:root{
  --bg:#f7f9fc;--card:#ffffff;--text:#172033;--muted:#687386;
  --line:#e5e9f0;--brand:#1565c0;--brand2:#0d47a1;--soft:#eaf3ff;
  --accent:#ffb300;--shadow:0 10px 28px rgba(18,44,78,.08);
  --radius:18px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Noto Sans KR","Malgun Gothic","Segoe UI",sans-serif;line-height:1.75}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.wrap{width:min(1080px,92%);margin:0 auto}
header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:68px}
.logo{font-size:1.15rem;font-weight:800;color:#172033}
.logo span{color:var(--brand)}
nav{display:flex;flex-wrap:wrap;gap:16px;font-size:.94rem}
nav a{color:#344054;font-weight:650}
.hero{padding:72px 0 42px;background:linear-gradient(180deg,#eef6ff 0%,#f7f9fc 100%)}
.hero h1{font-size:clamp(2rem,5vw,3.5rem);line-height:1.18;letter-spacing:-.04em;margin:.3em 0}
.hero p{font-size:1.08rem;color:var(--muted);max-width:760px}
.badge,.eyebrow{display:inline-block;color:var(--brand2);font-weight:800;font-size:.82rem;letter-spacing:.04em;background:var(--soft);padding:7px 11px;border-radius:999px}
.section{padding:54px 0}
.section h2{font-size:1.8rem;letter-spacing:-.025em;margin:0 0 22px}
.section h3{line-height:1.35}
.lead{font-size:1.08rem;color:#475467}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card,.cards article,.hero-card,.list>div,.tips>div,.article-box{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow)
}
.card,.cards article{padding:24px}
.card h3,.cards article h3{margin:7px 0 8px}
.hero-card{padding:26px 28px;margin:26px 0;background:#fff}
.hero-card strong{color:var(--brand2)}
.list{display:grid;gap:14px}
.list>div{padding:20px 22px}
.list p{margin:.35em 0 0;color:#556070}
.tips{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.tips>div{padding:18px 20px}
.btn{display:inline-block;background:var(--brand);color:#fff!important;padding:12px 18px;border-radius:12px;font-weight:800;text-decoration:none!important}
.btn.secondary{background:#fff;color:var(--brand)!important;border:1px solid #a9c8ed}
.actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.grid2{display:grid;grid-template-columns:1.25fr .75fr;gap:24px}
.sidebar{align-self:start}
.article-box{padding:26px}
.article-box h2{margin-top:36px}
.article-box h2:first-child{margin-top:0}
.callout{border-left:5px solid var(--brand);background:var(--soft);padding:18px 20px;border-radius:0 14px 14px 0;margin:22px 0}
.tistory-box{background:#fff8e7;border:1px solid #f3d58a;border-radius:16px;padding:20px;margin:24px 0}
.tistory-box a{font-weight:800}
.meta{color:#7a8495;font-size:.9rem}
.breadcrumb{font-size:.9rem;color:#7a8495;margin-bottom:18px}
.related{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;font-weight:700}
table{width:100%;border-collapse:collapse;background:#fff;border-radius:14px;overflow:hidden}
th,td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{background:#f2f6fb}
footer{margin-top:40px;border-top:1px solid var(--line);background:#fff;padding:38px 0;color:#667085}
.small{font-size:.9rem;color:#7a8495}
@media(max-width:820px){
  .nav{align-items:flex-start;padding:12px 0;flex-direction:column}
  nav{gap:10px}
  .cards,.tips,.grid2,.related{grid-template-columns:1fr}
  .hero{padding-top:44px}
  .section{padding:38px 0}
}