* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            color: #374151;
            background: #ffffff;
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 720px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        header {
            padding: 80px 0 60px;
            text-align: center;
            border-bottom: 1px solid #e5e7eb;
        }

        .logo {
            font-size: 2.4rem;
            font-weight: 700;
            color: #111827;
            letter-spacing: -0.5px;
        }

        .logo span {
            color: #2563eb;
        }

        .tagline {
            margin-top: 12px;
            font-size: 1.1rem;
            color: #6b7280;
            font-weight: 400;
        }

        /* Sections */
        section {
            padding: 48px 0;
            border-bottom: 1px solid #e5e7eb;
        }

        section:last-of-type {
            border-bottom: none;
        }

        h2 {
            font-size: 1.25rem;
            font-weight: 600;
            color: #111827;
            margin-bottom: 16px;
        }

        h2::before {
            content: '';
            display: inline-block;
            width: 3px;
            height: 20px;
            background: #2563eb;
            margin-right: 12px;
            vertical-align: middle;
            border-radius: 2px;
        }

        p {
            margin-bottom: 12px;
            color: #4b5563;
        }

        a {
            color: #2563eb;
            text-decoration: none;
        }

        a:hover {
            text-decoration: underline;
        }

        /* About */
        .about p:last-child {
            margin-bottom: 0;
        }

        /* Services grid */
        .services-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
            margin-top: 8px;
        }

        .services-grid h3 {
            font-size: 1.05rem;
            font-weight: 600;
            color: #111827;
            margin-bottom: 12px;
        }

        .services-grid ul {
            list-style: none;
            padding: 0;
        }

        .services-grid ul li {
            padding: 6px 0;
            padding-left: 20px;
            position: relative;
            color: #4b5563;
            font-size: 0.95rem;
        }

        .services-grid ul li::before {
            content: '\25B8';
            position: absolute;
            left: 0;
            color: #2563eb;
            font-size: 0.85rem;
        }

        /* Approach steps */
        .approach-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-top: 8px;
        }

        .step {
            text-align: center;
            padding: 20px 12px;
            background: #f9fafb;
            border-radius: 8px;
            border: 1px solid #e5e7eb;
        }

        .step .number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            background: #2563eb;
            color: #fff;
            border-radius: 50%;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .step .label {
            display: block;
            font-size: 0.95rem;
            font-weight: 600;
            color: #111827;
        }

        .step .desc {
            display: block;
            font-size: 0.85rem;
            color: #6b7280;
            margin-top: 4px;
        }

        /* Frameworks list */
        .frameworks-list {
            list-style: none;
            padding: 0;
            columns: 2;
            column-gap: 32px;
        }

        .frameworks-list li {
            padding: 6px 0;
            padding-left: 20px;
            position: relative;
            color: #4b5563;
            font-size: 0.95rem;
        }

        .frameworks-list li::before {
            content: '\25B8';
            position: absolute;
            left: 0;
            color: #2563eb;
            font-size: 0.85rem;
        }

        /* Contact / PGP */
        .contact-item {
            display: flex;
            align-items: baseline;
            gap: 12px;
            margin-bottom: 12px;
        }

        .contact-label {
            font-weight: 600;
            color: #111827;
            min-width: 130px;
            flex-shrink: 0;
        }

        .fingerprint {
            font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
            font-size: 0.9rem;
            color: #2563eb;
            letter-spacing: 0.5px;
        }

        .pgp-block {
            margin-top: 24px;
            position: relative;
        }

        .pgp-block pre {
            background: #f9fafb;
            border: 1px solid #e5e7eb;
            border-radius: 8px;
            padding: 20px;
            font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
            font-size: 0.8rem;
            line-height: 1.5;
            overflow-x: auto;
            color: #374151;
            white-space: pre-wrap;
            word-break: break-all;
        }

        .btn-group {
            display: flex;
            gap: 10px;
            margin-top: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 0.9rem;
            font-weight: 500;
            cursor: pointer;
            border: none;
            transition: all 0.15s ease;
        }

        .btn-primary {
            background: #2563eb;
            color: #ffffff;
        }

        .btn-primary:hover {
            background: #1d4ed8;
        }

        .btn-secondary {
            background: #f3f4f6;
            color: #374151;
            border: 1px solid #d1d5db;
        }

        .btn-secondary:hover {
            background: #e5e7eb;
        }

        .btn svg {
            width: 16px;
            height: 16px;
        }

        .copied {
            background: #059669 !important;
            color: #ffffff !important;
            border-color: #059669 !important;
        }

        /* Disclosure */
        .disclosure-list {
            list-style: none;
            padding: 0;
        }

        .disclosure-list li {
            padding: 10px 0;
            padding-left: 24px;
            position: relative;
            color: #4b5563;
        }

        .disclosure-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 18px;
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #2563eb;
            opacity: 0.6;
        }

        /* Language toggle */
        .lang-toggle {
            position: absolute;
            top: 32px;
            right: 24px;
            display: flex;
            gap: 0;
            border: 1px solid #d1d5db;
            border-radius: 6px;
            overflow: hidden;
        }

        .lang-btn {
            padding: 6px 14px;
            font-size: 0.8rem;
            font-weight: 500;
            cursor: pointer;
            border: none;
            background: #f9fafb;
            color: #6b7280;
            transition: all 0.15s ease;
        }

        .lang-btn:first-child {
            border-right: 1px solid #d1d5db;
        }

        .lang-btn.active {
            background: #2563eb;
            color: #ffffff;
        }

        .lang-btn:hover:not(.active) {
            background: #e5e7eb;
        }

        /* Footer */
        footer {
            padding: 32px 0;
            text-align: center;
            color: #9ca3af;
            font-size: 0.85rem;
        }

        /* Responsive */
        @media (max-width: 600px) {
            header {
                padding: 90px 0 40px;
            }

            .logo {
                font-size: 1.8rem;
            }

            .tagline {
                font-size: 1rem;
            }

            section {
                padding: 36px 0;
            }

            .services-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .approach-steps {
                grid-template-columns: 1fr 1fr;
            }

            .frameworks-list {
                columns: 1;
            }

            .contact-item {
                flex-direction: column;
                gap: 4px;
            }

            .contact-label {
                min-width: auto;
            }

            .fingerprint {
                font-size: 0.78rem;
            }
        }

/* --- utility classes (voorheen inline style="") --- */
.container { position: relative; }
.post-date { display: block; font-size: 0.85rem; color: #9ca3af; margin-top: 2px; }
.mt-16 { margin-top: 16px; }
.mt-8 { margin-top: 8px; }