/* 전기차 계산소 — 공통 스타일 */
:root {
  --primary: #0b7a4b;
  --primary-dark: #085c39;
  --primary-light: #e6f4ee;
  --text: #1f2937;
  --text-muted: #6b7280;
  --bg: #ffffff;
  --bg-soft: #f7f9f8;
  --border: #e5e7eb;
  --accent: #f59e0b;
  --radius: 12px;
  --maxw: 860px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.75;
  word-break: keep-all;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* 헤더 */
header.site-header {
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.header-inner {
  max-width: var(--maxw); margin: 0 auto; padding: 0 20px;
  display: flex; align-items: center; justify-content: space-between; height: 60px;
}
.logo { font-size: 1.2rem; font-weight: 800; color: var(--primary); }
.logo span { color: var(--text); }
nav.main-nav { display: flex; gap: 18px; font-size: 0.95rem; }
nav.main-nav a { color: var(--text); font-weight: 500; }
nav.main-nav a:hover { color: var(--primary); text-decoration: none; }
@media (max-width: 640px) {
  nav.main-nav { gap: 12px; font-size: 0.85rem; }
  .logo { font-size: 1.05rem; }
}

/* 레이아웃 */
main { max-width: var(--maxw); margin: 0 auto; padding: 32px 20px 64px; }
.hero {
  background: linear-gradient(135deg, var(--primary-light), #f0fdf4);
  border-radius: var(--radius);
  padding: 40px 28px; margin-bottom: 36px; text-align: center;
}
.hero h1 { font-size: 1.9rem; line-height: 1.35; margin-bottom: 12px; }
.hero p { color: var(--text-muted); max-width: 560px; margin: 0 auto; }

h1 { font-size: 1.7rem; line-height: 1.4; margin-bottom: 16px; }
h2 { font-size: 1.35rem; margin: 36px 0 14px; padding-top: 8px; }
h3 { font-size: 1.1rem; margin: 26px 0 10px; }
p { margin-bottom: 14px; }
ul, ol { margin: 0 0 16px 22px; }
li { margin-bottom: 6px; }

/* 카드 그리드 */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; margin: 24px 0; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }
.card {
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; background: var(--bg); transition: box-shadow .2s, transform .2s;
  display: block; color: var(--text);
}
.card:hover { box-shadow: 0 6px 20px rgba(0,0,0,.08); transform: translateY(-2px); text-decoration: none; }
.card .card-icon { font-size: 1.8rem; margin-bottom: 10px; display: block; }
.card h3 { margin: 0 0 6px; color: var(--primary-dark); }
.card p { color: var(--text-muted); font-size: 0.92rem; margin: 0; }

/* 계산기 */
.calc-box {
  background: var(--bg-soft); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px; margin: 24px 0;
}
.calc-box .field { margin-bottom: 18px; }
.calc-box label { display: block; font-weight: 600; margin-bottom: 6px; font-size: 0.95rem; }
.calc-box .hint { font-size: 0.82rem; color: var(--text-muted); margin-top: 4px; }
.calc-box input[type="number"], .calc-box select {
  width: 100%; padding: 11px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-size: 1rem; background: #fff;
}
.calc-box input:focus, .calc-box select:focus { outline: 2px solid var(--primary); border-color: transparent; }
.calc-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 560px) { .calc-row { grid-template-columns: 1fr; } }
button.calc-btn {
  width: 100%; padding: 14px; background: var(--primary); color: #fff;
  border: none; border-radius: 8px; font-size: 1.05rem; font-weight: 700; cursor: pointer;
}
button.calc-btn:hover { background: var(--primary-dark); }
.result-box {
  display: none; margin-top: 22px; padding: 22px;
  background: #fff; border: 2px solid var(--primary); border-radius: var(--radius);
}
.result-box.show { display: block; }
.result-main { font-size: 1.5rem; font-weight: 800; color: var(--primary-dark); margin-bottom: 8px; }
.result-detail { font-size: 0.92rem; color: var(--text-muted); }
.result-detail table { margin-top: 10px; }

/* 표 */
table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 0.93rem; }
th, td { border: 1px solid var(--border); padding: 10px 12px; text-align: left; }
th { background: var(--primary-light); font-weight: 700; }
tr:nth-child(even) td { background: var(--bg-soft); }
.table-wrap { overflow-x: auto; }

/* 알림/참고 박스 */
.notice {
  background: #fffbeb; border-left: 4px solid var(--accent);
  padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 18px 0; font-size: 0.92rem;
}
.tip {
  background: var(--primary-light); border-left: 4px solid var(--primary);
  padding: 14px 18px; border-radius: 0 8px 8px 0; margin: 18px 0; font-size: 0.92rem;
}

/* 글 목록 */
.post-list { list-style: none; margin: 0; }
.post-list li { border-bottom: 1px solid var(--border); padding: 16px 0; margin: 0; }
.post-list a { font-weight: 600; font-size: 1.05rem; color: var(--text); }
.post-list a:hover { color: var(--primary); }
.post-list .excerpt { font-size: 0.9rem; color: var(--text-muted); margin: 4px 0 0; }
.post-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 24px; }

/* 관련 글 */
.related { margin-top: 48px; padding-top: 24px; border-top: 2px solid var(--border); }
.related h2 { margin-top: 0; }

/* 푸터 */
footer.site-footer {
  border-top: 1px solid var(--border); background: var(--bg-soft);
  margin-top: 40px; padding: 28px 20px; font-size: 0.88rem; color: var(--text-muted);
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; margin-bottom: 10px; }
.footer-links a { color: var(--text-muted); }

/* 빵부스러기 */
.breadcrumb { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 18px; }