*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #0f766e;--primary-hover: #0d9488;--accent: #14b8a6;--accent-light: #ccfbf1;--bg: #f0fdfa;--surface: #ffffff;--border: #d1fae5;--text: #134e4a;--text-muted: #6b7280;--valid: #16a34a;--invalid: #dc2626;--surface-hover: #f9fffe;--radius: 6px;--shadow: 0 1px 3px rgba(0,0,0,.08)}body{font-family:system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:14px}.site-header{background:var(--primary);color:#fff;height:56px;padding:0 24px;display:flex;align-items:center}.header-inner{display:flex;align-items:center;justify-content:space-between;width:100%;max-width:1280px;margin:0 auto}.header-logo{font-size:16px;font-weight:700;letter-spacing:-.3px}.header-link{color:var(--accent-light);font-size:13px;text-decoration:none}.header-link:hover{text-decoration:underline}.tab-bar{background:var(--surface);border-bottom:1px solid var(--border);display:flex;gap:4px;padding:0 24px}.tab-btn{background:none;border:none;border-bottom:2px solid transparent;color:var(--text-muted);cursor:pointer;font-size:13px;padding:12px 16px;transition:color .15s,border-color .15s}.tab-btn:hover{color:var(--primary)}.tab-btn.active{border-bottom-color:var(--primary);color:var(--primary);font-weight:600}.tab-content{max-width:1280px;margin:0 auto;padding:24px}table{width:100%;border-collapse:collapse;background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}th{background:var(--bg);color:var(--text-muted);font-size:11px;font-weight:600;letter-spacing:.5px;padding:10px 14px;text-align:left;text-transform:uppercase}td{border-top:1px solid var(--border);padding:10px 14px;vertical-align:top}tr:hover td{background:var(--surface-hover)}.op-icon{color:var(--primary);display:block}.code-block{background:#0d1117;border-radius:var(--radius);color:#e6edf3;font-family:Cascadia Code,Fira Code,monospace;font-size:12px;line-height:1.6;overflow-x:auto;padding:16px}.code-block .kw{color:#ff7b72}.code-block .st{color:#a5d6ff}.code-block .cm{color:#8b949e}input[type=text],input[type=number],input[type=date],select,textarea{border:1px solid var(--border);border-radius:var(--radius);color:var(--text);font-size:13px;outline:none;padding:8px 12px;transition:border-color .15s;width:100%}input:focus,select:focus,textarea:focus{border-color:var(--accent)}button.btn-primary{background:var(--primary);border:none;border-radius:var(--radius);color:#fff;cursor:pointer;font-size:13px;font-weight:600;padding:8px 18px;transition:background .15s}button.btn-primary:hover{background:var(--primary-hover)}.badge-valid{background:#dcfce7;border-radius:var(--radius);color:var(--valid);display:inline-flex;align-items:center;font-weight:700;gap:6px;padding:4px 10px}.badge-invalid{background:#fee2e2;border-radius:var(--radius);color:var(--invalid);display:inline-flex;align-items:center;font-weight:700;gap:6px;padding:4px 10px}.section-title{color:var(--primary);font-size:16px;font-weight:700;margin-bottom:12px}.section{margin-bottom:32px}.search-bar{margin-bottom:12px;max-width:320px}.split{display:grid;gap:24px;grid-template-columns:1fr 1fr}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px}.panel-title{color:var(--text-muted);font-size:11px;font-weight:600;letter-spacing:.5px;margin-bottom:12px;text-transform:uppercase}.sub-tabs{display:flex;gap:4px;margin-bottom:16px}.sub-tab-btn{background:none;border:1px solid var(--border);border-radius:var(--radius);color:var(--text-muted);cursor:pointer;font-size:12px;padding:5px 12px}.sub-tab-btn.active{background:var(--accent-light);border-color:var(--accent);color:var(--primary);font-weight:600}.demo-row{align-items:flex-start;display:flex;gap:12px;margin-bottom:16px}.demo-label{color:var(--text-muted);font-family:monospace;font-size:12px;min-width:220px;padding-top:10px}.demo-output{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);color:var(--primary);flex:1;font-family:monospace;font-size:13px;min-height:36px;padding:8px 12px;word-break:break-all}