:root{--zk-green-900:#183F31;--zk-green-800:#234D36;--zk-green-700:#2F6B49;--zk-green-100:#E6EFE8;--zk-cream-50:#F8F6F0;--zk-white:#FFFFFF;--zk-text:#1F2A24;--zk-muted:#6F7A72;--zk-line:#D8DDD3;--zk-amber-600:#C98B2C;--zk-amber-100:#F6E6CC;--zk-info-100:#DDE8EA;--zk-radius-sm:8px;--zk-radius-md:14px;--zk-radius-lg:22px;--zk-radius-pill:999px;--zk-shadow-soft:0 10px 30px rgba(24, 63, 49, 0.08);--zk-shadow-card:0 4px 14px rgba(24, 63, 49, 0.06);--zk-font-main:system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--zk-font-technical:ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;--zk-container:1280px;--zk-section-space:clamp(48px, 6vw, 88px)}html{scroll-behavior:smooth}body{font-family:var(--zk-font-main);font-size:17px;line-height:1.65;color:var(--zk-text);background:var(--zk-cream-50);text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased}a{color:var(--zk-green-800);text-decoration-thickness:1px;text-underline-offset:.16em}a:hover{color:var(--zk-green-700)}h1,h2,h3,h4,h5,h6{color:var(--zk-text);font-family:var(--zk-font-main);font-weight:750;letter-spacing:-.03em;line-height:1.12;margin-top:0}h1{font-size:clamp(34px, 4.4vw, 56px)}h2{font-size:clamp(28px, 3.2vw, 40px)}h3{font-size:clamp(22px, 2.2vw, 28px)}p{margin-top:0}img{max-width:100%;height:auto}button,input,select,textarea{font-family:inherit}::selection{background:var(--zk-green-100);color:var(--zk-green-900)}