body {
    --mono: "Consolas", "Courier New", monospace;
    --serif: "Iowan Old Style", Georgia, "Times New Roman", serif;
    --sans: "Aptos", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: var(--space-5);
    background:
        linear-gradient(180deg, rgba(255, 255, 255, 0.02), transparent 18%),
        linear-gradient(180deg, #0e1215 0%, #090c0f 100%);
}

.page {
    max-width: 1480px;
    margin: 0 auto;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.eyebrow,
.section-label,
.choice-group legend,
.header-links a,
.slide-counter,
.meta-chip,
.key-hints {
    font-family: var(--mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.eyebrow {
    margin: 0 0 var(--space-3);
    color: rgba(255, 255, 255, 0.52);
    font-size: 11px;
}

.header-copy h1 {
    max-width: 10ch;
    margin-bottom: var(--space-3);
    font-family: var(--serif);
    font-size: clamp(3rem, 4.2vw, 4.9rem);
    font-weight: 500;
    letter-spacing: -0.06em;
    line-height: 0.92;
}

.intro {
    max-width: 66ch;
    color: rgba(255, 255, 255, 0.78);
    line-height: 1.72;
}

.header-links {
    display: grid;
    gap: var(--space-2);
    justify-items: end;
}

.header-links a {
    color: rgba(255, 255, 255, 0.76);
    font-size: 11px;
    text-decoration: none;
}

.header-links a:hover {
    color: rgba(255, 255, 255, 0.98);
}

.layout {
    display: grid;
    grid-template-columns: 380px minmax(0, 1fr);
    gap: var(--space-5);
    align-items: start;
}

.panel {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
}

.controls {
    position: sticky;
    top: var(--space-4);
    padding: var(--space-5);
}

.section + .section {
    margin-top: var(--space-5);
    padding-top: var(--space-5);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section-label {
    margin: 0 0 var(--space-3);
    color: rgba(255, 255, 255, 0.48);
    font-size: 10px;
}

.nav-row {
    display: flex;
    gap: var(--space-2);
}

.nav-row button {
    appearance: none;
    padding: 10px 14px;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.84);
    font-family: var(--mono);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    cursor: pointer;
}

.nav-row button:hover {
    border-color: rgba(255, 255, 255, 0.24);
    color: rgba(255, 255, 255, 0.98);
}

.slide-counter {
    margin: var(--space-3) 0 0;
    color: rgba(255, 255, 255, 0.62);
    font-size: 11px;
}

.choice-group {
    padding: 0;
    margin: 0;
    border: 0;
}

.choice-group legend {
    padding: 0;
    margin-bottom: var(--space-3);
    color: rgba(255, 255, 255, 0.48);
    font-size: 10px;
}

.choice-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-2);
}

.choice-list-stacked {
    grid-template-columns: 1fr;
}

.choice-option {
    display: grid;
}

.choice-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.choice-option span {
    display: block;
    padding: 12px 12px 13px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.82);
    font-size: 0.92rem;
    line-height: 1.45;
    cursor: pointer;
}

.choice-option strong {
    display: block;
    margin-bottom: 6px;
    font-family: var(--serif);
    font-size: 1rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.choice-option input:checked + span {
    border-color: rgba(242, 193, 112, 0.5);
    background: rgba(242, 193, 112, 0.12);
}

.toggle-list {
    display: grid;
    gap: var(--space-2);
}

.case-grid {
    display: grid;
    gap: var(--space-3);
}

.case-field {
    display: grid;
    gap: 8px;
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--text-sm);
}

.case-field span,
.section-note {
    color: rgba(255, 255, 255, 0.58);
}

.case-field span {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.case-field select {
    appearance: none;
    padding: 10px 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.84);
    font-family: var(--sans);
    font-size: 0.95rem;
}

.section-note {
    margin: var(--space-3) 0 0;
    font-size: var(--text-sm);
    line-height: 1.6;
}

.toggle-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 12px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.82);
    font-size: var(--text-sm);
}

.toggle-row input {
    accent-color: var(--accent);
}

.slide-list {
    display: grid;
    gap: var(--space-2);
}

.slide-item {
    width: 100%;
    padding: 13px 14px 14px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.84);
    text-align: left;
    cursor: pointer;
}

.slide-item.active {
    border-color: rgba(242, 193, 112, 0.5);
    background: rgba(242, 193, 112, 0.12);
}

.slide-item strong {
    display: block;
    margin-bottom: 4px;
    font-family: var(--serif);
    font-size: 1.05rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.slide-item span {
    display: block;
    color: rgba(255, 255, 255, 0.58);
    font-size: var(--text-xs);
}

.controls h2 {
    margin-bottom: var(--space-2);
    font-family: var(--serif);
    font-size: 1.45rem;
    font-weight: 500;
    letter-spacing: -0.03em;
}

.notes-body {
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.7;
}

.key-hints {
    display: grid;
    gap: var(--space-2);
    margin: var(--space-4) 0 0;
    padding: 0;
    list-style: none;
    color: rgba(255, 255, 255, 0.58);
    font-size: 10px;
}

kbd {
    display: inline-block;
    margin-right: 4px;
    padding: 2px 6px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.04);
    color: rgba(255, 255, 255, 0.78);
    font-family: var(--mono);
    font-size: 10px;
}

.preview-panel {
    display: grid;
    gap: var(--space-4);
    padding: var(--space-5);
}

.preview-top {
    display: flex;
    justify-content: space-between;
    align-items: end;
    gap: var(--space-5);
}

.preview-copy h2 {
    margin-bottom: var(--space-2);
    font-family: var(--serif);
    font-size: clamp(2rem, 2.8vw, 2.8rem);
    font-weight: 500;
    letter-spacing: -0.03em;
}

.current-summary {
    max-width: 62ch;
    color: rgba(255, 255, 255, 0.72);
    line-height: 1.7;
}

.preview-tools {
    display: grid;
    gap: var(--space-3);
    justify-items: end;
}

.meta-row {
    display: flex;
    flex-wrap: wrap;
    justify-content: end;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.meta-chip {
    padding: 6px 10px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    color: rgba(255, 255, 255, 0.68);
    font-size: 10px;
}

.preview-note {
    max-width: 34ch;
    margin: 0;
    color: rgba(255, 255, 255, 0.64);
    font-size: var(--text-sm);
    line-height: 1.66;
    text-align: right;
}

.live-demo-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: end;
    gap: 8px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.live-demo-links a {
    display: inline-flex;
    align-items: center;
    padding: 7px 10px;
    border: 1px solid rgba(242, 193, 112, 0.26);
    background: rgba(242, 193, 112, 0.08);
    color: rgba(255, 243, 219, 0.88);
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
}

.live-demo-links a:hover {
    border-color: rgba(242, 193, 112, 0.42);
    color: rgba(255, 248, 235, 0.98);
}

.preview-stage {
    position: relative;
    padding-top: var(--space-1);
}

.audience-frame {
    display: block;
    width: 100%;
    min-height: 980px;
    border: 0;
    background: transparent;
}

@media (max-width: 1220px) {
    .page-header,
    .layout,
    .preview-top {
        display: grid;
        grid-template-columns: 1fr;
    }

    .header-links,
    .preview-tools,
    .meta-row,
    .live-demo-links {
        justify-items: start;
        justify-content: start;
    }

    .preview-note {
        text-align: left;
    }

    .controls {
        position: static;
    }
}

@media (max-width: 780px) {
    body {
        padding: var(--space-4);
    }

    .controls,
    .preview-panel {
        padding: var(--space-4);
    }

    .choice-list {
        grid-template-columns: 1fr;
    }

    .audience-frame {
        min-height: 840px;
    }
}