:root {
  --ink: #202224;
  --muted: #65686b;
  --line: #d5d6d7;
  --soft: #f4f4f4;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--ink);
  background: #fff;
  font: 16px/1.65 Inter, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { flex: 1; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 100; background: #fff; padding: 9px 13px; }
.skip-link:focus { top: 12px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }

.site-header { position: relative; z-index: 20; background: #fff; }
.identity-row { min-height: 108px; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding-top: 18px; padding-bottom: 18px; }
.brand { display: inline-flex; align-items: center; gap: 11px; min-width: 0; }
.brand-logo-frame { width: 124px; height: 116px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.brand-logo-frame img { width: 100%; height: 100%; object-fit: contain; }
.brand-company { font-size: 1.15rem; font-weight: 650; line-height: 1.4; }
.header-contact { display: grid; gap: 3px; text-align: right; font-size: .84rem; line-height: 1.65; color: #494c4e; flex-shrink: 0; }
.header-contact span { font-weight: 650; }
.header-contact a:hover { text-decoration: underline; text-underline-offset: 3px; }
.nav-shell { border-top: 1px solid #ececec; border-bottom: 1px solid var(--line); }
.nav-row { min-height: 40px; display: flex; }
.desktop-nav { display: flex; align-items: stretch; }
.nav-link { position: relative; min-height: 40px; padding: 0 20px; display: inline-flex; align-items: center; border-right: 1px solid #ececec; font-size: .82rem; font-weight: 620; }
.nav-link:first-child { border-left: 1px solid #ececec; }
.nav-link::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: #303234; transform: scaleX(0); transition: transform .18s; }
.nav-link:hover::after, .nav-link.is-active::after { transform: scaleX(1); }
.nav-link svg { width: 17px; height: 17px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: square; stroke-linejoin: miter; }
.mobile-toggle { display: none; width: 42px; height: 38px; background: #fff; border: 1px solid #aaa; cursor: pointer; }

.eyebrow { text-transform: uppercase; letter-spacing: .18em; font-size: .72rem; color: #55585a; font-weight: 800; }
.eyebrow.light { color: #e7e7e7; }
.section-label { margin-bottom: 13px; }
.hero-slider { width: min(var(--max), calc(100% - 40px)); min-height: 290px; margin: 16px auto 0; padding: 0 44px; position: relative; overflow: hidden; display: flex; align-items: center; color: #fff; background: #333; }
.hero-slides, .hero-slide { position: absolute; inset: 0; }
.hero-slide { background-position: center; background-size: cover; opacity: 0; transition: opacity .65s; }
.hero-slide.is-active { opacity: 1; }
.hero-copy { position: relative; z-index: 2; max-width: 590px; }
.hero-copy h1 { margin: 0 0 15px; font-size: clamp(2.2rem, 4.5vw, 3.7rem); line-height: 1.03; letter-spacing: -.045em; }
.hero-copy p { margin: 0; font-size: 1.05rem; font-weight: 600; text-shadow: 0 1px 14px #000; }
.hero-dots { position: absolute; z-index: 3; left: 44px; bottom: 18px; display: flex; gap: 8px; }
.hero-dot { width: 24px; height: 3px; padding: 0; border: 0; background: #ffffff73; cursor: pointer; }
.hero-dot.is-active { background: #fff; }
.series-hero { width: min(var(--max), calc(100% - 40px)); min-height: 290px; margin: 16px auto 0; padding: 0 44px; display: flex; align-items: center; color: #fff; background-position: center; background-size: cover; }
.series-hero-copy h1 { max-width: 760px; margin: 0; font-size: clamp(2.2rem, 4.5vw, 3.7rem); line-height: 1.03; letter-spacing: -.045em; }
.value-shell { padding-top: 12px; }
.value-strip { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.value-item { min-height: 78px; padding: 15px 20px; display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--line); }
.value-item:last-child { border-right: 0; }
.value-item strong { font-size: .95rem; }
.value-item span { margin-top: 3px; color: var(--muted); font-size: .76rem; }

.product-section { padding: 28px 0 14px; }
.line-product-grid { display: grid; gap: 1px; padding: 1px; background: var(--line); }
.line-product-grid.two-up { grid-template-columns: repeat(2, 1fr); }
.line-product-grid.four-up { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.line-product-card { min-width: 0; background: #fff; }
.line-product-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.line-product-card span { min-height: 43px; padding: 9px 12px; display: flex; align-items: center; border-top: 1px solid var(--line); overflow: hidden; font-size: .82rem; font-weight: 700; line-height: 1.2; white-space: nowrap; text-overflow: ellipsis; }
.line-product-card:hover { background: var(--soft); }
.hot-products-section { padding: 14px 0 38px; }
.simple-product-list { border-top: 1px solid var(--ink); }
.simple-product-row { min-height: 51px; padding: 10px 0; display: flex; align-items: center; border-bottom: 1px solid var(--line); font-size: .9rem; font-weight: 620; }
.simple-product-row:hover { color: #000; }

.inner-hero { width: min(var(--max), calc(100% - 40px)); min-height: 270px; margin: 16px auto 0; padding: 0 38px; display: flex; align-items: center; color: #fff; background-position: center; background-size: cover; }
.inner-hero .wrap { width: 100%; }
.inner-hero h1 { max-width: 760px; margin: 10px 0 12px; font-size: clamp(2.25rem, 4.2vw, 3.7rem); line-height: 1.05; letter-spacing: -.045em; }
.inner-hero p { max-width: 700px; margin: 0; color: #eee; }
.about-hero { background-image: url("hero-about.webp"); }
.contact-hero { background-image: url("hero-contact.webp"); }
.breadcrumb-bar { border-bottom: 1px solid var(--line); padding: 11px 0; }
.breadcrumbs { font-size: .78rem; }
.breadcrumbs ol { display: flex; flex-wrap: wrap; list-style: none; margin: 0; padding: 0; }
.breadcrumbs li { display: inline-flex; align-items: center; }
.breadcrumbs li + li::before { content: "›"; margin: 0 8px; color: #999; }
.breadcrumbs a { font-weight: 650; }
.breadcrumbs [aria-current="page"] { color: var(--muted); }

.about-profile, .certificate-section { padding: 34px 0; }
.about-profile-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-profile h2 { margin: 14px 0 18px; font-size: clamp(1.75rem, 3vw, 2.3rem); line-height: 1.18; }
.about-profile p { margin: 0; color: #494c4e; line-height: 1.75; }
.about-profile figure, .certificate-grid figure { margin: 0; }
.about-profile figure img { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.certificate-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
.certificate-grid img { width: 100%; aspect-ratio: 3 / 4; object-fit: contain; }

.series-catalog-section { padding: 28px 0 54px; }
.series-catalog-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 30px; align-items: start; }
.catalog-sidebar { position: sticky; top: 18px; border: 1px solid #cfd0d1; background: #fff; }
.catalog-sidebar nav { display: grid; }
.catalog-sidebar a { min-height: 42px; padding: 9px 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border-bottom: 1px solid #dedfe0; border-left: 2px solid transparent; color: #4d5052; font-size: .78rem; line-height: 1.35; }
.catalog-sidebar a:last-child { border-bottom: 0; }
.catalog-sidebar a:hover { background: #f6f6f6; color: #111; }
.catalog-sidebar a.is-active { border-left-color: #292b2d; background: #eeeeef; color: #111; font-weight: 700; }
.catalog-sidebar .catalog-series-link { font-weight: 700; }
.catalog-sidebar a:focus-visible { outline: 2px solid #555; outline-offset: -2px; }
.catalog-showcase-panel[hidden] { display: none; }
.catalog-product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin: 0; }
.catalog-product-card { display: flex; min-width: 0; flex-direction: column; border: 1px solid var(--line); background: #fff; }
.catalog-product-card:hover { background: #f7f7f7; }
.catalog-product-card img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; border-bottom: 1px solid var(--line); }
.catalog-product-copy { min-width: 0; min-height: 47px; padding: 9px 11px; display: flex; align-items: center; }
.catalog-product-copy strong { display: block; width: 100%; overflow: hidden; font-size: .78rem; line-height: 1.2; white-space: nowrap; text-overflow: ellipsis; }

.product-detail-section { padding: 36px 0 64px; }
.product-detail-layout { display: grid; grid-template-columns: 235px minmax(0, 1fr); gap: 30px; align-items: start; }
.product-detail-heading { margin: 0 0 22px; }
.product-detail-heading h1 { margin: 7px 0 0; font-size: clamp(1.9rem, 3.4vw, 2.7rem); line-height: 1.18; letter-spacing: -.025em; }
.product-image-gallery { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin: 0 0 27px; }
.detail-product-image { margin: 0; border: 1px solid var(--line); overflow: hidden; }
.detail-product-image img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; background: #fff; }
.lead { margin: 14px 0 30px; color: #444749; font-size: 1.08rem; line-height: 1.7; }
.product-description { margin: 14px 0 30px; color: #444749; font-size: 1.08rem; line-height: 1.7; }
.product-description p { margin: 0 0 16px; }
.spec-list { margin: 0; border-top: 1px solid var(--ink); }
.spec-list div { display: grid; grid-template-columns: 160px 1fr; gap: 23px; padding: 15px 0; border-bottom: 1px solid var(--line); }
.spec-list dt { color: var(--muted); font-size: .72rem; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.spec-list dd { margin: 0; color: #484b4d; }

.contact-content { padding: 38px 0 60px; }
.contact-company { max-width: 100%; }
.contact-company dl { margin: 0; }
.contact-company dl div { display: grid; grid-template-columns: 82px minmax(0, 1fr); gap: 0; margin: 8px 0; }
.contact-company dt { font-size: 1rem; font-weight: 650; line-height: 1.65; }
.contact-company dd { margin: 0; color: #3e4143; }
.contact-company a:hover { text-decoration: underline; text-underline-offset: 3px; }
.inquiry-block { width: 75%; margin: 40px auto 0 0; }
.inquiry-block h2 { margin: 0 0 21px; font-size: 1.5rem; line-height: 1.2; font-weight: 500; }
.product-page-inquiry { margin-top: 42px; }
.inquiry-form { width: 100%; margin: 0; }
.inquiry-field { display: grid; grid-template-columns: 82px minmax(0, 1fr); gap: 0; align-items: start; margin-bottom: 13px; text-align: left; }
.inquiry-field label { display: block; margin: 0; padding-top: 7px; color: #252729; font-size: 1rem; font-weight: 650; line-height: 1.65; text-align: left; }
.inquiry-field input, .inquiry-field textarea, .inquiry-field select { display: block; width: 100%; min-width: 0; margin: 0; padding: 9px 11px; color: var(--ink); background: #fff; border: 1px solid #afb1b3; border-radius: 0; box-shadow: none; }
.inquiry-field input, .inquiry-field select { min-height: 46px; }
.inquiry-field textarea { min-height: 150px; resize: vertical; }
.inquiry-field input:focus, .inquiry-field textarea:focus, .inquiry-field select:focus { outline: 1px solid #555; border-color: #555; }
.inquiry-actions { display: grid; grid-template-columns: 82px minmax(0, 1fr); gap: 0; padding-top: 3px; text-align: left; }
.send-button { grid-column: 2; justify-self: start; min-width: 72px; padding: 7px 16px; color: #252729; background: #fff; border: 1px solid #606365; font-size: .82rem; cursor: pointer; }
.send-button:hover { color: #fff; background: #393b3d; }
.send-button:disabled { cursor: wait; opacity: .55; }
.form-status { min-height: 20px; margin: 9px 0 0 82px; color: var(--muted); font-size: .82rem; text-align: left; }
.form-status.is-error { color: #8a2d2d; }
.form-status.is-success { color: #315b39; }
.form-trap { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; }
.inquiry-success { padding: 68px 0; }
.inquiry-success h1 { margin: 9px 0 12px; font-size: clamp(2rem, 4vw, 3rem); line-height: 1.15; }
.inquiry-success p { max-width: 660px; margin: 0; color: var(--muted); }
.success-links { display: flex; flex-wrap: wrap; gap: 22px; margin-top: 30px; }
.success-links a { padding-bottom: 2px; border-bottom: 1px solid #777; font-size: .86rem; font-weight: 650; }

footer { padding: 10px 0; border-top: 1px solid var(--line); background: #f4f4f4; }
.copyright { min-height: 22px; display: flex; align-items: center; font-size: .76rem; }

@media (max-width: 800px) {
  .identity-row { flex-wrap: wrap; gap: 8px 16px; min-height: 100px; }
  .brand { flex: 1; }
  .header-contact { order: 3; width: 100%; text-align: left; display: flex; flex-wrap: wrap; gap: 4px 22px; padding-left: 73px; font-size: .76rem; }
  .mobile-toggle { display: block; }
  .nav-shell .wrap { width: 100%; }
  .desktop-nav { display: none; width: 100%; padding: 0 20px 12px; flex-direction: column; }
  .desktop-nav.open { display: flex; }
  .nav-link, .nav-link:first-child { min-height: 43px; padding: 0; border: 0; border-bottom: 1px solid #eee; }
  .nav-link svg { margin-left: 1px; }
  .value-strip { grid-template-columns: 1fr; }
  .value-item { min-height: 67px; border-right: 0; border-bottom: 1px solid var(--line); }
  .value-item:last-child { border-bottom: 0; }
  .line-product-grid.four-up { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .series-catalog-layout { grid-template-columns: 1fr; gap: 28px; }
  .catalog-sidebar { position: static; }
  .catalog-sidebar nav { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalog-sidebar a { border-bottom: 1px solid #dedfe0; }
  .catalog-product-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .product-detail-layout { grid-template-columns: 1fr; gap: 32px; }
  .about-profile-grid { grid-template-columns: 1fr; gap: 24px; }
  .certificate-grid { gap: 14px; }
}

@media (max-width: 560px) {
  .wrap { width: calc(100% - 28px); }
  .brand-company { max-width: none; font-size: .9rem; }
  .brand-logo-frame { width: 84px; height: 84px; }
  .header-contact { padding-left: 0; gap: 2px 12px; font-size: .73rem; }
  .mobile-toggle { flex-shrink: 0; }
  .hero-slider, .series-hero, .inner-hero { width: calc(100% - 28px); min-height: 245px; padding: 0 24px; }
  .hero-dots { left: 24px; }
  .hero-copy h1 { font-size: 2.05rem; }
  .hero-copy p { font-size: .93rem; }
  .line-product-grid, .line-product-grid.four-up, .catalog-product-grid, .certificate-grid { grid-template-columns: 1fr; }
  .catalog-sidebar nav { grid-template-columns: 1fr; }
  .spec-list div { grid-template-columns: 1fr; gap: 5px; }
  .contact-company dl div { display: block; margin: 13px 0; }
  .contact-company dt { margin-bottom: 2px; }
  .inquiry-block { width: 100%; }
  .inquiry-field { grid-template-columns: 1fr; gap: 6px; }
  .inquiry-field label { padding-top: 0; }
  .inquiry-actions { grid-template-columns: 1fr; gap: 0; }
  .inquiry-actions span { display: none; }
  .send-button { grid-column: 1; }
  .form-status { margin-left: 0; }
}

.inquiry-toast { position: fixed; z-index: 9999; left: 50%; top: 24px; transform: translateX(-50%); width: max-content; max-width: calc(100vw - 32px); padding: 15px 22px; color: #fff; background: #343638; border-radius: 3px; box-shadow: 0 3px 14px #0002; font-size: 14px; line-height: 1.5; text-align: center; pointer-events: none; }
.inquiry-toast[hidden] { display:none; }

.catalog-product-card > img { object-fit: contain; background: #fff; }