:root{--primary:#1976D2;--primary-dark:#1565C0;--primary-light:#E3F2FD;--accent:#43A047;--text:#333;--text-light:#666;--bg:#fff;--bg-gray:#F5F7FA;--border:#E4E7ED;--shadow:0 2px 12px rgba(0,0,0,0.08);--shadow-hover:0 8px 30px rgba(0,0,0,0.12);--radius:8px;--max-width:1200px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,"Microsoft YaHei","PingFang SC","Helvetica Neue",sans-serif;color:var(--text);background:var(--bg);line-height:1.6}a{text-decoration:none;color:inherit}img{max-width:100%;display:block}.container{max-width:var(--max-width);margin:0 auto;padding:0 24px}.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:#fff;box-shadow:var(--shadow);height:68px}.navbar-inner{max-width:var(--max-width);margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 24px;height:100%}.navbar-logo{display:flex;align-items:center;gap:10px;cursor:pointer;flex-shrink:0}.navbar-logo img{height:42px}.navbar-logo 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