:root{
    --nda-bg:#eef1f6;
    --nda-surface:#ffffff;
    --nda-surface-soft:rgba(255,255,255,0.78);
    --nda-text:#0f1932;
    --nda-muted:#60718f;
    --nda-line:rgba(15,25,50,0.08);
    --nda-primary:#5a67ff;
    --nda-green:#d8f5e8;
    --nda-green-text:#16814f;
    --nda-shadow:0 24px 70px rgba(15,25,50,0.12);
    --nda-shadow-soft:0 18px 48px rgba(15,25,50,0.08);
    --nda-shell:1200px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:"Inter",sans-serif;
    color:var(--nda-text);
    background:
        radial-gradient(circle at top right, rgba(110,233,184,0.14), transparent 26%),
        linear-gradient(180deg, #f3f5fa 0%, #eef1f6 100%);
}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
button{font:inherit}

.nda-shell{width:min(calc(100% - 48px), var(--nda-shell));margin:0 auto}

.nda-site-header{
    position:sticky;top:0;z-index:50;padding:18px 0;
    background:rgba(243,245,250,0.82);backdrop-filter:blur(14px);
    border-bottom:1px solid rgba(255,255,255,0.45);
}
.nda-nav{display:flex;align-items:center;justify-content:space-between;gap:24px}
.nda-brand img{height:38px;width:auto}
.nda-nav-links{display:flex;align-items:center;gap:28px;margin-left:auto}
.nda-nav-links>a,.nda-nav-dropdown>button{
    border:0;background:none;padding:0;color:#273759;font-weight:500;cursor:pointer;
}
.nda-nav-links>a.is-active{color:var(--nda-primary);font-weight:700}
.nda-nav-cta{
    display:inline-flex;align-items:center;justify-content:center;padding:14px 22px;border-radius:999px;
    background:linear-gradient(135deg,#5d6bff 0%,#6f7cf8 100%);color:#fff;font-weight:700;
    box-shadow:0 14px 30px rgba(90,103,255,0.28);
}
.nda-nav-cta-mobile{display:none}
.nda-nav-toggle{display:none}
.nda-nav-burger{display:none}
.nda-nav-dropdown{position:relative}
.nda-nav-dropdown::after{
    content:"";
    position:absolute;
    left:0;
    right:0;
    top:100%;
    height:12px;
}
.nda-dropdown-menu{
    position:absolute;top:100%;left:0;min-width:220px;padding:12px;border-radius:18px;
    background:rgba(255,255,255,0.94);border:1px solid rgba(15,25,50,0.08);
    box-shadow:var(--nda-shadow-soft);opacity:0;pointer-events:none;transform:translateY(8px);
    transition:all .22s ease;
}
.nda-dropdown-menu a{display:block;padding:12px 14px;border-radius:12px;color:#273759}
.nda-dropdown-menu a:hover{background:rgba(90,103,255,0.08);color:var(--nda-primary)}
.nda-nav-dropdown:hover .nda-dropdown-menu{opacity:1;pointer-events:auto;transform:translateY(0)}

.nda-eyebrow,.nda-section-kicker{
    display:inline-flex;align-items:center;padding:10px 14px;border-radius:999px;
    border:1px solid rgba(90,103,255,0.12);background:rgba(90,103,255,0.07);
    color:var(--nda-primary);font-size:13px;font-weight:800;letter-spacing:.02em;
}
.nda-section-kicker{margin-bottom:16px}
.nda-section-kicker-light{
    background:rgba(255,255,255,0.12);border-color:rgba(255,255,255,0.15);color:#d9e2ff;
}

.nda-about-hero{padding:54px 0 48px}
.nda-hero-panel{
    position:relative;
    display:grid;
    grid-template-columns:minmax(0, 1fr) minmax(340px, 500px);
    gap:56px;
    align-items:center;
    border-radius:40px;
    background:linear-gradient(145deg, rgba(255,255,255,0.78) 0%, rgba(255,255,255,0.58) 100%);
    border:1px solid rgba(255,255,255,0.6);
    box-shadow:var(--nda-shadow);
    overflow:hidden;
    padding:54px;
}
.nda-hero-panel::before{
    content:"";
    position:absolute;inset:0;
    background:
        radial-gradient(circle at 15% 15%, rgba(90,103,255,0.08), transparent 22%),
        radial-gradient(circle at 85% 25%, rgba(110,233,184,0.12), transparent 22%),
        linear-gradient(rgba(15,25,50,0.035) 1px, transparent 1px),
        linear-gradient(90deg, rgba(15,25,50,0.035) 1px, transparent 1px);
    background-size:auto, auto, 38px 38px, 38px 38px;
    pointer-events:none;
}
.nda-hero-copy{
    position:relative;
    z-index:2;
    max-width:560px;
}
.nda-hero-copy h1{
    margin:18px 0 20px;
    font-size:clamp(3rem, 6.2vw, 5.5rem);
    line-height:.95;
    letter-spacing:-0.05em;
    max-width:10ch;
}
.nda-hero-lead{
    margin:0;
    max-width:56ch;
    font-size:1.24rem;
    line-height:1.74;
    color:var(--nda-muted);
}

.nda-hero-visual-wrap{
    position:relative;
    z-index:2;
    display:flex;
    justify-content:center;
}
.nda-hero-visual{
    width:100%;
    max-width:500px;
}
.nda-hero-device{
    position:relative;
    width:100%;
    padding:34px 34px 0;
    border-radius:38px;
    background:linear-gradient(180deg, #1b2c6e 0%, #152458 100%);
    box-shadow:0 28px 60px rgba(20,36,88,0.25);
    overflow:hidden;
}
.nda-hero-device::after{
    content:"";
    position:absolute;inset:0;
    background:
        radial-gradient(circle at 70% 20%, rgba(110,233,184,0.10), transparent 26%),
        linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0));
    pointer-events:none;
}
.nda-hero-device img{
    position:relative;z-index:1;
    width:100%;
    max-height:460px;
    object-fit:contain;
    object-position:center bottom;
}

.nda-about-explainer{padding:44px 0 40px}

.nda-about-explainer-grid{
    align-items:start;
}
.nda-about-explainer-copy h2,.nda-platform-intro h2{
    margin:0 0 18px;font-size:clamp(2.3rem,4.6vw,4.1rem);
    line-height:1.02;letter-spacing:-0.04em;
}
.nda-about-explainer-copy p,.nda-platform-intro p,.nda-platform-point p{
    margin:0 0 22px;color:var(--nda-muted);font-size:1.18rem;line-height:1.78;
}
.nda-benefits-stack{display:grid;gap:18px}
.nda-benefit-card{
    padding:28px 28px 26px;border-radius:24px;background:rgba(255,255,255,0.78);
    border:1px solid rgba(255,255,255,0.65);box-shadow:var(--nda-shadow-soft);
}
.nda-benefit-card h3{margin:0 0 12px;font-size:1.55rem;line-height:1.1}
.nda-benefit-card p{margin:0;color:var(--nda-muted);font-size:1.08rem;line-height:1.72}

.nda-about-platform{padding:32px 0 86px}
.nda-about-platform-grid{
    display:grid;grid-template-columns:.95fr 1.05fr;gap:28px;align-items:start;
}
.nda-platform-intro{
    padding:30px;border-radius:32px;
    background:linear-gradient(160deg, rgba(32,46,106,0.98) 0%, rgba(60,79,183,0.95) 100%);
    box-shadow:0 28px 60px rgba(22,34,86,0.22);
}
.nda-platform-intro h2,.nda-platform-intro p{color:#fff}
.nda-platform-intro p{opacity:.85}
.nda-platform-points{display:grid;gap:18px}
.nda-platform-point{
    padding:26px 26px 24px;border-radius:24px;background:rgba(255,255,255,0.82);
    border:1px solid rgba(255,255,255,0.6);box-shadow:var(--nda-shadow-soft);
}
.nda-platform-point strong{display:block;margin-bottom:10px;font-size:1.28rem;line-height:1.2}
.nda-platform-point p{margin:0}

.nda-about-cta{padding:0 0 92px}
.nda-about-cta-inner{
    display:flex;align-items:center;justify-content:space-between;gap:28px;padding:36px;border-radius:34px;
    background:linear-gradient(135deg,#111d49 0%,#243a8e 100%);
    box-shadow:0 28px 60px rgba(16,29,73,0.22);
}
.nda-about-cta-inner h2{
    margin:0 0 10px;color:#fff;font-size:clamp(2rem,4vw,3.2rem);line-height:1.02;letter-spacing:-0.04em;
}
.nda-about-cta-inner p{margin:0;color:rgba(255,255,255,0.78);font-size:1.08rem;line-height:1.65}
.nda-cta-actions{display:flex;gap:14px;flex-wrap:wrap}
.nda-primary-btn,.nda-secondary-btn{
    display:inline-flex;align-items:center;justify-content:center;min-height:56px;padding:0 22px;border-radius:999px;font-weight:700;
}
.nda-primary-btn{background:#fff;color:#122156}
.nda-secondary-btn{background:rgba(255,255,255,0.08);border:1px solid rgba(255,255,255,0.16);color:#fff}

.nda-site-footer{padding:0 0 34px}
.nda-footer-top{
    display:grid;grid-template-columns:1.2fr .8fr;gap:28px;padding:34px 0 28px;border-top:1px solid var(--nda-line);
}
.nda-footer-brand img{height:38px;margin-bottom:16px}
.nda-footer-brand p{margin:0;color:var(--nda-muted);line-height:1.75;max-width:640px}
.nda-footer-links{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.nda-footer-links h3{margin:0 0 14px;font-size:1rem}
.nda-footer-links a{display:block;margin-bottom:10px;color:var(--nda-muted)}
.nda-footer-bottom{padding-top:18px;border-top:1px solid var(--nda-line)}
.nda-footer-bottom p{margin:0;color:var(--nda-muted);font-size:.95rem}

@media (max-width: 1099px){
    .nda-about-explainer-grid,.nda-about-platform-grid,.nda-footer-top{grid-template-columns:1fr}
    .nda-hero-panel{grid-template-columns:1fr;padding:40px}
    .nda-hero-copy{max-width:none}
    .nda-hero-copy h1{max-width:none}
    .nda-hero-visual-wrap{display:none}
}
@media (max-width: 900px){
    .nda-site-header{padding:14px 0}
    .nda-nav-burger{
        display:inline-flex;width:48px;height:48px;border-radius:14px;background:rgba(255,255,255,0.74);
        border:1px solid rgba(15,25,50,0.08);align-items:center;justify-content:center;flex-direction:column;gap:5px;
        cursor:pointer;margin-left:auto;
    }
    .nda-nav-burger span{width:20px;height:2px;background:#1d2a4d;border-radius:999px}
    .nda-nav-links{
        position:absolute;top:calc(100% + 10px);left:24px;right:24px;display:none;flex-direction:column;
        align-items:flex-start;gap:0;padding:14px;border-radius:22px;background:rgba(255,255,255,0.94);
        border:1px solid rgba(15,25,50,0.08);box-shadow:var(--nda-shadow-soft);
    }
    .nda-nav-links>a,.nda-nav-dropdown>button{width:100%;padding:12px 10px}
    .nda-nav-cta-desktop{display:none}
    .nda-nav-cta-mobile{display:inline-flex;margin-top:10px}
    .nda-nav-toggle:checked ~ .nda-nav-links{display:flex}
    .nda-nav-dropdown{width:100%}
    .nda-dropdown-menu{
        position:static;opacity:1;pointer-events:auto;transform:none;min-width:0;margin-top:4px;box-shadow:none;
        background:rgba(90,103,255,0.04);display:block;
    }
    .nda-about-cta-inner{flex-direction:column;align-items:flex-start}
}
@media (max-width: 640px){
    .nda-shell{width:min(calc(100% - 28px), var(--nda-shell))}
    .nda-about-hero{padding:38px 0 34px}
    .nda-hero-panel{padding:24px;border-radius:28px}
    .nda-hero-lead,
    .nda-about-explainer-copy p,.nda-platform-intro p,.nda-platform-point p,.nda-benefit-card p{
        font-size:1rem;line-height:1.72;
    }
    .nda-hero-device{padding:18px 18px 0;border-radius:26px}
    .nda-hero-device img{max-height:260px}
    .nda-benefit-card,.nda-platform-point,.nda-platform-intro{padding:22px;border-radius:20px}
    .nda-about-cta-inner{padding:26px 22px;border-radius:26px}
    .nda-footer-links{grid-template-columns:1fr}
}