:root{
  --blue:#1a6ee0;--blue-dark:#124e9e;--ink:#1c2430;--sub:#5b6675;
  --bg:#f6f8fb;--card:#ffffff;--line:#e3e8ef;
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Apple SD Gothic Neo','Malgun Gothic','Noto Sans KR',sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px 70px;}
a{color:var(--blue);text-decoration:none}
a:hover{text-decoration:underline}

/* header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}
.logo{font-size:22px;font-weight:800;color:var(--ink);letter-spacing:-.5px}
.logo span{color:var(--blue)}
.logo:hover{text-decoration:none}
.site-header nav{display:flex;gap:4px;flex-wrap:wrap}
.site-header nav a{color:var(--sub);font-weight:600;padding:6px 12px;border-radius:8px;font-size:15px}
.site-header nav a:hover{background:var(--bg);text-decoration:none;color:var(--blue)}
.site-header nav a.on{color:var(--blue);background:#e8f1fd}

/* hero */
.hero{background:linear-gradient(135deg,var(--blue) 0%,var(--blue-dark) 100%);
  color:#fff;border-radius:16px;padding:48px 36px;margin:28px 0 40px}
.hero h1{font-size:30px;line-height:1.35;margin-bottom:12px;letter-spacing:-.5px}
.hero p{font-size:17px;opacity:.92;max-width:640px}

/* sections & cards */
main{min-height:60vh;padding-bottom:56px}
.sec-title{font-size:22px;margin:36px 0 16px;display:flex;align-items:baseline;justify-content:space-between}
.sec-title .more{font-size:14px;font-weight:600}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;
  color:var(--ink);transition:box-shadow .15s,transform .15s;display:block}
.card:hover{text-decoration:none;box-shadow:0 6px 18px rgba(18,78,158,.10);transform:translateY(-2px)}
.card h3{font-size:16.5px;margin-bottom:8px;color:var(--ink);letter-spacing:-.3px}
.card p{font-size:14px;color:var(--sub);line-height:1.6}

/* category head */
.cat-head{margin:36px 0 24px}
.cat-head h1{font-size:28px;letter-spacing:-.5px;margin-bottom:8px}
.cat-head p{color:var(--sub);max-width:680px}

/* article */
.post{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:40px 44px;margin:28px 0;max-width:820px}
.post .crumb{font-size:13px;color:var(--sub);margin-bottom:14px}
.post h1{font-size:27px;line-height:1.4;letter-spacing:-.5px;margin-bottom:6px}
.post .meta{color:var(--blue);font-size:13.5px;font-weight:700;margin-bottom:22px}
.post h2{font-size:20px;margin:30px 0 12px;padding-top:8px;letter-spacing:-.3px;
  border-top:1px solid var(--line);padding-top:22px}
.post p{margin-bottom:14px;color:#2a3340}
.post ul,.post ol{margin:0 0 14px 22px;color:#2a3340}
.post li{margin-bottom:6px}
.post table{border-collapse:collapse;width:100%;margin:8px 0 18px;font-size:14.5px}
.post th,.post td{border:1px solid var(--line);padding:8px 12px;text-align:left}
.post th{background:var(--bg)}
.post .tip{background:#e8f1fd;border-left:4px solid var(--blue);border-radius:0 8px 8px 0;
  padding:14px 18px;margin:18px 0;font-size:15px}
.related{max-width:820px;margin-bottom:20px}
.related h2{font-size:19px;margin:8px 0 14px}

/* static pages */
.page{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:40px 44px;margin:28px 0;max-width:820px}
.page h1{font-size:26px;margin-bottom:20px;letter-spacing:-.5px}
.page h2{font-size:19px;margin:26px 0 10px}
.page p{margin-bottom:13px;color:#2a3340}
.page ul,.page ol{margin:0 0 13px 22px;color:#2a3340}
.page li{margin-bottom:5px}

/* footer */
.site-footer{background:#fff;border-top:1px solid var(--line);padding:26px 0;color:var(--sub);font-size:14px}
.site-footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}
.site-footer a{color:var(--sub)}
.site-footer a:hover{color:var(--blue)}

@media(max-width:640px){
  .hero{padding:34px 24px}
  .hero h1{font-size:24px}
  .post,.page{padding:28px 22px}
  .site-header .wrap{flex-direction:column;align-items:flex-start;gap:8px}
}

/* summary box */
.post .summary{background:#eef5ff;border:1px solid #cfe0f7;border-radius:12px;
  padding:18px 22px;margin:0 0 24px;font-size:15px}
.post .summary strong{display:block;color:var(--blue-dark);margin-bottom:8px;font-size:15.5px}
.post .summary ul{margin:0 0 0 20px}
.post .summary li{margin-bottom:6px;color:#2a3340}

/* === AdSense 개선: 디자인 v2 === */
.skip{position:absolute;left:-9999px;top:0;background:var(--blue);color:#fff;padding:8px 16px;border-radius:0 0 8px 0;z-index:100}
.skip:focus{left:0}
.hero-stats{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.hero-stats span{background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.28);
  padding:6px 14px;border-radius:999px;font-size:13.5px;font-weight:600}
.home-about{background:var(--card);border:1px solid var(--line);border-radius:16px;
  padding:32px 36px;margin:44px 0 10px}
.home-about h2{font-size:20px;margin-bottom:12px;letter-spacing:-.3px}
.home-about p{color:#2a3340;margin-bottom:12px}

/* article meta & badge */
.post .meta{display:flex;align-items:center;gap:6px;flex-wrap:wrap;color:var(--sub);font-weight:500}
.badge{background:#e8f1fd;color:var(--blue-dark);font-weight:700;font-size:12.5px;
  padding:3px 10px;border-radius:999px;margin-right:4px}

/* toc */
.toc{background:#fafbfd;border:1px solid var(--line);border-radius:12px;
  padding:16px 22px;margin:0 0 26px;font-size:14.5px}
.toc strong{display:block;margin-bottom:8px;color:var(--ink);font-size:15px}
.toc ol{margin:0 0 0 20px;columns:2;column-gap:28px}
.toc li{margin-bottom:5px;break-inside:avoid}
.toc a{color:var(--sub)}
.toc a:hover{color:var(--blue)}
@media(max-width:640px){.toc ol{columns:1}}

/* footer v2 */
.foot-grid{display:grid;grid-template-columns:2fr 1fr 1.4fr;gap:28px;padding-top:8px;padding-bottom:18px}
.foot-logo{font-weight:800;font-size:18px;color:var(--ink);letter-spacing:-.4px;margin-bottom:8px}
.foot-logo span{color:var(--blue)}
.foot-desc{font-size:13.5px;line-height:1.7;max-width:340px}
.foot-title{font-weight:700;color:var(--ink);margin-bottom:8px;font-size:14px}
.site-footer .foot-grid p{margin-bottom:6px}
.foot-copy{border-top:1px solid var(--line);padding-top:14px;font-size:13px}
@media(max-width:640px){.foot-grid{grid-template-columns:1fr;gap:18px}}

/* 404 */
.nf{text-align:center;padding:70px 40px}
.nf h1{margin-bottom:14px}

/* polish */
.post h1{margin-bottom:12px}
.post h2{scroll-margin-top:80px}
.card h3{line-height:1.5}

/* === v3: 일러스트 + 검색 === */
.hero-img{width:100%;height:auto;display:block;margin:4px 0 24px;border-radius:14px}
.search-form input{border:1px solid var(--line);border-radius:999px;padding:7px 16px;
  font-size:14px;background:var(--bg);width:120px;transition:width .2s,border-color .2s;font-family:inherit}
.search-form input:focus{width:180px;outline:none;border-color:var(--blue);background:#fff}
.search-page-form{display:flex;gap:10px;max-width:560px;margin-bottom:10px}
.search-page-form input{flex:1;border:1px solid var(--line);border-radius:10px;padding:12px 16px;font-size:16px;font-family:inherit}
.search-page-form input:focus{outline:none;border-color:var(--blue)}
.search-page-form button{background:var(--blue);color:#fff;border:none;border-radius:10px;
  padding:12px 24px;font-size:15px;font-weight:700;cursor:pointer;font-family:inherit}
.search-page-form button:hover{background:var(--blue-dark)}
.scount{color:var(--sub);font-size:14px;margin-bottom:14px}
#sresults .badge{margin-right:6px}
@media(max-width:640px){.search-form{width:100%}.search-form input{width:100%}.search-form input:focus{width:100%}}