:root{--green:#244c40;--orange:#ec8154;--cream:#f8f9f5;--ink:#263f36;--muted:#7b867f;--line:#e5e9e1}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font:15px/1.55 'Segoe UI',Arial,sans-serif}button,input,select{font:inherit}button,a{-webkit-tap-highlight-color:transparent}button{cursor:pointer}a{color:inherit;text-decoration:none}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #df9b2d;outline-offset:4px}.sidebar{width:250px;position:fixed;inset:0 auto 0 0;background:#fff;border-right:1px solid var(--line);padding:36px 24px 22px;display:flex;flex-direction:column}.brand{display:flex;gap:10px;align-items:center;font-weight:800;font-size:25px;letter-spacing:-1px}.brand-icon{font-size:49px;color:var(--orange);line-height:1}.brand small{display:block;font-size:8px;letter-spacing:2px;color:#829185}.learner{display:flex;align-items:center;gap:10px;margin:36px 0 29px;background:#f6f7f2;border-radius:15px;padding:12px 10px}.avatar{background:#f5dfba;border-radius:50%;font-size:29px;padding:3px 8px}.learner strong{font-size:12px;display:block;max-width:136px;overflow-wrap:anywhere}.learner small{font-size:10px;color:var(--muted)}.nav-label{font-size:10px;font-weight:700;letter-spacing:1.6px;color:#9a9f97;padding:0 13px 12px}nav{display:grid;gap:8px}nav a{display:flex;align-items:center;gap:14px;padding:12px 15px;border-radius:11px;font-size:23px;color:#8b958c}nav a span{font-size:13px;font-weight:600}nav a.active{background:#eaf1e9;color:var(--green)}.side-note{margin-top:auto;padding:25px 17px;background:#f5f5e9;border-radius:16px;position:relative}.side-note>span{display:block;font-size:28px;margin-bottom:10px}.side-note strong{font-size:16px}.side-note p{font-size:11px;color:var(--muted);margin-bottom:0}.parent-link{border:0;background:none;text-align:left;margin-top:26px;color:#6e7d73;font-size:12px}.parent-link span{float:right}.local-note{font-size:9px;color:#9ba69c;margin:15px 0 0 8px}.workspace{margin-left:250px}header{height:86px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 43px;background:#fff9}.breadcrumb{font-size:12px;color:#8b948c}.breadcrumb span{margin:0 14px;color:#c3c9c2}.breadcrumb strong{color:#56685e;font-weight:500}.header-stats{display:flex;gap:20px;align-items:center;font-size:12px;font-weight:600}.mini-avatar{background:#f5e5cd;border-radius:50%;font-size:24px;padding:3px 9px}main{max-width:1310px;padding:32px 43px 24px;margin:auto}h1,h2,h3,p{margin-top:0}h1{font-size:29px;letter-spacing:-.8px;line-height:1.3;margin-bottom:7px}h2{font-size:21px;letter-spacing:-.4px;margin-bottom:6px}h3{font-size:16px;margin-bottom:7px}.muted{color:var(--muted);font-size:13px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:#9b6b43;margin-bottom:12px}.welcome{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px}.welcome p{margin:0}.date-tag{font-size:11px;color:#7e8a80;border:1px solid var(--line);background:white;padding:7px 13px;border-radius:20px}.hero{background:#f3e8d5;border-radius:23px;min-height:257px;padding:30px 33px;position:relative;overflow:hidden;display:flex;align-items:center;justify-content:space-between}.hero-copy{max-width:61%;z-index:1}.hero h2{font-size:32px;line-height:1.2;letter-spacing:-1px;margin:9px 0 12px}.hero p{font-size:13px;color:#7d7c66;max-width:380px;margin-bottom:20px}.pill{font-size:9px;letter-spacing:1.2px;font-weight:700;padding:5px 10px;background:#fff8;border:1px solid #fff8;border-radius:7px}.hero-art{width:285px;height:240px;position:absolute;right:16px;bottom:0}.button{border:0;border-radius:10px;padding:12px 19px;font-size:13px;font-weight:650;display:inline-flex;gap:15px;align-items:center;justify-content:center}.primary{background:var(--green);color:#fff}.primary:hover{background:#376852}.button:disabled{opacity:.5;cursor:default}.light{background:#edf2ea;color:var(--green)}.orange{background:var(--orange);color:white}.hero-meta{font-size:10px;color:#8a8870;margin-left:13px}.summary-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:15px;margin:20px 0 30px}.summary{background:white;border:1px solid var(--line);border-radius:14px;padding:16px;display:flex;align-items:center;gap:13px}.summary-icon{width:43px;height:43px;border-radius:12px;display:grid;place-items:center;font-size:22px;background:#eef2e5}.summary:nth-child(2) .summary-icon{background:#fff2d8}.summary:nth-child(3) .summary-icon{background:#edeaf5}.summary strong{font-size:19px}.summary small{display:block;font-size:10px;color:var(--muted)}.section-title{display:flex;align-items:center;justify-content:space-between;margin:24px 0 15px}.section-title p{font-size:12px;color:var(--muted);margin:0}.section-title a{font-size:11px;font-weight:600;color:#697d6a}.unit-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.unit{background:white;border-radius:16px;overflow:hidden;border:1px solid var(--line);transition:transform .2s,box-shadow .2s}.unit:hover{transform:translateY(-3px);box-shadow:0 8px 22px #243f360b}.unit-cover{height:116px;display:flex;align-items:center;justify-content:center;gap:16px;position:relative;background:var(--tint)}.unit-cover>span{font-size:49px;filter:drop-shadow(0 5px 0 #00000008);transform:rotate(-8deg)}.unit-cover>span:nth-child(2){transform:rotate(9deg);font-size:42px}.unit-number{position:absolute;top:12px;left:14px;font-size:9px;letter-spacing:1px;color:#6d7969;font-weight:700}.unit-body{padding:17px}.unit-body p{font-size:11px;color:var(--muted);margin-bottom:15px}.unit-top{display:flex;justify-content:space-between;align-items:center;font-size:9px;color:#8d978a;margin-bottom:6px}.unit-action{display:flex;align-items:center;justify-content:space-between;border-top:1px solid #f0f1ed;padding-top:12px}.unit-action small{font-size:10px;color:var(--muted)}.unit-action button{border:0;background:#edf3e9;border-radius:8px;color:var(--green);font-size:11px;padding:8px 12px;font-weight:700}.bottom-grid{display:grid;grid-template-columns:1.45fr 1fr;gap:18px;margin-top:25px}.daily-card,.tip{border-radius:15px;padding:22px;background:#edf1e9;display:flex;align-items:center;gap:18px}.daily-card>span,.tip>span{font-size:34px}.daily-card p,.tip p{font-size:11px;color:#7c897d;margin:0}.tip{background:#f3ece3}.daily-card .text-button{margin-left:auto;white-space:nowrap}.text-button{border:0;background:none;color:var(--green);font-size:12px;font-weight:650;padding:7px}.progress-track{height:7px;border-radius:9px;background:#e8ece4;overflow:hidden}.progress-track>div{height:100%;background:#7d9e76;border-radius:9px}.path-card{background:white;border:1px solid var(--line);border-radius:18px;padding:25px;margin:20px 0}.level-line{display:flex;gap:15px;align-items:center}.level-badge{width:55px;height:55px;background:#eaf1e5;border-radius:15px;display:grid;place-items:center;font-size:28px}.level-line p{margin:0}.level-line .pill{margin-left:auto;background:#f5f4e9}.path-card .unit-grid{margin-top:24px}.word-controls{display:flex;gap:12px;margin:25px 0;flex-wrap:wrap}input,select{background:#fff;border:1px solid #dbe1d7;border-radius:9px;padding:11px;color:var(--ink);min-width:0}.word-controls input{flex:1}.word-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:15px}.word-card{border:1px solid var(--line);background:white;padding:22px 12px;border-radius:16px;text-align:center}.word-card .emoji{font-size:47px}.word-card h3{margin:10px 0 2px}.word-card p{font-size:12px;color:var(--muted)}.word-card button{border:0;background:#edf2e9;border-radius:20px;padding:6px 15px;color:var(--green)}.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin:25px 0}.reward{padding:28px;text-align:center;border:1px solid var(--line);border-radius:18px;background:white}.reward>span{font-size:55px}.reward.locked{opacity:.55;filter:grayscale(1)}footer{text-align:center;font-size:10px;color:#9da499;padding:24px}footer span{color:var(--orange);margin:0 8px}footer small{font-size:9px;line-height:2.8}dialog{border:0;border-radius:24px;padding:28px;width:min(700px,calc(100% - 28px));max-height:90vh;color:var(--ink);box-shadow:0 25px 100px #172f3b30}dialog::backdrop{background:#18392d88;backdrop-filter:blur(5px)}.modal-head{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:20px}.modal-head small{font-size:10px;letter-spacing:1.3px;color:var(--muted)}.modal-head h2{margin:5px 0}.icon-button{border:0;background:#f0f2eb;border-radius:50%;width:34px;height:34px;color:var(--green)}.lesson-area{text-align:center;padding:18px 10px}.lesson-area h2{font-size:25px}.big-emoji{font-size:85px;line-height:1.5}.flash-word{font-size:31px;margin:7px 0}.flash-meaning{color:var(--muted)}.choices{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin:24px 0}.choice{border:2px solid #e7ece2;background:#fafbf7;border-radius:14px;padding:17px;font-size:19px;color:var(--ink)}.choice .emoji{display:block;font-size:38px}.choice.correct{background:#e3f3de;border-color:#7fa476}.choice.wrong{border-color:#e8a780;background:#fff1e8}.lesson-footer{display:flex;justify-content:space-between;align-items:center;margin-top:22px;border-top:1px solid var(--line);padding-top:20px;gap:10px}.lesson-feedback{min-height:28px;font-size:14px;color:#587950;margin:10px 0}.writing-input{font-size:24px;text-align:center;max-width:90%;margin:15px}.speaking-prompt{background:#eff4eb;border-radius:15px;padding:20px;font-size:24px;margin:24px 0}.lesson-step{font-size:11px;color:var(--muted)}#settings{width:min(570px,calc(100% - 28px))}#settings label{display:grid;gap:6px;margin:14px 0;font-size:13px;font-weight:600}#settings p{font-size:12px}#settings>a{font-size:12px;text-decoration:underline}.parent-actions{display:flex;align-items:center;justify-content:space-between;margin:22px 0 10px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--green);color:white;border-radius:12px;padding:12px 22px;box-shadow:0 6px 25px #0002;display:none;z-index:5}.empty{text-align:center;padding:40px;color:var(--muted)}.review-note{background:#fff6e5;border-radius:12px;padding:12px;font-size:12px;margin:15px 0}.word-count{font-size:12px;color:var(--muted)}@media(min-width:1500px){.hero-art{right:80px}}@media(max-width:1100px){.sidebar{width:215px;padding:30px 17px}.workspace{margin-left:215px}main{padding:26px}.hero-art{right:-20px;width:245px}.hero h2{font-size:28px}header{padding:0 26px}.unit-grid{gap:12px}.hero-meta{display:none}.unit-body{padding:13px}.word-grid{grid-template-columns:repeat(3,1fr)}}@media(max-width:800px){.sidebar{position:static;width:auto;padding:16px 20px;border:0}.brand{font-size:23px}.brand-icon{font-size:40px}.learner,.nav-label,.side-note,.local-note{display:none}nav{display:flex;justify-content:space-between;margin-top:16px;gap:5px}nav a{padding:10px;gap:6px;font-size:20px}nav a span{font-size:11px}.parent-link{position:absolute;top:23px;right:20px;margin:0}.workspace{margin-left:0}header{height:60px;padding:0 20px}.breadcrumb{display:none}.header-stats{width:100%;justify-content:flex-end;font-size:11px;gap:15px}main{padding:24px 20px}.hero-art{right:0;width:220px}.hero-copy{max-width:60%}.hero{padding:25px;min-height:265px}.hero h2{font-size:26px}.hero p{font-size:12px}.unit-grid{grid-template-columns:repeat(2,1fr)}.summary{padding:12px;gap:9px}.summary-icon{width:33px;height:36px;font-size:18px}.summary strong{font-size:16px}.bottom-grid{grid-template-columns:1fr}.welcome h1{font-size:25px}.date-tag{display:none}}@media(max-width:480px){nav a{display:grid;justify-items:center;gap:0}nav a span{font-size:9px}.hero-copy{max-width:75%}.hero-art{width:175px;right:-55px;bottom:-18px;opacity:.7}.hero h2{font-size:25px}.hero{padding:23px;min-height:265px}.hero p{max-width:220px}.hero .button{padding:11px 14px}.summary-grid{gap:8px}.summary{display:block;text-align:center}.summary-icon{margin:0 auto 6px}.summary small{font-size:9px}.unit-cover>span{font-size:38px}.unit-cover>span:nth-child(2){font-size:32px}.unit-cover{gap:8px;height:105px}.unit-body h3{font-size:14px}.unit-action{gap:4px}.unit-action button{font-size:10px;padding:7px}.unit-action small{font-size:9px}.word-grid{grid-template-columns:repeat(2,1fr)}.reward-grid{grid-template-columns:1fr}.section-title h2{font-size:19px}.section-title a{font-size:10px}.level-line{flex-wrap:wrap}.level-line .pill{margin-left:0}.path-card{padding:18px}.daily-card,.tip{padding:18px;gap:10px}.daily-card>span{font-size:26px}.daily-card h3{font-size:14px}dialog{padding:20px}.lesson-footer .button{font-size:12px;padding:11px}.welcome h1{font-size:23px}}@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}