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input{cursor:pointer;accent-color:var(--accent);margin:0}.cm-opt-sub{margin-left:26px}.cm-opt[aria-disabled=true]{opacity:.4;pointer-events:none}.cm-sep{border-top:1px solid var(--border);margin:5px 6px}#share-shot-panel[hidden]{display:none!important}#share-shot-panel{z-index:999;background:var(--bg-elevated);border:1px solid var(--border);width:268px;color:var(--text);border-radius:12px;flex-direction:column;gap:12px;padding:16px;font-size:13px;display:flex;position:fixed;top:64px;right:24px;box-shadow:0 8px 28px #0000002e}#share-shot-panel .ss-head{color:var(--text);font-size:13px;font-weight:600}#share-shot-panel .ss-check{cursor:pointer;color:var(--text-muted);align-items:center;gap:7px;display:flex}#share-shot-panel .ss-check input{cursor:pointer;accent-color:var(--accent);margin:0}#share-shot-panel .ss-field{flex-direction:column;gap:6px;display:flex}#share-shot-panel .ss-label{letter-spacing:.04em;color:var(--text-muted);font-size:11px}#share-shot-panel .ss-seg{border:1px solid var(--border);border-radius:7px;display:flex;overflow:hidden}#share-shot-panel .ss-seg button{border:0;border-right:1px solid var(--border);height:28px;color:var(--text-muted);cursor:pointer;white-space:nowrap;background:0 0;flex:1;font-family:inherit;font-size:12px}#share-shot-panel .ss-seg button:last-child{border-right:0}#share-shot-panel .ss-seg button[aria-pressed=true]{background:var(--accent);color:#fff}#share-shot-panel #ss-url{border:1px solid var(--border);background:var(--bg-secondary);height:30px;color:var(--text);border-radius:6px;padding:0 8px;font-family:inherit;font-size:12px}#share-shot-panel .ss-warn[hidden]{display:none!important}#share-shot-panel .ss-warn{color:#d69a00;margin-top:-4px;font-size:11.5px;line-height:1.55;display:block}#share-shot-panel .ss-actions{gap:8px;display:flex}#share-shot-panel .ss-actions button{border:1px solid var(--border);background:var(--bg-secondary);height:32px;color:var(--text);cursor:pointer;border-radius:16px;flex:1;font-family:inherit;font-size:12.5px;font-weight:500}#share-shot-panel .ss-actions button:hover:not(:disabled){background:var(--border)}#share-shot-panel .ss-actions button:disabled{opacity:.4;cursor:not-allowed}#share-shot-panel #ss-copy{border-color:var(--accent);color:var(--accent)}#share-shot-panel .ss-msg{min-height:16px;color:var(--text-muted);font-size:11.5px;line-height:1.5}#share-shot-panel .ss-msg[data-bad="1"]{color:#e5534b}#theme-toggle{background:var(--bg-secondary);border:1px solid var(--border);cursor:pointer;width:36px;height:36px;color:var(--text-muted);border-radius:50%;justify-content:center;align-items:center;padding:0;transition:background .2s,border-color .2s,color .2s;display:flex}#theme-toggle:hover{background:var(--border);color:var(--text)}#theme-toggle svg{display:none}[data-theme=light] #theme-toggle .icon-sun,:root:not([data-theme=light]) #theme-toggle .icon-moon{display:block}.course-intro-card{background:linear-gradient(#1b1d22 0%,#14161a 100%);border:1px solid #ffffff1a;border-radius:1.4cqw;align-items:center;gap:1.46cqw;margin-top:22px;padding:2.2cqw 2.05cqw;display:flex;overflow-x:auto;box-shadow:0 6px 20px #0003;container-type:inline-size}.course-intro-avatar{user-select:none;pointer-events:none;border-radius:50%;flex-shrink:0;width:14.75cqw;height:14.75cqw;display:block}.course-intro-lines{flex-direction:column;flex:1;justify-content:center;align-items:flex-start;gap:.98cqw;min-width:0;display:flex}.course-intro-pill{box-sizing:border-box;letter-spacing:.01em;white-space:nowrap;align-items:center;font-family:PingFang SC,Hiragino Sans GB,Microsoft YaHei,system-ui,-apple-system,sans-serif;font-weight:700;line-height:1.2;display:inline-flex;box-shadow:0 2px 6px #00000040}.course-intro-pill-course{color:#18181b;background:#fff;border-radius:.78cqw;min-height:3.61cqw;padding:.35cqw 1.65cqw;font-size:2cqw}.course-intro-by{margin-left:.55em;font-weight:600}.course-intro-pill-title{color:#fff;background:#0866ce;border-radius:.93cqw;min-height:4.78cqw;padding:.42cqw 1.75cqw;font-size:2.64cqw}.course-intro-pill-keywords{color:#18181b;background:#f5b400;border-radius:.78cqw;min-height:3.42cqw;padding:.32cqw 1.65cqw;font-size:1.95cqw}.course-intro-pill-keywords.is-empty{color:#fcd34d;box-shadow:none;background:#f5b40029;border:1px dashed #f5b4008c;font-weight:500}.video-tabs[data-astro-cid-xo72wa3m]{box-sizing:border-box;border:1px solid var(--border);border-radius:8px;margin:1.5rem 0 2rem;overflow:hidden}.video-tabs-header[data-astro-cid-xo72wa3m]{border-bottom:1px solid var(--border);background:var(--bg-secondary);display:flex}.video-tab[data-astro-cid-xo72wa3m]{border:0;border-right:1px solid var(--border);color:var(--text-muted,#6e6e6e);cursor:pointer;background:0 0;flex:1;padding:.75rem 1rem;font-family:inherit;font-size:.9375rem;font-weight:600;transition:all .25s cubic-bezier(.4,0,.2,1);position:relative}.video-tab[data-astro-cid-xo72wa3m]:last-child{border-right:0}.video-tab[data-astro-cid-xo72wa3m][data-platform=bilibili]:hover:not(.active){color:#00aeec;background:#00aeec0f}.video-tab[data-astro-cid-xo72wa3m][data-platform=bilibili].active{color:#fff;background:#00aeec}.video-tab[data-astro-cid-xo72wa3m][data-platform=youtube]:hover:not(.active){color:red;background:#ff00000f}.video-tab[data-astro-cid-xo72wa3m][data-platform=youtube].active{color:#fff;background:red}.video-tabs-frame[data-astro-cid-xo72wa3m]{aspect-ratio:16/9;background:#111;line-height:0;position:relative;overflow:hidden}.video-placeholder[data-astro-cid-xo72wa3m]{z-index:3;opacity:0;visibility:hidden;pointer-events:none;color:#fff;flex-direction:column;justify-content:center;align-items:center;font-family:system-ui,-apple-system,sans-serif;transition:opacity .3s,background .4s;display:flex;position:absolute;inset:0}.bilibili-placeholder[data-astro-cid-xo72wa3m]{background:linear-gradient(135deg,#00aeec,#007bb0)}.youtube-placeholder[data-astro-cid-xo72wa3m]{background:linear-gradient(135deg,red,#b30000)}.video-tabs-frame[data-astro-cid-xo72wa3m].bilibili-loading .bilibili-placeholder[data-astro-cid-xo72wa3m],.video-tabs-frame[data-astro-cid-xo72wa3m].youtube-loading .youtube-placeholder[data-astro-cid-xo72wa3m]{opacity:1;visibility:visible;pointer-events:auto}.video-frame[data-astro-cid-xo72wa3m]{border:0;border-radius:0;width:100%;height:100%;transition:opacity .3s;display:block;position:absolute;inset:0;margin:0!important}.video-tabs-frame[data-astro-cid-xo72wa3m].platform-bilibili .bilibili-frame[data-astro-cid-xo72wa3m]{opacity:1;pointer-events:auto;z-index:2}.video-tabs-frame[data-astro-cid-xo72wa3m].platform-bilibili .youtube-frame[data-astro-cid-xo72wa3m]{opacity:0;pointer-events:none;z-index:1}.video-tabs-frame[data-astro-cid-xo72wa3m].platform-youtube .youtube-frame[data-astro-cid-xo72wa3m]{opacity:1;pointer-events:auto;z-index:2}.video-tabs-frame[data-astro-cid-xo72wa3m].platform-youtube .bilibili-frame[data-astro-cid-xo72wa3m]{opacity:0;pointer-events:none;z-index:1}.video-tabs-frame[data-astro-cid-xo72wa3m].bilibili-loading .bilibili-frame[data-astro-cid-xo72wa3m],.video-tabs-frame[data-astro-cid-xo72wa3m].youtube-loading .youtube-frame[data-astro-cid-xo72wa3m]{opacity:0}.loader-spinner[data-astro-cid-xo72wa3m]{border:3px solid #ffffff59;border-top-color:#fff;border-radius:50%;width:36px;height:36px;margin-bottom:.75rem}.video-tabs-frame[data-astro-cid-xo72wa3m].bilibili-loading .bilibili-placeholder[data-astro-cid-xo72wa3m] .loader-spinner[data-astro-cid-xo72wa3m],.video-tabs-frame[data-astro-cid-xo72wa3m].youtube-loading .youtube-placeholder[data-astro-cid-xo72wa3m] .loader-spinner[data-astro-cid-xo72wa3m]{animation:.8s linear infinite spin}.loader-text[data-astro-cid-xo72wa3m]{letter-spacing:.05em;text-shadow:0 1px 2px #0003;font-size:.875rem;font-weight:500}@keyframes spin{to{transform:rotate(360deg)}}.video-tabs-footer[data-astro-cid-xo72wa3m]{background:var(--bg-secondary);border-top:1px solid var(--border);justify-content:center;align-items:center;padding:.625rem 1.25rem;display:flex}.video-external-link[data-astro-cid-xo72wa3m]{align-items:center;gap:.5rem;font-family:system-ui,-apple-system,sans-serif;font-size:.8125rem;font-weight:500;text-decoration:none;transition:all .25s cubic-bezier(.4,0,.2,1)}.platform-bilibili-link[data-astro-cid-xo72wa3m]{color:var(--text-muted,#6e6e6e)}.platform-bilibili-link[data-astro-cid-xo72wa3m]:hover{color:#00aeec}.platform-youtube-link[data-astro-cid-xo72wa3m]{color:var(--text-muted,#6e6e6e)}.platform-youtube-link[data-astro-cid-xo72wa3m]:hover{color:red}.external-icon[data-astro-cid-xo72wa3m]{flex-shrink:0;width:18px;height:18px;display:block}.local-video[data-astro-cid-yngxbivw]{--lv-max-h:min(70vh, 560px);margin:1.5rem 0 2rem}.lv-frame[data-astro-cid-yngxbivw]{border:1px solid var(--border);width:100%;min-height:160px;max-width:calc(var(--lv-max-h) * var(--lv-ratio,999));background:#000;border-radius:8px;margin-inline:auto;line-height:0;position:relative;overflow:hidden}.local-video[data-astro-cid-yngxbivw] .lv-frame[data-astro-cid-yngxbivw] video[data-astro-cid-yngxbivw].lv-player{width:100%;height:auto;max-height:var(--lv-max-h);aspect-ratio:auto;border:none;border-radius:0;display:block;margin:0!important}.local-video[data-astro-cid-yngxbivw].lv-sized .lv-frame[data-astro-cid-yngxbivw]{min-height:0}.local-video[data-astro-cid-yngxbivw].lv-sized .lv-frame[data-astro-cid-yngxbivw] video[data-astro-cid-yngxbivw].lv-player{aspect-ratio:var(--lv-ratio)}.lv-cover[data-astro-cid-yngxbivw]{z-index:2;cursor:pointer;opacity:1;background:#0000001f;border:0;justify-content:center;align-items:center;padding:0;transition:opacity .25s;display:flex;position:absolute;inset:0}.local-video[data-astro-cid-yngxbivw].lv-playing .lv-cover[data-astro-cid-yngxbivw]{opacity:0;pointer-events:none}.lv-play-btn[data-astro-cid-yngxbivw]{background:#ffffffeb;border-radius:50%;justify-content:center;align-items:center;width:64px;height:64px;transition:transform .2s;display:flex;box-shadow:0 2px 12px #00000059}.lv-cover[data-astro-cid-yngxbivw]:hover .lv-play-btn[data-astro-cid-yngxbivw]{transform:scale(1.08)}.lv-play-btn[data-astro-cid-yngxbivw] svg[data-astro-cid-yngxbivw]{fill:#1a1a1a;width:34px;height:34px;margin-left:3px}.local-video[data-astro-cid-yngxbivw] figcaption[data-astro-cid-yngxbivw]{color:var(--text-subtle);text-align:center;margin-top:.25rem;font-size:.8125rem;line-height:1.5}.ec-tabs{margin:1.5em 0}.ec-tabs .expressive-code{margin:0!important}.ec-tabs .expressive-code .frame,.ec-tabs .expressive-code pre{border-top-left-radius:0!important}.ec-tabs-bar{background:0 0;border:none;align-items:flex-end;gap:3px;padding:0;display:flex}.ec-tab-btn{border:var(--ec-brdWd) solid var(--ec-brdCol);color:var(--ec-codeFg);opacity:.6;cursor:pointer;font-size:var(--ec-uiFontSize);font-family:var(--ec-uiFontFml);white-space:nowrap;z-index:0;background:#ffffff0a;border-bottom:none;border-radius:6px 6px 0 0;align-items:center;margin-bottom:-1.5px;padding:5px 14px;transition:opacity .15s,background .15s;display:inline-flex;position:relative}.ec-tab-btn:hover{opacity:.75;background:#ffffff12}.ec-tab-btn.active{opacity:1;background:var(--ec-codeBg);z-index:2}[data-theme=light] .ec-tab-btn{background:var(--bg);border-color:var(--code-border);color:var(--text-subtle);opacity:1}[data-theme=light] .ec-tab-btn:hover{color:var(--text-muted)}[data-theme=light] .ec-tab-btn.active{background:var(--code-tab-bg);border-color:var(--code-border);color:var(--text-muted);opacity:1}.chat-module[data-ai-style=claude]{--inline-bg:#ffffff1a;--inline-text:#e8e6e1;--chip-border:#ffffff24;--code-border:#ffffff24;--chat-cell-gap:3px;--chat-cell-bg:#ffffff0e;--chat-cell-head-bg:#ffffff17;--ct-tool-verb:#918c84;--ct-tool-file:#e8e6e1;--ct-tool-add:#6cd08a;--ct-tool-del:#f2787e;--cd-border:#262625;--cd-bg:#131312;--cd-title:#f5f4f0;--cd-muted:#7c7b76;--cd-placeholder:#73726d;--cd-icon-bg:transparent;--cd-opt-border:transparent;--cd-opt-bg:#212120;--cd-opt-hover-bg:#2d2d2c;--cd-keycap-border:#ffffff21;--cd-keycap-shadow:#ffffff0f;--cd-keycap-text:#a6a59d;--cd-input-bg:#2c2c2c;--cd-input-border:#424241;--cd-btn-bg:#2d2d2c;--cd-btn-text:#ecebe8;--cd-btn-key:#a6a59d;--cd-btn-primary-bg:#777776;--cd-btn-primary-text:#131312;--cd-btn-primary-key:#131312;--cd-btn-primary-key-border:#13131240;--cd-btn-primary-key-shadow:#1313121a;--cd-step-bg:#2d1300;--cd-step-text:#c78500}[data-theme=light] .chat-module[data-ai-style=claude]{--inline-bg:#0000000f;--inline-text:#37352f;--chip-border:#0000001a;--code-border:#0000001f;--chat-cell-gap:3px;--chat-cell-bg:#0000000b;--chat-cell-head-bg:#00000013;--ct-tool-verb:#6e6a64;--ct-tool-file:#2b2926;--ct-tool-add:#157f3c;--ct-tool-del:#c34;--cd-border:#dedcd3;--cd-bg:#faf9f5;--cd-title:#141413;--cd-muted:#6f6d67;--cd-placeholder:#8e8b84;--cd-icon-bg:transparent;--cd-opt-border:transparent;--cd-opt-bg:#efece6;--cd-opt-hover-bg:#e5e1d9;--cd-keycap-border:#14141329;--cd-keycap-shadow:#14141312;--cd-keycap-text:#6b6860;--cd-input-bg:#fff;--cd-input-border:#d5d2c9;--cd-btn-bg:#e6e3dc;--cd-btn-text:#1f1e1d;--cd-btn-key:#6b6860;--cd-btn-primary-bg:#2b2926;--cd-btn-primary-text:#fafaf7;--cd-btn-primary-key:#fafaf7e0;--cd-btn-primary-key-border:#fafaf742;--cd-btn-primary-key-shadow:#fafaf71a;--cd-step-bg:#fcefd9;--cd-step-text:#b45309}.chat-module[data-ai-style=android-studio]{--as-bg:#191a1c;--as-panel:#1e2022;--as-ai-message-bg:#1e2022;--as-control:#2b2d30;--as-control-strong:#393b40;--as-border:#41444a;--as-text:#d7d8dd;--as-muted:#8b8d96;--as-accent:#4c8dff;--as-inner-bg:transparent;--as-inner-border:#46494f;--as-inner-divider:#3f4247;--as-inner-chip:#47494f;--as-inner-icon:#ced0d6;--as-inner-command-bg:transparent;--as-inner-command-border:#55585e;--as-inner-copy-bg:#34363a;--as-inner-copy-hover:#3b3d42;--inline-bg:#34363b;--inline-text:#d7d8dd;--chip-border:#44474d;--code-border:#44474d;--chat-cell-gap:3px;--chat-cell-bg:#292b2f;--chat-cell-head-bg:#34363b;--ct-tool-verb:#8b8d96;--ct-tool-file:#d7d8dd;--ct-tool-add:#69c783;--ct-tool-del:#f07178;--cd-border:#41444a;--cd-bg:transparent;--cd-title:#d7d8dd;--cd-muted:#8b8d96;--cd-placeholder:#6f727a;--cd-icon-bg:#34363b;--cd-opt-border:#41444a;--cd-opt-bg:#25272a;--cd-btn-bg:#34363b;--cd-btn-text:#d7d8dd;--cd-btn-key:#8b8d96;--cd-btn-primary-bg:#d7d8dd;--cd-btn-primary-text:#202124;--cd-btn-primary-key:#2021248c;--cd-step-bg:#4c8dff2e;--cd-step-text:#78a7ff}[data-theme=light] .chat-module[data-ai-style=android-studio]{--as-bg:#fff;--as-panel:#fff;--as-ai-message-bg:transparent;--as-control:#f0f1f3;--as-control-strong:#e3e5e9;--as-border:#dde0e5;--as-text:#202124;--as-muted:#74777f;--as-accent:#3478f6;--as-inner-bg:#fff;--as-inner-border:#dde0e5;--as-inner-divider:#e4e6ea;--as-inner-chip:#e7e9ed;--as-inner-icon:#74777f;--as-inner-command-bg:#fff;--as-inner-command-border:#c9cdd4;--as-inner-copy-bg:#e7e9ed;--as-inner-copy-hover:#dde0e5;--inline-bg:#f1f2f4;--inline-text:#202124;--chip-border:#dde0e5;--code-border:#dde0e5;--chat-cell-bg:#f5f6f8;--chat-cell-head-bg:#eceef1;--ct-tool-verb:#74777f;--ct-tool-file:#202124;--ct-tool-add:#248a48;--ct-tool-del:#c7464d;--cd-border:#dde0e5;--cd-bg:#fff;--cd-title:#202124;--cd-muted:#74777f;--cd-placeholder:#999ca3;--cd-icon-bg:#f0f1f3;--cd-opt-border:#dde0e5;--cd-opt-bg:#f8f8f9;--cd-btn-bg:#e9eaed;--cd-btn-text:#202124;--cd-btn-key:#74777f;--cd-btn-primary-bg:#202124;--cd-btn-primary-text:#fff;--cd-btn-primary-key:#fff9;--cd-step-bg:#3478f61f;--cd-step-text:#2765d4}.chat-module[data-ai-style=agy]{--agy-bg:#070707;--agy-border:#1e1e1e;--agy-user-bg:#151515;--agy-user-border:#1d1d1d;--agy-dialog-border:#151515;--agy-panel:#151515;--agy-panel-border:#1d1d1d;--agy-text:#dedede;--agy-text-secondary:#9e9e9e;--agy-step-text:#838383;--agy-muted:#787878;--agy-divider:#141414;--agy-row-hover:#0e0e0e;--agy-send-bg:#242424;--agy-send-fg:#9a9a9a;--inline-bg:#ffffff14;--inline-text:#dedede;--chip-border:#242424;--code-border:#242424;--chat-cell-gap:3px;--chat-cell-bg:#121212;--chat-cell-head-bg:#1a1a1a;--ct-tool-verb:#686868;--ct-tool-file:#888;--ct-tool-lines:#686868;--ct-tool-add:#4ade80;--ct-tool-del:#f87171;--cd-border:#1d1d1d;--cd-bg:transparent;--cd-title:#dedede;--cd-muted:#9e9e9e;--cd-placeholder:#666;--cd-icon-bg:#1c1c1c;--cd-opt-border:#1d1d1d;--cd-opt-bg:#121212;--cd-btn-bg:#1e1e1e;--cd-btn-text:#dedede;--cd-btn-key:#787878;--cd-btn-primary-bg:#dedede;--cd-btn-primary-text:#070707;--cd-btn-primary-key:#0707078c;--cd-step-bg:#60a5fa29;--cd-step-text:#60a5fa}[data-theme=light] .chat-module[data-ai-style=agy]{--agy-bg:#f7f7f7;--agy-border:#e2e2e2;--agy-user-bg:#ececec;--agy-user-border:#dedede;--agy-dialog-border:#e0e0e0;--agy-panel:#fff;--agy-panel-border:#d9d9d9;--agy-text:#171717;--agy-text-secondary:#525252;--agy-step-text:#595959;--agy-muted:#757575;--agy-divider:#e4e4e4;--agy-row-hover:#efefef;--agy-send-bg:#eaeaea;--agy-send-fg:#525252;--inline-bg:#0000000f;--inline-text:#171717;--chip-border:#dedede;--code-border:#dedede;--chat-cell-bg:#efefef;--chat-cell-head-bg:#e5e5e5;--ct-tool-verb:#737373;--ct-tool-file:#3d3d3d;--ct-tool-lines:#737373;--ct-tool-add:#16a34a;--ct-tool-del:#dc2626;--cd-border:#dfdfdf;--cd-bg:transparent;--cd-title:#171717;--cd-muted:#525252;--cd-placeholder:#999;--cd-icon-bg:#ececec;--cd-opt-border:#dedede;--cd-opt-bg:#fff;--cd-btn-bg:#eaeaea;--cd-btn-text:#171717;--cd-btn-key:#737373;--cd-btn-primary-bg:#171717;--cd-btn-primary-text:#fff;--cd-btn-primary-key:#fff9;--cd-step-bg:#2563eb1f;--cd-step-text:#2563eb}.chat-module[data-anim] 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