.premium-shell{max-width:1100px;margin:auto;padding:2.5rem 1.2rem 5rem;color:#173c3b}.premium-heading{max-width:760px;margin:1.5rem 0 2rem}.premium-heading h1{font:800 clamp(2rem,5vw,3.3rem)/1.12 Manrope,sans-serif;letter-spacing:-.045em;margin:.6rem 0 1rem}.premium-heading p{color:#60746b;line-height:1.7}.premium-grid,.answer-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.2rem;margin:1.5rem 0}.premium-card,.answer-option{border:1px solid #dbe6de;border-radius:20px;padding:1.5rem;background:#fff;margin-bottom:1.2rem}.premium-card h2,.answer-option h2{font:700 1.3rem/1.4 Manrope,sans-serif;margin:.4rem 0 .8rem}.premium-card p,.answer-option p{line-height:1.65}.answer-option-plus,.premium-highlight{background:linear-gradient(135deg,#f3f8ec,#eaf5ef)}.answer-options{margin-bottom:2rem}.answer-option{margin:0}.premium-price{font:800 2.6rem Manrope,sans-serif;letter-spacing:-.04em;margin:1rem 0}.premium-price small{display:block;font:400 1rem 'DM Sans',sans-serif;letter-spacing:0;color:#64786d}.premium-features{display:grid;gap:.7rem;padding:0;list-style:none}.premium-features li::before{content:'✓';color:#287052;margin-right:.6rem}.premium-note{color:#65766f;font-size:.9rem;line-height:1.65}.premium-form{display:grid;gap:1rem}.premium-form label{font-weight:600;display:grid;gap:.4rem}.premium-form select,.premium-form input,.premium-form textarea,.mock-answer{width:100%;max-width:100%;box-sizing:border-box;border:1px solid #cbdad0;border-radius:10px;padding:.8rem;background:#fff;color:#173c3b;font:inherit}.premium-form select:focus,.premium-form input:focus,.mock-answer:focus{outline:3px solid #b4d5be;outline-offset:2px}.premium-summary{padding:1.2rem;border-radius:14px;background:#f0f6ef;line-height:1.7}.premium-links{display:flex;flex-wrap:wrap;gap:.8rem;margin:1.4rem 0}.premium-table-wrap{overflow-x:auto}.premium-table{width:100%;border-collapse:collapse;font-size:.9rem}.premium-table th,.premium-table td{text-align:left;vertical-align:top;padding:.8rem;border-bottom:1px solid #e2eae4;overflow-wrap:anywhere}.premium-table th{color:#61766b}.premium-badge{display:inline-block;padding:.35rem .7rem;background:#e4f2e6;color:#286246;border-radius:30px;font-size:.8rem}.final-answer-list{margin:2rem 0;display:grid;gap:.7rem}.final-answer-list>div{display:grid;grid-template-columns:80px 1fr;gap:1rem;padding:1rem;border-bottom:1px solid #e0e9e1}.final-answer-list p{margin:0;white-space:pre-wrap;overflow-wrap:anywhere}.mock-toolbar{position:sticky;top:76px;z-index:20;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.7rem;background:#173f3c;color:#fff;padding:1rem 1.3rem;border-radius:14px;margin:1.5rem 0}.mock-toolbar strong{font-size:1.4rem;font-variant-numeric:tabular-nums}.mock-toolbar p{margin:0;font-size:.85rem}.mock-question{border:1px solid #dbe6de;border-radius:18px;padding:1.3rem;margin:1.2rem 0;min-width:0;background:#fff}.mock-question legend{font-weight:800;padding:0 .4rem;font-size:1.05rem}.mock-question .question-prompt{white-space:pre-wrap;line-height:1.75}.mock-choices{display:grid;gap:.6rem;margin:1rem 0}.mock-choice{display:flex;gap:.7rem;align-items:flex-start;border:1px solid #dbe6de;border-radius:10px;padding:.8rem;cursor:pointer}.mock-choice input[type=radio]{width:18px;height:18px;min-height:18px;flex:0 0 18px;padding:0;margin:.2rem 0 0;accent-color:#2c7054}.mock-choice span{flex:1;min-width:0;overflow-wrap:anywhere}.mock-score{font:800 clamp(2.5rem,8vw,4rem) Manrope,sans-serif;letter-spacing:-.04em;color:#1c6b4b}.mock-stats{display:flex;flex-wrap:wrap;gap:1.7rem;margin:1.4rem 0}.mock-stats strong{display:block;font-size:1.4rem}.mock-result{margin:1.2rem 0;padding:1.3rem;border:1px solid #dbe6de;border-radius:16px;background:#fff}.mock-result h3{margin-top:0}.mock-result p{white-space:pre-wrap;line-height:1.7;overflow-wrap:anywhere}.mock-result .solution{background:#f2f7ef;border-radius:12px;padding:1rem}.mock-warning{color:#9a4b15;background:#fff3df;padding:.8rem;border-radius:10px}.mock-loading{width:32px;height:32px;border:3px solid #d5e4d8;border-top-color:#246748;border-radius:50%;animation:mock-spin 1s linear infinite}@keyframes mock-spin{to{transform:rotate(360deg)}}@media(prefers-reduced-motion:reduce){.mock-loading{animation:none}}@media(max-width:700px){.premium-grid,.answer-options{grid-template-columns:1fr}.premium-shell{padding:1.5rem 1rem 3rem}.premium-card,.answer-option{padding:1.1rem}.premium-heading h1{font-size:2.1rem}.mock-toolbar{top:72px;padding:.8rem}.premium-shell .btn{max-width:100%;white-space:normal;text-align:center}.final-answer-list>div{grid-template-columns:55px 1fr;gap:.5rem}.premium-price{font-size:2.1rem}}

/* Free/Plus comparison and the library discovery card. */
.plus-comparison{align-items:start;gap:1.5rem}.plus-plan-card{border:2px solid #689a79;box-shadow:0 10px 28px #163f3510}.plus-plan-card h3{margin:1.7rem 0 .8rem;font-size:1.05rem}.plus-plan-card .premium-features li{position:relative;padding-left:1.4rem;line-height:1.55}.plus-plan-card .premium-features li::before{position:absolute;left:0}.free-plan-card{background:#fdfefb}.plus-comparison .payment-button{width:100%;white-space:normal}.library-plus-promo{display:flex;align-items:center;gap:1.5rem;justify-content:space-between;padding:1.4rem 1.6rem;margin:1.7rem 0 2rem;border:1px solid #c8dcca;border-left:4px solid #427958;border-radius:16px;background:linear-gradient(110deg,#edf5e9,#f9fbf4)}.library-plus-promo h3{font:800 1.3rem/1.3 Manrope,sans-serif;margin:.45rem 0}.library-plus-promo p{max-width:700px;margin:.5rem 0;line-height:1.6;color:#48664f}.library-plus-promo small{color:#526f59}.library-plus-promo .btn{flex-shrink:0}.source-needed{padding:1.1rem;border:1px solid #e1d8bf;border-radius:14px;background:#fffaf0;line-height:1.6;margin:1.4rem 0}.source-needed h2{font-size:1.15rem}.source-needed p:last-child{margin-bottom:0}@media(max-width:700px){.library-plus-promo{align-items:stretch;flex-direction:column;padding:1.2rem}.library-plus-promo .btn{text-align:center}.plus-plan-card .premium-features li{overflow-wrap:anywhere}}

/* Connected study intelligence. */
.intelligence-tabs{display:flex;gap:.4rem;flex-wrap:wrap;border-bottom:1px solid #dbe6de;padding-bottom:1rem;margin-bottom:1.6rem}.intelligence-tabs a{border:1px solid #dbe6de;border-radius:30px;padding:.65rem 1rem;color:#28584a;text-decoration:none;font-weight:600;font-size:.92rem}.intelligence-tabs a[aria-current]{background:#173f3c;color:#fff;border-color:#173f3c}.intelligence-filters{grid-template-columns:1fr 1fr auto;align-items:end;padding:1.2rem;background:#f1f6ee;border-radius:16px}.intelligence-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}.intelligence-stats article{min-width:0;padding:1.2rem}.intelligence-stats span{font-size:.85rem;color:#5f7369}.intelligence-stats strong{display:block;font:800 2.2rem Manrope,sans-serif;margin-top:.65rem}.intelligence-stats .topic-stat{font-size:1rem;line-height:1.6;overflow-wrap:anywhere}.intelligence-topic{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}.intelligence-result{display:flex;justify-content:space-between;gap:1rem;text-decoration:none;color:#244d3e;padding:1rem 0;border-bottom:1px solid #dbe6de}.intelligence-result strong{font-size:1.3rem}.intelligence-preview{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin:1.7rem 0}.intelligence-preview>div{background:#ffffffa3;border:1px solid #d8e5d7;border-radius:14px;padding:1.2rem}.intelligence-check{display:flex!important;align-items:center;gap:.65rem!important;cursor:pointer;line-height:1.6}.intelligence-check input[type=checkbox]{width:19px;height:19px;min-width:19px;accent-color:#287052;margin:0}.intelligence-focused{display:grid;gap:.7rem}.intelligence-focused label{font-weight:400}.premium-form fieldset{border:1px solid #cbdad0;border-radius:12px;padding:1rem;min-width:0}.premium-form fieldset[hidden]{display:none}.intelligence-question{white-space:pre-wrap;overflow-wrap:anywhere}.intelligence-disclaimer{border-top:1px solid #dbe6de;padding-top:1.4rem;margin-top:2.4rem}.premium-shell meter{display:block;width:100%;height:14px;margin:1rem 0;accent-color:#287052}.premium-shell details{margin:1rem 0;overflow-wrap:anywhere}.premium-shell summary{cursor:pointer;font-weight:600;color:#28584a;padding:.5rem 0}.intelligence-topic-form .premium-card{margin-bottom:1rem}.intelligence-topic-form>.btn{position:sticky;bottom:1rem;box-shadow:0 5px 20px #173f3c22}.intelligence-tabs a:focus-visible,.intelligence-check input:focus-visible{outline:3px solid #87b79a;outline-offset:3px}
@media(max-width:700px){.intelligence-filters{grid-template-columns:1fr 1fr}.intelligence-filters button{grid-column:1/-1}.intelligence-stats{grid-template-columns:1fr 1fr;gap:.7rem}.intelligence-preview{grid-template-columns:1fr}.intelligence-topic{align-items:flex-start}.intelligence-topic>.btn{width:100%}.intelligence-tabs{gap:.5rem}.intelligence-tabs a{padding:.55rem .8rem}.intelligence-topic-form>.btn{width:100%}}