:root {
  --ink: #17322c;
  --muted: #61736e;
  --paper: #fbfdf9;
  --white: #fff;
  --mint: #dff6e9;
  --green: #087a5b;
  --green-dark: #075d47;
  --lime: #c9ef72;
  --yellow: #ffdc6a;
  --line: #dce8e2;
  --shadow: 0 18px 50px rgba(14, 78, 59, .11);
  --radius: 24px;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Pretendard, "Noto Sans KR", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  word-break: keep-all;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; }
.skip-link {
  position: absolute; left: 16px; top: -80px; z-index: 100;
  padding: 10px 16px; background: var(--ink); color: #fff; border-radius: 8px;
}
.skip-link:focus { top: 16px; }
.wrap { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.site-header {
  position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(220,232,226,.8);
  background: rgba(251,253,249,.9); backdrop-filter: blur(16px);
}
.nav { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 900; }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px;
  background: var(--green); color: #fff; font-weight: 900;
}
.nav-links { display: flex; align-items: center; gap: 26px; font-weight: 700; font-size: 15px; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--green); }
.menu-btn { display: none; border: 0; background: transparent; font: inherit; font-weight: 800; cursor: pointer; }

.hero { padding: 76px 0 54px; overflow: hidden; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 56px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px; margin: 0 0 18px;
  padding: 7px 12px; border-radius: 999px; background: var(--mint); color: var(--green-dark);
  font-size: 14px; font-weight: 800;
}
h1, h2, h3 { line-height: 1.25; letter-spacing: -.035em; }
h1 { margin: 0; font-size: clamp(42px, 6vw, 76px); }
.lead { max-width: 690px; margin: 22px 0 30px; color: var(--muted); font-size: 19px; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 48px; padding: 0 20px; border: 1px solid var(--green);
  border-radius: 14px; background: var(--green); color: #fff; font-weight: 800;
}
.btn:hover { transform: translateY(-2px); background: var(--green-dark); }
.btn.secondary { background: transparent; color: var(--green); }
.hero-card {
  position: relative; min-height: 390px; padding: 34px; overflow: hidden;
  border-radius: 36px; background: var(--green); color: #fff; box-shadow: var(--shadow);
}
.hero-card::after {
  content: ""; position: absolute; width: 270px; height: 270px; right: -65px; bottom: -70px;
  border: 48px solid var(--lime); border-radius: 50%; opacity: .85;
}
.route { display: flex; justify-content: space-between; align-items: center; margin-top: 58px; }
.station { position: relative; z-index: 1; text-align: center; font-weight: 800; }
.dot { display: block; width: 18px; height: 18px; margin: 0 auto 8px; border: 4px solid #fff; border-radius: 50%; background: var(--green); }
.route-line { flex: 1; height: 4px; margin: 0 -4px 30px; background: var(--lime); }
.notice-strip { background: var(--yellow); }
.notice-inner { display: flex; gap: 14px; padding: 14px 0; font-size: 15px; }

.quick-check { padding: 0 0 74px; }
.quick-check-inner {
  position: relative; padding: 30px; border: 1px solid #b7d8ca; border-radius: 28px;
  background: #fff; box-shadow: var(--shadow);
}
.quick-check-copy { display: flex; align-items: center; gap: 14px; margin-bottom: 22px; }
.quick-check-icon {
  flex: 0 0 auto; display: grid; place-items: center; width: 42px; height: 42px;
  border-radius: 14px; background: var(--mint); color: var(--green); font-size: 20px; font-weight: 900;
}
.quick-check-copy p { margin: 0 0 2px; color: var(--green); font-size: 13px; font-weight: 900; }
.quick-check-copy h2 { margin: 0; font-size: clamp(20px, 2.5vw, 28px); }
.info-form {
  display: grid; grid-template-columns: 1.05fr .62fr 1.05fr 1.3fr auto;
  align-items: end; gap: 12px;
}
.form-field, .gender-field { min-width: 0; margin: 0; padding: 0; border: 0; }
.form-field label, .gender-field legend {
  display: block; margin: 0 0 7px 3px; color: var(--muted); font-size: 12px; font-weight: 800;
}
.form-field input, .phone-input select {
  width: 100%; height: 52px; border: 1px solid var(--line); border-radius: 13px;
  outline: 0; background: #f9fcfa; color: var(--ink); font: inherit; font-size: 15px;
}
.form-field input { padding: 0 15px; }
.form-field input::placeholder { color: #9daaa6; }
.form-field input:focus, .phone-input select:focus {
  border-color: var(--green); box-shadow: 0 0 0 3px rgba(8,122,91,.1); background: #fff;
}
.gender-options { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.gender-options input { position: absolute; opacity: 0; pointer-events: none; }
.gender-options label {
  display: grid; place-items: center; height: 52px; margin: 0; border: 1px solid var(--line);
  border-radius: 13px; background: #f9fcfa; color: var(--muted); cursor: pointer; font-weight: 800;
}
.gender-options input:checked + label { border-color: var(--green); background: var(--green); color: #fff; }
.gender-options input:focus-visible + label { outline: 3px solid rgba(8,122,91,.2); outline-offset: 2px; }
.phone-input { display: grid; grid-template-columns: 84px 1fr; gap: 7px; }
.phone-input select { padding: 0 10px; cursor: pointer; }
.quick-submit {
  min-width: 174px; height: 52px; padding: 0 19px; border: 0; border-radius: 13px;
  background: var(--green); color: #fff; font: inherit; font-weight: 900; cursor: pointer;
  box-shadow: 0 8px 20px rgba(8,122,91,.2);
}
.quick-submit span { display: block; font-size: 11px; line-height: 1; opacity: .75; }
.quick-submit b { margin-left: 5px; }
.quick-submit:hover { transform: translateY(-2px); background: var(--green-dark); }

section { padding: 74px 0; }
.section-head { max-width: 760px; margin-bottom: 32px; }
.section-head h2 { margin: 0 0 12px; font-size: clamp(30px, 4vw, 46px); }
.section-head p { margin: 0; color: var(--muted); }
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  padding: 28px; border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--white); box-shadow: 0 8px 30px rgba(22, 62, 51, .05);
}
.card .num { color: var(--green); font-weight: 900; font-size: 13px; }
.card h3 { margin: 12px 0 8px; font-size: 22px; }
.card p { margin: 0; color: var(--muted); }
.card-link:hover { border-color: var(--green); transform: translateY(-4px); }
.tag { display: inline-block; padding: 5px 10px; border-radius: 99px; background: var(--mint); color: var(--green-dark); font-size: 13px; font-weight: 800; }
.facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.fact { padding: 24px; border-radius: 20px; background: var(--ink); color: #fff; }
.fact strong { display: block; color: var(--lime); font-size: 26px; }
.soft { background: #f0f8f3; }
.compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.compare > div { padding: 32px; border-radius: var(--radius); background: #fff; border: 1px solid var(--line); }
.compare ul, .article ul { padding-left: 22px; }
.external-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.external {
  min-height: 245px; display: flex; flex-direction: column; justify-content: space-between;
  padding: 28px; border-radius: var(--radius); color: #fff;
}
.external:nth-child(1) { background: linear-gradient(145deg, #17322c, #28584d); }
.external:nth-child(2) { background: linear-gradient(145deg, #087a5b, #0b9972); }
.external:nth-child(3) { background: linear-gradient(145deg, #356b59, #4f8975); }
.external span { opacity: .78; font-size: 13px; font-weight: 800; }
.external h3 { margin: 12px 0; font-size: 25px; }
.external b { font-size: 14px; }
.external:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.faq details { border-top: 1px solid var(--line); }
.faq details:last-child { border-bottom: 1px solid var(--line); }
.faq summary { padding: 20px 4px; cursor: pointer; font-weight: 800; font-size: 18px; }
.faq details p { margin: -6px 0 22px; color: var(--muted); }

.page-hero { padding: 62px 0 40px; background: linear-gradient(135deg, #edf9f1, #fbfdf9); }
.page-hero h1 { font-size: clamp(38px, 5vw, 62px); }
.breadcrumbs { margin-bottom: 20px; color: var(--muted); font-size: 14px; }
.article { max-width: 820px; }
.article h2 { margin-top: 56px; font-size: 32px; }
.article h3 { margin-top: 34px; font-size: 23px; }
.article p, .article li { color: #435b54; }
.callout { margin: 26px 0; padding: 22px 24px; border-left: 5px solid var(--green); border-radius: 0 16px 16px 0; background: var(--mint); }
.price-list { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin: 26px 0; }
.price { padding: 18px 10px; border: 1px solid var(--line); border-radius: 16px; background: #fff; text-align: center; }
.price strong { display: block; color: var(--green); font-size: 20px; }
.source-note { color: var(--muted); font-size: 13px; }
.updated { margin-top: 18px; color: var(--muted); font-size: 14px; }

.site-footer { padding: 44px 0; border-top: 1px solid var(--line); background: #f3f8f5; }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 30px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; font-size: 14px; font-weight: 700; }
.disclaimer { max-width: 700px; color: var(--muted); font-size: 13px; }

@media (max-width: 900px) {
  .hero-grid, .compare { grid-template-columns: 1fr; }
  .hero-card { min-height: 330px; }
  .info-form { grid-template-columns: 1fr 1fr; }
  .quick-submit { width: 100%; }
  .cards, .external-grid { grid-template-columns: 1fr 1fr; }
  .facts { grid-template-columns: 1fr 1fr; }
  .nav-links { display: none; position: absolute; inset: 76px 0 auto; padding: 22px; flex-direction: column; background: var(--paper); border-bottom: 1px solid var(--line); }
  .nav-links.open { display: flex; }
  .menu-btn { display: block; }
}
@media (max-width: 600px) {
  .wrap { width: min(calc(100% - 28px), var(--max)); }
  .hero { padding-top: 48px; }
  .quick-check { padding-bottom: 54px; }
  .quick-check-inner { padding: 22px 18px; border-radius: 22px; }
  .quick-check-copy { align-items: flex-start; }
  .info-form { grid-template-columns: 1fr; }
  .gender-options { grid-template-columns: 1fr 1fr; }
  .phone-input { grid-template-columns: 90px 1fr; }
  .quick-submit { margin-top: 4px; }
  section { padding: 54px 0; }
  .cards, .external-grid, .facts { grid-template-columns: 1fr; }
  .price-list { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .notice-inner { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}