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(hover:none){.tc-copy{opacity:1}}.tc-next{flex-wrap:wrap;gap:8px;padding-left:38px;display:flex}.tc-chip{border:1px solid var(--border-hover);min-height:36px;color:var(--text-secondary);font:inherit;cursor:pointer;background:0 0;border-radius:999px;padding:7px 12px;font-size:13px}.tc-chip:hover{background:var(--bg-input);color:var(--text-primary)}.tc-chip:focus-visible{outline:2px solid var(--tc-fill,var(--accent-green));outline-offset:2px}.tc-empty{text-align:center;width:100%;max-width:560px;margin:auto;padding:20px 0 8px}.tc-empty h2{font-family:var(--rv-serif,Georgia, serif);color:var(--text-primary);margin:0 0 8px;font-size:24px;font-weight:600;line-height:1.25}.tc-empty p{max-width:440px;color:var(--text-muted);margin:0 auto;font-size:14px;line-height:1.55}.tc-starters{text-align:left;gap:8px;margin:22px 0 0;padding:0;list-style:none;display:grid}.tc-starter{border:1px solid var(--border-primary);background:var(--bg-card);width:100%;min-height:44px;color:var(--text-secondary);font:inherit;text-align:left;cursor:pointer;border-radius:8px;justify-content:space-between;align-items:center;gap:12px;padding:11px 14px;font-size:14px;line-height:1.4;display:flex}.tc-starter svg{color:var(--text-muted);flex-shrink:0}.tc-starter:hover{border-color:var(--border-hover);background:var(--bg-input);color:var(--text-primary)}.tc-starter:hover svg{color:var(--accent-green-text)}.tc-composer{--tc-fill:var(--rv-accent,var(--accent-green));--tc-on-fill:var(--rv-on-accent,white);padding:10px 0 env(safe-area-inset-bottom,0);flex-shrink:0}.tc-box{border:1px solid var(--border-hover);background:var(--bg-card);border-radius:12px;align-items:flex-end;gap:8px;padding:8px 8px 8px 14px;display:flex}.tc-box:focus-within{border-color:var(--tc-fill);box-shadow:0 0 0 1px var(--tc-fill)}.tc-input{resize:none;min-width:0;max-height:150px;color:var(--text-primary);font:inherit;background:0 0;border:0;outline:0;flex:1;padding:7px 0;font-size:16px;line-height:1.5}.tc-input::placeholder{color:var(--text-muted)}.tc-send{cursor:pointer;background:var(--tc-fill);width:36px;height:36px;color:var(--tc-on-fill);border:0;border-radius:999px;flex-shrink:0;place-items:center;display:grid}.tc-send:hover:not(:disabled){background:var(--rv-accent-hover,var(--accent-green-dark,var(--accent-green)))}.tc-send:disabled{background:var(--bg-input);color:var(--text-muted);cursor:default}.tc-foot{color:var(--text-muted);justify-content:space-between;align-items:baseline;gap:14px;margin:8px 2px 0;font-size:11.5px;line-height:1.45;display:flex}.tc-left{color:var(--text-secondary);flex-shrink:0;font-weight:600}.tutor-dock .tc-scroll{padding:14px 14px 6px}.tutor-dock .tc-composer{padding:6px 14px 12px}.tc-compact .tc-you{max-width:92%}.tc-compact .tc-ai-col{width:100%;max-width:100%}.tc-compact .tc-ai{padding:12px 14px;font-size:14px}.tc-compact .tc-foot{display:block}.tc-compact .tc-left{margin-top:2px;display:block}@media (max-width:768px){.tc-you{max-width:88%}.tc-empty h2{font-size:22px}}@media (max-width:599px){.tc{height:clamp(380px,100vh - 240px,880px);height:clamp(380px, calc(100dvh - 240px - env(safe-area-inset-bottom,0px)), 880px)}.tc-composer{padding-bottom:0}.tc-head{gap:10px;padding-bottom:8px}.tc-mark-lg{width:28px;height:28px}.tc-head-t span{display:none}.tab-content-body:has(>.tc){padding-bottom:8px!important}}@media (prefers-reduced-motion:reduce){.tc-typing .typing-indicator span{opacity:.7;animation:none}}