/* ===== 서브 페이지 공통 ===== */

.sub-section {
  padding: clamp(60px, 8vw, 100px) var(--gutter);
}
.sub-section.bg-soft { background: var(--concrete-soft); }
.sub-section.bg-concrete { background: var(--concrete-light); }
.sub-section.bg-dark { background: var(--concrete-dark); color: var(--concrete-light); }

.sub-section .inner {
  max-width: var(--max-w);
  margin: 0 auto;
}

.sub-heading {
  margin-bottom: 48px;
}
.sub-heading .kicker {
  font-family: var(--font-sub); font-weight: 700;
  font-size: 13px; letter-spacing: .2em;
  color: var(--accent);
  margin-bottom: 12px; display: inline-block;
}
.sub-heading h2 {
  font-family: var(--font-title);
  font-size: clamp(26px, 3.4vw, 38px);
  letter-spacing: -.02em;
  line-height: 1.25;
}
.sub-heading .lead {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 16px; color: var(--concrete-mid);
  margin-top: 16px;
  max-width: 720px;
}

/* About — greeting */
.greeting-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}
.greeting-grid .portrait {
  aspect-ratio: 3/4;
  background-size: cover; background-position: center;
  background-color: var(--concrete-mid);
}
.greeting-grid .text p {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 16px; line-height: 1.9;
  color: var(--concrete-dark);
  margin-bottom: 20px;
}
.greeting-grid .text p.highlight {
  font-family: var(--font-title);
  font-size: 22px; line-height: 1.5;
  color: var(--concrete-dark);
  margin: 32px 0;
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}
.greeting-grid .signature {
  font-family: var(--font-point);
  font-size: 18px;
  color: var(--concrete-dark);
  margin-top: 32px;
}
.greeting-grid .signature span {
  color: var(--accent);
  font-size: 22px;
  margin-left: 8px;
}
@media (max-width: 860px) {
  .greeting-grid { grid-template-columns: 1fr; gap: 40px; }
}

/* History timeline */
.history-timeline {
  position: relative;
  padding-left: 40px;
  border-left: 2px solid var(--concrete-light);
}
.history-item {
  position: relative;
  padding: 0 0 40px 0;
}
.history-item::before {
  content: '';
  position: absolute;
  left: -48px; top: 8px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--concrete-soft);
}
.history-item .yr {
  font-family: var(--font-title);
  font-size: 28px;
  color: var(--accent);
  letter-spacing: -.01em;
  margin-bottom: 8px;
}
.history-item .event {
  font-family: var(--font-body);
  font-size: 15px; line-height: 1.7;
  color: var(--concrete-dark);
}
.history-item .event strong {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--concrete-dark);
}

/* Vision grid */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.vision-card {
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid var(--concrete-light);
  border-top: 3px solid var(--accent);
  transition: transform .3s, box-shadow .3s;
}
.vision-card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(0,0,0,.06); }
.vision-card .num {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 12px; letter-spacing: .2em;
  color: var(--accent); margin-bottom: 16px;
}
.vision-card h3 {
  font-family: var(--font-title);
  font-size: 22px;
  margin-bottom: 12px;
  letter-spacing: -.01em;
}
.vision-card p {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 14px; line-height: 1.7;
  color: var(--concrete-mid);
}
@media (max-width: 860px) { .vision-grid { grid-template-columns: 1fr; } }

/* Business sections (공법 상세) */
.method-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 80px;
}
.method-split.reverse { direction: rtl; }
.method-split.reverse > * { direction: ltr; }
.method-split .figure {
  aspect-ratio: 4/3;
  background-size: cover; background-position: center;
  background-color: var(--concrete-mid);
}
/* 세로형 원본 이미지는 contain으로 전환해 찌그러짐 방지 */
.method-split .figure.portrait {
  background-size: contain;
  background-repeat: no-repeat;
  background-color: var(--concrete-soft);
}
.method-split .body .tag {
  display: inline-block;
  font-family: var(--font-sub); font-weight: 700;
  font-size: 12px; letter-spacing: .15em;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 12px;
  margin-bottom: 16px;
}
.method-split .body h3 {
  font-family: var(--font-title);
  font-size: clamp(24px, 3vw, 34px);
  margin-bottom: 20px;
  letter-spacing: -.02em;
  line-height: 1.3;
}
.method-split .body p {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 15px; line-height: 1.8;
  color: var(--concrete-dark);
  margin-bottom: 20px;
}
.method-split .body ul.bullets { margin-top: 20px; }
.method-split .body ul.bullets li {
  padding: 10px 0 10px 28px;
  position: relative;
  font-family: var(--font-sub); font-weight: 300;
  font-size: 14px; line-height: 1.6;
  color: var(--concrete-dark);
  border-bottom: 1px solid var(--concrete-light);
}
.method-split .body ul.bullets li:last-child { border-bottom: none; }
.method-split .body ul.bullets li::before {
  content: '▸';
  position: absolute;
  left: 0; top: 10px;
  color: var(--accent);
  font-weight: bold;
}

@media (max-width: 860px) {
  .method-split, .method-split.reverse { grid-template-columns: 1fr; gap: 32px; direction: ltr; }
}

/* Process steps (시공순서) */
.process-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
}
.process-step {
  position: relative;
  padding: 24px 16px;
  background: var(--white);
  border: 1px solid var(--concrete-light);
  text-align: center;
}
.process-step .step-no {
  display: block;
  font-family: var(--font-title);
  font-size: 14px; letter-spacing: .1em;
  color: var(--accent);
  margin-bottom: 12px;
}
.process-step .step-img {
  aspect-ratio: 1/1;
  background-size: cover; background-position: center;
  background-color: var(--concrete-light);
  margin-bottom: 14px;
}
.process-step h4 {
  font-family: var(--font-title);
  font-size: 15px;
  margin-bottom: 6px;
}
.process-step p {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 12px; line-height: 1.5;
  color: var(--concrete-mid);
}
@media (max-width: 900px) { .process-steps { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 520px) { .process-steps { grid-template-columns: repeat(2, 1fr); } }

/* Comparison table */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  overflow: hidden;
  font-family: var(--font-body);
}
.compare-table th,
.compare-table td {
  padding: 16px 20px;
  text-align: left;
  border-bottom: 1px solid var(--concrete-light);
  font-size: 14px;
  vertical-align: top;
}
.compare-table thead th {
  background: var(--concrete-dark);
  color: var(--white);
  font-family: var(--font-title);
  font-size: 15px;
  text-align: center;
  letter-spacing: -.01em;
}
.compare-table thead th.highlight {
  background: var(--accent-deep);
}
.compare-table td:first-child,
.compare-table th:first-child {
  background: var(--concrete-soft);
  font-family: var(--font-sub); font-weight: 700;
  width: 130px;
  text-align: center;
  color: var(--concrete-dark);
}
.compare-table .prcd-col {
  background: var(--accent-soft);
  font-weight: 500;
}
.compare-table tbody tr:last-child td { border-bottom: none; }
.compare-table .pill {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 99px;
  font-size: 11px;
  font-family: var(--font-sub); font-weight: 700;
  background: var(--concrete-light);
  color: var(--concrete-dark);
}
.compare-table .pill.good { background: var(--accent); color: var(--white); }
.compare-table .pill.bad { background: #c0654a; color: var(--white); }
@media (max-width: 780px) {
  .compare-table th, .compare-table td { padding: 10px 8px; font-size: 12px; }
  .compare-table td:first-child, .compare-table th:first-child { width: 80px; }
}

/* Text-style project cards (실사 없는 카드) */
.project-card.text-only {
  background: var(--white);
  border: 1px solid var(--concrete-light);
  border-top: 3px solid var(--concrete-mid);
  padding: 28px 24px;
  display: flex; flex-direction: column; justify-content: space-between;
  min-height: 220px;
  transition: all .3s;
}
.project-card.text-only:hover {
  border-top-color: var(--accent);
  box-shadow: 0 20px 40px rgba(0,0,0,.06);
  transform: translateY(-2px);
}
.project-card.text-only .cat-row {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 16px;
}
.project-card.text-only .cat-icon {
  width: 40px; height: 40px;
  background: var(--accent-soft);
  color: var(--accent-deep);
  display: flex; align-items: center; justify-content: center;
  font-size: 20px;
  border-radius: 2px;
  font-family: var(--font-title);
}
.project-card.text-only .cat-label {
  font-family: var(--font-sub); font-weight: 700;
  font-size: 11px; letter-spacing: .2em;
  color: var(--accent-deep);
}
.project-card.text-only h4 {
  font-family: var(--font-title);
  font-size: 17px;
  line-height: 1.4;
  color: var(--concrete-dark);
  margin-bottom: 12px;
  letter-spacing: -.01em;
}
.project-card.text-only .client {
  font-family: var(--font-sub); font-weight: 700;
  font-size: 14px;
  color: var(--concrete-dark);
  margin-bottom: 4px;
}
.project-card.text-only .period {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 12px;
  color: var(--concrete-mid);
  letter-spacing: .02em;
}
.project-card.text-only .spec {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--concrete-light);
  font-family: var(--font-sub); font-weight: 300;
  font-size: 12px;
  color: var(--concrete-mid);
}
.project-card.text-only .spec strong {
  color: var(--accent-deep);
  font-family: var(--font-title);
  font-weight: 700;
}
.project-card.highlight {
  border-top: 3px solid var(--accent);
  background: linear-gradient(180deg, var(--accent-soft) 0%, var(--white) 30%);
}

/* Projects list */
.project-filters {
  display: flex; flex-wrap: wrap; gap: 10px; justify-content: center;
  margin-bottom: 40px;
}
.project-filters button {
  padding: 10px 20px;
  font-family: var(--font-sub); font-weight: 700;
  font-size: 13px; letter-spacing: .1em;
  border: 1px solid var(--concrete-mid);
  color: var(--concrete-dark);
  background: transparent;
  border-radius: 2px;
  transition: all .2s;
}
.project-filters button:hover,
.project-filters button.active {
  background: var(--concrete-dark);
  color: var(--white);
  border-color: var(--concrete-dark);
}

.projects-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 900px) { .projects-list { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .projects-list { grid-template-columns: 1fr; } }

/* Equipment table */
.equip-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  font-family: var(--font-body);
}
.equip-table th, .equip-table td {
  padding: 14px 16px;
  text-align: left;
  border-bottom: 1px solid var(--concrete-light);
  font-size: 14px;
}
.equip-table thead th {
  background: var(--concrete-light);
  font-family: var(--font-title);
  font-size: 13px;
  letter-spacing: .05em;
}
.equip-table td:first-child {
  font-family: var(--font-sub); font-weight: 700;
  color: var(--concrete-dark);
  width: 180px;
}

/* Equipment groups (카드식 대체) */
.equip-groups { display: flex; flex-direction: column; gap: 56px; }
.equip-group { }
.equip-group-head {
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--accent);
  display: flex; align-items: baseline; gap: 16px; flex-wrap: wrap;
}
.equip-group-head .num {
  font-family: var(--font-title);
  font-size: 20px;
  color: var(--accent);
  letter-spacing: .1em;
}
.equip-group-head h3 {
  font-family: var(--font-title);
  font-size: 22px;
  color: var(--concrete-dark);
  letter-spacing: -.01em;
  margin-right: auto;
}
.equip-group-head p {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 13px;
  color: var(--concrete-mid);
  flex-basis: 100%;
  margin-top: 6px;
  line-height: 1.6;
}
.equip-items {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.equip-item {
  background: var(--white);
  border: 1px solid var(--concrete-light);
  border-left: 3px solid var(--concrete-mid);
  padding: 22px 24px;
  transition: border-left-color .2s, box-shadow .2s;
}
.equip-item:hover {
  border-left-color: var(--accent);
  box-shadow: 0 10px 24px rgba(0,0,0,.05);
}
.equip-item h4 {
  font-family: var(--font-title);
  font-size: 16px;
  color: var(--concrete-dark);
  letter-spacing: -.01em;
  margin-bottom: 10px;
  display: flex; align-items: baseline; flex-wrap: wrap; gap: 10px;
}
.equip-item h4 .spec {
  font-family: var(--font-sub); font-weight: 700;
  font-size: 11px;
  color: var(--accent-deep);
  letter-spacing: .05em;
  background: var(--accent-soft);
  padding: 2px 8px;
  border-radius: 2px;
}
.equip-item p {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 13px; line-height: 1.7;
  color: var(--concrete-dark);
}
.equip-item p strong {
  font-family: var(--font-title);
  font-weight: 700;
  color: var(--accent-deep);
}
@media (max-width: 780px) {
  .equip-items { grid-template-columns: 1fr; }
}

/* Patent grid */
.patent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.patent-card {
  background: var(--white);
  border: 1px solid var(--concrete-light);
  padding: 24px;
  text-align: center;
  transition: transform .3s;
}
.patent-card:hover { transform: translateY(-4px); }
.patent-card .thumb {
  aspect-ratio: 3/4;
  background-size: cover; background-position: center;
  background-color: var(--concrete-soft);
  margin-bottom: 16px;
  position: relative;
  overflow: hidden;
}
/* 테스트용 이미지 워터마크 */
.test-overlay::before {
  content: '';
  position: absolute; inset: 0;
  background: repeating-linear-gradient(
    -35deg,
    rgba(220, 38, 38, 0.12) 0 60px,
    rgba(220, 38, 38, 0.04) 60px 120px
  );
  pointer-events: none;
}
.test-overlay::after {
  content: '⚠ 테스트용 이미지입니다';
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%) rotate(-18deg);
  font-family: var(--font-title);
  font-size: 15px;
  letter-spacing: .05em;
  color: rgba(220, 38, 38, 0.92);
  background: rgba(255, 255, 255, 0.88);
  padding: 8px 16px;
  border: 2px solid rgba(220, 38, 38, 0.85);
  border-radius: 2px;
  white-space: nowrap;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,.12);
}
.patent-card h4 {
  font-family: var(--font-title);
  font-size: 15px;
  margin-bottom: 6px;
}
.patent-card .meta {
  font-family: var(--font-sub); font-weight: 300;
  font-size: 12px; color: var(--concrete-mid);
}
@media (max-width: 780px) { .patent-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 500px) { .patent-grid { grid-template-columns: 1fr; } }

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
}
.contact-info h3 {
  font-family: var(--font-title);
  font-size: 22px;
  margin-bottom: 24px;
}
.contact-info ul li {
  padding: 16px 0;
  border-bottom: 1px solid var(--concrete-light);
  font-family: var(--font-sub); font-weight: 300;
  font-size: 15px;
}
.contact-info ul li strong {
  display: inline-block;
  width: 80px;
  font-family: var(--font-sub); font-weight: 700;
  color: var(--accent);
  font-size: 12px; letter-spacing: .15em;
}
.contact-info ul li a { color: var(--concrete-dark); border-bottom: 1px dashed var(--concrete-mid); }

.contact-form {
  background: var(--concrete-soft);
  padding: 40px;
  border: 1px solid var(--concrete-light);
}
.contact-form h3 {
  font-family: var(--font-title);
  font-size: 22px;
  margin-bottom: 24px;
}
.contact-form label {
  display: block;
  font-family: var(--font-sub); font-weight: 700;
  font-size: 12px; letter-spacing: .1em;
  color: var(--concrete-dark);
  margin-bottom: 6px;
}
.contact-form input, .contact-form textarea, .contact-form select {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 14px;
  border: 1px solid var(--concrete-light);
  background: var(--white);
  border-radius: 2px;
  margin-bottom: 16px;
}
.contact-form textarea { min-height: 140px; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus, .contact-form select:focus {
  outline: none;
  border-color: var(--accent);
}
.contact-form button {
  padding: 14px 32px;
  font-family: var(--font-sub); font-weight: 700;
  font-size: 14px; letter-spacing: .1em;
  background: var(--accent);
  color: var(--white);
  border: none;
  border-radius: 2px;
  cursor: pointer;
  transition: background .2s;
}
.contact-form button:hover { background: var(--accent-deep); }
@media (max-width: 860px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }

/* Notice-strip */
.notice-strip {
  background: var(--concrete-dark);
  color: var(--concrete-light);
  text-align: center;
  padding: 40px var(--gutter);
  font-family: var(--font-sub); font-weight: 300;
  font-size: 15px;
  letter-spacing: .02em;
}
.notice-strip strong {
  font-family: var(--font-title);
  color: var(--accent-soft);
  margin-right: 10px;
}