:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;padding:0;min-width:320px;min-height:100vh}#root{width:100%;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}.app{min-height:100vh;background:linear-gradient(135deg,#2c3e50,#34495e,#2c3e50);font-family:SF Pro Display,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;padding:20px;color:#333}.header{text-align:center;color:#fff;margin-bottom:40px}.header h1{font-size:2.8rem;margin-bottom:10px;text-shadow:0 2px 8px rgba(0,0,0,.3);font-weight:700}.header p{font-size:1.1rem;opacity:.9;font-weight:300}.header-actions{margin-top:15px}.stats-btn{background:#fff3;color:#fff;border:1px solid rgba(255,255,255,.3);padding:8px 16px;border-radius:8px;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .3s ease}.stats-btn:hover{background:#ffffff4d;transform:translateY(-1px)}.main{max-width:1200px;margin:0 auto;width:100%}.stats-container{background:#fff;padding:30px;border-radius:20px;box-shadow:0 20px 40px #0000001a;margin-bottom:30px;animation:slideIn .5s ease;width:100%}.stats-container h2{text-align:center;color:#2c3e50;margin-bottom:25px;font-size:1.8rem;font-weight:700}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:25px}.stat-item{background:linear-gradient(135deg,#f8fafc,#e2e8f0);padding:20px;border-radius:12px;text-align:center;border:1px solid #e2e8f0}.stat-item h3{color:#64748b;font-size:.9rem;font-weight:600;margin-bottom:10px;text-transform:uppercase;letter-spacing:.5px}.stat-value{color:#1e293b;font-size:2rem;font-weight:700;line-height:1}.system-health{background:#f1f5f9;padding:15px;border-radius:10px;text-align:center}.system-health h3{color:#475569;font-size:1rem;margin-bottom:10px}.health-status{font-size:1.1rem;font-weight:600;padding:5px 10px;border-radius:6px}.health-status.ok{color:#059669;background:#d1fae5}.health-status.error{color:#dc2626;background:#fee2e2}.form-container{background:#fff;padding:40px;border-radius:20px;box-shadow:0 20px 40px #0000001a;margin-bottom:30px;width:100%;max-width:600px;margin-left:auto;margin-right:auto}.signature-form{display:flex;flex-direction:column;gap:25px}.form-group{display:flex;flex-direction:column}.form-group label{font-weight:600;margin-bottom:8px;color:#2c3e50;display:flex;align-items:center;justify-content:space-between;font-size:1.1rem}.button-group{display:flex;gap:10px}.generate-btn{border:none;padding:6px 12px;border-radius:8px;cursor:pointer;font-size:.85rem;font-weight:600;transition:all .3s ease}.generate-btn.dummy{background:#e74c3c;color:#fff}.generate-btn.dummy:hover{background:#c0392b;transform:translateY(-1px)}.generate-btn.random{background:#27ae60;color:#fff}.generate-btn.random:hover{background:#229954;transform:translateY(-1px)}.hash-input{font-family:SF Mono,Monaco,Consolas,monospace;font-size:.9rem;letter-spacing:1px}input{padding:15px;border:2px solid #ecf0f1;border-radius:12px;font-size:1rem;transition:all .3s ease;background:#fafafa}input:focus{outline:none;border-color:#3498db;background:#fff;box-shadow:0 0 0 3px #3498db1a}.input-info{font-size:.8rem;color:#7f8c8d;margin-top:5px;text-align:right}.error-message{background:linear-gradient(135deg,#ffebee,#ffcdd2);color:#c62828;padding:15px;border-radius:12px;border-left:4px solid #e53935;font-weight:500}.submit-btn{background:linear-gradient(135deg,#3498db,#2980b9);color:#fff;border:none;padding:18px 35px;border-radius:12px;font-size:1.2rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;gap:10px}.submit-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #3498db4d}.submit-btn:disabled{opacity:.7;cursor:not-allowed;transform:none}.spinner{width:18px;height:18px;border:2px solid transparent;border-top:2px solid white;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.result-container{background:#fff;padding:40px;border-radius:20px;box-shadow:0 20px 40px #0000001a;animation:slideIn .5s ease;width:100%}@keyframes slideIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.result-container h2{text-align:center;color:#2c3e50;margin-bottom:30px;font-size:2rem;font-weight:700}.result-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:25px;margin-bottom:30px}.result-item{background:#f8fafc;padding:25px;border-radius:15px;border:1px solid #e2e8f0;transition:transform .3s ease}.result-item:hover{transform:translateY(-2px)}.result-item.highlight{background:linear-gradient(135deg,#e8f5e8,#f0f8f0);border-color:#27ae60}.result-item h3{color:#2c3e50;margin-bottom:15px;display:flex;align-items:center;justify-content:space-between;font-size:1.2rem;font-weight:600}.copy-btn{background:none;border:none;cursor:pointer;font-size:1.3rem;opacity:.6;transition:all .3s ease;padding:5px}.copy-btn:hover{opacity:1;transform:scale(1.1)}.hex-display{font-family:SF Mono,Monaco,Consolas,monospace;background:#fff;padding:15px;border-radius:10px;border:1px solid #e2e8f0;word-break:break-all;font-size:.85rem;line-height:1.6;max-height:150px;overflow-y:auto;color:#2c3e50;letter-spacing:.5px}.hex-display.small{font-size:.8rem;max-height:80px}.hex-info{font-size:.8rem;color:#7f8c8d;margin-top:8px;font-weight:500}.info-list{display:flex;flex-direction:column;gap:12px;font-size:.95rem}.info-list div{padding:8px 0;border-bottom:1px solid #ecf0f1;display:flex;justify-content:space-between;align-items:center}.info-list div:last-child{border-bottom:none}.learning-section{background:linear-gradient(135deg,#e3f2fd,#f3e5f5);padding:25px;border-radius:15px;border:1px solid #bbdefb;margin-top:20px}.learning-section h3{color:#1976d2;margin-bottom:15px;font-size:1.3rem;font-weight:600}.learning-section ul{padding-left:20px;line-height:1.8}.learning-section li{margin-bottom:10px;color:#424242;font-size:.95rem}.learning-section li strong{color:#1976d2}.email-notice{background:linear-gradient(135deg,#e0f2fe,#f3e5f5);padding:25px;border-radius:15px;border:1px solid #81d4fa;margin-top:20px}.email-notice h3{color:#0277bd;margin-bottom:15px;font-size:1.3rem;font-weight:600}.notice-content{color:#424242}.notice-content p{margin-bottom:10px;line-height:1.6}.notice-content strong{color:#0277bd}.notice-content ul{padding-left:20px;margin-top:10px}.notice-content li{margin-bottom:8px;color:#424242;font-size:.95rem}@media (max-width: 768px){.app{padding:15px}.header h1{font-size:2.2rem}.form-container,.result-container,.stats-container{padding:25px;margin-left:auto;margin-right:auto;width:100%}.result-grid{grid-template-columns:1fr}.form-group label{flex-direction:column;align-items:flex-start;gap:5px}.main{width:100%;max-width:none}}.landing-page{min-height:100vh;--lp-primary: #2563eb;--lp-text: #1f2937;--lp-gray: #6b7280;--lp-bg: #f8fafc;--lp-card: #ffffff;--lp-border: #e5e7eb;background-color:var(--lp-bg);background-image:radial-gradient(circle at top,rgba(37,99,235,.08),transparent 55%),linear-gradient(180deg,rgba(15,23,42,.04),transparent 240px);font-family:Space Grotesk,IBM Plex Sans,BIZ UDPGothic,Noto Sans JP,Hiragino Kaku Gothic ProN,Yu Gothic,sans-serif;color:var(--lp-text)}.lp-container{max-width:960px;margin:0 auto;padding:0 20px}.lp-hero-header{padding:96px 20px 72px;text-align:center}.lp-eyebrow{font-size:.85rem;letter-spacing:.18em;text-transform:uppercase;color:var(--lp-gray);margin-bottom:16px}.lp-hero-title{font-size:3rem;font-weight:700;margin:0 0 16px;opacity:0;animation:lpFadeUp .8s ease forwards;animation-delay:.05s}.lp-hero-subtitle{font-size:1.1rem;color:var(--lp-gray);max-width:680px;margin:0 auto 32px;opacity:0;animation:lpFadeUp .8s ease forwards;animation-delay:.15s}.lp-cta-button{display:inline-block;padding:14px 32px;font-size:1rem;font-weight:600;background:var(--lp-primary);color:#fff;border-radius:12px;text-decoration:none;box-shadow:0 12px 24px #2563eb33;transition:transform .2s ease,box-shadow .2s ease;opacity:0;animation:lpFadeUp .8s ease forwards;animation-delay:.25s}.lp-cta-button:hover{transform:translateY(-2px);box-shadow:0 16px 32px #2563eb4d}.lp-main{padding:0 0 80px}.lp-section{margin:72px 0}.lp-section-title{font-size:2rem;font-weight:700;margin-bottom:24px;color:var(--lp-text)}.lp-card{background:var(--lp-card);border:1px solid var(--lp-border);border-radius:16px;padding:28px;box-shadow:0 10px 24px #0f172a0f}.lp-card-muted{background:linear-gradient(135deg,#2563eb0f,#0f172a05)}.lp-list{margin:20px 0 0;padding-left:20px;color:var(--lp-gray)}.lp-list li{margin-bottom:10px}.lp-link{display:inline-block;margin-top:16px;color:var(--lp-primary);font-weight:600;text-decoration:none}.lp-link:hover{text-decoration:underline}.lp-footer{text-align:center;padding:40px 20px 60px;color:var(--lp-gray);font-size:.9rem}@keyframes lpFadeUp{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}@media (prefers-reduced-motion: reduce){.lp-hero-title,.lp-hero-subtitle,.lp-cta-button{animation:none;opacity:1}}@media (max-width: 768px){.lp-hero-header{padding:72px 20px 56px}.lp-hero-title{font-size:2.2rem}.lp-hero-subtitle{font-size:1rem}.lp-section-title{font-size:1.6rem}.lp-card{padding:22px}}