:root{--bg:#f7f8f2;--paper:#fff;--ink:#263c31;--muted:#7d887f;--green:#305c45;--deep:#244c39;--lime:#d9eb9e;--line:#e5e9df;--soft:#eef3e8;--orange:#d48a52;--red:#b14e44;--radius:24px;font-family:'DM Sans','PingFang SC','Microsoft YaHei',sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;border:0;color:inherit}button:disabled{cursor:default;opacity:.6}a{color:inherit}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #a1b96b;outline-offset:4px}button svg,a svg{flex-shrink:0}svg{vertical-align:middle}button{touch-action:manipulation}h1,h2,h3,h4,p{margin:0}h1,h2,h3{font-weight:700}h1{font-size:32px;letter-spacing:-1px}h2{font-size:22px}h3{font-size:18px}.muted{color:var(--muted)}.small{font-size:13px}.eyebrow{font-size:11px;letter-spacing:2.5px;font-weight:700;color:var(--muted);text-transform:uppercase}.row{display:flex;align-items:center;gap:12px}.between{justify-content:space-between}.grow{flex:1}.icon{width:21px;height:21px}.icon-btn{width:43px;height:43px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;background:var(--soft)}.icon-btn:hover{background:#e0ead8}.icon-btn.saved{color:#ad7d25;background:#fff5d7}.btn{min-height:50px;padding:14px 23px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;background:var(--green);color:white;text-decoration:none;transition:transform .18s,background .18s}.btn:hover{background:#234a36;transform:translateY(-1px)}.btn.light{background:var(--lime);color:var(--deep)}.btn.soft{background:var(--soft);color:var(--green)}.btn.outline{background:white;border:1px solid var(--line);color:var(--ink)}.btn.full{width:100%}.text-btn{background:none;color:var(--green);font-size:13px;padding:10px 0;display:inline-flex;align-items:center;gap:5px}.chip{display:inline-flex;align-items:center;gap:5px;font-size:12px;border-radius:8px;padding:6px 9px;background:var(--soft);color:var(--green)}.tag{font-size:11px;letter-spacing:.5px;color:var(--green);padding:5px 8px;background:var(--soft);border-radius:6px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius)}
.sidebar{position:fixed;inset:0 auto 0 0;width:224px;padding:40px 24px 28px;border-right:1px solid var(--line);background:#fbfcf7;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:11px;text-decoration:none}.brand img{width:42px;height:42px}.brand strong{display:block;font-size:23px;letter-spacing:4px}.brand span{font-size:9px;letter-spacing:3px;color:var(--muted)}.side-nav{margin-top:52px;display:grid;gap:10px}.nav-item{display:flex;align-items:center;gap:13px;text-decoration:none;padding:15px 20px;border-radius:13px;font-size:14px;color:#7b857c}.nav-item.active{background:#e7eddc;color:var(--deep);font-weight:700}.side-bottom{margin-top:auto;padding:19px 14px 0;border-top:1px solid var(--line)}.leaf-note{padding:20px 15px;background:#f0f3e5;border-radius:15px;margin-bottom:22px;font-size:12px;line-height:1.9}.leaf-note .eyebrow{font-size:9px;letter-spacing:1px;margin:9px 0}.shell{margin-left:224px;min-height:100vh}.topbar{height:95px;max-width:1260px;margin:auto;display:flex;align-items:center;justify-content:space-between;padding:0 48px}.top-label{font-size:12px;color:var(--muted);letter-spacing:1px}.topbar .brand{display:none}.top-actions{display:flex;align-items:center;gap:18px}.streak{display:flex;align-items:center;gap:6px;font-size:13px}.streak svg{color:#c48c4b}.avatar{width:34px;height:34px;border-radius:50%;background:#e5ead8;display:grid;place-items:center;font-size:12px;color:var(--green);font-weight:bold}.content{max-width:1260px;margin:auto;padding:22px 48px 55px}.page-title{display:flex;align-items:end;justify-content:space-between;margin-bottom:29px;gap:15px}.page-title p{font-size:14px;color:var(--muted);margin-top:11px;line-height:1.7}.date-pill{font-size:12px;color:var(--muted);padding-bottom:3px;white-space:nowrap}.dashboard-grid{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(270px,1fr);gap:25px}.main-column,.right-column{display:flex;flex-direction:column;gap:24px}.hero{background:var(--deep);border-radius:26px;color:white;padding:32px;position:relative;overflow:hidden;min-height:289px;display:flex;flex-direction:column;justify-content:space-between}.hero .eyebrow{color:#c4d6b7;letter-spacing:1.6px;font-size:10px}.hero h2{font-size:31px;line-height:1.5;margin:15px 0 10px;letter-spacing:1px;position:relative;z-index:1}.hero p{font-size:12px;color:#bfcebe;line-height:1.8}.hero .btn{align-self:flex-start;z-index:1;margin-top:22px;font-size:13px;min-height:45px}.hero-art{position:absolute;right:-4px;bottom:12px;width:49%;max-width:280px;pointer-events:none}.hero-copy{position:relative;z-index:1;max-width:70%}.daily-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}.stat-card{padding:21px 20px;min-width:0}.stat-icon{color:#607c4d;margin-bottom:14px}.stat-value{font-family:Manrope,sans-serif;font-size:30px;letter-spacing:-1px;font-weight:700}.stat-value small{font-size:12px;margin-left:6px;color:var(--muted);font-weight:400;letter-spacing:0}.stat-caption{font-size:12px;color:var(--muted);margin-top:5px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.section-heading h2{font-size:17px}.quick-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.quick-card{padding:22px;text-align:left;transition:transform .2s;background:#eef1e5;border:1px solid #e1e8d5;border-radius:19px}.quick-card.alt{background:#f8f0de;border-color:#eee5d0}.quick-card:hover{transform:translateY(-3px)}.quick-card .row{justify-content:space-between;margin-bottom:21px}.quick-card h3{font-size:15px;margin-bottom:8px}.quick-card p{font-size:11px;color:var(--muted);line-height:1.6}.quick-card .icon{width:23px;height:23px}.plan-card{padding:25px}.book-symbol{width:48px;height:62px;background:#e7eccc;border-radius:4px 9px 9px 4px;border-left:5px solid #bbc88e;position:relative;display:grid;place-items:center;font-family:Manrope,sans-serif;font-size:25px;font-weight:700;color:#53643b}.book-symbol.six{background:#e8e3ee;border-color:#bcb0d1;color:#726183}.book-symbol:after{content:'';position:absolute;height:2px;background:#c6d19f;left:8px;right:8px;bottom:8px}.book-summary{margin:21px 0}.book-summary h3{font-size:16px;margin-bottom:6px}.book-summary p{font-size:11px;color:var(--muted)}.progress-track{height:6px;background:#eef1e7;border-radius:10px;overflow:hidden}.progress-track span{display:block;height:100%;background:#8ea366;border-radius:10px}.progress-label{display:flex;justify-content:space-between;font-size:11px;color:var(--muted);margin:12px 0 16px}.plan-divider{height:1px;background:var(--line);margin:21px 0 16px}.goal-line{font-size:12px}.word-day{padding:23px;background:#f3f0e5;overflow:hidden;position:relative;border-color:#eae6d8}.word-day .eyebrow{font-size:9px;letter-spacing:1.7px}.word-day h3{font:700 28px Manrope,sans-serif;margin:18px 0 8px;letter-spacing:-.7px}.word-day .phonetic{font-size:12px;color:var(--muted);margin-bottom:17px}.word-day .definition{font-size:13px;line-height:1.7}.word-day blockquote{margin:17px 0 0;font-size:12px;line-height:1.8;color:#71806d;border-left:2px solid #c5c99f;padding-left:11px}.bottom-note{text-align:center;color:#97a18f;font-size:11px;margin:32px 0 0}.bottom-nav{display:none}.section-subtitle{font-size:13px;color:var(--muted);line-height:1.8;margin-top:8px}.notice{border:1px solid #eadbb2;background:#fff7df;color:#8b6d30;padding:13px 16px;border-radius:12px;font-size:12px;line-height:1.7;margin-bottom:20px}
.book-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:32px}.book-choice{padding:27px;background:white;text-align:left;display:flex;gap:20px;border:1.5px solid var(--line);border-radius:22px;position:relative;align-items:center}.book-choice.selected{border-color:#78945d;background:#f1f5e8}.book-choice .book-symbol{width:66px;height:87px;flex-shrink:0;font-size:35px}.book-choice h3{font-size:18px;margin-bottom:9px}.book-choice p{font-size:12px;color:var(--muted);line-height:1.8}.selected-check{position:absolute;right:15px;top:15px;color:var(--green)}.search-box{display:flex;align-items:center;gap:10px;padding:0 16px;background:white;border:1px solid var(--line);border-radius:13px;min-height:49px;flex:1}.search-box input{border:0;outline:0;background:transparent;min-width:0;width:100%;font-size:14px;color:var(--ink)}.list-toolbar{display:flex;gap:12px;align-items:center;margin:19px 0}.filter-select{min-height:49px;max-width:140px;border:1px solid var(--line);border-radius:13px;padding:0 12px;background:white;color:var(--ink)}.word-list{background:white;border:1px solid var(--line);border-radius:20px;overflow:hidden}.word-row{display:flex;align-items:center;gap:12px;padding:18px 22px;border-bottom:1px solid #edf0e8}.word-row:last-child{border-bottom:0}.word-info{background:transparent;flex:1;text-align:left;min-width:0;padding:0}.word-info strong{font:600 17px Manrope,sans-serif;display:block;margin-bottom:5px}.word-info p{font-size:12px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.7}.word-row .icon-btn{width:36px;height:36px;background:transparent}.word-row .status-dot{width:6px;height:6px;border-radius:50%;background:#9caf7f}.load-more{padding:18px;text-align:center}.empty{text-align:center;padding:50px 22px}.empty .icon{width:40px;height:40px;color:#8a9d77;margin-bottom:18px}.empty h3{margin-bottom:12px}.empty p{font-size:13px;color:var(--muted);line-height:1.9;margin-bottom:22px}.review-options{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:25px}.review-card{text-align:left;padding:26px;background:white}.review-card>.icon{width:30px;height:30px;color:#7e965c;margin:2px 0 28px}.review-card h3{margin-bottom:10px}.review-card p{font-size:13px;color:var(--muted);line-height:1.8;margin-bottom:25px}.review-banner{padding:27px;background:#e9efdc;border:0;display:flex;align-items:center;gap:20px}.review-banner strong{font-size:34px;font-family:Manrope,sans-serif}.history-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:25px}.chart-card{padding:28px;margin-bottom:23px}.chart{height:190px;display:flex;gap:16px;align-items:end;margin-top:28px;border-bottom:1px solid var(--line);padding-bottom:28px}.bar-column{flex:1;position:relative;display:flex;justify-content:end;align-items:center;flex-direction:column;height:100%;gap:8px}.bar-column .bar{width:100%;max-width:46px;background:#d8e4c3;border-radius:7px 7px 0 0;min-height:4px}.bar-column.today .bar{background:#678851}.bar-column .value{font-size:11px;color:var(--muted)}.bar-column .day{position:absolute;bottom:-22px;font-size:11px;color:var(--muted);white-space:nowrap}.storage-card{padding:24px;display:flex;gap:25px;justify-content:space-between;align-items:center}.storage-card p{font-size:12px;line-height:1.8;color:var(--muted);margin-top:9px;max-width:490px}
.study-shell{max-width:770px;margin:0 auto;padding:35px 24px 60px;min-height:100dvh}.study-header{gap:20px;margin-bottom:24px}.study-header .progress-track{flex:1;height:7px}.study-count{font-size:12px;white-space:nowrap;color:var(--muted)}.study-tools{margin:30px 0 22px}.study-card{padding:45px 45px 35px;text-align:center;min-height:410px;display:flex;flex-direction:column;align-items:center}.study-word{font:700 clamp(30px,6vw,46px) Manrope,sans-serif;letter-spacing:-1.5px;overflow-wrap:anywhere;max-width:100%;margin:25px 0 12px}.phonetic{font-size:15px;color:var(--muted)}.pronounce-row{display:flex;align-items:center;gap:12px;margin:16px 0 25px}.meaning{font-size:18px;line-height:1.9;white-space:pre-line;text-align:left;width:100%;padding-top:25px;border-top:1px dashed var(--line)}.meaning.blur{filter:blur(6px);user-select:none}.reveal-area{margin:35px 0 20px;text-align:center}.reveal-area p{font-size:13px;color:var(--muted);margin-bottom:17px}.example{text-align:left;background:var(--soft);border-radius:12px;padding:17px 20px;font-size:14px;line-height:1.8;margin-top:20px;width:100%}.example small{display:block;color:var(--muted);margin-top:7px;font-size:12px}.study-actions{display:grid;grid-template-columns:1fr 1.35fr;gap:14px;margin-top:22px}.hint{text-align:center;color:var(--muted);font-size:11px;margin-top:20px;line-height:1.8}.choices{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:22px}.choice{border:1px solid var(--line);background:#fff;border-radius:16px;padding:20px;text-align:left;min-height:84px;font-size:14px;line-height:1.8;display:flex;align-items:center;gap:14px}.choice .letter{font:600 13px Manrope,sans-serif;border:1px solid var(--line);border-radius:7px;min-width:27px;height:27px;display:grid;place-items:center;color:var(--muted)}.choice.correct{background:#eaf2df;border-color:#8aa96b;color:#375d2e;opacity:1}.choice.wrong{background:#fff0eb;border-color:#d39285;color:#a54c3d;opacity:1}.choice:disabled:not(.correct):not(.wrong){opacity:.65}.feedback{padding:16px 18px;background:var(--soft);border-radius:13px;font-size:14px;margin-top:20px;line-height:1.7}.feedback.error{background:#fff0e8;color:#a15639}.spell-form{display:flex;gap:10px;margin-top:24px}.spell-input{width:100%;padding:16px;border:1px solid var(--line);border-radius:13px;background:white;font-size:20px;text-align:center;min-width:0;color:var(--ink)}.finish{max-width:520px;margin:70px auto;text-align:center;padding:40px 30px}.finish-mark{width:84px;height:84px;margin:0 auto 23px;background:var(--lime);border-radius:50%;display:grid;place-items:center}.finish-mark .icon{width:36px;height:36px}.finish h1{font-size:28px;margin-bottom:13px}.finish p{color:var(--muted);font-size:14px;line-height:1.9}.finish-stats{display:flex;justify-content:center;gap:45px;margin:32px 0}.finish-stats strong{display:block;font:700 30px Manrope,sans-serif}.finish-stats span{display:block;font-size:12px;color:var(--muted);margin-top:8px}
dialog{border:1px solid var(--line);border-radius:23px;padding:28px;max-width:480px;width:calc(100% - 36px);max-height:85dvh;color:var(--ink);background:var(--bg);box-shadow:0 20px 80px #213b3320}dialog::backdrop{background:#203c3455;backdrop-filter:blur(3px)}dialog .modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}dialog .modal-header h2{font-size:19px}.setting-label{font-size:14px;margin:23px 0 12px;display:block}.goal-choices{display:flex;gap:8px}.goal-choices button{flex:1;padding:13px 8px;border-radius:10px;background:white;border:1px solid var(--line);font-size:13px}.goal-choices button.selected{border-color:#859d64;background:#e7eedb;font-weight:700}.modal-note{font-size:12px;color:var(--muted);line-height:1.8;margin:17px 0}.modal-word{font:700 32px Manrope,sans-serif;overflow-wrap:anywhere;margin:15px 0}.source-note{font-size:11px;line-height:1.9;color:var(--muted);margin-top:30px;padding-top:16px;border-top:1px solid var(--line)}.source-note a{text-underline-offset:3px}#toast{position:fixed;left:50%;bottom:35px;transform:translate(-50%,20px);max-width:90vw;width:max-content;padding:13px 20px;background:#263d31;color:white;border-radius:12px;font-size:13px;z-index:100;opacity:0;pointer-events:none;transition:.2s;box-shadow:0 5px 20px #0002}#toast.show{opacity:1;transform:translate(-50%,0)}.loading{text-align:center;padding:20vh 24px}.loading h1{font-size:24px;margin:15px}.loading p{font-size:14px;color:var(--muted)}.footer-quote{font-size:12px;color:var(--muted);line-height:1.8;margin-top:23px}
@media(min-width:1500px){.content{padding-top:35px}.hero{min-height:310px}.hero h2{font-size:34px}.hero-art{width:51%}.dashboard-grid{gap:30px}}
@media(max-width:1150px){.sidebar{width:190px;padding:32px 18px}.shell{margin-left:190px}.topbar{padding:0 30px}.content{padding:15px 30px 40px}.dashboard-grid{grid-template-columns:minmax(0,1.6fr) minmax(240px,1fr);gap:19px}.hero{padding:27px}.hero h2{font-size:27px}.hero-art{width:47%}.stat-card{padding:18px 15px}.plan-card,.word-day{padding:22px}.review-options{gap:13px}.review-card{padding:21px}.history-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:900px){.sidebar{width:170px;padding:28px 12px}.nav-item{padding:14px}.shell{margin-left:170px}.topbar{padding:0 24px}.content{padding:12px 24px 40px}.dashboard-grid{grid-template-columns:1fr}.right-column{display:grid;grid-template-columns:1fr 1fr;gap:18px}.hero-art{right:15px;max-width:270px;width:46%}.hero{min-height:286px}.hero h2{font-size:30px}.book-grid{gap:14px}.book-choice{padding:22px 17px;gap:15px}.book-choice .book-symbol{width:48px;height:67px;font-size:26px}.book-choice h3{font-size:15px}.review-options{grid-template-columns:1fr}.review-card{display:grid;grid-template-columns:40px 1fr;column-gap:17px}.review-card>.icon{grid-row:1 / 4;margin:5px 0}.review-card p{margin-bottom:17px}.review-card .btn{justify-self:start}.storage-card{align-items:start;flex-direction:column;gap:17px}}
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