:root {
  --color-primary: #2563EB;
  --color-secondary: #3B82F6;
  --color-accent: #F97316;
  --color-neutral-dark: #1E40AF;
  --color-neutral-light: #EFF6FF;
  --color-ink: #0F172A;
  --color-muted: #475569;
  --font-heading: 'Noto Serif KR', serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --radius: 12px;
  --shadow-sm: 0 2px 8px rgba(30,64,175,0.06);
  --shadow-md: 0 20px 40px -20px rgba(30,64,175,0.25);
}

/* === Reset & base === */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-ink);
  background: #fff;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--color-neutral-dark); font-weight: 600; line-height: 1.25; margin: 0 0 1rem; letter-spacing: -0.01em; }
h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.25rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }

/* === Layout === */
.container { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: 1.25rem; }
.container.narrow { max-width: 760px; }
.center { text-align: center; }
.section { padding-block: 3.5rem; }
.section-head { text-align: center; margin-bottom: 2.5rem; }
.section-sub { color: var(--color-muted); max-width: 56ch; margin-inline: auto; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.16em; font-size: 0.78rem; color: var(--color-primary); font-weight: 700; margin-bottom: 1rem; }

/* === Header === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(30,64,175,0.08);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; padding-block: 0.75rem; gap: 1rem; }
.logo img { height: 72px; width: auto; display: block; }
.nav-toggle { background: none; border: 0; color: var(--color-neutral-dark); cursor: pointer; padding: 0.5rem; }
.primary-nav { display: none; }
.primary-nav.is-open { display: flex; flex-direction: column; gap: 0.25rem; position: absolute; top: 100%; left: 0; right: 0; background: #fff; padding: 1rem 1.25rem 1.5rem; border-bottom: 1px solid rgba(30,64,175,0.08); box-shadow: var(--shadow-md); }
.primary-nav a { color: var(--color-ink); padding: 0.6rem 0; font-weight: 500; }
.primary-nav a[aria-current="page"] { color: var(--color-primary); }

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.9rem 1.6rem;
  border-radius: 999px;
  font-weight: 600;
  font-family: var(--font-body);
  border: 0;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-decoration: none;
  font-size: 1rem;
}
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: var(--shadow-md); }
.btn-primary:hover { background: var(--color-neutral-dark); text-decoration: none; transform: translateY(-1px); }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: #EA580C; text-decoration: none; transform: translateY(-1px); }

/* === Hero (centered) === */
.hero { padding-block: 3.5rem 2.5rem; text-align: center; background: linear-gradient(180deg, var(--color-neutral-light), #fff); }
.hero h1 { max-width: 22ch; margin-inline: auto; }
.hero .hero-sub { max-width: 52ch; margin: 0 auto 2rem; color: var(--color-muted); font-size: 1.1rem; }
.hero-image { margin: 3rem auto 0; max-width: 960px; border-radius: 20px; overflow: hidden; box-shadow: var(--shadow-md); }
.hero-image img { aspect-ratio: 16/9; object-fit: cover; width: 100%; }

/* === Intro === */
.section-intro p { color: var(--color-ink); font-size: 1.05rem; }
.split { display: grid; gap: 2.5rem; }
.split-image img { border-radius: var(--radius); aspect-ratio: 4/3; object-fit: cover; box-shadow: var(--shadow-sm); }

/* === Highlights grid === */
.grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
.card {
  background: #fff;
  border: 1px solid rgba(30,64,175,0.10);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card-icon {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 44px; height: 44px;
  background: var(--color-neutral-light);
  color: var(--color-primary);
  border-radius: 10px;
  margin-bottom: 1rem;
}
.card h3 { color: var(--color-neutral-dark); }
.card p { color: var(--color-muted); margin: 0; font-size: 0.98rem; }

/* === Testimonial === */
.section-quote blockquote {
  margin: 0; padding: 2rem 1rem;
  text-align: center;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--color-neutral-dark);
  line-height: 1.55;
}
.section-quote blockquote p { margin-bottom: 1.25rem; }
.section-quote cite { font-family: var(--font-body); font-size: 0.95rem; color: var(--color-muted); font-style: normal; }

/* === CTA band === */
.cta-band { background: linear-gradient(135deg, var(--color-primary), var(--color-neutral-dark)); color: #fff; padding-block: 3.5rem; }
.cta-band h2 { color: #fff; }
.cta-band p { color: rgba(255,255,255,0.9); max-width: 56ch; margin: 0 auto 1.75rem; }

/* === FAQ === */
.section-faq details {
  border-bottom: 1px solid rgba(30,64,175,0.12);
  padding: 1rem 0;
}
.section-faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--color-neutral-dark);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  list-style: none;
  padding-right: 2rem;
  position: relative;
}
.section-faq summary::-webkit-details-marker { display: none; }
.section-faq summary::after { content: "+"; position: absolute; right: 0; top: 0; font-size: 1.25rem; color: var(--color-primary); }
.section-faq details[open] summary::after { content: "−"; }
.section-faq details p { margin-top: 0.75rem; color: var(--color-muted); }

/* === Contact / form === */
.section-contact p { color: var(--color-muted); }
.contact-form { display: flex; flex-direction: column; gap: 1rem; margin-top: 1.5rem; }
.form-row { display: flex; flex-direction: column; gap: 0.4rem; }
.form-row label { font-weight: 500; color: var(--color-neutral-dark); font-size: 0.95rem; }
.form-row input, .form-row textarea {
  padding: 0.75rem 0.9rem;
  border: 1px solid rgba(30,64,175,0.20);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 1rem;
  background: #fff;
  color: var(--color-ink);
}
.form-row input:focus, .form-row textarea:focus { outline: 2px solid var(--color-primary); outline-offset: 1px; border-color: var(--color-primary); }
.form-consent { display: flex; gap: 0.6rem; align-items: flex-start; font-size: 0.9rem; color: var(--color-muted); }
.form-consent input { margin-top: 0.25rem; }
.contact-form .btn { align-self: flex-start; margin-top: 0.5rem; }

/* === Footer === */
.site-footer { background: var(--color-neutral-light); padding-block: 3rem 1.5rem; margin-top: 3rem; border-top: 1px solid rgba(30,64,175,0.08); }
.footer-grid { display: grid; gap: 2rem; grid-template-columns: 1fr; }
.footer-grid h4 { color: var(--color-neutral-dark); font-size: 1rem; margin-bottom: 0.75rem; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid ul li { margin-bottom: 0.4rem; }
.footer-grid a { color: var(--color-ink); }
.footer-tag { color: var(--color-muted); margin-top: 0.5rem; font-size: 0.95rem; }
.footer-grid address { font-style: normal; color: var(--color-muted); font-size: 0.95rem; line-height: 1.7; }
.legal-links { margin-top: 1rem !important; display: flex; flex-wrap: wrap; gap: 0.75rem 1rem; font-size: 0.88rem; }
.legal-links li { margin: 0 !important; }
.copyright { padding-top: 1.5rem; margin-top: 2rem; border-top: 1px solid rgba(30,64,175,0.08); color: var(--color-muted); font-size: 0.85rem; }

/* === Cookie banner === */
.cookie-banner {
  position: fixed; left: 1rem; right: 1rem; bottom: 1rem;
  display: none; z-index: 9999;
  background: var(--color-neutral-dark); color: var(--color-neutral-light);
  padding: 1.25rem 1.5rem; border-radius: 14px;
  box-shadow: 0 20px 50px -10px rgba(0,0,0,0.35);
  max-width: 720px; margin-inline: auto;
  font-size: 0.92rem;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p { margin: 0 0 0.9rem; color: var(--color-neutral-light); }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.cookie-banner__actions button {
  padding: 0.55rem 1rem; border-radius: 999px; border: 0; cursor: pointer;
  font-family: var(--font-body); font-weight: 600; font-size: 0.9rem;
  background: rgba(255,255,255,0.14); color: var(--color-neutral-light);
}
.cookie-banner__actions button[data-cookie-accept] { background: var(--color-accent); color: #fff; }
.cookie-banner__prefs { margin-top: 1rem; display: flex; flex-direction: column; gap: 0.5rem; }
.cookie-banner__prefs label { display: flex; align-items: center; gap: 0.5rem; font-size: 0.9rem; }
.cookie-banner__prefs button {
  align-self: flex-start; margin-top: 0.5rem;
  padding: 0.55rem 1rem; border-radius: 999px; border: 0; cursor: pointer;
  background: var(--color-accent); color: #fff; font-weight: 600;
}

/* === Responsive === */
@media (min-width: 640px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 768px) {
  .section { padding-block: 5rem; }
  .hero { padding-block: 6rem 4rem; }
  .logo img { height: 96px; }
  .nav-toggle { display: none; }
  .primary-nav {
    display: flex; flex-direction: row; gap: 1.5rem;
    position: static; background: transparent; padding: 0; box-shadow: none; border: 0;
  }
  .primary-nav a { padding: 0; font-size: 0.98rem; }
  .footer-grid { grid-template-columns: 1.2fr 1fr 1.4fr; gap: 3rem; }
  .split { grid-template-columns: 1fr 1fr; align-items: center; }
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .section-quote blockquote { font-size: 1.5rem; padding: 3rem 2rem; }
}
@media (min-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
  .hero h1 { font-size: 3.5rem; }
}