*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-primary:#1a73e8;--color-primary-dark:#1557b0;--color-primary-light:#e3f2fd;--color-success:#4caf50;--color-success-light:#e8f5e9;--color-warning:#ff9800;--color-warning-light:#fff8e1;--color-error:#d32f2f;--color-error-light:#ffebee;--color-text:#333;--color-text-secondary:#666;--color-text-muted:#888;--color-background:#f5f5f5;--color-surface:#fff;--color-border:#e0e0e0;--space-xs:0.25rem;--space-sm:0.5rem;--space-md:0.75rem;--space-lg:1rem;--space-xl:1.5rem;--space-2xl:2rem;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--text-xs:0.75rem;--text-sm:0.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--shadow-sm:0 1px 3px rgba(0,0,0,0.08);--shadow-md:0 2px 8px rgba(0,0,0,0.08);--shadow-lg:0 4px 16px rgba(0,0,0,0.12);--shadow-primary:0 4px 12px rgba(26,115,232,0.3);--container-max:800px;--tap-target-min:44px}html{font-size:16px;-webkit-text-size-adjust:100%}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Hiragino Sans,Noto Sans JP,sans-serif;font-size:1rem;line-height:1.6;color:var(--color-text);background-color:var(--color-background);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body,html{max-width:100vw;overflow-x:hidden}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer}img{max-width:100%;height:auto}:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#f1f1f1}::-webkit-scrollbar-thumb{background:#ccc;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#aaa}::selection{background-color:var(--color-primary);color:#fff}@media (max-width:1023px){body{padding-bottom:calc(60px + env(safe-area-inset-bottom, 0px))}}.break-words{overflow-wrap:break-word;word-wrap:break-word;word-break:break-word;-webkit-hyphens:auto;hyphens:auto}.truncate{text-overflow:ellipsis;white-space:nowrap}.overflow-hidden,.truncate{overflow:hidden}.prose-content{overflow-wrap:break-word;word-wrap:break-word}.prose-content code,.prose-content pre{overflow-x:auto;max-width:100%;white-space:pre-wrap;word-break:break-all}.tap-target{min-height:var(--tap-target-min);min-width:var(--tap-target-min)}.page-container{max-width:var(--container-max);margin:0 auto;padding:var(--space-xl) var(--space-lg)}@media (max-width:640px){.page-container{padding:var(--space-lg) var(--space-md)}}.card{background:var(--color-surface);border-radius:var(--radius-lg);padding:var(--space-lg);box-shadow:var(--shadow-md)}.card-compact{padding:var(--space-md)}.section{margin-bottom:var(--space-xl)}.section-title{font-size:var(--text-lg);font-weight:600;color:var(--color-text);margin-bottom:var(--space-lg);padding-left:var(--space-md);border-left:3px solid var(--color-primary)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);padding:var(--space-md) var(--space-lg);font-size:var(--text-sm);font-weight:500;border-radius:var(--radius-md);border:none;cursor:pointer;transition:all .2s ease;min-height:var(--tap-target-min)}.btn-primary{background:var(--color-primary);color:white}.btn-primary:hover{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-primary-light);color:var(--color-primary)}.btn-secondary:hover{background:#d0e4fc}.btn-outline{background:transparent;border:1px solid var(--color-border);color:var(--color-text)}.btn-outline:hover{background:var(--color-background)}.btn-sm{padding:var(--space-sm) var(--space-md);font-size:var(--text-xs);min-height:36px}.btn-lg{padding:var(--space-lg) var(--space-xl);font-size:var(--text-base)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:var(--space-2xl);text-align:center;color:var(--color-text-muted)}.empty-state-icon{font-size:3rem;margin-bottom:var(--space-lg);opacity:.5}.empty-state-title{font-size:var(--text-lg);font-weight:600;color:var(--color-text);margin-bottom:var(--space-sm)}.empty-state-desc{font-size:var(--text-sm);max-width:280px;line-height:1.5}.error-banner{background:var(--color-error-light);border:1px solid #ffcdd2;border-radius:var(--radius-md);color:var(--color-error)}.error-banner,.warning-banner{display:flex;align-items:flex-start;gap:var(--space-md);padding:var(--space-md) var(--space-lg);font-size:var(--text-sm)}.warning-banner{background:var(--color-warning-light);border:1px solid #ffe082;border-radius:var(--radius-md);color:#e65100}.info-banner{display:flex;align-items:flex-start;gap:var(--space-md);padding:var(--space-md) var(--space-lg);background:var(--color-primary-light);border:1px solid #90caf9;border-radius:var(--radius-md);color:var(--color-primary-dark);font-size:var(--text-sm)}.flex-center{justify-content:center}.flex-between,.flex-center{display:flex;align-items:center}.flex-between{justify-content:space-between}.grid-responsive{display:grid;gap:var(--space-lg);grid-template-columns:1fr}@media (min-width:640px){.grid-responsive{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.grid-responsive{grid-template-columns:repeat(3,1fr)}}