:root{--kh-ink:#0b2f36;--kh-muted:#627383;--kh-line:#d7e3e8;--kh-soft-line:#edf2f4;--kh-bg:#e9f7f4;--kh-surface:#ffffff;--kh-surface-soft:#f7fafb;--kh-teal:#0aa79d;--kh-teal-dark:#077a74;--kh-teal-soft:#dff4f1;--kh-focus:#0b5fff;--kh-danger:#b00020;--kh-warning:#b87509;--kh-radius-sm:8px;--kh-radius-md:12px;--kh-radius-lg:16px;--kh-shadow-sm:0 1px 3px rgb(15 47 54/8%);--kh-shadow-md:0 10px 26px rgb(15 47 54/10%);--kh-shadow-lg:0 24px 60px rgb(15 47 54/12%)}*{box-sizing:border-box}html{background:var(--kh-bg);color:var(--kh-ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{margin:0;min-height:100vh;text-rendering:optimizeLegibility}button,input,select,textarea{font:inherit}a{color:inherit}code{font-family:SFMono-Regular,Consolas,Liberation Mono,monospace}