@font-face{font-family:Poppins;font-weight:400;font-style:normal;font-display:swap;src:url(/fonts/poppins-400.woff2)format("woff2");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}@font-face{font-family:Poppins;font-weight:500;font-style:normal;font-display:swap;src:url(/fonts/poppins-500.woff2)format("woff2");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}@font-face{font-family:Poppins;font-weight:600;font-style:normal;font-display:swap;src:url(/fonts/poppins-600.woff2)format("woff2");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}@font-face{font-family:Poppins;font-weight:700;font-style:normal;font-display:swap;src:url(/fonts/poppins-700.woff2)format("woff2");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}@font-face{font-family:Poppins;font-weight:800;font-style:normal;font-display:swap;src:url(/fonts/poppins-800.woff2)format("woff2");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{--font:"Poppins", ui-sans-serif, -apple-system, "SF Pro Text", "Segoe UI", Roboto, "Noto Sans", sans-serif;--r-sm:8px;--r-md:12px;--r-lg:18px;--r-xl:24px;--bg:#f8f9ff;--surface:#fff;--surface-2:#efe9fb;--ink:#241044;--muted:#4b5563;--line:#e7e1f2;--brand:#6a00d4;--btn:#6a00d4;--btn-ink:#fff;--accent:#ffc107;--accent-ink:#241044;--focus:#6a00d4;--good:#0e7a50;--good-bg:#e0f5ec;--on-good:#fff;--bad:#c4264a;--bad-bg:#fdeaee;--on-bad:#fff;--warn-bg:#fff3d1;--hero:linear-gradient(150deg, #3d0880 0%, #4b0a9b 38%, #6a00d4 78%, #2563eb 140%);--shadow:0 4px 18px #30106014;--radius:18px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--bg:#100a1f;--surface:#1c1430;--surface-2:#261b40;--ink:#f8f5ff;--muted:#c5bbd8;--line:#382a50;--brand:#c4a5ff;--btn:#7c3aed;--btn-ink:#fff;--focus:#ffc107;--good:#6ee7b7;--good-bg:#0f2e25;--on-good:#0b1f18;--bad:#ff8fa5;--bad-bg:#3a1220;--on-bad:#2a0610;--warn-bg:#33270f;--hero:linear-gradient(150deg, #1b0a3a 0%, #3a0a80 45%, #5a12c4 85%, #1d4fc9 150%);--shadow:0 4px 18px #0006;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--bg:#100a1f;--surface:#1c1430;--surface-2:#261b40;--ink:#f8f5ff;--muted:#c5bbd8;--line:#382a50;--brand:#c4a5ff;--btn:#7c3aed;--btn-ink:#fff;--focus:#ffc107;--good:#6ee7b7;--good-bg:#0f2e25;--on-good:#0b1f18;--bad:#ff8fa5;--bad-bg:#3a1220;--on-bad:#2a0610;--warn-bg:#33270f;--hero:linear-gradient(150deg, #1b0a3a 0%, #3a0a80 45%, #5a12c4 85%, #1d4fc9 150%);--shadow:0 4px 18px #0006;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{background:var(--bg);color:var(--ink);font:16px/1.5 var(--font);-webkit-text-size-adjust:100%;margin:0;overflow-x:hidden}h1,h2,h3{letter-spacing:-.015em;margin:0 0 10px;line-height:1.2}h1{font-size:1.65rem;font-weight:800}h2{font-size:1.2rem;font-weight:700}h3{font-size:1.02rem;font-weight:700}p{margin:0 0 12px}a{color:var(--brand)}code{overflow-wrap:anywhere;font-family:ui-monospace,Menlo,Consolas,monospace}.wrap{max-width:560px;margin:0 auto;padding-left:16px;padding-right:16px}.narrow{padding-top:24px;padding-bottom:40px}.narrow-block{max-width:560px}.section{padding-top:18px;padding-bottom:18px}.muted{color:var(--muted)}.hint{color:var(--muted);font-size:.85rem;font-weight:400;display:block}.eyebrow{color:var(--brand);letter-spacing:.08em;text-transform:uppercase;margin:0 0 6px;font-size:.78rem;font-weight:700}.with-tabs{padding-bottom:calc(88px + env(safe-area-inset-bottom))}.demo-banner{background:var(--warn-bg);color:var(--ink);flex-wrap:wrap;justify-content:center;gap:2px 10px;padding:5px 12px;font-size:.78rem;display:flex}.demo-banner .link{color:var(--ink);font-size:.78rem}.demo-banner{z-index:50;position:relative}.site-header{z-index:20;background:var(--hero);color:#fff;padding-top:env(safe-area-inset-top);position:sticky;top:0}.header-row{justify-content:space-between;align-items:center;gap:12px;min-height:56px;display:flex}.brand{color:#fff;letter-spacing:-.02em;align-items:center;gap:10px;font-size:1.15rem;font-weight:800;text-decoration:none;display:flex}.site-header nav{align-items:center;gap:14px;display:flex}.site-header nav a:not(.button){color:#fff;font-weight:650;text-decoration:none}.site-header .button{color:#4b0a9b;background:#fff;border-color:#fff}.tabbar{z-index:30;padding:6px 6px calc(6px + env(safe-area-inset-bottom));background:var(--surface);border-top:1px solid var(--line);justify-content:space-around;display:flex;position:fixed;bottom:0;left:0;right:0}.tabbar a{max-width:96px;color:var(--muted);flex-direction:column;flex:1;align-items:center;gap:2px;padding:4px 0;font-size:.7rem;font-weight:700;text-decoration:none;display:flex}.tabbar .ico{border-radius:15px;place-items:center;width:54px;height:30px;transition:background .15s;display:grid}.tabbar a.active{color:var(--brand)}.tabbar a.active .ico{background:color-mix(in srgb, var(--brand) 16%, transparent)}.button{border:1px solid var(--btn);background:var(--btn);color:var(--btn-ink);font:inherit;cursor:pointer;text-align:center;border-radius:14px;justify-content:center;align-items:center;gap:8px;min-height:48px;padding:12px 20px;font-weight:700;text-decoration:none;display:inline-flex}.button:active{transform:scale(.98)}.button:disabled{opacity:.5;cursor:not-allowed}.button.ghost{color:var(--brand);border-color:color-mix(in srgb, var(--brand) 45%, transparent);background:0 0}.button.small{border-radius:11px;min-height:38px;padding:7px 14px;font-size:.9rem}.button.large{border-radius:16px;min-height:54px;padding:15px 26px;font-size:1.05rem}.button.accent{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);box-shadow:0 8px 20px #ffc10759}.button.block{width:100%;display:flex}.link{color:var(--brand);font:inherit;cursor:pointer;background:0 0;border:0;padding:6px 0;text-decoration:underline}:focus-visible{outline:3px solid var(--focus);outline-offset:2px}.site-header :focus-visible,.hero :focus-visible,.hello :focus-visible,.page-hero :focus-visible{outline-color:var(--accent)}.form{gap:14px;display:grid}.form label,.form fieldset{font-weight:650}input:not([type=checkbox],[type=radio],[type=file]){width:100%;font:inherit;color:var(--ink);background:var(--surface);border:1.5px solid var(--line);border-radius:14px;min-height:50px;margin-top:6px;padding:13px 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12px;padding:0;list-style:none}.rows li{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;padding:12px 0;display:flex}.hero{background:var(--hero);color:#fff;border-radius:0 0 32px 32px;padding:34px 0 44px;position:relative;overflow:hidden}.hero:after{content:"";background:radial-gradient(circle,#ffc10752,#0000 68%);border-radius:50%;width:240px;height:240px;position:absolute;top:-70px;right:-70px}.hero .wrap{z-index:1;position:relative}.hero h1{margin-bottom:14px;font-size:2.15rem;font-weight:850;line-height:1.1}.hero .eyebrow{color:var(--accent)}.lead{color:var(--muted);margin:0 0 22px;font-size:1.05rem}.hero .lead{color:#ffffffd1}.chips{flex-wrap:wrap;gap:8px;margin-bottom:18px;display:flex}.chip{background:#ffffff24;border:1px solid #ffffff38;border-radius:999px;padding:5px 12px;font-size:.82rem;font-weight:700}.features{z-index:2;gap:12px;margin-top:-26px;display:grid;position:relative}.feature{align-items:flex-start;gap:14px;display:flex}.feature p{color:var(--muted);margin:0;font-size:.93rem}.feature h3{margin-bottom:2px}.badge-ico{background:color-mix(in srgb, var(--brand) 14%, transparent);width:44px;height:44px;color:var(--brand);border-radius:14px;flex:none;place-items:center;display:grid}.plan-card{border-top:5px solid var(--accent)}.steps{counter-reset:step;gap:12px;margin:0 0 12px;padding:0;list-style:none;display:grid}.steps li{counter-increment:step;align-items:flex-start;gap:12px;display:flex}.steps li>span{min-width:0}.steps li:before{content:counter(step);background:var(--accent);width:30px;height:30px;color:var(--accent-ink);border-radius:50%;flex:none;place-items:center;font-size:.9rem;font-weight:800;display:grid}.install-tip{background:var(--surface-2);border-radius:16px;align-items:flex-start;gap:12px;margin-top:8px;padding:14px;font-size:.9rem;display:flex}.hello{background:var(--hero);color:#fff;box-shadow:var(--shadow);border-radius:24px;justify-content:space-between;align-items:center;gap:16px;padding:20px;display:flex}.hello h1{margin:0 0 6px;font-size:1.6rem}.hello .eyebrow{color:var(--accent)}.hello p{color:#ffffffd9;margin:0;font-size:.9rem}.hello a{color:var(--accent)}.ring{text-align:center;flex:none;place-items:center;width:92px;height:92px;display:grid;position:relative}.ring svg{width:100%;height:100%;position:absolute;inset:0}.ring-track{stroke:#fff3}.ring-fill{stroke:var(--accent);transition:stroke-dasharray .6s}.ring strong{margin-top:-6px;font-size:1.25rem;line-height:1}.ring small{opacity:.85;font-size:.62rem;position:absolute;bottom:21px}.progress-list{margin:10px 0 0;padding:6px 14px;list-style:none}.progress-list li{border-bottom:1px solid var(--line);padding:10px 0}.progress-list li:last-child{border-bottom:0}.progress-row{justify-content:space-between;gap:12px;margin-bottom:6px;font-size:.92rem;display:flex}.progress-bar{background:var(--line);border-radius:99px;height:8px;overflow:hidden}.progress-bar span{background:var(--accent);border-radius:99px;height:100%;display:block}.quick{grid-template-columns:1fr 1fr;gap:12px;margin:14px 0 4px;display:grid}.quick a{color:var(--ink);align-items:center;gap:12px;padding:14px;text-decoration:none;display:flex}.quick strong{font-size:1.25rem;line-height:1.1;display:block}.quick span{color:var(--muted);font-size:.82rem}.subject{--h:190;border-left:5px solid hsl(var(--h) 60% 45%)}.subject-head{align-items:center;gap:12px;margin-bottom:8px;display:flex}.subject-badge{background:hsl(var(--h) 65% 92%);width:40px;height:40px;color:hsl(var(--h) 60% 28%);border-radius:13px;place-items:center;font-weight:800;display:grid}.subject-head h3{margin:0}.topic-link{color:var(--ink);justify-content:space-between;align-items:center;gap:10px;min-height:40px;text-decoration:none;display:flex}.topic-link small{color:var(--muted);text-align:right}.topic-link .go{color:var(--brand);font-weight:700}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .subject-badge{background:hsl(var(--h) 40% 22%);color:hsl(var(--h) 70% 80%)}}:root[data-theme=dark] .subject-badge{background:hsl(var(--h) 40% 22%);color:hsl(var(--h) 70% 80%)}.table{border-collapse:collapse;background:var(--surface);border:1px solid var(--line);border-radius:14px;width:100%;overflow:hidden}.table th,.table td{text-align:left;border-bottom:1px solid var(--line);padding:10px 12px;font-size:.92rem}.table th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em;font-size:.78rem}.table-scroll{overflow-x:auto}.page-hero{background:var(--hero);color:#fff;box-shadow:var(--shadow);border-radius:24px;margin-bottom:8px;padding:20px}.page-hero h1{margin:0 0 4px}.page-hero .eyebrow{color:var(--accent)}.page-hero p{color:#ffffffd1;margin:0;font-size:.9rem}.lecture{align-items:center;gap:12px;padding:12px;display:flex}.lecture+.lecture{margin-top:10px}.lecture .info{flex:1;min-width:0}.lecture .info strong{overflow-wrap:anywhere;display:block}.play{background:var(--btn);width:46px;height:46px;color:var(--btn-ink);border-radius:50%;flex:none;place-items:center;padding-left:3px;text-decoration:none;display:grid}.play.locked{background:var(--surface-2);color:var(--muted);padding-left:0}.bar{background:var(--surface-2);border-radius:999px;height:7px;margin-bottom:14px;overflow:hidden}.bar span{background:linear-gradient(90deg, var(--brand), var(--accent));border-radius:999px;height:100%;transition:width .4s;display:block}.q-head{justify-content:space-between;align-items:center;margin-bottom:6px;display:flex}.star{cursor:pointer;color:var(--muted);background:0 0;border:0;min-width:48px;min-height:48px;font-size:1.8rem;line-height:1}.star.on{color:var(--accent)}.stem{letter-spacing:-.01em;font-size:1.2rem;font-weight:700;line-height:1.4}.q-image{border-radius:14px;max-width:100%;height:auto;margin-bottom:12px}.options{gap:10px;margin-top:16px;display:grid}.option{text-align:left;width:100%;font:inherit;color:var(--ink);background:var(--surface);border:1.5px solid var(--line);cursor:pointer;min-height:58px;box-shadow:var(--shadow);border-radius:16px;align-items:center;gap:12px;padding:14px;display:flex}.option:active:not(:disabled){transform:scale(.99)}.option:disabled{cursor:default;color:var(--ink)}.option.picked{border-color:var(--brand)}.option.correct{background:var(--good-bg);border-color:var(--good)}.option.wrong{background:var(--bad-bg);border-color:var(--bad)}.letter{background:var(--surface-2);border-radius:50%;flex:none;place-items:center;width:32px;height:32px;font-size:.85rem;font-weight:800;display:grid}.option.correct .letter{background:var(--good);color:var(--on-good)}.option.wrong .letter{background:var(--bad);color:var(--on-bad)}.tag{flex:none;margin-left:auto;font-size:.75rem;font-weight:750}.score{color:var(--brand);margin:0 0 4px;font-size:3rem;font-weight:850}.player{aspect-ratio:16/9;-webkit-user-select:none;user-select:none;box-shadow:var(--shadow);background:#000;border-radius:18px;position:relative;overflow:hidden}.player video{width:100%;height:100%;display:block}.watermark{pointer-events:none;color:#fff;opacity:.55;text-shadow:0 1px 2px #000;white-space:nowrap;z-index:2;-webkit-user-select:none;user-select:none;font-size:clamp(.65rem,2.4vw,.9rem);transition:top 1s,left 1s;position:absolute}.player video{-webkit-touch-callout:none}.shield{z-index:3;cursor:pointer;color:#fff;font:inherit;text-align:center;background:#000;border:0;place-content:center;gap:4px;display:grid;position:absolute;inset:0}.small-print{margin-top:12px;font-size:.82rem}.plan-pick{gap:10px;margin-bottom:20px;display:grid}.plan-option{background:var(--surface);border:1.5px solid var(--line);cursor:pointer;border-radius:16px;align-items:center;gap:12px;padding:14px;display:flex}.plan-option input{flex:none;width:20px;height:20px}.plan-option>span{flex:1}.plan-option.on{border-color:var(--brand);box-shadow:0 0 0 3px color-mix(in srgb, var(--brand) 20%, transparent)}.pay-box{text-align:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);justify-items:center;gap:14px;margin-bottom:20px;padding:18px;display:grid}.pay-box img{background:#fff;border-radius:14px;max-width:100%;height:auto;padding:8px}.pay-box>div{min-width:0}.account-row{align-items:center;gap:12px;display:flex}.avatar{background:var(--hero);color:#fff;border-radius:50%;flex:none;place-items:center;width:48px;height:48px;font-size:1.2rem;font-weight:800;display:grid}.tabs{scrollbar-width:none;gap:8px;margin:0 -16px 16px;padding:2px 16px;display:flex;overflow-x:auto}.tabs::-webkit-scrollbar{display:none}.tabs button{border:1.5px solid var(--line);background:var(--surface);color:var(--ink);font:inherit;cursor:pointer;white-space:nowrap;border-radius:999px;flex:none;min-height:42px;padding:8px 16px;font-weight:650}.tabs button.on{background:var(--btn);border-color:var(--btn);color:var(--btn-ink)}.tabs.small button{min-height:36px;padding:4px 14px;font-size:.9rem}.request-head{justify-content:space-between;gap:12px;display:flex}.utr{font-size:1.15rem;font-weight:700}.grant{border-top:1px solid var(--line);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:8px;padding:8px 0;display:flex}.grant .actions{margin-top:0}.gate{background:var(--hero);place-items:center;min-height:100vh;padding:24px;display:grid}.gate-card{text-align:center;background:var(--surface);border-radius:28px;max-width:420px;padding:32px 28px;box-shadow:0 24px 60px #0000004d}.gate-logo{justify-content:center;margin:0 auto 16px;display:flex}.gate-card img{border:1px solid 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