.sidebar{width:260px;min-height:100vh;background:var(--sidebar-bg);border-right:1px solid var(--border);display:flex;flex-direction:column;position:sticky;top:0;height:100vh}.sidebar-header{padding:28px 24px 20px;border-bottom:1px solid var(--border)}.logo{display:flex;align-items:center;gap:10px;margin-bottom:4px}.logo-icon{font-size:28px}.logo-text{font-size:20px;font-weight:700;background:linear-gradient(135deg,var(--primary),var(--primary-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.logo-subtitle{font-size:13px;color:var(--text-secondary);margin-top:4px;padding-left:38px}.tool-list{flex:1;padding:12px;display:flex;flex-direction:column;gap:4px}.tool-item{display:flex;align-items:center;gap:12px;width:100%;padding:12px 16px;border-radius:10px;background:transparent;color:var(--text);font-size:15px;font-weight:500;transition:all .2s;text-align:left}.tool-item:hover{background:var(--hover)}.tool-item.active{background:linear-gradient(135deg,#ff6b6b1a,#ff8e531a);color:var(--primary);font-weight:600}.tool-icon{font-size:20px;width:28px;text-align:center}.tool-name{white-space:nowrap}.sidebar-footer{padding:16px 24px;border-top:1px solid var(--border);text-align:center}.sidebar-footer p{font-size:12px;color:var(--text-secondary)}@media(max-width:768px){.sidebar{width:100%;min-height:auto;height:auto;position:relative;border-right:none;border-bottom:1px solid var(--border)}.sidebar-header{padding:16px 20px 12px}.logo-text{font-size:18px}.logo-subtitle{display:none}.tool-list{flex-direction:row;padding:8px 12px;overflow-x:auto;gap:8px}.tool-item{padding:10px 16px;white-space:nowrap;flex-shrink:0}.sidebar-footer{display:none}}.app{display:flex;min-height:100vh}.main-content{flex:1;padding:32px;max-width:900px;margin:0 auto}.tool-header{margin-bottom:28px}.tool-title{font-size:28px;font-weight:700;color:var(--text);margin-bottom:8px}.tool-desc{font-size:15px;color:var(--text-secondary)}.tool-content{background:var(--card-bg);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}.tool-section{margin-bottom:24px}.tool-section:last-child{margin-bottom:0}.tool-label{display:block;font-size:14px;font-weight:600;color:var(--text);margin-bottom:8px}.tool-input{width:100%;padding:12px 16px;border:2px solid var(--border);border-radius:8px;font-size:15px;color:var(--text);transition:border-color .2s,box-shadow .2s;background:#fafafa}.tool-input:focus{border-color:var(--primary);box-shadow:0 0 0 3px #ff6b6b1a;background:#fff}.tool-input::placeholder{color:#b2bec3}textarea.tool-input{resize:vertical;min-height:100px}.tool-btn{padding:12px 24px;border-radius:8px;font-size:15px;font-weight:600;transition:all .2s;display:inline-flex;align-items:center;gap:6px}.tool-btn-primary{background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff}.tool-btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #ff6b6b66}.tool-btn-primary:active{transform:translateY(0)}.tool-btn-secondary{background:var(--hover);color:var(--text);border:1px solid var(--border)}.tool-btn-secondary:hover{background:var(--border)}.tool-btn-group{display:flex;gap:12px;flex-wrap:wrap}.result-box{background:#f8f9fa;border:1px solid var(--border);border-radius:8px;padding:16px;font-size:14px;color:var(--text);word-break:break-all;white-space:pre-wrap;max-height:300px;overflow-y:auto;line-height:1.8}.result-label{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.copy-hint{font-size:12px;color:var(--text-secondary);margin-top:8px}.divider{height:1px;background:var(--border);margin:20px 0}.flex-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.flex-col{display:flex;flex-direction:column;gap:8px}@media(max-width:768px){.app{flex-direction:column}.main-content{padding:20px 16px}.tool-content{padding:20px}.tool-title{font-size:22px}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary: #FF6B6B;--primary-light: #FF8E53;--bg: #f5f7fa;--sidebar-bg: #ffffff;--card-bg: #ffffff;--text: #2d3436;--text-secondary: #636e72;--border: #e9ecef;--hover: #f8f9fa;--shadow: 0 2px 12px rgba(0, 0, 0, .08);--radius: 12px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.6}#root{min-height:100vh}button{cursor:pointer;border:none;outline:none;font-family:inherit}input,textarea{font-family:inherit;outline:none}::selection{background:var(--primary);color:#fff}