.module-page[data-astro-cid-ak3uvd6m]{background:var(--surface);min-height:100vh;color:var(--foreground)}.module-container[data-astro-cid-ak3uvd6m]{width:min(100% - 40px,920px);margin:0 auto;padding:34px 0 80px}.back-row[data-astro-cid-ak3uvd6m]{margin-bottom:32px}.back-link[data-astro-cid-ak3uvd6m]{color:var(--foreground-muted);font-size:13px;font-weight:500;text-decoration:none;transition:color .15s}.back-link[data-astro-cid-ak3uvd6m]:hover{color:var(--foreground-strong)}.module-header[data-astro-cid-ak3uvd6m]{max-width:760px;margin-bottom:30px}.module-category[data-astro-cid-ak3uvd6m]{color:var(--foreground-muted);letter-spacing:.08em;text-transform:uppercase;margin-bottom:10px;font-size:12px;font-weight:600;display:block}.module-header[data-astro-cid-ak3uvd6m] h1[data-astro-cid-ak3uvd6m]{color:var(--foreground-strong);letter-spacing:-.035em;margin:0;font-size:clamp(30px,5vw,44px);font-weight:700;line-height:1.15}.module-lead[data-astro-cid-ak3uvd6m]{max-width:680px;color:var(--foreground-muted);margin:16px 0 0;font-size:15px;line-height:1.75}.video-section[data-astro-cid-ak3uvd6m]{margin-bottom:36px}.video-wrapper[data-astro-cid-ak3uvd6m]{aspect-ratio:16/9;background:var(--inverse);border-radius:7px;width:100%;position:relative;overflow:hidden}.video-wrapper[data-astro-cid-ak3uvd6m] iframe[data-astro-cid-ak3uvd6m]{border:0;width:100%;height:100%;position:absolute;inset:0}.video-empty[data-astro-cid-ak3uvd6m]{width:100%;height:100%;color:var(--foreground-subtle);justify-content:center;align-items:center;font-size:14px;display:flex}.lesson-content[data-astro-cid-ak3uvd6m]{border-top:1px solid var(--border);padding:28px 0 34px}.lesson-heading[data-astro-cid-ak3uvd6m]{justify-content:space-between;align-items:baseline;gap:20px;margin-bottom:16px;display:flex}.lesson-heading[data-astro-cid-ak3uvd6m] h2[data-astro-cid-ak3uvd6m]{color:var(--foreground-strong);margin:0;font-size:18px;font-weight:650}.lesson-heading[data-astro-cid-ak3uvd6m] span[data-astro-cid-ak3uvd6m]{color:var(--foreground-subtle);font-size:12px}.content-text[data-astro-cid-ak3uvd6m]{max-width:760px;color:var(--foreground);white-space:pre-line;letter-spacing:.005em;font-size:15px;line-height:1.9}.content-empty[data-astro-cid-ak3uvd6m]{color:var(--foreground-subtle);padding:22px 0;font-size:14px;font-style:italic}.lesson-status[data-astro-cid-ak3uvd6m]{border-top:1px solid var(--border);justify-content:space-between;align-items:center;gap:30px;padding:28px 0;display:flex}.lesson-status[data-astro-cid-ak3uvd6m] strong[data-astro-cid-ak3uvd6m]{color:var(--foreground-strong);margin-bottom:5px;font-size:14px;font-weight:600;display:block}.lesson-status[data-astro-cid-ak3uvd6m] p[data-astro-cid-ak3uvd6m]{color:var(--foreground-muted);margin:0;font-size:13px;line-height:1.6}.finish-button[data-astro-cid-ak3uvd6m]{border:1px solid var(--border);background:var(--surface);min-width:140px;color:var(--foreground-strong);font:inherit;cursor:pointer;border-radius:6px;flex-shrink:0;padding:10px 15px;font-size:13px;font-weight:600;transition:background .15s,border-color .15s,color .15s}.finish-button[data-astro-cid-ak3uvd6m]:hover{border-color:var(--foreground-subtle);background:var(--surface-muted)}.finish-button[data-astro-cid-ak3uvd6m].completed{border-color:var(--foreground-strong);background:var(--foreground-strong);color:var(--surface)}.lesson-navigation[data-astro-cid-ak3uvd6m]{border-top:1px solid var(--border);grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:30px;padding-top:28px;display:grid}.nav-side[data-astro-cid-ak3uvd6m]{min-width:0}.nav-side-right[data-astro-cid-ak3uvd6m]{text-align:right}.lesson-nav-link[data-astro-cid-ak3uvd6m]{max-width:100%;color:inherit;flex-direction:column;gap:5px;text-decoration:none;display:inline-flex}.nav-label[data-astro-cid-ak3uvd6m]{color:var(--foreground-subtle);letter-spacing:.06em;text-transform:uppercase;font-size:11px;font-weight:500}.nav-title[data-astro-cid-ak3uvd6m]{color:var(--foreground);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:600;overflow:hidden}.lesson-nav-link[data-astro-cid-ak3uvd6m]:hover .nav-title[data-astro-cid-ak3uvd6m]{text-underline-offset:4px;text-decoration:underline 1px}@media (width<=640px){.module-container[data-astro-cid-ak3uvd6m]{width:min(100% - 30px,920px);padding:26px 0 55px}.back-row[data-astro-cid-ak3uvd6m],.module-header[data-astro-cid-ak3uvd6m]{margin-bottom:24px}.module-header[data-astro-cid-ak3uvd6m] h1[data-astro-cid-ak3uvd6m]{font-size:30px}.module-lead[data-astro-cid-ak3uvd6m]{font-size:14px}.video-section[data-astro-cid-ak3uvd6m]{margin-bottom:28px}.video-wrapper[data-astro-cid-ak3uvd6m]{border-radius:5px}.lesson-status[data-astro-cid-ak3uvd6m]{flex-direction:column;align-items:stretch;gap:18px}.finish-button[data-astro-cid-ak3uvd6m]{width:100%}.lesson-navigation[data-astro-cid-ak3uvd6m]{grid-template-columns:1fr;gap:22px}.nav-side-right[data-astro-cid-ak3uvd6m]{text-align:left}}