:root{--space-xs:clamp(4px,0.5vw,8px);--space-sm:clamp(8px,1vw,12px);--space-md:clamp(12px,1.5vw,16px);--space-lg:clamp(16px,2vw,24px);--space-xl:clamp(24px,3vw,32px);--space-2xl:clamp(32px,4vw,48px);--space-3xl:clamp(48px,6vw,64px);--space-4xl:clamp(64px,8vw,96px);--primary-color:#e60012;--primary-dark:#c4000f;--primary-light:rgba(230,0,18,.1);--brand-light:rgba(230,0,18,.08);--success-color:#52c41a;--warning-color:#fa8c16;--error-color:#e60012;--info-color:#1890ff;--ai-color:#722ed1;--ai-hover:#9254de;--ai-light:rgba(114,46,209,.1);--bg-primary:#fff;--bg-secondary:#f5f5f5;--bg-tertiary:#fafafa;--text-primary:#1a1a1a;--text-secondary:#666;--text-tertiary:#999;--text-quaternary:#ccc;--border-color:#e8e8e8;--border-light:#f0f0f0;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--radius-full:9999px;--shadow-sm:0 1px 2px rgba(0,0,0,.06);--shadow-md:0 4px 12px rgba(0,0,0,.08);--shadow-lg:0 8px 24px rgba(0,0,0,.12);--shadow-xl:0 12px 48px rgba(0,0,0,.16);--header-height:60px;--container-width:1500px;--footer-bg:#1a1a1a;--hero-gradient:linear-gradient(135deg,#667eea,#764ba2 25%,#f093fb 50%,#f5576c 75%,#fda085);--hero-gradient-fallback:linear-gradient(135deg,#1a1a2e,#16213e 50%,#0f3460);--font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:var(--font-family);font-size:14px;line-height:1.6;color:var(--text-primary);background:var(--bg-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button{cursor:pointer;border:none;background:none;font-family:inherit}.container{max-width:var(--container-width);margin:0 auto;padding:0 var(--space-lg)}.ant-btn-primary{background:var(--primary-color)!important;border-color:var(--primary-color)!important}.ant-btn-primary:hover{background:var(--primary-dark)!important;border-color:var(--primary-dark)!important}.skip-link{position:absolute;top:-40px;left:0;background:var(--primary-color);color:#fff;padding:8px 16px;z-index:10000;transition:top .3s}.skip-link:focus{top:0}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}