.page-content.project-page {
    width: min(100% - 4rem, 1200px);
}

.project-page h1 {
    margin-bottom: 2rem;
    font-size: clamp(1.8rem, 3vw, 2.2rem);
    line-height: 1.2;
}

.project-overview,
.project-status,
.diagram-feature {
    border: 1px solid var(--color-card-highlight);
    border-radius: 10px;
    background: linear-gradient(145deg, var(--color-card-background-start), var(--color-card-background-end));
    box-shadow: inset 0 1px 0 var(--color-card-inset), 0 22px 44px var(--color-card-shadow);
}

.project-overview,
.project-status {
    margin-bottom: 3rem;
    padding: clamp(1.25rem, 3vw, 2rem);
}

.project-overview h2,
.project-status h2,
.project-diagrams h2 {
    margin: 0 0 0.85rem;
    color: var(--color-accent);
    font-size: clamp(1.35rem, 2.5vw, 1.85rem);
}

.project-overview p,
.project-status p {
    max-width: 75ch;
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.65;
}

.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
}

.project-links a {
    padding: 0.7rem 1rem;
    border: 1px solid var(--color-card-highlight);
    border-radius: 6px;
    color: var(--color-text-primary);
}

.project-links a:hover,
.project-links a:focus-visible {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.project-diagrams > header {
    margin-bottom: 1.5rem;
}

.project-diagrams > header p {
    margin: 0;
    color: var(--color-text-muted);
}

.diagram-feature {
    display: grid;
    grid-template-columns: minmax(220px, 0.55fr) minmax(0, 1.45fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
    align-items: center;
    margin-bottom: 2rem;
    padding: clamp(1.25rem, 3vw, 2rem);
}

.diagram-copy h3 {
    margin: 0.55rem 0 0.85rem;
    color: var(--color-accent);
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    line-height: 1.15;
}

.diagram-copy p {
    margin: 0;
    color: var(--color-text-muted);
    line-height: 1.6;
}

.diagram-number {
    color: var(--color-accent) !important;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.diagram-surface,
.annex-diagram {
    display: grid;
    min-height: 390px;
    place-items: center;
    overflow: auto;
    padding: 1rem;
    border: 1px solid var(--color-card-highlight);
    border-radius: 7px;
    background: var(--color-card-background-start);
    color: var(--color-text-muted);
}

button.diagram-surface {
    position: relative;
    width: 100%;
    cursor: zoom-in;
}

button.diagram-surface:hover,
button.diagram-surface:focus-visible {
    border-color: var(--color-accent);
    outline: none;
}

.diagram-surface svg,
.annex-diagram svg {
    display: block;
    width: 100%;
    height: auto;
    max-height: 560px;
}

.diagram-expand {
    position: absolute;
    right: 0.7rem;
    bottom: 0.65rem;
    padding: 0.35rem 0.5rem;
    border-radius: 4px;
    background: var(--color-nav-background);
    color: var(--color-text-muted);
    font-size: 0.72rem;
    font-weight: 700;
}

.diagram-error {
    color: var(--color-text-muted);
}

.diagram-modal {
    width: min(96vw, 1500px);
    max-width: none;
    height: min(92vh, 960px);
    padding: 0;
    border: 1px solid var(--color-card-highlight);
    border-radius: 8px;
    background: var(--color-card-background-start);
    color: var(--color-text-primary);
}

.diagram-modal::backdrop {
    background: var(--color-modal-backdrop);
}

.diagram-modal-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.8rem 1rem;
    border-bottom: 1px solid var(--color-card-highlight);
}

.diagram-modal-bar p {
    margin: 0;
    font-weight: 700;
}

.diagram-modal-close,
.annex-controls button {
    padding: 0.5rem 0.7rem;
    border: 1px solid var(--color-card-highlight);
    border-radius: 4px;
    background: transparent;
    color: var(--color-text-primary);
    cursor: pointer;
}

.diagram-modal-content {
    display: grid;
    height: calc(100% - 57px);
    place-items: center;
    overflow: auto;
    padding: 1.25rem;
    background: var(--color-card-background-end);
}

.diagram-modal-content svg {
    width: max(100%, 1000px);
    height: auto;
}

.annex-body {
    min-height: 100vh;
    background: var(--color-card-background-end);
}

.annex-return {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 20;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

.annex-deck {
    display: grid;
    min-height: 100vh;
    place-items: center;
    padding: 3.5rem 2rem 5rem;
    box-sizing: border-box;
}

.annex-slide {
    width: min(100%, 1280px);
}

.annex-slide[hidden] {
    display: none;
}

.annex-intro {
    max-width: 720px;
    text-align: center;
}

.annex-intro h1 {
    margin: 0.5rem 0 1rem;
    font-size: clamp(2.2rem, 6vw, 5rem);
}

.annex-intro p,
.annex-label {
    color: var(--color-text-muted);
}

.annex-label {
    margin: 0 0 0.5rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.annex-slide h2 {
    margin: 0 0 1rem;
    font-size: clamp(1.5rem, 3vw, 2.4rem);
}

.annex-toolbar {
    display: grid;
    grid-template-columns: auto minmax(180px, 1fr) auto auto;
    gap: 0.65rem;
    align-items: center;
    margin-bottom: 0.75rem;
}

.annex-toolbar label {
    color: var(--color-text-muted);
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
}

.annex-toolbar select,
.annex-toolbar button {
    min-height: 38px;
    padding: 0.45rem 0.65rem;
    border: 1px solid var(--color-card-highlight);
    border-radius: 4px;
    background: var(--color-card-background-start);
    color: var(--color-text-primary);
}

.annex-toolbar button {
    cursor: pointer;
}

.annex-toolbar button:hover,
.annex-toolbar button:focus-visible {
    border-color: var(--color-accent);
}

.annex-diagram {
    height: clamp(280px, calc(100vh - 350px), 720px);
    min-height: 0;
}

.annex-caption {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.65rem;
    color: var(--color-text-muted);
    font-size: 0.75rem;
}

.annex-controls {
    position: fixed;
    right: 0;
    bottom: 0;
    left: 0;
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    padding: 0.75rem;
    border-top: 1px solid var(--color-card-highlight);
    background: var(--color-nav-background);
}

.annex-count {
    min-width: 5rem;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

@media (max-width: 760px) {
    .page-content.project-page {
        width: min(100% - 2rem, 1200px);
    }

    .diagram-feature {
        grid-template-columns: 1fr;
    }

    .diagram-surface,
    .annex-diagram {
        min-height: 300px;
        padding: 0.5rem;
    }

    .annex-deck {
        padding: 3.5rem 1rem 5rem;
    }

    .annex-toolbar {
        grid-template-columns: 1fr auto auto;
    }

    .annex-toolbar label {
        grid-column: 1 / -1;
    }
}