:root {
  --blue: #0a4da2;
  --blue-bright: #116bd4;
  --navy: #0b1d33;
  --navy-2: #071525;
  --ink: #111820;
  --muted: #5c6878;
  --line: #dce3eb;
  --surface: #f3f6f9;
  --white: #ffffff;
  --shadow: 0 24px 60px rgba(8, 29, 51, .12);
  --radius: 20px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
::selection { color: var(--white); background: var(--blue); }

.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 1000; top: 8px; left: 8px; padding: 10px 14px; background: #fff; border-radius: 8px; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.topbar { background: var(--navy-2); color: rgba(255,255,255,.78); font-size: 13px; }
.topbar__inner { min-height: 38px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.topbar p { margin: 0; }
.topbar__links { display: flex; align-items: center; gap: 10px; }
.topbar a:hover { color: #fff; }

.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94); border-bottom: 1px solid rgba(15,32,54,.08); backdrop-filter: blur(16px); }
.header__inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { width: min(405px, 43vw); }
.brand img { width: 100%; height: auto; }
.desktop-nav { display: flex; align-items: center; gap: 27px; font-size: 14px; font-weight: 700; }
.desktop-nav > a:not(.nav-cta) { position: relative; padding-block: 27px; }
.desktop-nav > a:not(.nav-cta)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: 19px; height: 2px; background: var(--blue); transition: right .25s ease; }
.desktop-nav > a:not(.nav-cta):hover::after { right: 0; }
.nav-cta { padding: 11px 18px; color: #fff; background: var(--blue); border-radius: 10px; box-shadow: 0 10px 24px rgba(10,77,162,.22); }
.mobile-menu { display: none; position: relative; }
.mobile-menu summary { list-style: none; width: 42px; height: 42px; display: grid; align-content: center; gap: 5px; padding: 9px; cursor: pointer; border: 1px solid var(--line); border-radius: 10px; }
.mobile-menu summary::-webkit-details-marker { display: none; }
.mobile-menu summary span { height: 2px; background: var(--navy); border-radius: 3px; }
.mobile-menu nav { position: absolute; right: 0; top: 52px; min-width: 230px; padding: 12px; display: grid; background: #fff; box-shadow: var(--shadow); border: 1px solid var(--line); border-radius: 14px; }
.mobile-menu nav a { padding: 11px 12px; border-radius: 8px; font-weight: 700; }
.mobile-menu nav a:hover { background: var(--surface); }

.hero { position: relative; min-height: 690px; display: grid; align-items: center; overflow: hidden; color: #fff; background: var(--navy); }
.hero__media { position: absolute; inset: 0; background: url("assets/hero-celik-yapi.webp") center 44% / cover no-repeat; transform: scale(1.015); }
.hero__overlay { position: absolute; inset: 0; background:
  linear-gradient(90deg, rgba(5,18,34,.94) 0%, rgba(6,23,42,.82) 46%, rgba(6,23,42,.25) 78%, rgba(6,23,42,.18) 100%),
  linear-gradient(0deg, rgba(4,14,26,.45), transparent 45%); }
.hero::after { content:""; position:absolute; inset:0; pointer-events:none; opacity:.12; background-image: linear-gradient(rgba(255,255,255,.18) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.18) 1px, transparent 1px); background-size: 64px 64px; mask-image: linear-gradient(90deg,#000,transparent 72%); }
.hero__content { position: relative; z-index: 2; display: grid; grid-template-columns: minmax(0, 1.3fr) 350px; align-items: end; gap: 70px; padding-block: 95px 105px; }
.hero__copy { max-width: 760px; }
.eyebrow { margin: 0 0 18px; display: flex; align-items: center; gap: 12px; color: rgba(255,255,255,.75); font-size: 12px; font-weight: 800; letter-spacing: .16em; }
.eyebrow span { width: 34px; height: 2px; background: var(--blue-bright); }
.eyebrow--dark { color: var(--blue); }
.hero h1 { margin: 0; max-width: 760px; font-size: clamp(44px, 6.2vw, 79px); line-height: .99; letter-spacing: -.045em; font-weight: 780; }
.hero h1 strong { color: #72adff; font-weight: inherit; }
.hero__lead { margin: 28px 0 0; max-width: 680px; color: rgba(255,255,255,.76); font-size: clamp(17px, 1.6vw, 20px); line-height: 1.65; }
.hero__actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 36px; }
.button { min-height: 52px; padding: 0 22px; display: inline-flex; align-items: center; justify-content: center; border-radius: 11px; font-weight: 800; transition: transform .2s ease, box-shadow .2s ease, background .2s ease; }
.button:hover { transform: translateY(-2px); }
.button--primary { color: #fff; background: var(--blue-bright); box-shadow: 0 16px 32px rgba(17,107,212,.32); }
.button--primary:hover { background: #1e78dc; }
.button--ghost { color: #fff; border: 1px solid rgba(255,255,255,.35); background: rgba(255,255,255,.08); backdrop-filter: blur(8px); }
.button--ghost:hover { background: rgba(255,255,255,.15); }
.hero__trust { margin: 44px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 0; list-style: none; }
.hero__trust li { min-width: 150px; padding: 0 24px; border-left: 1px solid rgba(255,255,255,.2); }
.hero__trust li:first-child { padding-left: 0; border-left: 0; }
.hero__trust b { display: block; font-size: 22px; }
.hero__trust span { display: block; color: rgba(255,255,255,.6); font-size: 12px; }
.hero__card { padding: 28px; background: rgba(7,24,43,.76); border: 1px solid rgba(255,255,255,.18); border-radius: var(--radius); box-shadow: 0 26px 60px rgba(0,0,0,.28); backdrop-filter: blur(16px); }
.hero__card-label { margin: 0; color: #79b4ff; font-size: 11px; font-weight: 850; letter-spacing: .14em; text-transform: uppercase; }
.hero__card h2 { margin: 9px 0 12px; font-size: 27px; line-height: 1.2; letter-spacing: -.02em; }
.hero__card > p:not(.hero__card-label) { color: rgba(255,255,255,.67); font-size: 14px; }
.hero__card-links { margin-top: 23px; display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.hero__card-links a { padding: 11px 10px; text-align: center; border-radius: 9px; font-size: 13px; font-weight: 800; background: #fff; color: var(--navy); }
.hero__card-links a:last-child { background: #22a85a; color: #fff; }
.hero__scroll { position: absolute; z-index: 4; left: 50%; bottom: 24px; width: 28px; height: 44px; border: 1px solid rgba(255,255,255,.45); border-radius: 20px; }
.hero__scroll span { position: absolute; top: 9px; left: 50%; width: 4px; height: 7px; border-radius: 4px; background: #fff; transform: translateX(-50%); animation: scrollDown 1.7s infinite; }
@keyframes scrollDown { 0% { opacity: 0; transform: translate(-50%,0); } 40% { opacity: 1; } 100% { opacity: 0; transform: translate(-50%,13px); } }

.section { padding-block: 110px; }
.section-heading { margin-bottom: 45px; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(290px, .65fr); gap: 70px; align-items: end; }
.section-heading h2, .about h2, .faq h2, .contact h2 { margin: 0; font-size: clamp(34px, 4.5vw, 56px); line-height: 1.08; letter-spacing: -.04em; }
.section-heading > p { margin: 0; color: var(--muted); font-size: 17px; }

.services { background: #fff; }
.services-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 18px; }
.service-card { position: relative; grid-column: span 2; min-height: 330px; padding: 29px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; overflow: hidden; transition: transform .24s ease, box-shadow .24s ease, border-color .24s ease; }
.service-card:nth-child(4), .service-card:nth-child(5) { grid-column: span 3; min-height: 280px; }
.service-card:hover { transform: translateY(-6px); border-color: transparent; box-shadow: var(--shadow); }
.service-card--featured { color: #fff; border-color: var(--navy); background: var(--navy); }
.service-card--featured::after { content:""; position:absolute; width:180px; height:180px; right:-65px; top:-70px; border: 28px solid rgba(255,255,255,.055); border-radius:50%; }
.service-card__number { color: #8a96a5; font-size: 12px; font-weight: 800; letter-spacing: .16em; }
.service-card--featured .service-card__number { color: #7db5ff; }
.service-card__icon { margin: 45px 0 24px; width: 50px; height: 50px; color: var(--blue); }
.service-card__icon svg { width: 100%; height: 100%; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.service-card--featured .service-card__icon { color: #8ac1ff; }
.service-card h3 { margin: 0 0 12px; font-size: 22px; line-height: 1.25; letter-spacing: -.02em; }
.service-card p { margin: 0; color: var(--muted); font-size: 14px; }
.service-card--featured p { color: rgba(255,255,255,.67); }
.service-card a { position: absolute; left: 29px; bottom: 27px; color: var(--blue); font-size: 13px; font-weight: 800; }
.service-card--featured a { color: #fff; }
.service-card a span { margin-left: 5px; }

.about { background: var(--surface); }
.about__grid { display: grid; grid-template-columns: 1fr .92fr; gap: 80px; align-items: center; }
.about__visual { position: relative; }
.about__visual::before { content:""; position:absolute; z-index:0; width:68%; height:68%; left:-23px; bottom:-23px; border:1px solid #aab8c8; border-radius:24px; }
.about__visual img { position: relative; z-index: 1; width: 100%; aspect-ratio: 1.27; object-fit: cover; object-position: center; border-radius: 24px; box-shadow: var(--shadow); }
.about__badge { position: absolute; z-index:2; right:-20px; bottom:36px; width:150px; aspect-ratio:1; padding:22px; display:flex; flex-direction:column; justify-content:center; color:#fff; background:var(--blue); border-radius:50%; border:8px solid var(--surface); text-align:center; }
.about__badge b { font-size: 31px; line-height: 1; }
.about__badge span { margin-top:7px; font-size:11px; line-height:1.25; }
.about__lead { margin: 25px 0 10px; color: var(--ink); font-size: 18px; font-weight: 600; }
.about__copy > p:not(.eyebrow):not(.about__lead) { color: var(--muted); }
.about blockquote { margin: 28px 0; padding: 11px 0 11px 20px; border-left: 3px solid var(--blue); color: var(--navy); font-size: 20px; font-weight: 750; }
.timeline { margin-top: 30px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.timeline div { padding-top: 15px; border-top: 2px solid var(--line); }
.timeline b { display:block; color:var(--blue); font-size:20px; }
.timeline span { display:block; color:var(--muted); font-size:12px; line-height:1.4; }

.references { color: #fff; background: var(--navy); }
.section-heading--light > p { color: rgba(255,255,255,.62); }
.project-grid { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 270px; gap: 18px; }
.project-card { position: relative; grid-column: span 4; overflow: hidden; border-radius: 18px; background: #0d243e; }
.project-card--large { grid-column: span 7; grid-row: span 2; }
.project-card--wide { grid-column: span 5; }
.project-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .7s cubic-bezier(.2,.7,.2,1); }
.project-card:hover img { transform: scale(1.045); }
.project-card::after { content:""; position:absolute; inset:0; background:linear-gradient(0deg,rgba(3,14,26,.9),rgba(3,14,26,.05) 68%); }
.project-card__overlay { position:absolute; z-index:2; left:0; right:0; bottom:0; padding:24px; }
.project-card__overlay span { color:#7db5ff; font-size:11px; font-weight:850; letter-spacing:.13em; text-transform:uppercase; }
.project-card__overlay h3 { margin:5px 0 1px; font-size:22px; line-height:1.2; }
.project-card--large h3 { font-size:30px; }
.project-card__overlay p { margin:0; color:rgba(255,255,255,.62); font-size:13px; }
.reference-list { margin-top: 46px; padding-top: 32px; display:flex; flex-wrap:wrap; justify-content:center; gap:12px; border-top:1px solid rgba(255,255,255,.12); }
.reference-list span { padding:8px 13px; color:rgba(255,255,255,.66); border:1px solid rgba(255,255,255,.15); border-radius:999px; font-size:12px; }

.process { background:#fff; }
.process-grid { margin:0; padding:0; display:grid; grid-template-columns:repeat(4,1fr); list-style:none; counter-reset:item; }
.process-grid li { position:relative; padding:30px 28px 25px; border-top:1px solid var(--line); border-bottom:1px solid var(--line); border-left:1px solid var(--line); }
.process-grid li:last-child { border-right:1px solid var(--line); }
.process-grid li::after { content:""; position:absolute; top:-2px; left:0; width:0; height:3px; background:var(--blue); transition:width .3s ease; }
.process-grid li:hover::after { width:100%; }
.process-grid span { color:var(--blue); font-size:12px; font-weight:850; letter-spacing:.14em; }
.process-grid h3 { margin:32px 0 8px; font-size:20px; }
.process-grid p { margin:0; color:var(--muted); font-size:13px; }

.faq { background:var(--surface); }
.faq__grid { display:grid; grid-template-columns:.8fr 1.15fr; gap:90px; }
.faq__grid > div:first-child > p:last-child { margin-top:22px; color:var(--muted); }
.faq__items { border-top:1px solid #cbd5e1; }
.faq details { border-bottom:1px solid #cbd5e1; }
.faq summary { position:relative; padding:23px 45px 23px 0; cursor:pointer; list-style:none; font-weight:760; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; position:absolute; right:4px; top:17px; color:var(--blue); font-size:26px; font-weight:400; }
.faq details[open] summary::after { content:"−"; }
.faq details p { margin:0; padding:0 45px 24px 0; color:var(--muted); }

.contact { padding-block:100px; color:#fff; background:linear-gradient(125deg,#0a4da2,#0b1d33 72%); }
.contact__grid { display:grid; grid-template-columns:1fr 440px; gap:80px; align-items:center; }
.contact__copy > p:not(.eyebrow) { max-width:650px; color:rgba(255,255,255,.7); font-size:18px; }
.contact__actions { margin-top:30px; display:flex; flex-wrap:wrap; gap:12px; }
.button--light { color:var(--navy); background:#fff; }
.button--outline-light { color:#fff; border:1px solid rgba(255,255,255,.38); }
.contact-card { padding:30px; display:grid; gap:19px; font-style:normal; background:rgba(255,255,255,.08); border:1px solid rgba(255,255,255,.18); border-radius:var(--radius); backdrop-filter:blur(14px); }
.contact-card > div { display:grid; grid-template-columns:88px 1fr; gap:16px; }
.contact-card span { color:#7db5ff; font-size:11px; font-weight:850; letter-spacing:.12em; text-transform:uppercase; }
.contact-card p { margin:0; color:rgba(255,255,255,.76); font-size:14px; }
.contact-card a:hover { color:#fff; }
.map-link { margin-top:4px; padding-top:18px; display:flex; justify-content:space-between; border-top:1px solid rgba(255,255,255,.15); font-weight:800; }

.site-footer { padding-top:58px; color:rgba(255,255,255,.68); background:var(--navy-2); }
.footer__grid { display:grid; grid-template-columns:320px 1fr auto; gap:55px; align-items:center; }
.footer__brand { width:310px; }
.footer__brand img { width:100%; height:auto; }
.footer__grid p { margin:0; max-width:430px; font-size:13px; }
.footer__grid nav { display:flex; gap:20px; font-size:13px; font-weight:700; }
.footer__grid a:hover { color:#fff; }
.footer__bottom { margin-top:44px; padding-block:18px; display:flex; justify-content:space-between; gap:30px; border-top:1px solid rgba(255,255,255,.1); font-size:12px; }
.footer__bottom p { margin:0; }
.mobile-actions { display:none; }

@media (max-width: 980px) {
  .desktop-nav { display:none; }
  .mobile-menu { display:block; }
  .brand { width:min(390px,70vw); }
  .hero__content { grid-template-columns:1fr; align-items:center; gap:30px; }
  .hero__card { max-width:500px; }
  .services-grid { grid-template-columns:repeat(2,1fr); }
  .service-card, .service-card:nth-child(4), .service-card:nth-child(5) { grid-column:span 1; min-height:330px; }
  .about__grid { gap:45px; }
  .about__badge { right:-8px; }
  .section-heading { gap:40px; }
  .project-card { grid-column:span 6; }
  .project-card--large { grid-column:span 7; }
  .project-card--wide { grid-column:span 5; }
  .process-grid { grid-template-columns:repeat(2,1fr); }
  .process-grid li:nth-child(2) { border-right:1px solid var(--line); }
  .process-grid li:nth-child(n+3) { border-top:0; }
  .faq__grid { gap:55px; }
  .contact__grid { grid-template-columns:1fr 380px; gap:45px; }
  .footer__grid { grid-template-columns:280px 1fr; }
  .footer__grid nav { grid-column:1/-1; }
}

@media (max-width: 740px) {
  .container { width:min(calc(100% - 28px),var(--container)); }
  .topbar p { display:none; }
  .topbar__inner { justify-content:center; }
  .header__inner { min-height:70px; }
  .brand { width:min(310px,74vw); }
  .hero { min-height:760px; }
  .hero__media { background-position:63% center; }
  .hero__overlay { background:linear-gradient(90deg,rgba(5,18,34,.94),rgba(6,23,42,.73)),linear-gradient(0deg,rgba(4,14,26,.4),transparent); }
  .hero__content { padding-block:72px 88px; }
  .hero h1 { font-size:clamp(42px,13vw,61px); }
  .hero__lead { font-size:16px; }
  .hero__actions .button { width:100%; }
  .hero__trust { display:grid; grid-template-columns:repeat(3,1fr); width:100%; }
  .hero__trust li { min-width:0; padding:0 10px; }
  .hero__trust b { font-size:19px; }
  .hero__trust span { font-size:10px; }
  .hero__card { display:none; }
  .section { padding-block:80px; }
  .section-heading { grid-template-columns:1fr; gap:16px; margin-bottom:32px; }
  .section-heading > p { font-size:15px; }
  .services-grid { grid-template-columns:1fr; }
  .service-card, .service-card:nth-child(4), .service-card:nth-child(5) { min-height:300px; }
  .about__grid { grid-template-columns:1fr; }
  .about__visual { order:2; }
  .about__badge { width:126px; right:0; bottom:18px; }
  .timeline { grid-template-columns:1fr; }
  .timeline div { display:grid; grid-template-columns:70px 1fr; align-items:center; }
  .project-grid { grid-template-columns:1fr; grid-auto-rows:290px; }
  .project-card, .project-card--large, .project-card--wide { grid-column:1; grid-row:auto; }
  .project-card--large { min-height:390px; }
  .project-card--large h3 { font-size:25px; }
  .process-grid { grid-template-columns:1fr; }
  .process-grid li { border-right:1px solid var(--line); border-top:0; }
  .process-grid li:first-child { border-top:1px solid var(--line); }
  .faq__grid { grid-template-columns:1fr; gap:35px; }
  .contact { padding-block:80px; }
  .contact__grid { grid-template-columns:1fr; }
  .contact-card > div { grid-template-columns:1fr; gap:4px; }
  .footer__grid { grid-template-columns:1fr; gap:28px; }
  .footer__grid nav { grid-column:auto; flex-wrap:wrap; }
  .footer__bottom { margin-bottom:58px; flex-direction:column; gap:8px; }
  .mobile-actions { position:fixed; z-index:110; left:10px; right:10px; bottom:10px; display:grid; grid-template-columns:1fr 1fr; gap:8px; padding:7px; background:rgba(7,21,37,.92); border:1px solid rgba(255,255,255,.12); border-radius:14px; box-shadow:0 16px 40px rgba(0,0,0,.3); backdrop-filter:blur(12px); }
  .mobile-actions a { padding:11px; color:#fff; background:var(--blue); border-radius:9px; text-align:center; font-size:13px; font-weight:800; }
  .mobile-actions a:last-child { background:#22a85a; }
}

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