body {
    font-family: 'Montserrat', sans-serif;
    color: #1e293b;
    background:
        radial-gradient(circle at top, rgba(255, 255, 255, 0.65), transparent 30%),
        linear-gradient(180deg, #f8fbff 0%, #f8fafc 45%, #f8fafc 100%);
}

.site-header-shell {
    padding-top: 0.55rem;
    padding-bottom: 0.55rem;
}

.header-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.65rem;
}

.brand-link {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 0.7rem;
}

.brand-logo {
    height: 2.35rem;
    width: 2.35rem;
    flex-shrink: 0;
    border-radius: 0.9rem;
    object-fit: cover;
    box-shadow: 0 12px 26px rgba(15, 23, 42, 0.1);
}

.brand-title {
    font-size: 1.1rem;
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.03em;
    color: #172554;
}

.brand-subtitle {
    margin-top: 0.08rem;
    font-size: 0.7rem;
    font-weight: 500;
    line-height: 1.2;
    color: #64748b;
}

.site-nav {
    margin-top: 0.55rem;
    display: flex;
    gap: 0.3rem;
    overflow-x: auto;
    padding: 0.22rem;
    border: 1px solid rgba(203, 213, 225, 0.85);
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.82);
    box-shadow: 0 10px 26px rgba(148, 163, 184, 0.1);
    scrollbar-width: none;
}

.site-nav::-webkit-scrollbar {
    display: none;
}

.nav-link {
    flex-shrink: 0;
    padding: 0.58rem 0.82rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 700;
    line-height: 1;
    color: #475569;
    transition: background-color 160ms ease, color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}

.nav-link:hover {
    transform: translateY(-1px);
    background: #eff6ff;
    color: #1d4ed8;
}

.nav-link-active {
    background: linear-gradient(135deg, #1e3a8a 0%, #172554 100%);
    color: #ffffff;
    box-shadow: 0 14px 30px rgba(30, 58, 138, 0.22);
}

.nav-link-accent {
    background: linear-gradient(135deg, #06b6d4 0%, #0891b2 100%);
    color: #ffffff;
    box-shadow: 0 16px 32px rgba(8, 145, 178, 0.22);
}

.lang-switch {
    display: inline-flex;
    gap: 0.3rem;
    padding: 0.18rem;
    border: 1px solid rgba(203, 213, 225, 0.9);
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 8px 20px rgba(148, 163, 184, 0.12);
    flex-shrink: 0;
}

.lang-switch button {
    border: 0;
    background: transparent;
    color: #475569;
    padding: 0.42rem 0.62rem;
    border-radius: 9999px;
    font-size: 0.68rem;
    font-weight: 700;
    cursor: pointer;
}

.lang-switch button.is-active {
    background: linear-gradient(135deg, #1e3a8a 0%, #172554 100%);
    color: #ffffff;
    box-shadow: 0 8px 18px rgba(30, 58, 138, 0.2);
}

.eyebrow-primary {
    display: block;
    font-size: 1.75rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .eyebrow-primary {
        font-size: 2.75rem;
    }

    .site-header-shell {
        padding-top: 1rem;
        padding-bottom: 1rem;
    }

    .brand-logo {
        height: 3.1rem;
        width: 3.1rem;
    }

    .brand-title {
        font-size: 1.6rem;
    }

    .brand-subtitle {
        font-size: 0.9rem;
        margin-top: 0.18rem;
        line-height: 1.35;
    }

    .lang-switch button {
        padding: 0.55rem 0.9rem;
        font-size: 0.76rem;
    }

    .nav-link {
        padding: 0.78rem 1.1rem;
        font-size: 0.9rem;
    }
}

@media (min-width: 1024px) {
    .site-header-shell {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 1.5rem;
    }

    .header-top {
        gap: 1.1rem;
    }

    .site-nav {
        margin-top: 0;
        max-width: 100%;
    }
}

.hero-gradient {
    background:
        radial-gradient(circle at 0% 0%, rgba(59, 130, 246, 0.16), transparent 30%),
        radial-gradient(circle at 95% 15%, rgba(34, 211, 238, 0.16), transparent 24%),
        radial-gradient(circle at 65% 100%, rgba(99, 102, 241, 0.08), transparent 28%),
        linear-gradient(180deg, #eef5ff 0%, #f8fbff 52%, #ffffff 100%);
}

.glass-card {
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(10px);
    box-shadow: 0 24px 60px rgba(148, 163, 184, 0.18);
}

.hero-manifesto {
    position: relative;
    overflow: hidden;
}

.hero-manifesto::before {
    content: "";
    position: absolute;
    inset: 0 auto auto 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, rgba(37, 99, 235, 0.95) 0%, rgba(8, 145, 178, 0.5) 55%, rgba(255, 255, 255, 0) 100%);
}

.hero-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.7rem 1rem;
    border: 1px solid rgba(191, 219, 254, 0.9);
    border-radius: 9999px;
    background: rgba(255, 255, 255, 0.8);
    box-shadow: 0 14px 34px rgba(148, 163, 184, 0.12);
}

.kaydirma-alani::-webkit-scrollbar {
    width: 8px;
}

.kaydirma-alani::-webkit-scrollbar-track {
    background: #e2e8f0;
    border-radius: 8px;
}

.kaydirma-alani::-webkit-scrollbar-thumb {
    background: #94a3b8;
    border-radius: 8px;
}

.kaydirma-alani::-webkit-scrollbar-thumb:hover {
    background: #475569;
}

.faq-item summary {
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.status-box {
    border-radius: 1rem;
    padding: 1rem 1.25rem;
    border: 1px solid transparent;
}

.status-success {
    background: #ecfdf5;
    border-color: #86efac;
    color: #166534;
}

.status-error {
    background: #fef2f2;
    border-color: #fca5a5;
    color: #991b1b;
}