:root{--color-bg: #121212;--color-surface: #1e1e1e;--color-surface-hover: #2d2d2d;--color-surface-active: #383838;--color-border: #333333;--color-border-hover: #4d4d4d;--color-primary: #ffffff;--color-on-primary: #121212;--color-primary-hover: #e0e0e0;--color-primary-muted: rgba(255, 255, 255, .1);--color-text: #ffffff;--color-text-secondary: #b0b0b0;--color-text-muted: #808080;--color-success: #3fb950;--color-warning: #d29922;--color-error: #f85149;--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "SF Mono", monospace;--radius-sm: 6px;--radius-md: 8px;--radius-lg: 12px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .5);--shadow-md: 0 3px 12px rgba(0, 0, 0, .6);--sidebar-width: 260px;--header-height: 60px;--transition: .15s ease}[data-theme=light]{--color-bg: #ffffff;--color-surface: #f6f8fa;--color-surface-hover: #eaeef2;--color-surface-active: #e1e4e8;--color-border: #d0d7de;--color-border-hover: #babbbd;--color-primary: #000000;--color-on-primary: #ffffff;--color-primary-hover: #262626;--color-primary-muted: rgba(0, 0, 0, .05);--color-text: #24292f;--color-text-secondary: #57606a;--color-text-muted: #6e7681;--color-success: #1a7f37;--color-warning: #9a6700;--color-error: #cf222e}*,*:before,*:after{margin:0;padding:0;box-sizing:border-box}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);background:var(--color-bg);color:var(--color-text);line-height:1.6;min-height:100vh}a{color:var(--color-primary);text-decoration:none;transition:color var(--transition)}a:hover{color:var(--color-primary-hover)}.app-layout{display:flex;min-height:100vh}.app-sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);position:fixed;top:0;left:0;bottom:0;overflow-y:auto;z-index:100;transition:transform .3s ease;transform:translate(-100%)}.layout-sidebar-open .app-sidebar{transform:translate(0)}.app-main{flex:1;margin-left:0;min-height:100vh;display:flex;flex-direction:column;transition:margin-left .3s ease}@media(min-width:769px){.layout-sidebar-open .app-main{margin-left:var(--sidebar-width)}}.app-header{height:var(--header-height);background:var(--color-surface);border-bottom:1px solid var(--color-border);display:flex;align-items:center;justify-content:space-between;padding:0 24px;position:sticky;top:0;z-index:50}.app-content{flex:1;padding:32px;max-width:100%;width:100%;margin:0 auto}.sidebar-logo{padding:20px 16px 16px;border-bottom:1px solid var(--color-border)}.sidebar-logo h1{font-size:16px;font-weight:600;color:var(--color-text);display:flex;align-items:center;gap:8px}.sidebar-logo span{color:var(--color-primary)}.sidebar-section{padding:12px 0}.sidebar-section-title{font-size:12px;font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.05em;padding:8px 16px;transition:color var(--transition)}.sidebar-section-title:hover{color:var(--color-text-secondary)}.sidebar-link{display:flex;align-items:center;gap:10px;padding:6px 16px;color:var(--color-text-secondary);font-size:14px;font-weight:400;transition:all var(--transition);cursor:pointer;position:relative}.sidebar-link:before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--color-primary);opacity:0;transition:opacity var(--transition)}.sidebar-link:hover{background:var(--color-surface-hover);color:var(--color-text)}.sidebar-link.active{background:var(--color-primary-muted);color:var(--color-primary);font-weight:500}.sidebar-link.active:before{opacity:1}.sidebar-link-icon{font-size:16px;width:20px;text-align:center;flex-shrink:0}.header-title{font-size:16px;font-weight:600}.header-actions{display:flex;align-items:center;gap:12px}.menu-toggle{display:block;background:none;border:none;color:var(--color-text);font-size:24px;cursor:pointer;padding:4px}.textarea-container{position:relative;margin-bottom:24px}.textarea-main{width:100%;min-height:220px;padding:16px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);color:var(--color-text);font-family:var(--font-family);font-size:14px;line-height:1.6;resize:vertical;transition:border-color var(--transition),box-shadow var(--transition)}.textarea-main:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-muted)}.textarea-main::placeholder{color:var(--color-text-muted)}.textarea-actions{position:absolute;top:12px;right:12px;display:flex;gap:6px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));gap:12px;margin-bottom:28px}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:16px;text-align:center;transition:border-color var(--transition),transform var(--transition)}.stat-card:hover{border-color:var(--color-border-hover);transform:translateY(-1px)}.stat-value{font-size:28px;font-weight:700;color:var(--color-primary);line-height:1.2;font-variant-numeric:tabular-nums}.stat-label{font-size:12px;color:var(--color-text-secondary);margin-top:4px;font-weight:500}.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 16px;font-family:var(--font-family);font-size:14px;font-weight:500;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:all var(--transition)}.btn-primary{background:var(--color-primary);color:var(--color-on-primary)}.btn-primary:hover{background:var(--color-primary-hover)}.btn-primary:active{transform:scale(.98)}.btn-ghost{background:transparent;color:var(--color-text-secondary);border:1px solid var(--color-border)}.btn-ghost:hover{background:var(--color-surface-hover);color:var(--color-text);border-color:var(--color-border-hover)}.btn-icon{width:32px;height:32px;padding:0;border-radius:var(--radius-sm);background:var(--color-surface-hover);border:1px solid var(--color-border);color:var(--color-text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--transition);font-size:14px}.btn-icon:hover{background:var(--color-surface-active);color:var(--color-text);border-color:var(--color-border-hover)}.tool-header{margin-bottom:28px}.tool-header h1{font-size:28px;font-weight:700;margin-bottom:6px;letter-spacing:-.02em}.tool-header p{color:var(--color-text-secondary);font-size:14px}.result-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:20px;margin-bottom:16px}.result-card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.result-card-title{font-size:13px;font-weight:600;color:var(--color-text-secondary);text-transform:uppercase;letter-spacing:.05em}.result-content{font-family:var(--font-mono);font-size:13px;line-height:1.7;color:var(--color-text);word-break:break-all;white-space:pre-wrap}.font-list{display:flex;flex-direction:column;gap:10px}.font-item{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:14px 16px;display:flex;align-items:center;justify-content:space-between;transition:border-color var(--transition)}.font-item:hover{border-color:var(--color-border-hover)}.font-item-label{font-size:12px;color:var(--color-text-muted);font-weight:600;min-width:120px}.font-item-text{flex:1;font-size:17px;padding:0 12px;word-break:break-all}.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:24px}.diff-output{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:18px;font-family:var(--font-mono);font-size:13px;line-height:1.7;white-space:pre-wrap;word-break:break-all}.diff-added{background:#3fb95026;color:var(--color-success);padding:1px 3px;border-radius:3px}.diff-removed{background:#f8514926;color:var(--color-error);padding:1px 3px;border-radius:3px;text-decoration:line-through}.select-input,.text-input{padding:8px 12px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-sm);color:var(--color-text);font-family:var(--font-family);font-size:14px;transition:border-color var(--transition)}.select-input:focus,.text-input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px var(--color-primary-muted)}.text-input{width:100%}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:600;color:var(--color-text-secondary);margin-bottom:6px}.form-row{display:flex;gap:12px;align-items:flex-end}.info-section{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:24px;margin-top:32px}.info-section h2{font-size:18px;font-weight:700;margin-bottom:12px}.info-section p{color:var(--color-text-secondary);font-size:14px;line-height:1.7;margin-bottom:10px}.info-section ul{color:var(--color-text-secondary);font-size:14px;line-height:1.8;padding-left:20px}.lang-switcher{display:flex;gap:4px;background:var(--color-surface-hover);border-radius:var(--radius-sm);padding:3px}.lang-btn{padding:5px 12px;font-size:13px;font-weight:600;font-family:var(--font-family);background:transparent;border:none;border-radius:4px;color:var(--color-text-muted);cursor:pointer;transition:all var(--transition)}.lang-btn:hover{color:var(--color-text-secondary)}.lang-btn.active{background:var(--color-primary);color:var(--color-bg)}.app-footer{padding:24px 32px;border-top:1px solid var(--color-border);text-align:center;color:var(--color-text-muted);font-size:13px;margin-top:auto;background:var(--color-surface)}.footer-email{margin-top:8px;font-size:13px}.footer-email a{color:var(--color-text-secondary);text-decoration:none;transition:color var(--transition)}.footer-email a:hover{color:var(--color-primary)}.footer-links{display:flex;justify-content:center;gap:20px;margin-bottom:8px}.copy-toast{position:fixed;bottom:24px;right:24px;background:var(--color-surface);border:1px solid var(--color-border);color:var(--color-text);padding:10px 20px;border-radius:var(--radius-md);font-size:13px;font-weight:500;box-shadow:var(--shadow-md);z-index:1000}@media(min-width:1200px){.desktop-ads-sidebar{display:block!important}}@media(max-width:768px){.app-sidebar{transform:translate(-100%)}.app-sidebar.open{transform:translate(0)}.app-main{margin-left:0!important}.app-content{padding:20px 16px}.menu-toggle{display:block}.stats-grid{grid-template-columns:repeat(2,1fr)}.compare-grid{grid-template-columns:1fr}.form-row{flex-direction:column}.tool-header h1{font-size:24px}.font-item{flex-direction:column;align-items:flex-start;gap:8px}.font-item-label{min-width:auto}.font-item-text{padding:0}}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;z-index:99}.sidebar-overlay.visible{display:block}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--color-border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--color-border-hover)}