:root{--navy:#14284b;--navy-2:#1f3a66;--ink:#1d2433;--muted:#525d70;--line:#dfe4ec;--bg:#fff;--bg-2:#f4f6f9;--bg-3:#eaeef4;--orange:#c4520f;--orange-hover:#a6450c;--orange-soft:#fdf0e7;--ok:#17663a;--warn:#9a3412;--radius:10px;--shadow:0 1px 2px #14284b0f,0 4px 14px #14284b0f;--font:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}*,:before,:after{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}body{font-family:var(--font);color:var(--ink);background:var(--bg);margin:0;font-size:1rem;line-height:1.6}img,svg{max-width:100%;height:auto;display:block}a{color:var(--navy-2);text-underline-offset:2px}a:hover{color:var(--orange-hover)}:focus-visible{outline:3px solid var(--orange);outline-offset:2px;border-radius:4px}h1,h2,h3{color:var(--navy);letter-spacing:-.01em;line-height:1.2}h1{margin:.2em 0 .4em;font-size:clamp(1.9rem,4.5vw,2.8rem)}h2{margin:1.8em 0 .6em;font-size:clamp(1.4rem,2.6vw,1.8rem)}h3{margin:1.4em 0 .4em;font-size:1.12rem}.sr-only{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;position:absolute!important}.skip-link{background:var(--navy);color:#fff;z-index:100;border-radius:6px;padding:8px 14px;position:absolute;top:8px;left:-999px}.skip-link:focus{color:#fff;left:8px}.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px}.section{padding:56px 0}.section--alt{background:var(--bg-2)}.section__head{flex-wrap:wrap;justify-content:space-between;align-items:end;gap:16px;margin-bottom:20px;display:flex}.section__head h2{margin:0}.section__head p{color:var(--muted);margin:.3em 0 0}.eyebrow{text-transform:uppercase;letter-spacing:.08em;color:var(--orange);font-size:.78rem;font-weight:700}.btn{cursor:pointer;border:2px solid #0000;border-radius:8px;justify-content:center;align-items:center;gap:8px;padding:12px 20px;font-family:inherit;font-size:1rem;font-weight:650;line-height:1.2;text-decoration:none;display:inline-flex}.btn--primary{background:var(--orange);color:#fff}.btn--primary:hover{background:var(--orange-hover);color:#fff}.btn--primary:disabled{opacity:.7;cursor:wait}.btn--ghost{color:#fff;background:#ffffff1a;border-color:#ffffffd9}.btn--ghost:hover{color:var(--navy);background:#fff}.btn--outline{border-color:var(--navy);color:var(--navy);background:#fff}.btn--outline:hover{background:var(--navy);color:#fff}.btn--block{width:100%}.link-arrow{font-weight:650;text-decoration:none}.link-arrow:hover{text-decoration:underline}.site-header{border-bottom:1px solid var(--line);z-index:50;background:#fff;position:sticky;top:0}.site-header__inner{align-items:center;gap:16px;height:60px;display:flex}.brand{color:var(--navy);flex-shrink:0;align-items:center;gap:10px;font-size:.98rem;font-weight:800;line-height:1.1;text-decoration:none;display:flex}.brand--light{color:#fff}.nav-desktop{margin-left:auto;display:none}.nav-desktop ul{gap:4px;margin:0;padding:0;list-style:none;display:flex}.nav-desktop a{color:var(--navy);border-radius:6px;padding:8px 10px;font-size:.94rem;font-weight:600;text-decoration:none;display:block}.nav-desktop a:hover{background:var(--bg-2);color:var(--orange-hover)}.header-search{display:none}.icon-btn{width:42px;height:42px;color:var(--navy);cursor:pointer;background:0 0;border:0;border-radius:8px;place-items:center;list-style:none;display:inline-grid}.icon-btn:hover{background:var(--bg-2)}.header-search-link{margin-left:auto}.nav-mobile{position:static}.nav-mobile summary::-webkit-details-marker{display:none}.nav-mobile__panel{border-bottom:1px solid var(--line);box-shadow:var(--shadow);background:#fff;padding:16px 20px 20px;position:absolute;top:60px;left:0;right:0}.nav-mobile__panel ul{grid-template-columns:1fr 1fr;gap:4px;margin:12px 0 0;padding:0;list-style:none;display:grid}.nav-mobile__panel a{color:var(--navy);background:var(--bg-2);border-radius:6px;padding:10px;font-weight:600;text-decoration:none;display:block}@media (min-width:1000px){.nav-desktop{display:block}.nav-mobile,.header-search-link{display:none}.header-search{width:210px;display:block}.brand__br{display:inline}}.search{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:8px;display:flex;overflow:hidden}.search input{min-width:0;color:var(--ink);background:0 0;border:0;flex:1;padding:13px 14px;font-family:inherit;font-size:1rem}.search input:focus{outline:none}.search:focus-within{outline:3px solid var(--orange);outline-offset:1px}.search__btn{background:var(--orange);color:#fff;cursor:pointer;border:0;place-items:center;padding:0 16px;display:grid}.search__btn:hover{background:var(--orange-hover)}.search--compact{box-shadow:none}.search--compact input{padding:8px 10px;font-size:.92rem}.search--compact .search__btn{background:var(--navy);padding:0 11px}.hero{color:#fff;background:var(--navy);position:relative;overflow:hidden}.hero__img{object-fit:cover;object-position:70% 60%;width:100%;height:100%;position:absolute;inset:0}.hero:after{content:"";background:linear-gradient(90deg,#0c1a34eb 0%,#0c1a34c7 45%,#0c1a3440 100%);position:absolute;inset:0}.hero__inner{z-index:1;max-width:1180px;margin:0 auto;padding:56px 20px 64px;position:relative}.hero h1{color:#fff;max-width:12ch;margin:.15em 0 .3em;font-size:clamp(2.2rem,6vw,3.6rem)}.hero__copy{color:#e8edf5;max-width:44ch;margin:0 0 24px;font-size:1.15rem}.hero__ctas{flex-wrap:wrap;gap:12px;margin-bottom:22px;display:flex}.hero .search{max-width:460px}.hero .eyebrow{color:#ffb489}@media (max-width:640px){.hero:after{background:#0c1a34cc}.hero__inner{padding:40px 20px 44px}}.quick-links{z-index:2;margin-top:-28px;position:relative}.quick-links ul{grid-template-columns:repeat(2,1fr);gap:10px;margin:0;padding:0;list-style:none;display:grid}.quick-links a{border:1px solid var(--line);border-radius:var(--radius);color:var(--navy);box-shadow:var(--shadow);background:#fff;align-items:center;gap:10px;height:100%;padding:14px;font-weight:650;text-decoration:none;display:flex}.quick-links a:hover{border-color:var(--orange)}.quick-links svg{color:var(--orange);flex-shrink:0}@media (min-width:760px){.quick-links ul{grid-template-columns:repeat(5,1fr)}}.table-wrap{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin:16px 0 24px;overflow-x:auto}.data-table{border-collapse:collapse;width:100%;min-width:560px;font-size:.95rem}.data-table caption{text-align:left;color:var(--navy);border-bottom:1px solid var(--line);background:var(--bg-2);padding:12px 14px;font-weight:700}.data-table th,.data-table td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:11px 14px}.data-table thead th{text-transform:uppercase;letter-spacing:.04em;color:var(--muted);background:#fff;font-size:.82rem}.data-table tbody tr:nth-child(2n){background:#fafbfd}.data-table tbody th{color:var(--navy);font-weight:650}.data-table tbody tr:last-child>*{border-bottom:0}.table-note{color:var(--muted);border-top:1px solid var(--line);margin:0;padding:10px 14px;font-size:.85rem}.card-grid{grid-template-columns:1fr;gap:16px;display:grid}@media (min-width:600px){.card-grid--3,.card-grid--4{grid-template-columns:repeat(2,1fr)}}@media (min-width:900px){.card-grid--3{grid-template-columns:repeat(3,1fr)}.card-grid--4{grid-template-columns:repeat(4,1fr)}}.card{border:1px solid var(--line);border-radius:var(--radius);background:#fff;flex-direction:column;transition:border-color .15s,box-shadow .15s;display:flex;position:relative;overflow:hidden}.card:hover{box-shadow:var(--shadow);border-color:#b9c3d3}.card__img{aspect-ratio:4/3;object-fit:cover;background:var(--bg-3);width:100%}.card__body{flex-direction:column;flex:1;gap:6px;padding:16px;display:flex}.card__body p{color:var(--muted);margin:0;font-size:.95rem}.card__title{margin:0;font-size:1.06rem}.card__title a{color:var(--navy);text-decoration:none}.stretched:after{content:"";position:absolute;inset:0}.card__more{color:var(--orange);margin-top:auto;padding-top:6px;font-size:.92rem;font-weight:650}.card__dims{color:var(--navy);font-size:.95rem;font-weight:700}.calc{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:14px;grid-template-columns:1fr;gap:20px;padding:20px;display:grid}@media (min-width:900px){.calc{grid-template-columns:1fr 1fr;gap:32px;padding:28px}}.calc__form{flex-direction:column;gap:18px;display:flex}.calc__label,.dim legend{color:var(--navy);margin-bottom:8px;font-size:.95rem;font-weight:700;display:block}.seg{background:var(--bg-3);border-radius:8px;gap:4px;padding:4px;display:inline-flex}.seg--wrap{flex-wrap:wrap;display:flex}.seg__btn{font:inherit;color:var(--navy);cursor:pointer;background:0 0;border:0;border-radius:6px;padding:9px 14px;font-size:.93rem;font-weight:600}.seg__btn:hover{background:#fff}.seg__btn[aria-checked=true],.seg__btn[aria-pressed=true]{background:var(--navy);color:#fff}.calc__dims{grid-template-columns:1fr 1fr;gap:14px;display:grid}.dim{border:0;min-width:0;margin:0;padding:0}.dim__row{gap:8px;display:flex}.dim__field{background:#fff;border:1px solid #b9c3d3;border-radius:8px;flex:1;align-items:center;min-width:0;display:flex}.dim__field:focus-within{outline:3px solid var(--orange);outline-offset:1px;border-color:var(--navy)}.dim__field input{width:100%;min-width:0;font:inherit;background:0 0;border:0;padding:11px 10px}.dim__field input:focus{outline:none}.dim__field input[aria-invalid=true]{color:var(--warn)}.dim__field span{color:var(--muted);padding:0 10px;font-size:.88rem}select,.field input,.field textarea{width:100%;font:inherit;color:var(--ink);background:#fff;border:1px solid #b9c3d3;border-radius:8px;padding:11px 12px}.field input[aria-invalid=true],.field select[aria-invalid=true]{border-color:var(--warn)}.hint{color:var(--muted);margin:6px 0 0;font-size:.88rem}.field-error{color:var(--warn);margin:6px 0 0;font-size:.86rem;font-weight:600}.calc__results{background:var(--bg-2);border-radius:12px;flex-direction:column;gap:12px;padding:18px;display:flex}.calc__results:focus{outline:none}.calc__results:focus-visible{outline:3px solid var(--orange)}.door-diagram{background:#fff;border-radius:8px;width:100%;max-width:420px;margin:0 auto}.dd-label{font:600 12px var(--font);fill:#14284b}.calc__dl{gap:6px;margin:0;display:grid}.calc__dl div{border-bottom:1px solid var(--line);justify-content:space-between;gap:10px;padding:6px 0;font-size:.95rem;display:flex}.calc__dl dt{color:var(--muted)}.calc__dl dd{color:var(--navy);text-align:right;margin:0;font-weight:650}.calc__notes{gap:8px;margin:0;padding:0;list-style:none;display:grid}.note{background:#fff;border-left:4px solid;border-radius:8px;margin:0;padding:10px 12px;font-size:.92rem}.note--ok{border-color:var(--ok)}.note--info{border-color:var(--navy-2)}.note--warn{border-color:var(--warn);background:#fff7f2}.calc__disclaimer{color:var(--muted);margin:0;font-size:.84rem}.ad-slot{width:100%;max-width:var(--ad-mw);min-height:var(--ad-mh);contain:layout;background:#fafbfc;border:1px dashed #cfd6e1;border-radius:6px;place-items:center;margin:32px auto;display:grid;position:relative}@media (min-width:768px){.ad-slot{max-width:var(--ad-dw);min-height:var(--ad-dh)}}.ad-slot__label{letter-spacing:.08em;text-transform:uppercase;color:#5b6678;font-size:.72rem}.guide-hero{background:var(--bg-2);border-bottom:1px solid var(--line);padding:22px 0 28px}.lede{color:#3a4558;max-width:70ch;margin:0 0 10px;font-size:1.15rem}.meta{color:var(--muted);margin:0;font-size:.86rem}.breadcrumbs ol{flex-wrap:wrap;gap:4px;margin:0 0 8px;padding:0;font-size:.88rem;list-style:none;display:flex}.breadcrumbs li+li:before{content:"/";color:#8a95a8;margin-right:4px}.breadcrumbs [aria-current]{color:var(--muted)}.guide-body{grid-template-columns:1fr;gap:32px;padding-top:28px;padding-bottom:48px;display:grid}@media (min-width:1000px){.guide-body{grid-template-columns:240px minmax(0,1fr)}.guide-aside .toc{position:sticky;top:80px}}.prose{min-width:0;max-width:820px}.prose>h2:first-child{margin-top:.2em}.prose p,.prose li{max-width:72ch}.prose ul,.prose ol{padding-left:1.3em}.prose li{margin:.3em 0}.toc{border:1px solid var(--line);border-radius:var(--radius);background:#fff;padding:14px 16px}.toc__title{text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 8px;font-size:.85rem}.toc ol{margin:0;padding-left:1.1em;font-size:.93rem}.toc li{margin:.35em 0}.callout{border:1px solid var(--line);border-left:4px solid var(--navy-2);background:var(--bg-2);border-radius:8px;margin:20px 0;padding:14px 16px}.callout--warn{border-left-color:var(--orange)}.callout__title{color:var(--navy);margin:0 0 4px;font-weight:700}.callout p{margin:.3em 0}.figure{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin:20px 0;padding:14px}.figure img{border-radius:6px;width:100%}.figure figcaption{color:var(--muted);margin-top:8px;font-size:.85rem}.clearance-diagram{width:100%}.cd-h{font:700 13px var(--font);fill:#14284b}.cd-l{font:600 12px var(--font);fill:#9a3f0b}.cd-m{font:500 11px var(--font);fill:#525d70}.steps{counter-reset:s;list-style:none;padding:0!important}.steps>li{counter-increment:s;max-width:none;padding:4px 0 10px 48px;position:relative}.steps>li:before{content:counter(s);background:var(--navy);color:#fff;border-radius:50%;place-items:center;width:34px;height:34px;font-weight:700;display:grid;position:absolute;top:2px;left:0}.checklist{list-style:none;padding:0!important}.checklist li{padding-left:28px;position:relative}.checklist li:before{content:"";border:2px solid var(--navy);border-radius:3px;width:12px;height:12px;position:absolute;top:.45em;left:4px}.related{margin-top:40px}.faq__list{gap:8px;display:grid}.faq__item{border:1px solid var(--line);background:#fff;border-radius:8px}.faq__item summary{cursor:pointer;color:var(--navy);justify-content:space-between;gap:12px;padding:14px 16px;font-weight:650;list-style:none;display:flex}.faq__item summary::-webkit-details-marker{display:none}.faq__item summary:after{content:"+";color:var(--orange);font-size:1.3rem;line-height:1}.faq__item[open] summary:after{content:"−"}.faq__item p{color:#3a4558;margin:0;padding:0 16px 16px}.pro-cta{background:var(--navy);color:#e8edf5;border-radius:12px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin:36px 0;padding:22px 24px;display:flex}.pro-cta h2{color:#fff;margin:0 0 4px;font-size:1.3rem}.pro-cta p{margin:0}.split{grid-template-columns:1fr;align-items:start;gap:28px;display:grid}@media (min-width:900px){.split{grid-template-columns:1.1fr .9fr}}.split--even{grid-template-columns:1fr}@media (min-width:900px){.split--even{grid-template-columns:1fr 1fr}}.pill-list{flex-wrap:wrap;gap:8px;margin:12px 0;padding:0;list-style:none;display:flex}.pill-list a{border:1px solid var(--line);background:#fff;border-radius:999px;padding:6px 12px;font-size:.9rem;text-decoration:none;display:inline-block}.resource-list{gap:10px;margin:0;padding:0;list-style:none;display:grid}.resource-list a{border:1px solid var(--line);color:var(--navy);background:#fff;border-radius:8px;padding:14px 16px;font-weight:650;text-decoration:none;display:block}.resource-list a span{color:var(--muted);font-size:.92rem;font-weight:400;display:block}.resource-list a:hover{border-color:var(--orange)}.lead-form{border:1px solid var(--line);box-shadow:var(--shadow);background:#fff;border-radius:12px;gap:14px;padding:20px;display:grid}.lead-form__grid{grid-template-columns:1fr;gap:14px;display:grid}@media (min-width:600px){.lead-form__grid{grid-template-columns:1fr 1fr}}.field label{color:var(--navy);margin-bottom:6px;font-size:.93rem;font-weight:650;display:block}.field--check{grid-template-columns:22px 1fr;align-items:start;gap:10px;display:grid}.field--check input{width:20px;height:20px;margin-top:2px}.field--check label{color:var(--ink);font-size:.9rem;font-weight:400}.field--check .field-error{grid-column:2}.optional{color:var(--muted);font-weight:400}.form-intro{color:var(--muted);margin:0;font-size:.9rem}.hp{width:1px;height:1px;position:absolute;left:-9999px;overflow:hidden}.site-footer{background:var(--navy);color:#b8c4d6;font-size:.94rem}.site-footer a{color:#dfe6f0;text-decoration:none}.site-footer a:hover{color:#fff;text-decoration:underline}.site-footer ul{margin:0;padding:0;list-style:none}.footer-main{grid-template-columns:1fr 1fr;gap:32px 24px;padding-top:48px;padding-bottom:40px;display:grid}.footer-brand{grid-column:1/-1}.footer-brand .brand{gap:10px;font-size:1rem}.footer-brand p{max-width:34ch;margin:12px 0 0;line-height:1.55}.footer-heading{color:#fff;letter-spacing:.08em;text-transform:uppercase;margin:0 0 14px;font-size:.8rem;font-weight:700}.footer-col li+li{margin-top:10px}.footer-col:last-child{grid-column:1/-1}.footer-col:last-child ul{flex-wrap:wrap;gap:10px 24px;display:flex}.footer-col:last-child li+li{margin-top:0}.footer-bar{border-top:1px solid #ffffff1f;font-size:.85rem}.footer-bar__inner{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 24px;padding-top:18px;padding-bottom:18px;display:flex}.footer-bar p{margin:0}.footer-bar ul{flex-wrap:wrap;gap:6px 20px;display:flex}.footer-bar a{color:#b8c4d6}@media (min-width:860px){.footer-main{grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-top:56px;padding-bottom:48px}.footer-brand,.footer-col:last-child{grid-column:auto}.footer-col:last-child ul{display:block}.footer-col:last-child li+li{margin-top:10px}}.search-results{gap:12px;padding:0;list-style:none;display:grid}.search-results li{border:1px solid var(--line);background:#fff;border-radius:8px;padding:14px 16px}.search-results a{font-size:1.05rem;font-weight:700}.search-results p{color:var(--muted);margin:.3em 0 0}.notfound{text-align:center;padding:60px 0}.notfound .search{max-width:460px;margin:20px auto}.card__diagram{place-items:center;padding:10px;display:grid}.card__diagram svg{background:0 0}.split>*{min-width:0}.brand__br{display:inline}@media (max-width:420px){.site-header__inner{gap:6px}.brand{gap:8px;font-size:.9rem}}@media (max-width:759px){.quick-links li:last-child{grid-column:span 2}}.brand--light svg{background:#fff;border-radius:6px;padding:3px}