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h1{font-size:3rem;margin-bottom:1rem;font-weight:700;color:#2d2d2d;display:flex;align-items:center;justify-content:center;gap:1rem;line-height:1.2}.home-header h1 svg{font-size:3rem;color:#ec6c00}.home-subtitle{font-size:1.5rem;margin-bottom:1rem;color:#666;font-weight:600}.home-description{font-size:1rem;color:#666;line-height:1.6;max-width:600px;margin:0 auto}.tools-section{margin-bottom:4rem}.tools-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem;margin-bottom:3rem}.tool-card{background:#fff;border-radius:20px;padding:0;text-decoration:none;color:inherit;box-shadow:0 2px 8px #00000014;transition:all .3s ease;display:flex;flex-direction:column;overflow:hidden}.tool-card:hover{transform:translateY(-8px);box-shadow:0 8px 24px #0000001f}.tool-card-image{width:100%;padding:2rem 2rem 0;display:flex;align-items:center;justify-content:center;transition:all .3s}.tool-icon{width:80px;height:80px;display:flex;align-items:center;justify-content:center;border-radius:50%;font-size:3.5rem;color:#fff;transition:all .3s}.tool-card:nth-child(10n+1) .tool-icon{background:linear-gradient(135deg,#ec6c00,#ff8c00)}.tool-card:nth-child(10n+2) .tool-icon{background:linear-gradient(135deg,#ffe900,#ffc107)}.tool-card:nth-child(10n+3) .tool-icon{background:linear-gradient(135deg,#004097,#06c)}.tool-card:nth-child(10n+4) .tool-icon{background:linear-gradient(135deg,#e91e63,#c2185b)}.tool-card:nth-child(10n+5) .tool-icon{background:linear-gradient(135deg,#9c27b0,#7b1fa2)}.tool-card:nth-child(10n+6) .tool-icon{background:linear-gradient(135deg,#4caf50,#388e3c)}.tool-card:nth-child(10n+7) .tool-icon{background:linear-gradient(135deg,#00bcd4,#0097a7)}.tool-card:nth-child(10n+8) .tool-icon{background:linear-gradient(135deg,#ff5722,#e64a19)}.tool-card:nth-child(10n+9) .tool-icon{background:linear-gradient(135deg,#607d8b,#455a64)}.tool-card:nth-child(10n+10) .tool-icon{background:linear-gradient(135deg,#795548,#5d4037)}.tool-card:hover .tool-icon{transform:scale(1.1) rotate(5deg)}.tool-card-info{padding:1.5rem;background:#fff;display:flex;flex-direction:column;gap:.5rem}.tool-card-tags{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:.5rem}.tool-tag{display:inline-block;padding:.3rem .8rem;border:1px solid #2D2D2D;border-radius:20px;font-size:.85rem;color:#2d2d2d;font-weight:400}.tool-card h3{font-size:1.35rem;margin-bottom:.5rem;color:#2d2d2d;font-weight:600;line-height:1.4}.tool-card p{color:#666;line-height:1.6;margin-bottom:.5rem;font-size:.95rem}.tool-company{color:#999;font-size:.85rem}@media(max-width:1024px){.tools-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.home-header h1{font-size:2.5rem}.home-subtitle{font-size:1.2rem}.tools-grid,.footer-cta{grid-template-columns:1fr}}.bg-circles,.bg-triangles{position:absolute;inset:-10%;z-index:0;pointer-events:none;will-change:transform;transition:transform .1s 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16px;--tool-shadow-light: 0 2px 8px rgba(0, 0, 0, .08);--tool-shadow-medium: 0 4px 16px rgba(0, 0, 0, .12);--tool-shadow-strong: 0 6px 20px rgba(102, 126, 234, .3)}.tool-input,.tool-textarea,.tool-select{width:100%;padding:8px;border:1px solid var(--tool-border);border-radius:5px;font-size:14px;font-family:Noto Sans JP,-apple-system,BlinkMacSystemFont,Segoe UI,Hiragino Sans,Hiragino Kaku Gothic ProN,Meiryo,sans-serif;background:var(--tool-bg-white);color:var(--tool-text-dark);transition:all .3s}.tool-textarea{padding:10px;resize:vertical;min-height:100px}.tool-input:focus,.tool-textarea:focus,.tool-select:focus{border-color:var(--tool-primary);outline:none;box-shadow:0 0 0 3px #667eea1a}.tool-input:hover,.tool-textarea:hover,.tool-select:hover{border-color:var(--tool-primary)}.tool-range{padding:0;background:var(--tool-border);height:6px;border-radius:3px;outline:none;-webkit-appearance:none;width:100%}.tool-range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--tool-primary);cursor:pointer;transition:all .3s}.tool-range::-webkit-slider-thumb:hover{background:var(--tool-primary-hover);transform:scale(1.2)}.tool-range::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--tool-primary);cursor:pointer;border:none}.tool-range::-moz-range-thumb:hover{background:var(--tool-primary-hover)}.tool-btn{padding:10px 20px;border:none;border-radius:5px;font-size:14px;cursor:pointer;transition:all 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20px}.tool-form-group{margin-bottom:20px}.tool-label{display:block;margin-bottom:5px;color:var(--tool-text-medium);font-weight:500;font-size:13px}.tool-range-value{font-size:12px;color:var(--tool-text-light);margin-top:5px;text-align:center}.tool-option{border:2px solid var(--tool-border);border-radius:8px;padding:10px;cursor:pointer;transition:all .3s;background:var(--tool-bg-white)}.tool-option:hover{border-color:var(--tool-primary);transform:translateY(-2px)}.tool-option.active{border-color:var(--tool-primary);background-color:var(--tool-primary-light)}.tool-header-content{display:flex;justify-content:space-between;align-items:flex-start;gap:2rem}.tool-guide-link{display:inline-flex;align-items:center;gap:.5rem;padding:.75rem 1.5rem;background:var(--tool-primary);color:#fff;text-decoration:none;border-radius:var(--tool-radius-sm);font-weight:600;font-size:1rem;transition:all .3s;white-space:nowrap;flex-shrink:0}.tool-guide-link:hover{background:var(--tool-primary-hover);transform:translateY(-2px);box-shadow:var(--tool-shadow-strong)}.tool-guide-link svg{font-size:1.25rem}.tool-page{position:relative;min-height:100vh;background:var(--tool-bg-light);padding:2rem;overflow:hidden}.tool-title{font-size:2rem;color:var(--tool-text-dark);margin:0;font-weight:700;text-align:left}.tool-title svg{font-size:2rem;color:var(--tool-primary)}.tool-error{color:var(--tool-error);font-size:14px;margin-top:5px}@media(max-width:768px){.tool-container{padding:15px}}.flat-icon-tool{position:relative;min-height:100vh;background:var(--tool-bg-light);padding:2rem;overflow:hidden}.tool-container{position:relative;z-index:1;max-width:1200px;margin:0 auto;background:#fff;border-radius:var(--tool-radius-lg);padding:3rem;box-shadow:0 10px 40px #0000001a}.tool-header{text-align:center;color:var(--tool-text-dark);margin-bottom:2rem}.tool-header h1{font-size:2rem;margin-bottom:.75rem;font-weight:700;display:flex;gap:.5rem}.tool-header h1 svg{font-size:2rem;color:#ec6c00}.tool-header p{font-size:1rem;color:var(--tool-text-medium);line-height:1.6}.flat-icon-tool__container{display:grid;grid-template-columns:400px 1fr;gap:2rem;align-items:start}.flat-icon-tool__controls-panel{background:var(--tool-bg-white);border-radius:var(--tool-radius-lg);padding:1.2rem}.flat-icon-tool__control-section{margin-bottom:1.2rem;padding-bottom:1rem;border-bottom:1px solid var(--tool-border)}.flat-icon-tool__control-section:last-child{border-bottom:none}.flat-icon-tool__control-section h2{font-size:.95rem;margin-bottom:.75rem;color:var(--tool-text-dark);display:flex;align-items:center;gap:.4rem;font-weight:600}.flat-icon-tool__control-section h2 svg{font-size:1.1rem;color:var(--tool-primary)}.flat-icon-tool__file-input{width:100%;padding:.6rem;border:2px dashed var(--tool-border);border-radius:var(--tool-radius-sm);cursor:pointer;transition:all .3s;margin-bottom:.5rem;font-size:.85rem;background:var(--tool-bg-white);color:var(--tool-text-dark)}.flat-icon-tool__file-input:hover{border-color:var(--tool-primary)}.flat-icon-tool__file-input:focus{border-color:var(--tool-primary);outline:none;box-shadow:0 0 0 3px #667eea1a}.flat-icon-tool__shape-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:.4rem}.flat-icon-tool__shape-button{display:flex;flex-direction:column;align-items:center;gap:.35rem;padding:.7rem;border:2px solid var(--tool-border);border-radius:var(--tool-radius-sm);background:var(--tool-bg-white);cursor:pointer;transition:all .3s;font-size:.8rem}.flat-icon-tool__shape-button:hover{border-color:var(--tool-primary);transform:translateY(-2px)}.flat-icon-tool__shape-button--active{border-color:var(--tool-primary);background:var(--tool-primary-light)}.flat-icon-tool__shape-button:disabled{opacity:.5;cursor:not-allowed}.flat-icon-tool__shape-button:disabled:hover{border-color:var(--tool-border);transform:none}.flat-icon-tool__shape-preview{width:32px;height:32px;background:var(--tool-primary)}.flat-icon-tool__shape-preview--square{border-radius:0}.flat-icon-tool__shape-preview--rounded{border-radius:6px}.flat-icon-tool__shape-preview--circle{border-radius:50%}.flat-icon-tool__shape-preview--image-ratio{width:40px;height:28px;border-radius:5px}.flat-icon-tool__color-presets{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem;margin-bottom:.75rem}.flat-icon-tool__color-preset{width:80%;aspect-ratio:1;border:2px solid transparent;border-radius:6px;cursor:pointer;transition:all 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input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--tool-primary);cursor:pointer;transition:all .3s}.flat-icon-tool__slider-control input[type=range]::-webkit-slider-thumb:hover{background:var(--tool-primary-hover);transform:scale(1.2)}.flat-icon-tool__slider-control input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--tool-primary);cursor:pointer;border:none}.flat-icon-tool__slider-control input[type=range]::-moz-range-thumb:hover{background:var(--tool-primary-hover)}.flat-icon-tool__toggle-control{padding:1rem;background:#f9f9f9;border-radius:var(--tool-radius-sm);border:1px solid var(--tool-border)}.flat-icon-tool__toggle-control label{display:flex;align-items:center;gap:.75rem;font-size:1rem;color:var(--tool-text-dark);cursor:pointer;margin:0}.flat-icon-tool__toggle-control input[type=checkbox]{width:20px;height:20px;cursor:pointer;accent-color:var(--tool-primary)}.flat-icon-tool__actions{display:flex;gap:.4rem}.flat-icon-tool__btn{flex:1;padding:.6rem 1rem;border:none;border-radius:var(--tool-radius-sm);font-size:.85rem;font-weight:600;cursor:pointer;transition:all .3s;display:flex;align-items:center;justify-content:center;gap:.3rem}.flat-icon-tool__btn--primary{background:var(--tool-primary);color:#fff}.flat-icon-tool__btn--primary:hover:not(:disabled){background:var(--tool-primary-hover);transform:translateY(-2px);box-shadow:var(--tool-shadow-strong)}.flat-icon-tool__btn--primary:disabled{background:#a5b3f0;opacity:.6;cursor:not-allowed}.flat-icon-tool__btn--secondary{background:#f5f5f5;color:var(--tool-text-medium);border:1px solid 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#ec6c004d}.qr-code-tool__progress-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;z-index:1000;display:flex;justify-content:center;align-items:center}.qr-code-tool__progress-content{background-color:#fff;padding:30px;border-radius:10px;text-align:center}.qr-code-tool__progress-bar{width:300px;height:20px;background-color:#f0f0f0;border-radius:10px;overflow:hidden;margin-top:10px}.qr-code-tool__progress-fill{height:100%;background-color:#ec6c00;transition:width .3s;width:0%}@media(max-width:768px){.qr-code-tool__qr-grid,.qr-code-tool .controls{grid-template-columns:1fr}}.qr-code-tool-advanced{position:relative;min-height:100vh;background:#f8f8f8;padding:2rem;overflow:hidden}.qr-code-tool-advanced__subtitle{text-align:center;color:#666;margin-bottom:2rem;font-size:1rem;line-height:1.6}.qr-code-tool-advanced .input-section{margin-bottom:30px}.qr-code-tool-advanced .form-group{margin-bottom:12px}.qr-code-tool-advanced 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#ec6c004d}.qr-code-tool-advanced__progress-modal{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;z-index:1000;display:flex;justify-content:center;align-items:center}.qr-code-tool-advanced__progress-content{background-color:#fff;padding:30px;border-radius:10px;text-align:center}.qr-code-tool-advanced__progress-bar{width:300px;height:20px;background-color:#f0f0f0;border-radius:10px;overflow:hidden;margin-top:10px}.qr-code-tool-advanced__progress-fill{height:100%;background-color:#ec6c00;transition:width .3s;width:0%}@media(max-width:1200px){.qr-code-tool-advanced__design-grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.qr-code-tool-advanced__qr-grid,.qr-code-tool-advanced .controls,.qr-code-tool-advanced__design-grid,.qr-code-tool-advanced__form-row{grid-template-columns:1fr}}.image-aspect-ratio-tool{position:relative;min-height:100vh;padding:2rem;overflow:hidden}.image-aspect-ratio-tool__header{margin-bottom:2rem}.image-aspect-ratio-tool__subtitle{font-size:1.1rem;color:var(--tool-text-medium);margin-top:.5rem;line-height:1.6}.image-aspect-ratio-tool__info-section{background:linear-gradient(135deg,#e3f2fd,#f0f4ff);border:1px solid #2196f3;border-radius:12px;padding:20px 25px;margin-bottom:2rem}.image-aspect-ratio-tool__info-toggle{width:100%;background:none;border:none;padding:0;cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:all .3s}.image-aspect-ratio-tool__info-toggle:hover{opacity:.8}.image-aspect-ratio-tool__info-toggle h3{color:#1976d2;margin:0;font-size:1.1rem;font-weight:600;display:flex;align-items:center;gap:10px}.image-aspect-ratio-tool__info-icon{color:#1976d2;font-size:.9rem;transition:transform 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li:before{content:"✓";color:var(--tool-success);font-weight:700;font-size:1.1rem;flex-shrink:0}.image-aspect-ratio-tool__control-panel{background:var(--tool-bg-light);border-radius:10px;margin-bottom:20px;padding:20px;overflow:hidden}.image-aspect-ratio-tool__controls{display:grid;grid-template-columns:repeat(3,1fr);gap:10px 30px}.image-aspect-ratio-tool__control-column{display:flex;flex-direction:column;gap:20px}.image-aspect-ratio-tool__settings-bar{display:grid;grid-template-columns:1fr 1.5fr 1fr .8fr;gap:16px;align-items:end}.image-aspect-ratio-tool__settings-item{display:flex;flex-direction:column;gap:6px}.image-aspect-ratio-tool__settings-item .tool-label{font-size:.8rem;margin-bottom:0}.image-aspect-ratio-tool__bg-color-row{display:flex;flex-direction:column;gap:8px}.image-aspect-ratio-tool__color-picker-inline{display:flex;align-items:center;gap:8px}.image-aspect-ratio-tool__color-picker-inline 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