/* 똑계 공통 스타일 — 네이비 상단 밴드, 흰 카드, 넉넉한 입력창 */
:root{
  --bg:#f3f5f9; --surface:#ffffff; --sunk:#eef2f8; --ink:#101c33; --muted:#566279; --line:#d9e0eb;
  --navy:#13294b; --navy-ink:#eaf0fb; --accent:#1f5fd6; --accent-ink:#ffffff; --accent-soft:#e3ecfc;
  --good:#17744d; --good-soft:#e2f3ea; --warn:#a9500f; --warn-soft:#fbeee2;
  --f-display:"Gowun Batang","Noto Serif KR",serif;
  --f-body:"IBM Plex Sans KR","Apple SD Gothic Neo","Malgun Gothic",system-ui,sans-serif;
  --r:12px;
}
@media (prefers-color-scheme: dark){:root{
  --bg:#0b1322; --surface:#121c30; --sunk:#0e1728; --ink:#e6ecf6; --muted:#97a3ba; --line:#25324b;
  --navy:#08101e; --navy-ink:#e6ecf6; --accent:#78a6ff; --accent-ink:#081022; --accent-soft:#1a2a4a;
  --good:#5cc995; --good-soft:#12301f; --warn:#f2a466; --warn-soft:#38230f; color-scheme:dark}}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--f-body);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%}
a{color:var(--accent)}
h1,h2,h3{text-wrap:balance;line-height:1.3;margin:0}
.num{font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.wrap{max-width:1080px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.narrow{max-width:760px}

/* header */
.site-header{background:var(--navy);color:var(--navy-ink)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;padding-block:14px}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--navy-ink);text-decoration:none}
.logo svg{width:32px;height:32px;flex-shrink:0}
.logo b{font-family:var(--f-display);font-size:24px;letter-spacing:.02em}
.logo span{font-size:12.5px;opacity:.7}
.nav{display:flex;gap:4px;flex-wrap:wrap}
.nav a{color:var(--navy-ink);text-decoration:none;font-size:15px;padding:8px 12px;border-radius:8px;opacity:.85}
.nav a:hover,.nav a[aria-current=page]{opacity:1;background:rgba(255,255,255,.1)}

/* page hero */
.hero{background:var(--navy);color:var(--navy-ink);border-top:1px solid rgba(255,255,255,.08)}
.hero .wrap{padding-block:26px 40px;display:grid;gap:8px}
.crumb{font-size:13px;opacity:.75}
.crumb a{color:inherit}
.hero h1{font-family:var(--f-display);font-size:clamp(26px,5vw,38px);font-weight:700}
.hero p{margin:0;opacity:.88;max-width:62ch}

main{display:block}
.pull{margin-top:-22px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:22px}
.stack{display:grid;gap:16px}

/* long-form pages */
.prose h2{font-family:var(--f-display);font-size:22px;margin:28px 0 10px}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:17px;margin:20px 0 6px}
.prose p,.prose li{max-width:68ch}
.prose ul,.prose ol{padding-left:22px}
.prose table{border-collapse:collapse;width:100%;font-size:15px;margin:10px 0}
.prose th,.prose td{border:1px solid var(--line);padding:8px 10px;text-align:left;vertical-align:top}
.prose th{background:var(--sunk);font-weight:600}
.tbl{overflow-x:auto}
.meta{font-size:14px;color:var(--muted)}

.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-size:15px;border-radius:10px;padding:12px 18px;cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--ink);min-height:46px;text-decoration:none}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);font-weight:600}
.btn.ghost{background:transparent}
.btn.sm{font-size:13px;padding:6px 10px;min-height:32px}

/* footer */
.site-footer{margin-top:48px;border-top:1px solid var(--line);background:var(--surface)}
.site-footer .wrap{padding-block:26px 40px;display:grid;gap:10px;font-size:14px;color:var(--muted)}
.site-footer nav{display:flex;flex-wrap:wrap;gap:6px 16px}
.site-footer nav a{color:var(--ink);text-decoration:none;font-weight:500}
.site-footer nav a:hover{text-decoration:underline}
.site-footer b{color:var(--ink)}

@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}