src/components/course/hackathon/HackathonTaskPage.scss

// Hackathon task page: steps on the left, a sticky code panel on the right that
// follows the step in view (the Stripe Docs quickstart pattern), in the /course
// visual language. Colours come only from the global brand tokens.

.hk-task {
    --hk-nav: 64px;
    --hk-bar: 58px;
    --hk-stick: calc(var(--home-next-banner-height, 0px) + var(--hk-nav) + var(--hk-bar));
    --hk-wrap: min(1320px, calc(100vw - 112px));

    position: relative;
    padding-bottom: 88px;
    background: var(--brand-cream-light);
    color: var(--brand-ink);
    font-family: var(--font-family-base);
    font-size: 17px;
    line-height: 1.65;

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

// Infima / Tailwind resets, scoped. `:where()` keeps them at one class of
// specificity: above the element-level globals, below every component rule
// that follows.
.hk-task :where(h1, h2, h3, h4, p, ul, ol, dl, dd, figure, pre, table) {
    margin: 0;
}

.hk-task :where(h1, h2, h3, h4) {
    color: var(--brand-ink);
    font-family: var(--font-family-base);
}

.hk-task :where(ul, ol) {
    padding: 0;
    list-style: none;
}

.hk-task :where(small) {
    font-size: inherit;
}

.hk-task :where(img) {
    display: block;
    max-width: 100%;
}

.hk-task :where(a) {
    color: var(--brand-link);
    text-decoration: underline;
    text-decoration-thickness: 1.5px;
    text-underline-offset: 3px;
}

.hk-task :where(a):hover {
    color: var(--brand-ink);
    text-decoration: underline;
}

.hk-task :where(a, button, input, [tabindex]):focus-visible {
    outline: 3px solid var(--brand-primary-glow);
    outline-offset: 3px;
}

.hk-task :where(button) {
    flex: none;
    margin: 0;
    font: inherit;
    cursor: pointer;
}

.hk-task :where(svg) {
    flex: none;
}

// Inline code inside prose.
.hk-task :where(p, li, td, dd, label, span) code {
    padding: 1px 6px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 6px;
    background: var(--brand-surface-note);
    color: var(--brand-ink);
    font-family: var(--font-mono);
    font-size: 0.84em;
    font-variant-ligatures: none;
    vertical-align: baseline;
    overflow-wrap: anywhere;
}

.hk-task__wrap {
    width: var(--hk-wrap);
    margin: 0 auto;
}

// ---------------------------------------------------------------------------
// Shared atoms
// ---------------------------------------------------------------------------

.hk-task__label {
    color: var(--brand-primary-deep);
    font: 800 12px/1.3 var(--font-mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hk-task__tba {
    display: inline-flex;
    align-items: center;
    padding: 2px 9px;
    border: 2px dashed var(--brand-ink);
    border-radius: 999px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 800 12px/1.4 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    white-space: nowrap;

    &--code {
        padding: 0 7px;
        border-color: var(--brand-accent);
        background: transparent;
        color: var(--brand-accent);
        line-height: 1.5;
    }
}

.hk-task__btn {
    display: inline-flex;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 0 20px;
    border: 2px solid var(--brand-ink);
    border-radius: 14px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 800 14px/1.1 var(--font-mono);
    letter-spacing: 0.02em;
    text-align: left;
    transition:
        transform 0.12s,
        box-shadow 0.12s;

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

    &--primary {
        background: var(--brand-primary);
        box-shadow: 0 5px 0 var(--brand-ink);
        color: var(--brand-cream-light);

        &:hover {
            transform: translateY(-2px);
        }

        &:active {
            box-shadow: 0 1px 0 var(--brand-ink);
            transform: translateY(4px);
        }
    }

    &--tba {
        flex-direction: column;
        align-items: flex-start;
        justify-content: center;
        gap: 6px;
        padding: 8px 16px;
        border-style: dashed;
        background: transparent;
        cursor: not-allowed;

        .hk-task__tba {
            padding: 1px 8px;
            border-width: 1.5px;
        }
    }

    &--sm {
        min-height: 38px;
        gap: 8px;
        padding: 0 12px;
        border-radius: 10px;
        font-size: 12px;
        letter-spacing: 0.05em;
        text-transform: uppercase;

        &:hover {
            background: var(--brand-surface-note);
        }
    }

    &.is-done {
        background: var(--brand-accent);
        color: var(--brand-ink);
    }
}

.hk-task a.hk-task__btn,
.hk-task a.hk-task__btn:hover {
    color: var(--brand-ink);
    text-decoration: none;
}

.hk-task a.hk-task__btn--primary,
.hk-task a.hk-task__btn--primary:hover {
    color: var(--brand-cream-light);
}

// ---------------------------------------------------------------------------
// Top bar (sticky under the site navbar)
// ---------------------------------------------------------------------------

.hk-task__bar {
    position: sticky;
    top: calc(var(--home-next-banner-height, 0px) + var(--hk-nav));
    z-index: 60;
    border-bottom: 1px solid var(--brand-border-soft);
    background: var(--brand-paper);
}

.hk-task__bar-in {
    display: flex;
    min-height: var(--hk-bar);
    align-items: center;
    gap: 18px;
}

.hk-task a.hk-task__back {
    display: inline-flex;
    min-height: 38px;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 9px;
    background: var(--brand-surface-soft);
    color: var(--brand-ink);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.08em;
    text-decoration: none;
    text-transform: uppercase;

    &:hover {
        border-color: var(--brand-ink);
        color: var(--brand-ink);
        text-decoration: none;
    }

    svg {
        width: 14px;
        height: 14px;
    }
}

.hk-task__tag {
    flex: none;
    padding: 6px 10px;
    border: 2px solid var(--brand-ink);
    border-radius: 999px;
    background: var(--brand-accent);
    box-shadow: 0 3px 0 var(--brand-ink);
    color: var(--brand-ink);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    white-space: nowrap;
}

.hk-task .hk-task__event {
    display: flex;
    min-width: 0;
    align-items: center;
    gap: 12px;
    color: var(--brand-ink-soft);
    font-size: 14px;
    line-height: 1.3;

    > span {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

// ---------------------------------------------------------------------------
// Task switcher
// ---------------------------------------------------------------------------

.hk-task__switch {
    padding-top: 16px;
}

.hk-task__switch-in {
    display: grid;
    grid-template-columns: auto repeat(5, minmax(0, 1fr));
    align-items: stretch;
    gap: 10px;
}

.hk-task__switch-label {
    align-self: center;
    padding-right: 4px;
}

.hk-task a.hk-task__switch-item {
    display: grid;
    min-width: 0;
    grid-template-columns: 34px minmax(0, 1fr);
    align-items: center;
    gap: 1px 10px;
    padding: 9px 12px 9px 9px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 14px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    text-decoration: none;
    transition:
        border-color 0.15s,
        transform 0.15s;

    &:hover {
        border-color: var(--brand-primary);
        color: var(--brand-ink);
        text-decoration: none;
        transform: translateY(-2px);
    }

    &[aria-current='page'] {
        padding: 8px 11px 8px 8px;
        border: 2px solid var(--brand-primary);
        background: var(--brand-surface-note);

        .hk-task__switch-code {
            border-color: var(--brand-ink);
            background: var(--brand-accent);
            box-shadow: 0 3px 0 var(--brand-ink);
            color: var(--brand-ink);
        }
    }
}

.hk-task__switch-code {
    display: grid;
    width: 34px;
    height: 34px;
    grid-row: span 2;
    place-items: center;
    border: 2px solid var(--brand-border-soft);
    border-radius: 10px;
    background: var(--brand-paper);
    color: var(--brand-primary-deep);
    font: 800 12px/1 var(--font-mono);
}

.hk-task__switch-name {
    overflow: hidden;
    font-size: 14px;
    font-weight: 800;
    line-height: 1.25;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hk-task__switch-time {
    color: var(--brand-ink-soft);
    font: 700 12px/1.2 var(--font-mono);
}

// ---------------------------------------------------------------------------
// Two-pane grid and hero
// ---------------------------------------------------------------------------

.hk-task__grid {
    display: grid;
    grid-template-columns: minmax(0, 560px) minmax(0, 1fr);
    align-items: start;
    gap: 48px;
    padding-top: 26px;
}

.hk-task__main {
    min-width: 0;
}

.hk-task__hero {
    display: flex;
    flex-direction: column;
    gap: 18px;
    scroll-margin-top: calc(var(--hk-stick) + 20px);

    h1 {
        margin-top: 6px;
        color: var(--brand-ink);
        font: 800 clamp(52px, 5vw, 74px) / 0.92 var(--font-mono);
        letter-spacing: -0.075em;
        text-transform: uppercase;

        span {
            display: block;
            color: var(--brand-primary-deep);
        }
    }
}

.hk-task__eyebrow {
    display: inline-flex;
    align-self: flex-start;
    padding: 9px 13px;
    border: 2px solid var(--brand-ink);
    border-radius: 999px;
    background: var(--brand-accent);
    box-shadow: 0 4px 0 var(--brand-ink);
    color: var(--brand-ink);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.hk-task__hook {
    max-width: 540px;
    color: var(--brand-ink-soft);
    font-size: 20px;
    font-weight: 500;
    line-height: 1.5;
}

.hk-task__chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;

    li {
        padding: 7px 11px;
        border: 1px solid var(--brand-border-soft);
        border-radius: 999px;
        background: var(--brand-paper);
        color: var(--brand-ink);
        font: 700 12px/1.2 var(--font-mono);
        letter-spacing: 0.04em;

        &:first-child {
            border: 2px solid var(--brand-ink);
            background: var(--brand-surface-note);
        }
    }
}

.hk-task__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 4px;
}

.hk-task__help {
    color: var(--brand-ink-soft);
    font-size: 15px;
    line-height: 1.5;

    b {
        color: var(--brand-ink);
    }
}

// ---------------------------------------------------------------------------
// Parts and cards (left column)
// ---------------------------------------------------------------------------

.hk-task__part {
    display: grid;
    grid-template-columns: 48px minmax(0, 1fr);
    align-items: center;
    gap: 4px 16px;
    margin: 72px 0 22px;

    h2 {
        font: 800 32px/1 var(--font-mono);
        letter-spacing: -0.055em;
        text-transform: uppercase;
    }

    p {
        color: var(--brand-ink-soft);
        font-size: 15px;
        line-height: 1.45;
    }
}

.hk-task__part-n {
    display: grid;
    width: 48px;
    height: 48px;
    grid-row: span 2;
    place-items: center;
    border: 2px solid var(--brand-ink);
    border-radius: 13px;
    background: var(--brand-ink);
    color: var(--brand-paper);
    font: 800 16px/1 var(--font-mono);
}

.hk-task__card {
    position: relative;
    padding: 24px 26px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 20px;
    background: var(--brand-paper);
    scroll-margin-top: calc(var(--hk-stick) + 20px);
    transition:
        border-color 0.18s,
        box-shadow 0.18s;

    & + & {
        margin-top: 16px;
    }

    &.is-active {
        padding: 23px 25px;
        border: 2px solid var(--brand-ink);
        box-shadow: 8px 8px 0 var(--brand-primary-soft);
    }

    h3 {
        margin: 6px 0 12px;
        font: 800 23px/1.2 var(--font-family-base);
        letter-spacing: -0.015em;
    }

    p,
    li {
        color: var(--brand-ink-soft);
    }

    strong {
        color: var(--brand-ink);
    }

    :is(p, ul, ol, table, .hk-task__inline) + :is(p, ul, ol, table) {
        margin-top: 14px;
    }
}

.hk-task__lead {
    color: var(--brand-ink);
    font-size: 19px;
    font-weight: 800;
    line-height: 1.4;
}

.hk-task__card .hk-task__lead {
    color: var(--brand-ink);
}

.hk-task__modes {
    display: grid;
    gap: 8px;

    li {
        display: grid;
        grid-template-columns: 92px minmax(0, 1fr);
        align-items: baseline;
        gap: 12px;
    }

    b {
        justify-self: start;
        padding: 4px 8px;
        border: 1px solid var(--brand-ink);
        border-radius: 8px;
        background: var(--brand-paper);
        color: var(--brand-ink);
        font: 800 12px/1.2 var(--font-mono);
        letter-spacing: 0.06em;
        text-transform: uppercase;
    }
}

.hk-task__bullets {
    display: grid;
    gap: 6px;

    li {
        position: relative;
        padding-left: 22px;

        &::before {
            position: absolute;
            top: 0.68em;
            left: 4px;
            width: 8px;
            height: 8px;
            border-radius: 2px;
            background: var(--brand-primary-deep);
            content: '';
        }
    }
}

.hk-task__points {
    display: grid;
    gap: 14px;
    counter-reset: hk-point;

    li {
        display: grid;
        grid-template-columns: 28px minmax(0, 1fr);
        gap: 12px;

        &::before {
            display: grid;
            width: 28px;
            height: 28px;
            place-items: center;
            border: 2px solid var(--brand-ink);
            border-radius: 9px;
            background: var(--brand-surface-note);
            color: var(--brand-ink);
            content: counter(hk-point);
            counter-increment: hk-point;
            font: 800 12px/1 var(--font-mono);
        }
    }
}

.hk-task__panelnote {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--brand-primary-deep);
    font: 700 12px/1.4 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;

    svg {
        width: 14px;
        height: 14px;
    }
}

.hk-task__card .hk-task__panelnote {
    margin-top: 16px;
    color: var(--brand-primary-deep);
}

// Checklists (Before you start, Definition of Done).
.hk-task__checklist {
    display: grid;
    grid-template-columns: minmax(0, 1fr);

    li {
        min-width: 0;
        padding-bottom: 2px;
        border-top: 1px solid var(--brand-border-soft);

        &:first-child {
            border-top: 0;

            label {
                padding-top: 4px;
            }
        }

        .hk-task__term {
            margin: -4px 0 14px 40px;
        }
    }

    label {
        display: grid;
        min-height: 44px;
        grid-template-columns: 26px minmax(0, 1fr);
        align-items: start;
        gap: 14px;
        padding: 14px 0;
        color: var(--brand-ink-soft);
        cursor: pointer;
    }

    input {
        display: grid;
        width: 26px;
        height: 26px;
        margin: 1px 0 0;
        place-items: center;
        border: 2px solid var(--brand-ink);
        border-radius: 8px;
        background: var(--brand-paper);
        cursor: pointer;
        appearance: none;

        &:checked {
            background: var(--brand-accent);
            box-shadow: 0 2px 0 var(--brand-ink);

            &::after {
                width: 7px;
                height: 12px;
                margin-top: -3px;
                border: solid var(--brand-ink);
                border-width: 0 3px 3px 0;
                content: '';
                transform: rotate(45deg);
            }

            + span {
                color: var(--brand-ink);
            }
        }
    }
}

// Terminal pill under a checklist item.
.hk-task__term {
    display: flex;
    align-items: stretch;
    overflow: hidden;
    border: 2px solid var(--brand-ink);
    border-radius: 12px;
    background: var(--brand-footer);

    .hk-task__copy {
        border-width: 0 0 0 2px;
        border-radius: 0;
    }
}

.hk-task .hk-task__term code {
    min-width: 0;
    flex: 1;
    padding: 10px 14px;
    overflow-x: auto;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--brand-cream-light);
    font: 500 13px/1.5 var(--font-mono);
    font-variant-ligatures: none;
    white-space: pre;

    &::before {
        color: var(--brand-terminal);
        content: '$ ';
    }
}

// ---------------------------------------------------------------------------
// Code blocks (panel and phone inline copies)
// ---------------------------------------------------------------------------

.hk-task__code {
    position: relative;
    background: var(--brand-footer);
    color: var(--brand-cream-light);
}

.hk-task__codehead {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px 6px 18px;
}

.hk-task__codehead-label {
    flex: 0 1 auto;
    min-width: 0;
    overflow: hidden;
    color: var(--brand-terminal);
    font: 800 12px/1.2 var(--font-mono);
    letter-spacing: 0.08em;
    text-overflow: ellipsis;
    text-transform: uppercase;
    white-space: nowrap;
}

.hk-task__codehead-file {
    min-width: 0;
    overflow: hidden;
    color: var(--brand-cream-light);
    font: 500 12px/1.2 var(--font-mono);
    opacity: 0.72;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.hk-task__copy {
    display: inline-flex;
    flex: none;
    min-height: 32px;
    align-items: center;
    gap: 7px;
    margin-left: auto;
    padding: 0 11px;
    border: 1.5px solid var(--brand-terminal);
    border-radius: 9px;
    background: transparent;
    color: var(--brand-cream-light);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;

    svg {
        width: 14px;
        height: 14px;
    }

    &:hover,
    &.is-done {
        background: var(--brand-terminal);
        color: var(--brand-footer);
    }
}

.hk-task .hk-task__pre {
    display: block;
    margin: 0;
    padding: 2px 0 16px;
    overflow-x: auto;
    border: 0;
    border-radius: 0;
    background: transparent;
    color: var(--brand-cream-light);
    font: 400 13px/1.65 var(--font-mono);
    font-variant-ligatures: none;
    white-space: pre;
    tab-size: 2;

    code {
        display: block;
        min-width: max-content;
        padding: 0;
        border: 0;
        background: none;
        color: inherit;
        font: inherit;
        font-variant-ligatures: none;
        white-space: inherit;
    }

    &--wrap {
        white-space: pre-wrap;

        code {
            min-width: 0;
        }
    }

    &:focus-visible {
        outline-offset: -3px;
    }
}

.hk-task__ln {
    position: relative;
    display: block;
    min-height: 1.65em;
    padding: 0 14px 0 48px;
    transition:
        opacity 0.2s,
        background-color 0.2s;

    &::before {
        position: absolute;
        left: 0;
        width: 32px;
        color: var(--brand-cream-light);
        content: attr(data-n);
        opacity: 0.42;
        text-align: right;
    }

    &.is-hl {
        background: rgb(var(--brand-primary-glow-rgb) / 16%);

        &::before {
            color: var(--brand-terminal);
            opacity: 1;
        }
    }

    &.is-pin {
        background: rgb(var(--brand-primary-glow-rgb) / 30%);
    }
}

.hk-task__pre.is-dim .hk-task__ln:not(.is-hl) {
    opacity: 0.5;
}

.hk-tok {
    &--k {
        color: var(--brand-terminal);
        font-weight: 700;
    }

    &--f {
        color: var(--brand-primary-muted);
    }

    &--s {
        color: var(--brand-accent);
    }

    &--n {
        color: var(--brand-accent-bright);
    }

    &--o {
        color: var(--brand-terminal);
    }

    &--c {
        opacity: 0.66;
    }
}

// ---------------------------------------------------------------------------
// Sticky code panel (right column)
// ---------------------------------------------------------------------------

.hk-task__panel {
    position: sticky;
    top: calc(var(--hk-stick) + 20px);
    display: flex;
    height: calc(100vh - var(--hk-stick) - 44px);
    min-height: 540px;
    max-height: 880px;
    flex-direction: column;
    overflow: hidden;
    border: 3px solid var(--brand-ink);
    border-radius: 24px;
    background: var(--brand-paper);
    box-shadow: 10px 10px 0 var(--brand-primary-soft);
}

.hk-task__panel-tabs {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    padding: 10px 12px;
    border-top: 2px solid var(--brand-ink);
    border-bottom: 2px solid var(--brand-ink);
    background: var(--brand-cream-light);
}

.hk-task a.hk-task__tab {
    display: inline-flex;
    min-height: 32px;
    align-items: center;
    padding: 0 10px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 999px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.06em;
    text-decoration: none;
    text-transform: uppercase;

    &:hover {
        border-color: var(--brand-ink);
        color: var(--brand-ink);
        text-decoration: none;
    }

    &.is-active {
        padding: 0 9px;
        border: 2px solid var(--brand-ink);
        background: var(--brand-accent);
        box-shadow: 0 3px 0 var(--brand-ink);
    }
}

.hk-task__panel-sep {
    width: 1px;
    height: 20px;
    margin: 0 2px;
    background: var(--brand-border-soft);
}

.hk-task__panel-body {
    position: relative;
    min-height: 0;
    flex: 1;
    overflow: auto;
    background: var(--brand-footer);
}

.hk-task__view {
    display: none;

    &.is-active {
        display: block;
    }

    .hk-task__code + .hk-task__code {
        border-top: 1px solid rgb(var(--brand-primary-glow-rgb) / 22%);
    }
}

// Connection card (START view, and inline on phones).
.hk-task__conn {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin: 6px 18px 0;
    border: 1.5px solid rgb(var(--brand-primary-glow-rgb) / 40%);
    border-radius: 12px;

    div {
        padding: 10px 12px;

        + div {
            border-left: 1.5px solid rgb(var(--brand-primary-glow-rgb) / 40%);
        }
    }

    dt {
        color: var(--brand-terminal);
        font: 800 12px/1.3 var(--font-mono);
        letter-spacing: 0.08em;
        text-transform: uppercase;
    }

    dd {
        margin-top: 3px;
        color: var(--brand-cream-light);
        font: 600 14px/1.35 var(--font-mono);

        small {
            display: block;
            font-size: 12px;
            opacity: 0.75;
        }
    }
}

.hk-task__kitline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    margin: 14px 18px 18px;
    color: var(--brand-cream-light);
    font: 500 13px/1.5 var(--font-mono);

    b {
        color: var(--brand-terminal);
        font-weight: 800;
        letter-spacing: 0.06em;
        text-transform: uppercase;
    }

    code {
        padding: 0;
        border: 0;
        background: none;
        color: var(--brand-accent);
    }

    a {
        color: var(--brand-accent);
        text-underline-offset: 3px;
    }
}

.hk-task .hk-task__kitline {
    margin: 14px 18px 18px;
}

// Route map (START view): the milestone path at a glance.
.hk-task__route {
    margin: 4px 18px 18px;
    padding-top: 16px;
    border-top: 1px dashed rgb(var(--brand-primary-glow-rgb) / 32%);
}

.hk-task .hk-task__route-label {
    margin-bottom: 12px;
    color: var(--brand-cream-light);
    font: 600 12px/1.3 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;

    b {
        margin-right: 8px;
        color: var(--brand-terminal);
        font-weight: 800;
    }
}

.hk-task__route-list {
    position: relative;
    display: grid;
    gap: 8px;

    &::before {
        position: absolute;
        top: 16px;
        right: 40px;
        left: 16px;
        height: 2px;
        background: rgb(var(--brand-primary-glow-rgb) / 38%);
        content: '';
    }
}

.hk-task a.hk-task__route-step {
    position: relative;
    display: grid;
    align-content: start;
    gap: 6px;
    color: var(--brand-cream-light);
    text-decoration: none;

    &:hover {
        color: var(--brand-cream-light);
        text-decoration: none;

        b {
            background: var(--brand-terminal);
            color: var(--brand-footer);
        }
    }

    b {
        display: grid;
        width: 34px;
        height: 34px;
        place-items: center;
        border: 1.5px solid var(--brand-terminal);
        border-radius: 10px;
        background: var(--brand-footer);
        color: var(--brand-terminal);
        font: 800 12px/1 var(--font-mono);
        transition:
            background-color 0.15s,
            color 0.15s;
    }

    span {
        font-size: 13px;
        font-weight: 600;
        line-height: 1.3;
    }

    i {
        color: var(--brand-terminal);
        font: 600 12px/1.2 var(--font-mono);
        font-style: normal;
    }
}

// ---------------------------------------------------------------------------
// Sketch: a labelled wireframe of what participants build (not a screenshot)
// ---------------------------------------------------------------------------

.hk-sketch {
    padding: 12px 16px 14px;
    background: var(--brand-paper);
    transition: box-shadow 0.2s;
}

.hk-task__panel.is-sketch-focus .hk-sketch {
    box-shadow: inset 0 0 0 4px var(--brand-accent);
}

.hk-sketch__head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
}

.hk-task__panel.is-sketch-min .hk-sketch__head {
    margin-bottom: 0;
}

.hk-sketch__tag {
    padding: 4px 9px;
    border: 2px dashed var(--brand-ink);
    border-radius: 999px;
    color: var(--brand-ink);
    font: 800 12px/1.2 var(--font-mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hk-sketch__title {
    min-width: 0;
    color: var(--brand-ink-soft);
    font: 700 12px/1.3 var(--font-mono);
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.hk-task .hk-sketch__toggle {
    display: inline-flex;
    min-height: 30px;
    align-items: center;
    gap: 6px;
    margin-left: auto;
    padding: 0 10px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 8px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.05em;
    text-transform: uppercase;

    svg {
        width: 12px;
        height: 12px;
        transition: transform 0.2s;
    }

    &[aria-expanded='false'] svg {
        transform: rotate(180deg);
    }
}

.hk-sketch__ui {
    display: grid;
    gap: 9px;
    padding: 12px;
    border: 2px solid var(--brand-ink);
    border-radius: 14px;
    background: var(--brand-cream-light);
    color: var(--brand-ink);
    font-size: 13px;
    line-height: 1.3;
}

// One highlighted region per milestone: "this is the part you build now".
.hk-sketch__zone {
    min-width: 0;
    border-radius: 10px;
    transition: box-shadow 0.2s;

    &.is-focus {
        box-shadow: 0 0 0 3px var(--brand-accent);
    }
}

.hk-sketch__search {
    display: flex;
    gap: 8px;
}

.hk-sketch__input {
    display: flex;
    min-width: 0;
    height: 36px;
    flex: 1;
    align-items: center;
    gap: 8px;
    padding: 0 12px;
    border: 2px solid var(--brand-ink);
    border-radius: 10px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 600 13px/1 var(--font-mono);

    svg {
        width: 14px;
        height: 14px;
        color: var(--brand-ink-soft);
    }

    span {
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }
}

.hk-sketch__go {
    display: grid;
    width: 44px;
    height: 36px;
    place-items: center;
    border: 2px solid var(--brand-ink);
    border-radius: 10px;
    background: var(--brand-shell);

    i {
        width: 18px;
        height: 6px;
        border-radius: 3px;
        background: var(--brand-ink);
        opacity: 0.35;
    }
}

.hk-sketch__controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
}

.hk-sketch__seg {
    display: flex;
    overflow: hidden;
    border: 2px solid var(--brand-ink);
    border-radius: 9px;

    span {
        padding: 6px 9px;
        color: var(--brand-ink);
        font: 800 12px/1 var(--font-mono);
        letter-spacing: 0.05em;
        text-transform: uppercase;

        + span {
            border-left: 2px solid var(--brand-ink);
        }

        &.is-on {
            background: var(--brand-accent);
        }
    }
}

.hk-sketch__chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 9px;
    border: 2px solid var(--brand-ink);
    border-radius: 9px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 600 12px/1.2 var(--font-mono);

    b {
        color: var(--brand-ink-soft);
        font-weight: 800;
        letter-spacing: 0.05em;
        text-transform: uppercase;
    }

    svg {
        width: 12px;
        height: 12px;
    }
}

.hk-sketch__switch {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-left: auto;
    color: var(--brand-ink);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.05em;
    text-transform: uppercase;

    i {
        position: relative;
        width: 32px;
        height: 18px;
        border: 2px solid var(--brand-ink);
        border-radius: 999px;
        background: var(--brand-paper);

        &::after {
            position: absolute;
            top: 2px;
            left: 2px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--brand-ink);
            content: '';
            transition: transform 0.2s;
        }
    }

    &.is-on i {
        background: var(--brand-accent);

        &::after {
            transform: translateX(14px);
        }
    }
}

.hk-sketch__rows {
    display: grid;
    gap: 6px;
}

.hk-sketch__row {
    display: grid;
    grid-template-columns: var(--hk-sketch-cols, 1.1fr 1.8fr 0.7fr 18px);
    align-items: center;
    gap: 10px;

    &--head span {
        color: var(--brand-ink-soft);
        font: 800 12px/1.2 var(--font-mono);
        letter-spacing: 0.06em;
        text-transform: uppercase;
    }

    i {
        height: 9px;
        border-radius: 5px;
        background: var(--brand-shell);

        &:nth-child(2) {
            width: 86%;
        }

        &.hk-sketch__link {
            width: 14px;
            height: 14px;
            border: 2px solid var(--brand-ink-soft);
            border-radius: 4px;
            background: transparent;
            opacity: 0.55;
        }
    }

    + .hk-sketch__row i:nth-child(1) {
        width: 72%;
    }
}

.hk-sketch__sqlbar {
    display: flex;
    align-items: center;
    gap: 8px;
    padding-top: 8px;
    border-top: 1px dashed var(--brand-border-soft);
    color: var(--brand-ink-soft);
    font: 700 12px/1.2 var(--font-mono);
    letter-spacing: 0.04em;

    svg {
        width: 13px;
        height: 13px;
    }
}

.hk-sketch__caption {
    color: var(--brand-ink-soft);
    font: 800 12px/1.2 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

// Bars without values: shapes only, never numbers that look like data.
.hk-sketch__bars {
    display: flex;
    height: 44px;
    align-items: flex-end;
    gap: 4px;

    i {
        flex: 1;
        border-radius: 3px 3px 0 0;
        background: var(--brand-shell);
    }
}

.hk-sketch__split {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 2fr);
    gap: 10px;
}

.hk-sketch__box {
    display: grid;
    align-content: start;
    gap: 7px;
    padding: 9px 10px;
    border: 2px solid var(--brand-ink);
    border-radius: 10px;
    background: var(--brand-paper);
}

.hk-sketch__facet {
    display: grid;
    grid-template-columns: 1fr;
    gap: 5px;

    i {
        height: 8px;
        border-radius: 4px;
        background: var(--brand-shell);
    }

    i:nth-child(odd) {
        width: 80%;
    }
}

.hk-sketch__events {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;

    span {
        padding: 4px 8px;
        border: 1.5px solid var(--brand-ink);
        border-radius: 999px;
        background: var(--brand-paper);
        color: var(--brand-ink);
        font: 700 12px/1.2 var(--font-mono);

        &.is-on {
            background: var(--brand-accent);
        }
    }
}

.hk-sketch__flow {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1.2fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 6px;

    > span {
        display: grid;
        min-height: 46px;
        align-content: center;
        padding: 6px 8px;
        border: 2px solid var(--brand-ink);
        border-radius: 10px;
        background: var(--brand-paper);
        color: var(--brand-ink);
        font: 800 12px/1.25 var(--font-mono);
        text-align: center;

        small {
            color: var(--brand-ink-soft);
            font: 600 12px/1.2 var(--font-mono);
        }
    }

    > i {
        color: var(--brand-ink-soft);
        font: 800 13px/1 var(--font-mono);
        font-style: normal;
    }
}

.hk-sketch__chat {
    display: grid;
    gap: 7px;
}

.hk-sketch__bubble {
    display: grid;
    max-width: 88%;
    gap: 5px;
    padding: 8px 10px;
    border: 2px solid var(--brand-ink);
    border-radius: 12px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 600 12px/1.35 var(--font-mono);

    &--you {
        justify-self: end;
        background: var(--brand-surface-note);
    }

    &--sql {
        background: var(--brand-footer);
        color: var(--brand-terminal);

        i {
            height: 7px;
            border-radius: 4px;
            background: var(--brand-terminal);
            opacity: 0.45;
        }
    }

    &--refused {
        border-style: dashed;
    }

    i {
        height: 8px;
        border-radius: 4px;
        background: var(--brand-shell);
    }

    i:nth-child(odd) {
        width: 76%;
    }
}

// ---------------------------------------------------------------------------
// Milestones
// ---------------------------------------------------------------------------

.hk-task__path {
    position: relative;
    display: grid;
    gap: 16px;

    &::before {
        position: absolute;
        top: 46px;
        bottom: 46px;
        left: 47px;
        width: 4px;
        background: var(--brand-border-soft);
        content: '';
    }

    .hk-task__card + .hk-task__card {
        margin-top: 0;
    }
}

.hk-task__ms {
    display: grid;
    grid-template-columns: 50px minmax(0, 1fr);
    gap: 4px 18px;

    h3 {
        margin: 4px 0 10px;
    }

    &.is-active .hk-task__ms-num {
        border-color: var(--brand-ink);
        background: var(--brand-accent);
        box-shadow: 0 3px 0 var(--brand-ink);
        color: var(--brand-ink);
    }
}

.hk-task__ms-num {
    position: relative;
    z-index: 1;
    display: grid;
    width: 50px;
    height: 50px;
    place-items: center;
    border: 2px solid var(--brand-border-soft);
    border-radius: 14px;
    background: var(--brand-paper);
    color: var(--brand-primary-deep);
    font: 800 15px/1 var(--font-mono);
}

.hk-task__ms-body {
    min-width: 0;
}

.hk-task__ms-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;

    span:last-child:not(:first-child) {
        padding: 3px 8px;
        border: 1px solid var(--brand-border-soft);
        border-radius: 999px;
        background: var(--brand-surface-soft);
        color: var(--brand-ink);
        font: 700 12px/1.2 var(--font-mono);
    }
}

.hk-task__check {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: baseline;
    gap: 10px;
    margin-top: 14px;
    padding: 12px 14px;
    border: 1.5px dashed var(--brand-primary);
    border-radius: 12px;
    background: var(--brand-surface-callout);

    b {
        color: var(--brand-ink);
        font: 800 12px/1.5 var(--font-mono);
        letter-spacing: 0.08em;
        text-transform: uppercase;
        white-space: nowrap;
    }
}

.hk-task__card .hk-task__check p {
    color: var(--brand-ink);
    font-size: 16px;
    line-height: 1.5;
}

// Line legend: prose ↔ code line mapping.
.hk-task__legend {
    display: grid;
    gap: 8px;
    margin-top: 16px;

    li {
        display: grid;
        width: 100%;
        grid-template-columns: 46px minmax(0, 1fr);
        align-items: center;
        gap: 12px;
        padding: 9px 12px;
        border: 1px solid var(--brand-border-soft);
        border-radius: 12px;
        background: var(--brand-paper);
        color: var(--brand-ink);

        &:hover,
        &:focus-visible {
            border-color: var(--brand-ink);
            background: var(--brand-surface-note);
        }
    }

    b {
        padding: 4px 0;
        border-radius: 7px;
        background: var(--brand-footer);
        color: var(--brand-terminal);
        font: 800 12px/1 var(--font-mono);
        text-align: center;
    }

    em {
        display: block;
        color: var(--brand-ink-soft);
        font: 500 13px/1.4 var(--font-mono);
        font-style: normal;
    }
}

.hk-task .hk-task__legend code {
    font: 600 13px/1.4 var(--font-mono);
}

// ---------------------------------------------------------------------------
// Tables
// ---------------------------------------------------------------------------

.hk-task .hk-task__table {
    display: table;
    width: 100%;
    overflow: hidden;
    border: 2px solid var(--brand-ink);
    border-collapse: separate;
    border-radius: 14px;
    border-spacing: 0;
    background: var(--brand-paper);
    font-family: var(--font-family-base);

    tr {
        border: 0;
        background: transparent;
    }

    th {
        padding: 10px 14px;
        border: 0;
        background: var(--brand-ink);
        color: var(--brand-paper);
        font: 800 12px/1.3 var(--font-mono);
        letter-spacing: 0.08em;
        text-align: left;
        text-transform: uppercase;
    }

    td {
        padding: 12px 14px;
        border: 0;
        border-top: 1px solid var(--brand-border-soft);
        color: var(--brand-ink-soft);
        font-size: 16px;
        font-weight: 400;
        line-height: 1.5;
        vertical-align: top;

        &:first-child {
            width: 42%;
            color: var(--brand-ink);
            font-weight: 600;
        }
    }

    tbody tr:first-child td {
        border-top: 0;
    }
}

.hk-task .hk-task__card .hk-task__table {
    margin-top: 16px;
}

// Three columns: a narrow level number, the question, what it tests.
.hk-task .hk-task__table--levels td {
    &:first-child {
        width: 64px;
        font: 800 14px/1.5 var(--font-mono);
    }

    &:nth-child(2) {
        width: 56%;
        color: var(--brand-ink);
    }
}

// ---------------------------------------------------------------------------
// Ship it: done, badge, stretch, references
// ---------------------------------------------------------------------------

.hk-task__dod {
    padding-top: 26px;
}

.hk-task__dod-top {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.hk-task__dod-count {
    padding: 4px 10px;
    border: 2px solid var(--brand-ink);
    border-radius: 999px;
    background: var(--brand-surface-note);
    color: var(--brand-ink);
    font: 800 12px/1.3 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.hk-task__submit {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 150px;
    gap: 6px 22px;
}

.hk-task__submit-badge {
    display: grid;
    align-content: start;
    justify-items: center;
    gap: 8px;
    grid-column: 2;
    grid-row: 1 / span 4;
    text-align: center;

    img {
        width: 150px;
        height: 150px;
    }

    a {
        font: 700 12px/1.35 var(--font-mono);
        letter-spacing: 0.04em;
    }
}

.hk-task__steps {
    display: grid;
    gap: 12px;
    margin-top: 6px;
    counter-reset: hk-step;

    li {
        display: grid;
        grid-template-columns: 30px minmax(0, 1fr);
        gap: 12px;

        &::before {
            display: grid;
            width: 30px;
            height: 30px;
            place-items: center;
            border-radius: 9px;
            background: var(--brand-ink);
            color: var(--brand-paper);
            content: counter(hk-step);
            counter-increment: hk-step;
            font: 800 13px/1 var(--font-mono);
        }
    }
}

.hk-task .hk-task__card .hk-task__late {
    margin-top: 16px;
    padding: 12px 14px;
    border-radius: 12px;
    background: var(--brand-surface-soft);
}

.hk-task__next {
    display: grid;
    gap: 10px;

    li {
        padding: 14px 16px;
        border: 1px solid var(--brand-border-soft);
        border-radius: 14px;
        background: var(--brand-surface-faint);
    }
}

.hk-task__refs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.hk-task .hk-task__refs {
    margin-top: 12px;
}

.hk-task .hk-task__refs a {
    display: inline-flex;
    min-height: 38px;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
    border: 1px solid var(--brand-ink);
    border-radius: 999px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 700 13px/1 var(--font-mono);
    text-decoration: none;

    &:hover {
        background: var(--brand-surface-note);
        color: var(--brand-ink);
        text-decoration: none;
    }

    small {
        color: var(--brand-ink-soft);
        font-weight: 500;
    }

    svg {
        width: 12px;
        height: 12px;
    }
}

.hk-task .hk-task__subhead {
    margin-top: 22px;
}

// Phone-only copies (code, sketch, connection card) stay hidden while the
// panel is on screen.
.hk-task__inline {
    display: none;
}

// ---------------------------------------------------------------------------
// All four tasks
// ---------------------------------------------------------------------------

.hk-task__more {
    margin-top: 88px;
    padding-top: 40px;
    border-top: 2px solid var(--brand-ink);

    h2 {
        font: 800 30px/1 var(--font-mono);
        letter-spacing: -0.05em;
        text-transform: uppercase;
    }
}

.hk-task__more-head {
    display: flex;
    flex-wrap: wrap;
    align-items: end;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 20px;
}

.hk-task__tiles {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 16px;

    > li {
        min-width: 0;
    }
}

.hk-task a.hk-task__tile {
    display: flex;
    height: 100%;
    flex-direction: column;
    overflow: hidden;
    border: 2px solid var(--brand-ink);
    border-radius: 20px;
    background: var(--brand-paper);
    box-shadow: 6px 6px 0 var(--brand-primary-soft);
    color: var(--brand-ink);
    text-decoration: none;
    transition:
        transform 0.15s,
        box-shadow 0.15s;

    &:hover {
        box-shadow: 6px 10px 0 var(--brand-primary-soft);
        color: var(--brand-ink);
        text-decoration: none;
        transform: translateY(-3px);

        .hk-task__tile-go svg {
            transform: translateX(3px);
        }
    }

    &:hover .hk-task__tile-code,
    &[aria-current='page'] .hk-task__tile-code {
        background: var(--brand-accent);
        box-shadow: 0 3px 0 var(--brand-ink);
    }

    &[aria-current='page'] {
        box-shadow: 6px 6px 0 var(--brand-accent);
    }
}

.hk-task__tile-body {
    display: grid;
    flex: 1;
    align-content: start;
    gap: 10px;
    padding: 18px 18px 16px;
}

.hk-task__tile-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
}

.hk-task__tile-code {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 2px solid var(--brand-ink);
    border-radius: 13px;
    background: var(--brand-paper);
    color: var(--brand-ink);
    font: 800 14px/1 var(--font-mono);
    transition:
        background-color 0.15s,
        box-shadow 0.15s;
}

.hk-task__tile-time {
    padding: 5px 9px;
    border: 1px solid var(--brand-border-soft);
    border-radius: 999px;
    background: var(--brand-surface-soft);
    color: var(--brand-ink);
    font: 700 12px/1.2 var(--font-mono);
    letter-spacing: 0.03em;
    white-space: nowrap;
}

.hk-task__tile-name {
    color: var(--brand-ink);
    font-size: 19px;
    font-weight: 800;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.hk-task__tile-go {
    display: flex;
    min-height: 46px;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 0 18px;
    border-top: 2px solid var(--brand-ink);
    background: var(--brand-footer);
    color: var(--brand-terminal);
    font: 800 12px/1 var(--font-mono);
    letter-spacing: 0.08em;
    text-transform: uppercase;

    svg {
        width: 16px;
        height: 16px;
        transition: transform 0.15s;
    }
}

// ---------------------------------------------------------------------------
// Responsive
// ---------------------------------------------------------------------------

@media (max-width: 1400px) {
    // 1280–1400 laptops: give the panel the width an 80-column SQL line needs.
    .hk-task {
        --hk-wrap: calc(100vw - 64px);
    }

    .hk-task__grid {
        grid-template-columns: minmax(0, 480px) minmax(0, 1fr);
        gap: 32px;
    }
}

@media (max-width: 1180px) {
    .hk-task {
        --hk-wrap: calc(100vw - 48px);
    }

    .hk-task__switch-name {
        font-size: 13px;
    }

    .hk-task__grid {
        grid-template-columns: minmax(0, 440px) minmax(0, 1fr);
        gap: 28px;
    }
}

// Single column: the panel goes away and every step carries its own code.
@media (max-width: 1079px) {
    .hk-task {
        --hk-wrap: min(720px, calc(100% - 48px));
    }

    .hk-task__grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .hk-task__panel,
    .hk-task__panelnote {
        display: none;
    }

    .hk-task__inline {
        display: block;
    }

    .hk-task__card.is-active {
        padding: 24px 26px;
        border: 1px solid var(--brand-border-soft);
        box-shadow: none;
    }

    .hk-task__ms.is-active .hk-task__ms-num {
        border-color: var(--brand-border-soft);
        background: var(--brand-paper);
        box-shadow: none;
        color: var(--brand-primary-deep);
    }

    .hk-task__inline .hk-task__code {
        margin-top: 14px;
        overflow: hidden;
        border: 2px solid var(--brand-ink);
        border-radius: 14px;
    }

    .hk-task__inline + .hk-task__inline .hk-task__code {
        margin-top: 10px;
    }

    .hk-task__inline .hk-task__ln {
        padding-left: 16px;

        &::before {
            display: none;
        }
    }

    .hk-task__inline .hk-task__pre--bash .hk-task__ln::before {
        position: static;
        display: inline;
        color: var(--brand-terminal);
        content: '$ ';
        opacity: 1;
    }

    .hk-task__inline-sketch {
        margin-top: 16px;

        .hk-sketch {
            padding: 0;
            background: transparent;
        }
    }

    .hk-task__conn--inline {
        margin: 14px 0 0;
        border: 2px solid var(--brand-ink);
        background: var(--brand-footer);
    }
}

@media (max-width: 1020px) {
    .hk-task__tiles {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 768px) {
    .hk-task {
        --hk-nav: 56px;
    }
}

@media (max-width: 760px) {
    .hk-task__switch {
        display: none;
    }

    .hk-task__bar {
        position: static;
    }

    .hk-task__bar-in {
        flex-wrap: wrap;
        gap: 10px;
        padding: 10px 0 12px;
    }

    .hk-task .hk-task__event {
        flex: 1 1 100%;
        align-items: flex-start;
        gap: 6px;

        > span {
            white-space: normal;
        }
    }
}

@media (max-width: 640px) {
    .hk-task {
        --hk-wrap: calc(100% - 40px);

        padding-bottom: 64px;
        font-size: 16px;
    }

    .hk-task__hero {
        gap: 16px;

        h1 {
            font-size: clamp(40px, 12.4vw, 52px);
        }
    }

    .hk-task__hook {
        font-size: 18px;
    }

    .hk-task__actions .hk-task__btn {
        width: 100%;
    }

    // Phone tap targets: 44px minimum.
    .hk-task__btn--sm,
    .hk-task a.hk-task__back,
    .hk-task .hk-task__refs a,
    .hk-task__copy {
        min-height: 44px;
    }

    .hk-task__part {
        grid-template-columns: 42px minmax(0, 1fr);
        margin: 56px 0 18px;

        h2 {
            font-size: 26px;
        }
    }

    .hk-task__part-n {
        width: 42px;
        height: 42px;
    }

    .hk-task__card,
    .hk-task__card.is-active {
        padding: 20px 18px;
        border-radius: 18px;
    }

    .hk-task__card h3 {
        font-size: 20px;
    }

    .hk-task__lead {
        font-size: 18px;
    }

    .hk-task__modes li {
        grid-template-columns: minmax(0, 1fr);
        gap: 4px;
    }

    .hk-task__path::before {
        left: 37px;
    }

    .hk-task__ms {
        grid-template-columns: 44px minmax(0, 1fr);
        gap: 0 14px;

        h3 {
            grid-column: 2;
            align-self: start;
            margin: 2px 0 0;
        }
    }

    .hk-task__ms-num {
        width: 44px;
        height: 44px;
        grid-row: 1 / span 2;
    }

    .hk-task__ms-body {
        display: contents;

        > :not(.hk-task__ms-meta, h3) {
            grid-column: 1 / -1;
        }
    }

    .hk-task__ms-meta {
        grid-column: 2;
        align-self: end;
    }

    .hk-task__term .hk-task__copy {
        min-width: 52px;
        justify-content: center;

        .hk-task__copy-label {
            position: absolute;
            width: 1px;
            height: 1px;
            overflow: hidden;
            clip: rect(0 0 0 0);
            white-space: nowrap;
        }
    }

    .hk-task__check {
        grid-template-columns: minmax(0, 1fr);
        gap: 4px;
    }

    .hk-task__card .hk-task__check p {
        font-size: 15px;
    }

    .hk-task__conn {
        grid-template-columns: repeat(2, minmax(0, 1fr));

        div:nth-child(3) {
            border-left: 0;
        }

        div:nth-child(n + 3) {
            border-top: 1.5px solid rgb(var(--brand-primary-glow-rgb) / 40%);
        }
    }

    .hk-sketch__row {
        --hk-sketch-cols: 1fr 1.6fr 0.7fr 16px;

        gap: 8px;
    }

    .hk-sketch__switch {
        margin-left: 0;
    }

    .hk-sketch__split {
        grid-template-columns: minmax(0, 1fr);
    }

    // Tables become stacked cards: no sideways scrolling on a phone.
    .hk-task .hk-task__table {
        &,
        tbody,
        tr,
        td {
            display: block;
            width: 100%;
        }

        thead {
            display: none;
        }

        tr + tr {
            border-top: 2px solid var(--brand-ink);
        }

        td {
            border-top: 0;
            font-size: 15px;

            &:first-child,
            &:nth-child(2) {
                width: 100%;
            }

            + td {
                padding-top: 0;
            }

            &::before {
                display: block;
                margin-bottom: 4px;
                color: var(--brand-primary-deep);
                content: attr(data-label);
                font: 800 12px/1.3 var(--font-mono);
                letter-spacing: 0.08em;
                text-transform: uppercase;
            }
        }
    }

    .hk-task__submit {
        grid-template-columns: minmax(0, 1fr);
    }

    .hk-task__submit-badge {
        grid-column: auto;
        grid-row: auto;
        grid-template-columns: 96px minmax(0, 1fr);
        align-items: center;
        justify-items: start;
        order: -1;
        text-align: left;

        img {
            width: 96px;
            height: 96px;
        }
    }

    .hk-task__tiles {
        grid-template-columns: minmax(0, 1fr);
        gap: 14px;
    }

    .hk-task a.hk-task__tile {
        border-radius: 18px;
        box-shadow: 5px 5px 0 var(--brand-primary-soft);
    }

    .hk-task__tile-body {
        grid-template-columns: 42px minmax(0, 1fr);
        gap: 8px 14px;
        padding: 16px;
    }

    .hk-task__tile-top {
        display: contents;
    }

    .hk-task__tile-code {
        grid-column: 1;
        grid-row: 1 / span 2;
    }

    .hk-task__tile-name {
        grid-column: 2;
        align-self: end;
        font-size: 18px;
    }

    .hk-task__tile-time {
        grid-column: 2;
        align-self: start;
        justify-self: start;
    }

    .hk-task__more h2 {
        font-size: 24px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .hk-task__btn,
    .hk-task__card,
    .hk-task__ln,
    .hk-task a.hk-task__switch-item,
    .hk-task a.hk-task__tile,
    .hk-task__tile-go svg,
    .hk-task__tile-code,
    .hk-sketch__switch i::after,
    .hk-sketch__zone,
    .hk-task .hk-sketch__toggle svg {
        transition: none;
    }
}