@import "https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Manrope:wght@400;600;700;800&display=swap";:root{--ink:#202440;--indigo:#343a84;--green:#15775f;--paper:#f8f7f2;--line:#e4e4db;--muted:#6b7081}*{box-sizing:border-box}body{background:var(--paper);color:var(--ink);margin:0;font-family:DM Sans,sans-serif;font-size:16px;line-height:1.6}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer}button:disabled{cursor:default;opacity:.5}a{color:var(--indigo)}button{border:1px solid var(--line);color:var(--ink);background:#fff;border-radius:10px;padding:10px 17px}button:hover{border-color:var(--indigo)}button.primary{background:var(--indigo);color:#fff;border-color:var(--indigo)}button.green{background:var(--green);color:#fff}button.active{color:#303577;background:#e9e9f8;border-color:#9a9cca}.shell{grid-template-columns:250px 1fr;min-height:100vh;display:grid}.sidebar{border-right:1px solid var(--line);background:#fff;flex-direction:column;height:100vh;padding:30px 22px;display:flex;position:sticky;top:0}.brand{letter-spacing:-1px;color:var(--indigo);font-size:26px;font-weight:800}.brand small{letter-spacing:2.5px;color:var(--green);margin-top:-5px;font-size:10px;display:block}.nav{gap:9px;margin-top:45px;display:grid}.nav button{text-align:left;background:0 0;border:0;padding:13px;font-weight:600}.nav .active{background:#eeedf8}.nav span{width:30px;color:var(--green);display:inline-block}.sidebar .bottom{color:var(--muted);border-top:1px solid var(--line);margin-top:auto;padding-top:20px;font-size:12px}.main{min-width:0;padding:0 5vw 60px}.topbar{border-bottom:1px solid var(--line);height:90px;color:var(--muted);justify-content:space-between;align-items:center;gap:15px;font-size:13px;display:flex}.account{align-items:center;gap:9px;display:flex}.avatar{color:var(--green);background:#e1ebe6;border-radius:50%;place-items:center;width:32px;height:32px;font-weight:700;display:grid}.eyebrow{text-transform:uppercase;letter-spacing:2px;color:var(--green);font-size:11px;font-weight:800}h1,h2,h3{font-family:Manrope,sans-serif;line-height:1.2}h1{letter-spacing:-1.7px;margin:15px 0 20px;font-size:clamp(32px,4vw,54px);font-weight:800}h2{letter-spacing:-.8px;font-size:27px}h3{font-size:18px}p{margin:12px 0}.muted{color:var(--muted)}.hero{grid-template-columns:1.35fr 1fr;align-items:center;gap:35px;padding:48px 0 30px;display:grid}.hero p{max-width:580px;color:var(--muted);font-size:17px}.hero-art{background:#ececf5;border-radius:26px;place-items:center;min-height:300px;display:grid;position:relative;overflow:hidden}.orbit{border:1px solid #c6c7e1;border-radius:50%;place-items:center;width:210px;height:210px;display:grid;position:relative}.orbit:before{content:"";border:1px dashed #b4b9d4;border-radius:50%;position:absolute;inset:22px}.big-ipa{color:var(--indigo);font-family:Georgia,serif;font-size:94px}.phon-tag{background:#fff;border-radius:12px;padding:8px 18px;font-size:24px;position:absolute;box-shadow:0 7px 20px #252a5710}.tag1{top:32px;left:25px}.tag2{color:var(--green);bottom:40px;right:20px}.art-note{letter-spacing:2px;color:var(--muted);font-size:11px;position:absolute;bottom:10px}.stats{grid-template-columns:repeat(3,1fr);gap:18px;margin:24px 0 35px;display:grid}.stat{border:1px solid var(--line);background:#fff;border-radius:13px;padding:18px 22px}.stat strong{letter-spacing:-1px;font-family:Manrope;font-size:26px;display:block}.stat span{color:var(--muted);font-size:12px}.section-head{justify-content:space-between;align-items:center;gap:15px;margin-top:25px;display:flex}.filters{flex-wrap:wrap;gap:8px;margin:16px 0 23px;display:flex}.search{border:1px solid var(--line);background:#fff;border-radius:9px;min-width:180px;padding:10px 15px}.grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;display:grid}.card{border:1px solid var(--line);background:#fff;border-radius:16px;padding:24px;transition:transform .15s;position:relative}.card:hover{transform:translateY(-2px)}.card .index{color:var(--muted);letter-spacing:1px;font-size:11px}.card .symbol{color:var(--indigo);margin:10px 0;font-family:Georgia,serif;font-size:43px;display:block}.card h3{margin:0 0 10px}.card p{color:var(--muted);font-size:13px}.card footer{border-top:1px solid var(--line);justify-content:space-between;align-items:center;margin-top:20px;padding-top:16px;font-size:11px;display:flex}.pill{color:#17634e;background:#e9f3ed;border-radius:20px;padding:3px 10px;font-size:11px;font-weight:600;display:inline-block}.btn-row{flex-wrap:wrap;gap:10px;margin:20px 0;display:flex}.lesson-top{align-items:center;gap:25px;padding:35px 0;display:flex}.sound-block{color:var(--indigo);background:#e9e9f5;border-radius:20px;padding:15px 30px;font-family:Georgia,serif;font-size:65px}.lesson-top h1{margin:8px 0;font-size:36px}.tabs{border-bottom:1px solid var(--line);gap:8px;padding-bottom:14px;display:flex;overflow-x:auto}.tabs button{white-space:nowrap}.panel{border:1px solid var(--line);background:#fff;border-radius:16px;margin-top:22px;padding:28px}.two-col{grid-template-columns:1fr 1fr;gap:24px;display:grid}.callout{border-left:3px solid var(--green);background:#edf4ee;border-radius:0 10px 10px 0;margin:18px 0;padding:18px 22px}.note{background:#f3efe3;border-left:3px solid #ab8a41;border-radius:0 10px 10px 0;margin:16px 0;padding:15px 20px;font-size:14px}.steps{counter-reset:steps;gap:14px;display:grid}.step{grid-template-columns:34px 1fr;gap:14px;display:grid}.step:before{counter-increment:steps;content:counter(steps);color:var(--indigo);background:#ececf6;border-radius:50%;place-items:center;width:28px;height:28px;font-size:12px;display:grid}.step strong{display:block}.step p{color:var(--muted);margin:3px 0;font-size:14px}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;border-bottom:1px solid var(--line);vertical-align:top;padding:11px 13px}th{color:var(--green);background:#f5f8f4}.wordbank{flex-wrap:wrap;gap:10px;display:flex}.wordbank button{background:#f6f6fb;border:0}.qcard{border:1px solid var(--line);background:#fff;border-radius:14px;margin:16px 0;padding:24px}.qhead{color:var(--muted);justify-content:space-between;font-size:12px;display:flex}.qprompt{margin:17px 0;font-size:17px;font-weight:600;line-height:1.5}.qtext{background:#f8f7f3;border-radius:9px;padding:18px;font-size:19px}.options{flex-wrap:wrap;gap:10px;display:flex}.options button.selected{border-color:var(--indigo);background:#e9eaf8}.feedback{background:#eaf5ef;border-radius:9px;margin-top:18px;padding:15px;font-size:14px}.feedback.wrong{background:#fff0e8}.response{border:1px solid #ced0d9;border-radius:10px;width:100%;min-height:100px;padding:14px}.short{min-height:50px}.checks{gap:10px;margin-top:14px;display:grid}.checks label{font-size:14px}.checks input{margin-right:8px}.small{font-size:12px}.progress-track{background:#e9e9e3;border-radius:20px;height:6px;margin-top:12px;overflow:hidden}.progress-track div{background:var(--green);height:100%}.audio-settings{flex-wrap:wrap;align-items:center;gap:10px;margin:18px 0;font-size:12px;display:flex}.audio-settings select{border:1px solid var(--line);border-radius:7px;max-width:250px;padding:5px}.audio-settings input{width:90px}.mouth{width:100%;max-width:420px;height:auto}.dialogue p{background:#eeedf7;border-radius:12px;margin-right:30px;padding:14px 20px}.dialogue p:nth-child(2n){background:#eaf3ec;margin-left:30px;margin-right:0}.timer{font-variant-numeric:tabular-nums;color:var(--green);font-size:25px;font-weight:700}.sticky{background:var(--paper);z-index:5;border-bottom:1px solid var(--line);padding:12px 0;position:sticky;top:0}video{background:#24263d;border-radius:12px;width:100%}details{margin-top:14px}summary{cursor:pointer;color:var(--indigo);font-weight:600}.empty{text-align:center;color:var(--muted);padding:70px}.mobile-brand{display:none}.alert{background:#fff1df;border:1px solid #edcda3;border-radius:8px;margin:10px 0;padding:12px}.row{flex-wrap:wrap;align-items:center;gap:12px;display:flex}button.link{background:0 0;border:0;padding:0;font-size:13px;text-decoration:underline}.toc{max-height:420px;overflow:auto}.footer-note{color:var(--muted);margin-top:35px;font-size:12px}@media (max-width:1050px){.shell{grid-template-columns:205px 1fr}.main{padding:0 4vw 40px}.grid{grid-template-columns:repeat(2,1fr)}.hero{grid-template-columns:1fr}.hero-art{display:none}.two-col{grid-template-columns:1fr}}@media (max-width:680px){.shell{display:block}.sidebar{border-right:0;border-bottom:1px solid var(--line);height:auto;padding:15px 18px;position:static}.brand{font-size:21px}.brand small{font-size:8px}.nav{gap:3px;margin-top:16px;display:flex;overflow:auto}.nav button{white-space:nowrap;padding:8px;font-size:12px}.nav span{width:18px}.sidebar .bottom{display:none}.main{padding:0 18px 40px}.topbar{height:65px;font-size:11px}.hero{padding-top:30px}h1{font-size:35px}.stats{gap:8px}.stat{padding:12px}.stat strong{font-size:22px}.stat span{font-size:10px}.grid{grid-template-columns:1fr}.section-head{flex-direction:column;align-items:flex-start}.panel,.qcard{padding:19px}.lesson-top{gap:15px}.lesson-top h1{font-size:25px}.sound-block{padding:15px;font-size:45px}.topbar .breadcrumb{max-width:50%}.tabs button{font-size:13px}.search{width:100%}td,th{padding:8px;font-size:12px}.account{word-break:break-word;max-width:45%}}.buy{background:var(--indigo);color:#fff;border-radius:10px;padding:12px 20px;font-weight:600;text-decoration:none;display:inline-block}