:root{--night:#071724;--night2:#0b2233;--paper:#faf8f3;--ivory:#f2ede4;--bronze:#ad8d60;--bronze2:#d6bd91;--ink:#11232e;--muted:#69737a;--line:rgba(17,35,46,.15);--max:1120px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Pretendard","Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",sans-serif;line-height:1.78;word-break:keep-all}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}.shell{width:min(calc(100% - 48px),var(--max));margin:auto}
.study-header{position:sticky;top:0;z-index:50;background:rgba(7,23,36,.96);color:#fff;border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(14px)}.study-nav{height:74px;display:flex;align-items:center;justify-content:space-between;gap:22px}.study-brand{font-weight:900;font-size:19px;letter-spacing:-.04em}.study-brand small{display:block;font:8px Georgia,serif;letter-spacing:.24em;opacity:.65;margin-top:3px}.study-links{display:flex;gap:20px;align-items:center;font-size:12px;font-weight:800}.study-links a:last-child{border:1px solid rgba(255,255,255,.4);padding:9px 13px}
.study-hero{background:linear-gradient(135deg,var(--night),#12364d);color:#fff;padding:86px 0 74px}.study-kicker{font:700 11px Georgia,serif;letter-spacing:.18em;color:var(--bronze2);margin-bottom:18px}.study-hero h1{font-size:clamp(34px,5vw,62px);line-height:1.14;letter-spacing:-.055em;margin:0;max-width:900px}.study-hero p{margin:22px 0 0;max-width:760px;color:rgba(255,255,255,.72);font-size:16px}.crumb{display:flex;gap:9px;align-items:center;font-size:11px;color:rgba(255,255,255,.55);margin-bottom:24px}.crumb a{color:rgba(255,255,255,.8)}
.article{padding:70px 0 90px}.article-inner{max-width:860px;margin:auto}.article h2{font-size:30px;line-height:1.35;letter-spacing:-.045em;margin:0 0 16px}.article h3{font-size:22px;line-height:1.4;letter-spacing:-.035em;margin:46px 0 12px}.article p{margin:0;color:#33454f;font-size:16px}.lead-box{padding:30px;border:1px solid var(--line);background:#fff;margin-bottom:38px}.lead-box p{font-size:17px}.article-photo{margin:42px 0 10px;border-radius:4px;overflow:hidden;background:#eee}.article-photo img{width:100%;max-height:760px;object-fit:cover}.article-photo figcaption{font-size:11px;color:#7b858b;padding:10px 3px 0}.section-no{font:700 10px Georgia,serif;letter-spacing:.16em;color:var(--bronze);display:block;margin-bottom:7px}.faq,.summary{margin-top:52px;padding:28px 30px;background:var(--ivory);border-left:3px solid var(--bronze)}.summary{background:var(--night);color:#fff;border-left-color:var(--bronze2)}.summary p{color:rgba(255,255,255,.78)}.faq h3,.summary h3{margin:0 0 12px;font-size:21px}.article-back{margin-top:55px;display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 17px;border:1px solid var(--ink);font-size:12px;font-weight:900}.btn.primary{background:var(--night);color:#fff;border-color:var(--night)}
.info-strip{background:#ede8de;border-top:1px solid var(--line);padding:34px 0}.info-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.info-grid small{display:block;font:700 9px Georgia,serif;letter-spacing:.14em;color:#7e6b4f}.info-grid b{display:block;margin-top:6px;font-size:14px}.info-grid p{margin:4px 0 0;color:#6f767b;font-size:12px}.study-footer{background:#04111a;color:rgba(255,255,255,.62);padding:26px 0;font-size:11px}.study-footer .shell{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}
.list-hero{padding:92px 0 70px;background:var(--night);color:#fff}.list-hero h1{font-size:clamp(38px,6vw,68px);margin:0;letter-spacing:-.055em}.list-hero p{max-width:720px;color:rgba(255,255,255,.68);margin:18px 0 0}.notes{padding:70px 0 90px}.note-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px}.note-card{background:#fff;border:1px solid var(--line);transition:.25s}.note-card:hover{transform:translateY(-4px);box-shadow:0 18px 45px rgba(4,17,26,.08)}.note-thumb{aspect-ratio:1/1;overflow:hidden;background:#eee}.note-thumb img{width:100%;height:100%;object-fit:cover}.note-copy{padding:25px}.note-copy small{font:700 9px Georgia,serif;letter-spacing:.13em;color:var(--bronze)}.note-copy h2{font-size:22px;line-height:1.42;letter-spacing:-.04em;margin:10px 0 10px}.note-copy p{font-size:13px;color:#6f767b;margin:0}.note-arrow{display:inline-block;margin-top:18px;font-size:12px;font-weight:900}.list-intro{margin-bottom:35px}.list-intro h2{font-size:29px;letter-spacing:-.045em;margin:0 0 8px}.list-intro p{margin:0;color:#69737a}
@media(max-width:760px){.shell{width:min(calc(100% - 30px),var(--max))}.study-links a:not(:last-child){display:none}.study-header .study-nav{height:64px}.study-hero{padding:64px 0 55px}.study-hero h1{font-size:36px}.article{padding:48px 0 70px}.article h2{font-size:25px}.article h3{font-size:20px;margin-top:38px}.article p{font-size:15px}.lead-box{padding:22px}.note-grid{grid-template-columns:1fr;gap:20px}.info-grid{grid-template-columns:1fr 1fr}.list-hero{padding:70px 0 54px}.list-hero h1{font-size:42px}}

/* SEO internal-link topic cluster */
.related-learning{margin-top:54px;padding-top:34px;border-top:1px solid var(--line)}.related-learning h2{font-size:22px;margin:0 0 18px}.related-learning-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.related-learning a{display:block;padding:16px 17px;background:#fff;border:1px solid var(--line);font-size:13px;font-weight:800;line-height:1.5;transition:.2s}.related-learning a:hover{transform:translateY(-2px);box-shadow:0 9px 24px rgba(4,17,26,.07)}@media(max-width:760px){.related-learning-grid{grid-template-columns:1fr}}