/* English Elevator Learn: extends ../../css/style.css. No external resources. */
:root{--beg:#217373;--ele:#2f6690;--int:#a8570c;--adv:#5b4b8a;--ok:#1d7a46;--okbg:#e6f5ec;--bad:#b3261e;--badbg:#fdeceb;--focus:#0b5fff}
body.learn{background:var(--sand);font-size:17px}
.learn :focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:6px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:99}.skip:focus{left:8px}
.learn .header-inner .nav a.on{background:var(--navy);color:#fff}
.preview-bar{background:#fff3e4;border-bottom:1px solid #f0d3ac;color:#6b3f08;font-size:.85rem;text-align:center;padding:6px 12px}
#app{max-width:1060px;margin:0 auto;padding:22px 18px 70px;min-height:70vh}
#app h1{font-size:clamp(1.7rem,4.2vw,2.5rem)}
#app h2{font-size:clamp(1.3rem,3vw,1.7rem);margin-top:1.4em}
.zh{display:block;color:var(--muted);font-size:.88em;font-weight:400;font-family:var(--sans);line-height:1.5}
.lead2{color:var(--muted);max-width:720px}
.crumbs{font-size:.9rem;margin-bottom:10px}.crumbs a{color:var(--muted)}
.grid{display:grid;gap:14px}
.g2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.g4{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.g8{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.box{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:0 4px 14px rgba(22,48,79,.06)}
.box.flat{box-shadow:none}
.box h3{margin-bottom:.3em}
a.box{display:block;text-decoration:none;color:inherit;transition:transform .15s,box-shadow .15s}
a.box:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.tag{display:inline-block;font-size:.74rem;font-weight:700;letter-spacing:.03em;padding:3px 10px;border-radius:999px;background:var(--tint);color:var(--navy);margin:0 6px 6px 0;border:1px solid var(--line)}
.tag.beginner{background:var(--beg);color:#fff;border-color:var(--beg)}
.tag.elementary{background:var(--ele);color:#fff;border-color:var(--ele)}
.tag.intermediate{background:var(--int);color:#fff;border-color:var(--int)}
.tag.advanced{background:var(--adv);color:#fff;border-color:var(--adv)}
.tag.sample{background:#fff3e4;color:#6b3f08;border-color:#f0d3ac}
.pathcard{border-top:6px solid var(--navy)}
.pathcard.beginner{border-top-color:var(--beg)}.pathcard.elementary{border-top-color:var(--ele)}.pathcard.intermediate{border-top-color:var(--int)}.pathcard.advanced{border-top-color:var(--adv)}
.pathcard p{margin:.3em 0;font-size:.95rem;color:var(--muted)}
.subs{margin:.4em 0}
.sec{display:flex;flex-direction:column;gap:6px;align-items:flex-start}
.sec svg{width:40px;height:40px}
.sec b{font-family:var(--serif);font-size:1.05rem;color:var(--navy)}
.sec span{font-size:.85rem;color:var(--muted);line-height:1.4}
.stat{font-size:2rem;font-weight:800;color:var(--navy);line-height:1}
.btn{cursor:pointer;border:0;font-family:inherit}
.btn.sm{padding:8px 16px;font-size:.92rem}
.btn[disabled]{opacity:.45;cursor:not-allowed;transform:none}
.btn-ghost{background:transparent;border:2px solid var(--navy)}
.btns{display:flex;flex-wrap:wrap;gap:10px;margin-top:12px;align-items:center}
.field{display:block;width:100%;font:inherit;padding:10px 12px;border:2px solid #c9d3de;border-radius:12px;background:#fff;color:var(--ink)}
textarea.field{min-height:120px;resize:vertical}
.field:focus{border-color:var(--navy)}
label.lbl{display:block;font-weight:700;font-size:.9rem;margin:10px 0 4px;color:var(--navy)}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.muted{color:var(--muted)}.small{font-size:.88rem}
.bar{height:12px;border-radius:99px;background:#e6ecf2;overflow:hidden}
.bar>i{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--accent));border-radius:99px;transition:width .4s}
/* lesson runner */
.runner-top{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.dots{display:flex;gap:6px;margin:10px 0 14px;flex-wrap:wrap}
.dots button{width:30px;height:30px;border-radius:50%;border:2px solid #b9c5d2;background:#fff;color:var(--navy);font-weight:700;cursor:pointer;font-size:.8rem}
.dots button.cur{background:var(--navy);color:#fff;border-color:var(--navy)}
.dots button.done{background:var(--ok);color:#fff;border-color:var(--ok)}
.act{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow)}
.obj{background:var(--tint);border-left:5px solid var(--accent);border-radius:10px;padding:10px 14px;margin:8px 0 14px}
.obj b{color:var(--navy)}
.instr{margin:0 0 14px;font-size:1.02rem}
.fb{margin-top:10px;padding:10px 14px;border-radius:12px;font-weight:600}
.fb.ok{background:var(--okbg);color:var(--ok)}.fb.bad{background:var(--badbg);color:var(--bad)}.fb.info{background:var(--tint);color:var(--navy)}
.item{border-top:1px dashed var(--line);padding:14px 0}.item:first-child{border-top:0}
.item .q{font-size:1.1rem;margin-bottom:8px}
.kind{display:inline-block;font-size:.7rem;font-weight:800;text-transform:uppercase;background:var(--navy);color:#fff;border-radius:6px;padding:2px 7px;margin-right:6px;vertical-align:middle}
.opts{display:flex;flex-wrap:wrap;gap:10px}
.opt{font:inherit;font-size:1rem;padding:10px 16px;border-radius:12px;border:2px solid #b9c5d2;background:#fff;cursor:pointer;color:var(--ink);min-height:44px}
.opt:hover{border-color:var(--navy)}
.opt.sel{border-color:var(--navy);background:var(--tint)}
.opt.good{border-color:var(--ok);background:var(--okbg)}
.opt.wrong{border-color:var(--bad);background:var(--badbg);animation:shake .3s}
.opt.pic{padding:6px;width:120px;height:120px;display:flex;align-items:center;justify-content:center}
.opt.pic svg{width:100%;height:100%}
@keyframes shake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}
.sentence{display:flex;flex-wrap:wrap;gap:8px;min-height:54px;padding:10px;border:2px dashed #b9c5d2;border-radius:12px;background:#fbfcfd;margin-bottom:10px;align-items:center}
.sentence.ordered{flex-direction:column;align-items:stretch}
.chip{font:inherit;font-size:1.05rem;padding:8px 14px;border-radius:10px;border:2px solid var(--navy);background:#fff;color:var(--navy);cursor:pointer;min-height:42px}
.chip.in{background:var(--navy);color:#fff}
.chip.starter{border-color:#b9c5d2;color:var(--ink);font-size:.92rem;padding:5px 11px;min-height:36px}
.chip.starter:hover{border-color:var(--accent-2);background:#fff7ee}
.blank{display:inline-block;min-width:90px;border-bottom:3px solid var(--accent-2);text-align:center;font-weight:700;color:var(--navy);padding:0 6px}
.inline-input{width:150px;display:inline-block;padding:4px 8px;border-radius:8px;border:2px solid #b9c5d2;font:inherit;font-weight:700;text-align:center}
.pic-lg{width:150px;height:150px;margin:0 auto}
.pic-lg svg,.scene svg{width:100%;height:100%;display:block}
.scene{border-radius:14px;overflow:hidden;border:1px solid var(--line);background:#eaf5fb;margin:8px 0}
.flip{text-align:center;padding:10px}
.flip .w{font-size:2rem;font-weight:800;color:var(--navy);font-family:var(--serif)}
.flip .ipa{color:var(--muted);font-size:1rem}
.flip .def{font-size:1.1rem;margin:8px 0}.flip .ex{font-style:italic;color:#37485a}
.match{display:grid;grid-template-columns:1fr 1fr;gap:12px 24px}
.match .opt{width:100%;min-height:56px}
.match .opt.pic{width:100%;height:96px}
.match .opt.done{opacity:.45;border-color:var(--ok);background:var(--okbg)}
.passage{font-size:1.12rem;line-height:1.85;max-width:720px}
.passage p{margin:0 0 .9em}
.vw{background:#fff1d9;border-radius:4px;padding:0 3px;border-bottom:2px dotted var(--accent-2);cursor:help}
.glossary{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.gl{background:var(--tint);border-radius:10px;padding:6px 10px;font-size:.92rem}
.gl b{color:var(--navy)}
.counter{font-size:.88rem;color:var(--muted);margin:4px 0 8px}
.targets{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0}
.tg{border:2px solid #b9c5d2;border-radius:999px;padding:3px 12px;font-weight:700;font-size:.9rem}
.tg.hit{border-color:var(--ok);background:var(--okbg);color:var(--ok)}
.model{background:#f4fbf6;border:2px solid #b8e0c6;border-radius:14px;padding:14px;margin-top:12px}
.model h4{margin:0 0 6px;color:var(--ok)}
.check{display:flex;gap:10px;align-items:flex-start;margin:6px 0}
.check input{width:22px;height:22px;margin-top:2px;flex:none}
.timer{font-size:2rem;font-weight:800;color:var(--navy);font-variant-numeric:tabular-nums}
.rec{display:inline-flex;gap:8px;align-items:center;flex-wrap:wrap}
.rec .dot-rec{width:12px;height:12px;border-radius:50%;background:var(--bad);animation:pulse 1s infinite}
@keyframes pulse{50%{opacity:.3}}
.partner{background:var(--tint);border-radius:14px 14px 14px 2px;padding:10px 14px;margin:8px 0;display:inline-block;max-width:92%}
.ladder{counter-reset:rung;display:grid;gap:10px}
.rung{display:flex;gap:14px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:12px 14px;text-decoration:none;color:inherit}
.rung:hover{border-color:var(--navy)}
.rung .n{width:38px;height:38px;border-radius:50%;background:var(--navy);color:#fff;display:grid;place-items:center;font-weight:800;flex:none}
.rung.done .n{background:var(--ok)}
.lessonrow{display:flex;gap:12px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.pbar{height:8px;margin-top:8px}
.libcard{display:flex;flex-direction:column;gap:8px}
.vslot{aspect-ratio:16/9;border-radius:12px;background:repeating-linear-gradient(45deg,#eef3f7,#eef3f7 12px,#e5ecf2 12px,#e5ecf2 24px);display:grid;place-items:center;color:var(--muted);font-size:.9rem;text-align:center;padding:10px}
.status{display:inline-block;font-weight:800;font-size:.8rem;padding:4px 12px;border-radius:999px}
.status.free{background:var(--okbg);color:var(--ok)}.status.unlocking{background:#fff3e4;color:#8a4b00}.status.coming{background:#e8edf3;color:#4a5a6b}.status.paid{background:#e4ecff;color:#1c3f94}
.ul{margin:.3em 0 .6em;padding-left:1.2em}.ul li{margin:.2em 0}
table.t{border-collapse:collapse;width:100%;font-size:.95rem}table.t th,table.t td{border:1px solid var(--line);padding:6px 10px;text-align:left}table.t th{background:var(--tint)}
.box5{display:flex;gap:6px;align-items:flex-end;height:80px}
.box5 div{flex:1;background:var(--navy);border-radius:6px 6px 0 0;min-height:4px;position:relative;color:#fff;font-size:.75rem;text-align:center}
.box5 span{position:absolute;top:-18px;left:0;right:0;color:var(--ink);font-weight:700}
.footer-learn{margin-top:40px;padding-top:16px;border-top:1px solid var(--line);font-size:.85rem;color:var(--muted)}
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin:10px 0}
.tabs button{font:inherit;padding:7px 14px;border-radius:999px;border:2px solid #b9c5d2;background:#fff;cursor:pointer}
.tabs button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.wordcard{display:flex;gap:12px;align-items:flex-start}
.wordcard .pic{width:64px;height:64px;flex:none}
.wordcard .pic svg{width:100%;height:100%}
.wordcard b{font-size:1.1rem;color:var(--navy)}
@media (max-width:560px){#app{padding:16px 12px 60px}.act{padding:14px;border-radius:16px}.opt.pic{width:calc(50% - 6px)}.match{gap:10px 12px}.learn .header-inner .nav a{font-size:.85rem}}
.act .q{white-space:pre-line}