*, *::before, *::after {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        scroll-padding-top: 80px;
    }

    body {
        overflow-x: hidden;
    }

    /* Scroll reveal base — visible by default for progressive enhancement */
    .scroll-reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }

    @media (prefers-reduced-motion: no-preference) {
        .scroll-reveal.revealed {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Mobile menu */
    #mobile-menu {
        animation: slideDown 0.25s ease;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-8px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    /* Header scroll state */
    #site-header.scrolled {
        background: rgba(255, 255, 255, 0.97);
        backdrop-filter: blur(12px);
        box-shadow: 0 1px 20px rgba(0, 0, 0, 0.08);
    }

    /* FAQ accordion */
    .faq-item {
        transition: box-shadow 0.2s ease;
    }

    .faq-item:hover {
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    }

    .faq-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease, padding 0.35s ease;
    }

    .faq-content.open {
        max-height: 300px;
    }

    .faq-icon {
        flex-shrink: 0;
    }

    /* Back to top */
    #back-to-top.visible {
        opacity: 1;
        transform: translateY(0);
        pointer-events: auto;
    }

    /* Form focus styles */
    input:focus,
    select:focus,
    textarea:focus {
        outline: none;
    }

    /* Selection color */
    ::selection {
        background: #99f6e4;
        color: #042f2e;
    }