:root{font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{margin:0;min-width:320px}button{cursor:pointer;font-family:inherit}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}:root{--primary-color: #1d4ed8;--secondary-color: #f8f9fa;--dark-color: #343a40;--light-color: #ffffff;--border-color: #e2e8f0;--success-color: #38b2ac}body,.sample-root{background-color:var(--secondary-color);color:var(--dark-color);line-height:1.6;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.sample-header{background-color:var(--light-color);box-shadow:0 2px 10px #00000014;padding:.5rem 2rem;position:sticky;top:0;z-index:100}.header-container{max-width:1400px;margin:0 auto;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:2.5rem;padding:0 1rem}.logo-container{display:flex;align-items:center;gap:1rem}.logo-img{width:32px;height:32px;object-fit:contain;border-radius:6px;background:#fff}.logo-text{font-size:1.5rem;font-weight:700;color:var(--dark-color)}nav{justify-self:end}.nav-list{display:flex;list-style:none;gap:2rem}.nav-list a{text-decoration:none;color:var(--dark-color);font-size:1.1rem;font-weight:590;transition:color .3s}.nav-list a:hover{color:var(--primary-color)}.nav-list.nav-right{margin-left:auto;display:flex;justify-content:flex-end}.lang-switcher{margin-left:auto}.lang-switcher select{font-size:1rem;padding:.3rem 1rem;border-radius:6px;border:1px solid var(--border-color);background:#fff;color:var(--dark-color)}.sample-main{max-width:1400px;margin:2rem auto;padding:0 3.5rem}.converter-card{background:none;box-shadow:none;padding:0;margin-bottom:2rem;width:100%;display:grid;grid-template-columns:minmax(0,1.2fr) auto minmax(0,1.2fr);gap:.5rem;min-height:500px;align-items:stretch}.converter-container{flex:1 1 0;display:flex;flex-direction:row;gap:2rem;width:100%;position:relative}.input-section,.preview-section{background-color:var(--light-color);border-radius:10px;box-shadow:0 4px 15px #0000000d;padding:1.5rem;display:flex;flex-direction:column;min-width:0;height:100%;overflow:hidden;position:relative}.section-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding-bottom:.5rem;border-bottom:1px solid var(--border-color)}.section-title{font-size:1.2rem;font-weight:600;color:var(--dark-color)}.error-message{color:#dc2626;font-size:.9rem;margin:-.5rem 0 .5rem;padding:.5rem;background-color:#fef2f2;border-radius:4px;border:1px solid #fee2e2}.markdown-input{width:100%;height:500px;padding:1rem;border:1px solid var(--border-color);border-radius:6px;resize:none;font-size:.95rem;line-height:1.5;outline:none;transition:border-color .3s;background:#fff;box-sizing:border-box}.markdown-input:focus{border-color:var(--primary-color)}.preview-content{height:500px;overflow-y:auto;padding:1rem;border:1px solid var(--border-color);border-radius:6px;background-color:#fafafa;box-sizing:border-box;font-size:15px;line-height:1.6}.format-buttons-vertical{display:flex;flex-direction:column;gap:1rem;align-items:center;justify-content:center;align-self:center;padding:0;height:fit-content;margin-top:50px}.btn-clear,.btn-copy{background-color:transparent;border:1px solid var(--border-color);color:var(--primary-color);padding:.4rem 1rem;border-radius:6px;cursor:pointer;font-weight:500;transition:background .2s}.btn-clear:hover,.btn-copy:hover{background-color:#f1f1f1}.btn-primary{background-color:var(--primary-color);color:#fff;border:none;padding:.6rem 1.2rem;border-radius:6px;font-weight:500;cursor:pointer;transition:background .2s}.btn-primary:hover{background-color:#3a5ad9}.btn-secondary{background-color:#fff;border:1px solid var(--primary-color);color:var(--primary-color);padding:.6rem;border-radius:6px;font-weight:500;cursor:pointer;transition:background .2s}.btn-secondary:hover{background-color:#f0f4ff}.export-card{background:var(--light-color);border-radius:10px;box-shadow:0 4px 15px #0000000d;padding:1.2rem 0;margin-top:4rem;width:100%;display:flex;justify-content:center;position:relative}.export-buttons{display:flex;gap:4rem;justify-content:center}.tips-section{background-color:var(--light-color);border-radius:10px;box-shadow:0 4px 15px #0000000d;padding:1.5rem;margin-top:2rem}.tips-title{font-size:1.2rem;font-weight:600;color:var(--dark-color);margin-bottom:1rem}.tips-list,.sub-list{padding-left:1.5rem}.tips-list li{margin-bottom:.5rem;color:#555;line-height:1.5}.sub-list li{margin-bottom:.5rem;margin-top:.4rem;color:#555;font-size:.9rem;line-height:1.5}.sample-footer{background-color:var(--dark-color);color:var(--light-color);padding:1.5rem 0;margin-top:3rem;text-align:center}.copyright{max-width:1400px;margin:0 auto;color:#adb5bd;font-size:.9rem}.contact-info{margin-top:.3rem;color:#adb5bd;font-size:.8rem}.version-info{margin-top:.3rem;color:#adb5bd;font-size:.7rem}.about-section{padding:4rem 0;margin-top:3rem;text-align:center;background-color:var(--secondary-color)}.about-section h2{color:var(--dark-color);font-size:2.5rem;margin-bottom:2rem}.about-section p{color:#555;line-height:1.6;max-width:800px;margin:0 auto;font-size:1.1rem}code{background-color:#f8f9fa;color:#333;padding:2px 6px;border-radius:4px;font-family:Consolas,Menlo,Monaco,monospace;font-size:.9em}pre{background-color:#f8f9fa;color:#333;padding:16px;border-radius:4px;overflow-x:auto;font-family:Consolas,Menlo,Monaco,monospace;font-size:.9em;line-height:1.5;margin:16px 0}table{border-collapse:collapse;width:100%;margin:16px 0;box-shadow:0 2px 8px #0000001a}th,td{border:1px solid #dee2e6;padding:12px;text-align:left}th{background-color:#f8f9fa;color:#333;font-weight:600}tr:nth-child(2n){background-color:#f8f9fa}tr:hover{background-color:#e9ecef}@media (max-width: 1100px){.sample-main{padding:0 1.5rem}.header-container{padding:0 .5rem}}@media (max-width: 900px){.header-container{grid-template-columns:1fr;gap:1rem}nav{justify-self:center}.lang-switcher{justify-self:center}.converter-card{grid-template-columns:1fr;gap:1.2rem;min-height:unset}.converter-container{flex-direction:column;gap:1.2rem}.format-buttons-vertical{flex-direction:row;justify-content:center;margin-top:0;padding:1rem 0}.input-section,.preview-section{padding:1rem}.export-card{margin-top:3rem}}