@font-face {
    font-family:Onest;
    src:url('/assets/fonts/onest-variable.woff') format('woff');
    font-weight:100 900;
    font-style:normal;
    font-display:swap
}
:root {
    --paper:#fff;
    --ground:#f4f3f1;
    --surface:#eeece8;
    --ink:#262522;
    --muted:#64615b;
    --accent:#c83f0e;
    --flame:#ed4b12;
    --on-accent:#fff;
    --night:#252521;
    --night-ink:#f9f8f5;
    --night-muted:#ccc8bf;
    --font:Onest,Arial,sans-serif;
    --small:.875rem;
    --body:1rem;
    --lead:clamp(1.2rem,1rem + .6vw,1.5rem);
    --head:clamp(2rem,1.4rem + 2vw,3.4rem);
    --display:clamp(3rem,1.5rem + 4.7vw,6rem);
    --gutter:clamp(20px,2.4vw,40px);
    --max:1600px;
    --ease:cubic-bezier(.22,.65,.25,1)
}
* {
    box-sizing:border-box
}
html {
    scroll-behavior:smooth;
    scroll-padding-top:110px
}
body {
    margin:0;
    background:var(--paper);
    color:var(--ink);
    font-family:var(--font);
    font-size:var(--body);
    line-height:1.6;
    font-kerning:normal;
    text-rendering:optimizeLegibility
}
button,input,select,textarea {
    font:inherit
}
button,a {
    -webkit-tap-highlight-color:transparent
}
button {
    cursor:pointer
}
a {
    color:inherit;
    text-decoration:none
}
a:hover {
    text-decoration-color:currentColor
}
img {
    display:block;
    max-width:100%;
    height:auto
}
figure {
    margin:0
}
h1,h2,h3,h4,p,ul,ol,dl {
    margin:0
}
h1,h2,h3,h4 {
    font-weight:500;
    line-height:1.12;
    letter-spacing:-.045em;
    text-wrap:balance;
    hyphens:none
}
h1 {
    font-size:var(--display)
}
h2 {
    font-size:var(--head)
}
h3 {
    font-size:var(--lead);
    letter-spacing:-.025em
}
p {
    max-width:68ch;
    text-wrap:pretty
}
p+p {
    margin-top:1em
}
ul,ol {
    padding-left:1.2em
}
li+li {
    margin-top:.5em
}
strong,b {
    font-weight:600
}
small {
    font-size:var(--small)
}
::selection {
    background:var(--flame);
    color:var(--paper)
}
:focus-visible {
    outline:3px solid var(--accent);
    outline-offset:5px
}
button:disabled {
    cursor:default
}
button {
    color:inherit
}
section[id],div[id] {
    scroll-margin-top:110px
}
.wrap {
    width:min(100%,var(--max));
    padding-inline:var(--gutter);
    margin-inline:auto
}
.section {
    padding-block:clamp(64px,7vw,108px)
}
.muted,.caption {
    color:var(--muted)
}
.caption {
    font-size:var(--small);
    line-height:1.5
}
.lead {
    font-size:var(--lead);
    line-height:1.45
}
.text-link {
    color:var(--accent);
    text-decoration:underline;
    text-underline-offset:.22em;
    text-decoration-thickness:1px
}
.text-link:hover {
    color:var(--ink)
}
.button {
    display:inline-flex;
    justify-content:center;
    align-items:center;
    gap:12px;
    padding:15px 24px;
    min-height:52px;
    background:var(--accent);
    color:var(--on-accent);
    font-size:var(--body);
    font-weight:500;
    border:0;
    line-height:1.35;
    transition:background .2s,transform .2s
}
.button:hover {
    background:var(--ink)
}
.button:active {
    transform:translateY(2px)
}
.button.secondary {
    background:var(--surface);
    color:var(--ink)
}
.button.secondary:hover {
    background:var(--ink);
    color:var(--paper)
}
.actions {
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:20px
}
.skip-link {
    position:absolute;
    left:20px;
    top:0;
    z-index:100;
    transform:translateY(-150%);
    background:var(--ink);
    color:var(--paper);
    padding:12px 20px
}
.skip-link:focus {
    transform:translateY(10px)
}
/* Общая шапка: содержимое находится в Library/header.lbi. */
.site-header {
    position:sticky;
    top:0;
    z-index:40;
    background:var(--paper)
}
.header-inner {
    min-height:96px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:28px
}
.brand {
    display:flex;
    align-items:center;
    gap:20px;
    flex-shrink:0
}
.brand-name {
    font-size:29px;
    font-weight:600;
    line-height:1;
    letter-spacing:-.055em
}
.brand-description {
    font-size:13px;
    line-height:1.4;
    max-width:16ch;
    color:var(--muted)
}
.desktop-nav {
    display:flex;
    align-items:center;
    gap:clamp(18px,2vw,32px);
    font-size:14px
}
.desktop-nav>a,.nav-disclosure>summary {
    padding-block:12px
}
.desktop-nav>a:hover,.desktop-nav>a[aria-current],.nav-disclosure[open]>summary {
    color:var(--accent)
}
.header-email {
    font-size:14px;
    color:var(--accent)
}
.nav-disclosure {
    position:relative
}
.nav-disclosure summary {
    cursor:pointer;
    list-style:none;
    display:flex;
    align-items:center;
    gap:8px
}
.nav-disclosure summary::-webkit-details-marker {
    display:none
}
.nav-disclosure summary:after {
    content:'';
    width:6px;
    height:6px;
    border-right:1.5px solid currentColor;
    border-bottom:1.5px solid currentColor;
    transform:rotate(45deg) translateY(-2px);
    transition:transform .2s
}
.nav-disclosure[open] summary:after {
    transform:rotate(225deg)
}
.nav-dropdown {
    position:absolute;
    top:100%;
    left:-22px;
    min-width:280px;
    background:var(--paper);
    padding:14px 22px 22px;
    box-shadow:0 12px 25px #26252218;
    display:grid;
    gap:3px
}
.nav-dropdown a {
    padding:10px 0
}
.nav-dropdown a:hover,.nav-dropdown a[aria-current] {
    color:var(--accent)
}
.mobile-menu {
    display:none
}
/* Главная: предметная фотография и крупное имя модели. */
.home-hero {
    display:grid;
    grid-template-columns:48% 52%;
    background:var(--ground);
    min-height:610px
}
.hero-visual {
    padding:32px 38px 26px;
    display:flex;
    flex-direction:column;
    justify-content:space-between;
    gap:22px;
    background:var(--ground);
    min-width:0
}
.hero-image-link {
    display:block;
    align-self:stretch
}
.hero-photo {
    width:100%;
    height:430px;
    object-fit:contain;
    mix-blend-mode:multiply
}
.gallery-bottom {
    display:flex;
    gap:20px;
    align-items:center;
    justify-content:space-between
}
.gallery-picks {
    display:flex;
    gap:6px
}
.gallery-pick {
    width:58px;
    height:60px;
    min-width:44px;
    min-height:44px;
    border:0;
    padding:6px;
    background:var(--paper);
    transition:background .2s
}
.gallery-pick[aria-pressed=true] {
    background:var(--surface);
    box-shadow:inset 0 -3px var(--accent)
}
.gallery-pick:hover {
    background:var(--surface)
}
.gallery-pick img {
    width:100%;
    height:100%;
    object-fit:contain;
    mix-blend-mode:multiply
}
.gallery-caption {
    max-width:23ch
}
.hero-copy {
    padding:64px clamp(34px,4vw,68px) 50px 42px;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:flex-start;
    gap:26px;
    min-width:0
}
.hero-copy h1 {
    font-size:clamp(5.4rem,9.2vw,9rem);
    line-height:.95;
    letter-spacing:-.065em;
    white-space:nowrap
}
.hero-subtitle {
    font-size:clamp(1.5rem,2.4vw,2.2rem);
    line-height:1.2;
    max-width:21ch
}
.hero-copy .hero-description {
    max-width:38ch
}
.hero-copy .caption {
    max-width:44ch
}
.hero-copy .button {
    margin-top:4px
}
.home-facts {
    display:grid;
    grid-template-columns:1fr .9fr 1.25fr;
    gap:28px;
    padding-block:34px
}
.home-facts dt {
    font-size:clamp(1.45rem,2vw,2rem);
    line-height:1.2;
    letter-spacing:-.035em
}
.home-facts dd {
    margin:9px 0 0;
    color:var(--muted);
    font-size:var(--small)
}
.section-heading {
    display:flex;
    align-items:baseline;
    justify-content:space-between;
    gap:40px;
    margin-bottom:38px
}
.section-heading p {
    max-width:42ch;
    color:var(--muted)
}
.execution-grid {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px
}
.execution {
    display:grid;
    grid-template-columns:40% 60%;
    background:var(--ground);
    min-height:300px;
    transition:background .2s
}
.execution:hover {
    background:var(--surface)
}
.execution-photo {
    padding:30px 10px 30px 24px;
    display:flex;
    align-items:center;
    justify-content:center
}
.execution-photo img {
    height:218px;
    width:100%;
    object-fit:contain;
    mix-blend-mode:multiply;
    transition:transform .4s var(--ease)
}
.execution:hover .execution-photo img {
    transform:translateY(-5px)
}
.execution-text {
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:start;
    padding:30px 28px 30px 20px;
    gap:15px
}
.execution-text h3 {
    font-size:clamp(1.4rem,2vw,1.9rem)
}
.execution-text p {
    font-size:var(--small);
    max-width:32ch
}
.execution-text .execution-link {
    font-size:var(--small);
    color:var(--accent);
    margin-top:2px
}
.execution.marine {
    background:var(--surface)
}
.execution.marine:hover {
    background:var(--ground)
}
.purpose-band {
    background:var(--night);
    color:var(--night-ink)
}
.purpose-band .wrap {
    display:grid;
    grid-template-columns:37% 63%;
    gap:0
}
.purpose-title {
    padding-right:55px
}
.purpose-title p {
    margin-top:24px;
    color:var(--night-muted);
    max-width:30ch
}
.purpose-rows {
    display:grid;
    gap:34px
}
.purpose-row {
    display:grid;
    grid-template-columns:95px 1fr;
    gap:24px
}
.purpose-row .initials {
    font-size:3.3rem;
    line-height:1;
    letter-spacing:-.05em;
    color:var(--night-ink)
}
.purpose-row h3 {
    margin-bottom:10px
}
.purpose-row p {
    color:var(--night-muted);
    max-width:55ch
}
.purpose-row .text-link {
    color:var(--night-ink)
}
.construction-preview {
    display:grid;
    grid-template-columns:1fr 1.25fr;
    align-items:center;
    gap:7vw
}
.construction-preview h2 {
    max-width:14ch
}
.construction-preview p {
    margin-block:26px
}
.diagram-preview img {
    max-height:380px;
    object-fit:contain;
    width:100%
}
.document-band {
    background:var(--ground)
}
.document-layout {
    display:grid;
    grid-template-columns:1fr 1.4fr;
    gap:7vw;
    align-items:start
}
.document-layout h2 {
    max-width:15ch
}
.document-layout p {
    margin-top:24px
}
.document-links {
    display:grid;
    gap:16px
}
.download-row {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:24px;
    padding:25px 28px;
    background:var(--paper);
    transition:background .2s
}
.download-row:hover {
    background:var(--surface)
}
.download-row strong {
    display:block;
    font-size:var(--lead);
    font-weight:500;
    line-height:1.25;
    letter-spacing:-.025em
}
.download-row small {
    display:block;
    color:var(--muted);
    margin-top:7px
}
.download-format {
    font-size:var(--small);
    white-space:nowrap;
    color:var(--accent)
}
/* Внутренние страницы: вся информация находится в обычном HTML. */
.breadcrumbs {
    display:flex;
    flex-wrap:wrap;
    gap:8px 12px;
    list-style:none;
    padding:0;
    margin:0;
    font-size:var(--small);
    color:var(--muted)
}
.breadcrumbs li+li {
    margin:0
}
.breadcrumbs li+li:before {
    content:'/';
    margin-right:12px;
    color:var(--muted)
}
.breadcrumbs a:hover {
    color:var(--accent)
}
.page-hero {
    padding-top:30px;
    padding-bottom:52px
}
.page-hero .breadcrumbs {
    margin-bottom:37px
}
.page-intro {
    display:grid;
    grid-template-columns:1.25fr 1fr;
    align-items:end;
    gap:6vw
}
.page-intro h1 {
    max-width:23ch
}
.page-intro .lead {
    max-width:41ch
}
.product-hero {
    display:grid;
    grid-template-columns:47% 53%;
    background:var(--ground);
    min-height:440px
}
.product-hero figure {
    padding:35px;
    display:flex;
    align-items:center;
    justify-content:center
}
.product-hero img {
    width:100%;
    height:345px;
    object-fit:contain;
    mix-blend-mode:multiply
}
.product-summary {
    padding:44px 46px 44px 10px;
    display:flex;
    flex-direction:column;
    justify-content:center;
    gap:23px
}
.quick-specs {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px
}
.quick-specs dt {
    font-size:var(--small);
    color:var(--muted);
    margin-bottom:5px
}
.quick-specs dd {
    margin:0;
    font-size:var(--lead);
    letter-spacing:-.025em;
    line-height:1.3
}
.article-layout {
    display:grid;
    grid-template-columns:240px minmax(0,1fr);
    gap:clamp(40px,6vw,100px);
    padding-top:64px;
    padding-bottom:88px
}
.page-index {
    align-self:start;
    position:sticky;
    top:127px;
    display:grid;
    gap:16px;
    font-size:var(--small);
    padding-bottom:25px
}
.page-index a {
    line-height:1.4
}
.page-index a:hover,.page-index a.active {
    color:var(--accent)
}
.page-index .index-title {
    font-weight:600;
    margin-bottom:7px
}
.page-index .index-bottom {
    color:var(--accent);
    margin-top:14px
}
.article {
    min-width:0
}
.article section+section {
    margin-top:68px
}
.article h2 {
    font-size:clamp(1.9rem,1.3rem + 1.9vw,2.8rem);
    margin-bottom:25px;
    max-width:27ch
}
.article h3 {
    margin:30px 0 15px;
    max-width:38ch
}
.article p,.article li {
    max-width:72ch
}
.article ul,.article ol {
    margin-top:20px
}
.article .actions {
    margin-top:28px
}
.article .caption {
    margin-top:15px
}
.notice {
    background:var(--ground);
    padding:24px 28px;
    margin-top:25px
}
.notice strong {
    display:block;
    margin-bottom:7px
}
.notice p {
    max-width:70ch
}
.fact-grid {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px
}
.fact-block {
    padding:26px 28px;
    background:var(--ground)
}
.fact-block h3 {
    margin:0 0 13px
}
.fact-block p {
    font-size:var(--body)
}
.data-table {
    width:100%;
    border-collapse:collapse;
    font-size:var(--small);
    font-variant-numeric:tabular-nums;
    text-align:left;
    margin-top:24px
}
.data-table caption {
    text-align:left;
    font-size:var(--body);
    font-weight:500;
    margin-bottom:14px
}
.data-table th {
    font-weight:500;
    background:var(--surface);
    vertical-align:bottom
}
.data-table th,.data-table td {
    padding:14px 16px;
    line-height:1.45
}
.data-table tbody tr:nth-child(even) {
    background:var(--ground)
}
.data-table td.numeric {
    text-align:right
}
.data-table th.numeric {
    text-align:right
}
.table-scroll {
    overflow-x:auto;
    overscroll-behavior-inline:contain
}
.table-scroll:focus-visible {
    outline-offset:2px
}
.table-scroll .data-table {
    min-width:610px
}
.table-note {
    font-size:var(--small);
    color:var(--muted);
    margin-top:14px
}
.diagram {
    margin:25px 0 0
}
.diagram>a {
    display:block;
    background:var(--ground);
    padding:20px
}
.diagram img {
    width:100%;
    max-height:500px;
    object-fit:contain;
    mix-blend-mode:multiply
}
.diagram figcaption {
    font-size:var(--small);
    color:var(--muted);
    margin-top:12px
}
.photo-pair {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-top:28px
}
.photo-pair figure {
    background:var(--ground);
    padding:24px
}
.photo-pair img {
    height:260px;
    object-fit:contain;
    width:100%;
    mix-blend-mode:multiply
}
.photo-pair figcaption {
    font-size:var(--small);
    color:var(--muted);
    margin-top:15px
}
.matrix-links {
    display:grid;
    grid-template-columns:1fr 1fr;
    gap:20px;
    margin-top:28px
}
.matrix {
    background:var(--ground);
    padding:24px
}
.matrix img {
    height:290px;
    width:100%;
    object-fit:contain;
    mix-blend-mode:multiply
}
.matrix figcaption {
    font-size:var(--body);
    margin-top:18px
}
.matrix .caption {
    margin-top:8px
}
.formula {
    display:block;
    background:var(--ground);
    padding:25px 28px;
    margin-top:23px;
    font-size:var(--lead);
    letter-spacing:-.02em;
    font-variant-numeric:tabular-nums;
    overflow-wrap:anywhere
}
.definition-list {
    display:grid;
    gap:0;
    margin-top:24px
}
.definition-list>div {
    display:grid;
    grid-template-columns:150px 1fr;
    gap:24px;
    padding:18px 22px
}
.definition-list>div:nth-child(odd) {
    background:var(--ground)
}
.definition-list dt {
    font-weight:500
}
.definition-list dd {
    margin:0
}
.code-example {
    padding:28px;
    background:var(--ground);
    font-size:clamp(1.05rem,1.5vw,1.3rem);
    font-weight:500;
    overflow-wrap:anywhere;
    letter-spacing:-.02em
}
.code-example p {
    font-weight:400;
    font-size:var(--body);
    margin-top:15px
}
.related {
    background:var(--ground)
}
.related .section-heading {
    margin-bottom:30px
}
.related-list {
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:24px
}
.related-list a {
    font-size:var(--lead);
    line-height:1.3;
    padding:12px 0
}
.related-list a:hover {
    color:var(--accent)
}
.doc-sections {
    padding-block:12px 88px
}
.doc-group+.doc-group {
    margin-top:62px
}
.doc-group h2 {
    margin-bottom:25px
}
.doc-list {
    display:grid;
    gap:12px
}
.doc-list .download-row {
    background:var(--ground)
}
.doc-list .download-row:hover {
    background:var(--surface)
}
.bim-files {
    margin-top:28px;
    background:var(--ground);
    padding:24px 28px
}
.bim-files summary {
    cursor:pointer;
    font-weight:500
}
.bim-files ul {
    margin-top:20px
}
.bim-files li {
    font-size:var(--small);
    overflow-wrap:anywhere
}
.doc-source {
    margin-top:24px;
    max-width:78ch
}
.source-note {
    font-size:var(--small);
    color:var(--muted);
    margin-top:24px
}
.contact-grid {
    display:grid;
    grid-template-columns:1.1fr 1fr;
    gap:8vw;
    padding-bottom:90px
}
.contact-main {
    background:var(--ground);
    padding:40px
}
.contact-main h2 {
    font-size:2rem;
    margin-bottom:28px
}
.contact-email {
    display:block;
    font-size:clamp(1.3rem,2.3vw,2.2rem);
    letter-spacing:-.04em;
    line-height:1.2;
    color:var(--accent);
    overflow-wrap:anywhere
}
.contact-phone {
    display:block;
    margin-top:22px;
    font-size:var(--lead);
    letter-spacing:-.02em
}
.contact-main p {
    margin-top:24px
}
.contact-main .actions {
    margin-top:30px
}
.contact-address {
    padding-top:20px
}
.contact-address h2 {
    font-size:2rem;
    margin-bottom:25px
}
.contact-address h3 {
    margin:28px 0 10px
}
.policy-page{min-height:50vh}
.policy-page .page-intro{display:block}
.policy-content{overflow-wrap:anywhere}
@media(max-width:720px){.policy-page .page-intro h1{font-size:clamp(1.4rem,5.5vw,2.7rem)}}
.policy-content{max-width:80ch;padding-bottom:80px;line-height:1.65}
.policy-content h2{margin:32px 0 16px;font-size:1.6rem}
.policy-content p{margin:16px 0}
.policy-content ul,.policy-content ol{padding-left:24px;margin:16px 0}
.legal {
    font-size:var(--small);
    margin-top:30px;
    color:var(--muted)
}
.empty-page {
    padding-block:70px 130px;
    min-height:60vh
}
.empty-page h1 {
    font-size:clamp(5rem,15vw,13rem);
    color:var(--accent)
}
.empty-page p {
    margin:25px 0 35px;
    font-size:var(--lead)
}
/* Общий подвал: содержимое находится в Library/footer.lbi. */
.site-footer {
    background:var(--night);
    color:var(--night-ink)
}
.footer-top {
    display:grid;
    grid-template-columns:1fr 1.1fr;
    gap:6vw;
    align-items:start;
    padding-top:65px;
    padding-bottom:45px
}
.footer-top h2 {
    font-size:var(--head);
    max-width:15ch
}
.footer-contact .footer-email {
    font-size:clamp(1.4rem,2.7vw,2.6rem);
    line-height:1.2;
    letter-spacing:-.045em;
    overflow-wrap:anywhere
}
.footer-contact p {
    margin-top:17px;
    color:var(--night-muted);
    font-size:var(--small);
    max-width:53ch
}
.footer-contacts-row {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:22px;
    flex-wrap:wrap;
    margin-top:22px;
    font-size:var(--body)
}
.copy-email {
    border:0;
    background:transparent;
    color:var(--night-muted);
    padding:8px 0;
    font-size:var(--small);
    text-decoration:underline;
    text-underline-offset:.22em
}
.copy-email:hover {
    color:var(--night-ink)
}
.copy-status {
    font-size:var(--small);
    min-height:1.5em;
    color:var(--night-muted);
    margin-top:5px
}
.footer-bottom {
    display:flex;
    justify-content:space-between;
    align-items:start;
    gap:40px;
    padding-bottom:30px;
    padding-top:18px;
    color:var(--night-muted);
    font-size:13px;
    line-height:1.6
}
.footer-bottom p {
    max-width:66ch
}
.footer-bottom .footer-company {
    color:var(--night-ink)
}
.footer-bottom a {
    text-decoration:underline;
    text-underline-offset:.18em
}
.footer-legal {
    display:flex;
    gap:20px;
    flex-wrap:wrap;
    justify-content:flex-end
}
/* Локальные интерактивные дополнения с обычными ссылками в основе. */
.image-dialog {
    border:0;
    background:var(--paper);
    color:var(--ink);
    padding:0;
    width:min(1200px,94vw);
    max-height:94vh
}
.image-dialog::backdrop {
    background:#252521ce
}
.image-dialog header {
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:20px;
    padding:18px 24px
}
.image-dialog .dialog-title {
    font-size:var(--small);
    max-width:70ch
}
.dialog-close {
    background:var(--ground);
    border:0;
    width:44px;
    height:44px;
    font-size:28px;
    line-height:1;
    flex-shrink:0
}
.dialog-image {
    max-height:78vh;
    width:100%;
    object-fit:contain;
    padding:0 20px 20px
}
.motion-ready .reveal.is-visible {
    animation:arrive .7s var(--ease) both
}
@keyframes arrive {
    from {
        transform:translateY(16px)
    }
    to {
        transform:translateY(0)
    }
    
}
@media(min-width:1601px) {
    .home-hero {
        min-height:670px
    }
    .hero-photo {
        height:490px
    }
    
}
@media(max-width:1180px) {
    .header-email {
        display:none
    }
    .brand-description {
        display:none
    }
    .header-inner {
        min-height:84px
    }
    .hero-copy {
        padding-left:30px;
        padding-right:32px
    }
    .hero-visual {
        padding-inline:25px
    }
    .hero-photo {
        height:390px
    }
    .home-hero {
        min-height:565px
    }
    .home-facts {
        grid-template-columns:1fr .8fr 1.2fr
    }
    .execution-text {
        padding-right:22px
    }
    .article-layout {
        grid-template-columns:200px minmax(0,1fr);
        gap:44px
    }
    .product-summary {
        padding-right:32px
    }
    .footer-top {
        gap:40px
    }
    .section-heading {
        gap:30px
    }
    
}
@media(max-width:900px) {
    .desktop-nav {
        gap:18px;
        font-size:13px
    }
    .home-hero {
        grid-template-columns:46% 54%;
        min-height:530px
    }
    .hero-photo {
        height:340px
    }
    .hero-copy {
        gap:22px;
        padding:40px 26px
    }
    .hero-copy h1 {
        font-size:clamp(5rem,10vw,7rem)
    }
    .hero-subtitle {
        font-size:1.5rem
    }
    .gallery-bottom {
        display:block
    }
    .gallery-caption {
        margin-top:12px
    }
    .execution-grid {
        gap:16px
    }
    .execution {
        grid-template-columns:37% 63%;
        min-height:265px
    }
    .execution-photo {
        padding:25px 4px 25px 15px
    }
    .execution-photo img {
        height:165px
    }
    .execution-text {
        padding:25px 20px 25px 15px;
        gap:12px
    }
    .purpose-band .wrap {
        grid-template-columns:32% 68%
    }
    .purpose-title {
        padding-right:28px
    }
    .purpose-row {
        grid-template-columns:65px 1fr;
        gap:20px
    }
    .purpose-row .initials {
        font-size:2.8rem
    }
    .document-layout {
        gap:36px
    }
    .download-row {
        padding:23px
    }
    .page-intro {
        gap:35px
    }
    .article-layout {
        grid-template-columns:170px minmax(0,1fr);
        gap:30px
    }
    .page-index {
        font-size:13px
    }
    .product-hero {
        grid-template-columns:45% 55%
    }
    .product-hero figure {
        padding:25px
    }
    .product-summary {
        padding:30px 30px 30px 10px
    }
    .quick-specs {
        gap:18px
    }
    .quick-specs dd {
        font-size:1.2rem
    }
    .fact-grid {
        grid-template-columns:1fr
    }
    .related-list {
        grid-template-columns:1fr 1fr
    }
    .contact-grid {
        gap:35px
    }
    .contact-main {
        padding:30px
    }
    .definition-list>div {
        grid-template-columns:110px 1fr;
        gap:20px
    }
    .footer-top {
        grid-template-columns:1fr 1.2fr
    }
    
}
@media(max-width:720px) {
    html {
        scroll-padding-top:96px
    }
    .header-inner {
        min-height:78px;
        gap:18px
    }
    .brand-name {
        font-size:26px
    }
    .desktop-nav {
        display:none
    }
    .header-email {
        display:block;
        font-size:13px
    }
    .mobile-menu {
        display:block
    }
    .mobile-menu summary {
        list-style:none;
        cursor:pointer;
        font-size:14px;
        padding:12px 0
    }
    .mobile-menu summary::-webkit-details-marker {
        display:none
    }
    .mobile-links {
        position:absolute;
        left:0;
        right:0;
        top:100%;
        background:var(--paper);
        padding:20px var(--gutter) 30px;
        display:grid;
        grid-template-columns:1fr 1fr;
        gap:0 20px;
        box-shadow:0 12px 25px #26252218
    }
    .mobile-links a {
        padding:12px 0;
        font-size:15px
    }
    .mobile-links .mobile-mail {
        grid-column:1/-1;
        color:var(--accent);
        margin-top:10px
    }
    .header-email {
        display:none
    }
    .home-hero {
        grid-template-columns:1fr;
        min-height:0
    }
    .hero-copy {
        grid-row:1;
        padding:36px 27px 32px;
        gap:23px
    }
    .hero-copy h1 {
        font-size:clamp(5rem,15vw,7.5rem);
        line-height:.95
    }
    .hero-subtitle {
        font-size:1.65rem;
        max-width:24ch
    }
    .hero-copy .hero-description {
        max-width:46ch
    }
    .hero-visual {
        padding:20px 27px 28px;
        background:var(--surface)
    }
    .hero-photo {
        height:350px
    }
    .gallery-bottom {
        display:flex;
        gap:25px
    }
    .gallery-caption {
        margin:0;
        max-width:21ch
    }
    .gallery-pick {
        width:50px;
        height:52px
    }
    .home-facts {
        grid-template-columns:1fr 1fr;
        gap:26px;
        padding-block:30px
    }
    .home-facts>div:last-child {
        grid-column:1/-1
    }
    .home-facts dt {
        font-size:1.6rem
    }
    .section-heading {
        display:block;
        margin-bottom:28px
    }
    .section-heading p {
        margin-top:20px
    }
    .execution-grid {
        grid-template-columns:1fr
    }
    .execution {
        grid-template-columns:38% 62%;
        min-height:255px
    }
    .execution-photo {
        padding:24px 8px 24px 20px
    }
    .execution-photo img {
        height:200px
    }
    .execution-text {
        padding:26px 25px 26px 15px
    }
    .execution-text h3 {
        font-size:1.65rem
    }
    .execution-text p {
        font-size:15px
    }
    .purpose-band .wrap {
        grid-template-columns:1fr;
        gap:38px
    }
    .purpose-title {
        padding:0
    }
    .purpose-title p {
        max-width:48ch
    }
    .purpose-rows {
        gap:30px
    }
    .purpose-row {
        grid-template-columns:65px 1fr
    }
    .construction-preview {
        grid-template-columns:1fr;
        gap:35px
    }
    .construction-preview h2 {
        max-width:20ch
    }
    .diagram-preview img {
        max-height:330px
    }
    .document-layout {
        grid-template-columns:1fr;
        gap:30px
    }
    .document-layout h2 {
        max-width:23ch
    }
    .document-layout p {
        margin-top:20px
    }
    .download-row {
        padding:23px
    }
    .page-hero {
        padding-top:22px;
        padding-bottom:32px
    }
    .page-hero .breadcrumbs {
        margin-bottom:30px
    }
    .page-intro {
        grid-template-columns:1fr;
        gap:24px
    }
    .page-intro h1 {
        font-size:clamp(2.7rem,7.8vw,4rem);
        max-width:23ch
    }
    .page-intro .lead {
        font-size:1.2rem;
        max-width:49ch
    }
    .product-hero {
        grid-template-columns:1fr
    }
    .product-hero figure {
        padding:25px 35px 10px
    }
    .product-hero img {
        height:300px
    }
    .product-summary {
        padding:25px 27px 32px;
        gap:26px
    }
    .quick-specs {
        gap:23px
    }
    .quick-specs dd {
        font-size:1.3rem
    }
    .article-layout {
        display:block;
        padding-top:35px;
        padding-bottom:62px
    }
    .page-index {
        position:static;
        display:flex;
        flex-wrap:wrap;
        gap:12px 22px;
        padding-bottom:30px;
        font-size:14px
    }
    .page-index .index-title {
        display:none
    }
    .page-index .index-bottom {
        margin:0
    }
    .article section+section {
        margin-top:52px
    }
    .article h2 {
        font-size:2rem;
        margin-bottom:23px
    }
    .article h3 {
        font-size:1.35rem
    }
    .notice {
        padding:22px
    }
    .fact-block {
        padding:23px
    }
    .data-table th,.data-table td {
        padding:12px
    }
    .table-scroll .data-table {
        min-width:580px
    }
    .table-scroll .data-table.compact {
        min-width:0
    }
    .photo-pair {
        gap:12px
    }
    .photo-pair figure {
        padding:20px 15px
    }
    .photo-pair img {
        height:210px
    }
    .diagram>a {
        padding:12px
    }
    .matrix-links {
        grid-template-columns:1fr
    }
    .matrix img {
        height:340px
    }
    .definition-list>div {
        grid-template-columns:95px 1fr;
        gap:20px;
        padding:18px 16px
    }
    .definition-list dd {
        font-size:15px
    }
    .related-list {
        gap:20px
    }
    .related-list a {
        font-size:1.2rem
    }
    .doc-sections {
        padding-bottom:62px
    }
    .doc-group+.doc-group {
        margin-top:48px
    }
    .doc-group h2 {
        font-size:2rem
    }
    .contact-grid {
        grid-template-columns:1fr;
        gap:35px;
        padding-bottom:60px
    }
    .contact-main {
        padding:28px
    }
    .contact-email {
        font-size:1.7rem
    }
    .contact-address {
        padding-top:0
    }
    .footer-top {
        grid-template-columns:1fr;
        gap:30px;
        padding-top:48px;
        padding-bottom:30px
    }
    .footer-top h2 {
        font-size:2.3rem;
        max-width:20ch
    }
    .footer-contact .footer-email {
        font-size:clamp(1.55rem,5vw,2.2rem)
    }
    .footer-bottom {
        display:block;
        gap:20px;
        padding-top:14px
    }
    .footer-legal {
        justify-content:start;
        margin-top:20px
    }
    .image-dialog {
        width:96vw
    }
    .image-dialog header {
        padding:14px 16px
    }
    .dialog-image {
        padding:0 8px 12px
    }
    
}
@media(max-width:390px) {
    .hero-copy {
        padding-inline:22px
    }
    .hero-copy h1 {
        font-size:4.7rem
    }
    .hero-subtitle {
        font-size:1.5rem
    }
    .hero-visual {
        padding-inline:22px
    }
    .hero-photo {
        height:300px
    }
    .gallery-bottom {
        align-items:start;
        gap:18px
    }
    .gallery-picks {
        gap:4px
    }
    .gallery-pick {
        width:44px;
        height:46px;
        padding:4px
    }
    .gallery-caption {
        font-size:13px;
        max-width:17ch
    }
    .execution {
        grid-template-columns:34% 66%
    }
    .execution-photo {
        padding-left:14px
    }
    .execution-photo img {
        height:165px
    }
    .execution-text {
        padding-right:20px
    }
    .execution-text h3 {
        font-size:1.45rem
    }
    .purpose-row {
        grid-template-columns:50px 1fr;
        gap:15px
    }
    .purpose-row .initials {
        font-size:2.4rem
    }
    .photo-pair img {
        height:170px
    }
    .page-intro h1 {
        font-size:2.6rem
    }
    .definition-list>div {
        grid-template-columns:80px 1fr;
        gap:14px
    }
    .download-row {
        padding:20px;
        gap:16px
    }
    .download-row strong {
        font-size:1.1rem
    }
    .download-format {
        font-size:13px
    }
    .contact-email {
        font-size:1.5rem
    }
    
}
@media(max-width:540px) {
    .related-list {
        grid-template-columns:1fr
    }
    .mobile-links {
        grid-template-columns:1fr
    }
    .mobile-links a {
        padding:9px 0
    }
    .mobile-links .mobile-mail {
        margin-top:4px
    }
    .related-list a {
        padding:4px 0
    }
    .execution-text p {
        overflow-wrap:anywhere
    }
    
}
@media(max-width:720px) {
    .page-intro,.product-hero {
        grid-template-columns:minmax(0,1fr)
    }
    .page-intro>*,.product-hero>*,.quick-specs>* {
        min-width:0
    }
    .quick-specs {
        grid-template-columns:repeat(2,minmax(0,1fr))
    }
    
}
@media(max-width:390px) {
    .page-intro h1 {
        font-size:2.2rem
    }
    .quick-specs {
        grid-template-columns:minmax(0,1fr)
    }
    .definition-list>div {
        grid-template-columns:minmax(0,1fr);
        gap:7px
    }
    
}
@media(prefers-reduced-motion:reduce) {
    html {
        scroll-behavior:auto
    }
    *,*:before,*:after {
        animation:none!important;
        transition:none!important
    }
    
}
@media print {
    .site-header,.page-index,.site-footer,.related,.button,.actions,.gallery-picks,.image-dialog {
        display:none!important
    }
    body {
        font-size:11pt
    }
    .wrap {
        padding:0;
        width:100%
    }
    .article-layout {
        display:block;
        padding:20px 0
    }
    .article section+section {
        margin-top:25px
    }
    .page-hero {
        padding:0 0 20px
    }
    .page-intro {
        display:block
    }
    .page-intro h1 {
        font-size:30pt
    }
    .page-intro .lead {
        margin-top:15px
    }
    .product-hero {
        min-height:0
    }
    .product-hero img {
        height:180px
    }
    .product-summary {
        padding:20px
    }
    .table-scroll {
        overflow:visible
    }
    .table-scroll .data-table {
        min-width:0
    }
    .data-table {
        font-size:9pt
    }
    .section {
        padding-block:25px
    }
    a {
        color:inherit
    }
    .notice,.fact-block {
        break-inside:avoid
    }
    h2,h3 {
        break-after:avoid
    }
    .diagram img {
        max-height:300px
    }
    .home-hero {
        display:block
    }
    .hero-copy {
        padding:20px
    }
    .hero-visual {
        display:none
    }
    .execution-grid {
        grid-template-columns:1fr 1fr
    }
    .execution {
        min-height:0
    }
    .execution-photo img {
        height:120px
    }
    
}

/* Engineering views are individual SVG drawings; legends are editable HTML. */
.drawing-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:28px}
.engineering-figure{min-width:0;margin:0;border:1px solid #dedbd5;background:#fff;display:flex;flex-direction:column}
.engineering-figure>figcaption{display:flex;align-items:start;justify-content:space-between;gap:16px;padding:19px 22px;border-bottom:1px solid #e9e6e0;font-size:1rem;line-height:1.4;font-weight:500;color:var(--ink)}
.engineering-figure>figcaption>span{max-width:34ch}
.drawing-enlarge{font-size:.78rem;line-height:1.6;color:var(--accent);white-space:nowrap;flex-shrink:0;font-weight:400}
.engineering-canvas{display:flex;align-items:center;justify-content:center;padding:22px;min-height:265px;flex:1;background:#fff}
.engineering-canvas img{width:100%;height:285px;object-fit:contain;mix-blend-mode:normal}
.drawing-grid--tall .engineering-canvas img{height:440px}
.drawing-grid--wide{grid-template-columns:1fr}
.drawing-grid--wide .engineering-canvas img{height:auto;max-height:400px;max-width:700px}
.drawing-description{font-size:.875rem;line-height:1.55;color:var(--muted);padding:0 22px 22px;max-width:none}
.drawing-legend{margin-top:24px;border-top:1px solid #d8d5ce;border-bottom:1px solid #d8d5ce}
.drawing-legend summary{padding:18px 0;cursor:pointer;font-weight:500;font-size:1rem}
.drawing-legend dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px;padding:0 0 18px}
.drawing-legend dl>div{display:grid;grid-template-columns:32px minmax(0,1fr);gap:12px;padding:9px 0;align-content:start;border-top:1px solid #eeece7;font-size:.875rem;line-height:1.5}
.drawing-legend dt{font-weight:600;color:var(--accent)}
.drawing-legend dd{margin:0}
.article .drawing-legend+ h3,.article .drawing-grid+ h3{margin-top:44px}
.technical-matrix{margin-top:18px;border:1px solid #d8d5ce}
.technical-matrix>summary{display:flex;align-items:baseline;justify-content:space-between;gap:20px;padding:22px 24px;cursor:pointer;font-size:1.15rem;line-height:1.3;list-style:none}
.technical-matrix>summary::-webkit-details-marker{display:none}
.technical-matrix>summary:before{content:'+';color:var(--accent);font-size:1.5rem;line-height:1;align-self:center}
.technical-matrix[open]>summary:before{content:'−'}
.technical-matrix>summary>span:first-child{margin-right:auto}
.technical-matrix[open]>summary{border-bottom:1px solid #d8d5ce}
.matrix-unit{color:var(--muted);font-size:.875rem;white-space:nowrap}
.matrix-body{padding:20px 24px 24px;min-width:0}
.matrix-toolbar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;margin-bottom:18px;font-size:.875rem}
.matrix-toolbar p{color:var(--muted);max-width:45ch}
.matrix-toolbar label{display:flex;align-items:center;gap:10px;white-space:nowrap}
.matrix-toolbar select{padding:8px 34px 8px 10px;min-height:44px;border:1px solid #bbb6ad;background:#fff;border-radius:0;color:var(--ink);font-size:.875rem}
.matrix-toolbar [hidden]{display:none}
.matrix-scroll{overflow:auto;max-height:600px;overscroll-behavior:contain;border:1px solid #ddd9d1;isolation:isolate;scrollbar-color:#b1aaa0 #f5f3ee;scrollbar-width:thin}
.web-matrix{border-collapse:separate;border-spacing:0;width:max-content;min-width:100%;font-size:.875rem;font-variant-numeric:tabular-nums;line-height:1.35;text-align:right}
.web-matrix th,.web-matrix td{min-width:68px;padding:12px 11px;border-bottom:1px solid #e8e4dc;border-right:1px solid #e8e4dc;white-space:nowrap}
.web-matrix td{background:#fff}
.web-matrix tbody tr:nth-child(even) td{background:#f8f7f4}
.web-matrix thead th{position:sticky;top:0;z-index:3;background:#ece9e3;font-weight:600;text-align:right}
.web-matrix thead th:first-child{left:0;z-index:5;min-width:100px;text-align:left}
.web-matrix tbody th{position:sticky;left:0;z-index:2;background:#f0ede7;color:#262522;font-weight:600;min-width:100px;text-align:left}
.web-matrix tbody tr:hover td{background:#fbefe6}
.web-matrix .cassette-cell{background:#f5e9de;color:#80502c;font-size:.8rem;font-weight:500;text-align:center}
.web-matrix tbody tr:nth-child(even) .cassette-cell{background:#f0e1d2}
.web-matrix .cassette-cell--3{color:#a33d13}
.web-matrix .cassette-cell--onsite,.web-matrix tbody tr:nth-child(even) .cassette-cell--onsite{background:#dfbea2;box-shadow:inset 0 2px #a45227}
.web-matrix .no-data,.web-matrix tbody tr:nth-child(even) .no-data{color:#9b968d;background:#faf9f7;text-align:center}
.web-matrix [hidden]{display:none}
.matrix-note,.matrix-source{font-size:.875rem;line-height:1.55;color:var(--muted);margin-top:17px;max-width:90ch}
.matrix-source{margin-top:10px;font-size:.8rem}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
.diagram-preview img[src$='.svg']{max-height:430px;width:100%;object-fit:contain;mix-blend-mode:normal}
.product-hero img[src$='.svg']{height:auto;max-height:350px;width:100%;object-fit:contain;mix-blend-mode:normal}
.certificate-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:64px 48px;padding-bottom:100px}
.certificate-card{min-width:0;border-top:1px solid #d9d6d0;padding-top:24px}
.certificate-heading{display:flex;align-items:baseline;justify-content:space-between;gap:16px}
.certificate-heading h2{font-size:clamp(24px,3vw,36px);margin:0}
.certificate-heading>span,.certificate-card>p{color:var(--muted);font-size:14px}
.certificate-card>p{margin:10px 0 22px}
.certificate-page{display:block;text-decoration:none}
.certificate-cover{background:var(--ground);padding:24px;text-align:center}
.certificate-cover img{display:block;width:auto;height:360px;max-width:100%;object-fit:contain;margin:0 auto 16px;transition:transform .2s}
.certificate-cover:hover img{transform:scale(1.02)}
.certificate-cover>span{font-size:14px;color:var(--accent)}
.certificate-pages{display:flex;gap:12px;margin-top:14px}
.certificate-pages:empty{display:none}
.certificate-extra{background:var(--ground);padding:10px;max-width:115px;text-align:center}
.certificate-extra img{display:block;width:100%;height:105px;object-fit:contain;margin-bottom:8px}
.certificate-extra>span{font-size:12px}
.certificate-download{margin-top:22px;display:inline-block}
.certificate-download span{font-size:14px;color:var(--muted)}
.certificate-dialog{padding:0;border:0;background:#242421;color:#fff;width:min(1200px,96vw);max-width:96vw;height:94dvh;max-height:94dvh;overflow:hidden}
.certificate-dialog[open]{display:flex;flex-direction:column}
.certificate-dialog::backdrop{background:#111d}
.certificate-toolbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 20px;border-bottom:1px solid #ffffff25;flex-shrink:0}
.certificate-toolbar p{margin:0;font-size:16px}
.certificate-toolbar .certificate-counter{font-size:12px;color:#bbb;margin-top:3px}
.certificate-tools{display:flex;align-items:center;gap:10px}
.certificate-tools button,.certificate-tools a,.certificate-controls button{border:1px solid #ffffff40;background:transparent;color:#fff;padding:9px 13px;font:inherit;font-size:13px;white-space:nowrap;text-decoration:none;cursor:pointer}
.certificate-tools [data-cert-close]{font-size:28px;line-height:1;padding:5px 11px}
.certificate-tools button:hover,.certificate-tools a:hover,.certificate-controls button:not(:disabled):hover{background:#ffffff15}
.certificate-view{flex:1;min-height:0;overflow:auto;text-align:center;padding:16px;overscroll-behavior:contain;touch-action:pan-y pinch-zoom}
.certificate-image{display:block;height:100%;width:100%;object-fit:contain;max-width:none;cursor:zoom-in}
.certificate-view.is-zoomed{text-align:left;touch-action:pan-x pan-y pinch-zoom}
.certificate-view.is-zoomed .certificate-image{height:auto;width:auto;max-width:none;margin:auto;cursor:zoom-out}
.certificate-controls{display:flex;align-items:center;justify-content:center;gap:24px;padding:10px 20px;flex-shrink:0;border-top:1px solid #ffffff25;font-size:13px}
.certificate-controls button:disabled{opacity:.3;cursor:default}
@media(max-width:720px){
 .certificate-grid{grid-template-columns:1fr;gap:40px;padding-bottom:60px}
 .certificate-cover{padding:20px 14px}
 .certificate-cover img{height:320px}
 .certificate-dialog{width:100vw;max-width:100vw;height:100dvh;max-height:100dvh;margin:0}
 .certificate-toolbar{padding:12px;gap:12px;flex-wrap:wrap}
 .certificate-toolbar>div:first-child{flex:1;min-width:160px}
 .certificate-tools{width:100%;gap:8px}
 .certificate-tools [data-cert-close]{margin-left:auto}
 .certificate-view{padding:10px}
 .certificate-controls{padding:10px 12px;gap:20px}
}
.image-dialog:has(.dialog-image[src$='.svg']){width:min(1100px,96vw)}
.image-dialog .dialog-image[src$='.svg']{max-height:none;height:75vh;width:100%;object-fit:contain;background:#fff}
@media(max-width:1000px){.drawing-grid{grid-template-columns:1fr}.drawing-legend dl{grid-template-columns:1fr}.engineering-canvas img{height:330px}.drawing-grid--tall .engineering-canvas img{height:440px}}
@media(max-width:540px){.engineering-figure>figcaption{padding:16px;gap:12px;font-size:.95rem;flex-wrap:wrap}.engineering-canvas{padding:16px;min-height:220px}.engineering-canvas img{height:245px}.drawing-grid--tall .engineering-canvas img{height:400px}.drawing-description{padding:0 16px 16px}.technical-matrix>summary{padding:18px 15px;font-size:1rem;gap:12px}.matrix-body{padding:16px 12px}.matrix-toolbar{display:block}.matrix-toolbar label{margin-top:12px}.matrix-unit{font-size:.75rem;white-space:normal;max-width:65px}.web-matrix{font-size:.8125rem}.web-matrix th,.web-matrix td{min-width:63px;padding:11px 9px}.web-matrix thead th:first-child,.web-matrix tbody th{min-width:88px}.matrix-scroll{max-height:480px}.drawing-legend dl>div{font-size:.875rem}}
@media print{.drawing-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.drawing-enlarge{display:none}.engineering-figure{break-inside:avoid}.drawing-grid--tall .engineering-canvas img{height:260px}.engineering-canvas img{height:200px}.technical-matrix{break-inside:avoid}.matrix-toolbar label{display:none}.matrix-scroll{max-height:none}.web-matrix{font-size:8pt}.web-matrix th,.web-matrix td{padding:4px;min-width:0}}
@media(min-width:1001px){.drawing-grid--tall .engineering-canvas img{height:auto;max-height:760px}}