:root{
  --bg:#f5f8fc;
  --surface:#ffffff;
  --ink:#0b172a;
  --muted:#5b6f8a;
  --line:#dbe7f5;
  --primary:#1769d8;
  --primary2:#38bdf8;
  --dark:#06101f;
  --card-shadow:0 20px 50px rgba(15,35,70,.12);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans KR",Arial,sans-serif;line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
.container{width:min(1120px,92%);margin:0 auto}
.skip-link{position:absolute;left:-999px}.skip-link:focus{left:16px;top:16px;background:#fff;padding:10px 14px;z-index:9999}
.site-header{position:sticky;top:0;z-index:50;background:rgba(6,16,31,.92);backdrop-filter:blur(12px);border-bottom:1px solid rgba(255,255,255,.08)}
.header-inner{display:flex;align-items:center;justify-content:space-between;min-height:74px}
.brand{display:flex;align-items:center;gap:12px;color:#fff;font-weight:900;letter-spacing:.02em}
.logo-mark{width:42px;height:42px;border:2px solid #fff;border-radius:50%;display:grid;place-items:center}
.logo-mark:before{content:"✦";color:#fff;font-size:22px}
.nav-menu{display:flex;gap:30px;list-style:none;margin:0;padding:0;color:#fff;font-weight:700}
.nav-menu a{opacity:.9}.nav-menu a:hover{color:var(--primary2)}
.mobile-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.3);color:#fff;border-radius:10px;padding:8px 10px}
.hero{background:linear-gradient(110deg,rgba(6,16,31,.96),rgba(13,42,77,.85)),url('../images/theme-cover.jpg') center/cover no-repeat;color:#fff}
.hero-inner{min-height:620px;display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.eyebrow{color:#7dd3fc;font-weight:900;margin:0 0 12px}
.hero h1{font-size:clamp(38px,6vw,70px);line-height:1.12;margin:0 0 22px;letter-spacing:-.04em}
.hero h1 span{color:#4bd4ff}
.hero p{font-size:20px;color:#d8e7f8;margin:0 0 28px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 24px;border-radius:12px;font-weight:900;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--primary),#0ea5e9);color:#fff}
.btn-ghost{border-color:rgba(255,255,255,.45);color:#fff}
.hero-card{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);border-radius:28px;padding:26px;box-shadow:0 30px 80px rgba(0,0,0,.25)}
.code-box{background:#07101f;border:1px solid rgba(255,255,255,.12);border-radius:20px;padding:22px;color:#d7f7ff;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;overflow:hidden}
.code-box strong{color:#7dd3fc}
.section{padding:86px 0}
.section-title{text-align:center;margin:0 0 44px}
.section-title h2{font-size:clamp(30px,4vw,46px);margin:0 0 10px;letter-spacing:-.03em}
.section-title p{margin:0;color:var(--muted);font-size:18px}
.grid{display:grid;gap:24px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.card{background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:28px;box-shadow:var(--card-shadow)}
.icon{width:54px;height:54px;border-radius:18px;background:#e8f5ff;color:var(--primary);display:grid;place-items:center;font-size:26px;margin-bottom:18px}
.card h3{margin:0 0 10px;font-size:22px}.card p{margin:0;color:var(--muted)}
.service-card{padding:0;overflow:hidden}.service-thumb{height:160px;background:linear-gradient(135deg,#0b274d,#1d75d8)}.service-card .card-body{padding:24px}
.cta{background:var(--dark);color:#fff;border-radius:34px;padding:54px;display:grid;grid-template-columns:1fr auto;gap:26px;align-items:center}
.cta h2{font-size:38px;margin:0 0 10px}.cta p{margin:0;color:#c8d7ea}
.site-footer{background:#06101f;color:#c8d7ea;padding:42px 0;margin-top:70px}.footer-inner{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.post-list{display:grid;gap:18px}.post-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:22px}.post-item h2{margin:0 0 8px}
.entry{background:#fff;border:1px solid var(--line);border-radius:28px;padding:clamp(24px,5vw,54px);box-shadow:var(--card-shadow)}
.entry h1{font-size:clamp(34px,5vw,54px);line-height:1.2;margin-top:0}
@media(max-width:900px){
  .hero-inner{grid-template-columns:1fr;min-height:auto;padding:90px 0}
  .grid-4,.grid-3{grid-template-columns:1fr 1fr}
  .cta{grid-template-columns:1fr}
  .nav-menu{display:none;position:absolute;left:4%;right:4%;top:74px;background:#07101f;border:1px solid rgba(255,255,255,.12);border-radius:18px;padding:18px;flex-direction:column}
  .nav-menu.is-open{display:flex}
  .mobile-toggle{display:block}
}
@media(max-width:640px){
  .grid-4,.grid-3{grid-template-columns:1fr}
  .hero p{font-size:17px}
  .cta{padding:34px 24px}
}