:root {
  --blue: #3992ff;
  --blue-dark: #1f74e0;
  --navy: #0f172a;
  --navy-2: #1a2332;
  --text: #1c1c1c;
  --muted: #5f6368;
  --bg: #eef2f7;
  --card-bg: #f2f6fc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Noto Sans KR", "Malgun Gothic", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  padding-bottom: 72px; /* space for fixed call button */
}

h1, h2, h3 { line-height: 1.4; }

/* Header */
.site-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 20px;
  background: var(--navy);
  border-bottom: 1px solid #232f45;
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { font-weight: 700; font-size: 18px; color: #fff; }
.header-call {
  color: var(--blue);
  font-weight: 700;
  text-decoration: none;
  font-size: 16px;
}

/* Hero */
.hero {
  position: relative;
  overflow: hidden;
  text-align: center;
  padding: 40px 20px 32px;
  background: linear-gradient(180deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  border-radius: 0 0 28px 28px;
}
.hero-watermark {
  position: absolute;
  z-index: 0;
  top: 50%;
  right: -30px;
  width: 220px;
  height: auto;
  transform: translateY(-50%);
  opacity: 0.12;
  filter: brightness(0) invert(1);
  -webkit-mask-image: linear-gradient(135deg, #000 40%, transparent 90%);
  mask-image: linear-gradient(135deg, #000 40%, transparent 90%);
  pointer-events: none;
}
.hero h1,
.hero .hero-sub,
.hero .cta-btn,
.hero .cta-secondary {
  position: relative;
  z-index: 1;
}
.hero h1 {
  font-size: 26px;
  margin: 0 0 12px;
  color: #fff;
}
.hero-sub {
  color: #b9c3d6;
  font-size: 16px;
  margin: 0 0 20px;
}

.cta-btn {
  display: inline-block;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 18px;
  padding: 16px 28px;
  border-radius: 999px;
  text-decoration: none;
  box-shadow: 0 10px 24px rgba(57, 146, 255, 0.35);
}
.cta-btn:active { background: var(--blue-dark); }

.cta-secondary {
  display: inline-block;
  background: transparent;
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  padding: 12px 24px;
  border: 1px solid #465061;
  border-radius: 999px;
  text-decoration: none;
  margin-top: 10px;
}
.cta-secondary:active { background: rgba(255,255,255,0.08); }

/* Page shell: every section below the hero floats as its own rounded
   card on a light-gray page background, instead of full-bleed flat
   color bands -- a deliberately different visual rhythm. */
.page-shell {
  max-width: 720px;
  margin: 0 auto;
  padding: 18px 14px 0;
}
.section-card {
  background: #fff;
  border-radius: 18px;
  padding: 26px 22px;
  margin-bottom: 16px;
  box-shadow: 0 4px 18px rgba(15, 23, 42, 0.06);
}

/* Trust strip: 2x2 icon-box grid instead of a row of pills */
.trust-strip {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  padding: 16px;
}
.trust-item {
  background: #fff;
  border-radius: 14px;
  padding: 14px 10px;
  font-weight: 700;
  font-size: 13px;
  text-align: center;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.05);
  border-top: 3px solid var(--blue);
}

/* Symptom sections */
.symptoms h2 {
  font-size: 19px;
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.symptoms .section-card + .section-card { margin-top: 16px; }
.symptoms p {
  color: var(--muted);
  font-size: 15px;
  margin: 0 0 12px;
}
.symptoms img,
.process-images img {
  width: 100%;
  border-radius: 14px;
  display: block;
}

.case-figure {
  margin: 14px 0 0;
}
.case-figure figcaption {
  font-size: 12px;
  color: var(--muted);
  margin-top: 6px;
}

.symptom-detail .detail-intro,
.symptom-detail .detail-outro {
  color: var(--muted);
  font-size: 15px;
  margin: 0 0 10px;
}
.symptom-detail .detail-outro {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px dashed #e2e8f0;
}
.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 14px 0 0;
}
.detail-box {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 12px 14px;
}
.detail-box .block-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-size: 12px;
  font-weight: 800;
  margin-bottom: 8px;
}
.symptom-detail .detail-list {
  margin: 0;
  padding-left: 16px;
}
.symptom-detail .detail-list li {
  font-size: 13px;
  color: var(--text);
  margin-bottom: 4px;
}

/* Topic highlight (region-specific featured issue) */
.topic-highlight h2 {
  font-size: 18px;
  margin: 0 0 10px;
}
.topic-highlight > p {
  color: var(--muted);
  font-size: 15px;
  margin: 0 0 16px;
}
.topic-highlight .faq-item {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 14px 16px;
  margin: 0;
}

/* Service area (출장 가능 지역) */
.service-area h2 {
  font-size: 18px;
  margin: 0 0 16px;
}
.service-area h3 {
  font-size: 13px;
  color: var(--muted);
  font-weight: 700;
  margin: 16px 0 8px;
}
.service-area h3:first-of-type { margin-top: 0; }
.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.chip-list li {
  background: var(--card-bg);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  color: var(--text);
}

/* Scope / process / cost / faq */
.scope h2, .process h2, .cost h2, .faq h2 {
  font-size: 18px;
  margin: 0 0 16px;
}
.scope-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.scope-list li {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 10px 12px;
  font-size: 13px;
  font-weight: 600;
}
.process-list, .cost-list {
  padding-left: 20px;
  margin: 0 0 16px;
}
.cost-list li { margin-bottom: 8px; font-size: 15px; }
.process-list li { margin-bottom: 10px; font-size: 15px; }

.process-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}

.cost-note {
  color: var(--muted);
  font-size: 13px;
  margin: 0;
}

/* FAQ accordion (native <details>) -- different interaction shape */
.faq-item {
  margin-bottom: 10px;
  border: 1px solid #e7ecf3;
  border-radius: 12px;
  padding: 0;
  overflow: hidden;
}
.faq-item summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  color: var(--blue-dark);
  font-size: 20px;
  font-weight: 800;
  margin-left: 10px;
}
.faq-item[open] summary::after { content: "–"; }
.faq-item p {
  color: var(--muted);
  font-size: 14px;
  margin: 0;
  padding: 0 16px 16px;
}

/* Bottom CTA */
.bottom-cta {
  text-align: center;
  padding: 36px 22px;
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
}
.bottom-cta h2 {
  font-size: 19px;
  margin: 0 0 18px;
}

.site-footer {
  text-align: center;
  padding: 20px;
  color: var(--muted);
  font-size: 13px;
}

/* Fixed mobile call button */
.fixed-call-btn {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: block;
  text-align: center;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  padding: 16px;
  text-decoration: none;
  z-index: 20;
}

@media (max-width: 480px) {
  .detail-grid { grid-template-columns: 1fr; }
}

@media (min-width: 700px) {
  .hero h1 { font-size: 32px; }
  .process-images { grid-template-columns: 1fr 1fr; }
}