:root{--bg:#f6f5f0;--paper:#fffefa;--ink:#202c36;--muted:#7c8588;--line:#e7e6df;--navy:#263f70;--navy2:#1c315a;--sage:#dfe9df;--sage-ink:#42634a;--peach:#f3e2d3;--peach-ink:#935d39;--lav:#e8e8f5;--lav-ink:#55598c;--shadow:0 12px 36px rgba(35,47,58,.045);--radius:18px}
:root[data-theme="dawn"]{--bg:#fdf6ee;--paper:#fff9f2;--ink:#3a2e24;--muted:#9a8a7a;--line:#f0e2d2;--navy:#8b5e3c;--navy2:#6f4a30;--sage:#f0e0d0;--sage-ink:#7a5a3a;--peach:#f5dcc8;--peach-ink:#935d39;--lav:#f0e0d0;--lav-ink:#8b6a4a}
:root[data-theme="day"]{--bg:#f0f4f8;--paper:#ffffff;--ink:#1e2d3d;--muted:#6b7a8a;--line:#dde5ec;--navy:#2b5a8c;--navy2:#1e4470;--sage:#dceadf;--sage-ink:#3a6b4a;--peach:#fce8d8;--peach-ink:#9a6a40;--lav:#e0e8f5;--lav-ink:#4a5a8c}
:root[data-theme="dusk"]{--bg:#2e2a3a;--paper:#3a3548;--ink:#e8e4f0;--muted:#9a90a8;--line:#4a4458;--navy:#7a8ac8;--navy2:#6a7ab8;--sage:#3a4a48;--sage-ink:#8ab89a;--peach:#4a3a38;--peach-ink:#d8a878;--lav:#3e3a58;--lav-ink:#9a9ad8;--shadow:0 12px 36px rgba(0,0,0,.2)}
:root[data-theme="night"]{--bg:#1a1a2e;--paper:#252540;--ink:#d8d8e8;--muted:#7a7a9a;--line:#35355a;--navy:#6a7ac8;--navy2:#5a6ab8;--sage:#2a3a38;--sage-ink:#6aaa8a;--peach:#3a2a38;--peach-ink:#c89868;--lav:#2e2e4a;--lav-ink:#8a8ac8;--shadow:0 12px 36px rgba(0,0,0,.3)}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px/1.5 "Microsoft YaHei","PingFang SC",Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;transition:background .8s ease,color .8s ease}button,input,textarea,select{font:inherit}button{cursor:pointer}button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #9aafd8;outline-offset:2px}
@keyframes popIn{0%{transform:scale(.92);opacity:0}100%{transform:scale(1);opacity:1}}
@keyframes slideUp{0%{transform:translateY(12px);opacity:0}100%{transform:translateY(0);opacity:1}}
.pop{animation:popIn .25s ease}
.view.active{animation:slideUp .3s ease}
.panel,.stat,.vocab-card{transition:background .8s ease,border-color .8s ease,box-shadow .2s}
.app{min-height:100vh;display:grid;grid-template-columns:248px minmax(0,1fr)}aside{border-right:1px solid var(--line);padding:28px 18px;background:rgba(255,254,250,.58);display:flex;flex-direction:column;gap:28px}.brand{display:flex;align-items:center;gap:11px;padding:0 10px}.brand-mark{height:38px;width:38px;border-radius:12px;background:var(--navy);color:white;display:grid;place-items:center;font-family:inherit;font-size:23px}.brand-name{font-size:19px;font-weight:750;letter-spacing:-.7px}.brand-sub{font-size:10px;color:var(--muted);letter-spacing:1.3px;text-transform:uppercase}.nav-label{padding:0 12px;color:#9a9f9c;font-size:10px;letter-spacing:1.5px;text-transform:uppercase;margin-bottom:8px}.nav{display:grid;gap:5px}.nav button{border:0;background:transparent;color:#6f797e;text-align:left;padding:12px 13px;border-radius:12px;display:flex;gap:12px;align-items:center;font-weight:560}.nav button .ico{width:21px;text-align:center;font-size:17px}.nav button:hover{background:#eeeee8;color:var(--ink)}.nav button.active{background:#e6eaf2;color:var(--navy);font-weight:700}.side-bottom{margin-top:auto}.streak{background:var(--paper);border:1px solid var(--line);padding:16px;border-radius:15px}.streak-top{display:flex;align-items:center;justify-content:space-between}.streak strong{font-size:14px}.streak p{font-size:12px;color:var(--muted);margin:8px 0 0}.mini-bars{display:flex;gap:5px;margin-top:14px}.mini-bars span{height:5px;border-radius:5px;flex:1;background:#e6e7e1}.mini-bars span.on{background:#8aa28b}
main{min-width:0;padding:34px clamp(20px,4vw,58px) 60px;max-width:1500px;width:100%;margin:0 auto}.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:34px}.eyebrow{color:var(--muted);font-size:12px;letter-spacing:.5px}.topbar h1{font-size:clamp(26px,3vw,35px);letter-spacing:-1.3px;line-height:1.15;margin:6px 0 0;font-weight:750}.date-chip{border:1px solid var(--line);border-radius:99px;padding:9px 14px;background:var(--paper);color:#667176;font-size:12px;white-space:nowrap}.view{display:none}.view.active{display:block}.welcome{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:23px}.welcome h2{font-size:23px;letter-spacing:-.7px;margin:0 0 5px}.welcome p{margin:0;color:var(--muted);font-size:13px}.primary,.secondary,.quiet{border:0;border-radius:11px;padding:11px 16px;font-weight:650;font-size:13px;transition:transform .15s,background .15s}.primary{background:var(--navy);color:#fff}.primary:hover{background:var(--navy2);transform:translateY(-1px)}.primary:disabled{background:#b0b8c4;cursor:not-allowed;transform:none}.secondary{background:#e8ebf2;color:var(--navy)}.secondary:hover{background:#dce2ef}.quiet{background:transparent;color:var(--muted);padding:8px 10px}.quiet:hover{background:#eeeee8;color:var(--ink)}.stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:26px}.stat{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:18px 19px;box-shadow:var(--shadow)}.stat-top{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}.stat-icon{width:30px;height:30px;border-radius:10px;display:grid;place-items:center;background:#f0f0ea;font-size:15px}.stat-value{font-size:29px;letter-spacing:-1px;font-weight:760;margin-top:10px}.stat-foot{font-size:11px;color:var(--muted);margin-top:3px}.stat-foot b{color:var(--sage-ink);font-weight:650}
.content-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(270px,.85fr);gap:18px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);min-width:0}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}.panel-head h3{font-size:15px;margin:0;letter-spacing:-.25px}.panel-head p{margin:4px 0 0;color:var(--muted);font-size:12px}.text-link{border:0;background:none;color:var(--navy);font-size:12px;font-weight:700;padding:5px}.text-link:hover{text-decoration:underline}.word-list{display:grid}.word-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 0;border-top:1px solid #efeee8}.word-row:first-child{border-top:0}.word-main{min-width:0}.word-term{font-size:15px;font-weight:720;letter-spacing:-.2px}.word-pos{font-size:10px;color:var(--muted);font-weight:550;margin-left:6px}.word-meaning{font-size:12px;color:#788185;margin-top:3px;overflow-wrap:anywhere}.tag{font-size:10px;padding:5px 8px;border-radius:99px;white-space:nowrap;background:var(--sage);color:var(--sage-ink);font-weight:700}.tag.new{background:var(--lav);color:var(--lav-ink)}.tag.review{background:var(--peach);color:var(--peach-ink)}.empty{padding:28px 14px;text-align:center;color:var(--muted);font-size:13px}.empty .empty-icon{font-size:27px;margin-bottom:8px}.focus-card{background:#edf0f6;border-radius:15px;padding:19px;margin-bottom:13px}.focus-label{font-size:10px;text-transform:uppercase;letter-spacing:1.4px;color:#65779c}.focus-word{font-family:inherit;font-size:29px;font-weight:700;line-height:1.2;color:var(--navy);margin:9px 0 2px}.focus-hint{font-size:12px;color:#727e8f}.focus-actions{display:flex;gap:8px;margin-top:16px}.focus-actions button{flex:1}.tip{display:flex;gap:12px;padding-top:14px}.tip-icon{width:33px;height:33px;flex:0 0 auto;border-radius:11px;background:var(--peach);display:grid;place-items:center}.tip h4{font-size:12px;margin:0 0 4px}.tip p{font-size:11px;color:var(--muted);margin:0}
.toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:17px}.search-wrap{flex:1;min-width:190px;position:relative}.search-wrap span{position:absolute;left:13px;top:9px;color:#8b9292}.search-wrap input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--line);border-radius:11px;background:var(--paper);color:var(--ink)}.toolbar select{padding:10px 12px;border:1px solid var(--line);border-radius:11px;background:var(--paper);color:#626e73}.library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.vocab-card{border:1px solid var(--line);border-radius:15px;padding:17px;background:var(--paper);min-width:0;transition:border-color .15s,transform .15s}.vocab-card:hover{border-color:#c9d0dd;transform:translateY(-1px)}.vocab-card-top{display:flex;justify-content:space-between;align-items:center;gap:10px}.vocab-card h3{font-size:19px;letter-spacing:-.5px;margin:11px 0 2px;overflow-wrap:anywhere}.vocab-card .pos{font-size:11px;color:var(--muted)}.vocab-card .meaning{font-size:13px;margin:9px 0 0;overflow-wrap:anywhere}.vocab-card .example{font-size:12px;color:#8a9292;border-left:2px solid #d8ded8;padding-left:9px;margin-top:12px}.card-actions{display:flex;gap:5px;margin-top:15px;border-top:1px solid #efeee8;padding-top:10px}.card-actions button{font-size:11px}.icon-btn{border:0;background:transparent;color:#7f888b;padding:5px 7px;border-radius:8px}.icon-btn:hover{background:#f0f0ea;color:var(--ink)}.speak-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;border:1px solid #dfe2e8;background:#f4f5f8;color:var(--navy);border-radius:9px;padding:7px 9px;font-size:11px;font-weight:700;white-space:nowrap}.speak-btn:hover{background:#e7ebf3}.speak-btn .speaker{font-size:14px}.flash-speak{position:absolute;top:18px;right:18px;border:1px solid rgba(255,255,255,.24);background:rgba(255,255,255,.09);color:white;border-radius:10px;padding:8px 10px;font-size:12px}.flash-speak:hover{background:rgba(255,255,255,.18)}
.flash-layout{max-width:740px;margin:0 auto}.flash-meta{display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px;margin:0 3px 12px}.progress-track{height:5px;background:#e7e7e0;border-radius:9px;overflow:hidden;margin-bottom:19px}.progress-track div{height:100%;background:#8ca28c;width:0;transition:width .25s}.flashcard{min-height:320px;border-radius:22px;background:var(--navy);color:#fff;padding:32px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;position:relative;cursor:pointer;box-shadow:0 18px 40px rgba(38,63,112,.13);user-select:none}.flashcard:focus-visible{outline:3px solid #9aafd8;outline-offset:3px}.flash-kicker{font-size:10px;letter-spacing:2px;text-transform:uppercase;color:#b7c5e0}.flash-term{font-family:inherit;font-size:clamp(35px,6vw,53px);font-weight:500;line-height:1.15;letter-spacing:-1px;margin:23px 0 8px;overflow-wrap:anywhere}.flash-pos{color:#c4cde0;font-size:12px}.flash-divider{width:42px;height:1px;background:#7183a9;margin:22px auto}.flash-answer{font-size:19px;line-height:1.45;max-width:500px}.flash-example{font-size:13px;color:#c4cde0;margin-top:12px;max-width:500px}.tap-hint{position:absolute;bottom:20px;color:#b7c5e0;font-size:11px}.flash-controls{display:flex;justify-content:center;gap:10px;flex-wrap:wrap;margin-top:18px}.flash-controls button{min-width:115px}.flash-controls .know{background:#e2ebe0;color:#3e6547}.flash-controls .again{background:#f2e2d6;color:#8e5736}.flash-empty{background:var(--paper);border:1px dashed #d8d9d1;color:var(--muted);padding:65px 20px;border-radius:20px;text-align:center}
.form-panel{max-width:780px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:15px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field label{font-size:12px;font-weight:700;color:#515e63}.field input,.field textarea,.field select{width:100%;border:1px solid #dedfd8;background:#fffefa;border-radius:10px;padding:11px 12px;color:var(--ink)}.field textarea{resize:vertical;min-height:86px}.field input::placeholder,.field textarea::placeholder{color:#a6acab}.form-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:18px}.form-note{font-size:11px;color:var(--muted);line-height:1.7}.toast{position:fixed;right:22px;bottom:22px;background:#263f70;color:#fff;padding:13px 18px;border-radius:12px;box-shadow:var(--shadow);font-size:13px;opacity:0;transform:translateY(8px);pointer-events:none;transition:all .2s;z-index:10}.toast.show{opacity:1;transform:translateY(0)}.mobile-nav{display:none}
.import-hint{background:#f4f5f8;border-radius:12px;padding:14px 16px;font-size:12px;color:#5a6570;line-height:1.8;margin-bottom:16px}.import-hint code{background:#e8ebf2;padding:2px 6px;border-radius:5px;font-size:11px}
.proof-box{border:1px solid var(--line);border-radius:12px;padding:14px 16px;margin-top:10px;font-size:12px;line-height:1.7;display:none}.proof-box.show{display:block}.proof-box.ok{background:#eef5ee;border-color:#c8dcc8}.proof-box.err{background:#fdf0ea;border-color:#ecc9b5}.proof-box.loading{background:#f4f5f8;color:var(--muted)}.proof-title{font-weight:700;margin-bottom:6px;display:flex;align-items:center;gap:6px}.proof-box.ok .proof-title{color:var(--sage-ink)}.proof-box.err .proof-title{color:var(--peach-ink)}.proof-phonetic{font-size:13px;color:var(--navy);font-weight:600;margin:4px 0}.proof-def{color:#4a5560;margin-top:4px}.proof-def b{color:var(--ink)}.proof-sugg{margin-top:8px;padding-top:8px;border-top:1px dashed #d8d9d1;color:var(--muted)}.proof-sugg button{background:none;border:1px solid #c9d0dd;color:var(--navy);border-radius:6px;padding:2px 8px;margin:2px 3px 0 0;font-size:11px;cursor:pointer}.proof-sugg button:hover{background:#e8ebf2}.proof-mini{font-size:11px;color:var(--muted);margin-top:6px;padding-top:6px;border-top:1px solid #efeee8}.proof-mini b{color:var(--sage-ink)}
@media(max-width:1050px){.app{grid-template-columns:210px minmax(0,1fr)}aside{padding:24px 12px}main{padding:28px 24px 50px}.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.content-grid{grid-template-columns:1fr}.focus-side{display:grid;grid-template-columns:1fr 1fr;gap:12px}.focus-card{margin:0}.tip{padding:14px;background:var(--paper);border:1px solid var(--line);border-radius:15px;align-items:flex-start}}
@media(max-width:680px){.app{display:block}aside{display:none}main{padding:24px 16px 92px}.topbar{margin-bottom:25px}.topbar h1{font-size:27px}.date-chip{font-size:10px;padding:8px 10px}.welcome{align-items:flex-start;flex-direction:column}.welcome .primary{width:100%}.stats{gap:9px}.stat{padding:14px}.stat-value{font-size:25px}.stat-top{font-size:11px}.stat-foot{font-size:10px}.panel{padding:17px}.library-grid{grid-template-columns:1fr}.focus-side{display:block}.focus-card{margin-bottom:12px}.tip{background:transparent;border:0;padding:8px 2px}.form-grid{grid-template-columns:1fr}.field.full{grid-column:auto}.form-footer{align-items:flex-start;flex-direction:column}.form-footer .primary{width:100%}.flashcard{min-height:300px;padding:24px 18px}.flash-controls button{flex:1;min-width:95px}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:5;background:rgba(255,254,250,.96);border-top:1px solid var(--line);padding:8px 6px calc(8px + env(safe-area-inset-bottom));justify-content:space-around;backdrop-filter:blur(12px)}.mobile-nav button{display:grid;justify-items:center;gap:3px;border:0;background:transparent;color:#7b8588;font-size:10px;padding:5px 9px;border-radius:9px}.mobile-nav button.active{color:var(--navy);font-weight:750}.mobile-nav .ico{font-size:18px}.toolbar select{flex:1}.toolbar .primary{white-space:nowrap}.word-row{gap:8px}.date-chip{display:none}}