:root{--navy:#172b4d;--teal:#087f8c;--ink:#23344a;--muted:#657384;--line:#e2e7ea;--bg:#f6f8f8;--pale:#e8f4f2;--amber:#ac6315}*{box-sizing:border-box}body{margin:0;background:var(--bg);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);font-size:16px;line-height:1.55}button,input,select{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}a{color:var(--teal)}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #52bdc1;outline-offset:4px}header{background:white;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.header-inner{max-width:1120px;margin:auto;min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:28px;padding:18px 32px}.brand{display:flex;align-items:center;text-decoration:none;color:var(--navy);font-weight:750;font-size:25px;letter-spacing:-1px}.brand-symbol{color:var(--teal);margin-right:10px;font-size:34px;line-height:1;transform:rotate(-5deg)}nav{display:flex;gap:8px}nav button{background:none;border:0;border-radius:9px;color:var(--muted);font-size:14px;font-weight:650;padding:10px 16px}nav button.active{background:var(--pale);color:var(--teal)}.avatar{background:#eef1f4;border-radius:50%;height:36px;width:36px;display:grid;place-items:center;font-size:13px;font-weight:700;color:var(--navy)}main{max-width:1060px;margin:0 auto;padding:44px 30px 60px}.eyebrow{font-size:11px;letter-spacing:1.7px;text-transform:uppercase;color:var(--teal);font-weight:750;margin-bottom:9px}h1{font-size:clamp(28px,4vw,38px);line-height:1.2;letter-spacing:-1.2px;margin:0 0 12px;color:var(--navy);font-weight:720}h2{font-size:21px;letter-spacing:-.5px;margin:0 0 10px;color:var(--navy)}h3{font-size:17px;margin:0 0 7px}p{margin:0 0 14px}.muted{color:var(--muted)}.intro{margin-bottom:30px;max-width:640px}.hero{display:grid;grid-template-columns:1.25fr 1fr;gap:28px;background:var(--navy);color:white;padding:34px;border-radius:18px;margin-bottom:28px;overflow:hidden}.hero h2{color:white;font-size:28px;line-height:1.2}.hero .muted{color:#c9d6e6}.hero .eyebrow{color:#80d5d0}.hero .btn{background:#fff;color:var(--navy);margin-top:9px}.hero-art{position:relative;min-height:175px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;background:#213956;border:1px solid #3a526b;border-radius:12px;transform:rotate(-2deg);padding:32px 20px 20px}.hero-equation{font-size:31px;font-weight:650;text-align:center;overflow-wrap:anywhere}.hero-caption{font-size:12px;color:#abc8d4;position:static}.hero-check{background:#74c8bd;color:#17364b;width:30px;height:30px;display:grid;place-items:center;border-radius:50%;position:absolute;top:18px;right:18px}.btn{border:0;border-radius:10px;padding:12px 20px;font-weight:650;font-size:14px;background:var(--teal);color:white;display:inline-flex;align-items:center;justify-content:center;gap:12px}.btn.secondary{background:white;color:var(--ink);border:1px solid var(--line)}.btn.link{background:transparent;color:var(--teal);padding:9px 0}.btn.danger{color:#a33e3e}.btn.full{width:100%}.section-head{display:flex;align-items:center;justify-content:space-between;margin:28px 0 15px;gap:14px}.section-head h2{margin:0}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.card{background:white;border:1px solid var(--line);border-radius:14px;padding:25px}.card p{font-size:14px}.skill-card{display:flex;gap:18px;align-items:flex-start}.skill-icon{display:grid;place-items:center;flex:none;width:46px;height:46px;border-radius:11px;background:var(--pale);color:var(--teal);font-size:25px;font-weight:650}.skill-body{flex:1}.skill-body h3{font-size:16px}.card-footer{display:flex;justify-content:space-between;align-items:center;margin-top:20px;gap:12px}.badge{font-size:11px;font-weight:650;background:#f1f3f5;color:var(--muted);border-radius:6px;padding:4px 8px}.badge.good{background:var(--pale);color:var(--teal)}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.stat-number{font-size:27px;font-weight:700;color:var(--navy)}.stat-label{font-size:12px;color:var(--muted)}.small{font-size:12px}.footer{margin-top:36px;border-top:1px solid var(--line);padding-top:18px;color:var(--muted);display:flex;justify-content:space-between;gap:16px;font-size:11px}.practice-layout{max-width:700px;margin:0 auto}.back{background:none;border:0;color:var(--muted);padding:0;margin-bottom:20px;font-size:13px}.progress-track{height:6px;background:#e6eeed;border-radius:8px;margin:14px 0 28px;overflow:hidden}.progress-fill{height:100%;background:var(--teal);transition:width .3s}.row{display:flex;justify-content:space-between;align-items:center;gap:14px}.question-card{padding:32px}.question{font-size:clamp(23px,4vw,32px);line-height:1.4;letter-spacing:-.5px;margin:24px 0 30px;color:var(--navy);font-weight:550}.field-label{display:block;font-size:13px;font-weight:600;margin-bottom:8px}.answer-input{width:100%;border:1px solid #bac7cd;border-radius:9px;padding:13px 14px;background:white;color:var(--ink);font-size:18px}.answer-wrap{display:flex;align-items:center;gap:15px;margin-bottom:10px}.suffix{font-size:24px}.feedback{border-radius:10px;background:#eaf5ee;color:#28593d;padding:18px;margin-top:22px;font-size:14px}.feedback.incorrect{background:#fff3e6;color:#784c21}.feedback strong{display:block;margin-bottom:7px}.feedback p:last-child{margin:0}.hint{margin:18px 0;border-left:3px solid #e8b05b;padding:12px 16px;background:#fff9ee;font-size:14px}.example{background:#f3f7f7;border-radius:11px;padding:22px;margin:22px 0}.example .question{margin:0 0 14px;font-size:26px}.example ol{padding-left:20px;font-size:14px}.example li{margin:10px 0}.training-actions{display:flex;justify-content:space-between;gap:15px;margin-top:22px}.notice{background:#edf4f7;color:#466276;padding:14px 18px;border-radius:10px;font-size:13px;margin:18px 0}.error{color:#a33e3e;font-size:13px;margin-top:8px}.test-layout{display:grid;grid-template-columns:230px 1fr;gap:22px}.question-nav{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}.q-nav{border:1px solid var(--line);border-radius:7px;aspect-ratio:1;background:white;color:var(--muted);font-size:13px}.q-nav.answered{background:var(--pale);color:var(--teal)}.q-nav.current{border:2px solid var(--teal);color:var(--teal)}.timer{font-size:26px;font-weight:700;font-variant-numeric:tabular-nums}.test-sidebar{align-self:start}.select{width:100%;border:1px solid #bbc8ce;padding:12px;background:white;border-radius:9px;color:var(--ink);margin:7px 0 20px}.test-details{display:flex;gap:20px;padding:20px 0;border-top:1px solid var(--line);margin-top:10px;font-size:13px}.result-score{width:125px;height:125px;border:8px solid #d9eeeb;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:50%;margin:20px auto;color:var(--teal);font-size:32px;font-weight:750}.result-score small{font-size:12px;color:var(--muted);font-weight:500}.center{text-align:center}.review-row{border-top:1px solid var(--line);padding:18px 0}.review-row:first-child{border-top:0}.review-row .question{font-size:18px;margin:10px 0}.review-meta{font-size:12px}.progress-item{display:grid;grid-template-columns:1fr auto;gap:15px;padding:20px 0;border-bottom:1px solid var(--line)}.progress-item:last-child{border:0}.progress-item .progress-track{margin:10px 0 5px}.empty{padding:34px;text-align:center}.test-history{display:flex;justify-content:space-between;gap:20px;padding:15px 0;border-top:1px solid var(--line);font-size:14px}.toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:var(--navy);color:white;padding:13px 20px;border-radius:10px;font-size:13px;z-index:10}.brand img{width:190px;height:48px;object-fit:contain}.practice-layout .intro{margin-bottom:20px}.confirmed{border:1px solid #e0c19b;background:#fff8ef;border-radius:10px;padding:18px;margin-top:20px}.confirmed p{font-size:14px}.confirm-actions{display:flex;gap:10px;flex-wrap:wrap}@media(max-width:720px){.header-inner{padding:12px 18px;flex-wrap:wrap;gap:8px;min-height:74px}.brand img{width:160px;height:40px}.avatar{display:none}nav{width:100%;justify-content:space-between;gap:0}nav button{padding:9px 10px;font-size:13px}main{padding:28px 18px 40px}.hero{grid-template-columns:1fr;padding:25px;gap:20px}.hero-art{min-height:145px}.grid{grid-template-columns:1fr}.card{padding:22px}.stats{gap:8px}.stats .card{padding:15px}.stat-number{font-size:22px}.test-layout{grid-template-columns:1fr}.test-sidebar{display:flex;flex-wrap:wrap;align-items:center;gap:15px}.test-sidebar .question-nav{width:100%;grid-template-columns:repeat(12,1fr);gap:4px;margin:0}.q-nav{font-size:11px}.test-sidebar p{margin:0}.question-card{padding:24px}.footer{flex-direction:column}.training-actions{flex-wrap:wrap}.hero-equation{font-size:27px}.progress-item h3{font-size:15px}}@media(prefers-reduced-motion:reduce){*{transition:none!important}}
/* Keep touch controls comfortable and narrow layouts contained. */
.btn,nav button{min-height:44px}.hero>div,.skill-body,.test-layout>*{min-width:0}.card-footer{flex-wrap:wrap}.test-details{flex-wrap:wrap}.test-layout .question-card{min-width:0}
@media(max-width:720px){.test-sidebar .question-nav{grid-template-columns:repeat(auto-fit,minmax(44px,1fr));gap:8px}.q-nav{min-height:44px;font-size:13px}.test-sidebar{min-width:0}.answer-wrap{min-width:0}.answer-input{min-width:0}.training-actions .btn{flex:1}.back{min-height:44px}.hero-equation{font-size:25px}}

.bank-filters{display:grid;grid-template-columns:1fr 1fr 1.5fr auto;gap:16px;align-items:end}.bank-filters .select{margin:0}.bank-filters>*{min-width:0}.bank-card h2{font-size:18px;line-height:1.5}.bank-card details{margin-top:16px}.bank-card summary{cursor:pointer;color:var(--teal);min-height:44px}.bank-card details p{margin-top:12px}.section-head{flex-wrap:wrap}.suffix{font-size:18px;white-space:nowrap}.bank-card p{overflow-wrap:anywhere}
@media(max-width:720px){.bank-filters{grid-template-columns:1fr}nav button{padding:9px 7px;font-size:12px}.row{flex-wrap:wrap}}

.parent-live{margin:20px 0}.parent-checks{display:grid;gap:4px;margin:14px 0}.parent-checks label{display:flex;gap:10px;align-items:center;min-height:44px;font-size:14px}.parent-checks input{width:20px;height:20px;flex:none}.report-body{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;background:var(--bg);padding:18px;border-radius:10px;margin:16px 0}.parent-live p:last-child{margin:0}
@media(max-width:480px){nav{display:grid;grid-template-columns:repeat(3,1fr);gap:4px}.stats .stat-label{overflow-wrap:anywhere}.stats .card{padding:12px}}

.learner-bar{display:flex;align-items:center;gap:16px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin-bottom:28px;padding-bottom:16px}.learner-bar .select{margin:0;min-width:180px}.learner-bar .field-label{margin-bottom:4px}.learner-bar .small{flex:1}.family-invite,.family-overview{margin:0 0 24px}.family-overview .section-head{margin:0 0 12px}.family-children{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:12px}.child-summary{border:1px solid var(--line);border-radius:10px;padding:16px;text-align:left;background:white;min-height:72px}.child-summary strong,.child-summary span{display:block}.child-summary span{font-size:12px;color:var(--muted);margin-top:5px}.child-summary.selected{border:2px solid var(--teal);background:var(--pale)}.profile-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}.profile-grid>*{min-width:0}.profile-wide{grid-column:1/-1}.profile-grid .select{margin:0}.profile-grid .small{margin:8px 0 0}.child-fields{background:white;border:1px solid var(--line);border-radius:14px;padding:24px;margin:24px 0;min-width:0}.child-fields legend{font-weight:700;color:var(--navy);padding:0 8px}.family-fields{display:grid;grid-template-columns:1fr}.family-price strong{font-size:18px}.family-price{line-height:1.8}
@media(max-width:600px){.profile-grid{grid-template-columns:1fr}.profile-wide{grid-column:auto}.learner-bar .small{flex-basis:100%}.learner-bar>div{flex:1;min-width:0}.learner-bar .select{min-width:0}.child-fields{padding:20px}}

.student-summary{margin-top:20px}.student-email-check{display:flex;gap:10px;align-items:center;font-size:14px;min-height:44px;margin:12px 0}.student-email-check input{width:20px;height:20px;flex:none}nav button{padding-left:12px;padding-right:12px}
@media(min-width:721px) and (max-width:1080px){.header-inner{flex-wrap:wrap;gap:12px}nav{order:3;width:100%;justify-content:center}.avatar{margin-left:auto}}

.nav-more{display:none}.price-toggle{display:flex;gap:8px;flex-wrap:wrap}.price-toggle .btn{flex:1}.price-amount{font-size:40px;font-weight:750;color:var(--navy);margin:24px 0 10px;letter-spacing:-1px}.price-amount span{font-size:17px;font-weight:500;letter-spacing:0}.plan-features{padding-left:20px;margin:14px 0 24px;font-size:14px}.plan-features li{margin:10px 0}
@media(max-width:720px){nav{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:2px}nav>button[data-view=bank],nav>button[data-view=parents],nav>button[data-view=papers],nav>button[data-view=pricing]{display:none}.nav-more{display:block;position:relative;font-size:12px;color:var(--muted)}.nav-more summary{display:flex;align-items:center;justify-content:center;min-height:44px;cursor:pointer;list-style:none}.nav-menu{position:absolute;right:0;top:100%;width:180px;background:white;border:1px solid var(--line);border-radius:10px;padding:8px;box-shadow:0 8px 24px #172b4d22}.nav-menu button{display:block;text-align:left;width:100%}.price-amount{font-size:34px}}

.training-overview{margin-top:24px}.training-overview h2{margin:0 0 10px}.training-overview>p{margin:0;line-height:1.6}.bank-counts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0;padding:20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.bank-counts strong{display:block;font-size:28px;color:var(--teal);line-height:1.2}.bank-counts span{display:block;margin-top:7px;font-size:14px;color:var(--muted)}.adaptive-note{color:var(--muted)}
@media(max-width:480px){.bank-counts{gap:12px}.bank-counts strong{font-size:24px}.bank-counts span{font-size:12px;line-height:1.4}}
@media(max-width:480px){nav button{padding-left:4px;padding-right:4px;font-size:11px}}
@media(max-width:360px){nav button{font-size:10px;padding-left:3px;padding-right:3px}}

.question-diagram{margin:18px 0;max-width:420px}.question-diagram svg{display:block;width:100%;height:auto}.question-diagram figcaption{margin-top:8px}.question-card .select{width:100%;white-space:normal} .training-overview .bank-counts strong{font-variant-numeric:tabular-nums}

/* Review fixes: consistent controls and readable choices at every width. */
.course-bar{margin-bottom:28px}.learner-bar{align-items:flex-end}.learner-bar>.small{margin:0 0 12px}.skill-card{align-items:stretch}.skill-body{display:flex;flex-direction:column}.skill-body>p{flex:1;margin-bottom:0}.skill-body .card-footer{margin-top:20px}
.bank-filters{grid-template-columns:repeat(2,minmax(0,1fr))}.bank-filters>.btn{width:100%;min-height:48px}.select{font-size:16px;min-width:0}.answer-choices{display:grid;gap:10px;width:100%;min-width:0}.answer-choice{display:flex;align-items:flex-start;gap:12px;padding:14px;border:1px solid var(--line);border-radius:9px;cursor:pointer;min-height:48px;line-height:1.5;font-size:15px}.answer-choice input{margin:4px 0 0;width:18px;height:18px;flex:none;accent-color:var(--teal)}.answer-choice span{min-width:0;overflow-wrap:anywhere}.answer-choice:has(input:checked){border-color:var(--teal);background:var(--pale)}.answer-choice:focus-within{outline:2px solid var(--teal);outline-offset:2px}.toast{width:max-content;max-width:calc(100vw - 36px);overflow-wrap:anywhere}.question-options{padding-left:22px;line-height:1.6}.question-options li+li{margin-top:8px}
@media(max-width:720px){.bank-filters{grid-template-columns:1fr}.learner-bar>.small{margin:0}.answer-choice{padding:12px}}