@import "https://fonts.googleapis.com/css2?family=Nunito:wght@400;500;600;700;800;900&family=Noto+Sans+SC:wght@300;400;500;700&display=swap";
:root{--primary:#ff6b35;--primary-light:#ff8f65;--primary-dark:#e55a20;--secondary:#4ecdc4;--accent:#ffe66d;--success:#51cf66;--warning:#fcc419;--danger:#ff6b6b;--info:#339af0;--hsk1:#ff6b6b;--hsk1-bg:#fff0f0;--hsk2:#4ecdc4;--hsk2-bg:#f0fffe;--hsk3:#a78bfa;--hsk3-bg:#f5f0ff;--hsk4:#3b82f6;--hsk4-bg:#eff6ff;--white:#fff;--gray-50:#f9fafb;--gray-100:#f3f4f6;--gray-200:#e5e7eb;--gray-300:#d1d5db;--gray-400:#9ca3af;--gray-500:#6b7280;--gray-600:#4b5563;--gray-700:#374151;--gray-800:#1f2937;--gray-900:#111827;--bg-main:#fef8f4;--bg-sidebar:#fff;--bg-card:#fff;--sidebar-width:220px;--font-main:"Nunito", sans-serif;--font-zh:"Noto Sans SC", sans-serif;--shadow-sm:0 1px 3px #0000000f, 0 1px 2px #0000000a;--shadow-md:0 4px 12px #00000014, 0 2px 4px #0000000a;--shadow-lg:0 10px 30px #0000001a, 0 4px 8px #0000000f;--shadow-xl:0 20px 50px #0000001f;--shadow-colored:0 8px 24px #ff6b3540;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--radius-xl:24px;--radius-full:9999px;--transition:.2s cubic-bezier(.4, 0, .2, 1);--transition-slow:.4s cubic-bezier(.4, 0, .2, 1);--transition-bounce:.3s cubic-bezier(.34, 1.56, .64, 1)}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-main);background:var(--bg-main);color:var(--gray-800);-webkit-font-smoothing:antialiased;min-height:100vh;line-height:1.6}.app-layout{min-height:100vh;display:flex}.main-content{margin-left:var(--sidebar-width);min-height:100vh;transition:margin var(--transition);flex:1;padding:28px}@media (max-width:768px){.main-content{margin-left:0;padding:16px 16px 80px}}.sidebar{width:var(--sidebar-width);background:var(--white);z-index:100;flex-direction:column;height:100vh;display:flex;position:fixed;top:0;left:0;overflow:hidden;box-shadow:2px 0 20px #0000000f}.sidebar-logo{border-bottom:1px solid var(--gray-100);align-items:center;gap:10px;padding:20px 16px 16px;display:flex}.sidebar-logo .logo-icon{background:linear-gradient(135deg, var(--primary), 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