/* theme: editorial | palette: 딥슬레이트 Primary #2E4155 / Accent #4A7CB0 */

:root{
  --primary:#2E4155;
  --accent:#4A7CB0;
  --ink:#1A1A1A;
  --gray:#6B7280;
  --border:#E5E5E5;
  --bg:#FFFFFF;
  --tint:#F4F6F8;
  --radius:2px;
  --serif:'Nanum Myeongjo', serif;
  --sans:'Pretendard Variable','Pretendard',-apple-system,BlinkMacSystemFont,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.7;
  word-break:keep-all;
  overflow-wrap:break-word;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{max-width:1120px;margin:0 auto;padding:0 24px}
.prose{max-width:68ch}

/* eyebrow */
.eyebrow{
  display:inline-block;
  font-family:var(--sans);
  font-size:.72rem;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--accent);
  margin-bottom:14px;
}

h1,h2,h3{font-family:var(--serif);font-weight:700;color:var(--ink);margin:0;line-height:1.35}
h1{font-size:clamp(1.9rem,4.6vw,3.1rem)}
h2{font-size:clamp(1.5rem,3.2vw,2.15rem)}
h3{font-size:1.15rem}
p{margin:0 0 1em}
.section-head{margin-bottom:40px}
.section-head p{color:var(--gray);font-size:1rem;margin-top:14px}

.hairline{border:0;border-top:1px solid var(--border);margin:0}
section{padding:72px 0}
section.tint{background:var(--tint)}

/* header */
header.site-header{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:rgba(255,255,255,.86);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:1.15rem;color:var(--ink)}
.brand svg{width:30px;height:30px}
.header-actions{display:flex;align-items:center;gap:16px}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.hamburger span{width:22px;height:2px;background:var(--ink)}
nav.mobile-nav{display:none;position:fixed;top:72px;left:0;right:0;background:#fff;border-bottom:1px solid var(--border);padding:20px 24px;flex-direction:column;gap:14px;z-index:99}
nav.mobile-nav.open{display:flex}

/* buttons */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 26px;
  background:var(--primary);color:#fff;
  border-radius:var(--radius);
  font-size:.95rem;font-weight:600;
  border:1px solid var(--primary);
  cursor:pointer;
  transition:transform .15s ease, background .15s ease;
}
.btn:hover{background:#25344530;background:#243549;transform:translateY(-1px)}
.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-sm{padding:10px 18px;font-size:.85rem}
.btn .arrow{transition:transform .15s ease}
.btn:hover .arrow{transform:translateX(3px)}

/* hero */
.hero{position:relative;color:#fff;display:flex;align-items:flex-end;min-height:78vh}
.hero-sub{min-height:52vh}
.hero img.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;z-index:0}
.hero-inner{position:relative;z-index:2;padding:64px 0 56px}
.hero h1,.hero p{text-shadow:0 2px 10px rgba(0,0,0,.55)}
.hero p.lede{font-size:1.05rem;max-width:60ch;margin-top:18px;color:#fff}
.hero-fade{position:absolute;left:0;right:0;bottom:0;height:55%;background:linear-gradient(to top, rgba(0,0,0,.42), rgba(0,0,0,0));z-index:1}
.hero-cta{display:flex;gap:14px;margin-top:28px;flex-wrap:wrap}
.hero .btn-outline{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.75)}
.hero .btn-outline:hover{background:#fff;color:var(--primary)}

/* grids - fixed column counts, no auto-fit/auto-fill */
.grid-6{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-4{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.grid-3{display:grid;grid-template-columns:1fr;gap:20px}
@media(min-width:768px){
  .grid-6{grid-template-columns:repeat(3,1fr)}
  .grid-4{grid-template-columns:repeat(4,1fr)}
  .grid-3{grid-template-columns:repeat(3,1fr)}
}

/* card */
.card{
  border:1px solid var(--border);
  border-radius:var(--radius);
  overflow:hidden;
  background:#fff;
  transition:transform .18s ease, box-shadow .18s ease;
}
.card:hover{transform:translateY(-3px)}
.card .thumb{aspect-ratio:4/3;overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.card:hover .thumb img{transform:scale(1.04)}
.card .body{padding:22px}
.card .num{font-family:var(--serif);color:var(--accent);font-size:.85rem;margin-bottom:8px;display:block}
.card h3{margin-bottom:8px}
.card p{color:var(--gray);font-size:.92rem;margin-bottom:0}
.card .cta-line{margin-top:14px;font-size:.85rem;font-weight:600;color:var(--primary)}

/* gallery single-photo */
.gallery-item{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);cursor:pointer}
.gallery-item .thumb{aspect-ratio:4/3;overflow:hidden}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}
.gallery-item:hover img{transform:scale(1.05)}
.gallery-cap{padding:12px 14px;font-size:.85rem;color:var(--gray);border-top:1px solid var(--border)}

/* lightbox */
.lightbox{display:none;position:fixed;inset:0;background:rgba(15,18,22,.92);z-index:200;align-items:center;justify-content:center;padding:24px}
.lightbox.open{display:flex}
.lightbox img{max-width:min(92vw,900px);max-height:86vh;object-fit:contain;border-radius:var(--radius)}
.lightbox-close{position:absolute;top:24px;right:28px;color:#fff;font-size:1.6rem;background:none;border:0;cursor:pointer}

/* stats / numbers */
.stat-num{font-family:var(--serif);font-size:2.2rem;color:var(--primary);font-weight:700}
.stat-label{color:var(--gray);font-size:.88rem;margin-top:6px}

/* process steps */
.steps{counter-reset:step}
.step{display:flex;gap:20px;padding:26px 0;border-top:1px solid var(--border)}
.step:last-child{border-bottom:1px solid var(--border)}
.step .step-num{font-family:var(--serif);font-size:1.6rem;color:var(--accent);min-width:52px}
.step h3{margin-bottom:6px}
.step p{color:var(--gray);margin-bottom:0;font-size:.94rem}

/* table */
table.data-table{width:100%;border-collapse:collapse;margin:20px 0}
table.data-table th,table.data-table td{border:1px solid var(--border);padding:12px 14px;text-align:left;font-size:.92rem}
table.data-table th{background:var(--tint);font-weight:700;color:var(--ink)}
table.data-table td{color:var(--gray)}

ul.plain{padding-left:1.2em;margin:0 0 1em;color:var(--gray)}
ul.plain li{margin-bottom:6px}

/* faq */
.faq-item{border-top:1px solid var(--border)}
.faq-item:last-child{border-bottom:1px solid var(--border)}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:22px 0;display:flex;justify-content:space-between;align-items:center;gap:16px;cursor:pointer;font-size:1.02rem;font-weight:700;color:var(--ink);font-family:var(--sans)}
.faq-q .plus{font-family:var(--serif);font-size:1.3rem;color:var(--accent);transition:transform .2s ease}
.faq-item.open .plus{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease}
.faq-a p{color:var(--gray);padding-bottom:22px;margin:0;font-size:.95rem}

/* cta section */
.cta-section{background:var(--primary);color:#fff;text-align:center;padding:80px 0}
.cta-section h2{color:#fff}
.cta-section p{color:rgba(255,255,255,.82);margin-top:14px}
.cta-section .btn{background:#fff;color:var(--primary);border-color:#fff;margin-top:28px}
.cta-section .btn:hover{background:var(--tint)}

/* footer */
footer.site-footer{background:#1C242E;color:#C7CDD4;padding:56px 0 28px;margin:0}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media(min-width:768px){.footer-grid{grid-template-columns:1.3fr 1fr 1fr}}
footer.site-footer h4{color:#fff;font-size:.85rem;letter-spacing:.08em;margin-bottom:16px;font-family:var(--sans)}
footer.site-footer a{color:#C7CDD4;font-size:.9rem}
footer.site-footer a:hover{color:#fff}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-bottom{border-top:1px solid #333c46;margin-top:40px;padding-top:24px;font-size:.8rem;color:#8891A0;line-height:1.9}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-brand svg{width:26px;height:26px}
.footer-brand span{font-family:var(--serif);font-weight:700;color:#fff;font-size:1.05rem}

/* floating */
.floating{position:fixed;right:20px;bottom:24px;z-index:90;display:flex;flex-direction:column;gap:10px;align-items:flex-end}
.floating .btn{box-shadow:0 8px 24px rgba(0,0,0,.18)}
.fab-top{width:46px;height:46px;border-radius:50%;background:#fff;border:1px solid var(--border);display:none;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 8px 20px rgba(0,0,0,.12)}
.fab-top.show{display:flex}

/* related grid link style already covered by .card */
.related-badge{display:inline-block;font-size:.72rem;color:var(--accent);font-weight:700;letter-spacing:.06em;margin-bottom:6px}

@media(max-width:767px){
  .header-actions .btn-sm{display:none}
  .hamburger{display:flex}
  .hero{min-height:62vh}
}