.vsum { display: grid; gap: 1rem; margin: 1.25rem 0; }
.vsum-scene { position: relative; padding: 1rem; border: 1px solid var(--color-light-border, var(--border, rgba(120,120,120,.3))); border-radius: 16px; background: var(--surface-1, var(--surface, #fff)); }
.vsum-scene h3 { margin: 0 0 .75rem; font-size: 1.05rem; }
.vsum-input { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.vsum-picture { display: block; padding: 1rem; border-radius: 12px; background: var(--surface-2, rgba(var(--tint-rgb,47,91,79),.06)); }
.vsum-state { display: none; }
.vsum-step-1:checked ~ .vsum-picture > .vsum-state-1,
.vsum-step-2:checked ~ .vsum-picture > .vsum-state-2,
.vsum-step-3:checked ~ .vsum-picture > .vsum-state-3 { display: block; }
.vsum-controls { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.vsum-controls label { padding: .45rem .7rem; border: 1px solid var(--color-light-border, var(--border, rgba(120,120,120,.35))); border-radius: 999px; color: var(--color-light-text, var(--ink)); background: var(--surface-1, var(--surface, #fff)); font-size: .85rem; line-height: 1.3; cursor: pointer; }
.vsum-step-1:checked ~ .vsum-controls .vsum-label-1,
.vsum-step-2:checked ~ .vsum-controls .vsum-label-2,
.vsum-step-3:checked ~ .vsum-controls .vsum-label-3 { border-color: var(--color-light-primary, var(--accent)); color: var(--color-light-primary, var(--accent)); background: rgba(var(--tint-rgb,47,91,79),.12); }
.vsum-step-1:focus-visible ~ .vsum-controls .vsum-label-1,
.vsum-step-2:focus-visible ~ .vsum-controls .vsum-label-2,
.vsum-step-3:focus-visible ~ .vsum-controls .vsum-label-3 { outline: 3px solid rgba(var(--tint-rgb,47,91,79),.3); outline-offset: 2px; }
.vsum-row { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: .5rem; }
.vsum-stack { display: flex; flex-direction: column; align-items: center; gap: .4rem; }
.vsum-box { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: .45rem .65rem; border: 1px solid var(--color-light-border, var(--border, rgba(120,120,120,.35))); border-radius: 9px; background: var(--surface-1, var(--surface, #fff)); color: var(--color-light-text, var(--ink)); text-align: center; font-size: .85rem; line-height: 1.35; }
.vsum-good { border-color: var(--color-light-primary, var(--accent)); background: rgba(var(--tint-rgb,47,91,79),.16); }
.vsum-warn { border-color: #b3382c; color: #b3382c; background: rgba(179,56,44,.08); }
.vsum-arrow { color: var(--color-light-primary, var(--accent)); font-weight: 600; }
.vsum-caption { margin: .8rem 0 0; color: var(--color-light-text-secondary, var(--content-muted, var(--muted))); text-align: center; font-size: .9rem; line-height: 1.5; }
@media (max-width: 640px) { .vsum-scene { padding: .75rem; } .vsum-picture { padding: .65rem; } .vsum-controls label { flex: 1 1 130px; text-align: center; } }
@media (prefers-reduced-motion: reduce) { .vsum-scene *, .vsum-scene *::before, .vsum-scene *::after { transition: none !important; } }
.vsum-deck { position: relative; margin: 1.25rem 0; }
.vsum-deck-input { position: fixed; top: 0; left: 0; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.vsum-slide { display: none; }
.vsum-deck-step-1:checked ~ .vsum-slides > .vsum-slide-1,
.vsum-deck-step-2:checked ~ .vsum-slides > .vsum-slide-2,
.vsum-deck-step-3:checked ~ .vsum-slides > .vsum-slide-3,
.vsum-deck-step-4:checked ~ .vsum-slides > .vsum-slide-4,
.vsum-deck-step-5:checked ~ .vsum-slides > .vsum-slide-5,
.vsum-deck-step-6:checked ~ .vsum-slides > .vsum-slide-6,
.vsum-deck-step-7:checked ~ .vsum-slides > .vsum-slide-7,
.vsum-deck-step-8:checked ~ .vsum-slides > .vsum-slide-8,
.vsum-deck-step-9:checked ~ .vsum-slides > .vsum-slide-9,
.vsum-deck-step-10:checked ~ .vsum-slides > .vsum-slide-10 { display: block; }
.vsum-slide-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .75rem; }
.vsum-slide-head h3 { min-width: 0; overflow-wrap: anywhere; }
.vsum-slide-head h3 { margin: 0; }
.vsum-progress { flex: none; color: var(--color-light-text-secondary, var(--content-muted, var(--muted))); font-size: .85rem; }
.vsum-nav { display: flex; justify-content: space-between; gap: .75rem; margin-top: .75rem; }
.vsum-nav label { display: inline-flex; align-items: center; justify-content: center; min-height: 42px; padding: .5rem .9rem; border: 1px solid var(--color-light-primary, var(--accent)); border-radius: 999px; color: var(--color-light-primary, var(--accent)); background: var(--surface-1, var(--surface, #fff)); cursor: pointer; }
.vsum-nav label:hover { background: rgba(var(--tint-rgb,47,91,79),.12); }
.vsum-deck-step-1:focus-visible ~ .vsum-slides .vsum-slide-1 .vsum-nav label,
.vsum-deck-step-2:focus-visible ~ .vsum-slides .vsum-slide-2 .vsum-nav label,
.vsum-deck-step-3:focus-visible ~ .vsum-slides .vsum-slide-3 .vsum-nav label,
.vsum-deck-step-4:focus-visible ~ .vsum-slides .vsum-slide-4 .vsum-nav label,
.vsum-deck-step-5:focus-visible ~ .vsum-slides .vsum-slide-5 .vsum-nav label,
.vsum-deck-step-6:focus-visible ~ .vsum-slides .vsum-slide-6 .vsum-nav label,
.vsum-deck-step-7:focus-visible ~ .vsum-slides .vsum-slide-7 .vsum-nav label,
.vsum-deck-step-8:focus-visible ~ .vsum-slides .vsum-slide-8 .vsum-nav label,
.vsum-deck-step-9:focus-visible ~ .vsum-slides .vsum-slide-9 .vsum-nav label { outline: 3px solid rgba(var(--tint-rgb,47,91,79),.3); outline-offset: 2px; }
.vsum-slide-body { margin-top: .75rem; color: var(--color-light-text, var(--ink)); }
.vsum-slide-body p, .vsum-slide-body li { font-size: .95rem; line-height: 1.6; }
.vsum-slide-body ul { margin: .5rem 0 0; padding-left: 1.25rem; }
.vsum-slide-body svg { display: block; width: 100%; height: auto; margin: 0 auto; }
.vsum-slide-body .vsum-picture { margin-top: .75rem; }
@media (max-width: 640px) { .vsum-slide-head { align-items: flex-start; } .vsum-slide-head h3 { font-size: 1rem; } .vsum-nav label { flex: 1; padding: .5rem .65rem; } }
.vsum-picture .avz-base { stroke: var(--color-light-border, var(--border, rgba(120,120,120,.35))); stroke-width: 1.5; }
.vsum-picture .avz-bar { fill: var(--color-light-primary, var(--accent)); }
.vsum-picture .avz-bar-done { fill: var(--color-light-primary, var(--accent-ink)); }
.vsum-picture .avz-cell { fill: var(--surface-1, var(--surface, #fff)); stroke: var(--color-light-border, var(--border, rgba(120,120,120,.4))); stroke-width: 1.5; }
.vsum-picture .avz-cell-hi { fill: rgba(var(--tint-rgb,47,91,79),.18); stroke: var(--color-light-primary, var(--accent)); stroke-width: 2; }
.vsum-picture .avz-cell-out { fill: none; stroke: var(--color-light-border, var(--border, rgba(120,120,120,.3))); stroke-width: 1.5; }
.vsum-picture .avz-node { fill: var(--surface-1, var(--surface, #fff)); stroke: var(--color-light-primary, var(--accent)); stroke-width: 2; }
.vsum-picture .avz-node-hi { fill: var(--color-light-primary, var(--accent)); stroke: var(--color-light-primary, var(--accent)); }
.vsum-picture .avz-edge { stroke: var(--color-light-border, var(--border, rgba(120,120,120,.5))); stroke-width: 2; fill: none; }
.vsum-picture .avz-edge-hi { stroke: var(--color-light-primary, var(--accent-ink)); stroke-width: 2.5; fill: none; }
.vsum-picture .avz-ptr { stroke: var(--color-light-primary, var(--accent-ink)); stroke-width: 2; fill: none; }
.vsum-picture .avz-arrow { fill: var(--color-light-primary, var(--accent-ink)); stroke: none; }
.vsum-picture .avz-frame { fill: none; stroke: var(--color-light-primary, var(--accent-ink)); stroke-width: 2.5; stroke-dasharray: 6 4; }
.vsum-picture .avz-txt { fill: var(--color-light-text, var(--ink)); font: 600 12px 'JetBrains Mono',ui-monospace,monospace; }
.vsum-picture .avz-mut { fill: var(--color-light-text-secondary, var(--content-muted, var(--muted))); font: 12px 'JetBrains Mono',ui-monospace,monospace; }
.vsum-picture .avz-on { fill: var(--bg); font: 600 12px 'JetBrains Mono',ui-monospace,monospace; }
.vsum-deck-step-0:checked ~ .vsum-slides > .vsum-slide-0 { display: block; }
.vsum-slide-0 .vsum-prev { display: none; }
.vsum-deck .vsum-controls { display: none !important; }
.vsum-deck .vsum-picture > .vsum-state { display: block !important; }
.vsum-deck .vsum-picture > .vsum-state + .vsum-state { margin-top: 1rem; }
.vsum-cover { display: block; text-align: left; }
.vsum-cover-hero .part-label { display: none; }
.vsum-cover-hero .article-badges a { color: inherit; text-decoration: none; border: 0; }
.vsum-cover-phase { margin-left: 1rem; color: rgba(247, 243, 233, .58) !important; letter-spacing: .04em; }
.vsum-cover-hero .vsum-nav { justify-content: flex-end; margin-top: 2rem; }
.vsum-cover-hero .vsum-nav label { border-color: var(--public-mint, #bce4ce); color: var(--public-mint, #bce4ce); background: transparent; }
.vsum-cover-hero .vsum-nav label:hover { background: rgba(188, 228, 206, .1); }
@media (max-width: 640px) { .vsum-cover-phase { display: block; margin: .65rem 0 0; } .vsum-cover-hero .vsum-nav label { width: 100%; } }
.vsum-fullscreen { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 42px; width: 42px; height: 42px; padding: 0; border: 1px solid var(--color-light-primary, var(--accent)); border-radius: 10px; color: var(--color-light-primary, var(--accent)); background: var(--surface-1, var(--surface, #fff)); font: inherit; cursor: pointer; }
.vsum-fullscreen:hover { background: rgba(var(--tint-rgb,47,91,79),.12); }
.vsum-enter-fullscreen, .vsum-exit-fullscreen { align-items: center; justify-content: center; }
.vsum-enter-fullscreen { display: inline-flex; }
.vsum-exit-fullscreen { display: none; }
.vsum-fullscreen svg { width: 18px; height: 18px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-return { position: absolute; top: 50%; left: 50%; z-index: 6; display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1px solid var(--color-light-primary, var(--accent)); border-radius: 999px; color: var(--surface); background: var(--color-light-primary, var(--accent)); font-family: inherit; font-size: 16px; font-weight: 600; line-height: 1.3; transform: translate(-50%, -50%); cursor: pointer; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-return:hover { background: var(--color-light-primary-hover, var(--accent-ink)); }
.vsum-cover-hero .vsum-fullscreen { border-color: var(--public-mint, #bce4ce); color: var(--public-mint, #bce4ce); background: transparent; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) { box-sizing: border-box; width: 100%; height: 100vh; height: 100dvh; margin: 0; padding: clamp(12px, 3vw, 48px); overflow: hidden; background: var(--bg); }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slides { display: block; width: min(1200px, 100%); height: 100%; margin: 0 auto; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-scene { box-sizing: border-box; height: 100%; min-height: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-0:checked ~ .vsum-slides > .vsum-slide-0 { display: flex; flex-direction: column; justify-content: space-between; margin: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-1:checked ~ .vsum-slides > .vsum-slide-1,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-2:checked ~ .vsum-slides > .vsum-slide-2,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-3:checked ~ .vsum-slides > .vsum-slide-3,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-4:checked ~ .vsum-slides > .vsum-slide-4,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-5:checked ~ .vsum-slides > .vsum-slide-5,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-6:checked ~ .vsum-slides > .vsum-slide-6,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-7:checked ~ .vsum-slides > .vsum-slide-7,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-8:checked ~ .vsum-slides > .vsum-slide-8,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-9:checked ~ .vsum-slides > .vsum-slide-9 { display: grid; grid-template-columns: minmax(220px, .72fr) minmax(0, 1.8fr); grid-template-rows: auto minmax(0, 1fr) auto; gap: 14px 24px; padding: clamp(12px, 2vw, 28px); }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-10:checked ~ .vsum-slides > .vsum-slide-10 { display: block; margin: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-head { grid-column: 1 / -1; margin: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-head h3 { margin: 0; font-size: clamp(16px, 2vw, 26px); }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body { grid-column: 1; min-height: 0; margin: 0; overflow: hidden; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body p, .vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body li { font-size: clamp(12px, 1.3vw, 16px); line-height: 1.45; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-picture { grid-column: 2; display: flex; flex-direction: column; gap: 8px; min-height: 0; margin: 0; padding: 8px; overflow: hidden; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-picture > .vsum-state { flex: 1 1 0; min-height: 0; margin-top: 0 !important; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-picture svg { display: block; width: 100%; height: 100%; max-height: 100%; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover { margin: auto 48px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-nav { display: contents; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-nav label { position: absolute; top: 50%; z-index: 4; width: 48px; height: 48px; padding: 0; border-radius: 50%; font-size: 0; line-height: 1; transform: translateY(-50%); box-shadow: 0 2px 12px rgba(0,0,0,.16); }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-prev { left: 16px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-next { right: 16px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-prev::before, .vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-next::before { font-size: 24px; line-height: 1; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-prev::before { content: '←'; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-next::before { content: '→'; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-fullscreen { position: absolute; top: 16px; left: 16px; z-index: 5; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-head { padding-left: 56px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body { margin-left: 44px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-picture { margin-right: 44px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-enter-fullscreen { display: none; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-exit-fullscreen { display: inline-flex; }
.vsum-deck .vsum-nav { display: contents; }
.vsum-deck .vsum-nav label { position: absolute; top: 50%; z-index: 4; width: 48px; height: 48px; padding: 0; border-radius: 50%; font-size: 0; line-height: 1; transform: translateY(-50%); box-shadow: 0 2px 12px rgba(0,0,0,.16); }
.vsum-deck .vsum-prev { left: 16px; }
.vsum-deck .vsum-next { right: 16px; }
.vsum-deck .vsum-prev::before, .vsum-deck .vsum-next::before { font-size: 24px; line-height: 1; }
.vsum-deck .vsum-prev::before { content: '←'; }
.vsum-deck .vsum-next::before { content: '→'; }
.vsum-deck .vsum-fullscreen { position: absolute; top: 16px; left: 16px; z-index: 5; }
.vsum-deck .vsum-slide-head { padding-left: 56px; }
.vsum-deck .vsum-slide-body { margin-left: 44px; }
.vsum-deck .vsum-picture { margin-right: 44px; }
.vsum-deck .vsum-cover { margin: auto 24px; }
.vsum-deck .vsum-return { position: absolute; top: 50%; left: 50%; z-index: 6; display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 24px; border: 1px solid var(--color-light-primary, var(--accent)); border-radius: 999px; color: var(--surface); background: var(--color-light-primary, var(--accent)); font-family: inherit; font-size: 16px; font-weight: 600; line-height: 1.3; transform: translate(-50%, -50%); cursor: pointer; }
.vsum-deck.vsum-fullscreen-fallback { position: fixed; inset: 0; z-index: 999999; }
body.vsum-fullscreen-open { overflow: hidden !important; }
@media (max-width: 700px) {
.vsum-deck.vsum-fullscreen-fallback { bottom: calc(64px + env(safe-area-inset-bottom, 0px)); height: auto; z-index: var(--z-popover, 130); }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) { padding: 8px; overflow: hidden; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slides, .vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-scene { height: 100%; min-height: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-1:checked ~ .vsum-slides > .vsum-slide-1,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-2:checked ~ .vsum-slides > .vsum-slide-2,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-3:checked ~ .vsum-slides > .vsum-slide-3,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-4:checked ~ .vsum-slides > .vsum-slide-4,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-5:checked ~ .vsum-slides > .vsum-slide-5,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-6:checked ~ .vsum-slides > .vsum-slide-6,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-7:checked ~ .vsum-slides > .vsum-slide-7,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-8:checked ~ .vsum-slides > .vsum-slide-8,
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-9:checked ~ .vsum-slides > .vsum-slide-9 { display: flex; flex-direction: column; gap: 8px; padding: 52px 12px 12px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-head { min-height: 36px; padding-left: 44px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-head h3 { font-size: 16px; line-height: 1.25; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body { flex: 0 0 auto; margin: 0; overflow: hidden; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body p, .vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body li { font-size: 12px; line-height: 1.35; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body p { margin: .2rem 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide-body ul { margin: .3rem 0 0; padding-left: 1rem; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-picture { flex: 1 1 auto; min-height: 0; max-height: none; margin: 0; padding: 4px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-picture > .vsum-state { min-height: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-nav label { position: fixed; top: 50%; width: 42px; height: 42px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-prev { left: 10px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-next { right: 10px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-fullscreen { position: fixed; top: 12px; left: 12px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-return { position: fixed; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover { margin: auto 32px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero { padding: 28px 18px; }
}
@media (max-width: 700px) and (max-height: 700px) {
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero { padding: 20px 16px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero .article-eyebrow { margin-bottom: 14px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero .article-h1 { margin-bottom: 16px; font-size: 34px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero .article-badges { margin-bottom: 18px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero .article-lead { margin-bottom: 18px; font-size: 17px; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero .article-meta { font-size: 11px; }
}
.vsum-cover-hero { position: relative; margin: 0 0 32px; padding: 48px; overflow: hidden; border: 0; border-radius: 20px; color: #f7f3e9; background: radial-gradient(circle at 90% 10%, rgba(126, 190, 154, .18), transparent 34%), radial-gradient(circle at 4% 100%, rgba(188, 228, 206, .09), transparent 30%), #2e3d38; }
.vsum-cover-hero::before { content: ''; position: absolute; inset: 0; pointer-events: none; opacity: .13; background-image: linear-gradient(rgba(255, 255, 255, .06) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, .06) 1px, transparent 1px); background-size: 48px 48px; mask-image: linear-gradient(to right, transparent, #000); }
.vsum-cover-hero > * { position: relative; }
.vsum-cover-hero :is(h1, h2, h3, p, strong, em, span) { color: #f7f3e9 !important; }
.vsum-cover-hero .article-eyebrow { margin: 0 0 24px; color: #c9dbcf !important; font-family: var(--font-family-mono); font-size: 12px; letter-spacing: .12em; text-transform: uppercase; }
.vsum-cover-hero .article-h1 { max-width: 20ch; margin: 0 0 24px; color: #f7f3e9; font-family: var(--font-family-headings); font-size: clamp(40px, 6vw, 68px); font-weight: 500; line-height: 1.05; letter-spacing: -.025em; text-wrap: wrap; overflow-wrap: break-word; word-break: normal; }
.vsum-cover-hero .article-badges { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 32px; }
.vsum-cover-hero .article-badge { padding: 5px 12px; border: 1px solid rgba(247, 243, 233, .28); border-radius: 999px; font-family: var(--font-family-mono); font-size: 12px; line-height: 1.5; }
.vsum-cover-hero .article-badge { min-width: 0; overflow-wrap: anywhere; white-space: normal; }
.vsum-cover-hero .article-lead { max-width: 60ch; margin: 0 0 32px; color: rgba(247, 243, 233, .78) !important; font-family: var(--font-family-headings); font-size: 22px; font-style: italic; line-height: 1.5; }
.vsum-cover-hero .article-meta { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin: 0; color: rgba(247, 243, 233, .78) !important; font-family: var(--font-family-mono); font-size: 12px; letter-spacing: .04em; }
.vsum-cover-hero .article-meta-item { white-space: normal; }
.vsum-cover-hero .article-meta-dot { color: rgba(247, 243, 233, .32) !important; }
html[data-theme="dark"] .vsum-cover-hero { background: radial-gradient(circle at 90% 10%, rgba(135, 166, 149, .08), transparent 34%), #151817; }
@media (max-width: 640px) { .vsum-cover-hero { padding: 32px 20px; } .vsum-cover-phase { display: block; margin: 10px 0 0; } .vsum-cover-hero .article-h1 { font-size: clamp(26px, 7.5vw, 32px); overflow-wrap: break-word; word-break: normal; } .vsum-cover-hero .article-lead { font-size: 19px; } .vsum-cover-hero .article-meta-dot { display: none; } .vsum-cover-hero .vsum-nav label { width: calc(100% - 32px); } }
.vsum-deck .vsum-slide-body { display: block; margin-right: 44px; }
.vsum-deck .vsum-slide-head { padding-right: 44px; }
@media (max-width: 700px) { .presentation-page .site-nav-edge-toggle, .presentation-page .sidebar-toggle { display: none; } }
@media (max-width: 700px) {
.vsum-deck .vsum-cover { margin: auto 16px; }
.vsum-deck .vsum-slide:not(.vsum-slide-0) { padding-bottom: 76px; }
.vsum-deck .vsum-slide:not(.vsum-slide-0) .vsum-nav label { top: auto; bottom: 16px; transform: none; }
.vsum-deck .vsum-slide-body { margin: 0; }
.vsum-deck .vsum-picture { margin-right: 0; }
.vsum-cover-hero { padding-bottom: 80px; }
.vsum-cover-hero .vsum-nav label { top: auto; bottom: 16px; width: 42px; height: 42px; transform: none; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-slide:not(.vsum-slide-0) { padding-bottom: 64px !important; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-nav label { top: auto; bottom: 12px; transform: none; }
.vsum-deck.vsum-fullscreen-fallback .vsum-nav label { position: absolute; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero { padding-bottom: 80px; }
}
@media (max-width: 700px) and (max-height: 700px) {
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-cover-hero { padding-bottom: 70px; }
}
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .assist-panel { z-index: 20; }
@media (min-width: 768px) {
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback):has(.assist-panel.split) .vsum-slides { width: calc(100% - clamp(340px, 33vw, 560px)); margin: 0; }
}
.vsum-return-slide:has(.vsum-lesson-quiz) { padding: 52px clamp(12px, 3vw, 36px) 90px; overflow-y: auto; }
.vsum-return-slide:has(.vsum-lesson-quiz) .vsum-return { position: static; margin: 24px auto 0; transform: none; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-return-slide:has(.vsum-lesson-quiz) .vsum-return { position: absolute; top: auto; bottom: 18px; left: 50%; transform: translateX(-50%); }
.vsum-lesson-quiz { max-width: 760px; margin: 0 auto; }
.vsum-lesson-quiz .art-quiz { margin-top: 0; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) > .vsum-deck-step-6:checked ~ .vsum-slides > .vsum-return-slide:has(.vsum-lesson-quiz) { display: block; overflow: hidden; }
.vsum-deck:is(:fullscreen, .vsum-fullscreen-fallback) .vsum-return-slide .vsum-lesson-quiz { box-sizing: border-box; width: 100%; max-width: 900px; height: 100%; overflow-y: auto; scrollbar-gutter: stable; }
@media (max-width: 700px) {
.vsum-deck .vsum-slide-head { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: start; }
.vsum-deck .vsum-slide-head h3 { grid-column: 1 / -1; grid-row: 1; overflow-wrap: break-word; word-break: normal; }
.vsum-deck .vsum-progress { grid-column: 1; grid-row: 2; }
.vsum-deck .vsum-mentor-open { grid-column: 2; grid-row: 2; }
}
.vsum-mentor-open { margin-left: auto; padding: 6px 12px; border: 1px solid var(--color-light-primary, var(--accent)); border-radius: 999px; color: var(--color-light-primary, var(--accent)); background: var(--surface-1, var(--surface)); font: 600 12px/1.2 inherit; cursor: pointer; }
.vsum-mentor-open:hover { background: rgba(var(--tint-rgb,47,91,79),.12); }
.lesson-narration { display: grid; gap: 12px; }
.lesson-narration > h3 { margin: 0; }
.lesson-narration-text { display: grid; gap: 8px; }
.lesson-narration-text p, .lesson-narration-text ul { margin: 0; }
.lesson-example { min-width: 0; margin-top: 8px; }
.lesson-example-title { margin: 0 0 8px; color: var(--muted); font-size: 12px; }
.vsum-mentor-rail { position: absolute; top: 72px; left: 0; z-index: 30; display: flex; padding: 6px; border: 1px solid var(--color-light-border, var(--border)); border-left: 0; border-radius: 0 12px 12px 0; background: var(--surface-1, var(--surface)); }
.vsum-mentor-rail .tabbar-item { display: inline-flex; align-items: center; justify-content: center; width: 48px; height: 48px; padding: 0; }
.vsum-mentor-rail .tabbar-lbl { display: none; }