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16px;display:flex}.tutor-head__identity{align-items:baseline;gap:9px;min-width:0;display:flex}.tutor-head h2{font-family:var(--font-reading);color:var(--tutor-ink);white-space:nowrap;margin:0;font-size:22px}.tutor-head__identity>span{color:var(--tutor-ink-soft);letter-spacing:.08em;white-space:nowrap;font-size:10px}.tutor-head__controls{justify-content:flex-end;align-items:center;gap:7px;min-width:0;display:flex}.model-summary{border:1px solid var(--tutor-rule-strong);min-width:0;min-height:40px;color:var(--tutor-ink);background:var(--tutor-elevated);text-align:left;grid-template-columns:minmax(0,auto) auto 10px;align-items:center;gap:7px;padding:7px 9px;display:grid}.model-summary>span{text-overflow:ellipsis;white-space:nowrap;font-size:12px;font-weight:700;overflow:hidden}.model-summary small{color:var(--tutor-ink-soft);white-space:nowrap;font-size:10px}.model-summary i{color:var(--tutor-accent);font-size:13px;font-style:normal;transition:transform .16s}.model-summary[aria-expanded=true] i{transform:rotate(180deg)}.model-summary:hover{border-color:var(--tutor-accent)}.vision-warning{border:1px solid var(--tutor-rule-strong);color:var(--tutor-ink-soft);white-space:nowrap;padding:4px 6px;font-size:10px}.tutor-sheet-close,.tutor-dock,.tutor-backdrop{display:none}.model-console{border-bottom:1px solid var(--tutor-rule);background:var(--tutor-console);grid-template-columns:minmax(0,1fr) minmax(150px,.92fr);gap:20px;padding:15px 20px 18px;animation:.16s both reveal-settings;display:grid}.model-select-label{min-width:0;display:grid}.model-select-label>span,.reasoning-control__label span{color:var(--tutor-ink-soft);letter-spacing:.13em;font-size:10px;font-weight:700}.model-select-label select{border:0;border-bottom:1px solid var(--tutor-rule-strong);width:100%;color:var(--tutor-ink);text-overflow:ellipsis;background:0 0;border-radius:0;margin-top:6px;padding:6px 24px 6px 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var(--tutor-console);background:var(--tutor-accent);width:8px;height:8px;box-shadow:0 0 0 1px var(--tutor-accent);border-radius:50%}.reasoning-ticks{color:var(--tutor-ink-soft);text-align:center;font-size:10px;display:grid}.reasoning-ticks span:first-child{text-align:left}.reasoning-ticks span:last-child{text-align:right}.model-switch-hint{border-top:1px solid var(--tutor-rule);color:var(--tutor-ink-soft);grid-column:1/-1;margin:-5px 0 0;padding-top:10px;font-size:12px;line-height:1.5}.chat-scroll{background:linear-gradient(90deg, transparent 20px, var(--tutor-accent-soft) 20px 21px, transparent 21px), var(--tutor-canvas);scrollbar-color:var(--tutor-rule-strong) transparent;scrollbar-width:thin;flex:auto;min-height:0;padding:22px;overflow-y:auto}.chat-content{min-height:100%}.chat-empty{min-height:100%;color:var(--tutor-ink-soft);grid-template-rows:auto minmax(0,1fr);gap:16px;padding:4px;display:grid}.chat-empty__intro{align-items:center;gap:12px;padding:2px 2px 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var(--tutor-rule-strong);background:var(--tutor-user-surface);margin-left:42px;padding:12px 14px}.chat-message--assistant{border-left:2px solid var(--tutor-accent);padding-left:14px}.chat-message .markdown-content{color:var(--tutor-ink);font-size:15px;line-height:1.72}.chat-message--user .markdown-content{font-family:var(--font-body);font-size:14px;line-height:1.68}.chat-message--assistant .markdown-content{font-family:var(--font-reading)}.chat-message .markdown-content code{border-color:var(--tutor-rule);background:var(--tutor-code-surface)}.chat-message .markdown-content pre{background:var(--tutor-pre-surface)}.chat-message .markdown-content th,.chat-message .markdown-content td{border-color:var(--tutor-rule-strong)}.chat-message .markdown-content th{color:var(--tutor-ink);background:var(--tutor-console)}.chat-message .markdown-content a{color:var(--tutor-link)}.chat-message .markdown-content blockquote{border-left-color:var(--tutor-accent);color:var(--tutor-ink-soft)}.chat-message 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