.kv-teacher-launcher{z-index:40;right:max(12px, env(safe-area-inset-right));bottom:calc(16px + env(safe-area-inset-bottom));border:1px solid var(--border);background:var(--card);width:70px;color:var(--ink);box-shadow:var(--shadow-soft);font:700 11px/1.4 var(--font-sans);touch-action:manipulation;border-radius:20px;flex-direction:column;align-items:center;gap:3px;padding:6px;display:flex;position:fixed}.kv-teacher-launcher img{object-fit:cover;object-position:center 18%;border-radius:13px;width:46px;height:54px}.kv-teacher-overlay{z-index:70;background:#081c177a;position:fixed;inset:0}.kv-teacher-dialog{z-index:71;width:min(590px,100% - 20px);max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px - env(safe-area-inset-top) - env(safe-area-inset-bottom));overscroll-behavior:contain;scrollbar-gutter:stable;border:1px solid var(--border);background:var(--card);color:var(--ink);box-shadow:var(--shadow-lift);font-family:var(--font-sans);border-radius:25px;font-size:1rem;line-height:1.65;position:fixed;top:50%;left:50%;overflow-y:auto;transform:translate(-50%,-50%)}.kv-teacher-dialog *{box-sizing:border-box}.kv-teacher-header{z-index:2;border-bottom:1px solid var(--border);background:var(--card);align-items:center;gap:12px;padding:16px 18px;display:flex;position:sticky;top:0}.kv-teacher-header>img{object-fit:cover;object-position:center 18%;border-radius:13px;flex-shrink:0;width:48px;height:62px}.kv-teacher-header>div{flex:1;min-width:0}.kv-teacher-title{font:600 1.3em/1.3 var(--font-display);overflow-wrap:anywhere;margin:0}.kv-teacher-description{color:var(--ink-soft);margin:3px 0 0;font-size:.75em}.kv-teacher-close{border:1px solid var(--border);background:var(--card);width:44px;min-height:44px;color:var(--ink);border-radius:13px;flex-shrink:0;place-items:center;display:grid}.kv-teacher-body{padding:18px}.kv-teacher-library label{font-size:.8em;font-weight:700;display:block}.kv-teacher-library :is(input,select){border:1px solid var(--border);background:var(--card);width:100%;min-width:0;max-width:100%;min-height:48px;color:var(--ink);font:inherit;border-radius:13px;padding:10px 12px;font-size:max(16px,1em)}.kv-teacher-library select{text-overflow:ellipsis;margin-top:5px}.kv-teacher-search{margin-top:5px;position:relative}.kv-teacher-search>svg{color:var(--ink-soft);pointer-events:none;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.kv-teacher-search>input{padding-left:40px}.kv-teacher-filters{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;margin-top:12px;display:grid}.kv-teacher-library .kv-teacher-small{color:var(--ink-soft);margin:11px 0;font-size:.75em;line-height:1.65}.kv-teacher-rule{margin-top:20px}.kv-teacher-rule>h3{font:600 1.5em/1.3 var(--font-display);overflow-wrap:anywhere;margin:4px 0 17px}.kv-teacher-rule h4{align-items:center;gap:7px;margin:0 0 6px;font-size:.9em;font-weight:800;display:flex}.kv-teacher-rule p{overflow-wrap:anywhere;margin:0}.kv-teacher-rule>section{margin:16px 0}.kv-teacher-definition,.kv-teacher-step{background:var(--secondary);color:var(--ink);border-radius:16px;padding:15px}.kv-teacher-library button{border:1px solid var(--border);background:var(--card);min-height:46px;color:var(--ink);font:inherit;border-radius:13px;justify-content:center;align-items:center;gap:8px;padding:10px 13px;font-size:.85em;font-weight:700;display:inline-flex}.kv-teacher-library button:disabled{opacity:.55;cursor:not-allowed}.kv-teacher-library button>svg{flex-shrink:0}.kv-teacher-actions{flex-wrap:wrap;gap:9px;margin:18px 0 12px;display:flex}.kv-teacher-actions .kv-teacher-primary{background:var(--primary);color:var(--primary-foreground);border-color:var(--primary)}.kv-teacher-library .kv-teacher-practice-toggle{background:var(--secondary);width:100%;margin-top:5px}.kv-teacher-choices{gap:8px;margin:12px 0;display:grid}.kv-teacher-choices button{text-align:left;overflow-wrap:anywhere;justify-content:flex-start;width:100%;font-weight:600}.kv-teacher-choices button[aria-pressed=true]{background:var(--secondary);border-color:var(--primary)}.kv-teacher-rule .kv-teacher-feedback{margin-top:12px;font-size:.9em}.kv-teacher-audio{color:var(--ink-soft);flex-wrap:wrap;align-items:center;gap:8px;margin-top:16px;font-size:.75em;display:flex}.kv-teacher-audio>span[role=status]{flex:1;min-width:140px}.kv-teacher-audio button{min-height:44px;font-size:1em}.kv-teacher-speaking{background:var(--primary);border-radius:50%;flex-shrink:0;width:10px;height:10px;animation:1.8s ease-in-out infinite kv-teacher-glow}.kv-teacher-notes{border-top:1px solid var(--border);color:var(--ink-soft);margin-top:16px;padding-top:4px;font-size:.75em}.kv-teacher-notes summary{min-height:44px;color:var(--ink);padding:10px 0}.kv-teacher-notes p{margin:7px 0}.kv-teacher-notes a{color:var(--primary);text-decoration:underline}.kv-teacher-empty{color:var(--ink-soft);margin:18px 0}@keyframes kv-teacher-glow{0%,to{opacity:.65}50%{opacity:1}}@media (prefers-reduced-motion:reduce){.kv-teacher-speaking{animation:none}}html[data-calm="1"] .kv-teacher-speaking{animation:none}@media (width<=440px){.kv-teacher-header{gap:9px;padding:13px}.kv-teacher-header>img{width:39px;height:52px}.kv-teacher-title{font-size:1.15em}.kv-teacher-body{padding:14px}.kv-teacher-filters{grid-template-columns:minmax(0,1fr);gap:10px}.kv-teacher-actions{grid-template-columns:minmax(0,1fr);display:grid}.kv-teacher-launcher{width:64px}}