/* ═══ 구조·디자인 참고 출처 ═══
   참고 사이트: https://storeinterior.jibsarepair.com/
   정보구조(IA): Header(로고+메뉴4개) → Hero(대제목+부제+CTA2) → Statement(선언문+이미지)
     → Trust(사업자정보) → Index(서비스 카드 그리드) → Experience(시공사례 갤러리 2x3)
     → Process(4단계) → Guide(강점 카드) → Expertise(타겟업종 4카드) → FAQ(아코디언) → CTA → Footer
   레이아웃: 2~4열 반응형 그리드, 여유로운 섹션 간 여백, 각진 모서리(sharp corners)
   컬러: 사용자 요청으로 흑백 모노톤(차콜/화이트, 컬러 포인트 없음)으로 재설정 — 2026-08-18
   폰트: 사용자 요청으로 Paperlogy/Pretendard 대신 Noto Serif KR(제목) + Noto Sans KR(본문)로 교체
   ═══════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Serif+KR:wght@500;600;700;900&family=Noto+Sans+KR:wght@400;500;600;700&display=swap');

:root {
    --ink: #111111;
    --ink-soft: #333333;
    --muted: #767676;
    --paper: #ffffff;
    --paper-alt: #f7f7f7;
    --line: #e5e5e5;
    --accent: #111111;
    --accent-ink: #000000;
    --max: 1180px;
    font-family: "Noto Sans KR", -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    background: var(--paper);
    color: var(--ink);
    font-family: "Noto Sans KR", -apple-system, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }

h1, h2, h3 { margin: 0; letter-spacing: -0.01em; font-weight: 700; font-family: "Noto Serif KR", serif; }
h2 { font-size: clamp(26px, 3.4vw, 40px); letter-spacing: -0.01em; }
h3 { font-size: 19px; }
.eyebrow {
    font-size: 12px; letter-spacing: 0.28em; text-transform: uppercase;
    color: var(--muted); font-weight: 600; margin-bottom: 14px; display: block;
    font-family: "Noto Sans KR", sans-serif;
}
.section { padding: 96px 0; }
.section-alt { background: var(--paper-alt); }
.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head p { color: var(--muted); font-size: 16px; margin-top: 14px; }

/* Header */
.site-header {
    position: sticky; top: 0; z-index: 40; background: rgba(255,255,255,.92);
    backdrop-filter: blur(6px); border-bottom: 1px solid var(--line);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { font-size: 20px; font-weight: 700; letter-spacing: -0.01em; font-family: "Noto Serif KR", serif; }
.logo span { color: var(--muted); font-family: "Noto Sans KR", sans-serif; }
.nav { display: flex; gap: 32px; }
.nav a { font-size: 15px; font-weight: 600; color: var(--ink-soft); }
.nav a:hover { text-decoration: underline; text-underline-offset: 4px; }
.header-cta {
    border: 1px solid var(--ink); padding: 10px 20px; font-size: 14px; font-weight: 700;
}
.header-cta:hover { background: var(--ink); color: var(--paper); }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); padding: 8px 12px; font-weight: 700; }

@media (max-width: 860px) {
    .nav { position: absolute; top: 76px; left: 0; right: 0; background: var(--paper); flex-direction: column;
        gap: 0; border-bottom: 1px solid var(--line); display: none; }
    .nav.open { display: flex; }
    .nav a { padding: 16px 24px; border-top: 1px solid var(--line); }
    .header-cta { display: none; }
    .nav-toggle { display: block; }
}

/* Hero */
.hero { padding: 88px 0 72px; }
.hero h1 { font-size: clamp(34px, 5.4vw, 60px); line-height: 1.15; max-width: 820px; }
.hero .sub { font-size: 17px; color: var(--ink-soft); margin: 22px 0 34px; max-width: 620px; }
.hero-ctas { display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
    display: inline-block; padding: 15px 28px; font-weight: 700; font-size: 15px;
    border: 1px solid var(--ink); background: var(--ink); color: var(--paper);
    transition: background .15s, color .15s;
}
.btn:hover { background: var(--paper); color: var(--ink); }
.btn-outline { background: transparent; color: var(--ink); }
.btn-outline:hover { background: var(--ink); color: var(--paper); }
.hero-figure { margin-top: 56px; border: 1px solid var(--line); }
.hero-figure img { width: 100%; height: 420px; object-fit: cover; object-position: left center; }
@media (max-width: 640px) {
    .hero-figure img { height: auto; object-fit: contain; }
}

/* Statement */
.statement { display: grid; grid-template-columns: 1.1fr 1fr; gap: 56px; align-items: center; }
.statement blockquote { font-size: clamp(22px, 2.6vw, 32px); font-weight: 700; line-height: 1.4; margin: 0; font-family: "Noto Serif KR", serif; }
.statement figure { margin: 0; border: 1px solid var(--line); overflow: hidden; }
.statement img { height: 340px; object-fit: cover; width: 100%; }
@media (max-width: 860px) { .statement { grid-template-columns: 1fr; } }

/* Trust */
.trust-grid { display: grid; grid-template-columns: repeat(4, 1fr); border: 1px solid var(--line); }
.trust-grid div { padding: 26px 24px; border-left: 1px solid var(--line); }
.trust-grid div:first-child { border-left: none; }
.trust-grid dt { font-size: 12px; color: var(--muted); letter-spacing: 0.06em; margin-bottom: 8px; }
.trust-grid dd { margin: 0; font-weight: 700; font-size: 16px; }
@media (max-width: 760px) { .trust-grid { grid-template-columns: 1fr 1fr; } .trust-grid div:nth-child(3) { border-left: none; } }

/* Card grid (Index / services) */
.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.card { background: var(--paper); padding: 34px 28px; }
.card .num { font-size: 13px; color: var(--muted); font-weight: 700; letter-spacing: 0.1em; font-family: "Noto Sans KR", sans-serif; }
.card h3 { margin: 14px 0 10px; }
.card p { color: var(--muted); font-size: 14.5px; margin: 0; }
@media (max-width: 860px) { .card-grid { grid-template-columns: 1fr; } }

/* Experience (case gallery) */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.case-card { border: 1px solid var(--line); background: var(--paper); }
.case-card .thumb { aspect-ratio: 4/3; overflow: hidden; }
.case-card img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.case-card:hover img { transform: scale(1.05); }
.case-card .body { padding: 20px; }
.case-card .meta { font-size: 12px; color: var(--muted); letter-spacing: 0.04em; margin-bottom: 8px; }
.case-card h3 { font-size: 17px; }
.case-card .more { display: inline-block; margin-top: 14px; font-size: 13px; font-weight: 700; color: var(--ink); font-family: "Noto Sans KR", sans-serif; }
.case-card:hover .more { text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 960px) { .case-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .case-grid { grid-template-columns: 1fr; } }

/* Process */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; border-top: 1px solid var(--line); }
.process-grid li { list-style: none; padding: 30px 22px 30px 0; border-right: 1px solid var(--line); }
.process-grid li:last-child { border-right: none; }
.process-grid .step { font-family: "Noto Serif KR", serif; font-size: 34px; font-weight: 700; color: var(--line); }
.process-grid h3 { margin: 10px 0 8px; font-size: 17px; }
.process-grid p { color: var(--muted); font-size: 14px; margin: 0; }
@media (max-width: 860px) { .process-grid { grid-template-columns: 1fr 1fr; } .process-grid li { border-right: none; border-bottom: 1px solid var(--line); } }

/* Strength (Guide 대체) */
.strength-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.strength-grid .card { border: 1px solid var(--line); padding: 28px 22px; }
@media (max-width: 860px) { .strength-grid { grid-template-columns: 1fr 1fr; } }

/* Expertise (target industries) */
.industry-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.industry-grid .card { border: 1px solid var(--line); text-align: left; padding: 26px 22px; }
.industry-grid h3 { font-size: 16px; }
@media (max-width: 860px) { .industry-grid { grid-template-columns: 1fr 1fr; } }

/* FAQ */
.faq-list { border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { padding: 22px 4px; font-weight: 700; font-size: 16px; cursor: pointer; list-style: none; display: flex; justify-content: space-between; gap: 20px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; color: var(--ink); font-size: 20px; font-weight: 400; }
.faq-item[open] summary::after { content: "-"; }
.faq-item .a { padding: 0 4px 22px; color: var(--ink-soft); font-size: 15px; max-width: 760px; }

/* Final CTA */
.cta-band { background: var(--ink); color: var(--paper); text-align: center; padding: 88px 24px; }
.cta-band h2 { color: var(--paper); max-width: 680px; margin: 0 auto; }
.cta-band .sub { color: #b3b3b3; margin: 18px 0 32px; }
.cta-band .btn { background: var(--paper); border-color: var(--paper); color: var(--ink); }
.cta-band .btn:hover { background: transparent; color: var(--paper); }

/* Footer */
.site-footer { background: var(--paper-alt); border-top: 1px solid var(--line); padding: 56px 0 28px; font-size: 14px; color: var(--muted); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
.footer-grid h4 { color: var(--ink); font-size: 14px; margin-bottom: 14px; font-family: "Noto Sans KR", sans-serif; font-weight: 700; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.footer-grid a:hover { text-decoration: underline; text-underline-offset: 3px; }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 20px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.site-footer .copy { margin: 0; font-size: 12.5px; }
.footer-bottom-link { font-size: 12.5px; color: var(--muted); }
.footer-bottom-link:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
@media (max-width: 760px) { .footer-grid { grid-template-columns: 1fr; } }

/* Floating CTA */
.floating-bar {
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 50; background: var(--ink);
    display: flex; border-top: 1px solid var(--line);
}
.floating-bar a { flex: 1; text-align: center; padding: 16px 8px; color: var(--paper); font-weight: 700; font-size: 14px; border-left: 1px solid #333; }
.floating-bar a:first-child { border-left: none; background: var(--paper); color: var(--ink); }
@media (min-width: 861px) { .floating-bar { display: none; } }
body { padding-bottom: 0; }
@media (max-width: 860px) { body { padding-bottom: 58px; } }

/* Caption gallery (E-1) */
.caption-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin: 32px 0; }
.caption-grid figure { margin: 0; border: 1px solid var(--line); background: var(--paper); }
.caption-grid img { width: 100%; aspect-ratio: 3/4; object-fit: cover; }
.caption-grid figcaption { padding: 10px 12px; font-size: 13px; font-weight: 700; color: var(--ink-soft); }
@media (max-width: 700px) { .caption-grid { grid-template-columns: 1fr 1fr; } }

/* Inner page (NSEO / case detail) */
.breadcrumb { font-size: 13px; color: var(--muted); padding-top: 22px; padding-bottom: 22px; }
.breadcrumb a:hover { text-decoration: underline; text-underline-offset: 3px; }
.page-head { padding: 24px 0 40px; border-bottom: 1px solid var(--line); }
.page-head h1 { font-size: clamp(28px, 4vw, 42px); }
.page-head .meta { margin-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.page-head .meta span { border: 1px solid var(--line); padding: 6px 14px; font-size: 13px; color: var(--ink-soft); }
.article { max-width: 760px; margin: 0 auto; padding: 56px 24px; }
.article h2 { font-size: 22px; margin: 40px 0 16px; }
.article h2:first-child { margin-top: 0; }
.article p { font-size: 16px; color: var(--ink-soft); margin: 0 0 18px; }
.article figure { margin: 28px 0; border: 1px solid var(--line); overflow: hidden; }
.article figure img { display: block; width: 100%; height: auto; }
.article figcaption { padding: 10px 14px; font-size: 13px; color: var(--muted); border-top: 1px solid var(--line); }
.article ul.summary { padding-left: 20px; }
.article .quote { border-left: 3px solid var(--ink); padding: 18px 24px; margin: 32px 0; background: var(--paper-alt); font-style: italic; }
.article .quote .sig { display: block; margin-top: 10px; font-style: normal; font-size: 13px; color: var(--muted); }
.related { max-width: 760px; margin: 0 auto 64px; padding: 0 24px; display: flex; gap: 16px; flex-wrap: wrap; box-sizing: border-box; }
.related a { border: 1px solid var(--line); padding: 12px 18px; font-size: 14px; font-weight: 700; }
.related a:hover { border-color: var(--ink); background: var(--ink); color: var(--paper); }