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button.active.green{background:var(--green);color:#fff}.bankScore{color:var(--muted);margin-bottom:18px;font-size:12px;font-weight:900}.bankScore b{color:var(--ink);font-size:14px}.exerciseGrid{grid-template-columns:repeat(2,1fr);gap:14px;display:grid}.exCard{border:1px solid var(--line);background:#fafafa;border-radius:6px;padding:16px}.exCard legend{padding:0 4px;font-size:12px;font-weight:900}.exOptions{flex-direction:column;gap:6px;margin-top:10px;display:flex}.exOptions button{text-align:left;cursor:pointer;background:#fff;border:0;border-radius:4px;padding:9px 11px;font-size:11px;box-shadow:0 2px #11182722}.exOptions button.ok{background:#c9f5dc}.exOptions button.no{background:#ffd0cc}.trackPractice{color:var(--blue);margin-top:16px;font-size:11px;font-weight:1000}.resourceWall{grid-template-columns:repeat(2,1fr);gap:18px;display:grid}.resourceBrick{border-radius:7px;flex-direction:column;min-height:300px;padding:31px;display:flex;position:relative;box-shadow:0 8px #11182736}.resourceBrick.blue{background:var(--blue);color:#fff}.resourceBrick.yellow{background:var(--yellow)}.resourceBrick.red{background:var(--red);color:#fff}.resourceBrick.green{background:var(--green);color:#fff}.resourceStuds{justify-content:space-between;display:flex;position:absolute;top:-7px;left:25px;right:25px}.resourceStuds i{background:#fff5}.resourceBrick>span{text-transform:uppercase;letter-spacing:.15em;font-size:9px;font-weight:900}.resourceBrick h2{margin:30px 0 8px;font-size:28px}.resourceBrick p{opacity:.8;max-width:500px;font-size:12px;line-height:1.65}.resourceBrick>b{margin-top:auto;font-size:11px}.resourceBrick>small{opacity:.12;font-size:48px;font-weight:1000;position:absolute;bottom:20px;right:25px}.safeNote{border:2px solid var(--ink);box-shadow:5px 5px 0 var(--ink);border-radius:6px;grid-template-columns:.3fr 1.7fr;gap:20px;margin-top:35px;padding:25px;display:grid}.safeNote p{color:var(--muted);margin:0;font-size:11px;line-height:1.65}.roundBadge{letter-spacing:.05em;vertical-align:middle;background:#fff;border-radius:4px;margin-left:8px;padding:4px 8px;font-size:9px;font-weight:1000;display:inline-block;box-shadow:0 3px #11182733}.taskTitle{margin:0 0 10px;font-size:13px;font-weight:1000}.levelUpBar{background:#fff;border-radius:6px;justify-content:space-between;align-items:center;gap:12px;margin-top:14px;padding:12px 14px;display:flex;box-shadow:0 4px #11182733}.levelUpBar span{font-size:11px;font-weight:900}.levelUpBar button{background:var(--ink);color:#fff;cursor:pointer;border:0;border-radius:5px;padding:10px 15px;font-size:11px;font-weight:1000;box-shadow:0 4px #000}.feedback.big{text-align:center;padding:16px;font-size:15px;font-weight:1000;display:block}@media (width<=900px){.navToggle{display:flex}.siteHeader nav{border-top:2px solid var(--ink);border-bottom:2px solid var(--ink);opacity:0;pointer-events:none;background:#fff;flex-direction:column;gap:0;max-height:0;padding:6px 24px;transition:max-height .25s,opacity .2s;display:flex;position:absolute;top:100%;left:0;right:0;overflow:hidden;box-shadow:0 10px 20px #11182722}.siteHeader nav.open{opacity:1;pointer-events:auto;max-height:320px}.siteHeader nav a{border-bottom:1px solid var(--line);padding:15px 0;font-size:15px}.siteHeader nav a:last-child{border-bottom:0}.brickHero{grid-template-columns:minmax(0,1fr)}.heroPicture{min-height:500px}.routeStrip{grid-template-columns:repeat(2,minmax(0,1fr));margin:-25px 20px 0}.wowIntro{grid-template-columns:minmax(0,1fr);padding:90px 24px}.levelBlocks{grid-template-columns:repeat(2,minmax(0,1fr))}.labBanner{grid-template-columns:minmax(0,1fr)}.labBanner>div{padding:55px 24px}.contentWrap{padding:70px 24px}.pageHero{grid-template-columns:minmax(0,1fr)}.pageHero img,.brickStack{margin-top:30px}.propertyBricks{grid-template-columns:repeat(2,minmax(0,1fr))}.threeStructures,.buildSteps{grid-template-columns:minmax(0,1fr)}.track{grid-template-columns:120px minmax(0,1fr)}.track aside{border-top:1px solid #11182720;border-left:0;grid-column:1/-1;padding:20px 0 0}.quizRows{grid-template-columns:minmax(0,1fr)}}@media (width<=620px){.siteHeader{height:69px}.navCta{display:none}.navToggle{width:40px;height:40px;font-size:17px}.brickHero{min-height:auto}.heroWords{padding:55px 20px}.heroWords h1{font-size:51px}.heroButtons{flex-direction:column;align-items:flex-start}.heroPicture{min-height:360px}.routeStrip,.levelBlocks{grid-template-columns:minmax(0,1fr)}.levelBlocks a{min-height:300px}.labBanner img{height:360px}.siteFooter{flex-direction:column;align-items:flex-start;min-height:190px;padding:28px 20px}.pageHero{padding:50px 20px}.pageHero h1{font-size:44px}.definitionBrick,.propertyBricks,.track{grid-template-columns:minmax(0,1fr)}.gradeBrick{width:90px;height:90px}.labGrid{grid-template-columns:minmax(0,1fr);padding:40px 12px}.trainerCard.wide{grid-column:auto}.stepBuilder,.resourceWall,.safeNote{grid-template-columns:minmax(0,1fr)}.miniStats{gap:12px}.heroWords>p{font-size:15px}.exerciseGrid{grid-template-columns:minmax(0,1fr)}.levelTabs{gap:8px}.levelTabs button{padding:9px 12px;font-size:11px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.levelBlocks a,.resourceBrick{transition:none}}@media (width<=900px){.brickHero{grid-template-columns:minmax(0,1fr)}.heroWords,.heroPicture{min-width:0}}@media (width<=620px){.heroWords h1{overflow-wrap:anywhere;font-size:clamp(34px,11.5vw,51px)}.pageHero h1{overflow-wrap:anywhere;font-size:clamp(32px,11vw,44px)}}@property --tw-rotate-x{syntax:"*";inherits:false}@property --tw-rotate-y{syntax:"*";inherits:false}@property --tw-rotate-z{syntax:"*";inherits:false}@property --tw-skew-x{syntax:"*";inherits:false}@property --tw-skew-y{syntax:"*";inherits:false}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}


/* Touch-цілі (аудит доступності на дотик, 2026-09): мінімум 44px по висоті на пристроях з пальцем. */
@media (pointer: coarse) {
  .heroButtons a, .siteFooter a { display: flex; align-items: center; justify-content: center; min-height: 44px; }
  .introCopy a { display: inline-flex; align-items: center; min-height: 44px; }
}


/* Touch-цілі (продовження): додаткові елементи. */
@media (pointer: coarse) {
  .trackPractice { display: flex; align-items: center; min-height: 44px; }
  .stepBuilder button { min-width: 44px; min-height: 44px; }
  .trainerCard .reset { min-height: 44px; }
  .levelTabs button, .exOptions button { min-height: 44px; }
}


/* 320px: заголовки 40px (6 ВЛАСТИВОСТЕЙ, ЯК СТВОРИТИ АЛГОРИТМ) виходили за контейнер на 40px. */
@media (max-width: 380px) {
  main .contentWrap h2, main .sectionHead h2 { font-size: 31px; overflow-wrap: anywhere; }
}

/* Контраст тексту (аудит 2026-09): дрібний світлий текст на світлому фоні мав <4.5:1. */
.brickButton.yellow { color: #1b1b1f; }


/* Світла тема сайту: явно кажемо браузеру color-scheme: light — інакше режими примусового затемнення (Samsung Internet, Chrome Force Dark) інвертують кольори. */
:root { color-scheme: light; }