:root{--bg:#ffffff;--fg:#0f172a;--muted:#556079;--line:#e5e7eb;--card:#f8fafc;--brand:#2563eb;--accent:#16a34a}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Pretendard,Noto Sans KR,sans-serif;line-height:1.7}
a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}
.container{max-width:1200px;margin:0 auto;padding:20px}
.header{position:sticky;top:0;background:rgba(255,255,255,.96);backdrop-filter:blur(5px);border-bottom:1px solid var(--line);z-index:50}
.nav{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.brand{font-weight:800;color:#111}
.nav a{padding:8px 12px;border-radius:12px}.nav a.current,.nav a:hover{background:var(--card)}
.top-visual{border-bottom:1px solid var(--line)}.top-visual img{width:100%;height:auto;border-radius:14px;border:1px solid var(--line)}
.hero{padding:24px 0 8px}.hero h1{margin:0 0 6px}.lead{color:var(--muted)}
.grid{display:grid;gap:16px;grid-template-columns:repeat(12,1fr)}
.card{grid-column:span 12;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:18px}
@media(min-width:980px){.card.half{grid-column:span 6}.card.third{grid-column:span 4}}
.table{width:100%;border-collapse:collapse}.table th,.table td{border:1px solid var(--line);padding:10px;text-align:left;vertical-align:top}.table thead th{background:#eef2ff}
ul.check{list-style:none;padding:0;margin:0}ul.check li{position:relative;padding-left:26px;margin:8px 0}ul.check li:before{content:"✔";position:absolute;left:0;color:var(--accent);font-weight:800}
.btn{display:inline-flex;gap:8px;align-items:center;border:0;border-radius:12px;padding:12px 16px;background:var(--brand);color:#fff;font-weight:700;cursor:pointer}
.btn.alt{background:#10b981}.btn.ghost{background:#eef2ff;color:#0f172a}
.h2{margin:8px 0 6px;font-size:22px}.small{color:var(--muted);font-size:14px}
.footer{border-top:1px solid var(--line);margin-top:26px;padding:20px;color:var(--muted);font-size:14px}
.modal-backdrop{position:fixed;inset:0;background:rgba(0,0,0,.45);display:none;align-items:center;justify-content:center;z-index:60}
.modal{background:#fff;border:1px solid var(--line);padding:20px;border-radius:16px;max-width:520px;width:92%}.show{display:flex}
.badge{display:inline-block;background:#0f172a;color:#fff;border-radius:999px;padding:4px 10px;font-size:12px}