:root{--color-bg: #14110f;--color-bg-elevated: #1f1a17;--color-bg-panel: #2a221d;--color-text: #f2e8dc;--color-text-muted: #b9a995;--color-accent: #c08a54;--color-accent-soft: rgba(192, 138, 84, .18);--color-border: rgba(242, 232, 220, .12);--color-danger: #b85c4b;--color-success: #6f8f71;--color-warning: #c49a3d;--font-serif: "Songti SC", "Noto Serif SC", "SimSun", serif;--font-sans: "PingFang SC", "Microsoft YaHei", sans-serif;--space-xs: .5rem;--space-sm: .75rem;--space-md: 1rem;--space-lg: 1.5rem;--space-xl: 2rem;--radius-md: 10px;--shadow-none: none}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{font-family:var(--font-sans);background:var(--color-bg);color:var(--color-text)}button,input,select,textarea{font:inherit}a{color:inherit}.app-shell{min-height:100vh;display:flex;flex-direction:column}.page{width:min(1120px,100%);margin:0 auto;padding:var(--space-lg)}.page-title{font-family:var(--font-serif);font-size:clamp(1.8rem,4vw,2.6rem);margin:0 0 var(--space-sm)}.page-subtitle{color:var(--color-text-muted);margin:0 0 var(--space-xl);line-height:1.7}.button-row{display:flex;flex-wrap:wrap;gap:var(--space-sm)}.btn{border:1px solid var(--color-border);background:var(--color-bg-panel);color:var(--color-text);padding:.75rem 1.1rem;border-radius:var(--radius-md);cursor:pointer}.btn:hover{border-color:var(--color-accent)}.btn-primary{background:var(--color-accent-soft);border-color:var(--color-accent)}.btn-ghost{background:transparent}.warning-banner{margin-bottom:var(--space-md);padding:var(--space-sm) var(--space-md);border:1px solid var(--color-warning);border-radius:var(--radius-md);color:var(--color-warning);background:#c49a3d14}@media(max-width:768px){.page{padding:var(--space-md)}}.theme-jiaqing-cloth{--stage-bg: linear-gradient(180deg, #3a3228 0%, #1a1612 100%);--stage-accent: #a67c52}.theme-late-han{--stage-bg: linear-gradient(180deg, #2b2118 0%, #17120f 100%);--stage-accent: #8b5a2b}.theme-northern-song{--stage-bg: linear-gradient(180deg, #24364a 0%, #121820 100%);--stage-accent: #5f7ea0}.theme-early-republic{--stage-bg: linear-gradient(180deg, #3a2f35 0%, #17131a 100%);--stage-accent: #9a6b52}.theme-mid-tang{--stage-bg: linear-gradient(180deg, #3d2e1f 0%, #1a1410 100%);--stage-accent: #c49a3c}.theme-early-ming{--stage-bg: linear-gradient(180deg, #2a3a2e 0%, #121a14 100%);--stage-accent: #6b8f71}.theme-late-qing{--stage-bg: linear-gradient(180deg, #2e3540 0%, #141820 100%);--stage-accent: #7a6b5a}.play-layout{min-height:100vh;display:grid;grid-template-rows:auto 1fr auto}.crossing-page{min-height:100vh}.crossing-stage{position:relative;min-height:100vh;display:grid;place-items:end center;padding:2rem 1.25rem 2.5rem;background:var(--stage-bg, linear-gradient(180deg, #2b2118 0%, #17120f 100%));overflow:hidden}.crossing-stage-has-image:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:var(--crossing-image);background-size:cover;background-position:center;transform:scale(1.04);filter:saturate(.85) contrast(1.05)}.crossing-veil{position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,#08060459,#080604b8 55%,#080604eb)}.crossing-panel{position:relative;z-index:1;width:min(40rem,100%);display:grid;gap:1.25rem}.crossing-eyebrow{margin:0;letter-spacing:.28em;text-transform:uppercase;font-size:.75rem;color:var(--stage-accent, var(--color-accent))}.crossing-text{min-height:10rem;cursor:pointer}.crossing-text p{margin:0 0 1rem;font-size:1.08rem;line-height:1.85;color:#f3ebe1;white-space:pre-wrap}.crossing-caret{display:inline-block;margin-left:.1rem;animation:crossing-blink 1s step-end infinite;color:var(--stage-accent, var(--color-accent))}@keyframes crossing-blink{50%{opacity:0}}.play-toolbar{display:flex;justify-content:space-between;align-items:center;gap:var(--space-sm);padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--color-border);background:var(--color-bg-elevated)}.play-main{display:grid;grid-template-columns:1fr 320px;min-height:0}.play-stage-wrap{display:flex;flex-direction:column;min-height:0}.stage{flex:1;min-height:320px;background:var(--stage-bg);border-bottom:1px solid var(--color-border);display:flex;align-items:flex-end;padding:var(--space-xl);position:relative}.stage-has-image{background-image:var(--stage-image),var(--stage-bg);background-size:cover;background-position:center}.stage:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(180deg,transparent 40%,rgba(0,0,0,.45));pointer-events:none}.stage-content{position:relative;z-index:1;max-width:720px}.stage-tag{display:inline-block;padding:.25rem .6rem;border:1px solid var(--color-border);border-radius:999px;color:var(--color-text-muted);font-size:.85rem;margin-bottom:var(--space-sm)}.stage-title{font-family:var(--font-serif);font-size:clamp(1.4rem,3vw,2rem);margin:0 0 var(--space-xs)}.dialogue-panel{padding:var(--space-lg);background:var(--color-bg-elevated)}.speaker{color:var(--color-accent);margin-bottom:var(--space-xs);font-weight:600}.dialogue-text{line-height:1.8;margin:0 0 var(--space-lg);min-height:4.5rem}.choice-list{display:grid;gap:var(--space-sm)}.choice-button{text-align:left;width:100%}.play-sidebar{border-left:1px solid var(--color-border);background:var(--color-bg-panel);overflow:auto}.sidebar-section{padding:var(--space-md);border-bottom:1px solid var(--color-border)}.sidebar-section h3{margin:0 0 var(--space-sm);font-size:1rem}.stat-grid{display:grid;gap:var(--space-sm)}.stat-row{display:grid;grid-template-columns:4rem 1fr 2.5rem;align-items:center;gap:var(--space-sm);font-size:.92rem}.stat-bar{height:8px;background:#ffffff14;border-radius:999px;overflow:hidden}.stat-bar-fill{height:100%;background:var(--color-accent)}.evidence-drawer{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;display:flex;justify-content:flex-end;z-index:20}.evidence-drawer-panel{width:min(420px,100%);height:100%;background:var(--color-bg-panel);overflow:auto;padding:var(--space-lg)}.evidence-item{border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-sm);margin-bottom:var(--space-sm)}.evidence-item strong{display:block;margin-bottom:.25rem}.evidence-meta{color:var(--color-text-muted);font-size:.85rem;margin-bottom:var(--space-xs)}.mark-row{display:flex;flex-wrap:wrap;gap:.35rem}.mark-row .btn{padding:.35rem .6rem;font-size:.85rem}.hypothesis-form{display:grid;gap:var(--space-sm)}.hypothesis-form label{display:grid;gap:.35rem;font-size:.92rem}.hypothesis-form input,.hypothesis-form textarea{background:var(--color-bg);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);padding:.55rem .7rem}.archive-grid{display:grid;gap:var(--space-md)}.archive-card{border:1px solid var(--color-border);border-radius:var(--radius-md);padding:var(--space-md);background:var(--color-bg-elevated)}.archive-card h3{margin:0 0 var(--space-xs)}.page-section-title{margin:var(--space-xl) 0 var(--space-sm);font-size:1.2rem}.level-card{display:flex;justify-content:space-between;align-items:center;gap:var(--space-md)}.level-card-info{min-width:0}.level-card-action{display:flex;align-items:center;gap:var(--space-sm);flex-shrink:0}.level-badge{font-size:.85rem;padding:.3rem .6rem;border-radius:var(--radius-md);border:1px solid var(--color-border);color:var(--color-text-muted);white-space:nowrap}.level-badge-done{color:var(--color-text);border-color:var(--color-border)}.settings-form{display:grid;gap:var(--space-md);max-width:520px}.settings-form label{display:grid;gap:.4rem}.result-grid{display:grid;gap:var(--space-md)}.result-metric{display:flex;justify-content:space-between;gap:var(--space-md);padding:var(--space-sm) 0;border-bottom:1px solid var(--color-border)}.result-score{margin:0 0 .75rem;font-size:1.05rem}.result-score strong{font-size:1.6rem;color:var(--color-accent)}@media(max-width:900px){.play-main{grid-template-columns:1fr}.play-sidebar{display:none}.play-sidebar.open-mobile{display:block;position:fixed;top:64px;right:0;bottom:0;left:0;z-index:10}.level-card{flex-direction:column;align-items:stretch}.level-card-action{justify-content:space-between}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}