/* 화성배수로시공 — Gowun Batang serif, ink #2B2D42 / accent #8D99AE, zigzag editorial layout */

:root {
  --ink: #2B2D42;
  --accent: #8D99AE;
  --paper: #F5F3EE;
  --paper-alt: #EDEAE2;
  --line: #D8D3C6;
  --max: 1100px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Gowun Batang", serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.9;
  font-size: 17px;
  letter-spacing: 0.01em;
}

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

a { color: var(--ink); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.7em 1.2em;
  z-index: 200;
}
.skip-link:focus { left: 0; }

/* Header */
.site-header {
  background: var(--paper);
  border-bottom: 1px solid var(--ink);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1em 1.5em;
}
.wordmark {
  font-weight: 700;
  font-size: 1.3rem;
  text-decoration: none;
  letter-spacing: 0.06em;
  color: var(--ink);
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 2em;
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  font-size: 1rem;
  letter-spacing: 0.03em;
  border-bottom: 1px solid transparent;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--ink);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: none;
  border: 1px solid var(--ink);
  cursor: pointer;
}
.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 0 auto;
  background: var(--ink);
}
.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5em 1.5em 1.2em;
}
.mobile-nav a {
  display: block;
  padding: 0.7em 0;
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

@media (max-width: 780px) {
  .main-nav { display: none; }
  .hamburger { display: flex; }
}

/* Main / sections */
main { max-width: var(--max); margin: 0 auto; padding: 0 1.5em; }

section { padding: 4.5em 0; }

h1, h2, h3 {
  font-family: "Gowun Batang", serif;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}

h2 {
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  margin: 0 0 1.1em;
  padding-bottom: 0.5em;
  border-bottom: 2px solid var(--accent);
  display: inline-block;
}

p { margin: 0 0 1.2em; }

/* Hero */
.hero {
  padding-top: 2.5em;
  display: grid;
  gap: 2em;
}
.hero-img {
  width: 100%;
  border: 1px solid var(--ink);
}
.hero h1 {
  font-size: 2.4rem;
  letter-spacing: 0.04em;
  margin: 0.6em 0 0.5em;
}
.hero .lead {
  font-size: 1.1rem;
  color: var(--ink);
  border-left: 4px solid var(--accent);
  padding-left: 1em;
  max-width: 62ch;
}

@media (min-width: 860px) {
  .hero { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
  .hero-text { order: 2; }
  .hero picture { order: 1; }
}

/* Zigzag sections */
.zigzag {
  display: grid;
  gap: 2.2em;
  align-items: center;
  border-top: 1px solid var(--line);
}
.zz-media img { border: 1px solid var(--ink); }

@media (min-width: 860px) {
  .zigzag { grid-template-columns: 1fr 1.1fr; }
  .zigzag .zz-media { order: 1; }
  .zigzag .zz-text { order: 2; }
  .zigzag.reverse .zz-media { order: 2; }
  .zigzag.reverse .zz-text { order: 1; }
}

.zz-text h2 { font-size: 1.45rem; }

/* Checkpoints */
.checkpoint-block {
  background: var(--paper-alt);
  border-top: 3px double var(--ink);
  border-bottom: 3px double var(--ink);
  padding: 3em 2em;
}
.check-list {
  list-style: none;
  margin: 1.5em 0 0;
  padding: 0;
  display: grid;
  gap: 0.9em;
}
.check-list li {
  position: relative;
  padding-left: 1.8em;
}
.check-list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.8em;
  top: 0.3em;
}

/* FAQ */
.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 1.2em 0;
}
.faq-item h3 {
  font-size: 1.05rem;
  margin: 0 0 0.6em;
  padding-left: 1.6em;
  position: relative;
}
.faq-item h3::before {
  content: "Q";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}
.faq-a {
  color: var(--ink);
  margin: 0;
  padding-left: 1.6em;
  max-width: 68ch;
  position: relative;
}
.faq-a::before {
  content: "A";
  position: absolute;
  left: 0;
  color: var(--ink);
  font-weight: 700;
}

/* CTA */
.cta-block {
  text-align: center;
  background: var(--ink);
  color: var(--paper);
  border-radius: 2px;
  padding: 3.5em 2em;
}
.cta-block h2 {
  color: var(--paper);
  border-bottom-color: var(--accent);
}
.cta-block p { color: var(--paper); max-width: 60ch; margin-left: auto; margin-right: auto; }
.cta-buttons {
  display: flex;
  gap: 1em;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.5em;
}
.btn {
  display: inline-block;
  padding: 0.9em 1.8em;
  text-decoration: none;
  font-family: "Gowun Batang", serif;
  font-size: 1rem;
  letter-spacing: 0.03em;
  border-radius: 2px;
  border: 1px solid var(--paper);
}
.btn-primary { background: var(--accent); color: #000; border-color: var(--accent); font-weight: 700; }
.btn-outline { background: transparent; color: var(--paper); }

/* Footer */
.site-footer {
  background: var(--paper-alt);
  border-top: 1px solid var(--ink);
  padding: 3em 1.5em 2em;
  text-align: center;
}
.site-footer nav ul {
  list-style: none;
  display: flex;
  gap: 1.5em;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 0 1.5em;
  padding: 0;
}
.site-footer nav a { text-decoration: none; }
address {
  font-style: normal;
  color: var(--ink);
  line-height: 1.8;
  margin-bottom: 1em;
}
.site-footer small { color: var(--ink); opacity: 0.7; }

/* Mobile CTA bar */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
}
@media (max-width: 780px) {
  .mobile-cta-bar { display: flex; }
  body { padding-bottom: 60px; }
}
.mobile-cta {
  flex: 1;
  text-align: center;
  padding: 1em 0;
  text-decoration: none;
  font-family: "Gowun Batang", serif;
  font-size: 1rem;
}
.mobile-cta.call { background: var(--ink); color: var(--paper); }
.mobile-cta.inquiry { background: var(--accent); color: var(--ink); }