/* ============================================================
   Su Ölçüm Tesisleri
   Apple Ürün Sayfası Estetiğinde Koyu Tema
   ============================================================ */
:root {
    /* Yüzeyler - Apple Dark Teması */
    --os-bg: #000000;
    --os-bg-2: #0d0d0f;
    --os-bg-3: #1c1c1e;

    /* Tipografi renkleri */
    --os-text: #f5f5f7;
    --os-text-2: #a1a1a6;
    --os-text-muted: #6e6e73;

    /* Vurgu renkleri */
    --os-blue: #0a84ff;
    --os-blue-hover: #409cff;
    --os-cyan: #64d2ff;
    --os-teal: #40c8e0;
    --os-green: #30d158;
    --os-orange: #ff9f0a;

    --os-grad: linear-gradient(120deg, #0a84ff 0%, #64d2ff 100%);

    /* Kart / kenarlık */
    --os-card: #1c1c1e;
    --os-card-border: rgba(255, 255, 255, 0.12);
    --os-hairline: rgba(84, 84, 88, 0.65);

    --os-shadow-soft: 0 2px 8px rgba(0, 0, 0, 0.5), 0 12px 28px rgba(0, 0, 0, 0.45);
    --os-shadow-blue: 0 10px 26px rgba(10, 132, 255, 0.35);

    --os-ease: cubic-bezier(0.28, 0.11, 0.32, 1);
    --os-ease-spring: cubic-bezier(0.16, 1, 0.3, 1);

    --os-font: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
        "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

/* ---------- BASE ---------- */
html, body {
    margin: 0;
    padding: 0;
    background-color: var(--os-bg);
    color: var(--os-text);
    font-family: var(--os-font);
    overflow-x: hidden;
    width: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}
p{
    text-indent: 0;
}
.os-page { font-size: 17px; }

.os-page .container-os {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 2;
}

.os-section {
    padding: 140px 0;
    position: relative;
}

/* ---------- UTILITY ---------- */
.os-kicker {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--os-blue);
    margin-bottom: 16px;
}
    .os-kicker .os-kicker-dot {
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--os-blue);
        box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.2);
    }

.os-section-title {
    font-size: clamp(2.1rem, 4vw, 3.2rem);
    font-weight: 600;
    line-height: 1.08;
    letter-spacing: -0.022em;
    margin: 0 0 18px;
    color: var(--os-text);
}
    .os-section-title .grad {
        background: var(--os-grad);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

.os-section-desc {
    font-size: 1.15rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--os-text-2);
    max-width: 680px;
    margin: 0 auto;
}

.os-center { text-align: center; }

/* ---------- SCROLL REVEAL ---------- */
.os-reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 0.8s var(--os-ease-spring), transform 0.8s var(--os-ease-spring);
    will-change: opacity, transform;
}
    .os-reveal.in-view {
        opacity: 1;
        transform: translateY(0);
    }

/* ============================================================
   HERO
   ============================================================ */
.os-hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: 84px 0 56px;
    background: var(--os-bg);
}
    .os-hero::before {
        content: "";
        position: absolute;
        inset: 0;
        background:
            radial-gradient(1100px 620px at 82% -8%, rgba(10, 132, 255, 0.14), transparent 60%),
            radial-gradient(760px 460px at -6% 96%, rgba(64, 200, 224, 0.12), transparent 55%);
        pointer-events: none;
    }

/* Arka plan katmanı (dalga canvas + orb'lar + grid) */
.os-hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

.os-hero-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.5;
    animation: osOrbFloat 8s ease-in-out infinite;
}
    .os-hero-orb-1 {
        width: 420px;
        height: 420px;
        background: radial-gradient(circle, rgba(10, 132, 255, 0.35), transparent 70%);
        top: -120px;
        right: 8%;
        animation-delay: 0s;
    }
    .os-hero-orb-2 {
        width: 340px;
        height: 340px;
        background: radial-gradient(circle, rgba(64, 200, 224, 0.3), transparent 70%);
        bottom: -80px;
        left: -6%;
        animation-delay: 2s;
    }
    .os-hero-orb-3 {
        width: 280px;
        height: 280px;
        background: radial-gradient(circle, rgba(100, 210, 255, 0.25), transparent 70%);
        top: 40%;
        left: 50%;
        transform: translateX(-50%);
        animation-delay: 4s;
    }

@keyframes osOrbFloat {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-20px, -30px); }
}

.os-hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.5;
}

.os-hero-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    pointer-events: none;
}

/* Hero içeriği ortalanmış container yerine sayfanın soluna yaslanır */
.os-hero .container-os {
    max-width: none;
    margin: 0;
    padding-left: clamp(20px, 5vw, 80px);
    padding-right: 24px;
}

.os-hero-head {
    position: relative;
    z-index: 2;
    text-align: left;
    max-width: min(900px, 56vw);
    margin: 0 0 56px;
}

.os-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    font-size: 13px;
    font-weight: 600;
    color: var(--os-text-2);
    border: 1px solid var(--os-hairline);
    background: rgba(28, 28, 30, 0.7);
    padding: 7px 16px 7px 12px;
    border-radius: 980px;
    margin-bottom: 22px;
    opacity: 0;
    animation: osFadeUp 0.9s var(--os-ease-spring) both 0.15s;
}
    .os-hero-badge::before {
        content: "";
        width: 7px;
        height: 7px;
        border-radius: 50%;
        background: var(--os-green);
        box-shadow: 0 0 0 0 rgba(48, 209, 88, 0.6);
        animation: osPulse 2.2s ease-out infinite;
        flex-shrink: 0;
    }

@keyframes osPulse {
    0%   { box-shadow: 0 0 0 0 rgba(48, 209, 88, 0.45); }
    70%  { box-shadow: 0 0 0 9px rgba(48, 209, 88, 0); }
    100% { box-shadow: 0 0 0 0 rgba(48, 209, 88, 0); }
}

@keyframes osFadeUp {
    from { opacity: 0; transform: translateY(24px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes osWordIn {
    from { opacity: 0; transform: translateX(-72px); filter: blur(10px); }
    to   { opacity: 1; transform: translateX(0); filter: blur(0); }
}

.os-hero h1 {
    font-size: clamp(3rem, 7vw, 6.2rem);
    font-weight: 700;
    line-height: 1.04;
    letter-spacing: -0.03em;
    margin: 0 0 24px;
    color: var(--os-text);
}
    .os-hero h1 .os-hero-word {
        display: block;
        opacity: 0;
        animation: osWordIn 0.95s var(--os-ease-spring) forwards;
        will-change: transform, opacity, filter;
    }
    .os-hero h1 .os-hero-word:nth-child(1) { animation-delay: 0.25s; }
    .os-hero h1 .os-hero-word:nth-child(2) { animation-delay: 0.45s; }
    .os-hero h1 .grad {
        background: var(--os-grad);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

.os-hero-sub {
    font-size: clamp(1.05rem, 1.7vw, 1.3rem);
    font-weight: 400;
    color: var(--os-text-2);
    max-width: min(760px, 44vw);
    line-height: 1.6;
    margin: 0;
    opacity: 0;
    animation: osFadeUp 1s var(--os-ease-spring) both 0.6s;
}
    .os-hero-sub strong { color: var(--os-text); font-weight: 600; }

/* Scroll göstergesi */
.os-scroll {
    position: absolute;
    bottom: 26px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    color: var(--os-text-muted);
    font-size: 1.1rem;
    animation: osScrollHint 2s ease-in-out infinite;
}
@keyframes osScrollHint {
    0%, 100% { transform: translate(-50%, 0); opacity: 0.5; }
    50% { transform: translate(-50%, 8px); opacity: 1; }
}

/* ============================================================
   HERO: 3B VERİ HALKASI (ürün kartları + ESYS çekirdeği)
   ============================================================ */
.os-hero-stage {
    --fit: 1;
    --rx: clamp(160px, 19vw, 230px);
    position: absolute;
    top: 50%;
    right: clamp(40px, 9vw, 170px);
    transform: translateY(-50%);
    width: clamp(400px, 38vw, 560px);
    height: 540px;
    z-index: 2;
    cursor: grab;
    touch-action: pan-y;
    user-select: none;
    -webkit-user-select: none;
    opacity: 0;
    animation: osStageIn 1.1s var(--os-ease-spring) 0.55s forwards;
}
    .os-hero-stage.is-grabbing { cursor: grabbing; }
@keyframes osStageIn {
    from { opacity: 0; transform: translateY(calc(-50% + 36px)) scale(0.96); filter: blur(6px); }
    to   { opacity: 1; transform: translateY(-50%) scale(1); filter: blur(0); }
}

/* Sahne arkası ambient ışıma */
.os-stage-glow {
    position: absolute;
    left: 50%;
    top: 44%;
    width: 120%;
    height: 92%;
    transform: translate(-50%, -50%);
    background: radial-gradient(closest-side, rgba(10, 132, 255, 0.17), rgba(100, 210, 255, 0.05) 55%, transparent 75%);
    filter: blur(6px);
    pointer-events: none;
    animation: osGlowBreath 7s ease-in-out infinite;
}
@keyframes osGlowBreath {
    0%, 100% { opacity: 0.7; }
    50%      { opacity: 1; }
}

/* Yörünge düzlemi (eliptik kılavuz) */
.os-stage-plane {
    position: absolute;
    left: 50%;
    top: 44%;
    width: 84%;
    height: 30%;
    transform: translate(-50%, -50%);
    border: 1px dashed rgba(255, 255, 255, 0.13);
    border-top-color: rgba(100, 210, 255, 0.35);
    border-radius: 50%;
    pointer-events: none;
}

/* Merkez: ESYS veri çekirdeği */
.os-stage-core {
    position: absolute;
    left: 50%;
    top: 44%;
    transform: translate(-50%, -50%);
    width: 96px;
    height: 96px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    z-index: 6;
    color: #cfeaff;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.16em;
    background: radial-gradient(circle at 50% 32%, rgba(10, 132, 255, 0.32), rgba(10, 132, 255, 0.08) 62%, rgba(10, 132, 255, 0.02) 78%);
    border: 1px solid rgba(100, 210, 255, 0.3);
    box-shadow: 0 0 40px rgba(10, 132, 255, 0.28), inset 0 0 22px rgba(10, 132, 255, 0.16);
    pointer-events: none;
}
    .os-stage-core i { font-size: 1rem; color: var(--os-cyan); }
    .os-stage-core::before,
    .os-stage-core::after {
        content: "";
        position: absolute;
        inset: 0;
        border-radius: 50%;
        border: 1px solid rgba(100, 210, 255, 0.4);
        animation: osCorePulse 3.2s ease-out infinite;
        pointer-events: none;
    }
    .os-stage-core::after { animation-delay: 1.6s; }
@keyframes osCorePulse {
    from { transform: scale(1); opacity: 0.65; }
    to   { transform: scale(2.15); opacity: 0; }
}

/* ---------- ÜRÜN KARTLARI ---------- */
.os-hp {
    position: absolute;
    left: 50%;
    top: 44%;
    display: block;
    text-decoration: none;
    outline: none;
    will-change: transform, opacity, filter;
}
/* JS devre dışı kaldığında (reduced-motion vb.) statik konumlar */
.os-hp:nth-of-type(1) { transform: translate(-50%, -50%); z-index: 100; }
.os-hp:nth-of-type(2) { transform: translate(calc(-50% + var(--rx)), calc(-50% - 6px)) scale(0.78) rotateY(-20deg); opacity: 0.55; z-index: 40; }
.os-hp:nth-of-type(3) { transform: translate(-50%, calc(-50% - 14px)) scale(0.56); opacity: 0.24; z-index: 20; }
.os-hp:nth-of-type(4) { transform: translate(calc(-50% - var(--rx)), calc(-50% - 6px)) scale(0.78) rotateY(20deg); opacity: 0.55; z-index: 40; }

/* Çerçevesiz kart — ürün silüeti net görünür, arkada yumuşak ışık diski */
.os-hp-card {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: calc(234px * var(--fit));
    height: calc(190px * var(--fit));
}
    .os-hp-card::before {
        content: "";
        position: absolute;
        inset: -14%;
        border-radius: 50%;
        background: radial-gradient(closest-side, rgba(255, 255, 255, 0.05), transparent 72%);
        opacity: 0;
        transition: opacity 0.5s ease;
        pointer-events: none;
    }
    .os-hp-card img {
        position: relative;
        display: block;
        max-width: 100%;
        width: auto;
        height: calc(148px * var(--fit));
        object-fit: contain;
        filter: grayscale(1) brightness(1.55) opacity(0.5);
        transition: filter 0.5s ease, transform 0.6s var(--os-ease-spring);
    }
    .os-hp:hover .os-hp-card img { filter: grayscale(0.3) brightness(1.2) opacity(0.85); }

/* Öndeki (aktif) ürün: tam renk, ışık diski ve zemine gölge */
.os-hp.is-front .os-hp-card::before {
    opacity: 1;
    background: radial-gradient(closest-side, rgba(10, 132, 255, 0.2), rgba(100, 210, 255, 0.07) 55%, transparent 76%);
}
    .os-hp.is-front .os-hp-card img {
        filter: grayscale(0) brightness(1.08) contrast(1.05) drop-shadow(0 0 22px rgba(10, 132, 255, 0.55)) drop-shadow(0 26px 34px rgba(0, 0, 0, 0.55));
    }
    .os-hp.is-front:hover .os-hp-card img { transform: scale(1.05); }

/* ---------- ALT BAŞLIK (aktif ürün bilgisi) ---------- */
.os-stage-caption {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 52px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    text-align: center;
    pointer-events: none;
}
    .os-stage-name {
        font-size: clamp(1.5rem, 2.2vw, 2rem);
        font-weight: 700;
        letter-spacing: -0.01em;
        line-height: 1.1;
        background: var(--os-grad);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
    .os-stage-tag {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: 0.78rem;
        font-weight: 600;
        letter-spacing: 0.07em;
        text-transform: uppercase;
        color: var(--os-text-2);
        border: 1px solid var(--os-hairline);
        background: rgba(28, 28, 30, 0.66);
        padding: 6px 14px;
        border-radius: 980px;
    }
        .os-stage-tag::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--os-green);
            box-shadow: 0 0 0 0 rgba(48, 209, 88, 0.5);
            animation: osPulse 2.2s ease-out infinite;
            flex-shrink: 0;
        }
    .os-stage-name.swap,
    .os-stage-tag.swap { animation: osCaptionIn 0.55s var(--os-ease-spring) both; }
@keyframes osCaptionIn {
    from { opacity: 0; transform: translateY(12px); filter: blur(5px); }
    to   { opacity: 1; transform: translateY(0); filter: blur(0); }
}

/* ---------- NAVİGASYON NOKTALARI ---------- */
.os-stage-dots {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 12px;
    display: flex;
    justify-content: center;
    gap: 8px;
}
    .os-dot {
        width: 7px;
        height: 7px;
        padding: 0;
        border: none;
        border-radius: 980px;
        background: rgba(255, 255, 255, 0.22);
        cursor: pointer;
        transition: width 0.35s var(--os-ease-spring), background 0.3s ease, box-shadow 0.3s ease;
    }
        .os-dot:hover { background: rgba(255, 255, 255, 0.45); }
        .os-dot.active {
            width: 24px;
            background: var(--os-grad);
            box-shadow: 0 0 12px rgba(10, 132, 255, 0.55);
        }

@media (max-width: 1180px) {
    .os-hero-stage { display: none; }
}
/* Kısa ekranlarda sahneyi ölçekle */
@media (min-width: 1181px) and (max-height: 800px) {
    .os-hero-stage {
        animation: none;
        opacity: 1;
        transform: translateY(-50%) scale(0.86);
    }
}

/* ============================================================
   MANİFESTO (scroll'da kelime kelime aydınlanan metin)
   ============================================================ */
.os-manifesto {
    padding: 120px 0;
    background: var(--os-bg);
}
.os-reveal-text {
    font-size: clamp(24px, 3.6vw, 42px);
    font-weight: 600;
    line-height: 1.45;
    letter-spacing: -0.01em;
    color: #333;
    text-align: center;
    max-width: 1000px;
    margin: 0 auto;
}
    .os-reveal-text span { transition: color 0.3s ease; }
    .os-reveal-text span.lit { color: #fff; text-shadow: 0 0 25px rgba(255, 255, 255, 0.3); }

/* ============================================================
   ESYS ENTEGRASYONU
   ============================================================ */
.os-esys {
    background: var(--os-bg-2);
}
.os-esys-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}
.os-esys-media {
    position: relative;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: var(--os-shadow-soft), var(--os-shadow-blue);
    border: 1px solid var(--os-card-border);
    background: var(--os-bg-3);
}
    .os-esys-media img {
        display: block;
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 10;
        object-fit: cover;
        transition: transform 0.8s var(--os-ease-spring);
    }
    .os-esys-media:hover img { transform: scale(1.02); }
    .os-esys-media::after {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, transparent 45%);
        pointer-events: none;
    }
.os-esys-tag {
    position: absolute;
    bottom: 16px;
    left: 16px;
    z-index: 2;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.78rem;
    font-weight: 600;
    color: #ffffff;
    background: rgba(0, 0, 0, 0.68);
    border: 1px solid rgba(255, 255, 255, 0.16);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 7px 13px;
    border-radius: 980px;
}
.os-esys-body h3 {
    font-size: clamp(1.6rem, 2.8vw, 2.3rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--os-text);
    margin: 0 0 16px;
}
    .os-esys-body h3 .grad {
        background: var(--os-grad);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
.os-esys-body p {
    font-size: 1.02rem;
    line-height: 1.75;
    color: var(--os-text-2);
    margin: 0 0 16px;
}
    .os-esys-body p:last-child { margin-bottom: 0; }
    .os-esys-body p strong { color: var(--os-text); font-weight: 600; }

.os-check-list {
    list-style: none;
    margin: 22px 0 0;
    padding: 0;
    display: grid;
    gap: 12px;
}
    .os-check-list li {
        position: relative;
        padding-left: 30px;
        font-size: 0.98rem;
        line-height: 1.6;
        color: var(--os-text-2);
    }
    .os-check-list li::before {
        content: "\f00c";
        font-family: "Font Awesome 6 Free";
        font-weight: 900;
        position: absolute;
        left: 0;
        top: 3px;
        font-size: 0.8rem;
        color: var(--os-blue);
        background: rgba(10, 132, 255, 0.14);
        width: 20px;
        height: 20px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
    }

/* ============================================================
   ÖLÇÜM ÇÖZÜMLERİ (alternating rows)
   ============================================================ */
.os-solutions {
    background: var(--os-bg);
    padding: clamp(150px, 12vw, 200px) 0; /* bölüm içi ekstra ferahlık */
}
/* Bu bölüm daha geniş bir çalışma alanında nefes alır */
.os-solutions .container-os {
    max-width: 1400px;
    padding-left: clamp(24px, 4vw, 64px);
    padding-right: clamp(24px, 4vw, 64px);
}
.os-sol-row {
    display: grid;
    grid-template-columns: 1.12fr 0.88fr;
    gap: clamp(64px, 7vw, 110px);
    align-items: center;
    padding: clamp(100px, 9.5vw, 145px) 0;
    scroll-margin-top: 110px;
}
    /* görsel kartı her iki yönde de geniş kalsın (çift satırlarda sağda) */
    .os-sol-row:nth-child(even) { grid-template-columns: 0.88fr 1.12fr; }
    .os-sol-row:nth-child(even) .os-sol-media { order: 2; }
    .os-sol-row:nth-child(even) .os-sol-body { order: 1; }

.os-sol-media {
    position: relative;
    border-radius: clamp(26px, 2.4vw, 34px);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.13);
    background: var(--os-bg-3);
    box-shadow:
        0 30px 70px rgba(0, 0, 0, 0.55),
        0 60px 160px rgba(10, 132, 255, 0.18);
    transition: transform 0.6s var(--os-ease-spring), box-shadow 0.5s ease, border-color 0.4s ease;
}
    /* paspartu: görselin çevresinde iç çerçeve / beyaz alan hissi */
    .os-sol-media::before {
        content: "";
        position: absolute;
        inset: clamp(10px, 1.1vw, 15px);
        border-radius: clamp(18px, 1.7vw, 25px);
        border: 1px solid rgba(255, 255, 255, 0.10);
        z-index: 1;
        pointer-events: none;
    }
    .os-sol-media img {
        display: block;
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 10;
        object-fit: cover;
        filter: saturate(1.08) contrast(1.04);
        transition: transform 0.8s var(--os-ease-spring), filter 0.5s ease;
    }
    .os-sol-media:hover {
        transform: translateY(-8px);
        border-color: rgba(255, 255, 255, 0.2);
        box-shadow:
            0 40px 85px rgba(0, 0, 0, 0.6),
            0 70px 180px rgba(10, 132, 255, 0.28);
    }
    .os-sol-media:hover img { transform: scale(1.05); filter: saturate(1.22) contrast(1.05) brightness(1.06); }
    .os-sol-media::after {
        content: "";
        position: absolute;
        inset: 0;
        border-radius: inherit;
        background:
            linear-gradient(180deg, rgba(255, 255, 255, 0.08), transparent 30%),
            linear-gradient(180deg, transparent 55%, rgba(0, 0, 0, 0.42) 100%);
        pointer-events: none;
    }

.os-sol-body {
    position: relative;
}

/* Filigran aşama numarası — metnin arkasında dev kontur rakam */
.os-sol-num {
    position: absolute;
    top: clamp(-40px, -3.4vw, -24px);
    left: -10px;
    z-index: 0;
    font-size: clamp(5.2rem, 10.5vw, 9rem);
    font-weight: 800;
    line-height: 1;
    letter-spacing: -0.05em;
    color: transparent;
    -webkit-text-stroke: 1.5px rgba(255, 255, 255, 0.13);
    pointer-events: none;
    user-select: none;
    -webkit-user-select: none;
}
@supports not (-webkit-text-stroke: 1px #fff) {
    .os-sol-num { color: rgba(255, 255, 255, 0.06); }
}
/* çift satırlarda filigran sağa yaslanır (zikzak ritim) */
.os-sol-row:nth-child(even) .os-sol-num { left: auto; right: -10px; }

.os-sol-body h3 {
    position: relative;
    z-index: 1;
    font-size: clamp(1.55rem, 2.6vw, 2.2rem);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--os-text);
    margin: 0 0 18px;
}
.os-sol-body p {
    position: relative;
    z-index: 1;
    font-size: 1.05rem;
    line-height: 1.82;
    color: var(--os-text-2);
    margin: 0;
    max-width: 540px;
}

/* ---------- Görsel inceleme (lightbox) ---------- */
.os-sol-media { cursor: zoom-in; }
    .os-sol-media:focus-visible {
        outline: 2px solid var(--os-blue);
        outline-offset: 4px;
    }
/* hover'da görünen büyütme rozeti (JS ekler) */
.os-media-zoom {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 2;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: #fff;
    background: rgba(10, 132, 255, 0.88);
    box-shadow: 0 6px 18px rgba(10, 132, 255, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.25);
    opacity: 0;
    transform: scale(0.8) translateY(-4px);
    transition: opacity 0.35s ease, transform 0.35s var(--os-ease-spring);
    pointer-events: none;
}
    .os-sol-media:hover .os-media-zoom,
    .os-sol-media:focus-visible .os-media-zoom {
        opacity: 1;
        transform: scale(1) translateY(0);
    }

/* ---------- LIGHTBOX ---------- */
.os-lightbox {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 4vw, 56px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}
    .os-lightbox.is-open { opacity: 1; visibility: visible; }

.os-lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.86);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.os-lightbox-figure {
    position: relative;
    z-index: 1;
    margin: 0;
    max-width: min(1280px, 100%);
    max-height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    transform: scale(0.96) translateY(10px);
    transition: transform 0.4s var(--os-ease-spring);
}
    .os-lightbox.is-open .os-lightbox-figure { transform: none; }

.os-lightbox-img {
    display: block;
    max-width: 100%;
    max-height: 78vh;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 18px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    box-shadow: 0 40px 120px rgba(0, 0, 0, 0.7), 0 0 80px rgba(10, 132, 255, 0.15);
    opacity: 0;
    transform: scale(0.985);
    transition: opacity 0.45s ease, transform 0.45s var(--os-ease-spring);
}
    .os-lightbox-img.is-loaded { opacity: 1; transform: none; }

.os-lightbox-caption {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 14px;
    text-align: center;
}
    .os-lightbox-title {
        font-size: 1.02rem;
        font-weight: 600;
        color: var(--os-text);
    }
    .os-lightbox-count {
        font-size: 0.78rem;
        font-weight: 600;
        letter-spacing: 0.08em;
        color: var(--os-text-2);
        border: 1px solid var(--os-hairline);
        background: rgba(28, 28, 30, 0.7);
        padding: 5px 12px;
        border-radius: 980px;
    }

.os-lightbox-close,
.os-lightbox-nav {
    position: absolute;
    z-index: 2;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.16);
    background: rgba(28, 28, 30, 0.72);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: #fff;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.25s ease, transform 0.3s var(--os-ease-spring), border-color 0.25s ease;
}
    .os-lightbox-close:hover,
    .os-lightbox-nav:hover {
        background: var(--os-blue);
        border-color: var(--os-blue);
        transform: scale(1.06);
    }
.os-lightbox-close { top: clamp(14px, 3vw, 28px); right: clamp(14px, 3vw, 28px); }
.os-lightbox-prev { left: clamp(10px, 2.5vw, 28px); top: 50%; transform: translateY(-50%); }
.os-lightbox-next { right: clamp(10px, 2.5vw, 28px); top: 50%; transform: translateY(-50%); }
    .os-lightbox-prev:hover { transform: translateY(-50%) scale(1.06); }
    .os-lightbox-next:hover { transform: translateY(-50%) scale(1.06); }

@media (max-width: 640px) {
    .os-lightbox-nav { width: 40px; height: 40px; font-size: 0.9rem; }
    .os-lightbox-img { max-height: 64vh; border-radius: 14px; }
    .os-lightbox-title { font-size: 0.92rem; }
}

.os-btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    margin-top: 26px;
    font-size: 0.95rem;
    font-weight: 600;
    color: #fff;
    text-decoration: none;
    background: var(--os-blue);
    padding: 12px 24px;
    border-radius: 980px;
    transition: background 0.25s ease, transform 0.3s var(--os-ease-spring), box-shadow 0.3s ease;
}
    .os-btn:hover {
        color:#fff;
        background: #0263c5;
        transform: translateY(-2px);
        /* box-shadow: var(--os-shadow-blue); */
    }
    .os-btn i { transition: transform 0.3s var(--os-ease-spring); }
    .os-btn:hover i { transform: translateX(4px); }

/* ============================================================
   KURGULANMA AŞAMALARI (timeline + progress çizgisi)
   ============================================================ */
.os-steps {
    background: var(--os-bg-2);
}

.os-timeline {
    position: relative;
    max-width: 860px;
    margin: 72px auto 0;
    padding-left: 72px;
}

/* Sabit arka plan çizgisi */
.os-timeline-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 27px;
    width: 2px;
    background: var(--os-hairline);
    border-radius: 2px;
}
/* Scroll ile dolan progress çizgisi */
.os-timeline-progress {
    position: absolute;
    top: 0;
    left: 27px;
    width: 2px;
    height: 0%;
    background: var(--os-grad);
    border-radius: 2px;
    box-shadow: 0 0 14px rgba(10, 132, 255, 0.55);
    transition: height 0.15s linear;
}

.os-step {
    position: relative;
    padding: 34px 0;
}
    .os-step + .os-step { border-top: 1px dashed rgba(84, 84, 88, 0.35); }

/* Timeline işaret noktası */
.os-step-marker {
    position: absolute;
    left: -72px;
    top: 44px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--os-text-muted);
    background: var(--os-card);
    border: 2px solid var(--os-hairline);
    transition: color 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease, transform 0.4s var(--os-ease-spring);
}
    .os-step.is-active .os-step-marker {
        color: #fff;
        border-color: var(--os-blue);
        box-shadow: 0 0 0 6px rgba(10, 132, 255, 0.15), 0 0 22px rgba(10, 132, 255, 0.45);
        transform: scale(1.06);
    }

.os-step-card {
    background: var(--os-card);
    border: 1px solid var(--os-card-border);
    border-radius: 24px;
    padding: 34px 32px;
    transition: border-color 0.3s ease, background 0.3s ease, transform 0.4s var(--os-ease-spring);
}
    .os-step-card:hover {
        border-color: rgba(255, 255, 255, 0.22);
        background: var(--os-bg-3);
        transform: translateY(-3px);
    }
    .os-step-card h3 {
        font-size: clamp(1.25rem, 2vw, 1.6rem);
        font-weight: 600;
        letter-spacing: -0.015em;
        color: var(--os-text);
        margin: 0 0 12px;
    }
    .os-step-card p {
        font-size: 1rem;
        line-height: 1.7;
        color: var(--os-text-2);
        margin: 0;
    }

.os-step-media {
    margin-top: 22px;
    border-radius: 16px;
    overflow: hidden;
    border: 1px solid var(--os-card-border);
}
    .os-step-media img {
        display: block;
        width: 100%;
        height: auto;
        aspect-ratio: 16 / 8;
        object-fit: cover;
        transition: transform 0.8s var(--os-ease-spring);
    }
    .os-step-media:hover img { transform: scale(1.03); }

/* ============================================================
   SİSTEMİN SAĞLADIĞI FAYDALAR
   ============================================================ */
.os-benefits {
    background: var(--os-bg);
}
.os-benefits-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    margin-top: 64px;
    background: var(--os-hairline);
    border: 1px solid var(--os-hairline);
    border-radius: 24px;
    overflow: hidden;
}
.os-benefit {
    position: relative;
    overflow: hidden;
    background: var(--os-card);
    padding: 34px;
    min-height: 240px;
    transition: background 0.3s ease, opacity 0.7s var(--os-ease-spring), transform 0.7s var(--os-ease-spring);
}
    .os-benefit:hover { background: var(--os-bg-2); }
    .os-benefits-grid .os-benefit:nth-child(2) { transition-delay: 0s, 0.08s, 0.08s; }
    .os-benefits-grid .os-benefit:nth-child(3) { transition-delay: 0s, 0.16s, 0.16s; }
    .os-benefits-grid .os-benefit:nth-child(4) { transition-delay: 0s, 0.24s, 0.24s; }
    .os-benefits-grid .os-benefit:nth-child(5) { transition-delay: 0s, 0.32s, 0.32s; }
    .os-benefits-grid .os-benefit:nth-child(6) { transition-delay: 0s, 0.4s, 0.4s; }
.os-benefit-icon {
    position: absolute;
    right: -14px;
    bottom: -20px;
    font-size: 7rem;
    line-height: 1;
    color: #fff;
    opacity: 0.1;
    pointer-events: none;
    transform: rotate(-8deg);
    transition: opacity 0.4s ease, transform 0.5s var(--os-ease-spring);
}
    .os-benefit:hover .os-benefit-icon {
        opacity: 0.22;
        transform: rotate(0deg) scale(1.08);
    }
.os-benefit h3 {
    position: relative;
    font-size: 1.16rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    color: var(--os-text);
    margin: 0 0 12px;
}
.os-benefit p {
    position: relative;
    font-size: 0.95rem;
    line-height: 1.62;
    color: var(--os-text-2);
    margin: 0;
}

/* ============================================================
   CTA (koyu kapanış bölümü)
   ============================================================ */
.os-cta {
    background: var(--os-bg);
    background-image: radial-gradient(900px 480px at 50% 0%, rgba(10, 132, 255, 0.25), transparent 65%);
    padding: 150px 0 160px;
    text-align: center;
}
.os-cta h2 {
    font-size: clamp(2.1rem, 4.2vw, 3.2rem);
    font-weight: 600;
    letter-spacing: -0.025em;
    line-height: 1.12;
    margin: 0 0 20px;
    color: var(--os-text);
}
    .os-cta h2 .grad {
        background: var(--os-grad);
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }
.os-cta p {
    font-size: 1.1rem;
    color: var(--os-text-2);
    max-width: 620px;
    margin: 0 auto;
    line-height: 1.65;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .os-esys-layout { grid-template-columns: 1fr; gap: 40px; }
    .os-sol-row,
    .os-sol-row:nth-child(even) { grid-template-columns: 1fr; gap: 48px; padding: 84px 0; }
    .os-sol-row:nth-child(even) .os-sol-media { order: 0; }
    .os-sol-row:nth-child(even) .os-sol-body { order: 0; }
    .os-benefits-grid { grid-template-columns: repeat(2, 1fr); }
    .os-section { padding: 90px 0; }
    .os-manifesto { padding: 90px 0; }
}

@media (max-width: 640px) {
    .os-hero { padding: 76px 0 90px; min-height: auto; }
    .os-benefits-grid { grid-template-columns: 1fr; }
    .os-benefit { min-height: 0; }
    .os-timeline { padding-left: 52px; }
    .os-timeline-line,
    .os-timeline-progress { left: 19px; }
    .os-step-marker {
        left: -52px;
        width: 40px;
        height: 40px;
        font-size: 0.78rem;
        top: 40px;
    }
    .os-step-card { padding: 26px 22px; }
    .os-section { padding: 64px 0; }
    .container-os { padding: 0 20px; }
    .os-cta { padding: 100px 0 110px; }
}

/* Erişilebilirlik: hareket azaltma */
@media (prefers-reduced-motion: reduce) {
    .os-hero-badge::before,
    .os-hero-orb,
    .os-scroll,
    .os-esys-media img,
    .os-sol-media img,
    .os-step-media img {
        animation: none !important;
        transition: none !important;
    }
    .os-reveal, .os-hero-badge, .os-hero h1 .os-hero-word, .os-hero-sub {
        opacity: 1 !important;
        transform: none !important;
        animation: none !important;
    }
    .os-reveal-text { color: var(--os-text); }
    /* 3B veri halkası: hareket yok, statik sahne (JS zaten devre dışı) */
    .os-hero-stage {
        animation: none !important;
        opacity: 1 !important;
        transform: translateY(-50%) !important;
    }
    .os-stage-glow,
    .os-stage-core::before,
    .os-stage-core::after,
    .os-stage-tag::before {
        animation: none !important;
    }
    .os-hp { transition: none !important; }
    .os-hp.is-front .os-hp-card img { filter: none; }
    .os-stage-name.swap,
    .os-stage-tag.swap { animation: none; }
}

/* Klavye erişilebilirliği */
a:focus-visible, button:focus-visible, .os-btn:focus-visible {
    outline: 2px solid var(--os-blue);
    outline-offset: 3px;
    border-radius: 8px;
}