:root{--paper: #f6f1e7;--paper-deep: #efe7d6;--ink: #22304a;--ink-soft: #67707f;--gold: #c9a253;--gold-deep: #a8823a;--gold-soft: #e8d9b0;--line: rgba(34, 48, 74, .16);--line-faint: rgba(34, 48, 74, .05);--serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "STSong", "SimSun", serif;--sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif}*{box-sizing:border-box}html,body,#root{min-height:100%}body{margin:0;color:var(--ink);font-family:var(--serif);background:linear-gradient(var(--line-faint) 1px,transparent 1px) 0 0 / 100% 64px,linear-gradient(90deg,var(--line-faint) 1px,transparent 1px) 0 0 / 64px 100%,var(--paper);-webkit-font-smoothing:antialiased}button{font-family:inherit}.loading,.load-error{text-align:center;color:var(--ink-soft);padding:48px 16px;font-size:15px}.load-error{color:#a4432f}.library{max-width:960px;margin:0 auto;padding:64px 20px 48px}.hero-kicker{font-family:var(--sans);font-size:11px;letter-spacing:.32em;color:var(--gold-deep);margin:0 0 10px}.hero-title{font-size:56px;line-height:1.1;margin:0 0 14px;font-weight:700;letter-spacing:.08em}.hero-slogan{color:var(--ink-soft);font-size:16px;line-height:1.9;margin:0 0 18px}.hero-stats{display:flex;align-items:center;gap:14px;font-family:var(--sans);font-size:12px;letter-spacing:.14em;color:var(--gold-deep);margin:0 0 44px}.hero-stats i{width:26px;height:1px;background:var(--gold);opacity:.6}.shelf{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:22px}.book-card{display:flex;flex-direction:column;border:1px solid var(--line);background:#fffdf7a8;text-decoration:none;color:inherit;overflow:hidden;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.book-card:hover{transform:translateY(-3px);border-color:var(--gold);box-shadow:0 14px 32px #22304a1a}.book-cover{height:118px;display:grid;place-items:center;position:relative}.book-cover.c0{background:linear-gradient(135deg,#2c3e5d,#4a6491)}.book-cover.c1{background:linear-gradient(135deg,#7a5c2e,#c9a253)}.book-cover.c2{background:linear-gradient(135deg,#3e5d4a,#71917b)}.cover-emoji{font-size:46px;line-height:1;filter:drop-shadow(0 6px 10px rgba(0,0,0,.25))}.cover-progress{position:absolute;top:10px;right:10px;font-family:var(--sans);font-size:10px;letter-spacing:.08em;color:#fff;background:#00000047;border:1px solid rgba(255,255,255,.25);padding:2px 8px;border-radius:999px}.book-body{padding:16px 20px 18px;display:flex;flex-direction:column;flex:1}.book-title{margin:0 0 3px;font-size:20px}.book-author{margin:0 0 10px;color:var(--ink-soft);font-size:12.5px;font-family:var(--sans)}.book-intro{margin:0 0 14px;color:var(--ink-soft);font-size:13px;line-height:1.75;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.book-foot{margin-top:auto;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.chip{font-family:var(--sans);font-size:11px;padding:3px 9px;border-radius:999px;border:1px solid var(--line);color:var(--ink-soft)}.chip-gold{border-color:var(--gold);color:var(--gold-deep);background:#c9a2531a}.chip-ok{border-color:#6c8a5a;color:#55703f}.chip-wip{border-color:var(--gold);color:var(--gold-deep)}.start-chip{margin-left:auto;font-size:13px;color:var(--gold-deep)}.resume-chip{margin-left:auto;font-family:var(--sans);font-size:12px;color:#fff;background:var(--gold);border-radius:999px;padding:5px 12px}.site-foot{margin-top:56px;text-align:center;color:var(--ink-soft);font-size:12px;font-family:var(--sans);opacity:.75}.player{max-width:980px;margin:0 auto;padding:14px 16px 30px;display:flex;flex-direction:column;min-height:100vh}.p-empty{justify-content:center;align-items:center;display:flex;flex-direction:column;gap:16px}.p-globalbar{height:3px;background:#22304a14;border-radius:999px;overflow:hidden;margin-bottom:10px}.p-globalbar>div{height:100%;background:linear-gradient(90deg,var(--gold),var(--gold-deep));border-radius:999px;transition:width .25s linear}.p-topbar{display:flex;align-items:center;gap:14px;padding:6px 2px 14px}.p-back{font-family:var(--sans);font-size:13px;color:var(--ink-soft);text-decoration:none;white-space:nowrap}.p-back:hover{color:var(--ink)}.p-booktitle{flex:1;text-align:center;font-size:15px;letter-spacing:.12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.p-counter{font-family:var(--sans);font-size:12px;color:var(--gold-deep);letter-spacing:.18em;white-space:nowrap}.p-main{flex:1;display:flex;flex-direction:column;gap:14px}.stage{position:relative;height:clamp(400px,54vh,540px);border:1px solid var(--line);background:linear-gradient(var(--line-faint) 1px,transparent 1px) 0 0 / 100% 56px,linear-gradient(90deg,var(--line-faint) 1px,transparent 1px) 0 0 / 56px 100%,#fcf8eeb8;animation:cardIn .5s cubic-bezier(.2,.7,.3,1) both}@keyframes cardIn{0%{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}.tick{position:absolute;width:12px;height:12px;border:0 solid var(--gold);z-index:1}.tick.tl{top:-1px;left:-1px;border-top-width:2px;border-left-width:2px}.tick.tr{top:-1px;right:-1px;border-top-width:2px;border-right-width:2px}.tick.bl{bottom:-1px;left:-1px;border-bottom-width:2px;border-left-width:2px}.tick.br{bottom:-1px;right:-1px;border-bottom-width:2px;border-right-width:2px}.stage-inner{height:100%;display:flex;flex-direction:column;gap:12px;padding:24px 28px 20px;overflow:hidden}.card-head{flex:none}.card-title{margin:0 0 6px;font-size:20px;letter-spacing:.02em}.diamond{color:var(--gold-deep);margin-right:10px;font-size:14px;vertical-align:2px}.card-claim{margin:0;color:var(--ink-soft);font-size:13px;font-family:var(--sans)}.card-claim:before{content:"▷ ";color:var(--gold-deep)}.card-body{flex:1 1 auto;min-height:0;display:grid;grid-template-columns:minmax(200px,1fr) minmax(280px,1.5fr);gap:22px;align-items:center;overflow:hidden}.card-body.full{grid-template-columns:1fr;align-items:start}.card-body.full .visual{order:-1;padding:8px 0 2px}.card-body.full .points{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}.points{display:grid;gap:12px;align-content:center;min-height:0}.points:only-child{grid-column:1 / -1;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));align-content:center}.point h3{margin:0 0 5px;font-size:14px;color:var(--ink)}.point ul{margin:0;padding:0}.point li{font-family:var(--sans);font-size:12px;color:var(--ink-soft);line-height:1.7;list-style:none;position:relative;padding-left:14px}.point li:before{content:"▸";position:absolute;left:0;color:var(--gold)}.anim-point{animation:pointIn .45s ease both}@keyframes pointIn{0%{opacity:0;transform:translate(-6px)}to{opacity:1;transform:none}}.visual{margin:0;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center}.visual svg{max-width:100%;max-height:100%;height:auto}.visual figcaption{margin-top:8px;font-family:var(--sans);font-size:11.5px;color:var(--ink-soft);letter-spacing:.1em}.v-formula{display:flex;align-items:baseline;justify-content:center;flex-wrap:wrap;gap:4px 10px;padding:14px 4px 22px}.v-term-wrap{display:inline-flex;align-items:baseline}.v-term{position:relative;font-size:clamp(26px,4.6vw,40px);font-weight:700;letter-spacing:.06em;padding:0 2px 9px;white-space:nowrap}.v-term:not(.v-outlined):after{content:"";position:absolute;left:4%;right:4%;bottom:0;height:6px;background:var(--gold-soft);box-shadow:0 2px 0 var(--gold);border-radius:1px}.v-outlined{color:transparent;-webkit-text-stroke:2px var(--ink)}.v-op,.v-eq{font-size:clamp(16px,2.8vw,22px);color:var(--ink-soft);padding:0 4px}.anim-pop{animation:popIn .5s cubic-bezier(.2,.7,.3,1) both}@keyframes popIn{0%{opacity:0;transform:translateY(8px) scale(.96)}to{opacity:1;transform:none}}.v-venn svg{width:min(100%,380px)}.venn-ring{fill:none;stroke:var(--ink);stroke-width:1.6}.venn-fill{fill:var(--gold);opacity:.5}.venn-label{font-family:var(--serif);font-size:17px;fill:var(--ink);letter-spacing:2px}.v-grid svg{width:min(100%,300px)}.grid-cell{fill:none;stroke:var(--ink);stroke-width:1.1;opacity:.85;animation:cellIn .4s ease both}@keyframes cellIn{0%{opacity:0}to{opacity:.85}}.grid-gem{fill:var(--gold);opacity:.92;animation:gemIn .7s cubic-bezier(.2,.7,.3,1) both}@keyframes gemIn{0%{opacity:0;transform:scale(.4) rotate(-14deg)}to{opacity:.92;transform:none}}.v-compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;width:100%;max-width:520px}.v-col{border:1px solid var(--line);padding:12px 14px;background:#fffdf799}.v-col-label{font-family:var(--sans);font-size:11.5px;letter-spacing:.1em;margin-bottom:8px;padding:3px 9px;display:inline-block;border-radius:999px}.v-col-old .v-col-label{background:#22304a14;color:var(--ink-soft)}.v-col-new .v-col-label{background:var(--gold);color:#fff}.v-col ul{margin:0;padding-left:15px}.v-col li{font-family:var(--sans);font-size:12px;color:var(--ink-soft);line-height:1.8}.v-quote{max-width:520px;position:relative;padding:4px 0}.v-quote-mark{font-size:54px;color:var(--gold);line-height:.4;display:block}.v-quote p{font-size:18px;line-height:1.9;margin:12px 0 0}.v-quote cite{display:block;margin-top:8px;font-style:normal;font-family:var(--sans);font-size:12px;color:var(--ink-soft)}.v-image{width:100%}.v-image img{width:100%;max-height:250px;object-fit:cover;border:1px solid var(--line);border-radius:6px;background:var(--paper-deep);animation:imgIn .6s ease both}@keyframes imgIn{0%{opacity:0;transform:scale(.985)}to{opacity:1;transform:none}}.v-image figcaption{margin-top:8px;font-family:var(--sans);font-size:11.5px;color:var(--ink-soft);letter-spacing:.1em}.card-quote{flex:none;margin:0;padding:10px 16px;border-left:3px solid var(--gold);background:#c9a25314;font-size:13.5px;line-height:1.75;color:var(--ink)}.deck{border:1px solid var(--line);background:#fffdf7d9;padding:14px 18px 12px;display:flex;flex-direction:column}.deck-top{display:flex;gap:14px;min-height:0}.avatars{display:flex;flex-direction:column;gap:10px;padding-top:8px;flex:none}.avatar{width:36px;height:36px;border-radius:50%;border:1.5px solid var(--line);display:grid;place-items:center;font-size:13px;font-weight:600;color:var(--ink-soft);background:transparent;transition:background .25s ease,border-color .25s ease,color .25s ease,transform .25s ease}.avatar.on-a{background:var(--ink);border-color:var(--ink);color:var(--paper);transform:scale(1.08)}.avatar.on-b{background:var(--gold);border-color:var(--gold);color:#fff;transform:scale(1.08)}.transcript{flex:1;height:168px;overflow-y:auto;display:grid;gap:9px;align-content:start;padding-right:8px;scroll-behavior:smooth}.transcript::-webkit-scrollbar{width:4px}.transcript::-webkit-scrollbar-thumb{background:#22304a2e;border-radius:99px}.tr-row{display:flex;gap:10px;align-items:baseline;cursor:pointer;border-radius:8px;padding:3px 8px;transition:opacity .3s ease,background .2s ease}.tr-row:hover{background:#22304a0b}.tr-row.past{opacity:.38}.tr-row.next{opacity:.2}.tr-row.active{opacity:1;background:#c9a25317}.tr-row.active p{animation:lineIn .35s ease both;font-weight:600}@keyframes lineIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:none}}.spk{flex:none;font-family:var(--sans);font-size:10.5px;padding:3px 8px;border-radius:999px;white-space:nowrap}.spk em{font-style:normal;opacity:.66;margin-left:4px;font-size:9.5px}.spk-a{background:#22304ae6;color:var(--paper)}.spk-b{background:var(--gold);color:#fff}.tr-row p{margin:0;font-size:12.5px;line-height:1.7;color:var(--ink);transition:font-size .2s ease}.tr-row.active p{font-size:14.5px}.controls{display:flex;align-items:center;gap:10px;margin-top:12px;padding-top:12px;border-top:1px dashed var(--line);flex-wrap:wrap}.ctl{width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:border-color .15s ease,background .15s ease;flex:none}.ctl svg{width:15px;height:15px;fill:currentColor}.ctl:hover:not(:disabled){border-color:var(--gold);color:var(--gold-deep)}.ctl:disabled{opacity:.3;cursor:default}.ctl-play{width:48px;height:48px;background:var(--gold);border-color:var(--gold);color:#fff}.ctl-play svg{width:19px;height:19px}.ctl-play:hover:not(:disabled){background:var(--gold-deep);border-color:var(--gold-deep);color:#fff}.segments{flex:1 1 140px;display:flex;gap:5px;min-width:110px}.seg{position:relative;flex:1;height:6px;border:none;border-radius:999px;background:#22304a1f;cursor:pointer;padding:0;overflow:hidden;transition:background .2s ease}.seg:hover{background:#22304a38}.seg.done{background:var(--gold)}.seg.current{background:#c9a25340}.seg-fill{position:absolute;top:0;bottom:0;left:0;background:var(--gold);border-radius:999px;transition:width .2s linear}.ctl-text{height:32px;padding:0 13px;border-radius:999px;border:1px solid var(--line);background:transparent;font-family:var(--sans);font-size:12px;color:var(--ink-soft);cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:border-color .15s ease,color .15s ease,background .15s ease;flex:none}.ctl-text:hover{border-color:var(--gold);color:var(--gold-deep)}.ctl-text.on{border-color:var(--gold);color:var(--gold-deep);background:#c9a2531a}.p-hints{display:flex;justify-content:center;flex-wrap:wrap;gap:6px 18px;margin:9px 0 0;font-family:var(--sans);font-size:11px;color:var(--ink-soft);opacity:.85}.p-hints kbd{border:1px solid var(--line);border-radius:4px;padding:0 5px;font-size:10px;font-family:var(--sans);background:#fffdf7cc;margin:0 1px}.admin{max-width:760px;margin:0 auto;padding:40px 20px 60px}.admin-gate{margin:80px auto 0;max-width:380px;border:1px solid var(--line);background:#fffdf7cc;padding:32px 28px;display:grid;gap:14px;text-align:center}.admin-gate h1{margin:0;font-size:22px}.admin-gate p{margin:0;font-family:var(--sans);font-size:13px;color:var(--ink-soft)}.admin-gate input,.admin-form input,.admin-form textarea{width:100%;border:1px solid var(--line);background:#fffdf7e6;padding:10px 12px;font-family:var(--sans);font-size:13px;color:var(--ink);outline:none}.admin-gate input:focus,.admin-form input:focus,.admin-form textarea:focus{border-color:var(--gold)}.admin-gate button{justify-self:center}.admin-top{display:flex;align-items:center;gap:14px;margin-bottom:24px}.admin-top h1{flex:1;text-align:center;font-size:20px;margin:0}.admin-msg{font-family:var(--sans);font-size:13px;color:var(--gold-deep);border:1px dashed var(--gold);background:#c9a25314;padding:10px 14px;margin:0 0 16px}.admin-sec{border:1px solid var(--line);background:#fffdf7cc;padding:16px 18px;margin-bottom:18px}.admin-sec summary{cursor:pointer;font-family:var(--sans);font-size:14px;font-weight:600;color:var(--ink)}.admin-sec[open] summary{margin-bottom:14px}.admin-form{display:grid;gap:10px}.admin-row{display:flex;gap:10px}.admin-go{justify-self:end;background:var(--gold);border-color:var(--gold);color:#fff;padding:0 18px;height:36px}.admin-go:hover{background:var(--gold-deep);color:#fff}.admin-track h3{margin:0 0 10px;font-size:14px}.admin-track ul{margin:0;padding:0;list-style:none;display:grid;gap:6px}.admin-track li{font-family:var(--sans);font-size:12.5px;color:var(--ink-soft)}.admin-track code{color:var(--ink);margin-right:8px}.st{display:inline-block;padding:1px 8px;border-radius:999px;font-size:10.5px;margin-right:6px}.st-done{background:#6c8a5a26;color:#55703f}.st-generating,.st-pending{background:#c9a25326;color:var(--gold-deep)}.st-failed,.st-error{background:#a4432f1f;color:#a4432f}.admin-note{font-family:var(--sans);font-size:11px;color:var(--ink-soft);opacity:.8}@media (max-width: 720px){.library{padding:44px 16px 36px}.hero-title{font-size:42px}.hero-stats{flex-wrap:wrap}.player{padding:12px 12px 24px}.stage{height:480px}.stage-inner{padding:16px 16px 12px;gap:8px}.card-title{font-size:17px}.card-body{grid-template-columns:1fr;gap:8px;align-content:start}.card-body.full .visual{padding:4px 0 0}.visual svg{max-height:148px}.v-grid svg{width:min(100%,220px)}.v-venn svg{width:min(100%,250px)}.v-image img{max-height:130px}.v-compare{gap:8px}.v-col{padding:9px 11px}.v-col li{font-size:11.5px;line-height:1.7}.v-quote p{font-size:15px}.points{gap:7px}.point li{font-size:11.5px;line-height:1.6}.card-quote{font-size:12.5px;padding:8px 12px}.deck{padding:12px 14px 10px}.deck-top{flex-direction:column-reverse;gap:8px}.avatars{flex-direction:row;padding:0}.transcript{height:148px}.tr-row.active p{font-size:13.5px}.segments{order:5;flex-basis:100%}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}
