*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#F8F7F5;--color-surface:#FFFFFF;--color-text:#1C1C1E;--color-text-muted:#6B6B70;--color-accent:#3D6B5A;--color-accent-light:#EBF2EF;--color-accent-hover:#2E5245;--color-border:#E5E3DF;--color-border-strong:#C8C5BE;--color-error:#B91C1C;--color-error-bg:#FEF2F2;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;--shadow-sm:0 1px 3px rgba(0,0,0,0.06),0 1px 2px rgba(0,0,0,0.04);--shadow-md:0 4px 12px rgba(0,0,0,0.08),0 2px 4px rgba(0,0,0,0.04);--max-width:960px;--header-height:64px}html{font-size:16px;scroll-behavior:smooth}body{background-color:var(--color-bg);color:var(--color-text);line-height:1.65;-webkit-font-smoothing:antialiased;min-height:100vh;display:flex;flex-direction:column}main{flex:1 1}h1,h2,h3{font-weight:500;line-height:1.25;letter-spacing:-.02em;color:var(--color-text)}h1{font-size:clamp(1.875rem,4vw,2.75rem)}h2{font-size:clamp(1.375rem,3vw,1.875rem)}h3,p{font-size:1.0625rem}p{color:var(--color-text-muted)}a{color:var(--color-accent);text-decoration:none}a:hover{text-decoration:underline}.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 24px}