:root{--ink:#17231d;--cream:#f4efe5;--paper:#fffdf8;--green:#285c45;--lime:#dbe867;--muted:#6c756f;--line:#d9d4c9;--orange:#e78752}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}.app{max-width:1180px;margin:auto;padding:0 28px 56px}.topbar{height:88px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font:800 21px Georgia,serif}.brand span{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--green);color:#fff;font:700 18px Georgia}.streak{display:flex;align-items:center;gap:6px;padding:9px 14px;background:#fff8ea;border:1px solid #ead7b7;border-radius:999px;font-size:13px}.hero{display:grid;grid-template-columns:1.25fr .75fr;align-items:end;gap:80px;padding:62px 0 42px}.eyebrow{font-weight:800;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--green)}h1{font:500 clamp(45px,7vw,76px)/.95 Georgia,serif;letter-spacing:-.045em;margin:14px 0 22px}h1 em{color:var(--green);font-weight:400}.intro{max-width:520px;color:var(--muted);line-height:1.65;margin:0}.progress-card{background:rgba(255,255,255,.48);border:1px solid var(--line);padding:22px 24px;border-radius:16px}.progress-head{display:flex;justify-content:space-between;font-size:13px}.progress-track{height:8px;background:#dedbd2;border-radius:10px;margin:14px 0 11px;overflow:hidden}.progress-track div{height:100%;width:0;background:var(--green);border-radius:10px;transition:width .4s}.progress-card p{margin:0;color:var(--muted);font-size:12px}.filters{display:flex;gap:8px;flex-wrap:wrap;padding:18px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.filter{border:1px solid transparent;background:transparent;border-radius:999px;padding:10px 16px;color:var(--muted);cursor:pointer;font:600 13px inherit}.filter:hover{background:#eae5db}.filter.active{background:var(--ink);color:white}.study{padding:40px 0 0}.counter{text-align:center;font:700 12px monospace;letter-spacing:.1em;color:var(--muted);margin-bottom:15px}.counter span:first-child{color:var(--green)}.card-wrap{perspective:1200px;max-width:680px;height:390px;margin:auto}.flashcard{position:relative;width:100%;height:100%;transform-style:preserve-3d;transition:transform .55s cubic-bezier(.2,.8,.2,1);cursor:pointer;outline:none}.flashcard.flipped{transform:rotateY(180deg)}.flashcard:focus-visible .card-face{box-shadow:0 0 0 4px #9cbdab}.card-face{position:absolute;inset:0;backface-visibility:hidden;background:var(--paper);border:1px solid #d7d1c5;border-radius:24px;padding:30px 34px;box-shadow:0 18px 50px rgba(55,50,40,.08);display:flex;flex-direction:column;justify-content:space-between}.back{transform:rotateY(180deg);background:var(--green);color:#fff;border-color:var(--green)}.card-meta{display:flex;align-items:center;justify-content:space-between;font-size:11px;letter-spacing:.16em;font-weight:800;color:var(--muted)}.back .card-meta{color:#b8d1c4}.icon-btn{border:1px solid var(--line);background:transparent;width:38px;height:38px;border-radius:50%;cursor:pointer}.back .icon-btn{border-color:#70917f}.word-block{text-align:center}.word-block h2,.translation-block h2{font:500 clamp(55px,9vw,86px)/1 Georgia,serif;letter-spacing:-.04em;margin:0}.word-block p{color:var(--muted);margin:13px 0 0;font-family:Georgia,serif;font-style:italic;font-size:19px}.hint{margin:0;text-align:center;color:#8b918d;font-size:12px}.hint span{margin-left:7px}.back .hint{color:#b8d1c4}.translation-block{text-align:center}.translation-block h2{font-size:clamp(42px,7vw,62px)}.example{margin:28px auto 0;padding-top:22px;border-top:1px solid #62806f;max-width:500px}.example span{font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:#b8d1c4}.example p{font:italic 18px Georgia,serif;margin:8px 0}.example small{color:#cbdcd3}.actions{max-width:680px;margin:20px auto 0;display:grid;grid-template-columns:1fr 1fr;gap:12px}.action{height:68px;border-radius:14px;display:flex;align-items:center;justify-content:center;gap:14px;cursor:pointer;text-align:left}.action>span:first-child{font-size:22px}.action b,.action small{display:block}.action b{font-size:14px}.action small{font-size:11px;margin-top:2px;opacity:.68}.repeat{background:transparent;border:1px solid #cfc9bd;color:var(--ink)}.know{background:var(--lime);border:1px solid #cbd958;color:var(--ink)}.action:hover{transform:translateY(-1px);filter:brightness(.98)}.keyboard{text-align:center;color:#999c98;font-size:10px;margin-top:18px}.summary{max-width:680px;margin:50px auto;text-align:center;background:var(--paper);border:1px solid var(--line);border-radius:24px;padding:60px}.summary-icon{display:grid;place-items:center;margin:0 auto 22px;width:60px;height:60px;background:var(--lime);border-radius:50%;font-size:30px}.summary h2{font:500 42px Georgia,serif;margin:10px}.summary p{color:var(--muted)}.summary button{margin-top:18px;padding:14px 25px;border:0;border-radius:999px;background:var(--green);color:white;font-weight:700;cursor:pointer}@media(max-width:720px){.app{padding:0 16px 36px}.topbar{height:70px}.hero{grid-template-columns:1fr;gap:28px;padding:38px 0 30px}.intro{font-size:14px}.filters{flex-wrap:nowrap;overflow-x:auto}.filter{white-space:nowrap}.study{padding-top:28px}.card-wrap{height:380px}.card-face{padding:24px}.actions{grid-template-columns:1fr 1fr}.keyboard{display:none}}@media(max-width:430px){.card-wrap{height:360px}.word-block h2{font-size:58px}.translation-block h2{font-size:44px}.action{height:62px}.action small{display:none}}
/* Раздел с лексикой для взрослых заметно отличается от обычных тем. */
.filter.adult-filter{border-color:#a86b6b;color:#7d2f2f}
.filter.adult-filter.locked{border-style:dashed}
.filter.adult-filter.active{background:#7d2f2f;color:#fff;border-color:#7d2f2f}
.answer-stats{display:flex;gap:14px;flex-wrap:wrap;margin-top:9px;font-size:12px}.answer-correct{color:#287249}.answer-wrong{color:#a54d43}.answer-stats b{font-size:14px}

/* Краткая инструкция для первого посещения. */
body.onboarding-open{overflow:hidden}.onboarding-modal[hidden]{display:none}.onboarding-modal{position:fixed;inset:0;z-index:10000;display:grid;place-items:center;padding:20px;background:rgba(18,29,23,.72);backdrop-filter:blur(5px)}.onboarding-panel{width:min(720px,100%);max-height:calc(100vh - 40px);overflow:auto;background:var(--paper);border:1px solid rgba(255,255,255,.5);border-radius:28px;padding:30px;box-shadow:0 28px 90px rgba(10,24,17,.35)}.onboarding-mark{display:grid;place-items:center;width:46px;height:46px;margin:0 auto 12px;border-radius:50%;background:var(--green);color:#fff;font:700 24px Georgia,serif}.onboarding-panel h2{text-align:center;margin:0;font:500 clamp(28px,5vw,42px)/1.1 Georgia,serif}.onboarding-lead{max-width:590px;margin:12px auto 22px;text-align:center;color:var(--muted);line-height:1.5}.onboarding-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.onboarding-grid article{display:flex;gap:12px;padding:14px;background:#f5f1e8;border:1px solid #e4ded2;border-radius:16px}.onboarding-grid article:last-child{grid-column:1/-1}.onboarding-grid article>span{display:grid;place-items:center;flex:0 0 38px;width:38px;height:38px;border-radius:12px;background:#fff;font-size:20px}.onboarding-grid b{display:block;font-size:14px;margin:1px 0 4px}.onboarding-grid p{margin:0;color:var(--muted);font-size:12px;line-height:1.45}.onboarding-free{text-align:center;margin:18px 0 14px;color:var(--green);font-size:13px;font-weight:700}.onboarding-start{display:block;width:min(310px,100%);margin:auto;padding:14px 22px;border:0;border-radius:999px;background:var(--green);color:#fff;font:700 15px inherit;cursor:pointer;box-shadow:0 8px 22px rgba(40,92,69,.22)}.onboarding-start:hover{filter:brightness(1.08)}.onboarding-start:focus-visible{outline:3px solid var(--lime);outline-offset:3px}@media(max-width:620px){.onboarding-modal{padding:10px}.onboarding-panel{max-height:calc(100vh - 20px);padding:22px 16px;border-radius:22px}.onboarding-lead{font-size:13px;margin-bottom:15px}.onboarding-grid{grid-template-columns:1fr;gap:8px}.onboarding-grid article:last-child{grid-column:auto}.onboarding-grid article{padding:11px}.onboarding-grid p{font-size:11px}.onboarding-free{margin:14px 0 12px;font-size:12px}}