/* 계양구배수로시공 — diamond-spine timeline, Single Day / purple+teal */

:root {
  --ink: #3C1642;
  --ink-soft: #6b3e78;
  --accent: #086375;
  --accent-soft: #0aa3bd;
  --paper: #FAF6FB;
  --panel: #ffffff;
  --line: #e3d6e9;
  --text: #2b1230;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Single Day", "Malgun Gothic", sans-serif;
  font-size: 19px;
  line-height: 1.75;
  color: var(--text);
  background: var(--paper);
}

h1, h2 {
  font-family: "Single Day", "Malgun Gothic", sans-serif;
  color: var(--ink);
  font-weight: 400;
  line-height: 1.35;
}

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

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

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 0.6em 1.2em;
  z-index: 200;
}
.skip-link:focus {
  left: 0.5em;
  top: 0.5em;
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--panel);
  border-bottom: 3px solid var(--ink);
}
.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9em 1.2em;
}
.wordmark {
  font-size: 1.7rem;
  color: var(--ink);
  text-decoration: none;
  position: relative;
  padding-left: 1.3em;
}
.wordmark::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 0.85em;
  height: 0.85em;
  transform: translateY(-50%) rotate(45deg);
  background: var(--accent);
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.8em;
  margin: 0;
  padding: 0;
}
.main-nav a {
  text-decoration: none;
  color: var(--ink);
  font-size: 1.05rem;
  padding-bottom: 0.2em;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--accent);
}
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  background: none;
  border: 2px solid var(--ink);
  cursor: pointer;
}
.hamburger span {
  display: block;
  height: 2px;
  margin: 0 8px;
  background: var(--ink);
}
.mobile-nav ul {
  list-style: none;
  margin: 0;
  padding: 0.5em 1.2em 1em;
}
.mobile-nav a {
  display: block;
  padding: 0.7em 0;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  font-size: 1.1rem;
}

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

/* ---------- hero ---------- */
.hero {
  position: relative;
  background: linear-gradient(160deg, var(--ink) 0%, var(--accent) 100%);
  color: #fff;
  overflow: hidden;
}
.hero-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 3.2em 1.3em 2.2em;
  text-align: center;
}
.hero h1 {
  color: #fff;
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  margin: 0 0 0.5em;
}
.hero .lead {
  font-size: 1.3rem;
  max-width: 640px;
  margin: 0 auto;
  color: #f2e8f5;
}
.hero picture {
  display: block;
  max-width: 1000px;
  margin: 0 auto;
}
.hero img {
  width: 100%;
  height: auto;
  border-top: 6px solid var(--ink);
}

/* ---------- timeline ---------- */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  padding: 3em 1.2em 1em;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 30px;
  top: 0.4em;
  bottom: 2em;
  width: 4px;
  background: linear-gradient(180deg, var(--ink), var(--accent));
}
@media (min-width: 640px) {
  .timeline::before { left: 39px; }
}

.tl-item {
  position: relative;
  padding-left: 4.4em;
  margin-bottom: 3em;
}
.tl-marker {
  position: absolute;
  left: 0;
  top: 0.1em;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Single Day", sans-serif;
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--ink);
  z-index: 1;
}
.tl-marker::before {
  content: "";
  position: absolute;
  inset: 0;
  transform: rotate(45deg);
  background: var(--panel);
  border: 4px solid var(--ink);
  z-index: -1;
}
.tl-item:nth-child(even) .tl-marker { color: var(--accent); }
.tl-item:nth-child(even) .tl-marker::before { border-color: var(--accent); }

.tl-content {
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 6px solid var(--accent);
  border-radius: 4px;
  padding: 1.6em 1.7em;
  box-shadow: 0 6px 18px rgba(60, 22, 66, 0.07);
}
.tl-item:nth-child(even) .tl-content {
  border-left-color: var(--ink);
}

.tl-content h2 {
  font-size: 1.6rem;
  margin-top: 0;
  margin-bottom: 0.6em;
}
.tl-content p {
  margin: 0 0 1em;
}
.tl-content picture {
  margin-top: 1.2em;
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
}

.checklist {
  margin: 0;
  padding-left: 0;
  list-style: none;
}
.checklist li {
  position: relative;
  padding-left: 1.8em;
  margin-bottom: 0.8em;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.4em;
  width: 0.65em;
  height: 0.65em;
  transform: rotate(45deg);
  background: var(--accent);
}

.faq-item {
  margin-bottom: 1.2em;
}
.faq-item .q {
  font-weight: 700;
  color: var(--ink);
  margin: 0 0 0.3em;
}
.faq-item .a {
  margin: 0;
  color: var(--text);
}

/* ---------- CTA ---------- */
.cta-block {
  background: var(--ink);
  color: #fff;
  text-align: center;
  padding: 3em 1.3em;
  margin-top: 1em;
}
.cta-block h2 {
  color: #fff;
  font-size: 1.9rem;
  margin: 0 0 0.4em;
}
.cta-block p {
  color: #e9d9ee;
  margin: 0 0 1.4em;
  font-size: 1.1rem;
}
.cta-buttons {
  display: flex;
  gap: 1em;
  justify-content: center;
  flex-wrap: wrap;
}
.btn {
  display: inline-block;
  padding: 0.85em 1.8em;
  border-radius: 999px;
  text-decoration: none;
  font-size: 1.05rem;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-outline {
  background: transparent;
  color: #fff;
  border-color: #fff;
}
.btn-primary:hover { background: var(--accent-soft); }
.btn-outline:hover { background: rgba(255,255,255,0.12); }

/* ---------- footer ---------- */
.site-footer {
  background: #2a0f31;
  color: #d8c6dd;
  padding: 2.4em 1.3em 6em;
  text-align: center;
}
.site-footer nav ul {
  list-style: none;
  display: flex;
  gap: 1.4em;
  justify-content: center;
  flex-wrap: wrap;
  margin: 0 0 1.4em;
  padding: 0;
}
.site-footer nav a {
  color: #ecd9f0;
  text-decoration: none;
}
.site-footer nav a:hover { color: var(--accent-soft); }
.site-footer address {
  font-style: normal;
  line-height: 1.9;
  margin-bottom: 1em;
}
.site-footer address a { color: var(--accent-soft); }
.site-footer small { color: #a98cae; }

/* ---------- mobile cta bar ---------- */
.mobile-cta-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 150;
}
@media (max-width: 780px) {
  .mobile-cta-bar { display: flex; }
}
.mobile-cta {
  flex: 1;
  text-align: center;
  padding: 1em 0;
  text-decoration: none;
  font-size: 1.05rem;
  color: #fff;
}
.mobile-cta.call { background: var(--ink); }
.mobile-cta.inquiry { background: var(--accent); }

@media (max-width: 480px) {
  body { font-size: 18px; }
  .tl-item { padding-left: 3.8em; }
  .tl-marker { width: 50px; height: 50px; }
  .timeline::before { left: 25px; }
}