:root{--bg:#faf7f2;--bg-panel:#fff;--bg-soft:#f3eee6;--ink:#1f1d1a;--ink-soft:#5b574f;--ink-faint:#8c8579;--accent:#b87333;--accent-soft:#f3dcc1;--border:#e6dfd2;--error:#b54545;--ok:#4a8a4a;--sidebar-w:280px;--topbar-h:56px;--action-bar-h:76px}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--ink);-webkit-text-size-adjust:100%;overscroll-behavior-y:contain;min-height:100vh;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Pretendard,Apple SD Gothic Neo,sans-serif;font-size:16px;line-height:1.55}button{font:inherit;cursor:pointer;-webkit-tap-highlight-color:transparent}textarea,input,select{font:inherit}a{color:var(--accent)}.app{grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh;display:grid}.topbar{display:none}.sidebar{background:var(--bg-soft);border-right:1px solid var(--border);flex-direction:column;height:100vh;padding:24px 18px;display:flex;position:sticky;top:0;overflow-y:auto}.drawer-backdrop{display:none}.sidebar h1{letter-spacing:-.01em;margin:0 0 4px;font-size:16px}.sidebar .subtitle{color:var(--ink-soft);margin-bottom:20px;font-size:12px}.sidebar h2{text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);margin:18px 0 6px;font-size:11px;font-weight:600}.nav-list{margin:0;padding:0;list-style:none}.nav-list li{cursor:pointer;color:var(--ink-soft);border-radius:6px;justify-content:space-between;align-items:center;gap:8px;min-height:36px;padding:8px 10px;font-size:14px;display:flex}.nav-list li:hover{color:var(--ink);background:#b8733314}.nav-list li.active{background:var(--accent-soft);color:var(--ink);font-weight:600}.nav-list .count{color:var(--ink-faint);background:var(--bg-panel);border:1px solid var(--border);text-align:center;border-radius:10px;min-width:24px;padding:2px 6px;font-size:11px}.nav-list li.active .count{background:#fff9}.main{width:100%;max-width:920px;padding:32px 48px 80px}.context-bar{color:var(--ink-soft);flex-wrap:wrap;gap:8px;margin-bottom:18px;font-size:13px;display:flex}.chip{background:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:4px 10px;font-size:12px}.chip strong{color:var(--ink);font-weight:600}.mobile-pickers{display:none}.prompt-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:10px;margin-bottom:16px;padding:18px 20px}.prompt-card.collapsible summary{cursor:pointer;-webkit-user-select:none;user-select:none;justify-content:space-between;align-items:center;list-style:none;display:flex}.prompt-card.collapsible summary::-webkit-details-marker{display:none}.prompt-card.collapsible .chevron{color:var(--ink-faint);transition:transform .2s}.prompt-card.collapsible[open] .chevron{transform:rotate(180deg)}.prompt-card .label{text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);font-size:11px}.school-prompts{flex-direction:column;gap:6px;margin-top:12px;display:flex}.prompt-option{background:var(--bg-soft);border:1px solid var(--border);cursor:pointer;text-align:left;color:var(--ink-soft);border-radius:6px;justify-content:space-between;align-items:center;gap:12px;min-height:44px;padding:10px 12px;font-size:13px;display:flex}.prompt-option:hover{background:#b8733314}.prompt-option.selected{background:var(--accent-soft);border-color:var(--accent);color:var(--ink)}.prompt-option .word{color:var(--ink-faint);white-space:nowrap;font-size:11px}.question-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:10px;margin-bottom:14px;padding:22px 24px;box-shadow:0 1px 3px #00000008}.question-card .turn-label{text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);margin-bottom:10px;font-size:11px}.question-card .question-text{color:var(--ink);font-size:18px;font-weight:500;line-height:1.5}.answer-area{border:1px solid var(--border);background:var(--bg-panel);resize:vertical;border-radius:10px;width:100%;min-height:220px;padding:16px 18px;font-size:16px;line-height:1.6}.answer-area:focus{outline:2px solid var(--accent-soft);border-color:var(--accent)}.action-bar{justify-content:flex-end;align-items:center;gap:10px;margin-top:14px;display:flex}.btn{border:1px solid var(--border);background:var(--bg-panel);color:var(--ink);border-radius:8px;min-height:44px;padding:12px 20px;font-size:15px;font-weight:500}.btn:hover{background:var(--bg-soft)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:#a0612a}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.ghost{color:var(--ink-soft);background:0 0;border-color:#0000;padding:12px}.btn.ghost:hover{color:var(--ink);background:var(--bg-soft)}.btn.full{width:100%}.history-toggle{margin-top:28px}.history-toggle summary{text-transform:uppercase;letter-spacing:.08em;color:var(--ink-faint);cursor:pointer;-webkit-user-select:none;user-select:none;padding:8px 0;font-size:12px;font-weight:600}.history{margin-top:8px}.history-item{background:var(--bg-panel);border:1px solid var(--border);border-radius:8px;margin-bottom:12px;padding:12px 14px;font-size:13px}.history-item .q{color:var(--ink-soft);margin-bottom:6px}.history-item .a{color:var(--ink);white-space:pre-wrap}.banner{border-radius:8px;margin-bottom:14px;padding:10px 14px;font-size:13px}.banner.error{color:var(--error);background:#fde9e9;border:1px solid #f4c4c4}.banner.ok{color:var(--ok);background:#e8f4e8;border:1px solid #c5e0c5}.spinner{border:2px solid 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hr{border:none;border-top:1px solid var(--border);margin:28px 0}.wiki-article em{color:var(--ink-soft)}.wiki-empty{background:var(--bg-panel);border:1px dashed var(--border);text-align:center;color:var(--ink-soft);border-radius:10px;padding:60px 32px}.wiki-empty-icon{opacity:.6;margin-bottom:12px;font-size:36px}.wiki-empty h3{color:var(--ink);margin:0 0 12px;font-size:16px}.wiki-empty p{margin:0 0 10px;font-size:14px}.signin-screen{background:var(--bg);justify-content:center;align-items:center;min-height:100dvh;padding:24px;display:flex}.signin-card{background:var(--bg-panel);border:1px solid var(--border);border-radius:12px;width:100%;max-width:360px;padding:32px 28px;box-shadow:0 4px 16px #0000000a}.signin-card h1{margin:0 0 4px;font-size:22px}.signin-card .subtitle{color:var(--ink-soft);margin-bottom:22px;font-size:14px}.signin-card label{color:var(--ink-soft);margin-bottom:14px;font-size:13px;display:block}.signin-card label 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0;border:none;border-radius:6px;justify-content:center;align-items:center;min-width:40px;min-height:40px;padding:8px;display:flex}.topbar-btn:active{background:var(--bg-soft)}.topbar-title{flex:1;min-width:0;overflow:hidden}.topbar-cat{color:var(--ink);text-overflow:ellipsis;white-space:nowrap;font-size:15px;font-weight:600;overflow:hidden}.topbar-sub{color:var(--ink-faint);text-overflow:ellipsis;white-space:nowrap;font-size:11px;overflow:hidden}.sidebar{z-index:50;border-right:1px solid var(--border);width:84vw;max-width:320px;height:100dvh;transition:transform .22s;position:fixed;top:0;left:0;overflow-y:auto;transform:translate(-100%)}.sidebar.open{transform:translate(0)}.drawer-backdrop{z-index:40;pointer-events:none;background:0 0;transition:background .22s;display:block;position:fixed;inset:0}.drawer-backdrop.open{pointer-events:auto;background:#00000059}.main{padding:16px 14px calc(var(--action-bar-h) + 24px);max-width:none}.mobile-pickers{grid-template-columns:1fr 1fr;gap:8px;margin-bottom:14px;display:grid}.mobile-picker{border:1px solid var(--border);background:var(--bg-panel);width:100%;color:var(--ink);appearance:none;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%238c8579' stroke-width='2.5'><polyline points='6 9 12 15 18 9'/></svg>");background-position:right 12px center;background-repeat:no-repeat;border-radius:8px;min-height:44px;padding:10px 32px 10px 12px;font-size:14px}.context-bar{display:none}.question-card{padding:18px}.question-card .question-text{font-size:17px}.answer-area{min-height:180px;font-size:16px}.action-bar{background:var(--bg);padding:12px 14px calc(12px + env(safe-area-inset-bottom,0px));border-top:1px solid var(--border);z-index:20;gap:8px;margin:16px -14px 0;position:sticky;bottom:0}.btn.primary{flex:1}.btn.ghost{flex:none}.prompt-card.collapsible{padding:14px 16px}.prompt-card.collapsible[open]{padding-bottom:16px}.nav-list li{min-height:44px;padding:10px 12px}.wiki-article{border-radius:8px;padding:20px 18px}.wiki-article h2{font-size:12px}}