:root{--ink:#d6d3cc;--muted:#a49d8f;--line:#302d27;--brand:#d0b880;--brand-ink:#0d0c0a;--bg:#161512;--card:#0d0c0a;--soft:#22201c}

*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR",sans-serif;word-break:keep-all;overflow-wrap:anywhere}
a{color:var(--brand)}
.ins-top{position:sticky;top:0;z-index:2;background:var(--card);border-bottom:1px solid var(--line)}
.ins-top-inner{max-width:880px;margin:0 auto;padding:12px 16px;display:flex;justify-content:space-between;align-items:center}
.ins-top .logo{font-weight:800;color:var(--brand);text-decoration:none;letter-spacing:.02em}
.ins-top .back{color:var(--muted);text-decoration:none;font-size:14px}
main{max-width:880px;margin:0 auto;padding:28px 16px 64px}
.ins-hero{display:flex;gap:18px;align-items:center}
.ins-hero img{border-radius:18px;flex:none}
.eyebrow{margin:0;color:var(--brand);font-weight:700;font-size:13px;letter-spacing:.08em}
h1{font-size:28px;margin:2px 0 6px;line-height:1.3}
.lead{margin:0;color:var(--muted)}
.ins-actions{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0 8px}
.btn{display:inline-flex;flex-direction:column;justify-content:center;min-height:48px;padding:10px 18px;border:1px solid var(--line);border-radius:12px;background:var(--card);color:var(--ink);font:inherit;font-weight:700;text-decoration:none;cursor:pointer;line-height:1.35}
.btn small{font-weight:400;font-size:12px;opacity:.85}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink)}
.ins-detect{background:var(--soft);border-radius:10px;padding:10px 14px;margin:8px 0 0}
.toc{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 18px;margin:20px 0}
.toc ol{margin:6px 0 0}
h2{display:flex;align-items:center;gap:10px;font-size:21px;margin:44px 0 10px;padding-top:14px;border-top:2px solid var(--brand);scroll-margin-top:70px}
h2 span{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:50%;background:var(--brand);color:var(--brand-ink);font-size:15px;flex:none}
.steps{padding-left:0;list-style:none;counter-reset:s}
.steps li{position:relative;counter-increment:s;padding:12px 14px 12px 52px;margin:8px 0;background:var(--card);border:1px solid var(--line);border-radius:12px}
.steps li::before{content:counter(s);position:absolute;left:14px;top:12px;width:26px;height:26px;border-radius:50%;background:var(--soft);color:var(--brand);font-weight:800;display:grid;place-items:center;font-size:14px}
code{background:var(--soft);padding:1px 6px;border-radius:6px;font-size:.92em}
.ico{display:inline-block;min-width:1.4em;text-align:center;border:1px solid var(--line);border-radius:6px;padding:0 4px}
.tip{background:var(--soft);border-left:4px solid var(--brand);border-radius:8px;padding:10px 14px}
.qr-row{display:flex;gap:18px;align-items:center;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px}
.qr-row img{flex:none;background:#0d0c0a;border-radius:8px}
.qr-row p{margin:0}
.faq dt{font-weight:700;margin-top:14px}
.faq dd{margin:4px 0 0;color:var(--ink)}
.ins-foot{margin-top:48px;color:var(--muted);font-size:14px;text-align:center}
@media (max-width:560px){.ins-hero{align-items:flex-start}.ins-hero img{width:56px;height:56px}h1{font-size:24px}.btn{flex:1 1 100%}.qr-row{flex-direction:column;text-align:center}}
@media print{
 :root{--ink:#efeeeb;--muted:#c0bbb2;--line:#4c473e;--brand:#d0b880;--brand-ink:#0d0c0a;--bg:#0d0c0a;--card:#0d0c0a;--soft:#201e1b}
 body{font-size:12.5px;line-height:1.6}
 .no-print,.ins-top .back{display:none!important}
 .ins-top{position:static}
 main{padding-top:10px}
 h2{break-after:avoid;margin-top:26px}
 .steps li,.qr-row,.faq dt,.faq dd{break-inside:avoid}
 section{break-inside:auto}
 *{-webkit-print-color-adjust:exact;print-color-adjust:exact}
}

.logo-img{display:block;height:40px;width:auto}