:root {
  --bg: #f7f7f5; --surface: #ffffff; --text: #1f2328; --muted: #5c6470; --line: #d9dce1;
  --accent: #1f5fa8; --accent-text: #ffffff; --warn-bg: #fff4e0; --warn-line: #e0a23a; --danger: #a8321f;
  --series-1: #2a78d6; --chart-grid: #e6e8ec;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a; --surface: #1e2125; --text: #e6e8eb; --muted: #a0a7b1; --line: #343940;
    --accent: #6ea8e8; --accent-text: #10151b; --warn-bg: #3a2e16; --warn-line: #b98a36; --danger: #e8806e;
    --series-1: #3987e5; --chart-grid: #2c3036;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 16px/1.6 system-ui, "Malgun Gothic", "Apple SD Gothic Neo", sans-serif; }
a { color: var(--accent); }
.top { display: flex; flex-wrap: wrap; gap: 8px 16px; align-items: center; justify-content: space-between; padding: 12px 16px; background: var(--surface); border-bottom: 1px solid var(--line); }
.brand { font-weight: 700; font-size: 18px; text-decoration: none; color: var(--text); }
.brand span { font-weight: 400; color: var(--muted); font-size: 14px; }
nav { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.who { color: var(--muted); font-size: 14px; }
main { max-width: 980px; margin: 0 auto; padding: 16px; }
footer { max-width: 980px; margin: 24px auto; padding: 0 16px 24px; color: var(--muted); font-size: 13px; }
h1 { font-size: 24px; margin: 8px 0 12px; overflow-wrap: anywhere; }
h2 { font-size: 19px; margin: 28px 0 8px; padding-top: 12px; border-top: 1px solid var(--line); }
h3 { font-size: 16px; margin: 16px 0 6px; }
.narrow { max-width: 420px; margin: 0 auto; }
.hero { padding: 24px 0; }
.crumb { margin: 0; font-size: 14px; color: var(--muted); }
form { display: grid; gap: 12px; margin: 8px 0; }
form.inline { display: inline; margin: 0; }
form.row { grid-template-columns: 1fr auto; align-items: end; }
label { display: grid; gap: 4px; font-weight: 600; }
label small, .hint { font-weight: 400; color: var(--muted); font-size: 14px; margin: 0; }
label.check { display: flex; gap: 8px; align-items: flex-start; font-weight: 400; }
label.check input { margin-top: 6px; flex: none; }
input:not([type=checkbox]):not([type=radio]), select { width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--text); font: inherit; }
input:focus-visible, select:focus-visible, button:focus-visible, a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
fieldset { border: 1px solid var(--line); border-radius: 6px; padding: 8px 12px 12px; margin: 0; display: grid; gap: 6px; min-width: 0; }
legend { font-weight: 600; padding: 0 4px; }
.checks { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 2px 12px; max-height: 260px; overflow: auto; }
.btn { display: inline-block; padding: 10px 16px; border: 1px solid var(--accent); border-radius: 6px; background: var(--accent); color: var(--accent-text); font: inherit; font-weight: 600; text-decoration: none; cursor: pointer; justify-self: start; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn.danger { background: transparent; border-color: var(--danger); color: var(--danger); }
button.link { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; text-decoration: underline; cursor: pointer; }
.flash, .note { background: var(--warn-bg); border-left: 4px solid var(--warn-line); padding: 10px 12px; border-radius: 4px; margin: 12px 0; }
ul.note { padding-left: 28px; }
.empty { color: var(--muted); }
.list { list-style: none; padding: 0; display: grid; gap: 8px; }
.list li { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; }
.list small { color: var(--muted); margin-left: 8px; }
.scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; background: var(--surface); font-size: 15px; }
th, td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
thead th { background: var(--bg); white-space: nowrap; }
td.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
td.small { font-size: 13px; color: var(--muted); min-width: 220px; }
table.kv th { width: 180px; background: var(--bg); }
code { font-family: ui-monospace, Consolas, monospace; font-size: 13px; overflow-wrap: anywhere; }
textarea { width: 100%; padding: 9px 10px; border: 1px solid var(--line); border-radius: 6px; background: var(--surface); color: var(--text); font: inherit; }
textarea.mono { font: 14px/1.5 ui-monospace, Consolas, monospace; }
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; align-items: center; }
.actions form { margin: 0; }
[hidden] { display: none !important; }
@media (max-width: 560px) { form.row { grid-template-columns: 1fr; } table.kv th { width: auto; } }

/* 판정 표시. 색만으로 구분하지 않도록 글자를 함께 씁니다. */
.tag { display: inline-block; font-size: 13px; padding: 1px 8px; border: 1px solid var(--line); border-radius: 999px; white-space: nowrap; }
.tag.ok { background: var(--ok-bg); color: var(--ok-text); border-color: transparent; }
.tag.bad { background: var(--bad-bg); color: var(--bad-text); border-color: transparent; }
.tag.warn { background: var(--warn-bg); color: var(--warn-text); border-color: transparent; }
.tag.mute { background: var(--mute-bg); color: var(--mute-text); border-color: transparent; }
:root { --ok-bg: #e3f1e6; --ok-text: #1d5a2c; --bad-bg: #fbe4e0; --bad-text: #8a2415; --warn-text: #7a4b00; --mute-bg: #eceef1; --mute-text: #3c4350; }
@media (prefers-color-scheme: dark) {
  :root { --ok-bg: #1d3a26; --ok-text: #a8dcb4; --bad-bg: #4a211b; --bad-text: #f3b3a8; --warn-text: #f0cf8f; --mute-bg: #2a2e34; --mute-text: #c3c9d1; }
}
.tabs { display: flex; flex-wrap: wrap; gap: 4px; margin: 16px 0 0; border-bottom: 1px solid var(--line); }
.tabs a { padding: 8px 12px; text-decoration: none; color: var(--muted); border: 1px solid transparent; border-bottom: 0; border-radius: 6px 6px 0 0; }
.tabs a[aria-current="page"] { color: var(--text); font-weight: 600; background: var(--surface); border-color: var(--line); margin-bottom: -1px; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 8px; margin: 12px 0; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 6px; padding: 10px 12px; }
.card b { display: block; font-size: 24px; font-variant-numeric: tabular-nums; }
.card span { color: var(--muted); font-size: 14px; }
.item { background: var(--surface); border: 1px solid var(--line); border-left: 4px solid var(--line); border-radius: 6px; padding: 10px 14px; margin: 10px 0; }
.item.bad { border-left-color: var(--danger); }
.item.warn { border-left-color: var(--warn-line); }
.item.ok { border-left-color: #4a9a5f; }
.item .meta { margin: 0 0 6px; display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: 14px; color: var(--muted); }
.item p { margin: 4px 0; overflow-wrap: anywhere; }
.item .src { font-size: 15px; }
.item details { margin-top: 6px; }
.item summary { font-weight: 400; font-size: 14px; color: var(--accent); }
.ev { font-size: 13px; color: var(--muted); overflow-wrap: anywhere; }
.blocks { display: grid; gap: 6px; max-height: 520px; overflow: auto; }
.block { margin: 0; padding: 6px 8px; border: 1px solid var(--line); border-radius: 4px; background: var(--surface); overflow-wrap: anywhere; white-space: pre-wrap; }
.block small { color: var(--muted); margin-right: 6px; white-space: nowrap; }
.block.heading { font-weight: 600; }
.block.table, .block.references { font-size: 14px; }
.steps td.num { width: 110px; }
progress { width: 100%; height: 10px; }
.stmt { display: grid; grid-template-columns: 1fr 130px 90px; gap: 8px; align-items: start; padding: 8px 0; border-top: 1px solid var(--line); }
.stmt small { color: var(--muted); }
@media (max-width: 640px) { .stmt { grid-template-columns: 1fr; } }
.pager { display: flex; gap: 12px; align-items: center; font-size: 14px; }
.card b.small { font-size: 15px; }

/* 간편 로그인 단추. 색은 각 사업자의 안내를 따릅니다. */
.social { display: grid; gap: 8px; margin: 12px 0 6px; }
.btn.social-btn { display: flex; align-items: center; justify-content: center; gap: 10px; min-height: 48px; border-radius: 8px; font-weight: 600; justify-self: stretch; text-align: center; background: var(--surface); color: var(--text); border-color: var(--line); }
.social-icon { width: 20px; height: 20px; flex: none; }
.btn.social-kakao { background: #FEE500; border-color: #FEE500; color: rgba(0, 0, 0, .85); }
.btn.social-naver { background: #03C75A; border-color: #03C75A; color: #ffffff; }
.btn.social-google { background: #ffffff; border-color: #747775; color: #1F1F1F; }
.btn.social-dev { border-style: dashed; }
.or { text-align: center; color: var(--muted); font-size: 14px; margin: 14px 0 4px; }
.cards.plans { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.cards.plans h3 { margin-top: 0; }