.jd-course{--jd-background:var(--color-fd-background);--jd-foreground:var(--color-fd-foreground);--jd-card:var(--color-fd-card);--jd-primary:var(--color-fd-primary);--jd-primary-foreground:var(--color-fd-primary-foreground);--jd-secondary:var(--color-fd-secondary);--jd-muted:var(--color-fd-muted-foreground);--jd-border:var(--color-fd-border);--background:var(--jd-background);--primary:var(--jd-primary);width:100%;min-width:0}.jd-course *,.jd-course :before,.jd-course :after{border-color:var(--jd-border)}.jd-course .course-main{max-width:960px;margin:56px auto 76px;padding:0 24px}.jd-course .reading-main{max-width:800px;margin:40px auto 64px;padding:0 24px}.jd-course .eyebrow{color:#6a786d;letter-spacing:.08em;margin-bottom:8px;font-size:14px}.jd-course .primary-action{color:#fff;background:#355d46;border-radius:999px;align-items:center;gap:32px;min-height:48px;padding:0 24px;font-size:16px;font-weight:600;display:inline-flex}.jd-course .primary-action:hover{background:#294d37}.jd-course .back-link{color:#355d46;font-size:14px}.jd-course .site-footer{border-top:1px solid var(--color-fd-border);text-align:center;color:var(--color-fd-muted-foreground);padding:28px 20px;font-size:14px;line-height:2}.jd-course .prose{color:#334438;line-height:1.95}.jd-course .prose h2{margin-top:2.2em;font-size:1.4em}.jd-course .prose h3{font-size:1.12em}.jd-course .prose blockquote{background:var(--color-fd-secondary);border-color:var(--color-fd-primary);color:var(--color-fd-muted-foreground);border-radius:0 8px 8px 0;padding:6px 18px;font-style:normal;font-weight:400}.jd-course .prose blockquote p:before,.jd-course .prose blockquote p:after{content:none}.jd-course .prose img{max-height:420px}.jd-course .table-container,.jd-course .prose pre{overflow-x:auto}.jd-course .prose a{overflow-wrap:anywhere}.jd-course .course-video-stage{background:#171411;border-radius:16px;justify-content:center;padding:12px;display:flex;overflow:hidden}.jd-course .course-video-player{width:min(100%,calc(70svh * var(--video-ratio)));--media-object-fit:contain;--media-object-position:center;--media-background-color:#171411;--playback-rate-menu-button:inline-flex;border-radius:8px;max-width:100%;display:block;overflow:hidden}.jd-course .course-video-player:fullscreen{--media-object-fit:contain;width:100%;height:100%;aspect-ratio:auto!important}@media (max-width:600px){.jd-course .site-header>div{min-height:68px;padding:14px 20px}.jd-course .course-main{margin-top:28px;padding:0 20px}.jd-course .reading-main{margin-top:26px;padding:0 20px}.jd-course .preview-badge{font-size:12px}.jd-course .brand{font-size:16px}}.jd-course .preview-controls{color:var(--color-fd-muted-foreground);justify-content:flex-end;align-items:center;gap:8px;margin-bottom:20px;font-size:14px;display:flex}.jd-course .preview-controls select{border:1px solid var(--color-fd-border);background:var(--color-fd-card);color:var(--color-fd-foreground);border-radius:8px;padding:6px}.jd-course [data-lesson-path]{text-align:left;cursor:pointer;width:100%;display:block}.jd-course .trial-label{color:#1e4d3a;background:0 0;border:1px solid;border-radius:999px;flex-shrink:0;padding:1px 10px;font-size:14px;line-height:1.5}.jd-course .contact-dialog{color:#22342a;background:#fff;border:1px solid #dbe1d9;border-radius:16px;width:min(400px,100vw - 32px);max-height:calc(100svh - 32px);margin:auto;padding:0;position:fixed;inset:0;overflow:auto;box-shadow:0 24px 80px #17251b30}.jd-course .contact-dialog::backdrop{background:#1f1a14b3}.jd-course .contact-panel{text-align:center;padding:32px 28px;position:relative}.jd-course .dialog-close{cursor:pointer;width:36px;height:36px;color:var(--color-fd-muted-foreground);border-radius:999px;place-items:center;display:grid;position:absolute;top:12px;right:12px}.jd-course .dialog-close:hover{background:var(--color-fd-muted)}.jd-course .contact-lock{color:#355d46;background:#edf3ec;border-radius:50%;padding:12px;display:inline-flex}.jd-course .contact-panel h2{margin-top:16px;font-size:22px;font-weight:600}.jd-course .contact-panel p{color:#626d65;margin-top:8px;font-size:14px;line-height:1.7}.jd-course .qr-placeholder{border:1px dashed var(--color-fd-border);color:#768176;background:#fafbf8;border-radius:8px;place-items:center;width:180px;height:180px;margin:24px auto 16px;font-size:14px;display:grid}.jd-course .contact-panel .contact-account-note{font-size:14px}.jd-course .login-action{color:#355d46;text-underline-offset:4px;cursor:pointer;margin-top:20px;font-size:14px;text-decoration:underline}.jd-course .contact-panel .preview-login-note{background:var(--color-fd-muted);border-radius:8px;padding:12px;font-size:14px}.jd-course .locked-lesson{background:#fff;border:1px solid #dbe1d9;border-radius:16px;flex-direction:column;align-items:center;gap:20px;padding:56px 20px;display:flex}.jd-course .locked-lesson h2{font-size:18px}@media (prefers-reduced-motion:reduce){.jd-course *{transition-duration:0s!important;animation-duration:0s!important}}.jd-course .course-main{max-width:960px}.jd-course .reading-main{max-width:800px}.jd-course .prose{color:var(--jd-foreground);overflow-wrap:anywhere;font-size:1rem}.jd-course .prose p{margin:1.2em 0}.jd-course .prose h2,.jd-course .prose h3{margin-bottom:1em;font-weight:650}.jd-course .prose ul,.jd-course .prose ol{margin:1em 0;padding-left:1.5em}.jd-course .prose ul{list-style:outside}.jd-course .prose ol{list-style:decimal}.jd-course .prose li{padding:.2em 0}.jd-course .prose a{color:var(--jd-primary);text-decoration:underline}.jd-course .prose img{max-width:100%;height:auto;margin:1.5em auto}.jd-course .prose table{border-collapse:collapse;width:100%}.jd-course .prose th,.jd-course .prose td{border:1px solid var(--jd-border);text-align:left;padding:.6em}.jd-course .prose pre{background:var(--jd-secondary);border-radius:8px;padding:1em}.jd-course .prose hr{margin:2em 0}.jd-course .primary-action{background:var(--jd-primary);color:var(--jd-primary-foreground);cursor:pointer}.jd-course .primary-action:hover{background:var(--jd-primary);filter:brightness(.95)}.jd-course .eyebrow,.jd-course .contact-panel p{color:var(--jd-muted)}.jd-course .back-link,.jd-course .login-action{color:var(--jd-primary)}.jd-course .contact-dialog,.jd-course .locked-lesson{background:var(--jd-card);color:var(--jd-foreground);border-color:var(--jd-border)}.jd-course .qr-placeholder{background:var(--jd-background);color:var(--jd-muted)}.jd-course .contact-qr{object-fit:contain;width:180px;height:180px;margin:24px auto 16px;display:block}.jd-course .contact-lock{color:var(--jd-primary);background:var(--jd-secondary)}.jd-course .trial-label{color:var(--jd-primary);border-color:var(--jd-primary);background:0 0}.jd-course .pdf-pages{gap:24px;margin-top:24px;display:grid}.jd-course .pdf-pages figure{min-width:0;margin:0}.jd-course .pdf-pages img{border:1px solid var(--color-fd-border);background:#fff;width:100%;height:auto;display:block}.jd-course .pdf-pages figcaption{text-align:center;color:var(--color-fd-muted-foreground);margin-top:8px;font-size:14px}.jd-course .contact-wechat{background:var(--color-fd-muted);border-radius:16px;padding:20px;font-size:18px}