:root{
  --ink:#171b21;
  --steel:#232a33;
  --slate:#3a4552;
  --fog:#9aa6b2;
  --line:#d4dae1;
  --paper:#eef1f4;
  --white:#ffffff;
  --ember:#ff6a2b;
  --ember-deep:#c2400e;
  --max:1200px;
  --font-display:"Big Shoulders Display",sans-serif;
  --font-body:"Archivo",sans-serif;
  --font-mono:"IBM Plex Mono",monospace;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--paper);color:var(--ink);line-height:1.6;font-size:16px}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--ember-deep);display:flex;align-items:center;gap:12px}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--ember)}
.dark .eyebrow{color:var(--ember)}
h1,h2,h3{font-family:var(--font-display);line-height:1.02;text-transform:uppercase;letter-spacing:.005em}
:focus-visible{outline:3px solid var(--ember);outline-offset:3px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:rgba(238,241,244,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:38px;height:38px;flex:none}
.brand-name{font-family:var(--font-display);font-weight:800;font-size:22px;text-transform:uppercase;letter-spacing:.03em}
.brand-name span{color:var(--ember-deep)}
.nav-links{display:flex;gap:30px;align-items:center}
.nav-links a{font-size:14px;font-weight:600;color:var(--slate);transition:color .2s}
.nav-links a:hover{color:var(--ember-deep)}
.lang-toggle{display:flex;border:1.5px solid var(--ink);font-family:var(--font-mono);font-size:12px;font-weight:500}
.lang-toggle button{border:none;background:transparent;padding:7px 13px;cursor:pointer;font:inherit;color:var(--ink);transition:.2s}
.lang-toggle button.active{background:var(--ink);color:var(--paper)}
.menu-btn{display:none;border:1.5px solid var(--ink);background:transparent;padding:8px 12px;font-family:var(--font-mono);font-size:12px;cursor:pointer}

/* ---------- hero ---------- */
.hero{background:var(--ink);color:var(--paper);position:relative;overflow:hidden}
.hero-inner{padding:110px 0 90px;position:relative;z-index:2}
.hero h1{font-size:clamp(52px,8.5vw,118px);font-weight:800;color:var(--white);max-width:14ch}
.hero h1 em{font-style:normal;color:var(--ember)}
.hero p{max-width:52ch;margin-top:28px;color:#c3ccd6;font-size:18px}
.hero-cta{margin-top:40px;display:flex;gap:16px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:10px;padding:15px 28px;font-weight:600;font-size:15px;border:1.5px solid transparent;transition:.2s;cursor:pointer}
.btn-primary{background:var(--ember);color:var(--ink)}
.btn-primary:hover{background:#ff8250}
.btn-ghost{border-color:#4a5563;color:var(--paper)}
.btn-ghost:hover{border-color:var(--ember);color:var(--ember)}
/* molten line — haddeden çıkan çelik */
.molten{position:relative;height:6px;background:linear-gradient(90deg,#3a1200,var(--ember-deep) 18%,var(--ember) 42%,#ffd6a0 50%,var(--ember) 58%,var(--ember-deep) 82%,#3a1200);background-size:200% 100%;animation:flow 6s linear infinite}
.molten::after{content:"";position:absolute;inset:-14px 0;background:inherit;filter:blur(18px);opacity:.55;background-size:200% 100%;animation:flow 6s linear infinite}
@keyframes flow{from{background-position:0 0}to{background-position:-200% 0}}
@media (prefers-reduced-motion:reduce){.molten,.molten::after{animation:none}}
.hero-grid{position:absolute;inset:0;opacity:.07;background-image:linear-gradient(#fff 1px,transparent 1px),linear-gradient(90deg,#fff 1px,transparent 1px);background-size:64px 64px;z-index:1}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid #313a45;position:relative;z-index:2}
.hero-stats div{padding:26px 20px;border-left:1px solid #313a45}
.hero-stats div:first-child{border-left:none;padding-left:0}
.hero-stats b{display:block;font-family:var(--font-display);font-size:40px;font-weight:700;color:var(--white);line-height:1}
.hero-stats span{font-family:var(--font-mono);font-size:12px;color:var(--fog);letter-spacing:.08em;text-transform:uppercase}

/* ---------- sections ---------- */
section{padding:96px 0}
.sec-head{display:flex;flex-direction:column;gap:16px;margin-bottom:56px;max-width:720px}
.sec-head h2{font-size:clamp(36px,5vw,60px);font-weight:700}
.sec-head p{color:var(--slate);font-size:17px}
.dark{background:var(--steel);color:var(--paper)}
.dark .sec-head p{color:#b9c3ce}
.dark .sec-head h2{color:var(--white)}

/* products */
.products{display:grid;grid-template-columns:repeat(3,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.product{background:var(--white);padding:34px 30px;display:flex;flex-direction:column;gap:16px;transition:.25s}
.product:hover{background:var(--ink);color:var(--paper)}
.product svg{width:64px;height:64px;stroke:var(--ink);transition:.25s}
.product:hover svg{stroke:var(--ember)}
.product h3{font-size:26px;font-weight:700}
.product p{font-size:14.5px;color:var(--slate);flex:1}
.product:hover p{color:#b9c3ce}
.product .spec{font-family:var(--font-mono);font-size:12px;color:var(--fog);letter-spacing:.04em;border-top:1px solid var(--line);padding-top:14px}
.product:hover .spec{border-color:#3c4652}

/* about */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:70px;align-items:start}
.about-grid p{margin-bottom:18px;color:#c3ccd6}
.value-list{display:flex;flex-direction:column;gap:0;border-top:1px solid #3c4652}
.value-list li{list-style:none;display:flex;gap:22px;padding:22px 0;border-bottom:1px solid #3c4652;align-items:baseline}
.value-list b{font-family:var(--font-display);font-size:22px;color:var(--ember);min-width:44px;font-weight:700}
.value-list h3{font-size:19px;color:var(--white);margin-bottom:4px}
.value-list span{font-size:14.5px;color:#b9c3ce}

/* markets */
.markets{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.market{border:1px solid var(--line);background:var(--white);padding:26px 24px}
.market h3{font-size:20px;margin-bottom:8px}
.market p{font-size:14px;color:var(--slate)}
.market .tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ember-deep);display:block;margin-bottom:12px}

/* quality strip */
.quality{background:var(--ink);color:var(--paper);padding:70px 0}
.quality-inner{display:flex;justify-content:space-between;align-items:center;gap:40px;flex-wrap:wrap}
.quality h2{font-size:clamp(28px,4vw,44px);color:var(--white);max-width:20ch}
.certs{display:flex;gap:14px;flex-wrap:wrap}
.cert{border:1px solid #3c4652;font-family:var(--font-mono);font-size:12.5px;letter-spacing:.08em;padding:12px 18px;color:#c3ccd6}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px}
.contact-info{display:flex;flex-direction:column;gap:26px}
.contact-info .item span{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--fog);display:block;margin-bottom:5px}
.contact-info .item a,.contact-info .item p{font-size:18px;font-weight:600;color:var(--ink)}
.contact-info .item a:hover{color:var(--ember-deep)}
form{display:flex;flex-direction:column;gap:16px}
.field label{font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate);display:block;margin-bottom:6px}
.field input,.field textarea{width:100%;border:1.5px solid var(--line);background:var(--white);padding:13px 15px;font:inherit;font-size:15px;transition:border-color .2s}
.field input:focus,.field textarea:focus{border-color:var(--ember);outline:none}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
form .btn{align-self:flex-start}

/* footer */
footer{background:var(--ink);color:var(--fog);padding:56px 0 32px}
.foot-grid{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap;margin-bottom:44px}
.foot-brand{max-width:320px}
.foot-brand .brand-name{color:var(--white)}
.foot-brand p{font-size:14px;margin-top:14px}
.foot-col h4{font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--white);margin-bottom:16px;font-weight:500}
.foot-col a{display:block;font-size:14.5px;padding:5px 0;transition:color .2s}
.foot-col a:hover{color:var(--ember)}
.foot-bottom{border-top:1px solid #313a45;padding-top:24px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-family:var(--font-mono);font-size:12px;letter-spacing:.04em}

/* responsive */
@media (max-width:920px){
  .products{grid-template-columns:1fr 1fr}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:44px}
  .markets{grid-template-columns:1fr 1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .hero-stats div{border-left:none;padding-left:0}
}
@media (max-width:680px){
  .nav-links{display:none;position:absolute;top:72px;left:0;right:0;background:var(--paper);flex-direction:column;padding:20px 24px;gap:18px;border-bottom:1px solid var(--line);align-items:flex-start}
  .nav-links.open{display:flex}
  .menu-btn{display:block}
  .products{grid-template-columns:1fr}
  .markets{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  section{padding:70px 0}
  .hero-inner{padding:76px 0 64px}
}

/* ---------- alt sayfa ortak ---------- */
.page-hero{background:var(--ink);color:var(--paper);padding:80px 0 60px;position:relative;overflow:hidden}
.page-hero h1{font-size:clamp(40px,6vw,76px);font-weight:800;color:var(--white);margin-top:18px}
.page-hero p{max-width:56ch;margin-top:18px;color:#c3ccd6;font-size:17px}
.breadcrumb{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--fog)}
.breadcrumb a:hover{color:var(--ember)}

/* ürün detay */
.p-detail{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;padding:70px 0;border-bottom:1px solid var(--line);align-items:start}
.p-detail:last-of-type{border-bottom:none}
.p-detail .p-head svg{width:80px;height:80px;stroke:var(--ink);margin-bottom:20px}
.p-detail h2{font-size:clamp(30px,4vw,46px);font-weight:700}
.p-detail .p-head p{color:var(--slate);margin-top:16px;font-size:16px}
.spec-table{width:100%;border-collapse:collapse;background:var(--white);border:1px solid var(--line)}
.spec-table th{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;text-align:left;color:var(--fog);padding:12px 16px;border-bottom:1px solid var(--line);font-weight:500;width:38%}
.spec-table td{padding:12px 16px;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink)}
.spec-table tr:last-child th,.spec-table tr:last-child td{border-bottom:none}
.p-cta{margin-top:22px}

/* iletişim harita */
.map-frame{width:100%;height:380px;border:1px solid var(--line);margin-top:60px}
.map-frame iframe{width:100%;height:100%;border:0;display:block;filter:grayscale(.35)}

/* zaman çizelgesi / süreç */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;counter-reset:step}
.step{border:1px solid var(--line);background:var(--white);padding:26px 24px;position:relative}
.step b{font-family:var(--font-display);font-size:34px;color:var(--ember);display:block;line-height:1;margin-bottom:12px;font-weight:700}
.step h3{font-size:18px;margin-bottom:6px}
.step p{font-size:14px;color:var(--slate)}

@media (max-width:920px){
  .p-detail{grid-template-columns:1fr;gap:30px}
  .steps{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .steps{grid-template-columns:1fr}
}