:root{--color-paper: oklch(13% .018 250);--color-paper-2: oklch(18% .02 250);--color-paper-3: oklch(22% .022 250);--color-ink: oklch(95% .012 86);--color-ink-soft: oklch(87% .018 245);--color-neutral: oklch(74% .022 245);--color-muted: oklch(64% .025 245);--color-rule: oklch(35% .024 245);--color-rule-strong: oklch(47% .035 245);--color-accent: oklch(78% .14 82);--color-accent-soft: oklch(88% .105 88);--color-accent-ink: oklch(18% .035 82);--color-focus: oklch(86% .14 88);--color-success: oklch(72% .15 145);--color-error: oklch(67% .2 28);--color-risk-1: oklch(70% .16 145);--color-risk-2: oklch(82% .16 92);--color-risk-3: oklch(75% .18 62);--color-risk-4: oklch(66% .21 28);--color-shadow: oklch(5% .01 250 / .58);--font-display: "STHeiti", "Microsoft YaHei", sans-serif;--font-body: "PingFang SC", "Noto Sans CJK SC", sans-serif;--font-outlier: "DIN Condensed", "Arial Narrow", sans-serif;--space-3xs: .125rem;--space-2xs: .25rem;--space-xs: .5rem;--space-sm: .75rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2.5rem;--space-2xl: 4rem;--space-3xl: 6rem;--text-xs: .64rem;--text-sm: .8rem;--text-base: 1rem;--text-md: 1.25rem;--text-lg: 1.5625rem;--text-xl: 1.9531rem;--text-2xl: 2.4414rem;--text-3xl: 3.0518rem;--text-4xl: 3.8147rem;--text-display: clamp(3.2rem, 7vw, 5.25rem);--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in: cubic-bezier(.7, 0, .84, 0);--ease-in-out: cubic-bezier(.65, 0, .35, 1);--dur-micro: .12s;--dur-short: .2s;--dur-long: .42s;--radius-sm: .5rem;--radius-md: .875rem;--radius-lg: 1.4rem;--radius-pill: 999px;--rule-hair: 1px;--rule-bold: 2px;--shadow-panel: 0 1.5rem 4rem var(--color-shadow);--z-base: 1;--z-raised: 10;--z-overlay: 20;--z-sticky: 200}*{box-sizing:border-box}html,body{overflow-x:clip}html,body,#root{min-width:20rem;min-height:100%;margin:0}body{min-height:100svh;color:var(--color-ink);background:var(--color-paper);font-family:var(--font-body);font-size:var(--text-base);font-synthesis:none;text-rendering:optimizeLegibility}button{border:0;font:inherit}button:focus-visible{outline:3px solid var(--color-focus);outline-offset:var(--space-2xs)}h1,h2,h3,p{margin-block-start:0}h1,h2,h3{min-width:0;overflow-wrap:anywhere;font-family:var(--font-display);font-style:normal;text-wrap:balance}.app-shell{position:relative;isolation:isolate;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto;gap:var(--space-sm);min-height:100svh;padding:var(--space-sm) clamp(var(--space-md),4vw,var(--space-2xl))}.backdrop{position:fixed;z-index:calc(var(--z-base) * -1);inset:0;background:linear-gradient(90deg,color-mix(in oklch,var(--color-paper) 96%,transparent),color-mix(in oklch,var(--color-paper) 56%,transparent)),linear-gradient(0deg,color-mix(in oklch,var(--color-paper) 88%,transparent),transparent 62%),url(/gold-rush-hero.jpg) 62% center / cover no-repeat,var(--color-paper)}.noise{position:fixed;z-index:var(--z-base);inset:0;pointer-events:none;opacity:.07;background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");mix-blend-mode:soft-light}.topbar,.hud,.stage-card,.control-deck{width:min(100%,92.5rem);margin-inline:auto}.topbar{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;min-height:3.5rem}.brand{display:inline-flex;align-items:center;gap:var(--space-sm);width:max-content}.brand>span{display:grid;place-items:center;width:2.65rem;height:2.65rem;border:var(--rule-hair) solid var(--color-accent);border-radius:50%;color:var(--color-accent-ink);background:var(--color-accent);font-family:var(--font-outlier);font-size:var(--text-sm);font-weight:800}.brand div{display:flex;flex-direction:column}.brand strong{font-family:var(--font-display);font-size:var(--text-base);font-weight:800;letter-spacing:.08em}.brand small{display:none;color:var(--color-muted);font-family:var(--font-body);font-size:var(--text-xs);letter-spacing:.12em}.round-label{display:none;align-items:baseline;gap:var(--space-xs);color:var(--color-muted)}.round-label span,.round-label i{font-family:var(--font-body);font-size:var(--text-xs);font-style:normal;letter-spacing:.12em}.round-label strong{color:var(--color-accent-soft);font-family:var(--font-outlier);font-size:var(--text-xl);font-variant-numeric:tabular-nums}.timer{justify-self:end;display:flex;align-items:baseline;gap:var(--space-xs);min-height:2.75rem;padding-inline:var(--space-sm);border:var(--rule-hair) solid var(--color-rule-strong);border-radius:var(--radius-pill);color:var(--color-neutral);background:var(--color-paper-2)}.timer span,.timer em{display:none;font-size:var(--text-xs);font-style:normal}.timer strong{color:var(--color-accent-soft);font-family:var(--font-body);font-size:var(--text-lg);font-variant-numeric:tabular-nums}.hud{display:grid;grid-template-columns:minmax(0,1fr);border:var(--rule-hair) solid var(--color-rule);border-radius:var(--radius-md);background:var(--color-paper-2);overflow:hidden}.hud-item{display:flex;align-items:center;justify-content:space-between;gap:var(--space-sm);min-height:2.75rem;padding:var(--space-xs) var(--space-md);border-block-end:var(--rule-hair) solid var(--color-rule)}.hud-item:last-child{border-block-end:0}.hud-item span{color:var(--color-neutral);font-size:var(--text-sm)}.hud-item strong{white-space:nowrap;font-size:var(--text-sm);font-variant-numeric:tabular-nums}.hud-item.danger strong,.hud-item.storm strong{color:var(--color-error)}.hud-item.gold-status strong{color:var(--color-accent-soft)}.supply-blocks{display:flex;gap:var(--space-2xs)}.supply-blocks i{display:block;width:1.1rem;height:var(--space-xs);border-radius:var(--space-3xs);background:var(--color-paper-3)}.supply-blocks i.filled{background:var(--color-accent)}.stage-card{position:relative;z-index:var(--z-raised);display:grid;place-items:center;min-height:0;padding:var(--space-2xl) var(--space-md) var(--space-xl);border:var(--rule-hair) solid var(--color-rule-strong);border-radius:var(--radius-lg);color:var(--color-ink);background:var(--color-paper-2);box-shadow:var(--shadow-panel);overflow:auto}.stage-card:before,.stage-card:after{position:absolute;width:2rem;height:2rem;border-color:var(--color-accent);content:"";opacity:.55}.stage-card:before{inset-block-start:var(--space-sm);inset-inline-start:var(--space-sm);border-block-start:var(--rule-hair) solid;border-inline-start:var(--rule-hair) solid}.stage-card:after{inset-inline-end:var(--space-sm);inset-block-end:var(--space-sm);border-inline-end:var(--rule-hair) solid;border-block-end:var(--rule-hair) solid}.stage-index{position:absolute;z-index:var(--z-overlay);inset-block-start:var(--space-md);inset-inline-end:var(--space-lg);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-pill);color:var(--color-muted);background:var(--color-paper-2);font-family:var(--font-body);font-size:var(--text-xs);letter-spacing:.1em}.stage-card section{width:min(100%,71.875rem);animation:stage-in var(--dur-long) var(--ease-out) both}.eyebrow{margin-block-end:var(--space-sm);color:var(--color-accent-soft);font-family:var(--font-body);font-size:var(--text-xs);font-weight:700;letter-spacing:.14em}h1{max-width:48rem;margin-block-end:var(--space-lg);font-size:var(--text-display);font-weight:800;line-height:.98;letter-spacing:-.04em}h2{margin-block-end:var(--space-md);font-size:clamp(var(--text-xl),4vw,var(--text-3xl));font-weight:800;line-height:1.06;letter-spacing:-.035em}.lead,.story-copy{max-width:65ch;color:var(--color-ink-soft);font-size:var(--text-base);line-height:1.7}.lead{margin-block-end:var(--space-xl)}.mission-card,.impact-card,.discussion-card{display:grid;gap:var(--space-xs);max-width:48rem;padding:var(--space-md) var(--space-lg);border-block-start:var(--rule-hair) solid var(--color-accent);color:var(--color-ink);background:var(--color-paper-3)}.mission-card span,.impact-card span,.discussion-card span{color:var(--color-accent-soft);font-family:var(--font-body);font-size:var(--text-xs);letter-spacing:.1em}.mission-card strong,.impact-card strong,.discussion-card strong{font-size:var(--text-base);line-height:1.6}.route-preview{display:flex;flex-wrap:wrap;gap:var(--space-xs);margin-block-start:var(--space-lg)}.route-preview span{padding:var(--space-xs) var(--space-sm);border:var(--rule-hair) solid var(--color-rule-strong);border-radius:var(--radius-pill);color:var(--color-neutral);background:var(--color-paper-3);font-size:var(--text-xs)}.story-stage{max-width:55rem}.story-copy{margin-block-end:var(--space-lg)}blockquote{margin:0;padding:var(--space-md) var(--space-lg);border-inline-start:var(--rule-hair) solid var(--color-accent);color:var(--color-accent-soft);background:var(--color-paper-3);font-size:var(--text-md);font-style:italic;line-height:1.6}.section-heading{display:grid;gap:var(--space-md);margin-block-end:var(--space-lg)}.section-heading h2{margin-block-end:0}.submit-status{display:flex;flex-direction:column;align-items:flex-start}.submit-status strong{color:var(--color-accent-soft);font-family:var(--font-body);font-size:var(--text-xl);font-variant-numeric:tabular-nums}.submit-status span{color:var(--color-neutral);font-size:var(--text-xs)}.option-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:var(--space-sm)}.option-card{position:relative;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:var(--space-sm);min-height:5.5rem;padding:var(--space-sm);border:var(--rule-hair) solid color-mix(in oklch,var(--risk-color) 60%,var(--color-rule));border-radius:var(--radius-md);color:var(--color-ink);background:var(--color-paper-3);cursor:pointer;text-align:start;transition:border-color var(--dur-short) var(--ease-out),background-color var(--dur-short) var(--ease-out),transform var(--dur-micro) var(--ease-out)}.option-card.selected{border-width:var(--rule-bold);border-color:var(--risk-color);background:color-mix(in oklch,var(--risk-color) 14%,var(--color-paper-3));transform:translateY(calc(var(--space-2xs) * -1))}.option-key{display:grid;place-items:center;width:2.25rem;height:2.25rem;border:var(--rule-hair) solid var(--risk-color);border-radius:50%;color:var(--risk-color);font-family:var(--font-body);font-size:var(--text-md);font-weight:800}.option-card h3{margin-block-end:var(--space-2xs);font-size:var(--text-md);font-weight:800}.option-card p{margin-block-end:0;color:var(--color-neutral);font-size:var(--text-sm);line-height:1.5}.risk-tag{grid-column:2;color:var(--risk-color);font-family:var(--font-body);font-size:var(--text-xs)}.selection-hint,.choice-intro{margin-block:var(--space-md) 0;color:var(--color-neutral);font-size:var(--text-sm)}.voter-dots,.change-flow{display:flex;flex-wrap:wrap;gap:var(--space-xs);margin-block-start:var(--space-lg)}.voter-dots>span,.change-flow>span{display:flex;align-items:center;gap:var(--space-xs);min-height:2.25rem;padding-inline:var(--space-sm);border:var(--rule-hair) solid var(--color-rule-strong);border-radius:var(--radius-pill);color:var(--color-ink-soft);background:var(--color-paper-3);font-size:var(--text-xs)}.voter-dots i{color:var(--color-success);font-size:var(--text-xs);font-style:normal;font-weight:800}.voter-dots .chairman,.change-flow>span{border-color:color-mix(in oklch,var(--color-accent) 55%,var(--color-rule))}.voter-dots .chairman,.voter-dots em{color:var(--color-accent-soft)}.voter-dots em{font-style:normal;font-weight:800}.chairman-badge{width:max-content;min-height:2.75rem;padding:var(--space-sm) var(--space-md);border:var(--rule-hair) solid var(--color-accent);border-radius:var(--radius-pill);color:var(--color-accent-soft);background:var(--color-paper-3);font-size:var(--text-sm)}.vote-bars{display:grid;gap:var(--space-md)}.vote-row{display:grid;grid-template-columns:minmax(5.5rem,.8fr) minmax(0,2fr) 3.5rem;align-items:center;gap:var(--space-xs)}.vote-label{display:flex;align-items:center;gap:var(--space-xs);min-width:0}.vote-label strong{flex:0 0 auto;display:grid;place-items:center;width:1.75rem;height:1.75rem;border:var(--rule-hair) solid var(--color-rule-strong);border-radius:50%;font-family:var(--font-body)}.vote-label span{overflow:hidden;font-size:var(--text-sm);text-overflow:ellipsis;white-space:nowrap}.bar-track{height:var(--space-sm);border-radius:var(--radius-pill);background:var(--color-paper);overflow:hidden}.bar-track i{display:block;height:100%;border-radius:inherit;background:var(--bar-color);transform-origin:left center;animation:bar-grow var(--dur-long) var(--ease-out) both}.vote-number{display:flex;align-items:baseline;justify-content:flex-end;gap:var(--space-2xs);font-variant-numeric:tabular-nums}.vote-number strong{font-family:var(--font-body);font-size:var(--text-md)}.vote-number span,.blind-note{color:var(--color-neutral);font-size:var(--text-xs)}.blind-note{margin-block:var(--space-sm) 0;font-variant-numeric:tabular-nums}.stage-story .stage-card,.stage-blind .stage-card,.stage-branch-story .stage-card,.stage-final-choice .stage-card{padding:0;overflow:hidden}.stage-card .cinema-stage{width:100%;max-width:none;height:100%}.cinema-frame{position:relative;isolation:isolate;width:100%;height:100%;min-height:32rem;overflow:hidden;background:var(--color-paper)}.cinema-frame video{position:absolute;z-index:var(--z-base);inset:0;width:100%;height:100%;object-fit:cover}.cinema-shade{position:absolute;z-index:var(--z-raised);inset:0;pointer-events:none;background:linear-gradient(180deg,color-mix(in oklch,var(--color-paper) 8%,transparent) 35%,color-mix(in oklch,var(--color-paper) 88%,transparent))}.cinema-caption{position:absolute;z-index:var(--z-overlay);inset-inline:var(--space-xl);inset-block-end:var(--space-xl);display:grid;gap:var(--space-xs);max-width:54rem;padding:var(--space-md) var(--space-lg);border-inline-start:var(--rule-bold) solid var(--color-accent);color:var(--color-ink);background:color-mix(in oklch,var(--color-paper) 88%,transparent)}.cinema-caption span{color:var(--color-accent-soft);font-size:var(--text-xs);letter-spacing:.1em}.cinema-caption strong{font-size:var(--text-md);line-height:1.55}.cinema-status{position:absolute;z-index:var(--z-overlay);inset-inline-start:var(--space-lg);inset-block-start:var(--space-lg);display:flex;align-items:center;gap:var(--space-xs);padding:var(--space-xs) var(--space-sm);border-radius:var(--radius-pill);color:var(--color-ink-soft);background:color-mix(in oklch,var(--color-paper) 82%,transparent);font-size:var(--text-xs);letter-spacing:.08em}.cinema-status i{width:var(--space-xs);height:var(--space-xs);border-radius:50%;background:var(--color-error)}.cinema-decision{position:absolute;z-index:var(--z-overlay);inset-inline:var(--space-lg);inset-block-end:var(--space-lg);padding:var(--space-md);border-block-start:var(--rule-hair) solid var(--color-accent);color:var(--color-ink);background:color-mix(in oklch,var(--color-paper) 93%,transparent)}.cinema-decision-heading{display:flex;align-items:end;justify-content:space-between;gap:var(--space-lg);margin-block-end:var(--space-sm)}.cinema-decision-heading span{color:var(--color-accent-soft);font-size:var(--text-xs);letter-spacing:.08em}.cinema-decision-heading h2{margin:var(--space-2xs) 0 0;font-size:var(--text-xl)}.cinema-decision-heading>strong{flex:0 0 auto;color:var(--color-accent-soft);font-size:var(--text-sm)}.primary-decision .option-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:var(--space-xs)}.primary-decision .option-card{display:grid;grid-template-columns:auto minmax(0,1fr);min-height:7rem;padding:var(--space-sm);background:var(--color-paper-3)}.primary-decision .option-card h3{font-size:var(--text-base)}.primary-decision .option-card p{margin-block-end:0;font-size:var(--text-xs)}.primary-decision .risk-tag{grid-column:2;margin-block-start:0}.secondary-decision .secondary-grid{gap:var(--space-sm)}.secondary-decision .secondary-card{min-height:8.5rem;padding:var(--space-md);background:var(--color-paper-3)}.secondary-decision .secondary-card h3{font-size:var(--text-md)}.secondary-decision .secondary-card p{margin-block-end:var(--space-sm);font-size:var(--text-sm)}.branch-stage{max-width:60rem}.consequence-strip{display:grid;gap:var(--space-xs);padding:var(--space-md) var(--space-lg);border-inline-start:var(--rule-bold) solid var(--color-accent);color:var(--color-ink);background:var(--color-paper-3)}.consequence-strip span{color:var(--color-accent-soft);font-size:var(--text-xs);letter-spacing:.1em}.consequence-strip strong{font-size:var(--text-base);line-height:1.65}.choice-intro{margin-block:calc(var(--space-md) * -1) var(--space-lg)}.secondary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--space-lg)}.secondary-card{display:grid;grid-template-columns:auto minmax(0,1fr);gap:var(--space-md);min-height:13rem;padding:var(--space-lg);border:var(--rule-hair) solid var(--color-rule-strong);border-radius:var(--radius-md);color:var(--color-ink);background:var(--color-paper-3);cursor:pointer;text-align:start;transition:border-color var(--dur-short) var(--ease-out),background-color var(--dur-short) var(--ease-out),transform var(--dur-micro) var(--ease-out)}.secondary-card.selected{border-width:var(--rule-bold);border-color:var(--color-accent);background:color-mix(in oklch,var(--color-accent) 12%,var(--color-paper-3));transform:translateY(calc(var(--space-2xs) * -1))}.choice-number{display:grid;place-items:center;width:2.75rem;height:2.75rem;border:var(--rule-hair) solid var(--color-accent);border-radius:50%;color:var(--color-accent-soft);font-weight:800}.secondary-card h3{margin-block-end:var(--space-sm);font-size:var(--text-lg)}.secondary-card p{margin-block-end:var(--space-lg);color:var(--color-ink-soft);line-height:1.6}.secondary-card strong{color:var(--color-accent-soft);font-size:var(--text-sm)}.locked-stage,.ending-stage{text-align:center}.result-seal{width:max-content;margin:0 auto var(--space-md);padding:var(--space-xs) var(--space-sm);border:var(--rule-hair) solid var(--color-accent);border-radius:var(--radius-pill);color:var(--color-accent-soft);font-family:var(--font-body);font-size:var(--text-xs)}.winner-key,.ending-icon{display:grid;place-items:center;margin-inline:auto;border:var(--rule-hair) solid var(--color-accent);border-radius:50%;color:var(--color-accent-soft);background:var(--color-paper-3);font-family:var(--font-body);font-weight:800}.winner-key{width:5rem;height:5rem;margin-block-end:var(--space-md);font-size:var(--text-3xl)}.ending-icon{width:2.75rem;height:2.75rem;margin-block-end:var(--space-lg);font-size:var(--text-xs)}.locked-stage>p,.ending-stage>p{max-width:65ch;margin:0 auto var(--space-lg);color:var(--color-ink-soft);font-size:var(--text-base);line-height:1.7}.impact-card,.discussion-card{margin-inline:auto;text-align:start}.ending-stage h2{max-width:58rem;margin-inline:auto}.ending-safe .ending-icon{border-color:var(--color-success);color:var(--color-success)}.ending-danger .ending-icon{border-color:var(--color-error);color:var(--color-error)}.ending-route{width:max-content;max-width:100%;margin:var(--space-md) auto 0;padding:var(--space-xs) 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#e7c368;border-radius:50%;color:#edca70;font-size:clamp(3.1rem,6vw,5.6rem);font-weight:900}.story-video-placeholder>div:last-child{max-width:55rem}.story-video-placeholder span{color:#7ed0ef;font-size:.67rem;font-weight:800;letter-spacing:.15em}.story-video-placeholder h1{margin:.7rem 0 .8rem;color:#f3f7f9;font-size:clamp(2.2rem,4.2vw,4.6rem);line-height:1.02}.story-video-placeholder p{max-width:48rem;color:#deeaf0b8;font-size:1rem;line-height:1.7}.material-notice{display:flex;align-items:center;gap:.5rem;width:max-content;max-width:100%;margin-bottom:.9rem;color:#dee9ef7a;font-size:.62rem}.material-notice i{width:.42rem;height:.42rem;border-radius:50%;background:#e6c263}.demo-actions{display:flex;gap:.7rem}.demo-actions button,.demo-footer button{min-height:2.65rem;padding:0 1.2rem;border-radius:999px;cursor:pointer;font-weight:800}.demo-action-primary{color:#08121a;background:#e6c263}.demo-action-quiet,.demo-footer button{border:1px solid rgba(218,233,241,.2);color:#e8f0f5b8;background:#08131db8}.demo-footer{display:flex;align-items:center;justify-content:space-between;min-height:2.8rem}.demo-footer>span{display:flex;align-items:center;gap:.55rem;color:#dce8ef7a;font-size:.65rem;letter-spacing:.08em}.demo-actions button:hover,.demo-footer button:hover{transform:translateY(-2px)}@media(prefers-reduced-motion:reduce){.route-choice-grid button,.demo-actions button,.demo-footer button{transition-duration:.15s}}