:root{--color-bg-primary:#f5f5f7;--color-bg-white:#fff;--color-text-primary:#111;--color-text-secondary:#5f5f6a;--color-accent:#3478f6;--color-accent-hover:#2563eb;--color-divider:#e5e5ea;--font-family:-apple-system,BlinkMacSystemFont,"SF Pro Text",system-ui,sans-serif;--spacing-xs:0.5rem;--spacing-sm:1rem;--spacing-md:1.5rem;--spacing-lg:2rem;--spacing-xl:3rem;--spacing-2xl:4rem;--spacing-3xl:6rem;--container-max:1200px;--container-padding:1.5rem;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-sm:0 1px 2px rgba(0,0,0,.04);--shadow-md:0 4px 12px rgba(0,0,0,.08);--shadow-lg:0 8px 24px rgba(0,0,0,.12);--transition-fast:150ms ease;--transition-normal:250ms ease}*,:after,:before{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-family);font-size:16px;line-height:1.6;background-color:var(--color-bg-primary)}body,h1,h2,h3,h4,h5,h6{color:var(--color-text-primary)}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2}h1{font-size:clamp(2.5rem,5vw,3.5rem);letter-spacing:-.02em}h2{font-size:clamp(2rem,4vw,2.5rem);letter-spacing:-.01em}h3{font-size:clamp(1.25rem,2vw,1.5rem)}p{color:var(--color-text-secondary);max-width:65ch}a{color:var(--color-accent);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-hover)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}button{cursor:pointer;border:none;background:none}button,input,select,textarea{font-family:inherit;font-size:inherit}img{max-width:100%;height:auto;display:block}ol,ul{list-style:none}.container{max-width:var(--container-max);margin:0 auto;padding:0 var(--container-padding)}.section{padding:var(--spacing-3xl) 0}@media (max-width:768px){.section{padding:var(--spacing-2xl) 0}}.bg-white{background-color:var(--color-bg-white)}.bg-gray{background-color:var(--color-bg-primary)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}