:root{--ink:#172033;--muted:#697386;--line:#e5e9f0;--soft:#f6f8fb;--brand:#2457d6;--accent:#0f9f78}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Noto Sans KR",sans-serif;color:var(--ink);background:#fff;line-height:1.72}a{color:inherit;text-decoration:none}.wrap{width:min(1120px,92%);margin:auto}
header{position:sticky;top:0;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);z-index:10}.nav{height:68px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:baseline;gap:10px}.brand strong{font-size:22px}.brand span{font-size:13px;color:var(--muted)}nav{display:flex;gap:20px;font-size:14px}
.hero{padding:76px 0 56px;background:linear-gradient(180deg,#f7faff,#fff)}.eyebrow{font-size:12px;letter-spacing:.12em;color:var(--brand);font-weight:700}.hero h1{font-size:clamp(34px,5vw,64px);line-height:1.1;margin:12px 0 18px;letter-spacing:-.04em}.lead{font-size:18px;color:var(--muted);max-width:760px}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:28px}.stat{border:1px solid var(--line);padding:20px;border-radius:16px;background:#fff}.stat strong{display:block;font-size:28px}.stat span{color:var(--muted);font-size:13px}
section{padding:42px 0}.section-head{display:flex;justify-content:space-between;align-items:end;margin-bottom:20px}.section-head h2{font-size:28px;margin:0}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff}.card:hover{border-color:#bac7ea;box-shadow:0 8px 28px rgba(36,87,214,.08)}.meta{font-size:12px;color:var(--muted)}.card h3{margin:8px 0;font-size:20px;line-height:1.35}.card p{margin:0;color:var(--muted)}
.pagehead{padding:52px 0 32px;background:var(--soft);border-bottom:1px solid var(--line)}.crumbs{font-size:13px;color:var(--muted);margin-bottom:14px}.pagehead h1{font-size:clamp(30px,4vw,48px);line-height:1.2;margin:0 0 12px;letter-spacing:-.035em}.pagehead p{font-size:17px;color:var(--muted);max-width:820px}
.article{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:34px}.content{min-width:0}.content h2{font-size:27px;margin:38px 0 14px}.content h3{font-size:20px;margin:26px 0 10px}.content p{font-size:16px}.summary{background:#f5f8ff;border:1px solid #dfe7fb;padding:22px;border-radius:16px}.summary strong{display:block;margin-bottom:8px}
.compare{width:100%;border-collapse:collapse;margin:18px 0 28px;font-size:15px}.compare th,.compare td{border:1px solid var(--line);padding:14px;vertical-align:top}.compare th{background:#f8fafc;text-align:left}.compare th:first-child{width:18%}.compare td:nth-child(2),.compare td:nth-child(3){width:41%}
.tip{border-left:4px solid var(--accent);background:#f1fbf7;padding:16px 18px;margin:18px 0}.warning{border-left:4px solid #e2a100;background:#fff9e8;padding:16px 18px;margin:18px 0}
.sidebar{position:sticky;top:94px;align-self:start}.sidebox{border:1px solid var(--line);border-radius:16px;padding:18px;margin-bottom:14px}.sidebox h3{font-size:15px;margin:0 0 10px}.sidebox a{display:block;font-size:14px;padding:6px 0;color:#445}
.related{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.related a{border:1px solid var(--line);padding:16px;border-radius:14px}.adbox{margin:28px 0;min-height:80px}.notice{font-size:13px;color:var(--muted);border-top:1px solid var(--line);padding-top:16px}
footer{margin-top:52px;border-top:1px solid var(--line);background:#fafbfc;padding:36px 0}.footer-grid{display:grid;grid-template-columns:2fr 1fr;gap:30px}.footer-grid p{color:var(--muted);max-width:650px}
@media(max-width:820px){nav{gap:12px}.grid{grid-template-columns:1fr}.stats{grid-template-columns:1fr}.article{grid-template-columns:1fr}.sidebar{position:static}.compare{font-size:13px}.compare th,.compare td{padding:10px}.related{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}


/* v2.2 grouped comparison cards */
.topic-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.topic-card{border:1px solid var(--line);border-radius:18px;padding:22px;background:#fff}
.topic-card:hover{border-color:#bac7ea;box-shadow:0 8px 28px rgba(36,87,214,.08)}
.topic-card h3{font-size:20px;line-height:1.35;margin:8px 0}
.topic-card p{margin:0 0 16px;color:var(--muted);font-size:14px}
.topic-links{display:flex;flex-wrap:wrap;gap:8px}
.topic-chip{display:inline-flex;align-items:center;min-height:34px;padding:7px 11px;border:1px solid #d9e1f2;border-radius:999px;background:#f7f9ff;font-size:13px;color:#27447d}
.topic-chip:hover{background:#eef3ff;border-color:#b9c8ea}
@media(max-width:820px){.topic-grid{grid-template-columns:1fr}.topic-card{padding:18px}}