:root {
  --primary: #455A64;
  --accent: #4DB6AC;
  --bg: #F4F7F8;
  --radius: 16px;
  --line: rgba(69, 90, 100, .16);
  --max: 800px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--primary);
  font-family: 'Pretendard Variable', -apple-system, sans-serif;
  font-weight: 400;
  font-display: swap;
  line-height: 1.7;
  overflow-x: hidden;
}

h1, h2 {
  font-family: 'Gmarket Sans', 'Pretendard Variable', sans-serif;
  font-weight: 700;
  font-display: swap;
  color: var(--primary);
}

h3 {
  font-family: 'Pretendard Variable', sans-serif;
  font-weight: 500;
  color: var(--primary);
  margin: 1.5em 0 .5em;
}

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

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

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 2px;
}

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

/* header */
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--primary);
}

.logo-word {
  font-family: 'Gmarket Sans', sans-serif;
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: .03em;
}

.nav-toggle summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  padding: 6px;
  border-radius: 8px;
}
.nav-toggle summary::-webkit-details-marker { display: none; }

.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  display: block;
  padding: 10px 4px;
  text-decoration: none;
  font-weight: 500;
}
.site-nav a:hover { color: var(--accent); }

@media (max-width: 767px) {
  .nav-toggle {
    position: relative;
  }
  .nav-toggle .site-nav {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 16px;
    min-width: 200px;
    box-shadow: 0 8px 24px rgba(69,90,100,.12);
  }
}

@media (min-width: 768px) {
  .nav-toggle summary { display: none; }
  .nav-toggle .site-nav { display: flex !important; }
  .site-nav ul {
    display: flex;
    gap: 22px;
  }
}

/* hero */
.hero { padding: 40px 20px 20px; }

.hero-card {
  max-width: var(--max);
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  border: 1px solid var(--line);
}

.hero-card h1 {
  font-size: clamp(1.6rem, 4.5vw, 2.2rem);
  margin: 0 0 16px;
  line-height: 1.35;
}

.hero-lead {
  font-size: 1rem;
  max-width: 560px;
  margin: 0 auto 28px;
}

/* buttons */
.cta {
  display: inline-block;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 700;
  padding: 14px 28px;
  transition: transform .15s ease, background .15s ease;
}
@media (prefers-reduced-motion: reduce) {
  .cta { transition: none; }
}

.cta--call {
  background: var(--primary);
  color: #fff;
}
.cta--call:hover { background: #37474F; }

.cta--outline-call,
.cta--outline-sms {
  background: #fff;
  color: var(--primary);
  border: 2px solid var(--accent);
  padding: 12px 24px;
}
.cta--outline-call:hover,
.cta--outline-sms:hover {
  background: var(--accent);
  color: #fff;
}

/* content */
.content {
  max-width: var(--max);
  margin: 0 auto;
  padding: 20px 20px 60px;
}

.section {
  padding: 36px 0;
  border-top: 1px solid var(--line);
}
.section:first-child { border-top: none; }

.section h2 {
  font-size: clamp(1.25rem, 3vw, 1.55rem);
  display: inline-block;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--accent);
  margin: 0 0 18px;
}

.callout {
  background: #fff;
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-top: 18px;
}
.callout strong {
  display: block;
  margin-bottom: 6px;
  color: var(--primary);
}
.callout p { margin: 0; }

/* table */
.table-wrap {
  overflow-x: auto;
  margin-top: 18px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  min-width: 480px;
}
th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  font-size: .95rem;
}
th {
  background: var(--bg);
  font-weight: 700;
}
tbody tr:last-child td { border-bottom: none; }

/* checklist */
.checklist {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.checklist li {
  position: relative;
  background: #fff;
  border-radius: var(--radius);
  padding: 12px 16px 12px 42px;
  border: 1px solid var(--line);
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 2px solid var(--accent);
}
.checklist li::after {
  content: "";
  position: absolute;
  left: 21px;
  top: 46%;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--accent);
  border-bottom: 2px solid var(--accent);
  transform: translateY(-60%) rotate(45deg);
}

/* branch */
.branch {
  margin-top: 18px;
  display: grid;
  gap: 12px;
}
.branch-q {
  background: var(--primary);
  color: #fff;
  border-radius: var(--radius);
  padding: 14px 18px;
  display: flex;
  gap: 10px;
  align-items: baseline;
}
.branch-q p { margin: 0; font-weight: 500; }
.branch-tag {
  font-size: .78rem;
  font-weight: 700;
  background: rgba(255,255,255,.2);
  padding: 2px 8px;
  border-radius: 999px;
  flex-shrink: 0;
}
.branch-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
@media (max-width: 480px) {
  .branch-row { grid-template-columns: 1fr; }
}
.branch-path {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.branch-path__label {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 999px;
  padding: 1px 10px;
  margin-bottom: 8px;
}
.branch-path p { margin: 0; font-size: .95rem; }

/* faq */
.faq { margin-top: 18px; display: grid; gap: 10px; }
.faq-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
}
.faq-item summary {
  cursor: pointer;
  font-weight: 700;
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  float: right;
  color: var(--accent);
  font-weight: 700;
}
.faq-item[open] summary::after { content: "-"; }
.faq-item p { margin: 12px 0 0; font-size: .95rem; }

/* figure */
.shot {
  margin: 32px auto;
  max-width: 900px;
}
.shot img {
  border-radius: var(--radius);
  width: 100%;
}
.shot figcaption {
  margin-top: 8px;
  font-size: .85rem;
  color: #607580;
  text-align: center;
}

/* cta block */
.cta-block {
  margin-top: 20px;
  padding: 32px 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  text-align: center;
}
.cta-block p { margin: 0 0 18px; }
.cta-block__actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* related links */
.related {
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--line);
}
.related-title {
  font-family: 'Gmarket Sans', 'Pretendard Variable', sans-serif;
  font-weight: 700;
  font-size: 1.2rem;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--accent);
  display: inline-block;
  margin: 0 0 16px;
}
.related ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}
@media (max-width: 480px) {
  .related ul { grid-template-columns: 1fr; }
}
.related a {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 16px;
  text-decoration: none;
  font-weight: 500;
}
.related a:hover { border-color: var(--accent); color: var(--accent); }

/* footer */
footer {
  background: var(--primary);
  color: #EDEFEF;
  padding: 32px 20px;
  text-align: center;
}
footer address {
  font-style: normal;
  line-height: 1.8;
  font-size: .9rem;
}
.footer-home a {
  color: #EDEFEF;
  font-size: .9rem;
}
footer small {
  display: block;
  margin-top: 16px;
  font-size: .78rem;
  color: #C7D0D3;
}