@font-face{font-family:Manrope Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(data:font/woff2;base64,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)format("woff2-variations");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Manrope Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/manrope-cyrillic-wght-normal-Dvxsihut.woff2)format("woff2-variations");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Manrope Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/manrope-greek-wght-normal-DL7QRZyv.woff2)format("woff2-variations");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Manrope Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/manrope-vietnamese-wght-normal-usUDDRr7.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Manrope Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/manrope-latin-ext-wght-normal-Ch3YOpNY.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Manrope Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/manrope-latin-wght-normal-DHIcAJRg.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--bg:#f4f5f8;--card:#fff;--text:#14161c;--muted:#5d6472;--accent:#2154f5;--accent-2:#12b886;--accent-text:#fff;--ok:#22a06b;--half:#e2a400;--bad:#d64545;--border:#e4e7ee;--soft:#eef3ff;--field:#f2f4f8;--dark:#0d1530;--dark-muted:#b8c2dc;--hero:linear-gradient(135deg, #fff 0%, #eef3ff 60%, #e6fbf3 100%);--brand:linear-gradient(120deg, var(--accent), #5b7cff 70%, #12b886);--container:1240px;--narrow:760px;--gutter:16px;--r-sm:14px;--r-md:24px;--r-lg:32px;--shadow-sm:0 2px 8px #0000000a;--shadow:0 10px 30px #14161c0d;--header-h:64px;color:var(--text);background:var(--bg);font-family:Manrope Variable,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}@media (width<=700px){:root{--header-h:100px}}@media (width>=700px){:root{--gutter:24px}}@media (width>=1200px){:root{--gutter:32px}}@media (width>=1680px){:root{--container:1440px}}*{box-sizing:border-box}body{background:var(--bg);flex-direction:column;min-height:100vh;margin:0;display:flex;overflow-x:clip}#root{flex-direction:column;flex:1;display:flex}.site-footer{margin-top:auto}a{color:var(--accent)}h1{letter-spacing:-.02em;margin:.5em 0 .25em;font-size:clamp(2rem,4vw,3rem);font-weight:800;line-height:1.08}h2{letter-spacing:-.01em;margin:1.6em 0 .6em;font-size:1.5rem;font-weight:800}.lead{color:var(--muted);margin:0 0 24px;font-size:1.15rem}.topbar{--pad:max(var(--gutter), (100% - var(--container)) / 2);padding:12px var(--pad);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);z-index:10;background:#f4f5f8d9;align-items:center;gap:12px 24px;min-height:64px;display:flex;position:sticky;top:0}.topbar nav.main{align-items:center;gap:24px;margin-left:auto;display:flex}.topbar a,.topbar .linklike{color:var(--text);font-weight:600;text-decoration:none}.topbar a:hover,.topbar .linklike:hover,.topbar a.active{color:var(--accent)}.logo{color:var(--text);letter-spacing:-.01em;align-items:center;gap:8px;font-size:1.15rem;font-weight:800;display:flex}.topbar a.logo{color:var(--text)}.page{width:min(100% - 2 * var(--gutter), var(--container));margin:0 auto;padding-bottom:64px}.page.narrow,.page.doc{max-width:var(--narrow)}.muted{color:var(--muted)}.back{color:var(--muted);margin-top:16px;font-weight:600;text-decoration:none;display:inline-block}.back:hover{color:var(--accent)}.card{background:var(--card);border-radius:var(--r-md);box-shadow:var(--shadow);margin:16px 0;padding:24px}.doc{line-height:1.6}.doc h2{margin:1.6em 0 .4em;font-size:1.2rem}.doc ul{padding-left:1.2em}.doc li{margin:4px 0}.placeholder{color:var(--muted);text-align:center;border:2px dashed var(--border);box-shadow:none;background:0 0;padding:40px 16px}.row{flex-wrap:wrap;gap:10px;display:flex}.chip{color:var(--muted);box-shadow:var(--shadow-sm);background:#fff;border-radius:999px;align-items:center;gap:6px;padding:6px 14px;font-size:.85rem;font-weight:600;display:inline-flex}.btn,.pill{background:var(--accent);color:var(--accent-text);font:inherit;cursor:pointer;white-space:nowrap;border:2px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:12px 24px;font-size:1rem;font-weight:700;line-height:1.2;text-decoration:none;transition:transform .15s,box-shadow .15s,background .15s;display:inline-flex}.btn:hover:not(:disabled),.pill:hover{transform:translateY(-1px);box-shadow:0 8px 24px #2154f52e}.btn:disabled{opacity:.4;cursor:default}.btn.secondary,.pill.outline{color:var(--text);border-color:var(--text);background:0 0}.pill.light{color:var(--accent);background:#fff}.btn.small{padding:8px 18px;font-size:.9rem}.big-btn,.pill{padding:16px 32px;font-size:1.05rem}.pill.wide{width:100%}input,select{font:inherit;background:var(--field);color:var(--text);outline-color:var(--accent);border:0;border-radius:14px;padding:14px 18px}select{appearance:none;box-shadow:var(--shadow-sm);cursor:pointer;background:#fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' fill='none' stroke='%2314161c' stroke-width='2'/%3E%3C/svg%3E") right 16px center/12px no-repeat;border-radius:999px;padding-right:40px;font-weight:600}.filters{flex-wrap:wrap;gap:10px;margin-bottom:8px;display:flex}.filters select{flex:220px;min-width:0}.split{align-items:start;gap:0 32px;display:grid}.split>*{min-width:0}@media (width>=1100px){.split{grid-template-columns:320px minmax(0,1fr)}.split>aside{top:var(--header-h);padding-top:16px;position:sticky}.split .filters{flex-direction:column}.split .filters select{flex:none;width:100%}.split.skill{grid-template-columns:1fr;max-width:880px}.exam-run{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:0 32px;display:grid}.exam-run>.card{grid-area:1/1/span 3}.exam-run>:not(.card){grid-column:2}.exam-run .exam-bar{margin-top:16px}.exam-run .grid{top:calc(var(--header-h) + 80px);grid-template-columns:repeat(5,1fr);position:sticky}}.task-meta{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.task-meta span{background:var(--soft);color:var(--accent);border-radius:999px;padding:4px 12px;font-size:.8rem;font-weight:700}.check-row{flex-wrap:wrap;align-items:center;gap:12px 16px;display:flex}.verdict{border-radius:999px;padding:10px 18px;font-weight:700}.verdict.ok{color:#0c7a52;background:#d9f6ea}.verdict.bad{color:#a62b2b;background:#ffe1e1}.task-body{font-size:1.05rem;line-height:1.6;overflow-x:auto}.task-body img,.options img{max-width:100%;height:auto}.task-body table{border-collapse:collapse}.task-body td{vertical-align:top;padding:2px 6px}.task-body table[align=right]{margin:0 0 12px 20px}.task-body table[align=left]{margin:0 20px 12px 0}@media (width<=600px){.task-body table[align]{float:none;margin:0 auto 12px}}.options{padding-left:0;list-style:none}.options li{margin:8px 0}.options label{background:var(--field);border-radius:14px;padding:12px 14px}.options label:has(input:checked){background:var(--soft);outline:2px solid var(--accent)}.options label{cursor:pointer;align-items:flex-start;gap:10px;display:flex}.options p{margin:0}.answer{flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0;display:flex}.answer input{flex:9em;min-width:9em;max-width:260px;font-size:1.1rem}.answer .pm{flex:11em;align-items:center;gap:10px;max-width:290px;display:flex}.match{flex-wrap:wrap;gap:12px;margin:12px 0;display:flex}.match label{flex-direction:column;align-items:center;gap:4px;font-weight:700;display:flex}.match input{text-align:center;width:48px;font-size:1.1rem}.mindmap{background:var(--card);width:100%;height:calc(100vh - 230px);min-height:460px;box-shadow:var(--shadow);color:var(--text);border-radius:28px}svg.radial{height:calc(100vh - 150px);min-height:560px;fill:var(--text);touch-action:none;cursor:grab;-webkit-user-select:none;user-select:none;font-family:Manrope Variable,system-ui,sans-serif;font-weight:600}svg.radial .edges line{stroke-width:2px;opacity:.25}svg.radial .ring-track{fill:none;stroke:#eceff4;stroke-width:5px}svg.radial .ring-fill{fill:none;stroke-width:5px;stroke-linecap:round}svg.radial .core{fill:var(--accent)}svg.radial .core-title{fill:#fff;font-size:20px;font-weight:800}svg.radial .core-pct{fill:#fff;font-size:26px;font-weight:800}svg.radial .part text{font-weight:800}svg.radial .topic{cursor:pointer;outline:none;transition:opacity .3s}svg.radial .topic-core{fill:#fff;stroke-width:2px;transition:fill .2s}svg.radial .topic:hover .topic-core,svg.radial .topic:focus-visible .topic-core,svg.radial .topic.open .topic-core{fill:var(--soft)}svg.radial .topic tspan:last-child{fill:var(--muted);font-size:12px}svg.radial .topic.dim{opacity:.45}svg.radial .leaves path{fill:none;stroke-width:1.5px;opacity:.35;stroke-dasharray:1;stroke-dashoffset:1px;animation:.4s ease-out forwards draw;animation-delay:calc(var(--i) * 15ms)}svg.radial .leaf{cursor:pointer;opacity:0;animation:.3s ease-out forwards appear;animation-delay:calc(.12s + var(--i) * 15ms)}svg.radial .leaf:hover text{fill:var(--accent)}svg.radial .leaf-id,.leaf-list .leaf-id{fill:var(--muted);color:var(--muted);font-weight:700}svg.radial .badge rect{fill:none;stroke-width:2px}svg.radial .b0 rect{stroke:#9aa4b2}svg.radial .b1 rect{stroke:#e7943a}svg.radial .b2 rect{stroke:#9b7cf0}svg.radial .b2 rect.half{fill:#9b7cf0}svg.radial .b3 rect{stroke:#7b4fe0;fill:#7b4fe0}svg.radial .b4 rect{stroke:#c9b8ff;fill:#4b22b8}@keyframes draw{to{stroke-dashoffset:0}}@keyframes appear{to{opacity:1}}@media (prefers-reduced-motion:reduce){svg.radial .leaves path,svg.radial .leaf{animation-duration:1ms;animation-delay:0s}}@media (width<=700px){svg.radial{height:92vw;min-height:0}svg.radial .topic>text,svg.radial .part>text:last-child{display:none}}.topic-list{flex-direction:column;gap:20px;margin-top:20px;display:flex}.topic-list section{flex-direction:column;gap:8px;display:flex}.topic-list h3{margin:0 0 4px;font-size:1.1rem}.topic-row{background:var(--card);border-radius:var(--r-md);box-shadow:var(--shadow);overflow:hidden}.topic-row.open{outline:2px solid var(--c)}.topic-row button{width:100%;font:inherit;color:var(--text);text-align:left;cursor:pointer;background:0 0;border:0;grid-template-columns:auto 1fr auto;align-items:center;gap:6px 12px;padding:14px 16px;font-weight:700;display:grid}.t-icon{grid-row:span 2}.t-core{fill:color-mix(in srgb, var(--c) 8%, #fff);stroke:var(--c);stroke-width:2px}.topic-list h3 .dot{background:var(--c);vertical-align:1px;border-radius:50%;width:10px;height:10px;margin-right:4px;display:inline-block}.t-bar{background:var(--field);border-radius:3px;grid-column:2/-1;height:6px;overflow:hidden}.t-bar i{background:var(--c);border-radius:3px;height:100%;display:block}.leaf-list{flex-direction:column;gap:12px;padding:4px 16px 16px;display:flex}.leaf-list a{color:var(--text);align-items:baseline;gap:8px;line-height:1.35;text-decoration:none;display:flex}.video{border-radius:24px;padding-top:56.25%;position:relative;overflow:hidden;box-shadow:0 10px 30px #14161c14}.video iframe,.video video{background:#000;border:0;width:100%;height:100%;position:absolute;inset:0}.video.locked{background:linear-gradient(135deg, var(--bg), var(--border));box-shadow:none}.video.locked>div{color:var(--muted);flex-direction:column;justify-content:center;align-items:center;gap:8px;font-weight:700;display:flex;position:absolute;inset:0}.video.locked .lock{font-size:40px}svg.radial .leaf-video,.leaf-list .leaf-video{fill:var(--accent);color:var(--accent);font-size:.8em}.admin-videos table{border-collapse:collapse;width:100%}.admin-videos td{border-bottom:1px solid var(--border);vertical-align:top;padding:6px 8px}.admin-videos tr.section td{border-bottom:0;padding-top:20px;font-weight:700}.admin-videos .video-cell{white-space:nowrap;width:1%}.admin-videos .video-cell .row{flex-wrap:nowrap;align-items:center}.admin-videos .btn{padding:8px 16px}.admin-videos .note{margin-top:4px;font-size:.85em}.admin-videos .note.err{color:var(--bad)}.exam-bar{top:var(--header-h);z-index:5;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#f4f5f8e6;justify-content:space-between;align-items:center;margin:12px 0;padding:8px 0;display:flex;position:sticky}.timer{font-variant-numeric:tabular-nums;background:#fff;border-radius:999px;padding:10px 20px;font-size:1.2rem;font-weight:800;box-shadow:0 2px 8px #0000000d}.timer.warn{color:#fff;background:var(--bad)}.exam-img{border-radius:12px;width:100%;height:auto}.grid{grid-template-columns:repeat(10,1fr);gap:8px;margin:12px 0;display:grid}.cell{aspect-ratio:1;background:var(--card);color:var(--text);font:inherit;cursor:pointer;box-shadow:var(--shadow-sm);border:0;border-radius:14px;flex-direction:column;justify-content:center;align-items:center;padding:0;font-weight:700;display:flex}.cell span{font-size:.75rem;font-weight:600}.cell.done{background:var(--soft);color:var(--accent)}.cell.current{background:var(--accent);color:#fff}.cell.ok{color:#0c7a52;background:#d9f6ea}.cell.half{color:#8a6200;background:#fff1cc}.cell.bad{color:#a62b2b;background:#ffe1e1}.hero-card{border-radius:var(--r-lg);background:var(--hero);margin:16px 0;padding:40px}.hero-card h1{margin-top:0}.score{text-align:center;background:var(--brand);color:#fff}.score .muted{color:#ffffffd9}.big{letter-spacing:-.03em;font-size:4rem;font-weight:800}.big span{opacity:.85;font-size:1.4rem;font-weight:600}.form{flex-direction:column;gap:10px;display:flex}.consent{align-items:flex-start;gap:8px;font-size:.9rem;display:flex}@media (width<=600px){.grid{grid-template-columns:repeat(5,1fr)}.topbar nav{gap:12px;font-size:.95rem}.topbar{padding:10px 16px}.hero-card{padding:24px 20px}.card{padding:18px}}.error{color:var(--bad)}.course-progress{box-shadow:var(--shadow-sm);background:#fff;border-radius:999px;align-items:center;gap:12px;margin:8px 0;padding:10px 20px;display:flex}.course-progress .bar{background:#eceff4;border-radius:7px;flex:1;height:14px;overflow:hidden}.course-progress .fill{background:linear-gradient(90deg, var(--accent), #12b886);border-radius:7px;height:100%;transition:width .4s}.legend{flex-wrap:wrap;align-items:center;gap:6px 14px;margin-bottom:10px;font-size:.85rem;display:flex}.legend>span{align-items:center;gap:5px;display:inline-flex}.lvl{vertical-align:-2px;box-sizing:border-box;border-radius:3px;flex:none;width:13px;height:13px;display:inline-block}.lvl.l0{border:2px solid #9aa4b2}.lvl.l1{border:2px solid #e7943a}.lvl.l2{background:linear-gradient(#0000 50%,#9b7cf0 50%);border:2px solid #9b7cf0}.lvl.l3{background:#7b4fe0}.lvl.l4{background:#4b22b8;box-shadow:0 0 0 2px #c9b8ff}.pct{color:var(--muted);font-size:.8em;font-weight:600}.topbar .nav-cta,.topbar .nav-cta:hover{color:#fff}@media (width<=700px){.topbar .nav-cta{display:none}}.hero-card>.row{margin-bottom:18px}.review-picks{flex-direction:column;gap:8px;margin-top:16px;display:flex}.review-picks label{background:var(--field);cursor:pointer;border-radius:14px;grid-template-columns:auto 1fr;align-items:baseline;gap:2px 10px;padding:10px 14px;display:grid}.review-picks label.on{background:var(--soft);outline:2px solid var(--accent)}.review-picks label>:not(input:first-child):not(b){grid-column:2}.review-row{background:var(--field);border-radius:14px;flex-direction:column;gap:2px;padding:10px 14px;display:flex}.review-row.fipi{background:var(--soft);outline:2px solid var(--accent)}.review-row.ok b{color:#0c7a52}.review-row.bad b{color:#a62b2b}.review-out{background:var(--field);white-space:pre-wrap;border-radius:14px;padding:12px}.login-buttons{flex-direction:column;align-items:flex-start;gap:14px;display:flex}.login-note{font-size:.85rem;line-height:1.5}.family-list{padding-left:20px;font-weight:600;line-height:1.8}.invite-link{gap:10px;margin-bottom:14px;display:flex}.invite-link input{flex:1;min-width:0}.topbar .user{border-left:1px solid var(--border);align-items:center;gap:16px;padding-left:24px;display:flex}.topbar .user .name{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;max-width:180px;font-weight:600;overflow:hidden}.topbar .user select{padding:6px 36px 6px 14px}.linklike{font:inherit;color:var(--muted);cursor:pointer;background:0 0;border:0;padding:0;font-weight:600}@media (width<=1000px){.topbar .user .name{display:none}}@media (width<=700px){.topbar{flex-wrap:wrap;padding-block:8px}.topbar .user{border-left:0;gap:14px;margin-left:auto;padding-left:0}.topbar .user select{text-overflow:ellipsis;max-width:40vw}.topbar:not(.app-nav) nav.main{border-top:1px solid var(--border);flex-basis:100%;order:3;gap:20px;margin:0;padding-top:8px}}.site-footer{--pad:max(var(--gutter), (100% - var(--container)) / 2);padding:48px var(--pad) 32px;background:var(--dark);color:#fff;grid-template-columns:2fr 1fr 1fr;gap:32px;margin-top:auto;display:grid}.site-footer .brand{color:var(--dark-muted);flex-direction:column;gap:10px;display:flex}.site-footer .logo{color:#fff}.site-footer nav{flex-direction:column;gap:10px;display:flex}.site-footer nav b{margin-bottom:4px}.site-footer a{color:var(--dark-muted);text-decoration:none}.site-footer a:hover{color:#fff}.site-footer .legal{color:var(--dark-muted);border-top:1px solid #ffffff1f;grid-column:1/-1;margin:0;padding-top:20px;font-size:.85rem}@media (width<=700px){.site-footer{grid-template-columns:1fr 1fr;padding-top:36px}.site-footer .brand{grid-column:1/-1}}@media (width<=420px){.site-footer{grid-template-columns:1fr}}body.app{--side:248px;--edge:#dfe3ec}.icon{fill:none;stroke:currentColor;stroke-width:2px;stroke-linecap:round;stroke-linejoin:round;flex:none}.app-nav nav.main a{color:#3b4150;align-items:center;gap:12px;font-weight:700;display:flex}.app-nav .consult{display:none}.avatar{background:var(--soft);width:34px;height:34px;color:var(--accent);border-radius:50%;flex:none;place-items:center;font-weight:800;display:grid}@media (width>=1000px){body.app{padding-left:var(--side);--header-h:0px}.app-nav{width:var(--side);border-right:1px solid var(--border);-webkit-backdrop-filter:none;backdrop-filter:none;z-index:10;background:#fff;flex-direction:column;align-items:stretch;gap:6px;padding:22px 16px;position:fixed;inset:0 auto 0 0}.app-nav .logo{padding:0 10px 18px}.app-nav nav.main{flex-direction:column;align-items:stretch;gap:4px;margin:0}.app-nav nav.main a{border-radius:14px;padding:12px 14px}.app-nav nav.main a:hover{background:var(--field);color:var(--text)}.app-nav nav.main a.active{background:var(--soft);color:var(--accent);box-shadow:inset 0 0 0 2px #cfdcff}.app-nav .consult{color:var(--muted);background:linear-gradient(135deg,#e6fbf3,#eef3ff);border-radius:18px;align-items:flex-start;gap:12px;margin-top:auto;padding:14px;font-size:.82rem;line-height:1.35;text-decoration:none;display:flex}.app-nav .consult b{color:var(--text);margin-bottom:2px;font-size:.9rem;display:block}.app-nav .consult .icon{color:var(--accent-2);margin-top:2px}.app-nav .consult:hover{box-shadow:inset 0 0 0 2px #bfeedd}.app-nav .user{border:0;border-top:1px solid var(--border);flex-wrap:wrap;gap:10px;padding:14px 6px 0}.app-nav .user .name{min-width:0;color:var(--text);flex:1;display:block}.app-nav .user select{order:-1;width:100%}.app-nav .user>a.btn{color:#fff;flex:1}}@media (width<=999.98px){body.app{--header-h:60px;padding-bottom:calc(72px + env(safe-area-inset-bottom))}.app-nav{-webkit-backdrop-filter:none;backdrop-filter:none;border-bottom:1px solid var(--border);background:#fff;min-height:60px;padding-block:10px}.app-nav .user{border-left:0;gap:12px;margin-left:auto;padding-left:0}.app-nav .user .avatar{display:none}.app-nav nav.main{padding:6px 6px calc(6px + env(safe-area-inset-bottom));border-top:1px solid var(--border);z-index:20;background:#fff;justify-content:space-around;gap:4px;margin:0;display:flex;position:fixed;bottom:0;left:0;right:0}.app-nav nav.main a{color:#7a8190;border-radius:12px;flex-direction:column;flex:1;gap:3px;max-width:96px;padding:6px 4px;font-size:.72rem}.app-nav nav.main a .icon{width:24px;height:24px}.app-nav nav.main a.active{color:var(--accent);background:var(--soft)}}.app-footer{width:min(100% - 2 * var(--gutter), var(--container));border-top:1px solid var(--border);color:var(--muted);flex-wrap:wrap;gap:8px 20px;margin:auto auto 0;padding:24px 0 32px;font-size:.82rem;display:flex}.app-footer a{color:var(--muted);text-decoration:none}.app-footer a:hover{color:var(--accent)}body.app .page{padding-top:28px}@media (width<=700px){body.app .page{padding-top:16px}}body.app h1{margin:0 0 8px;font-size:clamp(1.7rem,2.6vw,2.3rem);line-height:1.12}body.app h2{margin:1.4em 0 .7em;font-size:1.3rem}body.app .lead{margin-bottom:0;font-size:1.02rem}body.app .card,body.app .topic-row,body.app .course-progress,body.app .mindmap,body.app .video.locked,body.app .timer,body.app .cell,body.app .stats>div,body.app .filters-box{border:2px solid var(--edge);box-shadow:none;background:#fff;border-bottom-width:5px}body.app .card{border-radius:22px}body.app .card.task{padding:24px 26px;position:relative}body.app .card.task:before{content:"";background:var(--c,var(--accent));border-radius:0 4px 4px 0;width:5px;position:absolute;top:22px;bottom:22px;left:-2px}body.app .task-meta span{background:var(--field);color:#3b4150;border-radius:8px;padding:4px 9px;font-weight:800}body.app .task-meta span:first-child{background:color-mix(in srgb, var(--c,var(--accent)) 12%, #fff);color:var(--c,var(--accent))}body.app .chip{box-shadow:none;background:color-mix(in srgb, var(--c,var(--accent)) 12%, #fff);color:var(--c,var(--accent));border-radius:8px;padding:4px 10px;font-size:.8rem;font-weight:800}body.app .chip.plain{background:var(--field);color:#3b4150}body.app .btn{letter-spacing:.03em;text-transform:uppercase;border:0;border-radius:14px;padding:13px 24px;font-size:.92rem;font-weight:800;transition:transform 80ms,box-shadow 80ms,filter .15s;box-shadow:0 4px #1538b8}body.app .btn:hover:not(:disabled){filter:brightness(1.06);transform:none;box-shadow:0 4px #1538b8}body.app .btn:active:not(:disabled){transform:translateY(4px);box-shadow:0 0 #1538b8}body.app .btn.secondary{color:var(--accent);border:2px solid var(--edge);box-shadow:0 4px 0 var(--edge);background:#fff;padding:11px 22px}body.app .btn.secondary:active:not(:disabled){box-shadow:0 0 0 var(--edge)}body.app .btn.small{padding:9px 16px;font-size:.8rem}body.app .btn.small.secondary{padding:7px 14px}body.app .btn:disabled{opacity:1;color:#9aa4b2;background:#e5e9f2;box-shadow:0 4px #d3d9e4}body.app input:not([type=checkbox]):not([type=file]){border:2px solid var(--edge);background:#fff;font-weight:600}body.app input:focus{border-color:var(--accent);outline:none}body.app select{border:2px solid var(--edge);box-shadow:none;border-radius:12px;padding-block:11px}body.app .options label{border:2px solid var(--edge);background:#fff}body.app .options label:has(input:checked){border-color:var(--accent);background:var(--soft);outline:0}.page-head{flex-wrap:wrap;align-items:flex-end;gap:16px 32px;margin-bottom:8px;display:flex}.page-head>:first-child{flex:420px;min-width:0}.page-head .row{gap:8px;margin-bottom:10px}.stats{flex-wrap:wrap;gap:12px;display:flex}.stats>div{border-radius:18px;min-width:116px;padding:10px 18px}.stats b{color:var(--c,var(--accent));font-size:1.4rem;display:block}.stats span{color:var(--muted);font-size:.82rem;font-weight:600}@media (width<=700px){.stats{width:100%}.stats>div{flex:1;min-width:0;padding:8px 12px}}body.app .split>aside{top:16px}body.app .filters-box{border-radius:20px;padding:18px}body.app .filters-box h3{margin:0 0 12px;font-size:1rem}.filters-toggle{display:none}@media (width<=1099.98px){.filters-toggle{display:inline-flex}.filters-box:not(.open) .filters{display:none}body.app .filters-box{background:0 0;border:0;padding:0}.filters-box h3{display:none}.filters-box.open .filters{margin-top:12px}}.found{margin:12px 0 0;font-size:.9rem;font-weight:600}body.app .video{border-radius:22px}body.app .video.locked>div{color:var(--muted)}body.app .video.locked .lock{background:var(--field);color:#9aa4b2;border-radius:50%;place-items:center;width:64px;height:64px;font-size:0;display:grid}body.app .hero-card{background:0 0;border-radius:0;margin:0 0 8px;padding:0}body.app .hero-card.start{border:2px solid var(--edge);background:#fff;border-bottom-width:5px;border-radius:22px;padding:32px}body.app .score{background:var(--brand);border:0}body.app .course-progress{border-radius:18px;padding:10px 16px}body.app .mindmap{border-radius:24px}body.app .topic-row{border-radius:18px}body.app .topic-row.open{border-color:var(--c);outline:0}body.app .timer{border-radius:14px;padding:8px 16px}body.app .cell{border-radius:14px}body.app .cell.done{background:var(--soft);border-color:#cfdcff}body.app .cell.current{background:var(--accent);color:#fff;border-color:#1538b8}body.app .exam-bar{-webkit-backdrop-filter:none;backdrop-filter:none;background:0 0}.topbar a.btn,.topbar a.btn:hover,.topbar a.btn.active{color:#fff}@media (width>=1340px){.split.skill{grid-template-columns:minmax(0,5fr) minmax(0,6fr);max-width:none}.split.skill h2:first-child{margin-top:1em}}@media (width<=700px){svg.radial{touch-action:auto;cursor:default}}.landing{--hl:var(--accent-2);width:min(100% - 2 * var(--gutter), var(--container));margin:0 auto 88px}.landing h1,.landing h2,.landing h3{letter-spacing:-.02em}.hl{color:var(--accent);white-space:nowrap;position:relative}.hl:after{content:"";background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 6'%3E%3Cpath d='M0 3 Q5 0 10 3 T20 3' fill='none' stroke='%2312b886' stroke-width='2'/%3E%3C/svg%3E") 0 0/.6em 100% repeat-x;height:.28em;position:absolute;bottom:-.12em;left:0;right:0}.hl-light{color:#7ef0c6}.accent{color:var(--accent)}.l-hero{border-radius:var(--r-lg);background:var(--hero);grid-template-columns:1.15fr .85fr;gap:24px;margin-top:8px;padding:56px;display:grid;overflow:hidden}.chips{flex-wrap:wrap;gap:10px;margin-bottom:28px;display:flex}.chips span{color:var(--muted);box-shadow:var(--shadow-sm);background:#fff;border-radius:999px;padding:8px 16px;font-size:.9rem}.l-hero h1{margin:0 0 20px;font-size:clamp(2.2rem,4.4vw,4rem);font-weight:800;line-height:1.05}.l-hero p{color:#2f3440;max-width:560px;margin:0 0 32px;font-size:1.25rem;line-height:1.45}.l-hero-art{justify-content:center;align-items:center;min-height:380px;display:flex;position:relative}.atom{width:min(360px,90%)}.atom .orbit{fill:none;stroke:var(--accent);stroke-width:12px}.atom .nucleus{fill:var(--accent)}.atom .electron{fill:var(--hl)}.electron-spin{transform-origin:100px 100px;animation:9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.sticker{white-space:nowrap;background:#fff;border-radius:16px;align-items:center;gap:8px;padding:10px 16px;font-weight:700;animation:5s ease-in-out infinite float;display:flex;position:absolute;box-shadow:0 10px 30px #14161c1a}.sticker.s1{top:6%;left:0}.sticker.s2{color:var(--hl);animation-delay:-1.5s;top:22%;right:0}.sticker.s3{font-weight:500;animation-delay:-3s;bottom:14%;left:2%}.sticker.s4{font-weight:600;animation-delay:-2s;bottom:2%;right:4%}@keyframes float{50%{transform:translateY(-10px)}}.l-trust{text-align:center;grid-template-columns:repeat(3,1fr);gap:24px;padding:72px 0 56px;display:grid}.t-art{background:#fff;border-radius:50%;place-items:center;width:120px;height:120px;margin:0 auto 18px;font-size:64px;display:grid;box-shadow:0 10px 30px #14161c0f}.l-trust h3{margin:0 0 8px;font-size:1.6rem;line-height:1.15}.l-trust p{color:var(--muted);margin:0}.l-dark{border-radius:var(--r-lg);background:radial-gradient(circle at 20% 0%, #23356e, var(--dark) 70%);color:#fff;text-align:center;padding:64px 32px}.l-dark h2{margin:0 0 12px;font-size:clamp(1.8rem,3.6vw,3.2rem)}.l-dark p{color:var(--dark-muted);margin:0 0 36px;font-size:1.15rem}.l-stats{grid-template-columns:repeat(3,minmax(0,260px));justify-content:center;gap:14px;display:grid}.l-stats div{border-radius:var(--r-md);background:#ffffff14;border:1px solid #ffffff1f;flex-direction:column;gap:6px;padding:22px 16px;display:flex}.l-stats b{font-size:2rem}.l-stats span{color:var(--dark-muted);font-size:.95rem}.l-section{padding:88px 0 0}.l-title{text-align:center;margin:0 0 12px;font-size:clamp(1.9rem,3.8vw,3.2rem);line-height:1.1}.l-sub{text-align:center;color:var(--muted);margin:0 0 40px;font-size:1.2rem}.carousel{--edge:max(var(--gutter), (100vw - var(--container)) / 2);margin:0 calc(-1 * var(--edge));padding:8px var(--edge) 16px;scroll-padding-inline:var(--edge);scroll-snap-type:x mandatory;scrollbar-width:none;gap:20px;list-style:none;display:flex;overflow-x:auto}.carousel::-webkit-scrollbar{display:none}.carousel li{scroll-snap-align:start;border-radius:var(--r-lg);min-height:300px;box-shadow:var(--shadow);background:#fff;flex-direction:column;flex:0 0 min(380px,82vw);padding:32px;display:flex}.c-top{justify-content:space-between;align-items:center;margin-bottom:40px;display:flex}.c-step{background:var(--soft);color:var(--accent);border-radius:999px;padding:8px 16px;font-weight:800}.c-icon{font-size:52px}.carousel h3{margin:0 0 12px;font-size:1.5rem;line-height:1.15}.carousel p{color:var(--muted);margin:0;font-size:1.05rem;line-height:1.5}.arrows{justify-content:center;gap:12px;margin-top:20px;display:flex}.arrows button{background:var(--text);color:#fff;cursor:pointer;border:0;border-radius:50%;width:52px;height:52px;padding-bottom:4px;font-size:1.8rem;line-height:1}.arrows button:hover{background:var(--accent)}.tabs{justify-content:center;gap:8px;margin-bottom:20px;display:flex}.tabs button{font:inherit;color:var(--text);cursor:pointer;background:#fff;border:0;border-radius:999px;padding:12px 22px;font-weight:700}.tabs button.active{background:var(--text);color:#fff}.browser{border-radius:var(--r-md);border:1px solid var(--border);background:#fff;max-width:1000px;margin:0 auto;overflow:hidden;box-shadow:0 30px 80px #14161c24}.browser-bar{background:linear-gradient(90deg, var(--accent), #5b7cff);align-items:center;gap:8px;padding:12px 16px;display:flex}.browser-bar i{background:#fff9;border-radius:50%;width:11px;height:11px}.browser-bar span{color:#fff;opacity:.9;margin-left:12px;font-size:.85rem}.browser img{width:100%;height:auto;display:block}.l-features{grid-template-columns:repeat(4,1fr);gap:16px;margin-top:40px;display:grid}.l-card{border-radius:var(--r-md);color:inherit;box-shadow:var(--shadow);background:#fff;padding:24px;text-decoration:none}.l-card.link:hover{outline:2px solid var(--accent)}.l-card .f-icon{font-size:36px}.l-card h3{margin:12px 0 6px;font-size:1.15rem}.l-card p{color:var(--muted);margin:0;line-height:1.45}.teacher{text-align:center;max-width:900px;color:var(--muted);border:2px dashed var(--border);box-shadow:none;margin:32px auto 0;padding:56px}.l-price{border-radius:var(--r-lg);background:var(--brand);color:#fff;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:32px;margin-top:88px;padding:48px 56px;display:flex}.l-price h2{margin:0 0 10px;font-size:clamp(1.7rem,3vw,2.6rem)}.l-price p{opacity:.92;max-width:560px;margin:0;font-size:1.1rem}.price-box{flex-direction:column;align-items:flex-start;gap:16px;display:flex}.price-box b{font-size:2rem}.l-consult{border-radius:var(--r-lg);box-shadow:var(--shadow);background:#fff;grid-template-columns:1fr 1fr;align-items:center;gap:48px;margin-top:88px;padding:56px;display:grid}.l-consult h2{margin:0 0 20px;font-size:clamp(1.8rem,3.2vw,2.8rem);line-height:1.1}.l-consult ul{gap:12px;margin:0;padding:0;font-size:1.1rem;list-style:none;display:grid}.l-consult li:before{content:"✓";color:var(--hl);margin-right:10px;font-weight:800}.l-form{flex-direction:column;gap:12px;display:flex}.l-form input:not([type=checkbox]){background:var(--field);border-radius:var(--r-sm);border:0;padding:18px 20px;font-size:1rem}.l-form .consent{color:var(--muted);align-items:flex-start;gap:8px;font-size:.82rem;display:flex}.form-done{text-align:center;font-size:1.3rem;font-weight:700}.l-faq{gap:12px;max-width:900px;margin:32px auto 0;display:grid}.l-faq details{border-radius:var(--r-md);background:#fff;padding:22px 28px}.l-faq summary{cursor:pointer;justify-content:space-between;gap:16px;font-size:1.1rem;font-weight:700;list-style:none;display:flex}.l-faq summary::-webkit-details-marker{display:none}.l-faq summary:after{content:"+";color:var(--accent);font-size:1.6rem;line-height:1;transition:transform .2s}.l-faq details[open] summary:after{transform:rotate(45deg)}.l-faq p{color:var(--muted);margin:14px 0 0;line-height:1.55}@media (width<=900px){.l-hero{grid-template-columns:1fr;padding:32px 22px}.l-hero-art{min-height:300px}.l-features{grid-template-columns:1fr 1fr}.l-consult{grid-template-columns:1fr;padding:32px 22px}.l-price{padding:36px 24px}}@media (width<=600px){.l-trust{grid-template-columns:1fr;gap:40px;padding-top:48px}.l-stats,.l-features{grid-template-columns:1fr}.l-hero .pill{width:100%;padding:16px 24px}.l-section{padding-top:64px}.l-dark{padding:44px 20px}.l-hero-art{min-height:320px}.atom{width:64%}.sticker{padding:8px 12px;font-size:.9rem}.sticker.s3{bottom:22%;left:0}.sticker.s4{bottom:0;right:0}}.price-box .trial{background:#ffffff2e;border-radius:999px;padding:6px 14px;font-weight:700}.l-form .docs{color:var(--muted);margin:0;font-size:.82rem}