:root{--bg: #f6f7f9;--panel: #ffffff;--panel-2: #eef1f5;--border: #d9dee6;--text: #1c2128;--muted: #6b7280;--accent: #2563eb;--gr: #1d4ed8;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}.app{max-width:1000px;margin:0 auto;padding:24px 20px 60px}.app-header h1{margin:0;font-size:26px}.subtitle{margin:4px 0 0;color:var(--muted);font-size:14px}.tasks{display:flex;gap:8px;margin:20px 0 24px;flex-wrap:wrap}.task-tab{display:flex;flex-direction:column;align-items:flex-start;gap:2px;padding:10px 16px;background:var(--panel);border:1px solid var(--border);border-radius:10px;color:var(--text);cursor:pointer;transition:border-color .15s,background .15s}.task-tab:hover{border-color:var(--accent)}.task-tab.active{border-color:var(--accent);background:var(--panel-2)}.task-label{font-size:15px;font-weight:600}.task-sub{font-size:12px;color:var(--muted)}.placeholder{padding:40px;text-align:center;color:var(--text)}.muted{color:var(--muted)}.dialogues{display:grid;grid-template-columns:240px 1fr;gap:20px}.topic-list{display:flex;flex-direction:column;gap:16px}.year-group{display:flex;flex-direction:column;gap:6px}.year-head{margin:0 0 2px;font-size:12px;font-weight:700;letter-spacing:.06em;color:var(--muted)}.topic-item{display:flex;flex-direction:column;gap:2px;text-align:left;padding:10px 12px;background:var(--panel);border:1px solid var(--border);border-radius:8px;color:var(--text);cursor:pointer}.topic-item:hover{border-color:var(--accent)}.topic-item.active{border-color:var(--accent);background:var(--panel-2)}.topic-gr{font-weight:600;color:var(--gr)}.topic-ru{font-size:12px;color:var(--muted)}.topic-detail{background:var(--panel);border:1px solid var(--border);border-radius:12px;padding:20px 22px}.topic-detail-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px}.topic-detail h2{margin:0;color:var(--gr)}.topic-ru-title{margin:2px 0 0;color:var(--muted)}.toggle{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--muted);white-space:nowrap}.scenario{margin:14px 0 4px;padding:12px 14px;background:var(--panel-2);border-left:3px solid var(--accent);border-radius:8px}.scenario-gr{margin:0;line-height:1.55}.scenario-ru{margin:8px 0 0;line-height:1.5;font-size:13px;color:var(--muted)}.block{margin-top:22px}.block h3{margin:0 0 10px;font-size:14px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.vocab{margin-top:22px}.vocab-head{margin:0;font-size:15px;font-weight:700;color:var(--text)}.vocab .block{margin-top:14px}.vocab .block h3{font-size:12px}.phrase-list{list-style:none;margin:0;padding:0;display:grid;gap:8px}.phrase-list.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.phrase-list.cols-dense{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}.phrase-list li{display:flex;flex-direction:column;gap:2px;padding:8px 12px;background:var(--panel-2);border-radius:8px}.phrase-gr{color:var(--gr)}.phrase-ru{font-size:13px;color:var(--muted)}.roles-legend{display:flex;gap:10px;margin-bottom:12px;flex-wrap:wrap}.role-tag{font-size:13px;font-weight:600;padding:3px 10px;border-radius:999px}.role-tag.role-a{background:#dbeafe;color:#1e40af}.role-tag.role-b{background:var(--panel-2);color:var(--text)}.role-ru{font-weight:400;color:var(--muted)}.dialogue-sample{display:flex;flex-direction:column;gap:8px}.line{display:flex;flex-direction:column;gap:2px;padding:8px 12px;border-radius:8px;max-width:80%}.line.b{background:var(--panel-2);align-self:flex-start}.line.a{background:#dbeafe;align-self:flex-end}.line-role{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;color:var(--muted)}.line-gr{color:var(--text)}.line-ru{font-size:12px;color:var(--muted)}@media(max-width:680px){.dialogues{grid-template-columns:1fr}}