/* =============================================================
   ZEON — Ortak tasarım dosyası
   Renk, genişlik ve tipografi ayarları :root bölümündedir.
   Mobil düzen: 1000 px / 760 px / 480 px.
   ============================================================= */

:root {
  --ink: #132135;
  --muted: #546176;
  --blue: #2459e9;
  --blue-dark: #1946c5;
  --blue-light: #edf2ff;
  --paper: #ffffff;
  --surface: #f3f5f8;
  --line: #dce2ea;
  --night: #101d31;
  --content: 1224px;
  --gutter: clamp(22px, 4vw, 64px);
  --radius: 4px;
  --font: "Segoe UI", Arial, Helvetica, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 106px; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: var(--font); font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
body, button, input, textarea, select { font-family: var(--font); }
button, input, textarea, select { font-size: 1rem; }
button, a, input, select, textarea, summary { -webkit-tap-highlight-color: transparent; }
button, input, textarea, select { color: inherit; }
button, summary { cursor: pointer; }
button:disabled { cursor: not-allowed; }
button { border: 0; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
svg { display: block; flex-shrink: 0; }
h1, h2, h3, p { margin: 0; }
h1, h2, h3 { font-weight: 600; }
h1, h2 { line-height: 1.12; letter-spacing: -0.045em; }
p { color: var(--muted); }
ul, ol { margin: 0; padding: 0; }
::selection { background: #dce7ff; color: var(--ink); }
:focus-visible { outline: 3px solid var(--blue); outline-offset: 5px; }
[hidden] { display: none !important; }
.container { width: min(var(--content), calc(100% - var(--gutter) * 2)); margin-inline: auto; }
.section { padding-block: clamp(68px, 8vw, 110px); }
.eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 26px; color: var(--blue); font-size: .8125rem; font-weight: 650; line-height: 1.45; letter-spacing: .12em; text-transform: uppercase; }
.eyebrow::before { content: ""; width: 28px; height: 2px; background: currentColor; flex-shrink: 0; }
.eyebrow.light { color: #9fbaff; }
.accent { color: var(--blue); }
.arrow { width: 20px; height: 20px; }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 22px; min-height: 54px; padding: 14px 23px; border: 1px solid transparent; border-radius: var(--radius); background: var(--blue); color: white; font-size: .9375rem; line-height: 1.5; font-weight: 600; transition: background .2s, transform .2s; }
.button:hover { background: var(--blue-dark); transform: translateY(-2px); }
.button.light { color: var(--ink); background: white; }
.button.light:hover { background: #e9eef7; }
.text-link { display: inline-flex; align-items: center; gap: 14px; min-height: 44px; color: var(--blue); font-size: .9375rem; font-weight: 600; }
.text-link:hover { text-decoration: underline; text-underline-offset: 6px; }
.skip-link { position: fixed; z-index: 100; top: -100px; left: 20px; padding: 12px 20px; background: var(--ink); color: white; }
.skip-link:focus { top: 12px; }

/* Üst bilgi ve mobil menü */
.site-header { position: sticky; top: 0; z-index: 30; background: rgba(255,255,255,.97); border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; min-height: 92px; gap: 30px; }
.brand { display: inline-flex; flex-shrink: 0; align-items: center; gap: 19px; }
.brand-word { font-weight: 750; font-size: 2.8rem; line-height: 1; letter-spacing: -.085em; }
.brand-word b { color: var(--blue); font-weight: inherit; }
.brand-caption { padding-left: 19px; border-left: 1px solid var(--line); color: var(--muted); font-size: .75rem; font-weight: 600; line-height: 1.6; letter-spacing: .1em; text-transform: uppercase; }

/* Logo image in header */
.brand-logo { display: inline-block; width: 220px; max-width: 55vw; height: auto; }
.brand-logo img { display: block; width: 100%; height: auto; object-fit: contain; }

/* Responsive logo sizes */
@media (max-width: 768px) {
  .brand-logo { width: 140px; }
  .brand-logo img { max-height: 64px; }
  .menu-toggle { display: inline-flex; }
}

@media (min-width: 1200px) {
  .brand-logo { width: 260px; }
}
.site-nav { display: flex; align-items: center; gap: 32px; }
.site-nav a, .nav-dropdown-toggle { display: inline-flex; align-items: center; min-height: 44px; font-size: .9rem; font-weight: 600; }
.site-nav a:hover, .site-nav a[aria-current="page"], .nav-dropdown-toggle:hover, .nav-dropdown.is-open .nav-dropdown-toggle { color: var(--blue); }
.site-nav .nav-contact { padding: 9px 18px; gap: 19px; border: 1px solid var(--line); border-radius: var(--radius); }
.site-nav .nav-contact:hover, .site-nav .nav-contact[aria-current="page"] { border-color: var(--blue); }
.nav-dropdown { position: relative; }
.nav-dropdown-toggle { gap: 12px; padding: 0; border: 0; background: transparent; color: inherit; cursor: pointer; }
.nav-dropdown-menu { position: absolute; top: calc(100% + 18px); left: 0; display: none; min-width: 235px; padding: 10px; background: white; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 16px 34px rgba(19, 33, 53, .12); }
.nav-dropdown.is-open .nav-dropdown-menu { display: grid; }
.nav-dropdown-menu a { display: flex; align-items: center; min-height: 42px; padding: 6px 12px; border-radius: 4px; color: var(--ink); }
.nav-dropdown-menu a:hover, .nav-dropdown-menu a[aria-current="page"] { background: var(--blue-light); color: var(--blue); }
.menu-toggle { display: none; width: 46px; height: 46px; padding: 11px; background: var(--surface); border-radius: var(--radius); }
.menu-toggle span { display: block; height: 2px; background: var(--ink); margin-block: 6px; transition: transform .2s; }
.menu-toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
.menu-toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }

/* Ana sayfa */
.hero { padding-block: 60px 64px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 52px; }
.hero-copy { padding-block: 15px; }
.hero h1 { font-size: clamp(3rem, 5.15vw, 4.55rem); margin-bottom: 26px; }
.hero-copy > p { max-width: 470px; font-size: 1.0625rem; line-height: 1.8; }
.hero-copy .button { margin-top: 32px; }
.hero-footnote { margin-top: 42px; display: flex; align-items: center; gap: 11px; color: #667185; font-size: .8125rem; }
.hero-footnote svg { width: 18px; height: 18px; color: var(--blue); }
.hero-visual { position: relative; margin: 0; align-self: stretch; min-height: 500px; border-radius: var(--radius); overflow: hidden; background: var(--surface); }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.hero-visual::after { content: ""; position: absolute; inset: 45% 0 0; background: linear-gradient(transparent, rgba(10,24,45,.7)); pointer-events: none; }
.hero-image-label { position: absolute; z-index: 1; inset: auto 26px 31px; color: white; }
.hero-image-label strong { display: block; font-size: 1.65rem; font-weight: 500; line-height: 1.25; letter-spacing: -.035em; }
.hero-image-label small { display: block; margin-top: 15px; color: #e0e7f0; font-size: .75rem; }
.expertise-strip { background: var(--night); color: #f4f7ff; }
.expertise-inner { display: grid; grid-template-columns: repeat(4, 1fr); padding-block: 28px; }
.expertise-inner span { padding-inline: 24px; text-align: center; font-size: .9rem; font-weight: 500; border-right: 1px solid #354255; }
.expertise-inner span:first-child { padding-left: 0; }
.expertise-inner span:last-child { padding-right: 0; border: 0; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 48px; margin-bottom: 48px; }
.section-heading h2 { font-size: clamp(2.15rem, 3.5vw, 3rem); }
.section-heading .eyebrow { margin-bottom: 19px; }
.section-heading > p { max-width: 380px; padding-bottom: 4px; }
.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.service-card { position: relative; padding: 30px; min-height: 230px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: background .2s; }
.service-card:hover { background: var(--blue-light); }
.service-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 25px; }
.service-number { color: var(--blue); font-size: .875rem; font-weight: 650; }
.service-card .arrow { color: #8b96a6; transition: transform .2s, color .2s; }
.service-card:hover .arrow { transform: translate(2px,-2px); color: var(--blue); }
.service-card h3 { font-size: 1.25rem; line-height: 1.35; letter-spacing: -.025em; margin-bottom: 11px; }
.service-card p { font-size: .9375rem; line-height: 1.7; }
.section-end { margin-top: 24px; text-align: right; }
.about-section { background: var(--surface); }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 90px; }
.about-grid h2 { font-size: clamp(2.4rem, 3.7vw, 3.2rem); }
.about-copy > p { font-size: 1.0625rem; margin-bottom: 24px; }
.about-copy > p + p { font-size: 1rem; }
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.process-step { padding-top: 26px; border-top: 1px solid var(--line); }
.process-number { display: block; color: var(--blue); font-size: .875rem; font-weight: 600; margin-bottom: 27px; }
.process-step h3 { font-size: 1.125rem; margin-bottom: 12px; }
.process-step p { font-size: .9375rem; }
.cta { background: var(--blue); padding-block: 55px; }
.cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 38px; }
.cta h2 { color: white; font-size: clamp(1.8rem, 3vw, 2.5rem); letter-spacing: -.035em; }
.cta p { color: #e6eeff; margin-top: 14px; max-width: 640px; }
.cta .button { flex-shrink: 0; }

/* Ortak alt bilgi */
.site-footer { background: var(--night); color: white; padding-block: 51px 24px; }
.site-footer :focus-visible, .cta :focus-visible { outline-color: #ffffff; }
.footer-main { display: flex; align-items: start; justify-content: space-between; gap: 40px; padding-bottom: 36px; }
.footer-brand .brand-word b { color: #7e9cff; }
.footer-brand p { color: #a9b6ca; max-width: 300px; margin-top: 20px; font-size: .875rem; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 26px; padding-top: 9px; }
.footer-nav a { display: inline-flex; align-items: center; min-height: 44px; font-size: .875rem; color: #d5dfef; }
.footer-nav a:hover { color: white; text-decoration: underline; text-underline-offset: 5px; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid #304059; color: #a9b6ca; font-size: .8125rem; }

/* İç sayfalar */
.page-hero { background: var(--surface); padding-block: 60px 76px; }
.breadcrumb { list-style: none; display: flex; flex-wrap: wrap; gap: 12px; color: var(--muted); font-size: .8125rem; margin-bottom: 42px; }
.breadcrumb a:hover { color: var(--blue); }
.breadcrumb li + li::before { content: "/"; color: #7e8896; margin-right: 12px; }
.page-hero h1 { font-size: clamp(2.9rem, 5vw, 4.4rem); max-width: 850px; }
.page-hero .lead { font-size: 1.0625rem; max-width: 660px; margin-top: 28px; line-height: 1.85; }
.page-hero .eyebrow { margin-bottom: 24px; }
.corporate-grid { display: grid; grid-template-columns: .85fr 1.15fr; gap: 85px; }
.corporate-grid h2 { font-size: clamp(2rem, 3vw, 2.8rem); }
.prose > p + p { margin-top: 22px; }
.prose p { font-size: 1.0625rem; line-height: 1.85; }
.principles { background: var(--surface); }
.principle-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 36px; }
.principle { border-top: 2px solid var(--blue); padding-top: 28px; }
.principle h3 { font-size: 1.35rem; margin-bottom: 15px; letter-spacing: -.025em; }
.principle p { font-size: .9375rem; }
.scope-banner { display: flex; align-items: center; flex-wrap: wrap; gap: 0; margin-top: 38px; }
.scope-banner span { padding: 0 19px; font-size: .875rem; border-left: 1px solid #ccd4df; }
.scope-banner span:first-child { padding-left: 0; border: 0; }
.services-layout { display: grid; grid-template-columns: 290px 1fr; gap: 64px; align-items: start; }
.services-intro { position: sticky; top: 125px; }
.services-intro h2 { font-size: 1.875rem; margin-bottom: 20px; }
.services-intro p { font-size: .9375rem; }
.service-seo-copy { margin-top: 58px; padding-top: 54px; border-top: 1px solid var(--line); }
.service-seo-copy h2 { max-width: 700px; margin-bottom: 22px; }
.service-seo-copy h3 { margin-top: 30px; margin-bottom: 14px; font-size: 1.25rem; }
.service-seo-copy ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px 28px; margin-top: 16px; padding-left: 20px; }
.service-seo-copy li::marker { color: var(--blue); }
.page-section-card h2 { margin-top: 22px; margin-bottom: 8px; }
.page-section-card p { margin-top: 10px; }

/* Reduce spacing between H2 headings and their following description paragraphs
  and add a visual style for highlighted keywords */
.page-section-card h2, .service-detail summary h2 { margin-top: 22px; margin-bottom: 8px; }
.page-section-card p, .service-detail .detail-body > p { margin-top: 10px; }
.kw, strong.kw { font-weight: 700; color: var(--night); }
.service-details { border-top: 1px solid var(--line); }
.service-detail { border-bottom: 1px solid var(--line); scroll-margin-top: 115px; }
.service-detail summary { display: flex; align-items: center; gap: 22px; padding: 26px 0; list-style: none; }
.service-detail summary::-webkit-details-marker { display: none; }
.service-detail summary h2 { flex: 1; font-size: 1.3rem; line-height: 1.45; letter-spacing: -.025em; }
.service-detail summary:hover h2, .service-detail[open] summary h2 { color: var(--blue); }
.detail-toggle { display: grid; place-items: center; width: 31px; height: 31px; flex-shrink: 0; border-radius: 50%; background: var(--surface); font-size: 1.375rem; font-weight: 400; line-height: 1; }
.service-detail[open] .detail-toggle { background: var(--blue-light); color: var(--blue); transform: rotate(45deg); }
.detail-body { padding: 0 45px 30px; }
.detail-body > p { margin-bottom: 19px; }
.detail-body ul { list-style: none; display: grid; grid-template-columns: 1fr; gap: 14px 0; }

.detail-body li { padding: 14px 0; border-top: 1px solid var(--line); }
.detail-body li:first-child { border-top: 0; padding-top: 0; }
.detail-body li h3 { font-size: 1.0625rem; margin: 0 0 8px 0; font-weight: 600; color: var(--ink); }
.detail-body li p { margin: 0; color: var(--muted); }
.detail-body li { display: flex; gap: 11px; align-items: baseline; color: var(--ink); font-size: .9375rem; }
.detail-body li::before { content: ""; display: block; width: 5px; height: 5px; flex-shrink: 0; background: var(--blue); transform: translateY(-2px); }
.service-note { padding: 20px 24px; background: var(--surface); font-size: .875rem; margin-top: 30px; }

/* Referanslar / Galeri */
.refs-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.ref-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 14px; background: white; box-shadow: 0 12px 34px rgba(16,34,58,.07); transition: transform .2s, box-shadow .2s, border-color .2s; }
.ref-card:hover { border-color: #b8caff; box-shadow: 0 20px 42px rgba(16,34,58,.12); transform: translateY(-4px); }
.ref-card-media { position: relative; display: block; overflow: hidden; background: var(--surface); }
.ref-card-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(13,27,45,.16), transparent 45%); pointer-events: none; }
.ref-card-media img { width: 100%; height: 245px; object-fit: cover; transition: transform .35s; }
.ref-card:hover .ref-card-media img { transform: scale(1.035); }
.ref-card-index { position: absolute; z-index: 1; top: 18px; left: 18px; display: grid; place-items: center; width: 38px; height: 38px; border: 1px solid rgba(255,255,255,.65); border-radius: 50%; background: rgba(13,27,45,.55); color: white; font-size: .8rem; font-weight: 700; }
.ref-card-body { padding: 25px 26px 27px; }
.ref-card-kicker { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 12px; color: var(--blue); font-size: .75rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.ref-card-kicker span { color: var(--muted); letter-spacing: .02em; }
.ref-card h3 { margin-bottom: 11px; font-size: 1.45rem; line-height: 1.25; letter-spacing: -.035em; }
.ref-card h3 a:hover { color: var(--blue); }
.ref-card-body > p { min-height: 54px; font-size: .95rem; line-height: 1.7; }
.ref-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 19px; }
.ref-tags span { padding: 5px 10px; border-radius: 999px; background: var(--blue-light); color: var(--blue); font-size: .72rem; font-weight: 650; }
.ref-card .text-link { margin-top: 19px; }
.ref-card-featured { grid-column: 1 / -1; display: grid; grid-template-columns: minmax(0, 1.18fr) minmax(300px, .82fr); }
.ref-card-featured .ref-card-media img { height: 100%; min-height: 330px; }
.ref-card-featured .ref-card-body { display: flex; flex-direction: column; justify-content: center; padding: 38px 42px; }
.ref-card-featured h3 { font-size: clamp(1.7rem, 3vw, 2.35rem); }
.ref-card-featured .ref-card-body > p { min-height: 0; max-width: 440px; font-size: 1rem; }
.ref-meta { font-size: .9375rem; color: var(--muted); }
.ref-gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.ref-gallery button { padding: 0; border: 0; overflow: hidden; border-radius: 8px; background: var(--surface); }
.ref-gallery img { width: 100%; height: 150px; object-fit: cover; cursor: zoom-in; transition: transform .25s; }
.ref-gallery button:hover img { transform: scale(1.04); }
.lightbox { position: fixed; inset: 0; display: none; align-items: center; justify-content: center; background: rgba(10,24,45,.8); z-index: 120; }
.lightbox.is-open { display: flex; }
.lightbox-inner { position: relative; display: flex; flex-direction: column; align-items: center; gap: 12px; width: min(1000px, 92vw); }
.lightbox img { max-width: 92%; max-height: 86%; border-radius: 6px; box-shadow: 0 20px 40px rgba(0,0,0,.5); }
.lightbox-caption { color: white; font-size: .9rem; text-align: center; }
.lightbox-close { position: absolute; top: -42px; right: 0; width: 36px; height: 36px; border-radius: 50%; background: white; color: var(--ink); font-size: 1.35rem; line-height: 1; }
.project-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; margin: 27px 0; }
.project-fact { padding: 15px 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.project-fact small { display: block; margin-bottom: 4px; color: var(--muted); font-size: .72rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.project-fact strong { display: block; color: var(--ink); font-size: .95rem; line-height: 1.4; }
.project-copy .project-scope { display: grid; gap: 10px; list-style: none; padding: 0; }
.project-copy .project-scope li { display: flex; gap: 10px; align-items: baseline; color: var(--muted); }
.project-copy .project-scope li::before { content: ""; width: 6px; height: 6px; flex: 0 0 6px; transform: translateY(-1px); border-radius: 50%; background: var(--blue); }


/* İletişim — kanallar config.js dosyasından doldurulur. */
.contact-layout { display: grid; grid-template-columns: .9fr 1.1fr; gap: 86px; }
.contact-copy h1 { font-size: clamp(3rem, 4.8vw, 4.2rem); margin-bottom: 27px; }
.contact-copy > p { font-size: 1.0625rem; max-width: 400px; }
.contact-channels { margin-top: 42px; }
.contact-channel { padding-block: 20px; border-top: 1px solid var(--line); }
.contact-channel:last-child { border-bottom: 1px solid var(--line); }
.contact-channel h2 { color: var(--muted); font-size: .8125rem; font-weight: 500; letter-spacing: .01em; line-height: 1.5; margin-bottom: 8px; }
.contact-channel a, .contact-channel [data-contact="address"] { font-size: 1.0625rem; font-weight: 500; overflow-wrap: anywhere; white-space: pre-line; }
.contact-channel a:hover { color: var(--blue); }
.contact-channel [data-contact-empty] { color: var(--muted); font-size: .9375rem; }
.contact-panel { padding: 40px; background: var(--surface); border-top: 3px solid var(--blue); align-self: start; }
.contact-panel h2 { font-size: 1.75rem; margin-bottom: 20px; }
.contact-panel p { font-size: .9375rem; }
.contact-checklist { list-style: none; margin-top: 28px; }
.contact-checklist li { display: flex; gap: 18px; padding-block: 19px; border-top: 1px solid var(--line); }
.contact-checklist span { color: var(--blue); font-size: .8125rem; padding-top: 3px; }
.contact-checklist strong { display: block; font-size: .9375rem; font-weight: 600; margin-bottom: 5px; }
.contact-checklist p { font-size: .875rem; }
.pending-note { border-top: 1px solid var(--line); margin-top: 4px; padding-top: 20px; }
.field-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 19px; }
.field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 19px; }
.field label { font-size: .875rem; font-weight: 500; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 12px; border: 1px solid #cbd4e1; border-radius: var(--radius); background: white; line-height: 1.5; }
.field textarea { resize: vertical; min-height: 135px; }
.field input:focus, .field select:focus, .field textarea:focus { border-color: var(--blue); }
.form-intro { margin-bottom: 25px; }
.form-note { margin-top: 15px; font-size: .8125rem !important; }
.form-status { margin-top: 18px; font-size: .875rem; color: var(--ink); }

/* Ekran boyutları */
@media (min-width: 1500px) {
  .hero-grid { gap: 65px; }
  .hero-visual { min-height: 540px; }
}
@media (max-width: 1000px) {
  .brand-caption { display: none; }
  .site-nav { gap: 23px; }
  .hero-grid { gap: 30px; }
  .hero-visual { min-height: 470px; }
  .hero h1 { font-size: clamp(2.8rem, 5.5vw, 3.9rem); }
  .hero-copy > p { font-size: 1rem; }
  .service-card { padding: 25px; }
  .about-grid, .corporate-grid { gap: 45px; }
  .services-layout { grid-template-columns: 220px 1fr; gap: 35px; }
  .contact-layout { gap: 42px; }
  .contact-panel { padding: 28px; }
}
@media (max-width: 760px) {
  html { scroll-padding-top: 90px; }
  .header-inner { min-height: 76px; flex-wrap: wrap; gap: 0; }
  .brand-word { font-size: 2.5rem; }
  .brand-caption { display: block; font-size: .75rem; }
  .menu-toggle:not([hidden]) { display: block; }
  .site-nav { width: 100%; flex-direction: column; align-items: stretch; gap: 0; padding: 12px 0 20px; }
  .site-nav.has-toggle { display: none; }
  .site-nav.has-toggle.is-open { display: flex; }
  .site-nav a, .nav-dropdown-toggle { padding: 12px 4px; }
  .nav-dropdown { width: 100%; }
  .nav-dropdown-menu { position: static; display: none; min-width: 0; padding: 8px 0 0; border: 0; box-shadow: none; background: transparent; }
  .nav-dropdown.is-open .nav-dropdown-menu { display: grid; }
  .site-nav .nav-contact { justify-content: space-between; padding-inline: 15px; margin-top: 7px; }
  .hero { padding-block: 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 34px; }
  .hero-copy { padding: 0; }
  .hero h1 { font-size: clamp(2.65rem, 8.8vw, 4.25rem); max-width: 550px; }
  .hero-copy > p { max-width: 540px; }
  .hero-footnote { margin-top: 26px; }
  .hero-visual { min-height: 0; aspect-ratio: 1.3; }
  .hero-image-label { inset: auto 22px 24px; }
  .hero-image-label strong { font-size: 1.5rem; }
  .expertise-inner { grid-template-columns: 1fr 1fr; gap: 18px 0; padding-block: 24px; }
  .expertise-inner span { font-size: .8125rem; padding-inline: 12px; }
  .expertise-inner span:nth-child(even) { border: 0; }
  .expertise-inner span:nth-child(odd) { padding-left: 0; }
  .section-heading { flex-direction: column; align-items: start; gap: 22px; margin-bottom: 33px; }
  .section-heading > p { max-width: 550px; }
  .service-grid { grid-template-columns: 1fr 1fr; }
  .service-card { min-height: 225px; padding: 24px; }
  .service-card h3 { font-size: 1.1875rem; }
  .about-grid, .corporate-grid { grid-template-columns: 1fr; gap: 32px; }
  .process-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .process-number { margin-bottom: 18px; }
  .cta-inner { align-items: start; flex-direction: column; gap: 27px; }
  .footer-main { flex-direction: column; gap: 25px; }
  .footer-nav { gap: 21px; padding: 0; }
  .footer-bottom { flex-direction: column; gap: 5px; }
  .page-hero { padding-block: 36px 53px; }
  .page-hero h1 { font-size: clamp(2.55rem, 7.6vw, 3.8rem); }
  .breadcrumb { margin-bottom: 30px; }
  .principle-grid { grid-template-columns: 1fr; gap: 30px; }
  .principle { padding-top: 22px; }
  .services-layout { grid-template-columns: 1fr; gap: 30px; }
  .services-intro { position: static; }
  .service-seo-copy { margin-top: 42px; padding-top: 38px; }
  .service-seo-copy ul { grid-template-columns: 1fr; }
  .service-detail { scroll-margin-top: 100px; }
  .service-detail summary { gap: 17px; padding-block: 23px; }
  .service-detail summary h2 { font-size: 1.1875rem; }
  .detail-body { padding: 0 0 26px 36px; }
  .contact-layout { grid-template-columns: 1fr; gap: 42px; }
  .contact-copy h1 { font-size: clamp(2.75rem, 8vw, 4rem); }
  .contact-channels { margin-top: 30px; }
}
@media (max-width: 480px) {
  .brand-caption { font-size: .75rem; padding-left: 13px; }
  .brand { gap: 13px; }
  .eyebrow { font-size: .75rem; letter-spacing: .07em; }
  .hero .eyebrow { gap: 9px; }
  .hero h1 { font-size: clamp(2.45rem, 10.1vw, 3rem); }
  .hero-copy .button { width: 100%; justify-content: space-between; }
  .hero-footnote { font-size: .75rem; }
  .hero-visual { aspect-ratio: 1.05; }
  .expertise-inner span { font-size: .75rem; }
  .service-grid { grid-template-columns: 1fr; }
  .service-card { min-height: 0; padding: 24px; }
  .service-card-top { margin-bottom: 17px; }
  .process-grid { gap: 28px 20px; }
  .process-step h3 { font-size: 1.0625rem; }
  .process-step p { font-size: .875rem; }
  .scope-banner { gap: 14px 0; }
  .scope-banner span { padding-inline: 12px; font-size: .8125rem; }
  .scope-banner span:nth-child(3) { border: 0; padding-left: 0; }
  .scope-banner span:nth-child(3)::before { content: ""; }
  .scope-banner { display: grid; grid-template-columns: auto auto; justify-content: start; }
  .detail-body ul { grid-template-columns: 1fr; }
  .contact-panel { padding: 26px 22px; }
  .field-grid { grid-template-columns: 1fr; gap: 0; }
  .cta .button { width: 100%; justify-content: space-between; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Zeon refresh — daha tutarlı kurumsal görünüm ve tablet menüsü */
:root {
  --ink: #10223a;
  --muted: #536277;
  --blue: #225be8;
  --blue-dark: #1748c8;
  --blue-light: #eef3ff;
  --surface: #f5f7fa;
  --line: #e0e6ee;
  --night: #0d1b2d;
  --content: 1280px;
  --radius: 10px;
}

html { scroll-padding-top: 100px; }
body { line-height: 1.7; }
.site-header {
  background: rgba(255,255,255,.94);
  box-shadow: 0 5px 24px rgba(16,34,58,.045);
  backdrop-filter: blur(12px);
}
.header-inner { min-height: 84px; }
.brand { gap: 15px; }
.brand-logo {
  width: 190px;
  height: auto;
  overflow: visible;
}
.brand-logo img { width: 100%; height: auto; object-fit: contain; }
.brand-caption { padding-left: 15px; }
.site-nav { gap: clamp(16px, 2vw, 28px); }
.site-nav a, .nav-dropdown-toggle { font-size: .91rem; }
.site-nav .nav-contact {
  padding: 8px 15px;
  border-color: #cfd9e8;
  border-radius: 8px;
}
.nav-dropdown-menu {
  top: calc(100% + 10px);
  border-radius: 12px;
  box-shadow: 0 18px 48px rgba(16,34,58,.16);
}
.button { border-radius: 8px; box-shadow: 0 8px 18px rgba(34,91,232,.15); }
.button.light { box-shadow: none; }
.hero { padding-block: clamp(48px, 6vw, 82px); }
.hero-grid { gap: clamp(34px, 5vw, 70px); }
.hero-copy { max-width: 590px; }
.hero h1 { max-width: 650px; font-size: clamp(3.1rem, 5.4vw, 5.05rem); }
.hero-copy > p { max-width: 540px; }
.hero-visual {
  min-height: 520px;
  border-radius: 18px;
  box-shadow: 0 24px 60px rgba(16,34,58,.15);
}
.hero-visual img { transform: scale(1.01); }
.expertise-strip { background: linear-gradient(105deg, #10223a, #17365a); }
.service-grid {
  gap: 16px;
  border: 0;
}
.service-card {
  min-height: 225px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(16,34,58,.035);
}
.service-card:hover {
  background: #f8faff;
  border-color: #b8caff;
  box-shadow: 0 16px 34px rgba(16,34,58,.09);
  transform: translateY(-3px);
}
.about-section { background: linear-gradient(115deg, #f5f7fa, #eef3fa); }
.process-step { border-color: #cbd5e2; }
.cta { background: linear-gradient(110deg, #1848c8, #2868f0); }
.site-footer { padding-top: 58px; }
.footer-brand .brand-logo {
  display: inline-block;
  width: 176px;
  height: auto;
  padding: 0;
  border-radius: 0;
  background: transparent;
}
.footer-brand .brand-logo img { filter: brightness(0) invert(1); opacity: .94; }
.page-hero {
  background:
    radial-gradient(ellipse at 88% 10%, rgba(34,91,232,.09), transparent 35%),
    linear-gradient(120deg, #f5f7fa, #edf2f8);
}
.page-hero h1 { max-width: 900px; }
.breadcrumb { margin-bottom: 34px; }
.principle { border-top-width: 3px; }
.ref-card, .contact-panel {
  border-radius: 14px;
  box-shadow: 0 12px 34px rgba(16,34,58,.07);
}
.ref-card { overflow: hidden; }
.ref-card img { border-radius: 8px; }
.contact-panel { border-top: 0; border-left: 4px solid var(--blue); }
.contact-channel { padding-block: 23px; }
.contact-channel a { color: var(--ink); }
.contact-channel a:hover { color: var(--blue); }
.field input, .field select, .field textarea { border-radius: 8px; }
.field input:focus, .field select:focus, .field textarea:focus {
  outline: 3px solid rgba(34,91,232,.14);
  outline-offset: 1px;
}
.project-visual {
  margin: 0;
  overflow: hidden;
  border-radius: 16px;
  background: var(--surface);
  box-shadow: 0 18px 42px rgba(16,34,58,.12);
}
.project-visual img { width: 100%; aspect-ratio: 16 / 10; object-fit: cover; }
.project-visual figcaption { padding: 12px 16px; color: var(--muted); font-size: .82rem; }
.project-layout { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: 46px; align-items: start; }
.project-copy h2 { margin-bottom: 14px; font-size: clamp(1.8rem, 3vw, 2.4rem); }
.project-copy h3 { margin-top: 28px; margin-bottom: 12px; font-size: 1.1rem; }
.project-copy ul { display: grid; gap: 10px; padding-left: 1.2rem; color: var(--muted); }
.project-feature {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr);
  align-items: center;
  gap: clamp(32px, 6vw, 76px);
}
.project-feature-copy h2 { max-width: 560px; margin-bottom: 20px; font-size: clamp(2.2rem, 4vw, 3.25rem); }
.project-feature-copy > p { max-width: 530px; margin-bottom: 20px; font-size: 1.05rem; }
.ref-image-note { color: var(--muted); font-size: .8rem; }
.service-list-links { list-style: none; margin-top: 22px; }
.service-list-links li { border-top: 1px solid var(--line); }
.service-list-links a { display: block; padding: 12px 0; color: var(--blue); }
.service-list-links a:hover { text-decoration: underline; text-underline-offset: 4px; }

@media (max-width: 960px) {
  html { scroll-padding-top: 86px; }
  .header-inner { min-height: 76px; flex-wrap: wrap; gap: 0; }
  .brand-logo { width: 164px; height: auto; }
  .brand-caption { display: none; }
  .menu-toggle:not([hidden]) { display: block; }
  .site-nav {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 10px 0 18px;
  }
  .site-nav.has-toggle { display: none; }
  .site-nav.has-toggle.is-open { display: flex; }
  .site-nav a, .nav-dropdown-toggle { padding: 11px 4px; }
  .nav-dropdown { width: 100%; }
  .nav-dropdown-menu {
    position: static;
    min-width: 0;
    padding: 6px 0 5px 12px;
    border: 0;
    box-shadow: none;
    background: transparent;
  }
  .nav-dropdown.is-open .nav-dropdown-menu { display: grid; }
  .nav-dropdown-menu a { min-height: 40px; }
  .site-nav .nav-contact { justify-content: space-between; margin-top: 7px; }
  .hero-visual { min-height: 440px; }
}
@media (max-width: 760px) {
  .brand-logo { width: 150px; height: auto; }
  .hero-visual { min-height: 0; }
  .service-card { border-radius: 10px; }
  .footer-brand .brand-logo { width: 160px; height: auto; }
  .project-layout { grid-template-columns: 1fr; gap: 30px; }
  .project-feature { grid-template-columns: 1fr; gap: 30px; }
  .refs-grid { grid-template-columns: 1fr; }
  .ref-card-featured { grid-column: auto; display: block; }
  .ref-card-featured .ref-card-media img { min-height: 0; height: 250px; }
  .ref-card-featured .ref-card-body { padding: 25px 26px 27px; }
  .project-facts { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .brand-logo { width: 142px; height: auto; }
  .hero-visual { border-radius: 14px; }
  .ref-gallery { grid-template-columns: repeat(2, 1fr); }
  .ref-gallery img { height: 110px; }
  .project-facts { grid-template-columns: 1fr; }
}