/* base.css — reset + 서비스상세 21페이지 공통 토큰/구조. 페이지별 디자인은 각 페이지 <style>에서 재정의 */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font-body, "Noto Sans KR", sans-serif); color: var(--c-text, #1a1a1a); background: var(--c-bg, #fff); line-height: 1.7; }
img, video { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, p, dl, dd { margin: 0; }
button { font: inherit; cursor: pointer; }

.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

/* header */
.site-header { position: sticky; top: 0; z-index: 40; background: var(--c-header-bg, #fff); border-bottom: 1px solid var(--c-border, #e5e5e5); }
.header-inner { display: flex; align-items: center; gap: 24px; height: 64px; }
.header-inner .logo { font-weight: 700; font-size: 1.1rem; margin-right: auto; }
.site-nav { display: flex; gap: 20px; }
.site-nav a:hover { color: var(--c-primary, #2563eb); }
.menu-toggle { display: none; background: none; border: 0; font-size: 1.4rem; line-height: 1; }
.mobile-nav { display: none; flex-direction: column; border-top: 1px solid var(--c-border, #e5e5e5); }
.mobile-nav a { padding: 14px 20px; border-bottom: 1px solid var(--c-border, #e5e5e5); }
.mobile-nav.open { display: flex; }
@media (max-width: 760px) {
  .site-nav, .header-cta { display: none; }
  .menu-toggle { display: block; }
}

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 12px 22px; border-radius: var(--radius, 8px); font-weight: 600; border: 1px solid transparent; }
.btn-accent { background: var(--c-primary, #2563eb); color: #fff; }
.btn-outline { border-color: currentColor; }
.btn-lg { padding: 14px 28px; font-size: 1.05rem; }

/* hero */
.hero { padding: 64px 0 56px; }
.hero h1 { font-family: var(--font-heading, inherit); font-size: clamp(1.7rem, 4vw, 2.5rem); line-height: 1.3; }
.hero .badge, .badge { display: inline-block; padding: 5px 14px; border-radius: 999px; font-size: .8rem; font-weight: 600; margin-bottom: 14px; background: var(--c-badge-bg, #eef2ff); color: var(--c-primary, #2563eb); }
.hero p { margin-top: 16px; max-width: 640px; color: var(--c-muted, #555); }
.hero-cta { margin-top: 28px; display: flex; gap: 12px; flex-wrap: wrap; }

/* article content */
main article { padding: 8px 0 8px; }
main article h2 { font-family: var(--font-heading, inherit); font-size: clamp(1.3rem, 2.6vw, 1.7rem); margin: 48px 0 16px; }
main article h2:first-child { margin-top: 8px; }
main article h3 { font-size: 1.1rem; margin: 20px 0 8px; }
main article p { margin: 0 0 14px; color: var(--c-text, #1a1a1a); }
main article section + section { margin-top: 8px; }

.definition-box { background: var(--c-surface, #f6f7f9); border-left: 4px solid var(--c-primary, #2563eb); border-radius: 4px; padding: 16px 20px; margin: 16px 0; }
.callout { border: 1px solid var(--c-border, #e5e5e5); background: var(--c-surface, #f6f7f9); border-radius: var(--radius, 8px); padding: 16px 20px; margin: 16px 0; }
table.data-table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: .95rem; }
table.data-table th, table.data-table td { border: 1px solid var(--c-border, #e5e5e5); padding: 10px 12px; text-align: left; }
table.data-table th { background: var(--c-surface, #f6f7f9); }
.checklist li { position: relative; padding-left: 28px; margin-bottom: 10px; }
.checklist svg { position: absolute; left: 0; top: 2px; }
.step-list { padding: 0; }
.step-list li { display: flex; gap: 14px; margin-bottom: 18px; }
.step-list .step-no { flex: none; width: 34px; height: 34px; border-radius: 50%; background: var(--c-primary, #2563eb); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: .9rem; }
.faq-list details { border: 1px solid var(--c-border, #e5e5e5); border-radius: var(--radius, 8px); padding: 12px 16px; margin-bottom: 10px; }
.faq-list summary { font-weight: 600; cursor: pointer; }
.term-list dt { font-weight: 700; margin-top: 12px; }
.term-list dd { margin: 4px 0 0; color: var(--c-muted, #555); }
.img-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; max-width: 640px; margin: 16px auto; }
.img-gallery picture, .img-gallery img { border-radius: var(--radius, 8px); overflow: hidden; }
.img-gallery img { width: 100%; height: 220px; object-fit: cover; }
figure { margin: 0; }
figcaption { font-size: .85rem; color: var(--c-muted, #777); margin-top: 6px; }

/* Related pages */
.related-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin: 16px 0; }
.related-card { display: block; border: 1px solid var(--c-border, #e5e5e5); border-radius: var(--radius, 8px); padding: 18px; font-weight: 700; font-size: .92rem; transition: .2s; }
.related-card:hover { border-color: var(--c-primary, #2563eb); color: var(--c-primary, #2563eb); }

/* cta */
.cta { padding: 56px 0; text-align: center; background: var(--c-cta-bg, #f6f7f9); }
.cta h2 { font-size: 1.5rem; margin-bottom: 12px; }
.cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; margin-top: 20px; }

/* footer */
.site-footer { background: var(--c-footer-bg, #16181d); color: var(--c-footer-text, #cfd2d8); padding: 40px 0 24px; }
.biz-info { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px 20px; }
.biz-info > div { display: flex; gap: 8px; font-size: .9rem; }
.biz-info dt { color: var(--c-footer-muted, #8a8f99); flex: none; width: 96px; }
.biz-info dd a { text-decoration: underline; }
.copyright { margin-top: 24px; font-size: .8rem; color: var(--c-footer-muted, #8a8f99); }