element.style {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}
.overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 2;
}
*, ::after, ::before {
    box-sizing: border-box;
}
user agent stylesheet
div {
    display: block;
    unicode-bidi: isolate;
}
body {
    background: #f5f7fa;
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
    color: #212529;
}
body {
    margin: 0;
    font-family: var(--bs-body-font-family);
    font-size: var(--bs-body-font-size);
    font-weight: var(--bs-body-font-weight);
    line-height: var(--bs-body-line-height);
    color: var(--bs-body-color);
    text-align: var(--bs-body-text-align);
    background-color: var(--bs-body-bg);
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}
:root {
    --bs-breakpoint-xs: 0;
    --bs-breakpoint-sm: 576px;
    --bs-breakpoint-md: 768px;
    --bs-breakpoint-lg: 992px;
    --bs-breakpoint-xl: 1200px;
    --bs-breakpoint-xxl: 1400px;
}
:root, [data-bs-theme=light] {
    --bs-blue: #0d6efd;
    --bs-indigo: #6610f2;
    --bs-purple: #6f42c1;
    --bs-pink: #d63384;
    --bs-red: #dc3545;
    --bs-orange: #fd7e14;
    --bs-yellow: #ffc107;
    --bs-green: #198754;
    --bs-teal: #20c997;
    --bs-cyan: #0dcaf0;
    --bs-black: #000;
    --bs-white: #fff;
    --bs-gray: #6c757d;
    --bs-gray-dark: #343a40;
    --bs-gray-100: #f8f9fa;
    --bs-gray-200: #e9ecef;
    --bs-gray-300: #dee2e6;
    --bs-gray-400: #ced4da;
    --bs-gray-500: #adb5bd;
    --bs-gray-600: #6c757d;
    --bs-gray-700: #495057;
    --bs-gray-800: #343a40;
    --bs-gray-900: #212529;
    --bs-primary: #0d6efd;
    --bs-secondary: #6c757d;
    --bs-success: #198754;
    --bs-info: #0dcaf0;
    --bs-warning: #ffc107;
    --bs-danger: #dc3545;
    --bs-light: #f8f9fa;
    --bs-dark: #212529;
    --bs-primary-rgb: 13, 110, 253;
    --bs-secondary-rgb: 108, 117, 125;
    --bs-success-rgb: 25, 135, 84;
    --bs-info-rgb: 13, 202, 240;
    --bs-warning-rgb: 255, 193, 7;
    --bs-danger-rgb: 220, 53, 69;
    --bs-light-rgb: 248, 249, 250;
    --bs-dark-rgb: 33, 37, 41;
    --bs-primary-text-emphasis: #052c65;
    --bs-secondary-text-emphasis: #2b2f32;
    --bs-success-text-emphasis: #0a3622;
    --bs-info-text-emphasis: #055160;
    --bs-warning-text-emphasis: #664d03;
    --bs-danger-text-emphasis: #58151c;
    --bs-light-text-emphasis: #495057;
    --bs-dark-text-emphasis: #495057;
    --bs-primary-bg-subtle: #cfe2ff;
    --bs-secondary-bg-subtle: #e2e3e5;
    --bs-success-bg-subtle: #d1e7dd;
}

@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;500;700;900&display=swap');

/* IST Kesintisiz Güç site styles */
:root {
    --ink: #000000;
    --navy: #0e0e0e;
    --navy-deep: #0e0e0e;
    --blue: #881b1e;
    --cyan: #881b1e;
    --muted: #64748b;
    --line: #dce3ea;
    --surface: #ffffff;
    --soft: #f4f7fa;
    --success: #198f5b;
}

html { scroll-behavior: smooth; }
body { background: var(--soft); color: #000; font-family: "Roboto", Arial, sans-serif; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }

.site-header {
    position: sticky; top: 0; z-index: 20;
    background: #fff; color: #000;
    box-shadow: none;
}
.nav-wrap, .container { width: min(1280px, calc(100% - 48px)); margin: 0 auto; }
.nav-wrap { min-height: 154px; display: flex; align-items: center; justify-content: flex-end; gap: 36px; }
.logo-container {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 42;
  display: flex;
  align-items: flex-start;
  width: 440px;
  height: 154px;
  border-radius: 0 0 70px 0;
  overflow: hidden;
}

.logo-container::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: linear-gradient(
    135deg,
rgba(255, 255, 255, 0.35) 0%,
rgba(255, 255, 255, 0.85) 25%,
rgba(220, 80, 80, 0.75) 65%,
rgba(136, 27, 30, 0.95) 100%
  );
  pointer-events: none;
}
.brand { position: relative; z-index: 1; display: inline-flex; align-items: center; }
.brand-logo { display: block; width: 440px; height: auto; max-width: 100%; object-fit: contain; }
.nav-toggle { display: none; background: transparent; border: 1px solid var(--blue); color: #000; border-radius: 6px; padding: 8px 11px; cursor: pointer; }
.main-nav { display: flex; align-items: center; gap: 34px; }
.main-nav > a, .drop-toggle { color: var(--blue); font-weight: 600; padding: 58px 0; white-space: nowrap; }
.drop { position: relative; }
.drop-toggle { border: 0; background: transparent; cursor: pointer; }
.drop-toggle::after { content: "▾"; margin-left: 7px; font-size: 11px; }
.dropdown {
    position: absolute; top: calc(100% - 18px); left: 50%; transform: translateX(-50%);
    display: none; min-width: 240px; padding: 8px 0; background: #fff; border-radius: 5px;
    box-shadow: 0 9px 25px rgba(15,23,42,.23); color: #27323d;
}
.drop:hover .dropdown, .drop.open .dropdown { display: block; }
.dropdown a { display: block; padding: 9px 16px; }
.dropdown a:hover { background: #f7e8e9; color: var(--blue); }

.crumbs { background: #fff; border-bottom: 1px solid #dce2e8; padding: 19px 0; color: var(--blue); font-size: 14px; }
.crumbs span { color: #95a0ad; margin: 0 10px; }
.page { min-height: 580px; padding: 68px 0 82px; }
.section-title { margin: 0 0 42px; text-align: center; font-size: clamp(2rem, 4vw, 2.8rem); line-height: 1.12; }
.section-lead {  max-width: 760px; margin: -25px auto 38px; color: var(--muted); text-align: center; margin-top: 20px}

.hero {
    min-height: 570px; display: grid; place-items: center; text-align: center; color: #fff;
    background: linear-gradient(115deg, rgba(14,14,14,.94), rgba(136,27,30,.72)), 
      radial-gradient(circle at 50% 25%, #5c292b 0, #241416 48%, #0e0e0e 100%);
}
.home-media-stage { position: relative; isolation: isolate; overflow: hidden; }
.home-background-video { position: absolute; inset: 0; z-index: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; }
.home-media-stage::after { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: transparent; }
.home-media-stage .site-header,
.home-media-stage .hero { position: relative; z-index: 10; }
.home-media-stage .site-header { z-index: 40; background: transparent; box-shadow: none; pointer-events: auto; }
.home-media-stage .nav-toggle,
.home-media-stage .main-nav,
.home-media-stage .main-nav a,
.home-media-stage .drop-toggle { position: relative; z-index: 41; pointer-events: auto; }
.home-media-stage .hero { background: transparent; }
.hero-inner { max-width: 760px; padding: 60px 0; }
.hero h1 { margin: 0 0 16px; font-size: clamp(2.3rem, 5vw, 4rem); }
.hero p { margin: 0 auto 30px; font-size: 1.08rem; color: #d9e8f5; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: 8px; padding: 11px 22px; border: 1px solid var(--blue); border-radius: 5px; background: var(--blue); color: #fff; cursor: pointer; transition: .2s; }
.btn:hover { transform: translateY(-2px); filter: brightness(1.08); }
.btn-outline { background: transparent; color: var(--blue); }
.btn-green { background: var(--blue); border-color: var(--blue); width: 100%; }

.intro { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 56px; padding: 80px 0; }
.intro h2 { margin: 0 0 14px; font-size: clamp(1.9rem, 4vw, 2.7rem); }
.intro p { color: var(--muted); line-height: 1.7; }
.home-slider { position: relative; width: 100%; overflow: hidden; border-radius: 14px; background: #e9eef3; transition: aspect-ratio .25s ease; }
.home-slider-media, .home-slide, .home-slide img, .home-slide video { width: 100%; height: 100%; }
.home-slider-media { position: absolute; inset: 0; }
.home-slide { position: absolute; inset: 0; opacity: 0; pointer-events: none; transition: opacity .45s ease; }
.home-slide.is-active { opacity: 1; pointer-events: auto; }
.home-slide img, .home-slide video { display: block; object-fit: contain; background: #fff; }
.home-slider-arrow { position: absolute; top: 50%; z-index: 2; width: 40px; height: 40px; border: 0; border-radius: 50%; transform: translateY(-50%); background: rgba(255,255,255,.9); color: var(--blue); font-size: 2rem; cursor: pointer; }
.home-slider-arrow.previous { left: 14px; }.home-slider-arrow.next { right: 14px; }
.home-slider-dots { position: absolute; z-index: 2; bottom: 14px; left: 50%; display: flex; gap: 8px; transform: translateX(-50%); }
.home-slider.is-video-active .home-slider-dots { display: none; }
.home-slider-dots button { width: 9px; height: 9px; padding: 0; border: 1px solid #fff; border-radius: 50%; background: rgba(255,255,255,.55); cursor: pointer; }
.home-slider-dots button.is-active { background: #fff; }
.document-page { max-width: 940px; }
.document-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 0 0 28px; }
.document-content { padding: clamp(22px, 5vw, 54px); background: #fff; border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 22px rgba(24,39,56,.06); overflow-wrap: anywhere; }
.document-content p { line-height: 1.75; }.document-content .document-heading { margin-top: 2rem; font-weight: 700; font-size: 1.3rem; color: var(--blue); }
.document-content table { width: 100%; margin: 1.5rem 0; border-collapse: collapse; }.document-content td { padding: 10px; border: 1px solid var(--line); vertical-align: top; }
.document-figure { display: grid; place-items: center; margin: 1.5rem 0; }
.document-figure img { display: block; width: auto; height: auto; max-width: 100%; max-height: 620px; object-fit: contain; }
.document-content--pdf { padding: clamp(12px, 3vw, 28px); }
.document-pdf-pages { display: grid; gap: 24px; }
.document-pdf-page { display: block; min-width: 0; }
.document-pdf-page img { display: block; width: 100%; height: auto; }
.document-pdf-link { margin: 22px 0 0; text-align: center; color: var(--blue); }
.benefits, .product-grid, .service-grid, .contact-grid { display: grid; gap: 22px; }
.benefits { grid-template-columns: repeat(4, 1fr); padding-bottom: 70px; }
.benefit, .card, .contact-card { background: var(--surface); border: 1px solid var(--line); border-radius: 7px; padding: 26px; box-shadow: 0 8px 22px rgba(24,39,56,.06); }
.benefit { text-align: center; }
.benefit-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; margin: 0 auto 14px; color: var(--blue); background: #edf4ff; font-size: 20px; }
.benefit h3 { font-size: 1rem; margin: 0 0 9px; }
.benefit p { margin: 0; color: var(--muted); font-size: .9rem; line-height: 1.55; }
.product-grid { grid-template-columns: repeat(4, 1fr); }
.product-card { display: flex; flex-direction: column; min-height: 455px; text-align: center; }
.product-image { height: 210px; display: grid; place-items: center; margin: -3px -5px 23px; border-radius: 5px; background: linear-gradient(145deg, #f8fafc, #e9eef3); color: #3e4d59; font-size: 4.4rem; }
.product-image img { display: block; width: 100%; height: 100%; min-height: 0; padding: 10px; object-fit: contain; }
.product-card h3 { margin: 0 0 10px; font-size: 1.18rem; }
.product-card p { margin: 0 auto 24px; max-width: 180px; color: var(--muted); line-height: 1.5; }
.product-card .btn { margin-top: auto; align-self: center; padding: 7px 13px; }
.service-grid { grid-template-columns: repeat(2, 1fr); }
.service-card h3 { margin: 0 0 10px; }
.service-card p, .service-card li { color: var(--muted); line-height: 1.6; }
.service-card ul { padding-left: 20px; margin: 16px 0 24px; }
.contact-grid { grid-template-columns: .85fr 1.15fr; align-items: stretch; }
.contact-card h2 { margin: 0 0 24px; }
.contact-item { display: grid; grid-template-columns: 42px 1fr; gap: 15px; margin: 18px 0; }
.contact-item b { display: block; margin-bottom: 3px; }
.contact-item span { color: var(--muted); line-height: 1.5; }
.contact-icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 6px; background: #e8f6ee; color: var(--success); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { width: 100%; padding: 13px; border: 1px solid #d4dde6; border-radius: 5px; outline: none; }
.field:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(8,125,245,.12); }
textarea.field { min-height: 130px; resize: vertical; }
.full { grid-column: 1 / -1; }
.map-placeholder { min-height: 360px; margin-top: 25px; border-radius: 7px; display: grid; place-items: center; background: linear-gradient(135deg, #d4e0e5, #eff4f6); color: #5d7180; letter-spacing: .4px; }
.map-placeholder iframe { width: 100%; min-height: 360px; border: 0; border-radius: inherit; }
.section-heading > span { color: #b98384; font-size: .78rem; font-weight: 700; letter-spacing: .11em; text-transform: uppercase; }
.home-section { padding: 58px 0 12px; }
.section-heading { display: flex; align-items: baseline; gap: 18px; margin-bottom: 24px; }
.section-heading h2 { margin: 0; font-size: clamp(1.8rem, 3vw, 2.5rem); }
.section-heading a { margin-left: auto; color: var(--blue); font-weight: 700; }
.home-products-carousel { display: grid; grid-template-columns: 42px minmax(0, 1fr) 42px; align-items: center; gap: 12px; }
.home-product-grid { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; }
.home-product-grid::-webkit-scrollbar { display: none; }
.home-product-grid .product-card { flex: 0 0 calc(25% - 17px); min-height: 360px; padding: 18px; scroll-snap-align: start; }
.home-product-grid .product-image { height: 150px; margin-bottom: 16px; }
.references-section { max-width: none; margin-top: 44px; padding: 58px 0 70px; background: #eceff2; }
.reference-carousel { display: grid; grid-template-columns: 42px minmax(0, 1fr) 42px; align-items: center; gap: 12px; }
.reference-track { display: flex; gap: 18px; overflow-x: auto; scroll-snap-type: x mandatory; scrollbar-width: none; cursor: grab; }
.reference-track::-webkit-scrollbar { display: none; }
.reference-item { flex: 0 0 calc(25% - 14px); min-width: 190px; scroll-snap-align: start; }
.reference-item img { display: block; width: 100%; height: 100px; object-fit: contain; border-radius: 10px; box-shadow: 0 8px 22px rgba(14,14,14,.08); }
.reference-item--dark img { background: #000; }
.reference-gallery { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.reference-gallery .reference-item { min-width: 0; padding: 20px; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; box-shadow: 0 8px 22px rgba(24,39,56,.06); }
.reference-gallery .reference-item img { height: 150px; }
.carousel-arrow { display: grid; place-items: center; width: 42px; height: 42px; border: 0; border-radius: 50%; background: #fff; color: var(--blue); font-size: 2rem; line-height: 1; cursor: pointer; box-shadow: 0 5px 15px rgba(14,14,14,.12); }
.carousel-arrow:hover { background: var(--blue); color: #fff; }
.footer { background: linear-gradient(135deg, #24282d 0%, #454b52 55%, #72787d 100%); color: #f1f3f4; }
.footer-main { display: grid; grid-template-columns: 1.25fr .8fr .8fr 1fr; gap: 35px; padding: 56px 0; }
.footer .brand { min-width: 0; }
.footer .brand-logo { width: 460px; max-width: 100%; max-height: 160px; }
.footer h3 { color: #fff; margin: 0 0 18px; font-size: 1rem; }
.footer a, .footer p { display: block; color: #cbd6e1; margin: 0 0 11px; font-size: .9rem; line-height: 1.55; }
.footer a:hover { color: #fff; }
.footer-bottom { background: rgba(14,14,14,.78); padding: 17px 0; color: #d8dcdf; font-size: .82rem; }
.footer-bottom .container { display: flex; justify-content: space-between; gap: 20px; }
.notice { display: none; margin: 15px 0; padding: 12px; border-radius: 5px; background: #e9f8ef; color: #187143; }

@media (max-width: 900px) {
    .nav-wrap { min-height: 112px; }
    .logo-container { left: 0; width: 280px; height: 112px; }
    .brand-logo { width: 280px; max-width: 100%; }
    .nav-toggle { display: block; }
    .main-nav, .home-media-stage .main-nav {
        display: none; position: absolute !important; top: 100%; left: 15px; right: 15px;
        width: auto; max-width: calc(100vw - 30px); max-height: calc(100vh - 130px);
        overflow-x: hidden; overflow-y: auto; z-index: 100 !important;
        flex-direction: column; align-items: stretch; gap: 0; padding: 8px 24px 16px;
        background: #fff; pointer-events: auto; visibility: hidden; opacity: 0;
        box-sizing: border-box;
    }
    .main-nav.is-open, .home-media-stage .main-nav.is-open { display: flex; visibility: visible; opacity: 1; }
    .main-nav > a, .drop-toggle { width: 100%; padding: 14px 0; text-align: left; }
    .dropdown { position: static; transform: none; min-width: 0; box-shadow: none; }
    .drop:hover .dropdown { display: none; }
    .drop.open .dropdown { display: block; }
    .intro { grid-template-columns: 1fr; }
    .benefits, .product-grid, .reference-gallery { grid-template-columns: repeat(2, 1fr); }
    .home-product-grid .product-card { flex-basis: calc(50% - 11px); }
    .footer-main { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
    .nav-wrap, .container { width: min(100% - 30px, 1180px); }
    .nav-wrap { min-height: 92px; }
    .logo-container { top: 0; left: 0; width: 220px; height: 92px; }
    .brand-logo { width: 220px; max-width: 100%; }
    .main-nav, .home-media-stage .main-nav { top: 100%; }
    .page { padding: 46px 0 58px; }
    .hero { min-height: 500px; padding: 42px 18px; }
    .hero-inner { width: min(100%, 440px); padding: 34px 0 46px; }
    .hero h1 { margin-bottom: 18px; font-size: clamp(2rem, 10vw, 2.8rem); line-height: 1.14; }
    .hero p { margin: 0 auto 28px; font-size: 1rem; line-height: 1.6; max-width: 35ch; }
    .hero .btn { margin-top: 4px; }
    .home-section { padding-top: 42px; }
    .section-heading { flex-wrap: wrap; gap: 8px 14px; }
    .section-heading a { width: 100%; margin-left: 0; }
    .home-products-carousel { grid-template-columns: 32px minmax(0, 1fr) 32px; gap: 7px; }
    .home-product-grid { display: flex; padding-bottom: 10px; }
    .home-product-grid .product-card { flex: 0 0 78%; scroll-snap-align: start; }
    .references-section { margin-top: 25px; }
    .reference-item { flex-basis: 72%; }
    .benefits, .product-grid, .service-grid, .contact-grid, .footer-main, .reference-gallery { grid-template-columns: 1fr; }
    .product-card { min-height: 410px; }
    .form-grid { grid-template-columns: 1fr; }
    .full { grid-column: auto; }
    .footer-bottom .container { flex-direction: column; }
}

#lightning-canvas { position: fixed; inset: 0; z-index: 5; width: 100%; height: 100%; pointer-events: none; }
*, ::after, ::before {
    box-sizing: border-box;
}
*, ::after, ::before {
    box-sizing: border-box;
}