/* ─── Reset & Base ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #F8F6F0;
  --fg:        #1B2033;
  --card:      #FFFFFF;
  --primary:   #2C4D8E;
  --prim-fg:   #FAFAFA;
  --secondary: #EDECE7;
  --sec-fg:    #1B2033;
  --muted-fg:  #6B7285;
  --accent:    #3762C4;
  --acc-fg:    #FAFAFA;
  --border:    #D9D7CF;
  --radius:    0.5rem;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main { flex: 1; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: none; background: none; }

/* ─── Container ─────────────────────────────────────────────────────────────── */
.container {
  max-width: 80rem;
  margin-inline: auto;
  padding-inline: 1rem;
}
@media (min-width: 640px)  { .container { padding-inline: 1.5rem; } }
@media (min-width: 1024px) { .container { padding-inline: 2rem; } }

/* ─── SVG Icons ─────────────────────────────────────────────────────────────── */
.icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  vertical-align: middle;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  flex-shrink: 0;
}
.icon-sm  { font-size: 0.875rem; }
.icon-md  { font-size: 1.25rem; }
.icon-lg  { font-size: 1.5rem; }

/* ─── Icon Box ───────────────────────────────────────────────────────────────── */
.icon-box {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  flex-shrink: 0;
}
.icon-box--secondary { background: var(--secondary); border: 1px solid var(--border); color: var(--accent); }
.icon-box--accent    { background: var(--accent); color: var(--acc-fg); }
.icon-box--bg        { background: var(--bg); border: 1px solid var(--border); color: var(--accent); }

/* ─── Badges ─────────────────────────────────────────────────────────────────── */
.badge-article {
  display: inline-block;
  font-family: monospace;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  padding: 0.125rem 0.5rem;
  border-radius: 0.25rem;
}
.label-section {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ─── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: background 0.15s, color 0.15s, border-color 0.15s;
  white-space: nowrap;
}
.btn-primary {
  background: var(--primary);
  color: var(--prim-fg);
  border: 1px solid var(--primary);
}
.btn-primary:hover { background: var(--accent); border-color: var(--accent); }
.btn-secondary {
  background: var(--secondary);
  color: var(--fg);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: var(--primary); }
.btn-outline {
  background: var(--secondary);
  color: var(--fg);
  border: 1px solid var(--border);
  width: 100%;
  justify-content: center;
}
.btn-outline:hover { background: var(--accent); color: var(--acc-fg); border-color: var(--accent); }

/* ─── Header ─────────────────────────────────────────────────────────────────── */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.logo-icon {
  width: 2rem;
  height: 2rem;
  background: var(--primary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--prim-fg);
}
.logo-text { line-height: 1.2; }
.logo-name { font-size: 0.875rem; font-weight: 700; color: var(--fg); letter-spacing: 0.03em; }
.logo-sub  { font-size: 0.625rem; color: var(--muted-fg); text-transform: uppercase; letter-spacing: 0.1em; }

/* Desktop Nav */
.nav-desktop {
  display: none;
  align-items: center;
  gap: 2rem;
}
@media (min-width: 768px) { .nav-desktop { display: flex; } }

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-fg);
  transition: color 0.15s;
}
.nav-link:hover { color: var(--fg); }

/* Catalog Dropdown */
.dropdown { position: relative; }
.dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted-fg);
  padding: 0.25rem 0;
  transition: color 0.15s;
}
.dropdown-trigger:hover { color: var(--fg); }
.dropdown-trigger svg { transition: transform 0.2s; }
.dropdown:hover .dropdown-trigger svg { transform: rotate(180deg); }
.dropdown:hover .dropdown-trigger { color: var(--fg); }

.dropdown-panel {
  display: none;
  position: absolute;
  left: 50%;
  top: calc(100% + 4px);
  transform: translateX(-50%);
  width: 14rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.08);
  padding: 0.25rem 0;
  z-index: 100;
}
.dropdown:hover .dropdown-panel { display: block; }
.dropdown-item {
  display: block;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: var(--muted-fg);
  transition: color 0.15s, background 0.15s;
}
.dropdown-item:hover { color: var(--fg); background: var(--secondary); }

/* Header CTA — hidden on mobile, shown on md+ */
.hdr-cta { display: none; }
@media (min-width: 768px) { .hdr-cta { display: inline-flex; } }

/* Mobile burger */
.burger {
  display: flex;
  align-items: center;
  padding: 0.5rem;
  color: var(--muted-fg);
  transition: color 0.15s;
}
.burger:hover { color: var(--fg); }
@media (min-width: 768px) { .burger { display: none; } }

/* Mobile menu */
.mobile-menu {
  display: none;
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 1rem;
  flex-direction: column;
  gap: 0.25rem;
}
.mobile-menu.open { display: flex; }
@media (min-width: 768px) { .mobile-menu { display: none !important; } }

.mobile-menu-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--muted-fg);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.25rem 0.5rem;
}
.mobile-menu-link {
  display: block;
  font-size: 0.875rem;
  color: var(--muted-fg);
  padding: 0.375rem 0.25rem;
  border-bottom: 1px solid color-mix(in srgb, var(--border) 50%, transparent);
  transition: color 0.15s;
}
.mobile-menu-link:last-of-type { border-bottom: none; }
.mobile-menu-link:hover { color: var(--fg); }
.mobile-menu-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  padding-top: 0.75rem;
}

/* ─── Hero ───────────────────────────────────────────────────────────────────── */
.hero {
  position: relative;
  overflow: hidden;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.hero-grid-bg {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  pointer-events: none;
  background-image:
    linear-gradient(var(--fg) 1px, transparent 1px),
    linear-gradient(90deg, var(--fg) 1px, transparent 1px);
  background-size: 64px 64px;
}
.hero-inner {
  position: relative;
  padding-top: 3rem;
  padding-bottom: 5rem;
}
@media (min-width: 768px) {
  .hero-inner { padding-top: 3.5rem; padding-bottom: 7rem; }
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.75rem);
  font-weight: 700;
  color: var(--fg);
  line-height: 1.15;
  max-width: 48rem;
  margin-bottom: 1.5rem;
}
.hero-lead {
  font-size: 1.125rem;
  color: var(--muted-fg);
  max-width: 36rem;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 4rem;
}
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  max-width: 28rem;
}
.hero-stat-icon { color: var(--accent); margin-bottom: 0.25rem; }
.hero-stat-value { font-size: 1.5rem; font-weight: 700; color: var(--fg); }
.hero-stat-label { font-size: 0.75rem; color: var(--muted-fg); line-height: 1.4; }

/* ─── Catalog Section ────────────────────────────────────────────────────────── */
.section-catalog { background: var(--bg); padding-block: 4rem; }
@media (min-width: 768px) { .section-catalog { padding-block: 5rem; } }

.section-head { margin-bottom: 3rem; }
.section-head-row {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
@media (min-width: 768px) {
  .section-head-row { flex-direction: row; align-items: flex-end; justify-content: space-between; }
}
.section-head h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 700; color: var(--fg); }
.section-head-note { font-size: 0.875rem; color: var(--muted-fg); max-width: 20rem; line-height: 1.6; }

.catalog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}
@media (min-width: 640px)  { .catalog-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .catalog-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 1280px) { .catalog-grid { grid-template-columns: repeat(4, 1fr); } }

/* Category Card */
.cat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.15s;
}
.cat-card:hover { border-color: var(--accent); }

.cat-card-main {
  display: block;
  padding: 1.5rem 1.5rem 1rem;
}
.cat-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.cat-card-icon-wrap {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: background 0.15s;
}
.cat-card:hover .cat-card-icon-wrap { background: color-mix(in srgb, var(--accent) 12%, transparent); }
.cat-card-arrow { color: var(--muted-fg); transition: color 0.15s, transform 0.15s; }
.cat-card:hover .cat-card-arrow { color: var(--accent); transform: translateX(2px); }
.cat-card-name { font-size: 1rem; font-weight: 600; color: var(--fg); margin-bottom: 0.25rem; }
.cat-card-desc { font-size: 0.875rem; color: var(--muted-fg); line-height: 1.6; }

.cat-card-subs {
  padding: 1rem 1.5rem 1.25rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.cat-card-sub-link {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  background: var(--secondary);
  color: var(--muted-fg);
  border: 1px solid var(--border);
  border-radius: 0.25rem;
  transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.cat-card-sub-link:hover {
  background: var(--accent);
  color: var(--acc-fg);
  border-color: var(--accent);
}

/* ─── About ──────────────────────────────────────────────────────────────────── */
.section-about {
  background: var(--secondary);
  border-block: 1px solid var(--border);
  padding-block: 4rem;
}
@media (min-width: 768px) { .section-about { padding-block: 5rem; } }

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
}
@media (min-width: 1024px) {
  .about-grid { grid-template-columns: repeat(2, 1fr); align-items: center; gap: 4rem; }
}
.about-text h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); font-weight: 700; color: var(--fg); margin-bottom: 1.5rem; }
.about-text p  { color: var(--muted-fg); line-height: 1.7; margin-bottom: 1.5rem; }
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}
@media (min-width: 640px) { .advantages-grid { grid-template-columns: repeat(2, 1fr); } }

.advantage-item { display: flex; align-items: flex-start; gap: 0.75rem; }
.advantage-icon { color: var(--accent); flex-shrink: 0; margin-top: 0.125rem; }
.advantage-text { font-size: 0.875rem; color: var(--fg); line-height: 1.5; }

/* ─── Contacts ───────────────────────────────────────────────────────────────── */
.section-contacts { background: var(--bg); padding-block: 4rem; }
@media (min-width: 768px) { .section-contacts { padding-block: 5rem; } }

.contacts-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}
@media (min-width: 640px)  { .contacts-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .contacts-grid { grid-template-columns: repeat(4, 1fr); } }

.contact-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.contact-label { font-size: 0.75rem; color: var(--muted-fg); margin-bottom: 0.25rem; }
.contact-value { font-size: 0.875rem; font-weight: 500; color: var(--fg); transition: color 0.15s; }
a.contact-value:hover { color: var(--accent); }

.contact-wide {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ─── Footer ─────────────────────────────────────────────────────────────────── */
.site-footer {
  background: var(--fg);
  color: var(--prim-fg);
  border-top: 1px solid var(--border);
}
.footer-inner { padding-block: 3rem; }
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
}
@media (min-width: 768px) { .footer-grid { grid-template-columns: repeat(3, 1fr); } }

.footer-brand-icon {
  width: 2rem;
  height: 2rem;
  background: var(--accent);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--prim-fg);
}
.footer-logo { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 1rem; }
.footer-logo-name { font-size: 0.875rem; font-weight: 700; letter-spacing: 0.03em; }
.footer-logo-sub  { font-size: 0.625rem; color: rgba(250,250,250,0.5); text-transform: uppercase; letter-spacing: 0.1em; }
.footer-tagline { font-size: 0.875rem; color: rgba(250,250,250,0.6); line-height: 1.7; max-width: 20rem; }

.footer-nav-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(250,250,250,0.4);
  margin-bottom: 1rem;
}
.footer-nav-list { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-nav-link { font-size: 0.875rem; color: rgba(250,250,250,0.7); transition: color 0.15s; }
.footer-nav-link:hover { color: var(--prim-fg); }
.footer-sub-list {
  margin-top: 0.5rem;
  margin-left: 0.75rem;
  padding-left: 0.75rem;
  border-left: 1px solid rgba(250,250,250,0.1);
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}
.footer-sub-link { font-size: 0.75rem; color: rgba(250,250,250,0.5); transition: color 0.15s; }
.footer-sub-link:hover { color: var(--prim-fg); }

.footer-contacts { display: flex; flex-direction: column; gap: 0.75rem; }
.footer-contact-item { font-size: 0.875rem; color: rgba(250,250,250,0.7); transition: color 0.15s; }
a.footer-contact-item:hover { color: var(--prim-fg); }

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(250,250,250,0.1);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: rgba(250,250,250,0.4);
}
@media (min-width: 640px) { .footer-bottom { flex-direction: row; justify-content: space-between; } }

/* ─── Breadcrumbs ────────────────────────────────────────────────────────────── */
.breadcrumbs {
  background: var(--secondary);
  border-bottom: 1px solid var(--border);
}
.breadcrumbs-inner {
  padding-block: 0.75rem;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.25rem;
}
.bc-item { display: flex; align-items: center; gap: 0.25rem; }
.bc-link { font-size: 0.875rem; color: var(--muted-fg); display: flex; align-items: center; gap: 0.25rem; transition: color 0.15s; }
.bc-link:hover { color: var(--fg); }
.bc-sep { color: var(--border); flex-shrink: 0; }
.bc-current { font-size: 0.875rem; font-weight: 500; color: var(--fg); }

/* ─── Section Hero ───────────────────────────────────────────────────────────── */
.section-hero {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  padding-block: 3rem;
}
@media (min-width: 768px) { .section-hero { padding-block: 4rem; } }

.section-hero-inner {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}
@media (min-width: 1024px) {
  .section-hero-inner { flex-direction: row; align-items: flex-start; justify-content: space-between; }
}

.section-hero-tag {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}
.section-hero-tag-text { font-size: 0.75rem; font-weight: 600; color: var(--accent); text-transform: uppercase; letter-spacing: 0.1em; }
.section-hero-left { max-width: 40rem; }
.section-hero-left h1 { font-size: clamp(1.75rem, 4vw, 3rem); font-weight: 700; color: var(--fg); line-height: 1.2; margin-bottom: 1.25rem; }
.section-hero-left p  { font-size: 1rem; color: var(--muted-fg); line-height: 1.7; }

.section-hero-subs {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  width: 16rem;
  flex-shrink: 0;
}
@media (min-width: 1024px) { .section-hero-subs { min-width: 16rem; } }
.section-hero-subs-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted-fg);
  margin-bottom: 0.75rem;
}
.section-hero-sub-item { display: flex; align-items: center; gap: 0.5rem; }
.section-hero-sub-dot { width: 0.375rem; height: 0.375rem; border-radius: 50%; background: var(--accent); flex-shrink: 0; }
.section-hero-sub-link { font-size: 0.875rem; color: var(--fg); padding-block: 0.25rem; display: block; transition: color 0.15s; }
.section-hero-sub-link:hover { color: var(--accent); }

/* ─── Models Grid ────────────────────────────────────────────────────────────── */
.section-models { background: var(--bg); padding-block: 3.5rem; }
@media (min-width: 768px) { .section-models { padding-block: 4.5rem; } }

.models-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}
@media (min-width: 640px)  { .models-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .models-grid { grid-template-columns: repeat(3, 1fr); } }

.model-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.15s;
}
.model-card:hover { border-color: var(--accent); }
.model-card-body { padding: 1.5rem 1.5rem 1rem; flex: 1; }
.model-card-name { font-size: 1rem; font-weight: 600; color: var(--fg); margin-bottom: 0.5rem; line-height: 1.35; }
.model-card-desc { font-size: 0.875rem; color: var(--muted-fg); line-height: 1.6; }
.model-card-specs {
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem 1rem;
}
.spec-label { font-size: 0.75rem; color: var(--muted-fg); }
.spec-value { font-size: 0.875rem; font-weight: 500; color: var(--fg); }
.model-card-cta { border-top: 1px solid var(--border); padding: 0.75rem 1.5rem 1.25rem; }

/* ─── Why Us ─────────────────────────────────────────────────────────────────── */
.section-why-us {
  background: var(--secondary);
  border-block: 1px solid var(--border);
  padding-block: 3.5rem;
}
@media (min-width: 768px) { .section-why-us { padding-block: 4.5rem; } }

.why-us-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}
@media (min-width: 640px)  { .why-us-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .why-us-grid { grid-template-columns: repeat(3, 1fr); } }

.why-us-item { display: flex; gap: 1rem; }
.why-us-item-text h3 { font-size: 0.875rem; font-weight: 600; color: var(--fg); margin-bottom: 0.25rem; }
.why-us-item-text p  { font-size: 0.875rem; color: var(--muted-fg); line-height: 1.6; }

/* ─── Section head (shared) ──────────────────────────────────────────────────── */
.head-block { margin-bottom: 2.5rem; }
.head-block h2 { font-size: clamp(1.5rem, 3vw, 1.875rem); font-weight: 700; color: var(--fg); }