin: 0; padding: 0; font-size: .95rem; }
.brands__list li { padding: 4px 0; break-inside: avoid; }

/* ---------- catalog ---------- */

.catalog { display: grid; grid-template-columns: 240px 1fr; gap: 28px; align-items: start; }

.cat-tree { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; position: sticky; top: 130px; }
.cat-tree__title { font-size: 1.05rem; margin-bottom: .7em; padding-bottom: .5em; border-bottom: 2px solid var(--green); }
.cat-tree ul { list-style: none; margin: 0; padding: 0; font-size: .9rem; }
.cat-tree > ul > li { margin-bottom: 10px; }
.cat-tree__parent { display: block; font-weight: 700; color: var(--blue-900); }
.cat-tree ul ul { padding-left: 12px; color: var(--ink-soft); }
.cat-tree ul ul li { padding: 2px 0; }

.catalog__main { min-width: 0; }
.catblock { margin-bottom: 34px; }
.catblock:last-child { margin-bottom: 0; }
.catblock__title { padding-bottom: 10px; border-bottom: 2px solid var(--blue-700); }

.products { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.products > * { min-width: 0; }
.product {
  margin: 0; background: #fff; border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; display: flex; flex-direction: column;
}
.product img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; }
.product figcaption { padding: 12px 14px 14px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.product h3 { margin: 0; font-size: .95rem; color: var(--blue-900); }
.product__cta { margin: auto 0 0; }
.product__cta a { font-size: .85rem; font-weight: 700; color: var(--green-d); text-decoration: none; }
.product__cta a::after { content: " →"; }

/* ---------- policy + contact ---------- */

.policy { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.policy article { background: #fff; border-left: 4px solid var(--gold); border-radius: var(--radius); padding: 18px 20px; min-width: 0; }
.policy h3 { color: var(--blue-900); }
.policy p { margin: 0; font-size: .93rem; color: var(--ink-soft); }

.section--contact { background: var(--blue-900); color: #dbe6f4; }
.section--contact h2 { color: #fff; }
.contact { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.contact__box { background: rgba(255, 255, 255, .07); border-radius: var(--radius); padding: 20px 22px; min-width: 0; }
.contact__box h3 { color: var(--gold); }
.contact address { font-style: normal; }
.contact a { color: #fff; font-weight: 600; }
.contact a:hover { color: var(--gold); }
.contact p:last-child { margin-bottom: 0; }

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

.site-footer { background: #16202c; color: #9fb0c2; font-size: .92rem; padding-top: 36px; }
.footer__in { display: grid; grid-template-columns: 1.6fr 1fr 1fr; gap: 28px; padding-bottom: 24px; }
.footer__col img { background: #fff; border-radius: var(--radius); padding: 6px; max-width: 300px; margin-bottom: 12px; }
.footer__head { color: #fff; font-weight: 700; margin-bottom: .6em; }
.site-footer ul { list-style: none; margin: 0; padding: 0; }
.site-footer li { margin-bottom: 6px; }
.site-footer a { color: #9fb0c2; text-decoration: none; }
.site-footer a:hover { color: var(--gold); }
.footer__bottom { border-top: 1px solid #26333f; padding: 14px 0; }
.footer__bottom p { margin: 0; font-size: .85rem; }

/* ---------- mobile ---------- */

@media (max-width: 1080px) {
  .products { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 900px) {
  .catalog { grid-template-columns: 1fr; }
  .cat-tree { position: static; }
  .cat-tree ul { columns: 2; }
  .hero__in, .about, .brands { grid-template-columns: 1fr; }
  .usp__list { grid-template-columns: repeat(2, 1fr); }
  .footer__in { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  h1 { font-size: 1.65rem; }
  h2 { font-size: 1.35rem; }
  .section { padding: 34px 0; }

  .nav-toggle { display: block; }
  .primary-nav { display: none; }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; }
  .primary-nav a { border-bottom: 1px solid rgba(255, 255, 255, .15); }

  .header__hotline span { display: none; }
  .products { grid-template-columns: repeat(2, 1fr); }
  .policy, .contact, .footer__in { grid-template-columns: 1fr; }
  .brands__list, .cat-tree ul { columns: 1; }
  .topbar__in { justify-content: center; }
}

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}