.bs-bd{--bd-bg:#0f1512;--bd-panel:#182019;--bd-panel-2:#1f2924;--bd-line:#2c3a32;--bd-text:#f2f5f3;--bd-muted:#a3b1a8;--bd-green:#22c55e;--bd-green-2:#4ade80;--bd-amber:#f2a93b;box-sizing:border-box;background:var(--bd-bg);height:calc(100vh - 64px);color:var(--bd-text);gap:20px;padding:16px 20px 18px;display:flex;position:relative;overflow:hidden}.bs-bd kbd{background:var(--bd-line);color:#e8eeea;min-width:20px;height:20px;font:700 11px/1 var(--bs-ui,system-ui, sans-serif);border-radius:5px;justify-content:center;align-items:center;padding:0 5px;display:inline-flex}.bs-bd-main{flex-direction:column;flex:auto;gap:10px;min-width:0;min-height:0;display:flex}.bs-bd-crumbs{align-items:center;gap:8px;min-height:30px;font-size:14px;font-weight:700;display:flex}.bs-bd-crumb{color:var(--bd-green-2);text-decoration:none}.bs-bd-crumb:hover{text-decoration:underline}.bs-bd-crumb--on{color:var(--bd-text)}.bs-bd-crumb-sep{color:var(--bd-muted)}.bs-bd-spacer{flex:auto}.bs-bd-episodes{scrollbar-width:none;align-items:center;gap:6px;max-width:60%;display:flex;overflow-x:auto}.bs-bd-episodes::-webkit-scrollbar{display:none}.bs-bd-ep{background:var(--bd-panel-2);border:1px solid var(--bd-line);color:#c9d3cd;border-radius:999px;flex:none;justify-content:center;align-items:center;min-width:30px;height:28px;padding:0 8px;font-size:12px;font-weight:800;text-decoration:none;display:inline-flex}.bs-bd-ep--done{border-color:#2f6b45}.bs-bd-ep--on{background:var(--bd-green);border-color:var(--bd-green);color:#0b1a10}.bs-bd-player{background:#000;border-radius:16px;flex:none;justify-content:center;align-items:center;height:min(52vh,56%);display:flex;position:relative;overflow:hidden}.bs-bd-player-box{width:100%;height:100%;position:relative}.bs-bd-player--portrait .bs-bd-player-box{aspect-ratio:9/16;width:auto;max-width:100%}.bs-bd-player .bs-bichleg-player-mount{position:absolute;inset:0}.bs-bd-player .bs-bichleg-player-mount iframe{width:100%!important;height:100%!important}.bs-bd-cover{z-index:2;cursor:pointer;background:0 0;border:0;justify-content:center;align-items:center;display:flex;position:absolute;inset:0}.bs-bd-cover-play{color:#fff;background:#0000008c;border-radius:999px;justify-content:center;align-items:center;width:84px;height:84px;display:flex}.bs-bd-cover-play svg{width:40px;height:40px}.bs-bd-unmute,.bs-bd-paused,.bs-bd-repeat-badge{z-index:3;font:800 13px/1 var(--bs-ui,system-ui, sans-serif);cursor:pointer;border:0;border-radius:999px;position:absolute}.bs-bd-unmute{background:var(--bd-amber);color:#3a2504;padding:10px 14px;top:14px;left:14px}.bs-bd-paused{background:var(--bd-green);color:#0b1a10;align-items:center;gap:8px;padding:10px 14px;display:inline-flex;top:14px;right:14px}.bs-bd-paused kbd{color:#0b1a10;background:#00000040}.bs-bd-repeat-badge{color:var(--bd-green-2);cursor:default;background:#0000008c;padding:8px 12px;top:14px;left:50%;transform:translate(-50%)}.bs-bd-resume{z-index:3;color:#fff;min-height:40px;font:700 13px/1 var(--bs-ui,system-ui, sans-serif);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#000000b8;border-radius:999px;align-items:center;gap:8px;padding:4px 4px 4px 12px;display:inline-flex;position:absolute;bottom:14px;left:14px}.bs-bd-resume button{background:var(--bd-green);color:#0b1a10;min-height:32px;font:800 12px/1 var(--bs-ui,system-ui, sans-serif);cursor:pointer;border:0;border-radius:999px;padding:0 12px}.bs-bd-resume button:last-child{color:#fff;background:#ffffff24;width:32px;padding:0}.bs-bd-caption{z-index:3;text-align:center;pointer-events:none;background:linear-gradient(#0000,#000000b8);padding:26px 24px 14px;position:absolute;bottom:0;left:0;right:0}.bs-bd-caption-zh{text-shadow:0 1px 4px #000000b3;margin:0;font-size:28px;font-weight:700;line-height:1.3}.bs-bd-caption-mn{color:#dfe6e2;text-shadow:0 1px 3px #000000b3;margin:2px 0 0;font-size:14px}.bs-bd-transport{flex-wrap:wrap;flex:none;align-items:center;gap:8px;min-height:44px;display:flex}.bs-bd-time{color:var(--bd-muted);min-width:34px;font-size:12px;font-weight:700}.bs-bd-bar{cursor:pointer;background:0 0;border:0;flex:120px;min-width:120px;height:20px;padding:0;position:relative}.bs-bd-bar:before{content:"";background:var(--bd-panel-2);border-radius:99px;height:6px;position:absolute;top:7px;left:0;right:0}.bs-bd-bar-fill{background:var(--bd-green);pointer-events:none;border-radius:99px;height:6px;position:absolute;top:7px;left:0}.bs-bd-btn{border:1px solid var(--bd-line);background:var(--bd-panel-2);min-width:40px;height:40px;color:var(--bd-text);font:700 13px/1 var(--bs-ui,system-ui, sans-serif);cursor:pointer;white-space:nowrap;border-radius:12px;justify-content:center;align-items:center;gap:6px;padding:0 10px;display:inline-flex}.bs-bd-btn:hover{border-color:#3e5046}.bs-bd-btn--play{background:var(--bd-green);border-color:var(--bd-green);color:#0b1a10;width:44px;height:44px}.bs-bd-btn--on{border-color:var(--bd-green);color:#86efac;background:#163a25}.bs-bd-transcript{background:var(--bd-panel);scrollbar-width:thin;scrollbar-color:var(--bd-line) transparent;border-radius:16px;flex-direction:column;flex:auto;gap:2px;min-height:120px;padding:8px 10px;display:flex;overflow-y:auto}.bs-bd-transcript-head{justify-content:space-between;align-items:center;padding:4px 6px 6px;display:flex}.bs-bd-sec{letter-spacing:.08em;text-transform:uppercase;color:var(--bd-muted);font-size:12px;font-weight:800}.bs-bd-hint{color:var(--bd-muted);font-size:12px}.bs-bd-line{border-radius:10px;align-items:center;gap:4px;display:flex}.bs-bd-line--on{background:var(--bd-panel-2);outline:2px solid var(--bd-green)}.bs-bd-line-main{min-width:0;color:inherit;text-align:left;cursor:pointer;background:0 0;border:0;border-radius:10px;flex:auto;align-items:flex-start;gap:12px;padding:8px 10px;display:flex}.bs-bd-line-main:hover{background:#ffffff0a}.bs-bd-line-time{width:38px;color:var(--bd-muted);flex:none;padding-top:3px;font-size:12px;font-weight:800}.bs-bd-line--on .bs-bd-line-time{color:var(--bd-green-2)}.bs-bd-line-text{flex-direction:column;gap:1px;min-width:0;display:flex}.bs-bd-line-speaker{color:var(--bd-green-2);font-size:11px;font-weight:800}.bs-bd-line-zh{font-size:17px;font-weight:600;line-height:1.35}.bs-bd-line--on .bs-bd-line-zh{color:var(--bd-green-2)}.bs-bd-line-py{color:var(--bd-muted);font-size:12px}.bs-bd-line-mn{color:#d5ddd8;font-size:13px}.bs-bd-blur{filter:blur(6px);-webkit-user-select:none;user-select:none}.bs-bd-line-btn{color:#c9d3cd;cursor:pointer;opacity:.55;width:32px;height:32px;font:700 14px/1 var(--bs-ui,system-ui, sans-serif);background:0 0;border:0;border-radius:8px;flex:none;justify-content:center;align-items:center;margin-right:6px;display:inline-flex}.bs-bd-line:hover .bs-bd-line-btn,.bs-bd-line--on .bs-bd-line-btn,.bs-bd-wlist li:hover .bs-bd-line-btn{opacity:1}.bs-bd-line-btn:hover{background:var(--bd-line)}.bs-bd-line-btn--on{color:var(--bd-green-2);opacity:1}.bs-bd-side{scrollbar-width:thin;scrollbar-color:var(--bd-line) transparent;flex-direction:column;flex:none;gap:12px;width:440px;min-height:0;padding-right:2px;display:flex;overflow-y:auto}.bs-bd-side-head{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.bs-bd-title{margin:0;font-size:22px;font-weight:800;line-height:1.2}.bs-bd-sub{color:var(--bd-muted);margin:2px 0 0;font-size:13px}.bs-bd-seg{background:var(--bd-panel-2);border:1px solid var(--bd-line);border-radius:999px;flex:none;padding:2px;display:inline-flex}.bs-bd-seg button{height:30px;color:var(--bd-muted);font:800 12px/1 var(--bs-ui,system-ui, sans-serif);cursor:pointer;background:0 0;border:0;border-radius:999px;padding:0 12px}.bs-bd-seg button.bs-on{background:var(--bd-green);color:#0b1a10}.bs-bd-card{background:var(--bd-panel);border-radius:16px;flex-direction:column;gap:8px;padding:14px 16px;display:flex}.bs-bd-card--word{background:#163a25;border:1px solid #2f6b45}.bs-bd-card-top{justify-content:space-between;align-items:center;gap:8px;display:flex}.bs-bd-speaker{color:var(--bd-green-2);font-size:13px;font-weight:800}.bs-bd-words{flex-wrap:wrap;align-items:flex-end;gap:2px 0;display:flex}.bs-bd-word{color:var(--bd-text);cursor:pointer;font:inherit;background:0 0;border:0;border-radius:8px;flex-direction:column;align-items:center;gap:1px;padding:3px 5px;display:inline-flex}.bs-bd-word small{color:var(--bd-muted);font-size:12px;font-family:var(--bs-ui,system-ui, sans-serif);min-height:14px}.bs-bd-word b{border-bottom:3px solid #0000;padding-bottom:1px;font-size:22px;font-weight:700;line-height:1.15}.bs-bd-words--big .bs-bd-word b{font-size:32px}.bs-bd-word--key b{border-bottom-color:var(--bd-amber)}.bs-bd-word--saved b{border-bottom-color:var(--bd-green)}.bs-bd-word:hover,.bs-bd-word--on{background:var(--bd-panel-2)}.bs-bd-word--on b{color:var(--bd-green-2)}.bs-bd-mn{margin:2px 0 0;font-size:15px;line-height:1.5}.bs-bd-listen{color:var(--bd-muted);justify-content:space-between;align-items:center;gap:12px;padding:10px 0;font-size:14px;display:flex}.bs-bd-listen p{margin:0}.bs-bd-tools{flex-wrap:wrap;align-items:center;gap:8px;margin-top:4px;display:flex}.bs-bd-chip{border:1px solid var(--bd-line);background:var(--bd-panel-2);color:#e8eeea;height:34px;font:700 13px/1 var(--bs-ui,system-ui, sans-serif);cursor:pointer;border-radius:999px;align-items:center;gap:6px;padding:0 12px;text-decoration:none;display:inline-flex}.bs-bd-chip:hover{border-color:#3e5046}.bs-bd-chip--on{border-color:var(--bd-green);color:#86efac;background:#163a25}.bs-bd-chip--rec{color:#fecaca;background:#5b1d1d;border-color:#ef4444}.bs-bd-chip--slang{color:#f8d48b;cursor:default;background:#3a2a10;border-color:#7a5a1a}.bs-bd-primary{background:var(--bd-green);color:#0b1a10;height:40px;font:800 14px/1 var(--bs-ui,system-ui, sans-serif);cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;padding:0 16px;display:inline-flex}.bs-bd-primary:disabled{opacity:.7;cursor:default}.bs-bd-primary--done{color:#dcfce7;background:#2f6b45}.bs-bd-word-head{align-items:baseline;gap:12px;display:flex}.bs-bd-word-zh{font-size:36px;font-weight:700;line-height:1}.bs-bd-word-py{color:#bfe8cc;font-size:15px}.bs-bd-word-mn{margin:0;font-size:17px;font-weight:800}.bs-bd-wlist{flex-direction:column;gap:2px;margin:0;padding:0;list-style:none;display:flex}.bs-bd-wlist li{align-items:center;display:flex}.bs-bd-wrow{min-width:0;color:inherit;text-align:left;cursor:pointer;font:inherit;background:0 0;border:0;border-radius:10px;flex:auto;grid-template-columns:10px 64px 96px minmax(0,1fr);align-items:center;gap:10px;padding:6px 8px;display:grid}.bs-bd-wrow:hover{background:var(--bd-panel-2)}.bs-bd-dot{background:var(--bd-line);border-radius:99px;width:8px;height:8px}.bs-bd-dot--key{background:var(--bd-amber)}.bs-bd-wrow-zh{font-size:18px;font-weight:700}.bs-bd-wrow-py{color:var(--bd-muted);font-size:12px}.bs-bd-wrow-mn{text-overflow:ellipsis;white-space:nowrap;font-size:14px;overflow:hidden}.bs-bd-slang{color:#f8e2b0;background:#2a2010;border-radius:12px;margin-top:4px;padding:10px 12px;font-size:13px;line-height:1.5}.bs-bd-keychips{flex-wrap:wrap;gap:6px;display:flex}.bs-bd-keychip{border:1px solid var(--bd-line);background:var(--bd-panel-2);height:32px;color:var(--bd-text);font:inherit;cursor:pointer;border-radius:999px;align-items:baseline;gap:6px;padding:0 10px;display:inline-flex}.bs-bd-keychip b{font-size:15px;font-weight:700}.bs-bd-keychip span{color:var(--bd-muted);font-size:12px;font-family:var(--bs-ui,system-ui, sans-serif)}.bs-bd-keychip--saved{border-color:var(--bd-green)}.bs-bd-keys-help{color:var(--bd-muted);margin:0;padding:4px 2px 8px;font-size:12px;line-height:1.9}.bs-bd-toast{z-index:9;color:#0f1512;font:800 13px/1 var(--bs-ui,system-ui, sans-serif);background:#e8eeea;border-radius:999px;padding:10px 16px;position:absolute;bottom:24px;left:50%;transform:translate(-50%);box-shadow:0 8px 24px #00000059}@media (min-width:1500px){.bs-bd-side{width:500px}}.bs-bd-word--known b{border-bottom-color:var(--bd-green)}.bs-bd-word--learning b{border-bottom-color:#60a5fa}.bs-bd-word--new.bs-bd-word--key b{border-bottom-color:var(--bd-amber)}.bs-bd-dot--known{background:var(--bd-green)}.bs-bd-dot--learning{background:#60a5fa}.bs-bd-dot--new{background:var(--bd-amber)}.bs-bd-legend{align-items:center;gap:5px;display:inline-flex}.bs-bd-legend .bs-bd-dot{margin-left:6px;display:inline-block}.bs-bd-quiz{border:1px solid #2f6b45}.bs-bd-quiz-q{align-items:baseline;gap:12px;padding:6px 0 2px;display:flex}.bs-bd-quiz-q b{font-size:34px;font-weight:700;line-height:1.1}.bs-bd-quiz-q span{color:var(--bd-muted);font-size:14px}.bs-bd-quiz-opts{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;display:grid}.bs-bd-quiz-opt{border:1px solid var(--bd-line);background:var(--bd-panel-2);min-height:48px;color:var(--bd-text);font:700 14px/1.3 var(--bs-ui,system-ui, sans-serif);text-align:left;cursor:pointer;border-radius:12px;align-items:center;gap:8px;padding:8px 10px;display:flex}.bs-bd-quiz-opt:disabled{cursor:default}.bs-bd-quiz-opt--ok{border-color:var(--bd-green);color:#86efac;background:#163a25}.bs-bd-quiz-opt--bad{color:#fecaca;background:#4a1c1c;border-color:#ef4444}.bs-bd-quiz-result{margin:4px 0;font-size:26px;font-weight:900}.bs-bd-sent-link{color:var(--bd-green-2);background:#1fb85a24;border-radius:999px;align-items:center;gap:6px;margin:4px 16px 14px;padding:8px 12px;font-size:12px;font-weight:800;text-decoration:none;display:inline-flex}.bs-bd-sent-link:hover{background:#1fb85a3d}