:root{--bg:#f6f8fc;--surface:#fff;--alt:#f2f6fc;--text:#1a2230;--muted:#5d6978;--border:#dce5f0;--blue:#2563eb;--amber:#b45309;--purple:#7c3aed;--green:#16a34a;--red:#dc2626;--cyan:#0891b2;--shadow:0 8px 24px rgba(15,23,42,.08);--r:14px;font-family:"Hiragino Sans","Noto Sans JP","Yu Gothic UI",system-ui,sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);line-height:1.85}
.shell{width:min(620px,100%);margin:0 auto;padding:16px 16px 90px}
.eyebrow{color:var(--muted);font-size:12px;letter-spacing:.08em;margin:0;display:flex;align-items:center;gap:8px}
.protobadge{background:var(--purple);color:#fff;font-size:10px;font-weight:800;border-radius:999px;padding:2px 9px;letter-spacing:.02em}
h1{font-size:20px;margin:4px 0 2px}.sub{color:var(--muted);font-size:13px;margin:0 0 10px}

.tabs{display:grid;grid-template-columns:repeat(4,1fr);gap:6px;position:sticky;top:0;background:var(--bg);padding:8px 0;z-index:5}
.tabs button{padding:7px 2px 5px;border:1px solid var(--border);border-radius:10px;background:#fff;font-weight:800;font-size:13px;color:var(--muted);cursor:pointer;font-family:inherit;line-height:1.3}
.tabs button small{display:block;font-size:10px;font-weight:600}
.tabs button i{display:block;width:6px;height:6px;border-radius:50%;background:var(--border);margin:4px auto 0}
.tabs button.active{background:var(--blue);color:#fff;border-color:var(--blue)}
.tabs button.read i{background:var(--green)}
.unit{display:none}.unit.active{display:block}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);box-shadow:var(--shadow);padding:18px;margin:14px 0}
h2{font-size:17px;margin:2px 0 10px}p,li{font-size:14.5px}

.scene{color:var(--muted);font-size:13px;font-style:italic;margin:0 0 10px}
.dialogue{background:var(--alt);border-radius:12px;padding:12px 14px;margin:10px 0}
.dialogue .spk{font-weight:800;color:var(--blue);font-size:12px;display:block;margin-bottom:4px}

.corebox{border-left:4px solid var(--purple);background:#faf5ff;border-radius:8px;padding:10px 12px;color:#5b21b6;font-weight:700;margin:10px 0}
.callout{border-left:4px solid var(--amber);background:#fffbeb;border-radius:8px;padding:10px 12px;color:#92400e;font-size:14px;margin:12px 0}
.chip{display:inline-block;border:1px dashed var(--blue);color:var(--blue);background:#eff6ff;border-radius:999px;padding:0 9px;font-size:13px;cursor:pointer;font-family:inherit;font-weight:700}
.termpop{position:fixed;left:50%;transform:translateX(-50%);bottom:14px;width:min(560px,92%);background:#1f2937;color:#f9fafb;border-radius:12px;padding:12px 40px 12px 14px;font-size:14px;box-shadow:0 10px 30px rgba(0,0,0,.25);display:none;z-index:20;line-height:1.7}
.termpop b{color:#93c5fd;display:block;margin-bottom:2px}
.termpop button{position:absolute;right:6px;top:6px;background:none;border:0;color:#9ca3af;font-size:18px;cursor:pointer;padding:4px 8px}

.qcard{border-left:4px solid var(--border);padding-left:12px;margin:18px 0}
.qcard h3{font-size:14.5px;margin:0 0 10px;font-weight:800}
.choices{display:flex;flex-direction:column;gap:8px}
.choices button{text-align:left;padding:10px 13px;border:1px solid var(--border);border-radius:10px;background:#fff;font-family:inherit;font-size:14px;cursor:pointer;color:var(--text)}
.choices button:hover{border-color:var(--blue)}
.choices button.correct{border-color:var(--green);background:#f0fdf4;font-weight:700}
.choices button.wrong{border-color:var(--red);background:#fef2f2}
.choices button.selected{box-shadow:0 0 0 2px rgba(37,99,235,.35)}
.feedback{margin-top:9px;border-left:4px solid var(--blue);background:#eff6ff;border-radius:8px;padding:10px 12px;font-size:13.5px;color:#1e40af;display:none;line-height:1.7}
.feedback.show{display:block}
.feedback.correct{border-color:var(--green);background:#f0fdf4;color:#166534}
.feedback.wrong{border-color:var(--red);background:#fef2f2;color:#991b1b}

.console{border-radius:10px;overflow:hidden;margin:10px 0;border:1px solid #1e293b}
.console .cmd{background:#0f172a;color:#e2e8f0;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px;padding:8px 14px;white-space:pre}
.console .cmd .cm{color:#64748b}
.console .result{background:var(--surface);padding:10px 12px}
table.rtable{width:100%;border-collapse:collapse;font-size:13px}
table.rtable th,table.rtable td{border:1px solid var(--border);padding:6px 7px;text-align:center}
table.rtable th{background:var(--alt);color:var(--muted);font-weight:700}
table.rtable td.na{color:var(--muted);font-style:italic}
table.rtable th .chip{font-size:12px;padding:0 7px}
svg{display:block;max-width:340px;width:100%;height:auto;margin:0 auto}
svg.wide{max-width:440px}

.blanktext{font-size:14.5px;line-height:2.1}
.blanktext select{font-family:inherit;font-size:13.5px;font-weight:700;padding:2px 6px;border-radius:8px;border:1px solid var(--blue);background:#eff6ff;color:var(--blue);margin:0 2px}
.blanktext select.correct{border-color:var(--green);background:#f0fdf4;color:#166534}
.blanktext select.wrong{border-color:var(--red);background:#fef2f2;color:#991b1b}

.reveal{margin-top:14px;padding:9px 20px;border:1px solid var(--blue);border-radius:999px;background:#fff;color:var(--blue);font-weight:800;font-size:13.5px;cursor:pointer;font-family:inherit}
.modelreport{display:none;border-left:4px solid var(--purple);background:#faf5ff;border-radius:8px;padding:12px 14px;margin-top:12px;color:#5b21b6;font-size:14px}
.modelreport.show{display:block}

.next{display:block;margin:18px auto 4px;padding:10px 24px;border:0;border-radius:999px;background:var(--blue);color:#fff;font-weight:800;font-size:14px;cursor:pointer;font-family:inherit}
.nav{display:flex;justify-content:space-between;gap:8px;margin-top:14px}
.nav a,.nav span{color:var(--blue);text-decoration:none;border:1px solid var(--blue);border-radius:8px;padding:8px 12px;background:#fff;font-weight:700;font-size:13.5px}
.nav span.disabled{color:var(--muted);border-color:var(--border);background:var(--alt)}

.acts{display:flex;gap:6px;margin:10px 0}
.acts span{flex:1;text-align:center;font-size:11px;font-weight:800;color:var(--muted);border:1px solid var(--border);border-radius:8px;padding:6px 2px;background:#fff}
.acts span.active{background:var(--purple);color:#fff;border-color:var(--purple)}
.acts span.done{border-color:var(--green);color:var(--green)}
.audittable{width:100%;border-collapse:collapse;font-size:13px;margin:10px 0}
.audittable th,.audittable td{border:1px solid var(--border);padding:7px;text-align:left;vertical-align:top}
.audittable th{background:var(--alt);color:var(--muted)}
.audittable td.pick{text-align:center;width:34px}
.audittable input[type=checkbox]{width:18px;height:18px}
.audittable tr.judged-correct{background:#f0fdf4}
.audittable tr.judged-wrong{background:#fef2f2}
.rowexplain{display:none;font-size:12.5px;color:var(--muted);margin-top:5px;line-height:1.6}
.rowexplain.show{display:block}
.actresult{font-weight:800;color:var(--purple);margin-top:8px;font-size:14px}