@charset "UTF-8";:root{--color-text: #1f2328;--color-text-muted: #59636e;--color-bg: #f6f8fa;--color-surface: #ffffff;--color-border: #d0d7de;--color-accent: #d94a1f;--color-danger: #c92a2a;--color-ok: #1a7f37;--color-warn-bg: #fff8e1;--color-warn-border: #f0c36d;--radius: 8px}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--color-bg);color:var(--color-text);font-family:-apple-system,BlinkMacSystemFont,Hiragino Sans,Noto Sans JP,Yu Gothic,sans-serif;font-size:15px;line-height:1.7}a{color:#0969da}h1{font-size:1.5rem;margin:0 0 8px}h2{font-size:1.125rem;margin:0 0 12px}.c-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:20px;margin-bottom:20px}.c-button{appearance:none;border:1px solid var(--color-border);background:var(--color-surface);color:var(--color-text);border-radius:6px;padding:8px 16px;font-size:.95rem;cursor:pointer}.c-button:hover:not(:disabled){background:#f3f4f6}.c-button:disabled{opacity:.55;cursor:not-allowed}.c-button--primary{background:var(--color-accent);border-color:var(--color-accent);color:#fff}.c-button--primary:hover:not(:disabled){background:#bf3f18}.c-note{color:var(--color-text-muted);font-size:.875rem}