:root {
  --brand: #9b111e;
  --brand-dark: #6d0a14;
  --brand-light: #c22436;
  --dark: #101820;
  --gray: #5b6672;
  --light: #f5f7fa;
  --line: #e3e8ee;
  --radius: 10px;
  --shadow: 0 10px 30px rgba(16, 24, 32, .10);
  --font: "Segoe UI", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--dark); line-height: 1.65; background: #fff; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: min(1180px, 92%); margin: 0 auto; }

/* ---------- Top bar ---------- */
.topbar { background: var(--dark); color: #cfd6dd; font-size: 13px; }
.topbar .container { display: flex; justify-content: space-between; align-items: center; height: 38px; gap: 16px; }
.topbar a { color: #fff; }
.topbar .tb-links { display: flex; gap: 18px; align-items: center; }
@media (max-width: 760px) { .topbar .tb-links span.hide-sm { display: none; } }

/* ---------- Header ---------- */
.header { position: sticky; top: 0; z-index: 900; background: #fff; box-shadow: 0 2px 14px rgba(16,24,32,.08); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 76px; gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; }
.logo svg { display: block; }
.logo .logo-sub { font-size: 11px; letter-spacing: .14em; color: var(--gray); text-transform: uppercase; }

.nav { display: flex; align-items: center; gap: 4px; }
.nav > li { position: relative; }
.nav > li > a { display: flex; align-items: center; gap: 5px; padding: 10px 16px; font-weight: 600; font-size: 15px; border-radius: 6px; transition: color .2s; }
.nav > li > a:hover, .nav > li.active > a { color: var(--brand); }
.nav .caret { font-size: 10px; opacity: .6; transform: translateY(1px); }
.dropdown {
  position: absolute; top: 100%; left: 0; min-width: 268px; background: #fff;
  border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 8px; opacity: 0; visibility: hidden; transform: translateY(8px); transition: all .22s;
}
.nav > li:hover .dropdown { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown a { display: block; padding: 10px 14px; border-radius: 8px; font-size: 14.5px; }
.dropdown a:hover { background: var(--light); color: var(--brand); }
.dropdown .dd-head { padding: 10px 14px 6px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; color: var(--gray); }

.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 26px; border-radius: 999px; font-weight: 700; font-size: 15px; cursor: pointer; border: none; transition: all .2s; }
.btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover { background: var(--brand-dark); }
.btn-outline { border: 2px solid #fff; color: #fff; background: transparent; }
.btn-outline:hover { background: #fff; color: var(--brand); }
.btn-dark { background: var(--dark); color: #fff; }
.btn-dark:hover { background: var(--brand); }
.header .btn { padding: 10px 20px; font-size: 14px; }

.nav-toggle { display: none; background: none; border: none; font-size: 26px; cursor: pointer; color: var(--dark); }
@media (max-width: 1020px) {
  .nav-toggle { display: block; }
  .header .btn { display: none; }
  .nav {
    position: absolute; top: 100%; left: 0; right: 0; background: #fff; flex-direction: column;
    align-items: stretch; padding: 10px 4%; border-top: 1px solid var(--line); display: none;
    box-shadow: 0 20px 30px rgba(16,24,32,.12);
  }
  .nav.open { display: flex; }
  .nav > li > a { padding: 14px 10px; border-bottom: 1px solid var(--line); }
  .dropdown { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: none; display: none; padding-left: 18px; }
  .nav > li:hover .dropdown { display: block; }
  .nav > li.has-sub.open .dropdown { display: block; }
}

/* ---------- Hero slider ---------- */
.hero { position: relative; height: 78vh; min-height: 480px; max-height: 720px; overflow: hidden; background: var(--dark); }
.hero .slide { position: absolute; inset: 0; opacity: 0; transition: opacity .9s ease; background-size: cover; background-position: center; }
.hero .slide.on { opacity: 1; }
.hero .slide::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(8,14,22,.72) 8%, rgba(8,14,22,.25) 55%, rgba(8,14,22,.05)); }
.hero .slide-content { position: absolute; z-index: 2; left: 0; right: 0; top: 50%; transform: translateY(-50%); color: #fff; opacity: 0; transition: opacity .9s ease; pointer-events: none; }
.hero .slide-content.on { opacity: 1; pointer-events: auto; }
.hero .slide-content.lower { top: 72%; transform: none; }
.hero .kicker { display: inline-block; background: var(--brand); padding: 5px 14px; border-radius: 999px; font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 18px; }
.hero h1 { font-size: clamp(30px, 4.6vw, 54px); line-height: 1.15; max-width: 760px; text-shadow: 0 3px 18px rgba(0,0,0,.45); }
.hero p { margin: 16px 0 28px; font-size: clamp(15px, 1.5vw, 18px); max-width: 620px; color: #e8edf3; }
.hero .dots { position: absolute; z-index: 3; bottom: 26px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; }
.hero .dots button { width: 34px; height: 5px; border: none; border-radius: 3px; background: rgba(255,255,255,.4); cursor: pointer; transition: background .3s; }
.hero .dots button.on { background: var(--brand); }
.hero .arrow { position: absolute; z-index: 3; top: 50%; transform: translateY(-50%); width: 46px; height: 46px; border-radius: 50%; border: none; cursor: pointer; background: rgba(255,255,255,.16); color: #fff; font-size: 20px; transition: background .2s; }
.hero .arrow:hover { background: var(--brand); }
.hero .arrow.prev { left: 22px; }
.hero .arrow.next { right: 22px; }

/* ---------- Quick cards under hero ---------- */
.quick { margin-top: -58px; position: relative; z-index: 5; }
.quick .grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
@media (max-width: 1280px) { .quick .grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 1100px) { .quick .grid { grid-template-columns: repeat(2, 1fr); } }
.qcard { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); padding: 30px 28px; border-top: 4px solid var(--brand); transition: transform .25s; overflow: hidden; }
.qcard:hover { transform: translateY(-6px); }
.qcard .qimg { margin: -30px -28px 18px; width: calc(100% + 56px); background: #fff; }
.qcard .qimg img { display: block; width: 100%; height: 210px; object-fit: contain; }
.qcard .icon { width: 52px; height: 52px; border-radius: 12px; background: var(--light); display: flex; align-items: center; justify-content: center; margin-bottom: 16px; font-size: 24px; }
.qcard h3 { font-size: 19px; margin-bottom: 8px; }
.qcard p { color: var(--gray); font-size: 14.5px; margin-bottom: 14px; }
.qcard a { color: var(--brand); font-weight: 700; font-size: 14px; }
@media (max-width: 860px) { .quick .grid { grid-template-columns: 1fr; } }

/* ---------- Section scaffolding ---------- */
section.block { padding: 84px 0; }
section.block.alt { background: var(--light); }
.sec-head { max-width: 720px; margin: 0 auto 48px; text-align: center; }
.sec-head .eyebrow { color: var(--brand); font-weight: 800; letter-spacing: .12em; text-transform: uppercase; font-size: 13px; }
.sec-head h2 { font-size: clamp(26px, 3vw, 38px); margin: 8px 0 14px; line-height: 1.2; }
.sec-head p { color: var(--gray); }

/* ---------- About split ---------- */
.split { display: grid; grid-template-columns: 1.05fr 1fr; gap: 54px; align-items: center; }
.split .img-wrap { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); position: relative; }
.split .img-wrap .badge { position: absolute; left: 18px; bottom: 18px; background: var(--brand); color: #fff; border-radius: var(--radius); padding: 12px 20px; font-weight: 800; font-size: 14px; letter-spacing: .04em; }
.check-list { margin: 22px 0 30px; display: grid; gap: 12px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; }
.check-list .tick { flex: 0 0 24px; width: 24px; height: 24px; border-radius: 50%; background: var(--brand); color: #fff; font-size: 13px; display: flex; align-items: center; justify-content: center; margin-top: 3px; }
.check-list b { display: block; }
.check-list span.d { color: var(--gray); font-size: 14.5px; }
@media (max-width: 900px) { .split { grid-template-columns: 1fr; } }

/* ---------- Product cards ---------- */
.pgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
@media (max-width: 980px) { .pgrid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .pgrid { grid-template-columns: 1fr; } }
.pcard { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: all .25s; display: flex; flex-direction: column; }
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.pcard .thumb { background: #fff; border-bottom: 1px solid var(--line); display: flex; align-items: center; justify-content: center; padding: 22px; }
.pcard .thumb img { height: 160px; width: auto; max-width: 100%; object-fit: contain; }
.pcard .body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.pcard h3 { font-size: 18px; margin-bottom: 8px; }
.pcard p { color: var(--gray); font-size: 14.5px; flex: 1; }
.pcard .more { color: var(--brand); font-weight: 700; font-size: 14px; margin-top: 16px; }

/* ---------- Stats ---------- */
.stats { background: linear-gradient(rgba(10,15,22,.82), rgba(10,15,22,.82)), url("../images/calibration.jpg") center/cover fixed; color: #fff; }
.stats .grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 26px; text-align: center; }
.stat .num { font-size: clamp(34px, 4vw, 52px); font-weight: 800; color: #fff; }
.stat .num em { color: var(--brand-light); font-style: normal; }
.stat .lbl { color: #c9d2da; font-size: 15px; margin-top: 6px; }
@media (max-width: 760px) { .stats .grid { grid-template-columns: repeat(2, 1fr); } }

/* ---------- Industry cards ---------- */
.igrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
@media (max-width: 980px) { .igrid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .igrid { grid-template-columns: 1fr; } }
.icard { position: relative; border-radius: var(--radius); overflow: hidden; min-height: 210px; display: flex; align-items: flex-end; box-shadow: var(--shadow); }
.icard .bg { position: absolute; inset: 0; background-size: cover; background-position: center; transition: transform .5s; }
.icard:hover .bg { transform: scale(1.06); }
.icard .bg::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(10,15,22,.05) 30%, rgba(10,15,22,.85)); }
.icard .txt { position: relative; z-index: 2; padding: 22px; color: #fff; }
.icard .txt h3 { font-size: 18px; }
.icard .txt p { font-size: 13.5px; color: #d7dee5; margin-top: 4px; }

/* ---------- News ---------- */
.ngrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
@media (max-width: 980px) { .ngrid { grid-template-columns: 1fr; } }
.ncard { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: #fff; transition: all .25s; display: flex; flex-direction: column; }
.ncard:hover { box-shadow: var(--shadow); transform: translateY(-5px); }
.ncard .cover { height: 190px; display: flex; align-items: center; justify-content: center; background: #fff; border-bottom: 1px solid var(--line); }
.ncard .cover img { max-height: 150px; width: auto; max-width: 80%; object-fit: contain; }
.ncard .body { padding: 22px; display: flex; flex-direction: column; flex: 1; }
.ncard .tag { color: var(--brand); font-weight: 700; font-size: 12.5px; letter-spacing: .06em; text-transform: uppercase; }
.ncard h3 { font-size: 17px; margin: 8px 0 10px; line-height: 1.4; }
.ncard p { color: var(--gray); font-size: 14px; flex: 1; }
.ncard .meta { margin-top: 14px; font-size: 13px; color: #98a2ac; }

/* ---------- CTA band ---------- */
.cta { background: var(--dark); color: #fff; padding: 70px 0; }
.cta .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta h2 { font-size: clamp(24px, 3vw, 34px); }
.cta p { color: #b9c3cc; margin-top: 8px; max-width: 560px; }

/* ---------- Footer ---------- */
.footer { background: #0b1118; color: #aeb8c2; font-size: 14.5px; }
.footer .cols { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; padding: 64px 0 46px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 18px; }
.footer ul { display: grid; gap: 10px; }
.footer a:hover { color: #fff; }
.footer .fline { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 12px; }
.footer .fline .ic { color: var(--brand-light); flex: 0 0 18px; margin-top: 3px; }
.footer .bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 18px 0; display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; font-size: 13px; color: #7d8792; }
@media (max-width: 900px) { .footer .cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .footer .cols { grid-template-columns: 1fr; } }

/* ---------- Page banner ---------- */
.page-banner { position: relative; background: linear-gradient(rgba(9,14,20,.72), rgba(9,14,20,.72)), url("../images/refinery.jpg") center/cover; color: #fff; padding: 92px 0 76px; }
.page-banner h1 { font-size: clamp(30px, 4vw, 46px); }
.page-banner .crumbs { margin-top: 12px; font-size: 14px; color: #d3dae1; }
.page-banner .crumbs a:hover { color: var(--brand-light); }
.page-banner .crumbs .sep { margin: 0 8px; opacity: .5; }

/* ---------- Product detail ---------- */
.detail { display: grid; grid-template-columns: 1fr 1.15fr; gap: 54px; align-items: flex-start; }
@media (max-width: 900px) { .detail { grid-template-columns: 1fr; } }
.detail .visual { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; display: flex; align-items: center; justify-content: center; position: sticky; top: 100px; box-shadow: var(--shadow); }
.detail .visual img { max-height: 420px; width: auto; max-width: 100%; object-fit: contain; }
.spec-table { width: 100%; border-collapse: collapse; margin: 20px 0 8px; font-size: 14.5px; }
.spec-table th, .spec-table td { border: 1px solid var(--line); padding: 11px 14px; text-align: left; }
.spec-table th { background: var(--light); width: 34%; font-weight: 700; }
.feature-list { display: grid; gap: 12px; margin: 18px 0 28px; }
.feature-list li { display: flex; gap: 10px; }
.feature-list .tick { flex: 0 0 22px; width: 22px; height: 22px; border-radius: 50%; background: var(--brand); color: #fff; font-size: 12px; display: flex; align-items: center; justify-content: center; margin-top: 3px; }
h3.sub { font-size: 22px; margin: 34px 0 12px; }
h3.sub::before { content: ""; display: block; width: 44px; height: 4px; background: var(--brand); border-radius: 2px; margin-bottom: 12px; }

/* ---------- Applications page ---------- */
.app-block { display: grid; grid-template-columns: 90px 1fr; gap: 24px; padding: 34px 0; border-bottom: 1px solid var(--line); }
.app-block:last-of-type { border-bottom: none; }
.app-block .ic { width: 76px; height: 76px; border-radius: 16px; background: var(--light); display: flex; align-items: center; justify-content: center; font-size: 34px; }
.app-block h2 { font-size: 22px; }
.app-block p { color: var(--gray); margin-top: 8px; max-width: 860px; }
@media (max-width: 640px) { .app-block { grid-template-columns: 1fr; } }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1.25fr; gap: 46px; align-items: flex-start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.info-card { background: var(--light); border-radius: var(--radius); padding: 32px; }
.info-card .fline { display: flex; gap: 14px; margin-bottom: 24px; }
.info-card .fline .ic { flex: 0 0 42px; width: 42px; height: 42px; border-radius: 10px; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 18px; }
.info-card .fline b { display: block; font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--gray); margin-bottom: 3px; }
.form { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 34px; box-shadow: var(--shadow); }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 560px) { .form .row { grid-template-columns: 1fr; } }
.form label { display: block; font-weight: 600; font-size: 14px; margin: 14px 0 6px; }
.form input, .form textarea, .form select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 8px;
  font-family: inherit; font-size: 14.5px; background: var(--light);
}
.form input:focus, .form textarea:focus { outline: 2px solid var(--brand-light); border-color: transparent; }
.form .btn { margin-top: 22px; width: 100%; justify-content: center; }
.map-embed { border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); margin-top: 46px; }

/* ---------- News article ---------- */
.article { max-width: 820px; margin: 0 auto; }
.article .meta { color: var(--gray); font-size: 14px; margin-bottom: 26px; }
.article p { margin-bottom: 18px; color: #2c3540; }
.article h2 { font-size: 24px; margin: 34px 0 14px; }
.article .lead { font-size: 18px; color: var(--dark); font-weight: 500; }

/* Breadcrumb bar under banner */
.crumb-strip { background: var(--light); border-bottom: 1px solid var(--line); font-size: 14px; color: var(--gray); }
.crumb-strip .container { padding: 12px 0; }

/* Utility */
.center { text-align: center; }
.mt-30 { margin-top: 30px; }

/* ================= Product detail v2 ================= */

/* quick facts strip under banner */
.facts-strip { background: #fff; border-bottom: 1px solid var(--line); }
.facts-strip .container { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; }
.facts-strip .fact { padding: 20px 22px; border-right: 1px solid var(--line); }
.facts-strip .fact:last-child { border-right: none; }
.facts-strip .k { font-size: 12px; letter-spacing: .08em; text-transform: uppercase; color: var(--gray); }
.facts-strip .v { font-size: 17px; font-weight: 800; margin-top: 4px; color: var(--dark); }
@media (max-width: 820px) {
  .facts-strip .container { grid-template-columns: 1fr 1fr; }
  .facts-strip .fact:nth-child(2) { border-right: none; }
  .facts-strip .fact { border-bottom: 1px solid var(--line); }
}

/* gallery */
.gallery .main {
  background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; display: flex; align-items: center; justify-content: center; min-height: 340px;
  box-shadow: var(--shadow);
}
.gallery .main img { max-height: 400px; width: auto; max-width: 100%; object-fit: contain; }
.gallery .thumbs { display: flex; gap: 10px; margin-top: 12px; }
.gallery .thumbs button {
  flex: 1; padding: 0; border: 2px solid var(--line); background: #fff; border-radius: 8px;
  cursor: pointer; overflow: hidden; height: 78px; display: flex; align-items: center; justify-content: center;
  transition: border-color .2s;
}
.gallery .thumbs button img { max-height: 66px; width: auto; max-width: 100%; object-fit: contain; }
.gallery .thumbs button.on, .gallery .thumbs button:hover { border-color: var(--brand); }
.gallery .cap { font-size: 12.5px; color: var(--gray); margin-top: 8px; }

/* highlight tiles */
.hl-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 22px 0 26px; }
@media (max-width: 560px) { .hl-grid { grid-template-columns: 1fr; } }
.hl { background: var(--light); border-left: 3px solid var(--brand); border-radius: 6px; padding: 12px 16px; }
.hl .k { font-size: 12px; color: var(--gray); }
.hl .v { font-weight: 800; font-size: 15.5px; margin-top: 2px; }

/* buy / quote card */
.buy-card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow); }
.buy-card h4 { font-size: 17px; margin-bottom: 6px; }
.buy-card p { color: var(--gray); font-size: 14px; margin-bottom: 16px; }
.buy-card .btn { width: 100%; justify-content: center; margin-bottom: 10px; }
.buy-card .line { display: flex; gap: 10px; align-items: center; font-size: 14px; color: var(--gray); margin-top: 6px; }
.buy-card .line b { color: var(--dark); }

/* model table */
.model-table { width: 100%; border-collapse: collapse; font-size: 14px; background: #fff; }
.model-table th { background: var(--dark); color: #fff; padding: 12px 14px; text-align: left; font-weight: 600; font-size: 13px; letter-spacing: .04em; }
.model-table td { border-bottom: 1px solid var(--line); padding: 12px 14px; }
.model-table tr:hover td { background: var(--light); }
.model-table .m { font-weight: 700; color: var(--brand); }
.table-note { font-size: 13px; color: var(--gray); margin-top: 12px; }

/* principle */
.principle { display: grid; grid-template-columns: 1.15fr 1fr; gap: 44px; align-items: center; }
@media (max-width: 900px) { .principle { grid-template-columns: 1fr; } }
.principle .fig { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 10px; box-shadow: var(--shadow); }
.principle h3 { font-size: 22px; margin-bottom: 12px; }
.principle p { color: var(--gray); margin-bottom: 12px; }

/* faq */
.faq details { border-bottom: 1px solid var(--line); padding: 16px 0; }
.faq details summary {
  cursor: pointer; font-weight: 700; font-size: 16px; list-style: none;
  display: flex; justify-content: space-between; gap: 16px; align-items: center;
}
.faq details summary::-webkit-details-marker { display: none; }
.faq details summary::after { content: "+"; color: var(--brand); font-size: 22px; line-height: 1; }
.faq details[open] summary::after { content: "\2212"; }
.faq details p { color: var(--gray); margin-top: 10px; font-size: 15px; }

/* application chips */
.chips { display: flex; flex-wrap: wrap; gap: 10px; margin: 18px 0 8px; }
.chips span {
  background: var(--light); border: 1px solid var(--line); border-radius: 999px;
  padding: 7px 16px; font-size: 14px; color: #33404d;
}

/* downloads */
.dl-list { display: grid; gap: 12px; margin-top: 18px; }
.dl-item {
  display: flex; align-items: center; gap: 14px; background: #fff; border: 1px solid var(--line);
  border-radius: 8px; padding: 14px 16px; transition: all .2s;
}
.dl-item:hover { border-color: var(--brand); box-shadow: var(--shadow); }
.dl-item .ic { flex: 0 0 38px; width: 38px; height: 38px; border-radius: 8px; background: var(--brand); color: #fff; display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 800; }
.dl-item b { display: block; font-size: 14.5px; }
.dl-item span { font-size: 12.5px; color: var(--gray); }

/* detail section grid */
.split-2 { display: grid; grid-template-columns: 1.35fr 1fr; gap: 40px; align-items: flex-start; }
@media (max-width: 900px) { .split-2 { grid-template-columns: 1fr; } }

/* detail page refinements */
@media (min-width: 901px) { .detail .gallery { position: sticky; top: 96px; } }
.principle .fig img { width: 100%; height: auto; display: block; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
@media (max-width: 720px) {
  .model-table { min-width: 620px; font-size: 13px; }
  .model-table th, .model-table td { padding: 10px 12px; }
}