:root{
  --navy:#1d3f6e; --navy2:#13294a; --red:#d6312b; --steel:#9fb3c8; --bg:#f5f7fa;
  --card:#fff; --ink:#1f2933; --muted:#5b6876; --line:#dde3ea;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.7 "Noto Sans KR",system-ui,-apple-system,"Segoe UI",sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:var(--navy)}
.wrap{max-width:1200px;margin:0 auto;padding:0 16px}

/* language: only the active one is shown */
html[lang="ko"] .l-en, html:not([lang="ko"]) .l-ko{display:none !important}
.muted{color:var(--muted)}

/* header */
.top{position:sticky;top:0;z-index:20;background:#fff;border-bottom:3px solid var(--navy);box-shadow:0 2px 8px rgba(0,0,0,.06)}
.bar{display:flex;align-items:center;gap:16px;min-height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--navy2);font-weight:700;line-height:1.15}
.brand img{height:34px;width:auto}
.brand small{font-weight:400;color:var(--muted);font-size:12px}
.top nav{margin-left:auto;display:flex;flex-wrap:wrap}
.top nav a{padding:8px 10px;text-decoration:none;color:var(--ink);border-radius:6px;font-weight:500;font-size:15px;white-space:nowrap}
.top nav a:hover,.top nav a.on{background:var(--navy);color:#fff}
.lang{border:1px solid var(--navy);background:#fff;color:var(--navy);border-radius:16px;padding:4px 12px;font:inherit;font-size:13px;cursor:pointer;white-space:nowrap}
.lang:hover{background:var(--navy);color:#fff}
.menu{display:none;font-size:26px;background:none;border:0;color:var(--navy);cursor:pointer}
@media (max-width:1050px){
  .menu{display:block}
  .lang{margin-left:auto}
  .top nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;flex-direction:column;border-bottom:3px solid var(--navy);padding:6px 16px}
  .nav-open .top nav{display:flex}
}

/* hero */
.hero{position:relative;aspect-ratio:1920/767;background:#000;overflow:hidden}
.hero .slide{position:absolute;inset:0;opacity:0;transition:opacity 1s}
.hero .slide.on{opacity:1}
.hero .slide img{width:100%;height:100%;object-fit:cover}
.dots{position:absolute;bottom:12px;left:0;right:0;display:flex;justify-content:center;gap:8px}
.dots button{width:11px;height:11px;border-radius:50%;border:2px solid #fff;background:transparent;padding:0;cursor:pointer}
.dots button.on{background:#fff}
@media (max-width:700px){.hero{aspect-ratio:3/4}}

/* titles & sections */
.intro{text-align:center;padding:40px 16px 8px}
.intro h1,.title h1{color:var(--navy2);font-size:clamp(28px,4vw,40px);margin:0 0 12px;line-height:1.25}
.intro h1 small{display:block;font-size:16px;color:var(--muted);font-weight:500}
.intro p{max-width:860px;margin:8px auto}
.title{padding:28px 16px 4px}
.pagebanner{background:#fff}
.pagebanner .banner{width:100%;max-width:1200px;margin:0 auto}
.block{padding:28px 16px}
.block h2{font-size:24px;color:var(--navy2);border-left:6px solid var(--red);padding-left:12px;margin:0 0 18px}
.block h3{color:var(--navy);margin:22px 0 8px}
p.l-en,p.l-ko,.md p{margin-top:6px;margin-bottom:10px}
.md img{border-radius:8px;margin:8px 0}
.block.cont{padding-top:0}
.idea li .md p,.hx td .md p,.clinic .md p{margin:4px 0}
.intro .md{max-width:860px;margin:8px auto}
.intro .cta{margin-top:14px}
.post-body .zoom img{max-height:520px;width:auto}
.foot .md p{margin:6px 0}
.foot .fine p{margin:6px 0}
.note{color:var(--muted);font-size:14px;background:#eef2f6;padding:8px 12px;border-radius:6px}
.sub{display:flex;flex-wrap:wrap;gap:8px;padding-top:12px}
.sub a{background:#fff;border:1px solid var(--line);padding:4px 14px;border-radius:20px;text-decoration:none;font-size:14px}
.btn{display:inline-block;background:var(--navy);color:#fff;text-decoration:none;padding:10px 22px;border-radius:24px;font-weight:700;margin:6px}
.btn.alt{background:var(--red)}
.center{display:block;margin:12px auto}
img.mid{max-width:860px;width:100%;margin:0 auto;border-radius:8px}

/* cards */
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding-top:20px;padding-bottom:10px}
.card{background:var(--card);border-radius:10px;overflow:hidden;text-decoration:none;color:var(--ink);box-shadow:0 2px 10px rgba(0,0,0,.07);display:flex;flex-direction:column}
.card img{aspect-ratio:16/9;object-fit:cover;width:100%}
.card b{padding:12px 14px;color:var(--navy2)}
.card:hover{transform:translateY(-2px);box-shadow:0 6px 16px rgba(0,0,0,.12)}
@media (max-width:900px){.cards{grid-template-columns:repeat(2,1fr)}}
@media (max-width:480px){.cards{grid-template-columns:1fr}}

/* galleries */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:10px;margin:12px 0}
.grid.small{grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}
.grid.two{grid-template-columns:repeat(auto-fill,minmax(320px,1fr))}
.grid a{display:block;background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 4px rgba(0,0,0,.08)}
.grid img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .3s}
.grid.small img,.grid.two img{aspect-ratio:auto;object-fit:contain}
.grid a:hover img{transform:scale(1.04)}
.stack{display:flex;flex-direction:column;gap:12px;margin:12px 0}
.stack img,.banner{width:100%;border-radius:6px}
.project .banner{margin:8px 0}

/* about / clinic */
.idea{padding-left:22px}
.idea li{margin-bottom:12px}
.idea li::marker{color:var(--red);font-weight:700}
.hx{width:100%;border-collapse:collapse;background:#fff;border-radius:8px;overflow:hidden;margin-top:16px}
.hx th{width:120px;text-align:left;vertical-align:top;color:var(--red);padding:12px;border-bottom:1px solid var(--line);white-space:nowrap}
.hx td{padding:8px 12px;border-bottom:1px solid var(--line)}
@media (max-width:600px){.hx th{width:auto;display:block;border:0;padding-bottom:0}.hx td{display:block}}
.clinics{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.clinic{background:#fff;border-radius:10px;padding:14px 18px;border-top:4px solid var(--navy)}
.clinic h3{margin:0 0 6px}
.clinic em{float:right;font-style:normal;font-size:13px;color:#fff;background:var(--red);border-radius:12px;padding:0 10px}
@media (max-width:760px){.clinics{grid-template-columns:1fr}}
.tags span{display:inline-block;background:var(--navy);color:#fff;border-radius:16px;padding:2px 14px;margin:4px 6px 4px 0}
.project{background:#fff;border-radius:10px;padding:12px 18px;margin-bottom:18px}
.project h3{margin:6px 0}
.project h3 em{font-style:normal;background:var(--red);color:#fff;border-radius:12px;padding:0 10px;font-size:14px;margin-right:6px}
.codes code{background:#e8eef5;padding:1px 8px;border-radius:4px;margin-left:6px}
.accounts{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.accounts .acct{background:#fff;border-radius:10px;padding:16px 20px;border-left:6px solid var(--red)}
.accounts h3{margin:0 0 6px;font-size:17px}
.accounts strong{font-size:22px;color:var(--navy2)}
.accounts .md p{margin:4px 0}
@media (max-width:700px){.accounts{grid-template-columns:1fr}}

/* board */
.posts{list-style:none;padding:0;margin:0 0 10px;background:#fff;border-radius:10px;overflow:hidden}
.posts li{display:flex;gap:12px;align-items:center;padding:12px 16px;border-bottom:1px solid var(--line)}
.posts li a{flex:1;text-decoration:none;color:var(--ink)}
.posts time,.post time{color:var(--muted);font-size:13px;margin-left:auto;white-space:nowrap}
.cat{font-style:normal;font-size:12px;background:#e8eef5;color:var(--navy);border-radius:10px;padding:1px 9px;margin-right:4px}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.filters button{border:1px solid var(--line);background:#fff;border-radius:18px;padding:4px 16px;font:inherit;cursor:pointer}
.filters button.on{background:var(--navy);color:#fff;border-color:var(--navy)}
.post{background:#fff;border-radius:10px;margin-bottom:10px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.post summary{display:flex;gap:8px;align-items:center;padding:14px 18px;cursor:pointer;list-style:none}
.post summary::-webkit-details-marker{display:none}
.post[open] summary{border-bottom:1px solid var(--line)}
.post-body{padding:14px 18px}
.post-body img{max-height:520px;width:auto;border-radius:8px;margin-bottom:12px}

/* admin */
.panel{background:#fff;border-radius:10px;padding:18px 20px;margin-bottom:22px;box-shadow:0 1px 4px rgba(0,0,0,.06)}
.panel label{display:block;margin:8px 0;font-weight:500}
.panel input:not([type=checkbox]),.panel select,.panel textarea{display:block;width:100%;margin-top:4px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;font:inherit;font-weight:400}
.panel .row{display:flex;gap:20px;align-items:flex-end;flex-wrap:wrap}
.panel .row label{min-width:200px}
.panel .chk{display:flex;gap:6px;align-items:center}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.cols fieldset{border:1px solid var(--line);border-radius:8px;padding:6px 14px 10px}
.cols legend{font-weight:700;color:var(--navy);padding:0 6px}
@media (max-width:760px){.cols{grid-template-columns:1fr}}
.hint{font-size:13px;color:var(--muted)}
.err{color:var(--red)}
.btn.small{padding:4px 12px;font-size:13px;margin:2px}
.admin-list{width:100%;background:#fff;border-collapse:collapse;border-radius:10px;overflow:hidden}
.admin-list th,.admin-list td{padding:8px 10px;border-bottom:1px solid var(--line);text-align:left}
.admin-list .act{white-space:nowrap;text-align:right}

/* footer */
.foot{background:var(--navy2);color:#d5dfeb;margin-top:40px;padding:26px 0;font-size:14px}
.foot a{color:#fff}
.foot .fine{font-size:12px;color:#9fb0c4}

/* lightbox */
#lb{position:fixed;inset:0;background:rgba(0,0,0,.88);display:none;align-items:center;justify-content:center;z-index:50;cursor:zoom-out;padding:16px}
#lb.show{display:flex}
#lb img{max-width:100%;max-height:100%;object-fit:contain}