#billing-academy-root{--ba-ink:#173c36;--ba-muted:#6d7f79;--ba-sage:#e6f1eb;--ba-sage2:#d5e8dd;--ba-teal:#2d7569;--ba-cream:#fbf7ef;--ba-white:#fff;--ba-peach:#f8e3d3;--ba-gold:#d6a54a;--ba-line:#dce8e2;--ba-shadow:0 18px 45px rgba(28,73,63,.10);--ba-radius:24px;color:var(--ba-ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;line-height:1.5}
#billing-academy-root *{box-sizing:border-box}
#billing-academy-root button,#billing-academy-root input{font:inherit}
#billing-academy-root .ba-loading{padding:40px;border:1px solid var(--ba-line);border-radius:24px;background:#fff}
#billing-academy-root .ba-shell{min-height:760px;display:grid;grid-template-columns:240px minmax(0,1fr);background:linear-gradient(180deg,#f8fbf8 0%,#fdfaf5 100%);border:1px solid var(--ba-line);border-radius:28px;overflow:hidden;box-shadow:var(--ba-shadow)}
#billing-academy-root .ba-sidebar{padding:26px 20px;background:rgba(255,255,255,.9);border-right:1px solid var(--ba-line)}
#billing-academy-root .ba-brand{display:flex;gap:12px;align-items:center;margin-bottom:28px}
#billing-academy-root .ba-brandmark{width:44px;height:44px;border-radius:14px;background:linear-gradient(145deg,var(--ba-teal),#74aa91);display:grid;place-items:center;color:white;font-weight:800;box-shadow:0 10px 25px rgba(45,117,105,.25)}
#billing-academy-root .ba-brand h2{font-size:16px;margin:0;color:var(--ba-ink)}
#billing-academy-root .ba-brand small{color:var(--ba-muted)}
#billing-academy-root .ba-nav{display:grid;gap:8px}
#billing-academy-root .ba-nav button{border:0;background:transparent;text-align:left;padding:12px 14px;border-radius:14px;color:#557069;cursor:pointer}
#billing-academy-root .ba-nav button.is-active{background:var(--ba-sage);color:var(--ba-ink);font-weight:700}
#billing-academy-root .ba-nav button:hover{background:#f1f6f3}
#billing-academy-root .ba-nav .ba-ico{display:inline-block;width:28px}
#billing-academy-root .ba-sidecard{margin-top:26px;padding:16px;border-radius:18px;background:linear-gradient(145deg,#f6efe1,#fff);border:1px solid #eee1ca}
#billing-academy-root .ba-sidecard b{display:block;margin-bottom:4px}
#billing-academy-root .ba-sidecard small{color:var(--ba-muted);line-height:1.4}
#billing-academy-root .ba-mini-progress{height:7px;border-radius:8px;background:#eee4d3;margin-top:12px;overflow:hidden}
#billing-academy-root .ba-mini-progress span{display:block;height:100%;background:var(--ba-gold);transition:width .25s}
#billing-academy-root .ba-main{padding:34px 38px 70px;min-width:0}
#billing-academy-root .ba-topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:28px;gap:18px}
#billing-academy-root .ba-eyebrow{font-size:12px;text-transform:uppercase;letter-spacing:.12em;color:var(--ba-teal);font-weight:800}
#billing-academy-root .ba-topbar h1{font-size:30px;margin:4px 0 0;color:var(--ba-ink)}
#billing-academy-root .ba-avatar{width:44px;height:44px;border-radius:50%;background:var(--ba-peach);display:grid;place-items:center;font-weight:800;flex:0 0 auto}
#billing-academy-root .ba-view{display:none}
#billing-academy-root .ba-view.is-active{display:block}
#billing-academy-root .ba-card{background:rgba(255,255,255,.95);border:1px solid var(--ba-line);border-radius:var(--ba-radius);box-shadow:var(--ba-shadow)}
#billing-academy-root .ba-hero{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(260px,.8fr);gap:22px}
#billing-academy-root .ba-welcome{padding:30px;background:linear-gradient(135deg,#edf7f1 0%,#fff 55%,#fbf0df 100%)}
#billing-academy-root .ba-welcome h3{font-size:34px;margin:8px 0 12px;max-width:680px;line-height:1.08;color:var(--ba-ink)}
#billing-academy-root .ba-welcome p,#billing-academy-root .ba-muted{color:var(--ba-muted)}
#billing-academy-root .ba-welcome p{max-width:700px;line-height:1.65}
#billing-academy-root .ba-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:0;background:var(--ba-ink);color:white;padding:13px 18px;border-radius:14px;font-weight:700;cursor:pointer;text-decoration:none}
#billing-academy-root .ba-btn:hover{opacity:.92;color:#fff}
#billing-academy-root .ba-btn.secondary{background:white;color:var(--ba-ink);border:1px solid var(--ba-line)}
#billing-academy-root .ba-progress-card{padding:24px}
#billing-academy-root .ba-ring{width:120px;height:120px;border-radius:50%;margin:10px auto 18px;background:conic-gradient(var(--ba-teal) var(--ba-progress,0%),#e9efec 0);display:grid;place-items:center}
#billing-academy-root .ba-ring:after{content:attr(data-pct);width:88px;height:88px;border-radius:50%;background:white;display:grid;place-items:center;font-size:22px;font-weight:800}
#billing-academy-root .ba-center{text-align:center}
#billing-academy-root .ba-grid3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:22px}
#billing-academy-root .ba-stat{padding:20px}
#billing-academy-root .ba-stat .ba-big{font-size:26px;font-weight:800;margin:6px 0}
#billing-academy-root .ba-section-title{display:flex;align-items:end;justify-content:space-between;margin:34px 2px 15px;gap:12px}
#billing-academy-root .ba-section-title h3{margin:0;font-size:20px}
#billing-academy-root .ba-pill{font-size:12px;padding:6px 10px;border-radius:999px;background:var(--ba-sage);color:var(--ba-teal);font-weight:700;white-space:nowrap}
#billing-academy-root .ba-module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
#billing-academy-root .ba-module{padding:22px;position:relative;overflow:hidden}
#billing-academy-root .ba-module .ba-num{font-size:12px;font-weight:800;color:var(--ba-teal)}
#billing-academy-root .ba-module h4{font-size:19px;margin:7px 0;color:var(--ba-ink)}
#billing-academy-root .ba-module p{color:var(--ba-muted);font-size:14px;line-height:1.55}
#billing-academy-root .ba-bar{height:8px;background:#edf2ef;border-radius:999px;overflow:hidden;margin:14px 0}
#billing-academy-root .ba-bar span{height:100%;display:block;background:var(--ba-teal)}
#billing-academy-root .ba-badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:6px 9px;background:#f7efe3;font-size:11px;color:#775f3a;font-weight:700}
#billing-academy-root .ba-lesson-list{display:grid;gap:12px;margin-top:14px}
#billing-academy-root .ba-lesson-row{display:flex;justify-content:space-between;gap:12px;align-items:center;border:1px solid var(--ba-line);background:#fff;border-radius:15px;padding:13px 14px;cursor:pointer;text-align:left;width:100%}
#billing-academy-root .ba-lesson-row:hover{background:#f8fbf9}
#billing-academy-root .ba-lesson-row.is-done{background:#edf8f1;border-color:#cfe6d7}
#billing-academy-root .ba-lesson-row small{color:var(--ba-muted)}
#billing-academy-root .ba-lesson-shell{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:22px}
#billing-academy-root .ba-lesson{padding:28px;min-width:0}
#billing-academy-root .ba-lesson h2{margin:4px 0 8px;font-size:30px;color:var(--ba-ink)}
#billing-academy-root .ba-objective{font-size:14px;color:var(--ba-muted);margin-bottom:22px}
#billing-academy-root .ba-flow{display:flex;gap:10px;align-items:stretch;flex-wrap:wrap;margin:20px 0}
#billing-academy-root .ba-step{flex:1 1 140px;padding:15px;border-radius:16px;background:var(--ba-sage);font-size:13px;font-weight:700;position:relative}
#billing-academy-root .ba-step:not(:last-child):after{content:"→";position:absolute;right:-9px;top:50%;transform:translateY(-50%);color:#8aa69b}
#billing-academy-root .ba-callout{padding:16px;border-left:4px solid var(--ba-teal);background:#f4faf6;border-radius:12px;margin:18px 0}
#billing-academy-root .ba-source{padding:16px;border-radius:14px;background:#fff8e9;border:1px solid #efdfb9;margin:18px 0}
#billing-academy-root .ba-source strong{display:block;color:#70582a;margin-bottom:4px}
#billing-academy-root .ba-content-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin:18px 0}
#billing-academy-root .ba-content-card{padding:18px;border-radius:16px;background:#f7faf8;border:1px solid var(--ba-line)}
#billing-academy-root .ba-content-card h4{margin:0 0 6px}
#billing-academy-root .ba-lesson p{font-size:16px;line-height:1.75}
#billing-academy-root .ba-lesson-side{padding:22px;height:max-content;position:sticky;top:18px}
#billing-academy-root .ba-checklist{display:grid;gap:10px}
#billing-academy-root .ba-check{padding:11px 12px;border-radius:12px;background:#f6f8f7;font-size:13px}
#billing-academy-root .ba-check.done{background:#e9f5ed}
#billing-academy-root .ba-quiz{margin-top:26px;padding-top:22px;border-top:1px solid var(--ba-line)}
#billing-academy-root .ba-choice{width:100%;padding:12px;margin:7px 0;border-radius:12px;border:1px solid var(--ba-line);background:white;text-align:left;cursor:pointer;color:var(--ba-ink)}
#billing-academy-root .ba-choice.good{border-color:#8dc4a4;background:#edf8f1}
#billing-academy-root .ba-choice.bad{border-color:#dca29a;background:#fff2f0}
#billing-academy-root .ba-feedback{min-height:24px;font-size:13px;font-weight:700;margin-top:10px}
#billing-academy-root .ba-lesson-actions{display:flex;gap:10px;justify-content:space-between;flex-wrap:wrap;margin-top:24px}
#billing-academy-root .ba-practice-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:20px}
#billing-academy-root .ba-scenario{padding:26px}
#billing-academy-root .ba-scenario-box{background:#f8f4ec;border-radius:18px;padding:18px;margin:18px 0;line-height:1.6}
#billing-academy-root .ba-answer{display:none;background:#edf7f1;border-radius:16px;padding:16px;margin-top:15px}
#billing-academy-root .ba-answer.show{display:block}
#billing-academy-root .ba-tagrow{display:flex;gap:8px;flex-wrap:wrap}
#billing-academy-root .ba-tag{font-size:11px;padding:6px 9px;border-radius:999px;background:#eef3f0;color:#567269}
#billing-academy-root .ba-scorebox{padding:22px;height:max-content}
#billing-academy-root .ba-scoreline{display:flex;justify-content:space-between;padding:12px 0;border-bottom:1px solid var(--ba-line)}
#billing-academy-root .ba-library-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
#billing-academy-root .ba-resource{padding:20px}
#billing-academy-root .ba-resource h4{margin:10px 0 6px}
#billing-academy-root .ba-resource p{font-size:13px;color:var(--ba-muted);line-height:1.55}
#billing-academy-root .ba-resource .ba-src{font-size:11px;color:var(--ba-teal);font-weight:700;margin-top:12px}
#billing-academy-root .ba-rule-list{display:grid;gap:10px;margin-top:14px;padding-left:18px;color:var(--ba-muted)}
#billing-academy-root .ba-glossary-intro{padding:24px;margin-bottom:18px;background:linear-gradient(135deg,#edf7f1,#fff)}
#billing-academy-root .ba-glossary-search{width:100%;padding:14px 16px;border:1px solid var(--ba-line);border-radius:15px;outline:0;margin-top:14px;background:white}
#billing-academy-root .ba-glossary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
#billing-academy-root .ba-glossary-card{padding:18px}
#billing-academy-root .ba-glossary-card h4{margin:0 0 7px;font-size:17px}
#billing-academy-root .ba-glossary-card p{margin:0;color:var(--ba-muted);font-size:13px;line-height:1.55}
#billing-academy-root .ba-letter{font-size:11px;color:var(--ba-teal);font-weight:800;text-transform:uppercase;letter-spacing:.1em;margin-bottom:6px}
#billing-academy-root .ba-glossary-hint{display:inline-flex;gap:7px;align-items:center;margin-top:10px;font-size:12px;color:var(--ba-muted);background:#f6faf7;border:1px solid var(--ba-line);padding:7px 10px;border-radius:999px}
#billing-academy-root .ba-glossary-term{position:relative;display:inline-block;border-bottom:2px dotted #75a995;cursor:help;font-weight:650;color:#245e55;outline:none}
#billing-academy-root .ba-glossary-term:after{content:attr(data-def);position:absolute;left:50%;bottom:calc(100% + 10px);transform:translateX(-50%) translateY(4px);width:min(300px,78vw);padding:12px 14px;border-radius:14px;background:#173c36;color:white;font-size:12px;font-weight:500;line-height:1.45;box-shadow:0 14px 35px rgba(23,60,54,.22);opacity:0;visibility:hidden;pointer-events:none;z-index:50;transition:.16s}
#billing-academy-root .ba-glossary-term:before{content:"";position:absolute;left:50%;bottom:calc(100% + 4px);transform:translateX(-50%);border:6px solid transparent;border-top-color:#173c36;opacity:0;visibility:hidden;z-index:51;transition:.16s}
#billing-academy-root .ba-glossary-term:hover:after,#billing-academy-root .ba-glossary-term:focus:after,#billing-academy-root .ba-glossary-term:hover:before,#billing-academy-root .ba-glossary-term:focus:before{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
#billing-academy-root .ba-coach{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px}
#billing-academy-root .ba-chat{padding:22px;min-height:570px;display:flex;flex-direction:column}
#billing-academy-root .ba-messages{flex:1;display:flex;flex-direction:column;gap:14px;max-height:500px;overflow:auto;padding-right:4px}
#billing-academy-root .ba-bubble{max-width:82%;padding:14px 16px;border-radius:18px;line-height:1.5;font-size:14px}
#billing-academy-root .ba-bot{background:var(--ba-sage);border-bottom-left-radius:6px}
#billing-academy-root .ba-user{background:var(--ba-ink);color:white;align-self:flex-end;border-bottom-right-radius:6px}
#billing-academy-root .ba-composer{display:flex;gap:10px;margin-top:18px}
#billing-academy-root .ba-composer input{flex:1;padding:13px 15px;border:1px solid var(--ba-line);border-radius:14px;outline:0;min-width:0}
#billing-academy-root .ba-composer button{border:0;background:var(--ba-teal);color:white;border-radius:14px;padding:0 18px;font-weight:800;cursor:pointer}
#billing-academy-root .ba-coach-side{padding:22px;height:max-content}
#billing-academy-root .ba-coach-side button{width:100%;margin:6px 0;padding:11px;border-radius:12px;border:1px solid var(--ba-line);background:white;text-align:left;cursor:pointer;color:var(--ba-ink)}
#billing-academy-root .ba-source-notice{font-size:12px;padding:12px;border-radius:12px;background:#fff8e9;color:#6e5933;margin-top:14px}
#billing-academy-root .ba-mobilebar{display:none}
@media(max-width:980px){#billing-academy-root .ba-shell{grid-template-columns:1fr;border-radius:22px}#billing-academy-root .ba-sidebar{display:none}#billing-academy-root .ba-main{padding:24px 18px 90px}#billing-academy-root .ba-hero,#billing-academy-root .ba-lesson-shell,#billing-academy-root .ba-practice-grid,#billing-academy-root .ba-coach{grid-template-columns:1fr}#billing-academy-root .ba-lesson-side{position:static}#billing-academy-root .ba-mobilebar{display:grid;grid-template-columns:repeat(6,1fr);position:sticky;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--ba-line)}#billing-academy-root .ba-mobilebar button{border:0;background:#fff;padding:12px 4px;color:var(--ba-ink);cursor:pointer}#billing-academy-root .ba-module-grid,#billing-academy-root .ba-library-grid{grid-template-columns:1fr}}
@media(max-width:680px){#billing-academy-root .ba-main{padding:20px 13px 80px}#billing-academy-root .ba-topbar h1{font-size:24px}#billing-academy-root .ba-welcome h3{font-size:27px}#billing-academy-root .ba-grid3{grid-template-columns:1fr}#billing-academy-root .ba-glossary-grid,#billing-academy-root .ba-content-cards{grid-template-columns:1fr}#billing-academy-root .ba-glossary-term:after{left:0;transform:none;bottom:calc(100% + 9px)}#billing-academy-root .ba-glossary-term:hover:after,#billing-academy-root .ba-glossary-term:focus:after{transform:none}#billing-academy-root .ba-glossary-term:before{left:14px;transform:none}#billing-academy-root .ba-step:not(:last-child):after{display:none}#billing-academy-root .ba-composer{flex-direction:column}#billing-academy-root .ba-composer button{padding:12px}}