:root {
  --black: #080a0c;
  --graphite: #12161a;
  --graphite-2: #1c2228;
  --white: #fff;
  --ink: #111418;
  --muted: #656b71;
  --line: #d8dce0;
  --blue: #0b438f;
  --lime: #b7ff32;
  --shell: min(1280px, calc(100% - 64px));
  --header-h: 80px;
  --ease: 180ms ease;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Arial, Helvetica, sans-serif; font-size: 16px; line-height: 1.5; text-rendering: optimizeLegibility; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--lime); outline-offset: 3px; }
.shell { width: var(--shell); margin-inline: auto; }
.skip-link { position: fixed; z-index: 1000; top: 12px; left: 12px; padding: 10px 14px; background: var(--lime); color: var(--black); transform: translateY(-150%); }
.skip-link:focus { transform: none; }

.site-header { position: absolute; z-index: 100; top: 0; left: 0; width: 100%; height: var(--header-h); color: var(--white); background: rgba(8, 10, 12, .9); border-bottom: 1px solid rgba(255,255,255,.12); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 32px; }
.brand { display: block; width: 111px; height: 68px; flex: 0 0 auto; }
.brand img { width: 100%; height: 100%; object-fit: contain; }
.site-nav { display: flex; align-items: center; gap: 34px; font-weight: 700; }
.site-nav > a:not(.button) { position: relative; padding: 10px 0; }
.site-nav > a:not(.button)::after { content: ""; position: absolute; right: 0; bottom: 4px; left: 0; height: 2px; background: var(--lime); transform: scaleX(0); transform-origin: left; transition: transform var(--ease); }
.site-nav > a:hover::after, .site-nav > a:focus-visible::after { transform: scaleX(1); }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 11px 8px; background: transparent; color: var(--white); border: 0; }
.menu-toggle span { display: block; width: 100%; height: 2px; margin: 5px 0; background: currentColor; }

.button { display: inline-flex; min-height: 54px; padding: 15px 24px; align-items: center; justify-content: center; gap: 12px; border: 1px solid var(--lime); background: var(--lime); color: var(--black); font-weight: 800; line-height: 1; cursor: pointer; transition: background var(--ease), color var(--ease), border-color var(--ease); }
.button:hover, .button:focus-visible { background: var(--white); border-color: var(--white); }
.button-small { min-height: 46px; padding: 12px 20px; }
.button-outline { color: var(--white); background: rgba(0,0,0,.18); border-color: rgba(255,255,255,.8); }
.button-outline:hover, .button-outline:focus-visible { color: var(--black); }

.hero { position: relative; min-height: 750px; display: grid; place-items: center; color: var(--white); background: var(--black); overflow: hidden; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(4,8,14,.75) 0%, rgba(4,8,14,.45) 35%, rgba(4,8,14,.05) 67%, transparent 100%); pointer-events: none; }
.hero-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center 50%; }
.hero-content { position: relative; z-index: 2; padding-top: var(--header-h); }
.hero h1 { max-width: 820px; margin: 0 0 22px; font-size: clamp(52px, 6vw, 92px); line-height: .96; letter-spacing: -.055em; }
.hero p { max-width: 700px; margin: 0 0 34px; color: rgba(255,255,255,.9); font-size: clamp(18px, 1.7vw, 23px); line-height: 1.45; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; }

.section { padding: 112px 0; }
.section-heading { margin-bottom: 48px; }
.section-heading h2 { margin: 0; font-size: clamp(42px, 5vw, 70px); line-height: .98; letter-spacing: -.045em; }
.section-heading p { max-width: 560px; margin: 16px 0 0; color: var(--muted); font-size: 18px; }
.line-heading { display: grid; grid-template-columns: auto 1fr minmax(260px, 410px); gap: 30px; align-items: center; }
.line-heading::before { content: ""; grid-column: 2; height: 1px; background: var(--line); }
.line-heading p { grid-column: 3; margin: 0; }
.split-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 480px); gap: 56px; align-items: end; }
.split-heading p { margin: 0; }

.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card { min-width: 0; }
.media-frame { aspect-ratio: 4 / 3; margin-bottom: 25px; overflow: hidden; background: #dce2e8; }
.media-frame img { width: 100%; height: 100%; object-fit: cover; transition: transform 350ms ease; }
.product-card:hover img { transform: scale(1.025); }
.product-card h3 { margin: 0 0 12px; font-size: clamp(24px, 2.1vw, 34px); line-height: 1.05; letter-spacing: -.03em; }
.product-card p { min-height: 72px; margin: 0 0 20px; color: var(--muted); }
.text-link { display: inline-flex; gap: 9px; align-items: center; padding-bottom: 4px; border-bottom: 2px solid var(--ink); font-weight: 800; }
.text-link span { transition: transform var(--ease); }
.text-link:hover span { transform: translateX(5px); }

.benefits { padding-top: 36px; }
.benefit-list { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.benefit-list article { min-height: 280px; padding: 28px 24px 32px; border-right: 1px solid var(--line); }
.benefit-list article:first-child { padding-left: 0; }
.benefit-list article:last-child { padding-right: 0; border-right: 0; }
.index { display: block; margin-bottom: 66px; color: var(--blue); font-weight: 800; }
.benefit-list h3 { margin: 0 0 12px; font-size: 25px; letter-spacing: -.025em; }
.benefit-list p { margin: 0; color: var(--muted); }

.specifications { color: var(--white); background: var(--graphite); }
.specifications .section-heading p { color: #aeb6bd; }
.specs-heading { display: flex; align-items: end; justify-content: space-between; gap: 32px; }
.specs-heading p { margin: 0; }
.spec-layout { display: grid; grid-template-columns: 1.15fr .85fr; gap: 50px; align-items: stretch; }
.spec-layout > img { width: 100%; height: 100%; min-height: 520px; object-fit: cover; }
.spec-list { margin: 0; }
.spec-list > div { min-height: 84px; display: grid; grid-template-columns: 160px 1fr; gap: 24px; align-items: center; border-top: 1px solid #596067; }
.spec-list > div:last-child { border-bottom: 1px solid #596067; }
.spec-list dt { color: #aeb6bd; }
.spec-list dd { margin: 0; font-size: clamp(20px, 2vw, 30px); font-weight: 800; line-height: 1.1; letter-spacing: -.025em; }

.project-grid { display: grid; grid-template-columns: 1.25fr .75fr; grid-template-rows: repeat(2, 280px); gap: 16px; }
.project-grid figure { position: relative; min-height: 0; margin: 0; overflow: hidden; background: #dce2e8; }
.project-grid .project-main { grid-row: 1 / 3; }
.project-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform 400ms ease; }
.project-grid figure:hover img { transform: scale(1.02); }

.factory { padding-top: 44px; }
.factory-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; margin: 0; padding: 0; list-style: none; }
.factory-steps img { width: 100%; height: 330px; object-fit: cover; background: #dce2e8; }
.factory-steps li:nth-child(2) img { object-position: 64% center; }
.factory-steps span { display: flex; gap: 10px; padding-top: 14px; font-weight: 700; }
.factory-steps b { color: var(--blue); }

.faq { background: #f3f4f5; }
.faq-layout { display: grid; grid-template-columns: .78fr 1.22fr; gap: 80px; align-items: start; }
.accordion { border-top: 1px solid #9fa5aa; }
.accordion details { border-bottom: 1px solid #b9bec2; }
.accordion summary { position: relative; padding: 26px 52px 26px 0; list-style: none; cursor: pointer; font-size: clamp(20px, 2vw, 27px); font-weight: 800; letter-spacing: -.02em; }
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::before, .accordion summary::after { content: ""; position: absolute; top: 50%; right: 10px; width: 18px; height: 2px; background: var(--ink); transition: transform var(--ease); }
.accordion summary::after { transform: rotate(90deg); }
.accordion details[open] summary::after { transform: rotate(0); }
.accordion details p { max-width: 720px; margin: -5px 48px 26px 0; color: var(--muted); }

.contact { color: var(--white); background: var(--graphite); }
.contact-layout { display: grid; grid-template-columns: minmax(0, 1fr) minmax(440px, .82fr); gap: clamp(64px, 9vw, 140px); align-items: center; }
.contact h2 { margin: 0 0 26px; font-size: clamp(52px, 5.7vw, 82px); line-height: .94; letter-spacing: -.05em; }
.contact-copy > p { max-width: 610px; margin: 0 0 48px; color: #b9c0c6; font-size: 19px; }
.contact-points { margin: 0; padding: 0; border-top: 1px solid #40474d; list-style: none; }
.contact-points li { display: grid; grid-template-columns: 44px 1fr; gap: 16px; padding: 18px 0; align-items: center; border-bottom: 1px solid #40474d; font-weight: 700; }
.contact-points span { color: var(--lime); font-size: 13px; }
.whatsapp-panel { padding: 28px; color: var(--ink); background: var(--white); }
.whatsapp-identity { display: grid; grid-template-columns: 190px minmax(0, 1fr); gap: 28px; align-items: center; }
.whatsapp-identity img { display: block; width: 190px; max-width: 190px; height: 190px; object-fit: contain; background: var(--white); }
.whatsapp-identity div { min-width: 0; display: grid; gap: 5px; }
.whatsapp-identity small { color: var(--muted); text-transform: uppercase; letter-spacing: .1em; font-weight: 800; }
.whatsapp-identity strong { font-size: 38px; line-height: 1; letter-spacing: -.03em; }
.whatsapp-identity .phone-link { width: fit-content; color: var(--blue); font-size: 20px; font-weight: 800; }
.whatsapp-identity .phone-link:hover { text-decoration: underline; }
.whatsapp-identity p { margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.whatsapp-cta { width: 100%; margin-top: 28px; }

.site-footer { color: var(--white); background: var(--black); }
.footer-main { min-height: 230px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: center; }
.footer-brand { width: 164px; height: 100px; }
.footer-main > div { display: grid; gap: 8px; }
.footer-main strong { max-width: 480px; margin-bottom: 8px; font-size: 18px; }
.footer-main a { width: fit-content; color: #b9c0c6; }
.footer-main a:hover { color: var(--lime); }
.footer-bottom { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 28px; color: #8f979e; border-top: 1px solid #33383d; font-size: 13px; }
.footer-bottom a { color: var(--white); }

.whatsapp-float { position: fixed; z-index: 90; right: 24px; bottom: 24px; width: 60px; height: 60px; display: grid; place-items: center; color: var(--black); background: var(--lime); border: 2px solid var(--black); border-radius: 50%; box-shadow: 0 10px 35px rgba(0,0,0,.22); transition: transform var(--ease), opacity var(--ease); }
.whatsapp-float:hover, .whatsapp-float:focus-visible { transform: translateY(-4px); }
.whatsapp-float.is-obscured { opacity: 0; pointer-events: none; transform: translateY(12px); }
.whatsapp-float svg { width: 31px; fill: currentColor; }

@media (max-width: 980px) {
  :root { --shell: min(100% - 40px, 900px); }
  .site-nav { gap: 22px; }
  .hero { min-height: 690px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .product-card:last-child { grid-column: 1 / -1; max-width: calc(50% - 12px); }
  .benefit-list { grid-template-columns: repeat(2, 1fr); }
  .benefit-list article:nth-child(2) { border-right: 0; }
  .benefit-list article:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .benefit-list article:first-child, .benefit-list article:nth-child(3) { padding-left: 0; }
  .spec-layout { grid-template-columns: 1fr; }
  .spec-layout > img { min-height: 430px; }
  .factory-steps { grid-template-columns: repeat(3, 1fr); }
  .faq-layout, .contact-layout { gap: 50px; }
  .contact-layout { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  :root { --shell: calc(100% - 32px); --header-h: 68px; }
  .site-header { position: absolute; }
  .brand { width: 98px; height: 60px; }
  .menu-toggle { display: block; }
  .site-nav { position: absolute; top: var(--header-h); right: 0; left: 0; display: none; padding: 14px 16px 20px; align-items: stretch; gap: 0; background: var(--black); border-top: 1px solid #2c3135; }
  .site-nav.is-open { display: grid; }
  .site-nav > a:not(.button) { padding: 15px 0; border-bottom: 1px solid #2c3135; }
  .site-nav .button { margin-top: 14px; }
  .hero { min-height: 720px; align-items: end; }
  .hero::after { background: linear-gradient(0deg, rgba(4,8,14,.92) 0%, rgba(4,8,14,.65) 48%, rgba(4,8,14,.08) 83%); }
  .hero-image { object-position: 58% center; }
  .hero-content { padding-top: 190px; padding-bottom: 48px; }
  .hero h1 { margin-bottom: 18px; font-size: clamp(45px, 14vw, 65px); }
  .hero p { margin-bottom: 26px; font-size: 17px; }
  .hero-actions { display: grid; }
  .hero-actions .button { width: 100%; }
  .section { padding: 76px 0; }
  .section-heading { margin-bottom: 32px; }
  .section-heading h2 { font-size: 44px; }
  .section-heading p { font-size: 16px; }
  .line-heading, .split-heading, .specs-heading { display: block; }
  .line-heading::before { display: none; }
  .line-heading p, .split-heading p, .specs-heading p { margin-top: 14px; }
  .product-grid { grid-template-columns: 1fr; gap: 52px; }
  .product-card:last-child { grid-column: auto; max-width: none; }
  .product-card p { min-height: 0; }
  .benefits { padding-top: 12px; }
  .benefit-list { grid-template-columns: 1fr; }
  .benefit-list article { min-height: auto; padding: 24px 0 !important; border-right: 0; border-bottom: 1px solid var(--line); }
  .benefit-list article:last-child { border-bottom: 0; }
  .index { margin-bottom: 32px; }
  .spec-layout { gap: 30px; }
  .spec-layout > img { min-height: 260px; }
  .spec-list > div { grid-template-columns: 112px 1fr; gap: 18px; min-height: 76px; }
  .spec-list dt { font-size: 13px; }
  .spec-list dd { font-size: 21px; }
  .project-grid { display: grid; grid-template-columns: 1fr; grid-template-rows: 360px 220px 220px; }
  .project-grid .project-main { grid-row: auto; }
  .factory { padding-top: 10px; }
  .factory-steps { display: flex; gap: 12px; margin-right: -16px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
  .factory-steps::-webkit-scrollbar { display: none; }
  .factory-steps li { flex: 0 0 76%; scroll-snap-align: start; }
  .factory-steps img { height: 360px; }
  .faq-layout { grid-template-columns: 1fr; gap: 12px; }
  .accordion summary { font-size: 19px; }
  .contact-layout { grid-template-columns: 1fr; gap: 44px; }
  .contact h2 { font-size: 52px; }
  .contact-copy > p { margin-bottom: 34px; }
  .whatsapp-panel { padding: 20px; }
  .whatsapp-identity { grid-template-columns: 116px minmax(0, 1fr); gap: 18px; }
  .whatsapp-identity img { width: 116px; max-width: 116px; height: 116px; }
  .whatsapp-identity strong { font-size: 30px; }
  .whatsapp-identity .phone-link { font-size: 17px; }
  .whatsapp-identity p { display: none; }
  .footer-main { grid-template-columns: 1fr; gap: 28px; padding: 52px 0; }
  .footer-brand { width: 144px; height: 88px; }
  .footer-bottom { min-height: 110px; align-items: flex-start; justify-content: center; flex-direction: column; }
  .whatsapp-float { right: 16px; bottom: 16px; width: 54px; height: 54px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}