:root{color-scheme:dark;--bg:#07090f;--panel:#10141f;--panel-soft:#151a28;--text:#f5f7fb;--muted:#9aa4b8;--line:#283044;--border:#283044;--accent:#8fb3ff;--accent-strong:#d5e2ff;--radius-card:20px;--page-pad:28px;--section-gap:28px}*{box-sizing:border-box}html{scroll-behavior:smooth}body,html{overflow-x:hidden}body{margin:0;background:radial-gradient(circle at 50% -10%,rgba(75,103,170,.24),transparent 35%),var(--bg);color:var(--text);font-family:Segoe UI,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.7}button,input{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.nav-shell{width:min(1500px,calc(100% - 2 * var(--page-pad)));margin:0 auto;min-height:76px;display:flex;align-items:center;justify-content:space-between;color:var(--muted)}.back-link,.brand,.nav-actions,.nav-actions button{display:flex;align-items:center;gap:9px}.brand{color:var(--text);font-weight:700}.nav-actions{gap:10px}.branch-button,.nav-actions button,.primary-button,.retry-button{border:1px solid var(--line);background:var(--panel);color:var(--text);border-radius:10px;padding:10px 14px;display:inline-flex;align-items:center;gap:8px}.hero{width:min(980px,calc(100% - 2 * var(--page-pad)));margin:92px auto 110px;text-align:center}.eyebrow{color:var(--accent);display:flex;align-items:center;justify-content:center;gap:8px;font-size:.85rem;text-transform:uppercase;letter-spacing:.12em}.hero h1{font-size:clamp(3rem,8vw,6.5rem);line-height:.98;margin:24px 0;letter-spacing:-.06em}.hero-copy{max-width:720px;margin:0 auto 38px;font-size:1.2rem;line-height:1.7;color:var(--muted)}.scenario-builder{max-width:850px;margin:0 auto}.scenario-builder label{display:block;text-align:left;color:var(--accent-strong);margin-bottom:10px;font-size:.9rem}.depth-control{margin-top:16px;border:1px solid var(--line);border-radius:16px;padding:14px 16px 16px;text-align:left;background:rgba(16,20,31,.55)}.depth-control legend{padding:0 6px;color:var(--accent);text-transform:uppercase;letter-spacing:.1em;font-size:.72rem}.depth-options{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));grid-gap:10px;gap:10px;margin-top:8px}.depth-options label{display:grid;grid-gap:4px;gap:4px;margin:0;padding:12px;border:1px solid var(--line);border-radius:12px;cursor:pointer;color:var(--muted);background:transparent}.depth-options label.active{border-color:var(--accent);background:rgba(143,179,255,.08);color:var(--text)}.depth-options input{position:absolute;opacity:0;pointer-events:none}.depth-label{color:var(--text);font-weight:700;font-size:.95rem}.depth-copy{font-size:.82rem;line-height:1.45;color:var(--muted)}.prompt-row{display:flex;gap:12px;background:rgba(16,20,31,.9);border:1px solid var(--line);border-radius:18px;padding:10px;box-shadow:0 20px 70px rgba(0,0,0,.35)}.prompt-row input{flex:1 1;min-width:0;background:transparent;border:0;outline:0;color:var(--text);padding:14px;font-size:1.05rem}.prompt-row button{border:0;border-radius:12px;padding:0 22px;background:var(--accent-strong);color:#0b1020;font-weight:800;display:flex;align-items:center;gap:8px;white-space:nowrap}.examples{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:16px}.examples button,.filter-row button{border:1px solid var(--line);background:transparent;color:var(--muted);padding:9px 12px;border-radius:999px}.examples button:hover,.filter-row button.active{color:var(--text);border-color:var(--accent);background:rgba(143,179,255,.08)}.feature-grid{width:min(1100px,calc(100% - 2 * var(--page-pad)));margin:0 auto 100px;display:grid;grid-template-columns:repeat(3,1fr);grid-gap:18px;gap:18px}.content-card,.event-card,.feature-grid article,.sidebar-card{width:100%;box-sizing:border-box;background:linear-gradient(180deg,rgba(21,26,40,.96),rgba(14,18,28,.96));border:1px solid var(--line);border-radius:var(--radius-card);overflow-wrap:anywhere}.feature-grid article{padding:28px}.feature-grid svg{color:var(--accent)}.feature-grid h2{margin:18px 0 10px}.feature-grid p{color:var(--muted);line-height:1.7}.scenario-page-shell{width:min(1500px,calc(100% - 2 * var(--page-pad)));margin:0 auto 100px}.scenario-hero{width:100%;margin:48px 0 var(--section-gap);text-align:left;max-width:920px}.scenario-hero .eyebrow{justify-content:flex-start}.scenario-hero h1{font-size:clamp(2.4rem,5vw,3.6rem);line-height:1.05;letter-spacing:-.04em;margin:14px 0 10px}.scenario-title-line{margin:0 0 8px;font-size:1.25rem;color:var(--accent-strong);font-weight:600}.question{color:var(--accent);font-size:1.05rem;margin:0 0 14px}.summary{font-size:1.05rem;line-height:1.75;margin:0 0 16px}.disclaimer-note,.summary{max-width:72ch;color:var(--muted)}.disclaimer-note{margin:0;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:rgba(143,179,255,.06);font-size:.92rem;line-height:1.65}.deep-progress{display:flex;flex-wrap:wrap;gap:8px 16px;align-items:baseline;margin:0 0 18px;padding:12px 16px;border:1px solid var(--line);border-radius:14px;background:rgba(143,179,255,.07)}.deep-progress strong{color:var(--accent-strong)}.deep-progress span{color:var(--muted);font-size:.95rem}.detail-state-chip{display:inline-flex;align-items:center;padding:3px 8px;border-radius:999px;border:1px solid var(--line);font-size:.7rem;color:var(--muted)}.detail-state-chip.ready{border-color:rgba(110,231,183,.35);color:#a7f3d0}.detail-status{display:grid;grid-gap:12px;gap:12px;align-items:start}.detail-status p{margin:0}.detail-skeleton{display:grid;grid-gap:8px;gap:8px}.detail-skeleton span{display:block;height:10px;border-radius:999px;background:linear-gradient(90deg,hsla(0,0%,100%,.04),hsla(0,0%,100%,.1),hsla(0,0%,100%,.04));background-size:200% 100%;animation:shimmer 1.4s linear infinite}.detail-skeleton span:nth-child(2){width:86%}.detail-skeleton span:nth-child(3){width:72%}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.section-loading h2{margin-bottom:8px}.scenario-layout{width:100%;display:grid;grid-template-columns:minmax(360px,400px) minmax(0,1fr);grid-gap:var(--section-gap);gap:var(--section-gap);align-items:start}.scenario-sidebar{grid-gap:16px;gap:16px;position:-webkit-sticky;position:sticky;top:24px}.scenario-sidebar,.timeline-panel{display:grid;width:100%;min-width:0}.timeline-panel{grid-gap:var(--section-gap);gap:var(--section-gap)}.sidebar-card{padding:24px 26px}.card-eyebrow,.section-heading span,.sidebar-card span{color:var(--accent);text-transform:uppercase;letter-spacing:.12em;font-size:.75rem}.sidebar-card h2{font-size:1.2rem;margin:10px 0 8px;line-height:1.35}.sidebar-date{display:block;color:var(--accent-strong);margin-bottom:10px;font-size:.95rem}.muted-copy,.sidebar-card li,.sidebar-card p{color:var(--muted);line-height:1.7}.sidebar-card ul{padding-left:18px;margin:8px 0 0}.sidebar-subblock{margin-top:16px;padding-top:14px;border-top:1px solid var(--line)}.sidebar-subblock h3{margin:0 0 8px;font-size:.92rem;color:var(--text)}.sidebar-subblock p{margin:0}.plausibility-header{margin:12px 0 10px}.section-heading h2{font-size:clamp(1.8rem,3vw,2.2rem);margin:8px 0 4px;letter-spacing:-.02em}.filter-row{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;min-height:42px}.timeline{position:relative;width:100%}.timeline:before{content:"";position:absolute;left:56px;top:0;bottom:0;width:1px;background:var(--line)}.timeline-item{display:grid;grid-template-columns:110px minmax(0,1fr);position:relative;margin-bottom:20px;width:100%}.timeline-marker{position:absolute;left:50px;top:34px;width:13px;height:13px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 6px var(--bg)}.timeline-year{padding-top:24px;display:flex;flex-direction:column;gap:4px;min-width:0}.timeline-date{color:var(--accent-strong);font-weight:800;font-size:.95rem;line-height:1.3;overflow-wrap:anywhere}.timeline-era{color:var(--muted);font-size:.75rem;line-height:1.4;overflow-wrap:anywhere}.event-card{overflow:hidden}.event-header{width:100%;border:0;background:transparent;color:var(--text);padding:24px 26px;display:flex;justify-content:space-between;gap:16px;text-align:left}.event-header-copy{min-width:0;flex:1 1}.event-meta-row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:8px}.event-header h3{margin:0 0 8px;font-size:1.3rem;line-height:1.35;overflow-wrap:anywhere}.event-header p{margin:0;color:var(--muted);line-height:1.65;max-width:70ch}.category-badge{color:var(--accent);font-size:.76rem;text-transform:uppercase;letter-spacing:.1em}.confidence-badge{display:inline-flex;align-items:center;padding:4px 10px;border-radius:999px;font-size:.75rem;border:1px solid var(--line);color:var(--muted);background:hsla(0,0%,100%,.03)}.confidence-high{border-color:rgba(110,231,183,.35);color:#a7f3d0}.confidence-moderate{border-color:rgba(251,191,36,.35);color:#fde68a}.confidence-low{border-color:hsla(0,91%,71%,.35);color:#fecaca}.event-header svg{transition:transform .2s ease;flex-shrink:0;margin-top:4px}.event-header svg.rotate{transform:rotate(180deg)}.event-details{border-top:1px solid var(--line);padding:24px 26px;color:var(--muted);line-height:1.75;display:grid;grid-gap:18px;gap:18px}.detail-block h4{color:var(--text);margin:0 0 8px;font-size:.95rem}.detail-block p{margin:0;max-width:70ch}.detail-block ul{margin:0;padding-left:18px}.detail-columns{display:grid;grid-template-columns:1fr 1fr;grid-gap:20px;gap:20px}.tone-note{margin:0;padding:12px 14px;border-left:2px solid var(--accent);color:var(--accent-strong);font-style:italic;line-height:1.65}.inline-source-list a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.empty-filter-state{min-height:120px;display:grid;place-content:center;padding:28px;border:1px dashed var(--line);border-radius:var(--radius-card);color:var(--muted);text-align:center}.content-card{padding:26px 28px}.content-card h2{margin:8px 0 18px;font-size:1.5rem}.final-state-grid,.outcome-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}.final-state-item,.outcome-card{padding:18px;border:1px solid var(--line);border-radius:14px;background:hsla(0,0%,100%,.02);min-width:0}.final-state-item h3,.outcome-card h3{margin:8px 0;font-size:1.05rem;color:var(--text)}.final-state-item p,.outcome-card p{margin:0;color:var(--muted);line-height:1.7}.probability-badge{display:inline-block;font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--accent)}.sources-list{list-style:none;padding:0;margin:0;display:grid;grid-gap:12px;gap:12px}.sources-list a{color:var(--accent-strong);text-decoration:underline;text-underline-offset:3px;overflow-wrap:anywhere}.source-publisher{display:block;margin-top:4px;color:var(--muted);font-size:.9rem}.form-error,.generation-status{margin-top:14px;padding:12px 14px;border:1px solid var(--border);border-radius:12px;color:var(--muted);line-height:1.55}.generation-status{display:flex;align-items:flex-start;gap:10px;background:rgba(143,179,255,.06)}.generation-status-copy{display:grid;grid-gap:4px;gap:4px;text-align:left}.generation-status-copy strong{color:var(--text);font-weight:650}.generation-status-copy span{font-size:.92rem}.form-error{border-color:hsla(0,91%,71%,.55);color:#fecaca;background:rgba(127,29,29,.18)}.preserved-prompt{margin:10px 0;color:var(--muted)}.retry-button{margin-top:8px}button:disabled,input:disabled{opacity:.65;cursor:not-allowed}.state-page{min-height:100vh;display:grid;place-content:center;justify-items:center;grid-gap:16px;gap:16px;text-align:center;padding:24px}.state-page .spin{display:block;margin:0 auto}.state-page p{margin:0;max-width:36rem}.state-card{width:min(620px,100%);padding:36px;border:1px solid var(--border);border-radius:22px;background:var(--panel);box-sizing:border-box}.state-card p{color:var(--muted);line-height:1.7}.error-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:16px}.primary-link{display:inline-flex;align-items:center;gap:8px;margin-top:12px;color:#fff;text-decoration:none}.spin{animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}@media (max-width:1100px){.scenario-layout{grid-template-columns:minmax(280px,320px) minmax(0,1fr);gap:24px}}@media (max-width:800px){:root{--page-pad:20px}.depth-options,.detail-columns,.feature-grid,.final-state-grid,.outcome-grid,.scenario-layout{grid-template-columns:1fr}.scenario-sidebar{position:static}.prompt-row{flex-direction:column}.prompt-row button{justify-content:center;padding:14px}.timeline-item{grid-template-columns:82px minmax(0,1fr)}.timeline:before{left:37px}.timeline-marker{left:31px}.content-card,.event-details,.event-header,.sidebar-card{padding:20px}.nav-shell{width:min(1500px,calc(100% - 40px))}}