/* 영등포구배수로시공 - split-hero design: Do Hyeon display font, navy ink + amber accent */

:root {
  --ink: #0F2540;
  --ink-soft: #1B3A5C;
  --amber: #FFC107;
  --amber-dark: #C98F00;
  --paper: #F5F7FA;
  --line: #D9DEE5;
  --text: #1E2833;
  --font-display: "Do Hyeon", "Malgun Gothic", sans-serif;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", "Apple SD Gothic Neo", "Malgun Gothic", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: #fff;
  line-height: 1.7;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 400;
  color: var(--ink);
  letter-spacing: 0.01em;
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--amber);
  color: var(--ink);
  padding: 0.75rem 1.25rem;
  z-index: 200;
  font-weight: bold;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  background: var(--ink);
  color: #fff;
  position: relative;
  z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.25rem;
}
.wordmark {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: #fff;
  text-decoration: none;
}
.main-nav ul {
  display: flex;
  gap: 1.75rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  color: #E8ECF1;
  font-size: 0.98rem;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  color: var(--amber);
}
.main-nav { display: none; }

.hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: 0;
  padding: 0.5rem;
  cursor: pointer;
}
.hamburger span {
  width: 26px;
  height: 3px;
  background: var(--amber);
  border-radius: 2px;
}
.mobile-nav {
  background: var(--ink-soft);
  border-top: 1px solid rgba(255,255,255,0.15);
}
.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5rem 1.25rem 1rem;
}
.mobile-nav a {
  display: block;
  padding: 0.65rem 0;
  color: #fff;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

@media (min-width: 860px) {
  .main-nav { display: block; }
  .hamburger { display: none; }
  .mobile-nav { display: none !important; }
}

/* Split hero */
.split-hero {
  display: flex;
  flex-direction: column;
}
.hero-photo {
  height: 46vh;
  min-height: 260px;
  overflow: hidden;
}
.hero-photo img,
.hero-photo picture {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero-photo img { height: 100%; }
.hero-text {
  background: var(--ink);
  color: #fff;
  padding: 2.5rem 1.5rem 2.75rem;
}
.hero-text h1 {
  color: #fff;
  font-size: 2rem;
  margin: 0 0 1rem;
  line-height: 1.3;
}
.hero-text .lead {
  color: #D7DEE7;
  font-size: 1.02rem;
  max-width: 46em;
  margin: 0 0 1.75rem;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 0.75rem; }

@media (min-width: 860px) {
  .split-hero { flex-direction: row; min-height: 520px; }
  .hero-photo { height: auto; min-height: 520px; width: 50%; }
  .hero-text {
    width: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3rem 4rem;
  }
  .hero-text h1 { font-size: 2.6rem; }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.85rem 1.6rem;
  border-radius: 6px;
  font-weight: bold;
  text-decoration: none;
  font-size: 1rem;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--amber);
  color: var(--ink);
}
.btn-primary:hover { background: var(--amber-dark); }
.btn-outline {
  border-color: var(--amber);
  color: var(--amber);
}
.hero-text .btn-outline { color: #fff; border-color: #fff; }
.hero-text .btn-outline:hover { background: rgba(255,255,255,0.1); }

/* Content sections */
.content-block {
  max-width: 1200px;
  margin: 0 auto;
  padding: 3rem 1.5rem;
}
.content-block h2 {
  font-size: 1.5rem;
  margin: 0 0 1.1rem;
  position: relative;
  padding-left: 1rem;
  border-left: 6px solid var(--amber);
}
.content-block p { font-size: 1.02rem; max-width: 68em; }

.content-block--alt {
  background: var(--paper);
  max-width: none;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 3rem 1.5rem;
}
.content-block--alt .content-media,
.content-block--alt .content-text {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}
.content-media img {
  border-radius: 10px;
  border: 3px solid var(--ink);
}

@media (min-width: 900px) {
  .content-block--alt {
    flex-direction: row;
    align-items: center;
    gap: 3rem;
    padding: 3.5rem 3rem;
  }
  .content-block--alt .content-media { flex: 0 0 42%; margin: 0; }
  .content-block--alt .content-text { flex: 1; margin: 0; }
  .content-block--reverse { flex-direction: row-reverse; }
}

/* Checkpoints */
.checkpoints ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.9rem;
}
.checkpoints li {
  background: var(--paper);
  border: 1px solid var(--line);
  border-left: 5px solid var(--amber);
  padding: 1rem 1.25rem;
  border-radius: 4px;
  font-size: 0.98rem;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 1.25rem 0;
}
.faq-item:last-child { border-bottom: none; }
.faq-item h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  margin: 0 0 0.5rem;
}
.faq-item p { margin: 0; }

/* CTA section */
.cta-section {
  background: var(--ink);
  color: #fff;
  text-align: center;
  padding: 3.5rem 1.5rem;
}
.cta-section h2 {
  color: #fff;
  font-size: 1.6rem;
  border: none;
  padding: 0;
  margin: 0 0 0.75rem;
}
.cta-section p { color: #D7DEE7; margin: 0 0 1.5rem; }
.cta-section .btn { margin: 0 0.4rem; }
.cta-section .btn-outline { color: #fff; border-color: #fff; }

/* Footer */
.site-footer {
  background: var(--ink-soft);
  color: #D7DEE7;
  padding: 2.5rem 1.5rem 6rem;
  font-size: 0.92rem;
}
.site-footer nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  margin: 0 0 1.5rem;
  padding: 0;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}
.site-footer a { text-decoration: none; color: #D7DEE7; }
.site-footer a:hover { color: var(--amber); }
.site-footer address {
  font-style: normal;
  max-width: 1200px;
  margin: 0 auto 1rem;
  line-height: 1.8;
}
.site-footer p { max-width: 1200px; margin: 0 auto; opacity: 0.7; }

@media (min-width: 860px) {
  .site-footer { padding-bottom: 2.5rem; }
}

/* Mobile sticky CTA */
.mobile-cta-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  z-index: 150;
}
.mobile-cta {
  flex: 1;
  text-align: center;
  padding: 0.95rem 0;
  text-decoration: none;
  font-weight: bold;
}
.mobile-cta.call { background: var(--amber); color: var(--ink); }
.mobile-cta.inquiry { background: var(--ink); color: #fff; }

@media (min-width: 860px) {
  .mobile-cta-bar { display: none; }
}