:root { --ink: #1f2937; --muted: #5b6573; --deep: #064e3b; --green: #047857; --line: #e5e7eb; }
* { box-sizing: border-box; }
body { margin: 0; background: #f8faf9; color: var(--ink); font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; font-size: 17px; line-height: 1.6; }
header, main, footer { max-width: 760px; margin: 0 auto; padding-left: 20px; padding-right: 20px; }
header { padding-top: 18px; padding-bottom: 6px; }
.back { color: var(--green); text-decoration: none; font-weight: 600; font-size: 15px; }
main { padding-top: 10px; padding-bottom: 40px; }
h1 { color: var(--deep); font-size: 32px; line-height: 1.2; margin: 14px 0 10px; }
h2 { color: var(--deep); font-size: 21px; margin: 30px 0 8px; }
p, ul { margin: 10px 0; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
a { color: var(--green); }
.todo { background: #fef3c7; color: #78350f; padding: 1px 6px; border-radius: 4px; font-weight: 600; }
.meta { color: var(--muted); font-size: 14px; margin-top: 30px; }
footer { padding-top: 20px; padding-bottom: 40px; color: var(--muted); font-size: 14px; border-top: 1px solid var(--line); }