:root {
  --bg: #f4f6f9; --card: #ffffff; --ink: #14181d; --mute: #5f6872; --line: #dfe4ea; --acc: #1f6feb; --acc-ink: #ffffff;
  --good: #1a7f37; --warn-bg: #fff4ce; --warn-ink: #5c4300; --bad: #cf222e; --code-bg: #f0f3f6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d1117; --card: #161b22; --ink: #e6edf3; --mute: #8b949e; --line: #30363d; --acc: #4493f8; --acc-ink: #0d1117;
    --good: #3fb950; --warn-bg: #3a2f00; --warn-ink: #f2cc60; --bad: #f85149; --code-bg: #0b0f14;
  }
}
:root[data-theme="dark"] {
  --bg: #0d1117; --card: #161b22; --ink: #e6edf3; --mute: #8b949e; --line: #30363d; --acc: #4493f8; --acc-ink: #0d1117;
  --good: #3fb950; --warn-bg: #3a2f00; --warn-ink: #f2cc60; --bad: #f85149; --code-bg: #0b0f14;
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body { font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }
.wrap { max-width: 600px; margin: 0 auto; padding: 16px; }
header.top { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; padding: 8px 0 14px; }
header.top h1 { font-size: 22px; margin: 0; }
header.top a { color: var(--mute); font-size: 14px; text-decoration: none; }
.banner { background: var(--warn-bg); color: var(--warn-ink); border-radius: 10px; padding: 10px 14px; font-size: 14px; margin-bottom: 14px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px; margin-bottom: 14px; }
.card h2 { font-size: 17px; margin: 0 0 10px; }
label { display: block; font-size: 13px; color: var(--mute); margin: 12px 0 5px; }
select, input, button { width: 100%; font: inherit; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--ink); }
input:focus, select:focus { outline: 2px solid var(--acc); outline-offset: 1px; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
button.primary { background: var(--acc); color: var(--acc-ink); border: none; font-weight: 600; margin-top: 16px; cursor: pointer; }
button.primary:disabled { opacity: .55; cursor: wait; }
button.ghost { background: transparent; color: var(--acc); border: 1px solid var(--line); font-weight: 600; cursor: pointer; margin-top: 10px; }
.msg { margin-top: 10px; font-size: 14px; color: var(--mute); min-height: 1.2em; }
.err { color: var(--bad); }
.ok { color: var(--good); }
.big { font-size: 28px; font-weight: 700; letter-spacing: -0.01em; }
.mute { color: var(--mute); font-size: 13px; }
table { width: 100%; border-collapse: collapse; font-size: 14px; margin-top: 8px; }
td { padding: 7px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
td:last-child { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
.ours { color: var(--good); font-weight: 600; }
.field { margin-top: 12px; }
.field .k { font-size: 13px; color: var(--mute); margin-bottom: 4px; }
.copy { display: flex; gap: 8px; align-items: stretch; }
.copy code { flex: 1; display: block; background: var(--code-bg); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 13px; word-break: break-all; line-height: 1.4; }
.copy button { width: auto; padding: 0 14px; cursor: pointer; font-weight: 600; background: var(--card); }
.steps { margin: 0; padding-left: 20px; font-size: 14px; }
.steps li { margin: 6px 0; }
.pill { display: inline-block; font-size: 12px; padding: 2px 8px; border-radius: 999px; border: 1px solid var(--line); color: var(--mute); }
footer { color: var(--mute); font-size: 13px; padding: 10px 0 30px; }
footer a { color: inherit; }
.terms h2 { font-size: 16px; margin: 18px 0 6px; }
.terms p, .terms li { font-size: 14px; }
@media (max-width: 420px) { .row { grid-template-columns: 1fr; } .big { font-size: 24px; } }