:root{--blue:#087bec;--navy:#142443;--mint:#41dbbb;--bg:#f5f8fc;--muted:#6b7890;--line:#e4ebf4;--shadow:0 12px 32px #182d4d08;--radius:24px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--navy);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer;border:0}button:disabled{opacity:.55;cursor:default}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #09a9f9;outline-offset:3px}button,input,select{min-height:46px}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(30px,3.4vw,46px);line-height:1.1;letter-spacing:-1.8px;margin-bottom:16px}h2{font-size:24px;letter-spacing:-.6px}h3{font-size:19px;margin-bottom:10px}p{line-height:1.6}.shell{max-width:1600px;margin:auto;display:flex;min-height:100vh}.sidebar{width:238px;padding:32px 24px;background:white;border-right:1px solid var(--line);position:fixed;inset:0 auto 0 max(0px,calc((100vw - 1600px)/2));display:flex;flex-direction:column}.brand{display:flex;align-items:center;gap:10px;font-size:24px;font-weight:850;letter-spacing:-1px}.brand img{width:44px;height:44px;object-fit:cover;border-radius:15px}.brand-tag{font-size:13px;color:var(--muted);margin:12px 0 38px}.desktop-nav{display:grid;gap:9px}.desktop-nav a{display:flex;align-items:center;gap:13px;padding:14px 18px;border-radius:14px;font-weight:650;color:var(--muted);font-size:14px}.desktop-nav a.active{background:#eaf4ff;color:var(--blue)}.nav-icon{font-size:20px}.side-note{margin-top:auto;border:1px solid var(--line);border-radius:18px;padding:18px;background:#fafcff}.side-note span{font-size:26px;color:var(--blue)}.side-note p{font-size:12px;color:var(--muted);margin:8px 0 0}.account-link{display:flex;justify-content:space-between;margin-top:25px;font-size:14px;font-weight:650}.workspace{margin-left:238px;width:calc(100% - 238px)}.topbar{height:90px;border-bottom:1px solid var(--line);padding:0 48px;display:flex;align-items:center;justify-content:space-between;background:#ffffffa6}.eyebrow{font-size:11px;letter-spacing:1.7px;font-weight:750;color:var(--muted)}.top-actions{display:flex;gap:14px;align-items:center}.pill{background:white;border:1px solid var(--line);border-radius:100px;padding:10px 15px;font-size:13px;font-weight:700}.avatar{width:40px;height:40px;display:grid;place-items:center;border-radius:50%;background:#dcecff;color:var(--blue);font-weight:800}.mobile-brand{display:none}main{padding:38px 48px;max-width:1240px;margin:auto}footer{padding:15px 48px 32px;font-size:12px;color:var(--muted);display:flex;gap:5px;flex-wrap:wrap}#sync-status{margin-left:auto}.page-heading{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.page-heading p{color:var(--muted);margin:0}.page-heading h1{font-size:34px;margin-bottom:10px}.tag{display:inline-block;background:#eaf4ff;color:var(--blue);padding:7px 11px;border-radius:9px;font-size:11px;font-weight:750}.hero{border-radius:28px;background:linear-gradient(118deg,#eaf5ff 0%,#e2f8f3 100%);min-height:260px;padding:32px;display:flex;align-items:center;justify-content:space-between;position:relative;overflow:hidden;margin-bottom:24px}.hero-copy{max-width:520px;position:relative;z-index:1}.hero .eyebrow{color:#167b9a}.hero p{color:#5b7286;max-width:410px;font-size:14px;margin-bottom:20px}.hero-logo{width:180px;height:180px;object-fit:cover;border-radius:50%;border:8px solid #ffffff6b;box-shadow:0 10px 30px #067fac20;transform:rotate(5deg);margin:15px 5px 15px 24px}.primary{background:var(--blue);color:white;border-radius:13px;padding:13px 20px;font-weight:750;box-shadow:0 5px 0 #0464bd;font-size:14px;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px}.primary:hover{background:#096cce}.secondary{background:white;color:var(--navy);border:1px solid var(--line);border-radius:13px;padding:12px 18px;font-weight:650;font-size:14px}.soft-btn{background:#eaf4ff;color:var(--blue);padding:10px 15px;border-radius:12px;font-weight:700}.link-btn{background:none;color:var(--blue);padding:6px;font-weight:650;font-size:13px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:30px}.stat{border:1px solid var(--line);background:white;border-radius:18px;padding:20px;display:flex;gap:14px;align-items:center}.stat-icon{height:45px;width:45px;border-radius:13px;background:#fff5e7;display:grid;place-items:center;font-size:23px}.stat:nth-child(2) .stat-icon{background:#e9f9f3}.stat:nth-child(3) .stat-icon{background:#eff0ff}.stat strong{font-size:25px;display:block}.stat small{color:var(--muted);font-size:12px}.columns{display:grid;grid-template-columns:1.55fr 1fr;gap:24px}.card{background:white;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);margin-bottom:20px}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.card-header h2{font-size:19px;margin:0}.course-step{display:flex;gap:16px;align-items:center;border:1px solid var(--line);padding:18px;border-radius:18px;margin-bottom:12px;background:white}.step-num{width:44px;height:44px;background:#eaf4ff;color:var(--blue);border-radius:14px;display:grid;place-items:center;font-weight:800;flex-shrink:0}.course-step.done .step-num{background:#e1f7ec;color:#138957}.course-step .copy{flex:1}.course-step h3{font-size:15px;margin-bottom:5px}.course-step p{font-size:12px;color:var(--muted);margin:0}.circle-arrow{color:var(--blue);font-size:22px}.challenge{background:#122743;color:white;position:relative;overflow:hidden}.challenge .eyebrow{color:#8cc8e7}.challenge p{color:#b4c5d9;font-size:13px}.challenge h3{font-size:24px;line-height:1.25}.challenge .primary{background:var(--mint);color:#103d42;box-shadow:0 4px 0 #28a68c}.day-strip{display:flex;justify-content:space-between;gap:6px;margin:18px 0}.day-box{display:grid;place-items:center;gap:9px;font-size:10px;color:var(--muted)}.day-circle{width:30px;height:30px;border-radius:50%;background:#edf1f7;display:grid;place-items:center;color:#a4aebe}.day-box.done .day-circle{background:#dff7ef;color:#17865e}.day-box.today .day-circle{border:2px solid var(--blue)}.small{font-size:12px;color:var(--muted);line-height:1.55}.muted{color:var(--muted)}.progress-track{height:8px;border-radius:9px;background:#e9eef6;overflow:hidden;margin:12px 0}.progress-fill{background:var(--blue);height:100%;border-radius:9px}.block-header{display:flex;gap:14px;align-items:center;margin:28px 0 15px}.block-header span{background:#dceeff;color:var(--blue);font-size:14px;padding:10px 14px;border-radius:13px}.block-header h2{font-size:21px;margin:0}.lesson-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.lesson-grid .course-step{margin:0;min-height:96px}.searchbar{display:flex;gap:10px;margin-bottom:18px}input,select,textarea{width:100%;padding:12px 14px;border:1px solid #d7e1ee;border-radius:12px;background:white;color:var(--navy)}textarea{min-height:140px;resize:vertical}label{display:block;font-size:13px;font-weight:650;margin:16px 0 8px}label input,label select,label textarea{margin-top:8px}input::placeholder,textarea::placeholder{color:#8998ad}.lesson-back{display:inline-flex;align-items:center;color:var(--muted);gap:8px;font-size:13px;margin-bottom:22px}.lesson-page{max-width:780px;margin:auto}.lesson-page h1{font-size:34px}.structure{padding:15px 18px;background:#f4f8ff;border-left:3px solid var(--blue);border-radius:0 12px 12px 0;font-size:14px;line-height:1.6;margin:18px 0}.example{background:#eafaF5;border-radius:16px;padding:20px;margin:18px 0}.example .english{font-weight:700;font-size:19px;line-height:1.55}.example .spanish{font-size:14px;color:#4e796e;margin:10px 0}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.choices{display:grid;gap:10px;margin:20px 0}.choice{background:white;border:2px solid var(--line);border-radius:14px;text-align:left;padding:15px 18px;color:var(--navy);line-height:1.4}.choice:hover{border-color:#99caff;background:#f2f8ff}.choice.correct{border-color:#21b881;background:#eafaF4}.choice.wrong{border-color:#e4a17e;background:#fff6ee}.feedback{padding:18px;border-radius:15px;line-height:1.6;background:#eafaF4;margin-bottom:18px}.feedback.error{background:#fff6ee}.success-card{text-align:center;padding:40px}.success-card .big-emoji{font-size:56px;display:block;margin-bottom:20px}.table-wrap{overflow:auto;border-radius:12px;margin:16px 0}table{border-collapse:collapse;width:100%;font-size:13px}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}th{background:#f4f8fc;font-size:12px}td{line-height:1.6}details{border-top:1px solid var(--line);padding-top:18px;margin-top:24px}summary{cursor:pointer;font-weight:700;list-style-position:inside}.extra{font-size:14px;line-height:1.7;padding-top:15px}.extra h4,.extra h5{font-size:18px}.extra p{white-space:pre-line}.extra a{color:var(--blue)}.twister-text{white-space:pre-line;font-size:22px;line-height:1.7;font-weight:650;margin:24px 0}.chips{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}.chip{padding:9px 12px;border-radius:12px;font-size:12px;background:white;border:1px solid var(--line)}.chip.active{background:#eaf4ff;color:var(--blue);border-color:#9cc7f3}.notice{padding:15px 18px;border-radius:14px;background:#edf6ff;color:#345d88;font-size:13px;line-height:1.6;margin:18px 0}.badge-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.badge{border:1px solid var(--line);border-radius:18px;text-align:center;padding:20px 10px;opacity:.5}.badge.earned{opacity:1;background:#f0faf5;border-color:#b8e7d5}.badge span{font-size:34px;display:block;margin-bottom:9px}.badge strong{font-size:12px}.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.auth-tabs{display:flex;gap:8px;margin:14px 0}.error-text{color:#a44226;font-size:13px}.mobile-nav{display:none}dialog{border:0;border-radius:28px;padding:0;max-width:480px;width:calc(100% - 32px);box-shadow:0 20px 80px #132d4450;max-height:92dvh;overflow:auto;color:var(--navy)}dialog::backdrop{background:#182d4d85;backdrop-filter:blur(5px)}.dialog-content{padding:30px}.dialog-content h1{font-size:34px;margin:12px 0}.dialog-content>p{font-size:14px;color:var(--muted)}.welcome-logo{width:70px;height:70px;border-radius:20px;float:right}.dialog-content .primary{width:100%;margin-top:20px}#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--navy);color:white;border-radius:14px;padding:14px 22px;font-size:13px;max-width:calc(100vw - 32px);box-shadow:0 10px 30px #0002;z-index:1000;opacity:0;pointer-events:none;transition:opacity .15s}#toast.visible{opacity:1}.mono{font-family:ui-monospace,monospace;overflow-wrap:anywhere}.empty{text-align:center;padding:36px;color:var(--muted)}.translate-output{white-space:pre-wrap;font-size:20px;line-height:1.6;min-height:110px}.full{width:100%}.helper{padding:12px;background:#f8fafc;border-radius:12px;font-size:12px;line-height:1.6}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1400px){main{padding-top:48px}.hero{min-height:280px}.hero-logo{width:210px;height:210px}}
@media(max-width:1100px){.sidebar{width:205px;padding:28px 18px}.workspace{margin-left:205px;width:calc(100% - 205px)}main{padding:30px}.topbar{padding:0 30px}.columns{grid-template-columns:1.4fr 1fr}.hero-logo{width:135px;height:135px}.hero{padding:25px}.stat{padding:16px;gap:10px}.stat-icon{width:38px;height:38px}.stat strong{font-size:21px}}
@media(max-width:800px){.sidebar{display:none}.workspace{margin-left:0;width:100%}.topbar{height:73px;padding:0 22px}.desktop-only{display:none}.mobile-brand{display:block;font-weight:850;font-size:23px;color:var(--blue);letter-spacing:-.8px}main{padding:24px 20px 95px}.hero{padding:25px;min-height:240px;align-items:flex-start}.hero h1{font-size:32px}.hero-logo{width:95px;height:95px;position:absolute;right:18px;top:15px;opacity:.28;border:4px solid white}.hero-copy{max-width:100%}.hero p{max-width:80%}.columns{grid-template-columns:1fr}.stats{gap:9px;margin-bottom:24px}.stat{padding:15px 10px;display:block}.stat-icon{width:33px;height:33px;font-size:18px;margin-bottom:10px}.stat strong{font-size:21px}.stat small{font-size:10px}.card{padding:22px}.profile-grid{grid-template-columns:1fr}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#ffffffed;backdrop-filter:blur(12px);border-top:1px solid var(--line);padding:10px 8px max(12px,env(safe-area-inset-bottom));z-index:20;justify-content:space-around}.mobile-nav a{display:grid;justify-items:center;gap:5px;font-size:10px;color:var(--muted);min-width:54px;padding:4px}.mobile-nav a.active{color:var(--blue);font-weight:750}.nav-icon{font-size:21px}.lesson-grid{grid-template-columns:1fr}.page-heading{gap:12px}.page-heading h1{font-size:30px}footer{padding:0 20px 100px}.badge-grid{grid-template-columns:repeat(2,1fr)}.lesson-page h1{font-size:29px}.twister-text{font-size:18px}#toast{bottom:95px}.top-actions{gap:9px}.pill{font-size:12px;padding:8px 11px}.avatar{height:35px;width:35px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}