:root {
  --bg: #f4f5f7; --card: #ffffff; --ink: #14171c; --muted: #5d6673; --line: #dfe3e8;
  --brand: #0f2a44; --accent: #f2b705; --ok: #1d7a46; --okbg: #e3f4ea; --warn: #9a5b00; --warnbg: #fff3d6;
  --bad: #b3261e; --badbg: #fde7e5; --btn: #0f2a44; --btnink: #fff;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0e1116; --card: #171b22; --ink: #e8ebef; --muted: #9aa4b1; --line: #2a313b;
    --brand: #8fb8e6; --okbg: #12301f; --ok: #6fd39a; --warnbg: #33270c; --warn: #f2c44f; --badbg: #3a1513; --bad: #ff8a80;
    --btn: #f2b705; --btnink: #14171c; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font-size: 16px; line-height: 1.4; }
header.top { background: #0f2a44; color: #fff; padding: 14px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
header.top b { font-size: 17px; letter-spacing: .3px; }
header.top .dot { color: var(--accent); }
header.top button { background: transparent; color: #fff; border: 1px solid #ffffff55; border-radius: 8px; padding: 6px 10px; font-size: 14px; }
main { max-width: 560px; margin: 0 auto; padding: 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 16px; margin-bottom: 14px; }
h1 { font-size: 24px; margin: 0 0 4px; }
h2 { font-size: 17px; margin: 0 0 10px; }
.muted { color: var(--muted); font-size: 14px; }
label { display: block; font-size: 14px; color: var(--muted); margin: 10px 0 4px; }
input, select, textarea { width: 100%; font-size: 18px; padding: 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); }
button { font: inherit; cursor: pointer; }
.big { width: 100%; min-height: 64px; font-size: 21px; font-weight: 700; border: 0; border-radius: 14px; background: var(--btn); color: var(--btnink); margin-top: 10px; }
.big.go { background: #1d7a46; color: #fff; }
.big.stop { background: #b3261e; color: #fff; }
.big.alt { background: transparent; color: var(--ink); border: 2px solid var(--line); font-size: 18px; min-height: 54px; }
.big:disabled { opacity: .5; }
.status { font-size: 15px; padding: 10px 12px; border-radius: 10px; margin-top: 10px; }
.status.ok { background: var(--okbg); color: var(--ok); }
.status.warn { background: var(--warnbg); color: var(--warn); }
.status.bad { background: var(--badbg); color: var(--bad); }
.row { display: flex; gap: 10px; }
.row > * { flex: 1; }
ul.plain { list-style: none; padding: 0; margin: 0; }
ul.plain li { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 15px; }
ul.plain li:last-child { border-bottom: 0; }
.bigtime { font-size: 40px; font-weight: 800; letter-spacing: -1px; }
.hidden { display: none !important; }
.small-btn { padding: 10px 14px; border-radius: 10px; border: 1px solid var(--line); background: var(--card); color: var(--ink); font-size: 16px; }
input[type=checkbox] { width: auto; transform: scale(1.5); margin: 0 10px 0 4px; vertical-align: middle; }
textarea { font-family: inherit; }