.lib{background:var(--c-bg);color:var(--c-text);min-height:70vh}.lib__grid{grid-template-columns:296px minmax(0,1fr);gap:48px;max-width:1240px;margin:0 auto;padding:32px 24px 96px;display:grid}.lib__rail{align-self:stretch}.lib__rail-inner{max-height:calc(100vh - 108px);padding-right:8px;position:sticky;top:88px;overflow-y:auto}.lib__back{color:var(--c-text-3);margin-bottom:18px;font-size:.82rem;text-decoration:none;display:inline-block}.lib__back:hover{color:var(--c-accent)}.lib__product{color:var(--c-text);margin-bottom:6px;font-size:1.02rem;font-weight:700;line-height:1.3;text-decoration:none;display:block}.lib__meter{color:var(--c-text-3);align-items:center;gap:8px;margin:12px 0 22px;font-size:.76rem;display:flex}.lib__meter-bar{background:var(--c-border);border-radius:99px;flex:1;height:5px;overflow:hidden}.lib__meter-fill{background:var(--c-accent);border-radius:99px;height:100%;transition:width .24s;display:block}.lib__module{margin-bottom:20px}.lib__module-title{letter-spacing:.08em;text-transform:uppercase;color:var(--c-text-3);margin:0 0 8px;font-size:.7rem;font-weight:700}.lib__lessons{flex-direction:column;gap:1px;display:flex}.lib__lesson{color:var(--c-text-2);border-radius:9px;align-items:baseline;gap:9px;padding:7px 10px;font-size:.875rem;line-height:1.4;text-decoration:none;transition:background .16s,color .16s;display:flex}.lib__lesson:hover{background:var(--c-bg-card-hover,#0000000a);color:var(--c-text)}.lib__lesson--active{background:var(--c-surface,#0000000d);color:var(--c-text);font-weight:600}.lib__lesson--locked{color:var(--c-text-3);cursor:default}.lib__lesson--locked:hover{color:var(--c-text-3);background:0 0}.lib__lesson-mark{width:15px;color:var(--c-text-3);flex:none;font-size:.72rem}.lib__lesson--done .lib__lesson-mark{color:var(--c-accent)}.lib__main{min-width:0}.lib__crumb{letter-spacing:.06em;text-transform:uppercase;color:var(--c-text-3);margin-bottom:10px;font-size:.74rem}.lib__title{letter-spacing:-.02em;margin:0 0 12px;font-size:clamp(1.9rem,3.4vw,2.6rem);line-height:1.14}.lib__desc{color:var(--c-text-2);max-width:70ch;margin:0 0 16px;font-size:1.08rem;line-height:1.6}.lib__meta{color:var(--c-text-3);border-bottom:1px solid var(--c-border);align-items:center;gap:10px;margin-bottom:30px;padding-bottom:22px;font-size:.82rem;display:flex}.lib__cover{border:1px solid var(--c-border);border-radius:16px;margin-bottom:28px;overflow:hidden}.lib__cover img{width:100%;height:auto;display:block}.lib__prose{font-size:1.125rem;line-height:1.7}.lib__prose img{border-radius:12px;max-width:100%;height:auto;margin-inline:auto;display:block}.lib__gate{border:1px solid var(--c-border);background:var(--c-bg-card);text-align:center;border-radius:18px;margin-top:40px;padding:30px}.lib__gate h2{margin:0 0 8px;font-size:1.35rem}.lib__gate p{color:var(--c-text-2);max-width:52ch;margin:0 auto 18px}.lib__pager{border-top:1px solid var(--c-border);grid-template-columns:1fr 1fr;gap:14px;margin-top:52px;padding-top:26px;display:grid}.lib__pager-link{border:1px solid var(--c-border);color:var(--c-text);border-radius:14px;flex-direction:column;gap:4px;padding:15px 18px;text-decoration:none;transition:border-color .16s,transform .16s;display:flex}.lib__pager-link:hover{border-color:var(--c-accent);transform:translateY(-2px)}.lib__pager-link span{color:var(--c-text-3);font-size:.74rem}.lib__pager-link strong{font-size:.94rem;font-weight:600;line-height:1.35}.lib__pager-link--next{text-align:right}.lib-hub{max-width:1000px;margin:0 auto;padding:44px 24px 96px}.lib-hub__title{letter-spacing:-.02em;margin:0 0 12px;font-size:clamp(2rem,4vw,2.9rem);line-height:1.1}.lib-hub__desc{color:var(--c-text-2);max-width:62ch;margin:0 0 26px;font-size:1.1rem}.lib-hub__module{border:1px solid var(--c-border);background:var(--c-bg-card);border-radius:18px;margin-bottom:14px;padding:22px 24px}.lib-hub__module h2{margin:0 0 4px;font-size:1.12rem}.lib-hub__module p{color:var(--c-text-2);margin:0 0 14px;font-size:.92rem}.lib-hub__row{border-top:1px solid var(--c-border);color:var(--c-text);align-items:center;gap:12px;padding:10px 0;font-size:.95rem;text-decoration:none;display:flex}.lib-hub__row:hover{color:var(--c-accent)}.lib-hub__row--locked{color:var(--c-text-3)}.lib-hub__row-num{color:var(--c-text-3);min-width:22px;font-size:.78rem}.lib-hub__row-time{color:var(--c-text-3);margin-left:auto;font-size:.78rem}.lib-hub__badge{letter-spacing:.06em;text-transform:uppercase;background:var(--c-neon);color:var(--c-on-accent);border-radius:99px;padding:3px 8px;font-size:.68rem;font-weight:700;display:inline-block}@media (max-width:1080px){.lib__grid{grid-template-columns:minmax(0,1fr);gap:0}.lib__rail{display:none}.lib__mobile-nav{margin-bottom:24px;display:block}}@media (min-width:1081px){.lib__mobile-nav{display:none}}.lib__mobile-nav select{border:1px solid var(--c-border);background:var(--c-bg-card);width:100%;color:var(--c-text);border-radius:11px;padding:11px 13px;font-size:.92rem}@media (prefers-reduced-motion:reduce){.lib__pager-link:hover{transform:none}.lib__meter-fill{transition:none}}