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summary{align-items:center;color:var(--primary-hover);cursor:pointer;display:inline-flex;font-family:var(--font-d);font-size:.86rem;font-weight:700;gap:7px;list-style:none}.isr-topics summary::-webkit-details-marker{display:none}.isr-topics summary:after{border-bottom:2px solid;border-right:2px solid;content:"";height:7px;transform:rotate(45deg) translateY(-1px);transition:transform .2s ease;width:7px}.isr-topics[open] summary:after{transform:rotate(-135deg)}.isr-module__more{background:none;border:0;color:var(--primary-hover);cursor:pointer;display:inline-block;font-family:var(--font-d);font-size:.92rem;font-weight:700;margin:2px 0 0;padding:0}.isr-module__more:hover{text-decoration:underline}.gs--sims{max-width:640px;width:calc(100vw - 40px)}.gs--sims .gs__b{max-height:72vh;overflow-y:auto}.gs--sims .gs__field{color:var(--body);font-size:.98rem;line-height:1.55;margin:0 0 12px}.gs--sims .gs__field b{color:var(--ink);font-family:var(--font-d);font-weight:700}.gs--sims .gs__slab{color:var(--primary-hover);font-family:var(--font-d);font-size:.72rem;font-weight:700;letter-spacing:.07em;margin:16px 0 11px;text-transform:uppercase}.gs--sims .gs__skills{display:flex;flex-wrap:wrap;gap:8px;list-style:none;margin:0;padding:0}.gs--sims .gs__skills li{background:var(--panel);border:1px solid var(--rule);border-radius:999px;color:var(--ink);font-family:var(--font-d);font-size:.84rem;font-weight:700;padding:7px 14px}.isr-sims{display:grid;gap:15px;margin:16px 0 0;padding-left:1.35rem}.isr-sims>li,.isr-sims>li>b{color:var(--ink)}.isr-sims>li>b{display:block;font-family:var(--font-d);font-size:.95rem;font-weight:700;margin-bottom:5px}.isr-sims>li::marker{color:var(--primary);font-weight:800}.isr-sims ul{display:grid;gap:4px;list-style:disc;margin:0;padding-left:1rem}.isr-sims ul li{color:var(--body);font-size:.88rem;line-height:1.42}.isr-sims ul li::marker{color:var(--muted)}@media(prefers-reduced-motion:reduce){.isr-topics 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i{background:#ff5f57;border-radius:50%;flex:none;height:10px;width:10px}.isr-inbox__bar i:nth-child(2){background:#febc2e}.isr-inbox__bar i:nth-child(3){background:#28c840}.isr-inbox__bar span{margin-left:10px}.isr-inbox__body{display:grid;grid-template-columns:1fr}@media(min-width:780px){.isr-inbox__body{grid-template-columns:250px 1fr}}.isr-inbox__list{background:var(--panel);border-right:1px solid var(--rule);display:none;padding:8px}@media(min-width:780px){.isr-inbox__list{display:block}}.isr-inbox__msg{align-items:center;border-radius:9px;display:flex;gap:11px;padding:11px 12px}.isr-inbox__msg--on{background:#fff;box-shadow:0 2px 8px rgba(20,36,48,.08)}.isr-inbox__msg-t{display:flex;flex-direction:column;min-width:0}.isr-inbox__msg-t b{color:var(--ink);font-family:var(--font-d);font-size:.84rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.isr-inbox__msg--on .isr-inbox__msg-t b{color:var(--primary-hover)}.isr-inbox__msg-t span{color:var(--muted);font-size:.77rem}.isr-inbox__av{align-items:center;background:var(--av,#8895a4);border-radius:50%;color:#fff;display:flex;flex:none;font-family:var(--font-d);font-size:.72rem;font-weight:700;height:34px;justify-content:center;width:34px}.isr-inbox__av--lg{font-size:.86rem;height:44px;width:44px}.isr-inbox__read{padding:22px 24px}.isr-inbox__msg-head{align-items:center;display:flex;gap:13px;margin-bottom:15px}.isr-inbox__from{color:var(--ink);font-family:var(--font-d);font-size:1rem;font-weight:800;margin:0}.isr-inbox__from span{color:var(--muted);font-size:.9rem;font-weight:400;margin-left:6px}.isr-inbox__metaline{color:var(--muted);font-size:.8rem;margin:2px 0 0}.isr-inbox__q{color:var(--body);font-size:1rem;line-height:1.55;margin:0}.isr-inbox__prompt{color:var(--primary-hover);font-family:var(--font-d);font-size:.72rem;font-weight:700;letter-spacing:.07em;margin:20px 0 11px;text-transform:uppercase}.isr-inbox__opt{align-items:flex-start;background:#fff;border:1.5px solid var(--rule);border-radius:10px;color:var(--ink);display:flex;font-size:.93rem;gap:11px;line-height:1.4;margin:0 0 9px;padding:12px 14px}.isr-inbox__cb{border:2px solid #9aa6b2;border-radius:5px;flex:none;height:18px;margin-top:1px;width:18px}.isr-inbox__opt--pick{background:rgba(0,98,255,.05);border-color:var(--primary)}.isr-inbox__opt--pick .isr-inbox__cb{background:var(--primary);border-color:var(--primary);position:relative}.isr-inbox__opt--pick .isr-inbox__cb:after{border:solid #fff;border-width:0 2px 2px 0;content:"";height:9px;left:5px;position:absolute;top:1px;transform:rotate(45deg);width:4px}.isr-inbox__foot{margin-top:14px}.isr-inbox__respond{background:var(--primary);border-radius:8px;color:#fff;display:inline-block;font-family:var(--font-d);font-size:.86rem;font-weight:700;padding:9px 20px}.isr-inbox__cap{color:var(--muted);font-size:.84rem;font-style:italic;margin:15px 0 0;text-align:center}.isr-model__fig{align-items:stretch;display:grid;gap:18px;max-width:62rem}@media(min-width:860px){.isr-model__fig{grid-template-columns:1fr auto 1fr}}.isr-model__course,.isr-model__unit{background:#fff;border:1px solid var(--rule);border-radius:14px;box-shadow:0 10px 28px rgba(20,36,48,.06);padding:22px}.isr-model__lab{color:var(--muted);display:block;font-family:var(--font-d);font-size:.68rem;font-weight:700;letter-spacing:.09em;margin-bottom:14px;text-transform:uppercase}.isr-model__sims{display:grid;gap:8px;grid-template-columns:repeat(4,1fr)}.isr-model__sims span{background:var(--panel);border:1px solid var(--rule);border-radius:8px;color:var(--primary-hover);font-size:.76rem;padding:12px 4px;text-align:center}.isr-model__arrow,.isr-model__sims span{font-family:var(--font-d);font-weight:700}.isr-model__arrow{align-items:center;color:var(--muted);display:flex;font-size:.74rem;gap:8px;justify-content:center;letter-spacing:.06em;text-transform:uppercase}.isr-model__arrow:before{color:var(--primary);content:"\2193";font-size:1.5rem}@media(min-width:860px){.isr-model__arrow{flex-direction:column}.isr-model__arrow:before{content:"\2192"}}.isr-model__attrs{display:grid;gap:12px;grid-template-columns:repeat(3,1fr);text-align:center}.isr-model__attrs div{color:var(--body);display:flex;flex-direction:column;font-size:.8rem;gap:3px;line-height:1.25}.isr-model__attrs b{color:var(--primary);font-family:var(--font-d);font-size:1.5rem;font-weight:900;line-height:1}.isr-model__cap{color:var(--muted);font-size:.84rem;margin:16px 0 0}.isr-feat{display:grid;gap:14px 26px;grid-template-columns:1fr;list-style:none;margin:0;max-width:52rem;padding:0}@media(min-width:620px){.isr-feat{grid-template-columns:repeat(2,1fr)}}.isr-feat li{align-items:flex-start;color:var(--body);display:flex;font-size:1.02rem;gap:11px;line-height:1.4}.isr-feat li:before{color:var(--green-bright);content:"\2713";flex:none;font-weight:800;line-height:1.4}.isr-siblings{display:grid;gap:16px;grid-template-columns:1fr}@media(min-width:640px){.isr-siblings{grid-template-columns:repeat(2,1fr)}}.isr-sibling{background:#fff;border:1px solid var(--rule);border-radius:var(--radius);box-shadow:0 8px 22px rgba(20,36,48,.06);display:block;padding:22px 24px;text-decoration:none;transition:box-shadow .18s ease,transform .18s ease}.isr-sibling:hover{box-shadow:0 16px 40px rgba(20,36,48,.12);transform:translateY(-2px)}.isr-sibling b{color:var(--ink);display:block;font-family:var(--font-d);font-size:1.08rem;font-weight:800;margin-bottom:5px}.isr-sibling span{color:var(--body);display:block;font-size:.96rem;line-height:1.45}.isr-sibling .isr-sibling__go{color:var(--primary-hover);display:block;font-family:var(--font-d);font-size:.92rem;font-weight:800;margin-top:10px}.isr-cta{background:radial-gradient(90% 120% at 50% -10%,rgba(97,185,70,.18),transparent 55%),linear-gradient(180deg,var(--dark-800),var(--dark-900));text-align:center}.isr-cta h2{font-size:clamp(1.6rem,3vw,2.3rem);letter-spacing:-.015em;line-height:1.12;margin:0}.isr-cta__sub{color:var(--on-dark-muted);font-size:1.08rem;line-height:1.55;margin:16px auto 26px;max-width:40em}.isr-cta__act{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}