:root{--forest-900: #0a3d30;--forest-800: #0d5c48;--forest-700: #1a7f66;--forest-600: #2a9d82;--forest-100: #e8f5f1;--forest-50: #f4faf8;--cream: #faf8f5;--cream-warm: #f5f0e8;--text-primary: #1c1917;--text-secondary: #57534e;--text-muted: #a8a29e;--border: #e7e5e4;--border-light: #f0eeeb;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .04);--shadow: 0 4px 6px -1px rgb(0 0 0 / .05), 0 2px 4px -2px rgb(0 0 0 / .04);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .06), 0 4px 6px -4px rgb(0 0 0 / .04);--radius: 12px;--radius-sm: 8px;--font-display: "Playfair Display", Georgia, serif;--font-mono: "JetBrains Mono", "SF Mono", Monaco, monospace;--font-body: "JetBrains Mono", system-ui, sans-serif}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);font-size:15px;line-height:1.6;color:var(--text-primary);background:var(--cream);-webkit-font-smoothing:antialiased}.container{max-width:1200px;margin:0 auto;padding:0 24px}.site-header{background:var(--forest-900);border-bottom:1px solid rgba(255,255,255,.06)}.logo{display:inline-flex;align-items:center;gap:10px;padding:16px 0;color:var(--forest-100);font-family:var(--font-display);font-size:18px;font-weight:600;text-decoration:none;letter-spacing:-.01em}.logo-icon{width:22px;height:22px;color:var(--forest-600);flex-shrink:0}.hero{background:linear-gradient(180deg,var(--forest-900) 0%,var(--forest-800) 100%);color:var(--forest-100);padding:48px 0 56px;text-align:center}.hero h1{font-family:var(--font-display);font-size:clamp(1.8rem,4vw,2.6rem);font-weight:700;line-height:1.2;margin-bottom:16px;letter-spacing:-.02em}.hero h1 span{color:var(--forest-600)}.hero p{font-size:16px;color:#e8f5f1bf;max-width:640px;margin:0 auto;line-height:1.6}.tool-wrapper{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:-28px;margin-bottom:64px}@media(max-width:860px){.tool-wrapper{grid-template-columns:1fr;margin-top:-20px}}.editor-col,.preview-col{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow-lg);border:1px solid var(--border);overflow:hidden;display:flex;flex-direction:column;min-height:520px}.col-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--forest-50);border-bottom:1px solid var(--border-light);gap:12px;flex-wrap:wrap}.col-label{font-family:var(--font-mono);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--forest-800)}.icon-btn{background:none;border:none;cursor:pointer;padding:6px;border-radius:var(--radius-sm);color:var(--text-muted);display:inline-flex;align-items:center;justify-content:center;transition:all .15s}.icon-btn:hover{background:var(--border-light);color:var(--text-secondary)}.toolbar{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.toolbar-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-sm);border:1px solid var(--border);background:#fff;color:var(--text-secondary);font-family:var(--font-mono);font-size:12px;font-weight:500;cursor:pointer;transition:all .15s}.toolbar-btn:hover{border-color:var(--forest-700);color:var(--forest-800);background:var(--forest-50)}.toggle{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:var(--radius-sm);border:1px solid var(--border);background:#fff;color:var(--text-secondary);font-family:var(--font-mono);font-size:12px;font-weight:500;cursor:pointer;user-select:none;transition:all .15s}.toggle:hover{border-color:var(--forest-700)}.toggle input[type=checkbox]{accent-color:var(--forest-800);width:14px;height:14px;cursor:pointer}.editor-textarea{flex:1;width:100%;padding:16px;border:none;outline:none;resize:none;font-family:var(--font-mono);font-size:14px;line-height:1.7;color:var(--text-primary);background:#fff;min-height:360px}.editor-textarea::placeholder{color:var(--text-muted)}.stats-row{display:flex;align-items:center;gap:8px;padding:10px 16px;background:var(--cream);border-top:1px solid var(--border-light);font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}.stat-sep{color:var(--border)}.preview-pane,.raw-html-pane{flex:1;padding:20px 24px;overflow-y:auto;background:#fff;min-height:360px}.raw-html-pane{background:var(--forest-900)}.raw-html-pane pre{font-family:var(--font-mono);font-size:13px;line-height:1.7;color:#d1d5db;white-space:pre-wrap;word-break:break-word;margin:0;background:transparent;padding:0}.preview-tabs{display:flex;border-top:1px solid var(--border-light);background:var(--cream)}.preview-tab{flex:1;padding:10px;border:none;background:transparent;font-family:var(--font-mono);font-size:12px;font-weight:500;color:var(--text-muted);cursor:pointer;transition:all .15s;border-bottom:2px solid transparent}.preview-tab:hover{color:var(--text-secondary)}.preview-tab.active{color:var(--forest-800);border-bottom-color:var(--forest-700);background:#fff}.preview-pane h1,.preview-pane h2,.preview-pane h3,.preview-pane h4,.preview-pane h5,.preview-pane h6{font-family:var(--font-display);font-weight:700;line-height:1.3;margin-top:1.4em;margin-bottom:.5em;color:var(--forest-900)}.preview-pane h1{font-size:1.7em;border-bottom:1px solid var(--border);padding-bottom:.3em;margin-top:0}.preview-pane h2{font-size:1.4em;border-bottom:1px solid var(--border-light);padding-bottom:.25em}.preview-pane h3{font-size:1.15em}.preview-pane h4{font-size:1em}.preview-pane p{margin-bottom:.9em;color:var(--text-primary)}.preview-pane a{color:var(--forest-800);text-decoration:none;border-bottom:1px solid var(--forest-600)}.preview-pane a:hover{border-bottom-color:var(--forest-800)}.preview-pane strong{font-weight:700;color:var(--forest-900)}.preview-pane em{font-style:italic}.preview-pane code{font-family:var(--font-mono);font-size:.88em;background:var(--forest-50);padding:2px 6px;border-radius:4px;color:var(--forest-800)}.preview-pane pre{background:#0f1f1b;color:#e8f5f1;padding:16px;border-radius:var(--radius-sm);overflow-x:auto;margin:.8em 0}.preview-pane pre code{background:none;padding:0;color:inherit;font-size:.9em}.preview-pane ul,.preview-pane ol{margin:.6em 0;padding-left:1.6em}.preview-pane li{margin-bottom:.3em}.preview-pane blockquote{border-left:3px solid var(--forest-700);margin:1em 0;padding:.4em 0 .4em 16px;color:var(--text-secondary);font-style:italic;background:var(--forest-50);border-radius:0 var(--radius-sm) var(--radius-sm) 0}.preview-pane hr{border:0;border-top:1px solid var(--border);margin:1.5em 0}.preview-pane table{border-collapse:collapse;width:100%;margin:1em 0;font-size:.95em}.preview-pane th,.preview-pane td{border:1px solid var(--border);padding:8px 12px;text-align:left}.preview-pane th{background:var(--forest-50);font-weight:600;color:var(--forest-900)}.preview-pane tr:nth-child(2n){background:var(--cream)}.preview-pane img{max-width:100%;height:auto;border-radius:var(--radius-sm)}.seo-content{max-width:760px;margin:0 auto 64px}.seo-content h2{font-family:var(--font-display);font-size:1.5rem;font-weight:700;color:var(--forest-900);margin-top:48px;margin-bottom:16px}.seo-content p{margin-bottom:14px;color:var(--text-secondary);line-height:1.7}.seo-content ul{margin:14px 0;padding-left:1.4em}.seo-content li{margin-bottom:10px;color:var(--text-secondary);line-height:1.6}.seo-content code{font-family:var(--font-mono);font-size:.9em;background:var(--forest-50);padding:2px 6px;border-radius:4px;color:var(--forest-800)}.faq{margin-top:20px}.faq-item{background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px 24px;margin-bottom:12px}.faq-item h3{font-family:var(--font-display);font-size:1.05rem;font-weight:600;color:var(--forest-900);margin-bottom:8px}.faq-item p{color:var(--text-secondary);line-height:1.6;margin:0}.site-footer{border-top:1px solid var(--border);background:var(--cream-warm);padding:28px 0;text-align:center}.site-footer p{font-size:13px;color:var(--text-muted);line-height:1.7}.site-footer a{color:var(--forest-800);text-decoration:none;border-bottom:1px solid transparent;transition:border-color .15s}.site-footer a:hover{border-bottom-color:var(--forest-600)}