/* 프레임당 — 화이트 + 일렉트릭 바이올렛, 모노스페이스 숫자, 벤치마크 막대 비주얼 */
:root {
  --fd-bg: #ffffff;
  --fd-ink: #17141f;
  --fd-muted: #6b6580;
  --fd-accent: #7c3aed;
  --fd-accent-deep: #4c1d95;
  --fd-accent-soft: #a78bfa;
  --fd-wash: #f6f3fc;
  --fd-line: #e6e2f0;
  --fd-font: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo",
    "Segoe UI", "Malgun Gothic", "Helvetica Neue", Arial, sans-serif;
  --fd-mono: ui-monospace, "SF Mono", "Cascadia Code", Menlo, Consolas,
    "Liberation Mono", monospace;
  --fd-maxw: 62rem;
  --fd-radius: 10px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--fd-font);
  color: var(--fd-ink);
  background: var(--fd-bg);
  line-height: 1.7;
  word-break: keep-all;
}
img, svg { max-width: 100%; vertical-align: middle; }
a { color: var(--fd-accent); }
a:hover { color: var(--fd-accent-deep); }
h1, h2, h3 { line-height: 1.35; letter-spacing: -0.01em; }
h1 { font-size: 1.9rem; margin: 0 0 0.6em; }
h2 { font-size: 1.35rem; margin: 2em 0 0.6em; }
h3 { font-size: 1.1rem; margin: 1.6em 0 0.5em; }
code, pre, .fr_num { font-family: var(--fd-mono); font-variant-numeric: tabular-nums; }
code { background: var(--fd-wash); padding: 0.1em 0.35em; border-radius: 4px; font-size: 0.92em; }
pre {
  background: var(--fd-wash);
  border: 1px solid var(--fd-line);
  border-radius: var(--fd-radius);
  padding: 0.9rem 1rem;
  overflow-x: auto;
  font-size: 0.85rem;
  line-height: 1.6;
}

/* 스킵 링크 */
.fr_skip {
  position: absolute; left: -999px; top: 0;
  background: var(--fd-accent); color: #fff; padding: 0.5rem 1rem; z-index: 99;
}
.fr_skip:focus { left: 0; color: #fff; }

/* 헤더 */
.fr_top {
  border-bottom: 1px solid var(--fd-line);
  background: rgba(255, 255, 255, 0.96);
  position: sticky; top: 0; z-index: 10;
}
.fr_top_in {
  max-width: var(--fd-maxw); margin: 0 auto; padding: 0.65rem 1rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 0.75rem; flex-wrap: wrap;
}
.fr_logo {
  display: inline-flex; align-items: center; gap: 0.45rem;
  text-decoration: none; color: var(--fd-ink); font-weight: 700; font-size: 1.05rem;
}
.fr_nav { display: flex; gap: 0.25rem; flex-wrap: wrap; }
.fr_nav a {
  text-decoration: none; color: var(--fd-muted);
  padding: 0.35rem 0.6rem; border-radius: 6px; font-size: 0.92rem;
}
.fr_nav a:hover { color: var(--fd-accent-deep); background: var(--fd-wash); }

/* 본문 */
.fr_main {
  max-width: var(--fd-maxw); margin: 0 auto; padding: 1.5rem 1rem 3.5rem;
}

/* 히어로 */
.fr_hero { padding: 2.2rem 0 1.2rem; }
.fr_hero_kicker {
  font-family: var(--fd-mono); font-size: 0.8rem; letter-spacing: 0.12em;
  color: var(--fd-accent); text-transform: uppercase; margin: 0 0 0.7rem;
}
.fr_hero h1 { font-size: 2.2rem; margin-bottom: 0.5em; }
.fr_hero_sub { color: var(--fd-muted); font-size: 1.05rem; max-width: 44rem; margin: 0; }

/* 벤치마크 막대(비주얼 언어) */
.fr_bench { margin: 1.8rem 0 0.5rem; display: grid; gap: 0.55rem; max-width: 34rem; }
.fr_bench_row { display: grid; grid-template-columns: 7.5rem 1fr 3.5rem; gap: 0.6rem; align-items: center; }
.fr_bench_label { font-size: 0.82rem; color: var(--fd-muted); }
.fr_bench_track { background: var(--fd-wash); border-radius: 99px; height: 0.7rem; overflow: hidden; }
.fr_bench_fill { height: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--fd-accent-soft), var(--fd-accent)); }
.fr_bench_val { font-family: var(--fd-mono); font-size: 0.8rem; text-align: right; color: var(--fd-ink); }

/* 카드 그리드 */
.fr_grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(15.5rem, 1fr)); gap: 0.9rem; margin: 1.2rem 0; padding: 0; list-style: none; }
.fr_card {
  border: 1px solid var(--fd-line); border-radius: var(--fd-radius);
  padding: 1rem 1.1rem; background: #fff;
}
.fr_card_tag {
  font-family: var(--fd-mono); font-size: 0.72rem; letter-spacing: 0.1em;
  color: var(--fd-accent); margin: 0 0 0.45rem;
}
.fr_card h3 { margin: 0 0 0.4rem; font-size: 1.02rem; }
.fr_card p { margin: 0; font-size: 0.88rem; color: var(--fd-muted); }
.fr_card_soon { border-style: dashed; background: var(--fd-wash); }

/* 안내 박스 */
.fr_note {
  border-left: 3px solid var(--fd-accent); background: var(--fd-wash);
  border-radius: 0 var(--fd-radius) var(--fd-radius) 0;
  padding: 0.8rem 1rem; margin: 1.4rem 0; font-size: 0.92rem;
}

/* 표 */
.fr_tablewrap { overflow-x: auto; margin: 1.2rem 0; }
table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { border: 1px solid var(--fd-line); padding: 0.55rem 0.75rem; text-align: left; }
th { background: var(--fd-wash); font-weight: 600; }
td.fr_num, th.fr_num { text-align: right; }

/* FAQ (가시 마크업 — dl 기반) */
.fr_faq { margin-top: 2.5rem; }
.fr_faq_list { margin: 0; }
.fr_faq_row { border-bottom: 1px solid var(--fd-line); padding: 0.9rem 0; }
.fr_faq_q { font-weight: 700; margin: 0 0 0.35rem; }
.fr_faq_q::before { content: "Q. "; color: var(--fd-accent); font-family: var(--fd-mono); }
.fr_faq_a { margin: 0; color: var(--fd-muted); }

/* 임베드 킷 */
.fr_embedkit {
  margin-top: 2.5rem; border: 1px solid var(--fd-line);
  border-radius: var(--fd-radius); padding: 1.1rem 1.2rem; background: var(--fd-wash);
}
.fr_embedkit h2 { margin-top: 0; font-size: 1.1rem; }
.fr_embed_code { background: #fff; white-space: pre-wrap; word-break: break-all; }
.fr_copybtn {
  font: inherit; font-size: 0.9rem; cursor: pointer;
  background: var(--fd-accent); color: #fff; border: 0; border-radius: 7px;
  padding: 0.5rem 1.1rem;
}
.fr_copybtn:hover { background: var(--fd-accent-deep); }

/* 귀속바 — ?bare=1 임베드 뷰에서만 표시 */
.dangbar { display: none; }
.fr_bare .dangbar {
  display: flex; justify-content: flex-end;
  position: fixed; left: 0; right: 0; bottom: 0;
  background: #fff; border-top: 2px solid var(--fd-accent);
  padding: 0.45rem 0.9rem; font-size: 0.82rem; z-index: 50;
}
.fr_bare .dangbar a { text-decoration: none; font-weight: 600; }
.fr_bare .fr_top, .fr_bare .fr_end, .fr_bare .fr_embedkit, .fr_bare .fr_skip { display: none; }
.fr_bare .fr_main { padding-bottom: 3.5rem; }

/* 푸터 */
.fr_end { border-top: 2px solid var(--fd-accent); background: var(--fd-wash); margin-top: 2rem; }
.fr_end_in { max-width: var(--fd-maxw); margin: 0 auto; padding: 1.8rem 1rem 2.2rem; }
.fr_end_word { font-weight: 700; margin: 0 0 0.2rem; }
.fr_end_line { color: var(--fd-muted); font-size: 0.9rem; margin: 0; }
.fr_end_links { list-style: none; padding: 0; margin: 1.1rem 0; display: flex; flex-wrap: wrap; gap: 0.3rem 1.1rem; }
.fr_end_links a { color: var(--fd-muted); text-decoration: none; font-size: 0.88rem; }
.fr_end_links a:hover { color: var(--fd-accent-deep); text-decoration: underline; }
.fr_end_note { font-size: 0.8rem; color: var(--fd-muted); max-width: 46rem; }
.fr_end_copy { font-family: var(--fd-mono); font-size: 0.78rem; color: var(--fd-muted); margin-bottom: 0; }

@media (max-width: 40rem) {
  .fr_hero h1 { font-size: 1.7rem; }
  h1 { font-size: 1.55rem; }
  .fr_bench_row { grid-template-columns: 6rem 1fr 3rem; }
}


/* ---- farm calc/guide helpers ---- */
.farm-calc{border:1px solid #ccc;border-radius:10px;padding:1rem 1.1rem;margin:1.2rem 0;background:#fafafa}
.farm-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(11rem,1fr));gap:.85rem 1rem}
.farm-calc label{display:block;font-size:.78rem;font-weight:700;margin-bottom:.3rem}
.farm-calc input,.farm-calc select{width:100%;font:inherit;padding:.45rem .55rem;border:1px solid #bbb;border-radius:6px}
.farm-out{margin-top:.9rem;padding:.85rem 1rem;background:#fff;border:1px solid #ddd;border-radius:8px}
.farm-out table{width:100%;border-collapse:collapse}
.farm-out th,.farm-out td{text-align:left;padding:.3rem .35rem;border-bottom:1px solid #eee}
.farm-note{font-size:.9rem;color:#555;margin-top:.5rem}
.farm-hub{display:grid;grid-template-columns:repeat(auto-fit,minmax(14rem,1fr));gap:1rem;margin:1.2rem 0}
.farm-card{border:1px solid #ddd;border-radius:10px;padding:1rem;background:#fff}
.farm-card h3{margin:.2rem 0 .4rem;font-size:1.05rem}
.farm-card p{margin:0;font-size:.92rem;color:#444}
.guide-body p{margin:0 0 .85rem;line-height:1.65}
.guide-body h2{margin:1.6rem 0 .7rem}
.guide-body ul{margin:0 0 1rem;padding-left:1.2rem;line-height:1.55}

/* electric-bill line items + flow jump */
.fd-billbox {
  margin: 1.6rem 0 0;
  padding: 0;
  background: var(--fd-wash);
  border: 1px solid var(--fd-line);
  border-radius: var(--fd-radius);
  overflow: hidden;
}
.fd-billbox__h {
  margin: 0;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  background: var(--fd-accent);
  color: #fff;
  letter-spacing: -0.01em;
}
.fd-lines {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0;
}
.fd-line {
  display: grid;
  grid-template-columns: 4.2rem 1fr;
  gap: 0.5rem 0.75rem;
  align-items: baseline;
  padding: 0.4rem 1rem;
  border-bottom: 1px dashed var(--fd-line);
  font-size: 0.94rem;
}
.fd-line:last-child { border-bottom: 0; }
.fd-k {
  font-family: var(--fd-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--fd-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.fd-v {
  color: var(--fd-accent-deep);
  text-decoration: none;
  font-weight: 600;
}
.fd-v:hover { text-decoration: underline; color: var(--fd-accent); }
.fd-flow {
  margin: 1.4rem 0;
  padding: 1.1rem 1.15rem 1.15rem;
  background: linear-gradient(135deg, #faf8ff 0%, #f0e9ff 100%);
  border: 2px solid var(--fd-accent-soft);
  border-radius: var(--fd-radius);
}
.fd-flow h2 {
  margin: 0 0 0.55rem;
  color: var(--fd-accent-deep);
  font-size: 1.15rem;
}
.fd-flow ol {
  margin: 0;
  padding-left: 1.25rem;
}
.fd-flow li { margin: 0.35rem 0; }
.fd-jump {
  margin: 1rem 0;
  padding: 0.65rem 0.9rem;
  font-size: 0.92rem;
  background: #fff;
  border-left: 4px solid var(--fd-accent);
  box-shadow: 0 1px 0 var(--fd-line);
  line-height: 1.75;
}
.fd-jump a { font-weight: 600; text-decoration: none; }
.fd-jump a:hover { text-decoration: underline; }

/* entity see-also — plain, matches guide-body */
.see-also{margin:2rem 0 1rem;padding:1rem 0 0;border-top:1px solid rgba(127,127,127,.25)}
.see-also h2{font-size:1.15rem;margin:0 0 .75rem}
.see-also p{margin:0 0 .55rem;line-height:1.55}