.ojm30{--paper:#f6f2ea;--ink:#17211f;--muted:#5c6864;--line:rgba(23,33,31,.14);--brand:#0f5d58;--deep:#0a3e3b;--accent:#b57934;--serif:"Iowan Old Style",Georgia,serif;--sans:"Avenir Next",Arial,sans-serif;min-width:0}.ojm30 *{box-sizing:border-box}.ojm30 img{display:block;max-width:100%;height:auto}.ojm30 a{color:var(--brand)}.ojm30 .shell{width:min(1200px,calc(100vw - 56px));margin:auto}.ojm30 .site-header{position:sticky;top:0;z-index:20;background:rgba(246,242,234,.94);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.ojm30 .header-inner{min-height:82px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:30px}.ojm30 .brand{font-family:var(--serif);font-size:1.4rem;font-weight:850;letter-spacing:.09em;text-decoration:none;color:var(--ink)}.ojm30 nav{justify-self:center;display:flex;gap:27px}.ojm30 nav a{text-decoration:none;color:#46514d;font-size:.9rem}.ojm30 .header-cta{padding:11px 19px;border-radius:999px;background:var(--brand);color:#fff;text-decoration:none;font-weight:800}.ojm30 .layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:clamp(34px,5vw,68px);align-items:start}.ojm30 .layout>*{min-width:0}.ojm30 .hero .eyebrow,.ojm30 .eyebrow{margin:0;color:var(--accent);font-size:.74rem;font-weight:850;letter-spacing:.16em;text-transform:uppercase}.ojm30 .hero h1{max-width:820px;margin:14px 0 0;font-family:var(--serif);font-size:clamp(3rem,5vw,4.6rem);line-height:.98;letter-spacing:-.04em}.ojm30 .lead{max-width:790px;margin:22px 0 0;color:#3f4a46;font-size:1.12rem}.ojm30 .hero figure{margin:34px 0 40px}.ojm30 .hero img,.ojm30 .content figure img{width:100%;border-radius:20px}.ojm30 .content{font-size:1.04rem;color:#3f4a46}.ojm30 .content h2,.ojm30 .content h3{font-family:var(--serif);color:var(--ink);line-height:1.12}.ojm30 .content h2{margin:72px 0 18px;font-size:clamp(2rem,3vw,2.65rem)}.ojm30 .content h3{margin:32px 0 10px;font-size:1.5rem}.ojm30 .content p{margin:0 0 18px}.ojm30 .content ul,.ojm30 .content ol{padding-left:24px}.ojm30 .content li+li{margin-top:7px}.ojm30 figure{margin:32px 0}.ojm30 figcaption{margin-top:10px;color:#6a716e;font-size:.87rem}.ojm30 .table-wrap,.ojm30 .mirror-size-table-wrap{overflow:auto;margin:24px 0;border:1px solid var(--line);border-radius:14px;background:#fff}.ojm30 table{width:100%;min-width:650px;border-collapse:collapse}.ojm30 th,.ojm30 td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}.ojm30 th{background:var(--deep);color:#fff;font-size:.85rem}.ojm30 tr:last-child td{border-bottom:0}.ojm30 .mirror-size-decision-box{margin:8px 0 42px;padding:28px;border:1px solid rgba(15,93,88,.2);border-radius:22px;background:linear-gradient(145deg,#fff,#edf5f1);box-shadow:0 20px 50px rgba(29,60,53,.1)}.ojm30 .mirror-size-decision-box h2{margin:0 0 4px;font-size:clamp(1.8rem,3vw,2.45rem)}.ojm30 .mirror-size-decision-box p:last-child{margin:16px 0 0;padding:14px 16px;border-left:4px solid var(--accent);background:#fff;border-radius:0 10px 10px 0}.ojm30 .mirror-size-decision-box table{min-width:620px}.ojm30 .mirror-size-decision-box tbody tr:nth-child(2){background:#e3f2ec}.ojm30 .mirror-size-decision-box tbody tr:nth-child(2) td:nth-child(2){color:var(--brand);font-size:1.1rem}.ojm30 details.article-toc{margin:35px 0 48px;border:1px solid var(--line);border-radius:16px;background:#fff}.ojm30 details.article-toc summary{padding:20px 24px;cursor:pointer;font-family:var(--serif);font-size:1.45rem;font-weight:750}.ojm30 .article-toc ol{margin:0;padding:0 48px 24px}.ojm30 .article-toc a{text-decoration:none}.ojm30 blockquote{margin:26px 0;padding:18px 20px;border-left:4px solid var(--accent);background:#fff;border-radius:0 12px 12px 0}.ojm30 .faq-item{border-top:1px solid var(--line)}.ojm30 .faq-item:last-of-type{border-bottom:1px solid var(--line)}.ojm30 .faq-item summary{display:flex;justify-content:space-between;gap:18px;padding:21px 2px;cursor:pointer;font-weight:760;list-style:none}.ojm30 .faq-item summary span{color:var(--accent);font-size:1.4rem}.ojm30 .faq-item[open] summary span{transform:rotate(45deg)}.ojm30 .faq-item>div{padding:0 36px 18px 2px}.ojm30 .content h2:last-of-type{}.ojm30 aside{position:sticky;top:110px;padding:27px;border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 22px 54px rgba(34,28,20,.12)}.ojm30 aside h2{margin:8px 0 0;font-family:var(--serif);font-size:1.9rem;line-height:1.08}.ojm30 aside p{font-size:.93rem;color:#4d5854}.ojm30 form{display:grid;gap:12px;margin-top:20px}.ojm30 label{display:grid;gap:5px;font-size:.76rem;font-weight:760}.ojm30 input,.ojm30 textarea{width:100%;padding:11px 12px;border:1px solid var(--line);border-radius:9px;font:inherit}.ojm30 button{min-height:48px;border:0;border-radius:999px;background:var(--brand);color:#fff;font-weight:850}.ojm30 small{color:#727b77;font-size:.72rem}.ojm30 footer{padding:52px 0;background:#12201f;color:#dfe8e5}.ojm30 .footer-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:34px}.ojm30 .footer-grid a{display:block;margin:7px 0;color:#b9c7c3;text-decoration:none;font-size:.85rem}.ojm30 .light{color:#fff}
@media(max-width:860px){.ojm30 .header-inner{grid-template-columns:1fr auto;min-height:70px}.ojm30 nav{display:none}.ojm30 .layout{grid-template-columns:1fr}.ojm30 .shell{width:min(100% - 34px,760px)}.ojm30 .hero h1{font-size:clamp(2.55rem,11vw,3.5rem)}.ojm30 aside{position:static}.ojm30 .content h2{margin-top:54px}.ojm30 .footer-grid{grid-template-columns:1fr 1fr}.ojm30 .mirror-size-decision-box{padding:22px}.ojm30 .mirror-size-table-wrap{margin-inline:-8px}}
@media(max-width:520px){.ojm30 .header-cta{padding:10px 13px;font-size:.8rem}.ojm30 .hero h1{font-size:2.4rem}.ojm30 .lead{font-size:1rem}.ojm30 .mirror-size-decision-box{padding:18px;border-radius:17px}.ojm30 .mirror-size-decision-box h2{font-size:1.75rem}.ojm30 .footer-grid{grid-template-columns:1fr}.ojm30 .content figure{margin-inline:-8px}.ojm30 .content figure img{border-radius:12px}}.ojm30 .project-box{margin:48px 0;padding:26px;border:1px solid #c8dcd4;border-left:5px solid var(--brand);border-radius:16px;background:#edf5f1}.ojm30 .content .project-box h2{margin:0 0 18px}.ojm30 .cta-panel{margin:40px 0;padding:28px;background:var(--deep);color:#fff;border-radius:18px}.ojm30 .content .cta-panel h2{margin:0 0 18px;color:#fff}.ojm30 .cta-panel a{color:#f5d49f}.ojm30 .cta-panel p:has(>strong>a){padding:12px 18px;background:#fff;border-radius:10px;width:fit-content}.ojm30 .cta-panel p>strong>a{color:var(--deep);text-decoration:none}.ojm30 .hero .mirror-size-decision-box{margin-top:24px}.ojm30 section[id],.ojm30 a[id],.ojm30 aside[id]{scroll-margin-top:100px}.ojm30 .mirror-size-decision-box,.ojm30 .mirror-size-table-wrap,.ojm30 .table-wrap{min-width:0;max-width:100%}.ojm30 .mirror-size-table-wrap,.ojm30 .table-wrap{width:100%;overscroll-behavior-inline:contain}.ojm30 .content,.ojm30 .hero{min-width:0;overflow-x:clip}
@media(max-width:520px){.ojm30 .mirror-size-table-wrap{overflow:visible;border:0;background:transparent}.ojm30 .mirror-size-decision-box .mirror-size-table{display:block;min-width:0}.ojm30 .mirror-size-table thead{display:none}.ojm30 .mirror-size-table tbody{display:grid;gap:10px}.ojm30 .mirror-size-table tr{display:grid;grid-template-columns:1fr auto;gap:5px 14px;padding:14px;border:1px solid var(--line);border-radius:12px;background:#fff}.ojm30 .mirror-size-table td{display:block;padding:0;border:0}.ojm30 .mirror-size-table td:first-child{font-weight:700}.ojm30 .mirror-size-table td:nth-child(2){grid-column:2;grid-row:1;color:var(--brand);font-size:1.05rem}.ojm30 .mirror-size-table td:nth-child(3){grid-column:1/-1;color:var(--muted);font-size:.86rem}.ojm30 .mirror-size-decision-box tbody tr:nth-child(2){background:#e3f2ec}.ojm30 .table-wrap{overflow-x:auto}.ojm30 .table-wrap table{min-width:620px}
}.ojm30 .inset-calculator{padding:24px;margin:28px 0;border:1px solid #b7cfc6;border-radius:16px;background:#edf5f1;display:grid;gap:14px}.ojm30 .content .inset-calculator h3{margin:0}.ojm30 .inset-calculator label{font-size:1rem}.ojm30 .inset-calculator input{font-size:1rem;background:#fff}.ojm30 .inset-calculator output{display:block;padding:16px;background:white;border-left:4px solid var(--brand);font-weight:700}.ojm30 .inset-calculator .calculator-note{font-size:.9rem;margin:0}.ojm30 .inset-calculator button{cursor:pointer;font-size:1rem}.ojm30 .inset-calculator :focus-visible{outline:3px solid #b57934;outline-offset:3px}

/* Match the published FAQ card spacing. */
.ojm30 .faq-item summary{align-items:center;gap:24px;padding-inline:32px}
.ojm30 .faq-item summary span{flex:0 0 auto}
.ojm30 .faq-item>div{padding-inline:32px}
@media(max-width:520px){.ojm30 .faq-item summary{gap:16px;padding-inline:20px}.ojm30 .faq-item>div{padding-inline:20px}}

.ojm30 figure img{width:100%;height:auto}.ojm30 .content [id]{scroll-margin-top:140px}.ojm30 .inset-calculator label{display:grid;gap:6px}.ojm30 .inset-calculator button{padding:12px 20px}body.ojm30-guide .hero-lead{font-size:18px!important;line-height:1.65!important;font-weight:400!important}body.ojm30-guide .article-rfq{max-height:calc(100dvh - 132px);overflow-y:auto}@media(min-width:981px){body.ojm30-guide .article-rfq{position:sticky;top:116px}}@media(max-width:980px){body.ojm30-guide .article-rfq{max-height:none;overflow:visible}}
.ojm30 .author-line{font:500 15px/1.7 Arial,sans-serif;color:#45605b;margin:12px 0 24px}
.ojm30 .table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.ojm30 figure img{height:auto;max-width:100%}
.ojm30 figcaption{font-size:14px;line-height:1.6;color:#52615c}
.ojm30 .cta-panel p,.ojm30 .cta-panel strong{color:#fff!important}
.ojm30 .cta-panel a{color:#ffdc99}
.ojm30 #use-inset-inquiry{background:#fff;color:#123e38;border:1px solid #123e38;margin-top:8px}
@media(max-width:680px){.ojm30 table{font-size:15px}.ojm30 .table-wrap table{min-width:560px}.ojm30 .author-line{font-size:14px}}