/* 공장기숙사집수리 — Industrial Living Repair × Facility Management × Premium Construction Editorial */

:root {
  --bg: #f5f6f7;
  --surface: #ffffff;
  --concrete: #e7e9eb;
  --concrete-dark: #d3d7da;
  --steel: #4b5563;
  --steel-dark: #2b3138;
  --ink: #1e2124;
  --ink-soft: #565c61;
  --line: #d7dade;
  --accent: #a8532e;
  --accent-dark: #833f22;
  --radius: 4px;
  --max: 1200px;
  font-size: 16px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Malgun Gothic", "Apple SD Gothic Neo", "Pretendard", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
h1, h2, h3 { line-height: 1.3; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 .6em; }
h1 { font-size: clamp(1.9rem, 5vw, 3rem); word-break: keep-all; }
h2 { font-size: clamp(1.4rem, 3.2vw, 2rem); word-break: keep-all; }
h3 { font-size: clamp(1.1rem, 2.4vw, 1.3rem); word-break: keep-all; }
p { margin: 0 0 1em; word-break: keep-all; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.container { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; }
main { display: block; }
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; background: rgba(250,248,245,.96); backdrop-filter: blur(6px); border-bottom: 1px solid var(--line); }
.site-header__inner { max-width: var(--max); margin: 0 auto; padding: .85rem 1.25rem; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.site-header__logo { font-weight: 800; font-size: 1.15rem; letter-spacing: -0.02em; text-decoration: none; color: var(--ink); }
.site-header__toggle { display: flex; flex-direction: column; justify-content: center; gap: 4px; width: 40px; height: 40px; background: none; border: 1px solid var(--line); border-radius: var(--radius); cursor: pointer; }
.site-header__toggle span { display: block; width: 18px; height: 2px; background: var(--ink); margin: 0 auto; }
.site-nav { display: flex; align-items: center; gap: 1.5rem; font-size: .95rem; font-weight: 600; }
.site-nav a { text-decoration: none; padding: .4rem 0; }
.site-nav a[aria-current="page"] { color: var(--accent); }
.site-nav__cta { background: var(--accent); color: #fff !important; padding: .55rem 1.1rem !important; border-radius: var(--radius); }
@media (max-width: 860px) {
  .site-header__toggle { display: flex; }
  .site-nav { position: fixed; inset: 61px 0 0 0; background: var(--surface); flex-direction: column; align-items: stretch; padding: 1.25rem; gap: 0; transform: translateX(100%); transition: transform .25s ease; overflow-y: auto; }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav a { padding: .95rem .25rem; border-bottom: 1px solid var(--line); font-size: 1.05rem; min-height: 44px; }
  .site-nav__cta { text-align: center; margin-top: .75rem; }
}
@media (min-width: 861px) { .site-header__toggle { display: none; } }

/* Breadcrumb */
.breadcrumb { max-width: var(--max); margin: 0 auto; padding: .9rem 1.25rem 0; font-size: .82rem; color: var(--ink-soft); }
.breadcrumb ol { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .35rem; }
.breadcrumb li:not(:last-child)::after { content: '/'; margin-left: .35rem; color: var(--line); }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }

/* Hero */
.hero { position: relative; padding: 2.5rem 0 3rem; background: var(--concrete); overflow: hidden; }
.hero__inner { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem; display: grid; grid-template-columns: 1.05fr .95fr; gap: 2.5rem; align-items: center; }
.hero__eyebrow { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .06em; color: var(--accent); text-transform: uppercase; margin-bottom: .75rem; }
.hero__lead { font-size: 1.05rem; color: var(--ink-soft); max-width: 46ch; }
.hero__media img { border-radius: var(--radius); }
.hero__ctas { display: flex; gap: .75rem; margin-top: 1.5rem; flex-wrap: wrap; }
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; gap: 1.5rem; }
  .hero__media { order: -1; }
}

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: .85rem 1.5rem; border-radius: var(--radius); text-decoration: none; font-weight: 700; font-size: .98rem; min-height: 44px; border: 2px solid transparent; }
.btn--primary { background: var(--accent); color: #fff; }
.btn--primary:hover { background: var(--accent-dark); }
.btn--ghost { border-color: var(--ink); color: var(--ink); }

/* Generic section rhythm */
section.block { padding: 3rem 0; }
section.block.alt { background: var(--surface); }
.section-head { max-width: 62ch; margin-bottom: 1.75rem; }
.section-head p { color: var(--ink-soft); }

/* Prose content */
.prose > .container, .prose { max-width: var(--max); margin: 0 auto; padding: 3rem 1.25rem; }
.prose h2 { margin-top: 2.2em; }
.prose h2:first-child { margin-top: 0; }
.answer-lead { font-size: 1.08rem; background: var(--surface); border-left: 4px solid var(--accent); padding: 1.1rem 1.3rem; border-radius: var(--radius); }

/* Tables */
.data-table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: .95rem; }
.data-table th, .data-table td { text-align: left; padding: .7rem .9rem; border: 1px solid var(--line); vertical-align: top; }
.data-table th { background: var(--concrete); font-weight: 700; }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* Checklist */
.checklist { list-style: none; margin: 1.5rem 0; padding: 0; display: grid; gap: .6rem; }
.checklist li { display: flex; gap: .6rem; padding: .8rem .9rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.checklist li::before { content: '✓'; color: var(--accent); font-weight: 800; flex-shrink: 0; }

/* Process flow */
.process-flow { display: flex; flex-wrap: wrap; gap: .5rem; align-items: stretch; margin: 1.75rem 0; padding: 0; list-style: none; }
.process-flow li { flex: 1 1 140px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1rem; font-weight: 600; text-align: center; position: relative; }
.process-flow li::after { content: '→'; position: absolute; right: -1.1rem; top: 50%; transform: translateY(-50%); color: var(--accent); font-weight: 800; }
.process-flow li:last-child::after { content: ''; }
@media (max-width: 700px) {
  .process-flow { flex-direction: column; }
  .process-flow li::after { content: '↓'; right: auto; left: 50%; top: auto; bottom: -1.1rem; transform: translateX(-50%); }
  .process-flow li:last-child::after { content: ''; }
}

/* Timeline (construction process) */
.timeline { list-style: none; margin: 1.75rem 0; padding: 0; border-left: 2px solid var(--line); }
.timeline li { position: relative; padding: 0 0 1.75rem 1.75rem; }
.timeline li::before { content: ''; position: absolute; left: -7px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.timeline li:last-child { padding-bottom: 0; }

/* Diagnostic grid */
.diagnostic-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; margin: 1.75rem 0; }
.diagnostic-grid .card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; }
.diagnostic-grid .card h3 { margin-bottom: .4rem; }

/* Callout */
.callout { background: var(--concrete); border-radius: var(--radius); padding: 1.2rem 1.4rem; margin: 1.75rem 0; border: 1px solid var(--concrete-dark); }
.callout p:last-child { margin-bottom: 0; }

/* Photo layout variants (section 16) */
.photo-grid { margin: 2rem 0; }
.photo-grid figcaption { font-size: .85rem; color: var(--ink-soft); margin-top: .4rem; }
.photo-grid--2x2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.photo-grid--large-3small { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1rem; }
.photo-grid--large-3small .sub-grid { display: grid; grid-template-rows: repeat(3, 1fr); gap: 1rem; }
.photo-grid--strip { display: flex; gap: 1rem; overflow-x: auto; scroll-snap-type: x mandatory; padding-bottom: .5rem; }
.photo-grid--strip figure { flex: 0 0 70%; scroll-snap-align: start; }
.photo-grid--alternating { display: grid; gap: 1.5rem; }
.photo-grid--alternating .row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; align-items: center; }
.photo-grid--alternating .row:nth-child(even) { direction: rtl; }
.photo-grid--alternating .row:nth-child(even) > * { direction: ltr; }
.photo-grid--staggered { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1rem; }
.photo-grid--staggered figure:nth-child(2n) { margin-top: 1.5rem; }
.photo-grid--collage { display: grid; grid-template-columns: repeat(6, 1fr); grid-auto-rows: 90px; gap: .6rem; }
.photo-grid--collage figure:nth-child(1) { grid-column: span 3; grid-row: span 3; }
.photo-grid--collage figure:nth-child(2) { grid-column: span 3; grid-row: span 2; }
.photo-grid--collage figure:nth-child(3) { grid-column: span 3; grid-row: span 2; }
.photo-grid--collage figure:nth-child(4) { grid-column: span 3; grid-row: span 3; }
.photo-grid img, .photo-grid picture { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); }
@media (max-width: 700px) {
  .photo-grid--2x2, .photo-grid--large-3small, .photo-grid--large-3small .sub-grid, .photo-grid--staggered, .photo-grid--collage { grid-template-columns: 1fr 1fr; }
  .photo-grid--collage { grid-auto-rows: 120px; }
  .photo-grid--collage figure { grid-column: span 1 !important; grid-row: span 2 !important; }
  .photo-grid--alternating .row { grid-template-columns: 1fr; direction: ltr !important; }
  .photo-grid--alternating .row > * { direction: ltr !important; }
}

/* Carousel */
.carousel { display: flex; gap: 1rem; overflow-x: auto; scroll-snap-type: x mandatory; padding: .5rem .1rem 1rem; margin: 0 -.1rem; }
.carousel::-webkit-scrollbar { height: 6px; }
.carousel-card { flex: 0 0 250px; scroll-snap-align: start; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; text-decoration: none; color: var(--ink); display: block; }
.carousel-card__media { aspect-ratio: 1/1; overflow: hidden; }
.carousel-card__media img { width: 100%; height: 100%; object-fit: cover; }
.carousel-card__body { padding: 1rem; }
.carousel-card__body h3 { margin-bottom: .3rem; font-size: 1.02rem; }
.carousel-card__body p { font-size: .88rem; color: var(--ink-soft); margin-bottom: .6rem; }
.carousel-card__link { font-size: .85rem; font-weight: 700; color: var(--accent); }
@media (min-width: 861px) {
  .carousel { overflow: visible; flex-wrap: wrap; }
  .carousel-card { flex: 1 1 calc(33.33% - .7rem); }
}

/* Case study / card grids */
.case-grid, .service-grid, .area-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.25rem; margin: 0 0 1.75rem; }
.case-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.case-card__media { aspect-ratio: 4/3; }
.case-card__media img { width: 100%; height: 100%; object-fit: cover; }
.case-card__body { padding: .9rem 1.1rem; }
.case-card__body h3 { font-size: 1rem; margin-bottom: .3rem; }
.case-card__body p { font-size: .87rem; color: var(--ink-soft); margin: 0; }

.service-grid, .area-grid { grid-template-columns: repeat(4, 1fr); }
.tile-card { display: block; text-decoration: none; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.tile-card__media { aspect-ratio: 1/1; }
.tile-card__media img { width: 100%; height: 100%; object-fit: cover; }
.tile-card__body { padding: .9rem 1rem; }
.tile-card__body h3 { font-size: .98rem; margin: 0; }
.hub-more { text-align: center; margin-top: .5rem; }

@media (max-width: 1000px) { .service-grid, .area-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  .case-grid { grid-template-columns: 1fr; }
  .service-grid, .area-grid { grid-template-columns: repeat(2, 1fr); gap: .8rem; }
}

/* FAQ */
.faq { max-width: var(--max); margin: 0 auto; padding: 3rem 1.25rem; }
.faq__list { display: grid; gap: .7rem; }
.faq__item { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: .3rem 1.1rem; }
.faq__item summary { cursor: pointer; padding: 1rem 0; list-style: none; display: flex; justify-content: space-between; align-items: center; gap: 1rem; min-height: 44px; }
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary h3 { margin: 0; font-size: 1rem; }
.faq__item summary::after { content: '+'; font-size: 1.3rem; color: var(--accent); flex-shrink: 0; }
.faq__item[open] summary::after { content: '−'; }
.faq__item p { padding-bottom: 1rem; color: var(--ink-soft); margin: 0; }

/* Related */
.related { max-width: var(--max); margin: 0 auto; padding: 1rem 1.25rem 3rem; }
.related__list { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: .6rem; }
.related__list a { display: inline-block; padding: .6rem 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); text-decoration: none; font-size: .9rem; font-weight: 600; }

/* CTA */
.cta { background: var(--steel-dark); color: #fff; text-align: center; padding: 3.5rem 1.25rem; }
.cta h2 { color: #fff; }
.cta p { color: #cdd2d6; max-width: 52ch; margin-left: auto; margin-right: auto; }

/* Contact hero call buttons */
.contact-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.contact-actions .btn { min-width: 160px; }

/* Footer */
.business-footer { background: var(--steel-dark); color: #cfd3d6; font-size: .82rem; }
.business-footer__inner { max-width: var(--max); margin: 0 auto; display: flex; flex-wrap: wrap; align-items: center; gap: .35rem 1rem; padding: .7rem 1.25rem; }
.business-footer__inner span:not(:last-child)::after { content: '|'; margin-left: 1rem; color: #5c636a; }

/* Landmark / area note */
.landmark-note { font-size: .85rem; color: var(--ink-soft); font-style: normal; }