:root{--color-primary:#1a5fb4;--color-primary-dark:#144a82;--color-primary-light:#2e7dd1;--color-accent:#e54d26;--color-accent-dark:#c43d1a;--color-accent-light:#ff6b42;--color-gray-900:#1f2328;--color-gray-700:#3d4450;--color-gray-500:#5c6370;--color-gray-400:#9ca3af;--color-gray-200:#d1d5db;--color-gray-100:#e5e7eb;--color-gray-50:#f8f9fa;--color-bg-white:#fff;--color-bg-light:#f8fafc;--color-bg-dark:#1f2328;--color-text-primary:#1f2328;--color-text-secondary:#5c6370;--color-text-light:#fff;--color-success:#10b981;--color-warning:#f59e0b;--color-error:#ef4444;--font-family:"Lexend", "PingFang SC", "Microsoft YaHei", sans-serif;--radius-sm:4px;--radius-md:8px;--radius-lg:16px;--shadow-sm:0 1px 2px #0000000d;--shadow-md:0 4px 6px #0000001a;--shadow-lg:0 10px 25px #00000026;--transition-fast:.15s ease;--transition-normal:.25s ease;--transition-slow:.4s ease;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-6:1.5rem;--space-8:2rem;--space-12:3rem;--space-16:4rem;--breakpoint-sm:640px;--breakpoint-md:768px;--breakpoint-lg:1024px;--breakpoint-xl:1280px}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family);color:var(--color-text-primary);background-color:var(--color-bg-white);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-weight:400;line-height:1.6}a{color:inherit;transition:color var(--transition-fast);text-decoration:none}ul,ol{list-style:none}img{max-width:100%;height:auto;display:block}button{cursor:pointer;font-family:inherit}.container{width:100%;max-width:1200px;padding:0 var(--space-6);margin:0 auto}.section{padding:var(--space-16) 0}.section-title{text-align:center;margin-bottom:var(--space-12)}.section-title h2{color:var(--color-gray-900);margin-bottom:var(--space-4);letter-spacing:-.02em;font-size:2.25rem;font-weight:600}.section-title p{color:var(--color-text-secondary);font-size:1rem;font-weight:400}.btn{padding:var(--space-3) var(--space-8);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-normal);justify-content:center;align-items:center;gap:var(--space-2);border:none;font-size:1rem;font-weight:500;display:inline-flex}.btn-primary{background:var(--color-accent);color:var(--color-text-light)}.btn-primary:hover{background:var(--color-accent-dark);box-shadow:var(--shadow-md);transform:translateY(-2px)}.btn-secondary{background:var(--color-primary);color:var(--color-text-light)}.btn-secondary:hover{background:var(--color-primary-dark)}.btn-outline{color:var(--color-text-light);border:2px solid var(--color-text-light);background:0 0}.btn-outline:hover{background:var(--color-text-light);color:var(--color-primary)}@media (width<=768px){.section{padding:3rem 0}.section-title h2{font-size:1.75rem}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}