@font-face {
  font-family: 'PT Serif';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fonts/pt-serif-cyrillic.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'PT Serif';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fonts/pt-serif-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url(/fonts/source-sans-3-cyrillic.woff2) format('woff2');
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: 'Source Sans 3';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url(/fonts/source-sans-3-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
:root {
  color-scheme: light;
  --canvas: #f6f7f8;
  --ink: #172128;
  --muted: #43535c;
  --green: #193b4b;
  --line: #d8e0e4;
  --display: 'PT Serif', Georgia, serif;
  --body: 'Source Sans 3', 'Segoe UI', Arial, sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--canvas); color: var(--ink); font: 17px/1.45 var(--body); }
a { color: inherit; text-decoration: none; }
button, input, select { font: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid #287185; outline-offset: 4px; }
.wrap { width: min(1180px, calc(100% - 96px)); margin-inline: auto; }
.header { display: flex; justify-content: space-between; align-items: center; min-height: 78px; border-bottom: 1px solid var(--line); gap: 16px; }
.brand { display: inline-flex; gap: 10px; align-items: center; font-weight: 700; font-size: 20px; }
nav { display: flex; gap: 29px; align-items: center; font-size: 15px; font-weight: 600; }
nav a:hover, .footer a:hover { text-decoration: underline; text-underline-offset: 4px; }
.hero { display: grid; grid-template-columns: 1.08fr 1fr; gap: 50px; align-items: center; padding-block: 44px 62px; }
h1, h2 { font-family: var(--display); margin: 0; font-weight: 700; }
h1 { font-size: clamp(47px, 5.1vw, 76px); line-height: 1.02; letter-spacing: -.064em; }
.hero-copy p { color: var(--muted); max-width: 355px; font-size: 19px; margin: 25px 0 29px; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 9px 16px; }
.hero-guide { display: none; color: var(--green); font-weight: 650; text-decoration: underline; text-underline-offset: 3px; }
.button { display: inline-flex; justify-content: space-between; align-items: center; gap: 21px; min-height: 48px; border: 1px solid transparent; border-radius: 6px; padding: 10px 16px; font-weight: 700; line-height: 1.25; }
.button-solid { color: #fff; background: var(--green); }
.button-solid:hover { background: #112e3c; }
.arrow { display: inline-block; vertical-align: middle; font-size: 0; flex: 0 0 13px; width: 13px; height: 13px; position: relative; }
.arrow::before { content: ''; position: absolute; right: 2px; top: 2px; width: 7px; height: 7px; border-top: 1.5px solid; border-right: 1.5px solid; }
.arrow::after { content: ''; position: absolute; width: 12px; border-top: 1.5px solid; right: 3px; top: 3px; transform: rotate(-45deg); transform-origin: right; }
.hero-caption small { margin-left: 7px; font-size: inherit; font-weight: 400; color: var(--muted); }
.hero-product { display: grid; justify-items: center; border-radius: 12px; background: #dce8ed; padding: 12px 25px 15px; overflow: hidden; }
.hero-product img { width: min(100%, 357px); height: auto; aspect-ratio: 1; padding: 24px; display: block; object-fit: contain; mix-blend-mode: multiply; }
.hero-caption { display: flex; justify-content: space-between; align-items: center; width: 100%; border-top: 1px solid #b8cbd4; padding: 12px 0 0; font-size: 15px; font-weight: 650; }
.catalog { border-top: 1px solid var(--line); padding-top: 26px; scroll-margin-top: 22px; }
.catalog-head { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px 18px; margin-bottom: 24px; }
h2 { font-size: clamp(37px, 4.2vw, 54px); line-height: 1.06; letter-spacing: -.05em; }
.benefits, .guide, .faq { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 24px 48px; border-top: 1px solid var(--line); padding-block: 32px 40px; }
.benefits h2, .guide h2, .faq h2, .evidence h2 { font-size: clamp(33px, 3.8vw, 48px); }
.benefits-copy { max-width: 610px; color: var(--muted); }
.benefits-copy p { margin: 0 0 10px; }
.benefits-copy p:last-child { margin-bottom: 0; }
.evidence { border-top: 1px solid var(--line); padding-block: 28px 34px; }
.section-intro { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 14px 48px; align-items: start; }
.section-intro p, .examples p, .evidence-note, .guide-steps p { color: var(--muted); margin: 0; }
.section-intro a, .faq p a { text-decoration: underline; text-underline-offset: 3px; }
.examples { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-block: 19px 12px; }
.examples > div { background: #e9eff2; border-radius: 8px; padding: 16px; }
.examples strong { display: block; color: var(--green); font-size: clamp(20px, 2.5vw, 29px); line-height: 1.15; margin-bottom: 7px; }
.evidence-note { font-size: 15px; }
.guide { margin-top: 54px; padding-bottom: 0; scroll-margin-top: 20px; }
.guide-steps { padding-left: 25px; margin: 0; }
.guide-steps li + li { margin-top: 15px; }
.guide-steps li::marker { font-weight: 700; color: var(--green); }
.guide-steps h3 { font-size: 20px; line-height: 1.2; margin: 0 0 4px; }
.faq { margin-top: 54px; padding-bottom: 0; scroll-margin-top: 20px; }
.faq-list { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); }
.faq summary { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 50px; padding: 9px 3px; font-weight: 650; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: ''; flex: 0 0 7px; height: 7px; margin-right: 5px; border: solid var(--green); border-width: 0 1.5px 1.5px 0; transform: translateY(-2px) rotate(45deg); }
.faq details[open] summary::after { transform: translateY(2px) rotate(225deg); }
.faq details p { margin: 0; padding: 0 24px 14px 3px; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.card { display: flex; flex-direction: column; min-width: 0; border: 1px solid #d7e0e6; border-radius: 10px; overflow: hidden; background: #fff; scroll-margin-top: 24px; }
.card:target { outline: 2px solid #287185; outline-offset: 4px; }
.card-image { position: relative; width: 100%; aspect-ratio: 1.32; background: #e9eff2; }
.card-image img { position: absolute; inset: 0; display: block; width: 100%; height: 100%; padding: 19px; object-fit: contain; mix-blend-mode: multiply; }
.card-copy { display: flex; flex-direction: column; flex: 1; padding: 17px; }
.spec { margin: 0 0 4px; color: var(--muted); font-size: 14px; }
.card h3 { margin: 0; font-size: 22px; line-height: 1.2; letter-spacing: -.025em; }
.card-desc { margin: 8px 0 17px; color: var(--muted); font-size: 15px; }
.card-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 12px; margin-top: auto; }
.product-link { color: var(--green); font-weight: 650; padding-block: 8px; }
.product-link:hover, .product-back:hover { text-decoration: underline; text-underline-offset: 3px; }
.button-card { flex: 1 0 auto; color: var(--green); border-color: #c4d4dc; font-size: 16px; }
.button-card:hover { background: #e9f0f4; border-color: var(--green); }
.request { background: #e0ebf0; border: 1px solid #d0dfe7; display: grid; grid-template-columns: 1fr 1.15fr; gap: 45px; padding: clamp(20px, 5vw, 65px); margin-top: 58px; border-radius: 12px; scroll-margin-top: 20px; }
.request-intro p { color: var(--muted); max-width: 285px; margin-top: 14px; }
form { position: relative; min-width: 0; }
form label { display: grid; min-width: 0; gap: 6px; font-size: 15px; font-weight: 650; }
.fields { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-block: 12px 15px; }
input, select { min-width: 0; width: 100%; height: 46px; border: 1px solid #aebfc9; border-radius: 5px; padding: 8px 10px; background: #fff; color: var(--ink); font-size: 16px; }
.button-submit { background: var(--green); color: #fff; width: 100%; }
.button-submit:hover { background: #112e3c; }
.button-submit:disabled { opacity: .7; cursor: wait; }
.trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
.form-note, .status { margin: 9px 0 0; font-size: 14px; color: var(--muted); }
.status { font-weight: 700; color: var(--green); }
.status[data-error=true] { color: #8a3026; }
.footer { display: flex; justify-content: space-between; gap: 12px; padding-block: 26px; color: var(--muted); font-size: 14px; }
.product { padding-block: 22px 34px; }
.product-back { display: inline-block; color: var(--green); font-weight: 650; margin-bottom: 19px; }
.product-hero { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); align-items: center; gap: clamp(20px, 5vw, 60px); padding-bottom: 34px; }
.product-photo { display: grid; place-items: center; background: #dce8ed; border-radius: 12px; }
.product-photo img { display: block; width: min(100%, 400px); height: auto; aspect-ratio: 1; padding: 28px; object-fit: contain; mix-blend-mode: multiply; }
.product-type, .product-description, .product-note { color: var(--muted); }
.product-type { margin: 0 0 9px; }
.product-summary h1 { font-size: clamp(39px, 5vw, 69px); overflow-wrap: anywhere; }
.product-spec { color: var(--green); margin: 12px 0 0; font-weight: 700; font-size: 21px; }
.product-description { margin: 10px 0 18px; }
.product-info { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); align-items: start; gap: 26px; border-top: 1px solid var(--line); padding-top: 25px; }
.product-info h2 { font-size: clamp(26px, 3.7vw, 42px); }
.product-specs { margin: 12px 0 0; }
.product-specs > div { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 8px 12px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.product-specs dt { color: var(--muted); }
.product-specs dd { margin: 0; font-weight: 650; }
.product-note { font-size: 15px; }
.product-aside { background: #e9eff2; border-radius: 10px; padding: clamp(16px, 3vw, 26px); }
.product-aside ul { padding-left: 20px; }
.product-aside h3 { margin: 16px 0 4px; font-size: 19px; }
.product-aside p { margin: 0 0 10px; color: var(--muted); }
.product-aside a { color: var(--green); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 900px) {
  .wrap { width: calc(100% - 52px); }
  .hero { gap: 26px; }
  .cards { gap: 13px; }
  .card-copy { padding: 13px; }
  .request { gap: 25px; }
}
@media (max-width: 680px) {
  .wrap { width: calc(100% - 32px); }
  .header { min-height: 61px; }
  .brand { font-size: 17px; gap: 7px; }
  .brand img { width: 29px; height: 29px; }
  nav { gap: 10px; font-size: 13px; }
  .nav-catalog, .nav-guide { display: none; }
  .hero-guide { display: inline-block; padding-block: 8px; }
  .hero { grid-template-columns: 1fr; padding-block: 29px 35px; }
  h1 { font-size: clamp(39px, 9vw, 56px); }
  .hero-copy p { margin: 13px 0 16px; font-size: 17px; }
  .hero-product { padding-inline: 16px; }
  .hero-product img { width: min(100%, 277px); }
  .catalog-head { margin-bottom: 16px; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .card-image img { padding: 11px; }
  .card h3 { font-size: 18px; }
  .card-desc { margin: 4px 0 13px; font-size: 13px; }
  .spec { font-size: 12px; }
  .button-card { padding: 7px; font-size: 14px; gap: 3px; }
  .product-link { font-size: 14px; }
  .product-hero, .product-info { grid-template-columns: 1fr; }
  .product-photo img { width: min(100%, 265px); padding: 19px; }
  .benefits, .guide, .faq, .section-intro, .examples { grid-template-columns: 1fr; gap: 14px; }
  .benefits, .guide, .faq { padding-top: 24px; }
  .benefits { padding-bottom: 26px; }
  .guide, .faq { margin-top: 32px; }
  .request { grid-template-columns: 1fr; gap: 9px; margin-top: 34px; }
  .request-intro p { margin: 8px 0 3px; }
}
@media (max-width: 350px) {
  .cards, .fields { grid-template-columns: 1fr; }
  nav .arrow { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }