/* Live tutorial content; the original OUOU header remains the page shell. */
html[data-ouou-tutorial-reader] main.content:not(.ouou-tutorial-root) > * { visibility: hidden; }
.content.ouou-tutorial-root { width: min(1140px, 100%); margin: 0 auto; padding: 36px 28px 100px; color: #202328; }
.ouou-tutorial-root *, .ouou-tutorial-root *::before, .ouou-tutorial-root *::after { box-sizing: border-box; }
.ouou-tutorial-root a { color: inherit; text-decoration: none; }
.ouou-tutorial-root button, .ouou-tutorial-root a { -webkit-tap-highlight-color: transparent; }
.ouou-tutorial-root :is(button, a):focus-visible { outline: 2px solid #477cf0; outline-offset: 4px; }
.ouou-tutorial-root h1:focus { outline: none; }
.ouou-tutorial-nav-link { display: flex; align-items: center; align-self: stretch; color: #477cf0; font-size: 15px; font-weight: 600; text-decoration: none; }
.ouou-tutorial-list-heading { margin: 4px 0 36px; padding-bottom: 30px; border-bottom: 1px solid #e7e8eb; }
.ouou-tutorial-eyebrow { margin: 0 0 14px; color: #6c7480; font-size: 12px; }
.ouou-tutorial-list-heading h1 { margin: 0; font-size: 34px; font-weight: 600; line-height: 1.4; letter-spacing: -.8px; }
.ouou-tutorial-list-intro { margin: 14px 0 0; color: #757c87; font-size: 15px; line-height: 1.8; }
.ouou-tutorial-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px 24px; }
.ouou-tutorial-card { min-width: 0; display: flex; flex-direction: column; border: 1px solid #e7e8eb; border-radius: 8px; overflow: hidden; background: #fff; transition: border-color .18s ease; }
.ouou-tutorial-card:hover { border-color: #b6c6e4; }
.ouou-tutorial-card-link { display: block; flex: 1; }
.ouou-tutorial-card-copy { padding: 22px 20px 18px; }
.ouou-tutorial-category { margin: 0; color: #7b8189; font-size: 12px; font-weight: 400; line-height: 1.7; }
.ouou-tutorial-card h2 { display: -webkit-box; margin: 10px 0 12px; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; font-size: 19px; line-height: 1.6; font-weight: 600; overflow-wrap: anywhere; }
.ouou-tutorial-card-summary { display: -webkit-box; margin: 0; overflow: hidden; -webkit-box-orient: vertical; -webkit-line-clamp: 2; color: #7b8189; font-size: 13px; line-height: 1.9; overflow-wrap: anywhere; }
.ouou-tutorial-card-footer { margin: 0 20px; padding: 17px 0 20px; border-top: 1px solid #eff0f2; }
.ouou-tutorial-byline { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 10px; font-size: 13px; line-height: 1.6; }
.ouou-tutorial-author { overflow-wrap: anywhere; font-weight: 500; }
.ouou-tutorial-verified { color: #477cf0; font-size: 11px; white-space: nowrap; }
.ouou-tutorial-operated { color: #7b8189; font-size: 11px; padding-left: 10px; border-left: 1px solid #e7e8eb; white-space: nowrap; }
.ouou-tutorial-date { display: block; margin-top: 12px; color: #91969d; font-size: 12px; line-height: 1.6; }
.ouou-tutorial-card-footer .ouou-tutorial-date { margin-top: 9px; font-size: 11px; }
.ouou-tutorial-list-footer { padding-top: 38px; text-align: center; color: #7b8189; font-size: 13px; }
.ouou-tutorial-end { margin: 0; font-size: 12px; }
.ouou-tutorial-empty { grid-column: 1 / -1; padding: 65px 24px 95px; text-align: center; }
.ouou-tutorial-empty h2 { margin: 0 0 14px; font-size: 20px; font-weight: 500; }
.ouou-tutorial-empty p { color: #7b8189; line-height: 1.8; }
.ouou-tutorial-back { display: inline-block; margin: 0 0 32px; color: #7b8189 !important; font-size: 13px; line-height: 1.8; }
.ouou-tutorial-back:hover { color: #477cf0 !important; }
.ouou-tutorial-layout { display: grid; grid-template-columns: minmax(0, 780px) 210px; gap: 72px; align-items: start; }
.ouou-tutorial-article { min-width: 0; overflow-wrap: anywhere; }
.ouou-tutorial-article-heading { padding-bottom: 28px; border-bottom: 1px solid #e7e8eb; }
.ouou-tutorial-article-heading h1 { margin: 12px 0 22px; font-size: 34px; line-height: 47px; font-weight: 600; letter-spacing: -.6px; }
.ouou-tutorial-section { margin-top: 44px; scroll-margin-top: 84px; }
.ouou-tutorial-section h2 { margin: 0 0 18px; font-size: 23px; line-height: 32px; font-weight: 600; }
.ouou-tutorial-section p, .ouou-tutorial-section li, .ouou-tutorial-plain-body { font-size: 15px; line-height: 30px; white-space: pre-wrap; }
.ouou-tutorial-section p { margin: 0 0 18px; }
.ouou-tutorial-section ul { margin: 0; padding-left: 22px; }
.ouou-tutorial-section li { margin-bottom: 10px; padding-left: 3px; }
.ouou-tutorial-tags { display: flex; flex-wrap: wrap; gap: 8px; margin: 18px 0 26px; }
.ouou-tutorial-tags span { padding: 5px 9px; border: 1px solid #e7e8eb; border-radius: 4px; color: #7b8189; font-size: 11px; }
.ouou-tutorial-expected { margin-top: 22px; padding: 16px 20px; border-left: 2px solid #c4d5f8; background: #f7f9fc; border-radius: 0 5px 5px 0; }
.ouou-tutorial-expected h3 { margin: 0 0 6px; color: #477cf0; font-size: 12px; font-weight: 500; }
.ouou-tutorial-expected p { margin: 0; color: #525b69; font-size: 14px; line-height: 27px; }
.ouou-tutorial-toc { position: sticky; top: 84px; max-height: calc(100vh - 112px); overflow: auto; border-left: 1px solid #e7e8eb; padding-left: 22px; margin-top: 7px; }
.ouou-tutorial-toc h2 { margin: 0 0 17px; font-size: 12px; font-weight: 600; line-height: 1.6; }
.ouou-tutorial-toc a { display: block; padding: 7px 0; color: #858c96; font-size: 12px; line-height: 20px; overflow-wrap: anywhere; }
.ouou-tutorial-toc a:hover { color: #477cf0; }
.ouou-tutorial-media { margin: 26px 0; overflow: hidden; }
.ouou-tutorial-media img, .ouou-tutorial-media video { display: block; width: 100%; height: auto; max-height: 780px; object-fit: contain; border-radius: 8px; background: #f5f6f8; }
.ouou-tutorial-media audio { display: block; width: 100%; }
.ouou-tutorial-media figcaption { margin-top: 10px; color: #91969d; font-size: 12px; line-height: 1.8; }
.ouou-tutorial-media.is-cover { margin: 0; aspect-ratio: 16 / 9; background: #f5f6f8; border-bottom: 1px solid #eff0f2; }
.ouou-tutorial-media.is-cover img { height: 100%; object-fit: cover; border-radius: 0; }
.ouou-tutorial-media-error { display: grid; place-content: center; justify-items: center; gap: 10px; padding: 30px 20px; min-height: 150px; border: 1px solid #e7e8eb; border-radius: 8px; background: #fafbfc; color: #7b8189; text-align: center; }
.ouou-tutorial-media-error p { margin: 0; font-size: 13px; line-height: 1.8; }
.ouou-tutorial-media.is-cover .ouou-tutorial-media-error { min-height: 100%; border: 0; border-radius: 0; }
.ouou-tutorial-plain-body { margin-top: 32px; }
.ouou-tutorial-button { display: inline-flex; align-items: center; justify-content: center; min-height: 40px; padding: 9px 20px; border: 1px solid #477cf0; border-radius: 5px; background: #477cf0; color: #fff; font-size: 13px; line-height: 20px; cursor: pointer; }
.ouou-tutorial-button.is-secondary { border-color: #dde1e7; background: #fff; color: #525b69; }
.ouou-tutorial-button:hover { filter: brightness(.97); }
.ouou-tutorial-state { max-width: 680px; margin: 100px auto; text-align: center; }
.ouou-tutorial-state h1 { margin: 0 0 18px; font-size: 25px; line-height: 1.5; font-weight: 500; }
.ouou-tutorial-state p { margin: 0 0 26px; color: #7b8189; font-size: 14px; line-height: 1.9; }
.ouou-tutorial-state .ouou-tutorial-button { margin: 0 6px 18px; }
.ouou-tutorial-state .ouou-tutorial-back { display: block; margin: 12px 0 0; }
@media (max-width: 1080px) {
  .ouou-tutorial-layout { gap: 38px; grid-template-columns: minmax(0, 1fr) 180px; }
  .ouou-tutorial-grid { gap: 24px 18px; }
  .ouou-tutorial-byline.is-compact { gap: 6px; }
}
@media (max-width: 940px) {
  .ouou-tutorial-layout { display: block; max-width: 780px; margin: 0 auto; }
  .ouou-tutorial-toc { display: none; }
  .ouou-tutorial-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 720px) {
  .content.ouou-tutorial-root { padding: 28px 17px 64px; }
  .ouou-tutorial-list-heading { margin: 0 0 26px; padding-bottom: 24px; }
  .ouou-tutorial-list-heading h1, .ouou-tutorial-article-heading h1 { font-size: 28px; line-height: 39px; }
  .ouou-tutorial-article-heading h1 { margin-top: 8px; }
  .ouou-tutorial-section h2 { font-size: 21px; line-height: 30px; }
  .ouou-tutorial-section { margin-top: 36px; }
  .ouou-tutorial-back { margin-bottom: 24px; }
  .ouou-tutorial-state { margin: 65px auto; }
  .ouou-tutorial-nav-link { min-height: 42px; padding: 0 12px; }
}
@media (max-width: 520px) {
  .ouou-tutorial-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
}
@media (prefers-reduced-motion: reduce) { .ouou-tutorial-card { transition: none; } }

.ouou-tutorial-scope{display:flex;gap:24px;border-bottom:1px solid #e8e9ed;margin:24px 0 8px}.ouou-tutorial-scope-link{padding:12px 0;color:#71717a;text-decoration:none;border-bottom:2px solid transparent;font-size:14px}.ouou-tutorial-scope-link[aria-current="page"]{color:#18181b;border-color:#18181b;font-weight:600}.ouou-tutorial-scope-link:focus-visible{outline:2px solid #2563eb;outline-offset:4px}