:root {
  --blue: #0b5cab;
  --blue-deep: #07345f;
  --blue-soft: #e9f2fa;
  --orange: #f47b20;
  --ink: #13202b;
  --muted: #66737f;
  --line: #dfe5e9;
  --surface: #f5f7f8;
  --white: #fff;
  --shadow: 0 22px 60px rgba(15, 39, 62, .14);
  --container: min(1180px, calc(100% - 48px));
  --header: 78px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header); }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Inter, "Segoe UI", Arial, sans-serif; font-size: 16px; line-height: 1.65; letter-spacing: 0; overflow-x: hidden; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; letter-spacing: 0; }
button { color: inherit; }
.container { width: var(--container); margin-inline: auto; }
.section { padding: 112px 0; }
.skip-link { position: fixed; left: 16px; top: -60px; z-index: 999; padding: 10px 16px; background: #fff; color: var(--ink); box-shadow: var(--shadow); }
.skip-link:focus { top: 12px; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 100; height: var(--header); color: var(--white); transition: background .3s ease, box-shadow .3s ease, color .3s ease; }
.site-header.is-scrolled, .site-header.menu-open { color: var(--ink); background: rgba(255,255,255,.97); box-shadow: 0 8px 30px rgba(15,39,62,.1); backdrop-filter: blur(14px); }
.header-inner { width: var(--container); height: 100%; margin-inline: auto; display: flex; align-items: center; gap: 32px; }
.brand { display: flex; align-items: center; margin-right: auto; }
.brand img { width: 152px; height: 51px; object-fit: contain; filter: brightness(0) invert(1); transition: filter .3s ease; }
.site-header.is-scrolled .brand img, .site-header.menu-open .brand img { filter: none; }
.desktop-nav { display: flex; gap: 30px; align-items: center; }
.desktop-nav a { position: relative; font-size: 14px; font-weight: 650; }
.desktop-nav a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -9px; height: 2px; background: var(--orange); transition: right .25s ease; }
.desktop-nav a:hover::after, .desktop-nav a:focus-visible::after { right: 0; }
.header-cta { min-height: 44px; display: inline-flex; align-items: center; gap: 8px; padding: 0 18px; background: var(--orange); color: #fff; font-size: 14px; font-weight: 750; }
.header-cta svg { width: 16px; }
.menu-toggle { display: none; width: 44px; height: 44px; align-items: center; justify-content: center; border: 0; background: transparent; cursor: pointer; }
.mobile-nav { display: none; }

.hero { position: relative; min-height: 760px; height: 100svh; max-height: 940px; overflow: hidden; background: #e9eef2; }
.hero-slide { position: absolute; inset: 0; opacity: 0; visibility: hidden; transform: scale(1.025); transition: opacity .75s ease, visibility .75s ease, transform 1.4s ease; }
.hero-slide.is-active { opacity: 1; visibility: visible; transform: scale(1); }
.hero-slide > img { width: 100%; height: 100%; object-fit: cover; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(6,28,48,.88) 0%, rgba(6,28,48,.56) 46%, rgba(6,28,48,.08) 78%); }
.hero-content { position: absolute; z-index: 2; left: max(24px, calc((100vw - 1180px) / 2)); top: 50%; width: min(720px, calc(100% - 48px)); transform: translateY(-48%); color: #fff; }
.hero-content h1, .hero-content h2 { margin: 0 0 24px; max-width: 760px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(48px, 5.2vw, 78px); line-height: 1.04; font-weight: 500; letter-spacing: 0; }
.hero-content p { max-width: 660px; margin: 0 0 34px; color: rgba(255,255,255,.84); font-size: 18px; line-height: 1.7; }
.hero-content-dark { color: var(--ink); }
.hero-content-dark p { max-width: 570px; color: #52606c; }
.product-hero-bg, .ring-hero { position: absolute; inset: 0; background: linear-gradient(110deg, #f4f7f8 0 50%, #dbe9f4 50% 100%); }
.product-hero-bg img { position: absolute; width: min(47vw, 720px); right: 5vw; top: 50%; transform: translateY(-47%); filter: drop-shadow(0 30px 28px rgba(15,39,62,.19)); }
.ring-hero { background: linear-gradient(112deg, #fff 0 54%, #e9edf0 54% 100%); }
.ring-hero img { position: absolute; width: min(50vw, 760px); right: 3vw; top: 51%; transform: translateY(-50%); filter: drop-shadow(0 28px 24px rgba(15,39,62,.17)); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 24px; border: 1px solid transparent; border-radius: 2px; font-size: 14px; font-weight: 760; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease; }
.btn:hover { transform: translateY(-2px); }
.btn svg { width: 17px; height: 17px; }
.btn-primary { background: var(--orange); color: #fff; }
.btn-primary:hover { background: #dd6816; }
.btn-ghost { color: #fff; border-color: rgba(255,255,255,.52); backdrop-filter: blur(5px); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-dark { background: var(--ink); color: #fff; }
.hero-controls { position: absolute; z-index: 5; right: max(24px, calc((100vw - 1180px) / 2)); bottom: 92px; display: flex; align-items: center; gap: 14px; }
.hero-controls > button { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.25); background: rgba(15,31,43,.48); color: #fff; cursor: pointer; }
.hero-controls svg { width: 17px; }
.hero-dots { display: flex; gap: 7px; }
.hero-dots button { width: 26px; height: 3px; padding: 0; border: 0; background: rgba(255,255,255,.42); cursor: pointer; transition: width .25s ease, background .25s ease; }
.hero-dots button.is-active { width: 44px; background: var(--orange); }
.hero-proof { position: absolute; z-index: 4; inset: auto 0 0; height: 64px; display: flex; justify-content: center; align-items: center; gap: 0; background: rgba(4,26,45,.9); color: rgba(255,255,255,.8); font-size: 13px; }
.hero-proof span { padding: 0 36px; border-right: 1px solid rgba(255,255,255,.16); }
.hero-proof span:last-child { border: 0; }

.section-heading { margin-bottom: 56px; }
.split-heading { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(280px, .75fr); align-items: end; gap: 80px; }
.section-heading h2, .capability-copy h2, .about-copy h2, .faq-intro h2, .contact-copy h2 { margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(38px, 4vw, 58px); line-height: 1.08; font-weight: 500; letter-spacing: 0; }
.section-heading p { margin: 0; color: var(--muted); }
.section-label { margin: 0 0 18px; color: var(--blue); font-size: 12px; line-height: 1; font-weight: 800; text-transform: uppercase; letter-spacing: 0; }
.centered-heading { max-width: 760px; margin: 0 auto 46px; text-align: center; }
.centered-heading p:not(.section-label) { margin-top: 22px; }

.intro { background: #fff; }
.parts-showcase { display: grid; grid-template-columns: 1.25fr .75fr; grid-template-rows: 1fr 1fr; gap: 18px; }
.part-feature { display: grid; grid-template-columns: minmax(160px,.8fr) 1.2fr; min-height: 300px; overflow: hidden; background: var(--surface); }
.part-feature-large { grid-row: 1 / 3; display: flex; flex-direction: column; min-height: 618px; }
.part-image { min-height: 0; overflow: hidden; background: #edf1f3; }
.part-image img { width: 100%; height: 100%; object-fit: cover; transition: transform .6s ease; }
.part-feature:hover .part-image img { transform: scale(1.035); }
.part-feature-large .part-image { height: 390px; }
.part-copy { padding: 32px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; }
.part-copy > span { color: var(--orange); font-size: 12px; font-weight: 800; }
.part-copy h3 { margin: 8px 0 8px; font-size: 25px; line-height: 1.2; }
.part-copy p { margin: 0; color: var(--muted); font-size: 14px; }
.part-copy a, .text-link { display: inline-flex; align-items: center; gap: 7px; margin-top: 20px; color: var(--blue); font-size: 14px; font-weight: 750; }
.part-copy a svg, .text-link svg { width: 16px; }
.dark-feature { color: #fff; background: var(--blue-deep); }
.dark-feature .part-image { background: #e9eff3; }
.dark-feature .part-copy p { color: rgba(255,255,255,.68); }
.quality-strip { display: grid; grid-template-columns: repeat(4,1fr); margin-top: 44px; border-block: 1px solid var(--line); }
.quality-strip > div { display: grid; grid-template-columns: 30px 1fr; padding: 26px 20px; border-right: 1px solid var(--line); }
.quality-strip > div:last-child { border: 0; }
.quality-strip svg { grid-row: 1/3; width: 21px; color: var(--blue); }
.quality-strip strong { font-size: 14px; }
.quality-strip span { color: var(--muted); font-size: 12px; }

.models { background: var(--surface); }
.model-tabs { width: max-content; display: flex; margin: 0 auto 30px; padding: 4px; background: #e6ebee; }
.model-tabs button { min-width: 128px; padding: 11px 20px; border: 0; background: transparent; color: var(--muted); font-weight: 750; cursor: pointer; }
.model-tabs button.is-active { background: #fff; color: var(--ink); box-shadow: 0 5px 18px rgba(15,39,62,.1); }
.model-panel { display: none; grid-template-columns: 1.06fr .94fr; min-height: 610px; background: #fff; box-shadow: var(--shadow); }
.model-panel.is-active { display: grid; }
.model-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--line); }
.model-gallery img { width: 100%; height: 100%; object-fit: cover; background: #f4f4f4; }
.model-gallery .model-main { grid-column: 1 / -1; min-height: 395px; }
.model-copy { padding: 66px 56px; display: flex; flex-direction: column; justify-content: center; }
.model-number { margin: 0 0 14px; color: var(--orange); font-size: 13px; font-weight: 850; }
.model-copy h3 { margin: 0 0 18px; font-size: clamp(28px,3vw,40px); line-height: 1.15; }
.model-copy > p:not(.model-number) { margin: 0 0 26px; color: var(--muted); }
.model-copy dl { margin: 0; border-top: 1px solid var(--line); }
.model-copy dl div { display: grid; grid-template-columns: 110px 1fr; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.model-copy dt { font-size: 13px; font-weight: 800; }
.model-copy dd { margin: 0; color: var(--muted); font-size: 13px; }

.applications { background: var(--blue-deep); color: #fff; }
.applications .section-heading p { color: rgba(255,255,255,.68); }
.material-grid { display: grid; grid-template-columns: repeat(3,1fr); border: 1px solid rgba(255,255,255,.14); }
.material-grid article { min-height: 220px; padding: 34px; border-right: 1px solid rgba(255,255,255,.14); border-bottom: 1px solid rgba(255,255,255,.14); background: linear-gradient(145deg, rgba(255,255,255,.04), transparent); }
.material-grid article:nth-child(3n) { border-right: 0; }
.material-grid article:nth-last-child(-n+3) { border-bottom: 0; }
.material-grid span { color: var(--orange); font-family: Georgia, serif; font-size: 14px; }
.material-grid h3 { margin: 50px 0 7px; font-size: 23px; }
.material-grid p { margin: 0; color: rgba(255,255,255,.6); font-size: 14px; }
.application-note { display: flex; align-items: flex-start; gap: 12px; margin: 26px 0 0; color: rgba(255,255,255,.62); font-size: 13px; }
.application-note svg { flex: 0 0 18px; margin-top: 3px; }

.capabilities { padding-bottom: 0; background: #fff; }
.capability-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: stretch; }
.capability-media { position: relative; min-height: 720px; overflow: hidden; }
.capability-media > img { width: 100%; height: 100%; object-fit: cover; }
.media-caption { position: absolute; inset: auto 0 0; display: flex; justify-content: space-between; align-items: center; gap: 20px; padding: 20px 28px; background: rgba(6,36,63,.9); color: #fff; }
.media-caption strong { font-size: 14px; }
.media-caption span { color: rgba(255,255,255,.68); font-size: 12px; text-align: right; }
.capability-copy { padding: 52px 0 48px 74px; }
.capability-copy > p:not(.section-label) { color: var(--muted); }
.process-list { margin: 34px 0; padding: 0; list-style: none; border-top: 1px solid var(--line); }
.process-list li { display: grid; grid-template-columns: 52px 1fr; gap: 14px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.process-list li > span { color: var(--orange); font-size: 12px; font-weight: 800; }
.process-list h3 { margin: 0 0 4px; font-size: 16px; }
.process-list p { margin: 0; color: var(--muted); font-size: 13px; }
.capability-stats { display: grid; grid-template-columns: repeat(3,1fr); margin-top: 82px; background: var(--blue); color: #fff; }
.capability-stats div { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 18px; min-height: 138px; padding: 26px 34px; border-right: 1px solid rgba(255,255,255,.18); }
.capability-stats div:last-child { border: 0; }
.capability-stats strong { font-family: Georgia,serif; font-size: 46px; font-weight: 500; }
.capability-stats span { color: rgba(255,255,255,.72); font-size: 13px; line-height: 1.4; }

.cases { background: var(--surface); }
.case-rail { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; }
.case-rail article { background: #fff; box-shadow: 0 16px 44px rgba(15,39,62,.09); }
.case-rail img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.case-rail article > div { padding: 26px; }
.case-rail span { color: var(--orange); font-size: 11px; font-weight: 800; text-transform: uppercase; }
.case-rail h3 { margin: 8px 0; font-size: 20px; }
.case-rail p { margin: 0; color: var(--muted); font-size: 14px; }

.about { padding-bottom: 0; }
.about-grid { display: grid; grid-template-columns: .82fr 1.18fr; gap: 80px; align-items: center; }
.about-copy p:not(.section-label) { color: var(--muted); }
.about-copy strong { color: var(--ink); }
.about-media { position: relative; }
.about-media img { width: 100%; aspect-ratio: 1.46/1; object-fit: cover; box-shadow: var(--shadow); }
.history-mark { position: absolute; left: -36px; bottom: -34px; width: 154px; height: 154px; display: flex; flex-direction: column; justify-content: center; padding: 24px; background: var(--orange); color: #fff; }
.history-mark span { font-size: 12px; }
.history-mark strong { font-family: Georgia,serif; font-size: 42px; line-height: 1; font-weight: 500; }
.credentials { margin-top: 126px; padding: 70px 0 100px; border-top: 1px solid var(--line); }
.credential-intro { display: grid; grid-template-columns: .7fr 1.3fr; gap: 80px; margin-bottom: 36px; }
.credential-intro h3 { margin: 0; font-family: Georgia,serif; font-size: 36px; line-height: 1.15; font-weight: 500; }
.credential-intro p { margin: 0; color: var(--muted); }
.certificate-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 14px; }
.certificate { display: flex; flex-direction: column; padding: 0; border: 1px solid var(--line); background: #fff; text-align: left; cursor: zoom-in; }
.certificate img { width: 100%; aspect-ratio: 4/3; object-fit: contain; padding: 14px; background: var(--surface); }
.certificate span { padding: 14px; font-size: 13px; font-weight: 750; }

.faq { background: var(--surface); }
.faq-grid { display: grid; grid-template-columns: .72fr 1.28fr; gap: 90px; align-items: start; }
.faq-intro { position: sticky; top: 120px; }
.faq-intro > p:not(.section-label) { color: var(--muted); }
.accordion { border-top: 1px solid #cfd8de; }
.accordion details { border-bottom: 1px solid #cfd8de; }
.accordion summary { display: flex; justify-content: space-between; gap: 20px; align-items: center; padding: 24px 0; font-weight: 750; cursor: pointer; list-style: none; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary svg { flex: 0 0 19px; transition: transform .25s ease; }
.accordion details[open] summary svg { transform: rotate(45deg); color: var(--orange); }
.accordion details p { margin: -6px 40px 22px 0; color: var(--muted); font-size: 14px; }

.contact { background: var(--blue-deep); color: #fff; }
.contact-grid { display: grid; grid-template-columns: .78fr 1.22fr; gap: 90px; }
.contact-copy .section-label { color: #7fc2ff; }
.contact-copy > p:not(.section-label) { color: rgba(255,255,255,.66); }
.contact-list { display: grid; gap: 18px; margin-top: 44px; }
.contact-list a, .contact-list > div { display: grid; grid-template-columns: 42px 1fr; gap: 14px; align-items: start; }
.contact-list svg { width: 21px; margin-top: 6px; color: var(--orange); }
.contact-list span { font-size: 14px; }
.contact-list small { display: block; color: rgba(255,255,255,.5); font-size: 11px; text-transform: uppercase; }
.quote-form { display: grid; gap: 18px; padding: 44px; background: #fff; color: var(--ink); box-shadow: 0 30px 70px rgba(0,0,0,.25); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.quote-form label { display: grid; gap: 7px; font-size: 12px; font-weight: 750; }
.quote-form input, .quote-form select, .quote-form textarea { width: 100%; border: 1px solid #cfd8de; border-radius: 0; background: #fff; color: var(--ink); outline: 0; padding: 13px 14px; font-size: 14px; }
.quote-form input:focus, .quote-form select:focus, .quote-form textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11,92,171,.1); }
.quote-form .is-invalid { border-color: #c73a3a; }
.consent { grid-template-columns: 18px 1fr !important; align-items: start; font-weight: 500 !important; color: var(--muted); }
.consent input { width: 16px; height: 16px; margin-top: 2px; padding: 0; }
.form-submit { width: 100%; border: 0; }
.form-note { margin: -6px 0 0; color: var(--muted); font-size: 11px; text-align: center; }

.site-footer { padding: 78px 0 24px; background: #0b1823; color: #fff; }
.footer-grid { display: grid; grid-template-columns: 1.45fr repeat(3,1fr); gap: 56px; }
.footer-brand img { width: 160px; height: auto; filter: brightness(0) invert(1); }
.footer-brand p { max-width: 280px; color: rgba(255,255,255,.55); font-size: 13px; }
.footer-grid h3 { margin: 0 0 16px; font-size: 13px; }
.footer-grid > div:not(.footer-brand) a { display: block; margin: 10px 0; color: rgba(255,255,255,.58); font-size: 13px; }
.footer-grid a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 60px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); color: rgba(255,255,255,.42); font-size: 11px; }
.whatsapp-float { position: fixed; z-index: 90; right: 22px; bottom: 22px; min-height: 50px; display: flex; align-items: center; gap: 9px; padding: 0 17px; background: #1fa463; color: #fff; box-shadow: 0 12px 30px rgba(8,53,34,.3); font-size: 13px; font-weight: 750; }
.whatsapp-float svg { width: 21px; }
.lightbox { width: min(860px, calc(100% - 40px)); padding: 0; border: 0; background: #fff; box-shadow: 0 30px 80px rgba(0,0,0,.4); }
.lightbox::backdrop { background: rgba(6,20,31,.78); backdrop-filter: blur(4px); }
.lightbox img { width: 100%; max-height: 84vh; object-fit: contain; }
.lightbox button { position: absolute; top: 10px; right: 10px; width: 42px; height: 42px; display: grid; place-items: center; border: 0; background: #fff; box-shadow: 0 6px 18px rgba(0,0,0,.15); cursor: pointer; }

@media (max-width: 1024px) {
  :root { --container: min(100% - 40px, 920px); }
  .desktop-nav { gap: 18px; }
  .header-cta { display: none; }
  .hero { min-height: 700px; }
  .hero-content { left: 40px; }
  .hero-content h1, .hero-content h2 { font-size: 58px; }
  .product-hero-bg img, .ring-hero img { opacity: .72; right: -8vw; }
  .split-heading { gap: 44px; }
  .part-feature { grid-template-columns: .9fr 1.1fr; }
  .quality-strip { grid-template-columns: 1fr 1fr; }
  .quality-strip > div:nth-child(2) { border-right: 0; }
  .quality-strip > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .model-panel { grid-template-columns: 1fr; }
  .model-gallery { min-height: 520px; }
  .model-copy { padding: 48px; }
  .capability-grid { grid-template-columns: .9fr 1.1fr; }
  .capability-copy { padding-left: 46px; }
  .capability-stats div { grid-template-columns: 1fr; gap: 2px; }
  .about-grid { gap: 50px; }
  .faq-grid, .contact-grid { gap: 50px; }
  .footer-grid { grid-template-columns: 1.3fr repeat(3,1fr); gap: 30px; }
}

@media (max-width: 760px) {
  :root { --container: calc(100% - 32px); --header: 68px; }
  .section { padding: 78px 0; }
  .site-header { height: var(--header); }
  .brand img { width: 132px; height: 44px; }
  .desktop-nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .mobile-nav { position: absolute; top: 68px; left: 0; right: 0; display: grid; max-height: 0; overflow: hidden; background: #fff; color: var(--ink); box-shadow: 0 18px 30px rgba(15,39,62,.12); transition: max-height .3s ease; }
  .site-header.menu-open .mobile-nav { max-height: 480px; }
  .mobile-nav a { padding: 13px 24px; border-top: 1px solid var(--line); font-size: 14px; font-weight: 700; }
  .hero { min-height: 720px; height: 94svh; max-height: 790px; }
  .hero-shade { background: linear-gradient(0deg, rgba(6,28,48,.92) 0%, rgba(6,28,48,.5) 63%, rgba(6,28,48,.22)); }
  .hero-slide > img { object-position: 62% center; }
  .hero-content { left: 20px; right: 20px; top: auto; bottom: 126px; width: auto; transform: none; }
  .hero-content h1, .hero-content h2 { margin-bottom: 18px; font-size: 43px; line-height: 1.05; }
  .hero-content p { margin-bottom: 24px; font-size: 15px; line-height: 1.6; }
  .product-hero-bg, .ring-hero { background: linear-gradient(160deg,#fff 0 55%,#dbe9f4 55%); }
  .product-hero-bg img, .ring-hero img { width: 92vw; right: -15vw; top: 29%; opacity: .62; }
  .hero-content-dark { padding: 18px; background: rgba(255,255,255,.82); backdrop-filter: blur(6px); }
  .hero-content-dark p { color: #4a5762; }
  .hero-controls { right: 16px; bottom: 75px; }
  .hero-proof { height: 54px; justify-content: flex-start; overflow: hidden; }
  .hero-proof span { flex: 0 0 auto; padding: 0 16px; font-size: 10px; }
  .split-heading, .credential-intro { grid-template-columns: 1fr; gap: 22px; }
  .section-heading { margin-bottom: 36px; }
  .section-heading h2, .capability-copy h2, .about-copy h2, .faq-intro h2, .contact-copy h2 { font-size: 38px; }
  .parts-showcase { grid-template-columns: 1fr; grid-template-rows: auto; }
  .part-feature, .part-feature-large { grid-row: auto; display: grid; grid-template-columns: 42% 58%; min-height: 250px; }
  .part-feature-large .part-image { height: auto; }
  .part-copy { padding: 24px 20px; }
  .part-copy h3 { font-size: 20px; }
  .quality-strip { grid-template-columns: 1fr; }
  .quality-strip > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .quality-strip > div:nth-child(2) { border-right: 0; }
  .model-tabs { width: 100%; }
  .model-tabs button { flex: 1; min-width: 0; }
  .model-gallery { min-height: 390px; }
  .model-gallery .model-main { min-height: 250px; }
  .model-copy { padding: 32px 24px; }
  .model-copy dl div { grid-template-columns: 1fr; gap: 3px; }
  .material-grid { grid-template-columns: 1fr 1fr; }
  .material-grid article { min-height: 190px; padding: 24px; }
  .material-grid article:nth-child(3n) { border-right: 1px solid rgba(255,255,255,.14); }
  .material-grid article:nth-child(2n) { border-right: 0; }
  .material-grid article:nth-last-child(-n+3) { border-bottom: 1px solid rgba(255,255,255,.14); }
  .material-grid article:nth-last-child(-n+2) { border-bottom: 0; }
  .material-grid h3 { margin-top: 35px; }
  .capability-grid, .about-grid, .faq-grid, .contact-grid { grid-template-columns: 1fr; }
  .capability-media { min-height: 470px; }
  .capability-copy { padding: 42px 0 0; }
  .capability-stats { grid-template-columns: 1fr; margin-top: 60px; }
  .capability-stats div { grid-template-columns: 90px 1fr; min-height: 104px; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.18); }
  .case-rail { grid-template-columns: 82vw 82vw 82vw; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: 18px; }
  .case-rail article { scroll-snap-align: start; }
  .about-grid { gap: 38px; }
  .about-media { order: -1; margin-left: 24px; }
  .history-mark { left: -24px; bottom: -24px; width: 120px; height: 120px; }
  .history-mark strong { font-size: 32px; }
  .credentials { margin-top: 90px; padding-bottom: 78px; }
  .certificate-grid { grid-template-columns: 1fr 1fr; }
  .faq-intro { position: static; }
  .quote-form { padding: 28px 20px; }
  .field-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
  .whatsapp-float { right: 14px; bottom: 14px; width: 50px; padding: 0; justify-content: center; }
  .whatsapp-float span { display: none; }
}

@media (max-width: 420px) {
  .hero-content h1, .hero-content h2 { font-size: 37px; }
  .hero-actions .btn { width: 100%; }
  .hero-controls > button { display: none; }
  .part-feature, .part-feature-large { grid-template-columns: 1fr; }
  .part-image { aspect-ratio: 16 / 10; }
  .material-grid { grid-template-columns: 1fr; }
  .material-grid article, .material-grid article:nth-child(3n), .material-grid article:nth-child(2n), .material-grid article:nth-last-child(-n+2) { border-right: 0; border-bottom: 1px solid rgba(255,255,255,.14); }
  .material-grid article:last-child { border-bottom: 0; }
  .certificate-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; }
}