/* ПромСнаб — zpu-plomba.ru */
:root {
  --ink: #1b2026;
  --ink-2: #3b434d;
  --muted: #6b7480;
  --line: #e2e5e9;
  --bg: #ffffff;
  --bg-soft: #f4f5f7;
  --dark: #161a1f;
  --dark-2: #222830;
  --accent: #e8590c;
  --accent-dark: #c2470a;
  --accent-soft: #fff1e8;
  --radius: 10px;
  --wrap: 1180px;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
}
img, svg { max-width: 100%; display: block; }
a { color: var(--accent-dark); }
a:hover { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: clamp(30px, 4.4vw, 50px); }
h2 { font-size: clamp(24px, 3vw, 34px); }
h3 { font-size: 20px; }
p { margin: 0 0 1em; }
ul { padding-left: 1.2em; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 20px; }
.section { padding: 72px 0; }
.section--soft { background: var(--bg-soft); }
.section--dark { background: var(--dark); color: #e9ecef; }
.section--dark h2 { color: #fff; }
.eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 12px;
}
.lead { font-size: 19px; color: var(--ink-2); max-width: 760px; }
.section-head { margin-bottom: 40px; }

/* ---------- header ---------- */
.topbar { background: var(--dark); color: #b9c0c8; font-size: 14px; }
.topbar .wrap { display: flex; justify-content: space-between; gap: 16px; padding-top: 8px; padding-bottom: 8px; flex-wrap: wrap; }
.topbar a { color: #fff; text-decoration: none; }
.header { position: sticky; top: 0; z-index: 50; background: #fff; border-bottom: 1px solid var(--line); }
.header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 72px; }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--ink); }
.logo svg { width: 40px; height: 40px; flex: none; }
.logo b { display: block; font-size: 20px; line-height: 1.1; }
.logo small { display: block; font-size: 12px; color: var(--muted); letter-spacing: .02em; }
.nav { display: flex; align-items: center; gap: 6px; }
.nav a {
  padding: 8px 12px;
  border-radius: 8px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 600;
  font-size: 15px;
}
.nav a:hover, .nav a[aria-current="page"] { background: var(--bg-soft); color: var(--accent-dark); }
.nav .btn { margin-left: 8px; }
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  width: 44px; height: 44px;
  cursor: pointer;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  display: block; width: 20px; height: 2px; background: var(--ink); margin: 0 auto; position: relative; content: "";
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 22px;
  border-radius: 8px;
  border: 2px solid var(--accent);
  background: var(--accent);
  color: #fff !important;
  font: inherit; font-weight: 700; font-size: 16px;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn--ghost { background: transparent; color: #fff !important; border-color: rgba(255,255,255,.45); }
.btn--ghost:hover { background: rgba(255,255,255,.08); border-color: #fff; }
.btn--line { background: transparent; color: var(--accent-dark) !important; }
.btn--line:hover { background: var(--accent-soft); }

/* ---------- hero ---------- */
.hero {
  background:
    radial-gradient(1000px 500px at 85% 20%, rgba(232,89,12,.22), transparent 60%),
    linear-gradient(160deg, #1d232a 0%, #121519 100%);
  color: #e9ecef;
  padding: 84px 0 92px;
  overflow: hidden;
}
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: 48px; align-items: center; }
.hero h1 { color: #fff; }
.hero p { font-size: 19px; color: #c5ccd3; max-width: 620px; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.hero-facts { display: flex; gap: 36px; flex-wrap: wrap; margin-top: 44px; padding-top: 28px; border-top: 1px solid rgba(255,255,255,.12); }
.hero-facts b { display: block; font-size: 30px; color: #fff; line-height: 1.1; }
.hero-facts span { font-size: 14px; color: #9aa4ae; }
.hero-art { background: rgba(255,255,255,.04); border: 1px solid rgba(255,255,255,.1); border-radius: 18px; padding: 28px; }

.page-hero { background: linear-gradient(160deg, #1d232a 0%, #121519 100%); color: #c5ccd3; padding: 40px 0 52px; }
.page-hero h1 { color: #fff; margin-top: 14px; }
.page-hero p { max-width: 760px; font-size: 18px; margin: 0; }
.crumbs { font-size: 14px; color: #8f99a3; }
.crumbs a { color: #c5ccd3; text-decoration: none; }
.crumbs a:hover { color: #fff; }
.crumbs span { margin: 0 6px; }

/* ---------- cards / grids ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card h3 { margin-bottom: .4em; }
.card p:last-child { margin-bottom: 0; }
.cat-card {
  display: flex; flex-direction: column;
  text-decoration: none; color: var(--ink);
  transition: border-color .15s, box-shadow .15s, transform .15s;
}
.cat-card:hover { border-color: var(--accent); box-shadow: 0 10px 30px rgba(22,26,31,.08); transform: translateY(-2px); color: var(--ink); }
.cat-card .art { background: var(--bg-soft); border-radius: 8px; padding: 18px; margin-bottom: 20px; aspect-ratio: 16 / 10; display: grid; place-items: center; }
.cat-card .art img { max-height: 100%; width: auto; }
.cat-card p { color: var(--muted); font-size: 15px; flex: 1; }
.cat-card .more { font-weight: 700; color: var(--accent-dark); font-size: 15px; }
.feature .icon {
  width: 48px; height: 48px; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent);
  display: grid; place-items: center; margin-bottom: 16px;
}
.feature .icon svg { width: 26px; height: 26px; }
.feature p { color: var(--muted); font-size: 15px; }
.section--dark .card { background: var(--dark-2); border-color: #2f3640; color: #c5ccd3; }
.section--dark .card h3 { color: #fff; }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split--top { align-items: start; }
.panel-art { background: var(--bg-soft); border-radius: 16px; padding: 32px; }

.checklist { list-style: none; padding: 0; margin: 0 0 1em; }
.checklist li { position: relative; padding-left: 30px; margin-bottom: 10px; }
.checklist li::before {
  content: "✓"; position: absolute; left: 0; top: .2em;
  width: 20px; height: 20px; border-radius: 5px;
  background: var(--accent); color: #fff;
  font-size: 13px; font-weight: 700; line-height: 20px; text-align: center;
}

.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { position: relative; padding-top: 52px; }
.step::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  position: absolute; top: 0; left: 0;
  font-size: 32px; font-weight: 800; color: var(--accent);
}
.step p { color: var(--muted); font-size: 15px; }

/* ---------- product page ---------- */
.model { display: grid; grid-template-columns: 300px 1fr; gap: 36px; padding: 36px 0; border-top: 1px solid var(--line); }
.model:first-child { border-top: 0; padding-top: 0; }
.model .art { background: var(--bg-soft); border-radius: 12px; padding: 24px; display: grid; place-items: center; align-self: start; }
.model h3 { font-size: 24px; }
.tag { display: inline-block; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .06em; background: var(--accent-soft); color: var(--accent-dark); border-radius: 6px; padding: 3px 8px; margin: 0 6px 10px 0; }

.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 0 1em; }
table { width: 100%; border-collapse: collapse; font-size: 15px; min-width: 420px; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { background: var(--bg-soft); font-weight: 700; }
td:last-child { white-space: nowrap; }
td.wrap-ok { white-space: normal; }

.note { background: var(--accent-soft); border-left: 4px solid var(--accent); border-radius: 0 var(--radius) var(--radius) 0; padding: 18px 22px; margin: 24px 0; }
.note p:last-child { margin-bottom: 0; }

.prose { max-width: 820px; }
.prose h2 { margin-top: 1.4em; }
.prose h2:first-child { margin-top: 0; }

/* ---------- CTA / form ---------- */
.cta { background: var(--accent); color: #fff; border-radius: 16px; padding: 44px; display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: center; }
.cta h2 { color: #fff; margin-bottom: .3em; }
.cta p { margin: 0; color: #ffe6d6; }
.cta .btn { background: #fff; color: var(--accent-dark) !important; border-color: #fff; }
.cta .btn:hover { background: var(--dark); color: #fff !important; border-color: var(--dark); }

.form { display: grid; gap: 16px; }
.form label { display: grid; gap: 6px; font-weight: 600; font-size: 15px; }
.form input, .form textarea, .form select {
  font: inherit; font-size: 16px; font-weight: 400;
  padding: 12px 14px; border: 1px solid #cfd4da; border-radius: 8px; background: #fff; color: var(--ink);
  width: 100%;
}
.form input:focus, .form textarea:focus, .form select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.form textarea { min-height: 130px; resize: vertical; }
.form small { color: var(--muted); font-weight: 400; }

.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: 16px 0; border-bottom: 1px solid var(--line); }
.contact-list li:first-child { padding-top: 0; }
.contact-list b { display: block; }
.contact-list span { color: var(--muted); font-size: 15px; }

/* ---------- footer ---------- */
.footer { background: var(--dark); color: #9aa4ae; padding: 56px 0 28px; font-size: 15px; }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; }
.footer h4 { color: #fff; font-size: 15px; margin: 0 0 14px; text-transform: uppercase; letter-spacing: .08em; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 8px; }
.footer a { color: #c5ccd3; text-decoration: none; }
.footer a:hover { color: #fff; }
.footer .logo { color: #fff; margin-bottom: 14px; }
.footer .logo small { color: #9aa4ae; }
.footer .bottom { border-top: 1px solid #2f3640; margin-top: 40px; padding-top: 22px; display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; font-size: 14px; }

.to-top {
  position: fixed; right: 18px; bottom: 18px; z-index: 40;
  width: 44px; height: 44px; border-radius: 50%; border: 0;
  background: var(--dark); color: #fff; cursor: pointer;
  opacity: 0; pointer-events: none; transition: opacity .2s;
}
.to-top.is-visible { opacity: .85; pointer-events: auto; }

/* ---------- responsive ---------- */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .hero .wrap { grid-template-columns: 1fr; }
  .hero-art { max-width: 520px; }
}
@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 8px 16px 16px;
    display: none;
  }
  .nav.is-open { display: flex; }
  .nav a { padding: 12px; }
  .nav .btn { margin: 8px 0 0; }
  .split, .model { grid-template-columns: 1fr; gap: 28px; }
  .model .art { max-width: 320px; }
  .footer .cols { grid-template-columns: 1fr; gap: 28px; }
  .cta { grid-template-columns: 1fr; padding: 32px 24px; }
}
@media (max-width: 600px) {
  body { font-size: 16px; }
  .wrap { padding: 0 16px; }
  .section { padding: 52px 0; }
  .grid-2, .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 64px; }
  .hero-facts { gap: 24px; }
  .topbar .hide-sm { display: none; }
}