:root {
  --ink: #23262b;
  --muted: #646970;
  --red: #d91c2a;
  --red-dark: #b31523;
  --paper: #fff;
  --wash: #f5f6f7;
  --line: #e3e5e8;
  --width: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 122px; scroll-padding-bottom: 90px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--red); outline-offset: 5px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { line-height: 1.14; letter-spacing: -.045em; text-wrap: balance; }
h1 { font-size: clamp(40px, 4.5vw, 64px); font-weight: 650; margin-bottom: 24px; }
h1 span { color: #4f545a; font-weight: 500; }
h2 { font-size: clamp(30px, 3.2vw, 42px); font-weight: 600; margin-bottom: 24px; }
h3 { font-size: 24px; font-weight: 600; }
p { color: var(--muted); }
.container { width: min(var(--width), calc(100% - 80px)); margin-inline: auto; }
.preview-note { padding: 5px 16px; background: var(--wash); font-size: 10px; text-align: center; letter-spacing: .08em; color: var(--muted); }
.skip { position: absolute; top: -100px; padding: 12px; background: white; z-index: 50; }
.skip:focus { top: 10px; }
header { position: sticky; top: 0; z-index: 20; background: var(--paper); border-bottom: 1px solid var(--line); }
.header-inner { min-height: 90px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.identity { display: flex; align-items: center; gap: 18px; line-height: 1.4; }
.brand-logo { width: 164px; height: auto; }
.managed-by { border-left: 1px solid var(--line); padding-left: 18px; font-size: 10px; color: var(--muted); }
.managed-by small { display: block; font-size: 12px; font-weight: 500; color: var(--ink); margin-top: 3px; }
header nav { display: flex; align-items: center; gap: 32px; font-size: 13px; font-weight: 500; }
header nav a { padding-block: 10px; }
header nav a:hover, header nav a[aria-current] { color: var(--red); }
header nav a[aria-current] { text-decoration: underline; text-underline-offset: 7px; }
header nav .nav-contact { background: var(--wash); border-radius: 6px; padding: 11px 17px; }
.hero { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center; padding-block: 64px 72px; }
.hero-copy { min-width: 0; }
.eyebrow { font-size: 10px; font-weight: 650; letter-spacing: .13em; color: var(--red-dark); margin-bottom: 20px; }
.lead { font-size: 17px; line-height: 1.7; max-width: 510px; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; margin-top: 28px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 28px; min-height: 50px; background: var(--red); color: white; padding: 14px 21px; border-radius: 6px; font-size: 13px; font-weight: 600; line-height: 1.5; transition: background .15s; }
.button:hover { background: var(--red-dark); }
.button span { font-size: 17px; font-weight: 400; }
.text-link { display: inline-block; padding-block: 6px; border-bottom: 1px solid #bdc0c4; font-size: 13px; font-weight: 600; }
.text-link:hover { color: var(--red); border-color: var(--red); }
.hero-foot { font-size: 12px; margin: 22px 0 0; }
.hero-visual { background: #eef7fc; border-radius: 12px; overflow: hidden; }
.hero-product { width: 100%; height: 398px; object-fit: cover; object-position: right center; }
.visual-caption { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px 22px; background: #f1f6f9; font-size: 10px; }
.visual-caption > span { letter-spacing: .1em; color: var(--muted); }
.visual-caption strong { font-size: 12px; font-weight: 600; }
.visual-caption a { font-size: 11px; font-weight: 500; }
.strip { border-block: 1px solid var(--line); margin: 0; }
.strip .container { display: grid; grid-template-columns: 1fr 1fr 1fr 1.3fr; gap: 0; }
.strip a { display: flex; align-items: center; gap: 12px; min-height: 67px; padding: 16px 24px; border-right: 1px solid var(--line); font-size: 12px; font-weight: 500; }
.strip a:first-child { padding-left: 0; }
.strip a:last-child { border-right: 0; padding-right: 0; }
.strip a span { color: #9a9fa5; font-size: 10px; }
.strip a b { margin-left: auto; font-weight: 400; }
.strip a:hover { color: var(--red); }
.section { padding-block: 76px; }
.section-heading { display: flex; align-items: flex-end; justify-content: space-between; gap: 44px; margin-bottom: 32px; }
.section-heading h2 { margin-bottom: 0; }
.section-heading p:last-child { max-width: 320px; font-size: 13px; margin-bottom: 0; }
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.product-card { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; background: white; transition: transform .15s, border-color .15s, box-shadow .15s; }
.product-card:hover { transform: translateY(-3px); border-color: #dc8390; box-shadow: 0 8px 25px #23262b09; }
.card-photo { width: 100%; height: 230px; object-fit: cover; object-position: center 47%; background: #e8f4fa; }
.product-type { height: 230px; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 12px; background: #f4f5f6; border-bottom: 1px solid var(--line); }
.product-type > span { font-size: 10px; letter-spacing: .16em; color: var(--muted); }
.product-type strong { font-size: 56px; line-height: 1.15; font-weight: 550; letter-spacing: -.06em; }
.product-type strong em { font-size: 25px; font-style: normal; letter-spacing: 0; }
.product-type small { color: var(--red-dark); font-size: 10px; letter-spacing: .18em; }
.card-copy { flex: 1; padding: 25px 24px 26px; }
.card-copy small { font-size: 9px; letter-spacing: .08em; color: var(--muted); }
.card-copy h3 { display: flex; align-items: center; justify-content: space-between; gap: 12px; font-size: 22px; margin: 15px 0 13px; }
.card-copy h3 span { display: grid; place-items: center; flex: 0 0 30px; height: 30px; border-radius: 50%; background: var(--wash); font-size: 20px; font-weight: 400; }
.product-card:hover h3 span { background: var(--red); color: white; }
.card-copy p { font-size: 12px; margin-bottom: 0; }
.intro, .guide { background: var(--wash); }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; padding-block: 70px; }
.intro-grid h2 { margin-bottom: 0; }
.intro-grid p { font-size: 14px; }
.intro-grid p.lead { font-size: 19px; color: #41464d; }
.intro-grid p:last-child { margin-bottom: 0; }
.product-details .section-heading { margin-bottom: 36px; }
.detail { display: grid; grid-template-columns: 1.15fr 1fr; gap: 72px; padding-block: 34px; border-bottom: 1px solid var(--line); }
.detail:last-child { padding-bottom: 0; border-bottom: 0; }
.detail .eyebrow { margin-bottom: 14px; }
.detail h3 { font-size: 29px; margin-bottom: 18px; }
.detail p { font-size: 14px; }
.detail > div > p:last-child { margin-bottom: 0; }
.spec { align-self: start; background: #f7f8f9; padding: 23px 25px; border-radius: 7px; }
.spec > span { display: block; font-size: 9px; letter-spacing: .1em; color: var(--muted); margin-bottom: 10px; }
.spec strong { display: block; font-size: 16px; font-weight: 550; line-height: 1.6; }
.spec p { font-size: 12px; margin-top: 12px; margin-bottom: 10px; }
.spec .text-link { color: var(--red-dark); border: 0; }
.catalog { padding-top: 0; }
.class-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.class-grid article { padding: 25px; border: 1px solid var(--line); border-radius: 8px; }
.class-grid article > span { display: inline-block; padding: 5px 12px; border-radius: 4px; color: var(--red-dark); background: #fff0f1; font-size: 20px; line-height: 1.4; font-weight: 650; margin-bottom: 22px; }
.class-grid h3 { font-size: 21px; min-height: 48px; margin-bottom: 16px; }
.class-grid p { font-size: 13px; margin-bottom: 0; }
.technical-note { font-size: 12px; line-height: 1.7; margin-block: 21px; }
.availability-note { font-size: 13px; color: #63464a; background: #fff4f5; border-left: 3px solid var(--red); padding: 13px 18px; border-radius: 0 5px 5px 0; margin-bottom: 20px; }
.table-wrap { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
caption { text-align: left; padding: 18px 24px; background: #f6f7f8; color: var(--muted); font-size: 12px; }
th, td { text-align: left; padding: 11px 24px; border-top: 1px solid var(--line); }
th { font-size: 11px; font-weight: 650; color: #545b63; background: #fafafa; }
tbody tr:nth-child(even) { background: #fafbfc; }
tbody tr:hover { background: #f3f5f7; }
.class-tag { display: inline-block; min-width: 27px; padding: 1px 8px; background: #fff0f1; color: var(--red-dark); border-radius: 3px; font-size: 12px; }
.catalog-download { background: var(--wash); padding-inline: 24px; border: 0; border-radius: 8px; }
.catalog-download .text-link { margin-bottom: 22px; }
.catalog-download p { font-size: 13px; }
.guide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 34px; }
.guide-grid article > span { display: block; border-top: 1px solid #cfd3d8; padding-top: 17px; margin-bottom: 22px; font-size: 12px; color: var(--red-dark); }
.guide-grid h3 { font-size: 22px; }
.guide-grid p { font-size: 14px; margin-bottom: 0; }
.faq { display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px; }
details { border-bottom: 1px solid var(--line); }
summary { cursor: pointer; padding: 22px 35px 22px 0; position: relative; font-size: 14px; font-weight: 500; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary:after { content: '+'; position: absolute; right: 5px; top: 18px; font-size: 20px; font-weight: 400; color: #858c94; }
summary:hover { color: var(--red-dark); }
details[open] summary:after { content: '−'; color: var(--red-dark); }
details p { font-size: 13px; margin-bottom: 24px; }
.contact { background: #23262b; color: white; padding-block: 70px; }
.contact-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 100px; }
.contact h2 { font-size: 42px; }
.contact p { color: #c6cbd1; max-width: 460px; font-size: 14px; }
.contact .eyebrow { color: #fcaab0; font-size: 10px; }
.contact .button { background: white; color: var(--red-dark); margin-top: 10px; }
.contact .button:hover { background: #fff0f1; }
.address { border: 1px solid #ffffff20; border-radius: 8px; padding: 28px 30px; }
.address h3 { font-size: 23px; }
.address address { font-style: normal; color: #c6cbd1; font-size: 14px; margin-bottom: 22px; }
.address a { display: block; font-size: 13px; margin-block: 12px; overflow-wrap: anywhere; }
.address a:hover { color: #ffbac0; }
footer { padding-block: 40px; }
.footer-inner { display: flex; justify-content: space-between; gap: 40px; }
.footer-logo { width: 140px; height: auto; }
.footer-inner p { font-size: 12px; margin: 16px 0 0; }
.footer-inner > div:last-child { display: flex; flex-direction: column; gap: 12px; font-size: 12px; }
.footer-inner a:hover { color: var(--red); }
.footer-inner small { color: var(--muted); margin-top: 6px; }
.mobile-contact { display: none; }
.distributor-hero figure { margin: 0; }
.distributor-hero figure img { width: 100%; height: 470px; object-fit: cover; object-position: center 42%; border-radius: 10px; }
.distributor-hero figcaption { font-size: 11px; color: var(--muted); padding-top: 12px; }
.stp-logo { width: 250px; height: auto; margin: 30px 0 20px; }
.distributor-hero > div > p:not(.eyebrow) { max-width: 470px; font-size: 15px; }
.riifo { background: #f2f5f8; }
.outline { border: 1px solid #b3bcc6; background: transparent; color: var(--ink); gap: 18px; }
.outline:hover { background: #e5ebf0; }
@media (min-width: 1500px) { :root { --width: 1280px; } .hero { gap: 80px; padding-block: 80px; } .hero-product { height: 430px; } }
@media (max-width: 1000px) {
  .container { width: calc(100% - 48px); }
  .managed-by { display: none; }
  .hero { gap: 32px; }
  .hero-product { height: 360px; }
  .intro-grid, .detail { gap: 40px; }
  .card-copy { padding: 22px 18px; }
  .card-copy h3 { font-size: 20px; }
  .class-grid article { padding: 22px 18px; }
  .strip a { padding-inline: 16px; font-size: 11px; }
  .strip a span { display: none; }
  .contact-grid { gap: 40px; }
  .faq { gap: 40px; }
}
@media (max-width: 700px) {
  html { scroll-padding-top: 130px; }
  .container { width: calc(100% - 40px); }
  .preview-note { padding-block: 4px; font-size: 9px; }
  .header-inner { display: block; min-height: 0; padding-block: 13px 0; }
  .identity { justify-content: space-between; gap: 14px; }
  .brand-logo { width: 128px; }
  .managed-by { display: block; border: 0; padding: 0; text-align: right; font-size: 9px; }
  .managed-by small { font-size: 10px; }
  header nav { justify-content: space-between; gap: 12px; margin-top: 10px; font-size: 12px; }
  header nav a { min-height: 44px; display: flex; align-items: center; }
  header nav .nav-contact { padding: 0; background: transparent; color: var(--red-dark); }
  .hero { grid-template-columns: 1fr; gap: 28px; padding-block: 34px 36px; }
  h1 { font-size: clamp(34px, 9.4vw, 45px); line-height: 1.13; margin-bottom: 19px; }
  h2 { font-size: clamp(29px, 7.7vw, 35px); }
  .eyebrow { font-size: 9px; letter-spacing: .09em; margin-bottom: 17px; }
  .lead { font-size: 15px; }
  .actions { gap: 18px; margin-top: 23px; }
  .button { min-height: 48px; font-size: 12px; padding-inline: 17px; gap: 18px; }
  .hero-foot { font-size: 11px; margin-top: 17px; }
  .hero-product { height: 275px; }
  .hero-visual { border-radius: 9px; }
  .visual-caption { padding: 14px 16px; gap: 8px; }
  .visual-caption > span { display: none; }
  .visual-caption strong { font-size: 11px; }
  .visual-caption a { font-size: 10px; }
  .strip .container { grid-template-columns: 1fr 1fr; }
  .strip a { padding: 13px 12px; min-height: 50px; font-size: 11px; }
  .strip a:first-child, .strip a:nth-child(3) { padding-left: 0; }
  .strip a:nth-child(2) { border-right: 0; padding-right: 0; }
  .strip a:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .strip a:nth-child(4) { padding-left: 12px; }
  .section { padding-block: 48px; }
  .section-heading { display: block; margin-bottom: 26px; }
  .section-heading p:last-child { margin-top: 17px; }
  .section-heading > .text-link { margin-top: 16px; }
  .product-grid { grid-template-columns: 1fr; gap: 18px; }
  .card-photo, .product-type { height: 205px; }
  .card-copy { padding: 22px; }
  .card-copy h3 { font-size: 23px; margin-block: 12px; }
  .intro-grid { grid-template-columns: 1fr; gap: 25px; padding-block: 46px; }
  .intro-grid h2 { font-size: 33px; }
  .intro-grid p.lead { font-size: 17px; }
  .intro-grid p { font-size: 14px; }
  .product-details .section-heading { margin-bottom: 7px; }
  .detail { grid-template-columns: 1fr; gap: 20px; padding-block: 28px; }
  .detail h3 { font-size: 26px; }
  .spec { padding: 21px; }
  .spec strong { font-size: 15px; }
  .catalog { padding-top: 8px; }
  .class-grid { grid-template-columns: 1fr; gap: 14px; }
  .class-grid article { padding: 22px; }
  .class-grid article > span { margin-bottom: 15px; font-size: 18px; }
  .class-grid h3 { min-height: 0; font-size: 21px; margin-bottom: 13px; }
  .availability-note { font-size: 12px; padding: 12px 14px; }
  caption { padding: 15px; font-size: 11px; }
  th, td { padding: 10px 14px; font-size: 12px; }
  th { font-size: 10px; }
  .technical-note { font-size: 11px; }
  .catalog-download { padding-inline: 19px; }
  .guide-grid { grid-template-columns: 1fr; gap: 28px; margin-top: 27px; }
  .guide-grid article > span { margin-bottom: 16px; }
  .guide-grid h3 { font-size: 22px; margin-bottom: 14px; }
  .guide-grid p { font-size: 13px; }
  .faq { grid-template-columns: 1fr; gap: 3px; }
  .faq h2 br { display: none; }
  summary { font-size: 13px; padding-block: 20px; }
  details p { font-size: 13px; }
  .contact { padding-block: 48px; }
  .contact-grid { grid-template-columns: 1fr; gap: 30px; }
  .contact h2 { font-size: 35px; }
  .contact .eyebrow { font-size: 9px; }
  .address { padding: 24px; }
  .address h3 { font-size: 21px; }
  footer { padding-block: 34px; }
  .footer-inner { flex-direction: column; gap: 27px; }
  .footer-logo { width: 125px; }
  .mobile-contact { display: block; position: sticky; bottom: 0; z-index: 25; padding: 9px 20px calc(9px + env(safe-area-inset-bottom)); background: white; border-top: 1px solid var(--line); }
  .mobile-contact .button { width: 100%; justify-content: center; gap: 16px; min-height: 46px; }
  .distributor-hero figure img { height: 335px; }
  .distributor-hero h1 { font-size: clamp(33px, 9vw, 43px); }
  .stp-logo { width: 235px; margin-block: 23px 18px; }
  .outline { line-height: 1.7; }
}
@media (max-width: 360px) {
  .container { width: calc(100% - 32px); }
  .actions { gap: 13px; }
  .actions .text-link { font-size: 12px; }
  .button { padding-inline: 14px; gap: 14px; }
  .hero-product { height: 245px; }
  .card-copy { padding-inline: 18px; }
  th, td { padding-inline: 11px; }
  .mobile-contact { padding-inline: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *:before, *:after { transition: none !important; animation: none !important; }
}