/* 서드파티 CSS·폰트 0. 전부 이 파일 하나(CSP style-src 'self'). */
:root {
  --bg: #fbfbfa; --card: #ffffff; --ink: #18181b; --muted: #71717a;
  --line: #e4e4e7; --accent: #18181b; --ok: #15803d; --warn: #b45309; --err: #b91c1c;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b0b0c; --card: #151517; --ink: #f4f4f5; --muted: #a1a1aa;
          --line: #27272a; --accent: #f4f4f5; --ok: #4ade80; --warn: #fbbf24; --err: #f87171; }
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
}
.wrap { max-width: 34rem; margin: 0 auto; padding: 1.5rem 1rem 3rem; }
.brand { padding: 0.5rem 0 1.25rem; }
.logo { font-weight: 600; letter-spacing: -0.02em; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 1.5rem; }
h1 { font-size: 1.25rem; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 0.75rem; }
h2 { font-size: 1rem; font-weight: 600; margin: 1.5rem 0 0.5rem; }
p { margin: 0 0 0.75rem; }
.muted { color: var(--muted); }
.fine { color: var(--muted); font-size: 0.8125rem; margin-top: 1rem; }
.ok { color: var(--ok); }
.warn { color: var(--warn); border: 1px solid var(--warn); border-radius: 12px; padding: 0.75rem; }
label { display: block; font-size: 0.8125rem; color: var(--muted); margin: 1rem 0 0.25rem; }
.row { display: flex; gap: 1.25rem; align-items: center; margin: 0.5rem 0 1rem; }
.row label { margin: 0; }
input[type=text], input[type=password], input#otpCode, textarea {
  width: 100%; padding: 0.7rem 0.8rem; font: inherit; color: var(--ink);
  background: var(--bg); border: 1px solid var(--line); border-radius: 10px;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.875rem; }
input#otpCode { letter-spacing: 0.4em; text-align: center; font-size: 1.25rem; }
button.primary {
  margin-top: 1rem; width: 100%; padding: 0.75rem 1rem; font: inherit; font-weight: 600;
  color: var(--card); background: var(--accent); border: 0; border-radius: 999px; cursor: pointer;
}
button.primary:disabled { opacity: 0.4; cursor: not-allowed; }
dl.meta { display: grid; grid-template-columns: 7rem 1fr; gap: 0.35rem 0.75rem; margin: 0 0 1rem; }
dl.meta dt { color: var(--muted); font-size: 0.8125rem; }
dl.meta dd { margin: 0; word-break: break-all; }
.foot { margin-top: 1.5rem; text-align: center; }
.foot a { color: var(--muted); }
table { border-collapse: collapse; width: 100%; font-size: 0.875rem; }
th, td { text-align: left; padding: 0.5rem 0.5rem 0.5rem 0; border-bottom: 1px solid var(--line); vertical-align: top; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.875em; }