/* aimbst.com 공용 스타일 (콘텐츠 페이지) */
:root{
    --bg-main:#0B0F19;
    --bg-panel:#151A23;
    --bg-card:#1E2532;
    --brand-blue:#3B82F6;
    --accent-red:#EF4444;
    --accent-green:#10B981;
    --text-primary:#F8FAFC;
    --text-secondary:#94A3B8;
    --border-color:rgba(255,255,255,0.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    background:radial-gradient(circle at top right,#151A23,#0B0F19);
    color:var(--text-primary);
    font-family:'Pretendard','Nunito','Segoe UI','Malgun Gothic',sans-serif;
    min-height:100vh;
    -webkit-font-smoothing:antialiased;
    word-break:keep-all;
}

/* 상단 내비게이션 */
.topbar{
    position:sticky;top:0;z-index:100;
    display:flex;justify-content:space-between;align-items:center;
    height:52px;padding:0 24px;
    background:rgba(11,15,25,0.85);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border-color);
}
.topbar .brand{
    font-weight:900;font-size:17px;letter-spacing:1px;
    color:var(--text-primary);text-decoration:none;
}
.topbar .brand span{color:var(--brand-blue)}
.topbar nav{display:flex;gap:22px;align-items:center}
.topbar nav a{
    color:var(--text-secondary);text-decoration:none;
    font-size:14px;font-weight:700;transition:color .15s;
}
.topbar nav a:hover,.topbar nav a.on{color:var(--text-primary)}

/* 본문 공통 */
.wrap{max-width:820px;margin:0 auto;padding:48px 24px 72px}
.crumb{font-size:13px;font-weight:700;color:var(--text-secondary);margin-bottom:18px}
.crumb a{color:var(--text-secondary);text-decoration:none}
.crumb a:hover{color:var(--text-primary);text-decoration:underline}
h1{font-size:30px;font-weight:900;letter-spacing:-0.5px;line-height:1.3;margin-bottom:10px}
.byline{font-size:13.5px;color:var(--text-secondary);font-weight:600;margin-bottom:36px;padding-bottom:20px;border-bottom:1px solid var(--border-color)}
.byline strong{color:var(--text-primary)}
h2{font-size:22px;font-weight:800;margin:44px 0 14px;letter-spacing:-0.3px}
h3{font-size:17.5px;font-weight:800;margin:28px 0 10px}
p{font-size:15.5px;line-height:1.85;color:var(--text-secondary);margin-bottom:15px;font-weight:500}
strong{color:var(--text-primary)}
a{color:var(--brand-blue)}
ul,ol{margin:0 0 15px 22px;color:var(--text-secondary);line-height:1.85;font-size:15.5px;font-weight:500}
li{margin-bottom:7px}
blockquote{
    margin:20px 0;padding:14px 18px;
    border-left:3px solid var(--brand-blue);
    background:rgba(59,130,246,0.07);border-radius:0 10px 10px 0;
    font-size:14.5px;line-height:1.75;color:var(--text-secondary);
}

/* 표 */
.rt-table{width:100%;border-collapse:collapse;margin:18px 0 26px;font-size:14.5px}
.rt-table th,.rt-table td{border:1px solid var(--border-color);padding:11px 13px;text-align:left;vertical-align:top}
.rt-table th{background:rgba(59,130,246,0.12);color:var(--text-primary);font-weight:800;white-space:nowrap}
.rt-table td{color:var(--text-secondary);font-weight:600;line-height:1.6}
.rt-table td:first-child{color:var(--text-primary);font-weight:800}
.rt-table .sub{display:block;font-weight:600;color:var(--text-secondary);font-size:12.5px;margin-top:2px}

/* 체크리스트 */
.check-list{list-style:none;margin:14px 0 24px;padding:0}
.check-list li{position:relative;padding:2px 0 2px 30px;margin-bottom:9px;line-height:1.75}
.check-list li::before{content:"✓";position:absolute;left:2px;top:0;color:var(--accent-green);font-weight:900;font-size:17px}

/* FAQ */
.faq-item{background:linear-gradient(145deg,rgba(30,37,50,.6),rgba(15,20,28,.6));border:1px solid var(--border-color);border-radius:14px;padding:18px 22px;margin-bottom:12px}
.faq-item h3{margin:0 0 8px;font-size:16px;color:var(--brand-blue)}
.faq-item p{margin:0;font-size:14.5px}

/* 용어사전 */
.glossary dt{font-weight:800;color:var(--text-primary);font-size:16px;margin-top:18px}
.glossary dd{margin:5px 0 0;color:var(--text-secondary);line-height:1.75;font-size:14.5px;font-weight:500}

/* 참고문헌 */
.ref-list{margin:12px 0 8px;padding-left:22px;font-size:13.5px;line-height:1.7}
.ref-list li{margin-bottom:9px}
.ref-note{font-size:12.5px;opacity:.85;margin-top:6px}

/* 관련 글 / 가이드 카드 */
.guide-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:14px;margin:20px 0 8px}
.guide-card{
    display:block;background:linear-gradient(145deg,rgba(30,37,50,.7),rgba(15,20,28,.7));
    border:1px solid var(--border-color);border-radius:14px;padding:18px 20px;
    text-decoration:none;transition:transform .15s,border-color .15s;
}
.guide-card:hover{transform:translateY(-2px);border-color:rgba(59,130,246,.5)}
.guide-card b{display:block;color:var(--text-primary);font-size:15px;font-weight:800;margin-bottom:6px;line-height:1.45}
.guide-card span{display:block;color:var(--text-secondary);font-size:13px;line-height:1.6;font-weight:500}

/* 하단 CTA */
.test-cta{
    display:block;text-align:center;margin:44px 0 8px;padding:20px;
    background:linear-gradient(145deg,#3B82F6,#2563EB);border-radius:16px;
    color:#fff;font-size:17px;font-weight:900;text-decoration:none;letter-spacing:.3px;
    box-shadow:0 8px 24px rgba(59,130,246,.3);transition:transform .15s;
}
.test-cta:hover{transform:translateY(-2px)}
.test-cta small{display:block;font-size:12.5px;font-weight:600;opacity:.8;margin-top:4px}

/* 푸터 */
.site-footer{
    max-width:820px;margin:0 auto;padding:26px 24px 44px;
    border-top:1px solid var(--border-color);
    display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;justify-content:space-between;
    color:var(--text-secondary);font-size:13px;font-weight:700;
}
.site-footer nav{display:flex;gap:18px;flex-wrap:wrap}
.site-footer a{color:var(--text-secondary);text-decoration:none}
.site-footer a:hover{color:var(--text-primary);text-decoration:underline}

@media (max-width:640px){
    .topbar{padding:0 16px}
    .topbar nav{gap:14px}
    .topbar nav a{font-size:13px}
    .wrap{padding:36px 18px 56px}
    h1{font-size:24px}
    h2{font-size:19px}
    p,ul,ol{font-size:14.5px}
    .rt-table{font-size:13px}
    .rt-table th,.rt-table td{padding:8px 9px}
}