@font-face { font-family: 'Pretendard Variable'; font-weight: 45 920; font-style: normal; font-display: swap; src: url('../assets/fonts/PretendardVariable.woff2') format('woff2-variations'); }
:root { --accent:#E8232A; --accent-dark:#C0141B; --ink:#0A0A0C; --black:#0B0B0E; --soft:#f4f5f7; --line:#e7e8ec; --gray:#5c616b; --muted:#8b909a; --green:#1bb673; }
* { box-sizing:border-box; margin:0; padding:0; }
html { scroll-behavior:smooth; }
body { font-family:"Pretendard Variable",Pretendard,-apple-system,system-ui,sans-serif; color:var(--ink); background:#fff; line-height:1.78; -webkit-font-smoothing:antialiased; letter-spacing:-0.02em; }
a { color:inherit; text-decoration:none; }
img { display:block; max-width:100%; }
ul,ol { list-style:none; }
.wrap { width:100%; max-width:1140px; margin:0 auto; padding:0 28px; }
.btn { display:inline-flex; align-items:center; justify-content:center; gap:8px; font-weight:700; font-size:15px; border-radius:999px; cursor:pointer; padding:12px 22px; border:1.5px solid transparent; transition:transform .15s, background .18s, color .18s, border-color .18s; }
.btn-dark { background:var(--ink); color:#fff; } .btn-dark:hover { background:#000; transform:translateY(-2px); }
.btn-line { background:transparent; color:var(--ink); border-color:#cfd2d8; } .btn-line:hover { border-color:var(--ink); transform:translateY(-2px); }
.btn-white { background:#fff; color:var(--accent); } .btn-white:hover { transform:translateY(-2px); }

header.site { position:sticky; top:0; z-index:60; background:rgba(255,255,255,.92); backdrop-filter:saturate(180%) blur(12px); border-bottom:1px solid var(--line); }
.nav { display:flex; align-items:center; justify-content:space-between; height:68px; }
.brand { display:flex; align-items:center; gap:10px; }
.brand .logo-img { height:28px; width:auto; }
.brand .sub { font-size:17px; font-weight:800; color:var(--gray); border-left:1px solid var(--line); padding-left:10px; }
.menu { display:flex; gap:28px; }
.menu a { font-size:14.5px; font-weight:600; color:#3a3f49; } .menu a:hover, .menu a.on { color:var(--accent); }
.nav-cta { display:flex; align-items:center; gap:12px; }
.menu-toggle { display:none; background:transparent; border:none; cursor:pointer; padding:6px 4px; color:var(--ink); font-size:26px; line-height:1; }

.crumb { font-size:13px; color:var(--muted); font-weight:600; padding:26px 0 0; }
.crumb a:hover { color:var(--accent); }
.post-head { padding:18px 0 28px; border-bottom:1px solid var(--line); }
.cat { color:var(--accent); font-weight:800; font-size:13px; letter-spacing:.04em; }
h1.title { font-size:clamp(28px,4.2vw,46px); font-weight:800; letter-spacing:-0.04em; line-height:1.2; margin-top:14px; }
.byline { display:flex; align-items:center; gap:14px; margin-top:24px; flex-wrap:wrap; color:var(--gray); font-size:14px; font-weight:600; }
.byline .av { width:42px; height:42px; border-radius:50%; background:var(--accent); color:#fff; display:grid; place-items:center; font-weight:800; }
.byline b { color:var(--ink); }
.byline .dot { color:var(--line); }
.byline a.author { color:var(--ink); border-bottom:1px solid var(--line); }
.byline a.author:hover { color:var(--accent); border-color:var(--accent); }

article { min-width:0; max-width:800px; margin:0 auto; padding:40px 0 70px; }
.lead { font-size:19px; color:#23272f; font-weight:500; }
.lead b { font-weight:800; }
.snippet { background:var(--soft); border-left:4px solid var(--accent); border-radius:0 12px 12px 0; padding:20px 24px; margin:26px 0; font-size:16px; }
.snippet b { font-weight:800; }
article h2 { font-size:25px; font-weight:800; letter-spacing:-0.03em; margin:44px 0 14px; line-height:1.3; scroll-margin-top:90px; }
article h3 { font-size:18px; font-weight:800; margin:26px 0 10px; }
article p { margin:14px 0; color:#23272f; }
article p.t { color:var(--gray); font-size:15px; }
article figure { margin:0 0 24px; }
article figure img { display:block; width:100%; max-height:400px; object-fit:cover; object-position:center; border-radius:12px; background:var(--soft); }
article figcaption { font-size:13px; color:var(--muted); margin-top:9px; font-weight:600; }
article ul.bul { margin:14px 0; display:grid; gap:10px; }
article ul.bul li { padding-left:26px; position:relative; color:#23272f; }
article ul.bul li::before { content:""; position:absolute; left:4px; top:11px; width:8px; height:8px; border-radius:50%; background:var(--accent); }
article a.ln { color:var(--accent); font-weight:700; border-bottom:1px solid rgba(232,35,42,.3); }
.callout { background:#eef0ff; border-radius:14px; padding:22px 24px; margin:24px 0; }
.callout b { font-weight:800; }
.nothire { border:1.5px solid var(--line); border-left:4px solid var(--ink); border-radius:12px; padding:22px 24px; margin:24px 0; }

table.spec { width:100%; border-collapse:collapse; margin:18px 0; font-size:14.5px; }
table.spec th, table.spec td { text-align:left; padding:13px 12px; border-bottom:1px solid var(--line); }
table.spec th { background:var(--ink); color:#fff; font-weight:700; }
table.spec td b { color:var(--accent); font-weight:800; }
table.spec tr:hover td { background:#fafbfc; }

.faq details { border-bottom:1px solid var(--line); padding:6px 0; }
.faq summary { cursor:pointer; list-style:none; padding:16px 0; font-weight:800; font-size:16.5px; display:flex; justify-content:space-between; gap:14px; }
.faq summary::-webkit-details-marker { display:none; }
.faq summary::after { content:"+"; color:var(--accent); font-weight:800; }
.faq details[open] summary::after { content:"\2212"; }
.faq details p { margin:0 0 16px; color:var(--gray); }

.related { border-top:1px solid var(--line); margin-top:44px; padding-top:24px; }
.related h4 { font-size:14px; font-weight:800; color:var(--muted); letter-spacing:.04em; }
.related ul { margin-top:12px; display:grid; gap:8px; }
.related a { color:var(--accent); font-weight:700; font-size:15px; }

.author-card { display:flex; gap:16px; align-items:flex-start; border:1px solid var(--line); border-radius:16px; padding:24px; margin:40px 0 0; }
.author-card .av { width:54px; height:54px; border-radius:50%; background:var(--accent); color:#fff; display:grid; place-items:center; font-weight:800; font-size:20px; flex:none; }
.author-card h4 { font-size:16px; font-weight:800; } .author-card p { font-size:14px; color:var(--gray); margin-top:6px; }

.cta-band { background:var(--accent); color:#fff; border-radius:18px; padding:34px 32px; margin:36px 0 0; display:flex; align-items:center; justify-content:space-between; gap:20px; flex-wrap:wrap; }
.cta-band h3 { color:#fff; font-size:21px; font-weight:800; margin:0; } .cta-band p { color:#dcdcff; margin:6px 0 0; font-size:14.5px; }

footer.site { background:var(--black); color:#8b909a; padding:48px 0 34px; font-size:13.5px; margin-top:70px; }
.foot-row { display:flex; justify-content:space-between; gap:20px; flex-wrap:wrap; align-items:center; }
.foot-brand { display:inline-flex; align-items:center; gap:10px; background:#fff; border-radius:10px; padding:9px 13px; }
.foot-brand img { height:24px; } .foot-brand .sub { font-size:12px; font-weight:800; color:var(--ink); border-left:1px solid var(--line); padding-left:9px; }
.foot-legal { max-width:640px; line-height:1.7; color:#6b7280; font-size:12.5px; margin-top:18px; }

.skip { position:absolute; left:-999px; top:0; background:var(--ink); color:#fff; padding:10px 16px; border-radius:0 0 8px 0; z-index:100; font-weight:700; font-size:14px; }
.skip:focus { left:0; }
.totop { position:fixed; right:22px; bottom:22px; width:46px; height:46px; border-radius:50%; background:var(--ink); color:#fff; border:none; cursor:pointer; display:none; place-items:center; box-shadow:0 8px 20px rgba(10,10,12,.25); z-index:70; }
.totop.show { display:grid; }
a:focus-visible, button:focus-visible, summary:focus-visible { outline:2px solid var(--accent); outline-offset:2px; border-radius:4px; }

/* blog index grid */
.bloghero { padding:64px 0 36px; border-bottom:1px solid var(--line); }
.bloghero .lbl { color:var(--accent); font-weight:800; font-size:14px; letter-spacing:.04em; }
.bloghero h1 { font-size:clamp(32px,5vw,52px); font-weight:800; letter-spacing:-0.04em; margin-top:12px; }
.bloghero p { color:var(--gray); font-size:17px; margin-top:14px; max-width:560px; }
.posts { padding:44px 0 80px; display:grid; grid-template-columns:repeat(3,1fr); gap:26px; }
.pcard { border:1px solid var(--line); border-radius:16px; overflow:hidden; display:block; transition:transform .2s,box-shadow .2s; }
.pcard:hover { transform:translateY(-5px); box-shadow:0 18px 40px rgba(10,10,12,.1); }
.pcard .thumb { aspect-ratio:16/10; background:var(--soft); } .pcard .thumb img { width:100%; height:100%; object-fit:cover; }
.pcard .body { padding:20px; }
.pcard .cat { color:var(--accent); font-weight:800; font-size:12px; letter-spacing:.04em; }
.pcard h2 { font-size:18px; font-weight:800; letter-spacing:-0.02em; margin-top:9px; line-height:1.35; }
.pcard p { color:var(--gray); font-size:14px; margin-top:9px; }
.pcard .meta { margin-top:14px; font-size:12.5px; color:var(--muted); font-weight:600; }

@media (max-width:900px) {
  .menu { display:none; position:absolute; top:100%; left:0; right:0; flex-direction:column; gap:0; background:#fff; border-bottom:1px solid var(--line); padding:6px 0; box-shadow:0 14px 26px rgba(10,10,12,.1); } .site.open .menu { display:flex; } .menu a { padding:14px 24px; font-size:16px; } .menu-toggle { display:inline-flex; align-items:center; } .nav-cta .btn { display:none; }
  .posts { grid-template-columns:repeat(2,1fr); }
}
@media (max-width:620px) { .posts { grid-template-columns:1fr; } }