:root {
  --color-primary: #0F172A;
  --color-secondary: #334155;
  --color-accent: #0369A1;
  --color-neutral-dark: #020617;
  --color-neutral-light: #F8FAFC;
  --color-border: rgba(2, 6, 23, 0.08);
  --color-card: #ffffff;
  --font-heading: 'Noto Serif KR', serif;
  --font-body: 'Noto Sans KR', sans-serif;
  --radius: 16px;
  --radius-lg: 24px;
  --shadow-card: 0 10px 30px -18px rgba(2, 6, 23, 0.35);
}

/* === Base === */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-primary);
  background: var(--color-neutral-light);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--font-heading); color: var(--color-primary); line-height: 1.25; font-weight: 600; letter-spacing: -0.01em; }
h1 { font-size: clamp(2rem, 4.5vw, 3.25rem); margin: 0 0 1rem; }
h2 { font-size: clamp(1.5rem, 2.8vw, 2.125rem); margin: 0 0 1rem; }
h3 { font-size: 1.15rem; margin: 0 0 .5rem; }
p { margin: 0 0 1rem; color: var(--color-secondary); }
a { color: var(--color-accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

.container { width: 100%; max-width: 1160px; margin-inline: auto; padding-inline: 1.25rem; }
.container--narrow { max-width: 780px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .78rem; font-weight: 700; color: var(--color-accent); margin: 0 0 1rem; }

/* === Header === */
.site-header { background: var(--color-neutral-light); border-bottom: 1px solid var(--color-border); position: sticky; top: 0; z-index: 100; }
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.25rem; max-width: 1160px; margin-inline: auto; }
.logo img { height: 72px; width: auto; display: block; }
.nav-toggle { background: none; border: 0; padding: .5rem; cursor: pointer; display: inline-flex; flex-direction: column; gap: 5px; }
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-primary); }
.site-nav { display: none; }
.site-nav.is-open { display: flex; }
.site-nav a { display: block; padding: .5rem 0; color: var(--color-primary); font-weight: 500; }
.site-nav a[aria-current="page"] { color: var(--color-accent); }

@media (min-width: 768px) {
  .logo img { height: 96px; }
  .nav-toggle { display: none; }
  .site-nav { display: flex !important; gap: 1.75rem; }
  .site-nav a { padding: 0; }
}
@media (max-width: 767px) {
  .site-nav { flex-direction: column; width: 100%; padding-top: .5rem; }
  .site-header__inner { flex-wrap: wrap; }
}

/* === Hero card === */
.hero { background: linear-gradient(160deg, #E2E8F0 0%, #F8FAFC 60%); padding: 3rem 1rem; }
.hero-card__inner {
  max-width: 880px; margin-inline: auto;
  background: var(--color-card);
  padding: 2.5rem 1.5rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 60px -30px rgba(2, 6, 23, 0.25);
  border: 1px solid var(--color-border);
  text-align: left;
}
.hero__sub { font-size: 1.1rem; color: var(--color-secondary); max-width: 56ch; margin-bottom: 1.75rem; }
.hero__cta { margin: 0 0 2rem; }
.hero-card__figure { margin: 1.5rem 0 0; border-radius: var(--radius); overflow: hidden; aspect-ratio: 16 / 9; }
.hero-card__figure img { width: 100%; height: 100%; object-fit: cover; }

@media (min-width: 768px) {
  .hero { padding: 5rem 1.25rem; }
  .hero-card__inner { padding: 4rem; }
}

/* === Buttons === */
.btn { display: inline-block; padding: .85rem 1.6rem; border-radius: 999px; font-weight: 600; font-family: var(--font-body); border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, box-shadow .15s ease; }
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn--primary { background: var(--color-primary); color: var(--color-neutral-light); }
.btn--primary:hover { background: var(--color-neutral-dark); color: #fff; }
.btn--accent { background: var(--color-accent); color: #fff; }
.btn--accent:hover { background: #075985; }

/* === Sections === */
.section { padding: 3.5rem 0; }
@media (min-width: 768px) { .section { padding: 5rem 0; } }
.section__head { text-align: center; max-width: 640px; margin: 0 auto 2.5rem; }
.section__head p { color: var(--color-secondary); }

/* === Grid + cards === */
.grid { display: grid; gap: 1.25rem; grid-template-columns: 1fr; }
@media (min-width: 640px) { .grid--3, .grid--4 { 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); }
}
.card { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.75rem 1.5rem; box-shadow: var(--shadow-card); }
.card .icon { color: var(--color-accent); margin-bottom: .75rem; }
.card h3 { color: var(--color-primary); }
.card p { margin: 0; font-size: .96rem; }

/* === Prose === */
.prose { background: var(--color-neutral-light); }
.prose h2 { text-align: left; }
.prose p { color: var(--color-secondary); font-size: 1.05rem; }
.prose--with-media .prose__figure { aspect-ratio: 16 / 9; border-radius: var(--radius); overflow: hidden; margin: 0 0 2rem; }
.prose--with-media .prose__figure img { width: 100%; height: 100%; object-fit: cover; }

/* === Testimonial === */
.testimonial { background: var(--color-neutral-light); }
.testimonial blockquote { margin: 0; padding: 2.5rem 1.5rem; text-align: center; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); }
.testimonial p { font-family: var(--font-heading); font-size: 1.35rem; color: var(--color-primary); line-height: 1.55; margin-bottom: 1rem; }
.testimonial cite { font-style: normal; color: var(--color-secondary); font-size: .95rem; }

/* === CTA band === */
.cta-band { background: var(--color-primary); color: var(--color-neutral-light); padding: 3.5rem 0; text-align: center; }
.cta-band h2 { color: var(--color-neutral-light); }
.cta-band p { color: rgba(248, 250, 252, 0.85); }

/* === Contact band === */
.contact-band__sub { color: var(--color-secondary); margin-bottom: 2rem; }
.contact-band__grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
@media (min-width: 640px) { .contact-band__grid { grid-template-columns: repeat(2, 1fr); } }
.contact-band__grid h3 { color: var(--color-primary); margin-bottom: .25rem; }
.contact-band__grid address { font-style: normal; color: var(--color-secondary); }

/* === FAQ === */
.faq details { border-top: 1px solid var(--color-border); padding: 1.25rem 0; }
.faq details:last-of-type { border-bottom: 1px solid var(--color-border); }
.faq summary { font-family: var(--font-heading); font-size: 1.1rem; font-weight: 600; color: var(--color-primary); cursor: pointer; list-style: none; position: relative; padding-right: 2rem; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: '+'; position: absolute; right: 0; top: 0; font-size: 1.5rem; color: var(--color-accent); }
.faq details[open] summary::after { content: '−'; }
.faq details p { margin: 1rem 0 0; color: var(--color-secondary); }

/* === Form === */
.contact-form { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 1.75rem; box-shadow: var(--shadow-card); }
.form-row { margin-bottom: 1.1rem; display: flex; flex-direction: column; gap: .35rem; }
.form-row label { font-weight: 600; color: var(--color-primary); font-size: .95rem; }
.form-row input, .form-row select, .form-row textarea {
  font-family: var(--font-body); font-size: 1rem; padding: .75rem .9rem;
  border: 1px solid var(--color-border); border-radius: 10px;
  background: var(--color-neutral-light); color: var(--color-primary);
}
.form-row textarea { resize: vertical; min-height: 130px; }
.form-row input:focus, .form-row select:focus, .form-row textarea:focus { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.form-consent { display: flex; align-items: flex-start; gap: .6rem; font-size: .92rem; color: var(--color-secondary); margin: 1rem 0 1.5rem; }
.form-consent input { margin-top: 4px; }

/* === Footer === */
.site-footer { background: var(--color-neutral-dark); color: rgba(248, 250, 252, 0.8); padding: 3rem 0 2rem; margin-top: 2rem; }
.site-footer__grid { display: grid; grid-template-columns: 1fr; gap: 2rem; }
@media (min-width: 768px) { .site-footer__grid { grid-template-columns: 1.2fr 1fr 1.4fr; } }
.site-footer h3 { color: var(--color-neutral-light); font-size: 1rem; margin-bottom: .75rem; }
.site-footer a { color: rgba(248, 250, 252, 0.85); }
.site-footer a:hover { color: #fff; }
.site-footer p { color: rgba(248, 250, 252, 0.7); }
.site-footer address { font-style: normal; color: rgba(248, 250, 252, 0.75); margin-bottom: .75rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; }
.site-footer ul li { margin-bottom: .35rem; }
.legal-links { margin-top: .75rem; }
.logo--footer img { height: 60px; margin-bottom: .75rem; filter: brightness(0) invert(1); }
.copyright { text-align: center; margin: 2rem 0 0; font-size: .85rem; color: rgba(248, 250, 252, 0.55); }

/* === 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; border-radius: var(--radius); box-shadow: 0 20px 50px -15px rgba(0,0,0,0.5);
  max-width: 640px; margin-inline: auto;
}
.cookie-banner.is-visible { display: block; }
.cookie-banner p { color: rgba(248, 250, 252, 0.9); margin: 0 0 1rem; font-size: .95rem; }
.cookie-banner__actions { display: flex; flex-wrap: wrap; gap: .5rem; }
.cookie-banner__actions button { padding: .55rem 1rem; border-radius: 999px; border: 1px solid rgba(248,250,252,0.25); background: transparent; color: var(--color-neutral-light); font-family: var(--font-body); font-size: .9rem; font-weight: 600; cursor: pointer; }
.cookie-banner__actions button[data-cookie-accept] { background: var(--color-accent); border-color: var(--color-accent); }
.cookie-banner__prefs { margin-top: 1rem; display: flex; flex-direction: column; gap: .5rem; padding-top: 1rem; border-top: 1px solid rgba(248,250,252,0.15); }
.cookie-banner__prefs label { font-size: .9rem; display: flex; align-items: center; gap: .5rem; }
.cookie-banner__prefs button { align-self: flex-start; margin-top: .5rem; padding: .5rem 1rem; border-radius: 999px; border: 0; background: var(--color-neutral-light); color: var(--color-primary); font-weight: 600; cursor: pointer; }