.sqbsa-shell{
  --sqbsa-border:#d9dee7;
  --sqbsa-text:#152033;
  --sqbsa-muted:#687386;
  --sqbsa-soft:#f6f8fb;
  --sqbsa-accent:#1f5f9f;
  --sqbsa-accent-soft:#edf5fc;
  --sqbsa-good:#176a3a;
  --sqbsa-bad:#a13232;
  max-width:1120px;
  margin:0 auto;
  padding:26px 18px 64px;
  color:var(--sqbsa-text);
  font-family:inherit;
}
.sqbsa-shell *{box-sizing:border-box}
.sqbsa-shell a{transition:background-color .15s ease,border-color .15s ease,color .15s ease,transform .15s ease}
.sqbsa-top{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:0 0 18px;border-bottom:1px solid var(--sqbsa-border);margin-bottom:26px}
.sqbsa-brand{font-size:1.4rem;font-weight:850;text-decoration:none;color:var(--sqbsa-text)}
.sqbsa-top nav{display:flex;align-items:center;gap:16px;font-size:.92rem}
.sqbsa-top nav form{margin:0}
.sqbsa-top nav a,.sqbsa-linkbutton{color:var(--sqbsa-accent);background:none;border:0;padding:4px 0;text-decoration:none;cursor:pointer;font:inherit;font-weight:650}
.sqbsa-top nav a.is-active{color:var(--sqbsa-text);box-shadow:inset 0 -2px 0 var(--sqbsa-accent)}
.sqbsa-account-email{color:var(--sqbsa-muted);font-size:.82rem}
.sqbsa-narrow{max-width:820px;margin:0 auto}
.sqbsa-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(420px,1fr);gap:30px;align-items:end;margin:30px 0}
.sqbsa-hero h1,.sqbsa-card h1,.sqbsa-question h1{font-size:clamp(2rem,4vw,3.4rem);line-height:1.06;margin:.2em 0}
.sqbsa-hero p,.sqbsa-lead{font-size:1.05rem;color:var(--sqbsa-muted);max-width:690px;line-height:1.65}
.sqbsa-eyebrow{font-size:.75rem!important;text-transform:uppercase;letter-spacing:.12em;font-weight:850;color:var(--sqbsa-accent)!important;margin:0}
.sqbsa-metrics{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--sqbsa-border);border-radius:16px;overflow:hidden;background:#fff}
.sqbsa-metrics-four{grid-template-columns:repeat(4,1fr)}
.sqbsa-metrics article{padding:19px 14px;border-right:1px solid var(--sqbsa-border)}
.sqbsa-metrics article:last-child{border-right:0}
.sqbsa-metrics strong{display:block;font-size:1.55rem;line-height:1.1}
.sqbsa-metrics span{display:block;margin-top:5px;font-size:.78rem;color:var(--sqbsa-muted);line-height:1.25}
.sqbsa-card,.sqbsa-question{background:#fff;border:1px solid var(--sqbsa-border);border-radius:18px;padding:26px;margin:22px 0;box-shadow:0 8px 26px rgba(21,32,51,.045)}
.sqbsa-section-head{display:flex;align-items:end;justify-content:space-between;gap:20px;border-bottom:1px solid var(--sqbsa-border);padding-bottom:16px;margin-bottom:22px}
.sqbsa-section-head h2{margin:.25em 0 0;font-size:1.45rem}
.sqbsa-section-head>span,.sqbsa-section-head>a{color:var(--sqbsa-muted);font-size:.9rem}
.sqbsa-section-head>a{color:var(--sqbsa-accent);text-decoration:none;font-weight:700}
.sqbsa-primary,.sqbsa-auth-form button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:11px 18px;border:0;border-radius:10px;background:var(--sqbsa-accent);color:#fff!important;font-weight:800;text-decoration:none;cursor:pointer}
.sqbsa-primary:hover,.sqbsa-auth-form button:hover{filter:brightness(.96)}
.sqbsa-primary-large{width:100%;min-height:52px;font-size:1rem;margin-top:4px}
.sqbsa-secondary{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:1px solid #aeb8c6;border-radius:10px;background:#fff;color:var(--sqbsa-text)!important;font-weight:750;text-decoration:none;cursor:pointer}
.sqbsa-secondary:hover{border-color:#7f91a7;background:var(--sqbsa-soft)}
.sqbsa-small-action{min-height:38px;padding:7px 12px;font-size:.85rem}
.sqbsa-back{display:inline-block;margin:0 0 18px;color:var(--sqbsa-accent);text-decoration:none;font-weight:700}
.sqbsa-small{font-size:.86rem;color:var(--sqbsa-muted);line-height:1.55}
.sqbsa-notice{border:1px solid #a9c8e7;background:#f0f7ff;border-radius:10px;padding:12px 14px;margin:15px 0}
.sqbsa-notice.is-error{border-color:#e0adad;background:#fff5f5}
.sqbsa-empty{color:var(--sqbsa-muted)}

/* Dashboard */
.sqbsa-continue{display:flex;align-items:center;justify-content:space-between;gap:28px;border:1px solid #afcbe5;background:var(--sqbsa-accent-soft);border-radius:16px;padding:20px 22px;margin:22px 0}
.sqbsa-continue h2{margin:.15em 0 .2em;font-size:1.45rem}
.sqbsa-continue p{margin:0;color:var(--sqbsa-muted)}
.sqbsa-continue>div{flex:1}
.sqbsa-mini-progress{height:6px;background:#d8e6f3;border-radius:999px;overflow:hidden;max-width:500px;margin-top:12px}
.sqbsa-mini-progress span{display:block;height:100%;background:var(--sqbsa-accent)}
.sqbsa-focus-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}
.sqbsa-focus-card{position:relative;display:flex;flex-direction:column;justify-content:space-between;min-height:190px;padding:20px;border:1px solid var(--sqbsa-border);border-radius:14px;color:var(--sqbsa-text)!important;text-decoration:none;background:#fff}
.sqbsa-focus-card:hover{border-color:#9db0c4;background:var(--sqbsa-soft);transform:translateY(-1px)}
.sqbsa-focus-card.is-disabled{opacity:.62;background:var(--sqbsa-soft)}
.sqbsa-focus-card h3{font-size:1.2rem;margin:0 0 8px}
.sqbsa-focus-card p{margin:0;color:var(--sqbsa-muted);line-height:1.5}
.sqbsa-focus-card>strong{margin-top:24px;color:var(--sqbsa-accent);font-size:.9rem}
.sqbsa-focus-card>strong span{font-size:1.1rem}
.sqbsa-card-badge{position:absolute;top:14px;right:14px;border-radius:999px;background:#eef3f8;color:#4d6178;padding:4px 8px;font-size:.68rem;text-transform:uppercase;letter-spacing:.06em;font-weight:800}
.sqbsa-focus-card>div{padding-right:55px}
.sqbsa-topic-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.sqbsa-topic-grid-categories{grid-template-columns:repeat(3,minmax(0,1fr))}
.sqbsa-topic-card{display:block;border:1px solid var(--sqbsa-border);border-radius:12px;padding:14px;color:var(--sqbsa-text)!important;text-decoration:none;background:#fff}
.sqbsa-topic-card:hover{border-color:#9db0c4;background:var(--sqbsa-soft)}
.sqbsa-topic-card>div:first-child{display:grid;gap:3px;min-height:46px}
.sqbsa-topic-card strong{font-size:.95rem;line-height:1.3}
.sqbsa-topic-card span,.sqbsa-topic-card small{font-size:.76rem;color:var(--sqbsa-muted)}
.sqbsa-topic-progress{height:5px;background:#e6ebf1;border-radius:999px;overflow:hidden;margin:10px 0 7px}
.sqbsa-topic-progress span{display:block;height:100%;background:var(--sqbsa-accent)}
.sqbsa-history{display:grid;gap:1px;background:var(--sqbsa-border);border:1px solid var(--sqbsa-border);border-radius:12px;overflow:hidden}
.sqbsa-history a{display:flex;justify-content:space-between;gap:20px;background:#fff;padding:15px 17px;color:var(--sqbsa-text)!important;text-decoration:none}
.sqbsa-history a:hover{background:var(--sqbsa-soft)}
.sqbsa-history a>div{display:grid;gap:3px}
.sqbsa-history a>div:last-child{text-align:right}
.sqbsa-history span{font-size:.83rem;color:var(--sqbsa-muted)}

/* Start flow */
.sqbsa-start-card{padding:32px}
.sqbsa-start-card h1{margin-bottom:8px}
.sqbsa-availability{display:flex;align-items:baseline;gap:10px;margin:26px 0;padding:16px 18px;border-radius:12px;background:var(--sqbsa-soft)}
.sqbsa-availability strong{font-size:1.7rem}
.sqbsa-availability span{color:var(--sqbsa-muted)}
.sqbsa-length-form fieldset{border:0;padding:0;margin:0}
.sqbsa-length-form legend{font-weight:800;font-size:1rem;margin-bottom:12px}
.sqbsa-length-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.sqbsa-length-grid label{position:relative}
.sqbsa-length-grid input{position:absolute;opacity:0}
.sqbsa-length-grid span{display:grid;place-items:center;gap:2px;border:1px solid #b9c2cf;border-radius:12px;padding:18px 12px;cursor:pointer;background:#fff}
.sqbsa-length-grid strong{font-size:1.5rem}
.sqbsa-length-grid small{color:var(--sqbsa-muted)}
.sqbsa-length-grid input:checked+span{border-color:var(--sqbsa-accent);background:var(--sqbsa-accent-soft);box-shadow:0 0 0 2px rgba(31,95,159,.1)}
.sqbsa-empty-state{border-top:1px solid var(--sqbsa-border);margin-top:24px;padding-top:24px}

/* Progress */
.sqbsa-progress-list{display:grid;gap:0;border:1px solid var(--sqbsa-border);border-radius:12px;overflow:hidden}
.sqbsa-progress-row{display:grid;grid-template-columns:minmax(150px,1.2fr) minmax(190px,1.4fr) 90px 130px auto;align-items:center;gap:18px;padding:15px 16px;background:#fff;border-bottom:1px solid var(--sqbsa-border)}
.sqbsa-progress-row:last-child{border-bottom:0}
.sqbsa-progress-name{display:grid;gap:3px}
.sqbsa-progress-name span,.sqbsa-progress-stat span{font-size:.78rem;color:var(--sqbsa-muted)}
.sqbsa-progress-coverage>div{height:6px;background:#e6ebf1;border-radius:999px;overflow:hidden}
.sqbsa-progress-coverage>div span{display:block;height:100%;background:var(--sqbsa-accent)}
.sqbsa-progress-coverage small{display:block;margin-top:5px;color:var(--sqbsa-muted);font-size:.74rem}
.sqbsa-progress-stat{display:grid;gap:2px;text-align:right}
.sqbsa-progress-flags{display:flex;flex-wrap:wrap;gap:5px}
.sqbsa-progress-flags span{border-radius:999px;padding:4px 7px;background:#fff2e7;color:#8c4f16;font-size:.7rem;font-weight:750;white-space:nowrap}
.sqbsa-progress-flags .is-muted{background:#f0f2f5;color:var(--sqbsa-muted)}

/* Study session */
.sqbsa-session{max-width:860px;margin:0 auto}
.sqbsa-progress-head{display:flex;justify-content:space-between;font-size:.9rem}
.sqbsa-progress{height:8px;background:#e7ebf1;border-radius:999px;overflow:hidden;margin:8px 0 18px}
.sqbsa-progress span{display:block;height:100%;background:var(--sqbsa-accent)}
.sqbsa-code{font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:var(--sqbsa-muted);font-weight:800}
.sqbsa-question h1{font-size:clamp(1.55rem,3vw,2.35rem);margin-bottom:25px;line-height:1.25}
.sqbsa-choices{border:0;padding:0;margin:0;display:grid;gap:10px}
.sqbsa-choices label,.sqbsa-feedback-choice{display:grid;grid-template-columns:38px 1fr auto;align-items:center;gap:12px;border:1px solid var(--sqbsa-border);border-radius:12px;padding:14px;cursor:pointer}
.sqbsa-choices label:hover{border-color:#8ca4be;background:var(--sqbsa-soft)}
.sqbsa-choices input{position:absolute;opacity:0}
.sqbsa-choices label:has(input:checked){border-color:var(--sqbsa-accent);box-shadow:0 0 0 2px rgba(31,95,159,.12)}
.sqbsa-marker{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#edf1f6;font-weight:800}
.sqbsa-answer-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:22px;color:var(--sqbsa-muted);font-size:.9rem}
.sqbsa-result{display:inline-block;border-radius:999px;padding:7px 12px;font-weight:800}
.sqbsa-result.is-correct{background:#e9f5ed;color:var(--sqbsa-good)}
.sqbsa-result.is-wrong{background:#f9eaea;color:var(--sqbsa-bad)}
.sqbsa-feedback-choices{display:grid;gap:9px}
.sqbsa-feedback-choice{cursor:default}
.sqbsa-feedback-choice.is-correct{border-color:#8bc39e;background:#f1faf4}
.sqbsa-feedback-choice.is-selected-wrong{border-color:#d6a0a0;background:#fff5f5}
.sqbsa-feedback-choice b{font-size:.75rem;text-transform:uppercase;letter-spacing:.04em}
.sqbsa-explanation,.sqbsa-references{margin-top:24px;padding-top:20px;border-top:1px solid var(--sqbsa-border)}
.sqbsa-explanation h2,.sqbsa-references h2{font-size:1rem;margin:0 0 8px}
.sqbsa-explanation p{line-height:1.65}
.sqbsa-reference-list{display:flex;flex-wrap:wrap;gap:8px}
.sqbsa-reference-list>div{display:flex;align-items:center;gap:7px;border:1px solid var(--sqbsa-border);border-radius:9px;padding:8px 10px;background:var(--sqbsa-soft)}
.sqbsa-reference-list span{font-size:.68rem;text-transform:uppercase;letter-spacing:.05em;color:var(--sqbsa-muted);font-weight:800}
.sqbsa-reference-list strong{font-size:.86rem}
.sqbsa-next{text-align:right;margin-top:26px}

/* Session results */
.sqbsa-summary-metrics{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--sqbsa-border);border-radius:14px;overflow:hidden;margin:22px 0}
.sqbsa-summary-metrics article{padding:18px;border-right:1px solid var(--sqbsa-border)}
.sqbsa-summary-metrics article:last-child{border-right:0}
.sqbsa-summary-metrics strong{display:block;font-size:2rem}
.sqbsa-summary-metrics span{font-size:.8rem;color:var(--sqbsa-muted)}
.sqbsa-summary-actions{display:flex;gap:10px;flex-wrap:wrap;margin:0 0 28px}
.sqbsa-summary-actions form{margin:0}
.sqbsa-summary-section{border-top:1px solid var(--sqbsa-border);padding-top:22px;margin-top:22px}
.sqbsa-summary-section h2{font-size:1.1rem;margin:0 0 12px}
.sqbsa-breakdown-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.sqbsa-breakdown-grid article{display:grid;grid-template-columns:1fr auto;gap:4px 10px;border:1px solid var(--sqbsa-border);border-radius:10px;padding:12px}
.sqbsa-breakdown-grid article strong{grid-column:1/3}
.sqbsa-breakdown-grid article span{font-size:.78rem;color:var(--sqbsa-muted)}
.sqbsa-breakdown-grid article b{font-size:.85rem}
.sqbsa-review-list{display:grid;gap:10px;margin-bottom:8px}
.sqbsa-review-list article{border:1px solid var(--sqbsa-border);border-radius:12px;padding:14px}
.sqbsa-review-list article>div{display:flex;align-items:center;gap:10px}
.sqbsa-review-list article>div>span:last-child{margin-left:auto;font-size:.75rem;color:var(--sqbsa-muted)}
.sqbsa-review-list p{margin:8px 0 0;line-height:1.45}
.sqbsa-review-state{display:grid;place-items:center;width:25px;height:25px;border-radius:50%;font-weight:900}
.sqbsa-review-state.is-correct{background:#e9f5ed;color:var(--sqbsa-good)}
.sqbsa-review-state.is-wrong{background:#f9eaea;color:var(--sqbsa-bad)}

/* Login and account */
.sqbsa-auth{max-width:620px;margin:55px auto}
.sqbsa-auth-card{border:1px solid var(--sqbsa-border);border-radius:20px;padding:34px;background:#fff}
.sqbsa-auth-card h1{font-size:2.4rem;margin:.25em 0}
.sqbsa-auth-card>p{color:var(--sqbsa-muted);line-height:1.6}
.sqbsa-auth-form{display:grid;gap:14px;margin:25px 0}
.sqbsa-auth-form label{display:grid;gap:7px;font-weight:700}
.sqbsa-auth-form input{width:100%;min-height:46px;border:1px solid #b9c2cf;border-radius:10px;padding:8px 12px;background:#fff}
.sqbsa-account-summary{display:grid;gap:5px;padding:16px 18px;background:var(--sqbsa-soft);border-radius:12px;margin:22px 0}
.sqbsa-account-summary span,.sqbsa-account-summary small{color:var(--sqbsa-muted);font-size:.78rem}
.sqbsa-account-summary strong{font-size:1.15rem}
.sqbsa-devices{display:grid;gap:10px;margin-top:20px}
.sqbsa-devices article{display:flex;align-items:center;justify-content:space-between;gap:20px;border:1px solid var(--sqbsa-border);border-radius:12px;padding:15px}
.sqbsa-devices article>div{display:grid;gap:4px}
.sqbsa-devices span{font-size:.83rem;color:var(--sqbsa-muted)}
.sqbsa-devices em{font-style:normal;font-size:.7rem;background:#eef3f8;border-radius:999px;padding:3px 7px;margin-left:6px}
.sqbsa-devices button{border:1px solid #c77;background:#fff;color:#922;border-radius:8px;padding:8px 11px;cursor:pointer}
.sqbsa-device-help{margin-top:28px;padding-top:22px;border-top:1px solid var(--sqbsa-border)}
.sqbsa-device-help h2{margin:.25em 0 .4em}

@media(max-width:980px){
  .sqbsa-hero{grid-template-columns:1fr}
  .sqbsa-topic-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
  .sqbsa-topic-grid-categories{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sqbsa-progress-row{grid-template-columns:minmax(150px,1.1fr) minmax(170px,1fr) 80px auto}
  .sqbsa-progress-flags{display:none}
}
@media(max-width:760px){
  .sqbsa-shell{padding:18px 12px 48px}
  .sqbsa-top{align-items:flex-start;margin-bottom:20px}
  .sqbsa-top nav{flex-wrap:wrap;justify-content:flex-end;gap:10px 14px}
  .sqbsa-account-email{display:none}
  .sqbsa-hero{margin:20px 0}
  .sqbsa-metrics-four,.sqbsa-metrics{grid-template-columns:repeat(2,1fr)}
  .sqbsa-metrics article{border-bottom:1px solid var(--sqbsa-border)}
  .sqbsa-metrics article:nth-child(2n){border-right:0}
  .sqbsa-metrics article:nth-last-child(-n+2){border-bottom:0}
  .sqbsa-continue{align-items:stretch;flex-direction:column}
  .sqbsa-focus-grid{grid-template-columns:1fr}
  .sqbsa-focus-card{min-height:160px}
  .sqbsa-topic-grid,.sqbsa-topic-grid-categories{grid-template-columns:repeat(2,minmax(0,1fr))}
  .sqbsa-section-head{align-items:flex-start;flex-direction:column;gap:8px}
  .sqbsa-progress-row{grid-template-columns:1fr auto;gap:10px}
  .sqbsa-progress-name{grid-column:1/2}
  .sqbsa-progress-stat{grid-column:2/3;grid-row:1/2}
  .sqbsa-progress-coverage{grid-column:1/3}
  .sqbsa-progress-row .sqbsa-small-action{grid-column:1/3;width:100%}
  .sqbsa-answer-row{align-items:stretch;flex-direction:column}
  .sqbsa-primary{width:100%}
  .sqbsa-summary-actions{display:grid;grid-template-columns:1fr}
  .sqbsa-summary-actions form,.sqbsa-summary-actions button,.sqbsa-summary-actions a{width:100%}
  .sqbsa-breakdown-grid{grid-template-columns:1fr}
  .sqbsa-devices article{align-items:flex-start;flex-direction:column}
  .sqbsa-devices form,.sqbsa-devices button{width:100%}
}
@media(max-width:480px){
  .sqbsa-topic-grid,.sqbsa-topic-grid-categories{grid-template-columns:1fr}
  .sqbsa-length-grid{grid-template-columns:1fr}
  .sqbsa-length-grid span{grid-template-columns:auto 1fr;justify-items:start}
  .sqbsa-summary-metrics{grid-template-columns:1fr}
  .sqbsa-summary-metrics article{border-right:0;border-bottom:1px solid var(--sqbsa-border)}
  .sqbsa-summary-metrics article:last-child{border-bottom:0}
  .sqbsa-question,.sqbsa-card{padding:20px 17px;border-radius:14px}
  .sqbsa-choices label,.sqbsa-feedback-choice{grid-template-columns:34px 1fr;align-items:start}
  .sqbsa-feedback-choice b{grid-column:2}
}

/* Phase 3 learning modes */
.sqbsa-quick-random{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(280px,1fr) auto;align-items:center;gap:28px}
.sqbsa-quick-random-copy h2{margin:.2em 0 .45em;font-size:1.55rem}
.sqbsa-quick-random-copy p:last-child{margin:0;color:var(--sqbsa-muted);line-height:1.55;max-width:760px}
.sqbsa-cycle-status{display:grid;gap:9px}
.sqbsa-cycle-status>div:first-child{display:grid;gap:3px}
.sqbsa-cycle-status>div:first-child span,.sqbsa-cycle-status small{font-size:.8rem;color:var(--sqbsa-muted)}
.sqbsa-cycle-bar{height:8px;background:#e6ebf1;border-radius:999px;overflow:hidden}
.sqbsa-cycle-bar span{display:block;height:100%;background:var(--sqbsa-accent)}
.sqbsa-quick-random-action{white-space:nowrap}
.sqbsa-smart-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.sqbsa-progress-cycle{padding-top:22px;padding-bottom:22px}
.sqbsa-progress-cycle .sqbsa-cycle-status{max-width:720px}
@media(max-width:980px){
  .sqbsa-quick-random{grid-template-columns:1fr 1fr}
  .sqbsa-quick-random-action{grid-column:1/3;width:100%}
  .sqbsa-smart-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:760px){
  .sqbsa-quick-random{grid-template-columns:1fr;gap:20px}
  .sqbsa-quick-random-action{grid-column:auto}
  .sqbsa-smart-grid{grid-template-columns:1fr}
}