/* 시안 C: 절제된 기술형 스타일 (C/style.css) */
@import url('assets/base.css');

/* 헤더 - 잉크색 헤더 */
.site-header-dark {
  background-color: var(--color-ink);
  border-bottom: 1px solid var(--color-line-dark);
  padding: 1.25rem 0;
}

.site-header-light {
  background-color: var(--color-paper);
  border-bottom: 1px solid var(--color-line);
  padding: 1.25rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 1.75rem;
}

.nav-link-dark {
  color: var(--color-paper);
  font-size: 0.9375rem;
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-link-dark:hover {
  color: #72B9AB;
}

.nav-link-light {
  color: var(--color-ink);
  font-size: 0.9375rem;
  font-weight: 500;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-link-light:hover {
  color: var(--color-teal);
}

/* 홈 잉크색 히어로 */
.hero-tech-dark {
  background-color: var(--color-ink);
  color: var(--color-paper);
  padding: 6rem 0 5.5rem;
  border-bottom: 3px solid var(--color-teal);
}

.hero-tech-content {
  max-width: 68ch;
}

.hero-tech-tag {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #72B9AB;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.hero-tech-dark h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.25rem);
  font-weight: 700;
  line-height: 1.32;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--color-paper);
}

.hero-tech-dark p {
  font-size: 1.15rem;
  line-height: 1.75;
  color: #CFD2D0;
  margin-bottom: 2.5rem;
}

.hero-tech-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn-tech-primary {
  background-color: var(--color-teal);
  color: var(--color-paper);
  border: 1px solid var(--color-teal);
}
.btn-tech-primary:hover {
  background-color: #246558;
}

.btn-tech-secondary-dark {
  background-color: transparent;
  color: var(--color-paper);
  border: 1px solid var(--color-line-dark);
}
.btn-tech-secondary-dark:hover {
  border-color: #72B9AB;
  color: #72B9AB;
}

/* 서비스 섹션 (종이색 배경) */
.services-tech {
  background-color: var(--color-paper);
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--color-line);
}

.services-tech-head {
  margin-bottom: 3.5rem;
}

.services-tech-title {
  font-size: 1.875rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.services-tech-intro {
  font-size: 1.0625rem;
  color: #383D3B;
  margin-bottom: 0.5rem;
}

.services-tech-note {
  font-size: 0.875rem;
  color: var(--color-gray);
}

.services-tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.service-tech-card {
  border: 0;
  border-top: 2px solid var(--color-ink);
  padding: 1.75rem 0;
  background-color: transparent;
}

.service-tech-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 0.75rem;
}

.service-tech-card-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.service-tech-code {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-teal);
  letter-spacing: 0.05em;
}

.service-tech-desc {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #2F3335;
  margin-bottom: 1.25rem;
}

.service-tech-spec {
  font-size: 0.875rem;
  line-height: 1.6;
  color: #4D5250;
  background-color: #F8F7F3;
  padding: 1rem;
  border-left: 2px solid var(--color-teal);
  margin-bottom: 1rem;
}

.service-tech-spec p + p {
  margin-top: 0.35rem;
}

.service-tech-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-teal);
}

.services-tech-scope-note {
  margin-top: 3rem;
  padding: 1.25rem 1.5rem;
  background: #EAE8E2;
  font-size: 0.875rem;
  color: #383D3B;
  border: 1px solid var(--color-line);
}

/* 기술형 작은 흐름도 (Workflow diagram) */
.process-tech {
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--color-line);
  background-color: var(--color-paper);
}

.workflow-container {
  margin-top: 3rem;
}

.workflow-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.workflow-step {
  border: 0;
  border-top: 1px solid var(--color-ink);
  background: transparent;
  padding: 1.75rem 1.25rem;
  position: relative;
}

.workflow-step::after {
  content: '→';
  position: absolute;
  right: -1.2rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.25rem;
  color: var(--color-teal);
  font-weight: 700;
}

.workflow-step:last-child::after {
  content: '';
}

.workflow-step-num {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-teal);
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.workflow-step h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.workflow-step p {
  font-size: 0.875rem;
  line-height: 1.65;
  color: #383D3B;
}

.workflow-ai-policy {
  margin-top: 2.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--color-line);
  background: #FCFBF9;
  font-size: 0.875rem;
  line-height: 1.65;
  color: #4D5250;
}

.process-solo-badge {
  margin-top: 1rem;
  font-size: 0.875rem;
  color: var(--color-gray);
  font-weight: 500;
}

/* 대표 요약 블록 */
.founder-tech-summary {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--color-line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 3rem;
}

.founder-tech-left h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.35rem;
}

.founder-tech-left p {
  font-size: 0.9375rem;
  color: var(--color-teal);
  font-weight: 600;
}

.founder-tech-right {
  max-width: 60ch;
}

.founder-tech-right p {
  font-size: 1.0625rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
}

/* 잉크색 문의 섹션 */
.contact-tech-dark {
  background-color: var(--color-ink);
  color: var(--color-paper);
  padding: 5.5rem 0;
}

.contact-tech-content {
  max-width: 68ch;
}

.contact-tech-dark h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--color-paper);
}

.contact-tech-dark p {
  font-size: 1.0625rem;
  line-height: 1.7;
  color: #CFD2D0;
  margin-bottom: 1.5rem;
}

.contact-tech-checklist {
  background: rgba(245, 243, 238, 0.05);
  border: 1px solid var(--color-line-dark);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
}

.contact-tech-checklist-title {
  font-weight: 700;
  color: var(--color-paper);
  margin-bottom: 0.5rem;
}

.contact-tech-checklist ul {
  list-style: square inside;
  font-size: 0.875rem;
  line-height: 1.65;
  color: #B5B9B7;
}

.contact-tech-email-row {
  margin-bottom: 1.5rem;
}

.contact-tech-email-label {
  font-size: 0.8125rem;
  color: #8C918E;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.contact-tech-email-addr {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-paper);
}

.contact-tech-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.contact-tech-disclaimer {
  margin-top: 1.5rem;
  font-size: 0.8125rem;
  color: #8C918E;
}

/* 푸터 */
.site-footer-dark {
  background-color: #0E1112;
  color: #8C918E;
  padding: 2rem 0;
  font-size: 0.875rem;
  border-top: 1px solid rgba(245, 243, 238, 0.1);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* About C 전용 스타일: 밝은 바탕 연대기와 수행 범위 구분 */
.about-tech-page {
  padding: 5rem 0 3.5rem;
  max-width: 72ch;
  margin: 0 auto;
}

.about-tech-header {
  border-bottom: 2px solid var(--color-ink);
  padding-bottom: 2rem;
  margin-bottom: 3.5rem;
}

.about-tech-header h1 {
  font-size: clamp(2rem, 3.8vw, 2.75rem);
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.25rem;
}

.about-tech-intro {
  font-size: 1.125rem;
  line-height: 1.8;
  color: #2F3335;
  margin-bottom: 1.25rem;
}

.about-tech-distinction {
  padding: 0.75rem 1rem;
  background: rgba(47, 125, 110, 0.08);
  border-left: 3px solid var(--color-teal);
  font-size: 0.875rem;
  color: #23544B;
}

.about-tech-block {
  margin-bottom: 4rem;
}

.about-tech-block-title {
  font-size: 1.375rem;
  font-weight: 700;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-ink);
  margin-bottom: 2rem;
}

.tech-chronology {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.tech-chrono-row {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 2rem;
  align-items: baseline;
  border-bottom: 1px solid var(--color-line);
  padding-bottom: 1.75rem;
}

.tech-chrono-time {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-teal);
}

.tech-chrono-content h3 {
  font-size: 1.1875rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.tech-chrono-desc {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: #383D3B;
}

.tech-chrono-tag {
  display: inline-block;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background-color: rgba(21, 25, 27, 0.06);
  color: #4D5250;
}

.tech-table {
  width: 100%;
  border-collapse: collapse;
}

.tech-table tr {
  border-bottom: 1px solid var(--color-line);
}

.tech-table th,
.tech-table td {
  padding: 0.875rem 0.5rem;
  font-size: 0.9375rem;
}

.tech-table th {
  text-align: left;
  font-weight: 600;
}

.tech-table td {
  text-align: right;
  color: var(--color-gray);
  white-space: nowrap;
}

.about-tech-disclaimer {
  margin-top: 2rem;
  padding: 1rem 1.25rem;
  background: #FCFBF9;
  border: 1px solid var(--color-line);
  font-size: 0.8125rem;
  color: var(--color-gray);
  line-height: 1.6;
}

/* 반응형 */
@media (max-width: 900px) {
  .services-tech-grid {
    grid-template-columns: 1fr;
  }
  .workflow-steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .workflow-step::after {
    display: none;
  }
  .founder-tech-summary {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.5rem;
  }
  .tech-chrono-row {
    grid-template-columns: 1fr;
    gap: 0.5rem;
  }
}

@media (max-width: 640px) {
  .workflow-steps {
    grid-template-columns: 1fr;
  }
  .nav-list {
    gap: 0.875rem;
    flex-wrap: wrap;
  }
  .header-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}