:root { color-scheme: light; --ink: #193b32; --paper: #f7f4e9; --line: #ccd5c8; --accent: #245848; }
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: radial-gradient(ellipse at top right,#dfe8d8,transparent 65%),var(--paper); font: 16px/1.65 "Noto Serif SC","Songti SC",serif; }
main { width: min(760px,100% - 2rem); margin: 3rem auto; }
header { border-left: 4px solid var(--accent); padding-left: 1.2rem; }
small { letter-spacing: .18em; font: 12px monospace; }
h1 { margin: .35rem 0; font-size: clamp(2rem,5vw,3.25rem); }
h2 { margin: 0; }
section { margin-top: 1.4rem; padding: 1.25rem; border: 1px solid var(--line); background: #fffdf6; }
label { display: block; margin: .35rem 0; }
input { width: 100%; min-height: 2.5rem; padding: .5rem; border: 1px solid var(--line); color: inherit; }
.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: .8rem; }
button { border: 1px solid var(--accent); color: var(--ink); background: transparent; padding: .55rem .85rem; cursor: pointer; font: inherit; }
button:first-child { background: var(--accent); color: white; }
button:disabled { opacity: .45; cursor: default; }
dl { display: grid; grid-template-columns: minmax(5rem, 1fr) 3fr; gap: .25rem .8rem; }
dd { margin: 0; overflow-wrap: anywhere; font: 14px/1.8 monospace; }
#code { background: #e6eee3; padding: .7rem; overflow-wrap: anywhere; }