@font-face{font-family:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-cyrillic-ext-wght-normal.DOFToQv1.woff2) format("woff2-variations");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-cyrillic-wght-normal.DayYxulF.woff2) format("woff2-variations");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-math-wght-normal.Bl4ZGkZl.woff2) format("woff2-variations");unicode-range:U+0302-0303,U+0305,U+0307-0308,U+0310,U+0312,U+0315,U+031A,U+0326-0327,U+032C,U+032F-0330,U+0332-0333,U+0338,U+033A,U+0346,U+034D,U+0391-03A1,U+03A3-03A9,U+03B1-03C9,U+03D1,U+03D5-03D6,U+03F0-03F1,U+03F4-03F5,U+2016-2017,U+2034-2038,U+203C,U+2040,U+2043,U+2047,U+2050,U+2057,U+205F,U+2070-2071,U+2074-208E,U+2090-209C,U+20D0-20DC,U+20E1,U+20E5-20EF,U+2100-2112,U+2114-2115,U+2117-2121,U+2123-214F,U+2190,U+2192,U+2194-21AE,U+21B0-21E5,U+21F1-21F2,U+21F4-2211,U+2213-2214,U+2216-22FF,U+2308-230B,U+2310,U+2319,U+231C-2321,U+2336-237A,U+237C,U+2395,U+239B-23B7,U+23D0,U+23DC-23E1,U+2474-2475,U+25AF,U+25B3,U+25B7,U+25BD,U+25C1,U+25CA,U+25CC,U+25FB,U+266D-266F,U+27C0-27FF,U+2900-2AFF,U+2B0E-2B11,U+2B30-2B4C,U+2BFE,U+3030,U+FF5B,U+FF5D,U+1D400-1D7FF,U+1EE00-1EEFF}@font-face{font-family:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-symbols-wght-normal.DxQzqQfC.woff2) format("woff2-variations");unicode-range:U+0001-000C,U+000E-001F,U+007F-009F,U+20DD-20E0,U+20E2-20E4,U+2150-218F,U+2190,U+2192,U+2194-2199,U+21AF,U+21E6-21F0,U+21F3,U+2218-2219,U+2299,U+22C4-22C6,U+2300-243F,U+2440-244A,U+2460-24FF,U+25A0-27BF,U+2800-28FF,U+2921-2922,U+2981,U+29BF,U+29EB,U+2B00-2BFF,U+4DC0-4DFF,U+FFF9-FFFB,U+10140-1018E,U+10190-1019C,U+101A0,U+101D0-101FD,U+102E0-102FB,U+10E60-10E7E,U+1D2C0-1D2D3,U+1D2E0-1D37F,U+1F000-1F0FF,U+1F100-1F1AD,U+1F1E6-1F1FF,U+1F30D-1F30F,U+1F315,U+1F31C,U+1F31E,U+1F320-1F32C,U+1F336,U+1F378,U+1F37D,U+1F382,U+1F393-1F39F,U+1F3A7-1F3A8,U+1F3AC-1F3AF,U+1F3C2,U+1F3C4-1F3C6,U+1F3CA-1F3CE,U+1F3D4-1F3E0,U+1F3ED,U+1F3F1-1F3F3,U+1F3F5-1F3F7,U+1F408,U+1F415,U+1F41F,U+1F426,U+1F43F,U+1F441-1F442,U+1F444,U+1F446-1F449,U+1F44C-1F44E,U+1F453,U+1F46A,U+1F47D,U+1F4A3,U+1F4B0,U+1F4B3,U+1F4B9,U+1F4BB,U+1F4BF,U+1F4C8-1F4CB,U+1F4D6,U+1F4DA,U+1F4DF,U+1F4E3-1F4E6,U+1F4EA-1F4ED,U+1F4F7,U+1F4F9-1F4FB,U+1F4FD-1F4FE,U+1F503,U+1F507-1F50B,U+1F50D,U+1F512-1F513,U+1F53E-1F54A,U+1F54F-1F5FA,U+1F610,U+1F650-1F67F,U+1F687,U+1F68D,U+1F691,U+1F694,U+1F698,U+1F6AD,U+1F6B2,U+1F6B9-1F6BA,U+1F6BC,U+1F6C6-1F6CF,U+1F6D3-1F6D7,U+1F6E0-1F6EA,U+1F6F0-1F6F3,U+1F6F7-1F6FC,U+1F700-1F7FF,U+1F800-1F80B,U+1F810-1F847,U+1F850-1F859,U+1F860-1F887,U+1F890-1F8AD,U+1F8B0-1F8BB,U+1F8C0-1F8C1,U+1F900-1F90B,U+1F93B,U+1F946,U+1F984,U+1F996,U+1F9E9,U+1FA00-1FA6F,U+1FA70-1FA7C,U+1FA80-1FA89,U+1FA8F-1FAC6,U+1FACE-1FADC,U+1FADF-1FAE9,U+1FAF0-1FAF8,U+1FB00-1FBFF}@font-face{font-family:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-vietnamese-wght-normal.BBxOatbv.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-latin-ext-wght-normal.QAhDxQuo.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Onest Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/onest-latin-wght-normal.Dun_Rd-l.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-ext-wght-normal.BOeWTOD4.woff2) format("woff2-variations");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-cyrillic-wght-normal.DqGufNeO.woff2) format("woff2-variations");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-ext-wght-normal.DlzME5K_.woff2) format("woff2-variations");unicode-range:U+1F00-1FFF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-greek-wght-normal.CkhJZR-_.woff2) format("woff2-variations");unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-vietnamese-wght-normal.CBcvBZtf.woff2) format("woff2-variations");unicode-range:U+0102-0103,U+0110-0111,U+0128-0129,U+0168-0169,U+01A0-01A1,U+01AF-01B0,U+0300-0301,U+0303-0304,U+0308-0309,U+0323,U+0329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-ext-wght-normal.DO1Apj_S.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Inter Variable;font-style:normal;font-display:swap;font-weight:100 900;src:url(/_astro/inter-latin-wght-normal.Dx4kXJAl.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Caveat Variable;font-style:normal;font-display:swap;font-weight:400 700;src:url(/_astro/caveat-cyrillic-ext-wght-normal.DiMfzA-V.woff2) format("woff2-variations");unicode-range:U+0460-052F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Caveat Variable;font-style:normal;font-display:swap;font-weight:400 700;src:url(/_astro/caveat-cyrillic-wght-normal.D5lnP6kL.woff2) format("woff2-variations");unicode-range:U+0301,U+0400-045F,U+0490-0491,U+04B0-04B1,U+2116}@font-face{font-family:Caveat Variable;font-style:normal;font-display:swap;font-weight:400 700;src:url(/_astro/caveat-latin-ext-wght-normal.Byk3UhVp.woff2) format("woff2-variations");unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,U+0329,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:Caveat Variable;font-style:normal;font-display:swap;font-weight:400 700;src:url(/_astro/caveat-latin-wght-normal.C1hSzPvX.woff2) format("woff2-variations");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--navy:#002b8f;--royal:#0d47c9;--electric:#2563eb;--orange:#ff5a00;--orange-soft:#ff7a1a;--accent:#0d47c9;--accent-hover:#002b8f;--cta:#ff5a00;--cta-hover:#e04e00;--dark:#1e1e1e;--text: #181818;--black: #000;--text2: #555;--muted: #6b6b6b;--line: #e4e6ee;--bg: #fff;--soft: #f4f4f4;--r-btn: 12px;--r-card: 16px;--r-pill: 9999px;--r-field: 8px;--shadow: 0 3px 12px rgba(0,0,0,.12), 0 0 2px rgba(0,0,0,.3);--container: 1200px;--section: 80px}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.6 Inter Variable,system-ui,sans-serif;-webkit-font-smoothing:antialiased}img{max-width:100%;display:block}a{color:var(--accent)}a:hover{color:var(--accent-hover)}h1,h2,h3{font-family:Onest Variable,Inter Variable,sans-serif;font-weight:700;color:var(--black);line-height:1.15;margin:0 0 16px}h1{font-size:clamp(32px,6vw,56px)}h2{font-size:clamp(28px,4.5vw,44px);text-align:center;margin-bottom:40px}h3{font-size:20px;line-height:1.3}p{margin:0 0 12px}.container{max-width:var(--container);margin:0 auto;padding:0 16px}.section{padding:48px 0}@media(min-width:768px){.section{padding:var(--section) 0}.container{padding:0 24px}}.btn{display:inline-block;background:var(--cta);color:#fff;font:700 19px/1.3 Inter Variable,sans-serif;padding:16px 28px;border:0;border-radius:var(--r-btn);text-decoration:none;cursor:pointer;text-align:center}.btn:hover{background:var(--cta-hover);color:#fff}.btn:focus-visible,summary:focus-visible,input:focus-visible{outline:3px solid rgba(37,99,235,.5);outline-offset:2px}.btn-sm{padding:10px 18px;font-size:19px}.btn-block{display:block;width:100%}.btn-ghost{background:#fff;color:var(--accent);box-shadow:inset 0 0 0 2px var(--accent)}.btn-ghost:hover{background:var(--soft);color:var(--accent-hover)}.tag{display:inline-block;padding:6px 16px;border-radius:var(--r-pill);background:#fff;box-shadow:var(--shadow);font-size:14px;font-weight:600;margin-bottom:20px}.hero{text-align:center;padding:48px 0 56px;background:radial-gradient(600px 400px at 0% 20%,rgba(37,99,235,.35),transparent 70%),radial-gradient(700px 450px at 100% 10%,rgba(255,90,0,.18),transparent 70%)}.hero h1{max-width:900px;margin:0 auto 20px}.hero .sub{font-size:14px;color:var(--text2);max-width:640px;margin:0 auto 28px}.hero .note{font-size:13px;color:var(--muted);max-width:640px;margin:20px auto 0}@media(min-width:768px){.hero{padding:96px 0 88px}.hero .sub{font-size:16px}}.grid{display:grid;gap:16px}@media(min-width:700px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}}@media(min-width:1000px){.grid-5{grid-template-columns:repeat(3,1fr)}}.card{background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow);padding:24px}.card p:last-child{margin-bottom:0}.num{display:inline-grid;place-items:center;width:36px;height:36px;border-radius:var(--r-pill);background:var(--soft);color:var(--accent);font-weight:700;margin-bottom:12px}.muted-box{background:var(--soft);border-radius:var(--r-card);padding:24px;margin-top:16px}.muted-box h3{margin-bottom:8px}.author{display:grid;gap:32px;align-items:center}@media(min-width:800px){.author{grid-template-columns:340px 1fr}}.author img{width:min(300px,70vw);aspect-ratio:1;border-radius:50%;object-fit:cover;margin:0 auto;box-shadow:var(--shadow)}.counters{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:24px}.counters b{display:block;font:700 28px/1.1 Onest Variable,sans-serif;color:var(--accent)}.counters span{font-size:13px;color:var(--text2)}.edu{color:var(--text2);font-size:15px}.lesson h3{margin-bottom:12px}.lesson ul{margin:0 0 16px;padding-left:20px}.lesson .result{font-weight:600}.faq{max-width:820px;margin:0 auto;display:grid;gap:12px}.faq details{background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow)}.faq summary{list-style:none;cursor:pointer;padding:20px 56px 20px 24px;font-weight:600;position:relative}.faq summary::-webkit-details-marker{display:none}.faq summary:after{content:"+";position:absolute;right:24px;top:50%;transform:translateY(-50%);font-size:24px;color:var(--accent)}.faq details[open] summary:after{content:"−"}.faq .answer{padding:0 24px 20px;color:var(--text2)}.form{max-width:520px;margin:0 auto;display:grid;gap:12px;text-align:left}.form label.field{display:grid;gap:6px;font-size:14px;font-weight:600}.form input[type=text],.form input[type=email]{font:inherit;padding:14px 16px;border:1px solid #cfcbe6;border-radius:var(--r-field);width:100%}.form .check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--text2)}.form .check input{margin-top:4px;width:18px;height:18px;accent-color:var(--royal);flex:none}.form .hint{font-size:13px;color:var(--muted);text-align:center;margin:0}.form-card{background:#fff;border-radius:var(--r-card);box-shadow:var(--shadow);padding:24px}.reg{background:radial-gradient(600px 400px at 0% 100%,rgba(37,99,235,.35),transparent 70%),radial-gradient(700px 450px at 100% 0%,rgba(255,90,0,.18),transparent 70%)}.reg h2{margin-bottom:24px}.ask{text-align:center}.ask p{color:var(--text2);margin-top:8px}.center{text-align:center}.stack>*+*{margin-top:16px}.disclaimer{font-size:13px;color:var(--muted);max-width:900px;margin:0 auto}.footer{border-top:1px solid var(--line);padding:32px 0 40px;font-size:14px;color:var(--text2);text-align:center}.footer nav{display:flex;flex-wrap:wrap;gap:8px 24px;justify-content:center;margin-bottom:12px}.video{position:relative;aspect-ratio:16/9;border-radius:var(--r-card);overflow:hidden;background:#000;box-shadow:var(--shadow)}.video button,.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0;padding:0}.video button{cursor:pointer;background:#000}.video img{width:100%;height:100%;object-fit:cover;opacity:.85}.video .play{position:absolute;left:50%;top:50%;width:72px;height:72px;margin:-36px 0 0 -36px;border-radius:50%;background:var(--cta)}.video .play:after{content:"";position:absolute;left:29px;top:22px;border-left:22px solid #fff;border-top:14px solid transparent;border-bottom:14px solid transparent}.price-card{display:flex;flex-direction:column}.price-card .price{font:700 36px/1.1 Onest Variable,sans-serif;color:var(--black);margin:4px 0 16px}.price-card .price s{font:500 18px Inter Variable,sans-serif;color:var(--muted);margin-left:8px}.price-card ul{padding-left:20px;margin:0 0 20px;flex:1;font-size:15px}.price-card li{margin-bottom:8px}.price-card details summary{list-style:none}.price-card details summary::-webkit-details-marker{display:none}.price-card details .form{margin-top:16px}.intro{font-size:14px;color:var(--text2)}.form-error{background:#fff0f0;border:2px solid #c62828;color:#8a1c1c;padding:12px 16px;border-radius:var(--r-field);font-size:15px}.todo{display:none}html[data-show-todo] .todo{display:block}a.is-todo{outline:none}html[data-show-todo] a.is-todo{outline:2px dashed #e0457b;outline-offset:3px}.todo{border:2px dashed #e0457b;background:#fff0f5;color:#a3123f;padding:12px 16px;border-radius:var(--r-field);font-size:14px;margin:12px 0}.hero,.dark{background:radial-gradient(700px 420px at 0% 0%,rgba(37,99,235,.55),transparent 70%),radial-gradient(600px 400px at 100% 100%,rgba(255,90,0,.22),transparent 70%),linear-gradient(135deg,var(--navy),var(--royal));color:#fff}.hero h1,.hero h2,.dark h1,.dark h2,.dark h3{color:#fff}.hero .sub,.dark p{color:#dbe5ff}.hero .note{color:#b4c6f5}.hero a:not(.btn),.dark a:not(.btn){color:#fff;text-decoration-color:var(--orange-soft)}.tag{background:#fff;color:var(--navy);box-shadow:none}.btn-ghost{background:transparent;color:var(--royal);box-shadow:inset 0 0 0 2px var(--royal)}.btn-ghost:hover{background:var(--royal);color:#fff}.dark .btn-ghost{color:#fff;box-shadow:inset 0 0 0 2px #fff}.dark .btn-ghost:hover{background:#fff;color:var(--navy)}.num{background:var(--royal);color:#fff}.counters b{color:var(--royal)}.reg{background:radial-gradient(700px 420px at 0% 0%,rgba(37,99,235,.55),transparent 70%),radial-gradient(600px 400px at 100% 100%,rgba(255,90,0,.22),transparent 70%),linear-gradient(135deg,var(--navy),var(--royal))}.reg h2{color:#fff}.muted-box{background:var(--soft);border-left:4px solid var(--orange)}.section.alt{background:var(--soft)}.card,.faq details,.form-card{box-shadow:0 3px 12px #001e641a,0 0 2px #0003}.faq summary:after{color:var(--orange)}.footer{background:var(--dark);color:#c9c9c9;border:0}.footer a{color:#fff}.price-card .price{color:var(--navy)}.dark .card,.dark .card p,.dark .form-card{color:var(--text)}.dark .card h3{color:var(--black)}.carousel{position:relative}.track{list-style:none;margin:0;padding:8px 4px 16px;display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:thin}.slide{flex:0 0 85%;scroll-snap-align:start;display:flex;flex-direction:column;gap:8px}@media(min-width:700px){.slide{flex-basis:45%}}@media(min-width:1000px){.slide{flex-basis:31%}}.slide img{border-radius:12px;width:100%}.rv-video{position:relative;aspect-ratio:16/9;background:#0b1a4d;border-radius:12px;overflow:hidden}.rv-video button,.rv-video video{position:absolute;inset:0;width:100%;height:100%;border:0;padding:0;background:transparent;cursor:pointer}.rv-video button:disabled{cursor:default}.rv-video img{height:100%;object-fit:cover;border-radius:0}.rv-video .play{position:absolute;left:50%;top:50%;width:56px;height:56px;margin:-28px 0 0 -28px;border-radius:50%;background:var(--cta)}.rv-video .play:after{content:"";position:absolute;left:22px;top:16px;border-left:17px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent}.who{color:var(--text2);font-size:14px;margin:0}.car-btn{display:none;position:absolute;top:40%;z-index:2;width:44px;height:44px;border-radius:50%;border:0;background:var(--royal);color:#fff;font-size:28px;line-height:1;cursor:pointer;box-shadow:var(--shadow)}.car-btn.prev{left:-12px}.car-btn.next{right:-12px}@media(min-width:700px){.car-btn{display:block}}.video-grid{display:grid;gap:16px}@media(min-width:700px){.video-grid{grid-template-columns:repeat(2,1fr);gap:24px;padding-bottom:40px}.video-grid .vcell:nth-child(2n){transform:translateY(40px)}}