:root {
    --est-ink: #04121f;
    --est-navy: #071e33;
    --est-navy-2: #0a2440;
    --est-blue: #0b6fa4;
    --est-blue-ink: #1c7fa6;
    --est-cyan: #35d6ff;
    --est-cyan-soft: #a7ecff;
    --est-paper: #f4f7f9;
    --est-surface: #e9eff3;
    --est-line: rgba(5, 36, 62, .13);
    --est-line-dark: rgba(255, 255, 255, .12);
    --est-muted: #5a6b7a;
    --est-radius: 3px;
    --est-container: min(1320px, calc(100vw - 80px));
    --est-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    --est-display: "Space Grotesk", "Arial Narrow", Arial, sans-serif;
}

html { scroll-behavior: smooth; }
body.est-managed-site { margin: 0; background: var(--est-paper); }
body.est-menu-open { overflow: hidden; }

.est, .est * { box-sizing: border-box; }
.est { margin: 0; overflow: hidden; color: var(--est-ink); background: var(--est-paper); font-family: "DM Sans", Arial, sans-serif; font-size: 16px; line-height: 1.5; -webkit-font-smoothing: antialiased; }
.est img { display: block; max-width: 100%; }
.est a { color: inherit; text-decoration: none; }
.est button { font: inherit; }
.est h1, .est h2, .est h3, .est p, .est dl, .est dd { margin: 0; }
.est h1, .est h2, .est h3 { font-family: var(--est-display); font-weight: 500; letter-spacing: -.045em; }
.est ul, .est ol { margin: 0; padding: 0; list-style: none; }
.est :focus-visible { outline: 2px solid var(--est-cyan); outline-offset: 3px; }

.est-container { width: var(--est-container); margin-inline: auto; }
.est-section { padding: 118px 0; }
.est-section-label { display: inline-flex; align-items: center; gap: 10px; color: var(--est-blue-ink); font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; }
.est-section-label::before { width: 26px; height: 1px; content: ""; background: currentColor; }
.est-skip { position: fixed; z-index: 9999; top: 8px; left: 8px; padding: 10px 16px; transform: translateY(-150%); background: #fff; color: #000; border-radius: 2px; }
.est-skip:focus { transform: translateY(0); }

.est-section-head { display: grid; grid-template-columns: 1fr minmax(300px, .42fr); align-items: end; gap: 80px; margin-bottom: 66px; }
.est-section-head h2 { margin-top: 22px; font-size: clamp(44px, 4.6vw, 72px); line-height: 1.02; }
.est-section-head h2 em { color: var(--est-blue-ink); font-style: normal; }
.est-section-head > p { color: var(--est-muted); font-size: 17px; line-height: 1.75; }

/* ---------- Üst bilgilendirme ve header ---------- */

.est-notice { min-height: 34px; background: #030e19; color: rgba(255,255,255,.62); font-size: 10px; }
.est-notice .est-container { min-height: 34px; display: flex; align-items: center; gap: 18px; }
.est-notice span { flex: 0 0 auto; color: var(--est-cyan); font-family: var(--est-mono); font-size: 9px; font-weight: 500; letter-spacing: .14em; }
.est-notice p { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.est-header { position: absolute; z-index: 50; top: 34px; left: 0; width: 100%; border-bottom: 1px solid rgba(255,255,255,.14); color: #fff; transition: background .25s ease, box-shadow .25s ease; }
.est-header.is-fixed { position: fixed; top: 0; background: rgba(4, 18, 31, .93); backdrop-filter: blur(18px); box-shadow: 0 12px 40px rgba(0,0,0,.2); }
.est-header__inner { min-height: 92px; display: flex; align-items: center; justify-content: space-between; }
.est-logo { width: 132px; height: 58px; display: grid; place-items: center; overflow: hidden; }
.est-logo img { width: 118px; height: auto; filter: brightness(0) invert(1); }
.est-nav { display: flex; align-items: center; gap: clamp(18px, 2vw, 34px); }
.est-nav > a { position: relative; font-size: 13px; font-weight: 600; }
.est-nav > a:not(.est-nav__cta)::after { position: absolute; right: 0; bottom: -8px; left: 0; height: 1px; content: ""; transform: scaleX(0); transform-origin: right; background: var(--est-cyan); transition: transform .2s ease; }
.est-nav > a:hover::after, .est-nav > a:focus-visible::after { transform: scaleX(1); transform-origin: left; }
.est-nav__lang { color: var(--est-cyan-soft) !important; font-family: var(--est-mono); font-size: 12px !important; }
.est-nav .est-nav__cta { display: inline-flex; align-items: center; gap: 14px; padding: 13px 18px; border: 1px solid rgba(255,255,255,.34); transition: background .2s ease, border-color .2s ease; }
.est-nav .est-nav__cta:hover { border-color: var(--est-cyan); background: rgba(53,214,255,.1); }
.est-nav__cta svg, .est-button svg, .est-text-link svg, .est-service-card > a svg { flex: 0 0 auto; width: 18px; height: 18px; transition: transform .2s ease; }
.est-nav__cta:hover svg, .est-button:hover svg, .est-text-link:hover svg, .est-service-card > a:hover svg { transform: translateX(4px); }
.est-menu-toggle { display: none; position: relative; width: 48px; height: 48px; padding: 12px; border: 1px solid rgba(255,255,255,.25); background: transparent; color: #fff; cursor: pointer; }
.est-menu-toggle span { display: block; width: 100%; height: 1px; margin: 5px 0; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.est-menu-toggle em { position: absolute; overflow: hidden; width: 1px; height: 1px; clip: rect(0 0 0 0); }

/* ---------- Hero ---------- */

.est-hero { position: relative; min-height: min(880px, calc(100vh - 34px)); display: flex; align-items: stretch; isolation: isolate; background: #051c33; color: #fff; }
.est-hero::before { position: absolute; z-index: -3; inset: 0; content: ""; background-image: linear-gradient(90deg, rgba(3,16,29,.96) 0%, rgba(3,16,29,.85) 43%, rgba(3,16,29,.34) 76%, rgba(3,16,29,.66) 100%), var(--est-hero-image); background-size: cover; background-position: center; transform: scale(1.02); }
.est-hero::after { position: absolute; z-index: -1; inset: auto 0 0; height: 220px; content: ""; background: linear-gradient(transparent, #04121f); pointer-events: none; }
.est-hero__grid { position: absolute; z-index: -2; inset: 0; opacity: .13; background-image: linear-gradient(rgba(255,255,255,.16) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.16) 1px, transparent 1px); background-size: 86px 86px; mask-image: linear-gradient(90deg, #000 0%, transparent 76%); }
.est-hero__inner { position: relative; min-height: inherit; display: grid; align-items: center; grid-template-columns: minmax(0, 1.1fr) minmax(340px, .9fr); padding-top: 150px; padding-bottom: 100px; }
.est-hero__content { position: relative; z-index: 3; max-width: 790px; }
.est-eyebrow { display: flex; align-items: center; gap: 12px; margin-bottom: 28px; color: var(--est-cyan-soft); font-family: var(--est-mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; }
.est-eyebrow i { flex: 0 0 auto; width: 7px; height: 7px; border-radius: 50%; background: var(--est-cyan); box-shadow: 0 0 0 6px rgba(53,214,255,.13); }
.est-hero h1 { max-width: 850px; font-size: clamp(56px, 5.6vw, 92px); line-height: .97; letter-spacing: -.062em; }
.est-hero__content > p { max-width: 660px; margin-top: 30px; color: rgba(255,255,255,.74); font-size: clamp(17px, 1.5vw, 20px); line-height: 1.7; }
.est-hero__actions { display: flex; align-items: center; gap: 12px; margin-top: 40px; }

.est-button { min-height: 58px; display: inline-flex; align-items: center; justify-content: center; gap: 20px; padding: 0 26px; border: 1px solid transparent; font-size: 13px; font-weight: 700; cursor: pointer; transition: transform .2s ease, background .2s ease, border-color .2s ease, color .2s ease; }
.est-button:hover { transform: translateY(-2px); }
.est-button--primary { background: var(--est-cyan); color: #021523 !important; }
.est-button--primary:hover { background: #8ceaff; }
.est-button--ghost { border-color: rgba(255,255,255,.32); color: #fff !important; }
.est-button--ghost:hover { border-color: #fff; background: rgba(255,255,255,.08); }

.est-hero__signal { position: relative; width: min(38vw, 480px); aspect-ratio: 1; justify-self: end; opacity: .85; }
.est-signal { position: absolute; inset: 50%; width: 100%; height: 100%; border: 1px solid rgba(91,224,255,.22); border-radius: 50%; transform: translate(-50%,-50%); }
.est-signal::before { position: absolute; top: 50%; left: -4px; width: 7px; height: 7px; content: ""; border-radius: 50%; background: var(--est-cyan); box-shadow: 0 0 22px var(--est-cyan); }
.est-signal--one { animation: estRotate 14s linear infinite; }
.est-signal--two { width: 70%; height: 70%; animation: estRotate 10s linear infinite reverse; }
.est-signal--three { width: 40%; height: 40%; animation: estRotate 7s linear infinite; }
.est-signal__core { position: absolute; top: 50%; left: 50%; display: flex; flex-direction: column; align-items: center; gap: 5px; transform: translate(-50%,-50%); text-align: center; }
.est-signal__core i { width: 12px; height: 12px; margin-bottom: 9px; border: 2px solid #06192d; border-radius: 50%; background: var(--est-cyan); box-shadow: 0 0 0 8px rgba(53,214,255,.14), 0 0 38px var(--est-cyan); }
.est-signal__core strong { font-family: var(--est-mono); font-size: 13px; font-weight: 500; letter-spacing: .06em; }
.est-signal__core span { color: rgba(255,255,255,.55); font-family: var(--est-mono); font-size: 9px; letter-spacing: .16em; }
.est-hero__scroll { position: absolute; z-index: 4; bottom: 40px; left: 26px; display: flex; align-items: center; gap: 15px; transform: rotate(-90deg); transform-origin: left center; color: rgba(255,255,255,.5); font-family: var(--est-mono); font-size: 9px; letter-spacing: .18em; text-transform: uppercase; }
.est-hero__scroll i { display: block; width: 52px; height: 1px; overflow: hidden; background: rgba(255,255,255,.26); }
.est-hero__scroll i::after { display: block; width: 22px; height: 1px; content: ""; background: var(--est-cyan); animation: estScroll 2s ease-in-out infinite; }

/* ---------- Güven rozetleri ---------- */

.est-badges { position: relative; z-index: 3; background: var(--est-ink); color: #fff; }
.est-badges__grid { display: grid; grid-template-columns: repeat(4, 1fr); border-right: 1px solid var(--est-line-dark); border-left: 1px solid var(--est-line-dark); }
.est-badges__grid > div { display: flex; align-items: baseline; gap: 14px; padding: 22px 28px; border-right: 1px solid var(--est-line-dark); }
.est-badges__grid > div:last-child { border-right: 0; }
.est-badges strong { flex: 0 0 auto; color: var(--est-cyan-soft); font-family: var(--est-mono); font-size: 12px; font-weight: 500; letter-spacing: .04em; }
.est-badges span { color: rgba(255,255,255,.5); font-size: 12px; line-height: 1.5; }

/* ---------- Rakamlar ---------- */

.est-stats { position: relative; z-index: 3; background: var(--est-navy); color: #fff; }
.est-stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); border-right: 1px solid var(--est-line-dark); border-left: 1px solid var(--est-line-dark); }
.est-stats article { position: relative; min-height: 196px; padding: 40px 34px; border-right: 1px solid var(--est-line-dark); }
.est-stats article:last-child { border-right: 0; }
.est-stats article > span { position: absolute; top: 20px; right: 22px; color: rgba(255,255,255,.24); font-family: var(--est-mono); font-size: 10px; }
.est-stats strong { display: block; color: var(--est-cyan-soft); font-family: var(--est-display); font-size: clamp(40px, 4vw, 60px); font-weight: 500; letter-spacing: -.06em; font-variant-numeric: tabular-nums; }
.est-stats p { margin-top: 14px; color: rgba(255,255,255,.6); font-size: 12px; letter-spacing: .05em; text-transform: uppercase; }

/* ---------- Kurumsal giriş ---------- */

.est-intro { background: #fff; padding: 104px 0; }
.est-intro__grid { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1fr); gap: clamp(50px, 8vw, 120px); }
.est-intro h2 { max-width: 640px; margin-top: 22px; font-size: clamp(42px, 4.4vw, 68px); line-height: 1.04; }
.est-lead { max-width: 700px; color: #35485a; font-size: clamp(17px, 1.5vw, 21px); line-height: 1.75; }
.est-text-link { display: inline-flex; align-items: center; gap: 26px; margin-top: 34px; padding-bottom: 9px; border-bottom: 1px solid var(--est-ink); font-size: 13px; font-weight: 700; }

/* ---------- Çözümler ---------- */

.est-services { background: var(--est-surface); }
.est-services__grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--est-line); border-left: 1px solid var(--est-line); }
.est-service-card { min-height: 440px; display: flex; flex-direction: column; padding: 30px; border-right: 1px solid var(--est-line); border-bottom: 1px solid var(--est-line); background: rgba(255,255,255,.5); transition: background .25s ease, transform .25s ease, box-shadow .25s ease; }
.est-service-card:hover { z-index: 2; transform: translateY(-8px); background: #fff; box-shadow: 0 24px 70px rgba(5,36,62,.12); }
.est-service-card__top { display: flex; align-items: flex-start; justify-content: space-between; color: #8695a2; font-family: var(--est-mono); font-size: 11px; }
/* Lucide ikonları 24x24 ızgaradadır; kalınlık ölçeğe göre ayarlanır. */
.est-service-card__top svg { width: 44px; height: 44px; fill: none; stroke: var(--est-blue-ink); stroke-width: 1.35; stroke-linecap: round; stroke-linejoin: round; }
.est-service-card h3 { margin-top: 40px; font-size: clamp(25px, 2vw, 31px); line-height: 1.1; }
.est-service-card > p { margin-top: 16px; color: var(--est-muted); font-size: 14.5px; line-height: 1.7; }
.est-service-card ul { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 22px; }
/* Etiketler İngilizce teknik terim içerdiği için büyük harfe çevrilmez:
   sayfa dili tr olduğundan "Voice" → "VOİCE" gibi hatalı çıktı oluşuyordu. */
.est-service-card li { padding: 5px 10px; border: 1px solid var(--est-line); color: #5d7383; font-family: var(--est-mono); font-size: 11px; letter-spacing: .01em; }
.est-service-card > a { display: flex; align-items: center; justify-content: space-between; margin-top: auto; padding-top: 22px; border-top: 1px solid var(--est-line); font-size: 12px; font-weight: 700; }

/* ---------- Altyapı ---------- */

.est-infra { position: relative; overflow: hidden; background: var(--est-ink); color: #fff; }
.est-infra::before { position: absolute; top: -30%; left: 45%; width: 55vw; height: 55vw; content: ""; border-radius: 50%; background: radial-gradient(circle, rgba(11,111,164,.18), transparent 66%); }
.est-infra .est-container { position: relative; }
.est-section-head--light h2 { color: #fff; }
.est-section-head--light h2 em { color: var(--est-cyan); }
.est-section-head--light .est-section-label { color: var(--est-cyan); }
.est-section-head--light > p { color: rgba(255,255,255,.62); }
.est-infra__grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .85fr); align-items: stretch; gap: clamp(30px, 4vw, 64px); }
.est-infra__visual { position: relative; min-width: 0; padding: 0 22px 18px; border: 1px solid var(--est-line-dark); background: rgba(255,255,255,.02); }
.est-infra__status { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 14px 2px; margin-bottom: 8px; border-bottom: 1px solid var(--est-line-dark); }
.est-infra__status span { color: rgba(255,255,255,.4); font-family: var(--est-mono); font-size: 9px; letter-spacing: .14em; }
.est-infra__status strong { font-family: var(--est-mono); font-size: 10px; font-weight: 500; letter-spacing: .08em; }
.est-infra__status strong i { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: #51f5a0; box-shadow: 0 0 8px #51f5a0; }

.est-diagram { width: 100%; height: auto; }
.est-diagram__orbit { fill: none; stroke: rgba(255,255,255,.14); stroke-width: 1; stroke-dasharray: 3 7; }
.est-diagram__beams path { fill: url(#estBeam); }
.est-diagram__sat { fill: none; stroke: var(--est-cyan-soft); stroke-width: 1.5; stroke-linejoin: round; }
.est-diagram__station { fill: none; stroke: #fff; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.est-diagram__route { fill: none; stroke: var(--est-cyan); stroke-width: 1.2; stroke-dasharray: 5 8; opacity: .7; animation: estDash 12s linear infinite; }
.est-diagram__node circle { fill: var(--est-cyan); stroke: rgba(53,214,255,.24); stroke-width: 10; }
.est-diagram__backbone path { fill: none; stroke: rgba(255,255,255,.22); stroke-width: 1; }
.est-diagram__backbone circle { fill: var(--est-navy); stroke: var(--est-cyan-soft); stroke-width: 1.6; }
.est-diagram__satlabel text, .est-diagram__label text { fill: rgba(255,255,255,.62); font-family: var(--est-mono); font-size: 9.5px; letter-spacing: .12em; }
.est-diagram__label .est-diagram__sub { fill: rgba(255,255,255,.34); font-size: 8px; letter-spacing: .08em; }

.est-specs { display: flex; flex-direction: column; justify-content: space-between; border-top: 1px solid var(--est-line-dark); }
.est-specs > div { display: grid; grid-template-columns: minmax(120px, .55fr) 1fr; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--est-line-dark); }
.est-specs dt { color: rgba(255,255,255,.46); font-size: 12px; letter-spacing: .03em; text-transform: uppercase; }
.est-specs dd { color: #fff; font-family: var(--est-mono); font-size: 12.5px; line-height: 1.55; }

/* ---------- Global ağ ---------- */

.est-network { background: #fff; }
.est-backbone { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; border-top: 1px solid var(--est-line); }
.est-backbone article { position: relative; padding: 34px 34px 40px 0; border-right: 1px solid var(--est-line); }
.est-backbone article:last-child { border-right: 0; }
.est-backbone article + article { padding-left: 34px; }
.est-backbone__dot { position: absolute; top: -4px; left: 0; width: 7px; height: 7px; border-radius: 50%; background: var(--est-cyan); box-shadow: 0 0 0 5px rgba(53,214,255,.18); }
.est-backbone article + article .est-backbone__dot { left: 34px; }
.est-backbone h3 { font-size: clamp(26px, 2.2vw, 34px); }
.est-backbone strong { display: block; margin-top: 8px; color: var(--est-blue-ink); font-family: var(--est-mono); font-size: 11px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; }
.est-backbone p { margin-top: 14px; color: var(--est-muted); font-size: 14px; line-height: 1.7; }

.est-partners { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 54px; padding-top: 40px; border-top: 1px solid var(--est-line); }
.est-partners > div > span { display: block; margin-bottom: 18px; color: #8695a2; font-family: var(--est-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.est-partners ul { display: flex; flex-wrap: wrap; gap: 8px; }
.est-partners li { padding: 9px 14px; border: 1px solid var(--est-line); background: var(--est-paper); color: #23384a; font-family: var(--est-display); font-size: 13px; letter-spacing: -.01em; }

/* ---------- Sektörler ---------- */

.est-sectors { background: var(--est-surface); }
.est-sectors__grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--est-line); border-left: 1px solid var(--est-line); }
.est-sectors article { padding: 34px 32px 38px; border-right: 1px solid var(--est-line); border-bottom: 1px solid var(--est-line); background: rgba(255,255,255,.5); transition: background .25s ease; }
.est-sectors article:hover { background: #fff; }
.est-sectors svg { width: 30px; height: 30px; fill: none; stroke: var(--est-blue-ink); stroke-width: 1.55; stroke-linecap: round; stroke-linejoin: round; }
.est-sectors h3 { margin-top: 26px; font-size: 24px; }
.est-sectors p { margin-top: 12px; color: var(--est-muted); font-size: 14.5px; line-height: 1.7; }

/* ---------- Projeler ---------- */

.est-projects { background: var(--est-paper); }
.est-projects__list { border-top: 1px solid var(--est-line); }
.est-project { display: grid; grid-template-columns: 42px 88px minmax(190px, .6fr) minmax(280px, 1fr) 118px; align-items: center; gap: 30px; padding: 22px 12px; border-bottom: 1px solid var(--est-line); transition: padding .22s ease, background .22s ease; }
.est-project:hover { padding-inline: 24px; background: #fff; }
.est-project__index { align-self: center; color: #8c9aa5; font-family: var(--est-mono); font-size: 10px; }
.est-project__logo { width: 84px; height: 84px; display: grid; place-items: center; overflow: hidden; border: 1px solid var(--est-line); background: #fff; }
.est-project__logo img { width: 62px; height: 62px; object-fit: contain; filter: grayscale(1); opacity: .78; mix-blend-mode: multiply; transition: filter .2s ease, opacity .2s ease; }
.est-project:hover .est-project__logo img { filter: grayscale(0); opacity: 1; }
.est-project__title > span { color: var(--est-blue-ink); font-family: var(--est-mono); font-size: 9.5px; letter-spacing: .1em; text-transform: uppercase; }
.est-project__title h3 { margin-top: 7px; font-size: clamp(21px, 1.9vw, 28px); letter-spacing: -.035em; }
.est-project > p { color: var(--est-muted); font-size: 14px; line-height: 1.7; }
.est-project > strong { justify-self: end; color: var(--est-blue-ink); font-family: var(--est-mono); font-size: 12px; font-weight: 500; text-align: right; }

/* ---------- Referans logoları ---------- */

.est-trust { padding: 74px 0 88px; background: var(--est-paper); border-top: 1px solid var(--est-line); }
.est-trust__logos { display: grid; grid-template-columns: repeat(4, 1fr); margin-top: 32px; border-top: 1px solid var(--est-line); border-left: 1px solid var(--est-line); }
/* Yükseklik min-height ile verilir. aspect-ratio kullanıldığında hücrenin
   içerik yüksekliği genişliği de zorluyor ve ızgara konteyneri taşırıyordu. */
.est-trust__logos > div { min-height: 152px; display: grid; place-items: center; padding: 22px; border-right: 1px solid var(--est-line); border-bottom: 1px solid var(--est-line); background: #fff; }
/* Ölçüler sabit: görsel yüklenmeden de hücre yüksekliği korunur, kayma olmaz. */
.est-trust__logos img { width: 100%; max-width: 160px; height: 104px; object-fit: contain; filter: grayscale(1); opacity: .62; mix-blend-mode: multiply; transition: filter .2s ease, opacity .2s ease, transform .2s ease; }
.est-trust__logos > div:hover img { filter: grayscale(0); opacity: 1; transform: scale(1.06); }

/* ---------- UZAYNET markası ---------- */

.est-brand { position: relative; overflow: hidden; background: var(--est-navy); color: #fff; }
.est-brand::before { position: absolute; top: 50%; right: -12%; width: 46vw; height: 46vw; content: ""; transform: translateY(-50%); border-radius: 50%; background: radial-gradient(circle, rgba(53,214,255,.13), transparent 66%); }
.est-brand__grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .68fr); align-items: center; gap: clamp(40px, 6vw, 90px); }
.est-brand h2 { margin-top: 20px; font-family: var(--est-display); font-size: clamp(52px, 6vw, 88px); letter-spacing: -.05em; }
.est-brand__copy > p { max-width: 580px; margin-top: 24px; color: rgba(255,255,255,.66); font-size: 17px; line-height: 1.75; }
.est-brand__actions { display: flex; align-items: center; flex-wrap: wrap; gap: 26px; margin-top: 36px; }
.est-brand__phone { display: flex; flex-direction: column; gap: 3px; padding-bottom: 5px; border-bottom: 1px solid rgba(255,255,255,.28); }
.est-brand__phone span { color: rgba(255,255,255,.45); font-family: var(--est-mono); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; }
.est-brand__phone strong { font-family: var(--est-mono); font-size: 16px; font-weight: 500; }
.est-brand__points { display: grid; grid-template-columns: 1fr 1fr; border-top: 1px solid var(--est-line-dark); border-left: 1px solid var(--est-line-dark); }
.est-brand__points li { padding: 26px 24px; border-right: 1px solid var(--est-line-dark); border-bottom: 1px solid var(--est-line-dark); }
.est-brand__points strong { display: block; color: var(--est-cyan-soft); font-family: var(--est-display); font-size: 20px; font-weight: 500; letter-spacing: -.02em; }
.est-brand__points span { display: block; margin-top: 7px; color: rgba(255,255,255,.5); font-size: 12.5px; line-height: 1.55; }

/* ---------- Tarihçe ---------- */

.est-legacy { background: #fff; }
/* Her madde kendi üst çizgisini ve noktasını taşır; böylece sütun sayısı
   değiştiğinde (5 / 3 / 2 / 1) nth-child düzeltmesine gerek kalmaz. */
.est-timeline { display: grid; grid-template-columns: repeat(5, 1fr); column-gap: 30px; row-gap: 36px; }
.est-timeline li { position: relative; padding-top: 30px; border-top: 1px solid var(--est-line); }
.est-timeline li::before { position: absolute; top: -4.5px; left: 0; width: 8px; height: 8px; content: ""; border-radius: 50%; background: var(--est-blue-ink); }
.est-timeline li:last-child::before { background: var(--est-cyan); box-shadow: 0 0 0 5px rgba(53,214,255,.22); }
.est-timeline strong { display: block; color: var(--est-blue-ink); font-family: var(--est-mono); font-size: 15px; font-weight: 500; letter-spacing: .04em; }
.est-timeline h3 { margin-top: 14px; font-size: 21px; line-height: 1.2; }
.est-timeline p { margin-top: 12px; color: var(--est-muted); font-size: 13.5px; line-height: 1.7; }

/* ---------- SSS ---------- */

.est-faq { background: var(--est-surface); }
.est-faq__grid { display: grid; grid-template-columns: minmax(0, .72fr) minmax(0, 1fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.est-faq h2 { margin-top: 22px; font-size: clamp(38px, 3.6vw, 54px); line-height: 1.06; }
.est-faq__grid > div:first-child > p { margin-top: 22px; color: var(--est-muted); font-size: 16px; line-height: 1.75; }
.est-accordion { border-top: 1px solid var(--est-line); }
.est-accordion__item { border-bottom: 1px solid var(--est-line); }
.est-accordion h3 { margin: 0; }
.est-accordion button { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 24px 0; border: 0; background: transparent; color: inherit; font-family: var(--est-display); font-size: clamp(17px, 1.5vw, 20px); font-weight: 500; letter-spacing: -.02em; text-align: left; cursor: pointer; transition: color .2s ease; }
.est-accordion button:hover { color: var(--est-blue-ink); }
.est-accordion button i { position: relative; flex: 0 0 auto; width: 18px; height: 18px; }
.est-accordion button i::before, .est-accordion button i::after { position: absolute; top: 50%; left: 0; width: 18px; height: 1.5px; content: ""; background: currentColor; transition: transform .25s ease; }
.est-accordion button i::after { transform: rotate(90deg); }
.est-accordion button[aria-expanded="true"] i::after { transform: rotate(0deg); }
.est-accordion__panel p { padding: 0 40px 26px 0; color: var(--est-muted); font-size: 15px; line-height: 1.78; }

/* ---------- İletişim ---------- */

.est-contact { position: relative; overflow: hidden; padding: 118px 0 100px; background: var(--est-ink); color: #fff; }
.est-contact__rings { position: absolute; top: 12%; left: 50%; width: 820px; height: 820px; transform: translateX(-50%); pointer-events: none; }
.est-contact__rings i { position: absolute; inset: 0; border: 1px solid rgba(255,255,255,.06); border-radius: 50%; }
.est-contact__rings i:nth-child(2) { inset: 16%; }
.est-contact__rings i:nth-child(3) { inset: 32%; }
.est-contact__grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(340px, .82fr); gap: clamp(40px, 6vw, 96px); align-items: start; }
.est-contact .est-section-label { color: var(--est-cyan); }
.est-contact h2 { margin-top: 22px; font-size: clamp(40px, 4.2vw, 64px); line-height: 1.04; }
.est-contact__lead { max-width: 560px; margin-top: 24px; color: rgba(255,255,255,.68); font-size: 17px; line-height: 1.75; }
.est-contact__direct { display: grid; gap: 1px; margin-top: 40px; border-top: 1px solid var(--est-line-dark); }
.est-contact__direct a { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; padding: 15px 0; border-bottom: 1px solid var(--est-line-dark); transition: padding-left .2s ease; }
.est-contact__direct a:hover { padding-left: 8px; }
.est-contact__direct span { color: rgba(255,255,255,.44); font-family: var(--est-mono); font-size: 10px; letter-spacing: .12em; text-transform: uppercase; }
.est-contact__direct strong { color: #fff; font-family: var(--est-mono); font-size: 15px; font-weight: 500; }
.est-contact__note { margin-top: 26px; max-width: 500px; color: rgba(255,255,255,.42); font-size: 13px; line-height: 1.7; }

.est-form-wrap { padding: 34px; border: 1px solid var(--est-line-dark); background: rgba(255,255,255,.035); backdrop-filter: blur(6px); }
.est-form__alert { margin-bottom: 22px; padding: 14px 16px; border-left: 2px solid; font-size: 14px; line-height: 1.6; }
.est-form__alert--ok { border-color: #51f5a0; background: rgba(81,245,160,.09); color: #b6ffd9; }
.est-form__alert--error { border-color: #ff8f6b; background: rgba(255,143,107,.09); color: #ffcbb9; }
.est-form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.est-form__field { display: flex; flex-direction: column; gap: 8px; margin-bottom: 16px; }
.est-form__field label { color: rgba(255,255,255,.6); font-size: 11.5px; letter-spacing: .06em; text-transform: uppercase; }
.est-form__field label em { color: var(--est-cyan); font-style: normal; }
.est-form input, .est-form select, .est-form textarea { width: 100%; padding: 13px 14px; border: 1px solid rgba(255,255,255,.16); border-radius: 0; background: rgba(4,18,31,.5); color: #fff; font-family: inherit; font-size: 14.5px; transition: border-color .2s ease, background .2s ease; }
.est-form textarea { resize: vertical; min-height: 108px; line-height: 1.6; }
.est-form select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, rgba(255,255,255,.5) 50%), linear-gradient(135deg, rgba(255,255,255,.5) 50%, transparent 50%); background-position: calc(100% - 19px) 22px, calc(100% - 13px) 22px; background-size: 6px 6px; background-repeat: no-repeat; }
.est-form select option { background: var(--est-navy); color: #fff; }
.est-form input:focus, .est-form select:focus, .est-form textarea:focus { border-color: var(--est-cyan); background: rgba(4,18,31,.85); outline: none; }
.est-form input[aria-invalid="true"], .est-form textarea[aria-invalid="true"] { border-color: #ff8f6b; }
.est-form__trap { position: absolute; overflow: hidden; width: 1px; height: 1px; margin: -1px; clip: rect(0 0 0 0); }
.est-form__submit { width: 100%; margin-top: 8px; }
.est-form__kvkk { display: block; margin-top: 16px; color: rgba(255,255,255,.36); font-size: 11.5px; line-height: 1.6; }

.est-offices { position: relative; display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin-top: 84px; padding-top: 40px; border-top: 1px solid var(--est-line-dark); }
.est-offices article { padding-right: 34px; border-right: 1px solid var(--est-line-dark); }
.est-offices article:last-child { border-right: 0; }
.est-offices article + article { padding-left: 34px; }
.est-offices h3 { font-size: 20px; }
.est-offices p { margin-top: 12px; color: rgba(255,255,255,.52); font-size: 13.5px; line-height: 1.7; }
.est-offices span { display: block; margin-top: 12px; color: var(--est-cyan-soft); font-family: var(--est-mono); font-size: 12px; }

/* ---------- Footer ---------- */

.est-footer { padding: 76px 0 24px; background: #030e19; color: #fff; }
.est-footer__top { display: grid; grid-template-columns: 1.35fr repeat(3, 1fr); gap: clamp(30px, 5vw, 80px); padding-bottom: 64px; }
.est-footer__top > div:first-child img { width: 126px; height: auto; filter: brightness(0) invert(1); }
.est-footer__top > div:first-child p { max-width: 300px; margin-top: 24px; color: rgba(255,255,255,.46); font-size: 13px; line-height: 1.75; }
.est-footer__top > div:not(:first-child) { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; }
.est-footer__top > div > span { margin-bottom: 8px; color: var(--est-cyan-soft); font-family: var(--est-mono); font-size: 9px; letter-spacing: .14em; text-transform: uppercase; }
.est-footer__top a { color: rgba(255,255,255,.56); font-size: 12.5px; transition: color .2s ease; }
.est-footer__top a:hover { color: #fff; }
.est-footer__bottom { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid var(--est-line-dark); color: rgba(255,255,255,.34); font-size: 10px; }
.est-footer__bottom div { display: flex; gap: 22px; }
.est-footer__bottom a:hover { color: #fff; }
.est-footer__credit { color: rgba(255,255,255,.2); text-transform: uppercase; }

.est-to-top { position: fixed; z-index: 30; right: 24px; bottom: 24px; width: 44px; height: 44px; display: grid; place-items: center; transform: translateY(100px); border: 1px solid rgba(255,255,255,.2); background: rgba(3,17,31,.9); color: #fff; cursor: pointer; opacity: 0; transition: transform .2s ease, opacity .2s ease; }
.est-to-top.is-visible { transform: translateY(0); opacity: 1; }

/* Mobil aksiyon çubuğu — yalnızca küçük ekranlarda görünür. */
.est-mobilebar { display: none; }

[data-est-reveal] { transform: translateY(24px); opacity: 0; transition: transform .75s cubic-bezier(.2,.7,.2,1), opacity .75s ease; }
[data-est-reveal].is-visible { transform: translateY(0); opacity: 1; }

@keyframes estRotate { to { transform: translate(-50%,-50%) rotate(360deg); } }
@keyframes estScroll { 0%,100% { transform: translateX(-24px); } 50% { transform: translateX(55px); } }
@keyframes estDash { to { stroke-dashoffset: -130; } }

/* ---------------------------------------------------------------------
 * Responsive
 * ------------------------------------------------------------------ */

@media (max-width: 1180px) {
    :root { --est-container: min(100% - 48px, 1120px); }
    .est-nav { gap: 18px; }
    .est-nav > a { font-size: 12px; }
    .est-hero__inner { grid-template-columns: minmax(0, 1.2fr) minmax(280px, .8fr); }
    .est-badges__grid { grid-template-columns: repeat(2, 1fr); }
    .est-badges__grid > div:nth-child(2n) { border-right: 0; }
    .est-badges__grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--est-line-dark); }
    .est-services__grid { grid-template-columns: repeat(2, 1fr); }
    .est-infra__grid { grid-template-columns: 1fr; }
    .est-sectors__grid { grid-template-columns: repeat(2, 1fr); }
    .est-project { grid-template-columns: 36px 80px minmax(170px,.6fr) 1fr 92px; gap: 22px; }
    .est-timeline { grid-template-columns: repeat(3, 1fr); }
    .est-contact__grid { grid-template-columns: 1fr; }
    .est-form-wrap { max-width: 620px; }
}

@media (max-width: 880px) {
    :root { --est-container: calc(100% - 40px); }
    .est-section { padding: 88px 0; }
    .est-intro { padding: 84px 0; }
    .est-header__inner { min-height: 78px; }
    .est-logo { width: 112px; }
    .est-logo img { width: 105px; }
    .est-menu-toggle { display: block; z-index: 90; }
    .est-nav { position: fixed; z-index: 80; top: 0; right: 0; width: min(420px, 100%); height: 100dvh; display: flex; flex-direction: column; align-items: stretch; justify-content: center; gap: 0; padding: 100px 34px 34px; overflow-y: auto; transform: translateX(105%); background: var(--est-navy); box-shadow: -20px 0 50px rgba(0,0,0,.25); transition: transform .3s ease; }
    .est-nav.is-open { transform: translateX(0); }
    .est-nav > a { padding: 15px 0; border-bottom: 1px solid var(--est-line-dark); font-family: var(--est-display); font-size: 23px; font-weight: 500; }
    .est-nav > a:not(.est-nav__cta)::after { display: none; }
    .est-nav .est-nav__cta { margin-top: 22px; justify-content: space-between; padding: 17px; font-family: "DM Sans", sans-serif; font-size: 13px; }
    .est-menu-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
    .est-menu-toggle.is-open span:nth-child(2) { opacity: 0; }
    .est-menu-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

    .est-hero { min-height: 800px; }
    .est-hero__inner { display: block; padding-top: 172px; }
    .est-hero__signal { position: absolute; right: -120px; bottom: 30px; width: 400px; opacity: .42; }
    .est-hero__content { max-width: 640px; }
    .est-hero h1 { font-size: clamp(52px, 10vw, 80px); }
    .est-hero__scroll { display: none; }

    .est-stats__grid { grid-template-columns: repeat(2, 1fr); }
    .est-stats article:nth-child(2n) { border-right: 0; }
    .est-stats article:nth-child(-n+2) { border-bottom: 1px solid var(--est-line-dark); }
    .est-intro__grid, .est-faq__grid, .est-brand__grid { grid-template-columns: 1fr; }
    .est-section-head { grid-template-columns: 1fr; gap: 26px; margin-bottom: 46px; }
    .est-section-head > p { max-width: 620px; }
    .est-backbone { grid-template-columns: 1fr; }
    .est-backbone article { padding: 30px 0 30px 22px; border-right: 0; border-bottom: 1px solid var(--est-line); }
    .est-backbone article:last-child { border-bottom: 0; }
    .est-backbone article + article { padding-left: 22px; }
    .est-backbone__dot, .est-backbone article + article .est-backbone__dot { top: 32px; left: 0; }
    .est-partners { grid-template-columns: 1fr; gap: 30px; }
    /* 8 logo: 2 sütun her zaman tam satır verir, boş hücre kalmaz. */
    .est-trust__logos { grid-template-columns: repeat(2, 1fr); }
    .est-project { grid-template-columns: 34px 78px 1fr 92px; }
    .est-project > p { grid-column: 3 / 5; }
    .est-project > strong { grid-column: 4; grid-row: 1; }
    .est-timeline { grid-template-columns: repeat(2, 1fr); }
    .est-offices { grid-template-columns: 1fr; margin-top: 60px; }
    .est-offices article { padding: 22px 0; border-right: 0; border-bottom: 1px solid var(--est-line-dark); }
    .est-offices article:last-child { border-bottom: 0; }
    .est-offices article + article { padding-left: 0; }
    .est-footer__top { grid-template-columns: 1.3fr repeat(2, 1fr); gap: 46px; }
    .est-footer__top > div:last-child { grid-column: 2 / 4; }

    .est-to-top { display: none; }
    .est-mobilebar { position: fixed; z-index: 60; right: 0; bottom: 0; left: 0; display: grid; grid-template-columns: 1fr 1.4fr; gap: 1px; background: rgba(255,255,255,.14); box-shadow: 0 -12px 34px rgba(3,14,25,.24); transform: translateY(110%); transition: transform .28s ease; }
    .est-mobilebar.is-visible { transform: translateY(0); }
    .est-mobilebar a { display: grid; place-items: center; min-height: 56px; background: var(--est-ink); color: #fff; font-size: 13.5px; font-weight: 700; }
    .est-mobilebar__cta { background: var(--est-cyan) !important; color: #021523 !important; }
    body.est-menu-open .est-mobilebar { transform: translateY(110%); }
}

@media (max-width: 600px) {
    :root { --est-container: calc(100% - 32px); }
    .est { font-size: 15px; }
    .est-section { padding: 70px 0; }
    .est-intro { padding: 70px 0; }
    .est-notice { display: none; }
    .est-header { top: 0; }
    .est-header__inner { min-height: 72px; }

    .est-hero { min-height: 740px; }
    .est-hero::before { background-image: linear-gradient(180deg, rgba(3,16,29,.9), rgba(3,16,29,.56) 55%, rgba(3,16,29,.95)), var(--est-hero-image); background-position: 58% center; }
    .est-hero__inner { padding-top: 142px; padding-bottom: 90px; }
    .est-eyebrow { margin-bottom: 22px; font-size: 9.5px; }
    .est-hero h1 { font-size: clamp(44px, 13vw, 66px); line-height: .99; }
    .est-hero__content > p { margin-top: 22px; font-size: 16px; line-height: 1.66; }
    .est-hero__actions { align-items: stretch; flex-direction: column; margin-top: 32px; }
    .est-hero__actions .est-button { width: 100%; justify-content: space-between; }
    .est-hero__signal { right: -170px; bottom: -30px; width: 360px; }
    /* Halkalar dekoratif kalsın; koordinat metni ekran dışına taşıp kırpılıyordu. */
    .est-signal__core { display: none; }

    .est-badges__grid { grid-template-columns: 1fr; }
    .est-badges__grid > div { border-right: 0; border-bottom: 1px solid var(--est-line-dark); padding: 17px 22px; }
    .est-badges__grid > div:last-child { border-bottom: 0; }

    .est-stats article { min-height: 154px; padding: 30px 20px; }
    .est-stats strong { font-size: 40px; }
    .est-stats p { font-size: 9.5px; }

    .est-intro h2, .est-section-head h2, .est-faq h2, .est-contact h2 { font-size: 38px; }
    .est-lead { font-size: 17px; }
    .est-services__grid, .est-sectors__grid { grid-template-columns: 1fr; }
    .est-service-card { min-height: 0; }
    .est-service-card h3 { margin-top: 30px; }

    .est-infra__visual { padding: 12px 4px; }
    .est-infra__status { position: static; margin-top: 14px; }
    .est-diagram__satlabel text, .est-diagram__label text { font-size: 12px; }
    .est-diagram__label .est-diagram__sub { font-size: 10px; }
    .est-specs > div { grid-template-columns: 1fr; gap: 5px; padding: 13px 0; }
    .est-specs dd { font-size: 11.5px; }

    .est-project { grid-template-columns: 28px 66px 1fr; gap: 14px; padding: 22px 0; }
    .est-project:hover { padding-inline: 8px; }
    .est-project__logo { width: 64px; height: 64px; }
    .est-project__logo img { width: 48px; height: 48px; }
    .est-project__title h3 { font-size: 21px; }
    .est-project > p { grid-column: 2 / 4; }
    .est-project > strong { grid-column: 2 / 4; grid-row: auto; justify-self: start; text-align: left; }

    .est-trust__logos { grid-template-columns: repeat(2, 1fr); }
    .est-brand__points { grid-template-columns: 1fr; }
    .est-brand__actions { align-items: stretch; flex-direction: column; gap: 20px; }
    .est-brand__actions .est-button { width: 100%; justify-content: space-between; }
    .est-brand__phone { align-self: flex-start; }

    .est-timeline { grid-template-columns: 1fr; row-gap: 28px; }
    .est-trust__logos > div { min-height: 118px; padding: 16px; }
    .est-trust__logos img { height: 78px; }

    .est-accordion button { font-size: 16.5px; padding: 20px 0; }
    .est-accordion__panel p { padding-right: 0; font-size: 14.5px; }

    .est-contact { padding: 70px 0 84px; }
    .est-form-wrap { padding: 22px 18px; }
    .est-form__row { grid-template-columns: 1fr; gap: 0; }

    .est-footer { padding-bottom: 80px; }
    .est-footer__top { grid-template-columns: 1fr 1fr; gap: 38px 24px; }
    .est-footer__top > div:first-child { grid-column: 1 / 3; }
    .est-footer__top > div:last-child { grid-column: 1 / 3; }
    .est-footer__bottom { align-items: flex-start; flex-direction: column; }
    .est-footer__credit { display: none; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .est *, .est *::before, .est *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
    [data-est-reveal] { transform: none; opacity: 1; }
}

.no-js [data-est-reveal] { transform: none; opacity: 1; }