/* =====================================================================
 *  요금비교 (생활요금 비교) 공통 스타일
 *  모바일 우선 · 큰 숫자 · 카드형 결과
 * ===================================================================== */

:root{
  --bg:#f5f7fb;
  --card:#ffffff;
  --line:#e5e9f2;
  --line2:#eef1f7;
  --tx:#182234;
  --tx2:#5b6779;
  --tx3:#8b95a6;
  --pri:#2f6bff;
  --pri-d:#1f4fd0;
  --pri-bg:#eef3ff;
  --ok:#0a9d67;
  --ok-bg:#e8f8f1;
  --warn:#c2410c;
  --warn-bg:#fff3e9;
  --danger:#d92d20;
  --radius:14px;
  --shadow:0 1px 2px rgba(20,35,70,.05), 0 6px 20px rgba(20,35,70,.06);
  --shadow-lg:0 2px 6px rgba(20,35,70,.07), 0 14px 40px rgba(20,35,70,.10);
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--tx);
  font-family:"Pretendard","Apple SD Gothic Neo","Malgun Gothic",
    system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px; line-height:1.65; word-break:keep-all;
}
img{max-width:100%;height:auto}
a{color:var(--pri);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}

/* ---------- 헤더 / 내비 ---------- */
.site-head{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;height:56px}
.brand{display:flex;align-items:center;gap:8px;font-weight:800;font-size:18px;color:var(--tx)}
.brand:hover{text-decoration:none}
.brand .logo{font-size:22px}
.brand small{display:none;font-weight:500;color:var(--tx3);font-size:12px}
@media(min-width:560px){.brand small{display:inline}}
.nav-toggle{
  border:1px solid var(--line);background:#fff;color:var(--tx2);
  border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;cursor:pointer;
  font-family:inherit;
}
.nav-toggle:hover{border-color:var(--pri);color:var(--pri)}
.site-nav{background:#fff;border-bottom:1px solid var(--line);display:none}
.site-nav.open{display:block}
@media(min-width:880px){
  .site-nav{display:block}
  .nav-toggle{display:none}
}
.site-nav ul{list-style:none;margin:0;padding:6px 0;display:flex;flex-wrap:wrap;gap:2px}
.site-nav a{
  display:block;padding:8px 12px;border-radius:8px;color:var(--tx2);
  font-size:14px;font-weight:600;
}
.site-nav a:hover{background:var(--pri-bg);color:var(--pri);text-decoration:none}
.site-nav a.on{background:var(--pri);color:#fff}

/* ---------- 시즌 배너 ---------- */
.season{
  margin:14px auto 0;max-width:880px;
  background:linear-gradient(135deg,#2f6bff,#5b8bff);
  color:#fff;border-radius:var(--radius);padding:16px 18px;
  display:flex;gap:12px;align-items:flex-start;
}
.season .ic{font-size:24px;line-height:1.2}
.season b{display:block;font-size:16px;margin-bottom:2px}
.season p{margin:0;font-size:14px;opacity:.95}
.season .go{
  display:inline-block;margin-top:8px;background:rgba(255,255,255,.2);
  color:#fff;border-radius:999px;padding:6px 14px;font-size:13px;font-weight:700;
}
.season .go:hover{background:rgba(255,255,255,.32);text-decoration:none}
@media(max-width:900px){.season{margin:14px 16px 0}}

/* ---------- 본문 ---------- */
main{padding:20px 0 40px}
h1{font-size:26px;line-height:1.35;margin:8px 0 10px;letter-spacing:-.02em}
h2{font-size:20px;margin:32px 0 12px;letter-spacing:-.01em}
h3{font-size:17px;margin:22px 0 8px}
.lead{color:var(--tx2);font-size:15px;margin:0 0 20px}

.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;margin:0 0 16px;box-shadow:var(--shadow)}
.card > h2:first-child,.card > h3:first-child{margin-top:0}

/* ---------- 도구 카드 그리드 ---------- */
.cards{display:grid;gap:12px;grid-template-columns:1fr;margin:0 0 24px}
@media(min-width:600px){.cards{grid-template-columns:1fr 1fr}}
.tool-card{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:18px;color:var(--tx);box-shadow:var(--shadow);transition:.15s;position:relative;
}
.tool-card:hover{text-decoration:none;border-color:var(--pri);transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.tool-card .ic{font-size:26px;display:block;margin-bottom:6px}
.tool-card b{display:block;font-size:17px;margin-bottom:4px}
.tool-card span.d{display:block;color:var(--tx2);font-size:14px}
.tag{
  position:absolute;top:14px;right:14px;font-size:11px;font-weight:700;
  background:var(--line2);color:var(--tx2);border-radius:999px;padding:3px 9px;
}
.tag.hot{background:#ffece6;color:#d1452a}
.tag.new{background:var(--ok-bg);color:var(--ok)}

/* ---------- 입력 폼 ---------- */
.field{margin:0 0 14px}
.field > label,.field-label{display:block;font-size:14px;font-weight:700;margin-bottom:6px}
.field .hint{display:block;font-size:12.5px;color:var(--tx3);font-weight:500;margin-top:4px}
input[type=number],input[type=text],select{
  width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:10px;
  font-size:16px;font-family:inherit;background:#fff;color:var(--tx);
}
input[type=number]:focus,input[type=text]:focus,select:focus{
  outline:none;border-color:var(--pri);box-shadow:0 0 0 3px rgba(47,107,255,.13)
}
input[type=range]{width:100%;accent-color:var(--pri);height:28px}
.inline{display:flex;gap:8px;align-items:center}
.inline .suffix{font-size:14px;color:var(--tx2);white-space:nowrap;font-weight:600}
.row2{display:grid;gap:12px;grid-template-columns:1fr}
@media(min-width:520px){.row2{grid-template-columns:1fr 1fr}}

/* 선택 버튼(라디오 대체) */
.seg{display:flex;gap:6px;flex-wrap:wrap}
.seg button{
  flex:1 1 auto;min-width:88px;padding:10px 12px;border:1px solid var(--line);background:#fff;
  border-radius:10px;font-size:14px;font-weight:600;color:var(--tx2);cursor:pointer;font-family:inherit;
}
.seg button.on{background:var(--pri);border-color:var(--pri);color:#fff}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{
  padding:7px 12px;border:1px solid var(--line);background:#fff;border-radius:999px;
  font-size:13px;font-weight:600;color:var(--tx2);cursor:pointer;font-family:inherit;
}
.chip.on{background:var(--pri-bg);border-color:var(--pri);color:var(--pri-d)}

label.check{
  display:flex;gap:9px;align-items:flex-start;padding:9px 0;font-size:14.5px;cursor:pointer;
}
label.check input{margin:3px 0 0;width:18px;height:18px;accent-color:var(--pri);flex:none}

/* ---------- 결과 ---------- */
.result-top{
  background:linear-gradient(135deg,#16233c,#24365c);
  color:#fff;border-radius:var(--radius);padding:22px 18px;margin:0 0 14px;
}
.result-top .k{font-size:13px;opacity:.75;font-weight:600;letter-spacing:.02em}
.result-top .big{font-size:38px;font-weight:800;line-height:1.15;margin:4px 0 2px;letter-spacing:-.03em}
.result-top .sub{font-size:14px;opacity:.85}
.result-top .badge{
  display:inline-block;background:rgba(255,255,255,.16);border-radius:999px;
  padding:4px 11px;font-size:12px;font-weight:700;margin-bottom:8px
}
.save-line{
  margin-top:12px;background:rgba(16,185,129,.18);border:1px solid rgba(16,185,129,.35);
  border-radius:10px;padding:10px 12px;font-size:14px;font-weight:700;
}
.save-line em{font-style:normal;font-size:19px}

.kv{display:flex;justify-content:space-between;gap:10px;padding:9px 0;border-bottom:1px dashed var(--line2);font-size:14.5px}
.kv:last-child{border-bottom:0}
.kv .k{color:var(--tx2)}
.kv .v{font-weight:700;font-variant-numeric:tabular-nums}
.kv.total{border-top:2px solid var(--tx);border-bottom:0;margin-top:6px;padding-top:12px;font-size:17px}
.kv.total .v{font-size:20px;color:var(--pri-d)}

/* ---------- 표 ---------- */
.tbl-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;margin:0 0 8px;
  border:1px solid var(--line);border-radius:10px;background:#fff}
.tbl-wrap::after{content:"← 좌우로 밀어서 보세요";display:block;font-size:11px;color:var(--tx3);
  padding:6px 10px;border-top:1px dashed var(--line2)}
@media(min-width:860px){.tbl-wrap::after{display:none}}
table{width:100%;border-collapse:collapse;font-size:14px}
.tbl-wrap table{min-width:640px}
th,td{padding:10px 8px;text-align:right;border-bottom:1px solid var(--line2);white-space:nowrap}
th{background:#fafbfe;color:var(--tx2);font-size:12.5px;font-weight:700}
th:first-child,td:first-child{text-align:left;white-space:normal}
tbody tr.best{background:var(--pri-bg)}
tbody tr.best td{font-weight:700}
td .rank{display:inline-block;width:22px;height:22px;line-height:22px;text-align:center;
  border-radius:6px;background:var(--line2);color:var(--tx2);font-size:12px;font-weight:800;margin-right:6px}
tbody tr.best td .rank{background:var(--pri);color:#fff}
.num{font-variant-numeric:tabular-nums}
.pill{display:inline-block;font-size:11px;font-weight:700;border-radius:999px;padding:2px 7px;
  background:var(--line2);color:var(--tx2);margin-left:4px}
.pill.g{background:var(--ok-bg);color:var(--ok)}
.pill.o{background:var(--warn-bg);color:var(--warn)}
.pill.b{background:var(--pri-bg);color:var(--pri-d)}

/* ---------- 누진 구간 막대 ---------- */
.tiers{display:flex;height:14px;border-radius:999px;overflow:hidden;background:var(--line2);margin:10px 0 6px}
.tiers i{display:block;height:100%}
.tiers i.t1{background:#4ade80}
.tiers i.t2{background:#fbbf24}
.tiers i.t3{background:#f87171}
.tiers i.t4{background:#7f1d1d}
.tier-legend{display:flex;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--tx2)}
.tier-legend span{display:flex;align-items:center;gap:5px}
.tier-legend b{width:9px;height:9px;border-radius:3px;display:inline-block}

/* ---------- 알림 박스 ---------- */
.note{background:#fbfcff;border:1px solid var(--line);border-left:3px solid var(--pri);
  border-radius:10px;padding:12px 14px;font-size:14px;color:var(--tx2);margin:12px 0}
.note.warn{border-left-color:var(--warn);background:var(--warn-bg)}
.note.ok{border-left-color:var(--ok);background:var(--ok-bg)}
.note b{color:var(--tx)}

/* ---------- 버튼 ---------- */
.btn{
  display:inline-block;background:var(--pri);color:#fff;border:0;border-radius:10px;
  padding:12px 18px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit;text-align:center;
}
.btn:hover{background:var(--pri-d);text-decoration:none;color:#fff}
.btn.ghost{background:#fff;color:var(--tx2);border:1px solid var(--line)}
.btn.ghost:hover{border-color:var(--pri);color:var(--pri);background:#fff}
.btn.sm{padding:8px 13px;font-size:13px;border-radius:8px}
.btn-row{display:flex;gap:8px;flex-wrap:wrap;margin:14px 0 0}

/* ---------- 광고 자리 ---------- */
.adslot{
  border:1px dashed var(--line);border-radius:10px;background:#fafbfe;color:var(--tx3);
  text-align:center;padding:22px 10px;font-size:12.5px;margin:18px 0;
}

/* ---------- 설명 글 ---------- */
.article{font-size:15.5px;color:#26324a}
.article h2{font-size:20px;margin-top:30px}
.article h3{font-size:16.5px}
.article p{margin:10px 0}
.article ul,.article ol{padding-left:20px;margin:10px 0}
.article li{margin:5px 0}
.faq details{border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;margin:8px 0}
.faq summary{cursor:pointer;font-weight:700;padding:13px 0;font-size:15px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--tx3);font-weight:400}
.faq details[open] summary::after{content:"-"}
.faq details p{margin:0 0 14px;color:var(--tx2);font-size:14.5px}

.related{display:grid;gap:8px;grid-template-columns:1fr;margin:12px 0}
@media(min-width:520px){.related{grid-template-columns:1fr 1fr}}
.related a{display:flex;gap:8px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:10px;padding:12px 14px;font-size:14px;font-weight:600;color:var(--tx)}
.related a:hover{border-color:var(--pri);color:var(--pri);text-decoration:none}

/* ---------- 데이터 기준일 ---------- */
.asof{font-size:12.5px;color:var(--tx3);margin:6px 0 0}
.asof a{color:var(--tx3);text-decoration:underline}

/* ---------- 진행률(체크리스트) ---------- */
.progress{height:10px;background:var(--line2);border-radius:999px;overflow:hidden;margin:8px 0}
.progress i{display:block;height:100%;background:var(--ok);width:0;transition:width .25s}

/* ---------- 푸터 ---------- */
.site-foot{background:#fff;border-top:1px solid var(--line);padding:24px 0 40px;margin-top:30px;
  font-size:13px;color:var(--tx3)}
.site-foot .fl{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:10px}
.site-foot a{color:var(--tx2);font-weight:600}
.site-foot p{margin:6px 0}
.disc{font-size:12px;color:var(--tx3);line-height:1.6}

.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.hide{display:none !important}