:root{--navy:#11364b;--ink:#243844;--muted:#667783;--line:#dbe3e1;--gold:#e9b52b;--paper:#f5f7f4}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:#fff;color:var(--ink);font-family:Arial,Helvetica,sans-serif}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit}.review-note{padding:9px 5%;background:#fff5d9;color:#765521;font-size:13px;line-height:1.5}.site-header{height:96px;display:flex;align-items:center;justify-content:space-between;padding:12px max(5%,calc((100vw - 1480px)/2));border-bottom:1px solid var(--line)}.brand img{width:190px;max-height:74px;object-fit:contain}.site-header nav{display:flex;align-items:center;gap:34px;font-size:12px;letter-spacing:.08em;font-weight:700;color:var(--navy)}.site-header nav a:hover{color:#a47c24}main{max-width:1480px;margin:auto;padding:0 5% 90px}.crumb{display:flex;gap:12px;align-items:center;margin:28px 0 40px;color:#7b898f;font-size:13px}.crumb strong{color:var(--navy)}.intro{display:flex;align-items:end;justify-content:space-between;gap:20px;margin-bottom:32px}.eyebrow{font-size:12px;color:#a2761f;letter-spacing:.16em;font-weight:700;margin:0 0 14px}.intro h1{font-size:clamp(38px,4vw,60px);line-height:1.05;letter-spacing:-.04em;color:var(--navy);margin:0 0 14px}.intro p:not(.eyebrow){color:var(--muted);font-size:16px;line-height:1.65;max-width:700px;margin:0}.preview-tag{color:#8b9b99;border:1px solid var(--line);padding:10px 13px;font-size:11px;letter-spacing:.1em;white-space:nowrap}.config-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(530px,.96fr);gap:38px;align-items:start}.gallery{min-width:0}.hero-photo{position:relative;overflow:hidden;background:#d9e5e9;aspect-ratio:1.08}.hero-photo img{width:100%;height:100%;object-fit:cover}.hero-photo span{position:absolute;bottom:18px;left:18px;background:#ffffffec;color:var(--navy);font-size:12px;font-weight:700;padding:10px 13px}.selected-visual{margin-top:16px;min-height:175px;padding:27px 30px;display:flex;align-items:center;gap:24px;background:#edf1ee;border:1px solid var(--line)}.drawing-mark{font-size:70px;line-height:1;color:#9eaeac}.selected-visual span,.enquiry-card>span,.card-top span{color:#9a741d;letter-spacing:.14em;font-size:11px;font-weight:700}.selected-visual h2{font-size:26px;color:var(--navy);margin:8px 0}.selected-visual p,.image-caution,.cta-note,.detail-note{font-size:13px;line-height:1.6;color:#71817f;margin:0}.image-caution{margin:13px 0}.config-panel{border:1px solid var(--line);padding:32px 36px 28px}.config-panel h2{font-size:27px;color:var(--navy);margin:0 0 24px}.field-group{border-top:1px solid #e6ebe8;padding:21px 0 19px}.field-group:first-of-type{border-top:0;padding-top:0}.field-group h3{font-size:16px;color:var(--navy);margin:0 0 14px}.field-group h3 span{font-size:12px;letter-spacing:.1em;color:#a57c1e;margin-right:8px}.field-group h3 small{font-size:11px;font-weight:400;color:#899994;margin-left:7px}.option-grid{display:grid;gap:9px}.option-grid.variants{grid-template-columns:repeat(3,minmax(0,1fr))}.option-grid.compact{grid-template-columns:repeat(4,minmax(0,1fr))}.option-grid button{min-height:59px;border:1px solid #cbd8d4;background:#fff;color:var(--navy);font-size:13px;line-height:1.35;cursor:pointer;padding:10px}.option-grid button:hover,.option-grid button:focus-visible{border-color:#b58c24}.option-grid button.active{background:#fff8e3;border-color:#c59016;box-shadow:inset 0 0 0 1px #c59016}.check-grid{display:flex;flex-wrap:wrap;gap:12px 19px}.check-grid label{display:flex;gap:8px;align-items:center;font-size:13px;color:var(--navy)}.check-grid input{accent-color:#c59016}.primary{display:flex;justify-content:center;align-items:center;gap:12px;width:100%;min-height:59px;background:var(--gold);color:var(--navy);border:0;font-weight:700;cursor:pointer;font-size:15px}.primary span{margin-left:auto;margin-right:14px}.primary:hover{background:#f3c84a}.primary:disabled{background:#e4e8e6;color:#7d8986;cursor:not-allowed}.config-panel .cta-note{text-align:center;margin-top:12px}.hidden{display:none}.detail-entry{margin-top:80px;border-top:1px solid var(--line);padding-top:46px}.detail-entry h2{font-size:35px;color:var(--navy);margin:0 0 24px}.detail-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.detail-cards a{min-height:190px;padding:24px;border:1px solid var(--line);background:#fff;display:flex;flex-direction:column}.detail-cards a:hover{border-color:#be9238}.detail-cards span{color:#aa8128;font-size:12px}.detail-cards h3{font-size:23px;color:var(--navy);margin:20px 0 5px}.detail-cards p{color:var(--muted);font-size:13px;margin:0}.detail-cards b{margin-top:auto;padding-top:18px;color:#9b731e;font-size:12px}.detail-note{margin-top:16px}.enquiry-main{max-width:1240px}.enquiry-layout{display:grid;grid-template-columns:1fr 1.1fr;gap:22px}.enquiry-card{border:1px solid var(--line);padding:30px}.enquiry-card h2{margin:8px 0 24px;color:var(--navy);font-size:25px}.card-top{display:flex;justify-content:space-between;align-items:start;gap:12px}.card-top a{font-size:13px;color:#9b731e;text-decoration:underline}.summary-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;margin-bottom:20px}.summary-row{border-top:1px solid #e5ebe8;padding:13px 0}.summary-row small{display:block;color:#82918f;font-size:11px;margin-bottom:6px}.summary-row strong{font-size:14px;color:var(--navy);font-weight:600}.quantity,.form-grid label{display:block;font-size:13px;color:var(--navy);font-weight:700}.quantity input,.form-grid input,.form-grid textarea{width:100%;margin-top:8px;padding:13px;border:1px solid #cbd8d4;border-radius:0;color:var(--navy);font-size:14px;background:#fff}.review-line{padding:12px 14px;background:#f3f7f2;color:#50685c;font-size:12px;margin:18px 0 0}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px 15px;margin-bottom:22px}.form-grid .full{grid-column:1/-1}.enquiry-card .cta-note{text-align:center;margin-top:12px}@media(max-width:1050px){.config-layout{grid-template-columns:1fr}.gallery{display:grid;grid-template-columns:1.2fr .8fr;gap:12px}.hero-photo{aspect-ratio:1.5}.selected-visual{margin:0}.image-caution{grid-column:1/-1}.site-header nav{gap:17px}}@media(max-width:720px){.site-header{height:auto;min-height:78px}.brand img{width:145px}.site-header nav{display:none}.intro{display:block}.preview-tag{display:inline-block;margin-top:18px}.gallery{display:block}.hero-photo{aspect-ratio:1.2}.selected-visual{margin-top:12px}.config-panel{padding:25px 18px}.option-grid.variants{grid-template-columns:repeat(2,1fr)}.option-grid.compact{grid-template-columns:repeat(2,1fr)}.detail-cards,.enquiry-layout{grid-template-columns:1fr}.form-grid{grid-template-columns:1fr}}
.detail-shell{margin-top:55px}.template-section{padding:42px 0;border-top:1px solid var(--line);scroll-margin-top:30px}.template-heading{display:flex;align-items:baseline;gap:15px;margin-bottom:21px}.template-heading>span{font-size:12px;color:#a47c24;font-weight:700}.template-heading h2{font-size:26px;color:var(--navy);margin:0}.template-heading h2 small{font-size:14px;color:#8b9896;font-weight:400;margin-left:8px}.template-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.template-grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.empty-image{min-height:170px;display:flex;align-items:center;justify-content:center;background:#f2f5f3;border:1px dashed #becdc6;color:#8d9c96;text-align:center;font-size:13px;padding:20px}.template-card{scroll-margin-top:30px}.template-card h3{font-size:19px;color:var(--navy);margin:16px 0 7px}.template-card p,.template-section>p{font-size:13px;line-height:1.7;color:#788781}.spec-skeleton{border-top:1px solid var(--line)}.spec-skeleton>div{display:grid;grid-template-columns:1fr 2fr;padding:14px 8px;border-bottom:1px solid var(--line);font-size:13px}.spec-skeleton b{color:var(--navy)}.spec-skeleton span{color:#82918f}@media(max-width:720px){.template-grid,.template-grid.two{grid-template-columns:1fr}.template-heading h2{font-size:21px}.template-heading h2 small{display:block;margin:5px 0 0}.spec-skeleton>div{grid-template-columns:1fr;gap:6px}}
.option-grid.variants,#beam-profile{grid-template-columns:repeat(2,minmax(0,1fr))}.detail-cards a{overflow:hidden}.catalog-image{min-height:165px;margin:-24px -24px 22px;background:#eef2ef;border-bottom:1px dashed #b9c9c2;display:flex;align-items:center;justify-content:center;padding:20px;text-align:center;color:#899b94;font-size:13px;font-weight:400}.detail-cards a:hover .catalog-image{background:#f5f7f1}
/* Refined selector cards for the layout review. */
.config-panel{border:1px solid #e4eae5;border-radius:22px;background:linear-gradient(160deg,#ffffff 0%,#fbfcfa 100%);box-shadow:0 20px 55px #173a4d12;padding:35px 38px 31px}.config-panel h2{font-size:29px;letter-spacing:-.025em}.field-group{border-top:1px solid #e9eeeb;padding:24px 0}.field-group h3{display:flex;align-items:center;gap:8px;font-size:15px}.field-group h3 span{display:inline-flex;align-items:center;justify-content:center;width:27px;height:27px;flex:none;border-radius:50%;background:#f8eac8;color:#8f6814;margin:0;font-weight:800;font-size:11px}.field-group h3 small{margin-left:auto}.option-grid button{transition:transform .16s ease,box-shadow .16s ease,border-color .16s ease,background .16s ease}.option-grid button:hover{transform:translateY(-2px);box-shadow:0 10px 23px #173a4d16}.option-grid button.active{background:#fffaf0;border-color:#c4972a;box-shadow:0 8px 19px #b68d2b22,inset 0 0 0 1px #c4972a}.option-grid.variants button{position:relative;text-align:left;min-height:94px;padding:15px 32px 15px 63px;border-radius:15px;background:#fff;font-weight:700;box-shadow:0 3px 14px #173a4d0b}.option-grid.variants button.active{background:linear-gradient(135deg,#fffaf0,#fff);box-shadow:0 8px 20px #b68d2b22,inset 0 0 0 1px #c4972a}.option-grid.variants button::before{content:"";position:absolute;left:16px;top:50%;width:34px;height:34px;transform:translateY(-50%);border-radius:11px;background:linear-gradient(125deg,#78888b,#e7eceb 45%,#86999a 80%);box-shadow:inset 0 0 0 1px #ffffff80,0 3px 8px #173a4d1a}.option-grid.variants button[data-id="powder-coated"]::before{background:linear-gradient(130deg,#2e604f,#8aad87 45%,#244e4e)}.option-grid.variants button[data-id="galvanized-coated"]::before{background:linear-gradient(135deg,#85979a 0 49%,#4d805f 51% 100%)}.option-grid.variants button[data-id="oem"]::before{content:"✎";display:flex;align-items:center;justify-content:center;background:#e4eff2;color:#2c6576;font-size:23px;box-shadow:none}.option-grid.variants button.active::after,#beam-profile button.active::after{content:"✓";position:absolute;right:9px;top:8px;width:18px;height:18px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:#bd8b1e;color:white;font-size:12px;font-weight:800}.option-grid.variants button:focus-visible,#beam-profile button:focus-visible,#thickness button:focus-visible,#grade button:focus-visible{outline:3px solid #d5a644;outline-offset:2px}#beam-profile button{position:relative;min-height:78px;padding:13px 26px 13px 72px;text-align:left;border-radius:13px;font-weight:700;background:#fff}#beam-profile button.active{background:#fffaf0}#thickness button,#grade button{min-height:58px;border-radius:11px;background:#fff;font-weight:700}#thickness button.active,#grade button.active{background:#fff8e9}.check-grid{gap:10px}.check-grid label{background:#fff;border:1px solid #d7e1dc;border-radius:999px;padding:10px 14px;cursor:pointer}.check-grid label:has(input:checked){background:#fff7e5;border-color:#c4972a}.primary{border-radius:12px;box-shadow:0 10px 20px #d8aa3833}.primary:hover{transform:translateY(-1px);box-shadow:0 13px 24px #d8aa384d}.selected-visual{border-radius:15px;background:linear-gradient(120deg,#eaf1ed,#f8f9f4);border-color:#e2e9e2}.hero-photo{border-radius:16px}.detail-cards a{border-radius:15px;box-shadow:0 6px 20px #173a4d0a;transition:transform .16s ease,box-shadow .16s ease}.detail-cards a:hover{transform:translateY(-4px);box-shadow:0 14px 28px #173a4d17}.catalog-image{background:repeating-linear-gradient(135deg,#eef3ef 0,#eef3ef 16px,#e8efea 16px,#e8efea 17px);font-weight:600}@media(max-width:720px){.config-panel{padding:25px 18px;border-radius:16px}.option-grid.variants button{min-height:82px;padding:12px 25px 12px 55px;font-size:12px}.option-grid.variants button::before{left:12px;width:30px;height:30px}.field-group h3 small{font-size:10px}}

/* Beam icons show the connected two- or three-corrugation panel, not a text glyph. */
#beam-profile button img{position:absolute;left:12px;top:50%;transform:translateY(-50%);width:50px;height:48px;object-fit:contain}

/* Dedicated product-page review: a drawing placeholder is never presented as a product photo. */
.profile-visual{aspect-ratio:1.08;display:flex;align-items:center;justify-content:center;position:relative;border-radius:16px;background:linear-gradient(145deg,#e7eeed,#f8faf8);border:1px solid var(--line)}
.profile-visual img{width:min(40%,230px);height:65%;object-fit:contain}
.profile-visual span{position:absolute;bottom:18px;left:18px;padding:10px 13px;background:#fff;color:var(--navy);font-size:12px;font-weight:700}
.drawing-mark .beam-mark{width:52px;height:60px;object-fit:contain}
.product-detail-copy{max-width:880px;color:#627680;font-size:16px;line-height:1.7}
.product-related-links{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.product-related-links a{display:flex;align-items:center;min-height:75px;padding:20px;border:1px solid var(--line);border-radius:12px;color:var(--navy);font-weight:700;font-size:14px}
.product-related-links a:hover{border-color:#bd8b1e;background:#fffaf0}
@media(max-width:720px){.profile-visual{aspect-ratio:1.2}.product-related-links{grid-template-columns:1fr}}
.source-note{font-size:12px;color:#84938f;line-height:1.6}
.technical-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.technical-figure{margin:0;border:1px solid var(--line);border-radius:14px;overflow:hidden;background:#fff}
.technical-figure img{display:block;width:100%;height:280px;object-fit:contain;padding:18px;background:#f8faf9}
.technical-figure figcaption{padding:19px 21px;display:grid;gap:8px}
.technical-figure figcaption strong{color:var(--navy);font-size:16px}
.technical-figure figcaption span{color:#6b7f84;font-size:13px;line-height:1.55}
@media(max-width:800px){.technical-pair{grid-template-columns:1fr}.technical-figure img{height:240px}}
.finish-hero{position:relative;aspect-ratio:1.08;display:flex;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:16px;background:linear-gradient(145deg,#e8eeee,#f7f9f6)}
.finish-icons{display:flex;align-items:center;justify-content:center;gap:10%;width:80%;height:65%}
.finish-icons img{width:30%;height:75%;object-fit:contain}
.finish-hero>span{position:absolute;left:18px;bottom:18px;background:#fff;padding:10px 13px;font-size:12px;color:var(--navy);font-weight:700}
.field-hint{font-size:11px;line-height:1.5;color:#7b8b88;margin:10px 0 0}
.option-grid button:disabled{opacity:.35;cursor:not-allowed;background:#f4f5f3;box-shadow:none;transform:none}
@media(max-width:720px){.finish-hero{aspect-ratio:1.2}}

/* Keep long translated product names and enquiry labels inside narrow screens. */
@media(max-width:720px){
  .crumb{flex-wrap:wrap;overflow-wrap:anywhere}
  .crumb strong{min-width:0}
  .selected-visual{padding:20px;gap:14px}
  .selected-visual>div:last-child{min-width:0;overflow-wrap:anywhere}
  .enquiry-layout{grid-template-columns:minmax(0,1fr)}
  .enquiry-card{min-width:0;overflow-wrap:anywhere}
  .card-top{flex-wrap:wrap}
}