:root {
  --ink: #061621;
  --ink-2: #102b3c;
  --blue: #1676a4;
  --cyan: #55c5e8;
  --ice: #dff3f8;
  --paper: #f4f7f7;
  --white: #fff;
  --line: rgba(6, 22, 33, .16);
  --max: 1240px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Arial, Helvetica, sans-serif; font-size: 16px; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; }
button { font: inherit; }
.sr-only, .skip-link:not(:focus) { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip-link:focus { position: fixed; z-index: 999; top: 1rem; left: 1rem; padding: .75rem 1rem; background: white; color: var(--ink); }

.site-header { position: sticky; top: 0; z-index: 50; color: var(--ink); background: rgba(255, 255, 255, .96); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.header-inner { max-width: var(--max); min-height: 82px; margin: auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: flex; align-items: center; gap: 12px; }
.logo-plate { display: inline-flex; align-items: center; padding: 4px 9px; background: #fff; }
.brand-logo { display: block; width: 174px; height: auto; }
.brand-copy { display: flex; flex-direction: column; line-height: 1.2; }
.brand-copy small { color: #52656f; font-size: .66rem; letter-spacing: .08em; text-transform: uppercase; }
.primary-nav { display: flex; align-items: center; gap: 28px; font-size: .86rem; font-weight: 700; }
.primary-nav > a { color: #40545f; }
.primary-nav > a:hover { color: var(--blue); }
.menu-toggle { display: none; width: 45px; height: 42px; padding: 10px; border: 0; background: transparent; }
.menu-toggle > span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--ink); }

.hero { color: white; background: var(--ink); overflow: hidden; }
.hero-grid { min-height: 660px; max-width: var(--max); margin: auto; padding: 78px 24px 68px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 7vw; }
.eyebrow { margin: 0 0 22px; color: var(--blue); font-size: .72rem; font-weight: 800; letter-spacing: .16em; text-transform: uppercase; }
.eyebrow span { display: inline-block; width: 28px; height: 2px; margin: 0 9px 3px 0; background: currentColor; }
.eyebrow.light { color: var(--cyan); }
.hero h1, .section h2, .contact h2, .eu-project h2 { margin: 0; font-size: clamp(3.3rem, 7vw, 6.7rem); line-height: .9; letter-spacing: -.065em; }
.hero h1 { max-width: 760px; }
.hero h1 em, .contact h2 em { color: var(--cyan); font-style: normal; }
.hero-lead { max-width: 650px; margin: 34px 0; color: #b7c8d1; font-size: 1.12rem; line-height: 1.75; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
.button { display: inline-flex; min-height: 50px; align-items: center; justify-content: center; padding: 12px 22px; border: 1px solid rgba(255,255,255,.25); font-size: .82rem; font-weight: 800; letter-spacing: .02em; }
.button-primary { color: var(--ink); background: var(--cyan); border-color: var(--cyan); }
.button:hover { transform: translateY(-2px); }
.hero-visual { position: relative; min-height: 470px; display: grid; place-items: center; isolation: isolate; }
.hero-visual::before { content: ""; position: absolute; inset: 5% -30% -10% 10%; z-index: -2; background: radial-gradient(circle at 48% 48%, rgba(85,197,232,.35), transparent 45%); }
.hero-visual::after { content: ""; position: absolute; width: 520px; height: 520px; z-index: -3; border: 1px solid rgba(255,255,255,.12); border-radius: 50%; box-shadow: 0 0 0 70px rgba(255,255,255,.025), 0 0 0 140px rgba(255,255,255,.018); }
.hero-visual img { width: 245px; image-rendering: auto; filter: saturate(.75) contrast(1.08); box-shadow: 0 34px 80px rgba(0,0,0,.38); }
.metal-disc { position: absolute; width: 310px; height: 310px; border-radius: 50%; z-index: -1; background: radial-gradient(circle at 35% 25%, #e7fbff, #4d9cba 24%, #0d3449 61%, #071821 64% 70%, #5fc3de 72%, #07131b 74%); opacity: .75; transform: translate(100px,-65px); }
.visual-label { position: absolute; right: 4%; bottom: 6%; display: flex; align-items: center; gap: 12px; color: #b7c8d1; font-size: .78rem; text-transform: uppercase; letter-spacing: .12em; }
.visual-label span { display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(255,255,255,.3); border-radius: 50%; color: white; }
.milestones { max-width: var(--max); margin: auto; padding: 0 24px 46px; display: grid; grid-template-columns: repeat(4,1fr); border-top: 1px solid rgba(255,255,255,.15); }
.milestones div { padding: 30px 22px 0; display: flex; align-items: flex-start; gap: 15px; border-right: 1px solid rgba(255,255,255,.12); }
.milestones div:last-child { border-right: 0; }
.milestones strong { color: var(--cyan); font-size: 1.35rem; letter-spacing: -.04em; }
.milestones span { color: #93aab6; font-size: .7rem; line-height: 1.45; text-transform: uppercase; letter-spacing: .08em; }
.about-milestones { max-width: none; padding-right: max(24px, calc((100vw - var(--max)) / 2)); padding-left: max(24px, calc((100vw - var(--max)) / 2)); background: var(--ink); }

.section { position: relative; max-width: var(--max); margin: auto; padding: 120px 24px; }
.section h2 { font-size: clamp(2.6rem, 5vw, 5rem); }
.intro { min-height: clamp(650px, 52.5vw, 900px); max-width: none; padding-right: max(24px, calc((100vw - var(--max)) / 2)); padding-left: max(24px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: .7fr 1.3fr; gap: 7vw; align-items: stretch; color: white; background-image: url('firma-bez-aut.png'); background-position: center; background-size: cover; }
.intro-content { grid-column: 2; display: grid; align-content: center; gap: 28px; }
.intro-content > .section-heading { position: relative; z-index: 1; }
.intro h2 { color: white; text-shadow: 0 3px 24px rgba(0,0,0,.9); }
.intro .eyebrow { color: var(--cyan); }
.intro-copy { padding: 36px; display: grid; grid-template-columns: 1fr 1fr; gap: 34px; color: #fff; background: rgba(5,49,76,.38); border: 1px solid rgba(255,255,255,.3); border-radius: 18px; box-shadow: 0 18px 50px rgba(6,22,33,.16); text-shadow: 0 1px 12px rgba(0,0,0,.8); backdrop-filter: blur(2px); -webkit-backdrop-filter: blur(2px); }
.intro-copy p { margin: 0; }
.intro-copy p:first-child::first-letter { float: left; margin: 8px 8px 0 0; color: var(--cyan); font-size: 3.6rem; font-weight: 800; line-height: .72; }
.intro-copy .intro-lead { grid-column: 1 / -1; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.32); font-size: 1.06rem; font-weight: 700; }
.intro-slogan { grid-column: 1; grid-row: 1; align-self: end; margin: 0; color: white; font-size: clamp(3.2rem, 5.8vw, 6rem); line-height: .9; letter-spacing: -.065em; text-shadow: 0 3px 24px rgba(0,0,0,.9); }
.intro-slogan em { color: var(--cyan); font-style: normal; }

.services { padding-top: 30px; }
.service-heading { margin-bottom: 70px; display: grid; grid-template-columns: 1fr .6fr; align-items: end; gap: 7vw; }
.service-heading > p { max-width: 410px; margin: 0 0 6px; color: #52656f; }
.service-list { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.service-item { align-self: start; overflow: hidden; background: white; border: 1px solid var(--line); border-radius: 16px; box-shadow: 0 16px 45px rgba(6, 22, 33, .05); }
.service-item:nth-child(1) { --card-image: url('technologia-chromovanie.jpg'); }
.service-item:nth-child(2) { --card-image: url('technologia-medenie.jpg'); }
.service-item:nth-child(3) { --card-image: url('technologia-niklovanie.jpg'); }
.service-item:nth-child(4) { --card-image: url('technologia-zinkovanie.jpg'); }
.service-item:nth-child(5) { --card-image: url('technologia-cinovanie.jpg'); }
.service-item:nth-child(6) { --card-image: url('technologia-chromovanie-plastov.jpg'); }
.service-item summary { min-height: 190px; padding: 28px; display: grid; grid-template-columns: 1fr 34px; grid-template-rows: auto 1fr; align-items: start; gap: 16px; color: white; cursor: pointer; list-style: none; background-image: linear-gradient(135deg, rgba(6,22,33,.48), rgba(6,22,33,.08)), var(--card-image); background-size: cover; background-position: center; transition: background-size .35s; }
.service-item summary:hover { background-size: 104%; }
.service-item summary::-webkit-details-marker { display: none; }
.service-name { font-size: clamp(1.45rem, 2.5vw, 2.25rem); font-weight: 800; letter-spacing: -.045em; text-shadow: 0 2px 14px rgba(0,0,0,.85); }
.service-tags { grid-column: 1; align-self: end; color: white; font-size: .78rem; font-weight: 700; letter-spacing: .05em; text-transform: uppercase; text-shadow: 0 2px 10px rgba(0,0,0,.9); }
.service-plus { position: relative; width: 32px; height: 32px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; background: rgba(6,22,33,.28); }
.service-plus::before, .service-plus::after { content: ""; position: absolute; top: 50%; left: 50%; width: 12px; height: 1px; background: white; transform: translate(-50%,-50%); }
.service-plus::after { transform: translate(-50%,-50%) rotate(90deg); transition: transform .25s; }
.service-item[open] .service-plus { background: var(--ink); }
.service-item[open] .service-plus::before, .service-item[open] .service-plus::after { background: white; }
.service-item[open] .service-plus::after { transform: translate(-50%,-50%) rotate(0); }
.service-detail { padding: 0 28px 30px; display: block; animation: reveal .3s ease; }
.service-detail p { margin: 0 0 16px; color: #40545f; }
.service-detail dl { margin: 24px 0 0; }
.service-detail dl div { padding: 10px 0; display: grid; grid-template-columns: 1fr 1.4fr; gap: 14px; border-bottom: 1px solid var(--line); }
.service-detail dt { color: #61717a; font-size: .75rem; text-transform: uppercase; }
.service-detail dd { margin: 0; font-size: .84rem; font-weight: 800; }
@keyframes reveal { from { opacity: 0; transform: translateY(-8px); } }

.quality { max-width: none; padding: 100px max(24px, calc((100vw - var(--max)) / 2)); color: white; background: var(--blue); }
.quality-panel { display: grid; grid-template-columns: 1.05fr .95fr; align-items: end; gap: 8vw; }
.quality-copy p:not(.eyebrow) { max-width: 650px; color: #d6ecf4; }
.quality-copy h2 { margin-bottom: 34px; }
.certificates { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.certificate { min-height: 265px; padding: 28px; display: flex; flex-direction: column; justify-content: space-between; color: white; background: transparent; border: 1px solid rgba(255,255,255,.35); border-radius: 16px; transition: transform .2s, background .2s; }
.certificate:hover { transform: translateY(-5px); background: rgba(255,255,255,.08); }
.certificate img { width: 66px; }
.certificate span { display: flex; flex-direction: column; }
.certificate small { color: #d6ecf4; text-transform: uppercase; letter-spacing: .08em; }
.certificate strong { margin: 8px 0 16px; font-size: 1.22rem; line-height: 1.25; }
.certificate u { color: white; font-size: .77rem; font-weight: 800; text-decoration: underline; text-underline-offset: 4px; }

.contact { padding-top: 135px; padding-bottom: 135px; }
.contact-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 7vw; }
.contact h2 { font-size: clamp(3rem, 5.5vw, 5.7rem); }
.contact-intro { max-width: 480px; margin-top: 30px; color: #52656f; }
.contact-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-card { min-height: 170px; padding: 28px; display: flex; flex-direction: column; justify-content: space-between; background: white; border: 1px solid var(--line); border-radius: 16px; font-style: normal; transition: background .2s; }
a.contact-card:hover { background: var(--ice); }
.contact-card small { color: var(--blue); font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.contact-card strong { font-size: 1.13rem; }
.contact-card span { color: #63747c; font-size: .78rem; }

.eu-project { max-width: var(--max); margin: 0 auto 100px; padding: 60px 8%; display: flex; align-items: center; justify-content: center; gap: 8%; color: white; background: var(--ink-2); }
.eu-project img { width: 130px; height: auto; }
.eu-project h2 { font-size: clamp(2rem,4vw,4rem); }
.eu-project p:last-child { color: #b8cbd4; }

.site-footer { padding: 65px max(24px, calc((100vw - var(--max)) / 2)); display: grid; grid-template-columns: 1.7fr 1fr 1fr auto; gap: 50px; color: #afc1ca; background: var(--ink); }
.footer-brand { display: flex; align-items: flex-start; gap: 18px; }
.footer-brand .brand-logo { width: 162px; }
.footer-brand p { margin: 0; font-size: .78rem; line-height: 1.6; }
.site-footer > div:not(.footer-brand) { display: flex; flex-direction: column; gap: 7px; }
.site-footer small { margin-bottom: 8px; color: white; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }
.site-footer a { font-size: .8rem; }
.site-footer a:hover { color: var(--cyan); }
.copyright { align-self: end; margin: 0; font-size: .72rem; }

@media (max-width: 900px) {
  .menu-toggle { display: block; }
  .primary-nav { position: absolute; top: 82px; left: 0; right: 0; padding: 28px 24px; display: none; flex-direction: column; align-items: stretch; gap: 18px; background: white; border-top: 1px solid var(--line); box-shadow: 0 18px 38px rgba(6,22,33,.12); }
  .primary-nav.open { display: flex; }
  .hero-grid { grid-template-columns: 1fr; padding-top: 65px; }
  .hero-visual { min-height: 420px; }
  .milestones { grid-template-columns: 1fr 1fr; }
  .milestones div:nth-child(2) { border-right: 0; }
  .intro, .service-heading, .quality-panel, .contact-grid { grid-template-columns: 1fr; }
  .intro { min-height: 720px; background-image: url('firma-bez-aut.png'); background-position: 42% center; }
  .intro-content { grid-column: 1; }
  .intro-slogan { grid-column: 1; grid-row: auto; }
  .service-heading { align-items: start; }
  .service-detail { grid-template-columns: 1fr; gap: 20px; }
  .service-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 600px) {
  .header-inner { min-height: 72px; padding: 0 18px; }
  .brand-copy { display: none; }
  .brand-logo { width: 144px; }
  .logo-plate { padding: 3px 6px; }
  .primary-nav { top: 72px; }
  .hero-grid { min-height: auto; padding: 55px 18px 30px; gap: 28px; }
  .hero-lead { margin: 25px 0; font-size: 1rem; }
  .hero-visual { min-height: 360px; }
  .hero-visual::after { width: 360px; height: 360px; }
  .hero-visual img { width: 190px; }
  .metal-disc { width: 220px; height: 220px; transform: translate(70px,-45px); }
  .milestones { padding: 0 18px 28px; }
  .milestones div { padding: 20px 8px 0; flex-direction: column; gap: 5px; }
  .section { padding: 82px 18px; }
  .intro-copy { padding: 26px; }
  .intro-copy { grid-template-columns: 1fr; }
  .services { padding-top: 10px; }
  .service-heading { margin-bottom: 40px; }
  .service-list { grid-template-columns: 1fr; }
  .service-item summary { min-height: 138px; padding: 24px; grid-template-columns: 1fr 32px; gap: 12px; }
  .service-detail { padding: 0 24px 28px; }
  .service-detail dl div { grid-template-columns: 1fr; gap: 0; }
  .quality { padding-left: 18px; padding-right: 18px; }
  .certificates, .contact-cards { grid-template-columns: 1fr; }
  .certificate { min-height: 220px; }
  .eu-project { margin-bottom: 0; padding: 55px 28px; flex-direction: column; align-items: flex-start; }
  .eu-project img { margin-bottom: 25px; }
  .site-footer { grid-template-columns: 1fr 1fr; padding: 50px 18px; }
  .footer-brand, .copyright { grid-column: 1 / -1; }
}

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