/*
  Renkler: açık zemin, antrasit metin, tek vurgu rengi (endüstriyel kırmızı).
  Gradyan, parlama ve animasyon kullanılmaz.
*/
:root{
  --white:#ffffff;
  --paper:#f4f5f6;
  --line:#dfe2e5;
  --ink:#1f252d;
  --ink2:#3d4651;
  --muted:#6b7480;
  --dark:#1f252d;
  --dark2:#171c22;
  --red:#b3282d;
  --red-d:#962126;
  --max:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-padding-top:90px}
body{font-family:"IBM Plex Sans",Arial,Helvetica,sans-serif;color:var(--ink);background:var(--white);line-height:1.65;font-size:16px}
h1,h2,h3{font-weight:700;line-height:1.2;color:var(--ink)}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
section{padding:80px 0}
.paper{background:var(--paper)}
.kicker{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--red);margin-bottom:10px}
h2{font-size:clamp(1.7rem,3.2vw,2.35rem);margin-bottom:14px}
.lead{color:var(--ink2);font-size:1.05rem;max-width:720px}
.btn{display:inline-block;padding:13px 26px;font-weight:600;font-size:.95rem;border:2px solid transparent;border-radius:3px;cursor:pointer;font-family:inherit}
.btn-red{background:var(--red);color:#fff}
.btn-red:hover{background:var(--red-d)}
.btn-line{border-color:#fff;color:#fff}
.btn-line:hover{background:#fff;color:var(--ink)}
.btn-dark{background:var(--ink);color:#fff}
.btn-dark:hover{background:#000}

/* foto yer tutucu: görsel yüklenmezse nötr gri kalır */
.ph{background:#c9ced3 center/cover no-repeat;position:relative;overflow:hidden}
.ph img{width:100%;height:100%;object-fit:cover}

/* üst bar */
.topbar{background:var(--dark2);color:#c4cad1;font-size:.84rem}
.topbar .wrap{display:flex;justify-content:space-between;gap:16px;padding-top:8px;padding-bottom:8px;flex-wrap:wrap}
.topbar a:hover{color:#fff}
.topbar span{margin-right:22px}

/* header */
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;height:78px}
.logo{display:flex;align-items:center;gap:12px}
.logo-box{width:44px;height:44px;background:var(--red);color:#fff;display:grid;place-items:center;font-weight:700;font-size:1.25rem;border-radius:2px}
.logo-name{font-weight:700;font-size:1.25rem;letter-spacing:.02em;line-height:1.1}
.logo-name small{display:block;font-weight:500;font-size:.72rem;letter-spacing:.06em;color:var(--muted)}
nav ul{display:flex;gap:30px;list-style:none}
nav a{font-weight:500;font-size:.95rem;color:var(--ink2)}
nav a:hover{color:var(--red)}
.nav-phone{display:flex;flex-direction:column;align-items:flex-end;line-height:1.2}
.nav-phone small{font-size:.75rem;color:var(--muted)}
.nav-phone a{font-weight:700;font-size:1.1rem;color:var(--red)}
.burger{display:none;background:none;border:0;cursor:pointer;color:var(--ink)}
.burger svg{width:30px;height:30px}

/* hero */
.hero{position:relative;color:#fff;min-height:560px;display:flex;align-items:center}
.hero .ph{position:absolute;inset:0;background-color:#2b3138}
.hero .ph::after{content:"";position:absolute;inset:0;background:rgba(18,22,27,.66)}
.hero .wrap{position:relative;z-index:1;padding-top:90px;padding-bottom:90px}
.hero h1{color:#fff;font-size:clamp(2.1rem,4.6vw,3.4rem);max-width:780px;margin-bottom:18px}
.hero p{font-size:1.15rem;max-width:640px;color:#e3e6ea;margin-bottom:30px}
.hero .btns{display:flex;gap:14px;flex-wrap:wrap}

/* özellik şeridi */
.features{border-bottom:1px solid var(--line)}
.features .wrap{display:grid;grid-template-columns:repeat(4,1fr)}
.feature{padding:28px 24px;border-right:1px solid var(--line)}
.feature:first-child{border-left:1px solid var(--line)}
.feature b{display:block;font-size:1.02rem;margin-bottom:4px}
.feature span{color:var(--muted);font-size:.9rem}

/* hizmet kartları */
.services{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;margin-top:40px}
.svc{background:#fff;border:1px solid var(--line)}
.svc .ph{height:210px}
.svc-body{padding:24px}
.svc h3{font-size:1.2rem;margin-bottom:8px}
.svc p{color:var(--ink2);font-size:.94rem}
.svc ul{margin-top:12px;padding-left:18px;color:var(--muted);font-size:.9rem}
.svc li{margin-bottom:3px}

/* güç elektroniği */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.split .ph{height:460px}
.checklist{list-style:none;margin-top:22px;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.checklist li{position:relative;padding-left:18px;font-size:.95rem;color:var(--ink2)}
.checklist li::before{content:"";position:absolute;left:0;top:.6em;width:8px;height:8px;background:var(--red)}
.power-list{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line);margin-top:56px;background:#fff}
.power-list div{padding:24px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}
.power-list h3{font-size:1.02rem;margin-bottom:6px}
.power-list p{font-size:.88rem;color:var(--muted)}

/* atölye galerisi */
.gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:240px 240px;gap:14px;margin-top:40px}
.gallery figure{position:relative}
.gallery figure.big{grid-row:span 2}
.gallery figure .ph{position:absolute;inset:0}
.gallery figcaption{position:absolute;left:0;right:0;bottom:0;background:rgba(23,28,34,.82);color:#fff;font-size:.88rem;padding:10px 14px;z-index:1}

/* süreç */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:40px;border:1px solid var(--line);background:#fff}
.step{padding:30px 26px;border-right:1px solid var(--line)}
.step:last-child{border-right:0}
.step .no{font-size:2rem;font-weight:700;color:var(--red);line-height:1;margin-bottom:12px}
.step h3{font-size:1.08rem;margin-bottom:6px}
.step p{font-size:.92rem;color:var(--ink2)}

/* neden biz - koyu bant */
.band{background:var(--dark);color:#d5dae0}
.band h2,.band h3{color:#fff}
.band .lead{color:#c4cad1}
.why{display:grid;grid-template-columns:repeat(4,1fr);gap:32px;margin-top:40px}
.why div{border-top:3px solid var(--red);padding-top:18px}
.why h3{font-size:1.08rem;margin-bottom:8px}
.why p{font-size:.92rem;color:#b9c0c8}

/* markalar */
.brands{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.brands span{border:1px solid var(--line);background:#fff;padding:10px 18px;font-weight:600;font-size:.9rem;color:var(--ink2)}

/* sss */
.faq{max-width:860px;margin-top:32px}
details{border-bottom:1px solid var(--line)}
details:first-child{border-top:1px solid var(--line)}
summary{cursor:pointer;list-style:none;padding:18px 36px 18px 0;font-weight:600;position:relative}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";position:absolute;right:4px;top:14px;font-size:1.4rem;color:var(--red);font-weight:500}
details[open] summary::after{content:"−"}
details p{padding:0 0 18px;color:var(--ink2);font-size:.95rem}

/* iletişim */
.contact{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.info{margin-top:26px;display:grid;gap:20px}
.info b{display:block;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);font-weight:600;margin-bottom:2px}
.info a{font-weight:600}
.info a:hover{color:var(--red)}
.form{background:#fff;border:1px solid var(--line);padding:30px}
.form h3{font-size:1.3rem;margin-bottom:4px}
.form > p{color:var(--muted);font-size:.92rem;margin-bottom:18px}
.field{display:block;margin-bottom:14px}
.field span{display:block;font-size:.85rem;font-weight:500;margin-bottom:5px;color:var(--ink2)}
.field input,.field select,.field textarea{width:100%;border:1px solid #c6cbd1;border-radius:2px;padding:11px 12px;font:inherit;font-size:.95rem;color:var(--ink);background:#fff}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--red);outline-offset:-1px;border-color:var(--red)}
.field textarea{min-height:100px;resize:vertical}
.form .btn{width:100%}
.form small{display:block;margin-top:10px;font-size:.8rem;color:var(--muted)}
.map{margin-top:48px;height:360px;border:1px solid var(--line);background:#e6e8ea}
.map iframe{width:100%;height:100%;border:0}

/* footer */
footer{background:var(--dark2);color:#aab2bb;font-size:.9rem}
.foot{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:40px;padding:56px 0 40px}
footer h4{color:#fff;font-size:.95rem;margin-bottom:14px}
footer ul{list-style:none;display:grid;gap:7px}
footer a:hover{color:#fff}
.copy{border-top:1px solid #2e353d;padding:18px 0;font-size:.82rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* sabit butonlar */
.fab{position:fixed;right:18px;bottom:18px;z-index:60;display:grid;gap:10px}
.fab a{width:52px;height:52px;border-radius:50%;display:grid;place-items:center;box-shadow:0 4px 12px rgba(0,0,0,.25)}
.fab svg{width:26px;height:26px}
.fab .wa{background:#25d366;color:#fff}
.fab .tel{background:var(--red);color:#fff}

@media (max-width:1020px){
  .services{grid-template-columns:1fr 1fr}
  .split,.contact{grid-template-columns:1fr}
  .split .ph{height:340px}
  .power-list,.why{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .step:nth-child(2){border-right:0}
  .step:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .features .wrap{grid-template-columns:1fr 1fr}
  .feature{border-bottom:1px solid var(--line)}
  .gallery{grid-template-columns:1fr 1fr;grid-template-rows:260px 200px 200px}
  .gallery figure.big{grid-column:span 2;grid-row:span 1}
  .foot{grid-template-columns:1fr 1fr}
  .nav-phone{display:none}
  .burger{display:block}
  nav{display:none;position:absolute;top:78px;left:0;right:0;background:#fff;border-bottom:1px solid var(--line)}
  nav.open{display:block}
  nav ul{flex-direction:column;gap:0;padding:6px 24px 14px}
  nav li a{display:block;padding:12px 0;border-bottom:1px solid var(--paper)}
}
@media (max-width:760px){
  section{padding:56px 0}
  .topbar .hide-m{display:none}
  .hero{min-height:480px}
  .services,.power-list,.why,.steps,.features .wrap,.foot{grid-template-columns:1fr}
  .checklist{grid-template-columns:1fr}
  .step{border-right:0;border-bottom:1px solid var(--line)}
  .step:last-child{border-bottom:0}
  .feature{border-left:1px solid var(--line)}
  .gallery{grid-template-columns:1fr;grid-template-rows:none;grid-auto-rows:220px}
  .gallery figure.big{grid-column:auto}
}

/* --- alt sayfalar ve yerel SEO bölümleri --- */
.crumb{font-size:.85rem;color:#c4cad1;margin-bottom:14px}
.crumb a{color:#fff;text-decoration:underline}
.hero .wrap{width:100%}
.logo img{display:block;height:50px;width:auto}
.foot-logo{display:block;height:44px;width:auto;margin-bottom:16px}
@media (max-width:760px){.logo img{height:40px}}@media (max-width:400px){.logo img{height:34px}}
.page-hero{min-height:380px}
.page-hero .wrap{padding-top:70px;padding-bottom:70px}
.content{display:grid;grid-template-columns:1.6fr 1fr;gap:48px;align-items:start}
.prose p{color:var(--ink2);margin-bottom:16px;font-size:1.02rem}
.prose h2{font-size:1.5rem;margin:30px 0 12px}
.prose ul{padding-left:20px;color:var(--ink2);margin-bottom:16px}
.prose li{margin-bottom:6px}
.side{background:var(--paper);border:1px solid var(--line);padding:26px;position:sticky;top:100px}
.side h3{font-size:1.15rem;margin-bottom:8px}
.side p{font-size:.92rem;color:var(--ink2);margin-bottom:16px}
.side .btn{display:block;text-align:center;margin-bottom:10px}
.side ul{list-style:none;margin-top:18px;border-top:1px solid var(--line);padding-top:14px}
.side li{margin-bottom:6px;font-size:.92rem}
.side li a:hover{color:var(--red)}
.more{display:inline-block;margin-top:14px;font-weight:600;color:var(--red);font-size:.92rem}
.more:hover{text-decoration:underline}
.areas{display:grid;grid-template-columns:1fr 1fr;gap:40px;margin-top:32px}
.areas h3{font-size:1.1rem;margin-bottom:12px}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags span{border:1px solid var(--line);background:#fff;padding:7px 14px;font-size:.88rem;color:var(--ink2)}
.legal h2{font-size:1.25rem;margin:28px 0 10px}
.legal p,.legal li{color:var(--ink2);margin-bottom:12px}
.legal ul{padding-left:20px}
@media (max-width:1020px){
  .content,.areas{grid-template-columns:1fr}
  .side{position:static}
}