@import "https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500;700&family=Inter:wght@400;500;600;700&display=swap";
:root{--primary:#2563eb;--primary-dark:#1d4ed8;--primary-light:#eff6ff;--secondary:#10b981;--secondary-light:#ecfdf5;--accent:#f59e0b;--accent-light:#fffbeb;--danger:#ef4444;--danger-light:#fef2f2;--text-primary:#111827;--text-secondary:#6b7280;--text-muted:#9ca3af;--bg:#f9fafb;--bg-card:#fff;--border:#e5e7eb;--border-focus:#93c5fd;--shadow-sm:0 1px 2px #0000000d;--shadow:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a;--radius:12px;--radius-sm:8px;--radius-lg:16px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text-primary);-webkit-font-smoothing:antialiased;font-family:Noto Sans JP,Inter,system-ui,sans-serif;line-height:1.75}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:900px;margin:0 auto;padding:0 1rem}.page-wrapper{flex-direction:column;min-height:100vh;display:flex}main{flex:1;padding:2rem 0 4rem}.site-header{background:var(--bg-card);border-bottom:1px solid var(--border);z-index:100;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#fffffff2;position:sticky;top:0}.site-header .container{align-items:center;gap:2rem;height:60px;display:flex}.site-logo{color:var(--primary);white-space:nowrap;align-items:center;gap:.5rem;font-size:1.125rem;font-weight:700;display:flex}.site-logo .logo-sub{color:var(--text-secondary);font-size:.75rem;font-weight:400}.site-nav{flex-wrap:wrap;align-items:center;gap:.25rem;display:flex}.nav-link{color:var(--text-secondary);border-radius:var(--radius-sm);white-space:nowrap;padding:.375rem .75rem;font-size:.875rem;transition:all .15s}.nav-link:hover{color:var(--primary);background:var(--primary-light);text-decoration:none}.nav-link.active{color:var(--primary);background:var(--primary-light);font-weight:500}.site-footer{background:var(--text-primary);color:#ffffffb3;padding:2rem 0;font-size:.875rem}.site-footer .container{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;display:flex}.site-footer a{color:#ffffffb3}.site-footer a:hover{color:#fff}.footer-links{gap:1.5rem;display:flex}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden}.card-header{padding:1.5rem 1.5rem 0}.card-body{padding:1.5rem}.page-header{margin-bottom:2rem}.page-header h1{color:var(--text-primary);flex-wrap:wrap;align-items:center;gap:.5rem;font-size:1.75rem;font-weight:700;line-height:1.3;display:flex}.page-header p{color:var(--text-secondary);margin-top:.5rem;font-size:.975rem}.badge{letter-spacing:.025em;border-radius:9999px;align-items:center;padding:.25rem .75rem;font-size:.75rem;font-weight:600;display:inline-flex}.badge-blue{background:var(--primary-light);color:var(--primary)}.badge-green{background:var(--secondary-light);color:#059669}.badge-yellow{background:var(--accent-light);color:#d97706}.badge-purple{color:#7e22ce;background:#f3e8ff}.form-group{margin-bottom:1.25rem}.form-label{color:var(--text-primary);margin-bottom:.375rem;font-size:.875rem;font-weight:600;display:block}.form-label .hint{color:var(--text-secondary);margin-left:.5rem;font-size:.8rem;font-weight:400}.form-input,.form-select,.form-textarea{border:1.5px solid var(--border);border-radius:var(--radius-sm);background:var(--bg-card);width:100%;color:var(--text-primary);outline:none;padding:.625rem .875rem;font-family:inherit;font-size:1rem;transition:border-color .15s,box-shadow .15s}.form-input:focus,.form-select:focus,.form-textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1f}.form-textarea{resize:vertical;min-height:120px}.btn{border-radius:var(--radius-sm);cursor:pointer;white-space:nowrap;border:none;justify-content:center;align-items:center;gap:.5rem;padding:.625rem 1.25rem;font-family:inherit;font-size:.9375rem;font-weight:600;text-decoration:none;transition:all .15s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow);color:#fff;text-decoration:none;transform:translateY(-1px)}.btn-ghost{color:var(--text-secondary);border:1.5px solid var(--border);background:0 0}.btn-ghost:hover{background:var(--bg);color:var(--text-primary);text-decoration:none}.btn-sm{padding:.375rem .875rem;font-size:.8125rem}.btn-copy{background:var(--secondary-light);color:#059669;border:1.5px solid #a7f3d0}.btn-copy:hover{background:#d1fae5;text-decoration:none}.result-box{background:var(--bg);border:1.5px solid var(--border);border-radius:var(--radius-sm);padding:1rem 1.25rem}.result-grid{gap:.75rem;display:grid}.result-item{border-radius:var(--radius-sm);background:var(--bg-card);border:1px solid var(--border);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem;padding:.625rem 1rem;display:flex}.result-item .label{color:var(--text-secondary);font-size:.875rem}.result-item .value{color:var(--primary);font-size:1.125rem;font-weight:700}.result-item .value.over{color:var(--danger)}.result-item .value.ok{color:var(--secondary)}.divider{border:none;border-top:1px solid var(--border);margin:1.5rem 0}.tools-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1rem;display:grid}.tool-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);color:inherit;flex-direction:column;gap:.75rem;padding:1.5rem;text-decoration:none;transition:all .2s;display:flex}.tool-card:hover{border-color:var(--primary);box-shadow:var(--shadow);text-decoration:none;transform:translateY(-2px)}.tool-card .icon{font-size:2rem;line-height:1}.tool-card h2{color:var(--text-primary);font-size:1rem;font-weight:700}.tool-card p{color:var(--text-secondary);flex:1;font-size:.875rem}.tool-card .arrow{color:var(--primary);font-size:.875rem;font-weight:600}.hero{color:#fff;border-radius:0 0 var(--radius-lg)var(--radius-lg);background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 50%,#0ea5e9 100%);margin-bottom:2rem;padding:3rem 0 2.5rem}.hero h1{font-size:2rem;font-weight:700;line-height:1.3}.hero p{opacity:.85;max-width:560px;margin-top:.75rem;font-size:1rem}.alert{border-radius:var(--radius-sm);align-items:flex-start;gap:.625rem;padding:.875rem 1rem;font-size:.875rem;display:flex}.alert-info{background:var(--primary-light);color:#1e40af;border:1px solid #bfdbfe}.alert-success{background:var(--secondary-light);color:#065f46;border:1px solid #a7f3d0}.alert-warning{background:var(--accent-light);color:#92400e;border:1px solid #fde68a}.tab-group{border:1.5px solid var(--border);border-radius:var(--radius-sm);width:fit-content;display:flex;overflow:hidden}.tab-btn{cursor:pointer;color:var(--text-secondary);background:0 0;border:none;padding:.5rem 1rem;font-family:inherit;font-size:.875rem;font-weight:500;transition:all .15s}.tab-btn.active{background:var(--primary);color:#fff}.progress-bar{background:var(--border);border-radius:9999px;height:6px;overflow:hidden}.progress-bar-fill{background:var(--primary);border-radius:9999px;height:100%;transition:width .3s}.progress-bar-fill.over{background:var(--danger)}@media (max-width:640px){.page-header h1{font-size:1.375rem}.hero h1{font-size:1.5rem}.hero{padding:2rem 0 1.5rem}.site-header .container{gap:1rem}.site-footer .container{flex-direction:column;align-items:flex-start}}