.level-protocol {
    width: min(calc(100% - 40px), var(--level-content));
    margin: clamp(58px, 8vw, 104px) auto 0;
    padding: clamp(30px, 5vw, 58px);
    border: 1px solid var(--level-line);
    background: var(--level-white);
    box-shadow: var(--level-shadow-card);
}

.level-protocol-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 28px;
}

.level-protocol-header h2,
.frame-comparison h3 {
    margin: 8px 0 0;
    font-family: var(--level-font-display);
    font-size: clamp(2.4rem, 5vw, 4.8rem);
    font-weight: 400;
    line-height: 0.96;
}

.protocol-count {
    padding-bottom: 8px;
    color: var(--level-ink-soft);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
}

.protocol-loading,
.local-frame-note,
.reference-note,
.comparison-missing {
    color: var(--level-ink-soft);
    font-size: 0.78rem;
    line-height: 1.6;
}

.protocol-goal {
    margin-top: 36px;
    padding: 24px 0;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid var(--level-line);
    border-bottom: 1px solid var(--level-line);
}

.protocol-goal > span,
.protocol-page-aside > p,
.protocol-page-directions > p {
    margin: 0;
    color: var(--level-aqua-deep);
    font-size: 0.68rem;
    font-weight: 800;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.protocol-goal > strong {
    font-family: var(--level-font-display);
    font-size: 1.5rem;
    font-weight: 400;
}

.protocol-goal-options {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.protocol-goal-options button,
.comparison-actions button,
.protocol-controls button {
    min-height: 38px;
    padding: 0 15px;
    border: 1px solid var(--level-line-strong);
    border-radius: 999px;
    color: var(--level-ink);
    background: transparent;
    font-size: 0.7rem;
    cursor: pointer;
    transition: border-color 160ms ease, background 160ms ease;
}

.protocol-goal-options button.selected,
.comparison-actions button.selected {
    border-color: var(--level-aqua-deep);
    background: var(--level-aqua-pale);
}

.protocol-steps,
.protocol-page-steps {
    margin: 30px 0 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1px;
    border: 1px solid var(--level-line);
    background: var(--level-line);
    list-style: none;
}

.protocol-steps li,
.protocol-page-steps li {
    min-width: 0;
    background: var(--level-white);
}

.protocol-steps button,
.protocol-page-steps button {
    width: 100%;
    min-height: 78px;
    padding: 16px 18px;
    display: grid;
    grid-template-columns: 38px 1fr;
    align-items: center;
    gap: 14px;
    border: 0;
    color: var(--level-ink);
    background: var(--level-white);
    text-align: left;
    cursor: pointer;
    transition: background 160ms ease;
}

.protocol-steps button:not(:disabled):hover,
.protocol-page-steps button:not(:disabled):hover {
    background: var(--level-aqua-wash);
}

.protocol-steps button:disabled,
.protocol-page-steps button:disabled {
    cursor: default;
}

.protocol-check,
.protocol-page-steps button > span {
    width: 34px;
    height: 34px;
    display: grid;
    place-items: center;
    border: 1px solid var(--level-line-strong);
    border-radius: 50%;
    color: var(--level-ink-soft);
    font-size: 0.68rem;
    font-weight: 800;
}

.protocol-steps button.complete,
.protocol-page-steps button.complete {
    background: var(--level-aqua-pale);
}

.protocol-steps button.complete .protocol-check,
.protocol-page-steps button.complete > span {
    border-color: var(--level-aqua-deep);
    color: var(--level-ink);
    background: var(--level-aqua);
    font-size: 0;
}

.protocol-steps button.complete .protocol-check::after,
.protocol-page-steps button.complete > span::after {
    content: "\2713";
    font-size: 0.78rem;
}

.protocol-save-row {
    margin-top: 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.protocol-primary,
.protocol-rescan {
    min-height: 50px;
    padding: 0 24px;
    border: 1px solid var(--level-ink);
    border-radius: 0;
    color: var(--level-white);
    background: var(--level-ink);
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    cursor: pointer;
}

.protocol-save-row p {
    max-width: 440px;
    margin: 0;
    color: var(--level-ink-soft);
    font-size: 0.72rem;
    line-height: 1.55;
}

.protocol-controls {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
}

.protocol-controls button:disabled {
    opacity: 0.5;
}

.protocol-directions {
    margin-top: 34px;
}

.protocol-directions > p {
    margin-bottom: 16px;
}

.protocol-directions article {
    padding: 18px 0;
    display: grid;
    grid-template-columns: minmax(170px, 0.34fr) 1fr;
    gap: 28px;
    border-top: 1px solid var(--level-line);
}

.protocol-directions strong {
    font-family: var(--level-font-display);
    font-size: 1.35rem;
    font-weight: 400;
}

.protocol-directions span {
    color: var(--level-ink-soft);
    font-size: 0.82rem;
    line-height: 1.55;
}

.protocol-thirty-day {
    margin-top: 30px;
    border-top: 1px solid var(--level-line);
}

.protocol-thirty-day summary {
    padding: 20px 0;
    color: var(--level-ink);
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
}

.protocol-thirty-day ol {
    color: var(--level-ink-soft);
    line-height: 1.7;
}

.frame-comparison {
    margin-bottom: 42px;
    padding-bottom: 42px;
    border-bottom: 1px solid var(--level-line);
}

.frame-comparison-heading {
    max-width: 760px;
}

.frame-comparison-heading > p:last-child {
    color: var(--level-ink-soft);
    line-height: 1.6;
}

.comparison-images {
    margin-top: 26px;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.comparison-images figure {
    margin: 0;
    background: #071b1d;
}

.comparison-images img {
    width: 100%;
    aspect-ratio: 4 / 5;
    display: block;
    object-fit: cover;
}

.comparison-images figcaption {
    padding: 12px;
    color: var(--level-white);
    font-size: 0.7rem;
    text-align: center;
    text-transform: uppercase;
}

.comparison-actions {
    margin-top: 14px;
    display: flex;
    justify-content: center;
    gap: 8px;
}

.reference-comparison {
    margin-top: 26px;
    display: grid;
    grid-template-columns: 1fr 90px 90px;
    border-top: 1px solid var(--level-line);
    border-left: 1px solid var(--level-line);
}

.reference-comparison > * {
    min-width: 0;
    padding: 12px;
    border-right: 1px solid var(--level-line);
    border-bottom: 1px solid var(--level-line);
}

.reference-comparison b {
    color: var(--level-aqua-deep);
    text-align: center;
}

.protocol-page {
    padding-bottom: 42px;
}

.protocol-empty,
.protocol-page-intro,
.protocol-page-layout,
.protocol-page-directions,
.protocol-page-footer {
    width: min(calc(100% - 40px), var(--level-content));
    margin-right: auto;
    margin-left: auto;
}

.protocol-empty {
    min-height: calc(100vh - 68px);
    padding: clamp(80px, 12vw, 160px) 0;
}

.protocol-empty > p,
.protocol-page-intro > p {
    margin: 0 0 12px;
    color: var(--level-aqua-deep);
    font-size: 0.69rem;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.protocol-empty h1,
.protocol-page-intro h1 {
    margin: 0;
    font-family: var(--level-font-display);
    font-size: clamp(3.8rem, 9vw, 8rem);
    font-weight: 400;
    line-height: 0.9;
}

.protocol-empty a {
    margin-top: 26px;
    display: inline-block;
    border-bottom: 1px solid var(--level-aqua-deep);
    font-size: 0.74rem;
    font-weight: 800;
    text-decoration: none;
    text-transform: uppercase;
}

.protocol-page-intro {
    padding: clamp(58px, 9vw, 112px) 0 38px;
}

.protocol-page-progress {
    height: 4px;
    margin-top: 34px;
    overflow: hidden;
    background: rgba(16, 43, 45, 0.11);
}

.protocol-page-progress span {
    height: 100%;
    display: block;
    background: var(--level-aqua-deep);
}

.protocol-page-intro small {
    margin-top: 10px;
    display: block;
    color: var(--level-ink-soft);
}

.protocol-page-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    gap: clamp(28px, 5vw, 64px);
}

.protocol-page-layout .protocol-page-steps {
    margin-top: 0;
    grid-template-columns: 1fr;
}

.protocol-page-steps strong {
    font-weight: 600;
}

.protocol-page-aside {
    position: sticky;
    top: 24px;
    padding: 30px;
    border: 1px solid var(--level-line);
    background: var(--level-aqua-pale);
}

.protocol-page-aside > strong {
    margin: 18px 0 8px;
    display: block;
    font-family: var(--level-font-display);
    font-size: 3.6rem;
    font-weight: 400;
}

.protocol-page-aside > span {
    display: block;
    color: var(--level-ink-soft);
    font-size: 0.82rem;
    line-height: 1.6;
}

.protocol-rescan {
    width: 100%;
    margin-top: 28px;
}

.protocol-pause {
    width: 100%;
    min-height: 42px;
    margin-top: 8px;
    border: 1px solid var(--level-line-strong);
    border-radius: 0;
    color: var(--level-ink);
    background: transparent;
    font-size: 0.71rem;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
}

.protocol-page-directions {
    margin-top: 54px;
    padding-top: 26px;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
    border-top: 1px solid var(--level-line);
}

.protocol-page-directions > p {
    width: 100%;
}

.protocol-page-directions span {
    padding: 9px 14px;
    border: 1px solid var(--level-line);
    border-radius: 999px;
    color: var(--level-ink-soft);
    background: var(--level-white);
    font-size: 0.72rem;
}

.protocol-page-footer {
    margin-top: 54px;
    padding: 26px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-top: 1px solid var(--level-line);
}

.protocol-page-footer p {
    margin: 0;
    color: var(--level-ink-soft);
    font-size: 0.74rem;
}

.protocol-page-footer button {
    padding: 7px 0;
    border: 0;
    border-bottom: 1px solid var(--level-aqua-deep);
    color: var(--level-ink);
    background: transparent;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    cursor: pointer;
}

@media (max-width: 820px) {
    .protocol-page-layout {
        grid-template-columns: 1fr;
    }

    .protocol-page-aside {
        position: static;
    }
}

@media (max-width: 620px) {
    .level-protocol,
    .protocol-empty,
    .protocol-page-intro,
    .protocol-page-layout,
    .protocol-page-directions,
    .protocol-page-footer {
        width: calc(100% - 28px);
    }

    .level-protocol {
        padding: 24px 18px;
    }

    .level-protocol-header,
    .protocol-goal,
    .protocol-save-row,
    .protocol-page-footer {
        align-items: flex-start;
        flex-direction: column;
    }

    .protocol-goal-options {
        justify-content: flex-start;
    }

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

    .protocol-directions article {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .comparison-images {
        grid-template-columns: 1fr;
    }

    .reference-comparison {
        grid-template-columns: 1fr 64px 64px;
        font-size: 0.72rem;
    }
}