/* Shared free-learning and editorial-resource surfaces. */
.lab-nav { gap: 1rem; }
.lab-nav-links { display: flex; gap: 1.3rem; align-items: center; }
.lab-nav-links a { color: var(--text-mid); text-decoration: none; font-size: .9rem; }
.lab-nav-links a[aria-current="page"] { color: var(--teal); font-weight: 600; }
.lab-shell { position: relative; max-width: 1180px; margin: 0 auto; padding: 116px 28px 64px; }
.lab-eyebrow { color: var(--teal); text-transform: uppercase; letter-spacing: .12em; font-size: .73rem; font-weight: 600; margin-bottom: .8rem; }
.lab-hero { display: grid; grid-template-columns: 1.5fr 1fr; align-items: center; gap: 64px; padding-bottom: 48px; }
.lab-hero h1 { font-family: 'Fraunces',serif; font-size: clamp(2.7rem,5.5vw,4.7rem); font-weight: 600; line-height: 1.07; letter-spacing: -.045em; max-width: 760px; }
.lab-hero h1 em { color: var(--teal); font-weight: 400; }
.lab-lede { color: var(--text-mid); font-size: 1.12rem; line-height: 1.7; max-width: 660px; margin: 24px 0; }
.lab-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 20px; margin: 24px 0; }
.lab-button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: 12px 22px; background: var(--teal); color: #fff; border: 1px solid var(--teal); border-radius: 8px; font: 600 .95rem 'Outfit',sans-serif; text-decoration: none; cursor: pointer; }
.lab-button:hover { background: #12655c; color: #fff; }
.lab-button.secondary { background: transparent; color: var(--teal); }
.lab-text-link, .resource-all { color: var(--teal); text-underline-offset: 4px; display: inline-block; padding: 10px 0; }
.lab-button:focus-visible, .lab-shell a:focus-visible, .lab-shell button:focus-visible, .lab-shell input:focus-visible, .lab-shell select:focus-visible { outline: 3px solid #d97706; outline-offset: 4px; }
.lab-note { font-size: .9rem; color: var(--text-mid); line-height: 1.6; }
.lab-progress-card { padding: 30px; border: 1px solid var(--border); background: var(--off-white); border-radius: 18px; transform: rotate(1deg); }
.lab-progress-card h2 { font: 600 1.5rem 'Fraunces',serif; margin-bottom: 20px; }
.lab-progress-item { display: flex; justify-content: space-between; gap: 16px; border-top: 1px solid var(--border); padding: 15px 0; color: var(--text-mid); }
.lab-progress-item strong { color: var(--navy); font-size: 1.2rem; }
.lab-section { margin: 32px 0 48px; scroll-margin-top: 85px; }
.lab-section-title { font: 600 2rem 'Fraunces',serif; letter-spacing: -.025em; margin-bottom: 10px; }
.topic-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin: 24px 0; }
.topic-card { display: block; padding: 24px; border: 1px solid var(--border); background: var(--surface); border-radius: 12px; text-decoration: none; color: var(--text); transition: border-color .15s, transform .15s; }
.topic-card:hover { border-color: var(--teal); transform: translateY(-2px); }
.topic-card[aria-current="true"] { border-color: var(--teal); background: #edf5f2; box-shadow: inset 3px 0 var(--teal); }
.topic-card .topic-number { font: .75rem 'JetBrains Mono',monospace; color: var(--teal); }
.topic-card h3 { font: 600 1.24rem 'Fraunces',serif; margin: 12px 0; }
.topic-card p { color: var(--text-mid); line-height: 1.6; font-size: .95rem; }
.topic-card small { display: block; color: var(--teal); margin-top: 18px; font-size: .8rem; }
.lesson-layout { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(0,1fr); gap: 26px; align-items: start; }
.lesson-panel { scroll-margin-top: 90px; }
.lesson-panel h2 { font: 600 2rem 'Fraunces',serif; margin-bottom: 16px; letter-spacing: -.02em; }
.lesson-panel h3 { font: 600 1.3rem 'Fraunces',serif; margin: 26px 0 14px; }
.lesson-panel p, .lesson-panel li { color: var(--text-mid); line-height: 1.8; }
.lesson-points { padding-left: 22px; }
.lesson-points li { margin-bottom: 14px; padding-left: 5px; }
.worked-example { padding: 24px; background: #edf5f2; border: 1px solid #c8ded6; border-radius: 12px; margin: 24px 0; }
.worked-example h3 { margin-top: 0; }
.worked-example ol { padding-left: 20px; margin-top: 14px; }
.practice-panel { padding: 28px; border: 1px solid var(--border-dark); border-radius: 14px; background: var(--surface); position: sticky; top: 84px; }
.practice-panel h2 { font: 600 1.8rem 'Fraunces',serif; margin-bottom: 16px; }
.practice-panel p { line-height: 1.65; color: var(--text-mid); }
.practice-form fieldset { border: 0; min-width: 0; }
.practice-question { font: 600 1.3rem/1.45 'Fraunces',serif; margin-bottom: 20px; }
.practice-option { display: flex; align-items: start; gap: 12px; border: 1px solid var(--border); padding: 14px; margin: 10px 0; border-radius: 8px; cursor: pointer; line-height: 1.5; min-height: 48px; }
.practice-option input { margin-top: 5px; accent-color: var(--teal); flex-shrink: 0; }
.practice-option:has(input:checked) { border-color: var(--teal); background: #f0f7f4; }
.practice-option.answer-correct { border-color: var(--teal); background: #edf5f2; }
.practice-option.answer-incorrect { border-color: #a84634; background: #fcf1ee; }
.practice-feedback:not(:empty) { margin-top: 20px; padding: 16px 0 0; border-top: 1px solid var(--border); }
.practice-feedback strong { color: var(--navy); }
.practice-review { border-bottom: 1px solid var(--border); padding: 16px 0; }
.practice-review summary { cursor: pointer; line-height: 1.5; }
.practice-review p { margin: 12px 0; }
.form-error:not(:empty) { color: #9d3525; margin: 10px 0; }
.day-plan { margin: 26px 0; scroll-margin-top: 84px; }
.day-plan label { display: flex; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--border); line-height: 1.65; color: var(--text-mid); }
.day-plan input { accent-color: var(--teal); margin-top: 6px; width: 17px; height: 17px; flex-shrink: 0; }
.day-plan strong { color: var(--navy); }
.calculator-card { padding: 30px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface); margin: 40px 0; }
.calculator-card h2 { font: 600 1.6rem 'Fraunces',serif; margin-bottom: 12px; }
.calculator-fields { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 16px; margin: 22px 0; }
.calculator-fields label, .resource-controls label { display: grid; gap: 8px; color: var(--text-mid); font-size: .9rem; }
.calculator-fields input, .resource-controls input, .resource-controls select { width: 100%; min-height: 46px; font: 1rem 'Outfit',sans-serif; padding: 10px 12px; border: 1px solid var(--border-dark); border-radius: 7px; color: var(--navy); background: #fff; }
.calculator-result { margin-top: 20px; line-height: 1.8; color: var(--navy); }
.resource-module { margin: 36px 0; padding-top: 24px; border-top: 1px solid var(--border); }
.resource-module h2 { font: 600 1.8rem 'Fraunces',serif; margin-bottom: 14px; }
.resource-module > p { line-height: 1.7; color: var(--text-mid); margin: 12px 0 18px; }
.resource-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; margin: 24px 0; }
.resource-card { display: flex; flex-direction: column; padding: 26px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; min-width: 0; }
.resource-card h3 { font: 600 1.35rem/1.35 'Fraunces',serif; margin: 10px 0; overflow-wrap: anywhere; }
.resource-format { font: .7rem 'JetBrains Mono',monospace; text-transform: uppercase; letter-spacing: .06em; color: var(--teal); }
.resource-creator { font-size: .85rem; color: var(--text-mid); margin-bottom: 18px; line-height: 1.5; }
.resource-why { line-height: 1.7; color: var(--text); margin-bottom: 14px; }
.resource-consider { font-size: .83rem; color: var(--text-mid); line-height: 1.65; margin-bottom: 22px; }
.resource-link { color: var(--teal); margin-top: auto; line-height: 1.6; text-underline-offset: 4px; padding: 10px 0; }
.paid-label { font-size: .8rem; }
.resource-disclosure { padding: 16px 20px; background: var(--surface2); border-radius: 8px; color: var(--text-mid); line-height: 1.7; font-size: .9rem; }
.resource-controls { display: flex; flex-wrap: wrap; align-items: end; gap: 18px; margin: 28px 0 18px; }
.resource-controls label:first-child { flex: 2 1 260px; }
.resource-controls label { flex: 1 1 170px; }
.resource-count { color: var(--text-mid); margin: 20px 0; font-size: .9rem; }
.lab-callout { border: 1px solid var(--border); border-radius: 12px; padding: 24px; margin: 28px 0; background: var(--off-white); }
.lab-callout h2 { font: 600 1.4rem 'Fraunces',serif; margin-bottom: 12px; }
.lab-callout p { line-height: 1.7; color: var(--text-mid); }
.lab-method { max-width: 760px; }
.lab-method h1 { font: 600 3rem 'Fraunces',serif; margin-bottom: 24px; }
.lab-method h2 { font: 600 1.6rem 'Fraunces',serif; margin: 32px 0 16px; }
.lab-method p, .lab-method li { line-height: 1.9; color: var(--text-mid); margin-bottom: 16px; }
.lab-method ul { padding-left: 24px; }
.home-learning { margin: 32px 0; padding: 32px; border: 1px solid var(--border); border-radius: 14px; background: #edf5f2; }
.home-learning h2 { font: 600 1.9rem 'Fraunces',serif; margin-bottom: 14px; }
.home-learning p { line-height: 1.75; color: var(--text-mid); max-width: 680px; }
.learning-nav-link { color: var(--teal); text-decoration: none; font-size: .85rem; font-weight: 600; }
[hidden] { display: none !important; }
@media (max-width: 900px) { .lab-hero { gap: 28px; } .topic-grid, .resource-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .lesson-layout { grid-template-columns: minmax(0,1fr); } .practice-panel { position: static; } .calculator-fields { grid-template-columns: repeat(2,minmax(0,1fr)); } }
@media (max-width: 600px) { .lab-shell { padding: 94px 18px 40px; } .lab-nav { padding: 0 16px; } .lab-nav .nav-logo { font-size: 1rem; } .lab-nav-links { gap: 12px; } .lab-nav-links a { font-size: .8rem; } .lab-hero { grid-template-columns: minmax(0,1fr); gap: 20px; padding-bottom: 20px; } .lab-progress-card { transform: none; padding: 22px; } .lab-hero h1 { font-size: 2.9rem; } .topic-grid, .resource-grid { grid-template-columns: minmax(0,1fr); } .topic-card, .resource-card { padding: 22px; } .practice-panel, .calculator-card { padding: 22px; } .calculator-fields { grid-template-columns: minmax(0,1fr); } .home-learning { padding: 22px; } nav .learning-nav-link { font-size: .75rem; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .topic-card { transition: none; } .topic-card:hover { transform: none; } }

/* The same layout supports long translated labels and right-to-left reading. */
.lab-language { display: flex; gap: .5rem; align-items: center; font-size: .8rem; }
.lab-language .lang-select { max-width: 11rem; }
.lab-nav { flex-wrap: wrap; gap: 1rem; }
.lab-nav-links { flex-wrap: wrap; }
[dir="rtl"] .lesson-points, [dir="rtl"] .worked-example ol { padding-inline-start: 1.4rem; padding-inline-end: 0; }
[dir="rtl"] .practice-option { text-align: start; }
[dir="rtl"] input[type="number"] { direction: ltr; text-align: start; }
.resource-card h3, .resource-card p, .lesson-panel p, .lesson-panel li { overflow-wrap: anywhere; }
@media (max-width: 600px) { .lab-language { width: 100%; justify-content: space-between; } .lab-language .lang-select { max-width: 70%; } }
.lab-nav { position: relative; height: auto; min-height: 60px; padding-block: 12px; }
.lab-nav + .lab-shell { padding-top: 48px; }
@media (max-width: 600px) { .lab-nav + .lab-shell { padding-top: 32px; } }
/* Off-screen left positioning creates a huge scroll area in RTL browsers. */
a.skip-link { left: 0; inset-inline-start: 0; width: 1px; height: 1px; clip-path: inset(50%); overflow: hidden; }
a.skip-link:focus { left: auto; inset-inline-start: 0; top: 0; width: auto; height: auto; clip-path: none; overflow: visible; }

/* Homepage: the learning site has clear destinations, beyond the assessment. */
.home-site-nav { position: relative; height: auto; min-height: 76px; gap: 24px; padding-block: 14px; }
.home-primary-links { display: flex; align-items: center; justify-content: center; gap: 6px; flex-wrap: wrap; }
.home-primary-links a { display: block; padding: 10px 12px; border-radius: 8px; color: var(--navy); font-size: .94rem; font-weight: 600; text-decoration: none; }
.home-primary-links a:hover, .home-primary-links a:focus-visible { background: #e0eeea; color: var(--teal); }
.home-language { flex-shrink: 0; }
.home-site-nav ~ main #home { padding-top: 42px; }
.home-hero-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.home-practice-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 20px; border: 1px solid var(--teal); border-radius: 8px; text-decoration: none; color: var(--teal); font-weight: 600; }
.home-practice-cta:hover { background: #e0eeea; }
.home-destinations { margin: 0 0 56px; padding-block: 28px 12px; }
.home-destinations-heading { margin-bottom: 24px; }
.home-destinations-heading h2 { font: 600 clamp(1.9rem,4vw,2.6rem) 'Fraunces',serif; margin-bottom: 10px; color: var(--navy); }
.home-destinations-heading > p:last-child { color: var(--text-mid); line-height: 1.7; }
.home-destination-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 18px; }
.home-destination { display: flex; flex-direction: column; align-items: flex-start; padding: 28px; border: 1px solid var(--border); border-radius: 14px; background: #fff; text-decoration: none; color: var(--navy); transition: border-color .15s, background .15s; }
.home-destination:first-child { background: #e8f2ee; border-color: #a7cfc4; }
.home-destination:hover, .home-destination:focus-visible { border-color: var(--teal); background: #eff6f3; }
.home-destination-number { font: 500 .8rem 'JetBrains Mono',monospace; color: var(--teal); margin-bottom: 18px; }
.home-destination h3 { font: 600 1.6rem 'Fraunces',serif; margin: 0 0 12px; }
.home-destination p { font-size: .96rem; line-height: 1.75; color: var(--text-mid); margin: 0 0 22px; }
.home-destination-action { margin-top: auto; font-weight: 600; color: var(--teal); line-height: 1.6; }
.home-destination-action span { margin-inline-start: 6px; }
@media (max-width: 1100px) {
  .home-site-nav { display: grid; grid-template-columns: minmax(0,1fr) auto; gap: 12px; }
  .home-site-nav .nav-logo { grid-row: 1; grid-column: 1; }
  .home-site-nav .home-language { grid-row: 1; grid-column: 2; }
  .home-primary-links { grid-row: 2; grid-column: 1 / -1; justify-content: flex-start; gap: 4px; }
}
@media (max-width: 600px) {
  .home-site-nav { padding: 12px 16px; }
  .home-primary-links a { padding: 9px 10px; font-size: .88rem; }
  .home-site-nav ~ main #home { padding-top: 28px; }
  .home-destination-grid { grid-template-columns: minmax(0,1fr); }
  .home-destination { padding: 24px; }
  .home-destinations { margin-bottom: 32px; }
  .home-hero-actions > a { width: 100%; text-align: center; }
}
@media (prefers-reduced-motion: reduce) { .home-destination { transition: none; } }

/* Keep the expanded homepage footer usable on narrow and translated pages. */
.home-site-nav ~ .site-footer .footer-links { flex-wrap: wrap; }