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.lesson-nav__arrow[data-astro-cid-yuryb3n3]{transform:translateY(-2px)}.lesson-nav__inner[data-astro-cid-yuryb3n3]{display:inline-flex;align-items:baseline;gap:.5rem;min-width:0;flex:1}.lesson-nav__btn--prev[data-astro-cid-yuryb3n3] .lesson-nav__inner[data-astro-cid-yuryb3n3]{justify-content:flex-start}.lesson-nav__btn--next[data-astro-cid-yuryb3n3] .lesson-nav__inner[data-astro-cid-yuryb3n3]{justify-content:flex-end}.lesson-nav__level[data-astro-cid-yuryb3n3]{font-family:var(--font-mono);font-size:.78rem;font-weight:var(--fw-bold);letter-spacing:.04em;color:var(--tile-accent);padding:.12rem .4rem;border-radius:4px;background:color-mix(in srgb,var(--tile-accent) 14%,transparent);flex-shrink:0;line-height:1.2}.lesson-nav__title[data-astro-cid-yuryb3n3]{color:var(--color-text);font-weight:var(--fw-medium);min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lesson-nav__btn--edge[data-astro-cid-yuryb3n3]{border-style:dashed;color:var(--color-text-muted)}.lesson-nav__btn--edge[data-astro-cid-yuryb3n3] .lesson-nav__title[data-astro-cid-yuryb3n3]{color:var(--color-text-muted);font-style:italic}.lesson-nav__btn--register[data-astro-cid-yuryb3n3]{--tile-accent: var(--color-cic-cimc);border-style:solid;border-color:var(--color-cic-cimc);background:color-mix(in srgb,var(--color-cic-cimc) 8%,transparent)}.lesson-nav__btn--register[data-astro-cid-yuryb3n3] .lesson-nav__title[data-astro-cid-yuryb3n3]{color:var(--color-cic-cimc);font-style:normal;font-weight:var(--fw-semibold)}.lesson-nav__btn--register[data-astro-cid-yuryb3n3] .lesson-nav__arrow[data-astro-cid-yuryb3n3]{color:var(--color-cic-cimc)}.lesson-nav__btn--register[data-astro-cid-yuryb3n3]:hover{background:color-mix(in srgb,var(--color-cic-cimc) 14%,transparent)}@media (max-width: 720px){.lesson-nav[data-astro-cid-yuryb3n3]{grid-template-columns:1fr}.lesson-nav__btn--prev[data-astro-cid-yuryb3n3],.lesson-nav__btn--next[data-astro-cid-yuryb3n3]{grid-column:1}}.lesson-card--foundation[data-astro-cid-yuryb3n3]{background:color-mix(in srgb,var(--topic-accent) 5%,var(--color-bg));border-left:6px solid var(--topic-accent)}.badge--foundation[data-astro-cid-yuryb3n3]{background:var(--topic-accent);color:#fff;-webkit-text-fill-color:#fff}.video-wrap[data-astro-cid-yuryb3n3]{position:relative;padding-bottom:56.25%;height:0;overflow:hidden;border-radius:var(--radius-md);background:var(--color-off-white)}.video-wrap[data-astro-cid-yuryb3n3] iframe[data-astro-cid-yuryb3n3]{position:absolute;top:0;left:0;width:100%;height:100%;border:0}.topic-sec[data-astro-cid-yuryb3n3]{--topic-accent: var(--color-cic-cimc);padding-block:var(--space-12);position:relative;scroll-margin-top:88px}.topic-sec--alt[data-astro-cid-yuryb3n3]{background:color-mix(in srgb,var(--topic-accent) 7%,var(--color-bg));box-shadow:inset 0 1px color-mix(in srgb,var(--topic-accent) 18%,transparent),inset 0 -1px color-mix(in srgb,var(--topic-accent) 18%,transparent)}.topic-head[data-astro-cid-yuryb3n3]{display:flex;align-items:flex-start;gap:clamp(var(--space-3),2.5vw,var(--space-5));margin-bottom:var(--space-7);padding-bottom:var(--space-4);border-bottom:1px solid color-mix(in srgb,var(--topic-accent) 30%,transparent)}.topic-head__glyph-disc[data-astro-cid-yuryb3n3]{width:clamp(56px,7vw,78px);height:clamp(56px,7vw,78px);flex-shrink:0;display:flex;align-items:center;justify-content:center;border-radius:50%;background:var(--topic-accent);color:#fff;-webkit-text-fill-color:#fff;font-family:var(--font-heading);font-size:clamp(1.6rem,3vw,2.2rem);font-weight:var(--fw-bold);line-height:1;box-shadow:0 8px 22px color-mix(in srgb,var(--topic-accent) 30%,transparent)}.topic-head__main[data-astro-cid-yuryb3n3]{flex:1;min-width:0}.topic-head__num[data-astro-cid-yuryb3n3]{font-family:var(--font-mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--topic-accent);margin:0 0 .35rem;font-weight:var(--fw-bold);display:flex;align-items:center;gap:.5rem;flex-wrap:wrap}.topic-head__strand[data-astro-cid-yuryb3n3]{font-family:var(--font-body);font-size:.66rem;letter-spacing:.08em;padding:.12rem .5rem;border-radius:999px;background:color-mix(in srgb,var(--topic-accent) 14%,transparent);color:var(--topic-accent);border:1px solid color-mix(in srgb,var(--topic-accent) 32%,transparent)}.topic-head__strand[data-astro-cid-yuryb3n3]:before{content:"◆ ";opacity:.7}.topic-head__title[data-astro-cid-yuryb3n3]{font-family:var(--font-heading);font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:var(--fw-extrabold);color:var(--color-text);margin:0 0 var(--space-2);letter-spacing:-.01em;line-height:var(--lh-snug)}.topic-head__desc[data-astro-cid-yuryb3n3]{color:var(--color-text-muted);max-width:64ch;margin:0;line-height:var(--lh-normal)}.prob-grid[data-astro-cid-yuryb3n3]{display:grid;grid-template-columns:1fr;gap:var(--space-6)}@media (min-width: 768px){.prob-grid[data-astro-cid-yuryb3n3]{grid-template-columns:repeat(2,minmax(0,1fr))}}.prob-card[data-astro-cid-yuryb3n3]{background:var(--color-bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-card);overflow:hidden;position:relative;transition:box-shadow var(--motion-default) var(--motion-ease-out),transform var(--motion-default) var(--motion-ease-out)}.prob-card[data-astro-cid-yuryb3n3]:before{content:"";position:absolute;top:0;left:0;right:0;height:4px;background:var(--topic-accent, var(--color-cic-cimc));z-index:1}.prob-card[data-astro-cid-yuryb3n3]:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-2px)}.prob-card__body[data-astro-cid-yuryb3n3]{padding:var(--space-4) var(--space-5) var(--space-5)}.prob-card__badges[data-astro-cid-yuryb3n3]{display:flex;gap:var(--space-2);flex-wrap:wrap;margin-bottom:var(--space-3)}.prob-card__title[data-astro-cid-yuryb3n3]{font-family:var(--font-heading);font-size:1.2rem;font-weight:var(--fw-bold);line-height:var(--lh-snug);color:var(--color-text);margin:0 0 var(--space-3)}.prob-card__stem[data-astro-cid-yuryb3n3]{color:var(--color-text-muted);font-size:.95rem;line-height:var(--lh-normal);margin:0 0 var(--space-4)}.prob-card__stem[data-astro-cid-yuryb3n3] p[data-astro-cid-yuryb3n3]{margin:0}.badge[data-astro-cid-yuryb3n3]{display:inline-flex;align-items:center;font-family:var(--font-mono);font-size:.7rem;font-weight:var(--fw-medium);letter-spacing:.04em;padding:2px var(--space-2);border-radius:var(--radius-pill);white-space:nowrap}.badge--grade[data-astro-cid-yuryb3n3]{background:color-mix(in srgb,var(--color-cic-cimc) 14%,white);color:var(--color-cic-cimc)}.badge--level[data-astro-cid-yuryb3n3]{color:var(--topic-accent);-webkit-text-fill-color:var(--topic-accent);background:color-mix(in srgb,var(--topic-accent) 14%,white);border:1px solid color-mix(in srgb,var(--topic-accent) 24%,transparent)}.badge--l0[data-astro-cid-yuryb3n3],.badge--l1[data-astro-cid-yuryb3n3]{background:color-mix(in srgb,var(--topic-accent) 14%,white)}.badge--l2[data-astro-cid-yuryb3n3],.badge--l3[data-astro-cid-yuryb3n3]{background:color-mix(in srgb,var(--topic-accent) 32%,white);color:var(--topic-accent)}.badge--l4[data-astro-cid-yuryb3n3],.badge--l5[data-astro-cid-yuryb3n3],.badge--l6[data-astro-cid-yuryb3n3]{background:var(--topic-accent);color:#fff;-webkit-text-fill-color:#fff;border-color:var(--topic-accent)}.badge--dur[data-astro-cid-yuryb3n3]{background:var(--color-off-white);color:var(--color-text-muted)}.badge--trick[data-astro-cid-yuryb3n3]{background:color-mix(in srgb,var(--color-cic-cimc) 12%,white);color:var(--color-cic-cimc);font-family:var(--font-body);font-style:italic}.prob-card__trick[data-astro-cid-yuryb3n3]{border-top:1px solid var(--color-border);padding-top:var(--space-3)}.prob-card__trick[data-astro-cid-yuryb3n3] summary[data-astro-cid-yuryb3n3]{cursor:pointer;display:flex;align-items:center;gap:var(--space-2);list-style:none;font-size:.85rem}.prob-card__trick[data-astro-cid-yuryb3n3] summary[data-astro-cid-yuryb3n3]::-webkit-details-marker{display:none}.prob-card__trick[data-astro-cid-yuryb3n3] summary[data-astro-cid-yuryb3n3]:before{content:"▶";font-size:.6rem;color:var(--color-cic-cimc);transition:transform var(--motion-fast)}.prob-card__trick[data-astro-cid-yuryb3n3][open] summary[data-astro-cid-yuryb3n3]:before{transform:rotate(90deg)}.trick__label[data-astro-cid-yuryb3n3]{font-family:var(--font-mono);font-size:.7rem;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted)}.trick__name[data-astro-cid-yuryb3n3]{font-family:var(--font-body);font-weight:var(--fw-medium);color:var(--color-cic-cimc)}.trick__desc[data-astro-cid-yuryb3n3]{font-size:.9rem;color:var(--color-text-muted);line-height:var(--lh-normal);margin:var(--space-2) 0 0;padding-left:var(--space-4)}.empty-state[data-astro-cid-yuryb3n3]{display:none;text-align:center;color:var(--color-text-muted);font-size:1rem;padding:var(--space-12) 0}.cta-sec[data-astro-cid-yuryb3n3]{text-align:center}.cta-inner[data-astro-cid-yuryb3n3]{max-width:600px;margin:0 auto}.cta-inner__title[data-astro-cid-yuryb3n3]{font-family:var(--font-heading);font-size:clamp(1.5rem,3vw,2rem);font-weight:var(--fw-bold);color:var(--color-text);margin:0 0 var(--space-3)}.cta-inner__body[data-astro-cid-yuryb3n3]{color:var(--color-text-muted);margin:0 0 var(--space-6)}.cta-inner__actions[data-astro-cid-yuryb3n3]{display:flex;gap:var(--space-3);justify-content:center;flex-wrap:wrap}@media (max-width: 768px){.vhero[data-astro-cid-yuryb3n3]{padding:var(--space-16) 0 var(--space-10)}.found-card[data-astro-cid-yuryb3n3]{grid-template-columns:1fr}.found-card__body[data-astro-cid-yuryb3n3]{padding:0 var(--space-5) var(--space-5)}.found-card__video[data-astro-cid-yuryb3n3]{padding:var(--space-5) var(--space-5) 0}.prob-grid[data-astro-cid-yuryb3n3]{grid-template-columns:1fr}.filters__inner[data-astro-cid-yuryb3n3]{gap:var(--space-3)}.filters__group[data-astro-cid-yuryb3n3]{flex-wrap:wrap}}