/* GAS 우리동네 도시가스 · mountain.css(2026-10-19 서클 정본) 복제, 색만 C1 파랑/주황 */
:root{--ink:#1c2230;--muted:#5c6577;--line:#e2e7ef;--bg:#fff;--card:#f3f6fb;--accent:#1e56b8;--accent2:#f04e23;--mark:#fff3b0;--radius:12px}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:"Pretendard","Apple SD Gothic Neo","Noto Sans KR",system-ui,sans-serif;font-size:17px;line-height:1.75;word-break:keep-all}
article{max-width:760px;margin:0 auto;padding:24px 16px 48px}
h1{font-size:1.5rem;line-height:1.35;margin:0 0 16px;letter-spacing:-.01em}
h2{font-size:1.2rem;margin:40px 0 12px;padding-left:12px;border-left:4px solid var(--accent);line-height:1.4}
h2.sr-only{position:absolute;left:-9999px}
p{margin:0 0 14px}
p.intro{font-size:1.02rem}
mark{background:var(--mark);padding:0 .2em;border-radius:3px;font-weight:600}
a{color:var(--accent);text-decoration:underline;text-underline-offset:3px}

.quick-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin:20px 0 8px}
.quick-card table{width:100%;border-collapse:collapse;font-size:.95rem;background:#fff;border-radius:8px;overflow:hidden}
.quick-card caption{text-align:left;font-weight:700;padding:0 0 8px;color:var(--ink)}
.quick-card th,.quick-card td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.quick-card th{background:#e6edf8;font-weight:600;white-space:nowrap}
.quick-card tbody tr:last-child td{border-bottom:0}
.quick-card td:first-child{white-space:nowrap;color:var(--muted);width:30%}
.course-table td:first-child,.peak-table td:first-child{width:auto;color:var(--ink);font-weight:600}
.btns{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0 10px}
.btn{display:inline-block;padding:10px 14px;border-radius:999px;border:1px solid var(--accent);color:var(--accent);text-decoration:none;font-size:.92rem;font-weight:600;background:#fff}
.btn.primary{background:var(--accent);color:#fff}
.btn:active{transform:translateY(1px)}
p.verified{font-size:.82rem;color:var(--muted);margin:0}

table.course-table{width:100%;border-collapse:collapse;font-size:.92rem;margin:8px 0 16px}
table.course-table th,table.course-table td{padding:8px 8px;border-bottom:1px solid var(--line);text-align:left}
table.course-table th{background:#e6edf8;font-weight:600}
table.course-table caption{text-align:left;font-weight:700;padding:0 0 6px}

ol.steps{counter-reset:s;list-style:none;padding:0;margin:8px 0 18px}
ol.steps li{position:relative;padding:8px 0 8px 40px;border-bottom:1px dashed var(--line)}
ol.steps li::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:9px;width:26px;height:26px;border-radius:50%;background:var(--accent);color:#fff;font-weight:700;font-size:.85rem;display:flex;align-items:center;justify-content:center}
ul.guide{padding-left:0;list-style:none;margin:8px 0 18px}
ul.guide li{padding:8px 12px;margin:6px 0;background:var(--card);border-radius:8px;border-left:3px solid var(--accent2)}

dl.faq{margin:8px 0 24px}
dl.faq dt{font-weight:700;margin:16px 0 4px;padding-left:22px;position:relative}
dl.faq dt::before{content:"Q";position:absolute;left:0;color:var(--accent2);font-weight:800}
dl.faq dd{margin:0 0 0 22px;color:#2a3242}

.related{margin:36px 0 0;padding:16px;border:1px solid var(--line);border-radius:var(--radius)}
.related ul{margin:0;padding-left:18px}
.related li{margin:4px 0}
footer.source{margin-top:28px;padding-top:14px;border-top:1px solid var(--line);font-size:.82rem;color:var(--muted)}

@media (max-width:480px){
  body{font-size:16px}
  h1{font-size:1.3rem}
  .quick-card{padding:12px}
  .quick-card th,.quick-card td{padding:8px 8px;font-size:.9rem}
  table.course-table{display:block;overflow-x:auto;white-space:nowrap}
}

/* 추가: 링크박스·CTA */
.arr{display:inline-block;margin-left:4px;font-weight:800}
.btn.primary{box-shadow:0 2px 0 #163f8a}
.btn:hover{filter:brightness(.95)}
.linkbox{display:flex;flex-wrap:wrap;gap:8px;align-items:center;background:#fbf8ef;border:1px dashed #d8c48a;border-radius:10px;padding:10px 12px;margin:6px 0 20px;font-size:.92rem}
.linkbox strong{color:#7a5a12;margin-right:4px}
.linkbox a{background:#fff;border:1px solid #e6d9b3;border-radius:999px;padding:5px 11px;text-decoration:none;color:#5a4410;font-weight:600}
.cta-card{display:grid;gap:10px;margin:12px 0 18px}
.cta{display:grid;grid-template-columns:1fr auto;grid-template-rows:auto auto;align-items:center;gap:0 10px;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:linear-gradient(180deg,#fff,#f3f6fb);text-decoration:none;color:var(--ink);box-shadow:0 1px 2px rgba(0,0,0,.04)}
.cta strong{font-size:1rem;color:var(--accent)}
.cta span:not(.arr){grid-column:1;font-size:.85rem;color:var(--muted)}
.cta .arr{grid-column:2;grid-row:1/3;font-size:1.6rem;color:var(--accent2)}
.cta:hover{border-color:var(--accent)}
.related h2{font-size:1.05rem;margin:0 0 10px;border:0;padding:0}
@media (min-width:600px){.cta-card{grid-template-columns:1fr 1fr 1fr}.cta{grid-template-rows:auto auto}}