html[data-mode="professional"] {
    --bg: #f6f1e7;
    --surface: #ece4d3;
    --fg: #161312;
    --fg-muted: #3a322e;
    --surface-border: #2a221e;
    --accent: #c2410c;
    --fg-subtle: #6b5f55;

    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.65;

    /* hide dev-only elements */
    #end,
    .cmd,
    .term-bar {
        display: none;
    }

    body {
        overflow-y: scroll;
    }

    #wrapper {
        max-width: 75rem;
        border: 1px solid var(--surface-border);
        margin-left: auto;
        margin-right: auto;
    }

    main {
        margin: 0 auto;
        padding: 0 1.5rem 5rem;
    }

    .revealable {
        display: block;
    }

    #mode-toggle {
        background: rgba(246, 241, 231, 0.85);
        border: 1px solid var(--surface-border);
    }

    #mode-toggle button {
        color: var(--fg-subtle);
    }

    #mode-toggle button[aria-pressed="true"] {
        background: var(--fg);
        color: var(--bg);
    }

    ::selection {
        background: var(--accent);
        color: var(--bg);
    }

    .brand {
        display: flex;
        align-items: center;
        gap: 1.5rem;
        padding: 1.75rem clamp(1.25rem, 6vw, 5rem) 1.125rem;
        border-bottom: 1px solid var(--surface-border);
    }

    .brand-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 2.25rem;
        height: 2.25rem;
        background: var(--fg);
        color: var(--bg);
        font-family: var(--font-display);
        font-weight: 700;
        font-size: 0.875rem;
        border-radius: 0.25rem;
    }

    .brand-name {
        font-family: var(--font-display);
        font-weight: 500;
        font-size: 1rem;
    }

    .nav {
        margin-left: auto;
        display: flex;
        gap: 1.75rem;
        font-size: 0.875rem;
    }

    .nav a {
        text-decoration: none;
        color: var(--fg-muted);
        padding: 0.25rem 0;
        border-bottom: 1px solid transparent;
        transition: border-color 0.3s ease, color 0.2s ease;
    }

    .nav a:hover {
        color: var(--accent);
        border-color: var(--accent);
    }

    :is(.eyebrow, .about-body .card h3, .skills dt, .link-label) {
        font-family: var(--font-mono);
        font-size: 0.75rem;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--accent);
    }

    .eyebrow {
        margin: 0 0 1.75rem;
    }

    .eyebrow::before {
        content: attr(data-num) " · " attr(data-tagline);
    }

    #hero {
        padding: 3.75rem 0 5rem;
    }

    #hero .eyebrow::before {
        content: "Solutions Engineering · Architecture · Seattle, WA";
    }

    .heading {
        font-family: var(--font-display);
        font-weight: 500;
        line-height: 1.05;
        letter-spacing: -0.015em;
        margin: 0 0 1.75rem;
    }

    #hero .heading {
        font-size: clamp(2.5rem, 6.4vw, 5.25rem);
        font-variation-settings: "opsz" 72;
    }

    #hero .heading em {
        font-style: italic;
        color: var(--accent);
        font-weight: 500;
    }

    section:not(#hero) .heading {
        font-size: clamp(2rem, 4vw, 3rem);
    }

    section:not(#hero) {
        padding: 2rem 0 4rem;
        border-top: 1px solid var(--surface-border);
    }

    section:not(#hero) .eyebrow {
        margin-inline: auto;
        width: fit-content;
    }

    section:not(#hero) .heading {
        display: inline;
    }

    section:not(#hero) .body {
        margin-top: 3rem;
    }

    /* body */
    .body p {
        margin: 0 0 1em;
        color: var(--fg-muted);
    }

    .body p strong {
        color: var(--fg);
        font-weight: 600;
    }

    .body em {
        color: var(--accent);
        font-style: italic;
    }

    .body a {
        color: var(--accent);
        text-decoration: none;
        border-bottom: 1px solid currentColor;
    }

    .lede {
        font-size: clamp(18px, 2vw, 22px);
        max-width: 42.5rem;
        color: var(--fg-muted);
        margin: 0 0 2.25rem;
    }

    .chips {
        list-style: none;
        padding: 0;
        margin: 0;
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
    }

    .chips li {
        padding: 0.375rem 0.75rem;
        border: 1px solid var(--surface-border);
        border-radius: 999px;
        font-size: 0.813rem;
        transition: background 0.2s, color 0.2s;
    }

    .chips li:hover {
        background: var(--fg);
        color: var(--bg);
        cursor: default;
    }

    .about-body {
        display: grid;
        grid-template-columns: 1.6fr 1fr;
        gap: 3.5rem;
    }

    .about-body .card {
        background: var(--surface);
        border: 1px solid var(--surface-border);
        padding: 1.75rem;
        border-radius: 0.25rem;
        font-size: 0.875rem;
    }

    .about-body .card h3 {
        margin: 0 0 0.75rem;
    }

    .about-body .card ul {
        list-style: none;
        margin: 0;
        padding: 0;
    }

    .about-body .card li {
        padding: 0.375rem 0;
        border-bottom: 1px dashed var(--surface-border);
    }

    .about-body .card li:last-child {
        border-bottom: 0;
    }

    .timeline {
        list-style: none;
        padding: 0;
        margin: 0;
        position: relative;
    }

    .timeline::before {
        content: "";
        position: absolute;
        left: 8.125rem;
        top: 0.5rem;
        bottom: 0.5rem;
        width: 1px;
        background: var(--surface-border);
    }

    .timeline li {
        display: grid;
        grid-template-columns: 8.125rem 1fr;
        gap: 2.25rem;
        padding: 1.25rem 0 1.75rem;
        position: relative;
    }

    .timeline li::before {
        content: "";
        position: absolute;
        left: 7.75rem;
        top: 1.75rem;
        width: 0.75rem;
        height: 0.75rem;
        border-radius: 50%;
        background: var(--bg);
        border: 2px solid var(--accent);
    }

    .timeline li:first-child::before {
        background: var(--accent);
    }

    .timeline .when {
        font-family: var(--font-mono);
        font-size: 0.75rem;
        padding-top: 1.75rem;
        color: var(--fg-subtle);
    }

    .timeline .role,
    .timeline .org,
    .timeline .what {
        grid-column: 2;
    }

    .timeline .role {
        font-family: var(--font-display);
        font-weight: 500;
        font-size: 1.375rem;
        margin: 0 0 0.25rem;
    }

    .timeline .org {
        font-family: var(--font-mono);
        font-size: 0.75rem;
        color: var(--accent);
        margin: 0 0 0.625rem;
    }

    .timeline .what {
        margin: 0;
        color: var(--fg-muted);
    }

    .schools {
        list-style: none;
        padding: 0;
        margin: 0;
    }

    .schools dl {
        padding: 0.75rem 0;
        border-bottom: 1px dashed var(--surface-border);
    }

    .schools dl:last-child {
        border-bottom: 0;
    }

    .schools .school {
        font-family: var(--font-display);
        font-weight: 500;
        font-size: 1.375rem;
        margin: 0;
        display: inline;
    }

    .schools .fields {
        display: grid;
        grid-template-columns: max-content auto;
        gap: 1em;
        padding: 0.3em 0;
        margin-left: 0.75rem;
        color: var(--fg-subtle);
        font-size: 0.938rem;
    }

    .schools .fields dt {
        grid-column-start: 1;
    }

    .schools .fields dt::before {
        content: "▸ ";
    }

    .schools .fields dd {
        grid-column-start: 2;
    }

    .skills {
        display: grid;
        grid-template-columns: max-content auto;
        gap: 1.5rem;
        margin: 0;
    }

    .skills dt {
        grid-column-start: 1;
        margin-bottom: 0.5rem;
    }

    .skills dt::before {
        content: "▸ ";
    }

    .skills dd {
        grid-column-start: 2;
        margin: 0;
        font-size: 1rem;
        color: var(--fg-muted);
    }

    .links {
        list-style: none;
        padding: 0;
        margin: 0;
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(12.5rem, 1fr));
        border-top: 1px solid var(--surface-border);
    }

    .links li:first-child {
        border-left: 1px solid var(--surface-border);
    }

    .links li {
        border-bottom: 1px solid var(--surface-border);
        border-right: 1px solid var(--surface-border);
    }

    .links a {
        display: flex;
        flex-direction: column;
        gap: 0.25rem;
        padding: 1.125rem 0.25rem;
        text-decoration: none;
        color: var(--fg);
        position: relative;
        overflow: hidden;
        transition: padding 0.25s ease, color 0.25s ease;
        align-items: center;
    }

    .links a::before {
        content: "";
        position: absolute;
        inset: 0;
        background: var(--fg);
        transform: translateY(101%);
        transition: transform 0.3s ease;
        z-index: -1;
    }

    .links a:hover {
        padding-left: 0.875rem;
        color: var(--bg);
    }

    .links a:hover::before {
        transform: translateY(0);
    }

    .link-value {
        font-family: var(--font-display);
        font-size: 1.25rem;
    }

    @media (max-width: 760px) {
        .brand {
            flex-wrap: wrap;
        }

        .nav {
            width: 100%;
            gap: 1.125rem;
        }

        .about-body {
            grid-template-columns: 1fr;
            gap: 2rem;
        }

        .timeline::before {
            left: 0.5rem;
        }

        .timeline li {
            grid-template-columns: 1fr;
            gap: 0.375rem;
            padding-left: 1.75rem;
        }

        .timeline li::before {
            left: 1px;
            top: 0.375rem;
        }

        .timeline .when {
            padding-top: 0;
        }
    }
}