.r4af{--blue:#2357b9;--blue2:#2f5fb9;--blueDark:#214a95;--text:#172033;--muted:#667085;--line:#e5e7eb;--soft:#f4f7ff;--white:#fff;--green:#198754;--red:#c0352b;--shadow:0 12px 35px rgba(35,87,185,.12);font-family:Tahoma,Arial,"Noto Sans Arabic",sans-serif;color:var(--text);width:100%;max-width:920px;margin:0 auto;box-sizing:border-box}.r4af *{box-sizing:border-box}.r4af button{font-family:inherit}.r4af-shell{width:100%}.r4af-hero{display:flex;align-items:center;gap:14px;background:linear-gradient(135deg,#eef4ff,#f9fbff);border:1px solid #dbe7ff;border-radius:26px;padding:22px 18px;margin-bottom:16px;box-shadow:var(--shadow)}.r4af-hero-icon{width:58px;height:58px;border-radius:18px;background:linear-gradient(135deg,#ffb54a,#f07f2f);display:flex;align-items:center;justify-content:center;font-size:29px;flex:0 0 auto;box-shadow:0 8px 20px rgba(240,127,47,.22)}.r4af h2{font-size:22px;line-height:1.45;margin:0 0 4px;font-weight:800}.r4af-hero p,.r4af-card-head p{font-size:14px;color:var(--muted);line-height:1.8;margin:0}.r4af-tabs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;margin:0 0 16px}.r4af-tab{appearance:none;border:1px solid #d9e3f7;background:#fff;border-radius:16px;padding:11px 8px;font-weight:800;color:#41506b;cursor:pointer;min-height:48px;transition:.18s ease}.r4af-tab.is-active{background:var(--blue);border-color:var(--blue);color:#fff;box-shadow:0 7px 16px rgba(35,87,185,.18)}.r4af-panel{display:none}.r4af-panel.is-active{display:block}.r4af-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:17px;margin-bottom:14px;box-shadow:0 8px 28px rgba(16,24,40,.06)}.r4af-card-head{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:14px}.r4af-card h3{margin:0 0 7px;font-size:18px}.r4af-pill,.r4af-score{background:#edf3ff;color:#2357b9;border:1px solid #d7e5ff;border-radius:999px;padding:7px 10px;font-size:12px;font-weight:800;white-space:nowrap}.r4af-vocab-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.r4af-vocab{appearance:none;border:1px solid #e6ebf3;border-radius:18px;padding:13px 10px;background:#fbfcff;min-height:104px;cursor:pointer;text-align:center;transition:.18s ease}.r4af-vocab:hover,.r4af-vocab.is-selected{border-color:#a9c4ff;background:#f4f8ff;transform:translateY(-1px)}.r4af-vocab-emoji{font-size:27px;display:block;margin-bottom:5px}.r4af-vocab .ru{display:block;direction:ltr;unicode-bidi:isolate;font-family:Arial,"Noto Sans",sans-serif;font-weight:800;font-size:18px;line-height:1.5}.r4af-vocab .ar{display:block;color:var(--muted);font-size:13px;margin-top:2px}.r4af-detail{display:none;margin-top:14px;border:1px solid #dbe7ff;background:#f6f9ff;border-radius:20px;padding:16px}.r4af-detail.is-visible{display:block}.r4af-detail .ru-main{font-family:Arial,"Noto Sans",sans-serif;font-size:22px;font-weight:800;direction:ltr;unicode-bidi:isolate;text-align:left;margin-bottom:4px}.r4af-detail .example-ru{font-family:Arial,"Noto Sans",sans-serif;font-size:17px;font-weight:700;direction:ltr;unicode-bidi:isolate;text-align:left;margin-top:10px}.r4af-detail .example-ar{color:var(--muted);font-size:14px;margin-top:3px}.r4af-builder-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.r4af-field label{display:block;font-weight:800;font-size:13px;margin:0 0 7px}.r4af-picker{position:relative}.r4af-picker-trigger{width:100%;min-height:54px;border:1px solid #d8e1ef;background:#fff;border-radius:20px;padding:12px 48px 12px 16px;text-align:right;font-size:15px;font-weight:800;color:#26334b;position:relative;cursor:pointer;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}.r4af-picker-trigger:after{content:'⌄';position:absolute;right:17px;top:50%;transform:translateY(-54%);font-size:21px;color:#5f6f89}.r4af-picker.is-open .r4af-picker-trigger:after{transform:translateY(-45%) rotate(180deg)}.r4af-picker-menu{display:none;position:absolute;z-index:60;top:calc(100% + 7px);right:0;left:0;max-height:280px;overflow:auto;padding:8px;background:#fff;border:1px solid #dbe3ef;border-radius:20px;box-shadow:0 18px 45px rgba(23,32,51,.15)}.r4af-picker.is-open .r4af-picker-menu{display:block}.r4af-option{width:100%;border:0;background:transparent;border-radius:14px;padding:11px 12px;text-align:right;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:10px;color:#26334b}.r4af-option:hover,.r4af-option.is-selected{background:#eef4ff;color:#19489f}.r4af-option .ru-mini{font-family:Arial,"Noto Sans",sans-serif;direction:ltr;unicode-bidi:isolate;font-weight:700;color:#52617a}.r4af-builder-result{margin-top:15px;border:1px solid #d8e5ff;background:linear-gradient(135deg,#f4f8ff,#fbfdff);border-radius:20px;padding:18px}.r4af-result-label{font-size:12px;color:var(--muted);font-weight:800}.r4af-built-russian{font-family:Arial,"Noto Sans",sans-serif;font-size:24px;font-weight:800;margin-top:5px;unicode-bidi:isolate}.r4af-built-arabic{font-size:15px;margin-top:5px}.r4af-builder-note{font-size:13px;color:var(--muted);margin-top:8px;line-height:1.7}.r4af-phrase-list{display:grid;gap:9px}.r4af-phrase-row{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;align-items:center;border:1px solid #e8ecf3;border-radius:16px;padding:11px 13px;background:#fbfcff}.r4af-phrase-row .ru{font-family:Arial,"Noto Sans",sans-serif;font-weight:800;unicode-bidi:isolate;text-align:left}.r4af-practice-switch{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin-bottom:14px}.r4af-segment{border:1px solid #d8e1ef;background:#fff;border-radius:14px;padding:10px 8px;font-weight:800;color:#53627b;cursor:pointer}.r4af-segment.is-active{background:#eef4ff;border-color:#bcd0fb;color:#1f4fa7}.r4af-question-box{border:1px solid #e7ebf1;border-radius:20px;padding:16px;background:#fbfcff}.r4af-question-label{font-size:12px;color:var(--muted);font-weight:800;margin-bottom:6px}.r4af-question{font-family:Arial,"Noto Sans",sans-serif;font-size:23px;font-weight:800;unicode-bidi:isolate;min-height:36px}.r4af-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:9px;margin-top:15px}.r4af-answer{border:1px solid #dbe3ef;background:#fff;border-radius:15px;padding:11px 10px;font-weight:800;cursor:pointer;min-height:46px}.r4af-answer.is-correct{border-color:#81c995;background:#edf9f1;color:#156c35}.r4af-answer.is-wrong{border-color:#ef9c96;background:#fff1f0;color:#a72d25}.r4af-feedback{min-height:26px;margin-top:10px;font-size:13px;font-weight:800}.r4af-secondary{border:1px solid #cdd9ee;background:#fff;color:#254f9e;border-radius:15px;padding:10px 14px;font-weight:800;cursor:pointer}.r4af-table-wrap{overflow:auto;border:1px solid #e6ebf2;border-radius:18px}.r4af-table{border-collapse:collapse;width:100%;min-width:650px}.r4af-table th,.r4af-table td{padding:11px 12px;border-bottom:1px solid #edf0f4;text-align:right;font-size:13px;vertical-align:middle}.r4af-table th{background:#f6f8fc;color:#44536a;font-weight:800}.r4af-table td.ru-cell{font-family:Arial,"Noto Sans",sans-serif;direction:ltr;unicode-bidi:isolate;text-align:left;font-weight:800}.r4af-tip{margin-top:13px;border-radius:16px;background:#fff9e9;border:1px solid #f4df9c;padding:12px 13px;font-size:13px;line-height:1.8}.r4af .ru{direction:ltr;unicode-bidi:isolate}.r4af button:focus-visible{outline:3px solid rgba(35,87,185,.2);outline-offset:2px}@media(max-width:760px){.r4af-tabs{grid-template-columns:repeat(2,minmax(0,1fr))}.r4af-tab:last-child{grid-column:1/-1}.r4af-vocab-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.r4af-builder-grid{grid-template-columns:1fr}.r4af-options{grid-template-columns:1fr}.r4af-practice-switch{grid-template-columns:1fr}.r4af-phrase-row{grid-template-columns:1fr}.r4af-hero{align-items:flex-start}.r4af h2{font-size:20px}}@media(max-width:430px){.r4af-card{padding:14px}.r4af-hero{padding:18px 14px}.r4af-vocab-grid{gap:8px}.r4af-vocab{min-height:98px;padding:11px 8px}.r4af-picker-trigger{min-height:56px;padding-right:48px;padding-left:14px}.r4af-built-russian{font-size:22px}}