:root {
  --bg: #f7f7f5; --panel: #ffffff; --line: #e4e3de; --text: #1d1d1b; --muted: #74736d;
  --accent: #2f5d50; --accent-soft: #e3ece8; --accent-text: #fff;
  --error: #b5473a; --error-soft: #f8e4e1; --warn: #8d5b08; --warn-soft: #f8ecd6; --info: #3d5f8a; --info-soft: #e3ebf5; --ok: #23784f;
  --code: #f1f0ec; --radius: 14px;
  font: 15px/1.6 -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Malgun Gothic", "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #161615; --panel: #1f1f1d; --line: #33332f; --text: #ecebe6; --muted: #9a9993;
    --accent: #77b9a2; --accent-soft: #23342e; --accent-text: #10201b;
    --error: #e07a6a; --error-soft: #3a221e; --warn: #e3a94a; --warn-soft: #3a2f1c; --info: #8fb2e0; --info-soft: #1e2a3a; --ok: #5ccb92; --code: #2a2a27;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--text); }
a { color: var(--accent); }
h1 { font-size: 26px; line-height: 1.3; margin: 0 0 8px; letter-spacing: -.01em; }
h2 { font-size: 17px; margin: 0 0 10px; }
h3 { font-size: 15px; margin: 14px 0 6px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

/* 사이트 틀 (도구 바깥) */
.top { display: flex; align-items: center; gap: 12px; max-width: 980px; margin: 0 auto; padding: 14px 16px; }
.brand { font-weight: 800; font-size: 18px; color: var(--text); text-decoration: none; }
.lang { margin-left: auto; font-size: 14px; padding: 10px 4px; }
main { max-width: 980px; margin: 0 auto; padding: 8px 16px 40px; display: flex; flex-direction: column; gap: 18px; }
.lead { margin: 0; font-size: 16px; }
.note { margin: 0; font-size: 14px; color: var(--ok); }
.tool { width: 100%; height: 520px; border: 0; display: block; background: transparent; }
/* 쿠팡 파트너스 상자 — 링크(href)가 하나도 없으면 고지째 숨긴다. :has를 모르는 브라우저는 shell.js가 숨긴다 */
.partner { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 20px; }
.partner:not(:has(a[href])), .partner li:not(:has(a[href])) { display: none; }
.disclosure-first { margin: 0; padding: 8px 12px; border-radius: 10px; background: var(--code); color: #65645e; font-size: 14px; font-weight: 400; }  /* 쿠팡 고지: 본문과 구분되는 회색 바탕. 글자는 --muted보다 조금 진하게(회색 바탕 위 대비 5.2) */
.partner .disclosure { margin: 0 0 12px; padding: 10px 12px; border-radius: 10px; background: var(--code); color: #65645e; font-size: 14px; font-weight: 400; }
@media (prefers-color-scheme: dark) { .disclosure-first, .partner .disclosure { color: var(--muted); } }
.partner h2 { margin-bottom: 6px; }
.partner ul { margin: 0; padding-left: 20px; }
.partner li { padding: 6px 0; }
.partner a { overflow-wrap: anywhere; }
.doc { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 20px; }
.doc p:last-child { margin-bottom: 0; }
.doc ol { margin: 0; padding-left: 22px; }
.doc li { margin: 4px 0; }
[data-contact]:empty { min-height: 80px; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; padding: 0; margin: 0; list-style: none; }
.cards a { display: flex; flex-direction: column; gap: 4px; height: 100%; padding: 16px 18px; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; color: var(--text); }
.cards a:hover { border-color: var(--accent); }
.cards b { color: var(--accent); font-size: 16px; }
footer { max-width: 980px; margin: 0 auto; padding: 20px 16px 40px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 6px 18px; font-size: 14px; }
footer a { padding: 8px 0; }
footer p { flex-basis: 100%; margin: 4px 0 0; }
@media (max-width: 600px) { h1 { font-size: 22px; } .doc { padding: 16px; } }
h2.section { margin: 10px 0 0; }
.prose h1 { font-size: 24px; }
.prose h2 { font-size: 18px; margin: 22px 0 8px; }
.prose p { margin: 0 0 12px; }
.prose pre { background: var(--code); border-radius: 10px; padding: 12px 14px; overflow-x: auto; font: 13px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
.prose code { background: var(--code); border-radius: 4px; padding: 1px 5px; font: 13px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; overflow-wrap: anywhere; }
.prose pre code { background: none; padding: 0; overflow-wrap: normal; }
.prose a { overflow-wrap: anywhere; }
.prose .table { overflow-x: auto; margin: 0 0 12px; }
.prose table { border-collapse: collapse; font-size: 14px; min-width: 100%; }
.prose th, .prose td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; }
.prose th { background: var(--code); font-weight: 600; }
.prose .num { text-align: right; font-variant-numeric: tabular-nums; }
.cta { border-color: var(--accent); }
.cta p { margin: 0 0 8px; }
.btn-link { display: inline-block; padding: 10px 18px; border-radius: 12px; background: var(--accent); color: var(--accent-text); font-weight: 600; text-decoration: none; }
.prose p.video { margin: 0 0 18px; }
.video-link { white-space: nowrap; }
/* '30초 해결 순서'(인코딩 도구·G01 첫 문단 아래): 설명용 상자 — 경고·허락 창처럼 보이지 않게 연한 강조색 */
.steps-box { background: var(--accent-soft); border-radius: var(--radius); padding: 14px 16px; margin: 4px 0; }
.steps-box h2, .steps-box summary { margin: 0 0 6px; font-size: 16px; font-weight: 700; }
details.steps-box { padding: 10px 16px; } details.steps-box summary { margin: 0; cursor: pointer; } details.steps-box[open] summary { margin-bottom: 6px; }
.steps-box ol { margin: 0; padding-left: 1.3em; display: grid; gap: 6px; font-size: 15px; line-height: 1.55; }