@font-face{font-family:Outfit;src:url(/fonts/outfit.woff2) format("woff2");font-style:normal;font-weight:400 800;font-display:swap}:root{font-family:Outfit,system-ui,sans-serif;color:#14161a;background:#fff;font-synthesis:none;--blue:#2745f0;--green:#12a150;--amber:#f5a524;--red:#e5484d;--locked:#5b6373;--canvas:#f4f5f8;--muted:#8b93a2;--text2:#5a6273;--line:#e3e6ec}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0}a{color:inherit}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.overline{font-size:10.5px;font-weight:700;letter-spacing:.15em;color:var(--muted)}.overline.blue{color:var(--blue)}.button{min-height:60px;padding:0 34px;border:0;border-radius:18px;display:inline-flex;align-items:center;justify-content:center;text-decoration:none;font-size:18px;font-weight:700}.button.small{min-height:44px;padding:0 22px;border-radius:14px;font-size:15px}.button.primary{background:var(--blue);color:#fff;box-shadow:0 8px 22px #14161a29}.button.inverse{background:#fff;color:var(--blue)}.button.secondary{background:#fff;color:#14161a;border:2px solid var(--line);box-shadow:none}.button.full{width:100%}.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-size:13px;font-weight:800;letter-spacing:.09em;white-space:nowrap}.brand-mobile{display:none}.brand-mark{width:26px;height:26px;border-radius:8px;background:var(--blue);display:grid;place-items:center;color:#fff;font-size:14px}.language-toggle{display:flex;border:1.5px solid var(--line);border-radius:999px;overflow:hidden;flex:none}.language-toggle button{min-width:43px;height:34px;padding:0 12px;border:0;background:transparent;color:var(--muted);font-size:11.5px;font-weight:700;letter-spacing:.04em}.language-toggle button.active{background:var(--blue);color:#fff}.landing{min-height:100vh;background:#fff}.landing-header{height:70px;border-bottom:1.5px solid #edeff3;display:flex;align-items:center;justify-content:space-between;gap:26px;padding:0 40px;position:sticky;top:0;background:#fff;z-index:10}.landing-header nav{display:flex;gap:22px;margin-left:auto}.landing-header nav a{text-decoration:none;font-size:14px;font-weight:600;color:var(--text2)}.landing-hero{max-width:1100px;margin:auto;padding:64px 40px 56px;display:grid;grid-template-columns:1.06fr .94fr;gap:60px;align-items:center}.landing-hero h1{font-size:58px;line-height:1;font-weight:800;letter-spacing:-.04em;margin:0 0 18px;text-wrap:pretty}.landing-hero>div>p{font-size:19px;line-height:1.5;color:var(--text2);margin:0 0 30px;font-weight:500;max-width:26em}.hero-action{display:flex;align-items:center;gap:18px}.mobile-action{display:none}.hero-action span{font-size:14px;color:var(--muted);font-weight:500}.mastery-card{background:#fff;border-radius:24px;padding:24px;box-shadow:0 1px 2px #10141e0d}.landing-hero .mastery-card{border:2px solid #edeff3;border-radius:26px;padding:26px;background:#fafbfc}.mastery-number{display:flex;align-items:baseline;gap:9px}.mastery-number strong{font-size:56px;font-weight:800;letter-spacing:-.04em;line-height:1}.mastery-number span{font-size:22px;font-weight:700;color:#9aa1af}.mastery-card>.overline{margin:5px 0 18px}.dot-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:6px}.dot-grid span{display:block;width:100%;aspect-ratio:1;border-radius:3px;background:#e4e7ec}.dot-grid span.filled{background:var(--blue)}.dot-grid span.fresh{background:var(--green);box-shadow:0 0 0 2px #12a15038}.mastery-details{display:flex;justify-content:space-between;font-size:12.5px;font-weight:600;color:var(--muted);margin-top:16px}.how{border-top:2px solid #f0f2f5;max-width:1100px;margin:auto;padding:52px 40px}.how>.overline{margin-bottom:22px}.how-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:36px}.how article>span{width:38px;height:38px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-size:15px;font-weight:800;margin-bottom:14px}.how h2{font-size:19px;font-weight:800;letter-spacing:-.02em;margin:0 0 5px}.how p{font-size:14.5px;color:#6b7382;line-height:1.5;margin:0}.landing-cta{background:var(--blue);color:#fff;padding:56px 40px;display:flex;align-items:center;justify-content:center;gap:80px}.landing-cta h2{font-size:38px;font-weight:800;letter-spacing:-.03em;line-height:1.1;max-width:15em;margin:0}.app-shell{height:100vh;display:flex;background:var(--canvas);overflow:hidden}.side-nav{width:238px;flex:none;background:#fff;border-right:1.5px solid #e7e9ee;display:flex;flex-direction:column;padding:20px 14px}.side-nav>.brand{font-size:11.5px;padding:0 8px 20px}.side-nav .brand-mark{width:24px;height:24px;font-size:13px}.app-nav{display:flex;flex-direction:column;gap:4px}.app-nav a{display:flex;align-items:center;gap:12px;width:100%;min-height:45px;padding:11px 12px;border-radius:12px;text-decoration:none;font-size:14.5px;font-weight:600;color:#6b7382}.app-nav a.active{background:#eef1fe;color:var(--blue);font-weight:700}.side-progress{margin-top:auto;background:var(--canvas);border-radius:16px;padding:14px 15px}.side-progress>div:nth-child(2){display:flex;align-items:baseline;gap:5px;margin:6px 0 8px}.side-progress strong{font-size:24px;font-weight:800}.side-progress span{font-size:14px;font-weight:700;color:#9aa1af}.side-progress p{font-size:12.5px;font-weight:700;color:#b36a00;margin:0}.app-content{flex:1;overflow:auto;min-width:0}.mobile-nav{display:none}.page{max-width:968px;padding:36px 44px 48px}.page h1{font-size:30px;font-weight:800;letter-spacing:-.03em;margin:0}.dashboard-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.streak{display:none;background:#fff3e0;color:#b36a00;padding:6px 11px;border-radius:999px;font-weight:700}.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.current-card{background:#fff;border-radius:24px;padding:24px;box-shadow:0 1px 2px #10141e0d}.current-card h2{font-size:26px;font-weight:800;letter-spacing:-.025em;margin:5px 0 4px}.current-card p{font-size:14px;font-weight:600;color:var(--muted);margin:0 0 16px}.ticks{display:flex;gap:4px;margin-bottom:22px}.ticks span{flex:1;height:8px;border-radius:4px;background:#e4e7ec}.ticks span.filled{background:var(--blue)}.current-card .secondary{min-height:50px;margin-top:10px;font-size:14.5px}.desktop-heading{margin-bottom:24px}.desktop-heading p,.mobile-page-head p{font-size:14px;color:var(--muted);font-weight:600;margin:4px 0 0}.mobile-page-head{display:none}.level-path{display:grid;grid-template-columns:1fr 1fr;gap:12px}.level-row{display:flex;align-items:stretch;gap:12px}.level-node{width:42px;height:42px;flex:none;border-radius:15px;display:grid;place-items:center;font-size:15px;font-weight:800;align-self:center;position:relative;z-index:1}.level-card{flex:1;min-width:0;display:flex;align-items:center;gap:12px;background:#fff;border-radius:18px;padding:15px 16px;border:2px solid transparent;box-shadow:0 1px 2px #10141e0d}.level-card>div{flex:1;min-width:0}.level-card h2{font-size:17px;font-weight:800;letter-spacing:-.015em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0}.level-card p{font-size:12.5px;font-weight:600;color:var(--muted);margin:1px 0 0}.level-card>b{font-size:10.5px;color:var(--blue);letter-spacing:.1em}.level-row.done .level-node{background:var(--blue);color:#fff}.level-row.done .level-card>b{color:var(--green);font-size:16px}.level-row.active .level-node{background:#fff;color:var(--blue);border:3px solid var(--blue);box-shadow:0 4px 14px #2745f040}.level-row.active .level-card{border-color:var(--blue)}.level-row.locked .level-node{background:#e8eaef;color:#9aa1af}.level-row.locked .level-card{background:#eceef2;box-shadow:none}.level-row.locked h2{color:#9aa1af}.level-row.locked p{color:#a8aeba}.session-page{height:100vh;background:var(--canvas);color:#14161a;position:relative;overflow:hidden}.session-header{height:64px;padding:14px 18px 12px;background:#fff;display:flex;align-items:center;gap:12px;border-bottom:1.5px solid #e7e9ee}.session-header>button{width:34px;height:34px;flex:none;border:0;border-radius:11px;background:#f1f3f7;color:var(--text2);display:grid;place-items:center}.session-header>b{font-size:12.5px;color:var(--muted);white-space:nowrap}.session-steps{flex:1;display:flex;gap:5px}.session-steps span{flex:1;height:6px;border-radius:3px;background:#e4e7ec}.session-steps span.active{background:var(--blue)}.session-body{max-width:720px;height:calc(100vh - 64px);overflow:auto;margin:0 auto;padding:28px 44px 140px}.session-body>h1{font-size:32px;font-weight:800;letter-spacing:-.03em;line-height:1.15;margin:0 0 6px}.subprompt{font-size:16px;color:var(--muted);font-weight:500;margin:0}.teach>.overline{margin-bottom:14px}.image-placeholder{height:210px;border-radius:22px;background:#e9ecf1;border:2px dashed #d3d8e0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;color:#9aa1af}.image-placeholder span{font-size:11px;font-weight:600;letter-spacing:.08em}.teach-word{display:flex;align-items:center;justify-content:space-between;gap:18px;margin:22px 0}.teach-word h1{font-size:52px;font-weight:800;letter-spacing:-.04em;line-height:1;margin:0}.teach-word p{font-size:21px;color:#6b7382;font-weight:500;margin:3px 0 0}.audio-button{width:58px;height:58px;flex:none;border:2px solid var(--blue);border-radius:19px;background:#eef1fe;color:var(--blue);display:grid;place-items:center}.audio-button.large{width:120px;height:120px;border:0;border-radius:40px;background:var(--blue);color:#fff;box-shadow:0 10px 26px #2745f04d}.audio-button.large svg{width:48px;height:48px}.example-card{background:#fff;border-radius:20px;padding:20px 24px;box-shadow:0 1px 2px #10141e0d}.example-card h2{font-size:24px;font-weight:700;letter-spacing:-.015em;line-height:1.3;margin:9px 0 0}.example-card p{font-size:16px;color:var(--muted);font-weight:500;margin:4px 0 0}.session-footer{position:absolute;left:0;right:0;bottom:0;padding:16px 20px 20px;background:#fff;border-top:1.5px solid #e7e9ee}.session-footer button{max-width:640px;margin:auto;display:flex}.exercise-image{height:200px;max-width:420px;margin-bottom:24px}.audio-lead{margin-bottom:26px}.answer-list{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}.answer-list button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;min-height:64px;padding:0 20px;border-radius:18px;font-size:20px;font-weight:700;letter-spacing:-.01em;text-align:left;background:#fff;border:2px solid var(--line);color:#14161a;box-shadow:0 1px 2px #10141e0d}.answer-list button.correct{background:#e8f6ee;border-color:var(--green);color:#0b6b36}.answer-list button.wrong{background:#fdecec;border-color:var(--red);color:#a32126}.answer-list button.dim{opacity:.45}.feedback-sheet{position:absolute;left:50%;transform:translate(-50%);width:min(632px,calc(100% - 40px));bottom:22px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;padding:16px 18px;border-radius:20px;border:2px solid;animation:sheet-up .22s ease-out both}.feedback-sheet.correct{background:#e8f6ee;border-color:var(--green)}.feedback-sheet.wrong{background:#fdecec;border-color:var(--red)}.feedback-title{display:flex;align-items:center;gap:12px}.feedback-title>span{width:30px;height:30px;border-radius:50%;display:grid;place-items:center;color:#fff;font-size:17px;font-weight:800}.correct .feedback-title>span,.correct.feedback-sheet>button{background:var(--green)}.wrong .feedback-title>span,.wrong.feedback-sheet>button{background:var(--red)}.feedback-title strong{font-size:20px}.correct .feedback-title strong{color:#0b6b36}.wrong .feedback-title strong{color:#a32126}.feedback-word{display:flex;align-items:baseline;gap:10px}.feedback-word b{font-size:24px}.feedback-word span{font-size:17px;color:var(--text2)}.feedback-sheet>button{height:50px;padding:0 30px;border:0;border-radius:16px;color:#fff;font-size:16px;font-weight:700}.results-page{min-height:100vh;background:var(--canvas);padding:40px 44px 48px;max-width:none}.results-page>*{max-width:720px;margin-left:auto;margin-right:auto}.result-check{width:64px;height:64px;border-radius:24px;background:var(--green);color:#fff;display:grid;place-items:center;margin-bottom:18px}.result-check svg{width:34px;height:34px;stroke-width:3.2}.results-page h1{font-size:40px;font-weight:800;letter-spacing:-.035em;margin-top:0;margin-bottom:6px}.results-page>p{font-size:17px;color:#6b7382;font-weight:500;margin-top:0;margin-bottom:26px}.results-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.result-count{display:flex;align-items:center;gap:12px;margin-bottom:4px}.result-count span{font-size:30px;font-weight:700;color:#b4bac6}.result-count b{font-size:22px;color:var(--green)}.result-count strong{font-size:44px;color:var(--green)}.mastered-word{display:flex;align-items:center;gap:12px;background:#fff;border-radius:16px;padding:15px 16px;margin-top:8px}.mastered-word>span{width:20px;height:20px;border-radius:50%;display:grid;place-items:center;background:var(--green);color:#fff}.mastered-word b{font-size:17px}.mastered-word small{font-size:15px;color:var(--muted)}.results-grid .button{margin-top:14px}.words-page>label{display:grid;gap:6px;font-weight:700;margin-top:24px}.words-page input{min-height:50px;border:1.5px solid var(--line);border-radius:14px;padding:0 15px}.word-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:18px}.word-grid>a{display:flex;flex-direction:column;text-decoration:none;background:#fff;border-radius:18px;padding:18px;box-shadow:0 1px 2px #10141e0d}.word-grid b{font-size:21px}.word-grid span{color:var(--blue)}.word-grid small{color:var(--muted);margin-top:10px}.detail-page>.overline{margin-top:32px}.detail-page h1{font-size:64px;margin:8px 0 0}.detail-page h2{font-size:26px;color:var(--text2);margin:0 0 20px}.detail-page .example-card{margin-top:24px;max-width:560px}.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:20px}.stat-grid article,.tools-card{background:#fff;border-radius:18px;padding:20px}.stat-grid article{display:flex;flex-direction:column}.stat-grid strong{font-size:32px}.stat-grid span{color:var(--muted)}.progress-page>.mastery-card{margin-top:24px}.tools-card{margin-top:20px}.tools-card button,.tools-card label{display:inline-flex;min-height:48px;align-items:center;border:1.5px solid var(--line);border-radius:14px;background:#fff;padding:0 16px;font-weight:700;margin:8px 8px 0 0}.tools-card .danger{color:#a32126}.seo-page{max-width:760px;margin:auto;padding:80px 40px}.seo-page h1{font-size:58px;letter-spacing:-.04em;line-height:1;margin:14px 0}.seo-page p{font-size:18px;color:var(--text2);line-height:1.6}.center-card{min-height:100vh;display:grid;place-content:center;text-align:center;padding:24px}.center-card h1{font-size:36px}.center-card p{color:var(--muted)}@keyframes sheet-up{0%{transform:translate(-50%,26px)}to{transform:translate(-50%)}}:focus-visible{outline:3px solid #f5a524;outline-offset:3px}@media(max-width:760px){.landing-header{height:auto;padding:16px 20px;border:0}.landing-header .brand span:last-child{font-size:11.5px}.landing-header nav,.landing-header>.button{display:none}.landing-hero{padding:26px 20px 8px;display:block}.landing-hero h1{font-size:38px;line-height:1.03;letter-spacing:-.03em;margin-bottom:14px}.landing-hero>div>p{font-size:16px;margin-bottom:22px}.landing-hero .mastery-card{border-radius:22px;padding:20px}.landing-hero .mastery-number strong{font-size:40px}.landing-hero .mastery-number span{font-size:19px}.hero-action{display:flex;flex-direction:column;gap:11px;margin-top:20px}.hero-action .button{width:100%}.hero-action span{font-size:12.5px}.how{margin:28px 20px 0;padding:24px 0 0}.how-grid{display:flex;flex-direction:column;gap:14px}.how article{display:flex;gap:14px;align-items:flex-start}.how article>span{width:34px;height:34px;flex:none;border-radius:11px;background:#eef1fe;color:var(--blue);margin:0}.how h2{font-size:16px;margin-bottom:2px}.how p{font-size:13.5px}.landing-cta{margin-top:30px;padding:26px 20px 30px;display:block}.landing-cta h2{font-size:24px;margin-bottom:16px}.landing-cta .button{width:100%;min-height:56px}.app-shell{display:block;height:100vh}.side-nav{display:none}.app-content{height:calc(100vh - 70px);overflow:auto}.mobile-nav{display:block;position:fixed;left:0;right:0;bottom:0;height:70px;background:#fff;border-top:1.5px solid #e7e9ee;z-index:10}.mobile-nav .app-nav{height:100%;flex-direction:row;gap:0}.mobile-nav .app-nav a{flex:1;min-width:0;height:100%;padding:6px 0;display:flex;flex-direction:column;justify-content:center;gap:3px;border-radius:0;font-size:10.5px;color:#98a0b0}.mobile-nav .app-nav a.active{background:none;color:var(--blue)}.page{padding:18px 20px 24px;max-width:none}.dashboard-title{margin-bottom:18px}.dashboard-title h1{font-size:22px}.streak{display:inline-flex}.dashboard-grid{display:block}.mastery-card{border-radius:22px;padding:20px}.mastery-number strong{font-size:52px}.current-card{border-radius:22px;padding:20px;margin-top:26px}.current-card:before{content:"CURRENT LEVEL";display:block;font-size:10px;font-weight:700;letter-spacing:.15em;color:var(--muted);position:absolute;transform:translateY(-48px)}.current-card h2{font-size:21px}.current-card .secondary,.desktop-heading{display:none}.levels-page{padding:0 0 26px}.mobile-page-head{display:flex;align-items:center;gap:14px;background:#fff;border-bottom:1.5px solid #e7e9ee;padding:16px 20px 14px}.mobile-page-head>a{width:36px;height:36px;border-radius:12px;background:#f1f3f7;display:grid;place-items:center}.mobile-page-head h1{font-size:19px}.mobile-page-head p{font-size:12px}.level-path{display:flex;flex-direction:column;gap:10px;padding:18px 20px;position:relative}.level-path:before{content:"";position:absolute;left:39px;top:30px;bottom:30px;width:3px;background:#e1e4ea}.level-row{gap:14px}.level-card{padding:15px 16px}.session-body{height:calc(100vh - 64px);padding:22px 20px 150px}.session-body>h1{font-size:26px;line-height:1.2}.teach-word h1{font-size:46px}.image-placeholder{height:186px}.example-card{padding:18px 20px}.example-card h2{font-size:21px}.exercise-image{height:168px;max-width:none}.audio-lead{display:flex;justify-content:center}.audio-button.large{width:132px;height:132px;border-radius:44px}.answer-list{display:flex;flex-direction:column;gap:11px;margin-top:20px}.answer-list button{min-height:64px}.feedback-sheet{left:0;right:0;bottom:0;width:100%;transform:none;display:block;border-left:0;border-right:0;border-bottom:0;border-radius:24px 24px 0 0;padding:20px 20px 22px;animation:mobile-sheet .22s ease-out both}.feedback-title{margin-bottom:12px}.feedback-word{margin-bottom:16px}.feedback-word b{font-size:30px}.feedback-word span{font-size:19px}.feedback-sheet>button{width:100%;height:58px}.results-page{padding:30px 20px 90px}.results-page>*{max-width:none}.results-page h1{font-size:34px}.results-page>p{font-size:16px}.results-grid{display:block}.results-grid>section+section{margin-top:24px}.results-grid .button{min-height:60px}.word-grid{grid-template-columns:1fr 1fr}.detail-page h1{font-size:48px}.progress-page{padding-bottom:90px}.seo-page{padding:48px 20px}.seo-page h1{font-size:40px}.seo-page .button{width:100%}@keyframes mobile-sheet{0%{transform:translateY(26px)}to{transform:translateY(0)}}}@media(max-width:390px){.landing-hero h1{font-size:35px}.dot-grid{gap:5px}.word-grid{grid-template-columns:1fr}}@media(max-width:760px){.brand-full{display:none}.brand-mobile{display:inline}.desktop-action{display:none}.mobile-action{display:flex}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;animation:none!important;transition:none!important}}
