/* 바닥코팅방수 — 물결/리플 모티프, 딥 블루 x 틸 블루 팔레트, 원형 스캘럽 디바이더 */

:root {
  --primary: #023047;
  --accent: #219EBC;
  --accent-light: #8ECAE6;
  --ink: #0b2534;
  --sub: #3f5c6b;
  --line: #cfe6ee;
  --paper: #eef7fa;
  --radius: 18px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans KR", -apple-system, "Malgun Gothic", sans-serif;
  color: var(--ink);
  background: #fff;
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2 {
  font-family: "Yeon Sung", cursive;
  font-weight: 400;
  color: var(--primary);
  letter-spacing: 0.01em;
}

a { color: inherit; }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.section-inner, .split-inner { max-width: 1100px; margin: 0 auto; }

/* ---------- 헤더 ---------- */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.logo {
  color: var(--primary);
  font-family: "Yeon Sung", cursive;
  font-weight: 400;
  font-size: 1.3rem;
  text-decoration: none;
}
.menu-toggle {
  width: 44px; height: 44px;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 5px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 10px;
  cursor: pointer;
}
.menu-toggle span { width: 20px; height: 2px; background: var(--primary); border-radius: 2px; }

#primary-nav {
  display: none;
  flex-direction: column;
  width: 100%;
}
#primary-nav.is-open { display: flex; }
#primary-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 12px 8px;
  min-height: 44px;
  display: flex;
  align-items: center;
  border-top: 1px solid var(--line);
  font-size: 0.96rem;
}
#primary-nav a:hover { color: var(--accent); }

@media (min-width: 768px) {
  .menu-toggle { display: none; }
  #primary-nav {
    display: flex;
    flex-direction: row;
    width: auto;
    gap: 6px;
  }
  #primary-nav a { border-top: none; padding: 10px 14px; }
}

/* ---------- 버튼: 필 형태 + 소프트 블루 글로우 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 30px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.98rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--primary));
  color: #fff;
  box-shadow: 0 8px 22px -6px rgba(33, 158, 188, 0.65), 0 0 0 4px rgba(142, 202, 230, 0.25);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 26px -6px rgba(33, 158, 188, 0.8), 0 0 0 5px rgba(142, 202, 230, 0.3); }
.btn-ghost {
  background: #fff;
  color: var(--primary);
  border: 1.5px solid var(--accent-light);
}
.btn-ghost:hover { background: var(--paper); border-color: var(--accent); }

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- 히어로 ---------- */
.hero {
  max-width: 780px;
  margin: 0 auto;
  padding: 60px 20px 56px;
  text-align: center;
  position: relative;
}
.eyebrow {
  margin: 0 0 14px;
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--accent);
  font-weight: 700;
}
.hero h1 {
  font-size: clamp(2.3rem, 7vw, 3.2rem);
  margin: 0 0 20px;
  line-height: 1.25;
}
.hero-sub {
  max-width: 42em;
  margin: 0 auto 28px;
  color: var(--sub);
  font-size: 1.02rem;
}
.hero .hero-cta { justify-content: center; }

/* ---------- 물결 디바이더: 원형 스캘럽 반복으로 리플 표현 ---------- */
.wave {
  height: 40px;
  width: 100%;
}
.wave-1 {
  background: radial-gradient(circle at 50% -6px, transparent 22px, var(--paper) 23px) 0 0/48px 48px repeat-x;
}
.wave-2 {
  background: radial-gradient(circle at 50% 46px, transparent 22px, var(--paper) 23px) 0 0/48px 48px repeat-x;
  transform: rotate(180deg);
}

/* ---------- 개념 섹션 ---------- */
.concept-section { padding: 8px 20px 48px; background: var(--paper); }
.concept-section h2, .zone-section h2, .check-section h2, .faq-section h2 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  margin: 0 0 14px;
  text-align: center;
}
.lead {
  max-width: 46em;
  margin: 0 auto 36px;
  text-align: center;
  color: var(--sub);
}
.concept-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .concept-grid { grid-template-columns: repeat(2, 1fr); }
}
.concept-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 30px 26px;
}
.drop {
  display: block;
  width: 34px; height: 34px;
  margin: 0 0 16px;
  background: linear-gradient(135deg, var(--accent-light), var(--accent));
  border-radius: 0 50% 50% 50%;
  transform: rotate(45deg);
}
.concept-card h3 { margin: 0 0 10px; font-size: 1.2rem; color: var(--primary); font-family: "Yeon Sung", cursive; font-weight: 400; }
.concept-card p { margin: 0; color: var(--sub); }
.concept-card a { color: var(--primary); text-decoration: underline; }

/* ---------- 부위 섹션 ---------- */
.zone-section { padding: 8px 20px 48px; }
.zone-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .zone-grid { grid-template-columns: repeat(3, 1fr); }
}
.zone-card {
  position: relative;
  padding: 30px 22px 24px;
  border-radius: var(--radius);
  background: #fff;
  border: 1px solid var(--line);
  border-top: 5px solid var(--accent);
}
.zone-card h3 { margin: 0 0 10px; font-size: 1.12rem; color: var(--primary); font-family: "Yeon Sung", cursive; font-weight: 400; }
.zone-card p { margin: 0; color: var(--sub); font-size: 0.97rem; }
.zone-card a { color: var(--primary); text-decoration: underline; }

/* ---------- 한계 섹션 ---------- */
.limit-section { padding: 8px 20px 48px; background: var(--paper); }
.split-inner {
  display: flex;
  flex-direction: column;
  gap: 26px;
  align-items: center;
}
.split-text h2 {
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  margin: 0 0 16px;
  text-align: left;
}
.split-text p { margin: 0 0 14px; color: var(--sub); }
.split-text p:last-child { margin-bottom: 0; }
.split-text strong { color: var(--primary); }

.split-visual { display: flex; justify-content: center; width: 100%; }
.crack-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 68px; height: 68px;
  border-radius: 50% 50% 50% 6px;
  background: #fff;
  border: 2px solid var(--accent);
  color: var(--primary);
  font-family: "Yeon Sung", cursive;
  font-size: 2rem;
  transform: rotate(-8deg);
}

@media (min-width: 768px) {
  .split-inner { flex-direction: row; align-items: flex-start; }
  .split-inner .split-text { flex: 1.5; }
  .split-inner .split-visual { flex: 0 0 120px; padding-top: 6px; }
}

/* ---------- 판단 체크 섹션 ---------- */
.check-section { padding: 8px 20px 48px; }
.check-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .check-grid { grid-template-columns: repeat(3, 1fr); }
}
.check-card {
  padding: 26px 22px;
  border-radius: var(--radius);
  background: var(--primary);
  color: #dff3fa;
}
.check-num {
  margin: 0 0 10px;
  font-family: "Yeon Sung", cursive;
  font-size: 1.6rem;
  color: var(--accent-light);
}
.check-card h3 { margin: 0 0 10px; font-size: 1.08rem; color: #fff; font-family: "Yeon Sung", cursive; font-weight: 400; }
.check-card p { margin: 0; color: #bfe0eb; font-size: 0.95rem; }
.check-note {
  max-width: 46em;
  margin: 30px auto 0;
  text-align: center;
  color: var(--sub);
}

/* ---------- FAQ ---------- */
.faq-section { padding: 8px 20px 48px; background: var(--paper); }
.accordion-item { border-bottom: 1px solid var(--line); }
.accordion-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 18px 4px;
  min-height: 44px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.accordion-trigger::after {
  content: "+";
  color: var(--accent);
  font-size: 1.3rem;
  flex-shrink: 0;
}
.accordion-trigger[aria-expanded="true"]::after { content: "\2212"; }
.accordion-panel { padding: 0 4px 18px; }
.accordion-panel p { margin: 0; color: var(--sub); }

/* ---------- CTA ---------- */
.cta-section {
  padding: 56px 20px 64px;
  background: linear-gradient(160deg, var(--primary), #04516f);
  color: #fff;
  text-align: center;
}
.cta-inner h2 {
  color: #fff;
  font-size: clamp(1.7rem, 4vw, 2.3rem);
  margin: 0 0 12px;
}
.cta-inner p { margin: 0 0 26px; color: #cdeaf3; }
.cta-inner .hero-cta { justify-content: center; }
.cta-inner .btn-primary { background: linear-gradient(135deg, var(--accent-light), var(--accent)); color: #04303f; box-shadow: 0 8px 22px -6px rgba(142, 202, 230, 0.55); }
.cta-inner .btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,0.5); }
.cta-inner .btn-ghost:hover { background: rgba(255,255,255,0.1); }

/* ---------- 푸터 ---------- */
.site-footer {
  background: #011c29;
  color: #a9cbd8;
  padding: 16px 20px;
}
.site-footer address {
  max-width: 1100px;
  margin: 0 auto 16px;
  font-style: normal;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #7ba3b3;
}
.site-footer address a { color: #fff; text-decoration: none; }
/* ---------- 반응형 여백 확장 ---------- */
@media (min-width: 1024px) {
  .concept-section, .zone-section, .limit-section, .check-section, .faq-section, .cta-section {
    padding-left: 32px;
    padding-right: 32px;
  }
}
@media (min-width: 1280px) {
  .concept-section, .zone-section, .limit-section, .check-section, .faq-section, .cta-section {
    padding-left: 40px;
    padding-right: 40px;
  }
}

/* 현장 사진 */
.site-photo-section { max-width: 1000px; margin: 0 auto; padding: 40px 20px; }
.site-photo-section h2 { color: var(--primary); margin: 0 0 18px; }
.site-photo-grid { display: grid; grid-template-columns: 1fr; gap: 12px; }
.site-photo-grid picture { display: block; aspect-ratio: 4/3; overflow: hidden; }
.site-photo-grid img { width: 100%; height: 100%; object-fit: cover; }
@media (min-width: 640px) { .site-photo-grid { grid-template-columns: repeat(2, 1fr); } }

/* 표 (비용/절차 요약 테이블) */
.table-section { padding: 48px 20px; }
.table-scroll { overflow-x: auto; margin: 20px 0; }
.table-scroll table { width: 100%; border-collapse: collapse; min-width: 560px; }
.table-scroll th, .table-scroll td { border: 1px solid var(--line); padding: 12px 14px; text-align: left; font-size: 0.95rem; vertical-align: top; }
.table-scroll thead th { background: var(--accent); color: var(--ink); font-weight: 700; }
.table-scroll tbody tr:nth-child(odd) { background: var(--paper); }