:root{--navy:#063660;--navy2:#0b588e;--ink:#10263d;--muted:#66798c;--line:#d9e3eb;--paper:#f5f8fb;--white:#fff;--silver:#a5a7a9;--shadow:0 18px 55px rgba(8,35,61,.11)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Arial,sans-serif;color:var(--ink);line-height:1.55;background:#fff}a{text-decoration:none;color:inherit}.container{width:min(1180px,calc(100% - 40px));margin:auto}
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.95);backdrop-filter:blur(16px);border-bottom:1px solid var(--line)}.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between}.brand img{width:178px;display:block}.nav{display:flex;gap:24px;font-size:13px;font-weight:800;color:#29435b}.nav a{padding:10px 0}.menu-toggle{display:none;border:0;background:none;color:var(--navy);font-size:28px}
.hero{position:relative;overflow:hidden;background:#f8fafc}.hero-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(6,54,96,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(6,54,96,.045) 1px,transparent 1px);background-size:44px 44px;mask-image:linear-gradient(90deg,#000,transparent 90%)}.hero-inner{min-height:650px;display:grid;grid-template-columns:1fr .8fr;gap:40px;align-items:center;position:relative}.eyebrow{display:inline-block;font-size:11px;letter-spacing:.18em;font-weight:950;color:var(--navy2);margin-bottom:14px}.hero h1{font-size:clamp(48px,6vw,80px);line-height:1.02;letter-spacing:-.05em;margin:0 0 25px}.hero h1 span,.section h2 span{color:var(--navy2)}.hero p{font-size:18px;color:#566b80;max-width:650px}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin:30px 0}.btn{border-radius:12px;padding:14px 20px;border:1px solid transparent;font:inherit;font-weight:900;cursor:pointer;display:inline-flex;justify-content:center;align-items:center}.btn.primary{background:var(--navy);color:#fff;box-shadow:0 9px 24px rgba(6,54,96,.2)}.btn.ghost{background:#fff;color:var(--navy);border-color:#bdccd9}.hero-points{display:flex;gap:22px;flex-wrap:wrap;color:#65788a;font-size:12px}.hero-points b{color:var(--navy);margin-right:5px}.hero-art{height:420px;position:relative;border-left:1px solid #c6d5e1}.frame{position:absolute;left:12%;right:6%;top:17%;bottom:12%;transform:skewY(-8deg)}.col{position:absolute;bottom:0;width:12px;height:78%;background:linear-gradient(90deg,#728797,#d6dde2,#6d8191);box-shadow:0 0 0 1px #637988}.col1{left:4%}.col2{left:48%}.col3{right:3%}.roof{position:absolute;height:10px;background:linear-gradient(#738896,#dbe1e5,#728694);transform-origin:left}.r1{left:4%;top:25%;width:94%}.r2{left:4%;top:55%;width:94%}.r3{left:4%;top:82%;width:94%}.brace{position:absolute;height:3px;width:48%;background:#718696;transform-origin:left}.x1{left:4%;top:82%;transform:rotate(-36deg)}.x2{left:48%;top:82%;transform:rotate(36deg)}.dimension{position:absolute;color:#70879a;font:700 11px ui-monospace,monospace}.d1{top:7%;left:22%}.d2{right:2%;top:38%;writing-mode:vertical-rl}.art-label{position:absolute;bottom:0;left:12%;border-left:3px solid var(--navy);padding-left:12px}.art-label strong{display:block;letter-spacing:.14em;font-size:12px}.art-label span{font-size:10px;color:#7c8f9f;letter-spacing:.25em}
.value-strip{background:var(--navy);color:#fff}.value-grid{display:grid;grid-template-columns:repeat(4,1fr);padding:22px 0}.value-grid div{padding:0 24px;border-left:1px solid rgba(255,255,255,.22)}.value-grid div:first-child{border-left:0;padding-left:0}.value-grid strong,.value-grid span{display:block}.value-grid strong{font-size:14px}.value-grid span{font-size:11px;color:#b9cbe0}
.section{padding:105px 0}.section-head{display:flex;justify-content:space-between;align-items:end;gap:50px;margin-bottom:50px}.section h2{font-size:clamp(38px,4.6vw,62px);line-height:1.04;letter-spacing:-.045em;margin:0}.section-head>p{max-width:430px;color:var(--muted);margin:0}.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.service-card{min-height:230px;border:1px solid var(--line);border-radius:18px;padding:27px;background:#fff;transition:.2s}.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.service-card>b{font-size:11px;color:#7890a3}.service-card h3{margin:20px 0 9px;font-size:21px}.service-card p{font-size:13px;color:#6b7d8f}.service-card.accent{background:linear-gradient(145deg,#07345f,#0c5b92);color:#fff;border-color:transparent}.service-card.accent>b,.service-card.accent p{color:#c3d8e8}
.tools-section{background:var(--paper);border-block:1px solid #e7edf2}.tool-layout{display:grid;grid-template-columns:285px 1fr;gap:20px;align-items:start}.tool-menu{display:grid;gap:9px;position:sticky;top:98px}.tool-tab{display:grid;grid-template-columns:44px 1fr;gap:2px 11px;padding:15px;text-align:left;border:1px solid var(--line);background:#fff;border-radius:15px;cursor:pointer;color:var(--ink);font:inherit}.tool-tab span{grid-row:1/3;display:grid;place-items:center;border-radius:9px;background:#edf4f8;color:var(--navy);font-size:22px}.tool-tab b{font-size:13px}.tool-tab small{font-size:10px;color:#7d8e9d}.tool-tab.active{border-color:#7ea4bf;box-shadow:0 9px 25px rgba(8,35,61,.08)}.tool-tab.active span{background:var(--navy);color:#fff}.tool-panel{background:#fff;border:1px solid var(--line);border-radius:22px;box-shadow:var(--shadow);overflow:hidden}.tool-title{padding:27px 30px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center}.tool-kicker{font-size:10px;letter-spacing:.15em;color:#7890a3;font-weight:900}.tool-title h3{font-size:27px;margin:5px 0 0}.status{font-size:10px;background:#eaf7ef;color:#33734e;padding:8px 10px;border-radius:99px;font-weight:900}.calculator{display:none;padding:28px}.tool-view.active .calculator{display:block}.subtabs{display:flex;gap:7px;margin-bottom:22px}.steel-mode{border:1px solid var(--line);background:#fff;border-radius:9px;padding:9px 13px;font:inherit;font-size:12px;font-weight:850;cursor:pointer;color:#4c6174}.steel-mode.active{background:var(--navy);border-color:var(--navy);color:#fff}.hidden{display:none!important}.calc-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.calc-grid label,.contact-form label{display:grid;gap:6px;color:#40566b;font-size:11px;font-weight:900}.calc-grid input,.calc-grid select,.contact-form input,.contact-form select,.contact-form textarea{width:100%;padding:12px 13px;border:1px solid #cbd8e2;border-radius:10px;background:#fbfdfe;color:var(--ink);font:inherit;outline:none}.calc-grid input:focus,.calc-grid select:focus,.contact-form input:focus,.contact-form textarea:focus{border-color:#5b8aad;box-shadow:0 0 0 3px rgba(91,138,173,.1)}.profile-info{margin-top:14px;padding:13px 15px;background:#f3f7fa;border:1px solid #e1e9ef;border-radius:10px;color:#5e7487;font-size:12px}.profile-info b{color:var(--navy)}.custom-help{margin-top:12px;color:#748798;font-size:11px}.result{margin-top:23px;padding:21px;border-radius:15px;background:#f3f7fa;color:var(--ink)}.result span{display:block;color:#65798b;font-size:11px;font-weight:700}.result strong{display:block;font-size:32px;line-height:1.15;margin:3px 0}.result small{color:#65798b;font-size:11px}.result.dual,.result.triple{display:grid;grid-template-columns:1fr 1fr auto;gap:20px;align-items:center}.result.triple{grid-template-columns:1fr 1fr 1fr auto}.result em{font-style:normal;background:#eaf2f7;color:var(--navy);padding:9px 11px;border-radius:9px;font-size:11px;font-weight:900;white-space:nowrap}.note{margin-top:14px;color:#748696;font-size:10px}.dark-section{background:#071c30;color:#fff}.light .eyebrow{color:#8db7d7}.light p{color:#aabccc}.dark-section h2 span{color:#91c2e8}.work-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.work-grid>div{min-height:220px;border:1px solid rgba(255,255,255,.12);border-radius:17px;padding:25px;background:rgba(255,255,255,.04)}.work-grid b{font-size:10px;color:#8fb8d5;letter-spacing:.12em}.work-grid h3{font-size:21px;margin:35px 0 10px}.work-grid p{font-size:13px;color:#a8b9c8}.about-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:80px;align-items:center}.about-mark span{font-size:64px;font-weight:950;letter-spacing:.05em}.about-mark b{font-size:18px;letter-spacing:.1em}.about-mark i{font-style:normal;color:#9eb9cd;margin-top:10px;font-size:11px;letter-spacing:.14em}.about-grid p{color:#65798b;max-width:650px}.about-points{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:28px}.about-points span{border-top:2px solid #d8e1e8;padding-top:10px;font-size:12px;font-weight:850}.about-points b{display:block;font-size:10px;color:var(--navy2);margin-bottom:4px}.contact-section{background:var(--paper)}.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:65px}.contact-section p{color:#65798b;max-width:500px}.contact-list{display:grid;gap:12px;margin-top:28px}.contact-list>a,.contact-list>div{display:flex;align-items:center;gap:13px}.contact-list span{width:43px;height:43px;border-radius:11px;background:#e7eff5;color:var(--navy);display:grid;place-items:center}.contact-list small{display:block;font-size:9px;color:#8192a0;letter-spacing:.14em;font-weight:900}.contact-list b{font-size:13px}.contact-form{background:#fff;border:1px solid var(--line);border-radius:20px;padding:27px;box-shadow:var(--shadow);display:grid;gap:15px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:15px}.contact-form small{color:#7c8e9d;font-size:10px}.contact-form .btn{width:max-content}footer{background:#061a2c;color:#fff;padding:50px 0 18px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:50px}.footer-grid img{width:185px;filter:brightness(0) invert(1);opacity:.92}.footer-grid p,.footer-grid a,.footer-grid span{display:block;color:#9eb1c2;font-size:12px;margin-top:8px}.footer-grid b{font-size:12px}.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:38px;padding-top:16px;display:flex;justify-content:space-between;color:#73899c;font-size:10px}
@media(max-width:900px){.nav{display:none;position:absolute;left:20px;right:20px;top:70px;background:#fff;border:1px solid var(--line);border-radius:15px;padding:10px;box-shadow:var(--shadow);flex-direction:column;gap:0}.nav.open{display:flex}.nav a{padding:12px}.menu-toggle{display:block}.hero-inner{grid-template-columns:1fr;min-height:auto;padding:80px 0}.hero-art{display:none}.section-head{display:block}.section-head>p{margin-top:18px}.service-grid{grid-template-columns:1fr 1fr}.tool-layout{grid-template-columns:1fr}.tool-menu{position:static;grid-template-columns:repeat(2,1fr)}.work-grid{grid-template-columns:1fr 1fr}.about-grid,.contact-grid{grid-template-columns:1fr}.about-mark{min-height:300px}.value-grid{grid-template-columns:1fr 1fr;gap:17px}.value-grid div:nth-child(3){border-left:0;padding-left:0}}
@media(max-width:620px){.container{width:calc(100% - 28px)}.nav-wrap{height:68px}.brand img{width:150px}.hero h1{font-size:48px}.hero p{font-size:16px}.hero-actions{display:grid}.hero-actions .btn{width:100%}.value-grid,.service-grid,.work-grid{grid-template-columns:1fr}.value-grid div{border-left:0;padding-left:0;border-bottom:1px solid rgba(255,255,255,.13);padding-bottom:12px}.section{padding:75px 0}.tool-menu{grid-template-columns:1fr}.tool-title{padding:20px;display:block}.status{display:inline-block;margin-top:11px}.calculator{padding:20px}.calc-grid,.form-row{grid-template-columns:1fr}.result.dual,.result.triple{grid-template-columns:1fr}.result em{width:max-content}.about-points{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.footer-bottom{display:block}.footer-bottom span{display:block;margin-top:7px}}

/* V3 visual cleanup + SEO content */
.brand{display:flex;align-items:center;height:58px;max-width:230px;overflow:hidden}.brand img{width:205px;height:52px;object-fit:contain;object-position:left center}
.hero-art.seo-panel{height:420px;border-left:0;border:1px solid #cfdae3;border-radius:24px;background:linear-gradient(145deg,#07345f,#0b588e);padding:34px;display:flex;flex-direction:column;justify-content:space-between;box-shadow:var(--shadow);color:#fff}
.seo-panel-top{display:flex;justify-content:space-between;font-size:10px;letter-spacing:.14em;color:#b9d0e1;font-weight:900}.seo-panel-top b{font-weight:800}
.seo-panel-main{border-block:1px solid rgba(255,255,255,.18);padding:35px 0;display:grid;gap:2px}.seo-panel-main span{font-size:14px;letter-spacing:.22em;color:#b6d1e3;font-weight:800}.seo-panel-main strong{font-size:42px;line-height:1;letter-spacing:-.04em}.seo-panel-bottom{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}.seo-panel-bottom i{font-style:normal;text-align:center;border:1px solid rgba(255,255,255,.18);padding:9px 3px;border-radius:8px;font-size:9px;letter-spacing:.08em;color:#d9e7f1}
.seo-content{background:#fff;padding-top:95px;padding-bottom:95px}.seo-columns{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.seo-columns article{border-top:2px solid #d8e2ea;padding:20px 4px 8px}.seo-columns h3{margin:0 0 8px;font-size:19px;color:var(--navy)}.seo-columns p{margin:0;color:#65798b;font-size:13px;max-width:570px}.faq-section{background:#f5f8fb;padding-top:90px}.faq-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.faq-grid article{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px}.faq-grid h3{font-size:17px;margin:0 0 8px}.faq-grid p{font-size:13px;color:#66798b;margin:0}
@media(max-width:900px){.hero-art.seo-panel{display:flex;height:320px}.seo-columns,.faq-grid{grid-template-columns:1fr}.brand img{width:190px;height:50px}}
@media(max-width:620px){.brand{max-width:190px}.brand img{width:175px;height:48px}.hero-art.seo-panel{height:290px;padding:24px}.seo-panel-main strong{font-size:32px}.seo-panel-bottom{grid-template-columns:repeat(2,1fr)}}

/* V4 cleanup: no decorative/faux EFOR logos in lower sections */
.about-copy-space{
  min-height:420px;
  border-radius:25px;
  background:
    linear-gradient(135deg,rgba(6,54,96,.97),rgba(11,88,142,.97)),
    repeating-linear-gradient(135deg,transparent 0 26px,rgba(255,255,255,.05) 27px 28px);
  position:relative;
  overflow:hidden;
}
.about-copy-space:before{
  content:"";
  position:absolute;inset:55px;
  border:1px solid rgba(255,255,255,.17);
  border-radius:18px;
}
.about-copy-space:after{
  content:"MÜHENDİSLİK • HESAP • ANALİZ • PROJE";
  position:absolute;left:55px;right:55px;bottom:55px;
  color:rgba(255,255,255,.68);font-size:10px;letter-spacing:.18em;
}
@media(max-width:900px){.about-copy-space{min-height:300px}}
@media(max-width:620px){.about-copy-space{min-height:260px}.about-copy-space:before{inset:35px}.about-copy-space:after{left:35px;right:35px;bottom:35px;font-size:8px}}

/* V4: clean lower sections, no repeated/decorative EFOR logos */
.about-copy-space{min-height:420px;border-radius:25px;background:linear-gradient(135deg,#07345f,#0b588e);position:relative;overflow:hidden}
.about-copy-space:before{content:"";position:absolute;inset:55px;border:1px solid rgba(255,255,255,.17);border-radius:18px}
.about-copy-space:after{content:"MÜHENDİSLİK  •  HESAP  •  ANALİZ  •  PROJE";position:absolute;left:55px;right:55px;bottom:55px;color:rgba(255,255,255,.68);font-size:10px;letter-spacing:.18em}
@media(max-width:900px){.about-copy-space{min-height:300px}}
@media(max-width:620px){.about-copy-space{min-height:260px}.about-copy-space:before{inset:35px}.about-copy-space:after{left:35px;right:35px;bottom:35px;font-size:8px}}

/* V5: Hakkımızda bölümünde kaldırılan logo alanının boşluğunu temizle */
.about-grid{display:block;max-width:900px}
.about-full{max-width:900px}
.about-full p{max-width:820px}
.about-full .about-points{max-width:820px}

.page-hero{padding:78px 0 62px;background:#f7f9fb;border-bottom:1px solid var(--line)}
.page-hero h1{font-size:clamp(38px,5vw,64px);line-height:1.05;letter-spacing:-.045em;margin:8px 0 14px;color:var(--ink)}
.page-hero p{max-width:760px;color:var(--muted);font-size:16px;margin:0}
.breadcrumb{font-size:11px;color:var(--navy2);font-weight:900;letter-spacing:.12em;text-transform:uppercase}
.prose{max-width:900px}.prose h2{font-size:32px;line-height:1.15;margin:0 0 16px}.prose h3{font-size:20px;margin:32px 0 8px}.prose p,.prose li{color:var(--muted);font-size:14px}.prose ul{padding-left:20px}
.page-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.page-card{border:1px solid var(--line);border-radius:16px;padding:24px;background:#fff}.page-card h3{margin:8px 0;font-size:20px}.page-card p{color:var(--muted);font-size:13px;margin:0}.page-card .btn{margin-top:17px}
.tools-hub{background:#f7f9fb}.tools-hub-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-hub-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:23px;min-height:190px}.tool-hub-card .icon{width:42px;height:42px;border-radius:10px;background:#edf4f9;color:var(--navy);display:grid;place-items:center;font-weight:900}.tool-hub-card h3{font-size:19px;margin:15px 0 7px}.tool-hub-card p{font-size:12px;color:var(--muted);margin:0 0 14px}
.single-tool{background:#f7f9fb;padding:30px 0 70px}.single-tool .tool-panel{max-width:900px;margin:0 auto;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:24px}.single-tool .tool-title{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.single-tool .tool-title h3{margin:4px 0;font-size:27px}.install-card{margin-top:16px;padding:14px 16px;border:1px dashed #b7cad8;border-radius:11px;background:#f8fbfd;display:flex;justify-content:space-between;align-items:center;gap:12px;font-size:12px;color:var(--muted)}.install-card button{display:none}
@media(max-width:800px){.page-grid,.tools-hub-grid{grid-template-columns:1fr 1fr}.single-tool .tool-panel{padding:16px}}
@media(max-width:600px){.page-hero{padding:48px 0}.page-grid,.tools-hub-grid{grid-template-columns:1fr}.single-tool{padding:15px 0 45px}.single-tool .tool-panel{border-radius:11px;padding:12px}.single-tool .tool-title{align-items:flex-start}.single-tool .tool-title h3{font-size:22px}.install-card{display:block}.install-card button{display:inline-flex;margin-top:10px}}