/* ============================================
   석경건설 — Japanese Zen
   v11.0 · 화이트+베이지+묵색 · 와비사비 · 한자
   ============================================ */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --paper:    #FBFAF7;     /* Washi 화선지 */
  --paper-2:  #F5F1E8;     /* 베이지 */
  --paper-3:  #EFEAE0;
  --line:     #D6D0C2;
  --line-deep:#BFB8A6;

  --sumi:     #1A1A1A;     /* 묵색 */
  --sumi-2:   #333333;
  --sumi-3:   #555555;
  --silver:   #888888;
  --text-light:#999999;

  --vermilion: #C8312E;    /* 주홍 — 한자 인장색 */
  --vermilion-deep: #A1242C;

  --font-serif: 'Noto Serif KR', 'Shippori Mincho', serif;
  --font-sans: 'Inter', 'Noto Sans KR', sans-serif;
  --font-kr-sans: 'Noto Sans KR', sans-serif;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--font-serif);
  background: var(--paper);
  color: var(--sumi);
  font-size: 16px;
  line-height: 1.85;
  font-weight: 400;
  letter-spacing: 0.02em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* 화선지 텍스처 */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(214,208,194,0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(214,208,194,0.1) 0%, transparent 40%);
  z-index: -1;
  pointer-events: none;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }
ul { list-style: none; }

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(251,250,247,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}
.site-header.scrolled { border-bottom-color: var(--line); }

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
}
.logo-seal {
  width: 40px; height: 40px;
  background: var(--vermilion);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
  border-radius: 2px;
  letter-spacing: 0;
}
.logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.logo-text-kr {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.005em;
  color: var(--sumi);
  line-height: 1;
}
.logo-text-en {
  font-family: var(--font-sans);
  font-size: 9px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--silver);
  line-height: 1;
  font-weight: 500;
}

.nav-menu { display: flex; gap: 36px; }
.nav-menu a {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 500;
  color: var(--sumi-2);
  padding: 8px 0;
  position: relative;
  transition: color 0.2s ease;
}
.nav-menu a:hover, .nav-menu a.active { color: var(--vermilion); }
.nav-menu a.active::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--vermilion);
}

/* 네비 외부 링크 — 스패너하우스 */
.nav-menu a.external {
  color: var(--vermilion);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-menu a.external::before {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
}
.nav-menu a.external.spanner-house::before { content: '扳'; }
.nav-menu a.external.spanner-store::before { content: '店'; }

.nav-menu a.external .ext-arrow {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 400;
  color: var(--silver);
  transition: transform 0.2s ease, color 0.2s ease;
}
.nav-menu a.external:hover { color: var(--vermilion-deep); }
.nav-menu a.external:hover .ext-arrow {
  color: var(--vermilion);
  transform: translate(2px, -2px);
}

/* 두 외부 링크가 같은 그룹임을 표시 — 사이에 작은 점 */
.nav-menu li.external-group + li.external-group {
  position: relative;
}
.nav-menu li.external-group + li.external-group::before {
  content: '·';
  position: absolute;
  left: -3px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--line-deep);
  font-size: 14px;
  pointer-events: none;
}

.nav-cta {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  padding: 11px 24px;
  background: var(--sumi);
  color: var(--paper);
  letter-spacing: 0.06em;
  transition: background 0.2s ease;
}
.nav-cta:hover { background: var(--vermilion); }
.nav-toggle { display: none; }

/* ===== HERO ===== */
.hero {
  padding: 220px 0 140px;
  position: relative;
}

.hero-kanji {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: clamp(280px, 36vw, 500px);
  font-weight: 300;
  line-height: 0.9;
  color: var(--paper-3);
  opacity: 0.6;
  z-index: 0;
  user-select: none;
  pointer-events: none;
  letter-spacing: -0.05em;
  writing-mode: vertical-rl;
}

.hero-content { position: relative; z-index: 1; max-width: 820px; }

.hero-label {
  display: flex;
  align-items: center;
  gap: 16px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 56px;
  font-weight: 500;
}
.hero-label .line {
  width: 60px; height: 1px;
  background: var(--silver);
}
.hero-label .seal {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--vermilion);
  font-weight: 600;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(48px, 7vw, 96px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.025em;
  color: var(--sumi);
  margin-bottom: 0;
}
.hero h1 .line { display: block; }
.hero h1 .kanji {
  font-weight: 400;
  color: var(--vermilion);
  margin-right: 0.2em;
}
.hero h1 .thin {
  font-weight: 300;
  color: var(--sumi-3);
}

.hero-sub {
  margin-top: 48px;
  font-size: 17px;
  color: var(--sumi-3);
  max-width: 580px;
  line-height: 2;
  font-weight: 400;
}

.hero-sub-en {
  margin-top: 16px;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--silver);
  letter-spacing: 0.04em;
  line-height: 1.6;
  font-style: italic;
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-top: 56px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--sumi);
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: 0.04em;
  transition: gap 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}
.hero-cta:hover {
  gap: 24px;
  color: var(--vermilion);
  border-color: var(--vermilion);
}
.hero-cta .arrow {
  font-family: var(--font-sans);
  font-weight: 300;
}

/* Meta info — 한자/연/실적 */
.hero-meta {
  display: flex;
  gap: 56px;
  margin-top: 88px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
  flex-wrap: wrap;
}
.hero-meta-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.hero-meta-label {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 500;
}
.hero-meta-num {
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1;
  color: var(--sumi);
}
.hero-meta-num .unit {
  font-size: 0.4em;
  color: var(--silver);
  margin-left: 4px;
  font-weight: 400;
}

/* ===== Brush Stroke Section ===== */
.brush-section {
  padding: 160px 0;
  background: var(--paper-2);
  text-align: center;
}
.brush-quote {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4.5vw, 56px);
  font-weight: 400;
  line-height: 1.55;
  letter-spacing: -0.02em;
  color: var(--sumi);
  max-width: 880px;
  margin: 0 auto;
}
.brush-quote .vermilion { color: var(--vermilion); }
.brush-quote .thin { color: var(--silver); font-weight: 300; }
.brush-quote .underline {
  position: relative;
  display: inline-block;
}
.brush-quote .underline::after {
  content: '';
  position: absolute;
  left: 0; right: 0; bottom: -8px;
  height: 4px;
  background: var(--vermilion);
}

.brush-author {
  margin-top: 56px;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 500;
}

/* ===== Sections ===== */
section { padding: 140px 0; position: relative; }

.section-header {
  text-align: center;
  margin-bottom: 96px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}
.section-kanji {
  font-family: var(--font-serif);
  font-size: 88px;
  font-weight: 300;
  color: var(--paper-3);
  line-height: 1;
  margin-bottom: 24px;
  letter-spacing: -0.05em;
}
.section-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
  margin-bottom: 24px;
  display: block;
}
.section-title {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-bottom: 28px;
  color: var(--sumi);
}
.section-title .vermilion { color: var(--vermilion); }
.section-title .kanji { font-weight: 400; }
.section-lead {
  font-size: 17px;
  color: var(--sumi-3);
  line-height: 1.95;
  max-width: 580px;
  margin: 0 auto;
}

/* ===== Pillars — Vertical Stack ===== */
.pillars { max-width: 820px; margin: 0 auto; }
.pillar-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 56px;
  padding: 56px 0;
  border-bottom: 1px solid var(--line);
  align-items: start;
}
.pillar-row:last-child { border-bottom: none; }

.pillar-left {
  text-align: center;
}
.pillar-kanji {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 400;
  color: var(--vermilion);
  line-height: 1;
  letter-spacing: -0.04em;
}
.pillar-num {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--silver);
  margin-top: 12px;
  font-weight: 500;
}

.pillar-right h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--sumi);
}
.pillar-right p {
  font-size: 16px;
  color: var(--sumi-3);
  line-height: 1.95;
}
.pillar-right p em {
  color: var(--vermilion);
  font-style: normal;
  font-weight: 500;
}
.pillar-right h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
  color: var(--sumi);
  line-height: 1.35;
}

/* ===== Services ===== */
.services-section { background: var(--paper-2); }
.services { display: grid; grid-template-columns: 1fr 1fr; gap: 0; max-width: 1100px; margin: 0 auto; }
.service-item {
  padding: 56px 48px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.service-item:nth-child(even) { border-right: none; }
.service-item:nth-child(n+3) { border-bottom: none; }

.service-kanji {
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 400;
  color: var(--vermilion);
  line-height: 1;
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  letter-spacing: -0.04em;
}
.service-kanji small {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--silver);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 500;
}

.service-item h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
  margin-bottom: 16px;
  color: var(--sumi);
  letter-spacing: -0.02em;
}
.service-item > p {
  font-size: 15px;
  color: var(--sumi-3);
  line-height: 1.9;
  margin-bottom: 24px;
}
.service-tags {
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
  font-weight: 500;
}
.service-tags span:not(:last-child)::after { content: ' · '; color: var(--vermilion); }

/* ===== Portfolio ===== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px 40px;
  max-width: 1100px;
  margin: 0 auto;
}
.portfolio-card {
  cursor: pointer;
}
.portfolio-img {
  aspect-ratio: 4/3;
  background: var(--paper-2);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  position: relative;
  overflow: hidden;
  margin-bottom: 20px;
  transition: transform 0.4s ease;
}
.portfolio-card:hover .portfolio-img { transform: translateY(-4px); }
.portfolio-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(214,208,194,0.4) 0%, transparent 60%),
    repeating-linear-gradient(
      45deg,
      transparent 0 80px,
      rgba(214,208,194,0.3) 80px 81px
    );
}
.portfolio-img::after {
  content: '';
  position: absolute;
  top: 16px; left: 16px;
  width: 40px; height: 40px;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: 11px;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}
.portfolio-card:nth-child(1) .portfolio-img::after { content: '壱'; font-size: 18px; }
.portfolio-card:nth-child(2) .portfolio-img::after { content: '弐'; font-size: 18px; }
.portfolio-card:nth-child(3) .portfolio-img::after { content: '参'; font-size: 18px; }
.portfolio-card:nth-child(4) .portfolio-img::after { content: '肆'; font-size: 18px; }
.portfolio-card:nth-child(5) .portfolio-img::after { content: '伍'; font-size: 18px; }
.portfolio-card:nth-child(6) .portfolio-img::after { content: '陸'; font-size: 18px; }

.portfolio-cat {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--vermilion);
  margin-bottom: 10px;
  font-weight: 600;
}
.portfolio-card h4 {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  margin-bottom: 8px;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--sumi);
}
.portfolio-meta {
  font-size: 14px;
  color: var(--silver);
  font-weight: 400;
}

/* ===== CTA ===== */
.cta-band {
  padding: 160px 0;
  background: var(--sumi);
  color: var(--paper);
  text-align: center;
  position: relative;
}
.cta-kanji {
  font-family: var(--font-serif);
  font-size: 220px;
  font-weight: 200;
  color: rgba(251,250,247,0.05);
  line-height: 1;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  user-select: none;
  pointer-events: none;
}
.cta-content { position: relative; }
.cta-band .section-label { color: var(--vermilion); }
.cta-band h2 {
  font-family: var(--font-serif);
  font-size: clamp(40px, 5.5vw, 72px);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.025em;
  max-width: 860px;
  margin: 0 auto 56px;
  color: var(--paper);
}
.cta-band h2 .vermilion { color: var(--vermilion); }
.cta-band h2 .kanji { font-weight: 400; }

.cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  padding: 18px 40px;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: background 0.2s ease;
}
.cta-btn:hover { background: var(--vermilion-deep); }

/* ===== Footer ===== */
.site-footer {
  background: var(--paper);
  color: var(--sumi);
  padding: 96px 0 32px;
  border-top: 1px solid var(--line);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 56px;
  margin-bottom: 64px;
}
.footer-brand .logo { margin-bottom: 20px; }
.footer-brand p {
  font-size: 14px;
  color: var(--sumi-3);
  line-height: 1.85;
  margin-top: 16px;
}
.footer-col h5 {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--vermilion);
  margin-bottom: 24px;
}
.footer-col li {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--sumi-3);
  margin-bottom: 12px;
  line-height: 1.7;
}
.footer-col a:hover { color: var(--vermilion); }
/* Footer — 관계사 그룹 라인 */
.footer-group {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding: 28px 0;
  margin-top: 8px;
  border-top: 1px solid var(--line);
}
.footer-group-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 600;
}
.footer-group-list {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-group-list a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  background: var(--paper);
  border: 1px solid var(--line);
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  color: var(--sumi);
  transition: all 0.25s ease;
}
.footer-group-list a:hover {
  border-color: var(--vermilion);
  color: var(--vermilion);
}
.footer-group-list a .seal {
  font-size: 16px;
  color: var(--vermilion);
  font-weight: 600;
}
.footer-group-list a .ext {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--silver);
  margin-left: 6px;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--silver);
  letter-spacing: 0.04em;
}

/* ===== Spanner House 연동 ===== */
.spanner-embed {
  margin-top: 24px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 24px;
}
.spanner-embed-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.spanner-embed-mark {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--vermilion);
  line-height: 1;
}
.spanner-embed-title {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.spanner-embed-title .ko {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--sumi);
  letter-spacing: -0.01em;
  line-height: 1.2;
}
.spanner-embed-title .en {
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--silver);
  text-transform: uppercase;
  line-height: 1;
}

.spanner-video {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--sumi);
  overflow: hidden;
  margin-bottom: 16px;
}
.spanner-video iframe {
  width: 100%;
  height: 100%;
  display: block;
  border: 0;
}

.spanner-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vermilion);
  padding: 8px 0;
  border-bottom: 1px solid var(--vermilion);
  transition: gap 0.25s ease, color 0.25s ease;
}
.spanner-link:hover {
  gap: 16px;
  color: var(--vermilion-deep);
}
.spanner-link .arrow {
  font-family: var(--font-sans);
  font-weight: 300;
}

/* 서비스 ④번 카드의 외부 링크 */
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--vermilion);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--vermilion);
  transition: gap 0.25s ease;
}
.service-link:hover { gap: 14px; }

/* ============================================================
   서브 페이지 공통 컴포넌트 (about / services / contact)
   ============================================================ */

/* Page Hero — 메인 히어로의 축약 버전 */
.page-hero {
  padding: 180px 0 100px;
  position: relative;
  overflow: hidden;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}
.page-hero-kanji {
  position: absolute;
  right: 5%;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-serif);
  font-size: clamp(220px, 30vw, 400px);
  font-weight: 300;
  line-height: 0.9;
  color: var(--paper-3);
  opacity: 0.6;
  z-index: 0;
  user-select: none;
  pointer-events: none;
  letter-spacing: -0.05em;
}
.page-hero-content { position: relative; z-index: 1; max-width: 820px; }
.page-hero-label {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--silver);
  margin-bottom: 32px;
  font-weight: 500;
}
.page-hero-label .line { width: 48px; height: 1px; background: var(--silver); }
.page-hero-label .seal { color: var(--vermilion); font-weight: 600; }
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--sumi);
  margin-bottom: 24px;
}
.page-hero h1 .vermilion { color: var(--vermilion); }
.page-hero h1 .kanji { font-weight: 400; }
.page-hero-lead {
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--sumi-3);
  line-height: 1.85;
  max-width: 620px;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 500;
  margin-bottom: 32px;
}
.breadcrumb a { color: var(--silver); transition: color 0.2s ease; }
.breadcrumb a:hover { color: var(--vermilion); }
.breadcrumb .sep { color: var(--line-deep); }
.breadcrumb .current { color: var(--sumi); }

/* 대표 인사말 박스 */
.greeting {
  background: var(--paper-2);
  padding: 80px 60px;
  border-left: 4px solid var(--vermilion);
  margin: 64px 0;
  position: relative;
}
.greeting::before {
  content: '"';
  position: absolute;
  top: 24px; left: 24px;
  font-family: var(--font-serif);
  font-size: 96px;
  color: var(--vermilion);
  line-height: 0.5;
  opacity: 0.5;
}
.greeting-body {
  font-family: var(--font-serif);
  font-size: 18px;
  line-height: 2;
  color: var(--sumi);
  margin-bottom: 40px;
  white-space: pre-line;
}
.greeting-body em {
  color: var(--vermilion);
  font-style: normal;
  font-weight: 500;
}
.greeting-sign {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
.greeting-sign-label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
}
.greeting-sign-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--sumi);
}

/* Company Profile 표 */
.profile-table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
}
.profile-table tr { border-bottom: 1px solid var(--line); }
.profile-table tr:last-child { border-bottom: none; }
.profile-table th,
.profile-table td {
  padding: 22px 24px;
  text-align: left;
  vertical-align: top;
}
.profile-table th {
  width: 180px;
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
}
.profile-table td {
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--sumi);
  line-height: 1.7;
}

/* Timeline — 연혁 */
.timeline {
  position: relative;
  padding-left: 80px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0; bottom: 0;
  width: 1px;
  background: var(--line);
}
.timeline-item {
  position: relative;
  padding-bottom: 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -65px;
  top: 8px;
  width: 12px; height: 12px;
  background: var(--vermilion);
  border-radius: 50%;
  border: 3px solid var(--paper);
  box-shadow: 0 0 0 1px var(--line);
}
.timeline-year {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--vermilion);
  margin-bottom: 8px;
}
.timeline-item h4 {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 6px;
  letter-spacing: -0.015em;
}
.timeline-item p {
  font-size: 14px;
  color: var(--sumi-3);
  line-height: 1.7;
}

/* Organization Chart — 조직도 */
.org-chart {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  padding: 48px 0;
}
.org-node {
  background: var(--paper);
  border: 1.5px solid var(--sumi);
  padding: 18px 36px;
  text-align: center;
  min-width: 200px;
  position: relative;
}
.org-node.ceo {
  background: var(--sumi);
  color: var(--paper);
  border-color: var(--sumi);
}
.org-node.ceo .org-role {
  color: var(--vermilion);
}
.org-role {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
  margin-bottom: 6px;
}
.org-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.05em;
}
.org-divisions {
  display: flex;
  gap: 24px;
  position: relative;
}
.org-divisions::before {
  content: '';
  position: absolute;
  top: -16px;
  left: 50%;
  width: 1px;
  height: 16px;
  background: var(--line-deep);
}
.org-divisions::after {
  content: '';
  position: absolute;
  top: -16px;
  left: 16.66%;
  right: 16.66%;
  height: 1px;
  background: var(--line-deep);
}
.org-divisions .org-node::before {
  content: '';
  position: absolute;
  top: -16px;
  left: 50%;
  width: 1px;
  height: 16px;
  background: var(--line-deep);
}

/* Engineer Cards — 기술자 7명 */
.engineers {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.engineer-card {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 28px 24px;
  transition: all 0.25s ease;
}
.engineer-card:hover {
  border-color: var(--vermilion);
  transform: translateY(-3px);
}
.engineer-grade {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 700;
  margin-bottom: 16px;
}
.engineer-card.special .engineer-grade {
  background: var(--vermilion);
  color: var(--paper);
  border-color: var(--vermilion);
}
.engineer-name {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}
.engineer-cert {
  font-size: 13px;
  color: var(--sumi-3);
  line-height: 1.5;
}
.engineer-id {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--silver);
  letter-spacing: 0.04em;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}

/* Credit Card — 회사등급 */
.credit-banner {
  background: var(--sumi);
  color: var(--paper);
  padding: 64px 56px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 48px;
  align-items: center;
}
.credit-info .label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
  margin-bottom: 16px;
}
.credit-info h3 {
  font-family: var(--font-serif);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 500;
  color: var(--paper);
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 16px;
}
.credit-info p {
  font-family: var(--font-serif);
  font-size: 15px;
  color: rgba(251,250,247,0.7);
  line-height: 1.7;
}
.credit-grades {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.credit-grade-box {
  background: rgba(251,250,247,0.05);
  border: 1px solid rgba(251,250,247,0.15);
  padding: 28px 24px;
  text-align: center;
}
.credit-grade-box .label {
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(251,250,247,0.6);
  font-weight: 600;
  margin-bottom: 12px;
}
.credit-grade-box .grade {
  font-family: var(--font-sans);
  font-size: 48px;
  font-weight: 700;
  color: var(--vermilion);
  letter-spacing: -0.02em;
  line-height: 1;
}
.credit-grade-box .source {
  font-size: 11px;
  color: rgba(251,250,247,0.4);
  margin-top: 12px;
  letter-spacing: 0.04em;
}

/* Certification Grid — 제증명서 */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.cert-item {
  background: var(--paper);
  border: 1px solid var(--line);
  padding: 28px 24px;
  text-align: center;
  transition: all 0.25s ease;
}
.cert-item:hover {
  border-color: var(--vermilion);
  background: var(--paper-2);
}
.cert-item .seal {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--vermilion);
  line-height: 1;
  margin-bottom: 14px;
}
.cert-item h5 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 4px;
  letter-spacing: -0.015em;
}
.cert-item .id {
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--silver);
  letter-spacing: 0.04em;
  margin-top: 8px;
}

/* Service Detail Layout */
.service-detail {
  padding: 100px 0;
  border-bottom: 1px solid var(--line);
}
.service-detail:nth-child(even) { background: var(--paper-2); }
.service-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 80px;
  align-items: center;
}
.service-detail-img {
  aspect-ratio: 4/5;
  background: var(--paper-2);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border: 1px solid var(--line);
  position: relative;
}
.service-detail-img::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(45deg, transparent 0 30px, rgba(214,208,194,0.3) 30px 31px);
}
.service-detail-img.has-image::before { display: none; }
.service-detail-no {
  font-family: var(--font-serif);
  font-size: 96px;
  font-weight: 400;
  color: var(--vermilion);
  line-height: 1;
  margin-bottom: 20px;
  letter-spacing: -0.04em;
}
.service-detail h2 {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 500;
  color: var(--sumi);
  letter-spacing: -0.025em;
  line-height: 1.25;
  margin-bottom: 24px;
}
.service-detail h2 .en {
  display: block;
  font-family: var(--font-sans);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
  margin-bottom: 12px;
}
.service-detail .lead {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--sumi-3);
  line-height: 1.85;
  margin-bottom: 32px;
}
.service-detail h3 {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 14px;
  letter-spacing: -0.015em;
  margin-top: 28px;
}
.service-detail ul {
  list-style: none;
  margin-top: 12px;
}
.service-detail ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--sumi-3);
  line-height: 1.7;
}
.service-detail ul li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--vermilion);
  font-size: 24px;
  line-height: 1;
}

/* Process Steps — 시공 프로세스 */
.process {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  margin-top: 40px;
}
.process-step {
  text-align: center;
  padding: 24px 16px;
  position: relative;
}
.process-step:not(:last-child)::after {
  content: '→';
  position: absolute;
  right: -8px;
  top: 48px;
  font-family: var(--font-sans);
  font-size: 18px;
  color: var(--vermilion);
  font-weight: 300;
}
.process-no {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 400;
  color: var(--vermilion);
  line-height: 1;
  margin-bottom: 12px;
}
.process-step h4 {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 6px;
  letter-spacing: -0.01em;
}
.process-step p {
  font-size: 13px;
  color: var(--sumi-3);
  line-height: 1.6;
}

/* Contact Page */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 64px;
  align-items: start;
}
.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-info-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--line);
}
.contact-info-item:last-child { border-bottom: none; }
.contact-info-item .label {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--vermilion);
  font-weight: 600;
  margin-bottom: 8px;
}
.contact-info-item .value {
  font-family: var(--font-serif);
  font-size: 17px;
  color: var(--sumi);
  font-weight: 500;
  line-height: 1.6;
}
.contact-info-item .sub {
  font-size: 13px;
  color: var(--sumi-3);
  margin-top: 4px;
}

/* Form */
.contact-form {
  background: var(--paper-2);
  padding: 56px 48px;
  border-left: 4px solid var(--vermilion);
}
.contact-form h3 {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 500;
  color: var(--sumi);
  margin-bottom: 28px;
  letter-spacing: -0.02em;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.form-group {
  margin-bottom: 20px;
}
.form-group label {
  display: block;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--vermilion);
  margin-bottom: 8px;
}
.form-group label .req { color: var(--vermilion); margin-left: 4px; }
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--paper);
  border: 1px solid var(--line);
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--sumi);
  transition: border-color 0.2s ease, background 0.2s ease;
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--vermilion);
  background: #fff;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--silver); }
.form-group textarea { resize: vertical; min-height: 140px; }
.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  font-size: 13px;
  color: var(--sumi-3);
}
.form-check input { width: 16px; height: 16px; accent-color: var(--vermilion); }
.form-submit {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 16px 32px;
  background: var(--vermilion);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border: none;
  cursor: pointer;
  transition: background 0.2s ease;
  width: 100%;
  justify-content: center;
}
.form-submit:hover { background: var(--vermilion-deep); }

/* Responsive */
@media (max-width: 1024px) {
  .engineers { grid-template-columns: repeat(2, 1fr); }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .credit-banner { grid-template-columns: 1fr; padding: 48px 32px; }
  .service-detail-grid { grid-template-columns: 1fr; gap: 40px; }
  .process { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .process-step:not(:last-child)::after { display: none; }
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
}
@media (max-width: 768px) {
  .engineers { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: 1fr; }
  .greeting { padding: 48px 28px; }
  .contact-form { padding: 36px 24px; }
  .form-row { grid-template-columns: 1fr; }
  .page-hero { padding: 130px 0 72px; }
  .timeline { padding-left: 56px; }
  .timeline-item::before { left: -50px; }
  .profile-table th { width: auto; display: block; padding-bottom: 4px; }
  .profile-table td { display: block; padding-top: 4px; padding-bottom: 22px; }
}

/* ===== Image Slots — Grok 이미지 삽입 ===== */
.img-slot {
  position: relative;
  width: 100%;
  background-color: var(--paper-2);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid var(--line);
}
.img-slot::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(45deg, transparent 0 30px, rgba(214,208,194,0.4) 30px 31px);
  z-index: 0;
}
.img-slot .img-label {
  position: relative;
  z-index: 1;
  font-family: var(--font-sans);
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--silver);
  font-weight: 600;
  background: var(--paper);
  padding: 8px 16px;
  border: 1px solid var(--line);
  text-align: center;
}
/* 배경 이미지가 있으면 패턴/라벨 숨김 */
.img-slot.has-image::before,
.img-slot.has-image .img-label { display: none; }

.img-slot.hero-image { aspect-ratio: 16/10; margin-top: 56px; }
.img-slot.service-image { aspect-ratio: 4/3; margin-bottom: 28px; }
.img-slot.vision-image { aspect-ratio: 16/10; margin-top: 24px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services { grid-template-columns: 1fr; }
  .service-item { border-right: none; border-bottom: 1px solid var(--line); }
  .portfolio-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .hero-kanji { font-size: 60vw; opacity: 0.3; }
}
@media (max-width: 768px) {
  .container { padding: 0 24px; }
  section { padding: 80px 0; }
  .hero { padding: 130px 0 80px; }
  .brush-section { padding: 80px 0; }
  .cta-band { padding: 80px 0; }
  .nav-menu {
    position: fixed;
    top: 80px; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    gap: 0;
    padding: 12px 24px;
    transform: translateY(-110%);
    transition: transform 0.3s ease;
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav-cta { display: none; }
  .nav-toggle { display: flex; flex-direction: column; gap: 4px; padding: 8px; }
  .nav-toggle span { width: 22px; height: 1.5px; background: var(--sumi); }
  .pillar-row { grid-template-columns: 1fr; gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
}