:root{--color-bg: #f2f7ff;--color-surface: #ffffff;--color-ink: #253449;--color-primary: #2b6cb0;--color-primary-dark: #1a4e85;--color-primary-soft: #dcebfb;--color-accent: #f6a623;--color-correct: #2f9e63;--color-wrong: #d64550;--color-line: #cfdff2;--radius: 14px}*{box-sizing:border-box}body{margin:0;background:var(--color-bg);color:var(--color-ink);font-family:Hiragino Maru Gothic ProN,BIZ UDPGothic,Yu Gothic,Meiryo,sans-serif;font-size:17px;line-height:1.9}#site-header{display:flex;flex-wrap:wrap;align-items:center;gap:8px 20px;padding:14px 24px;background:var(--color-primary);color:#fff}#site-header .site-title{color:#fff;font-size:1.25em;font-weight:700;text-decoration:none}.site-nav{display:flex;flex-wrap:wrap;gap:4px 12px}.site-nav a{color:#eaf3ff;text-decoration:none;padding:2px 10px;border-radius:999px;font-size:.9em}.site-nav a:hover{background:var(--color-primary-dark)}.site-nav a.current{background:#fff;color:var(--color-primary-dark);font-weight:700}#page-nav{display:flex;justify-content:space-between;gap:12px;max-width:860px;margin:0 auto;padding:12px 20px 48px}#page-nav a{display:inline-block;padding:10px 18px;background:var(--color-surface);border:2px solid var(--color-primary);border-radius:999px;color:var(--color-primary-dark);text-decoration:none;font-weight:700}#page-nav a:hover{background:var(--color-primary-soft)}#content{max-width:860px;margin:0 auto;padding:24px 20px 40px}h1{font-size:1.7em;border-bottom:4px solid var(--color-accent);padding-bottom:6px}h2{font-size:1.35em;margin-top:2em;padding-left:12px;border-left:8px solid var(--color-primary)}h3{font-size:1.1em;margin-top:1.5em}.lead{font-size:1.1em;color:var(--color-primary-dark);font-weight:700}code{background:#eef2f8;border-radius:6px;padding:1px 6px;font-family:Consolas,Menlo,monospace}.loading{color:#7a8ba3}.callout{border-radius:var(--radius);padding:14px 18px;margin:1.4em 0;border:2px solid}.callout-point{background:#fff8e6;border-color:var(--color-accent)}.callout-tip{background:#eefaf2;border-color:var(--color-correct)}.callout-caution{background:#fdeef0;border-color:var(--color-wrong)}.callout-title{margin:0 0 4px;font-weight:700}.callout-body{margin:0}.block-error{background:#fdeef0;border:2px dashed var(--color-wrong);border-radius:var(--radius);color:var(--color-wrong);padding:10px 16px;margin:1em 0;font-weight:700}.mermaid-figure{margin:1.6em 0;padding:16px;background:var(--color-surface);border:2px solid var(--color-line);border-radius:var(--radius);text-align:center;overflow-x:auto}.mermaid-figure svg{max-width:100%;height:auto}.mermaid-figure figcaption{margin-top:8px;color:#61748e;font-size:.9em}.mermaid-figure pre{text-align:left;overflow-x:auto}.quiz{background:var(--color-surface);border:3px solid var(--color-primary);border-radius:var(--radius);padding:16px 20px;margin:1.8em 0}.quiz-label{display:inline-block;margin:0;padding:2px 14px;background:var(--color-primary);color:#fff;border-radius:999px;font-size:.85em;font-weight:700}.quiz-question{font-weight:700;font-size:1.05em}.quiz-choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px}.quiz-choices button,.ean-choices button,.sb-choices button{font:inherit;padding:10px 14px;background:var(--color-surface);border:2px solid var(--color-line);border-radius:10px;cursor:pointer}.quiz-choices button:hover:not(:disabled),.ean-choices button:hover:not(:disabled),.sb-choices button:hover:not(:disabled){border-color:var(--color-primary);background:var(--color-primary-soft)}.quiz-choices button.correct,.ean-choices button.correct,.sb-choices button.correct{border-color:var(--color-correct);background:#eefaf2;font-weight:700}.quiz-choices button.wrong,.ean-choices button.wrong,.sb-choices button.wrong{border-color:var(--color-wrong);background:#fdeef0}.quiz-feedback,.ean-feedback,.sb-feedback{font-weight:700;color:var(--color-wrong);min-height:1.2em}.quiz-feedback.is-correct{color:var(--color-correct)}.ean-feedback:empty,.sb-feedback:empty{min-height:0}.quiz-explanation{background:#f4f8fd;border-radius:10px;padding:10px 16px}.quiz-retry,.ean-next-question{font:inherit;padding:6px 16px;border:2px solid var(--color-primary);border-radius:999px;background:var(--color-surface);color:var(--color-primary-dark);cursor:pointer;font-weight:700}.unit-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px;margin-top:24px}.unit-card{display:flex;flex-direction:column;gap:4px;background:var(--color-surface);border:2px solid var(--color-line);border-radius:var(--radius);padding:18px 20px;color:inherit;text-decoration:none;transition:transform .15s ease,border-color .15s ease}.unit-card:hover{transform:translateY(-3px);border-color:var(--color-primary)}.unit-emoji{font-size:2em}.unit-number{color:#7a8ba3;font-size:.85em}.unit-title{font-size:1.15em;font-weight:700;color:var(--color-primary-dark)}.unit-badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:8px}.badge{padding:1px 12px;border-radius:999px;font-size:.8em;font-weight:700}.badge-visited{background:#eefaf2;color:var(--color-correct);border:1px solid var(--color-correct)}.badge-quiz{background:#fff8e6;color:#a06d00;border:1px solid var(--color-accent)}.widget{background:var(--color-surface);border:2px solid var(--color-line);border-radius:var(--radius);padding:18px 20px;margin:1.8em 0}.widget button{font:inherit}.widget h3{margin-top:.4em}.bit-row{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}.bit-bulb{display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 10px;border:2px solid var(--color-line);border-radius:12px;background:#f7fafc;cursor:pointer}.bit-bulb .bulb-face{font-size:1.6em;filter:grayscale(1) opacity(.4)}.bit-bulb.on{border-color:var(--color-accent);background:#fff8e6}.bit-bulb.on .bulb-face{filter:none}.bit-bulb .bit-value{font-weight:700;font-size:1.1em}.bit-bulb.on .bit-value{color:#a06d00}.bit-bulb .bit-weight{font-size:.75em;color:#7a8ba3}.bit-sum{text-align:center;color:var(--color-primary-dark)}.bit-result{text-align:center;font-weight:700;font-size:1.1em}.radix-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}.radix-field{display:flex;flex-direction:column;gap:4px;font-weight:700}.radix-input{font:inherit;font-family:Consolas,Menlo,monospace;font-size:1.2em;padding:8px 12px;border:2px solid var(--color-line);border-radius:10px}.radix-input:focus{outline:none;border-color:var(--color-primary)}.radix-input.invalid{border-color:var(--color-wrong);background:#fdeef0}.radix-hint{color:#7a8ba3;font-size:.9em}.radix-details summary{cursor:pointer;font-weight:700;color:var(--color-primary-dark)}.radix-steps{background:#f4f8fd;border-radius:10px;padding:12px 18px;margin-top:8px}.steps-title{font-weight:700;margin:.8em 0 .2em;color:var(--color-primary-dark)}.step-line{margin:.1em 0;font-family:Consolas,Menlo,monospace}.step-answer{font-weight:700;color:var(--color-correct)}.flow-svg{width:100%;height:auto}.flow-edge{stroke:#9fb8d6;stroke-width:3}.flow-edge.control{stroke:#d3b06e;stroke-dasharray:6 6;stroke-width:2}.device-box rect{fill:var(--color-surface);stroke:var(--color-primary);stroke-width:2.5}.device-box.active rect{stroke:var(--color-accent);stroke-width:4;fill:#fff8e6}.device-label{text-anchor:middle;dominant-baseline:central;font-size:18px;font-weight:700;fill:var(--color-ink)}.flow-token circle{fill:var(--color-accent);stroke:#c07f00;stroke-width:2}.flow-token .token-label{text-anchor:middle;dominant-baseline:central;font-size:14px}.flow-controls{display:flex;align-items:center;gap:12px;margin-top:10px}.flow-controls button{padding:8px 18px;border:2px solid var(--color-primary);border-radius:999px;background:var(--color-surface);color:var(--color-primary-dark);font-weight:700;cursor:pointer}.flow-controls button:disabled{opacity:.4;cursor:default}.flow-counter{color:#7a8ba3}.flow-legend{text-align:center;color:#61748e;font-size:.9em;margin:4px 0 0}.flow-note{background:#f4f8fd;border-radius:10px;padding:10px 16px;min-height:2.6em}.pipe-rows{display:flex;flex-direction:column;gap:6px}.pipe-row{display:grid;grid-template-columns:.9fr auto 1fr auto 1.7fr;align-items:center;gap:10px;padding:6px 10px;border-radius:10px}.pipe-rows.no-asm .pipe-row{grid-template-columns:1fr auto 1.4fr}.pipe-row.pipe-header{padding-bottom:0;font-size:.85em;font-weight:700;color:#61748e}.pipe-row.current{background:#fff8e6;outline:2px solid var(--color-accent)}.pipe-source{background:#eef2f8}.pipe-arrow{color:#7a8ba3}.pipe-asm{background:#eefaf2;color:#eefaf2;transition:color .5s ease}.pipe-asm.revealed{color:#1d6b40}.pipe-machine{background:#1f2a3a;color:#1f2a3a;font-size:.85em;letter-spacing:1px;transition:color .5s ease}.pipe-machine.revealed{color:#7ef29b}.pipe-output{background:#fff8e6;border:1px solid var(--color-accent);border-radius:999px;padding:2px 14px;font-family:Consolas,Menlo,monospace;font-weight:700}.pipe-controls{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}.pipe-controls button{padding:8px 18px;border:2px solid var(--color-primary);border-radius:999px;background:var(--color-surface);color:var(--color-primary-dark);font-weight:700;cursor:pointer}.pipe-controls button:disabled{opacity:.4;cursor:default}.pipe-note{background:#f4f8fd;border-radius:10px;padding:10px 16px;min-height:2.6em}.pipe-state{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.state-label{font-weight:700;color:var(--color-primary-dark)}.state-chip{background:var(--color-primary-soft);border-radius:999px;padding:2px 14px;font-family:Consolas,Menlo,monospace}.sb-svg{max-width:420px;width:100%;height:auto;display:block}.sb-bg{fill:#fdfdfd;stroke:var(--color-line)}.sb-bar{fill:#1f2a3a}.sb-module-frame{fill:none;stroke:#9fb8d6}.sb-bit{text-anchor:middle;font-size:12px;fill:#61748e;font-family:Consolas,Menlo,monospace}.sb-digit{text-anchor:middle;font-size:18px;font-weight:700;fill:var(--color-primary-dark)}.sb-hint{color:#7a8ba3;font-size:.9em}.sb-input{font:inherit;font-family:Consolas,Menlo,monospace;font-size:1.2em;padding:8px 12px;border:2px solid var(--color-line);border-radius:10px;width:8em}.sb-controls{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:10px}.sb-controls button{padding:8px 18px;border:2px solid var(--color-primary);border-radius:999px;background:var(--color-surface);color:var(--color-primary-dark);font-weight:700;cursor:pointer}.sb-output{margin:10px 0}.sb-choices{display:flex;flex-wrap:wrap;gap:10px}.sb-quiz{border-top:2px dashed var(--color-line);margin-top:18px;padding-top:6px}.table-figure{margin:1.6em 0}.table-scroll{overflow-x:auto}.content-table{border-collapse:collapse;margin:0 auto}.content-table th,.content-table td{border:1px solid var(--color-line);padding:4px 16px;text-align:center;white-space:nowrap}.content-table th{background:var(--color-primary-soft)}.table-figure figcaption{text-align:center;margin-top:8px;color:#61748e;font-size:.9em}.ean-barcode-area{position:sticky;top:8px;z-index:5;background:var(--color-surface);border:2px solid var(--color-line);border-radius:10px;padding:4px 8px;margin-bottom:12px}.ean-barcode-area .ean-svg{margin:4px 0}.ean-stepnav{display:flex;flex-wrap:wrap;gap:8px}.ean-stepnav button{padding:6px 14px;border:2px solid var(--color-line);border-radius:999px;background:var(--color-surface);cursor:pointer;font-size:.9em}.ean-stepnav button.current{border-color:var(--color-primary);background:var(--color-primary);color:#fff;font-weight:700}.ean-panel{margin-top:14px}.ean-lead{background:#f4f8fd;border-radius:10px;padding:10px 16px}.ean-svg{width:100%;height:auto;display:block;margin:12px 0}.ean-bg{fill:#fdfdfd;stroke:var(--color-line)}.ean-bar{fill:#1f2a3a}.ean-digit{text-anchor:middle;font-size:13px;font-weight:700;fill:var(--color-ink);font-family:Consolas,Menlo,monospace}.ean-zone{fill:transparent;cursor:pointer}.ean-zone:hover{fill:#f6a62340}.ean-zone.found{fill:#f6a62366;stroke:var(--color-accent);stroke-width:2}.ean-group-overlay{cursor:pointer;stroke:none}.ean-group-overlay.tone-0{fill:#2b6cb059}.ean-group-overlay.tone-1{fill:#2f9e6359}.ean-group-overlay:hover{fill:#f6a62373}.ean-group-overlay.selected{fill:#f6a6238c;stroke:var(--color-accent);stroke-width:2}.ean-zoom{background:#f4f8fd;border-radius:10px;padding:12px 18px}.ean-zoom-title{font-weight:700;color:var(--color-primary-dark)}.ean-zoom-note{font-weight:700;color:var(--color-correct)}.ean-bits{max-width:280px;width:100%;height:auto;display:block}.ean-cell{stroke:#9fb8d6}.ean-cell.black{fill:#1f2a3a}.ean-cell.white{fill:#fff}.ean-bit-label{text-anchor:middle;font-size:16px;font-weight:700;fill:var(--color-ink);font-family:Consolas,Menlo,monospace}.ean-quiz{margin:12px 0}.ean-question{font-weight:700}.ean-choices{display:flex;flex-wrap:wrap;gap:10px}.ean-table-scroll{overflow-x:auto;margin:12px 0}.ean-table{border-collapse:collapse;font-family:Consolas,Menlo,monospace;font-size:.9em}.ean-table th,.ean-table td{border:1px solid var(--color-line);padding:3px 12px;text-align:center;white-space:nowrap}.ean-table th{background:var(--color-primary-soft)}.ean-product{color:var(--color-wrong);font-weight:700}.ean-panel-nav{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.ean-panel-nav button,.ean-free-controls button{padding:8px 18px;border:2px solid var(--color-primary);border-radius:999px;background:var(--color-surface);color:var(--color-primary-dark);font-weight:700;cursor:pointer}.ean-input{font:inherit;font-family:Consolas,Menlo,monospace;font-size:1.1em;padding:8px 12px;border:2px solid var(--color-line);border-radius:10px;width:12em;max-width:100%}.ean-free-controls{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.parity-row{display:flex;flex-wrap:wrap;gap:8px}.parity-chip{padding:2px 14px;border-radius:999px;font-weight:700}.parity-L{background:var(--color-primary-soft);color:var(--color-primary-dark)}.parity-G{background:#eefaf2;color:var(--color-correct)}.parity-sequence{font-family:Consolas,Menlo,monospace;font-weight:700;font-size:1.1em}#test-results{font-family:Consolas,Menlo,monospace}@media(max-width:600px){body{font-size:15px}#content{padding:16px 14px 32px}.pipe-row{grid-template-columns:1fr;gap:2px}.pipe-arrow{display:none}}