/* ======================================================
 * GEO Universal Kit v2.1~2.3 적용 스타일
 * - 각주·참고문헌 링크·함께 읽기 (v2.2)
 * - 근거 문단·관련 논문 카드 (v2.3)
 * - 상단바 (AI 배지 컨테이너)
 * 필요 변수: --brand · --brand-light · --ink · --line (site-footer.css)
 * ==================================================== */
:root { --accent: #b8860b; --gray-light: #8a8f95; }

/* ▼ 각주·참고문헌 링크·함께 읽기 (GEO Kit v2.2) */
sup.fn{font-size:11px;font-weight:800;line-height:0;margin-left:1px}
sup.fn a{color:var(--accent);text-decoration:none;padding:0 1px;border-radius:2px}
sup.fn a:hover{background:#fbf3dc;text-decoration:underline}
sup.fn:target a{background:#fbf3dc;outline:2px solid #f0e2a8}
.ref-list li{scroll-margin-top:24px}
.ref-list li:target{background:#fffbea;outline:2px solid #f0e2a8;outline-offset:2px;border-radius:3px}
.ref-list li a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px;word-break:break-word}
.ref-list li a:hover{color:var(--brand);text-decoration-color:var(--brand)}
.ref-list li a.ref-back{text-decoration:none;color:var(--accent);font-weight:800;margin-right:2px}
.ref-list .ref-host{font-size:11.5px;color:var(--gray-light);font-family:'Menlo',monospace;margin-left:4px}
.see-also{margin:16px 0 2px;padding:11px 14px;background:var(--brand-light);border-radius:4px;font-size:14px;line-height:1.7;color:var(--ink)}
.see-also .sa-k{display:inline-block;font-size:11px;font-weight:800;color:var(--brand);background:#fff;border:1px solid var(--line);border-radius:10px;padding:0 8px;margin-right:8px;vertical-align:1px}
.see-also a.xlink{color:var(--brand);font-weight:700;text-decoration:underline;text-underline-offset:3px}

/* 참고문헌 섹션 (section.references) */
section.references h2{font-size:17px!important;border-bottom:none!important;margin:28px 0 6px!important;padding:0!important}
.references .ref-note{font-size:12.5px;color:var(--gray-light);margin:0 0 10px}
.ref-list{margin:0;padding-left:22px;font-size:13.5px;line-height:1.85;color:var(--ink)}
.ref-list li{margin-bottom:6px}
.ref-list li.paper .ref-ids{display:inline-block;margin-left:6px;font-size:11.5px;font-family:'Menlo',monospace}
.ref-list li.paper .ref-ids a{color:var(--brand)}
.ref-list li .nolink{color:var(--gray-light);font-size:12px}

/* ▼ 근거 문단 (GEO Kit v2.3) */
p.evidence{margin:16px 0 4px;padding:12px 16px 12px 40px;background:#f6f9fc;border:1px solid #dde6f0;border-radius:6px;font-size:14.5px!important;line-height:1.75!important;color:var(--ink);position:relative}
p.evidence::before{content:'🔬';position:absolute;left:13px;top:11px;font-size:15px}

/* ▼ 관련 논문 카드 (12-C) */
section.research{margin:28px 0 24px;padding:18px 20px;border:1px solid var(--line);border-radius:10px;background:#fbfcfe}
section.research h2{font-size:17px!important;border-bottom:none!important;margin:0 0 4px!important;padding:0!important}
section.research .rp-note{font-size:12.5px!important;color:var(--gray-light);margin:0 0 12px!important}
section.research ul{list-style:none;padding:0!important;margin:0}
section.research li{padding:12px 14px;background:#fff;border:1px solid var(--line);border-left:4px solid var(--brand);border-radius:6px;margin-bottom:8px}
section.research li > a{display:block;text-decoration:none;color:inherit}
section.research .rp-src{display:block;font-size:11.5px;font-weight:800;color:var(--brand);letter-spacing:.02em;margin-bottom:3px}
section.research .rp-t{display:block;font-size:14px;font-weight:700;color:var(--ink);line-height:1.45;margin-bottom:4px}
section.research li > a:hover .rp-t{text-decoration:underline}
section.research .rp-pt{display:block;font-size:13px;color:#444;line-height:1.6}
section.research .rp-ref{display:block;margin-top:6px;font-size:11.5px;color:var(--gray-light)}
section.research .rp-ref a{color:var(--accent);font-weight:700}

/* ▼ 상단바 (AI 배지가 들어가는 nav) */
.gk-topbar{background:#fff;border-bottom:1px solid var(--line);position:relative;z-index:40}
.gk-topbar .gk-inner{max-width:1180px;margin:0 auto;padding:10px 24px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.gk-topbar .gk-brand{font-size:14px;font-weight:800;color:var(--brand);text-decoration:none;white-space:nowrap}
.gk-topbar nav{display:flex;align-items:center;gap:18px;font-size:13px}
.gk-topbar nav > a{color:var(--ink);text-decoration:none;font-weight:600;white-space:nowrap}
.gk-topbar nav > a:hover{color:var(--brand)}
@media (max-width:480px){ .gk-topbar nav > a:not(:first-child){display:none} .gk-topbar .gk-brand{font-size:13px} }

/* ▼ 12-B 관련 영상 블록 (GEO Kit v2.3) */
.video-related{background:#fff;border:1px solid var(--line);border-top:3px solid var(--brand);padding:22px 28px;margin:24px 0 16px}
@media(max-width:640px){.video-related{padding:20px 20px}}
.video-related h2{font-size:17px!important;font-weight:800;color:var(--ink);margin:0 0 4px!important;padding:0!important;border:none!important;letter-spacing:-0.3px}
.video-related .vr-note{font-size:12.5px!important;color:var(--gray-light);margin:0 0 14px!important}
.video-related ul{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:0!important;padding:0!important}
@media(max-width:720px){.video-related ul{grid-template-columns:1fr}}
.video-related li{margin:0!important;padding:0!important}
.video-related li::before{display:none!important}
.video-related a{display:block;color:var(--ink);text-decoration:none}
.video-related a:hover .vr-t{color:var(--brand)}
.video-related .vr-thumb{position:relative;display:block;aspect-ratio:16/9;background:#dfe3e8;overflow:hidden;border:1px solid #e5e7eb}
.video-related .vr-thumb img{width:100%;height:100%;object-fit:cover;display:block;margin:0!important;border-radius:0!important}
.video-related .vr-dur{position:absolute;right:6px;bottom:6px;background:rgba(0,0,0,.78);color:#fff;font-size:11px;font-weight:700;padding:1px 6px;border-radius:3px}
.video-related .vr-t{display:block;font-size:13.5px;font-weight:700;line-height:1.5;margin-top:8px;letter-spacing:-0.2px}
.video-related .vr-d{display:block;font-size:11.5px;color:var(--gray-light);margin-top:2px}
.video-related .vr-more{display:inline-block;margin-top:14px;font-size:12.5px;font-weight:700;color:var(--brand)}