/* 참고 구조: 섹션 교차 배경, 각진 모서리(2px), 다열 그리드. 컬러는 자체 선정 */
:root{--ink:#16202b;--mut:#5b6672;--acc:#c8501a;--accd:#a13f12;--accl:#fbeee7;--alt:#f3f4f6;--line:#d9dde2;--w:1120px}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;font-family:Pretendard,"Apple SD Gothic Neo","Noto Sans KR","Malgun Gothic",system-ui,sans-serif;color:var(--ink);line-height:1.75;font-size:16px;word-break:keep-all;padding-bottom:60px}
img{max-width:100%;height:auto;display:block}
a{color:inherit}
.wrap{max-width:var(--w);margin:0 auto;padding:0 20px}
/* 헤더 */
.site-header{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line)}
.bar{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{font-weight:800;font-size:20px;text-decoration:none;color:var(--acc)}
.nav{display:flex;gap:22px;align-items:center;font-size:15px}
.nav a{text-decoration:none}
.nav a:not(.btn):hover{color:var(--acc)}
/* 버튼 */
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;background:var(--acc);color:#fff;padding:0 26px;border-radius:2px;text-decoration:none;font-weight:700;border:2px solid var(--acc);cursor:pointer;font-size:16px;font-family:inherit;line-height:1.2;text-align:center}
.btn:hover{background:var(--accd);border-color:var(--accd)}
.btn.sm{min-height:38px;padding:0 16px;font-size:14px}
.btn.line{background:#fff;color:var(--ink);border-color:var(--ink)}
.btn.line:hover{background:var(--ink);color:#fff;border-color:var(--ink)}
.btns{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0}
.btns.c{justify-content:center}
/* 섹션·제목 위계 */
.sec{padding:64px 0;border-top:1px solid var(--line)}
.sec.alt{background:var(--alt)}
h1{font-size:36px;line-height:1.3;margin:0 0 16px;letter-spacing:-.02em}
h2{font-size:26px;line-height:1.35;margin:0 0 18px;padding-left:14px;border-left:5px solid var(--acc);letter-spacing:-.01em}
h3{font-size:18px;line-height:1.45;margin:0 0 8px}
.lead{font-size:18px;color:#26323f;max-width:820px;margin:0 0 20px}
.top{padding:40px 0 56px;border-top:0}
.top h2{margin-top:36px}
.crumb{font-size:14px;color:var(--mut);margin:0 0 14px}
.crumb a{text-decoration:none}
.note{margin:22px 0;padding:14px 16px;background:var(--accl);border-left:4px solid var(--acc);font-size:15px}
.def{margin:26px 0 8px;padding:20px 22px;background:#fff;border:1px solid var(--line);border-top:3px solid var(--ink)}
.def p{margin:0}
/* 본문(상세 페이지) 구분 */
.story{max-width:780px}
.story h2{margin-top:48px;padding-top:0}
.story h1+.lead+.tbl+h2,.story h1+.lead+h2{margin-top:36px}
.story>h2{position:relative}
.story>h2::before{content:"";position:absolute;left:-14px;top:-26px;width:calc(100% + 14px);height:1px;background:var(--line)}
.story figure{margin:22px 0}
.story figure img{max-width:340px;border-radius:2px;border:1px solid var(--line)}
.story figcaption{font-size:14px;color:var(--mut);margin-top:8px}
.quote{border-left:4px solid var(--acc);padding:10px 18px;background:var(--alt);margin:28px 0}
.quote p{margin:0 0 4px}.quote footer{font-size:14px;color:var(--mut)}
/* 사례 카드 */
.cases{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:22px}
.case{border:1px solid var(--line);border-radius:2px;background:#fff;text-decoration:none;display:block;transition:box-shadow .15s,border-color .15s}
.case:hover{border-color:var(--acc);box-shadow:0 6px 18px rgba(22,32,43,.12)}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:2px;background:var(--line)}
.cmp figure{margin:0;position:relative}
.cmp figcaption{position:absolute;left:0;top:0;background:var(--ink);color:#fff;font-size:12px;padding:3px 10px}
.cmp figure+figure figcaption{background:var(--acc)}
.cmp img{width:100%;aspect-ratio:3/4;object-fit:cover}
.case .cb{padding:14px 16px;border-top:1px solid var(--line)}
.case .cb b{display:block;font-size:16px;margin-bottom:2px}
.case .cb span{font-size:14px;color:var(--mut)}
.js .case.hid{display:none}
.more{text-align:center;margin-top:28px}
.more .btn{min-width:200px}
/* 카드·그리드 */
.grid{display:grid;gap:16px;margin-top:22px}
.g3{grid-template-columns:repeat(3,1fr)}.g5{grid-template-columns:repeat(5,1fr)}.g4{grid-template-columns:repeat(4,1fr)}
.box{border:1px solid var(--line);border-top:3px solid var(--line);background:#fff;padding:20px;border-radius:2px}
.box h3{font-size:17px}
.box p{margin:0;font-size:15px;color:var(--mut)}
.worry .box{border-top-color:var(--acc)}
a.box{text-decoration:none;display:block;transition:border-color .15s}
a.box:hover{border-color:var(--acc)}
a.box h3{color:var(--acc)}
/* 흐름 */
.flow{display:grid;grid-template-columns:repeat(4,1fr);margin-top:30px;border:1px solid var(--ink);background:#fff}
.flow div{position:relative;padding:16px 20px;border-right:1px solid var(--ink);font-weight:700}
.flow div:not(:last-child)::after{content:"\203A";position:absolute;right:10px;top:50%;transform:translateY(-50%);color:var(--acc);font-size:22px}
.flow div:last-child{border-right:0}
.flow small{display:block;font-weight:400;color:var(--mut);font-size:13px;line-height:1.5;margin-top:2px}
/* 표 */
.tbl{overflow-x:auto;margin:18px 0;border:1px solid var(--line);background:#fff;-webkit-overflow-scrolling:touch}
table{border-collapse:collapse;width:100%;min-width:520px}
th,td{border-bottom:1px solid var(--line);padding:12px 14px;text-align:left;font-size:15px;vertical-align:top;line-height:1.6}
th{background:var(--ink);color:#fff;font-weight:600;white-space:nowrap}
tbody tr:nth-child(even) td{background:#fafbfc}
td:first-child{font-weight:600;white-space:nowrap}
/* 목록: 숫자 없는 사각 마커 */
ul.chk{list-style:none;padding:0;margin:14px 0}
ul.chk li{position:relative;padding:3px 0 3px 20px;margin:2px 0}
ul.chk li::before{content:"";position:absolute;left:2px;top:.85em;width:7px;height:7px;background:var(--acc)}
/* FAQ */
.faq{border-top:2px solid var(--ink);margin-top:14px}
.faq details{border-bottom:1px solid var(--line);background:#fff}
.faq summary{cursor:pointer;padding:16px 18px;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px;min-height:56px}
.faq summary::-webkit-details-marker{display:none}
.faq summary h3,.faq summary h2{margin:0;font-size:17px;padding:0;border:0}
.faq summary::after{content:"+";font-size:26px;line-height:1;color:var(--acc);flex:none}
.faq details[open] summary{background:var(--alt)}
.faq details[open] summary::after{content:"\2212"}
.faq p{margin:0;padding:16px 18px 20px;color:#26323f}
/* CTA */
.cta{background:var(--ink);color:#fff;padding:56px 0;text-align:center}
.cta h2{color:#fff;border:0;padding:0}
.cta p{margin:0 0 6px;color:#cfd6dd}
/* 관련 카드 */
.rel-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:18px}
.rel-card{display:block;text-decoration:none;background:#fff;border:1px solid var(--line);border-radius:2px;transition:border-color .15s,box-shadow .15s}
.rel-card:hover{border-color:var(--acc);box-shadow:0 6px 18px rgba(22,32,43,.12)}
.rel-card img{width:100%;aspect-ratio:4/3;object-fit:cover}
.rel-t{display:block;font-weight:700;padding:12px 16px 2px}.rel-s{display:block;padding:0 16px 14px;color:var(--mut);font-size:14px}
/* 푸터 */
.site-footer{background:#10171f;color:#c5ccd3;padding:38px 0;font-size:14px}
.flinks{display:flex;flex-wrap:wrap;gap:8px 18px;margin-bottom:14px;padding-bottom:14px;border-bottom:1px solid #26313d}.flinks a{text-decoration:none;color:#fff}
.biz,.copy{margin:6px 0;line-height:1.8}
.floating{position:fixed;left:0;right:0;bottom:0;z-index:30;background:var(--acc);color:#fff;text-align:center;padding:15px 14px calc(15px + env(safe-area-inset-bottom));font-weight:700;text-decoration:none}
/* 모바일 */
@media(max-width:860px){
 body{font-size:16px}
 h1{font-size:28px}h2{font-size:22px;padding-left:12px;border-left-width:4px}h3{font-size:17px}
 .lead{font-size:17px}
 .sec{padding:44px 0}.top{padding:28px 0 40px}
 .cases,.g3,.g4,.rel-grid{grid-template-columns:1fr}.g5{grid-template-columns:1fr}
 .cases{gap:18px}
 .flow{grid-template-columns:1fr 1fr}
 .flow div{padding:14px}
 .flow div:nth-child(2){border-right:0}.flow div:nth-child(-n+2){border-bottom:1px solid var(--ink)}
 .flow div:nth-child(2)::after{display:none}
 .nav a:not(.btn){display:none}
 .btns{flex-direction:column}
 .btns .btn,.more .btn{width:100%}
 .story>h2::before{left:-12px;width:calc(100% + 12px)}
 .story figure img{max-width:100%}
 .faq summary{padding:14px}
 .tbl{margin:16px -20px;border-left:0;border-right:0}
 th,td{padding:10px 12px;font-size:14px}
 td:first-child{white-space:normal}
 .cta{padding:44px 0}
}