:root{--blue:#0756a3;--navy:#071d35;--red:#e3222e;--ink:#122232;--muted:#647180;--line:#dce3e9;--bg:#f4f7f9;--white:#fff}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:Inter,Arial,sans-serif;background:#fff}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}.wrap{width:min(1180px,88vw);margin:auto}
html[lang="en"] .site-header{height:88px;display:grid;grid-template-columns:250px 1fr auto auto;align-items:center;gap:24px;padding:0 4vw;border-bottom:1px solid var(--line);background:#fff;position:relative;z-index:10}html[lang="en"] .site-header .brand img{display:block;width:205px;height:auto}html[lang="en"] .site-header nav{display:flex;align-items:center;justify-content:center;gap:25px;font-weight:750;font-size:.86rem}html[lang="en"] .site-header nav a{padding:12px 0;border-bottom:2px solid transparent}html[lang="en"] .site-header nav a:hover,html[lang="en"] .site-header nav a[aria-current=page]{color:var(--blue);border-color:var(--blue)}html[lang="en"] .site-header nav>a[href*="/smart-seal"]{color:var(--red)!important}html[lang="en"] .site-header .authorized-badge{display:flex;flex-direction:column;align-items:center;justify-content:center;min-width:105px}html[lang="en"] .site-header .authorized-badge img{display:block;width:88px;height:auto}html[lang="en"] .site-header .authorized-badge span{margin-top:3px;font-size:.58rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--navy)}html[lang="en"] .site-header .header-call{border-left:1px solid var(--line);padding-left:28px}html[lang="en"] .site-header .header-call span{display:block;font-size:.68rem;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}html[lang="en"] .site-header .header-call strong{font-family:'Barlow Condensed',Arial,sans-serif;font-size:1.25rem}
html[lang="en"] .language-switcher{display:inline-flex;align-items:center;gap:6px;margin-left:-10px;padding-left:18px;border-left:1px solid var(--line);font-size:.7rem;font-weight:800;letter-spacing:.06em;color:#8794a0;white-space:nowrap}html[lang="en"] .language-switcher a{color:#8794a0!important}html[lang="en"] .language-switcher a:hover{color:var(--blue)!important}html[lang="en"] .language-switcher a.active{color:var(--navy)!important}html[lang="en"] .language-switcher span{color:#b6c0c8}
.page-intro{padding:72px 0 46px;background:linear-gradient(125deg,#f7fafc 0%,#eef4f8 65%,#e5eef5 100%);border-bottom:1px solid var(--line)}.eyebrow{display:block;color:var(--blue);font-size:.74rem;font-weight:850;letter-spacing:.12em;margin-bottom:13px}.page-intro h1{font-size:clamp(2.45rem,5vw,4.7rem);line-height:1.02;letter-spacing:-.045em;margin:0 0 19px;max-width:900px}.page-intro p{max-width:780px;color:var(--muted);font-size:1.08rem;line-height:1.75;margin:0}.crumb{display:flex;gap:9px;align-items:center;color:var(--muted);font-size:.82rem;margin-bottom:29px}.crumb a{color:var(--blue);font-weight:750}.crumb span{opacity:.6}
.hub-main{padding:58px 0 88px}.section-head{display:flex;align-items:end;justify-content:space-between;gap:25px;margin-bottom:25px}.section-head h2{font-size:clamp(1.7rem,3vw,2.45rem);margin:0;letter-spacing:-.025em}.section-head p{color:var(--muted);max-width:560px;line-height:1.6;margin:0}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;margin-bottom:62px}.category-card{border:1px solid var(--line);padding:23px;background:#fff;min-height:142px}.category-card.active{border-top:3px solid var(--blue)}.category-card.muted{background:var(--bg);color:#7a8793}.category-card small{color:var(--blue);font-weight:850;letter-spacing:.08em}.category-card h3{font-size:1.08rem;margin:13px 0 8px}.category-card p{font-size:.88rem;line-height:1.5;color:var(--muted);margin:0}.guide-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.guide-card{border:1px solid var(--line);background:#fff;display:flex;flex-direction:column;min-height:330px;transition:.2s}.guide-card:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(7,29,53,.09);border-color:#b6c9da}.guide-mark{height:92px;background:var(--navy);display:flex;align-items:center;padding:24px;color:#fff;font-size:1.9rem;font-weight:850}.guide-body{padding:25px;display:flex;flex:1;flex-direction:column}.guide-body small{color:var(--blue);font-weight:850;letter-spacing:.08em}.guide-body h3{font-size:1.35rem;line-height:1.25;margin:12px 0}.guide-body p{color:var(--muted);font-size:.93rem;line-height:1.65;margin:0 0 22px}.guide-link{color:var(--blue);font-weight:850;margin-top:auto}
.article-main{padding:52px 0 90px}.answer{border-left:5px solid var(--blue);background:var(--bg);padding:25px 28px;font-size:1.09rem;line-height:1.75;margin-bottom:38px}.article-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:50px}.article-body h2{font-size:1.75rem;margin:44px 0 16px;letter-spacing:-.02em}.article-body h3{font-size:1.15rem;margin:27px 0 10px}.article-body p,.article-body li{color:#4f5e6b;line-height:1.75}.article-body ul,.article-body ol{padding-left:22px}.article-body li+li{margin-top:8px}.toc{border:1px solid var(--line);padding:22px;margin-bottom:31px}.toc strong{display:block;margin-bottom:12px}.toc a{display:block;color:var(--blue);font-size:.92rem;padding:7px 0;border-bottom:1px solid #eef2f5}.toc a:last-child{border:0}.side-card{position:sticky;top:24px;border-top:4px solid var(--blue);background:var(--bg);padding:24px}.side-card h3{margin:0 0 10px}.side-card p{font-size:.9rem;color:var(--muted);line-height:1.6}.btn{display:inline-flex;align-items:center;justify-content:center;background:var(--blue);color:#fff;font-weight:850;padding:14px 19px;margin-top:8px}.btn:hover,.btn:focus-visible{background:var(--navy)}.visual-placeholder{border:1px dashed #93a7b8;background:#f7fafc;padding:38px 24px;text-align:center;margin:24px 0}.visual-placeholder b{display:block;color:var(--navy);font-size:1.05rem;margin-bottom:8px}.visual-placeholder span{color:var(--muted);font-size:.88rem;line-height:1.6}.technical-figure{margin:28px 0;background:#fff;border:1px solid var(--line);padding:18px}.technical-figure__button{display:block;width:100%;padding:0;border:0;background:transparent;cursor:zoom-in}.technical-figure img{display:block;width:100%;height:auto;object-fit:contain;max-width:100%}.technical-figure figcaption{margin-top:13px;color:var(--muted);font-size:.84rem;line-height:1.55}.technical-figure figcaption a{color:var(--blue);font-weight:750;text-decoration:underline;text-underline-offset:2px}.technical-figure__hint{display:block;margin-top:7px;color:var(--blue);font-size:.78rem;font-weight:800}.technical-dialog{width:min(94vw,1200px);max-height:92vh;padding:44px 18px 18px;border:0;background:#fff;box-shadow:0 24px 80px rgba(6,32,55,.3)}.technical-dialog::backdrop{background:rgba(3,18,31,.78)}.technical-dialog img{display:block;width:100%;height:auto;max-height:calc(92vh - 62px);object-fit:contain}.technical-dialog__close{position:absolute;right:10px;top:9px;border:0;background:var(--navy);color:#fff;width:34px;height:34px;font-size:1.4rem;cursor:pointer}.notice{background:#fff7e8;border-left:4px solid #e7a52d;padding:20px 22px;margin:24px 0;color:#5f5138;line-height:1.65}.faq details{border-top:1px solid var(--line);padding:17px 0}.faq details:last-child{border-bottom:1px solid var(--line)}.faq summary{font-weight:800;cursor:pointer}.faq p{margin:12px 0 0}.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.product-card{border:1px solid var(--line);padding:18px;background:#fff}.product-card small{color:var(--blue);font-weight:800}.product-card h3{margin:9px 0 7px;font-size:1rem}.product-card a{color:var(--blue);font-weight:800;font-size:.88rem}.related{display:flex;flex-wrap:wrap;gap:10px}.related a{border:1px solid var(--line);padding:11px 14px;font-weight:750;color:var(--blue);font-size:.9rem}.cta-band{margin-top:50px;background:var(--navy);color:#fff;padding:34px;display:flex;align-items:center;justify-content:space-between;gap:25px}.cta-band h2{margin:0 0 8px;color:#fff}.cta-band p{margin:0;color:#bed0df}.cta-band .btn{margin:0;white-space:nowrap}
footer{background:#041526;color:#aebdcc;padding:30px 6vw;display:flex;align-items:center;gap:26px;font-size:.78rem}footer img{width:150px;filter:brightness(0) invert(1);opacity:.85}footer p{margin-right:auto}footer a{color:#fff;font-weight:750}
.tr-site-footer nav{margin-left:auto;display:flex;flex-wrap:wrap;justify-content:flex-end;gap:17px;font-size:.72rem}.tr-site-footer nav a{margin:0;color:#fff}.tr-site-footer nav a:hover{color:#7fc3ff}@media(max-width:1100px){.tr-site-footer{align-items:flex-start;flex-wrap:wrap}.tr-site-footer nav{width:100%;margin-left:0;justify-content:flex-start}}@media(max-width:900px){.tr-site-footer nav{display:grid;grid-template-columns:1fr 1fr;width:100%;gap:0 20px}.tr-site-footer nav a{padding:8px 0}.language-switcher{margin:2px 0 0;padding:16px 0 0;border-left:0;border-top:1px solid var(--line);font-size:.78rem}.language-switcher a{display:inline;padding:0}.language-switcher a.active{color:var(--navy)!important}}@media(max-width:480px){.tr-site-footer nav{grid-template-columns:1fr}}
@media(max-width:940px){.category-grid,.guide-grid{grid-template-columns:repeat(2,1fr)}.article-layout{grid-template-columns:1fr}.side-card{position:static}.product-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:620px){.wrap{width:min(100% - 40px,1180px)}.page-intro{padding:43px 0 34px}.page-intro h1{font-size:2.35rem}.page-intro p{font-size:1rem}.hub-main,.article-main{padding:38px 0 65px}.section-head{display:block}.section-head p{margin-top:10px}.category-grid,.guide-grid,.product-grid{grid-template-columns:1fr}.category-grid{gap:10px}.category-card{min-height:auto}.article-layout{gap:28px}.answer{padding:20px;font-size:1rem}.visual-placeholder{padding:28px 18px}.cta-band{display:block;padding:27px 22px}.cta-band .btn{margin-top:20px;width:100%}footer{align-items:flex-start;flex-wrap:wrap}footer p{width:100%;order:2}}
.table-wrap{overflow-x:auto;margin:25px 0;border:1px solid var(--line)}.technical-table{width:100%;border-collapse:collapse;min-width:650px}.technical-table th,.technical-table td{padding:14px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line);line-height:1.55}.technical-table th{background:var(--navy);color:#fff;font-size:.88rem}.technical-table td{color:#4f5e6b;font-size:.91rem}.technical-table tr:last-child td{border-bottom:0}.checklist{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;padding:0!important;list-style:none}.checklist li{margin:0!important;border:1px solid var(--line);padding:15px 16px 15px 43px;position:relative;background:#fff}.checklist li:before{content:'✓';position:absolute;left:16px;top:14px;color:var(--blue);font-weight:900}.figure-pair{display:grid;grid-template-columns:1fr 1fr;gap:15px;margin:28px 0}.figure-pair .technical-figure{margin:0}@media(max-width:620px){.checklist,.figure-pair{grid-template-columns:1fr}.technical-table{min-width:580px}}
html[lang="en"] .site-header .menu-btn{display:none;border:0;background:transparent;color:var(--navy);font-size:1.65rem;cursor:pointer}@media(max-width:900px){html[lang="en"] .site-header{height:76px;grid-template-columns:1fr auto;padding:0 22px;align-items:center;gap:0}html[lang="en"] .site-header .brand img{width:170px}html[lang="en"] .site-header .authorized-badge,html[lang="en"] .site-header .header-call{display:none}html[lang="en"] .site-header .menu-btn{display:block;margin-left:auto}html[lang="en"] .site-header nav{display:none!important;position:absolute;z-index:30;top:100%;left:0;right:0;flex-direction:column;align-items:stretch!important;gap:0!important;padding:12px 22px 20px;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 22px rgba(7,29,53,.12)}html[lang="en"] .site-header nav.open{display:flex!important}html[lang="en"] .site-header nav>a,html[lang="en"] .site-header .language-switcher{padding:10px 0}}@media(max-width:620px){html[lang="en"] .site-header{display:flex!important}html[lang="en"] .site-header nav{margin-top:0!important;grid-template-columns:none!important}}