:root{
  --color-primary:#475569;
  --color-secondary:#64748B;
  --color-accent:#2563EB;
  --color-neutral-dark:#1E293B;
  --color-neutral-light:#F8FAFC;
  --font-heading:'Nanum Myeongjo',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,.06);
  --shadow-lg:0 20px 60px -20px rgba(15,23,42,.25);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font-body);font-size:16px;line-height:1.65;color:var(--color-neutral-dark);background:var(--color-neutral-light);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto}
a{color:var(--color-accent);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--font-heading);color:var(--color-neutral-dark);line-height:1.2;margin:0 0 .75rem;letter-spacing:-.01em}
h1{font-size:clamp(2.25rem,5vw,3.75rem);font-weight:800}
h2{font-size:clamp(1.6rem,3vw,2.25rem);font-weight:700}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1rem}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 1.25rem}
.narrow{max-width:760px}

/* === Header === */
.site-header{position:sticky;top:0;z-index:100;background:rgba(248,250,252,.72);backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);border-bottom:1px solid rgba(30,41,59,.06);transition:background .2s var(--ease),box-shadow .2s var(--ease)}
.site-header.scrolled{background:rgba(248,250,252,.92);box-shadow:0 4px 20px rgba(15,23,42,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:.75rem 1.25rem}
.logo{display:inline-flex;align-items:center}
.logo img{height:72px;width:auto}
.primary-nav{display:none;gap:1.75rem;align-items:center}
.primary-nav a{color:var(--color-neutral-dark);font-weight:500;font-size:.95rem;position:relative;padding:.25rem 0}
.primary-nav a::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:100%;background:var(--color-accent);transform:scaleX(0);transform-origin:left;transition:transform .25s var(--ease)}
.primary-nav a:hover{text-decoration:none}
.primary-nav a:hover::after,.primary-nav a[aria-current="page"]::after{transform:scaleX(1)}
.primary-nav .nav-cta{background:var(--color-accent);color:#fff;padding:.55rem 1.1rem;border-radius:999px}
.primary-nav .nav-cta::after{display:none}
.primary-nav .nav-cta:hover{background:#1d4ed8}
.nav-toggle{display:inline-flex;flex-direction:column;justify-content:center;gap:5px;width:40px;height:40px;background:transparent;border:1px solid rgba(30,41,59,.15);border-radius:8px;cursor:pointer;padding:0 8px}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--color-neutral-dark);border-radius:2px}
@media (min-width:900px){
  .nav-toggle{display:none}
  .primary-nav{display:flex;position:static;flex-direction:row}
  .logo img{height:96px}
}
.primary-nav.is-open{display:flex;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:var(--color-neutral-light);padding:1rem 1.25rem;border-bottom:1px solid rgba(30,41,59,.08);box-shadow:var(--shadow-sm);gap:.5rem}
.primary-nav.is-open a{padding:.65rem 0}

/* === Hero split === */
.hero{position:relative;overflow:hidden;padding-block:3rem 4rem;background:linear-gradient(135deg,rgba(37,99,235,.06),rgba(71,85,105,.04))}
.hero::before{content:"";position:absolute;top:-120px;right:-120px;width:420px;height:420px;background:radial-gradient(circle,rgba(37,99,235,.18),transparent 65%);z-index:0}
.hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1fr;gap:2.5rem;align-items:center}
.hero-grid.single{grid-template-columns:1fr;text-align:center}
@media (min-width:900px){
  .hero{padding-block:5rem 6rem}
  .hero-grid{grid-template-columns:1fr 1fr;gap:4rem}
  .hero-grid.single{grid-template-columns:1fr;max-width:820px;margin:0 auto}
}
.eyebrow{font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:.14em;color:var(--color-accent);margin-bottom:1rem}
.lede{font-size:1.15rem;color:var(--color-secondary);max-width:52ch;margin-bottom:1.75rem}
.cta-row{display:flex;gap:.9rem;flex-wrap:wrap}
.hero-visual img{aspect-ratio:4/5;object-fit:cover;border-radius:20px;box-shadow:var(--shadow-lg)}
@media (max-width:899px){.hero-visual img{aspect-ratio:16/10}}

/* === Buttons === */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.85rem 1.5rem;border-radius:999px;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease);text-decoration:none;line-height:1}
.btn:hover{text-decoration:none;transform:translateY(-2px);box-shadow:0 12px 30px -12px rgba(37,99,235,.5)}
.btn:focus-visible{outline:2px solid var(--color-accent);outline-offset:3px}
.btn-primary{background:linear-gradient(135deg,var(--color-accent),#1d4ed8);color:#fff}
.btn-accent{background:var(--color-accent);color:#fff}
.btn-accent:hover{background:#1d4ed8}
.btn-ghost{background:transparent;color:var(--color-neutral-dark);border:1px solid rgba(30,41,59,.2)}
.btn-ghost:hover{background:rgba(30,41,59,.05);box-shadow:none}

/* === Sections === */
.section{padding-block:3.5rem}
@media (min-width:900px){.section{padding-block:5rem}}
.section h2{text-align:center;margin-bottom:2rem}
.intro p{color:var(--color-secondary);font-size:1.05rem;text-align:justify}

/* === Grids/cards === */
.grid-3,.grid-4{display:grid;grid-template-columns:1fr;gap:1.25rem}
@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:#fff;padding:1.75rem;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid rgba(30,41,59,.05);transition:transform .25s var(--ease),box-shadow .25s var(--ease)}
.card:hover{transform:translateY(-4px);box-shadow:0 20px 40px -20px rgba(15,23,42,.18)}
.card .icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:12px;background:rgba(37,99,235,.1);color:var(--color-accent);margin-bottom:1rem}
.card h3{margin-bottom:.5rem}
.card p{color:var(--color-secondary);margin:0;font-size:.98rem}

/* === Testimonial === */
.testimonial-section{background:linear-gradient(180deg,transparent,rgba(37,99,235,.04))}
.testimonial{margin:0;text-align:center;font-family:var(--font-heading);position:relative;padding:1rem 0}
.testimonial p{font-size:1.35rem;line-height:1.7;color:var(--color-neutral-dark);margin-bottom:1.25rem}
.testimonial cite{font-style:normal;color:var(--color-secondary);font-family:var(--font-body);font-size:.95rem;font-weight:500}

/* === CTA band === */
.cta-band{background:linear-gradient(135deg,var(--color-primary),var(--color-neutral-dark));color:#fff;padding-block:3.5rem;text-align:center}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(248,250,252,.85);max-width:60ch;margin:0 auto 1.5rem}

/* === FAQ === */
.faq details{background:#fff;border:1px solid rgba(30,41,59,.08);border-radius:12px;padding:1rem 1.25rem;margin-bottom:.75rem;box-shadow:var(--shadow-sm)}
.faq summary{cursor:pointer;font-weight:600;font-size:1.05rem;list-style:none;color:var(--color-neutral-dark)}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--color-accent);font-size:1.35rem;line-height:1;transition:transform .2s}
.faq details[open] summary::after{content:"−"}
.faq details p{margin-top:.75rem;color:var(--color-secondary)}

/* === Contact/form === */
.contact-band p{text-align:center;color:var(--color-secondary)}
.contact-form{background:#fff;padding:2rem;border-radius:var(--radius);box-shadow:var(--shadow-sm);border:1px solid rgba(30,41,59,.06)}
.field{margin-bottom:1.15rem}
.field label{display:block;font-weight:600;margin-bottom:.4rem;font-size:.95rem}
.field input,.field textarea{width:100%;padding:.75rem .9rem;border:1px solid rgba(30,41,59,.15);border-radius:10px;font-family:inherit;font-size:1rem;background:var(--color-neutral-light);transition:border-color .15s,box-shadow .15s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--color-accent);box-shadow:0 0 0 3px rgba(37,99,235,.15)}
.field textarea{resize:vertical;min-height:130px}
.form-consent{display:flex;gap:.6rem;align-items:flex-start;font-size:.9rem;color:var(--color-secondary);margin:1rem 0 1.5rem;flex-wrap:wrap}
.form-consent input{margin-top:.25rem;flex-shrink:0}
.form-consent span{flex:1;min-width:220px}

/* === Footer === */
.site-footer{background:var(--color-neutral-dark);color:rgba(248,250,252,.85);padding-block:3rem 1.5rem;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:1fr;gap:2rem;padding-bottom:2rem;border-bottom:1px solid rgba(248,250,252,.08)}
@media (min-width:768px){.footer-grid{grid-template-columns:1.2fr 1fr 1.3fr}}
.footer-logo img{height:60px;width:auto;filter:brightness(0) invert(1)}
.site-footer h4{color:#fff;font-family:var(--font-body);font-size:1rem;margin-bottom:1rem}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:.4rem}
.site-footer a{color:rgba(248,250,252,.85)}
.site-footer a:hover{color:#fff}
.site-footer address{font-style:normal;line-height:1.7;font-size:.95rem;margin-bottom:1rem}
.tagline{color:rgba(248,250,252,.7);margin-top:.75rem;font-size:.95rem}
.legal-links{display:flex;flex-wrap:wrap;gap:.75rem;font-size:.85rem}
.legal-links li{margin:0}
.copyright{padding-top:1.5rem;text-align:center;color:rgba(248,250,252,.6);font-size:.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 1.4rem;border-radius:14px;box-shadow:0 20px 50px rgba(0,0,0,.35);max-width:520px}
.cookie-banner.is-visible{display:block}
.cookie-banner p{margin:0 0 .9rem;font-size:.92rem;line-height:1.55}
.cookie-banner__actions{display:flex;gap:.5rem;flex-wrap:wrap}
.cookie-banner__actions button,.cookie-banner__prefs button{padding:.55rem 1rem;border-radius:8px;border:none;font-weight:600;cursor:pointer;font-size:.9rem;font-family:inherit}
.cookie-banner__actions button[data-cookie-accept]{background:var(--color-accent);color:#fff}
.cookie-banner__actions button[data-cookie-reject]{background:rgba(248,250,252,.12);color:var(--color-neutral-light)}
.cookie-banner__actions button[data-cookie-settings]{background:transparent;color:var(--color-neutral-light);text-decoration:underline}
.cookie-banner__prefs{margin-top:1rem;display:flex;flex-direction:column;gap:.55rem;font-size:.9rem}
.cookie-banner__prefs label{display:flex;gap:.5rem;align-items:center}
.cookie-banner__prefs button[data-cookie-save]{background:var(--color-accent);color:#fff;align-self:flex-start;margin-top:.35rem}

/* === Reveal animations === */
.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}
  html{scroll-behavior:auto}
}