:root{--bg: #f5f5fb;--surface: #ffffff;--surface-2: #ecebfa;--text: #16152b;--muted: #6b6a82;--border: #e6e5f0;--primary: #4a47a7;--primary-soft: #ecebfa;--hat: #6163ff;--accent: #16a394;--warn: #c77700;--hero: #1c1a4f;--hero-2: #2b2970;--radius: 18px;--shadow: 0 1px 2px rgba(31, 27, 92, .05), 0 8px 24px rgba(31, 27, 92, .07);--shadow-lift: 0 2px 4px rgba(31, 27, 92, .06), 0 18px 40px rgba(31, 27, 92, .14);--ease: cubic-bezier(.22, 1, .36, 1);color-scheme:light}@media (prefers-color-scheme: dark){:root{--bg: #0f0f1a;--surface: #1a1a2b;--surface-2: #26244a;--text: #eeedf7;--muted: #a3a2bc;--border: #2b2a42;--primary: #a5a2ff;--primary-soft: #26244a;--accent: #4ed1c1;--warn: #ffb547;--shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);--shadow-lift: 0 2px 4px rgba(0, 0, 0, .3), 0 18px 40px rgba(0, 0, 0, .45);color-scheme:dark}}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 Plus Jakarta 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#ffffffb3}.icon-btn{background:none;border:0;color:var(--muted);padding:6px;border-radius:8px}.icon-btn:hover{color:var(--text);background:var(--surface-2)}.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--hero) 92%,transparent);backdrop-filter:saturate(160%) blur(12px);-webkit-backdrop-filter:saturate(160%) blur(12px);color:#fff;transition:box-shadow .3s,background .3s}.site-header.on-hero:not(.is-scrolled){background:transparent;backdrop-filter:none;-webkit-backdrop-filter:none;position:absolute;left:0;right:0}.site-header.is-scrolled{box-shadow:0 6px 24px #0000002e}.header-row{display:flex;align-items:center;justify-content:space-between;height:66px;gap:16px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;font-size:1.08rem;white-space:nowrap}.brand-mark{width:36px;height:36px;border-radius:11px;background:#000;color:var(--hat);display:grid;place-items:center;box-shadow:0 4px 14px #6163ff59;transition:transform .4s var(--ease)}.brand:hover .brand-mark{transform:rotate(-8deg) scale(1.06)}.nav{display:flex;align-items:center;gap:4px}.nav-link{padding:8px 14px;border-radius:999px;font-weight:600;color:#ffffffd9;position:relative;transition:color .2s,background .2s}.nav-link:hover{color:#fff;background:#ffffff1a}.nav-link.active{color:#fff;background:#ffffff29}.nav-cta{margin-left:8px;background:#fff;color:#2b2970}.menu-btn{display:none;width:42px;height:42px;border-radius:12px;border:0;background:#ffffff1f;position:relative}.menu-btn span{position:absolute;left:11px;right:11px;height:2px;background:#fff;border-radius:2px;transition:transform .3s var(--ease)}.menu-btn span:first-child{top:16px}.menu-btn span:last-child{top:24px}.menu-btn[aria-expanded=true] span:first-child{transform:translateY(4px) rotate(45deg)}.menu-btn[aria-expanded=true] span:last-child{transform:translateY(-4px) rotate(-45deg)}@media (max-width: 860px){.menu-btn{display:block}.nav{position:absolute;top:66px;left:12px;right:12px;flex-direction:column;align-items:stretch;background:var(--hero);border-radius:18px;padding:10px;box-shadow:0 20px 50px #00000059;opacity:0;transform:translateY(-8px) scale(.98);pointer-events:none;transition:opacity .25s,transform .3s var(--ease)}.nav.is-open{opacity:1;transform:none;pointer-events:auto}.nav-link{padding:12px 14px}.nav-cta{margin:6px 0 0}}.hero,.page-hero{position:relative;overflow:hidden;color:#fff;background:radial-gradient(1200px 600px at 80% -10%,#3b3890 0%,transparent 60%),linear-gradient(160deg,var(--hero-2),var(--hero) 70%)}.hero{padding:130px 0 90px}.page-hero{padding:48px 0 56px}.hero-row{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center;position:relative}.page-hero-row{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;position:relative}.page-hero-art img{width:min(260px,32vw);border-radius:22px;box-shadow:0 20px 50px #00000059}.eyebrow{text-transform:uppercase;letter-spacing:.12em;font-size:.78rem;font-weight:700;color:#ffffffb8;margin-bottom:12px}.lead{font-size:1.12rem;color:#ffffffd1;max-width:560px}.grad{background:linear-gradient(90deg,#a5a2ff,#4ed1c1,#a5a2ff);background-size:200% auto;-webkit-background-clip:text;background-clip:text;color:transparent;animation:shine 6s linear infinite}.hero-ctas{display:flex;gap:12px;flex-wrap:wrap;margin:26px 0 8px}.notice{margin-top:18px;display:inline-flex;gap:8px;padding:10px 14px;border-radius:12px;background:#00000040}.stats{display:flex;gap:32px;flex-wrap:wrap;margin-top:34px}.stats b{display:block;font-size:1.9rem;font-weight:800;font-variant-numeric:tabular-nums}.stats span{color:#ffffffb3;font-size:.9rem}.crumb{color:#fffc;font-weight:600;letter-spacing:0;text-transform:none;font-size:.95rem}.crumb:hover{color:#fff}.as-link{background:none;border:0;padding:0}.hero-blobs 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var(--border)}.section-title{margin-bottom:26px}.section-title.spaced{margin-top:56px}.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}.cards.three{grid-template-columns:repeat(3,1fr)}@media (max-width: 1000px){.cards{grid-template-columns:repeat(2,1fr)}}@media (max-width: 640px){.cards.three{grid-template-columns:1fr}.cards{grid-template-columns:1fr 1fr;gap:12px}.cards .card-img{aspect-ratio:4 / 3}.cards .card-body{padding:12px 14px 14px}.cards .card-body h3{font-size:.98rem;margin:0}.cards .card-body p{display:none}}.card{display:flex;flex-direction:column;height:100%;background:var(--surface);border-radius:22px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--border);transition:transform .35s var(--ease),box-shadow .35s var(--ease)}.card.pad{padding:22px}.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lift)}.card-img{aspect-ratio:16 / 10;overflow:hidden;background:var(--surface-2)}.card-img 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.course-tile{background:var(--surface);box-shadow:var(--shadow)}.course-tile:hover{transform:translateY(-3px);border-color:var(--primary);box-shadow:var(--shadow-lift)}.course-tile b{display:block}.course-tile small{display:block;font-size:.85rem}.course-tile .row-go{margin-left:auto}.course-ico{width:48px;height:48px;flex:none;border-radius:14px;display:grid;place-items:center;font-size:1.5rem;background:linear-gradient(135deg,#4ed1c1,#2fb3a3);box-shadow:0 6px 16px #2fb3a359}.features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}@media (max-width: 1000px){.features{grid-template-columns:repeat(2,1fr)}}@media (max-width: 520px){.features{grid-template-columns:1fr}}.feature{padding:22px;border-radius:20px;background:var(--surface);border:1px solid 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.lead{margin-inline:auto}.hero-center .search-form{width:100%;max-width:640px}.hero-meta{margin:18px 0 0;color:#ffffffb8;font-size:.95rem}.hero-meta b{color:#fff;font-variant-numeric:tabular-nums}.hero-meta a{color:#fff;font-weight:600;text-decoration:underline;text-decoration-color:#ffffff59;text-underline-offset:3px}.hero-meta a:hover{text-decoration-color:#fff}@media (max-width: 860px){.hero-clean{padding:104px 0 56px}}.store-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px}.store-label{width:100%;font-size:.78rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#fff9}.store-btn{display:inline-flex;align-items:center;gap:9px;padding:7px 14px 7px 10px;border-radius:12px;background:#000;color:#fff;border:1px solid rgba(255,255,255,.22);line-height:1.1;transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s}.store-btn:hover{transform:translateY(-2px);border-color:#ffffff80;box-shadow:0 10px 26px #00000059}.store-btn svg{width:22px;height:22px;flex:none}.store-btn span{display:grid;font-weight:700;font-size:.95rem}.store-btn small{font-size:.66rem;font-weight:500;opacity:.8;letter-spacing:.02em}.store-btn.is-soon{opacity:.6;cursor:default}.store-btn.is-soon:hover{transform:none;box-shadow:none;border-color:#ffffff38}.store-btn.tg{background:#229ed929;border-color:#229ed980}.site-header.on-hero:not(.is-scrolled)+main .hero{padding-top:112px}.search-form{display:flex;align-items:center;gap:10px;padding:6px 6px 6px 18px;border-radius:999px;background:#fff;color:#16152b;box-shadow:0 20px 50px #00000040;max-width:620px;margin-top:22px;transition:box-shadow .3s,transform .3s var(--ease)}.search-form:focus-within{box-shadow:0 0 0 4px #a5a2ff73,0 20px 50px #00000040;transform:translateY(-1px)}.search-form input{flex:1;min-width:0;border:0;outline:none;background:none;color:#16152b;padding:12px 0;font-size:1rem}.search-form.big input{font-size:1.05rem;padding:14px 0}.search-form .btn{flex:none}@media (max-width: 520px){.search-form{padding-left:14px}.search-form .btn{padding:10px 14px}.search-form input::placeholder{font-size:.85rem}}.quick-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}.quick-chip{padding:7px 14px;border-radius:999px;background:#ffffff1f;border:1px solid rgba(255,255,255,.18);font-weight:600;font-size:.9rem;transition:background .2s,transform .2s var(--ease)}.quick-chip:hover{background:#ffffff38;transform:translateY(-2px)}.shelf-section{padding-bottom:24px}.shelf-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:18px}.shelf-head .section-title{margin:0}.shelf-head .card-cta{color:var(--primary)}.shelf{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:4px max(16px,calc((100% - 1160px)/2)) 18px;scrollbar-width:none}.shelf::-webkit-scrollbar{display:none}.shelf-card{flex:none;width:220px;scroll-snap-align:start;text-align:left;display:grid;gap:6px;padding:16px;border-radius:18px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .3s var(--ease),box-shadow .3s var(--ease);animation:rowIn .5s var(--ease) both;animation-delay:calc(var(--i) * 50ms)}.shelf-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lift)}.shelf-card b{line-height:1.3}.shelf-date{justify-self:start;font-size:.75rem;font-weight:800;letter-spacing:.04em;padding:3px 9px;border-radius:999px;background:var(--primary-soft);color:var(--primary)}.subject-index{margin-top:48px;padding-top:28px;border-top:1px solid var(--border)}.subject-index h2{font-size:1.25rem}.subject-index ul{list-style:none;padding:0;margin:0;columns:2 260px;column-gap:28px}.subject-index li{break-inside:avoid;padding:5px 0}.subject-index a{font-weight:600;color:var(--primary)}.subject-index a:hover{text-decoration:underline}.group-title a{color:inherit}.group-title a:hover{color:var(--primary)}.seo-list{padding-left:18px}.seo-list li{padding:3px 0}.toolbar{position:sticky;top:66px;z-index:5;background:var(--bg);padding:12px 0 14px;margin-bottom:6px}.search{display:flex;align-items:center;gap:10px;padding:0 16px;border-radius:16px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);transition:border-color .2s,box-shadow .2s}.search:focus-within{border-color:var(--hat);box-shadow:0 0 0 4px color-mix(in srgb,var(--hat) 18%,transparent)}.search input{flex:1;border:0;background:none;padding:14px 0;outline:none;min-width:0}.toolbar-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:12px;flex-wrap:wrap}.count{color:var(--muted);font-weight:600;font-size:.92rem}.toolbar-actions{display:flex;gap:8px;align-items:center}.segmented{display:inline-flex;padding:3px;border-radius:999px;background:var(--surface);border:1px solid var(--border)}.segmented button{border:0;background:none;padding:6px 14px;border-radius:999px;font-weight:700;font-size:.88rem;transition:background .25s,color .25s}.segmented button.on{background:var(--primary);color:#fff}@media (prefers-color-scheme: dark){.segmented button.on{color:#16152b}}.select{padding:8px 12px;border-radius:999px;border:1px solid var(--border);background:var(--surface);font-weight:700;font-size:.88rem}.chips{display:flex;gap:8px;overflow-x:auto;padding:12px 2px 2px;scrollbar-width:none}.chips::-webkit-scrollbar{display:none}.chip{flex:none;padding:7px 14px;border-radius:999px;border:1px solid var(--border);background:var(--surface);font-weight:700;font-size:.88rem;transition:background .2s,color .2s,transform .2s var(--ease)}.chip:hover{transform:translateY(-1px)}.chip.on{background:var(--primary);border-color:var(--primary);color:#fff}@media (prefers-color-scheme: dark){.chip.on{color:#16152b}}.rows{display:grid;gap:10px}.row{display:flex;align-items:center;gap:14px;width:100%;padding:12px;text-align:left;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .25s var(--ease),box-shadow .25s var(--ease),border-color .25s;animation:rowIn .45s var(--ease) both;animation-delay:calc(var(--i, 0) * 28ms)}.row:hover{transform:translateY(-2px);box-shadow:var(--shadow-lift);border-color:color-mix(in srgb,var(--tint, var(--primary)) 45%,var(--border))}.row.is-unavailable{opacity:.6}.tile{width:56px;height:56px;flex:none;border-radius:16px;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--tint, var(--primary));background:color-mix(in srgb,var(--tint, var(--primary)) 13%,var(--surface));line-height:1.05}.tile small{font-size:.68rem;font-weight:800;letter-spacing:.08em}.tile b{font-size:1.05rem;font-weight:800}.tile-init{font-size:.95rem;letter-spacing:.04em}.tile-ico{font-size:1.4rem}@media (prefers-color-scheme: dark){.tile{color:color-mix(in srgb,var(--tint) 55%,#fff);background:color-mix(in srgb,var(--tint) 28%,var(--surface))}}.row-body{flex:1;min-width:0;display:grid;gap:6px}.row-title{font-weight:700;font-size:1rem;line-height:1.3}.pills{display:flex;flex-wrap:wrap;gap:6px}.pill{font-size:.72rem;font-weight:700;padding:3px 8px;border-radius:6px;background:var(--bg);color:var(--muted)}.pill-accent{background:color-mix(in srgb,var(--accent) 14%,var(--surface));color:var(--accent)}.pill-warn{background:color-mix(in srgb,var(--warn) 16%,var(--surface));color:var(--warn)}.row-go{color:var(--muted);font-size:1.2rem;padding:0 8px;transition:transform .25s var(--ease),color .25s}.row:hover .row-go,.course-tile:hover .row-go{transform:translate(4px);color:var(--primary)}.groups{display:grid;gap:26px}.group-title{display:flex;align-items:center;gap:10px;border-left:4px solid var(--primary);padding-left:10px;margin-bottom:4px}.group-count{font-size:.8rem;padding:2px 9px;border-radius:999px;background:var(--primary-soft);color:var(--primary)}.group .rows{margin-top:10px}.skeleton{animation:none}.skeleton .tile,.sk-line{background:linear-gradient(90deg,var(--surface-2) 25%,var(--border) 50%,var(--surface-2) 75%);background-size:200% 100%;animation:shimmer 1.3s linear infinite}.sk-line{display:block;height:13px;border-radius:7px}.sk-line.short{width:40%;height:10px}.empty{text-align:center;padding:56px 16px}.empty-icon{font-size:2.6rem;margin-bottom:8px;animation:float 5s ease-in-out infinite}.viewer{display:flex;flex-direction:column;height:calc(100dvh - 66px)}.viewer-bar{display:flex;align-items:center;gap:12px;padding:10px 0}.viewer-title{flex:1;font-size:1.05rem;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.viewer-frame{position:relative;flex:1;background:var(--surface-2)}.viewer-frame iframe,.folder-frame iframe{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;border:0}.viewer-loading{position:absolute;top:0;right:0;bottom:0;left:0;display:grid;place-content:center;gap:10px;justify-items:center;color:var(--muted)}.viewer-loading.static{position:static;padding:60px 0}.spinner{width:34px;height:34px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--hat);animation:spin .8s linear infinite}.folder-frame{position:relative;height:min(70vh,720px);border-radius:20px;overflow:hidden;background:#fff;border:1px solid var(--border);box-shadow:var(--shadow)}.tools{display:grid;grid-template-columns:1.3fr 1fr;gap:20px;align-items:start}@media (max-width: 900px){.tools{grid-template-columns:1fr}}.panel{padding:24px;border-radius:22px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow);display:grid;gap:12px}.big-number{font-size:3.2rem;font-weight:800;color:var(--primary);text-align:center;font-variant-numeric:tabular-nums;line-height:1;margin-top:4px}.big-number.good{color:var(--accent)}.big-number.bad{color:#d93b3b}.subject-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap;padding:10px 0;border-top:1px solid var(--border)}.subject-row>.muted{min-width:76px;font-weight:600}.stepper{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--border);border-radius:999px;padding:2px}.stepper button{width:30px;height:30px;border-radius:50%;border:0;background:none;font-weight:800;color:var(--primary)}.stepper button:hover{background:var(--surface-2)}.stepper span{min-width:46px;text-align:center;font-weight:700;font-size:.9rem}.grades{display:flex;gap:4px;flex:1;min-width:240px}.grades button{flex:1;padding:6px 0;border-radius:10px;border:1px solid var(--border);background:none;font-weight:800;font-size:.85rem;transition:background .2s,color .2s,transform .2s var(--ease)}.grades button:hover{transform:translateY(-1px)}.grades button.on{background:var(--primary);border-color:var(--primary);color:#fff}@media (prefers-color-scheme: dark){.grades button.on{color:#16152b}}.fields{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}@media (max-width: 520px){.fields{grid-template-columns:1fr}}.fields label{display:grid;gap:4px;font-size:.82rem;color:var(--muted);font-weight:600}.fields input{padding:11px 12px;border-radius:12px;border:1px solid var(--border);background:var(--bg);color:var(--text);font-size:1rem}.fields input:focus{outline:none;border-color:var(--hat)}.site-footer{margin-top:32px;padding:48px 0 28px;background:var(--hero);color:#ffffffd1}.site-footer .muted{color:#fff9;max-width:340px}.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:28px}@media (max-width: 760px){.footer-grid{grid-template-columns:1fr}}.footer-brand{color:#fff;margin-bottom:12px}.footer-links{display:grid;gap:8px;align-content:start}.footer-links a:hover{color:#fff}.footer-note{margin-top:32px;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);font-size:.82rem;color:#ffffff8c}.page{animation:pageIn .5s var(--ease) both}.fade-up{animation:fadeUp .8s var(--ease) both;animation-delay:var(--delay, 0ms)}.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s var(--ease),transform .7s var(--ease);transition-delay:var(--delay, 0ms)}.reveal.is-in{opacity:1;transform:none}@keyframes pageIn{0%{opacity:0}to{opacity:1}}@keyframes fadeUp{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}@keyframes rowIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-12px)}}@keyframes drift{0%{transform:translate(0) scale(1)}to{transform:translate(-40px,30px) scale(1.12)}}@keyframes shine{to{background-position:200% center}}@keyframes pan{0%{background-position:0% 50%}to{background-position:100% 50%}}@keyframes shimmer{to{background-position:-200% 0}}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.reveal{opacity:1;transform:none}}