:root{
  --bg:#0a1428;
  --bg-2:#0f1b35;
  --card:rgba(79,195,247,.06);
  --card-hover:rgba(79,195,247,.10);
  --border:rgba(79,195,247,.20);
  --border-strong:rgba(79,195,247,.45);
  --primary:#29B6F6;
  --primary-dark:#0288D1;
  --primary-glow:rgba(41,182,246,.45);
  --accent:#4FC3F7;
  --accent-bright:#81D4FA;
  --accent-soft:rgba(79,195,247,.18);
  --secondary:#B3E5FC;
  --text:#F5F9FF;
  --text-dim:#CFE2F3;
  --muted:#7A8BAE;
  --ice:#E1F5FE;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans KR","Apple SD Gothic Neo",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.75;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  background-image:
    radial-gradient(ellipse at top left, rgba(41,182,246,.14) 0%, transparent 55%),
    radial-gradient(ellipse at top right, rgba(79,195,247,.10) 0%, transparent 55%),
    radial-gradient(ellipse at bottom, rgba(225,245,254,.05) 0%, transparent 60%);
  background-attachment:fixed;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
code{font-family:"SF Mono",Menlo,Consolas,monospace;background:rgba(79,195,247,.12);padding:2px 7px;border-radius:4px;font-size:.92em;color:var(--accent)}

/* ========== 상단 Nav (sticky) ========== */
.site-nav{
  position:sticky;top:0;z-index:100;
  background:rgba(10,20,40,.88);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
  box-shadow:0 2px 20px rgba(0,0,0,.4);
}
.site-nav-inner{
  max-width:1180px;margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:16px 24px;
}
.site-logo{
  font-family:"Nanum Myeongjo",serif;
  font-weight:900;font-size:28px;letter-spacing:-.01em;
  background:linear-gradient(135deg,var(--accent-bright) 0%,var(--accent) 50%,var(--primary) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  text-shadow:0 2px 12px rgba(79,195,247,.5);
  padding-right:8px;
  border-right:1px solid var(--border);
  margin-right:4px;
  position:relative;
}
.site-logo::before{
  content:"❄";position:absolute;left:-14px;top:50%;transform:translateY(-50%);
  color:var(--accent-bright);font-size:14px;opacity:.6;
}
.site-nav-links{
  list-style:none;display:flex;gap:4px;align-items:center;
}
.site-nav-links a{
  display:inline-block;padding:9px 15px;border-radius:8px;
  font-size:14px;font-weight:600;color:var(--text-dim);
  transition:color .15s ease, background .15s ease;
}
.site-nav-links a:hover{color:var(--accent);background:var(--card)}
.site-nav-links a.current{color:var(--accent-bright);background:var(--card-hover)}
.site-nav-cta{
  margin-left:auto;
  display:inline-flex;align-items:center;gap:7px;
  padding:10px 18px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff !important;font-weight:700;font-size:14px;
  box-shadow:0 6px 18px -6px var(--primary-glow);
  transition:transform .15s ease, box-shadow .25s ease;
  border:1px solid rgba(129,212,250,.4);
}
.site-nav-cta:hover{transform:translateY(-1px);box-shadow:0 10px 24px -8px var(--primary-glow)}

@media (max-width:720px){
  .site-nav-inner{padding:12px 14px;gap:8px;flex-wrap:wrap}
  .site-logo{font-size:22px;padding-right:6px}
  .site-nav-links{gap:1px;overflow-x:auto;flex:1 1 auto}
  .site-nav-links a{padding:7px 10px;font-size:12.5px;white-space:nowrap}
  .site-nav-cta{padding:8px 14px;font-size:13px}
}

/* ========== Hero ========== */
.hero{
  position:relative;
  padding:72px 24px 48px;
  text-align:center;
  overflow:hidden;
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 30% 40%, rgba(41,182,246,.18) 0%, transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(129,212,250,.10) 0%, transparent 50%);
  z-index:0;
}
.hero-inner{position:relative;z-index:1;max-width:900px;margin:0 auto}
.hero-eyebrow{
  display:inline-block;
  font-size:11px;font-weight:700;letter-spacing:.3em;
  color:var(--accent);
  padding:5px 16px;border:1px solid var(--border-strong);border-radius:999px;
  background:var(--card);margin-bottom:22px;text-transform:uppercase;
}
.hero-title{
  font-family:"Nanum Myeongjo",serif;
  font-size:clamp(32px,5.5vw,52px);font-weight:900;letter-spacing:-.02em;line-height:1.15;
  background:linear-gradient(135deg,var(--text) 20%,var(--accent-bright) 100%);
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  margin-bottom:16px;
  text-shadow:0 4px 20px rgba(79,195,247,.2);
}
.hero-sub{
  font-size:17px;color:var(--text-dim);max-width:640px;margin:0 auto;line-height:1.65;
}

/* ========== Container ========== */
.container{max-width:1180px;margin:0 auto;padding:40px 24px 72px;position:relative;z-index:1}

/* ========== Section Title ========== */
.section-head{
  display:flex;align-items:baseline;gap:14px;margin-bottom:28px;
  padding-bottom:16px;border-bottom:1px solid var(--border);
}
.section-head h2{
  font-family:"Nanum Myeongjo",serif;
  font-size:clamp(22px,3vw,28px);font-weight:800;letter-spacing:-.015em;color:var(--text);
}
.section-head .section-tag{
  margin-left:auto;
  font-size:12px;color:var(--muted);letter-spacing:.08em;text-transform:uppercase;
}

/* ========== Post Grid (blog list) ========== */
.post-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:22px;margin-bottom:48px;
}
.post-card{
  background:var(--card);border:1px solid var(--border);border-radius:16px;
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .2s ease, border-color .2s ease, box-shadow .25s ease;
}
.post-card:hover{
  transform:translateY(-4px);border-color:var(--border-strong);
  box-shadow:0 20px 40px -20px rgba(79,195,247,.3);
}
.post-card-media{
  position:relative;aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--primary-dark) 0%,var(--bg-2) 100%);
  display:flex;align-items:center;justify-content:center;
  overflow:hidden;
}
.post-card-media::before{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(circle at 30% 30%, rgba(129,212,250,.25) 0%, transparent 50%),
    radial-gradient(circle at 70% 70%, rgba(41,182,246,.3) 0%, transparent 50%);
}
.post-card-media .glyph{
  position:relative;z-index:1;
  font-family:"Nanum Myeongjo",serif;font-weight:900;
  font-size:56px;
  background:linear-gradient(135deg,var(--accent-bright),var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  opacity:.95;text-shadow:0 4px 16px rgba(0,0,0,.4);
  letter-spacing:.02em;
}
.post-card-body{padding:22px 22px 24px;flex:1;display:flex;flex-direction:column}
.post-card-cat{
  display:inline-block;align-self:flex-start;
  font-size:11px;font-weight:700;letter-spacing:.12em;
  color:var(--accent);background:var(--card);
  padding:3px 10px;border-radius:4px;border:1px solid var(--border);
  margin-bottom:12px;text-transform:uppercase;
}
.post-card-title{
  font-size:18px;font-weight:800;line-height:1.4;letter-spacing:-.01em;
  margin-bottom:10px;color:var(--text);
}
.post-card-excerpt{
  color:var(--muted);font-size:14px;line-height:1.65;flex:1;margin-bottom:14px;
}
.post-card-meta{
  display:flex;align-items:center;gap:10px;
  font-size:12px;color:var(--muted);
  padding-top:12px;border-top:1px dashed var(--border);
}
.post-card-meta .read-more{color:var(--accent);font-weight:600;margin-left:auto}

/* ========== Article (post detail) ========== */
.breadcrumb{
  margin-bottom:24px;font-size:13px;color:var(--muted);
}
.breadcrumb a{color:var(--accent);border-bottom:1px dashed rgba(79,195,247,.3)}
.breadcrumb a:hover{border-bottom-style:solid}
.breadcrumb span[aria-current]{color:var(--text-dim)}

.article{
  max-width:800px;margin:0 auto;
}
.article-header{text-align:center;margin-bottom:36px}
.article-cat{
  display:inline-block;
  font-size:11px;font-weight:700;letter-spacing:.15em;color:var(--accent);
  background:var(--card);padding:4px 14px;border-radius:999px;
  border:1px solid var(--border-strong);margin-bottom:16px;text-transform:uppercase;
}
.article-title{
  font-family:"Nanum Myeongjo",serif;
  font-size:clamp(26px,4.2vw,38px);font-weight:900;line-height:1.3;letter-spacing:-.015em;
  margin-bottom:14px;color:var(--text);
  text-shadow:0 2px 10px rgba(79,195,247,.15);
}
.article-meta{
  color:var(--muted);font-size:13px;
}
.article-decor{
  width:100%;max-width:700px;margin:0 auto 40px;
  height:180px;border-radius:18px;
  background:
    linear-gradient(135deg,rgba(41,182,246,.3) 0%,rgba(2,136,209,.3) 100%),
    radial-gradient(circle at 30% 50%, rgba(129,212,250,.4) 0%, transparent 50%);
  border:1px solid var(--border);
  display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.article-decor::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(45deg,transparent 0,transparent 24px,rgba(255,255,255,.04) 24px,rgba(255,255,255,.04) 25px);
}
.article-decor .decor-glyph{
  font-family:"Nanum Myeongjo",serif;font-size:72px;font-weight:900;
  background:linear-gradient(135deg,var(--accent-bright),var(--accent),var(--primary));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
  position:relative;z-index:1;text-shadow:0 4px 20px rgba(0,0,0,.4);
}

.article-body{
  font-size:16px;line-height:1.9;color:var(--text-dim);
}
.article-body h2{
  font-family:"Nanum Myeongjo",serif;
  font-size:24px;font-weight:800;margin:40px 0 16px;letter-spacing:-.01em;
  color:var(--accent-bright);padding-bottom:10px;
  border-bottom:1px solid var(--border);
}
.article-body h3{
  font-family:"Nanum Myeongjo",serif;
  font-size:19px;font-weight:700;margin:28px 0 12px;color:var(--text);
}
.article-body p{margin-bottom:18px}
.article-body strong{color:var(--accent-bright);font-weight:700}
.article-body ul,.article-body ol{padding-left:24px;margin:16px 0}
.article-body li{margin-bottom:8px}
.article-body blockquote{
  border-left:3px solid var(--accent);background:var(--card);
  padding:16px 22px;margin:22px 0;border-radius:0 10px 10px 0;
  font-style:italic;color:var(--text-dim);
}
.article-body table{
  width:100%;border-collapse:collapse;margin:22px 0;
  background:var(--card);border-radius:10px;overflow:hidden;
}
.article-body th,.article-body td{
  padding:12px 16px;border-bottom:1px solid var(--border);text-align:left;
}
.article-body th{background:rgba(79,195,247,.10);color:var(--accent);font-weight:700;font-size:13px}
.article-body td{font-size:14.5px}

.article-cta{
  margin:48px 0 32px;padding:28px 32px;
  background:linear-gradient(135deg,rgba(41,182,246,.15) 0%,rgba(79,195,247,.08) 100%);
  border:1px solid var(--border-strong);border-radius:18px;
  text-align:center;position:relative;overflow:hidden;
}
.article-cta::before{
  content:"";position:absolute;top:-50%;left:-20%;width:60%;height:200%;
  background:radial-gradient(circle,rgba(129,212,250,.15) 0%,transparent 60%);
  animation:cta-shine 10s ease-in-out infinite;
}
@keyframes cta-shine{0%,100%{transform:translate(0,0)}50%{transform:translate(180%,-10%)}}
.article-cta h3{
  font-family:"Nanum Myeongjo",serif;
  font-size:20px;font-weight:800;margin-bottom:8px;color:var(--text);position:relative;
}
.article-cta p{color:var(--muted);font-size:14px;margin-bottom:18px;position:relative}
.article-cta .btn{position:relative}

.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:12px;
  font-size:15px;font-weight:700;
  transition:transform .15s ease, box-shadow .25s ease;
}
.btn-primary{
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;box-shadow:0 8px 22px -8px var(--primary-glow);
  border:1px solid rgba(129,212,250,.4);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px -10px var(--primary-glow)}

/* ========== Related posts ========== */
.related{
  margin-top:60px;padding-top:40px;border-top:1px solid var(--border);
}
.related h3{
  font-family:"Nanum Myeongjo",serif;
  font-size:20px;font-weight:800;margin-bottom:22px;color:var(--text);
}
.related-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;
}
.related-card{
  background:var(--card);border:1px solid var(--border);border-radius:12px;
  padding:16px 18px;transition:background .15s ease, border-color .15s ease;
}
.related-card:hover{background:var(--card-hover);border-color:var(--border-strong)}
.related-card .cat{
  font-size:10px;font-weight:700;letter-spacing:.12em;color:var(--accent);
  text-transform:uppercase;margin-bottom:6px;
}
.related-card .title{font-size:14px;font-weight:700;color:var(--text);line-height:1.4}

/* ========== Footer ========== */
.site-footer{
  background:rgba(10,20,40,.6);
  border-top:1px solid var(--border);
  padding:40px 24px 32px;margin-top:40px;
}
.site-footer-inner{
  max-width:1180px;margin:0 auto;
  display:flex;flex-wrap:wrap;gap:24px;align-items:flex-start;justify-content:space-between;
}
.site-footer .brand{
  font-family:"Nanum Myeongjo",serif;font-weight:900;font-size:22px;
  background:linear-gradient(135deg,var(--accent-bright),var(--accent));
  -webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;
}
.site-footer nav{display:flex;gap:16px;flex-wrap:wrap;font-size:13px}
.site-footer nav a{color:var(--muted);transition:color .15s ease}
.site-footer nav a:hover{color:var(--accent)}
.site-footer .copy{font-size:11.5px;color:var(--muted);opacity:.7;width:100%;text-align:center;margin-top:14px}

/* ========== Responsive ========== */
@media (max-width:520px){
  .hero{padding:48px 20px 32px}
  .container{padding:32px 18px 56px}
  .article-body{font-size:15px;line-height:1.85}
  .article-body h2{font-size:21px}
  .article-cta{padding:22px 20px}
  .post-grid{gap:16px}
  .post-card-media{aspect-ratio:16/10}
  .post-card-media .glyph{font-size:44px}
  .post-card-body{padding:18px 18px 20px}
}

/* ========== 이미지 지원 ========== */
.post-card-media img{
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
  position:relative;z-index:1;
}
.post-card:hover .post-card-media img{transform:scale(1.05)}
.post-card-media::after{
  content:"";position:absolute;inset:0;z-index:2;pointer-events:none;
  background:linear-gradient(180deg,transparent 55%,rgba(10,20,40,.55) 100%);
}
.post-card-media{position:relative;overflow:hidden}

.article-hero{
  width:100%;max-width:800px;margin:0 auto 40px;
  border-radius:18px;overflow:hidden;
  border:1px solid var(--border);
  position:relative;
  box-shadow:0 20px 50px -20px rgba(0,0,0,.5);
}
.article-hero img{
  width:100%;height:auto;max-height:420px;object-fit:cover;display:block;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 60px rgba(0,0,0,.3);
}