/* ===== 吧啦吧啦 使用文档 - 白色主题 ===== */:root{--primary:#2563EB;--primary-light:#3B82F6;--accent:#F97316;--success:#16A34A;--danger:#DC2626;--bg:#FFFFFF;--bg-secondary:#F8FAFC;--bg-tertiary:#F1F5F9;--text:#0F172A;--text-secondary:#475569;--text-tertiary:#94A3B8;--border:#E2E8F0;--radius:8px;--radius-lg:12px;--max-width:960px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:15px;line-height:1.7;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased}.top-nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,0.95);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);padding:0 24px;height:56px;display:flex;align-items:center;justify-content:space-between}.top-nav .logo{font-size:18px;font-weight:700;color:var(--primary);text-decoration:none}.top-nav .nav-links{display:flex;gap:4px;list-style:none}.top-nav .nav-links a{padding:6px 12px;font-size:13px;color:var(--text-secondary);text-decoration:none;border-radius:var(--radius)}.top-nav .nav-links a:hover,.top-nav .nav-links a.active{color:var(--primary);background:var(--bg-tertiary)}.sidebar{position:fixed;top:56px;left:0;bottom:0;width:240px;overflow-y:auto;border-right:1px solid var(--border);background:var(--bg);padding:16px 0}.sidebar::-webkit-scrollbar{width:4px}.sidebar::-webkit-scrollbar-thumb{background:var(--border)}.sidebar-section .section-title{padding:6px 20px;font-size:11px;font-weight:600;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:0.5px}.sidebar-section a{display:block;padding:7px 20px 7px 24px;font-size:14px;color:var(--text-secondary);text-decoration:none;border-left:3px solid transparent}.sidebar-section a:hover{color:var(--primary);background:var(--bg-secondary)}.sidebar-section a.active{color:var(--primary);background:#EFF6FF;border-left-color:var(--primary);font-weight:600}.main-content{margin-left:240px;margin-top:56px;padding:40px 48px 80px;max-width:var(--max-width)}.main-content.full-width{margin-left:0;max-width:100%}.hero{text-align:center;padding:60px 0 48px}.hero h1{font-size:36px;font-weight:800;margin-bottom:12px}.hero p{font-size:17px;color:var(--text-secondary);max-width:600px;margin:0 auto}.feature-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px;margin:40px 0}.feature-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px;text-decoration:none;color:inherit}.feature-card:hover{box-shadow:0 4px 6px rgba(0,0,0,0.07);transform:translateY(-2px)}.feature-card .icon{width:40px;height:40px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:20px;margin-bottom:14px}.feature-card h3{font-size:16px;font-weight:600;margin-bottom:6px}.feature-card p{font-size:13px;color:var(--text-secondary)}h1{font-size:30px;font-weight:800;margin:0 0 8px}h2{font-size:22px;font-weight:700;margin:40px 0 12px;border-bottom:2px solid var(--border);padding-bottom:8px}h3{font-size:17px;font-weight:600;margin:28px 0 8px}p{margin-bottom:14px;color:var(--text-secondary)}ul,ol{margin:0 0 14px 20px}li{margin-bottom:6px;color:var(--text-secondary)}.tip,.info,.warning{padding:14px 18px;border-radius:var(--radius);margin:20px 0;font-size:14px;border-left:4px solid}.tip{background:#F0FDF4;border-color:var(--success);color:#166534}.info{background:#EFF6FF;border-color:var(--primary);color:#1E40AF}.warning{background:#FFF7ED;border-color:var(--accent);color:#9A3412}.steps{counter-reset:step;list-style:none;margin:20px 0}.steps li{counter-increment:step;padding:16px 20px 16px 52px;position:relative;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:10px;color:var(--text-secondary)}.steps li::before{content:counter(step);position:absolute;left:16px;top:16px;width:26px;height:26px;background:var(--primary);color:#fff;font-size:13px;font-weight:700;display:flex;align-items:center;justify-content:center;border-radius:50%}.steps li strong{color:var(--text)}table{width:100%;border-collapse:collapse;margin:20px 0;font-size:14px}th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--border)}th{background:var(--bg-secondary);font-weight:600;font-size:13px}.tag{display:inline-block;padding:2px 8px;font-size:11px;font-weight:600;border-radius:10px;margin-right:4px}.tag-pro{background:#FEF3C7;color:#92400E}.tag-free{background:#DBEAFE;color:#1E40AF}.page-footer{margin-top:60px;padding-top:24px;border-top:1px solid var(--border);display:flex;justify-content:space-between}.page-footer a{color:var(--primary);font-size:14px}@media(max-width:768px){.sidebar{display:none}.main-content{margin-left:0;padding:24px 20px}.hero h1{font-size:26px}}