:root {
  --bg: #f6f7f9; --card: #fff; --text: #14181f; --muted: #5b6573; --line: #dfe3e8;
  --brand: #0b5fff; --brand-text: #fff; --ok: #0a7a43; --ok-bg: #e6f6ee; --warn: #8a5a00; --warn-bg: #fff4d6; --bad: #b3261e; --bad-bg: #fdeceb;
}
:root[data-theme="dark"] { color-scheme: dark; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1218; --card: #181d26; --text: #eef1f5; --muted: #9aa4b2; --line: #2a313c;
    --brand: #4d8dff; --brand-text: #08101f; --ok: #4cd08a; --ok-bg: #12301f; --warn: #f2c14e; --warn-bg: #33290d; --bad: #ff8a80; --bad-bg: #351614;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; }
main { max-width: 560px; margin: 0 auto; padding: 24px 16px 64px; }
main.wide { max-width: 1000px; }
h1 { font-size: 1.5rem; margin: 0 0 4px; }
h2 { font-size: 1.1rem; margin: 0 0 12px; }
.sub { color: var(--muted); margin: 0 0 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 20px; margin-bottom: 16px; }
label { display: block; font-weight: 600; margin: 14px 0 6px; }
.hint { color: var(--muted); font-size: .875rem; margin-top: 4px; }
input, select, textarea { width: 100%; padding: 12px; font: inherit; color: inherit; background: var(--bg); border: 1px solid var(--line); border-radius: 10px; }
input:focus, select:focus, button:focus-visible, a:focus-visible { outline: 3px solid color-mix(in srgb, var(--brand) 45%, transparent); outline-offset: 1px; }
button, .btn { display: inline-block; width: 100%; padding: 14px 16px; margin-top: 18px; font: inherit; font-weight: 700; text-align: center; text-decoration: none; cursor: pointer; color: var(--brand-text); background: var(--brand); border: 0; border-radius: 10px; }
button.secondary { color: var(--text); background: transparent; border: 1px solid var(--line); }
button.small { width: auto; margin: 0; padding: 6px 12px; font-size: .875rem; }
button:disabled { opacity: .55; cursor: not-allowed; }
.amount { font-size: 2rem; font-weight: 800; margin: 4px 0 12px; }
.badge { display: inline-block; padding: 4px 10px; border-radius: 999px; font-size: .8125rem; font-weight: 700; }
.badge.ok { color: var(--ok); background: var(--ok-bg); }
.badge.warn { color: var(--warn); background: var(--warn-bg); }
.badge.bad { color: var(--bad); background: var(--bad-bg); }
.msg { padding: 12px 14px; border-radius: 10px; margin-top: 14px; }
.msg.bad { color: var(--bad); background: var(--bad-bg); }
.msg.ok { color: var(--ok); background: var(--ok-bg); }
ol.steps { padding-left: 20px; margin: 8px 0 0; }
ol.steps li { margin: 6px 0; }
.hidden { display: none !important; }
table { width: 100%; border-collapse: collapse; font-size: .9375rem; }
th, td { padding: 8px 6px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: .8125rem; }
.scroll { overflow-x: auto; }
.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs button { width: auto; margin: 0; padding: 8px 14px; color: var(--text); background: var(--card); border: 1px solid var(--line); }
.tabs button[aria-selected="true"] { color: var(--brand-text); background: var(--brand); border-color: var(--brand); }
.row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.row input { width: auto; flex: 1 1 140px; }
.narrow { max-width: 420px; }
.mt { margin-top: 20px; }