:root{
  --navy:#0F172A; --navy-2:#1E293B; --slate:#334155; --muted:#475569; --subtle:#64748B;
  --cta:#0369A1; --cta-hover:#075985; --cta-tint:#E0F2FE;
  --bg:#F8FAFC; --surface:#FFFFFF; --line:#E2E8F0; --line-2:#CBD5E1;
  --warn:#92400E; --warn-bg:#FFFBEB; --warn-line:#F59E0B;
  --r:6px; --container:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--navy);font:17px/1.65 "Source Sans 3",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
.hero .container>*,.about>*,.contact>*,.section-head>*,.debag>*,.sector-grid>*,.products>*{min-width:0}
a{color:var(--cta);text-decoration:none}
a:hover{color:var(--cta-hover)}
h1,h2,h3,h4{font-family:Lexend,system-ui,sans-serif;line-height:1.2;margin:0;letter-spacing:-.01em;color:var(--navy)}
p{margin:0}
:focus-visible{outline:2px solid var(--cta);outline-offset:2px}
.container{max-width:var(--container);margin:0 auto;padding:0 24px}
.icon{width:20px;height:20px;flex-shrink:0;stroke:currentColor;fill:none;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round}
.icon-lg{width:28px;height:28px}

/* Topbar */
.topbar{background:var(--navy);color:#CBD5E1;font-size:14px}
.topbar .container{display:flex;justify-content:space-between;align-items:center;gap:20px;min-height:40px}
.topbar .group{display:flex;gap:24px;align-items:center}
.topbar a,.topbar span{color:#CBD5E1;display:inline-flex;align-items:center;gap:8px}
.topbar a:hover{color:#fff}
.topbar .icon{width:15px;height:15px}

/* Header */
.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.2) blur(6px)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px;gap:24px}
.brand{display:flex;align-items:center;gap:12px;color:var(--navy)}
.brand:hover{color:var(--navy)}
.brand-mark{width:40px;height:40px;background:var(--navy);color:#fff;display:grid;place-items:center;border-radius:4px;font:700 17px Lexend,sans-serif;letter-spacing:-.04em}
.brand-name{font:600 19px/1.1 Lexend,sans-serif;letter-spacing:.02em}
.brand-name small{display:block;font:500 12px "Source Sans 3",sans-serif;color:var(--subtle);letter-spacing:.06em;text-transform:uppercase;margin-top:3px}
.nav{display:flex;align-items:center;gap:4px}
.nav a{color:var(--slate);font-weight:600;font-size:15.5px;padding:10px 12px;border-radius:4px;transition:color .2s,background-color .2s}
.nav a:hover{color:var(--navy);background:var(--bg)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border-radius:var(--r);font:600 15.5px "Source Sans 3",sans-serif;cursor:pointer;border:1px solid transparent;transition:background-color .2s,border-color .2s,color .2s;white-space:nowrap}
.btn-primary{background:var(--cta);color:#fff}
.btn-primary:hover{background:var(--cta-hover);color:#fff}
.btn-outline{border-color:var(--line-2);color:var(--navy);background:var(--surface)}
.btn-outline:hover{border-color:var(--navy);color:var(--navy)}
.btn-light{background:#fff;color:var(--navy)}
.btn-light:hover{background:var(--cta-tint);color:var(--navy)}
.menu-toggle{display:none;background:none;border:1px solid var(--line);border-radius:var(--r);width:46px;height:46px;cursor:pointer;color:var(--navy);align-items:center;justify-content:center}

/* Hero */
.hero{background:var(--surface);border-bottom:1px solid var(--line)}
.hero .container{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center;padding-top:72px;padding-bottom:72px}
.kicker{display:inline-flex;align-items:center;gap:10px;font:600 13px Lexend,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--cta)}
.kicker::before{content:"";width:28px;height:2px;background:var(--cta)}
.hero h1{font-size:clamp(34px,4.4vw,54px);font-weight:600;margin:18px 0 20px}
.hero .lead{font-size:19px;color:var(--muted);max-width:560px}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.facts{display:grid;grid-template-columns:repeat(3,1fr);margin-top:44px;border-top:1px solid var(--line)}
.facts div{padding:18px 16px 0 0}
.facts div+div{padding-left:18px;border-left:1px solid var(--line)}
.facts strong{display:block;font:600 26px Lexend,sans-serif;color:var(--navy)}
.facts span{font-size:14.5px;color:var(--muted)}
.hero-media{position:relative}
.hero-media img{width:100%;height:auto;aspect-ratio:4/3.6;object-fit:cover;border-radius:var(--r)}
.hero-note{position:absolute;left:-28px;bottom:28px;background:var(--navy);color:#fff;padding:18px 22px;border-radius:var(--r);max-width:300px;display:flex;gap:14px;align-items:flex-start}
.hero-note .icon{color:#7DD3FC;margin-top:3px}
.hero-note strong{display:block;font:600 16px Lexend,sans-serif}
.hero-note span{font-size:14.5px;color:#CBD5E1}

/* Brand strip */
.brands-strip{background:var(--bg);border-bottom:1px solid var(--line)}
.brands-strip .container{display:grid;grid-template-columns:auto 1fr;gap:32px;align-items:center;padding-top:26px;padding-bottom:26px}
.brands-strip .label{font:600 12.5px Lexend,sans-serif;letter-spacing:.12em;text-transform:uppercase;color:var(--subtle);max-width:150px;line-height:1.5}
.brand-list{display:flex;flex-wrap:wrap;gap:12px 40px;align-items:center}
.brand-list span{font:600 19px Lexend,sans-serif;color:var(--slate);letter-spacing:.01em}
.brand-list span.dealer{color:var(--navy)}
.brand-list span.dealer::after{content:attr(data-dealer);display:block;font:600 11px "Source Sans 3",sans-serif;letter-spacing:.08em;text-transform:uppercase;color:var(--cta)}

/* Sections */
.section{padding:96px 0}
.section.tint{background:var(--surface);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:end;margin-bottom:48px}
.section-head h2{font-size:clamp(28px,3.2vw,40px);font-weight:600;margin-top:14px}
.section-head p{color:var(--muted);font-size:17.5px}
.section-head.single{grid-template-columns:1fr;max-width:760px}

/* About */
.about{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.about-text p{color:var(--muted);font-size:18px}
.about-text p+p{margin-top:16px}
.about-text h2{font-size:clamp(28px,3.2vw,40px);font-weight:600;margin:14px 0 22px}
.pillars{display:grid;grid-template-columns:1fr 1fr;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.pillar{padding:28px}
.pillar:nth-child(odd){border-right:1px solid var(--line)}
.pillar:nth-child(-n+2){border-bottom:1px solid var(--line)}
.pillar .icon{color:var(--cta);margin-bottom:16px}
.pillar h3{font-size:17.5px;font-weight:600;margin-bottom:8px}
.pillar p{color:var(--muted);font-size:15.5px}

/* Sectors */
.sector-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.sector{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:28px;display:flex;flex-direction:column;gap:12px;transition:border-color .2s}
.sector:hover{border-color:var(--line-2)}
.sector .icon{color:var(--cta)}
.sector h3{font-size:19px;font-weight:600}
.sector p{color:var(--muted);font-size:15.5px}
.sector ul{list-style:none;margin:6px 0 0;padding:14px 0 0;border-top:1px solid var(--line);display:grid;gap:6px;font-size:15px;color:var(--slate)}
.sector li{display:flex;gap:8px}
.sector li::before{content:"";width:5px;height:5px;background:var(--cta);margin-top:10px;flex-shrink:0}
.sector.featured{grid-column:span 3;display:grid;grid-template-columns:1fr 1.1fr;padding:0;overflow:hidden;background:var(--navy);border-color:var(--navy)}
.sector.featured img{width:100%;height:100%;object-fit:cover;min-height:300px}
.sector.featured .inner{padding:40px;display:flex;flex-direction:column;gap:14px;justify-content:center}
.sector.featured h3{color:#fff;font-size:26px}
.sector.featured p{color:#CBD5E1;font-size:17px}
.sector.featured .icon{color:#7DD3FC}
.sector.featured ul{border-top-color:rgba(255,255,255,.15);color:#E2E8F0;grid-template-columns:1fr 1fr}
.sector.featured li::before{background:#7DD3FC}
.sector.featured .btn{align-self:flex-start;margin-top:8px}

/* Process */
.process{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r);background:var(--surface);counter-reset:step}
.process li{list-style:none;padding:28px 26px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.process li:nth-child(4n){border-right:0}
.process li:nth-last-child(-n+4){border-bottom:0}
.process li::before{counter-increment:step;content:counter(step,decimal-leading-zero);font:600 14px Lexend,sans-serif;color:var(--cta);display:block;margin-bottom:14px}
.process h3{font-size:17px;font-weight:600;margin-bottom:8px}
.process p{color:var(--muted);font-size:15px}
.process .uses{margin-top:14px;padding-top:12px;border-top:1px dashed var(--line-2);font-size:14px;color:var(--slate)}
.process .uses b{display:block;font:600 11.5px Lexend,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--subtle);margin-bottom:4px}
.process-wrap{padding:0;margin:0}

/* Products */
.tabs{display:flex;gap:0;border-bottom:1px solid var(--line);margin-bottom:32px;overflow-x:auto;scrollbar-width:none}
.tabs::-webkit-scrollbar{display:none}
.tabs button{background:none;border:0;border-bottom:2px solid transparent;margin-bottom:-1px;padding:14px 18px;font:600 15.5px "Source Sans 3",sans-serif;color:var(--muted);cursor:pointer;white-space:nowrap;transition:color .2s,border-color .2s}
.tabs button:hover{color:var(--navy)}
.tabs button[aria-selected="true"]{color:var(--navy);border-bottom-color:var(--cta)}
.tabs .count{display:inline-block;margin-left:6px;font-size:13px;color:var(--subtle);font-weight:500}
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.product{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);display:flex;flex-direction:column;overflow:hidden;transition:border-color .2s}
.product:hover{border-color:var(--line-2)}
.product[hidden]{display:none}
.product-media{position:relative;aspect-ratio:16/10;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.product-media img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.product-media img.diagram{object-fit:contain;padding:22px}
.badge{position:absolute;top:12px;left:12px;background:var(--navy);color:#fff;font:600 11.5px Lexend,sans-serif;letter-spacing:.06em;text-transform:uppercase;padding:6px 10px;border-radius:3px}
.product-body{padding:22px 22px 18px;display:flex;flex-direction:column;gap:10px;flex:1}
.product-cat{font:600 12px Lexend,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--cta)}
.product h3{font-size:20px;font-weight:600}
.formula{font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:13.5px;color:var(--subtle);margin-top:-4px}
.product .desc{color:var(--muted);font-size:15.5px}
.makers{display:flex;flex-wrap:wrap;gap:6px}
.makers span{font-size:13px;font-weight:600;color:var(--slate);border:1px solid var(--line-2);padding:2px 8px;border-radius:3px}
.specs{margin:4px 0 0;border-top:1px solid var(--line);font-size:14.5px}
.specs div{display:grid;grid-template-columns:110px 1fr;gap:12px;padding:8px 0;border-bottom:1px solid var(--line)}
.specs dt{color:var(--subtle)}
.specs dd{margin:0;color:var(--navy);font-weight:500}
.more{margin-top:auto}
.more summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;padding:12px 0 2px;font-weight:600;font-size:15px;color:var(--cta)}
.more summary::-webkit-details-marker{display:none}
.more summary .icon{width:18px;height:18px;transition:transform .2s}
.more[open] summary .icon{transform:rotate(180deg)}
.more h4{font-size:13px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--slate);margin:14px 0 6px}
.more ul{margin:0;padding-left:18px;font-size:15px;color:var(--muted)}
.more li{margin:3px 0}
.caution{display:flex;gap:10px;margin-top:14px;font-size:14.5px;color:var(--warn);background:var(--warn-bg);border-left:3px solid var(--warn-line);padding:10px 12px;border-radius:0 4px 4px 0}
.caution .icon{width:18px;height:18px;margin-top:2px}
.note{margin-top:28px;color:var(--muted);font-size:15.5px}

/* Debağ */
.debag{display:grid;grid-template-columns:320px 1fr;gap:48px;align-items:start}
.debag-aside{position:sticky;top:100px}
.debag-aside h2{font-size:clamp(28px,3vw,36px);font-weight:600;margin:14px 0 16px}
.debag-aside p{color:var(--muted)}
.debag-aside .btn{margin-top:24px}
.acc{border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.acc details+details{border-top:1px solid var(--line)}
.acc summary{list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;font:600 17.5px Lexend,sans-serif;color:var(--navy);transition:background-color .2s}
.acc summary:hover{background:var(--bg)}
.acc summary::-webkit-details-marker{display:none}
.acc summary small{font:500 14px "Source Sans 3",sans-serif;color:var(--subtle);margin-left:auto}
.acc summary .icon{transition:transform .2s;color:var(--subtle)}
.acc details[open] summary .icon{transform:rotate(180deg)}
.acc table{width:100%;border-collapse:collapse;font-size:15px}
.acc td{padding:11px 24px;border-top:1px solid var(--line);vertical-align:top;color:var(--muted)}
.acc td:first-child{width:220px;font-weight:600;color:var(--navy);font-family:ui-monospace,"Cascadia Mono",Consolas,monospace;font-size:14px;white-space:nowrap}

/* Safety */
.safety-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.safety-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:30px}
.safety-card .icon{color:var(--cta);margin-bottom:14px}
.safety-card h3{font-size:19px;font-weight:600;margin-bottom:12px}
.safety-card ul{margin:0;padding-left:20px;color:var(--muted);display:grid;gap:6px}

/* CTA band */
.cta-band{background:var(--cta)}
.cta-band .container{display:flex;justify-content:space-between;align-items:center;gap:24px;padding-top:44px;padding-bottom:44px;flex-wrap:wrap}
.cta-band h2{color:#fff;font-size:clamp(22px,2.6vw,30px);font-weight:600}
.cta-band p{color:#E0F2FE;margin-top:6px}

/* Contact */
.contact{display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:stretch}
.contact-list{display:grid;gap:0;border:1px solid var(--line);border-radius:var(--r);background:var(--surface)}
.contact-item{display:flex;gap:16px;padding:22px 24px}
.contact-item+.contact-item{border-top:1px solid var(--line)}
.contact-item .icon{color:var(--cta);margin-top:3px}
.contact-item small{display:block;font:600 12px Lexend,sans-serif;letter-spacing:.1em;text-transform:uppercase;color:var(--subtle);margin-bottom:4px}
.contact-item b,.contact-item a{font-size:17px;font-weight:600;color:var(--navy)}
.contact-item a:hover{color:var(--cta)}
.contact-map{border:1px solid var(--line);border-radius:var(--r);overflow:hidden;min-height:380px;background:var(--line)}
.contact-map iframe{width:100%;height:100%;min-height:380px;border:0;display:block}
.contact-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:20px}

/* Footer */
.footer{background:var(--navy);color:#94A3B8;padding:64px 0 28px;font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}
.footer h4{color:#fff;font-size:14px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.footer a{color:#CBD5E1}
.footer a:hover{color:#fff}
.footer .brand-name{color:#fff}
.footer .about-f{margin-top:16px;max-width:320px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid #1E293B;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;font-size:13.5px}
.credits{margin-top:14px;font-size:12.5px;color:#64748B;line-height:1.7}
.credits a{color:#94A3B8}

@media (max-width:1080px){
  .products{grid-template-columns:repeat(2,1fr)}
  .process{grid-template-columns:repeat(2,1fr)}
  .process li:nth-child(4n){border-right:1px solid var(--line)}
  .process li:nth-child(2n){border-right:0}
  .process li:nth-last-child(-n+4){border-bottom:1px solid var(--line)}
  .process li:nth-last-child(-n+2){border-bottom:0}
  .sector-grid{grid-template-columns:repeat(2,1fr)}
  .sector.featured{grid-column:span 2}
  .footer-grid{grid-template-columns:1fr 1fr}
  .debag{grid-template-columns:1fr}
  .debag-aside{position:static}
}
@media (max-width:900px){
  .nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;padding:12px 24px 20px;border-bottom:1px solid var(--line)}
  .nav.open{display:flex}
  .nav a{padding:14px 8px;border-bottom:1px solid var(--line);border-radius:0}
  .menu-toggle{display:inline-flex}
  .header .btn-primary{display:none}
  .hero .container,.about,.contact,.section-head{grid-template-columns:1fr}
  .section-head{gap:16px}
  .hero-note{left:16px;bottom:16px}
  .topbar .hide-sm{display:none}
}
@media (max-width:640px){
  .container{padding:0 16px}
  .section{padding:64px 0}
  .hero .container{padding-top:44px;padding-bottom:48px;gap:36px}
  .products,.sector-grid,.safety-grid,.pillars,.process{grid-template-columns:1fr}
  .sector.featured{grid-column:auto;grid-template-columns:1fr}
  .sector.featured .inner{padding:28px 22px}
  .sector.featured ul{grid-template-columns:1fr}
  .pillar:nth-child(odd){border-right:0}
  .pillar:not(:last-child){border-bottom:1px solid var(--line)}
  .process li{border-right:0 !important;border-bottom:1px solid var(--line) !important}
  .process li:last-child{border-bottom:0 !important}
  .facts{grid-template-columns:1fr 1fr}
  .facts div:nth-child(3){grid-column:span 2;border-left:0;padding-left:0;border-top:1px solid var(--line);margin-top:18px}
  .brands-strip .container{grid-template-columns:1fr;gap:14px}
  .brand-list{gap:12px 28px}
  .acc td{display:block;padding:4px 18px}
  .acc td:first-child{width:auto;padding-top:12px}
  .acc tr td:last-child{padding-bottom:12px;border-top:0}
  .acc summary{padding:18px}
  .footer-grid{grid-template-columns:1fr}
  .topbar .group{gap:16px}
  .topbar .group+.group{display:none}
  .hero h1{font-size:32px}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important}
}

/* Dil seçici */
.lang{display:inline-flex;border:1px solid var(--line-2);border-radius:var(--r);overflow:hidden;font:600 13.5px Lexend,sans-serif}
.lang a,.lang span{display:inline-flex;align-items:center;justify-content:center;min-width:44px;min-height:44px;padding:0 10px;color:var(--muted)}
.lang a:hover{color:var(--navy);background:var(--bg)}
.lang span{background:var(--navy);color:#fff}
.header-actions{display:flex;align-items:center;gap:12px}
@media (max-width:900px){.header-actions .btn-primary{display:none}}