:root {
  --color-primary: #1E293B;
  --color-secondary: #334155;
  --color-accent: #DC2626;
  --color-neutral-dark: #0F172A;
  --color-neutral-light: #F8FAFC;
  --font-heading: 'Noto Serif KR', serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 16px;
  --shadow-sm: 0 2px 20px rgba(15,23,42,0.06);
  --shadow-md: 0 12px 40px -12px rgba(15,23,42,0.18);
  --shadow-lg: 0 30px 60px -20px rgba(15,23,42,0.28);
}

/* === Base === */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-neutral-dark);
  background: var(--color-neutral-light);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-heading); color: var(--color-primary); line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 1rem; font-weight: 700; }
h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.5rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }
a { color: var(--color-primary); text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--color-accent); }
img { max-width: 100%; height: auto; display: block; }
blockquote { margin: 0; }
address { font-style: normal; line-height: 1.8; }

.container { max-width: 1180px; margin-inline: auto; padding-inline: 1.25rem; }
.container.narrow { max-width: 780px; }

/* === Header / Nav === */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(248, 250, 252, 0.75);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
  transition: background .3s var(--ease), box-shadow .3s var(--ease);
}
.site-header.scrolled {
  background: rgba(248, 250, 252, 0.92);
  box-shadow: 0 4px 24px -12px rgba(15,23,42,0.12);
}
.nav-inner {
  max-width: 1180px;
  margin-inline: auto;
  padding: .75rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo img { height: 72px; width: auto; display: block; }
.nav-toggle { background: none; border: none; padding: .5rem; color: var(--color-primary); cursor: pointer; display: inline-flex; }
.primary-nav { display: none; flex-direction: column; gap: .25rem; }
.primary-nav.is-open {
  display: flex;
  position: absolute; top: 100%; left: 0; right: 0;
  background: var(--color-neutral-light);
  border-bottom: 1px solid rgba(15,23,42,0.08);
  padding: 1rem 1.25rem;
  box-shadow: var(--shadow-md);
}
.primary-nav a {
  padding: .6rem .25rem;
  font-weight: 500;
  color: var(--color-secondary);
  position: relative;
}
.primary-nav a[aria-current="page"] { color: var(--color-primary); font-weight: 700; }
.primary-nav .nav-cta {
  background: var(--color-primary);
  color: var(--color-neutral-light);
  padding: .6rem 1.1rem;
  border-radius: 999px;
  text-align: center;
  margin-top: .5rem;
}
.primary-nav .nav-cta:hover { background: var(--color-accent); color: var(--color-neutral-light); }

@media (min-width: 900px) {
  .nav-toggle { display: none; }
  .primary-nav {
    display: flex; flex-direction: row; align-items: center; gap: 2rem;
    position: static; padding: 0; box-shadow: none; background: none; border: none;
  }
  .primary-nav a { padding: .35rem 0; }
  .primary-nav a:not(.nav-cta)::after {
    content: "";
    position: absolute; left: 0; right: 0; bottom: -4px;
    height: 2px; background: var(--color-accent);
    transform: scaleX(0); transform-origin: left;
    transition: transform .25s var(--ease);
  }
  .primary-nav a:not(.nav-cta):hover::after,
  .primary-nav a[aria-current="page"]:not(.nav-cta)::after { transform: scaleX(1); }
  .primary-nav .nav-cta { margin-top: 0; }
  .logo img { height: 96px; }
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: .95rem 1.75rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: transform .2s var(--ease), box-shadow .25s var(--ease), background .25s var(--ease);
  line-height: 1.2;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-neutral-light);
  box-shadow: 0 12px 30px -10px rgba(30,41,59,0.5);
}
.btn-primary:hover { color: var(--color-neutral-light); transform: translateY(-2px); box-shadow: 0 18px 40px -10px rgba(30,41,59,0.55); }
.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), #b91c1c);
  color: var(--color-neutral-light);
  box-shadow: 0 12px 30px -10px rgba(220,38,38,0.5);
}
.btn-accent:hover { color: var(--color-neutral-light); transform: translateY(-2px); box-shadow: 0 18px 40px -10px rgba(220,38,38,0.55); }
.btn:focus-visible { outline: 3px solid var(--color-accent); outline-offset: 3px; }

/* === Hero (centered) === */
.hero {
  position: relative;
  padding-block: 4rem;
  text-align: center;
  background: linear-gradient(180deg, var(--color-neutral-light) 0%, #eef2f7 100%);
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px circle at 20% 10%, rgba(220,38,38,0.08), transparent 60%),
              radial-gradient(700px circle at 80% 30%, rgba(30,41,59,0.1), transparent 60%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: 900px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .8rem;
  font-weight: 700;
  color: var(--color-accent);
  margin: 0 0 1rem;
}
.hero h1 { max-width: 22ch; margin-inline: auto; }
.hero-sub {
  font-size: 1.15rem;
  color: var(--color-secondary);
  max-width: 52ch;
  margin: 1.25rem auto 1.75rem;
}
.hero-cta { margin-bottom: 2.5rem; }
.hero-figure {
  margin: 2.5rem auto 0;
  max-width: 1000px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.hero-figure img { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
@media (min-width: 768px) { .hero { padding-block: 6rem; } }

/* === Sections === */
.section { padding-block: 4rem; }
.section-tinted { background: #eef2f7; }
.section-head { text-align: center; max-width: 640px; margin: 0 auto 2.5rem; }
.section-head p { color: var(--color-secondary); font-size: 1.05rem; }

/* === Grids === */
.grid-2, .grid-3, .grid-4 { display: grid; gap: 1.5rem; grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .grid-2, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 960px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* === Cards === */
.card {
  background: var(--color-neutral-light);
  border-radius: var(--radius);
  padding: 1.75rem;
  border: 1px solid rgba(15,23,42,0.08);
  box-shadow: var(--shadow-sm);
  transition: transform .25s var(--ease), box-shadow .25s var(--ease);
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card-icon {
  display: inline-flex;
  align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(30,41,59,0.08), rgba(220,38,38,0.08));
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.card h3 { color: var(--color-primary); }
.card p { color: var(--color-secondary); font-size: .97rem; margin: 0; }

.team-card { text-align: left; }
.team-photo {
  aspect-ratio: 1/1;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1.25rem;
}
.team-photo img { width: 100%; height: 100%; object-fit: cover; }

/* === Testimonial === */
.testimonial {
  text-align: center;
  padding: 2.5rem 1rem;
  border-left: 3px solid var(--color-accent);
  border-right: 3px solid var(--color-accent);
  background: var(--color-neutral-light);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.testimonial p {
  font-family: var(--font-heading);
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  color: var(--color-primary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
}
.testimonial cite {
  font-style: normal;
  color: var(--color-secondary);
  font-size: .95rem;
  font-weight: 500;
}

/* === CTA band === */
.cta-band {
  background: linear-gradient(135deg, var(--color-primary), var(--color-neutral-dark));
  color: var(--color-neutral-light);
  padding-block: 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px circle at 30% 50%, rgba(220,38,38,0.18), transparent 60%);
  pointer-events: none;
}
.cta-band h2 { color: var(--color-neutral-light); position: relative; }
.cta-band p { color: rgba(248,250,252,0.85); position: relative; }
.cta-band p:last-child { margin-top: 1.75rem; }

/* === FAQ === */
.faq details {
  background: var(--color-neutral-light);
  border: 1px solid rgba(15,23,42,0.08);
  border-radius: 12px;
  padding: 1.1rem 1.25rem;
  margin-bottom: .75rem;
  transition: box-shadow .2s var(--ease);
}
.faq details[open] { box-shadow: var(--shadow-sm); }
.faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--color-primary);
  list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--color-accent);
  font-size: 1.5rem; line-height: 1;
  transition: transform .2s var(--ease);
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details p { margin: 1rem 0 0; color: var(--color-secondary); }

/* === Contact card & form === */
.contact-card {
  background: var(--color-neutral-light);
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid rgba(15,23,42,0.08);
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.contact-card p { color: var(--color-secondary); line-height: 1.9; }

.contact-form {
  background: var(--color-neutral-light);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(15,23,42,0.08);
}
.field { margin-bottom: 1.25rem; }
.field label { display: block; font-weight: 600; margin-bottom: .4rem; color: var(--color-primary); font-size: .95rem; }
.field input, .field textarea {
  width: 100%;
  padding: .75rem .9rem;
  border: 1px solid rgba(15,23,42,0.15);
  border-radius: 10px;
  font-family: inherit;
  font-size: 1rem;
  background: #fff;
  color: var(--color-neutral-dark);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(220,38,38,0.15);
}
.form-consent {
  display: flex; gap: .6rem; align-items: flex-start;
  font-size: .88rem; color: var(--color-secondary);
  margin: 1.25rem 0 1.5rem;
  line-height: 1.5;
}
.form-consent input { margin-top: .25rem; flex-shrink: 0; }
.form-consent a { color: var(--color-primary); text-decoration: underline; }

/* === Footer === */
.site-footer {
  background: var(--color-neutral-dark);
  color: rgba(248,250,252,0.75);
  padding-block: 3.5rem 1.5rem;
  margin-top: 2rem;
}
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 2.5rem; margin-bottom: 2rem; }
.site-footer .logo img { height: 72px; }
.footer-tag { color: rgba(248,250,252,0.65); margin-top: 1rem; font-size: .95rem; }
.footer-nav, .footer-contact { display: flex; flex-direction: column; gap: .5rem; }
.footer-nav h3, .footer-contact h3 {
  color: var(--color-neutral-light);
  font-family: var(--font-body);
  font-size: .9rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  margin-bottom: .75rem;
}
.footer-nav a, .footer-contact a { color: rgba(248,250,252,0.75); font-size: .95rem; }
.footer-nav a:hover, .footer-contact a:hover { color: var(--color-accent); }
.legal-nav { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.25rem; font-size: .85rem; }
.copyright {
  border-top: 1px solid rgba(248,250,252,0.1);
  padding-top: 1.5rem;
  text-align: center;
  font-size: .85rem;
  color: rgba(248,250,252,0.55);
}
.copyright p { margin: 0; }
@media (min-width: 768px) { .footer-grid { grid-template-columns: 1.3fr 1fr 1.3fr; gap: 3rem; } }

/* === 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: var(--shadow-lg);
  max-width: 640px;
  margin-inline: auto;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p { margin: 0 0 1rem; font-size: .92rem; line-height: 1.6; color: rgba(248,250,252,0.9); }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: .6rem; }
.cookie-banner__actions button {
  padding: .55rem 1.1rem;
  border: 1px solid rgba(248,250,252,0.25);
  background: transparent;
  color: var(--color-neutral-light);
  border-radius: 999px;
  font-family: inherit;
  font-size: .9rem;
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}
.cookie-banner__actions button:hover { border-color: var(--color-accent); }
.cookie-banner__actions button[data-cookie-accept] {
  background: var(--color-accent);
  border-color: var(--color-accent);
}
.cookie-banner__actions button[data-cookie-accept]:hover { background: #b91c1c; border-color: #b91c1c; }
.cookie-banner__prefs { margin-top: 1rem; display: flex; flex-direction: column; gap: .5rem; }
.cookie-banner__prefs label { display: flex; gap: .5rem; font-size: .9rem; align-items: center; }
.cookie-banner__prefs button {
  align-self: flex-start;
  margin-top: .5rem;
  padding: .5rem 1rem;
  border: 1px solid rgba(248,250,252,0.25);
  background: transparent;
  color: var(--color-neutral-light);
  border-radius: 999px;
  cursor: pointer;
  font-family: inherit;
  font-size: .85rem;
}

/* === Reveal === */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); will-change: opacity, transform; }
.reveal.is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; transition: none; } }