:root { color-scheme: light dark; --fg: #16201b; --bg: #fbfaf7; --mut: #5d6b64; --line: #d8d5cd; --accent: #2f6f4f; --danger: #a33a2c; }
@media (prefers-color-scheme: dark) { :root { --fg: #e7e4dc; --bg: #14181a; --mut: #96a59d; --line: #2c3437; --accent: #79b58e; --danger: #e0806f; } }
* { box-sizing: border-box; }
body { margin: 0; font: 16px/1.6 system-ui, -apple-system, "Segoe UI", "Noto Sans CJK SC", sans-serif; color: var(--fg); background: var(--bg); }
header, main, footer { max-width: 40rem; margin: 0 auto; padding: 0 1rem; }
header { padding-top: 1.5rem; padding-bottom: .5rem; }
footer { padding-top: 2rem; padding-bottom: 3rem; color: var(--mut); }
.brand { font-weight: 600; text-decoration: none; color: var(--fg); }
h1 { font-size: 1.6rem; margin: 1rem 0 .5rem; }
h2 { font-size: 1.1rem; margin: 2rem 0 .5rem; }
a { color: var(--accent); }
p.note, .who { color: var(--mut); }
label { display: block; margin: 1rem 0 .25rem; }
input { width: 100%; padding: .6rem .7rem; font: inherit; color: var(--fg); background: transparent; border: 1px solid var(--line); border-radius: .5rem; }
button, .btn { display: inline-block; margin-top: .8rem; padding: .55rem 1rem; font: inherit; border: 1px solid var(--accent); border-radius: .5rem; background: var(--accent); color: var(--bg); text-decoration: none; cursor: pointer; }
.btn.secondary, button.secondary { background: transparent; color: var(--accent); }
.btn.danger, button.danger { background: transparent; color: var(--danger); border-color: var(--danger); }
button.link { background: none; border: none; color: var(--accent); padding: 0; margin-left: .8rem; text-decoration: underline; }
.msg { min-height: 1.6rem; }
.msg.err { color: var(--danger); }
.devices { list-style: none; padding: 0; }
.devices li { display: flex; justify-content: space-between; align-items: center; gap: 1rem; padding: .7rem 0; border-bottom: 1px solid var(--line); }
.devices .meta { color: var(--mut); font-size: .9rem; }
.devices button { margin: 0; padding: .3rem .7rem; font-size: .9rem; }