:root {
  --blue: #007cba;
  --orange: #ee7623;
  --green: #76bc43;
  --ink: #343434;
  --muted: #6d6e71;
  --light: #f2f2f2;
  --line: #d7d7d7;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: "Open Sans", Arial, sans-serif; -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, h4, p, figure { margin: 0; }
h1, h2, h3, h4 { font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif; }
p { line-height: 1.7; }
button { font: inherit; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline: 3px solid var(--orange); outline-offset: 4px; }
.skip { position: fixed; top: -100px; left: 20px; z-index: 100; padding: 12px 18px; background: #fff; }
.skip:not(:focus) { clip-path: inset(50%); width: 1px; height: 1px; padding: 0; overflow: hidden; white-space: nowrap; }
.skip:focus { top: 12px; }

.site-header { height: 96px; border-bottom: 1px solid #ddd; background: #fff; display: flex; align-items: center; gap: 42px; padding: 0 max(28px, calc((100vw - var(--max))/2)); position: relative; z-index: 30; }
.hnc-logo img { width: 145px; }
.main-nav { margin-left: auto; display: flex; gap: 34px; align-items: center; }
.main-nav a { min-height: 44px; display: inline-flex; align-items: center; font-size: 13px; }
.main-nav a[aria-current="page"] { color: var(--blue); font-weight: 700; }
.language { display: flex; gap: 8px; align-items: center; font-size: 12px; color: #8b8b8b; }
.language strong { color: var(--ink); }
.menu-toggle { display: none; border: 0; background: #fff; color: var(--orange); font-size: 12px; font-weight: 700; text-transform: uppercase; min-height: 44px; cursor: pointer; }
.brand-strip { max-width: var(--max); margin: auto; padding: 24px 0; display: flex; align-items: center; justify-content: space-between; gap: 30px; }
.brand-strip img { width: 190px; }
.brand-strip span { color: var(--muted); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }

.breadcrumbs { border-top: 1px solid #eee; border-bottom: 1px solid #eee; }
.breadcrumbs ol { max-width: var(--max); margin: auto; padding: 11px 0; display: flex; flex-wrap: wrap; gap: 8px; list-style: none; font-size: 12px; }
.breadcrumbs li:not(:last-child)::after { content: "/"; margin-left: 8px; color: #aaa; }
.breadcrumbs a:hover { color: var(--blue); }

.family-hero { min-height: 510px; display: flex; align-items: center; background-size: cover; background-position: center; position: relative; }
.family-hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(255,255,255,.97) 0%, rgba(255,255,255,.90) 40%, rgba(255,255,255,.15) 72%); }
.family-hero__inner { width: min(var(--max), calc(100% - 48px)); margin: auto; position: relative; z-index: 1; }
.family-hero h1 { color: var(--blue); font-size: clamp(58px, 7vw, 104px); line-height: .94; font-weight: 700; max-width: 740px; }
.family-hero h3 { max-width: 690px; margin-top: 24px; font-size: clamp(20px, 2vw, 31px); line-height: 1.35; font-weight: 400; }

.family-intro { max-width: var(--max); margin: auto; padding: 72px 0 44px; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 56px; }
.family-intro h2 { font-size: 35px; margin-bottom: 17px; }
.family-intro h5 { margin: 0 0 16px; color: var(--blue); font-size: 13px; letter-spacing: .08em; text-transform: uppercase; }
.official-list { margin: 0; padding-left: 20px; line-height: 1.75; }
.official-list li::marker { color: var(--orange); }

.family-products { max-width: var(--max); margin: auto; padding: 28px 0 95px; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 54px 34px; }
.product-card img { width: 100%; aspect-ratio: 5 / 3; object-fit: cover; filter: none; opacity: 1; mix-blend-mode: normal; }
.product-card h2 { color: var(--blue); font-size: 31px; line-height: 1.08; margin: 22px 0 13px; }
.product-card p { color: var(--muted); font-size: 15px; min-height: 78px; }
.txt-link { display: inline-flex; align-items: center; gap: 12px; margin-top: 18px; color: var(--blue); font-size: 14px; font-weight: 700; }
.txt-link::after { content: "›"; color: var(--orange); font-size: 22px; }

.collection-hero { min-height: 510px; display: flex; align-items: center; position: relative; overflow: hidden; background: url('/assets/products/polymers-filaments-home-bg.png') center / cover no-repeat; }
.collection-hero::after { content: ""; position: absolute; inset: 0; z-index: 1; background: rgba(255,255,255,.44); }
.collection-hero__inner { width: min(var(--max), calc(100% - 48px)); margin: auto; position: relative; z-index: 3; }
.collection-hero h1 { max-width: 590px; color: var(--blue); font-size: clamp(54px, 6.2vw, 91px); line-height: .92; }
.collection-hero__symbol { position: absolute; right: -130px; bottom: -145px; z-index: 2; width: 780px; height: auto; mix-blend-mode: multiply; opacity: .82; }
.collection-intro { max-width: var(--max); margin: auto; padding: 72px 0; display: grid; grid-template-columns: 1fr 1.7fr; gap: 72px; }
.collection-intro h2, .collection-products__heading h2 { font-size: 36px; line-height: 1.15; }
.section-rule { display: block; width: 58px; height: 4px; margin-top: 20px; background: #c7c7c7; }
.collection-products { padding: 64px 0 95px; background: var(--light); }
.collection-products__heading { max-width: var(--max); margin: 0 auto 36px; }
.collection-grid { max-width: var(--max); margin: auto; display: grid; grid-template-columns: 1fr 1fr; gap: 36px; }
.collection-card { min-width: 0; position: relative; display: flex; flex-direction: column; background: #fff; border-bottom: 3px solid var(--orange); }
.collection-card__image { position: relative; overflow: hidden; background: #eee; }
.collection-card__image img { width: 100%; aspect-ratio: 700 / 508; object-fit: cover; filter: none; opacity: 1; mix-blend-mode: normal; }
.collection-card__body { padding: 30px 30px 68px; }
.collection-card h2 { color: var(--blue); font-size: 34px; }
.collection-card p { margin-top: 15px; color: var(--muted); }
.collection-card__arrow { position: absolute; right: 0; bottom: 0; width: 46px; height: 46px; display: grid; place-items: center; background: var(--orange); color: #fff; font-size: 32px; line-height: 1; }

.product-hero { background: linear-gradient(135deg, #f7f7f7 0%, #e7eaec 100%); padding: 72px 0 76px; }
.product-hero__inner { max-width: var(--max); margin: auto; }
.product-hero__heading { max-width: 890px; }
.product-hero h1 { color: var(--blue); font-size: clamp(58px, 7vw, 96px); line-height: .95; }
.product-hero h3 { margin-top: 18px; font-size: clamp(21px, 2.2vw, 31px); line-height: 1.35; font-weight: 400; }
.product-hero__content { display: grid; grid-template-columns: 360px 1fr; gap: 52px; align-items: start; margin-top: 50px; }
.product-hero__content img { width: 100%; aspect-ratio: 5/3; object-fit: cover; }
.product-hero__content p { font-size: 18px; }

.accordion-area { background: var(--light); padding: 75px 0 95px; }
.accordion { max-width: 980px; margin: auto; }
.accordion-card { border: 0; border-bottom: 1px solid #bbb; background: transparent; }
.accordion-card:first-child { border-top: 1px solid #bbb; }
.accordion-card summary { list-style: none; min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 25px; color: var(--blue); cursor: pointer; font-family: "Arial Narrow", "Roboto Condensed", Arial, sans-serif; font-size: 27px; font-weight: 700; }
.accordion-card summary::-webkit-details-marker { display: none; }
.accordion-card summary::after { content: "+"; color: var(--orange); font-size: 34px; font-weight: 300; }
.accordion-card[open] summary::after { content: "−"; }
.accordion-body { padding: 4px 0 38px; }
.table-wrap { width: 100%; overflow-x: auto; }
.official-table { width: 100%; min-width: 650px; border-collapse: collapse; background: #fff; }
.official-table th, .official-table td { padding: 15px 17px; border-bottom: 1px solid #ddd; text-align: left; vertical-align: top; }
.official-table th { background: #5d5d5d; color: #fff; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.official-table tbody tr:nth-child(even) { background: #f7f7f7; }
.official-table td:first-child { color: var(--blue); font-weight: 700; }
.sheet-link { color: var(--blue); font-weight: 700; white-space: nowrap; }
.downloads-list { display: grid; gap: 12px; }
.download-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 28px; align-items: center; padding: 18px 20px; background: #fff; border-left: 4px solid var(--orange); }
.download-item h3 { color: var(--blue); font-size: 21px; }
.download-item p { margin-top: 5px; color: var(--muted); font-size: 14px; }
.download-link { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 11px 16px; border: 1px solid var(--blue); color: var(--blue); font-size: 13px; font-weight: 700; white-space: nowrap; }
.download-link:hover { background: var(--blue); color: #fff; }
.accordion-body .official-list { columns: 2; column-gap: 50px; }
.accordion-body .official-list li { break-inside: avoid; margin-bottom: 7px; }
.empty-detail { padding: 20px 0; color: var(--muted); }

.request-info { text-align: center; padding: 88px 24px 98px; }
.request-info h2 { font-size: 42px; }
.request-info .rule { width: 80px; height: 3px; margin: 22px auto; background: var(--orange); }
.request-info p { max-width: 680px; margin: auto; color: var(--muted); }
.request-info .button { display: inline-flex; align-items: center; gap: 20px; margin-top: 30px; padding: 15px 22px; background: var(--blue); color: #fff; font-weight: 700; }
.request-info .button::after { content: "›"; color: #fff; font-size: 24px; }
.back-row { max-width: var(--max); margin: 0 auto; padding: 0 0 70px; }

.footer { background: #343434; color: #fff; }
.footer__inner { max-width: var(--max); margin: auto; padding: 46px 0; display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 45px; }
.footer .hnc-logo img { filter: brightness(0) invert(1); width: 135px; }
.footer p, .footer a { color: #d6d6d6; font-size: 13px; }
.footer h4 { margin-bottom: 14px; font-size: 15px; }

@media (max-width: 1180px) {
  .site-header { padding-left: 24px; padding-right: 24px; }
  .brand-strip, .breadcrumbs ol, .family-intro, .family-products, .collection-intro, .collection-products__heading, .collection-grid, .product-hero__inner, .back-row, .footer__inner { width: calc(100% - 48px); }
}

@media (max-width: 860px) {
  .site-header { height: 76px; gap: 14px; }
  .hnc-logo img { width: 123px; }
  .main-nav { display: none; position: fixed; inset: 76px 0 0; z-index: 50; padding: 28px 24px; flex-direction: column; align-items: stretch; gap: 0; background: #fff; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 18px 0; border-top: 1px solid var(--line); font-size: 19px; }
  .language { margin-left: auto; }
  .menu-toggle { display: block; }
  .brand-strip { padding: 18px 0; }
  .brand-strip img { width: 155px; }
  .brand-strip span { display: none; }
  .breadcrumbs ol { padding: 10px 0; font-size: 10px; }
  .family-hero { min-height: 430px; background-position: 62% center; }
  .family-hero::after { background: linear-gradient(90deg, rgba(255,255,255,.98), rgba(255,255,255,.82) 70%, rgba(255,255,255,.35)); }
  .family-hero h1 { font-size: 55px; }
  .family-hero h3 { font-size: 20px; }
  .family-intro { grid-template-columns: 1fr; padding-top: 55px; gap: 34px; }
  .family-products { grid-template-columns: 1fr 1fr; }
  .collection-hero { min-height: 430px; }
  .collection-hero h1 { font-size: 58px; }
  .collection-hero__symbol { right: -260px; bottom: -90px; width: 670px; }
  .collection-intro { grid-template-columns: 1fr; gap: 30px; padding: 55px 0; }
  .collection-grid { grid-template-columns: 1fr; }
  .product-hero { padding: 55px 0 62px; }
  .product-hero h1 { font-size: 58px; overflow-wrap: anywhere; }
  .product-hero h3 { font-size: 20px; }
  .product-hero__content { grid-template-columns: 1fr; gap: 28px; margin-top: 38px; }
  .product-hero__content img { max-width: 520px; }
  .accordion { width: calc(100% - 48px); }
  .accordion-body .official-list { columns: 1; }
  .download-item { grid-template-columns: 1fr; gap: 14px; }
  .download-link { justify-self: start; }
  .footer__inner { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .family-products { grid-template-columns: 1fr; gap: 44px; }
  .product-card p { min-height: 0; }
  .collection-hero { min-height: 350px; }
  .collection-hero h1 { font-size: 47px; }
  .collection-hero__symbol { right: -245px; bottom: -40px; width: 530px; }
  .collection-products { padding: 50px 0 70px; }
  .collection-card__body { padding: 24px 24px 64px; }
  .collection-card h2 { font-size: 32px; }
  .product-hero h1 { font-size: 49px; }
  .accordion-area { padding: 55px 0 70px; }
  .accordion-card summary { min-height: 70px; font-size: 22px; }
  .request-info { padding: 68px 24px 78px; }
  .request-info h2 { font-size: 35px; }
}

@media (prefers-reduced-motion: reduce) { * { scroll-behavior: auto !important; } }